Ship protection structure with adjustable anti-collision effect

Abstract

The invention relates to the technical field of ship related equipment, in particular to an anti-collision effect adjustable ship protection structure which comprises a mounting frame body, a mounting mechanism used for being mounted on the outer side of a ship body is arranged on the inner side of the mounting frame body, and a supporting mechanism used for mounting an anti-collision structure is slidably connected to the outer side of the mounting frame body. A sliding limiting mechanism is arranged at the lower end of the inner side of the supporting mechanism and the lower end of the inner side of the mounting frame body, a clamping fixing mechanism meshed through teeth is arranged between the supporting mechanism and the mounting frame body, and a spring energy absorption assembly is arranged on the outer side of the supporting mechanism. A steel structure energy absorption assembly and a rubber energy absorption assembly are connected to the outer side of the supporting mechanism through spring energy absorption assemblies, energy absorption can be achieved through the spring energy absorption assembly and the rubber energy absorption assembly, energy absorption can also be achieved through collapse of a steel structure mounting frame, and a force unloading rotary drum can convert external kinetic energy into kinetic energy of rotation of the force unloading rotary drum during collision; and the anti-collision effect is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of ship-related equipment, and in particular to a ship protection structure with adjustable anti-collision effect. Background Art

[0002] A port is a transportation hub located along the coast of a sea, river, lake, or reservoir, with waterway transport facilities and conditions for ships to enter, exit, and berth safely. It is a gathering point and hub for water and land transportation, a distribution center for industrial and agricultural products and foreign trade import and export materials, and a place for ships to berth, load and unload goods, get on and off passengers, and replenish supplies. When ships dock in a port, they are often very close to the dock. Due to the influence of waves and currents, the docked ships may rub or squeeze the dock, which will not only damage the dock, but also cause wear and tear on the outer wall of the ship, which has a certain adverse effect on people's use process; After searching, the Chinese patent with announcement number CN220503818U is provided with a buffer shock-absorbing structure. After the impact force is transmitted to the load-bearing plate, the impact force is secondary buffered by the extrusion deformation of two groups of buffer springs. The load-bearing plate slides on the guide rail in the positioning block through the positioning slider. The structure is simple and the protection of the port is improved. However, there are still the following problems: 1. When the hull collides with the dock, the hull will rotate. Since the load-bearing plate can slide, the rotation of the hull will cause other locations where no anti-collision structure is deployed to collide with the dock, which is not effective in protecting the hull; 2. The buffering effect is too weak if only two sets of buffer springs are used for protection. If the ship collides at a low speed other than when docked, this simple protection effect cannot play a good role in reducing speed, which will cause secondary damage to the items and equipment inside the hull under inertia; 3. This protective device can only have a good protective effect when installed on the side of the hull. For a bent position such as the bow, since the collision direction is uncertain, the load-bearing plate cannot ensure that it is facing the collision direction, resulting in the inability to play a protective role.

[0003] In view of this, we propose a ship protection structure with adjustable anti-collision effect. Summary of the invention

[0004] The object of the present invention is to provide a ship protection structure with adjustable anti-collision effect to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A ship protection structure with adjustable anti-collision effect comprises a mounting frame body, an installation mechanism for being installed on the outside of a hull is arranged on the inner side of the mounting frame body, a support mechanism for installing an anti-collision structure is slidably connected to the outer side of the mounting frame body, a sliding limiting mechanism is arranged at the lower end of the support mechanism and the inner side of the mounting frame body, a clamping fixing mechanism for meshing with teeth is arranged between the support mechanism and the mounting frame body, a spring energy absorbing assembly is arranged on the outer side of the support mechanism, and a steel structure energy absorbing assembly and a rubber energy absorbing assembly are connected to the outer side of the support mechanism through the spring energy absorbing assembly.

[0006] Preferably, the mounting frame body is an arc-shaped structure, and a plurality of hollow grooves are evenly arranged on the mounting frame body, the mounting mechanism includes a mounting rod and a mounting plate, the mounting rod is welded and fixed to the four corners of the inner side of the mounting frame body, and the mounting plate and the mounting rod are integrally formed, and two groups of symmetrically arranged mounting holes are arranged on the mounting plate.

[0007] Preferably, the support mechanism comprises a support plate, the support plate is an arc-shaped structure, and a connecting seat is integrally formed on the outer side of the upper end of the support plate.

[0008] Preferably, the sliding limiting mechanism includes a sliding connection portion integrally formed on the inner side of the mounting frame body, an upper surface of the sliding connection portion is provided with an arc-shaped sliding groove, and an arc-shaped plug plate is integrally formed inwardly at the lower end of the support plate, and the arc-shaped plug plate is inserted into the arc-shaped sliding groove.

[0009] Preferably, anti-falling blocks are integrally formed on both sides of the arc-shaped slide groove, and two groups of symmetrically arranged mounting grooves are opened at the lower end of the arc-shaped plug plate, and rollers are rotatably installed in the mounting grooves.

[0010] Preferably, the clamping and fixing mechanism includes a side plate integrally formed on the upper end of the mounting frame, one side of the side plate is integrally formed with tooth 1, and the upper end of the connecting seat is slidably connected with a support, one side of the support is integrally formed with tooth 2, and a handle is welded and fixed to the upper end of the support.

[0011] Preferably, a sliding groove is provided at the upper end of the connecting seat, and limiting grooves are provided on both sides of the sliding groove, and a limiting slide is integrally formed at the lower end of the support. The support and the connecting seat are slidably connected through the cooperation of the sliding groove and the limiting slide, and a first spring is welded and fixed to the inner wall of the sliding groove, and the other end of the first spring is welded and fixed to the limiting slide.

[0012] Preferably, the steel structure energy absorption assembly includes a hollow arc-shaped steel plate, the spring energy absorption assembly includes a connecting column and a sleeve, the spring energy absorption assembly is provided with four groups, and the connecting column is welded to the outer side of the support plate, and the end of the connecting column is inserted into the sleeve.

[0013] Preferably, the sleeve is welded to the inner side of the arc-shaped steel plate, and the sleeve is provided with a guide hole and a slot, the guide hole and the slot are connected, and the aperture of the guide hole is smaller than the inner diameter of the slot, one end of the connecting column passes through the guide hole and is inserted into the slot, and the end of the connecting column is integrally formed with a limiting plate, a second spring is welded to one side of the limiting plate, and one end of the second spring is welded and fixed to the inner wall of the slot.

[0014] Preferably, two groups of arc-shaped elastic steel structure mounting frames which are symmetrically arranged in the upper and lower parts are welded to the outer side of the arc-shaped steel plate, and a plurality of groups of through grooves are evenly arranged on the elastic steel structure mounting frames, and bearings are installed on the upper and lower walls of the through grooves, and a force unloading drum is rotatably installed in the through grooves through the bearings, and a rubber sleeve is sleeved on the outer side of the force unloading drum, and the rubber energy absorbing assembly is composed of a cylindrical rubber block, and the rubber energy absorbing assembly is fixedly installed on the outer side of the arc-shaped steel plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The ship protection structure with adjustable anti-collision effect is installed through the mounting holes in the mounting structure on the inner side of the mounting frame body in conjunction with bolts, which is easy to install. The mounting frame body is an arc-shaped structure and can be well installed on the bow. The anti-collision structure can slide on the mounting frame through the supporting mechanism to change the facing direction of the anti-collision structure, thereby ensuring that the actual effect of the anti-collision structure can be effectively exerted.

[0016] 2. The anti-collision structure of the ship protection structure with adjustable anti-collision effect is slid to the direction facing the collision by rotating the handle, and then the anti-collision structure will face the collision object directly so that the function of the anti-collision structure can be normally reflected.

[0017] 3. The anti-collision structure of the ship protection structure with adjustable anti-collision effect can be locked after sliding through the cooperation of tooth one, tooth two and the first spring. After the anti-collision structure slides to the direction facing the collision object and collides, the anti-collision structure is not easy to slide and the hull is not easy to rotate and cause a secondary collision.

[0018] 4. The ship protection structure with adjustable anti-collision effect can convert the kinetic energy during collision into the potential energy of the spring through the second spring in the spring energy absorbing assembly, and can greatly improve the anti-collision effect through the cooperation of the spring energy absorbing assembly, the steel structure energy absorbing assembly and the rubber energy absorbing assembly.

[0019] 5. The rotatable unloading drum in the ship protection structure energy absorption component with adjustable anti-collision effect will collide with the steel structure mounting frame after the rubber energy absorption component is completely collapsed. The steel structure mounting frame can not only deform to absorb energy, but also the unloading drum can absorb the kinetic energy of the collision by rotating, thereby further improving the anti-collision effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the front side three-dimensional structure of a ship protection structure with adjustable anti-collision effect after rotation in the present invention; Figure 3 It is a structural schematic diagram of the support mechanism in the present invention; Figure 4 It is a schematic diagram of the rear three-dimensional structure of a ship protection structure with adjustable anti-collision effect after rotation in the present invention; Figure 5 It is a schematic diagram of the interior of the spring energy absorbing component of the present invention; Figure 6 for Figure 2 A magnified view of the structure at center; Figure 7 for Figure 3 A magnified view of the structure at B in the middle; Figure 8 for Figure 3 Enlarged view of the structure at point C in the middle.

[0021] In the figure: 1, mounting frame body; 2, supporting mechanism; 3, sliding limiting mechanism; 4, clamping fixing mechanism; 5, spring energy absorbing assembly; 6, steel structure energy absorbing assembly; 7, rubber energy absorbing assembly; 10, mounting mechanism; 101, hollow groove; 102, mounting rod; 103, mounting sheet; 104, mounting hole; 201, supporting plate; 202, connecting seat; 203, sliding groove; 204, limiting groove; 301, sliding connection part; 302, arc sliding groove; 303, arc plug plate; 304, anti-slip Drop block; 305, mounting groove; 306, roller; 401, side plate; 402, tooth one; 403, support; 404, tooth two; 405, limit slide; 406, first spring; 407, handle; 501, connecting column; 502, sleeve; 503, guide hole; 504, slot; 505, limit plate; 506, second spring; 601, arc-shaped steel plate; 602, steel structure mounting frame; 603, through-groove; 604, bearing; 605, unloading drum; 606, rubber sleeve. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0026] See also Figure 1-Figure 8 As shown, the present invention provides a technical solution: A ship protection structure with adjustable anti-collision effect, such as Figure 1 As shown, it includes a mounting frame body 1, an installation mechanism 10 for being installed on the outside of the hull is arranged on the inner side of the mounting frame body 1, a support mechanism 2 for installing an anti-collision structure is slidably connected to the outer side of the mounting frame body 1, a sliding limiting mechanism 3 is arranged at the lower end of the support mechanism 2 and the inner side of the mounting frame body 1, a clamping fixing mechanism 4 is arranged between the support mechanism 2 and the mounting frame body 1 through tooth meshing, a spring energy absorbing component 5 is arranged on the outer side of the support mechanism 2, and a steel structure energy absorbing component 6 and a rubber energy absorbing component 7 are connected to the outer side of the support mechanism 2 through the spring energy absorbing component 5.

[0027] In this embodiment, if Figure 2As shown, the mounting frame body 1 is an arc-shaped structure, and a plurality of hollow grooves 101 are provided on the mounting frame body 1, and the hollow grooves 101 are used to reduce the overall mass of the mounting frame body 1, and the mounting mechanism 10 includes a mounting rod 102 and a mounting plate 103, the mounting rod 102 is welded and fixed to the four corners of the inner side of the mounting frame body 1, and the mounting plate 103 and the mounting rod 102 are integrally formed, and two groups of symmetrically arranged mounting holes 104 are provided on the mounting plate 103, and before the device is installed, threaded holes need to be opened on the outer side of the hull, and then bolts are passed through the mounting holes 104 on the mounting plate 103 and then connected with the threaded holes.

[0028] Further, such as Figure 3 As shown, the support mechanism 2 includes a support plate 201 , which is an arc-shaped structure, and a connecting seat 202 is integrally formed on the outer side of the upper end of the support plate 201 , so that the support plate 201 can slide closely against the surface of the mounting frame body 1 .

[0029] like Figure 4 As shown, the sliding limiting mechanism 3 includes a sliding connection part 301 integrally formed on the inner side of the mounting frame body 1, an arc-shaped slide groove 302 is provided on the upper surface of the sliding connection part 301, and an arc-shaped plug plate 303 is integrally formed inwardly at the lower end of the support plate 201, and the arc-shaped plug plate 303 is inserted into the arc-shaped slide groove 302. The arc-shaped plug plate 303 inserted into the arc-shaped slide groove 302 has a limiting effect.

[0030] Further, such as Figure 8 As shown, anti-falling blocks 304 are integrally formed on both sides of the arc-shaped slide groove 302, and two groups of symmetrically arranged mounting grooves 305 are opened at the lower end of the arc-shaped plug plate 303, and rollers 306 are rotatably installed in the mounting grooves 305. The rollers 306 can make the support mechanism 2 slide better on the surface of the mounting frame body 1, and the anti-falling blocks 304 and the mounting rod 102 can prevent the support mechanism 2 from falling off from the side.

[0031] In this embodiment, if Figure 1-3 As shown, the clamping and fixing mechanism 4 includes a side plate 401 integrally formed on the upper end of the mounting frame body 1, one side of the side plate 401 is integrally formed with a tooth 1 402, and the upper end of the connecting seat 202 is slidably connected with a support 403, one side of the support 403 is integrally formed with a tooth 2 404, and a handle 407 is welded and fixed to the upper end of the support 403. The staff can drive the support mechanism 2 to slide on the mounting frame body 1 by holding the handle 407 and pushing it outwards, and then sliding it.

[0032] Further, such as Figure 6As shown, a sliding groove 203 is provided at the upper end of the connecting seat 202, and limiting grooves 204 are provided on both sides of the sliding groove 203. A limiting slide 405 is integrally formed at the lower end of the support 403. The support 403 and the connecting seat 202 are slidably connected through the cooperation of the sliding groove 203 and the limiting slide 405, and a first spring 406 is welded and fixed to the inner wall of the sliding groove 203, and the other end of the first spring 406 is welded and fixed to the limiting slide 405. The elastic force of the first spring 406 can press the tooth 2 404 on the support 403 to the tooth 1 402 on the side plate 401, thereby engaging and locking, and it is not easy to rotate during a collision. The limiting groove 204 limits the movement of the limiting slide 405.

[0033] As a preferred implementation of this embodiment, Figure 4 , 5 As shown, the steel structure energy absorbing assembly 6 includes a hollow arc-shaped steel plate 601, and the spring energy absorbing assembly 5 includes a connecting column 501 and a sleeve 502. The spring energy absorbing assembly 5 is provided with four groups, and the connecting column 501 is welded to the outer side of the support plate 201, and the end of the connecting column 501 is inserted into the sleeve 502. When a collision occurs, the spring energy absorbing assembly 5 can convert the kinetic energy of the collision into its own elastic potential energy.

[0034] Further, such as Figure 5 As shown, the sleeve 502 is welded to the inner side of the arc-shaped steel plate 601, and the sleeve 502 is provided with a guide hole 503 and a slot 504, the guide hole 503 and the slot 504 are connected, and the aperture of the guide hole 503 is smaller than the inner diameter of the slot 504, one end of the connecting column 501 passes through the guide hole 503 and is inserted into the slot 504, and the end of the connecting column 501 is integrally formed with a limiting piece 505, one side of the limiting piece 505 is welded with a second spring 506, one end of the second spring 506 is welded and fixed to the inner wall of the slot 504, and the various structures of the spring energy absorption component 5 will not be disbanded through the limiting action of the limiting piece 505.

[0035] In this embodiment, if Figure 7 As shown, two groups of arc-shaped elastic steel structure mounting frames 602 symmetrically arranged in an upper and lower manner are welded to the outer side of the arc-shaped steel plate 601, and multiple groups of through grooves 603 are evenly arranged on the elastic steel structure mounting frames 602. Bearings 604 are installed on the upper and lower walls of the through grooves 603, and a force unloading drum 605 is rotatably installed in the through grooves 603 through the bearings 604. A rubber sleeve 606 is sleeved on the outer side of the force unloading drum 605, and the rubber energy absorbing component 7 is composed of a cylindrical rubber block. The rubber energy absorbing component 7 is fixedly installed on the outer side of the arc-shaped steel plate 601, and the rubber energy absorbing component 7 is connected by bonding. In case of collision, the elastic steel structure mounting frame 602 can collapse and absorb energy, and the force unloading drum 605 thereon can rotate and absorb energy.

[0036] When the ship protection structure with adjustable anti-collision effect of this embodiment is used, a threaded hole needs to be opened on the surface of the bow position, and then the mounting hole 104 on the mounting plate 103 and the threaded hole are aligned, and then bolts are used to install; After installation, when the observer on board observes the risk of collision or the ship is at port, he / she will instruct the operator to adjust the position of the anti-collision structure; The staff pushes the handle 407 outwards to compress the first spring 406 for positioning, so that the teeth are unlocked, and then the support mechanism 2 is slid through the handle 407; After sliding to the predetermined collision direction, release the hand, and the teeth will re-engage with the first spring 406 to achieve locking of the anti-collision structure; When a collision occurs, the cylindrical rubber block in the rubber energy absorbing assembly 7 will first contact the collision object to absorb energy; At this time, the spring in the spring energy absorbing assembly 5 will also collapse and absorb energy; When the rubber energy absorbing assembly 7 and the spring energy absorbing assembly 5 collapse to a certain position, the collision object will collide with the steel structure mounting frame 602, and the steel structure mounting frame 602 collapses to absorb energy, and the unloading drum 605 will rotate to absorb energy at the same time.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A ship protection structure with adjustable anti-collision effect, comprising a mounting frame body (1), characterized in that: The inner side of the mounting frame body (1) is provided with a mounting mechanism (10) for mounting on the outer side of the hull; the outer side of the mounting frame body (1) is slidably connected with a support mechanism (2) for mounting an anti-collision structure; the lower ends of the support mechanism (2) and the inner side of the mounting frame body (1) are provided with a sliding limit mechanism (3); a clamping fixing mechanism (4) is provided between the support mechanism (2) and the mounting frame body (1) through tooth meshing; a spring energy absorption component (5) is provided on the outer side of the support mechanism (2); and the outer side of the support mechanism (2) is connected to a steel structure energy absorption component (6) and a rubber energy absorption component (7) through the spring energy absorption component (5).

2. The ship protection structure with adjustable anti-collision effect according to claim 1, characterized in that: The mounting frame body (1) is an arc-shaped structure, and a plurality of hollow grooves (101) are evenly arranged on the mounting frame body (1), the mounting mechanism (10) comprises a mounting rod (102) and a mounting sheet (103), the mounting rod (102) is welded and fixed to the four corners of the inner side of the mounting frame body (1), the mounting sheet (103) and the mounting rod (102) are integrally formed, and the mounting sheet (103) is provided with two groups of symmetrically arranged mounting holes (104).

3. The ship protection structure with adjustable anti-collision effect according to claim 1, characterized in that: The support mechanism (2) comprises a support plate (201), the support plate (201) is an arc-shaped structure, and a connection seat (202) is integrally formed on the outer side of the upper end of the support plate (201).

4. The ship protection structure with adjustable anti-collision effect according to claim 3, characterized in that: The sliding limit mechanism (3) comprises a sliding connection portion (301) integrally formed on the inner side of the mounting frame body (1); an arc-shaped sliding groove (302) is provided on the upper surface of the sliding connection portion (301); an arc-shaped inserting plate (303) is integrally formed inwardly at the lower end of the support plate (201); and the arc-shaped inserting plate (303) is inserted into the arc-shaped sliding groove (302).

5. The ship protection structure with adjustable anti-collision effect according to claim 4, characterized in that: Anti-falling blocks (304) are integrally formed on both sides of the arc-shaped slide groove (302), and two groups of symmetrically arranged mounting grooves (305) are opened at the lower end of the arc-shaped plug plate (303), and rollers (306) are rotatably mounted in the mounting grooves (305).

6. The ship protection structure with adjustable anti-collision effect according to claim 3, characterized in that: The clamping and fixing mechanism (4) comprises a side plate (401) integrally formed on the upper end of the mounting frame body (1), a tooth 1 (402) being integrally formed on one side of the side plate (401), a support (403) being slidably connected to the upper end of the connecting seat (202), a tooth 2 (404) being integrally formed on one side of the support (403), and a handle (407) being welded and fixed to the upper end of the support (403).

7. The ship protection structure with adjustable anti-collision effect according to claim 6, characterized in that: The upper end of the connecting seat (202) is provided with a sliding groove (203), and both sides of the sliding groove (203) are provided with limiting grooves (204); the lower end of the support (403) is integrally formed with a limiting slide seat (405); the support (403) and the connecting seat (202) are slidably connected via the matching of the sliding groove (203) and the limiting slide seat (405); a first spring (406) is welded and fixed to the inner wall of the sliding groove (203); and the other end of the first spring (406) is welded and fixed to the limiting slide seat (405).

8. The ship protection structure with adjustable anti-collision effect according to claim 3, characterized in that: The steel structure energy absorption component (6) comprises a hollow arc-shaped steel plate (601), and the spring energy absorption component (5) comprises a connecting column (501) and a sleeve (502). The spring energy absorption component (5) is provided with four groups, and the connecting column (501) is welded to the outside of the support plate (201), and the end of the connecting column (501) is inserted into the sleeve (502).

9. The ship protection structure with adjustable anti-collision effect according to claim 8, characterized in that: The sleeve (502) is welded to the inner side of the arc-shaped steel plate (601), and the sleeve (502) is provided with a guide hole (503) and a slot (504), the guide hole (503) and the slot (504) are connected, and the aperture of the guide hole (503) is smaller than the inner diameter of the slot (504), one end of the connecting column (501) passes through the guide hole (503) and is inserted into the slot (504), and a limiting plate (505) is integrally formed at the end of the connecting column (501), a second spring (506) is welded to one side of the limiting plate (505), and one end of the second spring (506) is welded and fixed to the inner wall of the slot (504).

10. The ship protection structure with adjustable anti-collision effect according to claim 8, characterized in that: Two groups of arc-shaped elastic steel structure mounting frames (602) symmetrically arranged in an upper and lower direction are welded to the outer side of the arc-shaped steel plate (601); a plurality of groups of through grooves (603) are evenly arranged on the elastic steel structure mounting frames (602); bearings (604) are installed on the upper and lower walls of the through grooves (603); a force unloading rotating cylinder (605) is rotatably installed in the through groove (603) via the bearings (604); a rubber sleeve (606) is sleeved on the outer side of the force unloading rotating cylinder (605); the rubber energy absorbing component (7) is composed of a columnar rubber block; and the rubber energy absorbing component (7) is fixedly installed on the outer side of the arc-shaped steel plate (601).

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