Goaf retaining device

Abstract

This invention provides a goaf-side retaining device for preventing rockfall, comprising: a support mechanism and a rockfall-preventing mechanism; the support mechanism includes a base, a telescopic support, and a support beam, one end of the telescopic support being connected to the base and the other end to the support beam, the support beam being used to abut against the roof of the goaf; the rockfall-preventing mechanism is located on one side of the support mechanism, a winding assembly including a roller and a first driving member, the roller being located on the support beam, the first driving member being used to drive the roller to rotate; the support assembly includes a support plate and a second driving member, the support plate being rotatably connected to the base, the second driving member being used to drive the support plate to unfold or retract relative to the base; the rockfall-preventing assembly includes a rockfall-preventing net, the fixed end of the rockfall-preventing net being connected to the support plate, and the free end of the rockfall-preventing net being wound around the roller. This invention uses the roller to unwind or wind up the rockfall-preventing net, keeping the net in a taut state, effectively blocking rockfalls falling from the goaf side, while also effectively preventing rockfalls from pressing down on or covering the base, thus improving the convenience of recovery.

Description

Technical Field

[0001] This invention relates to the field of coal mining technology, and in particular to a goaf retaining device for blocking coal. Background Technology

[0002] Goaf retention, as a pillarless roadway protection method, has significant advantages in the rational development of coal resources, improving coal extraction rate, extending mine service life, and alleviating the contradiction between mining and tunneling succession. When using goaf retention for mining, there is a problem of rockfall at the roof and roadway sides of the goaf. It is necessary to support the roof of the goaf and simultaneously block the falling rock from the roadway sides to prevent it from sliding into the roadway.

[0003] When using the goaf retention method for mining, the goaf needs to be supported by rock retaining supports. In existing technologies, multiple rock retaining supports are usually used as a group for support. The rock retaining supports are large in size, which is not conducive to transportation in the roadway. At the same time, the support columns on the side closest to the roadway wall are easily crushed by the roof, and the bottom of the supports are easily crushed or covered by falling coal gangue, making it difficult to recover the rock retaining supports after use. Summary of the Invention

[0004] This invention provides a goaf retaining device to solve the problem that existing goaf retaining supports are easily crushed or covered by goaf, making them difficult to recycle.

[0005] The present invention provides a rock-blocking device for roadway retention, comprising: a support mechanism and a rock-blocking mechanism;

[0006] The support mechanism includes a base, a telescopic bracket, and a support beam. One end of the telescopic bracket is connected to the base, and the other end of the telescopic bracket is connected to the support beam. The support beam is used to abut against the roof of the roadway.

[0007] The rock-blocking mechanism is located on one side of the support mechanism. The rock-blocking mechanism includes a rock-blocking assembly, a winding assembly, and a support assembly. The winding assembly includes a reel and a first driving member. The reel is located on the support beam, and the first driving member is used to drive the reel to rotate. The support assembly includes a support plate and a second driving member. The support plate is rotatably connected to the base, and the second driving member is used to drive the support plate to unfold or retract relative to the base.

[0008] The waste rock blocking assembly includes a waste rock blocking mesh, the fixed end of which is connected to the support plate, and the free end of which is wound around the reel. The reel is used to wind up or unwind the waste rock blocking mesh.

[0009] According to the present invention, a rock-blocking device for roadway retention is provided, wherein the rock-blocking assembly further includes a rock-blocking plate and a buffer assembly;

[0010] The number of the rock-blocking plates is two, and the two rock-blocking plates are arranged on opposite sides of the base. The two rock-blocking plates are connected by the buffer assembly.

[0011] According to the present invention, a goaf retaining device is provided, wherein the buffer assembly includes a buffer column, an elastic element and a limiting element;

[0012] The rock-blocking plate is provided with a through hole, which is adapted to the buffer post. The elastic element is sleeved on the buffer post. One end of the buffer post passes through the through hole of one of the rock-blocking plates, and the other end passes through the through hole of the other rock-blocking plate. The limiting member is provided at the end of the buffer post, and the elastic element is sandwiched between the two rock-blocking plates.

[0013] According to the present invention, a rock-blocking device for roadway retention is provided, wherein the rock-blocking plate near the rock-blocking net is movably connected to the base, and the rock-blocking plate away from the rock-blocking net is fixedly connected to the base.

[0014] According to the present invention, a rock-blocking device for roadway retention is provided, wherein the rock-blocking assembly further includes a side support plate and a third driving member;

[0015] The fixed end of the third driving member is connected to the rock-blocking plate, and the driving end of the third driving member is connected to the side support plate. The third driving member is used to drive the side support plate to move toward or away from the rock-blocking net.

[0016] According to the present invention, in a goaf retaining device, the driving end of the third driving member is hinged to the side support plate.

[0017] According to the present invention, a gob-side retaining device for blocking waste rock is provided, wherein the fixed end of the second driving member is connected to the waste rock blocking plate, and the driving end of the second driving member is hinged to the support plate.

[0018] According to the present invention, a goaf retaining device is provided, wherein two telescopic supports are spaced apart along the extension direction of the base;

[0019] The telescopic support includes a telescopic support column and a fourth driving component, which is used to drive the telescopic support column to rise or fall vertically.

[0020] According to the present invention, a gob-side retaining and rock-blocking device is provided, the gob-side retaining and rock-blocking device further includes a controller;

[0021] The controller is connected to the first drive unit and is used to control the first drive unit to rotate forward or reverse. The first drive unit drives the reel to rotate forward or reverse to wind up or unwind the rock-blocking net.

[0022] According to the present invention, a goaf retaining and rock-blocking device is provided, the goaf retaining and rock-blocking device further includes a lifting component, which is disposed on the support beam and is used to lift the goaf retaining and rock-blocking device.

[0023] The goaf retaining device provided by this invention has a telescopic bracket that drives a support beam to rise or fall vertically. A support plate is rotatably connected to a base. A roller is located on the support beam. The fixed end of the goaf retaining net is connected to the support plate, and the free end of the goaf retaining net is wound on the roller. The roller unwinds or winds the goaf retaining net. During use, the goaf retaining net is in a taut state, effectively blocking the goaf falling from the roadway side. At the same time, it can effectively prevent the goaf from pressing down on or covering the base, which is beneficial to improving the convenience of recycling the goaf retaining device. Attached Figure Description

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

[0025] Figure 1 This is one of the structural schematic diagrams of the goaf retaining and rock-blocking device provided by the present invention;

[0026] Figure 2 This is the second structural schematic diagram of the goaf retaining and rock-blocking device provided by the present invention (rock-blocking net not shown);

[0027] Figure 3 This is a schematic diagram showing the unfolded support plate portion of the rock-blocking mechanism provided by the present invention;

[0028] Figure 4 This is a schematic diagram of the support plate of the rock-blocking mechanism provided by the present invention fully unfolded;

[0029] Figure 5 This is a schematic diagram of the structure of the buffer component provided by the present invention;

[0030] Reference numerals: 1: Support mechanism; 11: Base; 12: Telescopic bracket; 13: Support beam; 2: Waste rock blocking mechanism; 21: Winding assembly; 211: Roller; 212: First driving component; 22: Support assembly; 221: Support plate; 222: Second driving component; 23: Waste rock blocking assembly; 231: Waste rock blocking net; 232: Waste rock blocking plate; 2321: Through hole; 233: Buffer assembly; 2331: Buffer column; 2332: Elastic component; 2333: Limiting component; 234: Side support plate; 235: Third driving component; 3: Lifting component. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] The following is combined with Figures 1 to 5 This invention describes an embodiment of a goaf-retaining and rock-blocking device.

[0034] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the goaf retaining and rock-blocking device provided in this embodiment of the invention includes: a support mechanism 1 and a rock-blocking mechanism 2; the support mechanism 1 includes a base 11, a telescopic support 12 and a support beam 13, one end of the telescopic support 12 is connected to the base 11, and the other end of the telescopic support 12 is connected to the support beam 13, and the support beam 13 is used to abut against the roof of the roadway. The waste rock blocking mechanism 2 is located on one side of the support mechanism 1. The waste rock blocking mechanism 2 includes a waste rock blocking assembly 23, a winding assembly 21, and a support assembly 22. The winding assembly 21 includes a roller 211 and a first driving member 212. The roller 211 is located on the support beam 13, and the first driving member 212 is used to drive the roller 211 to rotate. The support assembly 22 includes a support plate 221 and a second driving member 222. The support plate 221 is rotatably connected to the base 11, and the second driving member 222 is used to drive the support plate 221 to unfold or retract relative to the base 11. The waste rock blocking assembly 23 includes a waste rock blocking net 231. The fixed end of the waste rock blocking net 231 is connected to the support plate 221, and the free end of the waste rock blocking net 231 is wound on the roller 211. The roller 211 is used to wind up or unwind the waste rock blocking net 231.

[0035] Specifically, the gob-side retaining device includes a support mechanism 1 and a retaining mechanism 2. The length direction of the support mechanism 1 is consistent with the extension direction of the roadway. The support mechanism 1 includes a base 11, a telescopic support 12, and a support beam 13. The telescopic support 12 is arranged vertically, with its fixed end connected to the base 11 and its movable end connected to the support beam 13. The telescopic support 12 can extend or retract vertically, and can drive the support beam 13 to move vertically to adjust its height. The telescopic support 12 drives the support beam 13 to move upward vertically until it abuts against the roof of the roadway, thus providing roof support. The telescopic support 12 also drives the support beam 13 to move downward vertically, adjusting the overall height of the gob-side retaining device, facilitating its movement or retrieval within the roadway. For ease of description, the goaf retaining device will be referred to as the goaf retaining device in the following text.

[0036] The rock-blocking mechanism 2 is located on one side of the support mechanism 1, opposite to the sidewall of the roadway. The rock-blocking mechanism 2 includes a rock-blocking assembly 23, a winding assembly 21, and a support assembly 22. The rock-blocking assembly 23 includes a rock-blocking net 231, the width of which matches the length of the support mechanism 1, and the length of which is adjustable. The winding assembly 21 is located on the support beam 13 and includes a reel 211 and a first driving member 212. The reel 211 is horizontally positioned, and two connecting blocks are spaced apart along the length of the support beam 13. Each connecting block has a shaft hole that matches the reel 211, with both ends of the reel 211 located in the two shaft holes. The first driving component 212 can be a handle, a motor, etc. For example, the first driving component 212 can be a handle, which is connected to the end of the scroll 211, and the scroll 211 can be rotated by rotating the handle; or the first driving component 212 can be a motor, with the output shaft of the motor connected to the scroll 211, and the scroll 211 can be rotated by the motor.

[0037] The support assembly 22 is located at the bottom of the support mechanism 1. The support assembly 22 includes a support plate 221 and a second driving member 222. The length of the support plate 221 matches the length of the support mechanism 1, and the width of the support plate 221 is set according to actual needs. One end of the support plate 221 is rotatably connected to the side of the base 11. The second driving member 222 can drive the support plate 221 to rotate toward or away from the base 11. The second driving member 222 drives the support plate 221 to rotate toward the side away from the base 11 until the support plate 221 can be in a horizontal state; the second driving member 222 drives the support plate 221 to rotate toward the side closer to the base 11 until the support plate 221 can be retracted toward the side of the base 11.

[0038] The fixed end of the rock-blocking mesh 231 is connected to the end of the support plate 221 away from the base 11. The free end of the rock-blocking mesh 231 is wound on the reel 211. By rotating the reel 211, the rock-blocking mesh 231 can be wound up and down to meet usage requirements. For ease of description, rotating the reel 211 clockwise unwinds the rock-blocking mesh 231; rotating the reel 211 counterclockwise winds up the rock-blocking mesh 231. The rock-blocking mesh 231 is a commonly used steel wire mesh or iron wire mesh in roadway support in coal mines and other similar applications. The following is a detailed description of the use of the rock-blocking device.

[0039] The rock-blocking device is placed near the sidewall of the goaf in the roadway, with the rock-blocking mechanism 2 facing the sidewall. The telescopic support 12 extends vertically to move the support beam 13 upwards. Simultaneously, the first drive member 212 drives the reel 211 to rotate clockwise to unwind the rock-blocking net 231 until the support beam 13 abuts against the roof of the roadway. After the support beam 13 abuts against the roof, the rotation of the reel 211 ensures that the unfolded rock-blocking net 231 is in a taut state. After the support beam 13 abuts against the roof, the second drive member 222 drives the support plate 221 to rotate towards the side closer to the sidewall. At the same time, the first drive member 212 drives the reel 211 to rotate clockwise to continue unwinding the rock-blocking net 231 until the bottom surface of the support plate 221 is pressed against the floor of the roadway. At this point, unwinding the rock-blocking net 231 stops. Understandably, the support beam 13 abuts against the roof of the roadway, the support plate 221 is tightly attached to the bottom of the roadway, the unfolded rock-blocking net 231 is in a taut state, and the rock-blocking net 231 forms a certain angle with the roadway side.

[0040] The support beam 13 effectively supports the roof of the goaf, while the rock-blocking net 231 blocks rockfalls, preventing them from pressing down on or covering the base 11, and also preventing them from falling into the roadway. It is understood that multiple rock-blocking devices are placed sequentially along the roadway's extension direction. After mining operations are completed, the telescopic support 12 retracts, causing the support beam 13 to descend vertically. Simultaneously, the first drive component 212 drives the reel 211 to reverse and wind up the rock-blocking net 231, while the second drive component 222 drives the support plate 221 to rotate towards the base 11 until the support beam 13 moves to its initial position, the support plate 221 rotates to its initial position, and the rock-blocking net 231 is wound onto the reel 211. During use, the rotation of the roller 211 keeps the rock-blocking net 231 in a taut state. The rock-blocking net 231 can effectively block the rock falling from the roadway side and prevent the rock from pressing down on or covering the base 11. After the rock-blocking device is used, it can be easily recycled.

[0041] In this embodiment of the invention, the telescopic bracket 12 drives the support beam 13 to rise or fall vertically. The support plate 221 is rotatably connected to the base 11. The roller 211 is located on the support beam 13. The fixed end of the rock-blocking net 231 is connected to the support plate 221. The free end of the rock-blocking net 231 is wound on the roller 211. The rock-blocking net 231 is unwound or wound up by the roller 211. During use, the rock-blocking net 231 is in a taut state, effectively blocking the rock falling from the roadway side. At the same time, it can effectively prevent the rock from pressing down on or covering the base 11, which is conducive to improving the convenience of recycling the rock-blocking device along the goaf.

[0042] like Figure 1 , Figure 2 and Figure 3 As shown, in an optional embodiment, the waste rock blocking assembly 23 further includes a waste rock blocking plate 232 and a buffer assembly 233; there are two waste rock blocking plates 232, which are disposed on opposite sides of the base 11 and connected by the buffer assembly 233.

[0043] Specifically, there are two rock-blocking plates 232, both with identical shapes, spaced apart along the width of the base 11. For example, the base 11 has opposing first and second sides. The side of the base 11 facing the roadway side is defined as the first side of the base 11. The bottom of one rock-blocking plate 232 is connected to the first side of the base 11, and the bottom of the other rock-blocking plate 232 is connected to the second side of the base 11. It can be understood that the opposing sides and top surface of the rock-blocking plates 232 are suspended in the air.

[0044] The two rock-blocking plates 232 are connected by a buffer assembly 233. The buffer assembly 233 can be a buffer pad sandwiched between the two rock-blocking plates 232; the buffer assembly 233 can also be a spring sandwiched between the two rock-blocking plates 232. The buffer assembly 233 can play a buffering role.

[0045] Smaller pieces of gangue may pass through the mesh of the gangue-blocking mesh 231. The gangue-blocking plate 232 can effectively prevent gangue passing through the mesh of the gangue-blocking mesh 231 from falling into the tunnel. In addition, larger pieces of gangue impacting the gangue-blocking mesh 231 continue to move under the action of inertial force and impact the gangue-blocking plate 232. The buffer component 233 can effectively absorb the horizontal impact energy, buffer the lateral impact of gangue on the gangue-blocking device, and ensure the stability of the gangue-blocking device.

[0046] In this embodiment of the invention, the gangue baffle 232 can effectively prevent small-sized gangue from falling into the roadway after passing through the gangue baffle net 231, and the buffer component 233 can absorb the horizontal impact energy, buffer the lateral impact of gangue on the gangue baffle device, and ensure the stability and reliability of the gangue baffle device.

[0047] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, in an optional embodiment, the buffer assembly 233 includes a buffer post 2331, an elastic element 2332, and a limiting element 2333; the baffle plate 232 is provided with a through hole 2321, which is adapted to the buffer post 2331, and the elastic element 2332 is sleeved on the buffer post 2331; one end of the buffer post 2331 passes through the through hole 2321 of one baffle plate 232, and the other end passes through the through hole 2321 of another baffle plate 232; the limiting element 2333 is provided at the end of the buffer post 2331, and the elastic element 2332 is sandwiched between the two baffle plates 232.

[0048] Specifically, the two rock-blocking plates 232 are defined as the first rock-blocking plate and the second rock-blocking plate, respectively. The bottom of the first rock-blocking plate can be connected to the first side of the base 11 by welding, screwing or snapping, etc., and the bottom of the second rock-blocking plate can be connected to the second side of the base 11 by welding, screwing or snapping, etc.

[0049] Both the first and second baffle plates are provided with through holes 2321. The number of through holes 2321 is set according to requirements. For example, both the first and second baffle plates are provided with two through holes 2321, which are spaced apart in the horizontal direction. The diameter of the through holes 2321 is adapted to the diameter of the buffer post 2331. The elastic element 2332 can be a columnar spring, which is sleeved on the buffer post 2331. One end of the buffer post 2331 passes through the through hole 2321 of the first baffle plate, and the other end of the buffer post 2331 passes through the through hole 2321 of the second baffle plate. A limiting element 2333 is installed at each end of the buffer post 2331 to limit the buffer post 2331. The spring is sleeved on the buffer post 2331 and sandwiched between two rock-blocking plates 232. One end of the spring abuts against the inner wall surface of the first rock-blocking plate, and the other end of the spring abuts against the inner wall surface of the second rock-blocking plate.

[0050] Large-diameter waste rock falling from the side of the tunnel first impacts the waste rock retaining net 231, and then, under the action of inertial force, impacts the two waste rock retaining plates 232. The spring located between the two waste rock retaining plates 232 can effectively buffer the lateral impact force exerted by the waste rock on the waste rock retaining device. The spring can effectively absorb the impact energy, and at the same time, the spring's rebound force allows the waste rock and waste rock retaining net 231 to separate from the first waste rock retaining plate, and the spring can return to its relaxed state. After each impact, the buffer component 233 can effectively absorb the impact energy and return to its initial state after the waste rock retaining plate 232 is impacted, thereby effectively ensuring the stability of the waste rock retaining device and the reliability of blocking waste rock.

[0051] In this embodiment of the invention, the elastic element 2332 is sleeved on the buffer column 2331. The two ends of the buffer column 2331 are respectively provided with through holes 2321 of the two rock-blocking plates 232. Limiting elements 2333 are installed at the two ends of the buffer column 2331 to limit the buffer column 2331. The elastic element 2332 is sandwiched between the two rock-blocking plates 232. The elastic element 2332 can effectively buffer the lateral impact force of the rock and ensure the stability and reliability of the rock-blocking device support.

[0052] In an optional embodiment, the retaining plate 232 near the retaining net 231 is movably connected to the base 11, and the retaining plate 232 away from the retaining net 231 is fixedly connected to the base 11.

[0053] Specifically, the retaining plate 232 closer to the retaining mesh 231 is the first retaining plate, and the retaining plate 232 farther away from the retaining mesh 231 is the second retaining plate. The bottom of the first retaining plate can be movably connected to the first side of the base 11 through a hinge, and the bottom of the second retaining plate can be fixedly connected to the second side of the base 11 by welding.

[0054] The first retaining plate is movably connected to the base 11, and the second retaining plate is fixedly connected to the base 11. When the rock impacts the first retaining plate, it moves towards the second retaining plate. The spring effectively absorbs the impact energy. The second retaining plate, fixedly connected to the base 11, effectively resists the impact force transmitted by the first retaining plate, ensuring the stability of both retaining plates 232. The first retaining plate, movably connected to the base 11, can rotate at a small angle. The spring's rebound force causes the first retaining plate to deflect slightly towards the roadway side, allowing the rock and retaining net 231 to separate from the first retaining plate 232, and the spring returns to its relaxed state. After each impact, the buffer assembly 233 effectively absorbs the impact energy and returns to its initial state, thus effectively ensuring the stability of the retaining device and the reliability of the rock-blocking mechanism.

[0055] like Figure 2 , Figure 3 and Figure 4 As shown, in an optional embodiment, the rock-blocking assembly 23 further includes a side support plate 234 and a third driving member 235; the fixed end of the third driving member 235 is connected to the rock-blocking plate 232, and the driving end of the third driving member 235 is connected to the side support plate 234. The third driving member 235 is used to drive the side support plate 234 to move toward or away from the rock-blocking net 231.

[0056] Specifically, the fixed end of the third driving member 235 is connected to the rock-blocking plate 232, and the driving end of the third driving member 235 is connected to the side support plate 234. The third driving member 235 can drive the side support plate 234 to move towards the rock-blocking net 231 until the side support plate 234 is in contact with the rock-blocking net 231. The third driving member 235 can also drive the side support plate 234 to move towards the rock-blocking plate 232. The length and width of the side support plate 234 are set according to requirements.

[0057] The third driving component 235 can be a device capable of telescopic movement, such as a hydraulic cylinder, pneumatic cylinder, electric actuator, or hydraulic jack. For example, the third driving component 235 can be a hydraulic jack. The number of hydraulic jacks can be one or more, for example, two hydraulic jacks. The two hydraulic jacks are horizontally spaced apart on the baffle plate 232, and the distance between the two hydraulic jacks is adapted to the length of the side support plate 234. The piston rod of the hydraulic jack is connected to the side support plate 234.

[0058] During use, the side support plate 234 is in contact with the rock-blocking net 231. As rock accumulates on the rock-blocking net 231, it deforms towards the side of the rock-blocking plate 232. At this time, the third driving component 235 can extend to drive the side support plate 234 towards the sidewall, thereby pushing the rock off the rock-blocking net 231. The rock slides down the slope where the rock-blocking net 231 is located to the bottom. By using the side support plate 234 to lift the rock-blocking net 231 and push off the rock, deformation or damage to the rock-blocking net 231 during use can be effectively prevented, ensuring the reliability of the rock-blocking net 231 in blocking rock. After the waste rock blocking device is used, the third drive unit 235 drives the side support plate 234 to move toward the waste rock blocking plate 232 so as to facilitate the recovery of the waste rock blocking device.

[0059] In this embodiment of the invention, the third driving member 235 drives the side support plate 234 to move toward the direction close to the retaining net 231 until the side support plate 234 is in contact with the retaining net 231. The side support plate 234 helps the retaining net 231 to be in a taut state. The side support plate 234 lifts toward one side of the retaining net 231, which can push off the accumulated gangue on the retaining net 231, effectively ensuring the reliability of the retaining net 231.

[0060] In an optional embodiment, the drive end of the third drive member 235 is hinged to the side support plate 234.

[0061] Specifically, the side support plate 234 has a hinge on the side facing the third drive member 235. The hinge includes a hinge shaft and a mounting base. The mounting base has a shaft hole and is fixed to the side support plate 234. The hinge shaft is rotatably connected to the shaft hole and is also connected to the drive end of the third drive member 235. The mounting base rotates relative to the hinge shaft, thereby driving the side support plate 234 to rotate. During use, the side support plate 234 is always parallel to the rock-blocking mesh 231, which can effectively prevent the rock-blocking mesh 231 from being punctured by the end of the side support plate 234 under the impact force of the rock, ensuring the reliability of the rock-blocking mesh 231.

[0062] like Figure 3 and Figure 4 As shown, in an optional embodiment, the fixed end of the second driving member 222 is connected to the baffle plate 232, and the driving end of the second driving member 222 is hinged to the support plate 221.

[0063] Specifically, the second driving component 222 can be a device capable of telescopic movement, such as a hydraulic cylinder, pneumatic cylinder, electric actuator, or hydraulic jack. For example, the second driving component 222 can also be a hydraulic jack. The number of hydraulic jacks can be one or more, for example, two hydraulic jacks. The two hydraulic jacks are horizontally spaced apart on the baffle plate 232, and the distance between the two hydraulic jacks is adapted to the length of the support plate 221. The piston rod of the hydraulic jack is hinged to the support plate 221.

[0064] For example, a connecting seat is provided on the side of the support plate 221 facing the retaining plate 232. The connecting seat has two shaft holes, and the end of the piston rod is located between the two shaft holes. After the pin passes through the shaft hole of the connecting seat and the shaft hole of the piston rod, a cotter pin is inserted into the pin hole of the pin to realize the hinge connection between the hydraulic jack and the support plate 221. By extending or retracting the piston rod of the hydraulic jack, the rotation angle of the support plate 221 can be flexibly adjusted.

[0065] One end of the support plate 221 is rotatably connected to the base 11, and the inner wall surface of the support plate 221 is hinged to the driving end of the third driving member 235. The rotation angle of the support plate 221 can be flexibly adjusted through the third driving member 235, which is beneficial to the convenience of unfolding and retracting the support plate 221.

[0066] like Figure 1 and Figure 2 As shown, in an optional embodiment, two telescopic supports 12 are spaced apart along the extension direction of the base 11; the telescopic support 12 includes a telescopic support column and a fourth driving member, which is used to drive the telescopic support column to rise or fall in the vertical direction.

[0067] Specifically, two telescopic supports 12 are spaced apart along the extension direction of the base 11, and a baffle plate 232 is located between the two telescopic supports 12. Each telescopic support 12 includes a telescopic support column and a fourth driving member. The telescopic support column includes a fixed support column and a movable support column, which are slidably connected. The top of the movable support column is connected to the support beam 13, and the movable support column can slide relative to the fixed support column in the vertical direction, thereby driving the support beam 13 to rise or fall in the vertical direction. The fourth driving member can drive the movable support column to extend or retract in the vertical direction to adjust the height of the support beam 13.

[0068] The two telescopic supports 12 extend or retract synchronously. The two telescopic supports 12 help to stabilize the support beam 13 supporting the top plate, and at the same time facilitate the installation of a rock baffle 232 in the area between the two telescopic supports 12.

[0069] In an optional embodiment, the rock-blocking device along the goaf also includes a controller; the controller is connected to the first drive member 212, and the controller is used to control the first drive member 212 to rotate forward or reverse, and the first drive member 212 drives the reel 211 to rotate forward or reverse, so as to wind up or unwind the rock-blocking net 231.

[0070] Specifically, the first driving component 212 is a motor, which is connected to a controller. The controller controls the motor to rotate forward or backward, and the motor drives the winding shaft 211 to rotate forward or backward to wind up or unwind the retaining net 231 to meet the usage requirements.

[0071] For example, when placing the rock-blocking device, the telescopic bracket 12 drives the support beam 13 to move upward in the vertical direction, the controller controls the motor to rotate forward, the motor drives the roller 211 to rotate forward to unwind the rock-blocking net 231, and after the support beam 13 abuts against the top plate, it ensures that the rock-blocking net 231 is in a taut state.

[0072] After the support beam 13 moves into position along the height direction, the second drive unit 222 drives the support plate 221 to rotate towards the side closer to the roadway wall. At the same time, the controller controls the motor to rotate forward, and the motor drives the reel 211 to rotate forward to continue unwinding the retaining mesh 231 until the support plate 221 is close to the bottom plate of the roadway. At this time, the unfolded retaining mesh 231 is tilted. Then the third drive unit 235 drives the side support plate 234 to move towards the retaining mesh 231 until the side support plate 234 is in contact with the retaining mesh 231. The side support plate 234 supports the retaining mesh 231. After the side support plate 234 moves into position, the controller controls the motor to rotate forward or reverse to tension the retaining mesh 231, so that the retaining mesh 231 is in a taut state.

[0073] When the gangue blocking device is in use and the gangue blocking net 231 is in a loose state due to the impact of gangue for a long time, the controller controls the motor to reverse, and the motor drives the reel 211 to reverse and rewind the gangue blocking net 231, so as to ensure that the gangue blocking net 231 is always in a taut state and plays an effective blocking role.

[0074] like Figure 2 As shown, in an optional embodiment, the gob-side retaining and retaining device further includes a lifting component 3, which is disposed on the support beam 13 and is used to lift the gob-side retaining and retaining device.

[0075] Specifically, the lifting element 3 can be a lifting ring, and the number of lifting rings is set according to requirements. For example, two lifting rings can be spaced apart along the length of the support beam 13 on the side of the support beam 13 facing the rock-blocking net 231. Two lifting rings can also be set on the side of the support beam 13 away from the rock-blocking net 231. One end of the lifting rope is connected to the lifting equipment, and the other end of the lifting rope is connected to the lifting ring. The multiple lifting elements 3 set on the support beam 13 facilitate the transfer of the rock-blocking device.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for retaining waste rock along a goaf, characterized in that, include: Support mechanism and rock-blocking mechanism; The support mechanism includes a base, a telescopic bracket, and a support beam. One end of the telescopic bracket is connected to the base, and the other end of the telescopic bracket is connected to the support beam. The support beam is used to abut against the roof of the roadway. The rock-blocking mechanism is located on one side of the support mechanism. The rock-blocking mechanism includes a rock-blocking assembly, a winding assembly, and a support assembly. The winding assembly includes a reel and a first driving member. The reel is located on the support beam, and the first driving member is used to drive the reel to rotate. The support assembly includes a support plate and a second driving member. The support plate is rotatably connected to the base, and the second driving member is used to drive the support plate to unfold or retract relative to the base. The waste rock blocking assembly includes a waste rock blocking mesh, the fixed end of which is connected to the support plate, and the free end of which is wound around the reel. The reel is used to wind up or unwind the waste rock blocking mesh. The rock-blocking assembly further includes a rock-blocking plate and a buffer assembly; the number of rock-blocking plates is two, the two rock-blocking plates are disposed on opposite sides of the base, and the two rock-blocking plates are connected by the buffer assembly; The rock-blocking assembly further includes a side support plate and a third driving member; the fixed end of the third driving member is connected to the rock-blocking plate, and the driving end of the third driving member is connected to the side support plate. The third driving member is used to drive the side support plate to move toward or away from the rock-blocking mesh.

2. The goaf retaining and rock-blocking device according to claim 1, characterized in that, The buffer assembly includes a buffer post, an elastic element, and a limiting element; The rock-blocking plate is provided with a through hole, which is adapted to the buffer post. The elastic element is sleeved on the buffer post. One end of the buffer post passes through the through hole of one of the rock-blocking plates, and the other end passes through the through hole of the other rock-blocking plate. The limiting member is provided at the end of the buffer post, and the elastic element is sandwiched between the two rock-blocking plates.

3. The goaf retaining and rock-blocking device according to claim 2, characterized in that, The retaining plate near the retaining mesh is movably connected to the base, while the retaining plate away from the retaining mesh is fixedly connected to the base.

4. The goaf retaining and rock-blocking device according to claim 1, characterized in that, The driving end of the third driving member is hinged to the side support plate.

5. The goaf retaining and rock-blocking device according to claim 1, characterized in that, The fixed end of the second driving member is connected to the baffle plate, and the driving end of the second driving member is hinged to the support plate.

6. The goaf retaining and rock-blocking device according to claim 1, characterized in that, The two telescopic brackets are spaced apart along the extension direction of the base; The telescopic support includes a telescopic support column and a fourth driving component, which is used to drive the telescopic support column to rise or fall vertically.

7. The goaf retaining and rock-blocking device according to claim 1, characterized in that, The goaf retaining and rock-blocking device also includes a controller; The controller is connected to the first drive unit and is used to control the first drive unit to rotate forward or reverse. The first drive unit drives the reel to rotate forward or reverse to wind up or unwind the rock-blocking net.

8. The goaf retaining and rock-blocking device according to claim 1, characterized in that, The goaf retaining and rock-blocking device also includes a lifting component, which is located on the support beam and is used to lift the goaf retaining and rock-blocking device.

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