Splicing type beam column structure

Abstract

The invention discloses a splicing type beam column structure which comprises a stand column and a control system, a spherical hinge piece is arranged at the top of the stand column, a vertical beam column is arranged above the spherical hinge piece, a plurality of cross beams are evenly distributed on the periphery of the spherical hinge piece, and a plurality of adjusting assemblies are evenly arranged on the stand column. The adjusting assemblies and the cross beams are distributed in a staggered mode, each adjusting assembly comprises a fixing block fixedly installed on the corresponding stand column, a first sliding groove is formed in each fixing block, a center groove is formed in the upper section of each stand column, a receding groove is formed between each first sliding groove and the corresponding center groove, and a sliding shaft is slidably connected to each fixing block; and a magnetic block is arranged in the center groove, an electromagnetic block is arranged above the center groove, and the problem that an existing assembly type beam column connecting structure still has certain defects in the aspect of anti-seismic performance is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of earthquake-resistant buildings, and particularly relates to a spliced ​​beam-column structure. Background Art

[0002] In the field of building structures, beam-column connections are a crucial component of a building's structure, and their performance directly impacts the safety and stability of the entire building. Traditional beam-column connections are mostly rigid. Due to their lack of sufficient deformation capacity, these connections can easily lead to stress concentration when exposed to dynamic seismic loads, potentially causing structural damage or even collapse. With the continuous advancement of construction technology, higher requirements are being placed on the seismic resistance and deformation adaptability of building structures.

[0003] In recent years, modular structures have been widely used in the construction industry due to their flexibility, adjustability, and high material utilization. However, existing modular beam-column connection structures still have certain shortcomings in terms of seismic performance. The modular node design is still rigid or semi-rigid, which makes it difficult to provide sufficient deformation capacity to dissipate energy under earthquakes. Alternatively, the movable components are relatively simple in structure, and the buffering and energy dissipation mechanisms are not perfect, resulting in brittle failure or connection failure under strong earthquakes. Therefore, it is of great practical significance to develop a beam-column connection structure that combines the advantages of modular structures with good seismic performance. Summary of the Invention

[0004] The purpose of the present invention is to provide a spliced ​​beam-column structure for existing devices to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a spliced ​​beam-column structure, comprising a column and a control system, wherein a spherical hinge is provided on the top of the column, a vertical beam is provided above the spherical hinge, a plurality of cross beams are evenly distributed around the spherical hinge, and a plurality of adjustment components are evenly provided on the column, wherein the adjustment components and the cross beams are staggered;

[0006] The adjustment assembly includes a fixed block fixedly mounted on the column, a first slide groove is provided on the fixed block, a central groove is provided inside the upper section of the column, a relief groove is provided between the first slide groove and the central groove, a sliding shaft is slidably connected to the fixed block, a magnetic block is provided in the central groove, and an electromagnetic block is provided above the central groove;

[0007] Both ends of the sliding shaft are fixedly connected with first sliding rods, the upper side of each first sliding rod is slidably connected with a second sliding rod, two fixed sliding rails are fixedly arranged on the upright column above each fixed block, the second sliding rod and the fixed sliding rail are in sliding fit, a connecting rod is connected between the sliding shaft and the magnetic block, a connecting block is arranged between each pair of second sliding rods, and a plug-in fixing pin is arranged on the inner side of each connecting block.

[0008] The lower end of the upright column is fixedly connected with a support, the upright column and the support are detachably connected, and an acceleration sensor is further arranged on the support.

[0009] The top of the upright column is provided with a matching ball groove, the opposite positions of the periphery of the matching ball groove are provided with avoidance circular grooves, the remaining protruding portions of the periphery of the matching ball groove are clamping claws, a through hole is formed in each clamping claw, the through hole is matched with the plug-in fixing pin, the plug-in fixing pin is inserted into the spherical hinge member through the through hole, and a plug-in hole matched with the plug-in fixing pin is formed in the spherical hinge member.

[0010] The upper side of each clamping claw is fixedly connected with a limiting ball shell, the inner side of the limiting ball shell is attached to the outer side of the spherical hinge member, and a rebound mechanism is arranged on the two sides of each limiting ball shell and each avoidance circular groove.

[0011] The rebound mechanism comprises an upper rubber layer and a lower rubber layer, a plurality of elastic blocks are fixedly connected to the inner wall of the upper rubber layer, a placing groove is formed in the lower wall of the lower rubber layer and located directly below the elastic blocks, a common spring is arranged in each placing groove, a positioning shaft is fixedly connected between each elastic block and the common spring, and a plurality of butterfly springs are sleeved on each positioning shaft.

[0012] The first sliding rod and the second sliding rod are both L-shaped, and the horizontal sections of the two are closely abutted at the positions of the vertical sections of the other, a second sliding groove is formed in the two sides of each second sliding rod, stable hook blocks are fixedly arranged on the two sides of the upper side of each first sliding rod, and the stable hook blocks on the same side are hooked and slidably connected with the second sliding groove.

[0013] A connecting column is fixedly arranged on the spherical hinge member, and the top of the connecting column is detachably fixedly assembled with the vertical beam column.

[0014] A third sliding groove is formed in the side of each fixed sliding rail close to the second sliding rod, a sliding block is fixedly arranged on the side of the upper end of each second sliding rod close to the fixed sliding rail, and the sliding block and the third sliding groove are in sliding fit.

[0015] The present invention further states that the acceleration sensor and the electromagnetic block are both connected to the control system signal.

[0016] The present invention further illustrates the seismic resistance method of the spliced ​​beam-column structure. When an earthquake occurs, the acceleration sensor senses the vibration wave and transmits the signal to the control system. The control system controls the electromagnetic block to be energized to generate magnetism. The magnetic block moves upward under the magnetic attraction of the electromagnetic block. The magnetic block drives the sliding shaft to slide upward along the first sliding groove through the connecting rod. The first sliding rods at both ends of the sliding shaft slide relative to the second sliding rods. At the same time, the second sliding rods slide outward relative to the fixed slide rail, and then, through the connecting block, the plug-in fixing pin is driven to slide out of the through hole on the column and the plug-in hole on the spherical hinge. At this time, the spherical hinge can drive the vertical beam and the horizontal beam to swing at a certain angle relative to the column under the influence of vibration.

[0017] The present invention further describes the seismic resistance method of the spliced ​​beam-column structure. When the crossbeam collides with the rebound mechanism during the swinging process, it first collides with the upper rubber layer, and the elastic block in the upper rubber layer is compressed, and at the same time, the positioning shaft is squeezed. The butterfly spring on the positioning shaft undergoes elastic deformation to absorb part of the energy. At the same time, the positioning shaft further squeezes the ordinary spring in the lower rubber layer downward, and then the butterfly spring and the ordinary spring rebound.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) By providing a spherical hinge, an adjustment assembly, and a control system that work together, the present invention can automatically unlock when an earthquake occurs, allowing the vertical beams and horizontal beams to swing in a controlled manner relative to the columns, effectively dissipating and dissipating earthquake energy, avoiding structural damage caused by stress concentration in traditional rigid connections, and significantly improving the seismic performance and overall safety of the spliced ​​beam-column structure;

[0020] (2) By providing a rebound mechanism, the present invention provides an effective buffering and energy absorption mechanism during the swinging process of the beam. When the beam collides with the rebound mechanism, the upper rubber layer, elastic block, butterfly spring and ordinary spring work together to not only absorb the impact energy, but also make the beam rebound through the rebound force, thus avoiding continuous collision, further dissipating the vibration energy generated by the earthquake, and reducing the impact on the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0023] Figure 2 is an enlarged view of region A of an embodiment of the present invention;

[0024] Figure 3 is a schematic diagram of the top of a column according to an embodiment of the present invention;

[0025] Figure 4 is a cross-sectional view of the top of a column according to an embodiment of the present invention;

[0026] Figure 5 is an enlarged view of region B of an embodiment of the present invention;

[0027] Figure 6 is an enlarged view of region C of an embodiment of the present invention;

[0028] Figure 7 is a cross-sectional view of a rebound mechanism according to an embodiment of the present invention;

[0029] In the figure: 1, column; 11, center groove; 2, spherical hinge; 21, connecting column; 22, limiting ball shell; 3, vertical beam column; 4, cross beam; 5, adjustment component; 50, matching ball groove; 501, avoidance circular groove; 502, claw; 5021, through hole; 51, fixing block; 511, first slide groove; 512, avoidance groove; 52, slide shaft; 521, first slide rod; 5211, stabilizing hook block; 522, second slide rod ;5221, second slide groove; 53, connecting rod; 54, magnetic block; 55, electromagnetic block; 56, fixed slide rail; 561, third slide groove; 57, slider; 58, connecting block; 59, plug-in fixing pin; 6, rebound mechanism; 61, upper rubber layer; 62, lower rubber layer; 621, placement groove; 63, elastic block; 64, ordinary spring; 65, positioning shaft; 66, butterfly spring; 7, acceleration sensor; 8, support. DETAILED DESCRIPTION

[0030] The following is a non-limiting detailed description of the technical solutions of the present invention in conjunction with preferred embodiments and the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0031] An embodiment of the present invention provides a spliced ​​beam-column structure, such as Figure 1As shown, the spliced ​​beam-column structure includes a column 1 and a control system, characterized in that a spherical hinge 2 is provided at the top of the column 1, a vertical beam 3 is provided above the spherical hinge 2, a number of horizontal beams 4 are evenly distributed around the spherical hinge 2, and a number of adjustment components 5 are evenly provided on the column 1, and the adjustment components 5 and the horizontal beams 4 are staggered. The column 1 and the horizontal beam 4 are perpendicular to each other, and the column 1 is the main load-bearing and supporting component of the structure. The spherical hinge 2 is located at the top of the column 1, providing a connection point that allows the vertical beam 3 and the horizontal beam 4 to rotate in multiple directions. The vertical beam 3 is a vertical support member, and the horizontal beam 4 is a horizontal support member.

[0032] like Figure 3 and Figure 4 As shown, the adjustment assembly 5 includes a fixed block 51 fixedly mounted on the column 1. The fixed block 51 defines a first slide groove 511, which is inclined upward from the column 1. A central groove 11 is defined within the upper section of the column 1, with a relief groove 512 disposed between the first slide groove 511 and the central groove 11. A sliding shaft 52 is slidably connected to the fixed block 51. A magnetic block 54 is disposed within the central groove 11, and an electromagnetic block 55 is disposed above the central groove 11. The adjustment assembly 5 is used to control the connection between the spherical hinge 2 and the column 1.

[0033] like Figures 3 to 6 As shown, both ends of the sliding shaft 52 are fixedly connected with a first sliding rod 521, and a second sliding rod 522 is slidably connected above each of the first sliding rods 521. Two fixed slide rails 56 are fixedly set on the column 1 above each of the fixed blocks 51. The second slide rod 522 and the fixed slide rail 56 slide together. A connecting rod 53 is commonly connected between the sliding shaft 52 and the magnetic block 54. A connecting block 58 is set between each pair of the second sliding rods 522, and a plug-in fixing pin 59 is set on the inner side of each connecting block 58.

[0034] The electromagnetic block 55 can generate magnetism by energizing it, and is the power source of the adjustment mechanism. It attracts the magnetic block 54 and drives the sliding shaft 52 to slide upward along the first sliding groove 511 and the avoidance groove 512 through the connecting rod 53. Due to the inclined setting of the first sliding groove 511 and the limiting effect of the fixed slide rail 56 on the second sliding rod 522, when the sliding shaft 52 slides upward along the first sliding groove 511 and the avoidance groove 512, the second sliding rod 522 slides outward (i.e., away from the column 1) along the fixed slide rail 56. The second sliding rod 522 drives the connecting block 58 and the plug-in fixing pin 59 to move outward, and the plug-in fixing pin 59 disengages from the through hole 5021 on the column 1 and the plug-in hole on the spherical hinge 2, so that the spherical hinge 2 can drive the vertical beam 3 and the horizontal beam 4 to swing at a certain angle relative to the column 1 under the influence of vibration.

[0035] In certain preferred embodiments, Figure 1 As shown, the lower end of the column 1 is fixedly connected to a support member 8, and the column 1 and the support member 8 are detachably connected. An acceleration sensor 7 is also installed on the support member 8. The acceleration sensor 7 is used to monitor seismic vibration waves in real time and transmit the signal to the control system.

[0036] In certain preferred embodiments, Figure 3 As shown, the top of the column 1 is provided with a mating ball groove 50. Around the mating ball groove 50, there are circular avoidance grooves 501 at positions opposite to the crossbeam 4. The remaining protruding portions around the mating ball groove 50 are claws 502. Each claw 502 is provided with a through hole 5021. The through hole 5021 is adapted to fit the plug-in fixing pin 59. The plug-in fixing pin 59 passes through the through hole 5021 and is plugged into the spherical hinge 2. The spherical hinge 2 is provided with a plug-in hole adapted to fit the plug-in fixing pin 59. The mating ball groove 50 is used to accommodate the spherical hinge 2; the circular avoidance groove 501 is used to provide a swaying space for the crossbeam 4. The claws 502 and the through hole 5021 cooperate with the plug-in fixing pin 59 to achieve locking of the spherical hinge 2 and the column 1.

[0037] In certain preferred embodiments, Figure 2 As shown, each of the latching claws 502 is fixedly connected to a limiting spherical housing 22 above, the inner side of which mates with the outer side of the spherical hinge 2. A rebound mechanism 6 is provided on both sides of each limiting spherical housing 22 and on each of the avoidance circular grooves 501. The limiting spherical housing 22 ensures that the rotation of the spherical hinge 2 remains within a controllable range, while the rebound mechanism 6 acts as a buffer and energy absorption mechanism to prevent collisions that may occur when the crossbeam 4 swings when unlocked.

[0038] like Figure 7 As shown, the rebound mechanism 6 includes an upper rubber layer 61 and a lower rubber layer 62. The inner wall of the upper rubber layer 61 is fixedly connected to a plurality of elastic blocks 63. The inner wall of the lower rubber layer 62 and the lower portion of the elastic block 63 are provided with placement grooves 621. A common spring 64 is provided in each placement groove 621. A positioning shaft 65 is fixedly connected between each elastic block 63 and the common spring 64. A plurality of butterfly springs 66 are sleeved on each positioning shaft 65.

[0039] When the crossbeam 4 collides with the rebound mechanism 6 during its swing, it first strikes the upper rubber layer 61. The elastic block 63 within the upper rubber layer 61 is compressed, squeezing the positioning shaft 65. The butterfly spring 66 on the positioning shaft 65 elastically deforms to absorb some of the energy. Simultaneously, the positioning shaft 65 further presses downward against the common spring 64 within the lower rubber layer 62, absorbing even more energy. Subsequently, the collision force decreases, and the butterfly spring 66 and common spring 64 rebound together, generating a reaction force acting on the crossbeam 4, preventing continued collisions and further dissipating the remaining vibration energy.

[0040] In certain preferred embodiments, Figure 6 As shown, the first slide bar 521 and the second slide bar 522 are both L-shaped, with their transverse sections tightly abutting against each other's longitudinal sections. A second slide groove 5221 is defined on both sides of each second slide bar 522. Stabilizing hooks 5211 are fixedly disposed on both sides above each first slide bar 521. The stabilizing hooks 5211 on the same side engage and slide with the second slide groove 5221. The cooperation between the second slide groove 5221 and the stabilizing hooks 5211 provides accurate sliding guidance and position limiting for the first and second slide bars 521, 522.

[0041] In certain preferred embodiments, Figure 2 As shown, a connecting column 21 is fixedly provided on the spherical hinge 2, and the top of the connecting column 21 is detachably fixedly assembled with the vertical beam 3. The detachable connection mode is convenient for installation and maintenance.

[0042] In certain preferred embodiments, Figure 5 As shown, each of the fixed slide rails 56 is provided with a third slide groove 561 on one side close to the second slide rod 522, and each of the upper ends of the second slide rods 522 is fixedly provided with a slider 57 on one side close to the fixed slide rail 56, and the slider 57 slides in cooperation with the third slide groove 561.

[0043] In some preferred embodiments, the acceleration sensor 7 and the electromagnetic block 55 are both connected to the control system signal.

[0044] In the above embodiment, a seismic resistance method for a spliced ​​beam-column structure is characterized in that, when an earthquake occurs, the acceleration sensor 7 senses the vibration wave and transmits the signal to the control system, and the control system controls the electromagnetic block 55 to be energized to generate magnetism, and the magnetic block 54 is magnetically attracted by the electromagnetic block 55 and moves upward, and the magnetic block 54 drives the sliding shaft 52 to slide upward along the first sliding groove 511 through the connecting rod 53, and the first sliding rods 521 at both ends of the sliding shaft 52 slide relative to the second sliding rods 522, and at the same time, the second sliding rods 522 slide outward relative to the fixed slide rail 56, and then, through the connecting block 58, drive the plug-in fixing pin 59 to slide out of the through hole 5021 on the column 1 and the plug-in hole on the spherical hinge 2, at this time, the spherical hinge 2 can drive the vertical beam 3 and the horizontal beam 4 to swing at a certain angle relative to the column 1 under the influence of vibration, so as to disperse and consume earthquake energy through this swing, and reduce the damage to the beam-column structure caused by the earthquake.

[0045] When the crossbeam 4 collides with the rebound mechanism 6 during the swinging process, it first collides with the upper rubber layer 61. The elastic block 63 in the upper rubber layer 61 is compressed and squeezes the positioning shaft 65 at the same time. The butterfly spring 66 on the positioning shaft 65 undergoes elastic deformation to absorb part of the energy. At the same time, the positioning shaft 65 further squeezes the ordinary spring 64 in the lower rubber layer 62 downward. Subsequently, the butterfly spring 66 and the ordinary spring 64 rebound, giving the crossbeam 4 a force in the opposite direction, causing the crossbeam 4 to rebound, thereby better absorbing and dissipating the vibration energy generated by the earthquake, and further reducing the impact on the structure.

[0046] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0047] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the aforementioned embodiments, or that some of the technical features may be replaced with equivalents. Such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A spliced ​​beam-column structure, comprising a column (1) and a control system, characterized in that: A spherical hinge (2) is provided on the top of the column (1), a vertical beam (3) is provided above the spherical hinge (2), a plurality of cross beams (4) are evenly distributed around the spherical hinge (2), a plurality of adjustment components (5) are evenly provided on the column (1), and the adjustment components (5) and the cross beams (4) are staggered. The adjustment assembly (5) comprises a fixed block (51) fixedly mounted on the column (1), a first sliding groove (511) is provided on the fixed block (51), a central groove (11) is provided inside the upper section of the column (1), a avoiding groove (512) is provided between the first sliding groove (511) and the central groove (11), a sliding shaft (52) is slidably connected to the fixed block (51), a magnetic block (54) is provided in the central groove (11), and an electromagnetic block (55) is provided above the central groove (11); Both ends of the sliding shaft (52) are fixedly connected with a first sliding rod (521), and a second sliding rod (522) is slidably connected above each of the first sliding rods (521). Two fixed slide rails (56) are fixedly provided on the column (1) above each of the fixed blocks (51). The second sliding rod (522) and the fixed slide rails (56) are slidably matched. A connecting rod (53) is commonly connected between the sliding shaft (52) and the magnetic block (54). A connecting block (58) is provided between each pair of the second sliding rods (522), and a plug-in fixing pin (59) is provided on the inner side of each of the connecting blocks (58).

2. The spliced ​​beam-column structure according to claim 1, characterized in that: The lower end of the column (1) is fixedly connected to a support member (8), the column (1) and the support member (8) are detachably connected, and an acceleration sensor (7) is also installed on the support member (8).

3. The spliced ​​beam-column structure according to claim 2, characterized in that: A matching ball groove (50) is provided on the top of the column (1), and avoidance circular grooves (501) are provided around the matching ball groove (50) at positions relative to the crossbeam (4). The remaining protruding parts around the matching ball groove (50) are claws (502), and each of the claws (502) is provided with a through hole (5021), and the through hole (5021) is adapted to the plug-in fixing pin (59), and the plug-in fixing pin (59) passes through the through hole (5021) and is plugged into the spherical hinge (2), and the spherical hinge (2) is provided with a plug-in hole adapted to the plug-in fixing pin (59).

4. The spliced ​​beam-column structure according to claim 3, characterized in that: A limiting spherical shell (22) is fixedly connected to the top of each of the claws (502), the inner side of the limiting spherical shell (22) is in contact with the outer side of the spherical hinge (2), and a rebound mechanism (6) is provided on both sides of each of the limiting spherical shells (22) and each of the avoiding circular grooves (501); The rebound mechanism (6) comprises an upper rubber layer (61) and a lower rubber layer (62); the inner wall of the upper rubber layer (61) is fixedly connected with a plurality of elastic blocks (63); the inner wall of the lower rubber layer (62) and a placement groove (621) are provided directly below the elastic block (63); a common spring (64) is provided in each placement groove (621); a positioning shaft (65) is fixedly connected between each elastic block (63) and the common spring (64); and each positioning shaft (65) is sleeved with a plurality of butterfly springs (66).

5. The spliced ​​beam-column structure according to claim 4, characterized in that: The first slide bar (521) and the second slide bar (522) are both L-shaped, and their transverse sections are tightly abutted against each other's longitudinal sections. A second slide groove (5221) is provided on both sides of each second slide bar (522), and a stabilizing hook block (5211) is fixedly provided on both sides above each first slide bar (521). The stabilizing hook block (5211) on the same side is hooked and slidably matched with the second slide groove (5221).

6. The spliced ​​beam-column structure according to claim 5, characterized in that: A connecting column (21) is fixedly provided on the spherical hinge (2), and the top of the connecting column (21) is detachably fixedly assembled with the vertical beam (3).

7. The spliced ​​beam-column structure according to claim 6, characterized in that: A third slide groove (561) is provided on the side of each fixed slide rail (56) close to the second slide rod (522), and a slider (57) is fixedly provided on the side of the upper end of each second slide rod (522) close to the fixed slide rail (56), and the slider (57) is slidably matched with the third slide groove (561).

8. The spliced ​​beam-column structure according to claim 7, characterized in that: The acceleration sensor (7) and the electromagnetic block (55) are both connected to the control system signal.

9. A seismic resistance method for a spliced ​​beam-column structure according to claims 1-8, characterized in that: When an earthquake occurs, the acceleration sensor (7) senses the vibration wave and transmits the signal to the control system. The control system controls the electromagnetic block (55) to be energized to generate magnetism. The magnetic block (54) is attracted by the magnetism of the electromagnetic block (55) and moves upward. The magnetic block (54) drives the sliding shaft (52) to slide upward along the first sliding groove (511) through the connecting rod (53). The first sliding rods (521) at both ends of the sliding shaft (52) slide relative to the second sliding rod (522). At the same time, the second sliding rod (522) slides outward relative to the fixed slide rail (56). Then, through the connecting block (58), the plug-in fixing pin (59) is driven to slide out of the through hole (5021) on the column (1) and the plug-in hole on the spherical hinge (2). At this time, the spherical hinge (2) can drive the vertical beam (3) and the horizontal beam (4) to swing at a certain angle relative to the column (1) under the influence of vibration.

10. The earthquake-resistant method for a spliced ​​beam-column structure according to claim 9, characterized in that: When the crossbeam (4) collides with the rebound mechanism (6) during the swinging process, it first collides with the upper rubber layer (61), the elastic block (63) in the upper rubber layer (61) is compressed, and at the same time squeezes the positioning shaft (65), the butterfly spring (66) on the positioning shaft (65) undergoes elastic deformation to absorb part of the energy, and at the same time, the positioning shaft (65) further squeezes the ordinary spring (64) in the lower rubber layer (62) downward, and then the butterfly spring (66) and the ordinary spring (64) rebound.

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