A rib protection and roof strengthening advanced support under mining conditions in a rock burst mine

Abstract

The present invention discloses a rib-protecting and roof-strengthening advanced support under the mining conditions of a rock burst mine, which relates to the technical field of mine support and includes: a fuselage, a circumferential side-shifting mechanism, and a lifting mechanism. Among them, the circumferential side-shifting mechanism is slidably arranged on the lower side of the fuselage, a lifting mechanism is installed at the upper end position of the fuselage, an upper gob shield is fixed to the output end of the lifting mechanism, the upper gob shield is used for rib protection of the mine roof, and a side protection component is rotatably arranged on the guiding frame on the fuselage, and the side protection component is used for rib spalling of the mine side wall. The present invention adopts the method of combining the circumferential side-shifting mechanism with the support component, which can better adapt to roadways of different widths; at the same time, during the support process, the circumferential side-shifting mechanism cooperates with the lifting component and the side protection component, which is beneficial to the support of the mine roof and side walls.

Description

Technical Field

[0001] The present invention relates to the technical field of mine support, and specifically to a rib-protecting and roof-strengthening advanced support under the mining conditions of a rock burst mine. Background Technique

[0002] The mine advanced support is one of the important equipment in fully mechanized mining equipment, which is used to support the roadway roof in the mine in cooperation with the working face to protect equipment and personal safety. The previous methods for advanced support of the mining face mainly used combined support such as wire mesh and anchor cables constructed during roadway excavation, and adopted support forms such as single support and U-shaped steel supports, resulting in the following problems: 1. When applied to soft mine roadways, such as coal mines, the mine sidewalls cannot be supported; 2. The roadway is deformed due to the pressure in the geology; 3. Different roadway widths cannot be matched in a timely manner, and only rib-protecting mechanisms adapted to a single roadway width can be designed according to the supporting dimensions.

[0003] Therefore, it is necessary to provide a rib-protecting and roof-strengthening advanced support under the mining conditions of a rock burst mine to solve the problems raised in the above background technique. Summary of the Invention

[0004] To achieve the above object, the present invention provides the following technical solution: A rib-protecting and roof-strengthening advanced support under the mining conditions of a rock burst mine, including: a fuselage, a circumferential side-shifting mechanism, and a lifting mechanism. Among them, the circumferential side-shifting mechanism is slidably arranged under the fuselage, a lifting mechanism is installed at the upper end position of the fuselage, an upper gob plate is fixed to the output end of the lifting mechanism, the upper gob plate is used for rib protection of the mine top, and a side protection component is rotatably arranged on a guiding frame on the fuselage, and the side protection component is used for rib spalling of the mine sidewall.

[0005] Further, preferably, the circumferential side-shifting mechanism includes: a bottom plate, a support component, a circumferential moving component, and a limiting component. Among them, the bottom plate is fixed to the fuselage, a plurality of guiding balls are evenly distributed circumferentially on the bottom plate, a side-turning frame is slidably arranged in the guiding ball, and the side-turning frame is arranged in one-to-one correspondence with each guiding ball. One end of the side-turning frame is connected to the support component, and the other end is connected to the circumferential moving component. The circumferential moving component is arranged between a pre-set plate fixed to the bottom plate and a top frame, and a limiting component is arranged on the bottom plate, which is arranged corresponding to the circumferential moving component.

[0006] Further, preferably, a foot support is rotatably arranged at the lower end of the side-turning frame, and a connecting flap is arranged at the end position of the side-turning frame. One end of the foot support is connected to the connecting flap through a hydraulic cylinder, and the end of the foot support away from the hydraulic cylinder is connected to the connecting flap through a telescopic spring.

[0007] Further, as a preference, the circumferential movement component includes: a first runner, a driving wheel, and a fourth runner. Among them, a rotating shaft is rotatably arranged inside the top frame. The first runner is arranged on the rotating shaft, and a second runner is fixed to one end of the rotating shaft, and a third runner is fixed to the other end. One end of the second runner located inside the top frame is fixedly axially connected with a transverse runner. The transverse runner is meshed and driven with the driving wheel. A plurality of fourth runners are rotatably arranged inside the preset plate. The third runner is meshed and driven with the fourth runner. One side of the fourth runner is rotatably arranged inside the preset plate through a rocker, and the other end of the rocker is rotatably arranged inside the upper end of the side-turning frame.

[0008] Further, as a preference, the limiting component includes: a limiting runner. A base is fixed to the upper end of the bottom plate. A bushing is fixed inside the base. A rack is vertically slidably arranged inside the bushing. The limiting runner is fixed at the top end position of the rack. A single hole is formed at the middle position of the bushing. The rack is meshed with a gear at the position of the single hole.

[0009] Further, as a preference, the axial opening shape of the bushing is rectangular, which is used to limit the rotation of the rack inside the bushing.

[0010] Further, as a preference, the lifting mechanism includes: a first hydraulic jack and a second hydraulic jack. Among them, one end of the first hydraulic jack is fixed to the fuselage, and the other end is fixed to the upper baffle. The lower end of the second hydraulic jack is fixed to the fuselage, and the upper end is hinged with a hinge frame. There are two second hydraulic jacks. The other ends of the hinge frames are both hinged to the other side of the upper baffle. And columns are hinged to the side of the hinge frame away from the second hydraulic jack. The two columns are fixed to the upper end face of the fuselage.

[0011] Further, as a preference, the side protection component includes: side baffles. The side baffles are rotatably arranged on the guide frame. The side baffles are configured to be two. The two side baffles are respectively connected to the fuselage through a third hydraulic jack and a fourth hydraulic jack. And a groove is arranged at the cross part of the side baffles, which can make the two side baffles fit when rotating.

[0012] Compared with the prior art, the present invention provides a rib protection and roof strengthening advanced support under the mining conditions of a rock burst mine, and has the following beneficial effects:

[0013] In the embodiment of the present invention, the rib protection and roof strengthening advanced support adopts a circumferential side-shifting mechanism. In the circumferential direction, it can be opened and abutted against the bottom of the well in the advanced roadway through the support assembly, so that the support can better adapt to roadways of different widths. During the support process, the circumferential side-shifting mechanism is used as the first support and cooperates with the lifting assembly (as the second support), which is beneficial to the hierarchical support of the mine roof under the influence of ground pressure conditions. At the same time, it can not only support the mine roof, but also when the support is completed, raise the second hydraulic jack, and the upper baffle tilts downward, which is beneficial for the crushed stones on the mine roof to slide down along the upper baffle to the rear of the support, avoiding the falling stones from falling in front of the support and affecting the movement of the support. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of the rib protection and roof strengthening advanced support under the mining conditions of a rock burst mine;

[0015] Figure 2 It is a schematic diagram in the mine of the rib protection and roof strengthening advanced support under the mining conditions of a rock burst mine;

[0016] Figure 3 It is a schematic diagram of the structure of the circumferential side-shifting mechanism in the rib protection and roof strengthening advanced support under the mining conditions of a rock burst mine;

[0017] Figure 4 It is Figure 2 a schematic diagram of the structure of the support assembly;

[0018] Figure 5 It is Figure 2 a schematic diagram of the structure of the circumferential movement assembly;

[0019] Figure 6 It is Figure 2 a schematic diagram of the structure of the limit assembly;

[0020] Figure 7 It is a schematic diagram of the structure of the lifting mechanism in the rib protection and roof strengthening advanced support under the mining conditions of a rock burst mine;

[0021] In the figure: 1, fuselage; 2, circumferential side-shifting mechanism; 21, bottom plate; 22, guiding and connecting ball; 23, side-turning frame; 24, supporting assembly; 241, foot support; 242, hydraulic cylinder; 243, telescopic spring; 25, pre-set plate; 26, circumferential moving assembly; 261, rotating shaft; 262, first runner; 263, second runner; 264, third runner; 265, driving wheel; 266, fourth runner; 267, rocking seat; 27, top frame; 28, limiting assembly; 281, base; 282, bushing; 283, rack; 284, limiting runner; 285, gear; 3, lifting mechanism; 31, first hydraulic jack; 32, second hydraulic jack; 33, hinge frame; 34, column; 4, upper gangue retaining plate; 5, guiding frame; 6, side protection assembly; 61, side gangue retaining plate; 62, third hydraulic jack; 63, fourth hydraulic jack. Detailed implementation manner

[0022] Please refer to Figures 1 to 7 , in the embodiment of the present invention, a front support for protecting the rib and strengthening the roof under the mining conditions of a rock burst mine includes: a fuselage 1, a circumferential side-shifting mechanism 2, and a lifting mechanism 3. Among them, the circumferential side-shifting mechanism 2 is slidably arranged on the lower side of the fuselage 1, a lifting mechanism 3 is installed at the upper end position of the fuselage 1, an upper gangue retaining plate 4 is fixed to the output end of the lifting mechanism 3, the upper gangue retaining plate 4 is used for protecting the rib at the top of the mine, and a side protection assembly 6 is rotatably arranged on a guiding frame 5 located on the fuselage 1, and the side protection assembly 6 is used for preventing the rib spalling on the side wall of the mine.

[0023] In this embodiment, as Figure 3 shown, the circumferential side-shifting mechanism 2 includes: a bottom plate 21, a supporting assembly 24, a circumferential moving assembly 26, and a limiting assembly 28. Among them, the bottom plate 21 is fixed to the fuselage 1, a plurality of guiding and connecting balls 22 are evenly arranged circumferentially on the bottom plate 21, a side-turning frame 23 is slidably arranged in the guiding and connecting ball 22, and the side-turning frame 23 is arranged in one-to-one correspondence with each guiding and connecting ball 22. One end of the side-turning frame 23 is connected to the supporting assembly 24, and the other end thereof is connected to the circumferential moving assembly 26. The circumferential moving assembly 26 is arranged between a pre-set plate 25 fixed to the bottom plate 21 and a top frame 27. A limiting assembly 28 is arranged on the bottom plate 21, which is arranged corresponding to the circumferential moving assembly 26. The circumferential side-shifting mechanism 2 can freely control the rotation direction of the side-turning frame 23 according to the width of the mine, so that the supporting assembly 24 can better abut against the bottom of the mine.

[0024] As a preferred embodiment, as Figure 4As shown, a footrest 241 is rotatably provided at the lower end of the tipping frame 23, and a connecting flap is provided at the end position of the tipping frame 23. One end of the footrest 241 is connected to the connecting flap through a hydraulic cylinder 242, and the end of the footrest 241 away from the hydraulic cylinder 242 is connected to the connecting flap through a telescopic spring 243. The cooperation of the hydraulic cylinder 242 and the telescopic spring 243 facilitates the footrest 241 to fully adhere to the ground inside the mine, effectively reducing the sliding of the support in the well.

[0025] In this embodiment, as Figure 5 shown, the circumferential movement assembly 26 includes: a first runner 262, a driving wheel 265, and a fourth runner 266. Among them, a rotating shaft 261 is rotatably provided inside the top frame 27. The first runner 262 is provided on the rotating shaft 261, and a second runner 263 is fixed at one end of the rotating shaft 261, and a third runner 264 is fixed at the other end thereof. One end of the second runner 263 located inside the top frame 27 is fixedly axially connected with a transverse runner. The transverse runner is meshed and driven with the driving wheel 265, and a plurality of fourth runners 266 are rotatably provided inside the pre-set plate 25. The third runner 264 is meshed and driven with the fourth runner 266. One side of the fourth runner 266 is rotatably provided inside the pre-set plate 25 through a rocker 267, and the other end of the rocker 267 is rotatably provided inside the upper end of the tipping frame 23;

[0026] That is to say, the rotation direction of the driving wheel 265 can be controlled according to the width of the advanced roadway, indirectly controlling the rotation direction of the tipping frame 23. When the roadway width is small, the driving wheel 265 rotates clockwise, and the lower side of the tipping frame 23 contracts towards the inside of the support; in the opposite case, the driving wheel 265 rotates counterclockwise, and the lower side of the tipping frame 23 expands towards the outside of the support, which is beneficial for operations within different roadway widths.

[0027] In this embodiment, as Figure 6 shown, the limiting assembly 28 includes: a limiting runner 284. A base 281 is fixed at the upper end of the bottom plate 21. A bushing 282 is fixed inside the base 281. A rack 283 is vertically slidably provided inside the bushing 282. The limiting runner 284 is fixed at the top position of the rack 283, and a single hole is provided at the middle position of the bushing 282. The rack 283 is meshed with a gear 285 at the position of the single hole. The gear 285 can control the lifting of the limiting runner 284, thereby controlling the rotation of the first runner 262 and the third runner 264, preventing the movement of the support assembly 24 during the support process.

[0028] As a preferred embodiment, the axial opening shape of the bushing 282 is rectangular, which is used to limit the rotation of the rack 283 inside the bushing 282, and further limit the rotation of the limiting runner 284.

[0029] In this embodiment, as Figure 7 shown, the lifting mechanism 3 includes: a first hydraulic jack 31 and a second hydraulic jack 32. Among them, one end of the first hydraulic jack 31 is fixed to the fuselage 1, and the other end thereof is fixed to the upper baffle 4. The lower end of the second hydraulic jack 32 is fixed to the fuselage 1, and the upper end thereof is hinged with a hinge frame 33. There are two second hydraulic jacks 32. The other ends of the hinge frames 33 are all hinged to the other side of the upper baffle 4, and columns 34 are hinged to the side of the hinge frames 33 away from the second hydraulic jack 32. The two columns 34 are fixed to the upper end surface of the fuselage 1;

[0030] In other words, the elongation of the first hydraulic jack 31 can be controlled according to the height of the advanced roadway. When the first hydraulic jack 31 elongates, the second hydraulic jack 32 contracts, so that the upper baffle 4 is in a horizontal state to support the top wall. After the support is completed, the second hydraulic jack 32 elongates, and the upper baffle 4 descends at the unmined end of the mine, and gravel and the like can descend along the side protection assembly 6 to one side of the support.

[0031] In this embodiment, the side protection assembly 6 includes: side baffle plates 61. The side baffle plates 61 are rotatably arranged on the guide frame 5. The side baffle plates 61 are configured to be two. The two side baffle plates 61 are respectively connected to the fuselage 1 through a third hydraulic jack 62 and a fourth hydraulic jack 63, and a groove is provided at the intersection of the side baffle plates 61, and the two side baffle plates 61 can be attached to each other when rotating. The side protection assembly 6 can effectively support the unmined side wall and the two side walls of the support, and prevent gravel and the like from falling and affecting the mining work.

[0032] During specific implementation, when the rib-protecting and roof-strengthening advanced support operates, first place the support at the advanced roadway, control the rotation direction of the driving wheel 265 according to the width of the on-site mine roadway, and the side-turning frame 23 rotates inwards or outwards, so that the support assembly 24 expands and abuts against the lower end of the shaft wall. Then, control the elevation of the first hydraulic jack 31 according to the height of the on-site mine roadway, and the second hydraulic jack 32 contracts, so that the upper baffle 4 is in a horizontal state and abuts against the mine roof. Then start the third hydraulic jack 62 and the fourth hydraulic jack 63, and the side baffle plates 61 expand to support the unmined side of the advanced roadway and the two sides of the support. After the support is completed, the second hydraulic jack 32 elongates, the upper baffle 4 inclines towards the unmined side, and gravel and the like can fall along the side baffle plates 61. At the same time, the side-turning frame 23 rotates and contracts in the opposite direction, the third hydraulic jack 62 and the fourth hydraulic jack 63 contract, and the side baffle plates 61 also contract until the support is withdrawn.

[0033] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A rib protection and roof strengthening advanced support under mining conditions in a rock burst mine, characterized in that: It includes a fuselage, a circumferential side-shifting mechanism, and a lifting mechanism. The circumferential side-shifting mechanism is slidably arranged on the lower side of the fuselage. A lifting mechanism is installed at the upper end of the fuselage. The output end of the lifting mechanism is fixed with an upper gangue shield, which is used for rib protection at the top of the mine. A side protection component is rotatably arranged on the guide frame on the fuselage, and the side protection component is used for rib spalling in the mine. The circumferential side-shifting mechanism includes a bottom plate, a support component, a circumferential movement component, and a limit component. The bottom plate is fixed to the fuselage. A plurality of guide receiving balls are evenly distributed circumferentially on the bottom plate. A tipping frame is slidably arranged in the guide receiving ball, and the tipping frame is arranged corresponding to each guide receiving ball. One end of the tipping frame is connected to the support component, and the other end is connected to the circumferential movement component. The circumferential movement component is arranged between a pre-set plate fixed to the bottom plate and a top frame. A limit component is arranged on the bottom plate and is arranged corresponding to the circumferential movement component. The circumferential movement component includes a first runner, a driving wheel, and a fourth runner. A rotating shaft is rotatably arranged inside the top frame. The first runner is arranged on the rotating shaft. One end of the rotating shaft is fixed with a second runner, and the other end is fixed with a third runner. One end of the second runner located inside the top frame is fixedly axially connected with a transverse runner. The transverse runner is meshed and driven with a driving wheel. A plurality of fourth runners are rotatably arranged inside the pre-set plate. The third runner is meshed and driven with the fourth runner. One side of the fourth runner is rotatably arranged inside the pre-set plate through a rocker seat, and the other end of the rocker seat is rotatably arranged inside the upper end of the tipping frame. The lifting mechanism includes a first hydraulic jack and a second hydraulic jack. One end of the first hydraulic jack is fixed to the fuselage, and the other end is fixed to the upper gangue shield. The lower end of the second hydraulic jack is fixed to the fuselage, and the upper end is hinged with a hinge frame. There are two second hydraulic jacks. The other ends of the hinge frames are both hinged to the other side of the upper gangue shield. Columns are hinged to the side of the hinge frames away from the second hydraulic jacks, and the two columns are fixed to the upper end surface of the fuselage.

2. The advanced support for rib protection and roof strengthening under the mining conditions of a rock burst mine according to claim 1, characterized in that: A foot support is rotatably arranged at the lower end of the tipping frame. A connecting flap is arranged at the end position of the tipping frame. One end of the foot support is connected to the connecting flap through a hydraulic cylinder, and the end of the foot support away from the hydraulic cylinder is connected to the connecting flap through a telescopic spring.

3. The advanced support for rib protection and roof strengthening under mining conditions in a rock burst mine according to claim 1, characterized in that: The limit component includes: a limit runner. A base is fixed to the upper end of the bottom plate. A bushing is fixed inside the base. A rack is vertically slidably arranged inside the bushing. A limit runner is fixed at the top end position of the rack. A single hole is opened at the middle position of the bushing. The rack is meshed with a gear at the position of the single hole.

4. The advanced support for rib protection and roof strengthening under mining conditions in a rock burst mine according to claim 1, characterized in that: The axial opening shape of the bushing is rectangular, which is used to limit the rotation of the rack inside the bushing.

5. The advanced support for rib protection and roof strengthening under the mining conditions of a rock burst mine according to claim 1, characterized in that: The side protection component includes side gangue shields. The side gangue shields are rotatably arranged on the guide frame. The side gangue shields are configured to be two. The two side gangue shields are respectively connected to the fuselage through a third hydraulic jack and a fourth hydraulic jack. A groove is arranged at the cross part of the side gangue shields, and the two side gangue shields can be attached when rotating.

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