Protective shield for shield support and method of its manufacture

FIELD: construction.

SUBSTANCE: invention relates to the protective shield for shield support and method of its manufacture. Proposed protective shield has the cover plate 14, two connecting hinges 21 for connecting the protective shield with roof beam and pair couple 15 of side plates with two side plates (13, 16) with bayonet sockets (11, 12), respectively, for fixing levers of articulation linkage on the protective shield. In this case, each connecting hinge (21) for roof beam is the integral part of separately manufactured elongated structural assembly (20). Besides, the structural assembly at the front end has the projecting lug for the pin, and enters by the rear end into the intermediate space between the side plates (13, 16). In this case, the structural assembly (20) is rigidly welded to the side plates (13, 16) by means of welded seams at the joints between the structural assembly (20) and side plates (13, 16) and / or to the cover plate (14) by means of welded seams at the joints between structural assembly (20) and cover plate (14).

EFFECT: increase of bearing capacity of the protective shield under the influence of bending and torsion force, as well as simplification of process of its manufacture.

20 cl, 16 dwg

 

The invention relates to a protective shield for a shield roof support for underground mining, containing at least one top sheet, at least two of the connecting hinge for the roof bar, whereby the roof bar roof may be pivotally mounted on the protective shield, and side plates, arranged in pairs, with pin sockets for mounting levers articulated lever on the protective shield. The invention also relates also to a method of manufacturing a protective shield for a shield roof support for underground mining, and the protective shield has a top sheet, two connecting joint for swivel protective shield with roof bar roof and side plates, arranged in pairs, with pin sockets for connection of the protective shield with the arms of lever mechanism.

In underground mines, so that during the production of minerals to sustain open hollow space to secure the location of mining machines in the so-called excavation of roadway, used variable height panel lining panel or rack mounting, which, as a rule, have two horizontal skid, of lever mechanism, for the most part with four levers used as lemniscate mechanism, protect the nutrient shield and the roof bar roof, pivotally associated with a protective shield. Due to the raise of hydraulic cylinders that support the roof bar roof on horizontal rails, roof bar roof pressed against the so-called hanging side, while the protective shield prevents the collapse of the rocks in the back or on the side laying generate waste rock mining installation.

Numerous applications for legal protection related to creating a shield roof support, the form of horizontal runners, and construction of the roof bar roof. The protective shield while for the most part is considered only as a connecting element between the lever mechanism and the roof bar roof and have long been made without the changes.

The objective of the invention is to structurally improve the protective shield for underground shield lining, so that the protective shield could be produced using modern manufacturing techniques, where possible, cost-effective and at the same time could also withstand high effort of bending and torsion.

This task in relation to the protective shield according to the invention is solved by the fact that each of the connecting hinge for the roof bar is part of an elongated structural node to the th is manufactured separately and which on the front side has a hole for dowel pin, protruding forward, which has a flat lower face for contact with the top sheet, which rear end is included in the intermediate space between the side sheets of the pair of side sheets, and, optionally, an elongated structural node welded with welds to the joints between the structural node and side plates and rigidly welded to the side plates and/or rigidly welded to the covering sheet by means of welded seams at the joints between the structural node and a covering sheet. The task in respect of the method of manufacturing the protective shield is solved due to the fact that each of the connecting hinge for the roof bar is part of oblong construction unit, which is manufactured separately and on the front side has a protruding lug for pin, flat bottom side, and a rear end, and in the process of manufacturing the rear end of the structural node is inserted in the intermediate space between the side sheets of the pair of side sheets and using weld connects with the side sheets and/or with a covering sheet.

In a preferred embodiment, the method first elongated structural node is inserted in the intermediate space between the side sheets of the pair of side plates and through weld connects with them, prid is than constructive node and a pair of lateral plates will be welded to the covering sheet as an intermediate or main structural units. You can, however, also first be welded oblong constructive node to the covering sheet. The solution according to the invention as a significant characteristic of the solution involves the formation of elongated structural node in such a way that not only on the front side of this structural unit is designed lug for pin to attach the roof bar roof, but that it is its flat bottom side is attached to the top sheet by a relatively long section, in particular, can be welded using just the damage of welded joints. The protective shield is arranged at the same time so that elongated structural node to have its rear end can vdvinut'sâ or inserted between the side sheets and, if necessary, also there be welded.

Welding of structural node and a pair of lateral plates may be conducted first in order of the intermediate or main structural unit, which consists of an elongated construction unit with lifting eye pin and a pair of lateral plates, welded to the top sheet in the form of the lower structural unit made in advance. This design protective shield, or carrying out of the method in the manufacture of protective shield lead to a significant reduction in the number of individual parts required formanufacture of the protective shield; at the same time offers the possibility of relatively simple way to maintain the pre-set sizes between lifting eye pin for mounting the hinge to the roof bar, on the one hand, and a pin sockets for mounting the levers on the other hand, since this lower structural unit or the main structural node can gather together before will be its final fixed on the covering sheet. In addition, it is ensured that an elongated structural node, on the one hand, and a pair of lateral plates, on the other hand, can be interconnected using a sufficient number of welds, before the final stage, this intermediate or main structural site by means of welds, preferably by means of welds along the outer walls of the elongated structural node and the lateral plates of each pair of lateral plates, will be welding and attaching the intermediate structural node to the covering sheet. Alternatively, however, it is also possible to first welded to the top sheet of pre-fabricated elongated structural node and then a pair of side sheets set on the top sheet so that the rear end of the structural node is entered in the intermediate space. In this position, then a pair of Boko what's sheets welded with a covering sheet. If desired, can then be welded structural node and a pair of side sheets.

An elongated structural unit is designed preferably in the form of a welded structure, which has two external flat sheet strips which are connected via at least one transverse zone, and because of this have increased stiffness relative to each other. In a preferred embodiment, the can then between the sheet bars to warith curved protective belt, by which is achieved by the additional increase in the rigidity of the sheet strips relative to each other. In the case of a particularly preferred solution according to the invention the protective belt are located on both sides of the cross bridge and structural node, preferably by means of welds that connect the edges of the covering zones with the inner sides of the flat sheet strips, as well as with a cross bridge or each other, is formed in a partially enclosed design. The lower edge of the sheet strips are thus preferably flat and thus, the area adjoining elongated structural node to the covering sheet. In order to use structural node, if possible, a simple way to form a connection joint for roof bar, particularly preferably is, if the sheet strips each have a rounded front end, which is provided with eye round shape, so that when axial location of both eyes round form two sheet strips connected in an elongated structural node, creates a socket to swivel pin or bracket for trunnion for hinge pin for the connection of the roof bar roof with a protective shield. The entire elongated structural node may consist of several separate parts, preferably from about five to eight separate parts, depending on the number of applied protective zones, resulting in generally achieved lower production costs for manufacturing elongated structural node. Simultaneously, this same construction site can be respectively separately and then used to obtain each of the connecting hinge for the roof bar.

A particularly simple design of the protective shield is also achieved due to the fact that according to a preferred variant of execution between the side sheets, a pair of lateral plates welded only one single transverse element. The preferred way is only one transverse element is then only for that it was possible to produce a pair of lateral plates in the form of a prom which mediate product which with high precision, keeping the specified dimensions both sides of the sheet are plane-parallel relative to each other and are, in fact, at a given intermediate space relative to each other, the dimensions of which are sufficient to oblong constructive node can be inserted between the side plates. Particularly preferably, if the transverse element consists of a curved sheet element, such as, for example, from a profile element semicircular or semi-oval shape, which respectively face the ends are welded to the inner sides of the side plates. The lower edge of the curved sheet element can then simultaneously in assembled condition imposed on the covering sheet and there again welded through spot welding or preferably by means of a continuous weld. In the side plates preferably on both sides of the transverse element, respectively, cut the hole as the pin receiving socket for mounting levers are inserted into through holes of the hinge pins for the arms. Cut hole receiving a pin of the socket is preferably before welding oblong constructive UzA with a pair of lateral plates, depending on the carrying out of the way, before or PEFC is the connection of the side sheets in a pair of side sheets with an intermediate space.

After the first two major construction unit, consisting respectively of an elongated structural node and welded a pair of lateral plates, welded to the top sheet, to final installation of the protective shield respectively to face each other, the side surfaces adjacent the lateral plates of the pairs of lateral plates are preferably welded rectangular sheets of rigidity that the bottom edge adjacent to the top sheet and welded there. If at least three of the bounding edges of the sheet stiffness, located at right angles relative to each other, can I use them a simple way to increase the rigidity of the protective shield between the side sheets of the pairs of side plates, so that the structural elements are elongated structural node pairs and the side sheets at the same time form the struts, which increases the rigidity of the covering sheet in the state Assembly. To top sheet between two pairs of lateral plates may be further welded to the support console to attach corner of the cylinder between the protective shield and the roof bar roof, and supporting the console preferably consists of a casting. Hereinafter, the preferred way leaves rigidity and support console can be welded to the protective belt, which has the notches for the partial p is kodine sheets stiffness and the head part supporting the console.

In an alternative embodiment, the protective shield according to the invention the lower edge of sheet strips can at least partially provide deep chamfers for placement of welded joints between sheet strips and a covering sheet and/or lower edges of the side sheets at least partially to provide deep chamfers for placement of welds between the elongated structural node and a covering sheet. Performing a deep chamfer allows, therefore, first, to apply a relatively stronger welds, and secondly, makes it possible to closely sticking with each other elongated structural node and its overlying the lateral plates of the pair of side sheets, in fact, if the welds between the elongated structural node and a covering sheet are on the sides. Hereinafter, the preferred way of sheet strips elongated structural node, located in the assembled condition, inside, on its upper side may be provided with a recess for receiving the covering sheet, which passes from one sheet strip placed outside the second sheet strip outside, and preferably welded thereto.

Further, the rear edges of the side sheets may be provided with protrusions, and between the projections and a covering sheet RA is Medina and welded closing jumper passing through the width of the covering sheet.

Further advantages and forms of implementation of the protective shield, and method of manufacturing the protective shield derived from the following description of the preferred exemplary embodiment of the protective shield shield lining, described in the figures. In the drawings, show:

Figure 1 consisting of a control room lining for underground excavation with protective shield according to the invention, side view;

2 is a perspective view of the protective shield according to the first variant of execution in the form of a bottom end of method of production;

Figa, 3B, 3C main stages of the method of manufacturing the protective shield of figure 2;

Figure 4 pre-made main structural node, used in the manufacture of the protective shield of figure 2;

Figure 5 a perspective view of an oblong construction unit with the connecting hinge for the roof bar;

6 is a structural node of figure 5 in a detailed image;

Fig.7 bottom constructive site for the manufacture of the main construction unit of figure 4;

Fig the main structural elements of the lower node according to Fig.7, the zoomed-in image;

Fig.9 perspective view of the protective shield according to the second variant of execution in the form of a bottom end of method of production;

Figa, 10B, 10C basic e the APA method according to the second variant of carrying out the method in accordance with the invention in the manufacture of the protective shield of Fig.9;

11 a perspective view of an oblong construction unit with the connecting hinge for the roof bar when the protective shield according to the second variant of implementation; and

Fig perspective view of the pair of side sheets as the lower structural node when the protective shield according to the second variant of execution.

Figure 1 shows the panel lining for underground mining, indicated generally by the number 1, which, in particular, drift mining, where mining machine, like a chain scraper conveyor with attached guide for the machine, can be kept open simultaneously mining unit can move. Shield shield 1 is known in itself by the way has two runner 2, located next to each other, which in the underground mine workings are indicated as horizontal runners, as they are superimposed on the base rock, which forms the soil of the stope. On each horizontal runner 2 is based, respectively, powerful hydraulic cylinder 3 mounted with the ability to re-nominated, which in underground mining operations is denoted as hydraulic hour, and the cylinder head which presses from below onto the roof bar 4 shield, which subsequently, as it is usual in mining, referred to as ver the UC roof, as he pressed against the rock, forming the ceiling of the stope, the so-called roof. Thanks to lower and raise the hydraulic cylinder 3 can be mounted on the horizontal distance between runners 2 and the roof bar 4 of the roof, and with the help of lever mechanism 6, comprising, respectively, two levers 5, which in this case is made in the form lemniscate lever mechanism whereby the protective shield 10, and the corner of the cylinder 7 is provided that the horizontal rails 2 and the roof bar 4 of the roof in any state of the pull-out of the hydraulic cylinder 3 are essentially plane-parallel relative to each other. Articulated lever mechanism 6 comprises a front lever 5 and the rear lever 5, which are at a distance from each other based on the two pin socket 11 and 12, and runner 2. Pin socket 11 and 12 are made respectively in the side sheet 13 of the protective shield 10, and the roof bar 4 of the roof is connected, then, with the protective shield 10 by a hinge pin, not shown in detail here, which is preferably through the notch 8 in the roof bar 4 of the roof can vdvinut'sâ into the mounting hinge of the roof bar on the protective shield 10, so that the protective shield 10 and the roof bar 4 of the roof hinge to connect with each other. Angular cylinder 7, which is one of his cantonisation to the control console on the protective shield 10, and the other end to the roof bar 4 of the roof, serves to further increase the rigidity of the hinge connection between the protective shield 10 and the roof bar 4 of the roof and can optionally be loaded or unloaded with the help of hydraulics.

The invention relates, in essence, to build, shape and method of manufacturing the protective shield 10, and the protective shield 10 according to the first variant complete with their private parts in the future depicted in figure 2. The protective shield 10 has a solid, in this case, the rectangular top sheet 14, the relevant across the entire width and length of the protective shield 10, on the bottom, regarding the status of the installation according to figure 1, the side of which is installed or welded separate structural elements for connection establishment levers angular cylinder and hinge pin for roof bar roof. From figure 2 clearly shows that on the lower side of the top sheet 14 is the first pair of 15 lateral plates 13, 16, and lateral distance from it is the second pair 15 of the side sheets 13, 16, and side plates respectively, lying outside the designated position 13, and side plates lying within the indicated position 16. Separate side plates can be formed, however, quasiidentity with each other. Respectively on the outer sides of the outer side sheet 13, the mind which is, fixed the locking device 17, to insert and secure against loosening of the hinge pins 18 to pivotally attach the lever 5 (Fig 1) between the side sheets 13, 16 of each pair 15 of the side sheets.

While the rear pin socket 11 are located near the rear end of the lateral plates 13, 16 or top sheet 14, the connecting hinge 21 to the roof bar, through which the hinge pin can move for the connection of the roof bar (4) of the roof (figure 1) with a protective shield 10, protrudes beyond the front edge of the top sheet 14. The feature of the protective shield 10 according to the invention is that the connecting hinge 21 to the roof bar is located on the front end 24 of constructive node 20, which is its flat bottom side 22 adjacent to the top sheet 14 and welded there, and its rear end 24A enters the intermediate space between the side sheets 13, 16 and by means not shown welds at the joints between the structural node 20, on the one hand, and the side sheets 13, 16, on the other hand, are welded to them. Thanks to the welded joint construction unit 20 with the side sheets 13, 16 on the first step of the method to manufacture the main structural node 40, which consists of the lateral plates 13, 16, rigidly connected with each other, as well as of the structural node 20 to attach inim hinge 21 to the roof bar on the front end.

For clarification, reference is made to figure 4, in which the main structural node 40 is depicted in detail, and figa, which shows the first stage of manufacture of the protective shield 10 according to the invention. On figa one, in General, two main structural assemblies 40 are already welded to the bottom side of the top sheet 14. In particular, figure 4 clearly shows that the main structural node 40 is composed, first, of the structural node 20, which at its front end 24 provided with a connecting hinge 21 to the roof bar, and, secondly, of a pair of 15 lateral plates, and side plates 13, 16 strengthened with the formation of hard bottom construction unit with the help of cross member 19 before constructive node 20 to its lower end 24A connects with a pair of 15 lateral plates with welded seams. Because, first, the lower structural node 20 and, secondly, a pair of 15 lateral plates can be manufactured separately and then can be collected in the intermediate or main structural node 40 before they are fixed by means of welded seams of the main construction unit 40 on the side sheet 14, as shown in figa, you can set the exact distance between the Central axes of the connecting hinge 21 to the roof bar and the Central axes of the pin sockets 11, 12, before the main structural bonds is l 40 is welded to the top sheet 14. A further advantage of the method is that the main structural node 40 is first amplified by itself and in this respect can form the element stiffness for coating sheet 14, and simultaneously, it becomes possible that the connection between the main structural node 40 and a covering sheet 14 could be, in essence, only by means of longitudinal seams, which are laid flat along the bottom side 22 of constructive node 20, and the lower edges 13', 16' of the side sheets 13, 16. The production of longitudinal welded seam can be much easier than individual points, spot welding, and provides a more durable connection with a covering sheet 14 and higher rigidity of the protective shield 10.

It also explains figv, which is both lower construction unit 40 with all pin jacks 11, 12, as well as with connecting hinge 21 to the roof bar, protruding beyond the front edge of the top sheet 14, mounted on the top sheet 14 by means of longitudinal welds. In particular, the lower edge 13', 16' of the side sheets 13, 16 free and easily accessible in order to pave the longitudinal welds, if necessary, also by means of a welding robot. Only at the next stage of manufacture, as shown in figs between DNAs is Rennie side sheets 16 is welded to the support console 61 for attaching the corner of the cylinder 7 (Fig 1) to the bottom side of the top sheet 14, and at a distance from each other between the inside side sheets 16 are welded several sheets 62 stiffness, in this case, of rectangular form, to further increase the rigidity and to weld cover plates 65 which are located at a distance from the top sheet 14, and thereby strengthen the whole protective shield 10 with the formation of the box-shaped. Further sheets 63 stiffness can also be warith directly between the structural nodes of the bottom 20 of each construction unit 40, and each sheet hardness is preferably three edges that are perpendicular to each other. To the welding of the closing sheet 65 can be carried out easily, they are provided with slots 66 through which the sheets 62, 63 stiffness are partially edges to the upper edge of the property freely.

Further structural simplification of the protective shield 10 is achieved with a relatively simple construction construction unit 20, a bearing mounting hinge 21 to the roof bar, on the one hand, and 15 pairs of side plates, the increase in the rigidity of which can be managed separately from the covering sheet 14, on the other hand. And without having a simple structure 15 pairs of lateral leaves is especially clear from Fig.7 and 8. As shown, the only element of W is strict connection with each other, the lateral plates 13, 16 15 pairs of lateral leaves consists of a cross member 19, which, as is well seen on Fig, consists of a curved sheet element, the front ends 19' which may be welded to the inner sides of the side sheet 13, which is located on the protective shield respectively on the outside, on the one hand, and the side sheet 16 located inside, on the other side, and bottom hem 19” which can end flush with the bottom sides 13', 16' of the side sheets 13, 16, so you are also in a state of installation of the main construction unit 40 (Fig 3) weld transverse element 19 to the top sheet of the protective shield. As particularly clearly shown in Fig, pin socket in the side plates 13, 16 can be cut before their pairing 15 lateral plates that could be maintained the exact distance of the Central axes of both pin sockets 11, 12 relative to each other, before the transverse element 19 is welded between the side sheets 13, 16. To facilitate welding, between the two pin sockets 11, 12 can perform a round hole 70 through which you can enter additional pin, for example, to attach the cover of the intersection or, if necessary, apply a weld bead. In addition, as shown in Fig.7, on a pair of 15 lateral plates, in particular on the outer side sheet 15, the can is about to secure the locking device 17, before using welds will be a connection pair 15 lateral plates with a design node 20 (figure 5) with the formation of the main structural node.

Similarly, a simple constructive design also has a structural node 20, as it becomes clear from figure 5 and 6. Each structural node 20 is made in the form of welded construction and has two exterior flat sheet strip 23, which could also consist of castings or cast elements and which have a rounded front end 24, is provided on the center of the eyelet 25 round shape, both lugs 25 together in a state of mounting construction unit 20 form a connecting hinge 21 to the roof bar (figure 3). The lower edge 23' of sheet strips 23 is flat, so that each sheet strip 23 and thereby also constructive node 20 could against the top sheet of the protective shield and welded with longitudinal welds. The exact distance between the two sheet strips 23 and increase their rigidity is achieved by using cross-belts 26, which are respectively welded to the inner sides of the sheet strips 23. Except for the area of the flat bottom edges 23' of sheet strips 23 constructive node 20 through a curved protective belts 27, 28 are exposed to increasing stiffness with the formation of partially closed design the AI, moreover, the protective belt 27 may partly adjoin the transverse belts 26 to be welded to the transverse belts 26, or can be superimposed on them to protective belt accurately positioned on a structural node 20. This is particularly clearly shown in figure 5, where you can see only one of both lateral zones 26, to both sides of which is respectively one protective belt 27. The rear end 24A of structural node 20 converges at an acute angle and tapers as the top edge 23 of the sheet strips 23 are at an acute angle relative to the flat bottom edge 23'. The distance of the outer sides of the sheet strips 23 are designed in such a way that the design node 20 can be inserted between the side sheets 13, 16 pairs 15 lateral plates with a small gap for movement, as shown in figure 2, and there can be welded in such a way that the lower edge 23' of the side strips 23 are aligned with the lower edges 13', 16' of the side sheets 13, 16. The connecting welds structural node 20 with a pair of 15 lateral plates are thus preferably along the top edge 23 of the sheet strips 23 to the under side of the main construction unit 40 could be superimposed plane on the top sheet 14 without causing the need for additional processing of welds or the like

On Fig.9-12 shows agradecer the first shield 110 according to the invention in accordance with the second exemplary embodiment, as well as the method of manufacturing of this protective shield 110, slightly modified in comparison with carrying out the method described above. Structural elements having the same functions, the protective shield 110 are reference positions, increased by 100, compared with the previous exemplary embodiment. The protective shield 110 has a solid top sheet 114 of rectangular shape along the entire length and width corresponding to the protective shield 110 to the lower side of which is welded to the first pair of lateral plates 115 and 113, 116 and at some lateral distance from it is welded to the second pair of lateral plates 115 113, 116. While pin socket 111, 112 to attach the levers are located near the rear end of the lateral plates 113, 116 or top sheet 114, the connecting hinge 121 for roof bar, through which you can move the hinge pin for the connection of the roof bar 4 of the roof (figure 1) with a protective shield 110, stands for the front edge of the top sheet 114. According to the invention in the protective shield 110 connecting hinge 121 for roof bar is located on the front end 124 of the construction unit 120, which is its flat bottom side 122 is adjacent to the top sheet 114 and there firmly welded. The rear end 124A construction unit 120 includes or is immersed in the intermediate space between the side sheets is 113, 116 and can be welded to the side sheets 113, 116, with means not shown welds, butt along the grooves.

Principal building construction unit 120, manufactured separately, and a pair of lateral plates 115, manufactured separately, similar to the previous exemplary embodiment. Each structural node 120, as is well seen from 11 made in the form of welded construction and has two external flat sheet strip 123, the front end 124 which is round and in the center is equipped with a lug 125 round shape for the formation of the connecting hinge for the roof bar. The lower edge 123' sheet strips 123 flat, so that each sheet strip 123 and thereby also constructive node 120 to its flat bottom side could against the top sheet of the protective shield and welded to the covering sheet by means of longitudinal welds. To improve the deposition of weld lower edge 123' sheet strips 123 on the regional side, at least on the outside, provided with a relatively deep chamfer 129 or bevel, which is preferably only partially along the front region of the lower edge 123' sheet strip 123. The distance between the two sheet strips 123 and the increase in stiffness is achieved with cross-belts 126, which are respectively welded to the inner side of the sheet strips 123. Constructive node 120, pre-made, initially closed by means of one or more curved covering belts 127 in the area of the front end 124, and these cover belt 127 warialda between the sheet strips 123 and, if necessary, can also fit and welded to the transverse belts. The rear end 124A construction unit 120 converges at an acute angle and tapers as the top edge 123” sheet strips 123 are inclined relative to the flat bottom edge 123' or bottom side 122 of the construction unit 120. In the rear end 124A of the gap between the sheet strips 123 remains open at least until such time as constructive node 120 will not be welded to the covering sheet.

A pair of lateral plates 115, pre-made, as it is evident from Fig, consists essentially only of the lateral plates 113, 116 and the transverse element 119, connecting them, which are respectively welded to the inner sides of the lateral plates 113, 116 and determines the width of the intermediate space. The bottom side 113', 116' lateral plates 113, 116 at least in the front area is equipped with a deep chamfer 149 or bevels or, if necessary, the slots so that, as will be explained, to receive the tabs of the weld by which constructive node 120 is welded to top the list, before the pair of lateral plates 115 will move through constructive node so that the rear end of the structural node sank and was inserted into the intermediate space between the side sheets 113, 116. Pin socket 111, 112 in the side plates 113, 116 can be cut before their pairing 115 of the side sheets. Between the two pin sockets 111, 112 cut a circular opening 170 through which, for example, can be inserted pin for fixing cover the gap. Further, both side of the sheet or at least one 116 of the side sheets are provided with a round hole 171 for the insertion of bolts and/or provided with a bore 172 oval shape so that you can cause additional welds for connecting a pair of lateral plates 115 constructive node 120.

In principle, the protective shield 110 it is also possible first in the first step of the method via a welded joint between the structural node 120 and the side sheets 113, 116 to produce the main structural node, which then as a rigid structural unit consisting of a pair of lateral plates and structural node is welded to the covering sheet. For the protective shield 110, of course, preferable to use an alternative method of manufacture, which is now explained with additional reference n the figures 10A, 10B, 10C.

In the first step of the method, as shown figa, the underside of the top sheet 114 is first welded structural node 120 so that the front end 124 to pivotally attach 121 for roof bar stands for the front side of the top sheet 114. The front side of the covering sheet may be provided with a bevel or chamfer 175, so that after the imposition of a constructive node 120 lower edge 122 on the top sheet 114 can also be applied to the welded seam between the front side surface of the sheet 114 and constructive node 120. As the gap between the sheet strips 123 at the lower end 124A is open, also there, i.e. in the gap or at the joints on the inner sides of sheet strips can cause welds to achieve internal communication between the bottom side 122 of the construction unit 120 and a covering sheet 114 by means of welds done relatively simply. The outer side of the sheet strips 123 are welded to the top sheet 114 preferably by means of welds, running the length of their edges. In the first half of the lower sides of the sheet strips provide a deeper chamfer 129 to apply welds with a large welding influx without excessive protrusion at the side surface of the sheet strips, while the rear half of the construction unit, if necessary, can prevaricates is to coating the sheet with corner bead. In the next step of the method, as shown figv, a pair of lateral plates 115 slides over the rear end 124A construction unit 120 so that the rear end 124A construction unit is immersed in the intermediate space between the side sheets 113, 116. Due to a deep chamfers 149 formed on the inner sides of the lateral plates 113, 116, facing each other, nadivana pair of lateral plates 115 will be held freely, actually, if welds deposited in a deep chamfer 129, stand on the sides for sheet strip 123 due to welding residues, or a greater thickness of material. Then side plates 113, 116 may be welded to the top sheet 114 and through the oval hole 172 may be further welded seams, to get a quasi-solid connection between the structural node 120, a pair of lateral plates 115 and a covering sheet 114. Flat curved covering the belt 128 overlying the gap at the rear end 124A, is welded to the structural node 120 preferably only when it is welded to the top sheet 114. After the first lower structural unit, which consists of structural node 120 115 and a pair of lateral plates were respectively welded, it is possible to weld the second lower structural node in the same sequence of steps.

Only after that the meet is but between the two inner or inside sheet strips 116 both pairs of lateral plates 115 warialda sheets 162 to increase the rigidity. To the rear end of the top sheet 114 may be welded closing jumper 167, which is preferably of cast strip that runs across the width of the top sheet 114 and installation covers the bottom of the tabs 138 on the rear sides of the lateral plates 113, 116. Between the side sheets 116, located inside, again welded the console 116, which can be fixed angular cylinder.

As particularly well seen from Fig.9, and also in the protective shield 110 the whole area between the side sheets 116 is closed using the close leaves 165, and through the hole acts as a support console 161 for angular cylinder. In deviation from the previous example implementation, of course, both constructive node 120 overlap covering sheet 169, which runs respectively from sheet strip 123 one construction unit 120 located outside, to the sheet metal strip 123 of another construction unit 120 outside, and also partial area can log back into the intermediate space between the two sheet strips 116. In the present exemplary embodiment the covering sheet 169 is respectively flush with the covering belts 127, 128, as clearly seen from 11, sheet strip 123 inside, respectively, provided on the center on its upper side 23” recess 145. Thanks to additional welds between the covering sheet 169 and, in particular, sheet strips 123, located on the outside can be achieved with additional stiffening.

From the description above, for the specialist work of numerous modifications that should be included in the scope of protection of the dependent claims. Forming a structural unit having a flanged joint for roof bar, and a pair of lateral plates can be changed without leaving the scope of protection of the dependent claims. It is implied that increasing the stiffness of the individual elements could be implemented using more or fewer individual parts. Of course, they could also use more elements to enhance structural rigidity of the bottom nodes to each other or for the production of single bottom construction unit or constructive node and to change the position and length of the connecting hinge for the roof bar and finger holes relative to each other. You can also change the sequence of steps when connecting individual structural elements, as well as the bottom of the components among themselves.

1. The protective shield shield roof support for underground excavations containing at least one pok is avnoj sheet (14; 114), at least two of the connecting hinge (21; 121) for roof bar, whereby the roof bar roof has the ability to swivel installation protective shield, and side plates(13, 16; 113, 116), arranged in pairs and having a pin socket (11, 12; 111, 112) for fastening levers articulated lever on the protective shield, wherein each of the connecting hinge (21; 121) for roof bar is part of a separately manufactured elongated structural unit (20; 120), which on the front end (24; 124) has a protruding lug (25; 125) dowel pin, which has a flat lower side (22; 122) for adhesion to the covering sheet (14; 114), which rear end (24A; 124A) is included in the intermediate space between the side plates (13, 16; 113, 116) pairs (15; 115) side of the sheets and which is rigidly welded to the side plates (13, 16) by means of welded seams at the joints between the structural unit (20) and side plates (13, 16) and/or rigidly welded to the covering sheet (114) by means of welded seams at the joints between the structural unit (120) and a covering sheet (114).

2. The protective shield according to claim 1, characterized in that the structural unit (20; 120) is formed as a welded structure, which has two outer flat sheet strip (23; 123), which strengthened relative to each other through at least one is th transverse belt (26; 126).

3. The protective shield according to claim 2, characterized in that between the sheet strips (23; 123) welded curved protective belt (27; 127).

4. The protective shield according to claim 3, characterized in that the protective belt (27) are located on both sides of the transverse crosspieces (26) and close structural unit (20) forming a partially closed structure.

5. The protective shield according to one of claim 2 to 4, characterized in thatthat the lower edge (23'; 123') sheet strips (23; 123) are flat and form an area of contact with the covering sheet (14; 114).

6. The protective shield according to one of claim 2 to 4, characterized in thatthat sheet strip (23) each have a rounded front end (24), which is provided with a lug (25) round shape.

7. The protective shield according to claim 1, characterized in that between the side plates (13, 16) are welded at least one transverse element or exactly one transverse element (19).

8. The protective shield according to claim 7, characterized in that the transverse element (19) consists of a curved sheet element, whose face ends (19') are welded to the inner sides of the lateral sheets (13,16).

9. The protective shield according to claim 7 or 8, characterized in that the side plates (13, 16) on both sides of the transverse element (19) is made one cut the hole as the pin socket (11, 12) for fastening of levers by means of hinge pins is yzaga, inserted into the holes.

10. The protective shield according to claim 1, characterized in that the respectively facing each other of the side surfaces of the side plates (16) adjacent pairs (15) lateral plates welded rectangular sheets (62) rigidity that the bottom edge of the adjacent and welded to the covering sheet (14).

11. The protective shield according to claim 1, wherein the covering sheet (14) between the two pairs (15) lateral plates welded on the support console (61) for fastening the corner of the cylinder between the protective shield and the roof bar of the roof.

12. The protective shield according to claim 11, characterized in that the support console (61) consists of a cast part.

13. The protective shield according to one of p-12, characterized in that the sheets (62) rigidity and support console (61) are welded with the closing sheet (65), which preferably has a recess (66) for the partial entry sheets (62) the stiffness and the head part of the support console (61).

14. The protective shield according to claim 1, characterized in that the lower edge (123') sheet strips (123) is at least partially provided with a deep chamfer (129) for placement of welds between the structural unit (120) and a covering sheet (114) and/or that the lower edge of the lateral plates (116) at least partially provided with a deep chamfer (149) to accommodate the welds between the elongated structural node (120) and a covering sheet (114).

<> 15. The protective shield according to claim 1, characterized in that the sheet strip (123) an elongated structural node (120), located in the assembled condition, inside, on its upper side (123") provided with a recess (145) for placement of the covering sheet (169), which passes from the sheet strip (123), located outside, to another sheet strip (123), outside, and preferably welded thereto.

16. The protective shield according to claim 1, characterized in that the rear edges of the side plates (13, 16; 113, 116) is provided with protrusions (138, 139), and between the projections and a covering sheet is welded to the closing jumper (167)passing through the width of the covering sheet (167).

17. A method of manufacturing a protective shield (10; 110) panel supports for underground mining, and the protective shield (10; 110) has a top plate (14; 114), two mounting hinge (21; 121) for roof bar to swivel protective shield with roof bar roof, and pairs of spaced pin socket (11, 12; 111, 112) for connection of the protective shield with the arms of lever mechanism, characterized in that each connecting joint (21; 121) for roof bar is part of an elongated structural unit (20; 120), which are manufactured separately and which on the front end (24; 124) has a protruding lug (25; 15) pin, flat bottom side (22; 122), and a rear end (24A), and the rear end (24A;124A) structural unit (20; 120) is introduced into the intermediate space between the side plates (13, 16; 113, 116) pairs (15; 115) of the side plates and through the welded seams connecting the side panels (13, 16; 113, 116) and/or with a covering sheet (14; 114).

18. The method according to 17, characterized in that the rear end (24A) is first inserted into the intermediate space between the side plates (13, 16) of the pair (15) of the side sheets and with welded seams connect with her before structural unit (20) and a pair (15) lateral plates will be welded to the covering sheet (14).

19. The method according to 17, characterized in that the structural unit (120) is first welded to the covering sheet (114), before the rear end (124A) is introduced into the intermediate space between the side plates (113, 116) and connected with them by means of welded seams.

20. The method according to one of PP-19, characterized in that the first two construction unit (20; 120) with a pair of (15; 115) the lateral plates are welded to the covering sheet (14; 114), and then leaves (63; 165) hardness weld between the side surfaces of the pair (15; 115) lateral plates, facing each other, the side plates (13; 16) and to the covering sheet (14; 114).



 

Same patents:

FIELD: mining.

SUBSTANCE: present invention relates to a collapsible prop of mine timber. The proposed collapsible prop comprises a first metal pipe extending from the base of mine opening, having a first part with a smooth first outer diameter and a second part with a second outer diameter. And the second part comprises at least one metal roller welded to the first part, and a metal ring welded to the first part. The height of the second part from the first is greater than inner diameter of the second pipe by at least 0.15 inches (4 mm). The yield limit of the first pipe is greater than the yield limit of the second pipe. The second metal pipe is located near the first part and extends to the roof of the mine opening, and when the second pipe receives a load from the roof of mine opening, the second part deforms the second pipe and expands the second pipe, creating resistance to the load from the roof of mine opening.

EFFECT: method of creation of timber of the roof of mine opening and construction method of collapsible mine prop is proposed.

18 cl, 15 dwg

FIELD: mining.

SUBSTANCE: proposed complex is equipped with powered roof support section displacement jack attachment drives, rood support being displaced to pans of face conveyor with hydraulic cylinders of adjustment at different inclinations of cleanup face line. It allows a permanent location of face conveyor relative to the point of rock transfer to face loading station. It incorporates spacing-sliding transfer mechanism, guard board elongated part and support section shelter turn drive. Note here that support sections with pans are articulated to make triple units with single control unit. Said powered roof support section displacement jack attachment drive is composed of articulated rabbet joint including perforated grooved guide secured to the pan and moving bracket with fixed rabbet-thrust interconnected by adjustment cylinder for mutual displacement. Overlap shelter is equipped on face chest with shutter extension drive to vary cleanup face line position. It is composed of a set of plate articulated by extending rabbet frame to be extended by hydraulic cylinders articulated with rabbet frame and shelter. Rabbets are articulated with said plates.

EFFECT: higher efficiency.

10 cl, 7 dwg

FIELD: mining.

SUBSTANCE: powered roof comprises basic and linear sections. Note here that manipulator with grippers is mounted at basic section base to displace said linear section after face advance and for installation and dismantling works. Besides, basic section goaf guard is composed of sliding pneumatic blade with the set of air cushions makes a thrust element that cuts off rock structures hung above the stull. Linear section incorporates air post as a thrust composed by a polymer film sleeve reinforced by polymer rings to rest on hardware compartment capsule. Linear section beam is coated with resilient polymer ply to facilitate the contact between lining and roof block structures.

EFFECT: higher stability, ease of installation and dismantling.

3 dwg

FIELD: mining.

SUBSTANCE: invention is related to assembly of a shield support for underground mining, comprising a shield canopy and at least one floor beam as elements of the support surface, which are hingedly connected and may be pressed to the rock with the help of at least one hydraulic cylinder, which is maintained in support troughs on the shield canopy and the floor beam. At the same time each element of the support surface comprises a welded structure from components welded to each other. At least one element of the support surface comprises at least one hollow metal boxy profile filled with a solid substance as a component of the support structure. The invention also relates to a configuration of the floor beam and/or the shield canopy with at least one hollow metal boxy profile filled with a solid substance, preferably, concrete.

EFFECT: provision of high load maintenance without increasing total weight.

44 cl, 8 dwg

FIELD: mining.

SUBSTANCE: device for making recesses in fully-mechanised working face involves an actuating element, drilling rod rotation and supply mechanisms, load-carrying frame, drilling cartridge, screw stems and fastening mechanism. The latter is made in the form of suspension mechanism consisting of hydraulic jacks, the cylinders of which are hinged on the covering of the support section, and their stocks are attached to the load-carrying frame, and a detachable support.

EFFECT: improving the operating efficiency.

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FIELD: machine building.

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EFFECT: reduction of metal consumption, as well as labour intensity with regard to assembly of connection of covering and enclosure in case of repair or erection, and removal of the support section.

4 cl, 4 dwg

FIELD: mining.

SUBSTANCE: section of powered support of supporting-enclosing type includes bottom, four-link chain, hydraulic props and enclosing element and supporting element, which are connected to each other. Besides, support section includes mechanical spacers located between stock of hydraulic props and supporting element, active cap with supporting element and angular telescope-type adjusting jack. Active cap has the possibility of being moved upwards by means of hydraulic cartridges, and angular adjusting jack serves for lifting of supporting element with active cap, thus providing transformation of supporting element with a cap and enclosing element to a single enclosing element.

EFFECT: higher labour efficiency due to reducing the time costs on the support installation during change-over to development of thicker or thinner formation.

4 dwg

Mining module // 2459076

FIELD: mining.

SUBSTANCE: mining module includes section of powered support that consists of foundation, hydraulic support and a canopy. The canopy is attached to mining device on the goaf side of which there are swaying hydraulic cylinders. Note that mining device is done in the form of manipulator with strikers assembly with shearing elements from bottom-hole side that is equipped by hydraulic cylinder of strikers assembly rotation and hydraulic cylinder of manipulator rotation. Note that rotation hydraulic cylinder is pin-jointed by goaf side with platform capable of movement along the canopy of powered support section with the aid of feeding hydraulic cylinder.

EFFECT: mining module provides the possibility to perform coal drawing regarding coal mass cross stratification and allows coal getting by large shear that reduces the required cutting force, decreases specific energy consumption, increases productivity and excludes coal overmilling.

3 dwg

FIELD: mining.

SUBSTANCE: powered support for steep formations of average thickness consists of similar linear sections each of which has roof timber, hydraulic prop of stay brace, shoe, hardware compartment capsule, cave-in and bottom-hole enclosure, as well movement and correction mechanism. Stabilisation and correction mechanism is located on both sides of the hardware compartment capsule and consists of supporting screens and air pads inflating against side surfaces of capsules of neighbouring compartments.

EFFECT: improving serviceability of powered support and its stability and movement method.

2 cl, 3 dwg

FIELD: mining.

SUBSTANCE: facility for connecting sections of support with conveyor consists of bracket rigidly secured on linear section of conveyor and connected with support by means of vertical hinge; support in its turn is connected with vertical ribs of beam of powered roof support section by means of horizontal hinge; hydro-cartridge for control over linear section of conveyor in vertical plane is secured on face surface of support; plunger of hydro-cartridge interacts with beam of section of powered support; also run of hydro-cartridge for control over linear section of powered support in vertical plane exceeds value of support set-off relative to beam of section of support in vertical plane; facility also consists of share located on mining side of conveyor section. The horizontal hinge is connected with vertical ribs of the beam of the section of powered support by means of two coaxial slots made in vertical ribs; also each of slots in vertical plane on ends has rounding with chamfers, the top of the angle between which in each vertical slot is directed to support.

EFFECT: increased functionality of facility under conditions of dirtying due to less dirt ingress and due to self-cleaning capacity of slots during main process operations of facility.

5 dwg

FIELD: mining.

SUBSTANCE: facility for connecting sections of support with conveyor consists of bracket rigidly secured on linear section of conveyor and connected with support by means of vertical hinge; support in its turn is connected with vertical ribs of beam of powered roof support section by means of horizontal hinge; hydro-cartridge for control over linear section of conveyor in vertical plane is secured on face surface of support; plunger of hydro-cartridge interacts with beam of section of powered support; also run of hydro-cartridge for control over linear section of powered support in vertical plane exceeds value of support set-off relative to beam of section of support in vertical plane; facility also consists of share located on mining side of conveyor section. The horizontal hinge is connected with vertical ribs of the beam of the section of powered support by means of two coaxial slots made in vertical ribs; also each of slots in vertical plane on ends has rounding with chamfers, the top of the angle between which in each vertical slot is directed to support.

EFFECT: increased functionality of facility under conditions of dirtying due to less dirt ingress and due to self-cleaning capacity of slots during main process operations of facility.

5 dwg

FIELD: mining.

SUBSTANCE: powered support for steep formations of average thickness consists of similar linear sections each of which has roof timber, hydraulic prop of stay brace, shoe, hardware compartment capsule, cave-in and bottom-hole enclosure, as well movement and correction mechanism. Stabilisation and correction mechanism is located on both sides of the hardware compartment capsule and consists of supporting screens and air pads inflating against side surfaces of capsules of neighbouring compartments.

EFFECT: improving serviceability of powered support and its stability and movement method.

2 cl, 3 dwg

Mining module // 2459076

FIELD: mining.

SUBSTANCE: mining module includes section of powered support that consists of foundation, hydraulic support and a canopy. The canopy is attached to mining device on the goaf side of which there are swaying hydraulic cylinders. Note that mining device is done in the form of manipulator with strikers assembly with shearing elements from bottom-hole side that is equipped by hydraulic cylinder of strikers assembly rotation and hydraulic cylinder of manipulator rotation. Note that rotation hydraulic cylinder is pin-jointed by goaf side with platform capable of movement along the canopy of powered support section with the aid of feeding hydraulic cylinder.

EFFECT: mining module provides the possibility to perform coal drawing regarding coal mass cross stratification and allows coal getting by large shear that reduces the required cutting force, decreases specific energy consumption, increases productivity and excludes coal overmilling.

3 dwg

FIELD: mining.

SUBSTANCE: section of powered support of supporting-enclosing type includes bottom, four-link chain, hydraulic props and enclosing element and supporting element, which are connected to each other. Besides, support section includes mechanical spacers located between stock of hydraulic props and supporting element, active cap with supporting element and angular telescope-type adjusting jack. Active cap has the possibility of being moved upwards by means of hydraulic cartridges, and angular adjusting jack serves for lifting of supporting element with active cap, thus providing transformation of supporting element with a cap and enclosing element to a single enclosing element.

EFFECT: higher labour efficiency due to reducing the time costs on the support installation during change-over to development of thicker or thinner formation.

4 dwg

FIELD: machine building.

SUBSTANCE: device for connection of covering with enclosure of powered support section includes coaxially located eye-lugs of retractable sides of the covering and enclosure, which are hinged with pins, the diameters of holes of which are larger than the pin diameter. Two coaxial cylindrical bushings with projections and cavities are installed in eye-lugs of retractable sides of covering and enclosure. At that, bushings are provided with possibility of being attached to each other by turning the external bushing, the projections of which are engaged with projections of internal bushing, thus preventing their axial displacement relative to each other, with further fixation of that position by means of fixing pin. Besides, pin is installed into mutually coaxial holes made in bushings and radially offset relative to their rotation axis.

EFFECT: reduction of metal consumption, as well as labour intensity with regard to assembly of connection of covering and enclosure in case of repair or erection, and removal of the support section.

4 cl, 4 dwg

FIELD: mining.

SUBSTANCE: device for making recesses in fully-mechanised working face involves an actuating element, drilling rod rotation and supply mechanisms, load-carrying frame, drilling cartridge, screw stems and fastening mechanism. The latter is made in the form of suspension mechanism consisting of hydraulic jacks, the cylinders of which are hinged on the covering of the support section, and their stocks are attached to the load-carrying frame, and a detachable support.

EFFECT: improving the operating efficiency.

1 dwg

FIELD: mining.

SUBSTANCE: invention is related to assembly of a shield support for underground mining, comprising a shield canopy and at least one floor beam as elements of the support surface, which are hingedly connected and may be pressed to the rock with the help of at least one hydraulic cylinder, which is maintained in support troughs on the shield canopy and the floor beam. At the same time each element of the support surface comprises a welded structure from components welded to each other. At least one element of the support surface comprises at least one hollow metal boxy profile filled with a solid substance as a component of the support structure. The invention also relates to a configuration of the floor beam and/or the shield canopy with at least one hollow metal boxy profile filled with a solid substance, preferably, concrete.

EFFECT: provision of high load maintenance without increasing total weight.

44 cl, 8 dwg

FIELD: mining.

SUBSTANCE: powered roof comprises basic and linear sections. Note here that manipulator with grippers is mounted at basic section base to displace said linear section after face advance and for installation and dismantling works. Besides, basic section goaf guard is composed of sliding pneumatic blade with the set of air cushions makes a thrust element that cuts off rock structures hung above the stull. Linear section incorporates air post as a thrust composed by a polymer film sleeve reinforced by polymer rings to rest on hardware compartment capsule. Linear section beam is coated with resilient polymer ply to facilitate the contact between lining and roof block structures.

EFFECT: higher stability, ease of installation and dismantling.

3 dwg

FIELD: mining.

SUBSTANCE: proposed complex is equipped with powered roof support section displacement jack attachment drives, rood support being displaced to pans of face conveyor with hydraulic cylinders of adjustment at different inclinations of cleanup face line. It allows a permanent location of face conveyor relative to the point of rock transfer to face loading station. It incorporates spacing-sliding transfer mechanism, guard board elongated part and support section shelter turn drive. Note here that support sections with pans are articulated to make triple units with single control unit. Said powered roof support section displacement jack attachment drive is composed of articulated rabbet joint including perforated grooved guide secured to the pan and moving bracket with fixed rabbet-thrust interconnected by adjustment cylinder for mutual displacement. Overlap shelter is equipped on face chest with shutter extension drive to vary cleanup face line position. It is composed of a set of plate articulated by extending rabbet frame to be extended by hydraulic cylinders articulated with rabbet frame and shelter. Rabbets are articulated with said plates.

EFFECT: higher efficiency.

10 cl, 7 dwg

FIELD: mining.

SUBSTANCE: present invention relates to a collapsible prop of mine timber. The proposed collapsible prop comprises a first metal pipe extending from the base of mine opening, having a first part with a smooth first outer diameter and a second part with a second outer diameter. And the second part comprises at least one metal roller welded to the first part, and a metal ring welded to the first part. The height of the second part from the first is greater than inner diameter of the second pipe by at least 0.15 inches (4 mm). The yield limit of the first pipe is greater than the yield limit of the second pipe. The second metal pipe is located near the first part and extends to the roof of the mine opening, and when the second pipe receives a load from the roof of mine opening, the second part deforms the second pipe and expands the second pipe, creating resistance to the load from the roof of mine opening.

EFFECT: method of creation of timber of the roof of mine opening and construction method of collapsible mine prop is proposed.

18 cl, 15 dwg

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