RU2003800C1 - Plow unit - Google Patents

Abstract

SUMMARY OF THE INVENTION A plow installation comprises a support frame, a housing, an outer and inner connecting block, an apparatus for guiding a traction chain with an inner channel, and a chain mechanism. The support frame consists of two extreme plates and a middle plate, which are kinematically connected to each other from the treatment face. The housing is placed on the middle plate. Connecting blocks are placed at the ends of each extreme plate from the bookmark side. The chain mechanism is made in the form of extreme chain blocks with spline grooves, intermediate chain blocks with spline grooves, an internal connecting block and devices for transmitting the tension of the tension chain to the support frame with offset. The inner connecting block of each of the end plates and each corresponding connecting block of the middle plate have a device for centering them in relation to each other in height. 6 Z. PF-LY. 11 ill.

Description

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ABOUT

The invention relates to the mining industry, in particular to plow plants, and can be used in mining.

The purpose of the invention is to increase the reliability of the plow installation by reducing the possibility of pinching at the joints of the plates of the support ring with the chain mechanism.

In FIG. 1 shows a plow installation, top view; in FIG. 2 - plow installation with a downhole conveyor, side view; in FIG. 3 - support frame plow installation with a chain mechanism; in FIG. 4 is a section AA in FIG. 3; in FIG. 5 - plow installation, view from the side of the stope; in FIG. 6 - support frame plow installation with connecting blocks; in FIG. 7 is a disassembled chain block; in FIG. 8 is the same. assembled; in FIG. 9 - same, top view; in FIG. 10 is a section BB in FIG. 9; in FIG. 11 - insert chain block.

The Strugovo installation picks up the bottomhole conveyor 1, made in the form of a chain scraper conveyor, from below with its support frame, which consists of several parts, and passes along the sliding surface 2, which is formed by the sliding guides mounted on the conveyor 1 from the bottom and installed on the bookmark side of the conveyor 1. Passing along of the sliding surface, the support frame of the plow unit is able to raise the conveyor 1 with respect to the sliding surfaces.

The three-part support frame of the plow installation consists of a middle plate 3 and two mirror-like end plates 4 and 5. A housing 6 with tool holders is located on the middle plate 3. The extreme plates 4 and 5 are connected on the side of the treatment face through an axle hinge 7, respectively using the hinge axis located in the direction of the treatment face with the middle plate 3 of the support frame. In this case, the hinge pins 8 located on the extreme plates 4 and 5 of the support frame enter with play in the hinge holes 9 of the middle plate 3 of the support frame. Hinge holes 9 in view of expediency made in the form of longitudinal holes.

The plow support plate is connected from the tab side to the driven plow chain 10, which is known to extend in the tab assembly mounted on the downhole conveyor 1 from the tab side of the tab 1, provided with stacking channels for guiding the chain.

In this case, the plates 3, 4 and 5 of the support frame enter the connecting blocks into the inner channel for the traction chain 12 of the device for guiding the traction chain 11

and here connected to the plow 10 included in the driven chain of the chain mechanism 13.

The two end plates 4 and 5 of the support frame have respectively a connecting block 14 located on the side of the support plate and a support frame located on the side of the middle plate 3 and located inside the connection block 15. The middle plate 4 of the support frame is equipped on both sides of it

5 of the bookmark, respectively, by the connecting block 16. In view of expediency, all the connecting blocks 14, 15 and 16 consist of cast parts of high wear resistance welded to the plates of the support frame.

0 The transmission of the tension of the chain is carried out between the middle plate 3 of the support frame and the two extreme plates 4 and 5 of the support frame through the connecting blocks 15 and 16, whose facing end surfaces 5 are made in the form of convex pressing surfaces 17, with which the connecting blocks 15 and 16 are supported by kinematic backlash in horizontal and vertical

0 plane x.

The chain mechanism 13 according to FIG. 1 five guides respectively of chain blocks 18 and 19, connected to each other through short sections of the chain. Equally made chain blocks 19 have a bird-shaped connecting recess 20, respectively extending along their height, into which corresponding connecting blocks 14, 15 and 16 extend from below with upward extending connecting extensions 21 and 22.

The outer connecting blocks 14 of the end plates 4 and 5 of the support frame, respectively, enter their connecting extension 21 into their own chain block 19, while the connecting extensions 22 located on the inside of the connecting blocks 15 and 16 and, accordingly, are shorter, respectively, in pairs enter the connecting recess of the common chain block 19. The connecting extensions 21 and 22 have otherwise in the spline-shaped connecting recesses 20 of the chain blocks 19 such kinematic backlash in the direction of chain tension plow, that the tension force of the plow circuit 10 acts from the rear in a biasing manner on the plow support plate and thereby on the plow. Therefore, if the plow with the support frame moves along the clearing face of FIG. 1 in the direction of the skid 23, the tension force of the chain of the jet 10 is transmitted through the rear chain block 19 and the plate 5 of the support frame, as well as through the convex pressing surfaces 17. When the direction of the tension of the chain is changed, the conditions change accordingly.

Further in connection with FIG. 7-11, the implementation of the chain blocks 19 is illustrated. Shown in FIG. 1, the middle chain block 19 does not have a connecting recess for engaging the connecting blocks. It serves only as an intermediate block of the chain mechanism 13. The chain blocks 19 respectively consist of two halves 24 and 25 of the block, made in the form of forgings or cast parts. Both halves 24 and 25 are joined together and fastened over surfaces 26 so that the holes 27 can be precisely drilled at the ends of the halves of the block. After that, the halves 24 and 25 of the block are again divided into holes

27 half of the block are inserted with its pins 29 prefabricated inserts

28 after the chain link 30 has been put on the inserts 28. Then after that, the two halves 24 and 25 of the block are finally welded together. The inserts 28 and the suspended links of the chain 30 are thereby firmly and permanently connected to the chain block. The ends of the halves 24 and 25 of the block form a forked part 31 in pairs, into the cheeks of which an insert 28 is inserted, which at the same time passes through a pivotally suspended chain link 30, the latter has a recess 32 coordinated with the internal circuit of the chain link 30.

As shown in FIGS. 1 and 3, on both end plates 4 and 5 of the support frame, the chain blocks 19 are connected through short sections of the chain, including both links 30 of the chain link 30 and the chain lock 33 suspended between them, which can be opened for change of chain blocks 19. Inside the chain blocks 19 are connected to the middle chain block 19 through two chain locks 33.

As further shown in FIG. 7-9, the halves 24 and 25 of the block have, on their cheek-forming forks, the ends of the recess 34 into which the friction plates 35 are welded. The half 25 of the block facing the coal face has a recess 36 on the underside for passing horizontal plate parts 37 (Fig. 1) connecting blocks 14, 15, 16. In addition, in FIG. 8 shows that the slotted connecting recesses 20 of the chain blocks 19 are limited by parallel side surfaces 38, then

as in FIG. 3 connecting blocks

14, 15, 16, and respectively their connecting apertures 20 and upwardly extending connecting extensions 21 on both sides are convex, so that they can be supported by these convex surfaces 39 on flat surfaces 38. As shown primarily in FIG. 3 and 4, internally connected

the blocks 15 of both extreme plates 4 and 5 of the support frame have in the slotted connecting recesses 20 of the chain blocks 19 a greater kinematic backlash across the direction of the chain tension than the

outside the connecting blocks 14. Therefore, the connecting extensions 21 of the external connecting blocks 14 have in their thickest place a dimension in thickness S (Fig. 4), which is larger than the dimension

the thickness S of the connecting extensions 22 located inside the connecting blocks 15. The dimension S corresponds mainly to the internal width of the connecting recesses 20. The connecting extensions 22 of the connecting blocks 16 of the middle plate 3 of the base frame are larger in thickness S.

Based on the greater kinematic backlash of the connecting blocks 15 edge

of the plates 4 and 5 of the support frame, the plates of the support frame, with a biasing effect of the rear straining forces of the plow chain, they can easily be installed at an angle to

the plane without this installation leading to distortions, in particular, to unacceptable pinching of the connecting β-blocks 15, transmitting the tension forces of the plow chain through the convex pressing surfaces 17, in the connecting recesses 20 of the chain blocks.

In FIG. Figures 5 and 6 show the inside connecting blocks 15 and 16 with their protruding upwards and connecting extensions 22 entering into the connecting recesses 20 of the chain blocks 19. It can be seen that the connecting blocks 16 of the middle plate of the support frame 3 have protruding on the connecting extensions 22

spouts or trunnions 40 included in the corresponding grooves or recesses 41 of the connecting extensions 22 of the connecting blocks

15, so that by means of a tongue-to-groove connection or correspondingly engagement of a keyway,

both connecting blocks 15 and 16 are centered along their height relative to each other.

(56) Application of Germany 3828371.cl. E 21 C 27/32. 1990.

Claims (6)

1. STRING INSTALLATION, including a support frame mounted with the possibility of movement between the rock and the face conveyor, consisting of at least two extreme plates and a middle plate, which are kinematically connected to each other from the treatment side with the possibility of limited movement along an axis parallel to the longitudinal axis support frame, housed on the middle plate of the support frame, housing with toolholders for accommodating the mining tool, placed at the ends of each extreme plate on the tab side and rigidly connected connected to the corresponding extreme plate, the outer connecting block and the inner connecting block with a convex pressing surface for transmitting the tension chain located on its end facing the middle plate, mounted on the tab ends of the middle plate on the tab side and connecting blocks rigidly connected to the middle plate , on each facing the corresponding extreme plate, the end of which has a convex pressing surface for transmitting a pull chain, which is installed with a possible interacting with the pressure surface of the inner connecting block of the corresponding end plate, the device for guiding the traction chain with the inner channel fixed to the bottom conveyor from the tab side, in which the connecting blocks of the extreme and middle plates of the supporting frame are placed, and connected on both sides with chain, in the form of extreme chain blocks sequentially interconnected by chain links with spline grooves, each of which is installed with the possibility of limited room in the direction along the longitudinal axis of the traction chain and in the direction perpendicular to the longitudinal axis of the traction chain, the outer connecting block of the corresponding end plate, intermediate chain blocks with spline grooves, each of which are installed with the possibility of limited movement in the direction along the longitudinal axis of the traction chain and in the direction perpendicular to the longitudinal axis of the traction chain, the internal connecting block of one of the outermost plates and 5 0 5 Q 5 0 5 0 5 one of the connecting blocks of the middle plate, and devices for transmitting the tension of the tension chain to the support frame with an offset, characterized in that the internal connecting block of each of the extreme plates and each corresponding connecting block of the middle plate, which are placed in a common spline groove of the corresponding intermediate chain block, have a device for centering them relative to each other in height in the form located on the end of one of the connecting blocks of the protrusion and located on the adjacent end more than the other connecting block of the recess for accommodating the protrusion, while the amount of movement of the inner connecting block of each of the extreme plates in the spline groove of the corresponding intermediate chain block in a direction perpendicular to the longitudinal axis of the chain is greater than the amount of movement of the outer connecting block of each of the extreme plates in spline groove of the corresponding extreme chain block in the same direction. 2. Installation according to claim 1, characterized in that each connecting block is made in the form of a molded part from a material with high wear resistance, which is connected to the corresponding plate of the support frame by welding. 3. Installation according to claim 1 or 2, characterized in that each connecting block has a vertically arranged connecting protrusion for placement in the spline groove of the corresponding chain block, wherein each device for transmitting the tension of the tension chain to the support frame is offset in the form of supporting surfaces located on the longitudinal walls of the spline groove of each chain block, which are parallel to one another and lie in a vertical plane, and located on the longitudinal walls of each joint itelnogo convex protrusion abutment surfaces for cooperating with corresponding bearing surfaces, 4. Installation according to one of claims 1 to 3, characterized in that the extreme chain blocks and intermediate chain blocks have the same structural design, wherein the chain link connecting the extreme chain blocks with intermediate chain blocks and the intermediate chain blocks with each other, interconnected by a chain lock to replace the corresponding chain block. 5. Installation according to one of claims 1 to 4, characterized in that each chain block is made in the form of two parts located symmetrically relative to its longitudinal axis and connected to each other by welding and two inserts, each of which has a recess for accommodating the chain link connecting the chain blocks to each other, wherein each part of the chain block is made with recesses located at its ends, which form cavities for accommodating the inserts, each insert being connected to the side walls of the corresponding recess, and each A chain vein connecting the chain blocks to each other is located on the corresponding insert and mounted rotatably with respect to the corresponding chain block.  L Zt n  L d g No. 1 I g, g 1: / fr- W; / - Z.  Oh Ј 4. Vxn 6. Installation according to claim 5, characterized in that each chain block has friction plates, and recesses are made on the outer surface of each part forming the chain block, which are located at each end of each part of the chain block. 7, Installation according to claim 6, characterized in that each insert is made with trunnions, the longitudinal axes of which are located perpendicular to the longitudinal axis of the corresponding chain flare, and each part forming the chain block is made with coaxially arranged transverse channels to accommodate the trunnions corresponding inserts, with each friction plate mounted with the possibility of overlapping outside the corresponding channel to accommodate the journal of the corresponding insert.  L22 3 D-. t- -f DGL b cr lt / gg s, 4. 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