TW202326007A - Energy-absorbing damper comprising an outer sleeve, an inner sleeve, a plurality of limit pieces and a plurality of buffer ball groups - Google Patents

Abstract

The energy-absorbing damper of this invention includes an outer sleeve, an inner sleeve, a plurality of limit pieces and a plurality of buffer ball groups. The inner sleeve is installed in the outer sleeve, and the inside of the inner sleeve is communicated with the inside of the outer sleeve to form an accommodating space. Both ends of the limit piece are respectively set on the outer sleeve and the inner sleeve. The buffer ball group includes two spheres made of energy-absorbing material and is accommodated in the accommodating space. When the energy-absorbing damper of this invention is applied by a force to make the outer sleeve and the inner sleeve relatively close to each other, the plurality of buffer ball groups in the accommodating space will be squeezed and deformed to absorb energy so as to achieve the damping effect. After the spheres of the buffer ball groups are plastically deformed, the energy-absorbing damper can continue to be used by replacing the plurality of the buffer ball groups, which can effectively reduce the maintenance cost. Furthermore, the energy-absorbing damper has a variety of application methods.

Description

energy absorbing damper

The invention is an energy-absorbing damper, especially an energy-absorbing damper with a plurality of buffer ball groups inside.

In order to strengthen the structure of the building, so that the building can withstand the vibration and shaking caused by the earthquake, so as to avoid or reduce the damage of the building, in the reinforcement project of the building, it will be inclined between the two columns of the building. A steel frame and an oil pressure damper are arranged in the direction, and the two ends of the steel frame are respectively connected to a column and the oil pressure damper, and the oil pressure damper is connected to another column. When an earthquake occurs, the building When the column is stressed, the column will vibrate or shake to generate displacement, and stretch or compress the oil damper through the steel frame.

Wherein, the hydraulic damper includes a damping cylinder and a piston extending in the damping cylinder, the inside of the damping cylinder is filled with damping oil, when the hydraulic damper is stretched or compressed, it will The piston is driven to move in the damping cylinder, and the damping oil in the damping cylinder will generate resistance to the piston, thereby offsetting the partial force of the column to reduce the vibration or shaking displacement of the column.

However, the hydraulic damper will age after being used for a long time, or when the piston is pressed many times, the structural strength of the joint between the piston and the damping cylinder will be reduced, resulting in damping oil leakage. Leakage will affect the damping effect of the hydraulic damper. At this time, in order to avoid the structural strength of the building being affected, the entire hydraulic damper will need to be disassembled and replaced, resulting in high maintenance costs, but there is still improvement. of space.

The main purpose of this creation is to provide an energy-absorbing damper, hoping to improve the problem of high maintenance cost of the current hydraulic damper.

In order to achieve the purpose of exposing, the energy-absorbing damper of this invention defines a buffering direction, and includes: An outer sleeve, the inside of the outer sleeve is hollow, and a set of openings is formed at one end, and the set of openings communicates with the inside of the outer sleeve; An inner sleeve, which is arranged in the outer sleeve so that it can move relatively linearly, the inside of the inner sleeve is hollow, and an installation opening is formed at one end, and the inner sleeve has an end edge of the installation opening The buffering direction extends into the assembly opening of the outer sleeve, and the interior of the inner sleeve communicates with the interior of the outer sleeve to form an accommodating space; A plurality of flexible stoppers, the two ends of each stopper are respectively arranged on the outer sleeve and the inner sleeve; and A plurality of buffer ball groups, the plurality of buffer ball groups are respectively arranged between the outer sleeve and the inner sleeve, and are located in the accommodating space, each buffer ball group includes two spheres and a connecting structure, the two spheres A through hole is formed respectively, and the connection structure is passed through the through hole of the two spheres, and respectively pivoted to the two spheres, the two spheres are made of energy-absorbing material, and the connection structure is made of rigid material.

The energy-absorbing damper of this invention can be used to absorb the energy transmitted along the buffering direction. When the energy-absorbing damper is compressed by force, the outer sleeve and the inner sleeve will be squeezed into the accommodation space The plurality of buffer ball groups, the two balls of each buffer ball group will be respectively compressed and elastically deformed to absorb energy. Relatively rotated, the through holes of the spheres will be retracted and plastically deformed, causing the buffer ball group to undergo elastic-plastic deformation, thereby further absorbing energy, and the connection between the two spheres can be achieved through the connection structure. To produce damping energy dissipation, compression resistance, shear resistance and torsion resistance functions opposite to the direction of the force source, so that the energy absorbing damper can effectively absorb energy and provide damping functions, and when the ball of the buffer ball group During plastic deformation, the energy-absorbing damper can continue to be used by replacing the plurality of buffer ball groups, thereby effectively reducing maintenance costs.

Please refer to Fig. 1 to Fig. 9, which is a preferred embodiment of the energy-absorbing damper 1 of this invention, which defines a buffering direction D1, and includes an outer sleeve 10, an inner sleeve 20, and a plurality of flexible The limiter 30 and the plurality of buffer ball groups 40 .

As shown in FIG. 1 and FIG. 2 , the inside of the outer sleeve 10 is hollow, and a set of openings 11 is formed at one end, and the set of openings 11 communicates with the inside of the outer sleeve 10 .

As shown in Figures 1 to 4, the inner sleeve 20 is set in the outer sleeve 10 so that it can move relatively linearly. The inside of the inner sleeve 20 is hollow, and an installation opening 21 is formed at one end. The inner sleeve 20 has one end of the installation opening 21 extending into the assembly opening 11 of the outer sleeve 10 along the buffering direction D1, and the inside of the inner sleeve 20 communicates with the inside of the outer sleeve 10 to form a Set space 12.

In addition, the outer sleeve 10 includes an outer cylinder portion 13 and a set of seats 14, one end of the outer cylinder portion 13 forms the set of openings 11, and the set of seats 14 is arranged at the other end of the outer cylinder portion 13, The set of seats 14 is formed with a plurality of sets of holes 141 and a plurality of sets of rings 142, the plurality of sets of holes 141 and the plurality of sets of rings 142 are arranged at intervals in a ring shape; the inner sleeve 20 includes an inner cylinder portion 22 And a mounting seat 23, one end of the inner cylinder portion 22 forms the installation opening 21, and can extend into the outer cylinder portion 13, the mounting seat 23 is arranged on the other end of the inner cylinder portion 22, the installation The seat 23 is formed with a plurality of installation holes 231 and a plurality of installation rings 232 , and the plurality of installation holes 231 and the plurality of installation rings 232 are arranged at intervals in a ring shape.

As shown in Figures 1 and 3, the two ends of each limiting member 30 are respectively arranged on the outer sleeve 10 and the inner sleeve 20. In a preferred embodiment of the invention, the limiting member 30 is As for a steel cable, preferably, the two ends of the plurality of limiting parts 30 are respectively arranged on the plurality of installation rings 142 and the plurality of installation rings 232 .

In addition, the inner sleeve 20 has a refill port 221 and a cover plate 222, the refill port 221 communicates with the interior of the inner sleeve 20, the cover plate 222 is detachably arranged on the refill port 221, and is used to close The replenishment port 221, preferably, the replenishment port 221 is formed in the inner cylinder portion 22, and the outside of the cover plate 222 is parallel to the outside of the inner cylinder portion 22, so as to prevent the inner cylinder portion 22 of the inner sleeve 20 from stretching. Interference occurs when inserting the outer tube portion 13 of the outer sleeve 10 .

In addition, the outer sleeve 10 includes a plurality of reinforcing ribs 15, and the plurality of reinforcing ribs 15 are respectively arranged at the junction of the outer cylinder portion 13 and the set of seats 14; the inner sleeve 20 includes a plurality of reinforcing ribs 24, and the plurality of reinforcing ribs Ribs 24 are respectively provided at the joints of the inner cylinder portion 22 and the installation seat 23, and by providing the plurality of reinforcing ribs 15 and the plurality of reinforcing ribs 24, the outer sleeve 10 and the inner sleeve 20 can be respectively raised. Structural strength.

As shown in Figures 5 to 9, the plurality of buffer ball groups 40 are respectively arranged between the outer sleeve 10 and the inner sleeve 20, and are located in the accommodating space 12, and each buffer ball group 40 includes two balls 41 and a connection structure 42, a through-hole 411 is respectively formed in the two spheres 41, the connection structure 42 is penetrated in the through-hole 411 of the two spheres 41, and pivotally connected to the two spheres 41 respectively, the two spheres 41 are formed by The connecting structure 42 is made of rigid material, and the two spheres 41 can be made of energy-absorbing materials with different hardness. The energy-absorbing material means that it can absorb Energy materials, such as sponge, latex and rubber, etc., preferably, the two spheres 41 are made of vulcanized rubber.

In addition, as shown in Fig. 6A, Fig. 6B and Fig. 6C, the connection structure 42 of each buffer ball group 40 includes a bolt 421 and a plurality of nuts 422, and the bolt 421 forms a middle section 423 and a set of section 424 in sequence The bolt 421 extends from the through hole 411 of one of the two spheres 41, the middle section 423 of the bolt 421 is located between the two spheres 41, and the assembly section 424 of the bolt 421 extends into the other. The through hole 411 of the sphere 41, the plurality of nuts 422 are respectively screwed on the bolt 421. Preferably, the bolt 421 is a high tension bolt, wherein two nuts are screwed through the assembly section 424 of the bolt 421. The cap 422 can improve the assembly stability between the connecting structure 42 and the two spheres 41, and between the nut 422 and the sphere 41 and between the bolt 421 and the sphere 41 can also be provided with Washers to increase the contact area during locking, thereby improving the locking stability.

The buffer ball assembly 40 has various shapes. As shown in FIG. 6A, the two spheres 41 are adjacent to each other, and the number of the plurality of nuts 422 is two, and are screwed on the assembly section 424 of the bolt 421; as shown in FIG. 6B As shown, there is a distance between the two spheres 41, the number of the plurality of nuts 422 is four, and the two nuts 422 are screwed on the middle section 423 of the bolt 421 and abut against the two spheres 41 respectively, and the other two The nut 422 is screwed on the assembly section 424 of the bolt 421; as shown in FIG. The number of 422 is five, three nuts 422 are screwed on the middle section 423 of the bolt 421, and the other two nuts 422 are screwed on the assembly section 424 of the bolt 421, regardless of the state of the buffer ball group 40 All of them have the functions of damping energy dissipation, compression resistance, shear resistance and torsion resistance.

Wherein, when the distance between the two spheres 41 is relatively large, the two spheres 41 can be relatively torsionally larger to improve the torsion resistance, and when the middle section 423 of the bolt 421 is provided with more When the nuts 422 are used, the structural strength of the connection structure 42 is increased, thereby improving the shear resistance of the buffer ball group 40. Furthermore, the design of the assembly section 424 of the bolt 421 is screwed through the two nuts 422. , can effectively improve the bonding strength between the bolt 421 and the nut 422 .

The energy-absorbing damper 1 of the present invention can be used to absorb energy. When the energy-absorbing damper 1 is stressed and the outer sleeve 10 and the inner sleeve 20 are compressed along the buffering direction D1, the accommodating space The plurality of buffer ball groups 40 in 12 will be squeezed and deformed to absorb energy, thereby achieving the effect of damping.

As shown in Figure 13, taking the energy-absorbing damper 1 connected to a steel frame 50 and installed between two columns 60 of a building as an example, the staff can pass the external bolts through the outer sleeve 10 The assembly hole 141 of the assembly seat 14 and a column 60, and the external bolts are passed through the installation hole 231 of the installation seat 23 of the inner sleeve 20 and the steel frame 50, and the steel frame 50 is connected Another upright 60, when the two uprights 60 compress the energy-absorbing damper 1 due to force, the outer sleeve 10 and the inner sleeve 20 will approach each other along the buffering direction D1, and press the The plurality of cushioning ball groups 40 placed in the space 12 can deform the ball 41 of the buffering ball group 40 and thereby absorb the energy transmitted by the column 60. The sleeve 10 and the inner sleeve 20 can prevent the outer sleeve 10 from being separated from the inner sleeve 20, and the plurality of stoppers 30 are flexible, thereby avoiding the compression of the energy-absorbing damper 1 Affected.

As shown in Fig. 10 and Fig. 11, in view of the single buffer ball group 40 in the accommodating space 12, one of the spheres 41 in the two spheres 41 will be fixedly surrounded by the remaining buffer ball groups 40, so when the other When a sphere 41 is deformed and moved or twisted under force, the two spheres 41 are connected by the connecting structure 42, so that the sphere 41 that moves under force can reset and dissipate energy, and the sphere 41 that is fixed and bounded can generate and force source Damping energy dissipation, compression resistance, shear resistance and torsion resistance functions in the opposite direction; the sphere 41 that is twisted by force can pivot relative to the connection structure 42, and the other sphere 41 that does not transmit torsion force, so as to enhance the Describe the torsion resistance of the buffer ball group 40.

In addition, please refer to FIG. 12 , which is a stress-strain schematic diagram of the energy-absorbing damper 1 when it is stressed. , the buffer ball group 40 will first undergo deformation stage one (P1): the two balls 41 are compressed and undergo elastic deformation. Deformation stage two (P2): the two spheres 41 will be distorted and deformed, and the through holes 411 of the spheres 41 will shrink and undergo plastic deformation, causing the spheres 41 to undergo elastic-plastic deformation, and then the buffer ball group 40 will Going through the third deformation stage (P3): the through-hole 411 is further retracted to cause the sphere 41 to undergo plastic deformation, and when the force on the energy-absorbing damper 1 continues to increase, the energy-absorbing damper 1 The buffer ball group 40 will repeatedly experience deformation stage two (P2) and deformation stage three (P3), that is, the two balls 41 undergo elastic-plastic deformation and plastic deformation cyclically, so the energy-absorbing damper 1 can withstand faults such as Repeated shearing of displacement.

In addition, as shown in FIG. 7 , the plurality of buffer ball groups 40 can be stacked and arranged parallel to the buffer direction D1 in the accommodating space 12 ; or as shown in FIG. 8 , the plurality of buffer ball groups 40 are in the accommodating space 12 It can be stacked and arranged vertically to the buffering direction D1; or as shown in FIG. No matter how they are arranged, the energy-absorbing damper 1 can effectively absorb energy to achieve a damping effect. Wherein, when the plurality of buffer ball groups 40 are randomly stacked in the accommodating space 12, they will have better energy-absorbing properties. can effect.

Moreover, after the ball 41 of the buffer ball group 40 is plastically deformed, the worker can disassemble or loosen the plurality of stoppers 30, so that the inner sleeve 20 and the outer sleeve 10 are separated and the inner sleeve is exposed. 20, and then disassemble the cover plate 222, and replace the buffer ball group 40 in the accommodating space 12 through the supplementary port 221, thereby improving the convenience of replacing the buffer ball group 40. In addition, through Adjusting the plurality of limiters 30 can control the distance between the assembly seat 14 of the outer sleeve 10 and the installation seat 23 of the inner sleeve 20, thereby adjusting the overall height of the energy-absorbing damper 1, To enhance the construction scope of this creation.

The energy-absorbing damper 1 of the present invention has multiple application methods, such as being used for reinforcing structures of buildings. As shown in FIG. between 60 to serve as a reinforcement structure for buildings; as shown in Figure 15, the energy-absorbing damper 1 can be connected to foundation piles buried in the ground through a supporting column 80, and is arranged on a retaining wall 90 Or an outer wall of a building, whereby the seismic capacity of the retaining wall 90 and the building can be improved.

In addition, the energy-absorbing damper 1 can be used to provide a buffer function, as shown in Figure 16, the energy-absorbing damper 1 can be placed at the bottom of the elevator shaft, and can be used as a damping when the elevator car A fails and falls device to reduce the impact force of the fall of the elevator car A; When the wharf anti-collision barrier B is hit, it absorbs the impact energy, thereby improving the protection safety of the wharf anti-collision barrier B; On the interception pile C, and connect an interception cable D, thereby can absorb impact energy when driftwood and stone impact described interception cable D; As shown in Fig. Between the rockfall retaining wall and a rockfall retaining net E, the impact force of falling rocks can be absorbed when the rockfall rolls down the hillside, and the structural strength of the rockfall retaining net E can be improved.

Furthermore, the energy-absorbing damper 1 can be used to improve road safety. As shown in FIG. When the vehicle hits the curb guardrail F, it absorbs the impact force and provides damping to improve the safety of the driver; Between the west guardrails G, so as to provide a buffer when the vehicle hits the New Jersey guardrail G; as shown in Figure 22, the energy-absorbing damper 1 can be arranged on the outside of the turning of the slope road such as a mountain road or a parking lot entrance and exit slope , and installed between the outer guard wall and an outer guardrail H, when the vehicle accidentally collides with the outer guardrail H when going up and downhill, the energy-absorbing damper 1 can provide damping and buffering.

To sum up, when the energy-absorbing damper 1 of the present invention is stressed and the outer sleeve 10 and the inner sleeve 20 are compressed along the buffering direction D1, the plurality of buffer ball groups in the accommodating space 12 40 will be squeezed and deformed to absorb energy to achieve the damping effect, and when the ball 41 of the buffer ball group 40 is plastically deformed, by replacing the plurality of buffer ball groups 40, the energy-absorbing damper 1 can continue The use can effectively reduce the cost of maintenance, and the energy-absorbing damper 1 has multiple application modes, thereby effectively improving the construction scope of the invention.

1: Energy absorbing damper 10: Outer sleeve 11: Group setting port 12:Accommodating space 13: Outer cylinder 14: Set seat 141: Set holes 142: set ring 15: Reinforcing rib 20: inner sleeve 21: Installation mouth 22: Inner cylinder 221: Supplementary port 222: cover plate 23: Installation base 231: installation hole 232: installation ring 24: Rib 30: limit piece 40: buffer ball group 41: sphere 411: through hole 42: Connection structure 421: Bolt 422: Nut 423: middle section 424: set segment 50: steel frame 60: column 70: two-way steel frame 80: support column 90: Retaining Wall D1: buffer direction P1: Deformation stage one P2: Transformation stage two P3: Transformation stage three A: Elevator car B: Wharf anti-collision barrier C: Earth-rock flow interception pile D: intercept cable E: Rockfall protection net F: curb guardrail G: New Jersey Guardrail H: outer guardrail

Fig. 1: A three-dimensional schematic diagram of a preferred embodiment of the energy-absorbing damper of this invention. Figure 2: An exploded schematic diagram of the outer sleeve and inner sleeve of the energy-absorbing damper of this creation. Figure 3: A schematic diagram of the side view of the energy-absorbing damper created for this invention. Fig. 4: is a schematic cross-sectional view of A-A in Fig. 3 . Figure 5: A three-dimensional schematic diagram of one form of the buffer ball group of the energy-absorbing damper of this invention. Fig. 6A: A partial cross-sectional schematic diagram of one form of the buffer ball group of the energy-absorbing damper of this invention. Fig. 6B: A partial cross-sectional schematic diagram of another form of the buffer ball group of the energy-absorbing damper of this invention. Fig. 6C: a partial cross-sectional schematic diagram of a preferred embodiment of the buffer ball group of the energy-absorbing damper of the present invention. Figure 7: It is a side view cross-sectional schematic diagram of the cushioning ball groups of the energy-absorbing damper of this invention stacked and arranged parallel to the cushioning direction. Figure 8: It is a side view cross-sectional schematic diagram of the buffer ball groups of the energy-absorbing damper of this invention stacked and arranged vertically to the buffer direction. Figure 9: A side view cross-sectional schematic diagram of the randomly stacked buffer ball groups of the energy-absorbing damper of this invention. Figure 10: Schematic diagram of the stress state of the buffer ball group of the energy-absorbing damper of this invention (1). Figure 11: Schematic diagram of the force state of the buffer ball group of the energy-absorbing damper of this creation (2). Figure 12: A schematic diagram of the stress-strain of the energy-absorbing damper of this invention when it is stressed. Figure 13: It is a schematic diagram of the connecting steel frame of the energy-absorbing damper of this invention and installed between the two columns of the building. Figure 14: It is a schematic diagram of the energy-absorbing damper connected to the two-way steel frame and installed between the two columns of the building. Figure 15: A schematic diagram of the energy-absorbing damper installed on the retaining wall for this creation. Figure 16: A schematic diagram of the energy-absorbing damper created by the present invention as the fault fall damper of the elevator. Figure 17: A schematic diagram of the energy-absorbing damper used in the wharf anti-collision barrier for this creation. Figure 18: A schematic diagram of an energy-absorbing damper created for this purpose to intercept landslides in rivers. Figure 19: A schematic diagram of the energy-absorbing damper created for this project used in the rock-falling wall of the mountainside road. Figure 20: Schematic diagram of the energy-absorbing damper used for curb barriers created for this purpose. Figure 21: Schematic diagram of the energy-absorbing damper used in the highway guardrail in New Jersey. Figure 22: A schematic diagram of the energy-absorbing damper used in this creation for the outer guardrail on a slope.

1: Energy absorbing damper

10: Outer sleeve

13: Outer cylinder

14: Set seat

141: Set holes

142: set ring

15: Reinforcing rib

20: inner sleeve

22: Inner cylinder

222: cover plate

23: Installation base

231: installation hole

232: installation ring

24: Rib

30: limit piece

Claims (10)

An energy-absorbing damper, which defines a buffering direction, and includes: An outer sleeve, the inside of the outer sleeve is hollow, and a set of openings is formed at one end, and the set of openings communicates with the inside of the outer sleeve; An inner sleeve, which is arranged in the outer sleeve so that it can move relatively linearly, the inside of the inner sleeve is hollow, and an installation opening is formed at one end, and the inner sleeve has an end edge of the installation opening The buffering direction extends into the assembly opening of the outer sleeve, and the interior of the inner sleeve communicates with the interior of the outer sleeve to form an accommodating space; A plurality of flexible stoppers, the two ends of each stopper are respectively arranged on the outer sleeve and the inner sleeve; and A plurality of buffer ball groups, the plurality of buffer ball groups are respectively arranged between the outer sleeve and the inner sleeve, and are located in the accommodating space, each buffer ball group includes two spheres and a connecting structure, the two spheres A through hole is formed respectively, and the connection structure is passed through the through hole of the two spheres, and respectively pivoted to the two spheres, the two spheres are made of energy-absorbing material, and the connection structure is made of rigid material. The energy-absorbing damper according to claim 1, wherein the plurality of cushioning ball groups can be stacked and arranged in the accommodating space parallel to or perpendicular to the cushioning direction. The energy-absorbing damper according to claim 1, wherein the plurality of buffer ball groups are randomly stacked and arranged in the accommodating space. The energy-absorbing damper as described in claim 1, wherein the inner sleeve has a supplementary port and a cover plate, the supplementary port communicates with the interior of the inner sleeve, and the cover plate is detachably arranged on the supplementary port , and used to close the supplementary port. The energy-absorbing damper as described in claim 3, wherein the inner sleeve has a supplementary port and a cover plate, the supplementary port communicates with the interior of the inner sleeve, and the cover plate is detachably arranged on the supplementary port , and used to close the supplementary port. The energy-absorbing damper as described in any one of Claims 1 to 5, wherein the outer sleeve includes an outer cylinder portion and a set of seats, one end of the outer cylinder portion forms the set of openings, and the set of seats Set on the other end of the outer cylinder, the set of seats is formed with multiple sets of holes and multiple sets of rings, the multiple sets of holes and the multiple sets of rings are respectively arranged at intervals in a ring; the inner sleeve includes a Inner cylinder part and a installation seat, one end of the inner cylinder part forms the installation opening, and can extend into the outer cylinder part, the installation seat is arranged on the other end of the inner cylinder part, and the installation seat forms There are a plurality of installation holes and a plurality of installation rings, the plurality of installation holes and the plurality of installation rings are respectively arranged at intervals in a ring, and the two ends of the plurality of limiting parts are respectively arranged on the plurality of installation rings and the plurality of installation rings. ring. The energy-absorbing damper as described in claim 6, wherein the outer sleeve includes a plurality of reinforcing ribs, and the plurality of reinforcing ribs are respectively arranged at the junction of the outer cylinder portion and the set of seats; the inner sleeve includes a plurality of reinforcing ribs , the plurality of reinforcing ribs are respectively arranged at the junction of the inner cylinder portion and the installation seat. The energy-absorbing damper as described in any one of claims 1 to 5, wherein the connection structure of each buffer ball group includes a bolt and a plurality of nuts, and the bolts form a middle section and a set of sections in sequence, the Bolts extend from the through hole of one of the two spheres, the middle section of the bolt is located between the two spheres, the assembly section of the bolt extends into the through hole of the other sphere, and the plurality of nuts are respectively screwed. Set in the middle section and assembly section of the bolt. The energy-absorbing damper as described in claim 6, wherein the connection structure of each buffer ball group includes a bolt and a plurality of nuts, and the bolt forms a middle section and a set of sections in sequence, and the bolt is formed from the two spheres The through-hole of one of the spheres extends, the middle section of the bolt is located between the two spheres, the assembly section of the bolt extends into the through-hole of the other sphere, and the plurality of nuts are respectively screwed in the middle of the bolt segment and set segment. The energy-absorbing damper as described in Claim 7, wherein the connection structure of each buffer ball group includes a bolt and a plurality of nuts, and the bolt forms a middle section and a set of sections in sequence, and the bolt is formed from the two spheres The through-hole of one of the spheres extends, the middle section of the bolt is located between the two spheres, the assembly section of the bolt extends into the through-hole of the other sphere, and the plurality of nuts are respectively screwed in the middle of the bolt segment and set segment.

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