A slope protection net with adaptive change of buffer strength and a method of using the same

Abstract

The application relates to the technical field of slope protection, in particular to a slope protection net with self-adaptive change of buffer strength and a use method thereof, which comprises symmetrically arranged protection plates, symmetrically arranged fixing nails are fixed at the bottom of the protection plates, the fixing nails are used for fixing the protection plates on a slope, a protection net body is arranged on the protection plates, a buckling mechanism connected with the protection net body is further arranged on the protection plates, an unlocking mechanism connected with the buckling mechanism is arranged on the protection plates, the unlocking mechanism can control the separation of the protection net body and the protection plates through the buckling mechanism, a buffer mechanism connected with the buckling mechanism is arranged on the protection plates, a limiting assembly connected with the buffer mechanism and the buckling mechanism is further arranged on the protection plates, the buckling mechanism can act when the protection net body is impacted, and drives the buffer mechanism and the limiting assembly to move.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of slope protection, and particularly relates to a slope protection net with adaptive change of buffer strength and a use method thereof. BACKGROUND

[0002] Some places near mountains are easily damaged by landslides, especially in rainy and snowy weather. If only relying on vegetation to fix soil, there is no great effect, so more slope protection projects are needed for slope protection.

[0003] Slope protection has two types, one is engineering slope protection, and the other is ecological slope protection. There are many types of engineering slope protection, and more important are the installation of retaining walls, the concrete reinforcement of slopes, the installation of slope protection nets and the anchoring of slopes. These types of slope protection methods are most commonly used.

[0004] As for the protection net, various flexible nets are generally covered and wrapped on the required protection slope or rock to limit the weathering and peeling or damage of the slope rock soil and the collapse of dangerous rocks, or to control the movement of falling rocks within a certain range. However, the existing protection net may be torn when impacted by falling rocks. Since the protection net is fixedly arranged, it is difficult to replace the protection net. If a certain buffer force is provided for the protection net, the falling rocks may be separated from the protection net. SUMMARY

[0005] The present application aims to provide a slope protection net with adaptive change of buffer strength and a use method thereof to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme.

[0007] A slope protection net with adaptive change of buffer strength comprises:

[0008] Symmetrically arranged protection plates are fixedly arranged with symmetrically arranged fixing nails at the bottom, and the fixing nails are used to fix the protection plates on the slope.

[0009] A protection net body is arranged on the protection plate, and a buckling mechanism connected with the protection net body is further arranged on the protection plate. The protection plate can control the unfolding of the protection net body through the buckling mechanism.

[0010] An unlocking mechanism is arranged on the protection plate and connected with the buckling mechanism. The unlocking mechanism can control the separation of the protection net body from the protection plate through the buckling mechanism.

[0011] The buffering mechanism is arranged on the guard plate and connected with the buckling mechanism, and the guard plate is further provided with a limiting assembly connected with the buffering mechanism and the buckling mechanism, the buckling mechanism can act when the guard net body is impacted, and drive the buffering mechanism and the limiting assembly to move.

[0012] As a further scheme of the present application, the buckling mechanism comprises support sleeves fixedly arranged on the guard plate and symmetrically arranged, an active rod is movably arranged in the support sleeve, a clamping box is fixed on the active rod, a support assembly connected with the clamping box is arranged on the guard plate, the support assembly is connected with the guard net body and the unlocking mechanism, and the active rod and the support sleeve are connected with the buffering mechanism and the limiting assembly.

[0013] As a further scheme of the present application, the support assembly comprises a connecting plate arranged on the guard plate and abutting against the clamping box, a support roller is rotatably arranged on the side of the connecting plate away from the clamping box, a locking structure connected with the connecting plate is arranged on the guard plate, the locking structure is connected with the unlocking mechanism, and the support roller is connected with the guard net body.

[0014] As a further scheme of the present application, the locking structure comprises a tapered ring fixedly arranged in the clamping box, the connecting plate is hingedly connected with symmetrically arranged hinged rods, the hinged rods are fixed with triangular blocks matched with the tapered ring at the ends away from the connecting plate, the ends of the two hinged rods towards the connecting plate are connected with second springs, and the triangular blocks are connected with the unlocking mechanism.

[0015] As a further scheme of the present application, the unlocking mechanism comprises a rotating handle rotatably arranged on the clamping box, a lead screw coaxially connected with the rotating handle is rotatably arranged on the clamping box, a threaded sleeve movably arranged on the lead screw is threadedly matched with the lead screw, and a driven assembly connected with the threaded sleeve and the triangular blocks is arranged on the clamping box.

[0016] As a further scheme of the present application, the driven assembly comprises a clamping groove formed in the side wall of the clamping box, an active ring fixedly connected with the threaded sleeve is movably arranged in the clamping box, a tapered groove matched with the triangular blocks is formed in the side of the active ring towards the connecting plate, and the active ring is clamped with the clamping groove.

[0017] As a further scheme of the present application: the buffering mechanism comprises a movable plate movably mounted on the movable rod, the movable plate is fixed with hollow rods arranged symmetrically on one side of the supporting sleeve, a spring is arranged on the movable rod and abuts against the movable plate, an adjusting assembly is arranged on the protective plate and connected with the hollow rods and the supporting sleeve, and the adjusting assembly is connected with the limiting assembly.

[0018] As a further scheme of the present application: the adjusting assembly comprises rotating rods rotatably mounted on the side wall of the supporting sleeve and arranged symmetrically, an inclined rod is fixed on one end of the rotating rod and faces the movable plate, a limiting block is fixed in the hollow rod and abuts against the inclined rod, and the rotating rod is connected with the limiting assembly.

[0019] As a further scheme of the present application: the limiting assembly comprises a guide groove formed on the side wall of the rotating rod, symmetrically arranged slide grooves are formed on the side wall of the supporting sleeve, and a limiting rod is fixed on the movable rod, penetrates through the slide grooves and is clamped in the guide groove.

[0020] A use method of the side slope protection net with self-adapting change of buffering strength, comprising the following steps:

[0021] Step one: connecting the protection net body to the protective plate through the buckling mechanism, and driving the two protective plates to move towards the direction away from each other, so as to unfold the protection net body;

[0022] Step two: when the protection net body is completely unfolded, fixing the protective plate to the ground through the fixing nails;

[0023] Step three: when the protection net body is impacted, the protection net body will be pulled and drive the buckling mechanism to move, so that the buffering mechanism moves, and the buckling mechanism also drives the buffering mechanism to move through the limiting assembly, so that the buffering force provided by the buffering mechanism increases;

[0024] Step four: when the protection net body is no longer impacted, the protection net body is reset under the action of the buffering mechanism.

[0025] Compared with the prior art, the present application has the beneficial effects that: the protection net body can be supported, and when the protection net body is impacted, the buffering mechanism provides a certain buffering force to the protection net body, and at the same time, the limiting assembly can increase the pulling force to the protection net body while providing the buffering force, so as to prevent the soil or gravel in the protection net body from separating from the protection net body, when the protection net body needs to be replaced, the unlocking mechanism can be driven to move the buckling mechanism, so that the protection net body wound on the buckling mechanism is separated from the protective plate, thereby realizing the replacement of the protection net body. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 Structure diagram of an embodiment of the slope protection net with adaptive change of buffering intensity.

[0027] Figure 2 Structure diagram of another angle of an embodiment of the slope protection net with adaptive change of buffering intensity.

[0028] Figure 3 For Figure 2 Structure enlarged diagram at A in the middle.

[0029] Figure 4 Connection relationship diagram of part of the buckling mechanism, part of the unlocking mechanism and the buffering mechanism in an embodiment of the slope protection net with adaptive change of buffering intensity.

[0030] Figure 5 Connection relationship diagram of the buffering mechanism, the limiting assembly and part of the buckling mechanism in an embodiment of the slope protection net with adaptive change of buffering intensity.

[0031] Figure 6 Part of the half-section structure diagram in an embodiment of the slope protection net with adaptive change of buffering intensity.

[0032] Figure 7 Exploded structure diagram of part of the buckling mechanism and the unlocking mechanism in an embodiment of the slope protection net with adaptive change of buffering intensity.

[0033] Figure 8 Exploded structure diagram of the buffering mechanism and the limiting assembly in an embodiment of the slope protection net with adaptive change of buffering intensity.

[0034] In the figure: 1, protection plate; 2, fixing nail; 3, support sleeve; 4, sliding groove; 5, movable rod; 6, rotating rod; 7, guide groove; 8, limiting rod; 9, inclined rod; 10, movable plate; 11, hollow rod; 12, limiting block; 13, No. 1 spring; 14, clamping box; 15, clamping groove; 16, conical ring; 17, connecting plate; 18, No. 2 spring; 19, hinged rod; 20, triangular block; 21, rotating handle; 22, screw rod; 23, threaded sleeve; 24, movable ring; 25, conical groove; 26, support roller; 27, protection net body. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0036] In addition, elements in the application can be referred to as "fixed" or "set" on another element, which can be directly on another element or can exist with a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or can exist with a middle element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only implementation.

[0037] Referring to Figures 1-8 In an embodiment of the application, a slope protection net with adaptive change in buffer strength comprises:

[0038] The protection plates 1 are symmetrically arranged, and the bottom of each protection plate 1 is fixedly provided with a fixing nail 2 arranged symmetrically, and the fixing nail 2 is used to fix the protection plate 1 on the slope.

[0039] Among them, the protection plate 1 is provided with two, when it is necessary to protect the slope, at this time, the fixing nail 2 is inserted into the ground.

[0040] Referring to Figure 1 , Figure 2 , Figures 6-8 The protection net body 27 is arranged on the protection plate 1, and the protection plate 1 is further provided with a buckling mechanism connected with the protection net body 27, and the protection plate 1 can control the unfolding of the protection net body 27 through the buckling mechanism, the buckling mechanism comprises a support sleeve 3 fixedly arranged on the protection plate 1 and arranged symmetrically, the support sleeve 3 is movably provided with a movable rod 5, the movable rod 5 is fixedly provided with a card box 14, the protection plate 1 is provided with a supporting assembly connected with the card box 14, the supporting assembly is connected with the protection net body 27 and the unlocking mechanism, the movable rod 5 and the support sleeve 3 are connected with the buffer mechanism and the limiting assembly, wherein the supporting assembly comprises a connecting plate 17 arranged on the protection plate 1 and abutting against the card box 14, a supporting roller 26 is rotatably arranged on the side of the connecting plate 17 away from the card box 14, the protection plate 1 is provided with a locking structure connected with the connecting plate 17, the locking structure is connected with the unlocking mechanism, the supporting roller 26 is connected with the protection net body 27, the above-mentioned locking structure comprises a tapered ring 16 fixedly arranged in the card box 14, the connecting plate 17 is hingedly provided with a hinge rod 19 arranged symmetrically, one end of the hinge rod 19 away from the connecting plate 17 is fixedly provided with a triangular block 20 matched with the tapered ring 16, two hinge rods 19 are connected with a second spring 18 at the end portion thereof toward the connecting plate 17, and the triangular block 20 is connected with the unlocking mechanism.

[0041] In detail, in the initial state, the distance between the two protective plates 1 is the shortest, the protective net body 27 is wound on the supporting roller 26, and the second spring 18 is in the stretched state, under the action of the second spring 18, the two hinged rods 19 are in the unfolded state, so that the distance between the triangular blocks 20 is the largest. When it is necessary to protect the slope by the protective net body 27, the connecting plate 17 is held, and the triangular block 20 is inserted into the clamping box 14. When the inclined surface of the triangular block 20 abuts against the inclined surface of the conical ring 16, the triangular block 20 is driven to move towards each other, so that the hinged rod 19 rotates around the hinge point, so that the second spring 18 is stretched. When the inclined surface of the triangular block 20 is separated from the inclined surface of the conical ring 16, the second spring 18 is elastically released, and the vertical surface of the triangular block 20 is abutted against the vertical surface of the conical ring 16 through the hinged rod 19, so that the connecting plate 17 is fixed on the clamping box 14 through the triangular block 20. At this time, the two protective plates 1 can be driven to move away from each other, and the protective net body 27 is unfolded through the supporting roller 26 until the protective net body 27 is completely unfolded.

[0042] Preferably, since the protective net body 27 will be impacted on the protective net body 27 when the soil or stone of the slope falls during use, which may cause the protective net body 27 to be damaged. When the protective net body 27 is damaged, the protective net body 27 needs to be replaced. At this time, the unlocking mechanism can be moved and abutted against the inclined surface of the triangular block 20, so that the triangular block 20 moves towards each other, and the second spring 18 is stretched through the hinged rod 19. When the vertical surface of the triangular block 20 is separated from the vertical surface of the conical ring 16, the triangular block 20 will be separated from the conical ring 16. At this time, the connecting plate 17 can be driven, and the protective net body 27 can be replaced.

[0043] Please refer to Figures 1-6 , the unlocking mechanism is arranged on the protective plate 1 and connected with the buckling mechanism. The unlocking mechanism can control the protective net body 27 and the protective plate 1 to be separated through the buckling mechanism. The unlocking mechanism comprises a rotating handle 21 rotatably installed on the clamping box 14. A lead screw 22 coaxially connected with the rotating handle 21 is rotatably installed on the clamping box 14. A threaded sleeve 23 threadedly matched with the lead screw 22 is movably installed on the lead screw 22. A driven assembly connected with the threaded sleeve 23 and the triangular block 20 is arranged on the clamping box 14. The driven assembly comprises a clamping groove 15 opened in the side wall of the clamping box 14. An activity ring 24 fixedly connected with the threaded sleeve 23 is movably installed in the clamping box 14. A conical groove 25 matched with the triangular block 20 is opened in the side of the activity ring 24 facing the connecting plate 17. The activity ring 24 is clamped with the clamping groove 15.

[0044] It needs to be explained that when the protective net body 27 needs to be replaced, the handle 21 is rotated at this time, and drives the screw rod 22 to rotate, so as to drive the threaded sleeve 23 to move, the threaded sleeve 23 will drive the movable ring 24 to move, because the movable ring 24 is clamped with the clamping groove 15, the threaded sleeve 23 will have a guiding effect, the threaded sleeve 23 will move along the length direction of the screw rod 22, and will not rotate with the screw rod 22, the movable ring 24 will also drive the conical groove 25 to move, when the conical groove 25 abuts against the inclined surface of the triangular block 20, the triangular block 20 will be driven to move towards the direction of approaching each other, when the triangular block 20 is separated from the vertical surface of the conical ring 16, the triangular block 20 will be separated from the clamping box 14, at this time, the connecting plate 17 can be taken out, and the protective net body 27 is replaced.

[0045] Please refer to Figures 1-5 、 Figure 8 , the buffering mechanism is arranged on the protective plate 1 and connected with the buckling mechanism, the buffering mechanism comprises a movable plate 10 movably installed on the movable rod 5, a hollow rod 11 symmetrically arranged is fixed on one side of the movable plate 10 towards the supporting sleeve 3, a first spring 13 abutting against the movable plate 10 is sleeved on the movable rod 5, the adjusting assembly connected with the hollow rod 11 and the supporting sleeve 3 is arranged on the protective plate 1, the adjusting assembly is connected with the limiting assembly, wherein the adjusting assembly comprises a rotating rod 6 symmetrically arranged and rotatingly installed on the side wall of the supporting sleeve 3, an inclined rod 9 is fixed on one end of the rotating rod 6 towards the movable plate 10, a limiting block 12 abutting against the inclined rod 9 is fixed in the hollow rod 11, and the rotating rod 6 is connected with the limiting assembly.

[0046] Further, when the protective net body 27 protects the slope, the soil and gravel of the slope may fall and impact the protective net body 27, in order to prevent the protective net body 27 from being torn by the impact force, the protective net body 27 needs to be provided with a certain buffer force, in the initial state, the first spring 13 is in the compressed state, so that the movable rod 5 is located at the end of the stroke away from the protective net body 27, the limiting block 12 abuts against the most concave position of the inclined surface of the inclined rod 9, so that the spacing between the movable plate 10 and the support sleeve 3 is the smallest, when the protective net body 27 is impacted, the protective net body 27 will be pulled at this time, and the clamping box 14 is driven to move through the connecting plate 17, so that the movable rod 5 moves towards the connecting plate 17, the movable rod 5 also compresses the first spring 13, and under the action of the first spring 13, a certain buffer force is provided to the protective net body 27, the movable rod 5 also drives the limiting assembly to move, so that the rotating rod 6 rotates and drives the inclined rod 9 to rotate, the abutting position of the inclined surface of the inclined rod 9 and the limiting block 12 changes, and the hollow rod 11 fixed with the limiting block 12 is driven to move, so that the movable plate 10 moves away from the support sleeve 3, and the first spring 13 is further compressed, so that the buffer force provided to the protective net body 27 is increased while the buffer force provided to the protective net body 27 is increased.

[0047] Please refer to Figures 1-3 , Figure 5 , Figure 8 , the protective plate 1 is also provided with a limiting assembly connected with the buffer mechanism and the buckling mechanism, the buckling mechanism can act when the protective net body 27 is impacted, and drive the buffer mechanism and the limiting assembly to move, the limiting assembly includes a guide groove 7 opened on the side wall of the rotating rod 6, the support sleeve 3 is provided with a symmetrical slide groove 4 on the side wall, and the limiting rod 8 fixed on the movable rod 5 penetrates through the slide groove 4 and is clamped with the guide groove 7.

[0048] Further, while providing the buffer force to the protective net body 27, the falling soil or gravel cannot be separated from the protective net body 27, therefore, the stretching amount of the protective net body 27 cannot be too large, when the movable rod 5 moves, the limiting rod 8 moves, so that the limiting rod 8 moves along the length direction of the slide groove 4, the limiting rod 8 also slides in the guide groove 7, the guide groove 7 is spirally arranged, under the action of the limiting rod 8, the rotating rod 6 is driven to rotate, so that the inclined rod 9 rotates, and the movable plate 10 moves away from the support sleeve 3, and the first spring 13 is further compressed.

[0049] A use method of the slope protection net with adaptive change of buffer strength, comprising the following steps:

[0050] Step one: connect the protective net body 27 to the protective plate 1 through the buckling mechanism, and drive the two protective plates 1 to move away from each other, so that the protective net body 27 is unfolded;

[0051] Step two: when the protective net body 27 is completely unfolded, the protective plate 1 is fixed to the ground through the fixing nails 2;

[0052] Step three: when the protective net body 27 is impacted, the protective net body 27 will be pulled and drive the buckling mechanism to move, so that the buffer mechanism moves, and the buckling mechanism also drives the buffer mechanism to move through the limiting assembly, so that the buffer force provided by the buffer mechanism increases;

[0053] Step four: when the protective net body 27 is no longer impacted, the protective net body 27 is reset under the action of the buffer mechanism.

[0054] In use, the embodiments of all the features described in the present application are taken as examples,

[0055] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0056] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A slope protection net with adaptive buffer strength, characterized in that, include: A protective plate (1) is arranged symmetrically, and a fixing nail (2) is fixedly installed at the bottom of the protective plate (1) in a symmetrical manner. The fixing nail (2) is used to fix the protective plate (1) on the slope. The protective net body (27) is set on the protective plate (1). The protective plate (1) is also provided with a fastening mechanism connected to the protective net body (27). The protective plate (1) can control the protective net body (27) to unfold through the fastening mechanism. The fastening mechanism includes a support sleeve (3) fixedly installed on the protective plate (1) and arranged symmetrically, a movable rod (5) is movably installed inside the support sleeve (3), and a card box (14) is fixed on the movable rod (5); The support assembly includes a connecting plate (17) disposed on the protective plate (1) and abutting against the card box (14). A support roller (26) is rotatably mounted on the side of the connecting plate (17) away from the card box (14). The support roller (26) is connected to the protective net body (27). The locking structure includes a conical ring (16) fixedly installed in the card box (14), and hinge rods (19) arranged symmetrically on the connecting plate (17). A triangular block (20) cooperating with the conical ring (16) is fixed at one end of the hinge rod (19) away from the connecting plate (17). A second spring (18) is connected to the ends of the two hinge rods (19) facing the connecting plate (17). When the slope needs to be protected by the protective net body (27), the triangular block (20) is inserted into the card box (14). When the inclined surface of the triangular block (20) abuts against the inclined surface of the conical ring (16), the triangular block (20) is driven to move towards each other, so that the hinge rod (19) rotates around the hinge point, so that the second spring (18) is stretched. When the inclined surface of the triangular block (20) separates from the inclined surface of the conical ring (16), the second spring (18) is released elastically, and the vertical surface of the triangular block (20) abuts against the vertical surface of the conical ring (16) through the hinge rod (19), so that the connecting plate (17) is fixed on the card box (14) through the triangular block (20). At this time, the two protective plates (1) can be driven to move towards each other, and the protective net body (27) is fully unfolded through the support roller (26). The unlocking mechanism is set on the protective plate (1). The unlocking mechanism can control the separation of the protective net body (27) from the protective plate (1) through the fastening mechanism. The unlocking mechanism includes a rotating handle (21) rotatably mounted on the card box (14). A screw rod (22) coaxially connected to the rotating handle (21) is rotatably mounted on the card box (14). A threaded sleeve (23) threadedly engaged with the screw rod (22) is movably mounted on the screw rod (22). A driven component connected to the threaded sleeve (23) and the triangular block (20) is provided on the card box (14). When the vertical surface of the triangular block (20) separates from the vertical surface of the conical ring (16), the triangular block (20) will disengage from the conical ring (16). At this time, the connecting plate (17) can be driven and the protective net body (27) can be replaced. The buffer mechanism is installed on the protective plate (1). The fastening mechanism can operate when the protective net body (27) is impacted, and drive the buffer mechanism and the limiting component to move. The buffer mechanism includes a movable plate (10) movably installed on the movable rod (5). A hollow rod (11) is fixed on the side of the movable plate (10) facing the support sleeve (3) and is symmetrically arranged. A first spring (13) is sleeved on the movable rod (5) and abuts against the movable plate (10). The adjustment assembly includes a rotating rod (6) rotatably mounted on the side wall of the support sleeve (3) and symmetrically arranged. An inclined rod (9) is fixed at one end of the rotating rod (6) facing the movable plate (10). A limiting block (12) that abuts against the inclined rod (9) is fixed inside the hollow rod (11). The limiting component includes a guide groove (7) on the side wall of the rotating rod (6), a symmetrically arranged sliding groove (4) on the side wall of the support sleeve (3), and a limiting rod (8) fixed on the movable rod (5) that passes through the sliding groove (4) and engages with the guide groove (7).

2. The slope protection net with adaptive buffer strength according to claim 1, characterized in that, The driven component includes a slot (15) on the side wall of the card box (14), and a movable ring (24) fixedly connected to the threaded sleeve (23) is movably installed inside the card box (14). The movable ring (24) has a tapered groove (25) on the side facing the connecting plate (17) that cooperates with the triangular block (20). The movable ring (24) engages with the slot (15).

3. A method for using a slope protection net with adaptive buffer strength, comprising the slope protection net with adaptive buffer strength as described in claim 1, characterized in that, Includes the following steps: Step 1: Connect the protective net body (27) to the protective plate (1) through the fastening mechanism, and drive the two protective plates (1) to move in a direction away from each other so that the protective net body (27) unfolds; Step 2: When the protective net body (27) is fully unfolded, fix the protective plate (1) to the ground with fixing nails (2); Step 3: When the protective net body (27) is impacted, the protective net body (27) will be pulled and drive the fastening mechanism to move, causing the buffer mechanism to move. The fastening mechanism will also drive the buffer mechanism to move through the limiting component, thereby increasing the buffering force provided by the buffer mechanism. Step 4: When the protective net body (27) is no longer impacted, the protective net body (27) is reset under the action of the buffer mechanism.

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