SUBSTANCE: pan section comprises a lower branch and an upper branch to guide master elements of a conveyor chain. Besides, this section comprises a welded frame structure, having two sides, which comprise solid rolled bars. Bars have a permanent shape with a lower shelf and an upper shelf, which stretch at the angle outside in the assembled condition, and a link having a bend for maintenance and welding, at least one intermediate board. A base is provided, connected with the lower shelf of rolled bars for connection of both lower shelves with each other at the distance from the intermediate board. This base has mount components arranged at the ends under lower shelves for facilities of transverse forces transfer.
EFFECT: improved pan for operation in mining combine works.
22 cl, 7 dwg
The present invention relates to the section of the pan for the combined conveyor-mining units designed in particular for underground mining, containing the lower branch and an upper branch for directing the leading elements of the conveyor chain, and this section contains a welded frame structure having two sides, which consist of one-piece laminated profiles, located in mirroring and having a constant profile shape from one end to the other, and the shape of the profile contains the bottom shelf and the top shelf, which are angled outwardly in the assembled state, and rising jumper that connects the bottom shelf and the top shelf and which is provided with a bend, which is formed inside at least one step for maintenance and welding, at least one intermediate plate, which add rigidity to the laminated profiles in the frame construction, and installation socket for detachable means for connecting the sections of the pan, welded from the outside to laminated profile between the top shelf and the bottom shelf near both ends.
In installations for underground mining, such as those used in underground mining operations, use the scraper chain conveyors having large dimensions and consisting of individual clubs the pan, which are connected to each other so that are resistant to tension on the terminal side. Adjacent section of a trough attached to each other, are connected, in particular, through the crank-arm sockets and cranked levers as means for connecting the sections of the pan, which provide some angular mobility of the adjacent sections of the pan horizontally and vertically, so that the scraper chain conveyor can compensate for the uneven ground on the reservoir, and can move, promoting the slaughter. If sections of the pan used for long conveyers, then they supply the snap on the dam side and/or on the downhole side for directions, for example, a mine plow or Shearer Shearer, and have a connecting brackets for promoting gradely, reinforced buttresses to face support. In view of the productivity of the mining machines and increasing the lengths of the faces of up to 450 m, which similarly increases the performance of the transport, which is carried conveyors, modern face and gate conveyors must have a capacity equal to at least 2000 tons per hour (t/h) and even 5000 t/h in the case of high performance conveyors. With growing bandwidth wear separate sections for pan inevitably increases, and the market there is a need to re is takach conveyors, high-capacity and long service life at the lowest possible production costs and low overall weight of individual sections of the pan.
Modern face and gate conveyors for underground mining can be divided into three groups according to the construction of the sections of the pan. The first group includes conveyors, with fully molded section of the pan. The advantage of such cast structures is the high reproducibility, high load capacity with regard to uniform design and low exposure to Assembly errors. Disadvantages are the high costs of the materials, the fact that some areas cannot easily be designed for high load or greater service life, and the fact that there is no possibility of replacement of wearing parts.
The second group forms a "hybrid pans", which consist of cast parts, on the one hand, and laminated parts, on the other hand. Such a hybrid pan shown, for example, in European patent No. 525926 B1. For hybrid pans require only a small number of welds, as, for example, the entire sidewall including a side profile for directions scrapers in the branches of the conveyor and crank-lever slot as the means for connecting the sections of the pan may be proector the whole van, while the bottom of the pipeline as one of the very busiest parts welded to cast to the side. In addition, it is known that in the case of hybrid pans can consistently carry out the welding on the means of connection of the sections of the pan and other mounting means to move the conveyor or direction of the mining machine (German patent 39 05 324 A1).
The third group of sections of a trough entire or more or less entirely consists of welded construction, and the invention is based on this design, which is known from European patent 1362805 B1 and in which at least the sidewalls consist of laminated profiles with the profile shape, asymmetric in height and has a curve with a step between the bottom shelf and top shelf, and this bend is welded intermediate plate, essentially rigidly connecting the laminated profiles. The presence of bending leads to the most preferred form of the profile, enabling easier to weld it to the functional components and equipment, and reduces the number of necessary stages of Assembly for the manufacture of sections of the pan as a welded structure. Frame construction given the rigidity in its center. In the above-mentioned patent States that the overlapping sections of the pan with the alignment slots of the cranked levers on one section of a trough and providing drainage layout installation GN the section to another section of the trough is designed to protect laminated profiles and the lower part of the conveyor or intermediate bottoms from fatigue fractures.
The purpose of this invention is to create a section of a trough, which provides all the advantages of welded structures and, in particular, suitable for use in mining operations combine to develop a reservoir having a working thickness of preferably more than 5 meters
This goal is achieved through a section of a trough of the type in question due to the fact that provided by the base, which is connected with the lower shelf laminated profiles, connects the two lower shelves each other at a distance from the intermediate plate and has a mounting part located on the ends under the bottom shelves for the transfer of shear forces. Since the development of reservoirs, working thickness exceeding 5 m, use the Shearer, own weight which can exceed 120 tons, a separate section of the trough is subjected to significant forces during operation, and these forces can lead to increased wear, in particular, in the intermediate plate and the bottom of the upper branch of the conveyor and also in the elements of the bottom of the lower branches, taking into account the relative movements of adjacent sections of the pan. Due to the invention of the layout of the funds transfer shear forces at the base under the bottom shelves, forces arising in operation across the direction of transport, to send h is the distance from the base of the conveyor, and thanks to the positioning of these tools below laminated profiles in the base, also eliminated restrictions on the funds transfer shear forces. This base provides additional stiffening of the two laminated profiles relative to each other, so that the main components of each section of the pan, namely, sides, consisting of laminated profiles can also support each other a greater distance than usual heretofore, resulting in using a broader, and perhaps more profound the leading elements that can, in turn, improve the performance of conveyor designed with sections of a trough in accordance with the invention.
In the most preferred configuration, the means of transmitting transverse forces consist of holes and pins that interact in the assembled state, and some of them can be installed with the possibility of removal inwards other at the ends of the ends of the sections of the pan. In the manufacture and Assembly of the most profitable, if the installation details on one end section of the pan have only nageli, and installation details on the other end section of the pan only have openings for insertion into the engagement of the pins of the other sections of the pan. Each installation item in one section of the pan is mostly only one Nagel, and SV is related installation detail in another section of the pan has only one hole for the dowel, so in the appropriate section of the pan conveyor in each case below both laminated profiles provides the speaker Nagel or a hole for insertion of the dowel engages. Therefore, each rolled profile or each side given the appropriate means of transferring shear forces, and, consequently, at each end section of the pan there are two means of transmitting transverse forces.
To simplify manufacture, the pins can consist, in particular, of the pins that have the body of the pin, which can still be welded in the opening or hole in the installation details, and the head of a pin protruding on the end outside the installation details in the assembled state. Therefore, in this configuration, all the installation parts may consist of identically designed base element having a hole, and some of the installation parts supplied with welded pin as Nagel to provide the same basic item covered part and the covering part and as a means of transmission of transverse forces. Because adjacent section of a trough in the operation must have an angular mobility relative to each other, the head of the pin in this configuration, it is possible to provide a crown-side surface, and/or the body of the pin can be performed by moving the to them through the district narrowing in the head of a pin. Crown lateral surface provides sufficient angular mobility and ensures small force of pressure in the contact area between the hole and the head of a pin. This design provides the necessary clearance space, if adjacent section of the pan rest against each other with minimal gap and are arranged at an angle to each other. Circumferential narrowing it provides sufficient required for movement clearance for the tilt both vertically and horizontally, i.e. in the horizontal direction. Installation parts for use with pegs can be composed mainly of narrow strips or blocks having a hole open on the rear side of the installation details, so you can mount the pins in the holes by means of a welded joint on the rear side of the installation details. Therefore, the covering part and covered part of the funds transfer shear forces differ from each other only in the sense that the pin is inserted or not inserted as the dowel in the hole.
In the simplest configuration, installation details can consist of a machined block with cutouts, but can also consist of forged parts or cast parts. To optimize the total weight of the sections of the pan, it is preferable to have two separate installation details on the each end of the section of the pan, in this four mounting part is preferably connected via a single bottom plate having sufficient thickness of the plate. Then the bottom plate adds rigidity to the installation details for the education Foundation, resistant to bending, resulting, in turn, optionally attached to the rigidity of the frame structure laminated profiles and the intermediate plate. In order to simplify Assembly and improve the connection, the bottom plate can in this case provide marginal cutouts for pre-positioning and fastening of the installation details. In accordance with a particularly preferred configuration, the bottom plate is in the form of strip out, at measures for the bottom shelf of one of the two rolled sections, forming the path of the mining machine, in particular, the mining of the harvester, and this strip plate is front laminated profile. Because the path of the machine as a whole is formed on the bottom plate, it is possible to do without additional weld, this increases the bending resistance of the section of the pan. In addition, the bottom plate in the preferred embodiment, can also be used for the bottom shelf opposite laminated profile in the form of continuous strips or sections of the strip for attaching fasteners, such as mounting brackets for promoting gradilla, stiffening p is it the supporting rack structure excavation harvester, plates, protects against spill, etc. During the operation of the path of the machine is usually directed to the extracted minerals on the face side, while the fastening elements are located on the dam side.
To minimize the thickness of the plate, inherent to the bottom plates, the most beneficial to perform ribs as a single unit with the bottom plate or welded to it. In this case, the ribs may be held in the transverse and longitudinal directions, and may overlap to achieve the lowest possible weight of the material of the bottom plate and the reinforcing ribs optimum resistance to bending of the base, giving essentially along the entire depth of the section of the pan.
In accordance with the most preferred configuration of the installation details are on its upper side a groove made as a unit with them, which is for placing the bottom shelf welded to it. In this configuration, the installation parts consist of at least cast parts having a groove made with them as a whole. In this case, it is possible not only to provide the bottom shelf of a small lateral support through the walls of the groove, but also to perform a groove on the upper side of the installation parts guarantee the overlay weld between the bottom shelf and mounting detail a few of the or the distance over by machines. Facing outwards the outer surface of the sides of the groove, in particular, may have some curvature and the depth of the groove is preferably greater than the thickness of the bottom shelf so that the bottom shelf and secure the weld held in the recessed position and secured within the groove with the sides of the groove. Installation details are preferably on both sides of the bottom shelves laminated profiles, allowing the preferred support laminated profiles, forming a sidewall on the reservoir. Installation details on the upper side of the section, passing inside, can have a mounting bevel for bearing bars in order to give vertical support to the leading elements of the conveyor chain in the lower branches. In particular, the carrier strip may consist of narrow strips of sheet metal, which are located at an acute angle to the intermediate plate in the assembled state and are supported by the leading elements, returning to the lower branches. Then, the bottom plate may form the basis for the lower branches, and bearing strip as items that come into contact with the leading elements in the lower branches, if necessary, can be replaced. Particularly advantageous if the funds transfer shear forces are located below the mounting bevels and such that they can be moved inward relative to the lower shelves. Because of this, funds transfer shear forces are else inside, than the connection sections of the pan to accommodate crank levers and the like, by means of which the sections of the pan, placed one after the other, in a way that allows them to withstand the tension.
Jumper laminated profiles can have, in particular, the upper portion of the lintel above the bend and the lower portion of jumpers, shifted inward relative to the upper section of the bridge, below the bend, and the lower portion of the jumper laminated profile below steps can form its inner side, at least partially, the side walls of the lower branches and/or the upper portion of the lintel above steps and bending limits its inner side receiver for intermediate chute as the upper branches. The use of the intermediate chute as the upper branch provides the advantage that you can replace the intermediate chute, which is normally subjected to the greatest loads and faster just wears out, and the remaining section of the pan can be used again. As in the known technical solutions of the type in question, an intermediate chute can be mounted by only welded connections, or even with the help of other connective means.
In the sections of the trough corresponding to the invention, the bottom plot is the drain jumpers preferably can be carried out at some acute angle to the outside. This configuration can ensure that neither the upper portion of the jumper or the lower portion of the jumper does not come into contact with the leading elements during operation. In this case, the laminated profiles can perform a simple function of imparting rigidity to the sidewalls and to provide a means for connection of additional equipment. In addition, laminated profile in the area of the bend can be provided with an accumulation of material, the amplifying step, and/or may have the smallest wall thickness directly above the bend, resulting in a profile shape inherent in laminated profiles, adapts to existing loads.
The profile shape inherent in laminated profiles, preferably chosen so that the lower shelf and the upper shelf are vertically offset one above the other and terminate at the ends of the shelves, aimed at an angle upward, approximately on the same vertical line. For the preferred application of the section of a trough corresponding to the invention, when excavation operations harvesters can provide lateral plate, which is mounted on the goaf side and which are mounted holders Reiki mining combine, and/or which are mounted plates, protects against spill, to the side elevation of the upper branch on the dam side.
Additional advantages and is configuratie section of a trough in accordance with the invention follow from the following description of the preferred possible way of implementation, illustrated by drawings showing the following:
in Fig. 1 shows a partially truncated side view section of a trough in accordance with the invention;
in Fig. 2 shows a perspective view of the bottom section of the pan according to Fig. 1;
in Fig. 3 shows a frame construction section of a trough in accordance with the invention without reason;
in Fig. 4 shows a perspective view of the base section of the pan without the installation details in accordance with the invention;
in Fig. 5 shows a side view of one half of the design according to Fig. 3;
in Fig. 6 shows a perspective view of the installation details for the partition of a trough in accordance with the invention;
in Fig. 7 shows a detailed cross section of the two sections of the pan connected with each other and having means of transmitting transverse forces introduced into engagement with each other.
In Fig. 1 and 2 shows a section 20 of a trough in accordance with the invention, intended for the combined conveyor-mining unit for underground mining, particularly coal mining. Section 10 of the pan has a welded frame structure 1, which limits the lower branch 3 and the upper branch of the conveyor 4 of the unit by means of two sidewalls, consisting of laminated profiles 2. The conveyor may be formed using a variety of identically constructed sections of the pan, connecting is held with each other by means of 70 connect the sections of the pan, and the leading elements (not shown), such as scrapers scraper chain (not shown)that circulate in the lower branches 3 and the upper branch 4 of the above-mentioned conveyor for transporting coal and other materials from the bottom. The upper branch 4 section 10 forms a branch conveyor, in which a material, preferably such as coal, mined by the mining unit (not shown) is ejected from the slaughter and transported to the collecting conveyor. The lower branch 3 serves as a return branch for the scraper chain, and return branch material is transported, which is in itself known specialist underground conveyor-mining units.
In the illustrated possible embodiment, section 10 of the pan is designed for use in the operation of the mining of the harvester and has the path 5 of the machine for directing the excavation of the combine (not shown) on the working face side, i.e. on the right side of Fig. 1 and 2, and the connecting arms 6 for Reiki (which is not shown here) on the goaf side of the lower branches 3 and the upper branch 4. Section 10 of the pan in accordance with the invention is intended for use in the operation of the mining of the harvester, in which Shearer loaders can simultaneously driving the entire layer thickness of more than 5 m during every what about the flight. Accordingly, the scraper chain in the upper branch 4 must also be able to remove the material produced by this thickness. The Shearer for layers of such thickness can have its own weight over 120 tons, and for this reason, section 10 of the trough is made with the possibility of reliable amortization of such scales and constructed in accordance with the invention.
The main structural element of the section 10 of the trough formed by the side walls, consisting of laminated profiles 2, arranged as mirror images of each other and rigidly connected with each other in such a way that resist bending from one side at the expense of the intermediate plate 7, and on the other hand due to the base 20. Laminated profiles 2, forming a sidewall essentially have the structure described in European patent 1362805 B1, entered into this description by reference. Below with reference to Fig. 5 is illustrated profile shape laminated profiles 2. Laminated profiles 2 have a profile shape that is asymmetric in height, but constant along the length of the section 10 of the pan. Each laminated profile 2 has a profile shape, with the bottom shelf 11 and the upper shelf 12, and each of them in the assembled state passes outwards at an angle relative to the lower branches 3 and the upper branch 4, respectively, and between which vertically, if you look at the entire con is tructio in General, is the jumper 13. By curve 14, which is located approximately in the center and is made as a single unit with shelves during rolling, the crosspiece 13 is divided into the upper, passing vertically plot 5 jumpers on the flexure 14 and the lower portion 16 of the jumper, which is illustrated in a possible embodiment, laminated profile 2 in accordance with the invention passes outwards and downwards, starting from the bend 14, at an acute angle, which in this case is approximately 15 degrees relative to the vertical. In turn, each of the lower shelves 11, performed on the lower section 16 jumpers as a whole with it and an angled outward, and the upper shelf 12, performed on the upper section 15 of the jumper as a whole with it and an angled outwards, in turn, is held at an angle of approximately 90 degrees to the vertical, i.e. essentially horizontally in this case. The size of the bend 14 and the size of the acute angle of the lower section 16 jumper selected so that in the assembled condition, the lower shelf 11 and the upper shelf 12, in principle, have the same length, passing one above the other, and terminate in the same vertical planes. The bend 14 forms an accumulation of material on the upper side of which is made from step 17, on which is located intermediate plate and to the second, this intermediate plate is welded by a longitudinal weld seam, which can also be performed mechanically. As shown in Fig. 1, sidewall located opposite each other in mirror image, essentially rigidly connected to each other by an intermediate plate 7, to give the frame structure 1 is sufficient rigidity in the Central plane. Therefore, the main elements of the frame structure 1 is composed mainly of only three elements, namely two laminated profiles 2 and intermediate plate 7, which can be connected to each other by two longitudinal welds.
As most clearly shown in Fig. 3 and 5, corresponding to narrow the installation part 30 in the form of a block, preferably consisting of a cast part that is welded to the ends of each section of the pan below the bottom shelf 11, and the installation part 30 is held up on both sides of the bottom shelf 11 and supports the bottom shelf 11, and thus the laminated profile 2. In Fig. 6 shows more detail installation detail 3 for use in sections of the pan in accordance with the invention. To get a better weld connection between the bottom shelf 11 and mounting parts 30, mounting parts 30 are on the upper side of the groove 31 32 whose width consistent with the width of the bottom shelf 11. The groove 32, is made in this case as a single unit with the mounting parts 30 during the casting, has an outer side 33, kotoryeprodayut above, than bottom shelf 11, and has an outside curvature 34. Weld for stationary welding the bottom shelf 11 in the groove 32 can be performed on the inner side 35 of the outer side 33 of the groove, in this case, going vertically, and therefore is in an area that is protected against external sites installation parts 30. The second weld for attaching the bottom shelf 11 to the mounting parts 30 can be performed on the transition of the inner side 36 of the groove, the inner side of which is at a slight angle in accordance with the inclination of the bottom portion 16 of the bridge, and then goes into running at an acute angle, and facing outwards mounting bevel 37 on the mounting part 30.
In the illustrated possible embodiment, all four mounting part 30, as shown in Fig. 3, consist of identical blocks, and each of these installation parts 30 provided with a continuous round hole 38, closed at the periphery. The holes 38 in the installation details 30 serve as, or to provide means for the transmission of transverse forces, and with these tools you can also transmit large forces across the direction of transport between adjacent sections of the pan in a mining installation.
Means of transmitting transverse forces formed mounting parts 30, contain with one hand covering cha is th having a hole 38 in the mounting parts 30 and on the other hand covered part with a partially protruding Nagel 40. As shown by Fig. 1, 2 and 3, the mounting parts 30, supplied by Nagel 40 (covered in part), are located on one side of the section 10 of the pan, while the installation part 30 having only a hole 30 (covering part), is located at the rear end (Fig. 3). Alternating the location of the installation parts 30 as covering part or covered part under the bottom shelf shown in Fig. 1-3. In the assembled state of two adjacent sections 10 pan Nagel 40 (covered in part) on one installation part 30 and the hole 38 (covering part) to another installation details the following section 10 of the pan now are in engagement one within the other, as shown in Fig. 7. Resulting from lateral forces, which arise, in particular, when passing by Shearer loaders, you can pass through pins 40, and it is possible to prevent the relative movement, of course blocking them. The pins 40 are solid pins 41 having a cylindrical body 42 of the pin and the head 43 of the pin. The diameter of the body 42 of the pin adapted for insertion through interference fit in the hole 38 in the mounting part 30. Because the hole 38 is made as a through hole, the body 42 stefanone reliably fixed in one kit installation parts 30 on the rear side 39 of the installation details by means of a weld (not shown here). The body 42 of the pin has essentially the same length as the depth of the mounting parts 30. On the other hand, the head 43 of the pin is shorter and in this case has a length, which is only 60% of the length of the body 42 of the pin. So it is approximately less than 2/3 into the hole 38 in the following installation parts 30. As easily seen in Fig. 7, the head 43 of the pin has a crown side surface 44, which falls on the cone in the axial direction of the pin 41 to the free end 45 of the head of a pin. Between the body 42 of the pin and the head 43 of the pin formed by the constriction 46, which ensures proper angular mobility precisely in the area of emphasis between the two abutting against each other by partitions 10 of the pan, with the installation part 30, as shown in Fig. 7 can abut each other with minimal clearance. Thanks crown-shaped head 43 of the pin head 43 of the pin can swing in the hole 38 of the mounting parts 30 on the left side of Fig. 7 as in the vertical direction and the horizontal direction, in order to ensure the angular mobility abutting against each other of the sections 10 of the pan sufficiently. At that the head 43 of the pin insertion hole 38 connects two adjacent sections of a trough in the transverse direction, of course providing the mutex, because this dive maximum diameter Bo the new surface 44 of the head of the pin with only a small clearance is sitting in the hole 38.
As shown in Fig. 3 and 5, four mounting parts 30 are welded to the respective ends of the laminated profiles 2 below the lower shelves so that the end face of a laminated profile 2 and the end face 30' of the installation parts 30 end approximately flush. As can be seen in Fig. 3, the head 43 of the pin means of transmission of transverse forces acting at the end of the 30' at one end only section of the pan. On the uppermost an angled mounting bevels 37 installation parts 30 are bearing strip 21 and is welded in place, and the carrier strip 21 form a guide for scrapers, returning to the lower branches 3 and come into contact directly with passing the angle of the rear part of the scraper as the leading elements. Carrier strip 21 in the preferred embodiment, can consist of wear plates wear compensation, which pass through the entire length of the section of the pan and welded, for example, by means of a separate weld the mounting parts 30, to allow replacement during repair or maintenance sections of the pan. Support bearing bars 21 only mounting parts 30 in end zones of each section of the pan may be sufficient, because the lower branches scrapers, resting on the supporting strip 21, must withstand only own the first weight, not conveying the material. In Fig. 5 shows that each of the lower branch 3 is limited by the edges of the carrier strips 21, the intermediate plate 7 and bending the bottom portion 16 of the bridge.
To increase the Flexural resistance of both laminated profiles 2, forming sidewall, the entire frame 1 give additional rigidity with the base 20, which is shown in detail in Fig. 4, although the installation details as an integral part of the base 20 is not shown here. The base 20 includes a solid bottom plate 22, which passes through the entire width and length of the section 10 of the pan, and in the preferred configuration in the assembled state is on both sides for the bottom shelf laminated profiles 2. To lower shelves laminated profiles 2 could carry them or for welding them to these shelves on the bottom plate 22 is placed and attached to two fatty strips 23, and these strips 23, respectively, are approximately centered with respect to the boundary of the cut-outs 24 and 25, which are made on each of the side end edges of the bottom plate 22 and are used for pre-positioning and welding on the installation details 30 in marginal cutouts 24, 25. In the assembled condition of the bottom shelf shall be between the slots position 32 (Fig. 5) installation details 30 directly on the supporting strips 23. The bottom plate 22 is in the form of C is eravnoe strip 22A on the right side in Fig. 4 and in the form of two outer sections 22B on the left side in Fig. 4 outside of the strip 23. Continuous strip 22A forms in section 10 of the pan path 5 of the machine (Fig. 1) on the side of the face and from the bottom to the strip 22A is welded durable scraper beam 26 by means of which the section 10 of the pan rests when operating directly on the "Plast". On the front ends of the section 10 of the pan band 22A is in the form of a narrow blade 22P sideways beyond the right of the recess 24, as shown in Fig. 4, so that a continuous path of the machine, which is only partially formed in the region of the cutouts 24 essentially flat in this case, the top sides 31 of the mounting parts 30 and otherwise formed solely by a strip 22A.
Lots 22V lanes are in operation on the dam side, and it can be welded which add rigidity to the plate or transverse ribs 19, to allow mounting, for example, the side plate 51 to the frame 1, as shown in Fig. 1 and 2, and to the top of the side plate 51 can be mounted with brackets for rack excavation of the harvester, and on this plate in the preferred embodiment, screw in place connected to the plate 52, protects against spill and rising up, as auxiliary equipment. In the illustrated possible embodiment, the rear side is a plate 52 attached to the frame 53 of the flexible cable with the aim of pulling the power cable for coal mining combine.
The upper branch 3, in which the mined material is removed by a conveyor chain, preferably consists of interchangeable trough 60 which can be inserted in frame 1 interchangeably and may be secured therein by any of threaded connections, clamping connections or welded connections. In accordance with the technology, which in itself known, interchangeable trough 60 has a bottom 61 of the conveyor and two lateral profile 62 which are welded to the bottom 61 of the conveyor and the inner profile of which is adapted to the configuration of the leading elements of the scraper chain. Providing interchangeable trough 60 in a known manner ensures that the lifetime of section 10 of the pan can again extend by replacing interchangeable gutters.
To the outer sides of the laminated profiles 2 near the ends and in this case, essentially flush with the end surfaces of the installation parts attached, in particular welded, the crank-lever slot 71, and these crank-arm sockets 71 can be inserted cranked levers (not shown)to be secured using a crank-arm sockets 71 and crank levers, means connecting the sections of the pan, which can be fastened adjacent section of the pan so that they will be able to withstand the tension. Crank-lever slot 71 before occhialino inserted in a consistent manner between the bottom shelf 11 and the upper shelf 12, and rest against the outer side of the jumper 13, as shown in Fig. 5.
In the illustrated possible embodiment, the base 20 includes a lower plate 22, a continuous width for extra rigidity both laminated profiles 2, but also a ribbed structure with ribs 27 28 rigidity under the bottom plate 22, which run in the radial direction from the Central fatty ring 29 in the center of the bottom plate 22 to the edges and ends of the bottom plate 22 to give the bottom plate 22 as a greater resistance to bending in all directions. To give the Foundation stiffness by using additional longitudinal or transverse struts. As the bottom plate under the ribbed base can be welded additional bottom plate 90. In the ribbed structure 27 can be positioned in space, which is very much closed.
In an assembled condition, the end edges of the bearing bars 21, as can be seen again in Fig. 7, rest nearly flush with each other. The intermediate bottom 7 of two adjacent sections of the pan, in any case are shown in the clipping plane, also abuts flush with each other. The bottom 61 of the conveyor interchangeable gutters can be a little play in the same plane and can be installed on the rear side or the other, so also is to provide some overlap in this case, which prevents the passage of stuff on them resting on the edges between the two sections of the pan.
To a person skilled in the art will understand that the foregoing descriptions derive numerous modifications within the scope of protection of the claims of the patent. Depending on the desired profile dimensions funds transfer shear forces may be different. The use of identical fasteners has economic advantages. Installation details, in principle, can also consist of blocks or narrow strips or forged parts, although to create a groove and additional support lower shelves preferred molded part.
1. Section of a trough for the combined conveyor-mining units designed in particular for underground mining and containing the lower branch (3) and the upper branch (4) for guiding the leading elements of the conveyor chain containing welded frame structure (1)having two sides, consisting of a one-piece laminated profiles (2), arranged in mirror image and having a permanent shape from one end to the other, and the shape of the profile contains the bottom shelf (11) and top shelf (12), an angled outwards in the assembled state, and rising jumper (13)connecting the bottom shelf (11) and top shelf (12) and having a bend (14)where IsNot is formed, at least one step for maintenance and welding, at least one intermediate plate (7), increasing the rigidity of the laminated profiles (2) in the frame construction, installation socket (71) means for detachable connection section of the pan, welded from the outside to laminated profile (2) between the upper shelf (12) and bottom shelf (11) near both ends, characterized in that it comprises a base (20), coupled with lower shelf (11) laminated profiles (2)connecting the two lower shelves (11) each with each other at a distance from the intermediate plate (7) and having a mounting part (30)located on the ends under the bottom shelves (11) for the transfer of shear forces.
2. Section of a trough according to claim 1, characterized in that the means of transmitting transverse forces consist of holes (38) and pins (40).
3. Section of a trough according to claim 2, characterized in that the installation of the part (30) on one end section of the pan only have the pins and the installation of the part (30) on the other end section of the pan only have openings for insertion into the engagement of the pins of the other sections of the pan.
4. Section of a trough according to claim 2 or 3, characterized in that the pins (40) consist of pins (41), which have a body (42) of the pin, which can still be welded in the hole (38) in the installation of the part (30)and the cylinder (43) of the pin protruding beyond the installation detail is th (30) in the assembled state and is preferably provided with a crown-side surface (44), and/or body (42) of the pin passes through the district narrowing (46) in the cylinder (43) pin.
5. Section of a trough according to claim 2 or 3, characterized in that the installation of the part (30) consist of narrow strips or blocks having a hole (38), open at the rear side of the installation details, and the pins (40) is fastened in the holes (38) by means of a welded joint made with the rear side of the installation parts (30).
6. Section of a trough according to claim 1, characterized in that it contains two installation parts (30)located at each end section of the pan, and four mounting parts are connected through the bottom plate (22).
7. Section of a trough according to claim 6, characterized in that the bottom plate (22) is provided with a marginal cut-outs (24, 25) for pre-positioning and fastening of the installation parts (30).
8. Section of a trough according to claim 6 or 7, characterized in that the bottom plate (22) is in the form of a strip (22A) out for the bottom shelf (11) one of the two rolled sections and forms the path of the machine with the help of protruding strips (22A).
9. Section of a trough of claim 8, wherein the bottom plate (22) stands for the bottom shelf opposite laminated profile in the form of continuous strips or plots (22V) strips for fastening the fastening elements.
10. Section of a trough according to claim 6, characterized in that it contains an edge (28) hardness, made as a who e unit with a bottom plate (22) or preferably welded thereto.
11. Section of a trough according to claim 1, characterized in that the installation of the part (30) has at its upper side a groove (32), is made as a unit with them and aimed for the bottom shelf (11), which is welded to it.
12. Section of a trough according to claim 11, characterized in that the depth of the groove (32) is greater than the thickness of the bottom shelf (11), and/or the outer wall sides (33) of the groove has a curvature.
13. Section of a trough according to claim 1, characterized in that the installation of the part (30) are on either side of the bottom shelves (11) laminated profiles.
14. Section of a trough according to item 13, wherein the installation part (30) on the upper side of the section, passing inside, have mounting bevel (37) for bearing bars (21) to provide vertical support to the leading elements of the conveyor chain in the lower branches.
15. Section of a trough according to § § 11 and 14, characterized in that the means of transmitting transverse forces are located below the mounting bevels and are able to move inward relative to the lower shelves (11).
16. Section of a trough according to claim 1, characterized in that the clamp (13) has an upper section (15) jumper above the bend (14) and the lower portion (16) jumper, shifted inward relative to the upper section (15) jumper below the curve (14), with the upper section (15) jumper located above steps and shifted, limits its inner side receiver for temporarily the CSOs chute (60) as the upper branches.
17. Section of a trough according to item 16, wherein the lower portion (16) jumper runs at an acute angle to the outside.
18. Section of a trough according to claim 1, characterized in that the laminated profile (2) in the region of the bend (14) is equipped with a cluster of material, the amplifying step or steps, and/or has the smallest wall thickness directly above the bend (14).
19. Section of a trough according to claim 1, characterized in that the bottom shelf (11) and top shelf (12) are vertically offset one above the other and end approximately on the same vertical line.
20. Section of a trough according to claim 1, characterized in that it contains a side plate (51)attached on the dam side attached to holders (6) Reiki excavation of the harvester and/or attached to the plates (52), protects against spill material to the side elevation of the upper branch on the dam side.
21. Section of a trough according to claim 1, characterized in that the installation of the socket (71) welded without overlapping to laminated profiles (2) between the bottom shelf (11) and top shelf (12).
SUBSTANCE: machine comprises a scraper of box type (1), a scraper hoist (2), head (3) and tail (4) traction ropes, diverting blocks (5) for traction ropes, a loading ramp (6). The scraper comprises side walls (7) and a rear wall (8), in its lower part inclined at the angle to the horizon. On the rear inclined wall of the scraper at the angle (10) of fixation of a tail traction rope to the scraper on brackets (11, 12) fixed on the walls a shaft (14) of cylindrical shape is installed with the possibility of rotation on the horizontal axis (13), and its lower edge is arranged with displacement downwards relatively to the lower edge of the rear wall of the scraper and is distanced from it along the horizontal line towards the tail traction rope. Brackets on the rear wall are fixed with the help of a board (15) with the possibility of its displacement in the vertical plane along the wall and fixation on it with the help of fastening elements (16). The shaft axis is installed in horizontally aligned slots (17) of brackets with the possibility of their displacement and fixation.
EFFECT: decreased energy intensity and wear of a device.
SUBSTANCE: method includes successive delivery of containers for transportation of mined rock to loading area, loading of mined rock into containers using loading device and transportation from drifting face. At that as a container for transportation of mined rock transport box is used, transportation of mentioned loaded containers is performed up in the air by monorail mounted in upper zone of drifting face.
EFFECT: improving efficiency and simplifying due to non-use of expensive equipment thus resulting in productivity gain.
7 cl, 2 ex, 3 dwg
FIELD: machine building.
SUBSTANCE: tow hitch is made in the form of rods, eyelets and two mutually perpendicular axles of different diameters, with a smaller diameter axle that passes through a hole in the large-diameter axle for rotation and is connected through the eyelet with a thrust, and the axle of diameter is inserted with a gap into eyelets of a stretcher section of the loading elevator.
EFFECT: free movement of the machine in three directions with respect to the loading elevator, simplified design, reduction of overall size and weight of the loading elevator.
FIELD: machine building.
SUBSTANCE: in disclosed here apron conveyer links of planar chains of intermediate drives are arranged opposite to one another along width of draw member. These links are interconnected with "П"-shaped beams, on upper cross bars of which there are secured straps out of elastic material interacting with external surface of a deck of the planar chain. The planar chains of an upper branch of the pull member are arranged in spans between a driven sprocket and tightener; they interact with supports of sliding or with rollers. Also, cases of bearings of the driven sprocket and tightener and the said supports of the intermediate drive are mounted on the frame; the frame is secured to poles of the conveyer and can be set off in vertical plane relative to them. Magnets are secured on brackets of poles of the conveyer in gaps between pull chains of the planar chain and leaf chains of draw member of the intermediate drive with minimal gaps relative to the deck of the planar chain in the span between the driven sprocket and tightener of the intermediate drive.
EFFECT: increased reliability of operation of apron conveyer with extended length.
5 cl, 3 dwg
SUBSTANCE: in complex based on horizontally closed scraper chain a traction element is arranged as double-chain. Scrapers at side external relative to longitudinal axis of conveyor and at the length of contour equal to length L of the conveyor are arranged with stands perpendicularly aligned to scrapers in the form of beams with equal resistance in mutually perpendicular planes. Detachable cutters are fixed on stands, being aligned aside from conveyor longitudinal axis, besides, height of cutter cutting edges and their location along height from upper plane of scrapers are defined based on mathematical ratios. At the same time total height of cutting edges in all cutters is equal to capacity of mineral bed, and location of scrapers with cutters along conveyor length is accepted as stepped with pitch between cutters l=L/n with increasing height of cutters location on scrapers hi to the side opposite to direction of traction element movement. Besides, height b0 of cutting edge in lower cutter is selected on the condition of providing zone cleaning near bed foundation, and height b1 of cutting edge in the first cutter and height h of its location above upper plane of scraper are selected on the condition of providing strength of unit for fixation of stand with cutter to scraper. All scrapers equipped with cutters, at the side opposite to the cutters are equipped with additional vertically aligned stands of the same height, with the possibility of their interaction with vertical boards of panline both at weight-bearing and idle branches. Surfaces of additional stands at the side of panline boards are coated with a layer of antifriction material.
EFFECT: using scraper chain both as transportation device and a mining device.
FIELD: machine building.
SUBSTANCE: in disclosed here apron conveyer links of leaf chains of intermediate drives are arranged opposite to one another along width of pull member. These links are interconnected with "П"-shaped beams, on upper cross bars of which there are secured straps out of elastic material interacting with external surface of a deck of the leaf chain. The leaf chains of an upper branch of the pull member are arranged in spans between a driven sprocket and tightener; they interact with supports of sliding or with rollers. Also, cases of bearings of the driven sprocket and tightener and the said supports of the intermediate drive are mounted on the frame; the frame is secured to poles of the conveyer and can be set off in vertical plane relative to them.
EFFECT: increased reliability of operation of apron conveyer of extended length.
5 cl, 3 dwg
SUBSTANCE: facility consists of chute and auxiliary belt arranged under load bearing belt; said auxiliary belt has side edges projecting beyond borders of load bearing belt. Side edges of the auxiliary belt rest on horizontal damping rollers-supports at a section of load flow receipt; they rest on tilted re-loading rollers-supports at the section of re-loading. The facility is equipped with a frame with a vibrator; re-loading rollers-supports are rigidly fixed on the frame. By means of flexible elements the frame is installed on poles and can be vertically reinstalled.
EFFECT: reduced length and increased reliability.
2 cl, 4 dwg
SUBSTANCE: invention is related to mining industry, namely to charging devices for belt conveyors, intended for transportation of large-sized materials. Rotary-vane feeder of conveyor comprises drum, which consists of two rims joined to each other by means of radial blades, support rollers and tray, which are installed on frame. Besides support rollers are installed in pairs on balancing levers, which are hingedly joined to frame. Radial blades are equipped with breaking beams, which are arranged over blades and are connected to them by means of elastic elements.
EFFECT: increased reliability and durability due to reduction of contact tensions between rims and rollers and reduction of dynamic impact loads at blades.
SUBSTANCE: invention relates to device and method for travel of mining conveyor section between the first position, co-axial with content of conveyor sections, and the second position of storage, located not endwise the content of conveyor section. Device contains carrier of section and guide, which directs movement of section between the first and the second positions. Additionally device is implemented with ability of connection to manipulation device by composition of conveyor sections so that carrier of section at least partially moves independently of manipulation device. Carrier of section with ability of rotation is connected with guide by means of intermediate pivot pin and allows travel stabiliser. Also it is provided method of travel of mining conveyor section.
EFFECT: effectiveness increase of manipulations by sections of conveyor.
12 cl, 5 dwg
SUBSTANCE: it is intended for simultaneous work with the loading machine, boring plant or with timber-mounting mechanisms having the possibility of being moved along the rigid trough line of drag conveyor by means of chainless supply mechanism when performing mine openings by drill and fire method. Pickup mechanism includes drag conveyor with a rigid line, a wedge nose piece which is mounted on the front part of drag conveyor and which serves for penetrating into the mined rock dump and for protecting the transporting member of conveyor against straight blow when breaking up the work face by explosives, two enclosing shields, support plate located in the front part of drag conveyor, power spacer-feed mechanism and the end spacer mechanism. Support plate is made with the possibility of perpendicular movement and attachment thereof relative to longitudinal axis of drag conveyor by means of two T-shaped guide beams and slots of the rigidly mounted semi-jacket, and longitudinal movements of bottom-hole pickup mechanism are performed by means of power spacer-feed mechanism mounted on the guide semi-jacket enveloping the lower part of the drag conveyor trough line, and consisting of two horizontal equally-spaced, parallel, opposite-directed and telescopic spacer hydraulic jacks and two feed hydraulic jacks located along the sides of drag conveyor and hinged to rigid semi-jacket of support plate and to the guide semi-jacket of power spacer-feed mechanism.
EFFECT: development of structural scheme of self-moving pickup mechanism with a rigid trough line designed for taking considerable loads from the mined rock broken with blasting and for moving along the trough line of the loading machine, boring plant or another excavation equipment.
SUBSTANCE: conveyor pan comprises base 1 with two side plates 2, 3, intermediate floor 5, and replaceable trough 20 making upper flight to be secured to and detached from base 1. Trough 20 comprises side sections 21 with top flange 23 and upper flight fastener including screwbolts to be secured to base 1 in place. Side section top flange has multiple recesses 28 with open edge whereto welded are retaining strips 27 extending sideways above top flange 23. Said top flange has also multiple bolt holes 26 for said multiple screwbolts.
EFFECT: easier replacement.
16 cl, 4 dwg
SUBSTANCE: proposed gate conveyor comprises transport flute made up of several interconnected sections with its both ends equipped with drive stations and/or scraper chain tensioning heads 4. Flute every section 19 has scrapper chain upper and lower runs confined by lateral sections and conveyor bottom as well as receiving appliances 18 arranged outside lateral sections for flute section connectors. Conveyor incorporates rotary support 11 for hinged joint with adjacent sections arranged between said connectors and between lateral sections at central lengthwise axis of flute section.
EFFECT: reduced wear and required drive power.
20 cl, 12 dwg
FIELD: transport, distribution of fluids.
SUBSTANCE: proposed section comprises sidewalls (1), bottom (4) to joint said sidewalls to make top and bottom branches. It has also extension elements (5, 6), for example winning machine tracks on the side of breakage face and horn arranged on the side of mine support backfill, as well as devices to transfer transport chute. Top and bottom branches and two-side extension elements are arranged in mirror symmetry with horizontal axis of symmetry (S) crossing the chute bottom. Note that bottom branch functions like top branch does and that change of branches and winning machine tracks are effected at a time. Changeable angle-piece (9) is additionally included, specially adapted for winning machine feed system, as well as under-floor sheet with clamp plate (10) arranged on transport chute lower side. Said extension elements and said additional parts have symmetric mounting holes (8) arranged to allow mounting irrespective of their position after turning over.
EFFECT: longer life.
2 cl, 4 dwg
SUBSTANCE: invention relates to joint element for jointing the chute section of the chain scraper or for the mining machine guide sections, particularly, for the grader guide, incorporating two heads made integral by means of the rod narrowing along the width. Every head side facing the rod is furnished with bulged-round shoulders inclined towards the rod. The invention proposes also the open-side pockets arranged on the chute sections to house to aforesaid joint element.
EFFECT: possibility of transmitting high axial loads at high angular mobility and simpler assembly of jointing elements.
19 cl, 5 dwg
FIELD: mining industry; face and/or drift conveyors.
SUBSTANCE: proposed section of trough with pair consists of cast parts of sides with cast-to vertical shelf passing over height of lower and upper runs, raised lower cast-to flanged shelf, cast-to foot flange projecting inwards, to lower side of which sheet of bottom closing lower run is welded, and receiving pockets cast to end face sides, and bottom of conveyor trough made of rolled sheet. Conveyor through has shackle-like segments at both longitudinal sides which get into spline cutouts in vertical shelves of sides and are welded to side from outer side. Flanged shelves on lower side are provided with cavities to reduce their weight, and side and/or closing section are welded to sides in zone of upper run.
EFFECT: improved design.
13 cl, 6 dwg
FIELD: mining industry; face and drift conveyors.
SUBSTANCE: proposed section contains lower run 2 and upper run 3 for driving chain scrapers, welded frame structure 1 with interconnected sides, transport bottom 8 and connecting appliances 60. according to invention, sides consists of mirror turned-over solid rolled sections 10 of asymmetric form constant along length of section. Sections 10 are turned outwards and they include lower and upper shelves and raised intermediate shelf connecting lower and upper shelves and provided with bend on which at least one step is made from inner side to support and weld-to at least one intermediate sheet 40A reinforcing rolled sections 10. Transport bottom 8 is welded to two rolled side sections 5 to form replaceable tray 4.
EFFECT: simplified design owing to reduction of number of components, and facilitated manufacture owing to automatic mounting and welding operations.
26 cl, 7 dwg
FIELD: railway transport.
SUBSTANCE: invention relates to machines for cleaning track ballast in process of repair of track. Proposed machine contains guide chute and endless jib chain installed on guide rollers in chute and provided with combs and pins on links for gripping and transporting crushed stone of ballast, chain drive and conveyor for delivering crushed stone into cleaning system. Detachable panels with protective coating in form of hard alloy plates are secured on inner surface of guides chute inlet has front edge drop-like in cross section.
EFFECT: considerable reduction of wear of chute by crushed stone transported in process of cleaning.
2 cl, 3 dwg
FIELD: mining industry; underground face and gate conveyors.
SUBSTANCE: proposed section of trough for underground face and gate conveyors contains upper and lower runs for driving scrapers of scraper chain, transport bottom separating them, connecting devices and two sides, each including rolled U-shaped steel section with one intermediate web and two flanged webs which are interconnected by at least one shaft arranged at approximately half of height and welded to vertically projecting intermediate web of U-shaped steel section. Said U-shaped steel sections pointed outside by their horizontal flanged webs are interconnected. Upper run has two separated rolled preferably L-shaped or T-shaped side sections being welded to transport bottom by upper webs. Sheet connecting U-shaped steel sections rests, through straps forming side guides for lower run, on sheet of bottom welded with lower flanged webs.
EFFECT: increased service life of section of trough, cut down cost of manufacture, simple design of trough, possibility of use on high capacity modern conveyors.
20 cl, 5 dwg
FIELD: mining industry; underground face and gate conveyors.
SUBSTANCE: proposed section of trough for underground face and gate conveyors contains asymmetrical sides consisting of cast parts interconnecting on intermediate web by welded-to sheet, which, projecting outside from intermediate web, include upper molded-to flanged projection and lower to-to flanged web and to-to foot flange projecting inwards which partially limits from side a lower run to drive scrapers of scraper chain and to which sheet of bottom closing downwards lower run is welded. Cast part is provided at least one step on inner side of intermediate web mainly at half of height between flanged web and flanged projection. Said step is used to support and to weld-to intermediate sheet of bottom. Intermediate web and foot flange form profiled reinforcement under step. Intermediate web over step limits from side the intake space for upper run containing rolled side sections welded with transport bottom.
EFFECT: increased service life of trough section, cut down cost of manufacture.
28 cl, 6 dwg
FIELD: conveyers comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material.
SUBSTANCE: chute section of coal production rig has load-lifting shaft section and reverse stroke shaft section adapted for scraper chain conveyer guider receiving. Chute base is located between the sections. The chute base has fixing means arranged from embedding side and from face side at chute ends to receive connection member of chute sections, which connects adjacent chute sections with each other to provide tensile strength thereof. The chute also has guiding means to guide production machine, which moves along mining face plane, and deflected guiding sheet, which creates loading platform connected with chute section from mining face plane side and extending from bed to load-lifting shaft section. Degree of lower guiding sheet part folding relatively chute base exceeds that of upper guiding sheet part. The guiding sheet is provided with depressions formed at chute section ends. The depression sizes correspond to that of fixing means and/or connection means, which connect chute sections one to another. Lower part of guiding sheet defines bridge at lower edge. The bridge extends to chute section ends.
EFFECT: elimination of face conveyer lifting.
22 cl, 2 dwg
FIELD: mining industry.
SUBSTANCE: method for extraction and underground use of coal includes cleaning extraction and dumping of coal, fixing and controlling ceiling and transporting coal along face to drift. On the drift, in moveable generator, coal is pulverized for intensive burning with use of jets in water boiler firebox, where high temperature of steam is achieved (about 1400 C°), enough for decomposition of water on oxygen and hydrogen. These are separated, then oxygen is fed back to jets, and hydrogen is outputted along pipes and hoses in drifts and shaft. Variants of underground generator for realization of this method are provided. Also provided is method for extraction of disturbed coal beds by short faces. It includes extraction and dumping of coal on face conveyor, fixing of ceiling behind combine, moving conveyor line and support sections in direction of cleaning face displacement, control of ceiling with destruction and partial filling. Extraction of coal is performed in short curvilinear faces by long stripes along bed, in straight drive without forwarding drifts, with preservation and reuse of ventilation and conveyor drifts, equipped with mounting manipulator robots, with fixing behind combine by automatically operating support deflectors without unloading and displacing sections in area of coal extraction. Extraction and transporting of coal is performed by fast one-drum combine and curvilinear reloading conveyor, supplying coal to drift conveyor or immediately to underground gas or energy generator placed immediately on drift. Also proposed is face scraper conveyor for realization of said method, wherein pans are made with step along front face profile, greater, than along back one, while forming common line curved towards face with constant curvature. Also proposed is a method for controlling complex for unmanned coal extraction.
EFFECT: higher efficiency, effectiveness, broader functional capabilities.
8 cl, 5 dwg