A movable belt conveyor for filling and throwing out gangue

Abstract

The present application relates to a kind of filling movable belt conveyor for throwing gangue, including hydraulic jack, hanging connection device, roller group and belt, hydraulic jack is connected with hanging connection device, hanging connection device is connected with multiple roller groups;Hydraulic jack roof beam is connected with support frame one, the lower part of support frame is connected with support frame, and the both sides of support frame are provided with tensioning device;Tensioning device front end is connected with head cylinder, and motor is fixed outside support frame, and motor is connected with head cylinder;Hydraulic jack roof beam is connected with support frame two, the lower part of support frame two is connected with connecting frame, and the inside of connecting frame is provided with tail cylinder, and the both sides of connecting frame are provided with sliding device;Roller group is fixed with support plate, and the upper part of support plate is obliquely provided with unloading device.The present application is provided with unloading device on roller group, to achieve the effect of unloading in the course of conveying.

Description

Technical Field

[0001] This invention relates to the field of filling belt conveyor technology, and more particularly to a mobile belt conveyor for filling and dumping waste rock. Background Technology

[0002] In traditional underground coal mining, after the coal mining machine cuts the coal, the supports move forward, causing the roof above the coal seam to collapse and form a goaf. If the goaf is not filled, a subsidence pit will appear on the surface. Currently, backfilling mining technologies mainly include solid backfilling and paste backfilling technologies. Solid backfilling technology involves using a mixture of coal gangue and fly ash as backfill material, which is transported from the surface through the shaft to a backfilling conveyor. The backfilling conveyor then transports the backfill material into the goaf, where a compaction device is used to compact the backfill material, thereby controlling rock strata movement and surface subsidence.

[0003] The existing method of conveying filling materials is to use a bottom-discharge scraper conveyor suspended from the rear of a hydraulic support to transport the filling materials. The bottom-discharge scraper conveyor uses connecting plates to connect and fix the idlers, and the filling materials are unloaded after being transferred to the tail of the belt conveyor. Due to the influence of terrain, height of the fully mechanized mining face, slope changes or other factors, sometimes when conveying gangue, the tail of the bottom-discharge scraper conveyor cannot be set up on the filling face of the goaf for unloading. Therefore, a device is designed to facilitate unloading during transportation. Summary of the Invention

[0004] To address the problem that existing bottom-discharge belt conveyors cannot unload material according to changes in the goaf filling face, this invention provides a mobile belt conveyor for filling and dumping waste rock. By installing a material unloading device on the idler roller assembly, the material can be unloaded during the conveying process.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A mobile belt conveyor for filling and dumping coal includes multiple hydraulic jacks, a hanging connection device, multiple sets of idler rollers, and a belt. The multiple hydraulic jacks are arranged linearly from front to back in the goaf area from the material outlet of the shaft. A support frame is connected to the top beam of the hydraulic jacks located on the front side. A support frame is connected to the lower part of the support frame. Tensioning devices are provided on both sides of the support frame. A head roller is connected between the front ends of the two tensioning devices. A motor is fixed to the front end of the support frame. The motor is connected to the rotating shaft of the head roller.

[0007] Each pair of hydraulic jacks is connected to a hanging connection device, and multiple roller groups are connected to the lower part of the hanging connection device; a support plate is fixed on one of the roller groups, and a discharge device is obliquely arranged on the upper part of the support plate.

[0008] A second support frame is connected to the hydraulic jack beam at the tail end. A connecting frame is connected to the lower part of the second support frame. A tail roller is installed inside the connecting frame. First sliding devices are installed on both sides of the connecting frame and are connected to the tail roller. The first sliding device is connected to the tail roller. The first end of the belt passes through the head roller, multiple sets of idler rollers, unloading device and tail roller, then passes through the lower part of multiple sets of idler rollers and the head roller, and is connected to the tail end of the belt.

[0009] Furthermore, the suspension connection device includes a connecting beam and multiple connecting chains. Multiple connecting chains are connected to both the upper and lower parts of the connecting beam. The connecting chains at the upper part of the connecting beam are connected to the hydraulic jack's top beam, and the connecting chains at the lower part of the connecting beam are connected to the idler roller assembly. The connecting beam and connecting chains facilitate the connection between the idler roller assembly and the hydraulic jack.

[0010] Furthermore, a second sliding device is provided between the lower part of the hydraulic jack and the connecting beam. This second sliding device includes multiple slide rails, a crossbeam, and pulleys. The slide rails are fixed to the lower part of the hydraulic jack, the upper part of the crossbeam is fitted inside the slide rails, and pulleys are provided between the crossbeam and the slide rails. The pulleys are connected to the crossbeam, and multiple fixing seats are fixed along the length of the crossbeam at its lower part. The connecting beam is connected to the fixing seats via a connecting chain. This second sliding device facilitates the movement of the roller assembly after filling.

[0011] Furthermore, the tensioning device includes two supports and a hydraulic cylinder. The two supports are respectively fitted onto the front ends of both sides of the support frame. The head roller is positioned between the front ends of the two supports. Each support is equipped with a connecting seat. The hydraulic cylinder is fixed to both sides of the support frame, and its piston rod is connected to the connecting seat. The arrangement of the hydraulic cylinder and supports facilitates the adjustment of the head roller's position, achieving the effect of tensioning the belt.

[0012] Furthermore, the first sliding device includes a second hydraulic cylinder and a slider. Slide tracks are provided on both sides of the connecting frame, and the slider is disposed within the slide tracks. The two ends of the tail roller are connected to the middle of the two sliders. The second hydraulic cylinder is disposed 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. The arrangement of the slide tracks and sliders facilitates the adjustment of the tail roller's movement towards the tail of the connecting frame, achieving the effect of tensioning the belt.

[0013] Furthermore, the unloading device includes two columns and a connecting rod. The two columns are arranged obliquely and symmetrically on both sides of the support plate. Each column is equipped with an adjustment device. The two ends of the connecting rod are connected to the adjustment device, and a baffle is connected to the lower part of the connecting rod.

[0014] Furthermore, the side of the baffle along its length forms an angle with the side of the belt along its length, and the angle is 45°.

[0015] Furthermore, the adjusting device includes a sleeve and a connecting member. The sleeve is fixed to the column and has a spring inside. The upper part of the connecting member is located at the top of the sleeve, and the lower part of the connecting member passes through the spring and is suspended in the air at the bottom of the sleeve. A nut is connected to the bottom of the connecting member, and the upper part of the connecting member is connected to the end of a connecting rod. The adjusting device can adjust the gap between the baffle and the belt after the baffle wears, thereby improving the service life of the unloading device.

[0016] Furthermore, the upper part of the connector is an arc-shaped piece, and the end of the connecting rod is located inside the arc-shaped piece. The two ends of the arc-shaped piece are connected by bolts. The lower part of the connector is columnar, and the lower part of the connector is threaded. The arc-shaped piece of the connector facilitates the adjustment of the baffle angle and improves the rock-blocking effect. The threaded lower part of the connector ensures the stability of the connector.

[0017] Furthermore, each set of idler rollers is equipped with a support plate, and the support plate is equipped with a discharge device.

[0018] The beneficial effects of the present invention through the above technical solution are:

[0019] This invention facilitates adjustment of the unloading position according to the needs of the fully mechanized mining face by installing an unloading device between the idler frames. This invention also improves the service life of the unloading device by incorporating an adjustment device on the unloading device to facilitate adjustment of the distance between the baffle and the belt. Furthermore, the invention's arc-shaped connecting plate structure facilitates adjustment of the baffle angle. By incorporating a tensioning device on the support frame and a first sliding device on the connecting frame, the belt is tensioned when necessary through the combined action of the tensioning device and the first sliding device. Finally, this invention facilitates the movement of the idler assembly by incorporating a second sliding device between the connecting beam and the hydraulic jack. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a mobile belt conveyor for filling and throwing coal according to the present invention.

[0021] Figure 2 This is a schematic diagram of the front end structure of a mobile belt conveyor for filling and throwing waste rock according to the present invention.

[0022] Figure 3 This is a schematic diagram of the tail end structure of a mobile belt conveyor for filling and throwing coal according to the present invention.

[0023] Figure 4 This is a schematic diagram of the unloading device and idler rollers of a movable belt conveyor for filling and throwing gangue according to the present invention.

[0024] Figure 5 This is a top view of the unloading device of a mobile belt conveyor for filling and dumping waste rock according to the present invention.

[0025] Figure 6 This invention relates to a mobile belt conveyor for filling and dumping waste rock. Figure 3 Enlarged structural diagram at point A in the middle.

[0026] Figure 7 This invention relates to a mobile belt conveyor for filling and dumping waste rock. Figure 4 Enlarged structural diagram at point B.

[0027] Figure 8 This is a schematic diagram of the sliding device of a movable belt conveyor for filling and throwing coal according to the present invention.

[0028] Figure 9 This is a schematic diagram of the structure of a second embodiment of the mobile belt conveyor for filling and throwing coal according to the present invention.

[0029] The attached diagram is labeled as follows: 1. Hydraulic jack, 2. Support frame two, 3. Connecting frame, 4. Tail roller, 5. Slider, 6. Hydraulic cylinder two, 7. Connecting chain, 8. Idler roller frame, 9. Connecting beam, 10. Connecting rod, 11. Belt, 12. Unloading device, 13. Support frame one, 14. Head roller, 15. Motor, 16. Bracket, 17. Hydraulic cylinder one, 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 Implementation

[0030] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings:

[0031] In this invention, unless otherwise stated, directional terms such as "front," "rear," "up," and "down" are used in accordance with the normal operating state of the belt conveyor. Specifically, the area near the material outlet of the shaft is "front," the area near the tail roller is "rear," the area near the hydraulic jack is "up," and the area near the bottom of the idler frame is "down."

[0032] Example 1: As Figures 1-8 As shown, a mobile belt conveyor for filling and dumping waste rock includes multiple hydraulic jacks 1, a hanging connection device, multiple sets of idler rollers 8, and a belt 11.

[0033] Multiple hydraulic jacks 1 are arranged in a linear interval from the well filling material outlet into the goaf area.

[0034] A hydraulic jack 1, located near the material outlet of the well shaft, has a support frame 13 connected to its top beam. A support frame 18 is connected to the lower part of the support frame 13. Tensioning devices are installed on both sides of the support frame 18. Each tensioning device includes two brackets 16 and a hydraulic cylinder 17. The two brackets 16 are respectively fitted onto the front ends of both sides of the support frame 18. A machine head roller 14 is positioned between the front ends of the two brackets 16. A motor 15 is installed on the outer side of the front end of one of the brackets 16. The output end of the motor 15 passes through the bracket 16 and connects to the shaft of the machine head roller 14. The hydraulic cylinder 17 is fixed to the middle of both sides of the support frame 18. A connecting seat 26 is fixed to the bracket 16 near the machine head roller 14. The piston rod of the hydraulic cylinder 17 is connected to the connecting seat 26.

[0035] Each pair of hydraulic jacks 1 is equipped with a hanging connection device, which includes a connecting beam 9 and multiple connecting chains 7. The upper and lower parts of the connecting beam 9 are connected to the connecting chains 7. Two connecting chains 7 are fixed at each end of the upper part of the connecting beam 9. The two connecting chains 7 are respectively connected to the side of the top beam of the hydraulic jack 1 near the two ends of the connecting beam 9. Multiple connecting chains 7 are provided at the lower part of the connecting beam 9, and each pair of connecting chains 7 is connected to a set of idler rollers.

[0036] Each set of idler rollers includes a connecting rod 10 and two idler roller frames 8. The upper two sides of the connecting rod 10 are fixedly connected to the connecting chain 7. The two idler roller frames 8 are respectively fixed to both ends of the connecting rod 10. In this embodiment, the upper part of the idler roller frame 8 consists of two idler rollers arranged obliquely opposite each other, and the lower part of the idler roller frame 8 consists of idler rollers arranged laterally.

[0037] A support plate 22 is fixed between a group of roller frames 8 near the discharge hole. 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 equipped with an adjustment device, which includes a sleeve 21 and a connector 24. The sleeve 21 is fixed to the column 23 and contains a spring 25. The upper part of the connector 24 is an arc-shaped piece, located at the top of the sleeve 21. The top of the sleeve 21 is open, and its inner diameter is larger than the width of the arc-shaped piece, facilitating sliding of the arc-shaped piece within the sleeve 21. The two ends of the connecting rod 20 are located within the two arc-shaped pieces, and a groove is provided on the side of the sleeve 21 to facilitate sliding of the connecting rod 20 within the groove. The two ends of the arc-shaped piece of connector 24 are connected by bolts. The lower part of connector 24 is columnar and threaded. The lower part of connector 24 passes through the bottom of spring 25 and sleeve 21 and is suspended. A nut is connected to the bottom of connector 24. A baffle 19 is connected to the side of connecting rod 20. The bottom of baffle 19 forms an angle of 45° with the side wall of belt 11 along its length. This is to prevent the gangue filling material transported by belt 11 from entering the goaf filling face.

[0038] A support frame 2 is connected to the middle of the top beam of the hydraulic jack 1 located at the tail end. A connecting frame 3 is connected to the lower part of the support frame 2. A tail roller 4 is installed inside the connecting frame 3. First sliding devices are provided on both sides of the connecting frame 3. Specifically, the first sliding device includes a hydraulic cylinder 6 and a slider 5. Slide tracks are provided on both rear sides of the connecting frame 3. The slider 5 is located in the slide tracks. The connecting shaft of the tail roller 4 is located in the middle of the two sliders 5 and is rotatably connected to the sliders 5. The hydraulic cylinder 6 is located in the middle of both sides of the connecting frame 3. The piston rod of the hydraulic cylinder 6 is fixedly connected to the side wall of the slider 5. The first end of the belt 11 passes through the head roller 14, multiple sets of idler rollers 8, unloading device 12 and tail roller 4, and then passes through the bottom of the idler roller frame 8 and the head roller 14 before connecting to the tail end of the belt 11.

[0039] To improve usability and facilitate the movement of the roller assembly after filling, a second sliding device is provided between the lower part of the top beam of the hydraulic jack 1 and the connecting beam 9. This second sliding device includes multiple slide rails 28, a crossbeam 27, and pulleys 30. Each hydraulic jack 1 has a slide rail 28 fixed to its lower part of the top beam. The slide rail 28 has a concave structure. The crossbeam 27 is an I-beam, with its upper part fitted into the slide rail 28. Pulleys 30 are connected to both sides of the upper part of the crossbeam 27, allowing them to move within the slide rail 28. Multiple fixing seats 29 are fixed along the length of the crossbeam 27 at its lower part. Each fixing seat 29 is bolted to the crossbeam 27 at its upper part. A lifting ring is provided at the lower part of each fixing seat 29, and a connecting chain 7 is disposed within the lifting ring. The connecting beam 9 is connected to the fixing seat 29 via the connecting chain 7.

[0040] When in use, the backfill material such as gangue from the shaft material outlet is loaded onto the belt 11 at the head drum 14. The motor 15 is started, and the motor 15 drives the head drum 14 to rotate. The head drum 14 drives the belt 11 to move. The tail drum 4 rotates under the drive of the belt 11. The belt 11 transports the backfill material such as gangue. When the backfill material such as gangue is 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 continuously transported gangue and the forward movement of the belt 11, the baffle 19 of the unloading device 12 unloads the backfill material such as gangue into the backfilling face of the goaf that needs to be filled.

[0041] When belt 11 needs to be tensioned, hydraulic cylinder 17 pushes connecting seat 26 to move bracket 16 forward, and bracket 16 drives head roller 14 to move forward. The piston rod of hydraulic cylinder 26 drives slider 5 to move towards the end of connecting frame 3, causing tail roller 4 to move backward. That is, head roller 14 and tail roller 4 move belt 11 on both sides at the same time to achieve the effect of tensioning belt 11.

[0042] When the height of the baffle 19 needs to be adjusted, loosen the nut at the bottom of the sleeve 21, push the connector 24 downward to move the baffle 19 closer to the belt 11, adjust the distance, and then tighten the nut.

[0043] When it is necessary to adjust the angle of the baffle 19, loosen the bolts on the arc-shaped piece of the connector 24, rotate the connecting rod 20 so that the connecting rod 20 drives the baffle 19 to rotate, and after adjusting the angle, tighten the bolts on the arc-shaped piece of the connector 24.

[0044] When it is necessary to move the idler roller group 8, the connecting frame 3 or the connecting beam 9 can be pushed manually to move the upper crossbeam 27. The pulley 30 fixed on the crossbeam 27 moves in the slide rail 28 under the action of the thrust, which makes it easy to adjust the position of the idler roller group 8.

[0045] Example 2: The structure of Example 2 is basically the same as that of Example 1, and the similarities will not be repeated. The difference is that, for example... Figure 9 As shown in this embodiment, each set of idler rollers has a support plate 22 fixed between the idler roller frames 8, 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 goaf filling face. If the discharge device is not needed, the bolts on the upper arc-shaped piece of the connecting piece 24 can be loosened, the connecting rod 20 can be rotated, and the connecting rod 20 can drive the baffle 19 to rotate upward. When the baffle 19 is above the connecting rod 20, the bolts on the arc-shaped piece of the connecting piece 24 can be tightened.

[0046] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present invention should be included within the scope of the present invention.

Claims

1. A movable belt conveyor for filling and dumping, comprising a plurality of hydraulic jacks (1), a hanging connection device, a plurality of groups of carrier rollers (8) and a belt (11), the plurality of hydraulic jacks (1) being linearly and spacedly arranged in the goaf from the front to the back at the material outlet of the shaft; characterized in that, A support frame (13) is connected to the top beam of the hydraulic jack (1) located on the front side. A support frame (18) is connected to the lower part of the support frame (13). Tensioning devices are provided on both sides of the support frame (18). A machine 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 support frame (18). The motor is connected to the shaft of the machine head roller (14). Each pair of hydraulic jacks (1) is connected to a hanging connection device, and the lower part of the hanging connection device is connected to multiple roller groups; a support plate (22) is fixed on one of the roller groups, and a discharge device (12) is obliquely arranged on the upper part of the support plate (22); 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), and each column (23) is provided with an adjustment device. The two ends of the connecting rod (20) are connected to the adjustment device, and a baffle (19) is connected to the lower part of the connecting rod (20); the adjustment device includes a sleeve (2 1) and connector (24), the sleeve (21) is fixed on the column (23), and the sleeve (21) is provided with a spring (25); the upper part of the connector (24) is an arc-shaped piece, the upper part of the connector (24) is set on the top of the sleeve (21), and the upper part of the connector (24) is connected to the end of the connecting rod (20); the end of the connecting rod (20) is set in the arc-shaped piece, and the two ends of the arc-shaped piece are connected by bolts; the lower part of the connector (24) is columnar, and the lower part of the connector (24) is threaded; the lower part of the connector (24) passes through the spring (25) and the bottom of the sleeve (21) and is suspended, and the bottom of the connector (24) is connected with a nut; A support frame (2) is connected to the top beam of the hydraulic jack (1) at the tail end. A connecting frame (3) is connected to the lower part of the support frame (2). A tail roller (4) is installed inside the connecting frame (3). A first sliding device is installed on both sides of the connecting frame (3). The first sliding device is connected to the tail roller (4). The first end of the belt (11) passes through the head roller (14), multiple sets of idler rollers (8), unloading device (12) and tail roller (4), then passes through the lower part of multiple sets of idler rollers (8) and head roller (14), and is connected to the tail end of the belt (11).

2. The mobile belt conveyor for filling and ejection of dirt according to claim 1, characterized in that, The hanging connection device includes a connecting beam (9) and multiple connecting chains (7). Multiple connecting chains (7) are connected to both the upper and lower parts of the connecting beam (9). The connecting chains (7) on the upper part of the connecting beam (9) are connected to the top beam of the hydraulic jack (1), and the connecting chains (7) on the lower part of the connecting beam (9) are connected to the roller group.

3. A mobile belt conveyor for filling and ejection according to claim 2, characterized in that The second sliding device is arranged between the lower part of the hydraulic jack (1) and the connecting beam (9), and comprises a plurality of slide rails (28), a cross beam (27) and a pulley (30), the slide rails (28) are fixed to the lower part of the hydraulic jack (1), the upper part of the cross beam (27) is sleeved in the slide rails (28), the pulley (30) is arranged between the cross beam (27) and the slide rails (28), the pulley (30) is connected with the cross beam (27), a plurality of fixing bases (29) are fixed to the lower part of the cross beam (27) along the length direction of the cross beam (27), and the connecting beam (9) is connected with the fixing bases (29) through the connecting chain (7).

4. The mobile belt conveyor for filling and ejection of dirt according to claim 1, characterized in that, The tensioning device comprises two supports (16) and a hydraulic oil cylinder (17), the two supports are sleeved on the two sides of the front end of the support frame (18), the head cylinder (14) is arranged between the front ends of the two supports (16), the two supports (16) are each provided with a connecting seat (26), the hydraulic oil cylinder (17) is fixed to the two sides of the support frame (18), and the piston rod of the hydraulic oil cylinder (17) is connected with the connecting seat (26).

5. The mobile belt conveyor for filling and ejection of dirt according to claim 1, characterized in that, The first sliding device comprises a hydraulic oil cylinder (6) and a sliding block (5), the two sides of the connecting frame (3) are each provided with a slide channel, the sliding block (5) is arranged in the slide channel, and the tail cylinder (4) is connected with the middle part of the two sliding blocks (5); the hydraulic oil cylinder (6) is arranged in the middle part of the two sides of the connecting frame (3), and the piston rod of the hydraulic oil cylinder (6) is connected with the side part of the sliding block (5).

6. The portable belt conveyor for filling and ejection of dirt according to claim 1, characterized in that, The length direction side edge of the baffle (19) is at an angle with the length direction side edge of the belt (11), and the angle is 45°.

7. The mobile belt conveyor for filling and ejection of dirt according to claim 1, characterized in that, Each group of the supporting roller group is provided with a supporting plate (22), and the supporting plate (22) is provided with a discharging device (12).

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