Movable belt conveyor for filling and waste rock throwing

Abstract

The movable belt conveyor comprises hydraulic jacks, hanging connecting devices, carrier roller sets and a belt, the hanging connecting devices are connected between the hydraulic jacks, and the hanging connecting devices are connected with the multiple carrier roller sets; a first supporting frame is connected to a top beam of the hydraulic jack, a supporting frame is connected to the lower portion of the first supporting frame, and tensioning devices are arranged on the two sides of the supporting frame. The front end of the tensioning device is connected with a machine head roller, and a motor is fixed outside the supporting frame and connected with the machine head roller. A second supporting frame is connected to a top beam of the hydraulic jack, a connecting frame is connected to the lower portion of the second supporting frame, a machine tail roller is arranged in the connecting frame, and sliding devices are arranged on the two sides of the connecting frame. A supporting plate is fixed between the carrier roller sets, and a discharging device is obliquely arranged on the upper portion of the supporting plate. The discharging device is arranged on the carrier roller set, so that the effect of discharging in the conveying process is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of filling belt conveyors, in particular to a movable belt conveyor for filling waste rock. Background Art

[0002] In the traditional underground coal mining method, the coal mining machine cuts the coal and the support moves forward. The roof above the coal seam falls off to form a goaf. If the goaf is not filled, a collapse pit will appear on the surface. At present, the filling mining technology mainly includes solid filling and paste filling technology. The solid filling technology is to use mixed filling materials such as coal gangue and fly ash underground or on the ground to transport the filling materials from the wellbore to the filling conveyor. The filling conveyor transports the filling materials to the goaf, and then uses a compaction device to compact the filling materials to control the movement of the rock layer and the ground collapse.

[0003] The existing method of conveying filling materials is to transport the filling materials by hanging a bottom-discharging scraper conveyor on the rear of a hydraulic support. The bottom-discharging scraper conveyor uses a connecting plate to connect and fix the rollers, and unloads the filling materials after transferring them to the tail of the belt conveyor. Due to the influence of terrain, comprehensive mining working face height, slope changes or other factors, sometimes when conveying gangue, the tail of the bottom-discharging scraper conveyor cannot be set on the filling working face of the goaf for unloading. Therefore, a device is designed to facilitate unloading during transportation. Summary of the invention

[0004] In order to solve the problem that the existing bottom-discharging belt conveyor cannot discharge materials according to the changes of the filling working surface of the goaf, the present invention provides a movable belt conveyor for filling and throwing away waste, and a discharging device is arranged on the roller group to achieve the effect of discharging materials during transportation.

[0005] To achieve the above object, the technical solution adopted by the present invention is: A movable belt conveyor for filling and throwing away waste rock, comprising a plurality of hydraulic jacks, a hanging connection device, a plurality of roller groups and a belt, wherein the plurality of hydraulic jacks are arranged in a linear interval from the front to the back of the wellbore material outlet in the goaf; a support frame 1 is connected to the top beam of the hydraulic jack arranged at the front side, a support frame is connected to the lower part of the support frame, tensioning devices are arranged on both sides of the support frame, a machine head roller is connected between the front ends of the two tensioning devices, a motor is fixed to the front end of the outside of the support frame, and the motor is connected to the rotating shaft of the machine head roller; A hanging connection device is connected between each pair of hydraulic jacks, and a plurality of roller groups are connected to the lower part of the hanging connection device; a support plate is fixed on one group of roller groups, and a discharge device is obliquely arranged on the upper part of the support plate; A second support frame is connected to the top beam of the hydraulic jack arranged at the tail, a connecting frame is connected to the lower part of the second support frame, a tail roller is arranged inside the connecting frame, sliding devices are arranged on both sides of the connecting frame, and the sliding devices are connected to the tail roller; the leading end of the belt passes through the head roller, multiple groups of rollers, the unloading device and the tail roller, and then passes through the lower part of the multiple groups of rollers and the head roller to be connected to the tail end of the belt.

[0006] Furthermore, the hanging connection device includes a connecting beam and a plurality of connecting chains, the upper and lower parts of the connecting beam are both connected with a plurality of connecting chains, the connecting chain at the upper part of the connecting beam is connected to the top beam of the hydraulic jack, and the connecting chain at the lower part of the connecting beam is connected to the roller group. The setting of the connecting beam and the connecting chain facilitates the connection of the roller group and the hydraulic jack.

[0007] Furthermore, a sliding device is provided between the lower part of the hydraulic jack and the connecting beam, and the sliding device includes a plurality of slide rails, a cross beam and a pulley, the slide rail is fixed to the lower part of the hydraulic jack, the upper part of the cross beam is sleeved inside the slide rail, a pulley is provided between the cross beam and the slide rail, the pulley is connected to the cross beam, a plurality of fixing seats are fixed to the lower part of the cross beam along the length direction of the cross beam, and the connecting beam and the fixing seats are connected by a connecting chain. By providing the sliding device, it is convenient to move the roller group after filling.

[0008] Furthermore, the tensioning device includes two brackets and a hydraulic cylinder 1, the two brackets are respectively fitted on the front ends of both sides of the bracket, the head roller is arranged between the front ends of the two brackets, both brackets are provided with connecting seats, the hydraulic cylinder 1 is fixed to both sides of the bracket, and the piston rod of the hydraulic cylinder 1 is connected to the connecting seat. Through the arrangement of the hydraulic cylinder 1 and the bracket, it is convenient to adjust the position of the head roller to achieve the effect of tensioning the belt.

[0009] Furthermore, the sliding device includes a second hydraulic cylinder and a slider, slideways are provided on both sides of the connecting frame, the slider is provided in the slideway, and both ends of the tail roller are connected to the middle of the two sliders; the second hydraulic cylinder is provided in the middle of both sides of the connecting frame, and the piston rod of the second hydraulic cylinder is connected to the side of the slider. Through the provision of the slideway and the slider, it is convenient to adjust the tail roller to move toward the tail of the connecting frame to achieve the effect of tensioning the belt.

[0010] Furthermore, the unloading device includes two columns and a connecting rod. The two columns are obliquely symmetrically arranged on both sides of the support plate. Each column is provided with an adjusting device. Both ends of the connecting rod are connected to the adjusting device, and a baffle is connected to the lower part of the connecting rod.

[0011] Furthermore, the side edge of the baffle in the length direction forms an angle with the side edge of the belt in the length direction, and the angle is 45°.

[0012] Furthermore, the adjustment device includes a sleeve and a connecting piece, the sleeve is fixed on the column, a spring is arranged inside the sleeve; the upper part of the connecting piece is arranged on the top of the sleeve, the lower part of the connecting piece passes through the spring and the bottom of the sleeve and is suspended, the bottom of the connecting piece is connected with a nut, and the upper part of the connecting piece is connected to the end of the connecting rod. The setting of the adjustment device can adjust the gap between the baffle and the belt after the baffle is worn, thereby increasing the service life of the unloading device.

[0013] Furthermore, the upper part of the connecting piece is an arc-shaped piece, the end of the connecting rod is arranged in the arc-shaped piece, the two ends of the arc-shaped piece are connected by bolts, the lower part of the connecting piece is columnar, and the lower part of the connecting piece is provided with threads. The setting of the arc-shaped piece of the connecting piece facilitates the adjustment of the angle of the baffle plate and improves the effect of blocking gangue, and the lower part of the connecting piece is provided with threads to ensure the stability of the connecting piece.

[0014] Furthermore, each group of the roller groups is provided with a support plate, and a unloading device is provided on the support plate.

[0015] Through the above technical solution, the beneficial effects of the present invention are: The present invention provides a discharge device between the roller frames to facilitate adjustment of the discharge position according to the needs of the comprehensive mining working face. The present invention provides an adjustment device on the discharge device to facilitate adjustment of the distance between the baffle and the belt, thereby improving the service life of the discharge device. The present invention facilitates adjustment of the angle of the baffle through the structural setting of the connecting piece arc piece. The present invention provides a tensioning device on the support frame and a sliding device on the connecting frame. When it is necessary to tension the belt, the tensioning device and the sliding device work together to achieve the effect of tensioning the belt. The present invention provides a sliding device between the connecting beam and the hydraulic jack to facilitate movement of the roller group. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a structural schematic diagram of a movable belt conveyor for filling and throwing away waste.

[0017] Figure 2 The present invention is a schematic diagram of the front end structure of a movable belt conveyor for filling and throwing away waste.

[0018] Figure 3 The present invention is a schematic diagram of the tail end structure of a movable belt conveyor for filling and throwing away waste.

[0019] Figure 4 The present invention is a schematic structural diagram of a discharge device and rollers of a movable belt conveyor for filling and throwing away waste.

[0020] Figure 5 The present invention is a top view of a discharging device of a movable belt conveyor for filling and throwing away waste.

[0021] Figure 6The invention is a movable belt conveyor for filling and throwing away waste. Figure 3 Enlarged structural diagram at A in the middle.

[0022] Figure 7 The invention is a movable belt conveyor for filling and throwing away waste. Figure 4 Enlarged structural diagram at B in the middle.

[0023] Figure 8 The present invention is a schematic structural diagram of a sliding device of a movable belt conveyor for filling waste rock.

[0024] Fig. 9 It is a structural schematic diagram of Example 2 of a movable belt conveyor for filling waste rock of the present invention.

[0025] The numbers in the attached drawings are: 1, hydraulic jack, 2, support frame 2, 3, connecting frame, 4, tail roller, 5, slider, 6, hydraulic cylinder 2, 7, connecting chain, 8, roller frame, 9, connecting beam, 10, connecting rod, 11, belt, 12, unloading device, 13, support frame 1, 14, head roller, 15, motor, 16, bracket, 17, hydraulic cylinder 1, 18, support frame, 19, baffle, 20, connecting rod, 21, sleeve, 22, support plate, 23, column, 24, connecting piece, 25, spring, 26, connecting seat, 27, crossbeam, 28, slide rail, 29, fixed seat, 30, pulley. DETAILED DESCRIPTION

[0026] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings: In the present invention, unless otherwise specified, the directional words used, such as "front, rear, up, and down", are defined based on the normal working state of the belt conveyor. Specifically, the area close to the shaft material outlet is the front, the area close to the tail roller is the rear, the area close to the hydraulic jack is the top, and the area close to the bottom of the roller frame is the bottom.

[0027] Example 1: Figure 1 to Figure 8 As shown, a movable belt conveyor for filling and discarding waste rock comprises a plurality of hydraulic jacks 1, a hanging connection device, a plurality of roller groups 8 and a belt 11.

[0028] A plurality of hydraulic jacks 1 are arranged linearly and spaced apart from the wellbore filling material outlet to the goaf.

[0029] A support frame 13 is connected to the middle of the top beam of the hydraulic jack 1 near the material outlet of the wellbore, and a support frame 18 is connected to the lower part of the support frame 13. A tensioning device is arranged on both sides of the support frame 18, and the tensioning device includes two brackets 16 and a hydraulic cylinder 17. The two brackets 16 are respectively fitted to the front ends of both sides of the bracket 18. A head roller 14 is arranged between the front ends of the two brackets 16. A motor 15 is arranged on the outer side of the front end of one of the brackets 16, and the output end of the motor 15 passes through the bracket 16 and is connected to the shaft of the head roller 14. The hydraulic cylinder 17 is fixed to the middle of both sides of the bracket 18, and a connecting seat 26 is fixed to the bracket 16 near the head roller 14, and the piston rod of the hydraulic cylinder 17 is connected to the connecting seat 26.

[0030] A hanging connection device is provided between each pair of hydraulic jacks 1, and the hanging connection device includes a connecting beam 9 and a plurality of connecting chains 7. The upper and lower parts of the connecting beam 9 are connected with connecting chains 7, and two connecting chains 7 are fixed at both ends of the upper part of the connecting beam 9, respectively. The two connecting chains 7 are respectively connected to the side parts of the top beam of the hydraulic jack 1 near the two ends of the connecting beam 9, and a plurality of connecting chains 7 are provided at the lower part of the connecting beam 9, and every two connecting chains 7 are connected to a group of roller groups.

[0031] Each group of roller sets includes a connecting rod 10 and two roller frames 8, and both sides of the upper part of the connecting rod 10 are fixedly connected to the connecting chain 7. The two roller frames 8 are respectively fixed to the two ends of the connecting rod 10. In this embodiment, the upper part of the roller frame 8 is two rollers arranged obliquely opposite to each other, and the lower part of the roller frame 8 is a roller arranged horizontally.

[0032] A support plate 22 is fixed between one group of roller frames 8 near the discharge hole, and a discharge device 12 is obliquely arranged on the upper part of the support plate 22. Specifically, the discharge device 12 includes two columns 23 and a connecting rod 20. The two columns 23 are obliquely symmetrically arranged on both sides of the support plate 22. Each column 23 is provided with an adjustment device, and the adjustment device includes a sleeve 21 and a connecting member 24. The sleeve 21 is fixed on the column 23, and a spring 25 is arranged inside the sleeve 21; the upper part of the connecting member 24 is an arc-shaped piece, and the upper part of the connecting member 24 is arranged on the top of the sleeve 21. The top of the sleeve 21 is open, and the inner diameter of the top of the sleeve 21 is greater than the width of the arc-shaped piece of the connecting member 24. It is convenient for the arc-shaped piece of the connecting member 24 to slide in the sleeve 21. The two ends of the connecting rod 20 are arranged in the two arc-shaped pieces, and a sliding groove is opened on the side of the sleeve 21, which is convenient for the connecting rod 20 to slide in the sliding groove of the sleeve 21. The two ends of the arc-shaped piece of the connecting member 24 are connected by bolts. The lower part of the connecting member 24 is columnar, and a thread is provided on the lower part of the connecting member 24. The lower part of the connecting member 24 passes through the spring 25 and the bottom of the sleeve 21 and is suspended in the air. A nut is connected to the bottom of the connecting member 24. The side of the connecting rod 20 is connected to a baffle 19, and the bottom of the baffle 19 forms an angle with the side wall of the belt 11 in the length direction, and the angle is 45°. It is convenient to prevent the gangue filling material transported by the belt 11 from entering the filling working surface of the goaf.

[0033] The middle of the top beam of the hydraulic jack 1 arranged at the tail is connected to a support frame 2, the lower part of the support frame 2 is connected to a connecting frame 3, a tail roller 4 is arranged inside the connecting frame 3, and sliding devices are arranged on both sides of the connecting frame 3. Specifically, the sliding device includes a hydraulic cylinder 2 6 and a slider 5. The rear parts of both sides of the connecting frame 3 are provided with slideways, and the slider 5 is arranged in the slideway. The connecting shaft of the tail roller 4 is arranged in the middle of the two sliders 5 and is rotatably connected with the slider 5. The hydraulic cylinder 2 6 is arranged in the middle of both sides of the connecting frame 3, and the piston rod of the hydraulic cylinder 2 6 is fixedly connected to the side wall of the slider 5. The head end of the belt 11 passes through the head roller 14, multiple groups of roller groups 8, the unloading device 12 and the tail roller 4, and then passes through the bottom of the roller frame 8 and the head roller 14 to connect with the tail end of the belt 11.

[0034] In order to improve the use effect and facilitate the movement of the roller group after the filling is completed, a sliding device is arranged between the lower part of the top beam of the hydraulic jack 1 and the connecting beam 9. The sliding device includes a plurality of slide rails 28, a cross beam 27 and a pulley 30. The lower part of the top beam of each hydraulic jack 1 is fixed with a slide rail 28. The slide rail 28 is a "concave" structure. The cross beam 27 is an I-beam. The upper part of the cross beam 27 is fitted into the slide rail 28. Both sides of the upper part of the cross beam 27 are connected with pulleys 30. The pulley 30 can move on both sides inside the slide rail 28. A plurality of fixed seats 29 are fixed to the lower part of the cross beam 27 along the length direction of the cross beam 27. The upper part of each fixed seat 29 is connected to the cross beam 27 by bolts. A lifting ring is arranged at the lower part of the fixed seat 29. The connecting chain 7 is arranged in the lifting ring. The connecting beam 9 is connected to the fixed seat 29 through the connecting chain 7.

[0035] When in use, the gangue and other filling materials at the shaft material outlet are loaded onto the belt 11 at the head roller 14, and the motor 15 is started. The motor 15 drives the head roller 14 to rotate, and the head roller 14 drives the belt 11 to move. The tail roller 4 rotates driven by the movement of the belt 11, and the belt 11 drives the gangue and other filling materials to be transported. When the gangue and other filling materials are transported to the unloading device 12, the baffle 19 of the unloading device 12 blocks the gangue from moving forward. Under the action of the subsequent accumulation of the continuously transported gangue and the forward movement of the belt 11, the baffle 19 of the unloading device 12 unloads the gangue and other filling materials into the filling working surface of the goaf to be filled.

[0036] When the belt 11 needs to be tensioned, the hydraulic cylinder 17 pushes the connecting seat 26 to move the bracket 16 forward, and the bracket 16 drives the head roller 14 forward. The piston rod of the hydraulic cylinder 2 6 drives the slider 5 to move toward the end of the connecting frame 3, so that the tail roller 4 moves backward, that is, the head roller 14 and the tail roller 4 move on both sides of the belt 11 at the same time to achieve the effect of tensioning the belt 11.

[0037] When the height of the baffle 19 needs to be adjusted, the nut at the bottom of the sleeve 21 is loosened, and the connecting member 24 is pushed downward to move the baffle 19 closer to the belt 11. After the distance is adjusted, the nut is tightened.

[0038] When the angle of the baffle 19 needs to be adjusted, the bolts of the arc-shaped piece of the connecting member 24 are loosened, and the connecting rod 20 is rotated so that the connecting rod 20 drives the baffle 19 to rotate. After adjusting the angle, the bolts on the arc-shaped piece of the connecting member 24 are tightened.

[0039] When the roller group 8 needs to be moved, the connecting frame 3 or the connecting beam 9 can be pushed manually to drive the upper crossbeam 27 to move. The pulley 30 fixed on the crossbeam 27 moves in the slide rail 28 under the action of the thrust, which facilitates the adjustment of the position of the roller group 8.

[0040] Embodiment 2: The structure of Embodiment 2 is basically the same as that of Embodiment 1, and the similarities are not repeated here. The difference is that Fig. 9 As shown, in this embodiment, a support plate 22 is fixed between the roller frames 8 of each group of the roller groups, and a discharge device is obliquely arranged on the upper part of the support plate 22. The corresponding discharge device can be used according to the position of the filling working face of the goaf area, and the discharge device is not used. By loosening the bolts of the upper arc-shaped piece of the connecting member 24, the connecting rod 20 is rotated, so that the connecting rod 20 drives the baffle 19 to rotate upward. When the baffle 19 is at the upper part of the connecting rod 20, the bolts on the arc-shaped piece of the connecting member 24 can be tightened.

[0041] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A movable belt conveyor for filling and throwing away waste rock, comprising a plurality of hydraulic jacks (1), a hanging connection device, a plurality of roller groups (8) and a belt (11), wherein the plurality of hydraulic jacks (1) are arranged linearly from the front to the back of the wellbore material outlet in the goaf; characterized in that: A support frame (13) is connected to the top beam of the hydraulic jack (1) arranged at the front side, a support frame (18) is connected to the lower part of the support frame (13), tensioning devices are arranged on both sides of the support frame (18), a head roller (14) is connected between the front ends of the two tensioning devices, a motor (15) is fixed to the front end of the outside of the support frame (18), and the motor is connected to the rotating shaft of the head roller (14); A hanging connection device is connected between each pair of hydraulic jacks (1), and a plurality of roller groups are connected to the lower portion of the hanging connection device; a support plate (22) is fixed to one group of roller groups, and a discharge device (12) is obliquely arranged on the upper portion of the support plate (22); A second support frame (2) is connected to the top beam of a hydraulic jack (1) arranged at the tail, a connecting frame (3) is connected to the lower part of the second support frame (2), a tail roller (4) is arranged inside the connecting frame (3), sliding devices are arranged on both sides of the connecting frame (3), and the sliding devices are connected to the tail roller (4); the front end of the belt (11) passes through the head roller (14), a plurality of roller groups (8), a discharge device (12) and the tail roller (4), and then passes through the lower part of the plurality of roller groups (8), the head roller (14), and then is connected to the rear end of the belt (11).

2. A movable belt conveyor for filling and throwing away waste as claimed in claim 1, characterized in that: The hanging connection device comprises a connection beam (9) and a plurality of connection chains (7), the upper and lower parts of the connection beam (9) are both connected to the plurality of connection chains (7), the connection chain (7) at the upper part of the connection beam (9) is connected to the top beam of the hydraulic jack (1), and the connection chain (7) at the lower part of the connection beam (9) is connected to the roller assembly.

3. A movable belt conveyor for filling and throwing away waste as claimed in claim 2, characterized in that: A sliding device is provided between the lower part of the hydraulic jack (1) and the connecting beam (9), the sliding device comprising a plurality of slide rails (28), a cross beam (27) and a pulley (30), the slide rail (28) being fixed to the lower part of the hydraulic jack (1), the upper part of the cross beam (27) being sleeved inside the slide rail (28), a pulley (30) being provided between the cross beam (27) and the slide rail (28), the pulley (30) being connected to the cross beam (27), a plurality of fixing seats (29) being fixed to the lower part of the cross beam (27) along the length direction of the cross beam (27), and the connecting beam (9) and the fixing seats (29) being connected via a connecting chain (7).

4. A movable belt conveyor for filling and throwing away waste as claimed in claim 1, characterized in that: The tensioning device comprises two brackets (16) and a hydraulic cylinder (17), the two brackets are respectively fitted on the front ends of both sides of the bracket (18), the head roller (14) is arranged between the front ends of the two brackets (16), and the two brackets (16) are both provided with a connecting seat (26), the hydraulic cylinder (17) is fixed on both sides of the bracket (18), and the piston rod of the hydraulic cylinder (17) is connected to the connecting seat (26).

5. The movable belt conveyor for filling and discarding waste rock according to claim 1, characterized in that: The sliding device comprises a second hydraulic cylinder (6) and a sliding block (5); slideways are provided on both sides of the connecting frame (3); the sliding block (5) is arranged in the slideways; the two ends of the tail roller (4) are connected to the middle of the two sliding blocks (5); the second hydraulic cylinder (6) is arranged in the middle of both sides of the connecting frame (3); the piston rod of the second hydraulic cylinder (6) is connected to the side of the sliding block (5).

6. A movable belt conveyor for filling and throwing away waste as claimed in claim 1, characterized in that: The unloading device (12) comprises two columns (23) and a connecting rod (20), wherein the two columns (23) are arranged obliquely and symmetrically on both sides of the support plate (22), each column (23) is provided with an adjustment device, both ends of the connecting rod (20) are connected to the adjustment device, and the lower part of the connecting rod (20) is connected to a baffle (19).

7. A movable belt conveyor for filling and throwing away waste as claimed in claim 6, characterized in that: The side edge of the baffle (19) in the length direction forms an angle with the side edge of the belt (11) in the length direction, and the angle is 45°.

8. A movable belt conveyor for filling and throwing away waste as claimed in claim 6, characterized in that: The adjusting device comprises a sleeve (21) and a connecting piece (24), wherein the sleeve (21) is fixed on a column (23), and a spring (25) is arranged inside the sleeve (21); the upper portion of the connecting piece (24) is arranged on the top of the sleeve (21), and the lower portion of the connecting piece (24) passes through the spring (25) and the bottom of the sleeve (21) and is suspended in the air, the bottom of the connecting piece (24) is connected to a nut, and the upper portion of the connecting piece (24) is connected to the end of a connecting rod (20).

9. A movable belt conveyor for filling and discarding waste as claimed in claim 8, characterized in that: The upper portion of the connecting member (24) is an arc-shaped piece, the end of the connecting rod (20) is arranged in the arc-shaped piece, the two ends of the arc-shaped piece are connected by bolts, and the lower portion of the connecting member (24) is columnar, and the lower portion of the connecting member (24) is provided with threads.

10. The movable belt conveyor for filling and discarding waste rock according to claim 1, characterized in that: A support plate (22) is provided on each group of rollers, and a discharge device (12) is provided on the support plate (22).

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