Hydraulic support for pseudo-inclined mining of steeply inclined coal seam

Abstract

The invention discloses a steeply inclined coal seam pseudo-inclined mining hydraulic support, which belongs to the field of coal mine underground coal face comprehensive mechanized coal mining support equipment, and comprises a base, first hydraulic cylinders oppositely arranged on the base, and a top beam arranged at the output ends of the first hydraulic cylinders, a counterweight structure is arranged on the base and comprises a guide groove formed in the base, a guide rod fixedly arranged in the guide groove, a sliding block axially moving on the guide rod, a counterweight block arranged on the base, a multi-section hydraulic cylinder fixedly installed on the base and a hinge rod hinged to the counterweight block. A protection structure is arranged at one end of the top beam. Through the design of the balance weight structure, the pressure of the side, located above the inclined face, of the base can be increased, so that the hydraulic support is effectively prevented from toppling over due to excessive inclination, and the safety of mining operation is improved; a top beam of the support is provided with a movable fan-shaped front end beam, so that the front end of the top beam can effectively seal a top plate of a pseudo-inclined arrangement working face, and empty roof operation is eradicated.

Description

Technical Field

[0001] The present application relates to the technical field of comprehensive mechanized coal mining support equipment for underground coal mining working faces in coal mines, and specifically to a hydraulic support for pseudo-inclined mining of steeply inclined coal seams. Background Art

[0002] In the mining process of steeply inclined coal seams, traditional mining methods often face many challenges, especially the stability and safety issues of mining equipment caused by the excessive inclination of the coal seams. In order to solve this problem, the Chinese invention patent with the authorization announcement number CN102373937B proposes an innovative diamond-shaped hydraulic support for the pseudo-inclined mining working face of steeply inclined coal seams. The diamond-shaped hydraulic support realizes flexible adjustment of the movable part of the front end of the support top beam through adjustment devices such as the balance adjustment cylinder hinged to the top beam and the cover beam. This design not only ensures a stable beam end distance, effectively prevents safety hazards such as spalling and roof collapse, but also maintains the smooth passage of pedestrians in front of the hydraulic support, providing safe and convenient passage space for workers. At the same time, the support also forms a stable beam end distance and pedestrian space, further improving the safety and efficiency of mining operations.

[0003] However, despite the significant progress in design and function, the diamond-shaped hydraulic support still faces certain challenges in actual use. Since the support is placed on an inclined plane, this inclined placement method can easily cause the hydraulic support to topple over when subjected to external forces or changes in coal seam conditions. Once the support topples over, it will not only cause equipment damage and production losses, but may also pose a serious threat to the lives of workers.

[0004] Therefore, the present application provides a hydraulic support for pseudo-inclined mining of steeply inclined coal seams to solve the above-mentioned problems. Summary of the invention

[0005] The present application provides a hydraulic support for pseudo-inclined mining in steeply inclined coal seams, aiming to solve the problem in the background technology that the hydraulic support is placed obliquely on an inclined surface, and this inclined placement method easily causes the hydraulic support to topple over when subjected to external force or when the coal seam conditions change. Once the support topples over, it will not only cause equipment damage and production stoppage losses, but may also pose a serious threat to the life safety of the workers.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a hydraulic support for pseudo-inclined mining of steeply inclined coal seams, comprising a base, a first hydraulic cylinder relatively arranged on the base, and a top beam arranged at the output end of the first hydraulic cylinder; a counterweight structure for preventing the hydraulic support from tipping over is arranged on the base, and the counterweight structure comprises a guide groove provided on the base, a guide rod fixedly arranged in the guide groove, a slider axially moving on the guide rod and in contact with the inner wall of the guide groove, a counterweight block arranged on the base and fixedly connected to the slider, a multi-section hydraulic cylinder fixedly mounted on the base, and an articulated rod hinged on the counterweight block and articulated at the output end of the multi-section hydraulic cylinder. After the position of the hydraulic support is fixed, the counterweight block can be adjusted upwardly to the inclination of the base 1 through the cooperation of the multi-section hydraulic cylinder and the articulated rod, and the weight of the counterweight block will increase the pressure on the side of the base above the inclined surface, thereby effectively preventing the hydraulic support from tipping over.

[0007] A protection structure is provided at one end of the top beam.

[0008] Preferably, in order to facilitate the movement of the counterweight on the base: the lower end of the counterweight corresponds to the two ends of the slider and is fixedly connected with a plurality of rollers, and the outer wall of the roller is in contact with the upper end of the base. The rollers can reduce the friction generated when the counterweight moves on the rollers, so that the counterweight can be easily moved on the base.

[0009] Preferably, in order to improve the friction between the base and the inclined surface: grooves are provided on both sides of the bottom end of the base, and tooth plates are fixedly installed inside the grooves by bolts. The tooth plates increase the contact area and friction between the base and the inclined surface, so that the stability of the base on the inclined surface is greatly improved. Even when the coal seam conditions are complex and the inclined surface has a large inclination angle, it can ensure that the base does not slide or move, thereby maintaining the overall stability of the hydraulic support.

[0010] Preferably, in order to facilitate workers walking under the top beam: the protective structure includes a front beam fixedly arranged at one end of the top beam, a guard plate rotatably arranged at one end of the front beam away from the top beam, and a second hydraulic cylinder hinged at the bottom of the front beam, and the output end of the second hydraulic cylinder is hinged to the movable end of the guard plate. The movable end of the guard plate is provided with an arc-shaped limiting groove, and a limiting rod fixedly connected to the front beam is slidably arranged inside the arc-shaped limiting groove. The movable end of the guard plate can be limited by the cooperation of the arc-shaped limiting groove and the limiting rod. The introduction of the protective structure provides a safe passage for workers walking under the top beam. The guard plate can effectively shield and isolate potential danger areas and reduce the risk of injury to workers.

[0011] Preferably, in order to facilitate the change of the supporting direction of the protective structure: the end of the front beam close to the top beam is rotatably inserted with a rotating rod fixedly connected to the top beam, and the end of the top beam close to the front beam is symmetrically provided with transverse grooves, and bolts threadedly inserted with the front beam are slidably inserted in the transverse grooves.

[0012] Preferably, in order to ensure that the top beam stabilizing column is placed above the base: a hinge is provided at the other end of the top beam, and the hinge includes a first connecting rod symmetrically hinged to the other end of the top beam and a second connecting rod hinged to the bottom of the first connecting rod and hinged to the base. Through the design of the hinge, a stable connection structure is formed between the top beam and the base. The hinged cooperation of the first connecting rod and the second connecting rod enables the top beam to remain stable when subjected to coal seam pressure and is not prone to tilting or displacement.

[0013] Preferably, in order to facilitate the protection of the other side of the top beam: a shield plate connected to the end of the first connecting rod is hingedly connected to the end of the first connecting rod. The design of the shield plate can effectively shield and protect the other side of the top beam, preventing coal from falling onto the base during mining, thereby avoiding equipment damage and safety hazards caused by coal accumulation.

[0014] Preferably, in order to further prevent the hydraulic support from tilting: a locking structure for fixing adjacent bases together is provided on the base, and the locking structure includes a double-axis oil cylinder provided in the base, a sleeve movably plugged on one side of the base and connected to one output end of the double-axis oil cylinder, a plug rod movably plugged on the other side of the base and connected to the other output end of the double-axis oil cylinder for matching with the sleeve, and a locking piece for locking the plug rod inside the sleeve. Through the design of the locking structure, adjacent bases can be firmly fixed together to form a stable overall structure, preventing the hydraulic support from tilting on the slope and ensuring the safety and stability of the mining operation.

[0015] Preferably, the locking member includes a first rack relatively arranged in the sleeve, and a second rack symmetrically arranged on the insertion rod between two corresponding first racks, and a hinge plate hinged to the insertion rod is hingedly connected to the second rack on one side close to the insertion rod. Through the meshing connection between the first rack and the second rack, the locking member can firmly fix the insertion rod in the sleeve, effectively preventing the adjacent bases from moving away from each other.

[0016] Preferably, in order to prevent the sleeve and the plug rod from being separated from the base: limiting grooves are respectively provided on both sides of the base corresponding to the sleeve and the plug rod, and limiting plates are fixedly connected to the sleeve and the plug rod, and the limiting plates are slidably connected to the limiting grooves. The cooperation between the limiting grooves and the limiting plates can effectively prevent the sleeve and the plug rod from being separated from the base during movement, thereby avoiding equipment damage and safety hazards caused by the falling of components.

[0017] The present application can increase the pressure on the side of the base above the inclined surface through the design of the counterweight structure, thereby effectively preventing the hydraulic support from tipping over due to excessive tilting and improving the safety of mining operations. Through the cooperation of the multi-section hydraulic cylinder and the articulated rod, the counterweight block can be adjusted laterally under the action of the guide rod. This design allows the position of the counterweight block to be flexibly adjusted according to actual needs to adapt to different mining environments and coal seam conditions. The design of the counterweight structure is simple and clear, and is easy to manufacture and maintain.

[0018] The introduction of the protection structure of this application provides a safe passage for workers to walk under the top beam. The guard plate can effectively block and isolate potential dangerous areas, reducing the risk of worker injury. At the same time, it is also convenient to support the coal mining area, expand the coal mining area, and ensure the safety of the coal mining area. By adjusting the telescopic length of the second hydraulic cylinder and the rotation angle of the guard plate, the walking space and working environment of the workers can be optimized, and the efficiency and comfort of the mining operation can be improved. The design of the protection structure has certain flexibility and adaptability, and can be adjusted according to different mining conditions and coal seam characteristics to meet diverse operational needs.

[0019] Through the design of the locking structure, the adjacent bases can be firmly fixed together to form a stable overall structure, which prevents the hydraulic support from tilting on the slope and ensures the safety and stability of the mining operation. The design of the locking structure takes into account the inclination angles of different slopes and the characteristics of the coal seam, so that the hydraulic support can adapt to a variety of mining conditions. At the same time, the driving method of the dual-axis oil cylinder enables the locking structure to be flexibly adjusted and fixed, which improves the adaptability and flexibility of the hydraulic support.

[0020] The present invention uses the meshing connection between the first rack and the second rack, and the locking member can firmly fix the rod in the sleeve, effectively preventing the adjacent bases from moving away from each other. When the rod is inserted into the sleeve, the second rack can be smoothly meshed with the first rack simply by the guidance of the hinge plate, without the need for additional locking devices or tools. This design reduces the difficulty and time cost of operation and improves mining efficiency.

[0021] The protection structure of the present application adopts a two-section structural design, which is divided into a front beam and a guard plate. The front beam is on the side of the goaf as the main support body and bears the main pressure; the guard plate is on the side of the coal wall, bears the end face support of the coal mining working face, and ensures that the beam end is basically in contact with the coal wall. The front beam and the guard plate are hingedly connected and adjusted and fixed by a second hydraulic cylinder to adapt to different pseudo-bevel angles to ensure full closed support for the roof. The front beam is movably connected to the top beam through a rotating rod and fixed to the top beam through bolts to adapt to changes in the direction of advancement of the working face. When the working face changes direction, the guard plate can be replaced by manually disassembling and assembling the bolts to rotate the front beam. According to the different pseudo-bevel angles of the working face, the second hydraulic cylinder is adjusted to extend and retract, so that the guard plate can be in contact with the coal wall of the front working face at any time to ensure effective support for the roof. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a hydraulic support for pseudo-inclined mining of steeply inclined coal seams; Figure 2 for Figure 1 Bottom view of the structure on the other side; Figure 3 for Figure 1 The main view of the structure in; Figure 4 is a schematic diagram of the counterweight structure; Figure 5 Schematic diagram of the protection structure; Figure 6 is a schematic diagram of the locking structure; Figure 7 for Figure 5 Schematic diagram of another state of the structure; Figure 8 and Fig. 9 The two states of the guard plate 52 are shown in FIG.

[0023] In the figure: 1. Base; 11. Groove; 12. Tooth plate; 13. Limiting groove; 2. First hydraulic cylinder; 3. Top beam; 31. Rotating rod; 32. Horizontal groove; 33. Bolt; 4. Counterweight structure; 41. Guide groove; 42. Guide rod; 43. Sliding block; 44. Counterweight block; 45. Multi-section hydraulic cylinder; 46. Articulated rod; 5. Protection structure; 51. Front beam; 511. Limiting rod; 52. Guard plate; 521. Arc-shaped limiting sliding groove; 53. Second hydraulic cylinder; 6. Articulated member; 61. First connecting rod; 611. Shield plate; 62. Second connecting rod; 7. Locking structure; 71. Double-axis cylinder; 72. Sleeve; 73. Inserting rod; 74. Locking member; 741. First rack; 742. Second rack; 743. Articulated plate; 8. Limiting plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0025] Example 1 This embodiment provides a hydraulic support for pseudo-inclined mining of steeply inclined coal seams, such as Figure 1-7 As shown, the hydraulic support includes a base 1, a first hydraulic cylinder 2 arranged relatively on the base 1, and a top beam 3 arranged at the output end of the first hydraulic cylinder 2; The base 1 is provided with a counterweight structure 4 for preventing the hydraulic support from tipping over. The counterweight structure 4 includes a guide groove 41 provided on the base 1, a guide rod 42 fixedly provided in the guide groove 41, a slider 43 axially moving on the guide rod 42 and contacting the inner wall of the guide groove 41, a counterweight block 44 provided on the base 1 and fixedly connected to the slider 43, a multi-section hydraulic cylinder 45 fixedly installed on the base 1, and an articulated rod 46 hinged on the counterweight block 44 and articulated at the output end of the multi-section hydraulic cylinder 45. Through the design of the counterweight structure 4, the pressure on the side of the base 1 above the inclined surface can be increased, thereby effectively preventing the hydraulic support from tipping over due to excessive tilting, and improving the safety of the mining operation. Through the cooperation of the multi-section hydraulic cylinder 45 and the articulated rod 46, the counterweight block 44 can be adjusted laterally under the action of the guide rod 42. This design allows the position of the counterweight block 44 to be flexibly adjusted according to actual needs to adapt to different mining environments and coal seam conditions. The design of the counterweight structure 4 is concise and clear, and is easy to manufacture and maintain. After the hydraulic support is fixed in position, the counterweight 44 can be adjusted upwardly toward the inclined surface of the base 1 through the cooperation of the multi-section hydraulic cylinder 45 and the articulated rod 46. The weight of the counterweight 44 will increase the pressure on the side of the base 1 above the inclined surface, thereby effectively preventing the hydraulic support from tipping over.

[0026] In order to facilitate the movement of the counterweight 44 on the base 1: the lower end of the counterweight 44 corresponds to the two ends of the slider 43 and is fixedly connected with a plurality of rollers 441, and the outer wall of the roller 441 contacts the upper end of the base 1. The rollers 441 can reduce the friction generated when the counterweight 44 moves on the rollers 441, so that the counterweight 44 can be easily moved on the base 1.

[0027] In order to improve the friction between the base 1 and the inclined surface: grooves 11 are provided on both sides of the bottom end of the base 1, and tooth plates 12 are fixedly installed inside the grooves 11 by bolts. The tooth plates 12 increase the contact area and friction between the base 1 and the inclined surface, so that the stability of the base 1 on the inclined surface is greatly improved. Even when the coal seam conditions are complex and the inclined surface has a large inclination angle, it can ensure that the base 1 does not slide or displace, thereby maintaining the overall stability of the hydraulic support. The design of the tooth plate 12 enables the base 1 to be applicable to inclined surfaces with different inclination angles, thereby enhancing the adaptability and flexibility of the hydraulic support. When the hydraulic support is placed on the inclined surface, the bottom end of the base 1 contacts the inclined surface. Since the tooth plate 12 is installed inside the groove 11, the toothed structure of the tooth plate 12 can penetrate into the tiny concave and convex parts of the inclined surface, thereby increasing the contact area and friction between the base 1 and the inclined surface. This design makes the base 1 more stable on the inclined surface and less likely to slide or displace. Even if it is affected by external forces or changes in coal seam conditions, the friction of the tooth plate 12 can resist these effects and maintain the overall stability of the hydraulic support.

[0028] In order to ensure that the top beam 3 is stably placed above the base 1: a hinge 6 is provided at the other end of the top beam 3, and the hinge 6 includes a first connecting rod 61 symmetrically hinged at the other end of the top beam 3 and a second connecting rod 62 hinged at the bottom of the first connecting rod 61 and hinged to the base 1. Through the design of the hinge 6, a stable connection structure is formed between the top beam 3 and the base 1. The hinged cooperation of the first connecting rod 61 and the second connecting rod 62 enables the top beam 3 to remain stable when subjected to coal seam pressure, and is not prone to tilt or displacement. During mining operations, when the height and angle of the top beam 3 need to be adjusted, the first hydraulic cylinder 2 is first started. The telescopic function of the first hydraulic cylinder 2 enables the top beam 3 to adjust its height and angle through the hinge 6. At the same time, the hinged cooperation of the first connecting rod 61 and the second connecting rod 62 enables the top beam 3 to remain stable during the adjustment process, and is not prone to tilt or displacement. When the top beam 3 is adjusted to a suitable height and angle, the first hydraulic cylinder 2 locks the position to ensure that the top beam 3 can be stably placed directly above the base 1. At this time, the hydraulic support as a whole presents a stable and reliable supporting state, providing strong technical support for mining operations.

[0029] In order to facilitate the protection of the other side of the top beam 3: the end of the top beam 3 close to the first connecting rod 61 is hinged with a shield plate 611 connected to the end of the first connecting rod 61. The design of the shield plate 611 can effectively shield and protect the other side of the top beam 3, preventing coal from falling onto the base 1 during the mining process, thereby avoiding equipment damage and safety hazards caused by coal accumulation. The introduction of the shield plate 611 makes the mining environment more tidy and orderly, and improves the work efficiency and comfort of the workers. At the same time, the shield plate 611 can also reduce the flying and scattering of coal, reducing pollution to the environment. During the mining operation, the shield plate 611 can shield and protect the other side of the top beam 3. At the same time, the design of the shield plate 611 also takes into account the landing point and direction of the coal to ensure that it can effectively prevent the coal from falling onto the base 1. During the mining process, the shield plate 611 always maintains a stable and reliable state, providing strong protection and support for the mining operation.

[0030] Example 2 Different from the first embodiment, in order to facilitate the workers to walk under the top beam 3 and to facilitate the support of the coal mining area: Figure 5 A protective structure 5 is provided at one end of the top beam 3. The protective structure 5 includes a front beam 51 fixedly provided at one end of the top beam 3, a guard plate 52 rotatably provided at one end of the front beam 51 away from the top beam 3, and a second hydraulic cylinder 53 hinged at the bottom of the front beam 51. The output end of the second hydraulic cylinder 53 is hinged to the movable end of the guard plate 52. The introduction of the protective structure 5 provides a safe passage for workers to walk under the top beam 3. The guard plate 52 can effectively shield and isolate potential dangerous areas and reduce the risk of injury to workers. At the same time, it is also convenient to support the coal mining area, increase the coal mining area, and ensure the safety of the coal mining area. By adjusting the telescopic length of the second hydraulic cylinder 53 and the rotation angle of the guard plate 52, the walking space and working environment of the workers can be optimized, and the efficiency and comfort of the mining operation can be improved. The design of the protective structure 5 has certain flexibility and adaptability, and can be adjusted according to different mining conditions and coal seam characteristics to meet diverse operation needs. During mining operations, the extension and retraction of the second hydraulic cylinder 53 can drive the guard plate 52 to be hinged and rotated on the front beam 51, so that the guard plate 52 effectively closes and supports the coal wall in front of the working face, and changes the supporting area of ​​the front beam 51.

[0031] The movable end of the guard plate 52 is provided with an arc-shaped limiting slot 521, and a limiting rod 511 fixedly connected to the front beam 51 is slidably arranged inside the arc-shaped limiting slot 521. The movable end of the guard plate 52 can be limited by the cooperation of the arc-shaped limiting slot 521 and the limiting rod 511.

[0032] Example 3 The difference from Example 2 is that, referring to the attached Figure 7As shown, the end of the front beam 51 close to the top beam 3 is rotatably plugged with a rotating rod 31 fixedly connected to the top beam 3, and the end of the top beam 3 close to the front beam 51 is symmetrically provided with a transverse groove 32, and the bolt 33 threadedly plugged with the front beam 51 is slidably plugged into the transverse groove 32. When the working face is reversed, the bolt 33 is manually removed by a wrench, and then the front beam 51 is rotated to rotate the front beam 51 180°, and then the front beam 51 is fixedly connected to the top beam 3 by the bolt 33. The protective structure 5 of the present application adopts a two-stage structural design, which is divided into a front beam 51 and a guard plate 52. The front beam 51 is close to the goaf side as the supporting body and bears the main pressure; the guard plate 52 is close to the coal wall side, bears the end face support of the coal mining working face, and ensures that the beam end is basically in contact with the coal wall. The front beam 51 and the guard plate 52 are hingedly connected, and the second hydraulic cylinder 53 is used to adjust and fix them to adapt to different pseudo-bevel angles to ensure full closed support of the top plate. The front beam 51 is movably connected to the top beam 3 through the rotating rod 31, and is fixedly connected to the top beam 3 through the bolt 33 to adapt to the change of the working face advancing direction. When the working face changes direction, the front beam 51 is manually rotated by disassembling and assembling the bolt 33 to realize the replacement of the guard plate. With the different pseudo-inclined angles of the working face, the second hydraulic cylinder 53 is adjusted to extend and retract, so that the guard plate 52 can fit the coal wall of the front working face at any time to ensure effective support for the roof.

[0033] Example 4 Different from the first embodiment, in order to further prevent the hydraulic support from tilting, a locking structure 7 for fixing adjacent bases 1 together is provided on the base 1, and the locking structure 7 includes a double-axis oil cylinder 71 provided in the base 1, a sleeve 72 movably plugged on one side of the base 1 and connected to one output end of the double-axis oil cylinder 71, a plug rod 73 movably plugged on the other side of the base 1 and connected to the other output end of the double-axis oil cylinder 71 for matching with the sleeve 72, and a locking member 74 for locking the plug rod 73 inside the sleeve 72. Through the design of the locking structure 7, the adjacent bases 1 can be firmly fixed together to form a stable overall structure, preventing the hydraulic support from tilting on the inclined surface, and ensuring the safety and stability of the mining operation. The design of the locking structure 7 takes into account the inclination angles of different inclined surfaces and the characteristics of the coal seam, so that the hydraulic support can adapt to a variety of mining conditions. At the same time, the driving mode of the double-axis oil cylinder 71 enables the locking structure 7 to be flexibly adjusted and fixed, thereby improving the adaptability and flexibility of the hydraulic support. During the mining operation, when it is necessary to fix the adjacent bases 1 together, the double-axis cylinder 71 is first started. The telescopic function of the double-axis cylinder 71 allows the sleeve 72 and the plug rod 73 to be moved out from both sides of the base 1 respectively. When the relative positions of the sleeve 72 and the plug rod 73 are appropriate, the plug rod 73 will be inserted into the inside of the sleeve 72. At this time, the plug rod 73 is stably fixed inside the sleeve 72 by the locking piece 74 to ensure the stability of the connection between the adjacent bases 1. During the locking process, the cooperation between the sleeve 72 and the plug rod 73 can prevent the plug rod 73 from moving up and down, thereby ensuring that the adjacent bases 1 are in a stable conflicting state with the inclined surface. This design enables the hydraulic support to maintain a stable and reliable support state on the inclined surface, providing strong technical support for mining operations.

[0034] Specifically, the locking member 74 includes a first rack 741 relatively arranged in the sleeve 72, and a second rack 742 symmetrically arranged between two corresponding first racks 741 on the plug rod 73, and a hinge plate 743 hinged to the plug rod 73 is hinged on the side of the second rack 742 close to the plug rod 73. Through the meshing connection between the first rack 741 and the second rack 742, the locking member 74 can firmly fix the plug rod 73 in the sleeve 72, effectively preventing the adjacent bases 1 from moving away from each other. When the plug rod 73 is inserted into the sleeve 72, the second rack 742 can be smoothly meshed with the first rack 741 only through the guidance of the hinge plate 743, without the need for additional locking devices or tools. This design reduces the difficulty of operation and time cost, and improves mining efficiency. In mining operations, when it is necessary to fix adjacent bases 1 together, the double-axis oil cylinder 71 is first started to move the sleeve 72 and the plug rod 73 out from both sides of the base 1 respectively. When the relative positions of the sleeve 72 and the insertion rod 73 are appropriate, the insertion rod 73 will be inserted into the interior of the sleeve 72. At this time, one end of the second rack 742 contacts the inner wall of the sleeve 72. The insertion rod 73 continues to be pushed to move toward the interior of the sleeve 72, and the hinge plate 743 is elastically deformed under the push of the insertion rod 73, so that the second rack 742 moves away from the insertion rod 73. When the second rack 742 and the first rack 741 are meshed with each other, the locking member 74 firmly fixes the insertion rod 73 in the sleeve 72. At this time, the adjacent bases 1 are tightly connected together by the locking structure 7 to form a stable overall structure. This design enables the hydraulic support to maintain a stable and reliable support state on the inclined surface, providing strong technical support for mining operations.

[0035] Furthermore, in order to prevent the sleeve 72 and the plug rod 73 from being separated from the base 1: limiting grooves 13 are respectively provided on both sides of the base 1 corresponding to the sleeve 72 and the plug rod 73, and the sleeve 72 and the plug rod 73 are fixedly connected with limiting plates 8, and the limiting plates 8 are slidably connected with the limiting grooves 13. Through the cooperation of the limiting grooves 13 and the limiting plates 8, the sleeve 72 and the plug rod 73 can be effectively prevented from being separated from the base 1 during the movement, thereby avoiding equipment damage and safety hazards caused by the falling of components. The cooperation of the limiting grooves 13 and the limiting plates 8 not only plays a limiting role, but also plays a certain guiding role in the movement of the sleeve 72 and the plug rod 73. During the sliding process, the limiting grooves 13 play a limiting and guiding role on the limiting plates 8, ensuring that the sleeve 72 and the plug rod 73 can move according to the predetermined path. When the relative positions of the sleeve 72 and the plug rod 73 are appropriate, the plug rod 73 will be inserted into the interior of the sleeve 72 and fixed by the locking member 74. At this time, the limiting plate 8 will be tightly embedded in the limiting groove 13 to prevent the sleeve 72 and the insertion rod 73 from being separated from the base 1 during subsequent use.

[0036] The above are only preferred specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes based on the technical solution and concept of the present application within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A hydraulic support for pseudo-inclined mining of steeply inclined coal seams, comprising a base (1), a first hydraulic cylinder (2) arranged relative to the base (1), and a top beam (3) arranged at the output end of the first hydraulic cylinder (2); Features: The base (1) is provided with a counterweight structure (4) for preventing the hydraulic support from tipping over, the counterweight structure (4) comprising a guide groove (41) provided on the base (1), a guide rod (42) fixedly arranged in the guide groove (41), a slider (43) axially moving on the guide rod (42) and contacting the inner wall of the guide groove (41), a counterweight block (44) provided on the base (1) and fixedly connected to the slider (43), a multi-section hydraulic cylinder (45) fixedly mounted on the base (1), and an articulated rod (46) hinged on the counterweight block (44) and hinged to the output end of the multi-section hydraulic cylinder (45); A protective structure (5) is provided at one end of the top beam (3).

2. The hydraulic support for pseudo-inclined mining of steeply inclined coal seams according to claim 1 is characterized in that: The lower end of the counterweight block (44) is fixedly connected to a plurality of rollers (441) corresponding to both ends of the sliding block (43), and the outer walls of the rollers (441) are in contact with the upper end of the base (1).

3. The hydraulic support for pseudo-inclined mining of steeply inclined coal seams according to claim 1 is characterized in that: Grooves (11) are provided on both sides of the bottom end of the base (1), and toothed plates (12) are fixedly installed inside the grooves (11) by means of bolts.

4. The hydraulic support for pseudo-inclined mining of steeply inclined coal seams according to claim 1 is characterized in that: The protection structure (5) comprises a front beam (51) fixedly arranged at one end of the top beam (3), a side guard plate (52) rotatably arranged at one end of the front beam (51) away from the top beam (3), and a second hydraulic cylinder (53) hinged to the bottom of the front beam (51), the output end of the second hydraulic cylinder (53) being hinged to the movable end of the side guard plate (52), the movable end of the side guard plate (52) being provided with an arc-shaped limiting sliding groove (521), and a limiting rod (511) fixedly connected to the front beam (51) being slidably arranged inside the arc-shaped limiting sliding groove (521).

5. The hydraulic support for pseudo-inclined mining of steeply inclined coal seams according to claim 4 is characterized in that: A rotating rod (31) fixedly connected to the top beam (3) is rotatably inserted at one end of the front beam (51) close to the top beam (3), and a transverse groove (32) is symmetrically provided at one end of the top beam (3) close to the front beam (51), and a bolt (33) threadedly inserted into the front beam (51) is slidably inserted in the transverse groove (32).

6. The hydraulic support for pseudo-inclined mining of steeply inclined coal seams according to claim 1 is characterized by: The other end of the top beam (3) is provided with a hinged member (6), the hinged member (6) comprising a first connecting rod (61) symmetrically hinged to the other end of the top beam (3) and a second connecting rod (62) hinged to the bottom of the first connecting rod (61) and hinged to the base (1).

7. The hydraulic support for pseudo-inclined mining of steeply inclined coal seams according to claim 6 is characterized by: One end of the top beam (3) close to the first connecting rod (61) is hingedly connected to a shielding plate (611) connected to the end of the first connecting rod (61).

8. The hydraulic support for pseudo-inclined mining of steeply inclined coal seams according to claim 1 is characterized by: The base (1) is provided with a locking structure (7) for fixing adjacent bases (1) together, the locking structure (7) comprising a double-axis oil cylinder (71) arranged in the base (1), a sleeve (72) movably plugged into one side of the base (1) and connected to one output end of the double-axis oil cylinder (71), an insertion rod (73) movably plugged into the other side of the base (1) and connected to the other output end of the double-axis oil cylinder (71) for matching with the sleeve (72), and a locking member (74) for locking the insertion rod (73) inside the sleeve (72).

9. The hydraulic support for pseudo-inclined mining of steeply inclined coal seams according to claim 8, characterized in that: The locking member (74) comprises a first rack (741) arranged relatively inside the sleeve (72), and a second rack (742) symmetrically arranged on the insertion rod (73) between two corresponding first racks (741); a hinge plate (743) hinged to the insertion rod (73) is hingedly connected to the second rack (742) on one side close to the insertion rod (73).

10. The hydraulic support for pseudo-inclined mining of steeply inclined coal seams according to claim 8, characterized in that: Limiting grooves (13) are respectively provided on both sides of the base (1) corresponding to the sleeve (72) and the insertion rod (73); limiting plates (8) are fixedly connected to the sleeve (72) and the insertion rod (73); and the limiting plates (8) are slidably connected to the limiting grooves (13).

Images