Gangue filling hydraulic support

Abstract

The utility model discloses a gangue filling hydraulic support, including base and top support mechanism, and top support mechanism includes roof beam, is provided with support mechanism between base and roof beam, and support mechanism includes support stand and support connecting rod, and the rear end of roof beam is provided with rear roof beam, and is provided with inclined support column between rear roof beam and base, and is rotatably connected with extrusion spade board on rear roof beam, and is provided with extrusion jack between rear roof beam and extrusion spade board, and is rotatably provided with compacting board on base, and compacting board is located the just below of rear roof beam, and is provided with hydraulic drive connecting rod on compacting board and base, the gangue filling hydraulic support provided by the utility model can realize extrusion spade board and compacting board extruding gangue filling body in the upper and lower parts of mined-out area through the telescopic extrusion jack and hydraulic drive connecting rod, and continuously supplement gangue filling material to mined-out area side by scraper conveyor, so as to meet the gangue filling amount required for continuously pushing back, compacting gangue.

Description

Technical Field

[0001] This utility model relates to the field of backfill mining technology, and in particular to hydraulic supports for backfilling gangue. Background Technology

[0002] In my country, underground mining is the primary form of coal mining. Backfilling mining offers advantages such as increased coal recovery rates, full resource utilization, effective control of ground pressure, reduction or elimination of surface subsidence, and the ability to mine underground ("three-level" – underground mining, underground mining, and underground mining). Furthermore, the use of waste rock to fill goafs reduces the accumulation of gangue and other waste, minimizing environmental pollution and improving the surrounding ecological environment. Therefore, it is an important component of green coal mining. Based on these advantages, and given my country's current energy situation, backfilling mining is receiving increasing attention, and backfilling technology is constantly being innovated and developed through its modification and evolution.

[0003] Hydraulic supports for gangue backfilling are key equipment in integrated mechanized backfilling coal mining technology. They enable parallel operation of coal mining and backfilling within the same working face system, ensuring safe and efficient coal mining while also ensuring the implementation of various processes for dense backfilling of the goaf. However, currently, gangue is transported to the goaf using scraper conveyors and filled by the natural accumulation of gangue. Due to the limitations of the mechanical structure of the hydraulic supports in the height direction, a large gap remains between the goaf roof and the backfill material. The gangue backfill material cannot contact the roof, and the looseness coefficient of the gangue backfill material is high, resulting in unsatisfactory filling effect and significant ground subsidence. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulic support for gangue filling to address the aforementioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A hydraulic support for backfilling gangue includes a base and a top support mechanism. The top support mechanism includes a top beam and a support mechanism disposed between the base and the top beam. The support mechanism includes a support column and a support rod. The lower ends of the support column and the support rod are fixedly mounted on the base, and the upper ends of the support column and the support rod are connected to the top beam. A rear beam is provided at the rear end of the top beam. An inclined support column is provided between the rear beam and the base. A pressing shovel is rotatably connected to the rear beam. A pressing jack is provided between the rear beam and the pressing shovel. A compaction plate is rotatably provided on the base, located directly below the rear beam. A hydraulic drive link is provided on the compaction plate and the base.

[0007] In the aforementioned hydraulic support for backfilling gangue, the front end of the top beam is rotatably connected to a front beam, and a front beam jack is provided between the front beam and the top beam.

[0008] The aforementioned hydraulic support for backfilling gangue also includes a scraper conveyor, which is suspended on the rear beam and has a gangue leakage hole.

[0009] The aforementioned hydraulic support for backfilling gangue has a mounting base on the base and a rotating connecting shaft on the compaction plate, the rotating connecting shaft being rotatably mounted on the mounting base.

[0010] The aforementioned hydraulic support for backfilling gangue includes a compaction plate comprising a plate body and a telescopic pressure plate. An opening is provided on the side of the plate body away from the rotating connecting shaft, and the telescopic pressure plate is slidably connected in the opening.

[0011] The aforementioned hydraulic support for backfilling gangue includes a telescopic pressure plate comprising a moving pressure plate and a rotating pressure plate disposed at the rear end of the moving pressure plate. Sliding seats are respectively disposed on both sides of the moving pressure plate, and the sliding seats are slidably connected to the side wall of the opening.

[0012] In the aforementioned hydraulic support for backfilling gangue, a hydraulic drive rod is provided inside the opening, and the moving pressure plate is driven by the hydraulic drive rod to reciprocate along the opening.

[0013] The aforementioned hydraulic support for gangue filling also includes a pressure plate drive hydraulic rod, which is disposed between the moving pressure plate and the rotating pressure plate, and is used to drive the rotating pressure plate to rotate to adjust to a suitable angle.

[0014] In the above technical solution, the hydraulic support for gangue filling of this utility model includes a base and a top support mechanism. The top support mechanism includes a top beam, and a support mechanism is provided between the base and the top beam. The support mechanism includes a support column and a support connecting rod. A rear beam is provided at the rear end of the top beam, and an inclined support column is provided between the rear beam and the base. A pressing shovel plate is rotatably connected to the rear beam, and a pressing jack is provided between the rear beam and the pressing shovel plate. A compaction plate is rotatably provided on the base, located directly below the rear beam. A hydraulic drive connecting rod is provided on the compaction plate and the base. By extending and retracting the pressing jack and the hydraulic drive connecting rod, the pressing shovel plate and the compaction plate can compress the gangue filling material in the middle and lower parts of the goaf. At the same time, the scraper conveyor continuously replenishes gangue filling material to the goaf side to meet the amount of gangue filling required for continuous rearward pushing and compaction of gangue. When the central gangue filling body arches under the action of the compaction plate, the squeezing shovel is used to push and squeeze the gangue filling body at the top of the goaf. Under the combined local and overall squeezing action of the squeezing shovel and the compaction plate, the filling density of gangue in the goaf can be improved, and the gangue can achieve a good roof connection effect in the goaf, thereby enhancing the support strength of the gangue filling body for the roof of the goaf. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 A schematic diagram of the structure of the hydraulic support for gangue filling provided in an embodiment of this utility model;

[0017] Figure 2 This is one of the structural schematic diagrams of the telescopic pressure plate provided in the embodiments of this utility model;

[0018] Figure 3 This is the second structural schematic diagram of the telescopic pressure plate provided in the embodiment of this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Base; 10. Mounting seat; 2. Top support mechanism; 20. Top beam; 21. Front beam; 22. Front beam jack; 23. Rear beam; 24. Inclined support column; 25. Extrusion shovel plate; 26. Extrusion jack; 3. Support mechanism; 30. Support column; 31. Support connecting rod; 4. Scraper conveyor; 5. Compactor plate; 50. Rotating connecting shaft; 51. Plate body; 52. Telescopic pressure plate; 53. Moving pressure plate; 530. Sliding seat; 531. Rotating mounting rod; 54. Rotating pressure plate; 55. Hydraulic drive rod; 56. Pressure plate drive hydraulic rod; 57. Rotating connecting plate; 6. Hydraulic drive connecting rod. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1-3 As shown, this utility model provides a hydraulic support for gangue filling, including a base 1 and a top support mechanism 2. The top support mechanism 2 includes a top beam 20, which supports the top of the working face. A support mechanism 3 is provided between the base 1 and the top beam 20 to provide stable support for the top beam 20. The support mechanism 3 includes support columns 30 and support connecting rods 31. There are four support columns 30, which are respectively and spaced apart between the base 1 and the top beam 20. The bottom of the support column 30 is fixed to the base 1, and the top of the support column 30 is fixedly connected to the top beam 20. The support column 30 adopts a hydraulic telescopic support rod, which can drive the top beam 20 to adjust the height of the top beam 20 and form support. The support link 31 is set between the base 1 and the top beam 20. The top of the support link 31 is connected to the top beam 20, and the bottom of the support link 31 is connected to the base 1. When the hydraulic cylinder of the hydraulic telescopic support rod extends or retracts, the support link 31 rises or falls accordingly, playing a role in stabilizing the support.

[0023] In this embodiment, the top beam 20 is located directly above the base 1. The rear end of the front beam 21 is hinged to the front end of the top beam 20. A front beam jack 22 is provided at the front end of the top beam 20. Both ends of the front beam jack 22 are hinged to the lower sides of the front beam 21 and the top beam 20, respectively. When the front beam jack 22 extends or retracts, it can drive the front beam 21 to unfold or retract. The front beam 21 includes a connecting beam arranged in sequence and a support plate arranged on the connecting beam. The support plate and the connecting beam form an obtuse angle structure.

[0024] A rear beam 23 is provided at the rear end of the top beam 20. The front end of the rear beam 23 is hinged to the rear end of the top beam 20. An inclined support column 24 is provided between the rear beam 23 and the base 1. The inclined support column 24 has the same structure as the support column 30. The rear beam 23 can be driven by the extension and retraction of the hydraulic cylinder of the inclined support column 24, so that the rear beam 23 can move to a suitable angle. During the backfilling process, the rear beam 23 remains parallel to the top beam 20. A scraper conveyor 4 is suspended on the rear beam 23. The scraper conveyor 4 has a gangue leakage hole, so that the gangue can be transported by the scraper conveyor 4.

[0025] In this embodiment, a pressing shovel plate 25 is provided at the rear end of the rear beam 23. The front end of the pressing shovel plate 25 is hinged to the rear end of the rear beam 23. A pressing jack 26 is provided at the rear end of the rear beam 23. The two ends of the pressing jack 26 are respectively hinged to the lower side of the rear beam 23 and the lower side of the pressing shovel plate 25. When the pressing jack 26 extends or retracts, it can drive the pressing shovel plate 25 to unfold or retract. In this way, during use, the pressing shovel plate 25 can push and press the gangue filling body at the top of the goaf.

[0026] In this embodiment, a compaction plate 5 is provided at the rear end of the base 1, and a mounting base 10 is provided on the base 1. A rotating connecting shaft 50 is provided on the compaction plate 5, and the rotating connecting shaft 50 is rotatably mounted on the mounting base 10. Thus, the compaction plate 5 can rotate around the rotating connecting shaft 50 as the axis. A hydraulic drive connecting rod 6 is provided on the compaction plate 5 and the base 1. One end of the hydraulic drive connecting rod 6 is connected to the base 1, and the other end is connected to the compaction plate 5. Thus, the hydraulic drive connecting rod 6 can drive the compaction plate 5, so that the compaction plate 5 can rotate.

[0027] In this embodiment, the compaction plate 5 includes a plate body 51 and a telescopic pressure plate 52. A rotating connecting shaft 50 is located at the end of the plate body 51 away from the telescopic pressure plate 52. An opening is provided on the side of the plate body 51 away from the rotating connecting shaft 50. The telescopic pressure plate 52 is slidably connected in the opening. A hydraulic drive rod 55 is provided on the telescopic pressure plate 52. One end of the hydraulic drive rod 55 is fixedly installed in the opening, and the other end of the hydraulic drive rod 55 is connected to the telescopic pressure plate 52. Thus, the telescopic pressure plate 52 can be driven by the hydraulic drive rod 55, thereby causing the telescopic pressure plate 52 to move along the opening. This allows the telescopic pressure plate 52 to be retracted into the opening or gradually extended out of the opening.

[0028] The telescopic pressure plate 52 includes a moving pressure plate 53 and a rotating pressure plate 54 disposed at the rear end of the moving pressure plate 53. Sliding seats 530 are respectively disposed on both sides of the moving pressure plate 53. The sliding seats 530 are slidably connected to the side wall of the opening. A hydraulic connecting seat is disposed on the moving pressure plate 53. The other end of the hydraulic drive rod 55 is connected to the hydraulic connecting seat. There are two hydraulic drive rods 55 and two hydraulic connecting seats. The two hydraulic drive rods 55 are arranged in parallel.

[0029] In this embodiment, a rotating mounting rod 531 is provided at the end of the moving pressure plate 53 away from the rotating connecting shaft 50. A triangular rotating connecting plate 57 is provided on the rotating pressure plate 54. There are two triangular rotating connecting plates 57, which are located on opposite sides of the rotating pressure plate 54. The first corner of the rotating connecting plate 57 is fixedly connected to the rotating pressure plate 54, and the second corner of the rotating connecting plate 57 is fixedly connected to the rotating mounting rod 531. A driving connecting shaft is provided at the third triangular part of the rotating connecting plate 57. A pressure plate driving liquid rod 56 is provided on the moving pressure plate 53. The driving end of the pressure plate driving liquid rod 56 is connected to the driving connecting shaft. There are two pressure plate driving liquid rods 56, which drive the two triangular connecting plates respectively, thereby enabling the rotating pressure plate 54 to rotate.

[0030] During use, when it is necessary to compact the gangue using the telescopic pressure plate 52, the telescopic pressure plate 52 is driven by the hydraulic drive rod 55, causing it to move along the opening. The telescopic pressure plate 52 gradually extends out of the opening, and then the pressure plate drive hydraulic rod 56 drives the rotating pressure plate 54, allowing it to rotate. The overall angle of the plate body 51 can be adjusted via the hydraulic drive linkage 6, while the pressure plate drive hydraulic rod 56 can adjust the angle of the rotating pressure plate 54, improving the compaction effect of the compaction plate 5 on the gangue. Simultaneously, the extrusion shovel 25 and the compaction plate 5 work together to enhance the pushing, filling, and compaction of the gangue.

[0031] The extension and retraction of the compression jack 26, hydraulic drive linkage 6, and hydraulic drive rod 55 enable the compression of the gangue filling material in the middle and lower parts of the goaf by the compression shovel 25 and compaction plate 5. Simultaneously, the scraper conveyor 4 continuously replenishes gangue filling material to the goaf side to meet the required amount of gangue filling material for continuous backward movement and compaction. When the middle gangue filling material arches under the action of the compaction plate 5, the compression shovel 25 is used to push and compress the gangue filling material at the top of the goaf. The compression shovel 25 can have a certain inclination angle, which can further improve the roof connection effect of the top gangue filling material. Under the combined local and overall compression action of the compression shovel 25 and compaction plate 5, both the filling density of gangue in the goaf can be improved, and a good roof connection effect of gangue in the goaf can be achieved, enhancing the support strength of the gangue filling material for the goaf roof.

[0032] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A hydraulic support for backfilling gangue, comprising a base (1) and a top support mechanism (2), wherein the top support mechanism (2) includes a top beam (20), characterized in that, It also includes a support mechanism (3) disposed between the base (1) and the top beam (20). The support mechanism (3) includes a support column (30) and a support connecting rod (31). The lower ends of the support column (30) and the support connecting rod (31) are fixedly installed on the base (1). The upper ends of the support column (30) and the support connecting rod (31) are connected to the top beam (20). A rear beam (23) is provided at the rear end of the top beam (20). An inclined support column (24) is provided between the rear beam (23) and the base (1). An extrusion shovel plate (25) is rotatably connected to the rear beam (23). An extrusion jack (26) is provided between the rear beam (23) and the extrusion shovel plate (25). A compaction plate (5) is rotatably provided on the base (1). The compaction plate (5) is located directly below the rear beam (23). A hydraulic drive linkage (6) is provided on the compaction plate (5) and the base (1).

2. The hydraulic support for gangue filling according to claim 1, characterized in that, The front end of the top beam (20) is rotatably connected to the front beam (21), and a front beam jack (22) is provided between the front beam (21) and the top beam (20).

3. The hydraulic support for gangue filling according to claim 1, characterized in that, It also includes a scraper conveyor (4), which is suspended on the rear beam (23) and has a waste rock leakage hole.

4. The hydraulic support for gangue filling according to claim 1, characterized in that, The base (1) is provided with a mounting seat (10), and the compaction plate (5) is provided with a rotating connecting shaft (50), which is rotatably mounted on the mounting seat (10).

5. The hydraulic support for gangue filling according to claim 4, characterized in that, The compaction plate (5) includes a plate body (51) and a telescopic pressure plate (52). An opening is provided on the side of the plate body (51) away from the rotating connecting shaft (50), and the telescopic pressure plate (52) is slidably connected in the opening.

6. The hydraulic support for gangue filling according to claim 5, characterized in that, The telescopic pressure plate (52) includes a moving pressure plate (53) and a rotating pressure plate (54) disposed at the rear end of the moving pressure plate (53). Sliding seats (530) are respectively provided on both sides of the moving pressure plate (53), and the sliding seats (530) are slidably connected to the side wall of the opening.

7. The hydraulic support for gangue filling according to claim 6, characterized in that, A hydraulic drive rod (55) is provided inside the opening, and the moving pressure plate (53) is driven by the hydraulic drive rod (55) and can reciprocate along the opening.

8. The hydraulic support for gangue filling according to claim 7, characterized in that, It also includes a pressure plate drive hydraulic rod (56), which is disposed between the moving pressure plate (53) and the rotating pressure plate (54) for driving the rotating pressure plate (54) to rotate to adjust to a suitable angle.

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