A high slope blasting excavation construction rolling stone protection interception device

Abstract

The utility model discloses a high slope blasting excavation construction is with rolling stone protection intercepting device, including side plate and protection net, the bottom of side plate is provided with connecting piece, and the bottom of connecting piece is provided with antiskid board, the top of side plate and the position of bottom near one end are rotatively connected with swing arm, and the inboard rotatively connected of swing arm has movable shaft, and the other end fixed mounting of movable shaft has winding shaft, and the surface of movable shaft is located between swing arm and winding shaft and has torsional spring spare with movable sleeve joint, the utility model discloses through the setting of torsional spring spare and winding shaft, when rolling stone impact protection net, and protection net draws winding shaft rotation, and torsional spring spare happens torsional deformation, and absorbs impact energy, and reduces the direct stress concentration to protection net, prevents the net silk fracture or anchoring system failure to improve the durability and energy dissipation capacity of protection net, effectively alleviated the problem that traditional flexible protection net is easily damaged under the high -speed, big quality rolling stone impact.

Description

Technical Field

[0001] This utility model relates to the technical field of slope construction protection devices, and in particular to a rolling stone protection and interception device for high slope blasting excavation. Background Technology

[0002] During the blasting and excavation of high slopes, the enormous energy generated by the explosion of explosives will violently disturb the rock mass, causing some rocks to break, loosen, and detach from the parent rock, thus forming high-speed rolling rocks. These rolling rocks are characterized by randomness, suddenness, and strong impact, seriously threatening the safety of construction personnel, machinery and equipment below, and adjacent structures, becoming one of the main sources of danger in high slope blasting and excavation operations. Therefore, protective nets are often used to intercept some of the rolling rocks.

[0003] While common flexible protective nets offer some flexibility and cushioning, their connection points remain rigid. Although they can intercept rolling stones to a certain extent, they still have the following significant problems: When subjected to high-speed, high-mass rolling stone impacts, traditional flexible protective nets are prone to wire breakage or anchoring system failure due to localized stress concentration, resulting in limited energy dissipation capacity. Rigid connection structures, lacking a buffer and energy absorption mechanism, are prone to structural damage or overall overturning under strong impacts.

[0004] Therefore, how to provide a rockfall protection and interception device for high slope blasting excavation is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] One objective of this invention is to provide a rockfall protection and interception device for blasting excavation of high slopes. This invention solves the problem in the prior art where the connection of the protective net is still a rigid connection structure, which easily leads to the breakage or anchoring failure of the protective net when impacted by large-mass rocks.

[0006] A rockfall protection and interception device for blasting excavation of a high slope according to an embodiment of the present invention includes a side plate and a protective net. A connector is provided at the bottom of the side plate. A swing arm is rotatably connected to the top and bottom of the side plate near one end. A movable shaft is rotatably connected to the inner side of the swing arm. A winding shaft is fixedly installed at the other end of the movable shaft. The two ends of the protective net are movably wound around the surface of the winding shaft. A torsion spring is movably sleeved on the surface of the movable shaft at a position between the swing arm and the winding shaft. One end of the torsion spring is fixedly connected to the end face of the winding shaft, and the other end of the torsion spring is fixedly connected to the inner side of the swing arm.

[0007] The side panels are in two sets, and guides are provided on the opposite sides of the two sets of side panels in front of the protective net.

[0008] The guide includes an upwardly inclined telescopic guide plate and a storage guide plate. The two ends of the telescopic guide plate and the storage guide plate are respectively fixedly installed on the opposite sides of the two sets of side plates, and the other end of the telescopic guide plate is movably inserted into the interior of the storage guide plate.

[0009] The top and bottom of the swing arm are rotatably connected to the positions of the side plates. The top and bottom of the side plates are fixedly installed with fixed plates. The side of the fixed plates is fixedly installed with guide rods. The surface of the guide rods is movably sleeved with sliding blocks and springs. The end of the diagonal brace away from the swing arm is rotatably connected to the surface of the sliding block. The two ends of the springs are movably connected to the surface of the sliding block and the surface of the fixed plate, respectively.

[0010] Each set of diagonal bracing rods has two sets of guide rods, sliding blocks, and springs. The two sets of guide rods, sliding blocks, and springs are arranged symmetrically about the diagonal bracing rod. The two sets of sliding blocks are fixedly installed at the top and bottom of the diagonal bracing rod, away from the swing arm.

[0011] The connector includes two sets of "X"-shaped movable frames, a first positioning block, a second positioning block, and an adjusting screw. The opposite surfaces of the two sets of "X"-shaped movable frames are rotatably connected. The first positioning block and the second positioning block are respectively rotatably connected at two joints at the connection position of the two sets of "X"-shaped movable frames. The first positioning block is located on the side of the second positioning block away from the protective net. The adjusting screw is rotatably connected to the first connecting block, and the second positioning block is threaded onto the surface of the adjusting screw.

[0012] The two sets of "X"-shaped movable frames are rotatably connected to a rotating shaft at their opposite ends. The rotating shaft is fixedly installed on the lower surface of the side plate, and the other ends of the two sets of "X"-shaped movable frames are slidably connected to the bottom of the side plate.

[0013] A sliding groove is provided on the surface of the side plate near the bottom. A sliding sleeve is slidably fitted on the sliding groove. The lower surface of the sliding sleeve is rotatably connected to the other ends of the two sets of "X" shaped movable frames that are far apart from each other.

[0014] A slip plate is fixedly installed on the lower surface of the side plate, and the lower surface of the slip plate is provided with wedge-shaped tooth grooves.

[0015] The beneficial effects of this utility model are:

[0016] By incorporating torsion springs and a winding shaft, when a boulder impacts the protective netting, the netting pulls the winding shaft to rotate, causing the torsion springs to undergo torsional deformation. This absorbs the impact energy, reduces direct stress concentration on the netting, and prevents wire breakage or anchoring system failure. Consequently, the durability and energy dissipation capacity of the protective netting are improved, effectively alleviating the problem of traditional flexible protective netting being easily damaged under the impact of high-speed, high-mass boulders.

[0017] By combining the diagonal brace with the guide rod, sliding block and spring, when the swing arm is impacted, the diagonal brace pushes the sliding block to compress the spring, achieving multi-stage buffering and energy absorption, avoiding local overload, enhancing the impact resistance and reliability of the overall structure, and ensuring the long-term stable operation of the device in complex environments.

[0018] The design of the "X"-shaped movable frame, adjusting screw, and anti-slip plate in the connector allows for flexible adjustment of the distance between the two sets of side plates, thereby adjusting the protective width of the protective net and making the device adaptable to the width of different slopes. The guide and connector increase the stability of the two sets of side plates, allowing them to be placed stably on the ground near the slope. The wedge-shaped tooth grooves at the bottom of the anti-slip plate increase the friction with the ground, enhancing the stability and anti-overturning ability of the device.

[0019] The telescopic guide plate and the retractable guide plate in the guide can adjust the length according to the change of slope width, guide the rolling stones to roll along the predetermined path, prevent the rolling stones from passing through the gaps under the protective net, reduce the impact on the rear components, and allow the rolling stones to directly impact the protective net after being guided, thereby improving the protection capability of the rolling stones. At the same time, the swing arm and the diagonal brace provide elastic support through spring components and sliding blocks, forming a multi-level buffer system to disperse the impact energy and improve the adaptability and interception efficiency of the device. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a rock-rolling protection and interception device for high slope blasting excavation proposed in this utility model.

[0022] Figure 2 This is a three-dimensional cross-sectional view of the side plate position in a rolling stone protection and interception device for high slope blasting excavation proposed in this utility model.

[0023] Figure 3 This is a three-dimensional cross-sectional structural diagram of the connecting part in a rolling stone protection and interception device for high slope blasting excavation proposed in this utility model.

[0024] Figure 4 This utility model proposes a rockfall protection and interception device for high slope blasting excavation. Figure 3 A magnified structural diagram of point A in the middle.

[0025] Figure 5 This is a three-dimensional structural diagram of a portion of the winding shaft position in a rock-rolling protection and interception device for blasting excavation of a high slope, as proposed in this utility model.

[0026] Figure 6 This is a three-dimensional structural diagram of the connecting component in a rockfall protection and interception device for high slope blasting excavation proposed in this utility model.

[0027] The attached diagram shows: 1. Side plate; 2. Protective net; 3. Connector; 4. Anti-slip plate holder; 5. Swing arm; 6. Movable shaft; 7. Rewind shaft; 8. Torsion spring; 9. Guide; 10. Telescopic guide plate; 11. Storage guide plate; 12. Diagonal brace; 13. Fixing plate; 14. Guide rod; 15. Sliding block; 16. Spring; 17. "X" shaped movable frame; 18. First positioning block; 19. Second positioning block; 20. Adjusting screw; 21. Rotating shaft; 22. Sliding groove; 23. Sliding sleeve; 24. Wedge-shaped tooth groove. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0029] refer to Figure 1-6 In this embodiment, a side plate 1 and a protective net 2 are included. A connector 3 is provided at the bottom of the side plate 1. The connector 3 includes two sets of "X"-shaped movable frames 17, a first positioning block 18, a second positioning block 19, and an adjusting screw 20. The opposite surfaces of the two sets of "X"-shaped movable frames 17 are rotatably connected. The first positioning block 18 and the second positioning block 19 are respectively rotatably connected to two joints at the connection position of the two sets of "X"-shaped movable frames 17. The first positioning block 18 is located on the side of the second positioning block 19 away from the protective net 2. The adjusting screw 20 is rotatably connected to the first connecting block. The second positioning block 19 is threaded onto the surface of the adjusting screw 20. The ends of the two sets of "X"-shaped movable frames 17 that are far apart from each other are rotatably connected to a rotating shaft 21. The rotating shaft 21 is fixedly installed on the lower surface of the side plate 1. The other ends of the two sets of "X"-shaped movable frames 17 that are far apart from each other are slidably connected to the bottom of the side plate 1.

[0030] In practice, rotating the adjusting screw 20 causes the second positioning block 19 to move closer to or further away from the first positioning block 18. By controlling the distance between the first positioning block 18 and the second positioning block 19, the expansion or contraction of the two sets of "X"-shaped movable frames 17 can be effectively controlled. Here, the surface of the adjusting screw 20 is provided with a conical ring, and then two sets of symmetrical conical bearings are sleeved on the surface of the conical ring. The surfaces of the two sets of conical bearings are fixed on the inner wall of the first positioning block 18. This is used to improve the rotational stability of the adjusting screw 20, improve the axial bearing capacity of the adjusting screw 20, and prevent the first positioning block 18 from sliding with the adjusting screw 20 during adjustment, thus affecting the adjustment effect.

[0031] refer to Figure 1-6 In this embodiment, a sliding groove 22 is provided on the surface of the side plate 1 near the bottom end, and a sliding sleeve 23 is slidably sleeved on the sliding groove 22. The lower surface of the sliding sleeve 23 is rotatably connected to the other end of the two sets of "X" shaped movable frames 17 that are far apart from each other.

[0032] In practice, during operation, since one end of the two sets of "X"-shaped movable frames 17 is positioned and rotated by the rotating shaft 21, while the other set slides through the sliding sleeve 23, when unfolding, the sliding sleeve 23 will move closer to the end of the rotating shaft 21 along the sliding groove 22. When retracting, the sliding sleeve 23 will move away from the rotating shaft 21 along the sliding groove 22. During unfolding and retracting, the two sets of side plates 1 will move away or closer simultaneously, achieving the purpose of controlling the distance between the two sets of side plates 1, which is suitable for slopes of different ranges.

[0033] refer to Figure 1-6 In this embodiment, a slip plate 4 is fixedly installed on the lower surface of the side plate 1, and a wedge-shaped tooth groove 24 is provided on the lower surface of the slip plate 4.

[0034] In practice, the anti-slip plate improves the anti-slip performance of the side plate 1, and the wedge-shaped tooth groove 24 further improves the stability of the anti-slip plate 4 and increases resistance to prevent the anti-slip plate from sliding.

[0035] refer to Figure 1-6 In this embodiment, a swing arm 5 is rotatably connected to the top and bottom of the side plate 1 near one end. A movable shaft 6 is rotatably connected to the inner side of the swing arm 5. A take-up shaft 7 is fixedly installed at the other end of the movable shaft 6. The two ends of the protective net 2 are movably wound around the surface of the take-up shaft 7. A torsion spring 8 is movably sleeved on the surface of the movable shaft 6 at the position between the swing arm 5 and the take-up shaft 7. One end of the torsion spring 8 is fixedly connected to the end face of the take-up shaft 7, and the other end of the torsion spring 8 is fixedly connected to the inner side of the swing arm 5.

[0036] In specific implementation, the swing arm 5 is used for rotational swing, and the movable shaft 6 is used to drive the winding shaft 7 to rotate. A damping ring is also fixedly installed at the connection between the movable shaft 6 and the swing arm 5 to improve the damping effect of the movable shaft 6 and prevent reciprocating rotation. Secondly, the winding shaft 7 achieves rotation through the torsion spring 8. When there is no impact, the torque of the torsion spring 8 winds the excess protective net 2 onto the surface of the winding shaft 7. When the protective net 2 is impacted, the protective net 2 wrapped around the surface of the winding shaft 7 is released, preventing the protective net 2 from breaking or detaching due to sudden or large impacts. During release, the rotation of the winding shaft 7 will drive the torsion spring 8 to bear force. When the impact decreases, the torque of the torsion spring 8 will drive the winding shaft 7 to rotate and automatically collect the protective net 2, so that the protective net 2 has a certain tension. Here, a protective tube is also fixedly sleeved on the surface of the movable shaft 6 to protect the torsion spring 8. Figure 5 As shown.

[0037] refer to Figure 1-6 In this embodiment, there are two sets of side plates 1. The opposite surfaces of the two sets of side plates 1 are provided with guides 9 in front of the protective net 2. The guides 9 include an upwardly inclined telescopic guide plate 10 and a storage guide plate 11. The two ends of the telescopic guide plate 10 and the storage guide plate 11 are respectively fixedly installed on the opposite surfaces of the two sets of side plates 1. The other end of the telescopic guide plate 10 is movably inserted into the inside of the storage guide plate 11.

[0038] In practice, the guide 9 is used to block the gap between the side plates 1 near the bottom, so as to prevent some small stones from entering the rear through the gap and causing structural damage or failure to block some small stones. Here, the small stones are guided to reach the protective net 2. The guide 9 is telescopic and can retract or extend when the two sets of side plates 1 are close to or far apart.

[0039] refer to Figure 1-6 In this embodiment, the top and bottom of the swing arm 5 are rotatably connected to the side plate 1 at their corresponding positions. The top and bottom of the side plate 1 are respectively fixedly installed with a fixing plate 13. The side of the fixing plate 13 is fixedly installed with a guide rod 14. The surface of the guide rod 14 is movably sleeved with a sliding block 15 and a spring member 16. The end of the diagonal brace 12 away from the swing arm 5 is rotatably connected to the surface of the sliding block 15. The two ends of the spring member 16 are movably connected to the surface of the sliding block 15 and the surface of the fixing plate 13, respectively.

[0040] In practice, the swing arm 5 is used to swing and rotate with the protective net 2. During the swing, the mobility of the connection position of the protective net 2 is increased, so as to avoid the failure of the rigid connection structure under impact. The diagonal brace 12 is driven to move under the swing of the swing arm 5. Under impact, the swing arm 5 rotates and pushes the diagonal brace 12 to squeeze the sliding block 15, and then squeezes the spring 16 through the sliding block 15, and the spring 16 provides buffering.

[0041] refer to Figure 1-6 In this embodiment, each set of the diagonal bracing rod 12 has two sets of guide rods 14, sliding blocks 15 and springs 16. The two sets of guide rods 14, sliding blocks 15 and springs 16 are arranged symmetrically about the diagonal bracing rod 12. The two sets of sliding blocks 15 are fixedly installed at the top and bottom of the diagonal bracing rod 12 away from the swing arm 5.

[0042] In practice, the arrangement of the double-group guide rod 14, sliding block 15 and spring 16 can make the diagonal brace 12 bear force evenly. Only when the diagonal brace 12 bears force evenly can it have better impact resistance and buffering effect. The inner wall of the sliding block 15 and the contact point with the guide rod 14 are equipped with a damping ring to avoid the reciprocating jump of the spring and achieve better buffering and shock absorption effect.

[0043] The working principle of this utility model is as follows:

[0044] When the rolling stone impacts the protective net 2, the protective net 2 is pulled and drives the winding shaft 7 to rotate, causing the torsion spring 8 to undergo torsional deformation to absorb the initial impact energy. At the same time, the swing arm 5 rotates around the side plate 1 and pushes the sliding block 15 to move along the guide rod 14 through the diagonal brace 12. The compressed spring 16 further buffers and disperses the impact force. The guide 9 can not only prevent the rolling stone from entering the back of the protective net 2 from the gap below the protective net 2, but the telescopic guide plate 10 and the storage guide plate 11 in it also guide the direction of the rolling stone so that it directly impacts the surface of the protective net 2. The two ends of the protective net 2 are rolled up to control the width of the protective net 2 as needed. The rolling method also avoids the rigid connection between the two ends of the protective net 2, which would affect the buffering effect.

[0045] The "X"-shaped movable frame 17 in connector 3 adjusts its width via adjusting screw 20, so that the distance between the two sets of side plates 1 is adjusted according to the actual slope width. The two side plates 1 are adjusted via... Figure 1 As shown, it is firmly placed on the slope. Its anti-slip plate increases the ground friction through the wedge-shaped tooth groove 24 to prevent slippage. The whole device effectively intercepts rolling stones and dissipates energy through multi-level buffering and adaptive adjustment, avoiding structural damage or overturning. It also adjusts the distance between the two sets of side plates 1 to adapt to slopes of different widths, improving the adaptability of the protection.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A rockfall protection and interception device for blasting excavation of high slopes, characterized in that, It includes a side plate (1) and a protective net (2), and the bottom of the side plate (1) is provided with a connector (3); A swing arm (5) is rotatably connected to the top and bottom of the side plate (1) near one end. A movable shaft (6) is rotatably connected to the inner side of the swing arm (5). A take-up shaft (7) is fixedly installed at the other end of the movable shaft (6). The two ends of the protective net (2) are movably wound around the surface of the take-up shaft (7). A torsion spring (8) is movably sleeved on the surface of the movable shaft (6) at the position between the swing arm (5) and the take-up shaft (7). One end of the torsion spring (8) is fixedly connected to the end face of the take-up shaft (7), and the other end of the torsion spring (8) is fixedly connected to the inner side of the swing arm (5).

2. The rolling stone protection and interception device for high slope blasting excavation as described in claim 1, characterized in that, The number of side panels (1) is two sets, and the opposite sides of the two sets of side panels (1) are provided with guides (9) in front of the protective net (2).

3. A rockfall protection and interception device for high slope blasting excavation as described in claim 2, characterized in that, The guide (9) includes an upwardly inclined telescopic guide plate (10) and a storage guide plate (11). The two ends of the telescopic guide plate (10) and the storage guide plate (11) are respectively fixedly installed on the opposite sides of the two sets of side plates (1). The other end of the telescopic guide plate (10) is movably inserted into the interior of the storage guide plate (11).

4. A rockfall protection and interception device for high slope blasting excavation as described in claim 3, characterized in that, The top and bottom of the swing arm (5) are rotatably connected to the side plate (1) at the corresponding positions. The top and bottom of the side plate (1) are respectively fixedly installed with a fixing plate (13). The side of the fixing plate (13) is fixedly installed with a guide rod (14). The surface of the guide rod (14) is movably sleeved with a sliding block (15) and a spring (16). The end of the diagonal brace (12) away from the swing arm (5) is rotatably connected to the surface of the sliding block (15). The two ends of the spring (16) are movably connected to the surface of the sliding block (15) and the surface of the fixing plate (13) respectively.

5. A rockfall protection and interception device for blasting excavation of high slopes according to claim 4, characterized in that, Each set of the diagonal bracing rod (12) has two sets of guide rods (14), sliding blocks (15) and springs (16). The two sets of guide rods (14), sliding blocks (15) and springs (16) are arranged symmetrically about the diagonal bracing rod (12). The two sets of sliding blocks (15) are fixedly installed at the top and bottom of the diagonal bracing rod (12) away from the swing arm (5).

6. A rockfall protection and interception device for high slope blasting excavation as described in claim 5, characterized in that, The connector (3) includes two sets of "X" shaped movable frames (17), a first positioning block (18), a second positioning block (19), and an adjusting screw (20). The opposite surfaces of the two sets of "X" shaped movable frames (17) are rotatably connected. The first positioning block (18) and the second positioning block (19) are respectively rotatably connected at the two joints of the connection position of the two sets of "X" shaped movable frames (17). The first positioning block (18) is located on the side of the second positioning block (19) away from the protective net (2). The adjusting screw (20) is rotatably connected to the first connecting block. The second positioning block (19) is threaded onto the surface of the adjusting screw (20).

7. A rockfall protection and interception device for high slope blasting excavation as described in claim 6, characterized in that, The two sets of "X" shaped movable frames (17) are rotatably connected to a rotating shaft (21) at one end that is far apart from each other. The rotating shaft (21) is fixedly installed on the lower surface of the side plate (1). The other ends of the two sets of "X" shaped movable frames (17) are slidably connected to the bottom of the side plate (1).

8. A rockfall protection and interception device for high slope blasting excavation as described in claim 7, characterized in that, A sliding groove (22) is provided on the surface of the side plate (1) near the bottom. A sliding sleeve (23) is slidably sleeved on the sliding groove (22). The lower surface of the sliding sleeve (23) is rotatably connected to the other end of the two sets of "X" shaped movable frames (17) that are far apart from each other.

9. A rockfall protection and interception device for high slope blasting excavation as described in claim 8, characterized in that, The lower surface of the side plate (1) is fixedly installed with a plate for placing anti-slip plates (4), and the lower surface of the plate for placing anti-slip plates (4) is provided with wedge-shaped tooth grooves (24).

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