A hydraulic support for the end of a lane retaining device in a paste-filled working face

Abstract

The present application relates to the technical field of paste filling hydraulic supports, and in particular to a hydraulic support for the end of a paste filling working face lane, comprising: a side baffle arranged on the outside of the end hydraulic support; two ends of a pull rod A are respectively connected to the end hydraulic support and the side baffle in a hinged structure; two ends of a pull rod B are respectively connected to the end hydraulic support and the side baffle in a hinged structure, and form a four-bar linkage with the pull rod A; one end of an adjusting cylinder is hingedly connected to the end hydraulic support, and the other end is hingedly connected to the pull rod A, for driving the side baffle to extend or retract; a four-bar linkage is formed by the pull rods A and B, which can push the side baffle out a certain distance to cooperate with the working face filling hydraulic support to seal the area to be filled, without adjusting the side baffle by adjusting the end hydraulic support, thereby improving the sealing efficiency and ensuring the sealing performance of the sealing to prevent leakage.

Description

Technical field:

[0002] The present application relates to the technical field of paste-filled hydraulic supports, and in particular to a hydraulic support for a lane end of a paste-filled working face. Background technology:

[0004] Paste filling technology, the result of breakthroughs in key filling equipment and the combined development of underground mining needs, has been rapidly adopted in my country. Paste filling is a coal mining technique that fills goaf with gangue, fly ash, construction waste, and specialized paste filling materials as the mining face advances.

[0005] The end hydraulic support is used to maintain the roof of the roadway at the end of the coal mining face. It is usually used in conjunction with the working face filling hydraulic support to ensure sufficient column-free space at the end of the working face for pushing the tail of the transfer machine and the head of the conveyor, and also to prevent the working face support from tilting.

[0006] The national invention patent application with application number 201110294604.8 - transition hydraulic support for gob-side tunnel retention: includes a front shielding support, a rear shielding support and a pulling frame jack, one end of the pulling frame jack is hinged to the rear end of the base of the front shielding support, and the other end is hinged to the front end of the base of the rear shielding support; the hydraulic support also includes a telescopic beam mechanism, the telescopic beam mechanism includes an outer telescopic beam and an inner telescopic beam, and the lower ends of the outer telescopic beam and the inner telescopic beam are respectively provided with baffles; the rear end of the top beam of the front shielding support is hinged to the outer telescopic beam, and the front end of the top beam of the rear shielding support is hinged to the inner telescopic beam.

[0007] This patent application has a hinged baffle on one side of the hydraulic support, which completely seals the inside of the old pond. The main purpose is to prevent the gangue that collapses behind the hydraulic support on the working face from flowing into the retained laneway, thereby better protecting the laneway. However, this technical solution cannot be used for paste-filled working faces because the paste is fluid and requires high sealing properties. The end hydraulic support is located a certain distance from the working face filling hydraulic support, resulting in poor sealing and leakage. The position of the end hydraulic support needs to be adjusted multiple times, which is time-consuming and labor-intensive and cannot meet the needs of actual construction. Summary of the invention:

[0009] To solve the above technical problems, the present invention provides a hydraulic support for the end of a lane retaining device for a paste-filled working face. The technical problem to be solved is that, with paste-filling technology, the sealing effect between the end hydraulic support and the working face filling hydraulic support is poor and cannot meet the requirements of paste filling. To solve the above technical problems, the technical solution adopted by the present invention is:

[0010] A hydraulic support for a lane retaining end of a paste-filled working face, comprising:

[0011] Side baffles and end hydraulic supports, with the side baffles being arranged on the outside of the end hydraulic supports;

[0012] Tie rod A, both ends of which are respectively connected to the end hydraulic support and the side baffle in a hinged structure;

[0013] Tie rod B, both ends of which are respectively connected to the end hydraulic support and the side baffle in a hinged structure, and form a four-bar linkage with tie rod A;

[0014] Adjusting cylinder: one end of the adjusting cylinder is hingedly connected to the end hydraulic support, and the other end is hingedly connected to the pull rod A, which is used to drive the side baffle to extend or retract.

[0015] Furthermore, the pull rod B is a hydraulic cylinder.

[0016] Furthermore, a mesh is provided on the outer surface of the side baffle; and a driving part is provided on the inner side of the side baffle for driving the mesh to move back and forth towards and away from the side baffle.

[0017] Furthermore, the side baffle includes a fixed plate, an upper baffle and a lower baffle, the fixed plate is hingedly connected to the pull rod A and the pull rod B, and the upper baffle and the lower baffle are connected to the fixed plate in a vertical sliding structure;

[0018] A driving cylinder for driving the upper baffle and the lower baffle to slide is provided on the fixed plate in a hinged structure;

[0019] The mesh includes steel mesh A, steel mesh B and steel mesh C. Steel mesh A can move simultaneously with the upper baffle, and steel mesh C can move simultaneously with the lower baffle;

[0020] Steel mesh B is set on the outside of the fixed plate, and an L-shaped slide is fixed on the inside for steel mesh A and steel mesh C to slide. The L-shaped slide is fixed by several steel bars.

[0021] A guide portion is provided on the inner side of the fixing plate.

[0022] Furthermore, the horizontal cross-section of the fixed plate is arranged in a rectangular structure, and the upper baffle and the lower baffle can slide inside the fixed plate.

[0023] Furthermore, rubber strips are provided on the upper end surface of the upper baffle and the lower end surface of the lower baffle.

[0024] Furthermore, the guide portion includes a sleeve fixedly arranged on the inner side of the side baffle, an end cover is fixedly arranged on the side of the sleeve away from the side baffle, a pressure block is arranged in the sleeve in a sliding structure, and a spring is arranged between the pressure block and the end cover;

[0025] A first connecting column is fixedly provided on the steel mesh B, and one end of the first connecting column passes through the fixing plate and enters the sleeve.

[0026] Furthermore, the driving part includes a cylinder fixedly arranged on the inner side of the side baffle and a shell sleeved on the outer side of the cylinder, wherein an impact block, an annular limit baffle, a gravity block and a piston are sequentially arranged in the cylinder from left to right, the annular limit baffle is connected to the cylinder in a fixed structure, the impact block, the gravity block and the piston are all connected to the cylinder in a sliding structure, one end of the impact block can pass through the annular limit baffle, the piston is provided with a driving rod in a hinged structure, the other end of the driving rod is provided with a crankshaft in a hinged structure, the crankshaft is connected to the shell in a rotating structure, and a rotary motor for driving the crankshaft to rotate is fixedly arranged on the outside of the shell;

[0027] The driving part also includes a second connecting column, one end of which is connected to the mesh, and the other end of which passes through the side baffle and enters the cylinder.

[0028] Furthermore, sealing rings are provided on the outer peripheral wall of the gravity block and the outer peripheral wall of the piston.

[0029] The beneficial effect of the present invention is that a four-bar linkage is formed by pull rod A and pull rod B, which can push the side baffle out a certain distance to cooperate with the working surface filling hydraulic support to seal the filling area. There is no need to adjust the side baffle by adjusting the end hydraulic support, which not only improves the sealing efficiency, but also ensures the sealing performance and prevents leakage.

[0030] By setting the pull rod B as a hydraulic cylinder, the opening and closing angles of the side baffle and the end hydraulic support can be adjusted to meet the needs of different inclined grounds in the tunnel.

[0031] The mesh is driven to move back and forth by the driving unit, which can vibrate the gangue and other fillers before pouring the paste, and the side baffles can give the filler a compaction force by cooperating with the four-bar mechanism, making the penetration stronger, expanding the vibration area, and ensuring the density of various particle grades of fillers in the surrounding area; when pouring the paste, the whole is vibrated to prevent the generation of bubbles at the end and improve the filling strength. The mesh serves as the skeleton of the paste filling end to prevent the stress caused by temperature changes and paste shrinkage, which may cause cracks. Description of the drawings:

[0033] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0034] Figure 2 It is a schematic diagram of the explosion structure of the side baffle of the present invention.

[0035] Figure 3 It is a schematic diagram of the exploded cross-section structure of the driving part of the present invention.

[0036] Figure 4 It is a schematic diagram of the cross-sectional structure of the guide portion of the present invention.

[0037] Figure 5 It is a schematic structural diagram of an embodiment of the present invention.

[0038] In the picture:

[0039] 1. Mesh, 11. Steel mesh B, 12. Steel mesh A, 13. Steel mesh C, 2. Side baffle, 21. Fixed plate, 22. Upper baffle, 23. Lower baffle, 24. Driving cylinder, 3. Pull rod A, 4. Pull rod B, 5. Adjusting cylinder, 6. Driving part, 61. Cylinder, 62. Housing, 63. Impact block, 64. Annular limit baffle, 65. Gravity block, 66. Piston, 67. Driving rod, 68. Crankshaft, 69. Second connecting column, 7. Guide part, 71. Sleeve, 72. End cover, 73. Pressing block, 74. First connecting column, 8. L-shaped slide, 9. End hydraulic support, 10. Rubber strip, 14. Working surface filling hydraulic support, 15. Area to be filled, 16. Filled area, 17. Tunnel. Specific implementation method:

[0041] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will now be further described in detail with reference to the accompanying drawings and the following examples so that the public can better understand the implementation method of the present invention. The specific implementation scheme of the present invention is as follows:

[0042] A hydraulic support for the end of a paste filling working face retaining lane comprises: a side baffle 2, an end hydraulic support 9, a pull rod A3 and a pull rod B4, wherein the side baffle 2 is arranged on the outside of the end hydraulic support 9; the two ends of the pull rod A3 are respectively connected to the end hydraulic support 9 and the side baffle 2 in a hinged structure; the two ends of the pull rod B4 are respectively connected to the end hydraulic support 9 and the side baffle 2 in a hinged structure, and form a four-bar linkage with the pull rod A3; the four-bar linkage is formed by the pull rods A and B, which can push the side baffle out a certain distance to cooperate with the working face filling hydraulic support to seal the area to be filled, without adjusting the side baffle by adjusting the end hydraulic support, thereby improving the sealing efficiency and ensuring the sealing performance to prevent leakage.

[0043] It should be noted that the pull rod B4 is a hydraulic cylinder, which can adjust the opening and closing angles of the side baffle 2 and the end hydraulic support 9 to meet the needs of different inclined ground in the tunnel and ensure the verticality of the side baffle 2.

[0044] Furthermore, a mesh 1 is provided on the outer surface of the side baffle 2. After filling, the mesh 1 serves as a skeleton of the paste filling end to prevent cracks from being caused by stress generated by temperature changes and paste shrinkage.

[0045] Specifically, the side baffle 2 includes a fixed plate 21, an upper baffle 22 and a lower baffle 23. The fixed plate 21 is hingedly connected to the pull rod A3 and the pull rod B4. The horizontal cross-section of the fixed plate 21 is a rectangular structure. The upper baffle 22 and the lower baffle 23 can slide inside the fixed plate 21; a driving cylinder 24 for driving the upper baffle 22 and the lower baffle 23 to slide is provided on the fixed plate 21 in a hinged structure; the upper baffle 22 and the lower baffle 23 are pushed out by the ejection of the driving cylinder 24, so that the upper and lower ends are supported to the top and bottom of the tunnel to complete the sealing work, and further, the upper end face of the upper baffle 22 and the lower end face of the lower baffle 23 are provided with rubber strips 10. The soft rubber strips 10 fit the uneven tunnel, which has better sealing and prevents leakage.

[0046] Specifically, the mesh 1 includes steel mesh A12, steel mesh B11 and steel mesh C13. The steel mesh A12 can move simultaneously with the upper baffle 22, and the steel mesh C13 can move simultaneously with the lower baffle 23; the steel mesh B11 is arranged on the outside of the fixed plate 21, and an L-shaped slide 8 is fixed on its inner side for the steel mesh A12 and the steel mesh C13 to slide. The L-shaped slide 8 is composed of several fixed steel bars to increase the grip of the paste.

[0047] A guide portion 7 is provided on the inner side of the fixing plate 21 ; a driving portion 6 for driving the mesh 1 to move toward and away from the side baffle 2 is provided on the inner side of the side baffle 2 .

[0048] Specifically, the guide portion 7 includes a sleeve 71 fixedly mounted on the inner side of the side guard 2. An end cap 72 is fixedly mounted on the side of the sleeve 71 away from the side guard 2. A pressure block 73 is provided in a sliding structure within the sleeve 71, with a spring provided between the pressure block 73 and the end cap 72. A first connecting post 74 is fixedly mounted on the steel mesh B11, one end of which passes through the fixed plate 21 and enters the sleeve 71. The guide portion 7 not only serves as a guide but also provides a thrust to the first connecting post 74, reducing the pressure on the drive unit 6 and increasing its service life.

[0049] Specifically, the driving part 6 includes a cylinder 61 fixedly arranged on the inner side of the side baffle 2 and a shell 62 sleeved on the outer side of the cylinder 61. The cylinder 61 is provided with an impact block 63, an annular limit baffle 64, a gravity block 65 and a piston 66 from left to right. The annular limit baffle 64 is connected to the cylinder 61 in a fixed structure. The impact block 63, the gravity block 65 and the piston 66 are all connected to the cylinder 61 in a sliding structure. One end of the impact block 63 can pass through the annular limit baffle 64. The piston 66 is provided with a driving rod 67 in an articulated structure. The other end of the driving rod 67 is provided with a crankshaft 68 in an articulated structure. The crankshaft 68 is connected to the shell 62 in a rotating structure. A rotary motor for driving the crankshaft 68 to rotate is fixedly provided on the outside of the shell 62. The driving part 6 also includes a second connecting column 69. One end of the second connecting column 69 is connected to the mesh 1, and the other end passes through the side baffle 2 and enters the cylinder 61. Figure 2 As shown, two vibrating parts 6 are located in the middle of the fixed plate, or one can be set in the middle. Two vibrating parts 6 are located on both sides of the upper part of the upper baffle 22, and two vibrating parts 6 are located on both sides of the lower part of the lower baffle 23. This design can maximize the reciprocating motion of the mesh 1 and vibrate the filler while meeting economic efficiency. The mesh is pushed by the driving part 6 to vibrate the filler, increasing density and strength. It can also cooperate with the four-bar linkage to compact the aggregate, making the penetration stronger, expanding the vibration area, and ensuring the density of various particle grades of the surrounding fillers.

[0050] It should be noted that the outer peripheral walls of the gravity block 65 and the piston 66 are both provided with sealing rings.

[0051] The regulating cylinder 5 has one end hingedly connected to the end hydraulic support 9 and the other end hingedly connected to the pull rod A3, and is used to drive the side baffle 2 to extend or retract.

[0052] The working principle and working process of the present invention are as follows: start the end hydraulic support 9 in the tunnel, and drive the rear support to move to the predetermined position through the front support of the end hydraulic support 9, start the adjusting cylinder 5 to push out the fixed plate 21 through the four-bar linkage mechanism of the pull rod A3 and the pull rod B4, and adjust the verticality of the fixed plate 21 through the hydraulic cylinder 4; and push the upper baffle 22 and the lower baffle 23 out by driving the cylinder 24, close to the upper and lower end faces of the tunnel.

[0053] At this time, aggregate is filled into the area to be filled 15, and the side baffle 2 is slowly pushed outward by the hydraulic cylinder 4, and the angle of the side baffle 2 is adjusted by the hydraulic cylinder 4 to ensure its verticality; the rotary motor is started to drive the crankshaft 68 to rotate, and the crankshaft 68 drives the piston 66 to reciprocate in the cylinder 61 through the drive rod 67. The piston 66 compresses the air to drive the gravity block 65 to hit the impact block 63, and the impact block 63 hits the second connecting column 69 to drive the mesh 1 to move outward, and the mesh 1 moves inward due to the pressure of the aggregate, driving the second connecting column 69 to hit the outer end surface of the impact block 63, and then reciprocating back and forth.

[0054] The steel mesh B11 is subjected to the pressure of the aggregate, driving the first connecting column 74 to contact the pressure block 73. The pressure block 73 compresses the spring. When the steel mesh B11 moves outward, the spring releases the pressure, giving the first connecting column 74 an outward thrust, and the process repeats. After the aggregate is filled, the vibration and the inward push of the side baffle 2 stop. The drive cylinder 24 is activated to press the rubber strip 10 against the upper and lower end surfaces of the roadway through the upper baffle 22 and lower baffle 23. The hydraulic support 14 is pressed against the side of the side baffle 2 to fill the adjacent working surface.

[0055] When filling the paste material, the vibration stops after a period of time. After the filling material solidifies, the adjusting cylinder 5 is started to retract the side baffle 2 through the four-bar mechanism, and the end hydraulic support 9 is moved. At this time, the mesh 1, and part of the first connecting column 74 and the second connecting column 69 are poured into the filling paste to protect the end.

[0056] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "front", "back", "lower left", "upper right", "outer", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Although the present invention has been described according to a limited number of embodiments, those skilled in the art, with the benefit of the above description, should understand that other embodiments are conceivable within the scope of the invention described herein.

Claims

1. A hydraulic support for the end of a lane retaining device on a paste-filled working surface, characterized in that: include: A side baffle (2) and an end hydraulic support (9), wherein the side baffle (2) is arranged outside the end hydraulic support (9), and a mesh (1) is arranged on the outer surface of the side baffle (2); a driving portion (6) for driving the mesh (1) to move toward and away from the side baffle (2) is arranged on the inner side of the side baffle (2); the side baffle (2) includes a fixed plate (21), an upper baffle (22) and a lower baffle (23); the fixed plate (21) is hingedly connected to the pull rod A (3) and the pull rod B (4); the upper baffle (22) and the lower baffle (23) are both connected to the fixed plate (21) in a vertical sliding structure; A driving cylinder (24) for driving the upper baffle (22) and the lower baffle (23) to slide is provided on the fixed plate (21) in a hinged structure; The mesh (1) includes a steel mesh A (12), a steel mesh B (11), and a steel mesh C (13), wherein the steel mesh A (12) can move simultaneously with the upper baffle (22), and the steel mesh C (13) can move simultaneously with the lower baffle (23); The steel mesh B (11) is arranged on the outside of the fixed plate (21), and an L-shaped slideway (8) for sliding the steel mesh A (12) and the steel mesh C (13) is fixed on the inside thereof, and the L-shaped slideway (8) is fixed by a plurality of steel bars; A guide portion (7) is provided on the inner side of the fixing plate (21); A pull rod A (3), both ends of which are respectively connected to the end hydraulic support (9) and the side baffle (2) in a hinged structure; Pull rod B (4), both ends of pull rod B (4) are respectively connected to the end hydraulic support (9) and the side baffle (2) in a hinged structure, and form a four-bar linkage with pull rod A (3); An adjusting oil cylinder (5) is hingedly connected at one end to the end hydraulic support (9) and hingedly connected at the other end to the pull rod A (3) for driving the side baffle (2) to extend or retract.

2. A hydraulic support for a lane retaining end of a paste-filled working surface according to claim 1, characterized in that: The pull rod B (4) is a hydraulic cylinder.

3. The hydraulic support for the lane retaining end of a paste-filled working face according to claim 1, characterized in that: The fixed plate (21) has a horizontal cross-section in a rectangular structure, and the upper baffle (22) and the lower baffle (23) are capable of sliding inside the fixed plate (21).

4. The hydraulic support for the end of a lane retaining in a paste-filled working face according to claim 1, characterized in that: The upper end surface of the upper baffle (22) and the lower end surface of the lower baffle (23) are both provided with rubber strips (10).

5. The hydraulic support for the end of a lane retaining in a paste-filled working face according to claim 1, characterized in that: The guide portion (7) includes a sleeve (71) fixedly arranged on the inner side of the side baffle (2), an end cover (72) fixedly arranged on the side of the sleeve (71) away from the side baffle (2), a pressure block (73) is arranged in a sliding structure in the sleeve (71), and a spring is arranged between the pressure block (73) and the end cover (72); A first connecting column (74) is fixedly provided on the steel mesh B (11), and one end of the first connecting column (74) passes through the fixing plate (21) and enters the sleeve (71).

6. The hydraulic support for the lane retaining end of a paste-filled working face according to claim 1, characterized in that: The driving part (6) includes a cylinder (61) fixedly arranged on the inner side of the side baffle (2) and a shell (62) sleeved on the outer side of the cylinder (61). An impact block (63), an annular limit baffle (64), a gravity block (65) and a piston (66) are sequentially arranged in the cylinder (61) from left to right. The annular limit baffle (64) is connected to the cylinder (61) in a fixed structure. The impact block (63), the gravity block (65) and the piston (66) are all connected to the cylinder (61) in a sliding structure. One end of the impact block (63) can pass through the annular limit baffle (64). The piston (66) is provided with a driving rod (67) in a hinged structure. The other end of the driving rod (67) is provided with a crankshaft (68) in a hinged structure. The crankshaft (68) is connected to the shell (62) in a rotating structure. A rotary motor for driving the crankshaft (68) to rotate is fixedly arranged outside the shell (62). The driving part (6) further comprises a second connecting column (69), one end of which is connected to the mesh (1), and the other end of which passes through the side baffle (2) and enters the cylinder (61).

7. A hydraulic support for a lane retaining end of a paste-filled working surface according to claim 6, characterized in that: The outer peripheral wall of the gravity block (65) and the outer peripheral wall of the piston (66) are both provided with sealing rings.

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