CN115405008A - Swing and sliding composite support in integrated structure - Google Patents
Swing and sliding composite support in integrated structure Download PDFInfo
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- CN115405008A CN115405008A CN202211127754.4A CN202211127754A CN115405008A CN 115405008 A CN115405008 A CN 115405008A CN 202211127754 A CN202211127754 A CN 202211127754A CN 115405008 A CN115405008 A CN 115405008A
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- 239000002131 composite material Substances 0.000 title claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 150000001875 compounds Chemical class 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 10
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 230000035939 shock Effects 0.000 abstract description 5
- 238000013016 damping Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/36—Bearings or like supports allowing movement
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0215—Bearing, supporting or connecting constructions specially adapted for such buildings involving active or passive dynamic mass damping systems
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/023—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising rolling elements, e.g. balls, pins
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0237—Structural braces with damping devices
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention relates to a swing and slide composite support in an integrated structure, which comprises an upper support disc, a lower support disc and a middle swing body, and is characterized in that: the middle swinging body consists of an upper support body and a lower support body, a cylindrical upright post is arranged at the center of the lower surface of the upper support body, a cylindrical groove is formed in the center of the upper surface of the lower support body, the depth of the cylindrical groove is equal to the height of the cylindrical upright post at the lower surface of the upper support body, and the diameter of the cylindrical groove is larger than that of the cylindrical upright post; the upper supporting disc and the lower supporting disc are connected by four sets of symmetrically arranged link mechanisms, and the upper supporting disc can swing in any direction relative to the lower supporting disc. The advantages are that: the invention relieves the earthquake acting force from horizontal and inclined inclination by the combined action of swinging and sliding, and can avoid the generation of longitudinal earthquake acting force, thereby fundamentally preventing the damage of the longitudinal acting force and having obvious shock absorption effect.
Description
Technical Field
The invention relates to a swing and slide composite support in an integrated structure, belonging to the technical field of quakeproof and earthquake-proof devices of buildings.
Background
The shock insulation and absorption technology is a new method in the aspect of earthquake resistance which is commonly accepted by the building industry and earthquake departments, has very obvious effect of resisting earthquake damage (theoretical analysis considers that earthquake damage can be reduced by one intensity level), and has relatively early exploration practice activities developed in this aspect abroad, thereby obtaining a plurality of successful experiences. The future application of seismic mitigation and isolation technology is a necessary trend in the building industry and bridge structures.
The structure principle of the seismic isolation and reduction products is divided into two types, which are respectively: pendulum damping structure, friction slippage structure. At present, no matter which kind of products are widely used, because the products have certain limitation, the special requirements of omnibearing shock absorption, especially weak functions for relieving longitudinal earthquake acting force and cost problems are not realized.
The design concept of the friction pendulum type support is proposed by Americans in the late eighties of the last century, and the basic structure of the pendulum type support formed according to the concept is that a football-shaped swinging body is clamped in two upper and lower concave arc surfaces (see figure 1). The structure has good damping effect; the advantages of obvious restoration function after earthquake and the like are paid attention by people in the industry, but the three structural bodies inevitably bring another defect due to the separated state, and effective defense measures are difficult to establish for the damage of longitudinal acting force, so that professionals in various countries seek various solutions.
Disclosure of Invention
The invention aims to provide a swing and slide composite support in an integrated structure, which adopts two-stage damping measures, can relieve horizontal and oblique earthquake acting forces through the combined action of swing and slide, can avoid the damage of longitudinal earthquake acting forces, and has obvious damping effect.
The object of the invention is achieved in the following way:
the invention comprises an upper supporting disk, a lower supporting disk and a middle swinging body, and is characterized in that: the middle swinging body consists of an upper support body and a lower support body, the upper support disc is a disc with a plane upper surface and an inward concave circular arc surface or an outward convex circular arc surface lower surface, the lower support disc is a disc with an inward concave circular arc surface upper surface and a plane lower surface, the upper surface of the upper support body of the middle swinging body is an outward convex circular arc surface or an inward concave circular arc surface which can be matched with the lower surface of the upper support disc, the lower surface is a plane with a circular outer contour, a cylindrical upright column is arranged at the center of the lower surface of the upper support body, the upper surface of the lower support body is a plane with a circular outer contour, the lower surface is an outward convex circular arc surface which can be matched with the upper surface of the lower support disc, a cylindrical groove is arranged at the center of the upper surface of the lower support body, the depth of the cylindrical groove is equal to the height of the cylindrical upright column at the lower surface of the upper support body, and the diameter of the cylindrical groove is larger than the diameter of the cylindrical upright column; the upper supporting disk and the lower supporting disk are connected by four sets of symmetrically arranged link mechanisms, and the upper supporting disk can swing in any direction relative to the lower supporting disk.
The upper support body of the middle swinging body is arranged on the lower support body, the cylindrical upright post of the upper support body is inserted into the cylindrical groove of the lower support body, and the lower surface of the upper support body is attached to the upper surface of the lower support body.
The middle swinging body is arranged on the lower supporting disc, and the lower surface of the lower support body of the middle swinging body is attached to the upper surface of the lower supporting disc; the upper supporting disc is arranged on the middle swinging body, and the lower surface of the upper supporting disc is attached to the upper surface of the upper supporting body of the middle swinging body.
The periphery of the outer ring of the upper supporting disk is equally provided with four hinge connecting seats, the periphery of the outer ring of the lower supporting disk is correspondingly provided with four connecting lugs with horizontal arc-shaped sliding grooves, and a set of link mechanism is connected between each hinge connecting seat and the corresponding connecting lug.
The connecting rod mechanism comprises a cross rod and a longitudinal rod, one end of the cross rod is connected with a hinge connecting piece, and the hinge connecting piece is hinged with a hinge connecting seat through a longitudinal shaft; the universal joint is sleeved on the cross rod, the upper end of the longitudinal rod is connected with the universal joint, the upper end of the universal joint is hinged with the lower end of the sleeve connecting piece through the cross shaft, the rod body of the longitudinal rod penetrates through the arc-shaped sliding groove of the connecting lug, the universal joint is positioned above the connecting lug, the universal joint above the connecting lug is sleeved with a spring, the longitudinal rod body below the connecting lug is also sleeved with a spring, and the lower end of the longitudinal rod is fastened through a nut.
And a support rod is arranged at the lower part of the connecting lug.
The invention has the advantages that:
(1) The important requirement of support integration is realized, and the structural characteristic avoids the worry that longitudinal acting force can be generated in an extremely-vibrating region and a near-vibrating region;
(2) Because the connecting rod mechanism adopts a flexible connection mode and a separation structure presented by the middle swinging body, the two shock absorption functions of sliding and swinging can be combined into a whole for comprehensive application, the characteristics of various variability of seismic waves in the whole fluctuation process are better adapted, and the special requirements of small damping at the beginning of the support and large damping in the process are realized;
3, the design that the cambered surface structure between the upper support disc and the lower support disc of the support corresponds to the cambered surface structure of the middle swinging body ensures that the support can still return to the original position after reciprocating swinging, and has the function of resetting after the earthquake which is required by an ideal support.
In a word, the invention relieves the earthquake acting force from horizontal and inclined inclination through the combined action of swinging and sliding, and simultaneously can avoid the generation of longitudinal earthquake acting force, thereby fundamentally preventing the damage of the longitudinal acting force and having obvious shock absorption effect.
Drawings
FIG. 1 is a schematic structural view of a conventional friction pendulum mount;
FIG. 2 is a schematic structural view of the upper support plate of the present invention with a convex arc lower surface;
FIG. 3 is a schematic structural view of the upper supporting plate of the present invention, wherein the lower surface of the upper supporting plate is a concave arc surface;
FIG. 4 is a top view of FIG. 2;
FIG. 5 is a graph showing hysteresis curves experimentally measured for the damping performance of the present invention.
In the figure: 1-upper supporting plate, 2-upper supporting body, 3-lower supporting body, 4-cylindrical groove, 5-cylindrical column, 6-lower supporting plate, 7-longitudinal rod, 8-nut, 9-longitudinal rod spring, 10-connecting lug, 11-spring, 12-universal joint, 13-sleeve connecting piece, 14-transverse rod, 15-hinge connecting piece, 16-hinge connecting seat, 17-supporting rod and 18-horizontal arc chute.
Detailed Description
Example 1:
referring to the attached figures 2 and 4, the invention comprises an upper supporting disc 1, a lower supporting disc 6 and a middle swinging body, wherein the middle swinging body consists of an upper supporting body 2 and a lower supporting body 3, the upper supporting disc is a disc with a plane upper surface and a convex arc lower surface, the lower supporting disc is a disc with a concave arc upper surface and a plane lower surface, the upper surface of the upper supporting body of the middle swinging body is a concave arc surface which can be matched with the lower surface of the upper supporting disc, the lower surface of the upper supporting body is a plane with a circular outer contour, the lower surface of the upper supporting body is a convex arc surface which can be matched with the upper surface of the lower supporting disc, a cylindrical groove 4 is formed in the center of the upper surface of the lower supporting body, the depth of the cylindrical groove is equal to the height of the cylindrical column on the lower surface of the upper supporting body, and the diameter of the cylindrical groove is larger than the diameter of the cylindrical column; the upper support body of the middle swinging body is arranged on the lower support body, the cylindrical upright post of the upper support body is inserted into the cylindrical groove of the lower support body, and the lower surface of the upper support body is attached to the upper surface of the lower support body. The middle swinging body is arranged on the lower supporting disk, and the lower surface of the lower support body of the middle swinging body is attached to the upper surface of the lower supporting disk; the upper supporting disc is arranged on the middle swinging body, and the lower surface of the upper supporting disc is attached to the upper surface of the upper supporting body of the middle swinging body.
The upper supporting disc and the lower supporting disc are connected by four sets of symmetrically arranged link mechanisms, and the upper supporting disc can swing in any direction relative to the lower supporting disc. Specifically, the method comprises the following steps: four hinge connecting seats 15 are equally arranged on the circumference of the outer ring of the upper supporting disk, four connecting lugs 10 with horizontal arc-shaped sliding grooves 18 are correspondingly arranged on the circumference of the outer ring of the lower supporting disk, and a set of link mechanism is connected between each hinge connecting seat and the corresponding connecting lug. The connecting rod mechanism comprises a cross rod 14 and a longitudinal rod 7, one end of the cross rod is fixedly connected with a hinge connecting piece 15, and the hinge connecting piece is hinged with the hinge connecting base through a longitudinal shaft; the telescopic connection piece 13 is sleeved on the cross rod, the upper end of the longitudinal rod is connected with the universal joint 12, the upper end of the universal joint is hinged with the lower end of the telescopic connection piece through the cross shaft, the longitudinal rod body penetrates through the arc-shaped sliding groove 18 of the connecting lug, the universal joint above the connecting lug is sleeved with the spring, the longitudinal rod body below the connecting lug is also sleeved with the spring 11, the longitudinal rod body below the connecting lug is sleeved with the longitudinal rod spring 9, the lower end of the longitudinal rod is fastened through the nut 8, the supporting rod 17 is arranged on the lower portion of the connecting lug, and the lower end of the supporting rod can be supported on a platform for arranging the lower supporting plate to guarantee the stability of the connecting lug.
Example 2: referring to the attached figure 3, the invention comprises an upper supporting disc 1, a lower supporting disc 6 and a middle swinging body, wherein the middle swinging body consists of an upper supporting body 2 and a lower supporting body 3, the upper supporting disc is a disc with a plane upper surface and a concave circular arc lower surface, the lower supporting disc is a disc with a concave circular arc upper surface and a plane lower surface, the upper surface of the upper supporting body of the middle swinging body is a convex circular arc surface which can be matched with the lower surface of the upper supporting disc, and the lower surface of the upper supporting body of the middle swinging body is a plane with a circular outer contour; the rest of the structure is the same as that of example 1.
The damping principle of the invention is as follows:
the four-set link mechanism of the invention embodies the integrated function and the tensile and poking capabilities thereof, and the link mechanism is a set of vertical frame which is formed by connecting two sets of transverse and longitudinal structures through a sleeve. The connection of the connecting rod mechanism with the upper and lower supporting discs respectively adopts a fixed connection mode and a movable connection mode, namely the connecting rod mechanism is fixedly connected with the upper supporting disc; the connection with the lower supporting disc adopts movable connection. The upper end is connected with a transverse rotating rod which can rotate freely by 180 degrees; the four connecting lugs extending out of the lower supporting disk at the lower end are connected with the vertical longitudinal rod inserted into the four connecting lugs. In order to ensure that the longitudinal rod can be freely guided in 360 degrees, the longitudinal rod is connected with a universal joint 12. In order to ensure the upright of the longitudinal rod, a spring 11 playing a stabilizing role is specially sleeved outside the longitudinal rod, and meanwhile, in order to ensure that the connecting rod mechanism has stronger tensile and pulling capacity, the longitudinal rod is sleeved with a longitudinal rod spring 9 with higher hardness at the lower end of the connecting lug, and the inclination angle of the upper supporting plate is determined by the compression amount of the spring 11 in practical application.
The characteristic of the seismic wave is that the seismic wave is impacted under the action of an intermittent wave state instead of continuous coherent action, and the inertia effect is obvious. According to the characteristic, the support is designed into a structure as shown in figures 2, 3 and 4, so that the movement mode of the support is consistent with the earthquake fluctuation mode as much as possible, and the aim of damping can be effectively achieved only by avoiding hard contact between the support and the earthquake fluctuation mode and avoiding the building body from passively receiving earthquake energy to the maximum extent.
When earthquake waves come into the ground (the inclined effect, the inclination angle is different along the magnitude of the earthquake centre distance), because the contact resistance of the two cambered surfaces between the middle swinging body and the upper and lower support discs is larger, and the butt joint surface of the upper and lower support bodies of the middle swinging body is in plane contact, the damping is smaller, therefore, the earthquake waves firstly drive the lower support disc and the lower support body of the middle swinging body to slide along the plane. When the cylindrical upright post of the upper support body is in quick contact with the edge of the cylindrical groove of the lower support body, the distance between the upper support plate and the lower support plate of the support is in a non-parallel shape with one large end and one small end, meanwhile, the earthquake acting force received by the support is converged at the other end of the middle swinging body, the earthquake acting force at the position can be decomposed into component forces acting upwards and horizontally, the horizontal component force is decomposed due to the sliding action, only the component force acting upwards is dissolved, the upper support body can rotate towards the left side under the action of the component force, the lower support body has certain displacement, and when the lower support body is separated from the arc center position of the upper surface of the lower support plate, the lower surface of the lower support body and the arc surface of the upper surface of the lower support plate are necessarily subjected to reverse sliding swinging under the action of gravity, and the swinging result is that the arc surface of the lower surface of the upper support plate and the arc surface of the upper support body are necessarily swung in a linkage manner. Therefore, the effect of sliding and driving double swinging is formed, the sliding, swinging and gravity action and the earthquake action force are synchronously carried out in the whole linkage process, the comprehensive action of mutual influence is carried out in the transient period, the earthquake force does not act independently, and therefore the direct contact condition between the earthquake action force and the upper supporting disc can not be formed, and the earthquake fluctuation energy can be effectively decomposed.
Experimental verification of the damping performance of the invention:
referring to fig. 5, fig. 5 is a press-shear test performed on the intermediate oscillating body in the structure of the present invention, and it is confirmed by the test that the intermediate oscillating body structure of the present invention has a desirable damping effect, in which a hysteresis curve detected in the case of a displacement of plus or minus 10cm is performed under a pressure of 100 tons.
Claims (6)
1. The utility model provides a swing among the integrated structure, compound support slides, includes support disc, lower supporting disk, middle oscillating body, characterized by: the middle swinging body consists of an upper support body and a lower support body, the upper support disc is a disc with a plane upper surface and an inward concave circular arc surface or an outward convex circular arc surface lower surface, the lower support disc is a disc with an inward concave circular arc surface upper surface and a plane lower surface, the upper surface of the upper support body of the middle swinging body is an outward convex circular arc surface or an inward concave circular arc surface which can be matched with the lower surface of the upper support disc, the lower surface is a plane with a circular outer contour, a cylindrical upright column is arranged at the center of the lower surface of the upper support body, the upper surface of the lower support body is a plane with a circular outer contour, the lower surface is an outward convex circular arc surface which can be matched with the upper surface of the lower support disc, a cylindrical groove is arranged at the center of the upper surface of the lower support body, the depth of the cylindrical groove is equal to the height of the cylindrical upright column at the lower surface of the upper support body, and the diameter of the cylindrical groove is larger than the diameter of the cylindrical upright column; the upper supporting disc and the lower supporting disc are connected by four sets of symmetrically arranged link mechanisms, and the upper supporting disc can swing in any direction relative to the lower supporting disc.
2. The composite oscillating-sliding mount in an integrated structure as claimed in claim 1, wherein: the upper support body of the middle swinging body is arranged on the lower support body, the cylindrical upright post of the upper support body is inserted into the cylindrical groove of the lower support body, and the lower surface of the upper support body is attached to the upper surface of the lower support body.
3. The composite oscillating-sliding mount in an integrated structure as claimed in claim 1, wherein: the middle swinging body is arranged on the lower supporting disk, and the lower surface of the lower support body of the middle swinging body is attached to the upper surface of the lower supporting disk; the upper supporting disc is arranged on the middle swinging body, and the lower surface of the upper supporting disc is attached to the upper surface of the upper supporting body of the middle swinging body.
4. The composite oscillating-sliding mount in an integrated structure as claimed in claim 1, wherein: the periphery of the outer ring of the upper supporting disk is equally provided with four hinge connecting seats, the periphery of the outer ring of the lower supporting disk is correspondingly provided with four connecting lugs with horizontal arc-shaped sliding grooves, and a set of link mechanism is connected between each hinge connecting seat and the corresponding connecting lug.
5. The composite oscillating-sliding mount of claim 4 wherein: the connecting rod mechanism comprises a cross rod and a longitudinal rod, one end of the cross rod is connected with a hinge connecting piece, and the hinge connecting piece is hinged with a hinge connecting seat through a longitudinal shaft; the universal joint is sleeved on the cross rod, the upper end of the longitudinal rod is connected with the universal joint, the upper end of the universal joint is hinged with the lower end of the sleeve connecting piece through the cross shaft, the rod body of the longitudinal rod penetrates through the arc-shaped sliding groove of the connecting lug, the universal joint is positioned above the connecting lug, the universal joint above the connecting lug is sleeved with a spring, the longitudinal rod body below the connecting lug is also sleeved with a spring, and the lower end of the longitudinal rod is fastened through a nut.
6. The composite oscillating-sliding bearing in integral structure as defined in claim 5, wherein: and a support rod is arranged at the lower part of the connecting lug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211127754.4A CN115405008B (en) | 2022-09-16 | 2022-09-16 | Swing and sliding composite support in integrated structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211127754.4A CN115405008B (en) | 2022-09-16 | 2022-09-16 | Swing and sliding composite support in integrated structure |
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| CN115405008A true CN115405008A (en) | 2022-11-29 |
| CN115405008B CN115405008B (en) | 2024-02-13 |
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