Cutter for grader and grader for grading devices

FIELD: process engineering.

SUBSTANCE: set of inventions relates to cutters to be attached to grader body element and to underground extraction graders, particularly, to development of steeply inclined coal seams. Grader comprises body with means to guide it in its guides, cutters with multiples seats for individual cutters. Grader comprises split body with two main elements and body mid element to be fitted between said main elements and tool plate attached to grader body mid element. Tool plate front has recesses for fixation of cutter seats while its rear has slitted recess for rigid connection of fixation ledge made at grader body mid element. Tool plate rear part front end has longer top part and shorter locking part with slitted recess made there between.

EFFECT: reliable attachment of cutters, optimized development of minerals.

16 cl, 9 dwg

 

The invention relates to plow cutting device for attachment to a plow element of plow body for extraction by underground mining, particularly coal plow for excavation steeply inclined coal seams, with many nests to host, preferably with the possibility of disconnection, respectively, of one cutter to the nest. In addition, the present invention relates to a plow to plow facilities for the development of mineral deposits in the inclined formation, in particular coal plow for excavation steeply inclined coal seams, with the plough body, guide means for guiding the plow on the guiding device plow and razzolini devices that have multiple slots for placement, preferably with the possibility of disconnection, respectively, of one cutter on the socket.

Over the last two decades, automatic mechanization of production horizontally placed seams of coal with incidence angle 0-20 gon and deposits with a slightly inclined position with the angle of incidence of 20-40 gon brought the extraction capacity of up to 1,500 t/h with the use of planes in plow installations, and more than 2,600 t/h using excavation harvesters. While more than 90% of the volume of coal mined by underground methods, relates to the fields with the horizontal is diversified and a slightly inclined position, since the latter can be much more economical with the use of available technology mining than coal seams or other mineral deposits in silvanolinom position with an angle of more than 40 rut, or in steeply dipping formations with angle 60-100 gon.

Coal plow, which is equipped with a tool holder, which is made to rotate in accordance with the direction of motion and which moves reciprocating in the underground working face parallel to the front of mining using continuous chain plane, successfully tested for excavation horizontally-lying coal seams. Each tool holder equipped with a variety of jacks for incisors, which, in turn, can be placed plow cutters with the possibility of disconnection. To achieve different heights of the notches with the same coal plow, additionally provides the upper tool holder, which is placed centrally between the two rotary cutter holders and which can extend or retract accordingly, for example, by means of the worm gear. If possible, the same slot cutter is fixed on the rotary cutter holders, and on the upper tool holder to minimize production costs. DE 3923969 C2 OPI is indicates as an example of such a coal plough, with the rotary cutter holders and upper holders.

There are many different options for fixing the plow cutter in the slot so that the extraction of mineral resources, particularly mining of coal or other minerals with plow incisors at the front of mining could be carried out reliably and with sufficient tool life. DE 10161015 A1 describes only as an example, the cutting device having a slot cutters and strugovyj cutter, which may be secured in the socket 130 for the cutter.

DE 31 06 565 A1 describes a plane with knives, containing a cutting device for attachment to a plow element of plow body with knives for underground mining, having at least two slots to accommodate one edge on each socket, which are fixed in the recesses on the front side of the tool bar, which is equipped on the rear side of the at least one grooved recess of the rigid engagement of the locking tab on the plow element body and which is configured to releasable attachment to the plow element casing by removable fastening means. The specified tool strap is located between the first movable element plow body and the second movable element plow body, thus cutting square the NCA serves as a manual cutting device for the extraction of coal in the stepped part of the surface. With this purpose, the tool bar can be moved vertically in order to reduce or increase the height of the plane.

The aim of the present invention, therefore, is the creation of a cutting device and plow, which can be used preferably in the case of planes, or plow devices, in particular for the development of a steeply mineral deposits, and that enable cost-effective development of such mineral deposits, in particular coal seams.

These and other objectives are achieved in relation to the cutting device, in which at least two slot cutters secured in the recesses on the front side of the cutting of the strap, thus cutting strap provided on the back side of at least one grooved recess of the rigid engagement of the locking tab on the item plow body and attached with the ability to detach the plow element casing by removable fastening means. In the case of a cutting device according to the present invention many slots incisors, thus, is fixed on the cutting plate, which forms a removable part, which, accordingly, can be attached to the element plow body or detached from the latter. Grooved recess on the back side of the cutting plan is and the locking tab on the item plow body, which rigidly engages the slotted recess, provide together with fastening means to cutting Planck did not drop out during mining and to all forces transmitted to slot cutters through the plow blade could sufficiently be transmitted to the corresponding element of the plow body of the plane.

In a particularly advantageous variant implementation, tool strap is on the back towards the front side of the longer upper part and a shorter hook part, which are displaced relative to each other in height and between which made the slot recess. This embodiment of the cutting of the strap allows it to stalkivatsja element plow body, at the same time with a significant contact area between the tool bar, on the one hand, and element of the plow body, on the other hand, thereby not only provides the best support tool bars, but also facilitates the installation or disconnecting, up until not provided with the engagement groove of the recess and the locking protrusion, such that the surface, relying on each other, form the guiding surfaces. Particularly preferably, if the rear edge of the upper part forms a locking tab for mounting in the locking recess on the element of the plow body, d is I to cutting plank was fixed on the plow element housing on two sites, which are placed at some distance from each other, and to the removable fasteners are not subjected to the load due to the large forces that occur during operation.

The upper part can be provided, in particular, two round bushing channels, respectively, one of the fastening means at the entrance of the channel. In addition, it is preferable that the front side of the cutting strips can gradually move through the inclined surface in short order to achieve with the inclined surface of a corresponding discharge of extracted minerals in the discharge channel, in particular grooved channel plow devices, particularly preferably, if the inclined surface is in the established state lies at the same level relative to the bevel or inclined surface on the front side of the plow body.

For all the constructive executions, preferably, if the slot cutters fastened, in particular welded, to the recesses which are open towards the upper side of the upper part of the cutting plate. The reverse side of the recesses can, then, form the focus through which the force is introduced into the slot of the cutters disposed first on the tool bar and then, in particular through the surrounding walls of the slot depressions on ale the NT plow body. The present invention provides particular advantages when cutting strips can be used multiple times, according to the modular principle, the element of the plow body or on different elements of the plow body. At the same time, it is preferable, if available, using the cutting of the strap, which is located adjacent plow cutters are placed so that their cutting edges rejected in relation to the direction of movement of the plow in order to improve the breaking off of minerals and disposal of the extracted materials. Depending on the width and meaningful implementation of the plow element housing at least the upper part of the cutting of the strap may be made in the form of a parallelogram, in order that the biased engagement of the cutting edges of the individual plow cutters has been achieved already through the main form the top. At the same time, in order to achieve a symmetrical distribution of individual cutters on the width of the plow, front side in the case of the alternative, the second variant implementation of cutting strips may, however, be in the form of a wedge or curve, and the upper part of this for the incisor teeth of the strap has the greatest depth in the center. Slot cutters can then be placed on the front side so that one slot cutter was located in the center, and strugovyj cutter, mounted in the Central slot cutter, was placed with a shift forward in the direction of the development in relation to all others to plough cutters. Wedge-shaped or curved cutting plank, in particular, suitable for use in the case of the use of the plow elements of a small width and/or in the center of the wide element plow body equipped with multiple cutting blades. For all the constructive executions, particularly preferably, if placed on the cutting strip approximately 4-8, in particular 4-6 slots incisors.

The above objective is also achieved in respect of a plough according to the invention, opened in paragraph 10 of the claims. According to the present invention, the plow has a collapsible strugovyj body having two main elements of the plow body, which contain the directing means, and having at least one intermediate element plow body, which can be inserted between the main element of the plow body to increase the width of the plow body, or the height of the cut plane, and at least one cutting plank is secured and is made with the possibility of attaching to the intermediate element plow casing by removable fastening means, and cutting the bar has at least two ug is obline for to capture at least two slot cutters on the front side of the cutting of the strap, and that on the reverse side provided with at least one grooved recess of the rigid engagement of the locking protrusion is performed on the intermediate element plow body.

According to a preferred variant implementation of the intermediate element of the plow body can be placed on the front side facing in the direction of development, with jutting forward retainer strap, as the locking protrusion, the upper surface of which continues later in the locking recess configured to shift backward and upward relative to the locking protrusion so that the tool bar has been rigidly mounted on the intermediate element plow housing on two sites that are located at some distance from each other. The upper surface of the intermediate element of the plow body can be provided with two blind holes in the bottom or near the bottom which can be fixed mounting screws fastening means. For this purpose, each blind hole may be provided with a threaded hole near its base or preferably provided with countersunk recesses to accommodate the heads of screws mounting screws. Celes is figuratively, each intermediate element plow body also has, at its transition front side to the lower side of the inclination angle, which is particularly preferably in combination with an inclined surface on the tool in order to improve the discharge of the extracted materials in the discharge channel in the case of the development of a steeply fields.

Fastening means for attaching with the ability to detach the cutting bar of the plow may be, in particular, the mounting sleeve, which may consist of a cylinder without, or, preferably, with the annular ledge. In relation to the possible execution of the annular ledge while in the established state, can rely on the upper part of the cutting of the strap and attached closely to the upper part of the cutting of the strap by means of fixing screws, through its head of the screw is fixed on the intermediate element plow body, in particular, in the deep hole on the intermediate element of the plow body. Alternatively, the annular protrusion, the prescribed condition may also be located at some distance from the top and, for example, to accommodate a hidden way the nut for tightening the mounting screws. In this case, the mounting screw only protects the mounting sleeve from coming off, for example, arise in which the result of vibration during operation, without cutting strips, pressed against the intermediate element plow body by means of the mounting sleeve.

Further advantages and developments of the present invention is shown by the following description of exemplary embodiments schematically shown in the drawings, in which:

Fig.1 depicts a plot plow device for developing a steeply inclined coal seams by means of a plough according to the present invention includes a cutting device according to the present invention, in accordance with the first exemplary embodiment;

Fig.2 depicts a second exemplary variant implementation of a plow having a cutting device according to the present invention;

Fig.3 depicts a plane shown in Fig.2, in top view;

Fig.4 depicts a partially open view in section of the fastening means for attaching the cutting bar of the plow element body;

Fig.5 depicts a view in section along V-V shown in Fig.4;

Fig.6 depicts a partially open side view of the cutting of the strap according to the present invention;

Fig.7 depicts a side view of the cutting of the strap shown in Fig.6;

Fig.8 depicts the tool bar shown in Fig.7, when viewed from the left; and

Fig.9 depicts a perspective view of the tool of the strap shown in Fig.6-8, the mounting and means shown on the form with the spatially separated parts.

In Fig.1 reference character 1 designates the plough system for coal mining by underground methods in steeply inclined coal seam with the steepness of the slope, for example, more than 45 rut. Plow 1 can be moved in parallel relative to the front of mining in steeply dipping deposits, and Fig.1 depicts a top view of the plow 1 relative to the front of mining, however, for clarity, the inclination of the plow is not shown. Plow 1 is composed, in a known manner, from a variety of grooved trays 2 are mutually identical design, which are made preferably in the form of a corner of the pallet and which, through the lower part 3, based on the so-called soil slaughter, which is inclined relative to the horizontal, at an angle corresponding to the value of the slope, in this part 4, aligned approximately perpendicular to it, continues in operation, parallel to Oistamo slaughter, or to the front of mining. Part 4 grooved trays 2, near its upper end, is screwed supporting levers 5, through which the upper guide otherwise piece element 6A is based on a sufficient distance, the grooved element 2 so that the upper guides otherwise piece elements 6A, posted when expressed is nevinii relative to each other, can form the upper guiding device for a plow, indicated in General in Fig.1 using the reference position 50. To the lower part 3 of the grooved tray 2, and opposite and parallel to the upper guide rails 6A, attached to the bottom otherwise piece guide element 6B as the lower guide devices plow 1, and the plane 50 is sent with just four rotary sliding shoes 7, of which only the rear sliding shoes can be seen in Fig.1, the upper guide otherwise piece elements 6A, on the one hand, and on the lower rails otherwise piece elements 6B, on the other hand. Guides otherwise piece elements 6A, 6B and the plane 50, in the assembled state, is placed at a relatively great distance from part 4 of the grooved trays 2.

In the case of steeply inclined coal seam mining operations are carried out using plane 50 in the direction of the arrow A, to which the plow 50 or moves up in the direction of the arrow A, by means of two continuous circuits 8A, 8B of a plow, is attached to the plane 50, the so-called head of the section for the implementation of the mining works, or moves back down, opposite to the arrow direction a, to the section for excavation, without the exercise of mining activities during this reverse movement.Material, produced during the movement of the plane 50 in the direction of a seizure, falls into the tray-shaped tray. The extracted material is forced to slide into sections for excavation through essentially the inclined position of the grooved trays 2 or plow 1. For a more detailed description of the design of the plow 1 reference is made to the application of the present applicant's patent, registered on the same date, for a plow and plow, and the disclosure content of which is included in this document under reference in its entirety.

The plane 50, as shown in the exemplary embodiment according to Fig.1, consists generally of four elements plow body, namely two outer core elements 51 plow body, to which the guide shoes 7 and circuits 8A, 8B plow attached, or attached movably to rotate, and the two intermediate elements 55 plow body, which is configured to detach from each other and which are attached to one of the main elements 51 plow body. In addition, each primary element 51 plow body provided with a tool holder 52, which respectively made with the possibility of rotation around the rotary pin 53 supported on the main element 51 plow body. Each tool holder 52 is provided in e is th case, family strahovymi cutters 54, and the ability to rotate the holders 52 ensures that the plow cutters 54 are in active interaction with the front of the treatment works only when the plow 50 is moved in the direction of a seizure. Two intermediate element 55 plow units are identical to each other in their design and serve to increase the width or depth of dredging, Struga 50 compared with coal plow, consisting only of two basic elements 51 plow body.

The application of the present applicant's patent, registered on the same date as the present application, and which above was already referenced, also applies, in particular, to the design and nature of the connection of the main elements 51 plow body to one or more intermediate elements 55 plow body, and reference is made to this copyrighted application in order to Supplement the present disclosure. The present invention relates, in particular, to the implementation and design of the cutting device 10, which is provided intermediate elements 55 plow body. In Fig.1, each intermediate element plow chassis equipped with one cutting plate 11 according to the first variant implementation. Before describing the design of the cutting of the strap 11, however, call the reference to Fig.2 and , which depict a second alternative exemplary variant of the implementation of the plow 150, with many cutting tools or cutting strips on the intermediate elements 155 plow body.

As is clear from comparison with Fig.1, the plane 150, shown in Fig.2 and 3, has a greater width than the plane according to Fig.1, although only one intermediate element 155 plow body is set between the two main elements 151 plow body. However, in the case of a plane 150 of the intermediate element 155 plow body consists of a wide, made as one unit, building, hosting three different design cutting device 110, 110' and 10. The intermediate element 155 plow body is attached with a removable, respectively, to the outside of the main element 151 plow body to which are attached, respectively, movably can be rotated, two sliding Shoe 107 to guide the plane on the coal plow installation. Aspect according to the present invention consists in the cutting device 10, 110 and 110', made in the form of a removable wear parts, which allow quick replacement and reuse. For this purpose, each cutting device 10, 110 and 110' according to the present invention has a tool bar 11, 111 and 11', respectively, and five slots 130 for cutters secured, respectively, on each of the tool bar 11, 111 and 111'. In turn, strugovyj cutter 131 is inserted in each slot 130 for cutting tools.

Further reference is made to Fig.4-9, which in the example depicted in detail cutting device 110 having a tool bar 111, which in this case is performed using the main zone approximately in the form of a parallelogram. In particular, Fig.5-7 and Fig.9 clarify that each tool strap 111 has a cross section which is essentially constant in width and contains a longer, wider top portion 112, and a shorter fixing part 113 below the upper part 112. Slotted recess 114, open in the opposite direction, which rigidly engages the locking projection 156, shown in Fig.5, on the front side 157 of the intermediate element 155 plow body is executed between the upper part 112 and the fixing part 113, which are connected by a thick base, which forms the front side 115. Front side 115 of the cutting of the strap 111 is gradually transformed into a shorter locking portion 113 through the inclined surface 116. The upper part 112 is provided on the rear edge 117 offset, allowing the upper part 112 through the opposite edge 117 to form a locking you blunt, which, again shown by Fig.5, in assembled position rigidly mounted in the locking recess 158 in the intermediate element 155 plow body. Therefore, in the assembled position, each cutting strap 111 is rigidly attached to the intermediate element 155 plow body by means of two sheet connections, held essentially parallel to the front side 115.

Each tool strap 111 is supplied, in this case, accordingly, five recesses 160, which is open forward, toward the front side 115, and upward toward the top surface 112' of the upper part 112. In all exemplary embodiments, the implementation of each tool strap 112 is respectively the five recesses 160, made so that they are identical to each other, and the slot 130 for the cutter, which is set strugovyj cutter 131 with removable essentially known manner, is fixed, in particular welded each recess 160. In a preferred execution, in this case the same socket 130 for cutter and preferably the same plow cutters 131 are used as cutting a frame 11 (Fig.1-3) cutting devices 10 and compound bars 111 cutting devices 110, 110'.

Next, reference is again made to Fig.1-3. Cutting device 10, each of which is composed of one cutting strips 11, attached to the intermediate elements 55 plow of plow body 50 in Fig.1. Cutting device 10 such constructs containing the tool bar 11, also mounted centrally on the intermediate element 155 plow body between rescueme straps 111, in the form of a parallelogram attached to the left of this cutting of the strap 11, and razzolini straps 111', attached to the right. Essentially, the cutting device 110 and 110' differ only on the angular position of the parallelogram and applications, thus defined, left or right, respectively, on the intermediate element 155 plow body, with all the cutting of the strap 11, 111, 111' are in each case rigidly attached to the intermediate elements 55 or 155 plow body in the same way and using the same fastening means 70. Below explains the design and mounting assemblies laths by means of fixing means 70.

Each of the upper part 112 of the cutting strips 111 has two round flow channel 122, which can be inserted from above the fixing sleeve 72, is supplied here, the annular protrusion 71. Each of the fixing sleeve 72 has a Central, stepped through hole 73 for threading mounting screw 74 and the secret placement of nuts 77. Each fastening screw 74, in turn, has a head 75 of the screw its threaded section 76, which can be the top screwed a nut 77, when cutting strap 111 is in the prescribed position on the intermediate element 155 plow body and, accordingly, the slot recess 114 and the locking projection 156, or the locking recess 158 and the rear edge 117 of the upper part 112 rigidly engage each other. It's a tough mutual engagement in two areas along a relatively long surfaces in each case, may be sufficient to ensure that, when used in the work, to take on the case of the intermediate element 155 plow body all the forces applied to the plough cutters, and only when necessary to provide a mounting sleeve for fixing this situation. Then, when the fixing sleeve 72 is pressed to the body intermediate element plow body with the fixing screw 74, the annular ledge should have a small air gap relative to the upper part. Alternatively, the annular protrusion 71 can snuggle up with its lower annular ledge, close to the upper part 112 and, by tightening the nut 77, is the installation position can be additionally protected from disconnection. To secure the head 75 of the screw fastening screw 74 on the intermediate element 155 plow body is provided by the upper surface 162, prod is lausiaca over the locking projection 156 and having respectively one deaf hole 163 in the mounting means 70, and cut the groove 164, in which the head 75 of the screw can be inserted, preferably for protection against rotation, as shown in particular by Fig.4 and 5, placed near the bottom of a blind hole 163. In order to dismantle the tool bar 111 is necessary or first remove the mounting sleeve 72, or the entire tool strap 111 is moved perpendicular to the direction of movement or the direction of the cut plane, with loose nuts 77, but the installed mounting sleeve 72, as long as the head 75 of the screw are not exempt from the cut grooves, in order then, after removing the mounting sleeves 72 and mounting screws 74 for cutting strips, which must be drawn forward, resulting in only released tight engagement with the groove of the recess 114 and the locking projection 156, or the rear edge 117 and the locking recess 158. In the established state, the bevel 116 on the front side 115 of the cutting of the strap 11 is approximately the same level in relation to the inclined surface 161, through which the front side 157 intermediate elements 155 plow body gradually becomes lower side.

Despite the fact that cutting strips 111 and 111' can be repeatedly attached to the same intermediate elements 155 plow body, cutting plan is and 11 are designed to attach both to the intermediate elements 55 plow body, and to the intermediate elements 155 plow body. Cutting plank 11 is not in the form of a parallelogram and has a front side 15, continued in the form of a curved arch, as shown particularly clearly by means of Fig.2, for this reason, the average strugovyj cutter of the five plow cutters 131 attached to the tool bar 11, is further forward in the direction of the grooves than plow cutters 131 attached near this average plough cutter, on the same tool bar 11. Therefore, in the case of a plane 50 can be achieved approximately W-shaped profile of the cutting edges of all plow cutters 131 and 54.

For professionals, the above description leads to the creation of numerous modifications, which should be included in the scope of protection of the attached claims. The drawings show only two exemplary variant of the implementation of the plow. Assume that the intermediate casing shown in Fig.1, can be applied in the form of only one intermediate element or also in the form of more than two intermediate elements between the main elements of the plow body. It would also be possible to use other, different intermediate elements of the plow body to which are attached more or less cutting strips. The number of slots of the cutter and plow cutters cutters on the Yu bar can vary between three and eight, in particular, between four and six. Plow cutters are preferably fixed with the possibility of disconnection in the respective slots of the cutter. Since cutting of the strap can be removed with a plow body, however, it would also be possible fixed mount plow cutters in the slots of the cutter.

1. Cutting device for attachment to a plow element of plow body for underground mining, particularly coal plow for the development of steeply inclined coal seams, with many nests (130) to host, preferably removable, one cutter (131) on each slot (130), and at least two slots (130) for cutters fixed in the recess (160) on the front side of the tool bars (11; 111; 111'), which is provided on the rear side of the at least one grooved recess (114) for rigid engagement of the locking tab on the item plow body and configured to releasable attachment to the plow element casing by removable fixing means (70), characterized in that the tool bar (11; 111, 111') is on the rear of the front side (115) longer upper part (112) and a shorter locking part (113), between which made the slot recess (114).

2. Cutting device under item 1, characterized in that the deposits of the region (117) top (112) forms a locking tab for mounting in the locking recess on the element of the plow body.

3. Cutting device under item 1 or 2, characterized in that the upper part (112) is equipped with two round bushing channels (122) for, respectively, one fixing means (70) at the entrance of the channel.

4. Cutting device under item 1, characterized in that the front side (115) cutting strips gradually passes through the inclined surface (116) in a short part (113).

5. Cutting device under item 1, characterized in that the slot (130) for cutters fixed in the recess (160), open towards the upper side (112') of the upper part (112).

6. Cutting device under item 1, characterized in that at least the upper part (112) of the tool bars (111) is made in the form of a parallelogram.

7. Cutting device under item 1, characterized in that the front side (15) of the tool bars (11) takes the form of a wedge or curve, and the upper part has the greatest depth in the center of the cutting of the strap, with the slot (130) for incisors are located on the front side (15) so that one slot cutter is located in the center.

8. Cutting device under item 1, characterized in that the cutting plate (11; 111) posted by four to six slots for blades.

9. The plow to plow installations for the exploitation of mineral resources in an inclined formation, in particular for excavation steeply inclined coal seams, with the plough body, guides cf is the funds (7; 107) to plow (50; 150) according to the guiding device plow and razzolini device (10; 110) having multiple slots (130) to host, preferably removable, one cutter (131) on each socket, characterized in that the plane (50; 150) contains split strugovyj body having two main elements (51; 151) plow body, at least one intermediate element (55; 155) plow body, inserted between the main elements of the plow body to increase the width of the plow body, and at least one tool bar (11; 111, 111'), attached or configured to attach to the intermediate element (55; 155) plow body, thus cutting strap provided on the front side (15; 115) at least two recesses (160) for fixing at least two slots (130) for cutters on the cutting plate (11; 111; 111') and on the reverse side provided with at least one grooved recess (114) for rigid engagement of the locking protrusion (156), performed on the intermediate element (55; 155) plow body, and tool bar (11; 111, 111') is on the rear of the front side (115) longer upper part (112) and a shorter locking part (113), between which made the slot recess (114).

10. The drag on p. 9, otlichalis the same time, that the intermediate element (155) plow body fixed many cutting strips (11; 111; 111'), each of which has four or eight slots for blades.

11. The plow under item 9 or 10, characterized in that the intermediate element housing is fitted with a plow on the front side (157), facing in the direction of the recesses, protruding forward retainer bar (156), as the locking protrusion, the upper surface (162) which takes place later in the locking recess (158).

12. The drag on p. 11, characterized in that the upper surface (162) provided with two blind grooves (163), at the base which can be fixed mounting screws (74) fixing means (70).

13. The plow under item 12, characterized in that the housing recess (163) provided with screw holes or preferably countersunk recess (164) for placement heads (75) mounting screws (74).

14. The drag on p. 11, characterized in that the intermediate element (55; 155) plow body provided with a bevel (161) front side (157) to the bottom.

15. The plow under item 9, characterized in that the fixing means (70) have the mounting sleeve (72), which is preferably provided with an annular protrusion (71), which is in the established state rests on the upper part (112) and is configured to clamp to the upper part (112) of the tool bars (111, 111') using crepe is the author of the screw (74) or placed at some distance from the upper part (112) with an air gap.

16. Cutting device under item 1, characterized in that the fixing means (70) have the mounting sleeve (72), which is preferably provided with an annular protrusion (71), which is in the established state rests on the upper part (112) and is configured to clamp to the upper part (112) of the tool bars (111, 111') with mounting screw (74) or placed at some distance from the upper part (112) with an air gap.



 

Same patents:

FIELD: mining.

SUBSTANCE: invention refers to mining industry, and namely to towing trolley for underground mining drawknife. Towing trolley for underground mining drawknife includes a towing trolley body inserted in the drawknife body cavity, which is provided on rear side of the cavity guide with a connection element to fix the drawknife chain, and on front side of the cavity guide - with front part, the ends of which indicate the movement direction and form thrust surfaces to interact with counter-thrust surfaces in the drawknife body cavity; at that, a damping device is integrated into the front part of towing trolley and acts with damping in both movement directions. Connection element is movable relative to thrust surfaces with overcoming of back force of damping system of damping device, which is located between thrust surfaces. The provision is made for a receiving body that is rigidly connected to the connection element to receive the damping system. Thrust surfaces form ends of movable bushing, in inner space of which the receiving body is located in movable manner; at that, inner sides of thrust surfaces preferably form thrusts for relative movement between movable bushing and receiving body.

EFFECT: increasing the device efficiency.

16 cl, 12 dwg

FIELD: mining.

SUBSTANCE: guide for pulling chain of mining machine, namely for chain of plough on mining plough with drive stations and/or rotary sprockets of pulling chain (11), which are installed in end sections of mining machine, and at least with one element (21; 121) of the guide for chain, which are spatially located near chain sprockets (18) on drive station and/or turning station and pressed across chain movement direction to its load and/or empty branch. Element (21; 121) of chain guide includes at least one pressure roller (22; 122) pressed to links (33) of pulling chain (11); at that, pressure roller (22; 122) is installed on roller axis (29; 129) with possibility of rotation and replacement together with it. Axis (29; 129) of pressure roller (22; 122) rests on brackets (28, 28A; 128) of bearings, which are installed in receiving pocket (40; 140); besides, brackets (128) of bearings in receiving pocket (140) are protected against unfixturing at least by means of one retractable fixture (190). Pressure roller (22; 122) has bearing race (23) matched with enveloping surface (34) determined with links (33) of the chain. Pressure roller (22; 122) is arranged in lead-in unit (25; 125) installed in inlet section (19) of drive station and/or turning station (17) with possibility of being replaced. Brackets (28, 28A; 128) of bearings are installed in receiving pocket (40; 140) with possibility of being replaced. Brackets (28, 28A) of bearings in receiving pocket (40) are protected against unfixturing by means of a hinged cover (35). Upper bracket (128) of bearing is equipped with guides (173) for retractable fixtures (190). Above receiving pocket (140) there installed are retaining units (166) with fixing seats (165) facing each other, and retractable fixtures (190) have fixing projections (198) which are locked in fixing seats (165) to protect upper bracket (128) in receiving pocket (140) against unfixturing. Guide includes pair of retractable fixtures (190); at that, each retractable fixture (190) has U shape with base (191) and three elbows of which one extreme elbow (193) and intermediate elbow (194) on outer sides facing each other are equipped with guide planks (195, 196) to be installed in guides (173) with form closure, and the second extreme elbow (192) has passage opening (199) for locking bolt. At the bottom of receiving pocket (14) there located is lower seat (155) for roller axis (129), and is mainly made in lead-in unit (125) as a part of it or rigidly attached to it. Guide includes several pressure rollers pressed or to be pressed to chain (11) and located one after the other in chain movement direction. Pressure roller (22) is pressed to chain under action at least of one elastic element. Pressure roller (22) is pressed to the chain under action at least of one shock absorber.

EFFECT: improved wear resistance of the chain.

12 cl, 7 dwg

FIELD: mining.

SUBSTANCE: proposed section of tear-off planer comprises guide element arranged on the side of mined-out space from haulage chute and return travel conveyor chute, upper channel for haulage chain and lower channel for haulage chain, and guide slot, open towards breakage face, for engagement of under-conveyor plate of tear-off planer. Note here that said guide element can carry at least one cover element to stop inspection hole for both haulage chain channels that comprises connecting cantilever for hydraulic cylinder to control conveyor unit inclination and receiving bins for heads of boltless joint between conveyor chutes in rigid joints of adjacent sections of tear-off planer guides. Guide element consists of casting incorporating receiving pans, and/or return travel conveyor chute sections on the side of mined-out space, and/or guide for under-conveyor plate of tear-off planer.

EFFECT: longer life, efficient use.

15 cl, 6 dwg

FIELD: mining.

SUBSTANCE: invention refers to driving facility for sprockets of chain drives, particularly to drive of scraper-chain transporters or chain plane knives for underground mine developments. Drive incorporates the asynchronous electric engine and a gear box. Also the asynchronous electric engine consists of an engine with feeding from a frequency converter, while there is an intermediary two-speed sprocket gear box in the driving block between an engine shaft and the gear box; the intermediary gear box is designed in particular as the front gear box with one starting and one normal stage, when by means of the latter starting effect in the starting stage can be achieved, which is required for starting of loaded scraper-chain conveyer or for free pulling of the chain plane knife.

EFFECT: regulating rotary speed and torque of asynchronous electrical engines.

22 cl, 3 dwg

FIELD: mining.

SUBSTANCE: invention refers to mining, particularly to guide for plough with chain rod. The guide of the plough with chain rod consists of guiding sections which are made complex and designed to be connected between themselves by means of connecting elements providing high tensile strength and angular freedom. Also each guiding section of the plough has middle part with chain guiding channels arranged one above the other; corresponding end part is welded to each side of the middle part; this end part is made out of integral cast item with assembled one above the other sections of chain channels separated with cast-on antifriction distance element. The end sections are equipped with cast-on opened from the side of mining face pockets for connecting units which serve as connecting elements. Each end section has predominantly closed circular upper section of the chain channel where an upper section of the chain channel has conjugating projection at one of the two side parts, while an upper section of the chain channel of the other end section has responding indent.

EFFECT: increased service life of plough guide and economy of fabrication.

18 cl, 8 dwg

FIELD: guiding devices for chain in mining machine, in particular, in mining drawknife.

SUBSTANCE: guiding device for chain is mounted in one of its chain channels for loading or blank branch in area of transition to driving block or rotary mechanism. Device has receiving pocket open towards driving chain and hold-down tool. Pocket is limited at end by hinged finger positioned across chain movement direction. Hold-down tool on one end is provided with base element for finger, synchronized with hinged finger, open on one side, and also with holding element. Hold-down tool has on its lower side a holding surface, adjoining driving chain in state of hold-down setup in receiving pocket and of holding.

EFFECT: shorter time needed for repairs.

14 cl, 3 dwg

The invention relates to the mining industry, mainly for stoping coal complexes with mehrabani and plows

The invention relates to mining

FIELD: guiding devices for chain in mining machine, in particular, in mining drawknife.

SUBSTANCE: guiding device for chain is mounted in one of its chain channels for loading or blank branch in area of transition to driving block or rotary mechanism. Device has receiving pocket open towards driving chain and hold-down tool. Pocket is limited at end by hinged finger positioned across chain movement direction. Hold-down tool on one end is provided with base element for finger, synchronized with hinged finger, open on one side, and also with holding element. Hold-down tool has on its lower side a holding surface, adjoining driving chain in state of hold-down setup in receiving pocket and of holding.

EFFECT: shorter time needed for repairs.

14 cl, 3 dwg

FIELD: mining.

SUBSTANCE: invention refers to mining, particularly to guide for plough with chain rod. The guide of the plough with chain rod consists of guiding sections which are made complex and designed to be connected between themselves by means of connecting elements providing high tensile strength and angular freedom. Also each guiding section of the plough has middle part with chain guiding channels arranged one above the other; corresponding end part is welded to each side of the middle part; this end part is made out of integral cast item with assembled one above the other sections of chain channels separated with cast-on antifriction distance element. The end sections are equipped with cast-on opened from the side of mining face pockets for connecting units which serve as connecting elements. Each end section has predominantly closed circular upper section of the chain channel where an upper section of the chain channel has conjugating projection at one of the two side parts, while an upper section of the chain channel of the other end section has responding indent.

EFFECT: increased service life of plough guide and economy of fabrication.

18 cl, 8 dwg

FIELD: mining.

SUBSTANCE: invention refers to driving facility for sprockets of chain drives, particularly to drive of scraper-chain transporters or chain plane knives for underground mine developments. Drive incorporates the asynchronous electric engine and a gear box. Also the asynchronous electric engine consists of an engine with feeding from a frequency converter, while there is an intermediary two-speed sprocket gear box in the driving block between an engine shaft and the gear box; the intermediary gear box is designed in particular as the front gear box with one starting and one normal stage, when by means of the latter starting effect in the starting stage can be achieved, which is required for starting of loaded scraper-chain conveyer or for free pulling of the chain plane knife.

EFFECT: regulating rotary speed and torque of asynchronous electrical engines.

22 cl, 3 dwg

FIELD: mining.

SUBSTANCE: proposed section of tear-off planer comprises guide element arranged on the side of mined-out space from haulage chute and return travel conveyor chute, upper channel for haulage chain and lower channel for haulage chain, and guide slot, open towards breakage face, for engagement of under-conveyor plate of tear-off planer. Note here that said guide element can carry at least one cover element to stop inspection hole for both haulage chain channels that comprises connecting cantilever for hydraulic cylinder to control conveyor unit inclination and receiving bins for heads of boltless joint between conveyor chutes in rigid joints of adjacent sections of tear-off planer guides. Guide element consists of casting incorporating receiving pans, and/or return travel conveyor chute sections on the side of mined-out space, and/or guide for under-conveyor plate of tear-off planer.

EFFECT: longer life, efficient use.

15 cl, 6 dwg

FIELD: mining.

SUBSTANCE: guide for pulling chain of mining machine, namely for chain of plough on mining plough with drive stations and/or rotary sprockets of pulling chain (11), which are installed in end sections of mining machine, and at least with one element (21; 121) of the guide for chain, which are spatially located near chain sprockets (18) on drive station and/or turning station and pressed across chain movement direction to its load and/or empty branch. Element (21; 121) of chain guide includes at least one pressure roller (22; 122) pressed to links (33) of pulling chain (11); at that, pressure roller (22; 122) is installed on roller axis (29; 129) with possibility of rotation and replacement together with it. Axis (29; 129) of pressure roller (22; 122) rests on brackets (28, 28A; 128) of bearings, which are installed in receiving pocket (40; 140); besides, brackets (128) of bearings in receiving pocket (140) are protected against unfixturing at least by means of one retractable fixture (190). Pressure roller (22; 122) has bearing race (23) matched with enveloping surface (34) determined with links (33) of the chain. Pressure roller (22; 122) is arranged in lead-in unit (25; 125) installed in inlet section (19) of drive station and/or turning station (17) with possibility of being replaced. Brackets (28, 28A; 128) of bearings are installed in receiving pocket (40; 140) with possibility of being replaced. Brackets (28, 28A) of bearings in receiving pocket (40) are protected against unfixturing by means of a hinged cover (35). Upper bracket (128) of bearing is equipped with guides (173) for retractable fixtures (190). Above receiving pocket (140) there installed are retaining units (166) with fixing seats (165) facing each other, and retractable fixtures (190) have fixing projections (198) which are locked in fixing seats (165) to protect upper bracket (128) in receiving pocket (140) against unfixturing. Guide includes pair of retractable fixtures (190); at that, each retractable fixture (190) has U shape with base (191) and three elbows of which one extreme elbow (193) and intermediate elbow (194) on outer sides facing each other are equipped with guide planks (195, 196) to be installed in guides (173) with form closure, and the second extreme elbow (192) has passage opening (199) for locking bolt. At the bottom of receiving pocket (14) there located is lower seat (155) for roller axis (129), and is mainly made in lead-in unit (125) as a part of it or rigidly attached to it. Guide includes several pressure rollers pressed or to be pressed to chain (11) and located one after the other in chain movement direction. Pressure roller (22) is pressed to chain under action at least of one elastic element. Pressure roller (22) is pressed to the chain under action at least of one shock absorber.

EFFECT: improved wear resistance of the chain.

12 cl, 7 dwg

FIELD: mining.

SUBSTANCE: invention refers to mining industry, and namely to towing trolley for underground mining drawknife. Towing trolley for underground mining drawknife includes a towing trolley body inserted in the drawknife body cavity, which is provided on rear side of the cavity guide with a connection element to fix the drawknife chain, and on front side of the cavity guide - with front part, the ends of which indicate the movement direction and form thrust surfaces to interact with counter-thrust surfaces in the drawknife body cavity; at that, a damping device is integrated into the front part of towing trolley and acts with damping in both movement directions. Connection element is movable relative to thrust surfaces with overcoming of back force of damping system of damping device, which is located between thrust surfaces. The provision is made for a receiving body that is rigidly connected to the connection element to receive the damping system. Thrust surfaces form ends of movable bushing, in inner space of which the receiving body is located in movable manner; at that, inner sides of thrust surfaces preferably form thrusts for relative movement between movable bushing and receiving body.

EFFECT: increasing the device efficiency.

16 cl, 12 dwg

FIELD: process engineering.

SUBSTANCE: set of inventions relates to cutters to be attached to grader body element and to underground extraction graders, particularly, to development of steeply inclined coal seams. Grader comprises body with means to guide it in its guides, cutters with multiples seats for individual cutters. Grader comprises split body with two main elements and body mid element to be fitted between said main elements and tool plate attached to grader body mid element. Tool plate front has recesses for fixation of cutter seats while its rear has slitted recess for rigid connection of fixation ledge made at grader body mid element. Tool plate rear part front end has longer top part and shorter locking part with slitted recess made there between.

EFFECT: reliable attachment of cutters, optimized development of minerals.

16 cl, 9 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to mining, particularly to coal of minerals ploughing at inclined strata, particularly, of steep deposits. Ploughing plant comprises plough, at least on pull chain to displace plough over coal work face and guide mechanism arranged along coal work face by means of sliding guide runners. Said plough has split ploughing body with two main elements. Ploughing body main element is provided with retainer for separate pull chain and one or several guide sliding runners. Guide mechanism has two guide plates spaced apart by, in fact, identical distance to coal work face over which plough body is driven with help of their guide sliding runners.

EFFECT: working of coal seams with higher safety.

30 cl, 11 dwg

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