Green filling protection side

Abstract

The invention relates to the field of coal mining, in particular to a green filling protection side, and aims to solve the problems that the size of a protection side is inconvenient to change, and the risk that broken stones on the side wall fall cannot be effectively prevented, the following scheme is provided: the green filling protection side comprises a top plate and side plates arranged on two sides of the top plate; a plurality of length-adjustable supporting legs are installed on the bottom face of the top plate, a connecting structure used for being connected with the side plates and an adjusting structure used for driving the side plates to move are installed on the bottom face of the top plate, and a linkage mechanism used for driving the side plates to rotate when the side plates move is installed on the connecting mechanism. A mounting hole is formed in one end of the top plate. The size of the whole protection side can be conveniently adjusted, so that the protection side is not prone to being touched by the inner wall of a roadway in the moving process, broken stones falling on the side wall can be shielded in the side plate retracting process, and then the risk caused by falling of the broken stones is effectively avoided.

Description

Technical Field

[0001] The invention relates to the field of coal mining, in particular to a green filling and protection wall. Background Art

[0002] Green backfill mining is a diversified coal mining method developed based on the key layer theory. Not only coal can be used, but also gas, water and discharged gangue can be fully utilized, which can effectively avoid the formation of goaf. In the backfill mining process, in order to ensure the safety of the working space in the underground tunnel and prevent the falling of gravel, the tunnel needs to be supported. At present, traditional side guards are built in the tunnel. This kind of side guard is not only troublesome to disassemble and assemble, but also easily affected by the width of the tunnel when moving, which makes it difficult to build forward.

[0003] In addition, when the existing guardrail is dismantled, the loose gravel on the side wall of the tunnel is easily to fall and roll to the feet of the operator due to the loss of protection. The high-speed rolling gravel can also easily injure the operator. For this reason, this plan proposes a green filling guardrail. Summary of the invention

[0004] The green filling guard wall proposed by the present invention solves the problems in the prior art that the guard wall volume is inconvenient to change and cannot effectively prevent side wall gravel from falling.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A green filling guard comprises a top plate and side plates arranged on both sides of the top plate, a plurality of length-adjustable support feet are installed on the bottom surface of the top plate, a connecting structure for connecting the side plates and an adjusting structure for driving the side plates to move are installed on the bottom surface of the top plate, and a linkage mechanism for driving the side plates to rotate when the side plates move is installed on the connecting mechanism;

[0007] A mounting hole is formed at one end of the top plate, and the connecting mechanism comprises a transmission screw rotatably connected in the mounting hole and a mounting rod threadedly sleeved on the outer periphery of the transmission screw, and one end of the mounting rod extends out of the mounting hole and is hinged to the inner side wall of the side plate;

[0008] The linkage mechanism comprises a mounting plate arranged on the bottom surface of the top plate, a moving block slidably connected to the mounting plate, a connecting rod hinged to the bottom surface of the moving block, and a transmission member mounted on the mounting plate for driving the moving block to move when the moving block moves. A connecting block for connecting the mounting rod is fixed on the top surface of the mounting plate, and the other end of the connecting rod is hinged to the inner side wall of the side plate.

[0009] The adjusting mechanism is mounted on the bottom surface of the top plate and is used to drive the transmission screw to rotate;

[0010] The outer wall of the side plate is provided with a receiving groove, a receiving plate is provided in the receiving groove, and a reset member is installed between the bottom of the receiving plate and the receiving groove, so that the receiving plate can be closed into the receiving groove after extrusion and open out of the receiving groove after pressure relief.

[0011] Through the above technical solution, not only can the size of the entire guardrail be easily adjusted so that it is not easily touched by the inner wall of the tunnel during movement, but also the gravel falling from the side wall can be blocked during the retraction of the side panels, thereby effectively avoiding the risk of falling gravel.

[0012] As a further improvement of the above solution, a connecting groove is provided at the bottom of the mounting hole, the connecting block passes through the connecting groove and is fixedly connected to the bottom surface of the mounting rod, and the outer walls of the two long sides of the connecting block respectively abut against the two long sides of the connecting groove.

[0013] The above technical solution can prevent the connecting block from shaking in the connecting groove.

[0014] As a further improvement of the above scheme, a mounting groove arranged in the same direction as the transmission screw is formed on the bottom surface of the mounting plate, and the transmission member includes a linkage screw rotatably connected in the mounting groove and a rack arranged at one end of the mounting plate, the moving block is located in the mounting groove and threadedly sleeved on the outer periphery of the linkage screw, one end of the linkage screw extends to the outside of the mounting plate and is fixed with a gear meshing with the rack, and the rack is slidably connected to the mounting plate through a connecting member.

[0015] As a further improvement of the above scheme, the mounting plate is provided with a slide groove arranged in the same direction as the rack at one end thereof close to the rack, the connecting member includes a slide rod fixed in the slide groove, a slider movably sleeved on the outer periphery of the slide rod, and a return spring, one end of the slider is fixedly connected to the rack, one end of the return spring is fixedly connected to the slider, and the other end of the return spring is fixedly connected to the inner wall of one end of the slide groove.

[0016] Through the above technical solution, the rack can automatically return to its original position when the external pressure decreases.

[0017] As a further improvement of the above scheme, the transmission member also includes an abutment plate fixed to the bottom surface of the top plate and used to force the rack to move when the mounting plate moves. The abutment plate is a right-angled trapezoidal structure, and the inclined surface and upper bottom of the abutment plate are located on the side close to the rack, and the rack abuts against the inclined surface of the abutment plate.

[0018] Through the above technical solution, the rack can be forced to move relative to the mounting plate while following the movement of the mounting plate.

[0019] As a further improvement of the above scheme, the adjustment mechanism includes a fixed shaft rotatably connected to the top of the mounting hole and an operating rod arranged on the bottom surface of the base plate, one end of the transmission screw is transmission-connected to the fixed shaft, the bottom of the fixed shaft passes through a connecting groove and is rotationally connected to one side of the top surface of the operating rod, and a fixing hole coaxially arranged with the fixed shaft is opened on the top surface of the operating rod, and a limit assembly for limiting the relative rotation direction between the operating rod and the fixed shaft is installed in the fixing hole.

[0020] Through the above technical solution, the transmission screw can be driven to rotate conveniently and labor-savingly.

[0021] As a further improvement of the above scheme, the inner circle of the fixing hole is provided with a plurality of buffer holes, the outer periphery of the fixed shaft is provided with a plurality of limit holes, and the plurality of limit holes correspond to the plurality of buffer holes one by one, and the limit member includes a buffer spring and a limit block arranged in the buffer hole, one end of the buffer spring is fixedly connected to the inner wall of the buffer hole, the other end of the spring is fixedly connected to the limit block, the other end of the limit block is a right-angled triangle structure and is engaged in the limit hole, a positioning bolt is screwed on the bottom surface of the operating rod, and a positioning hole matching the positioning bolt is provided on the bottom surface of the top plate.

[0022] Through the above technical solution, the operating lever can drive the fixed shaft to rotate synchronously only when it rotates forward.

[0023] As a further improvement of the above scheme, a handle is rotatably connected to the side of the bottom surface of the operating rod away from the fixed axis, and the bottom surface of the operating rod is rotatably connected to an adjustment shaft coaxially arranged with the fixed axis, and the top of the adjustment shaft is fixedly connected to the bottom of the fixed axis, and a handle is fixed on the outer periphery of the adjustment shaft.

[0024] As a further improvement of the above scheme, connecting holes are opened on both sides of the storage groove, and the reset member includes a connecting shaft rotatably connected in the connecting hole and a torsion spring installed on the outer periphery of the connecting shaft, the connecting shaft and the connecting hole are coaxially arranged, one end of the connecting shaft extends into the storage groove and is fixedly connected to the side bottom of the receiving plate, and a pull rope for limiting the opening angle of the receiving plate is connected between the inner side wall of the receiving plate and the storage groove.

[0025] Through the above technical solution, the receiving plate can be automatically opened when the side plate is retracted, so as to block the gravel falling from the side wall.

[0026] As a further improvement of the above scheme, there are four supporting feet, and the four supporting feet are respectively installed on the bottom surface of the top plate near four corners. The supporting feet include a supporting screw fixed to the bottom surface of the top plate and a movable sleeve threadedly sleeved on the outer periphery of the bottom of the supporting screw. The bottom of the movable sleeve is a conical structure, and a plurality of handles are fixed to the outer periphery of the movable sleeve.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. By setting the top plate and side plates, the top and sides of the working surface can be supported, and the setting of the connecting mechanism and the adjusting mechanism can make the side plate position convenient and labor-saving adjustment after the top plate support is completed, so that it abuts against the side of the wall, thereby achieving the purpose of supporting the side wall. At the same time, the setting of the adjusting mechanism also facilitates the storage of the side plates and reduces their volume, so that the guardrail will not collide with the wall when moving underground.

[0029] 2. Through the setting of the linkage mechanism, the side panels can be driven to flip inwards during the process of storing the side panels, thereby further reducing the size of the space they occupy, and the side panels can automatically flip outwards during the process of extending outwards, which is convenient for staff to operate and use.

[0030] 3. Through the setting of the receiving plate, it can be automatically unfolded during the storage process of the side panels, so as to intercept the debris that falls after the side panels are separated from the side walls, preventing them from falling directly and injuring the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the present invention;

[0032] Figure 2 is a structural diagram of the bottom surface of the bottom plate of the present invention;

[0033] Figure 3 is a cross-sectional view of the top plate;

[0034] Figure 4 It is a structural schematic diagram of the operating rod and the limit block;

[0035] Figure 5 is a cross-sectional view of the side panel;

[0036] Figure 6 is a cross-sectional view of the mounting plate;

[0037] Figure 7 This is a schematic diagram of the structure after the top plate, mounting plate and operating rod are disassembled.

[0038] Description of main symbols:

[0039] 1. Top plate; 2. Side plate; 3. Mounting rod; 4. Support screw; 5. Movable sleeve; 6. Pull rope; 7. Receiving plate; 8. Storage groove; 9. Abutment plate; 10. Operating rod; 11. Handle 1; 12. Positioning bolt; 13. Adjusting shaft; 14. Handle; 15. Connecting groove; 16. Mounting plate; 17. Connecting rod; 18. Handle 2; 19. Rack; 20. Fixed shaft; 21. Transmission screw; 22. Gear; 23. Fixing hole; 24. Limit block; 25. Buffer hole; 26. Torsion spring; 27. Linkage screw; 28. Moving block; 29. ​​Slider; 30. Slide groove; 31. Sliding rod; 32. Mounting groove; 33. Positioning hole; 34. Limit hole; 35. Connecting block. DETAILED DESCRIPTION

[0040] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0041] Embodiment 1:

[0042] Please combine Figure 1 - Figure 7 The green filling guard of the present embodiment comprises a top plate 1 and side plates 2 arranged on both sides of the top plate 1. A plurality of length-adjustable supporting feet are installed on the bottom surface of the top plate 1. There are four supporting feet, and the four supporting feet are respectively installed at the bottom surface of the top plate 1 near four corners. The supporting feet comprise a supporting screw 4 fixed to the bottom surface of the top plate 1 and a movable sleeve 5 threadedly sleeved on the outer periphery of the bottom of the supporting screw 4. The bottom of the movable sleeve 5 is a conical structure, and a plurality of grips 18 are fixed on the outer periphery of the movable sleeve 5. When installed underground, the movable sleeve 5 can be rotated in different directions to adjust the length of the supporting feet to ensure that the top surface of the top plate 1 abuts against the top of the underground. When extending the supporting feet, hold the grips 18 and rotate the movable sleeve 5 clockwise, the movable sleeve 5 moves downward relative to the top plate 1, and the length of the supporting feet increases. Conversely, when the movable sleeve 5 is rotated counterclockwise, the length of the supporting feet shortens.

[0043] A connecting structure for connecting the side panels 2 and an adjusting structure for driving the side panels 2 to move are installed on the bottom surface of the top panel 1. A mounting hole is opened at one end of the top panel 1. The connecting mechanism includes a transmission screw 21 rotatably connected to the mounting hole and a mounting rod 3 threadedly sleeved on the outer periphery of the transmission screw 21. The outer periphery of the mounting rod 3 coincides with the mounting hole. One end of the mounting rod 3 extends to the outside of the mounting hole and is hinged to the inner side wall of the side panel 2. After the height adjustment of the top panel 1 is completed, the side panel is opened outward to support the side wall underground. When the side panel 2 is opened outward, the transmission screw 21 is rotated forward, and the mounting rod 3 moves toward the outside of the side panel 2 until the side panel 2 abuts against the side wall underground. Conversely, when the side panel 2 is retracted, the transmission screw 21 is rotated in the reverse direction.

[0044] The connecting mechanism is provided with a linkage mechanism for driving the side plate 2 to rotate when the side plate 2 moves. The linkage mechanism includes a mounting plate 16 provided on the bottom surface of the top plate 1, a moving block 28 slidably connected to the mounting plate 16, a connecting rod 17 hinged to the bottom surface of the moving block 28, and a transmission member installed on the mounting plate 16 for driving the moving block 28 to move when the moving block 28 moves. A connecting block 35 for connecting the mounting rod 3 is fixed to the top surface of the mounting plate 16, a connecting groove 15 is provided at the bottom of the mounting hole, and the connecting block 35 passes through the connecting groove 15 and is fixedly connected to the bottom surface of the mounting rod 3. The outer walls of the long sides of the connecting block 35 are They respectively contact with the long sides of the connecting groove 15 on both sides, and the other end of the connecting rod 17 is hinged with the inner wall of the side panel 2. When the mounting rod 3 moves, it will drive the mounting plate 16 to move synchronously. When the moving block 28 moves relative to the mounting plate 16 to the side away from the side panel 2, it can drive the side panel 2 to flip and close inward, thereby further reducing the space occupied by the entire guardrail and making it more convenient to move underground. Conversely, when the moving block 28 moves relative to the mounting plate 16 to the side close to the side panel 2, it will drive the side panel 2 to flip and open outward until the side panel 2 is perpendicular to the top panel.

[0045] The bottom surface of the mounting plate 16 is provided with a mounting groove 32 which is arranged in the same direction as the transmission screw 21. The transmission member includes a linkage screw 27 which is rotatably connected in the mounting groove 32 and a rack 19 which is arranged at one end of the mounting plate 16. The moving block 28 is located in the mounting groove 32 and is threadedly sleeved on the outer periphery of the linkage screw 27. One end of the linkage screw 27 extends to the outside of the mounting plate 16 and is fixed with a gear 22 which meshes with the rack 19. The rack 19 is slidably connected with the mounting plate 16 through a connecting member. The transmission member also includes an abutment plate 9 which is fixed to the bottom surface of the top plate 1 and is used to press the rack 19 to move when the mounting plate 16 moves. The abutment plate 9 is a right-angled trapezoidal structure, and the inclined surface and the upper bottom of the abutment plate 9 are located on a side close to the rack 19. The rack 19 abuts against the inclined surface of the abutment plate 9. When the rack 19 moves, it drives the gear 22 to rotate, thereby driving the linkage screw 27 to rotate. After that, it will drive the moving block 28 to move relative to the mounting plate 16. When the transmission screw 21 rotates forward, the mounting rod 3 moves to the outside of the top plate 1, the side plate 2 opens outward, and the mounting plate 16 also moves synchronously with the mounting rod 3. At this time, in the process of the rack 19 following the synchronous movement of the mounting plate 16, one end of the rack 19 slides along the inclined surface of the abutment plate 9, thereby forcing the rack 19 to move to the side away from the abutment plate 9, and then the rack 19 drives the gear 22 to rotate forward, and the linkage screw 27 also rotates forward accordingly, thereby driving the moving block 28 to move relative to the mounting plate 16 to the side close to the side plate 2, and the side plate 2 gradually flips outward until the rack 19 moves to abut against the upper bottom of the abutment plate 9, the side plate 2 flips to a state perpendicular to the top plate 1, and keeps the hysteresis state unchanged in the process of the side plate 2 continuing to move away from the top plate 1 until the side plate 2 abuts against the side wall of the well.

[0046] One end of the mounting plate 16 close to the rack 19 is provided with a slide groove 30 arranged in the same direction as the rack 19. The connecting member includes a slide rod 31 fixed in the slide groove 30, a slider 29 movably sleeved on the outer periphery of the slide rod 31, and a return spring. One end of the slider 29 is fixedly connected to the rack 19, and the rack 19 abuts against the side of the mounting plate 16 to prevent the rack 19 from shaking. One end of the return spring is fixedly connected to the slider 29, and the other end of the return spring is fixedly connected to the inner wall of one end of the slide groove 30. The setting of the connecting member enables the rack 19 to gradually return to its original position after losing the extrusion force, thereby driving the side plate 2 to automatically flip toward the inside of the top plate 1. During the outward flipping of the side panel 2, the rack 19 moves to the side away from the abutment plate 9, and the return spring is continuously compressed. When the side panel 2 moves toward the side close to the top panel 1 and one end of the rack 19 moves again to abut against the inclined surface of the abutment plate 9, the spring continuously restores its deformation, thereby driving the rack 19 to gradually move toward the side close to the abutment plate 9. At this time, the rack 19 drives the linkage gear 22 to reverse, and the moving block 28 moves relative to the mounting plate 16 to the side away from the side panel 2, so that the side panel 2 can be driven to flip inward during the process of being retracted, thereby further reducing the size of the space occupied by the guardrail.

[0047] The outer wall of the side plate 2 is provided with a receiving groove 8, and a receiving plate 7 is provided in the receiving groove 8. A reset member is installed between the bottom of the receiving plate 7 and the receiving groove 8, so that the receiving plate 7 is closed into the receiving groove 8 after extrusion, and is opened out of the receiving groove 8 after pressure relief. Connecting holes are provided on both sides of the receiving groove 8. The reset member includes a connecting shaft rotatably connected in the connecting hole and a torsion spring 26 installed on the outer periphery of the connecting shaft. The connecting shaft is coaxially arranged with the connecting hole, one end of the connecting shaft extends into the receiving groove 8 and is fixedly connected to the side bottom of the receiving plate 7, and a pull rope 6 for limiting the opening angle of the receiving plate 7 is connected between the inner side wall of the receiving plate 7 and the receiving groove 8. When the pull rope 6 is straightened, the angle between the receiving plate 7 and the side plate 2 is 30-45°. When the side plate 2 approaches the side wall of the well, after the receiving plate 7 touches the side wall, the side plate 2 is gradually pressed into the inner side of the receiving groove 8 as it continues to approach the side wall, and the torsion spring 26 is gradually compressed. When the side plate 2 separates from the side wall and gradually moves away from the side wall, the receiving plate 7 automatically opens outward under the action of the torsion spring 26, so that the top of the receiving plate 7 always contacts the side wall of the well before the pull rope 6 is straightened, so that the gravel falling from the side wall can be caught to prevent it from falling directly and rolling to the feet of the operator and injuring the operator. Until the pull rope 6 is completely straightened, the receiving plate 7 no longer continues to open outward, and then separates from the side wall as the side plate 2 continues to move away from the side wall.

[0048] The adjusting mechanism is installed on the bottom surface of the top plate 1 and is used to drive the transmission screw 21 to rotate. The adjusting mechanism includes a fixed shaft 20 rotatably connected to the top of the mounting hole and an operating rod 10 arranged on the bottom surface of the bottom plate 1. The outer periphery of the fixed shaft 20 is sleeved with an active bevel gear, and one end of the transmission screw 21 is fixedly connected to a driven bevel gear meshing with the active bevel gear. The bottom of the fixed shaft 20 passes through the connecting groove 15 and is rotatably connected to one side of the top surface of the operating rod 10. The top surface of the operating rod 10 is provided with a fixing hole 23 coaxially arranged with the fixed shaft 20, and a fixing hole 23 is installed in the fixing hole 23 for limiting the operation. A limit assembly for the relative rotation direction between the operating rod 10 and the fixed shaft 20 is provided. The fixed shaft 20 is connected to one side of the top surface of the operating rod 10, so that when the other end of the operating rod 10 is rotated, the fixed shaft 20 can be driven to rotate more effortlessly. After the height adjustment of the top plate 1 is completed, the operating rod 10 is rotated in the forward direction, thereby driving the fixed shaft 20 to rotate, and the fixed shaft 20 then drives the transmission screw 21 to rotate forward, and the mounting rod 3 moves toward the outside of the top plate 1, and then the side plate 2 can be driven to move toward the side away from the top plate 1 conveniently and effortlessly until the top plate 2 abuts against the side wall of the well.

[0049] Embodiment 2:

[0050] Combination Figure 4 and Figure 7 On the basis of Example 1, the present embodiment is further improved in that: a plurality of buffer holes 25 are provided in the inner circle of the fixing hole 23, a plurality of limiting holes 34 are provided in the outer periphery of the fixing shaft 20, and the plurality of limiting holes 34 correspond to the plurality of buffer holes 25 one by one, and the limiting member comprises a buffer spring and a limiting block 24 arranged in the buffer hole 25, one end of the buffer spring is fixedly connected to the inner wall of the buffer hole 25, the other end of the spring is fixedly connected to the limiting block 24, the other end of the limiting block 24 is a right triangle structure and is engaged in the limiting hole 34, a positioning bolt 12 is screwed on the bottom surface of the operating rod 10, and a positioning screw 12 is provided on the bottom surface of the top plate 1 The arrangement of the positioning hole 33, the limit block 24 and the limit hole 34 enables the right-angled side of the limit block 24 to abut against the side wall of the limit hole 34 when the operating rod 10 rotates forward, thereby driving the fixed shaft 20 to rotate synchronously. Conversely, when the operating rod 10 rotates in the reverse direction, the hypotenuse of the limit block 24 abuts against the side of the limit hole 34, resulting in the limit block 24 being unable to drive the fixed shaft 20 to rotate synchronously with the operating rod 10, thereby driving the fixed shaft 20 to reverse when the operating rod 10 reverses. When the operating rod 10 needs to be fixed, one end of the positioning bolt 12 is screwed into the positioning hole 33, so that the operating rod 10 can be locked to prevent the side plate 2 from accidentally moving.

[0051] Embodiment 3:

[0052] Combination Figure 2 - Figure 4 and Figure 7On the basis of Embodiment 1 and Embodiment 2, the present embodiment is further improved in that: a handle 11 is rotatably connected to the side of the bottom surface of the operating rod 10 away from the fixed shaft 20, and the setting of the handle 11 can facilitate the rotation of the operating rod 10, and an adjusting shaft 13 coaxially arranged with the fixed shaft 20 is rotatably connected to the bottom surface of the operating rod 10, and the top of the adjusting shaft 13 is fixedly connected to the bottom of the fixed shaft 20, and a handle 14 is fixed to the outer periphery of the adjusting shaft 13. When it is necessary to drive the fixed shaft 20 to reverse, the positioning bolt 12 is first screwed out of the positioning hole 33, and then the handle 14 is held to rotate the fixed shaft 20 in the opposite direction, so that the transmission screw 21 can be driven to reverse, and then the side panel 2 can be driven to move to the side close to the top panel 2, so as to facilitate the storage of the side panel 2.

[0053] Example 4

[0054] A method for using a green filling guard comprises the following steps:

[0055] Step 1: first move the guardrail to the area to be supported, and then adjust the lengths of the four supporting legs respectively so that the top plate 1 abuts against the top of the tunnel;

[0056] In step two, the operator stands under the top plate, and then adjusts the positions of the two side plates 2 respectively. When adjusting, the operating lever 10 is rotated forward, and the operating lever 10 is rotated back after each rotation angle, and then continues to rotate forward, and repeats this cycle, so that the side plates 2 can be driven to continuously approach the side walls of the tunnel, and the side plates 2 will gradually open outwards while approaching the side walls of the tunnel until the side plates 2 and the top plate 1 are in a vertical state, and finally the operating lever 10 is stopped after the side plates 2 abut against the side walls of the tunnel.

[0057] Step 3: After the side plate 2 is tightly pressed against the side wall of the laneway, screw the positioning bolt 12 into the positioning hole 33 to lock the operating rod 10, and then adjust the position of the other side plate in the same way.

[0058] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A green filling guard, comprising a top plate and side plates arranged on both sides of the top plate, characterized in that: The bottom surface of the top plate is equipped with a plurality of support feet with adjustable lengths, the bottom surface of the top plate is equipped with a connecting structure for connecting the side plates and an adjusting structure for driving the side plates to move, and the connecting mechanism is equipped with a linkage mechanism for driving the side plates to rotate when the side plates move; A mounting hole is formed at one end of the top plate, and the connecting mechanism comprises a transmission screw rotatably connected in the mounting hole and a mounting rod threadedly sleeved on the outer periphery of the transmission screw, and one end of the mounting rod extends out of the mounting hole and is hinged to the inner side wall of the side plate; The linkage mechanism comprises a mounting plate arranged on the bottom surface of the top plate, a moving block slidably connected to the mounting plate, a connecting rod hinged to the bottom surface of the moving block, and a transmission member mounted on the mounting plate for driving the moving block to move when the moving block moves. A connecting block for connecting the mounting rod is fixed on the top surface of the mounting plate, and the other end of the connecting rod is hinged to the inner side wall of the side plate. The adjusting mechanism is mounted on the bottom surface of the top plate and is used to drive the transmission screw to rotate; The outer wall of the side plate is provided with a receiving groove, a receiving plate is provided in the receiving groove, and a reset member is installed between the bottom of the receiving plate and the receiving groove, so that the receiving plate can be closed into the receiving groove after extrusion and open out of the receiving groove after pressure relief.

2. A green filling guard according to claim 1, characterized in that: A connecting groove is provided at the bottom of the mounting hole, and the connecting block passes through the connecting groove and is fixedly connected to the bottom surface of the mounting rod, and the outer walls of the long sides of the connecting block are respectively in contact with the long sides of the connecting groove.

3. A green filling guard according to claim 1, characterized in that: The bottom surface of the mounting plate is provided with a mounting groove arranged in the same direction as the transmission screw, and the transmission member includes a linkage screw rotatably connected in the mounting groove and a rack arranged at one end of the mounting plate, the moving block is located in the mounting groove and threadedly sleeved on the outer periphery of the linkage screw, one end of the linkage screw extends to the outside of the mounting plate and is fixed with a gear meshing with the rack, and the rack is slidably connected to the mounting plate through a connecting member.

4. A green filling and protection according to claim 3, characterized in that: The mounting plate is provided with a slide groove arranged in the same direction as the rack at one end thereof, and the connecting member includes a slide rod fixed in the slide groove, a slider movably sleeved on the outer periphery of the slide rod, and a return spring, one end of the slider is fixedly connected to the rack, one end of the return spring is fixedly connected to the slider, and the other end of the return spring is fixedly connected to the inner wall of one end of the slide groove.

5. A green filling and guard according to claim 4, characterized in that: The transmission member also includes an abutment plate fixed to the bottom surface of the top plate and used to press the rack to move when the mounting plate moves. The abutment plate is a right-angled trapezoidal structure, and the inclined surface and upper bottom of the abutment plate are located on the side close to the rack, and the rack abuts against the inclined surface of the abutment plate.

6. A green filling and protection according to claim 1, characterized in that: The adjusting mechanism includes a fixed shaft rotatably connected to the top of the mounting hole and an operating rod arranged on the bottom surface of the base plate, one end of the transmission screw is transmission-connected to the fixed shaft, the bottom of the fixed shaft passes through a connecting groove and is rotationally connected to one side of the top surface of the operating rod, and a fixing hole coaxially arranged with the fixed shaft is opened on the top surface of the operating rod, and a limit assembly for limiting the relative rotation direction between the operating rod and the fixed shaft is installed in the fixing hole.

7. A green filling and protection according to claim 6, characterized in that: The inner circle of the fixing hole is provided with a plurality of buffer holes, the outer circumference of the fixed shaft is provided with a plurality of limiting holes, and the plurality of limiting holes correspond to the plurality of buffer holes one by one, the limiting member comprises a buffer spring and a limiting block arranged in the buffer hole, one end of the buffer spring is fixedly connected to the inner wall of the buffer hole, the other end of the spring is fixedly connected to the limiting block, the other end of the limiting block is a right-angled triangle structure and is engaged in the limiting hole, a positioning bolt is screwed on the bottom surface of the operating rod, and a positioning hole matching the positioning bolt is provided on the bottom surface of the top plate.

8. A green filling and protection according to claim 6, characterized in that: The bottom surface of the operating rod is rotatably connected to a handle on one side away from the fixed axis, the bottom surface of the operating rod is rotatably connected to an adjustment shaft coaxially arranged with the fixed axis, the top of the adjustment shaft is fixedly connected to the bottom of the fixed axis, and a handle is fixed on the periphery of the adjustment shaft.

9. The green filling protective cover according to claim 1, characterized in that: Connecting holes are provided on both sides of the storage groove, and the reset member includes a connecting shaft rotatably connected in the connecting hole and a torsion spring installed on the outer periphery of the connecting shaft, the connecting shaft and the connecting hole are coaxially arranged, one end of the connecting shaft extends into the storage groove and is fixedly connected to the side bottom of the receiving plate, and a pull rope for limiting the opening angle of the receiving plate is connected between the inner side wall of the receiving plate and the storage groove.

10. A green filling and protective cover according to claim 1, characterized in that: There are four supporting feet, and the four supporting feet are respectively installed on the bottom surface of the top plate near four corners. The supporting feet include a supporting screw fixed to the bottom surface of the top plate and a movable sleeve threadedly sleeved on the outer periphery of the bottom of the supporting screw. The bottom of the movable sleeve is a conical structure, and a plurality of handles are fixed on the outer periphery of the movable sleeve.

Images