Light support device for steeply inclined thin coal seam

Abstract

The utility model provides a kind of light supporting device for steeply inclined thin coal seam belongs to coal mining technical field, the light supporting device for steeply inclined thin coal seam includes side support frame in both sides, light supporting assembly is set between side support frame, light supporting assembly includes supporting bottom plate and supporting net in both sides, one side of supporting net is connected with steel chain, another side is connected with steel chain, electric winch is set on side support frame, one end of steel chain is connected with supporting net, and the other end is fixedly connected with the reel of electric winch by ring buckle;Side support frame includes stand, crossbeam and inclined strut, trapezoidal bottom plate is set in the bottom of stand, crossbeam is fixedly connected with stand by bolt, one end of inclined strut is connected with stand, and the other end is connected with bottom plate;Multiple groups of sliding slots are set on crossbeam, pulley is rotatably set in sliding slot, steel chain is wound around pulley;The utility model can solve the problem that dynamic support demand cannot be met.

Description

Technical Field

[0001] This utility model belongs to the field of coal mining technology, specifically, it relates to a lightweight support device for steeply inclined thin coal seams. Background Technology

[0002] Steeply inclined thin coal seams, with dip angles greater than 45° and complex geological conditions, present numerous challenges to mining operations. Traditional timber supports have limited strength and struggle to provide sustained and stable support under complex geological conditions, easily leading to deformation and breakage, thus increasing the risk of roof collapse. While trapezoidal metal supports offer improved strength, their relatively fixed structural design makes them inflexible in steeply inclined thin coal seams, unable to adapt to frequent changes in seam thickness and dip angle. When seam conditions change, different support specifications often need to be replaced, wasting time and manpower and increasing mining costs. Rock bolt supports also have drawbacks in steeply inclined thin coal seams. Due to the looseness of the seam, the anchoring force of the bolts is difficult to effectively exert, failing to firmly connect the unstable coal and rock mass with the stable rock mass. Furthermore, in environments with large dip angles, the shear force on the bolts increases, easily leading to bolt failure or pull-out, significantly reducing the support effectiveness. Therefore, flexible support construction is more stable and reasonable.

[0003] Existing support structures are extremely inconvenient for workers to operate in narrow, inclined working spaces, resulting in low installation efficiency and severely impacting mining progress. Furthermore, most support structures have poor adjustability; once installed, they are difficult to adjust according to actual conditions such as coal seam changes and roadway deformation during mining, failing to meet dynamic support requirements. Utility Model Content

[0004] In view of this, the present invention provides a lightweight support device for steeply inclined thin coal seams, which can solve the problem of not being able to meet the requirements of dynamic support.

[0005] This utility model is implemented as follows:

[0006] This utility model provides a lightweight support device for steeply inclined thin coal seams, including side support frames on both sides, wherein a lightweight support assembly is arranged between the side support frames. The lightweight support assembly includes a support base plate and support nets on both sides. One side of the support net is connected to a steel chain, and the other side is connected to a steel chain. An electric winch is arranged on the side support frame. One end of the steel chain is connected to the support net, and the other end is fixedly connected to the drum of the electric winch through a ring buckle.

[0007] The technical advantages of the lightweight support device for steeply inclined thin coal seams provided by this utility model are as follows: By designing lightweight support components, it is better able to cope with unevenness and greater pressure compared with traditional plate support structures, reducing the risk of collapse; by using an electric winch in conjunction with a steel chain to adjust the tension of the support mesh, it changes the situation where traditional support structures are difficult to adjust flexibly according to inclined coal seams, further increases the contact area with the coal seam, can better adapt to the dynamic changes in coal seam thickness and pressure, and improves the stability of the support.

[0008] Based on the above technical solution, the lightweight support device for steeply inclined thin coal seams of this utility model can be further improved as follows:

[0009] The side support frame includes columns, beams and diagonal braces. The bottom of the columns is equipped with a trapezoidal base plate. The beams are fixed to the columns with bolts. One end of the diagonal brace is connected to the column and the other end is connected to the base plate.

[0010] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the support structure is composed of columns, beams and diagonal braces, and lightweight support is provided on both sides to ensure the overall support strength and stability.

[0011] Furthermore, multiple sets of sliding grooves are provided on the crossbeam, and pulleys are rotatably installed in the sliding grooves, with steel chains passing around the pulleys.

[0012] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by setting pulleys, the steel chain can smoothly pass around the pulleys to change the direction of force, reduce friction with the crossbeam, reduce the energy consumption and component wear of the electric winch, and improve the service life of the equipment.

[0013] Furthermore, sliding tracks are provided on the upper and lower sides of the inner wall of the chute, and the installation areas of the sliding tracks and pulleys are independent of each other and set in parallel.

[0014] Furthermore, the side support frame also includes a lateral support arm, which is slidably connected to the sliding rail via a slider. One end is equipped with an electric telescopic device, and the other end is equipped with a rubber support head.

[0015] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by setting up lateral support arms to play an auxiliary support role, and by adjusting the position to contact the contact surfaces on both sides, reliable lateral support is provided, which makes up for the defects of insufficient anchoring force and easy failure under shear force in loose coal seams, enhances the support effect on both sides of the coal seam, and improves the stability and adaptability of the overall support structure under complex coal seam conditions.

[0016] Furthermore, the slider has a trapezoidal structure, which is adapted to the sliding track on the crossbeam.

[0017] Furthermore, an elastic buffer connector is provided at the connection between the support net and the steel chain. One end of the elastic buffer connector is connected to the steel ring of the support net, and the other end is connected to the steel chain.

[0018] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by setting up elastic buffer connectors, the energy is absorbed and buffered by utilizing the characteristics of rubber springs, avoiding the connection between the support net and the steel chain from bearing huge instantaneous impact forces, and extending its service life.

[0019] Furthermore, multiple sets of connecting rings are provided on both sides of the support base plate, and the support mesh is connected to the support base plate on one side through ring buckles corresponding to the positions of the connecting rings.

[0020] Furthermore, the electric winch has multiple sets of chucks evenly spaced on its drum, with adjacent chucks forming a winding area. Each winding area has a fixing ring for connecting the ends of the steel chain.

[0021] Furthermore, the mounting holes on the column are arranged in multiple rows at equal intervals to adjust the connection height with the crossbeam.

[0022] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by setting multiple sets of installation holes to adjust the overall height of the support structure, the adaptability to different steeply inclined thin coal seam mining environments is improved, the need to replace the entire support structure due to changes in coal seam height is avoided, costs and time are saved, and mining efficiency is improved.

[0023] Compared with existing technologies, the advantages of this utility model for a lightweight support device for steeply inclined thin coal seams are as follows: By designing lightweight support components, it is better able to cope with unevenness and high pressure conditions compared with traditional plate support structures, reducing the risk of collapse; by using an electric winch in conjunction with a steel chain to adjust the tension of the support mesh, it changes the current situation where traditional support structures are difficult to adjust flexibly according to inclined coal seams, further increasing the contact area with the coal seam, better adapting to dynamic changes in coal seam thickness and pressure, and improving support stability; by setting lateral support arms to provide auxiliary support, and by adjusting their position to contact the contact surfaces on both sides, it provides reliable lateral support, making up for the defects of insufficient anchoring force and easy failure under shear force in loose coal seams, enhancing the support effect on both sides of the coal seam, and improving the stability and adaptability of the overall support structure under complex coal seam conditions; by setting elastic buffer connectors to absorb and buffer energy using the characteristics of rubber springs, it avoids the connection between the support mesh and the steel chain from being subjected to instantaneous huge impact force, extending its service life. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of a lightweight support device for a steeply inclined thin coal seam.

[0026] Figure 2 This is a schematic diagram showing the connection between the support base plate and the support mesh.

[0027] Figure 3 This is a schematic diagram of the winding area of ​​an electric winch.

[0028] Figure 4 This is a schematic diagram of the interior of the groove on the crossbeam;

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 10. Side support frame; 101. Column; 102. Horizontal beam; 103. Diagonal brace; 104. Lateral support arm; 1041. Support head; 11. Support base plate; 12. Support net; 13. Steel chain; 14. Electric winch; 141. Chuck; 15. Pulley; 16. Electric telescopic device; 17. Elastic buffer connector. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0032] like Figure 1-4 The image shows an embodiment of a lightweight support device for a steeply inclined thin coal seam provided by this utility model. In this embodiment, it includes side support frames 10 on both sides, wherein a lightweight support assembly is provided between the side support frames 10. The lightweight support assembly includes a support base plate 11 and support nets 12 on both sides. One side of the support net 12 is connected to a steel chain 13, and the other side is connected to a steel chain 13. An electric winch 14 is provided on the side support frame 10. One end of the steel chain 13 is connected to the support net 12, and the other end is fixedly connected to the drum of the electric winch 14 through a ring buckle.

[0033] In use, the uprights 101 of the side support frame 10 are erected and placed firmly on the ground. The crossbeam 102 is bolted to the uprights 101 at a suitable height to construct a stable side support frame 10. Then, the steel chain 13 is passed around the pulleys in sequence, and the two sides of the support base plate 11 are connected to one side of a set of support nets 12 respectively. The other side of the support nets 12 is connected to the steel chain 13, and the end of the steel chain 13 is fixed to the drum of the electric winch 14. According to the width of the coal seam interval, the position of the lateral support arm 104 is adjusted by sliding the slider in the groove of the crossbeam 102. The electric telescopic device 16 is activated to extend the end with the support head 1041 to fit tightly against the side wall of the coal seam.

[0034] In the above technical solution, the side support frame 10 includes a column 101, a crossbeam 102 and a diagonal brace 103. The bottom of the column 101 is provided with a trapezoidal base plate. The crossbeam 102 is fixedly connected to the column 101 by bolts. One end of the diagonal brace 103 is connected to the column 101 and the other end is connected to the base plate.

[0035] Furthermore, in the above technical solution, multiple sets of sliding grooves are provided on the crossbeam 102, and pulleys 15 are rotatably arranged in the sliding grooves, with steel chains 13 passing around the pulleys 15.

[0036] Furthermore, in the above technical solution, sliding tracks are also provided on the upper and lower sides of the inner wall of the chute, and the sliding tracks and the installation area of ​​the pulley 15 are set independently and in parallel.

[0037] Furthermore, in the above technical solution, the side support frame 10 also includes a side support arm 104, which is slidably connected to the sliding rail via a slider, with an electric telescopic device 16 at one end and a rubber support head 1041 at the other end.

[0038] Furthermore, in the above technical solution, the slider has a trapezoidal structure, which is adapted to the sliding track on the crossbeam 102.

[0039] Furthermore, in the above technical solution, an elastic buffer connector 17 is provided at the connection between the support net 12 and the steel chain 13. One end of the elastic buffer connector 17 is connected to the steel ring of the support net 12, and the other end is connected to the steel chain 13.

[0040] Among them, the elastic buffer connector 17 is a cylindrical rubber spring, one end of which is connected to the steel ring of the support net 12, and the other end is connected to the steel chain.

[0041] Furthermore, in the above technical solution, multiple sets of connecting rings are provided on both sides of the support base plate 11, and one side of the support net 12 is connected to the support base plate 11 through ring buckles corresponding to the positions of the connecting rings.

[0042] Furthermore, in the above technical solution, multiple sets of chucks 141 are equidistantly arranged on the drum of the electric winch 14, and a winding area is formed between adjacent chucks 141. A fixing ring is provided on each winding area to connect the ends of the steel chain 13 accordingly.

[0043] Furthermore, in the above technical solution, the mounting holes on the column 101 are arranged in multiple rows at equal intervals to adjust the connection height with the crossbeam 102.

[0044] Specifically, the principle of this utility model is as follows: a stable structure is formed by the column 101, the crossbeam 102, and the diagonal brace 103, which disperses and bears the pressure from above and the sides; the electric winch 14 drives the drum to rotate, realizing the winding and unwinding of the steel chain 13, thereby flexibly adjusting the tension of the support net 12 to adapt to changes in the coal seam. The pulley 15 changes the direction of force on the steel chain 13, reducing friction and improving operating efficiency. With the lateral support arm 104 being slidable and retractable, based on the cooperation of the slider and the sliding track and the movement of the electric telescopic device 16, the position and auxiliary support length are flexibly adjusted according to the actual size of the roadway and coal seam. The support head 1041 increases friction by increasing the roughness of the contact surface, enhancing the support effect on the sidewall of the coal seam; the elastic buffer connector 17 utilizes the elastic potential energy of the rubber spring to protect the connection between the support net 12 and the steel chain 13 when the coal seam vibrates or the pressure changes suddenly.

Claims

1. A lightweight support device for steeply inclined thin coal seams, comprising side support frames (10) on both sides, characterized in that, Lightweight support components are provided between the side support frames (10). The lightweight support components include a support base plate (11) and support nets (12) on both sides. One side of the support net (12) is connected to a steel chain (13), and the other side is connected to a steel chain (13). An electric winch (14) is provided on the side support frame (10). One end of the steel chain (13) is connected to the support net (12), and the other end is fixedly connected to the drum of the electric winch (14) through a ring buckle.

2. A lightweight support device for steeply inclined thin coal seams according to claim 1, characterized in that, The side support frame (10) includes a column (101), a crossbeam (102) and a diagonal brace (103). The bottom of the column (101) is provided with a trapezoidal base plate. The crossbeam (102) is fixedly connected to the column (101) by bolts. One end of the diagonal brace (103) is connected to the column (101), and the other end is connected to the base plate.

3. A lightweight support device for steeply inclined thin coal seams according to claim 2, characterized in that, Multiple sets of sliding grooves are provided on the crossbeam (102), and pulleys (15) are rotatably installed in the sliding grooves, with steel chains (13) passing around the pulleys (15).

4. A lightweight support device for steeply inclined thin coal seams according to claim 3, characterized in that, The inner wall of the chute is also provided with sliding rails on the upper and lower sides. The installation areas of the sliding rails and pulleys (15) are independent of each other and set in parallel.

5. A lightweight support device for steeply inclined thin coal seams according to claim 4, characterized in that, The side support frame (10) also includes a side support arm (104), which is slidably connected to the sliding rail via a slider. One end is equipped with an electric telescopic device (16), and the other end is equipped with a rubber support head (1041).

6. A lightweight support device for steeply inclined thin coal seams according to claim 5, characterized in that, The slider has a trapezoidal structure and is adapted to the sliding track on the crossbeam (102).

7. A lightweight support device for steeply inclined thin coal seams according to claim 6, characterized in that, An elastic buffer connector (17) is provided at the connection between the support net (12) and the steel chain (13). One end of the elastic buffer connector (17) is connected to the steel ring of the support net (12), and the other end is connected to the steel chain (13).

8. A lightweight support device for steeply inclined thin coal seams according to claim 7, characterized in that, Multiple sets of connecting rings are provided on both sides of the support base plate (11), and the support net (12) is connected to the support base plate (11) on one side by ring buckles corresponding to the positions of the connecting rings.

9. A lightweight support device for steeply inclined thin coal seams according to claim 8, characterized in that, Multiple sets of chucks (141) are equidistantly arranged on the drum of the electric winch (14). A winding area is formed between adjacent chucks (141). A fixing ring is provided on each winding area to connect the ends of the steel chain (13).

10. A lightweight support device for steeply inclined thin coal seams according to claim 9, characterized in that, The mounting holes on the column (101) are arranged in multiple rows at equal intervals to adjust the connection height with the crossbeam (102).

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