Shock-absorbing energy-absorbing steel support

Abstract

The present invention provides a shock-absorbing and energy-absorbing steel support, comprising a box, an intermediate body, an elastic component, a damping component and a support plate; wherein the intermediate body is connected to the support plate at one end and slidably connected to the box at the other end, and the intermediate body and the box can slide relative to each other along a first direction; the box has two accommodating cavities arranged on opposite sides of the intermediate body along the first direction; the elastic component comprises two elastic members respectively located in the two accommodating cavities, one end of the elastic member is connected to the intermediate body, and the other end can abut against the cavity wall of the accommodating cavity when the intermediate body and the box slide relative to each other to a first set distance; the damping component comprises two damping members respectively arranged on opposite sides of the intermediate body along the second direction, and the two ends of the damping member are respectively connected to the box and the support plate and used to limit the relative movement of the box and the support plate in the first direction. The present invention solves the problem that traditional steel supports cannot have both horizontal stiffness and shock-absorbing and energy-absorbing performance.

Description

Technical Field

[0001] The invention relates to the technical field of structural shock absorption, and in particular to a shock-absorbing and energy-absorbing steel support. Background Art

[0002] Structural shock absorption and energy dissipation technology is a rapidly developing earthquake protection technology. The concept of shock absorption and energy dissipation was proposed as early as the beginning of the 20th century, but it was not until the 1920s that it was tried in engineering. In the past 20 years, modern shock absorption and energy dissipation technology has been widely used in civil engineering. Shock absorption and energy dissipation structures have been recognized by the earthquake engineering community for their excellent shock absorption effect, safety, durability, economy and applicability. At present, shock absorption and energy dissipation technology has become relatively mature and has become a very important structural control technology. Buildings and bridges built with shock absorption and energy dissipation technology have withstood the test of many actual earthquakes, providing a lot of successful experience for this.

[0003] Since the lead core pollution problem of lead core bearings has not been solved, high damping rubber shock absorption technology has emerged to solve the various shortcomings of lead core bearings. The difference between high damping rubber shock absorption bearings and general rubber bearings lies mainly in the rubber material level. High damping rubber materials are natural rubber and synthetic rubber polymers mixed with vulcanizers, reinforcing agents and plasticizers, so that they have strong horizontal and vertical bearing performance and high damping performance. However, the existing high damping rubber bearings have poor shock absorption and energy dissipation performance.

[0004] The forms of modern civil engineering structures are becoming more and more complex. Building structures are developing towards high-rise, high-strength and large-span. At the same time, after an earthquake, the structure often has large residual displacement, which makes it difficult for the structure to recover quickly after an earthquake. If the residual displacement is too large, the cost of repairing the structure may even exceed the cost of its reconstruction. The existing shock-absorbing and energy-absorbing steel bearings, whose energy-absorbing systems can be a variety of traditional damping components, such as metal dampers, high-damping materials, etc., have the problem of low horizontal stiffness. Summary of the invention

[0005] The purpose of the present invention is to provide a shock-absorbing and energy-absorbing steel support, which solves the problem that the existing steel support cannot have both horizontal stiffness and shock-absorbing and energy-absorbing performance.

[0006] In order to achieve the above-mentioned object, the present invention provides a shock-absorbing and energy-absorbing steel support, including a box body, an intermediate body, an elastic component, a damping component and a support plate; wherein,

[0007] The intermediate body has one end connected to the support plate and the other end extending into the box body and slidably connected to the box body, and the intermediate body and the box body can slide relative to each other along a first direction;

[0008] The box body has two accommodating cavities arranged on opposite sides of the middle body along the first direction;

[0009] The elastic component comprises two elastic members respectively located in the two accommodating cavities, one end of the elastic member is connected to the middle body, and the other end extends horizontally along the first direction and can abut against the cavity wall of the accommodating cavity when the middle body and the box body slide relative to each other to a first set distance;

[0010] The damping assembly includes two damping members respectively arranged on opposite sides of the middle body along the second direction, and the two ends of the damping members are respectively connected to the box body and the support plate and are used to limit the relative movement of the box body and the support plate in the first direction, and the second direction is perpendicular to the first direction.

[0011] Optionally, the box body and the intermediate body are slidably connected via a first sliding assembly, the first sliding assembly comprises a first planar slide and a second planar slide that are slidably connected, the first planar slide is fixedly connected to the box body, and the second planar slide is fixedly connected to the intermediate body.

[0012] Optionally, a plurality of oil storage tanks for storing lubricating oil are arranged on the sliding surface of the first planar slide plate and / or the second planar slide plate.

[0013] Optionally, the intermediate body and the support plate are rotatably connected, and the intermediate body and the support plate can rotate relative to each other in a vertical plane.

[0014] Optionally, the intermediate body is connected to the support plate via a rotating assembly, which includes a spherical skateboard and an intermediate spherical crown plate, the upper surface of the spherical skateboard is fitted with and fixedly connected to the lower surface of the intermediate body, the lower surface of the spherical skateboard is fitted with and slidably connected to the upper surface of the intermediate spherical crown plate, and the lower surface of the intermediate spherical crown plate is slidably connected to the upper surface of the support plate.

[0015] Optionally, the intermediate ball crown plate and the support plate are slidably connected via a second sliding assembly, the second sliding assembly comprising a slidably connected third plane slide plate and a fourth plane slide plate, the third plane slide plate is fixedly connected to the lower surface of the intermediate ball crown plate, and the fourth plane slide plate is fixedly connected to the upper surface of the support plate.

[0016] Optionally, an oil storage tank for storing lubricating oil is provided on the sliding surface of the third planar slide plate and / or the fourth planar slide plate.

[0017] Optionally, a rotation groove is provided on the upper surface of the support plate, the intermediate spherical crown plate is located in the rotation groove, one end of the intermediate body extends into the rotation groove and is slidably connected to the intermediate spherical crown plate through the spherical slide plate, and the edge of the one end of the intermediate body has a protrusion, and there is a preset distance between the protrusion and the groove wall of the rotation groove, and the protrusion can abut against the groove wall of the rotation groove when the intermediate body slides relative to the support plate to a second set distance.

[0018] Optionally, the elastic member is a leaf spring, a threaded hole is provided at the center of the leaf spring along the first direction, and a fastener penetrates through the threaded hole and is threadedly connected to the central body.

[0019] Optionally, a receiving hole is provided on the cavity wall of the receiving cavity, and when the leaf spring abuts against the cavity wall of the receiving cavity, one end of the fastener facing away from the middle body extends into the receiving hole.

[0020] The present invention provides a shock-absorbing and energy-absorbing steel support, which has at least one of the following beneficial effects:

[0021] 1) By arranging the elastic member in the first direction (radial direction), the horizontal stiffness can be improved without affecting the movement of the steel support in the first direction in the horizontal plane, thereby solving the problem of low horizontal stiffness of the existing steel support;

[0022] 2) By arranging a damping member in the second direction (annular direction), the damping of the steel support in the first direction can be increased, thereby improving the shock absorption and energy dissipation performance of the steel support. While ensuring the safety of the horizontal bearing capacity of the steel support, it can also improve its shock absorption and energy dissipation effect on the upper structure, thus solving the problem of poor shock absorption and energy dissipation performance of traditional steel supports;

[0023] 3) The entire steel support structure is compact, safe, reliable and low-cost, suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Those skilled in the art will appreciate that the accompanying drawings are provided for a better understanding of the present invention and do not constitute any limitation on the scope of the present invention.

[0025] Figure 1 A front cross-sectional view of a shock-absorbing and energy-absorbing steel support provided in one embodiment of the present invention;

[0026] Figure 2 A side cross-sectional view of a shock-absorbing and energy-absorbing steel support provided in one embodiment of the present invention;

[0027] Figure 3 A top cross-sectional view of a shock-absorbing and energy-absorbing steel support provided in one embodiment of the present invention.

[0028] In the attached figure:

[0029] 1-box; 2-middle main body; 3-support plate; 4-accommodating chamber; 5-elastic member; 6-damping member; 7-first sliding assembly; 8-fastener; 9-accommodating hole; 10-spherical slide plate; 11-middle spherical crown plate; 12-second sliding assembly; 13-protrusion. DETAILED DESCRIPTION

[0030] In order to make the purpose, advantages and features of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and are not drawn to scale, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In addition, the structure shown in the drawings is often a part of the actual structure. In particular, the emphasis of each drawing is different, and sometimes different scales are used.

[0031] The singular terms "one", "an" and "the" used in the present invention may include plural objects, unless the content clearly indicates otherwise. The term "or" used in the present invention is usually used to include the meaning of "and / or", unless the content clearly indicates otherwise. The term "several" used in the present invention is usually used to include the meaning of "at least one", unless the content clearly indicates otherwise. The term "at least two" used in the present invention is usually used to include the meaning of "two or more", unless the content clearly indicates otherwise. In addition, the terms "first", "second" and "third" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" and "third" may explicitly or implicitly include one or at least two of the features.

[0032] Figure 1 A front cross-sectional view of a shock-absorbing and energy-absorbing steel support provided in one embodiment of the present invention; Figure 2 A side cross-sectional view of a shock-absorbing and energy-absorbing steel support provided in one embodiment of the present invention; Figure 3 This is a top view of a section of a shock-absorbing and energy-absorbing steel support provided by an embodiment of the present invention. Figure 1-Figure 3 This embodiment provides a shock-absorbing and energy-absorbing steel support, including a box body 1, an intermediate body 2, an elastic component, a damping component and a support plate 3; wherein,

[0033] The intermediate body 2 has one end connected to the support plate 3, and the other end extends into the box body 1 and is slidably connected to the box body 1, and the intermediate body 2 and the box body 1 can slide relative to each other along a first direction;

[0034] The box body 1 has two accommodating chambers 4 arranged on opposite sides of the middle body 2 along the first direction;

[0035] The elastic component comprises two elastic members 5 respectively located in the two accommodating chambers 4, one end of the elastic member 5 is connected to the middle body 2, and the other end extends horizontally along the first direction and can abut against the cavity wall of the accommodating chamber 4 when the middle body 2 and the box body 1 slide relative to each other to a first set distance;

[0036] The damping assembly includes two damping members 6 respectively arranged on opposite sides of the middle body 2 along the second direction, and the two ends of the damping member 6 are respectively connected to the box body 1 and the support plate 3 and are used to limit the relative movement of the box body 1 and the support plate 3 in the first direction, and the second direction is perpendicular to the first direction.

[0037] The shock-absorbing and energy-absorbing steel bearing provided in this embodiment can be used as a damping ball joint bearing at the connection between the aluminum alloy roof and the steel structure roof. Specifically, the box body 1 is equivalent to the upper bearing plate of the traditional damping steel bearing, which is mainly used to connect with the upper structure of the roof structure, and the bearing plate 3 is equivalent to the lower bearing plate of the traditional damping steel bearing, which is used to connect with the lower structure of the roof structure and serves as the lower supporting structure of the entire steel bearing, providing the steel bearing with vertical bearing capacity, radial horizontal stiffness and horizontal radial shear force.

[0038] In this embodiment, the cross section of the box body 1 is rectangular, the cross section of the support plate 3 is square, and the length and width of the cross section of the box body 1 are not equal and are slightly larger than the side length of the support plate 3. The material of the box body 1 and the support plate 3 can be steel, for example, the box body 1 is made of Q355B material, and the support plate 3 is made of ZG340-550H. The upper surface of the box body 1 can be connected to the upper structure by welding, and the lower surface of the support plate 3 can be connected to the lower structure by welding.

[0039] The intermediate body 2 is the main structure of the steel support, one end of which is connected to the support plate 3, and the other end extends into the box body 1 and is slidably connected to the box body 1. The intermediate body 2 is used to provide the steel support with vertical bearing capacity and radial horizontal rigidity. In this embodiment, the intermediate body 2 is cylindrical and can be made of ZG340-550H material.

[0040] The first direction mentioned here may be, for example, the radial direction of the roof structure. When the upper structure of the roof structure moves radially relative to the lower structure after being subjected to an external force, the upper structure drives the box body 1 to slide radially relative to the middle body 2.

[0041] Furthermore, the box body 1 and the intermediate body 2 are slidably connected via a first sliding assembly 7, wherein the first sliding assembly 7 comprises a first planar slide plate and a second planar slide plate that are slidably connected, wherein the first planar slide plate is fixedly connected to the box body 1, and the second planar slide plate is fixedly connected to the intermediate body 2. The first sliding assembly 7 is used to reduce the sliding friction between the box body 1 and the intermediate body 2.

[0042] In this embodiment, the first planar slide plate is, for example, a stainless steel plate, the upper surface of which can be connected to the box body 1 by welding or the like, and the lower surface is relatively smooth. The second planar slide plate can be made of MHP (modified polytetrafluoroethylene plate) material.

[0043] Furthermore, a plurality of oil storage tanks for storing lubricating oil are arranged on the sliding surface of the first plane slide and / or the second plane slide to further reduce the sliding friction between the box body 1 and the intermediate body 2. The sliding surface refers to the lower surface of the first plane slide in contact with the second plane slide and the upper surface of the second plane slide in contact with the first plane slide, that is, the oil storage tank can be arranged only on the lower surface of the first plane slide, or only on the upper surface of the second plane slide, or on the lower surface of the first plane slide and the upper surface of the second plane slide at the same time. In this embodiment, since the second plane slide is made of MHP material, the oil storage tank can be directly formed on the upper surface of the second plane slide by injection molding, which is simple and convenient to process. The present application does not impose any restrictions on the shape, quantity and distribution of the oil storage tank.

[0044] In this embodiment, the shape and size of the first planar slide plate may be the same as or different from the shape and size of the second planar slide plate, and this application does not impose any limitation on this.

[0045] In this embodiment, the lubricating oil is, for example, 5201-2 silicone grease lubricating oil.

[0046] Please continue to refer to Figure 1 The elastic component includes two elastic members 5 respectively located in the two accommodating chambers 4, one end of the elastic member 5 is connected to the middle body 2, and the other end extends horizontally along the first direction and can abut against the cavity wall of the accommodating chamber 4 when the middle body 2 and the box body 1 slide relative to each other to a first set distance. The function of the elastic member 5 is to limit the relative sliding between the box body 1 and the middle body 2, so as to improve the horizontal stiffness without affecting the radial movement of the steel support, thereby solving the problem of low horizontal stiffness of the traditional steel support. For example, Figure 1For example, when the box body 1 slides to the left for a first set distance relative to the middle body 2, the elastic member 5 located on the right side of the middle body 2 will abut against the right cavity wall of the accommodating cavity 4 on the right side of the box body 1. As the box body 1 continues to slide relative to the middle body 2, the elastic member 5 will be squeezed, providing a certain buffering force while limiting the position. Similarly, when the box body 1 slides to the right for a first set distance relative to the middle body 2, the elastic member 5 located on the left side of the middle body 2 will abut against the left cavity wall of the accommodating cavity 4 on the left side of the box body 1.

[0047] Preferably, the elastic member 5 is a leaf spring, the center of which is provided with a threaded hole along the first direction, and a fastener 8 penetrates the threaded hole and is threadedly connected to the central body. The leaf spring has a simple structure, reliable operation, and a certain friction and shock-absorbing effect, and is a better choice. In this embodiment, the leaf spring is composed of no less than two sheets of spring steel stacked together, and is threadedly connected to the intermediate body 2 through the fastener 8, which greatly improves the horizontal stiffness and horizontal shear force of the steel support, and is convenient for disassembly, assembly and replacement. Of course, in addition to the leaf spring, the elastic member 5 can also be selected from springs of other shapes, such as a coil spring, and the present application does not impose any restrictions on this.

[0048] Preferably, an accommodating hole 9 is provided on the cavity wall of the accommodating cavity 4, and when the leaf spring abuts against the cavity wall of the accommodating cavity 4, the end of the fastener 8 away from the middle body 5 extends into the accommodating hole 9 to avoid contact and collision between the fastener 8 and the cavity wall of the accommodating cavity 4 and cause damage.

[0049] Please continue to refer to Figure 1 The damping assembly includes two damping members 6 respectively arranged on opposite sides of the middle body 2 along the second direction, and the two ends of the damping member 6 are respectively connected to the box body 1 and the support plate 3 and are used to limit the relative movement of the box body 1 and the support plate 3 in the first direction, and the second direction is perpendicular to the first direction.

[0050] The first direction and the second direction are both directions on the horizontal plane. The second direction mentioned here can be, for example, the circumferential direction of the roof structure. When the upper structure of the roof structure is subjected to an external force in the radial direction (such as an earthquake), the damping member 6 provides a large amount of damping to limit the relative movement of the box body 1 and the support plate 3 in the first direction, solving the problem of poor energy dissipation performance of traditional steel supports and improving its shock absorption and energy dissipation performance. While ensuring the safety of the horizontal bearing capacity of the steel support, it can also improve the shock absorption and energy dissipation effect of the steel support on the upper structure. It should be understood that the steel support provided in this application is completely stuck and cannot slide in the second direction, and the elastic member 5 and the damping member 6 both act under sliding in the first direction.

[0051] In this embodiment, the damping member 6 is made of damping materials such as rubber or lead rods. Connecting steel plates are provided at both ends of the damping member, and the connecting steel plates can be connected to the box body 1 and the support plate 3 by welding or other methods, and this application does not limit this.

[0052] Preferably, the intermediate body 2 and the support plate 3 are rotatably connected, and the intermediate body 2 and the support plate 3 can rotate relative to each other in a vertical plane, so as to achieve fine adjustment of a certain angle.

[0053] Please continue to refer to Figure 1-Figure 2 The intermediate body 2 is connected to the support plate 3 via a rotating assembly, and the rotating assembly includes a spherical slide 10 and an intermediate spherical crown plate 11. The upper surface of the spherical slide 10 fits and is fixedly connected to the lower surface of the intermediate body 2, the lower surface of the spherical slide 10 fits and is slidably connected to the upper surface of the intermediate spherical crown plate 11, and the lower surface of the intermediate spherical crown plate 11 is slidably connected to the upper surface of the support plate 3. Since the contact surface between the spherical slide 10 and the intermediate spherical crown plate 11 is an arc spherical surface, similar to the structure of a universal ball, the intermediate body 2 can achieve a certain degree of rotation in a vertical plane, and has better applicability.

[0054] In this embodiment, the lower surface of the intermediate body 2 also has a groove matching the shape of the upper surface of the spherical slide plate 10 for fixing and installing the spherical slide plate 10. The upper half of the spherical slide plate 10 can be clamped in the groove by bonding or other means. At the same time, the lower half of the spherical slide plate 10 is exposed from the groove and is in sliding contact with the intermediate spherical crown plate 11, providing a rotation function for the steel support. In addition, the lower surface of the intermediate spherical crown plate 11 is slidably connected to the upper surface of the support plate 3 to ensure the relative position of the intermediate body 2 and the intermediate spherical crown plate 11, and improve the force of the intermediate spherical crown plate 11.

[0055] Furthermore, the intermediate ball crown plate 11 is slidably connected to the support plate 3 via a second sliding component 12, and the second sliding component 12 includes a third plane slide plate and a fourth plane slide plate that are slidably connected, the third plane slide plate is fixedly connected to the lower surface of the intermediate ball crown plate 11, and the fourth plane slide plate is fixedly connected to the upper surface of the support plate 3.

[0056] In this embodiment, the third planar slide plate is made of MHP material, and the fourth planar slide plate is, for example, a stainless steel plate, whose lower surface can be connected to the support plate 3 by welding or the like, and whose upper surface is relatively smooth and contacts the lower surface of the third planar slide plate.

[0057] Furthermore, an oil storage tank for storing lubricating oil is provided on the sliding surface of the third plane slide and / or the fourth plane slide. The sliding surface refers to the lower surface of the third plane slide in contact with the fourth plane slide and the upper surface of the fourth plane slide in contact with the third plane slide, that is, the oil storage tank can be provided only on the lower surface of the third plane slide, or only on the upper surface of the fourth plane slide, or the oil storage tank can be provided on both the lower surface of the third plane slide and the upper surface of the fourth plane slide. In this embodiment, the third plane slide is made of MHP material, and the oil storage tank can be directly formed on the lower surface of the third plane slide by injection molding process, which is simple and convenient to process. The present application does not impose any restrictions on the shape, quantity and distribution of the oil storage tank.

[0058] Similarly, in this embodiment, the shape and size of the third planar slide plate may be the same as or different from the shape and size of the fourth planar slide plate, and this application does not impose any limitation on this.

[0059] Please continue to refer to Figure 1 and Figure 2 A rotation groove is provided on the upper surface of the support plate 3, the intermediate spherical crown plate 11 is located in the rotation groove, one end of the intermediate body 2 extends into the rotation groove and is slidably connected with the intermediate spherical crown plate 11 through the spherical slide plate 10, and the edge of the one end of the intermediate body 2 has a protrusion 13, and there is a preset distance between the protrusion 13 and the groove wall of the rotation groove, and the protrusion 13 can abut against the groove wall of the rotation groove when the intermediate body 2 slides relative to the support plate 3 to a second set distance.

[0060] In this embodiment, the protrusion 13 is mainly used to limit the relative movement in the horizontal direction between the intermediate body 2 and the support plate 3. In this embodiment, the protrusion 13 and the rotation groove are both circular, so the horizontal direction includes but is not limited to the first direction and the second direction mentioned above.

[0061] It should be understood that there is a preset distance between the protrusion 13 and the groove wall of the rotation groove, and the preset distance is set to be as small as possible without affecting the rotation of the intermediate body 2 relative to the intermediate spherical crown plate 11.

[0062] In this embodiment, the performance indicators of the shock-absorbing and energy-absorbing steel support are designed as follows: the vertical pressure design value is 2300kN; the radial horizontal shear force design value is 1050kN; the annular horizontal shear force design value is 3200kN; the radial horizontal displacement design value is ±100mm; the radial horizontal stiffness design value is 10kN / mm; the equivalent damping ratio design value is 8%; and the rotation angle design value is 0.035rad.

[0063] In this embodiment, the in-depth processing technical requirements of the shock-absorbing and energy-absorbing steel bearing are as follows: the surface of the exposed steel component should be sprayed with epoxy zinc-rich primer, and the dry film thickness should not be less than 70μm. The steel bearing is welded to the upper and lower structures, and E50 type welding rods are used for manual welding, and ER50-3 welding wires are used for carbon dioxide gas shielded welding. For other processing technical requirements and inspection methods, please refer to "Spherical Bearings for Building Steel Structures" (GB / T 32836-2016). After the bearing is assembled, a temporary fixing device and a dust cover need to be installed.

[0064] In summary, the embodiment of the present invention provides a shock-absorbing and energy-absorbing steel support, which has the following effective effects:

[0065] 1) By arranging the elastic member in the first direction (radial direction), the horizontal stiffness can be improved without affecting the movement of the steel support in the first direction in the horizontal plane, thereby solving the problem of low horizontal stiffness of the existing steel support;

[0066] 2) By arranging a damping member in the second direction (annular direction), the damping of the steel support in the first direction can be increased, thereby improving the shock absorption and energy dissipation performance of the steel support. While ensuring the safety of the horizontal bearing capacity of the steel support, it can also improve its shock absorption and energy dissipation effect on the upper structure, thus solving the problem of poor shock absorption and energy dissipation performance of traditional steel supports;

[0067] 3) The sliding friction between the box body and the intermediate body is reduced by providing a first sliding assembly between the box body and the intermediate body for sliding connection;

[0068] 4) By arranging a spherical sliding plate and an intermediate spherical crown plate between the intermediate body and the support plate, the intermediate body can achieve a certain degree of rotation in a vertical plane. At the same time, by arranging a second sliding component between the intermediate spherical crown plate and the support plate for sliding connection, the relative position of the intermediate body and the intermediate spherical crown plate can be ensured, and the force of the intermediate spherical crown plate can be improved;

[0069] 5) The entire steel support has a compact structure, ingenious design, good reliability and low production cost, and is suitable for large-scale promotion.

[0070] The above is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any technician in the relevant technical field, without departing from the scope of the technical solution of the present invention, makes any form of equivalent replacement or modification to the technical solution and technical content disclosed in the present invention, which does not depart from the content of the technical solution of the present invention and still falls within the protection scope of the present invention.

Claims

1. A shock-absorbing and energy-absorbing steel support, characterized in that: It includes a box body, an intermediate body, an elastic component, a damping component and a support plate; wherein, The intermediate body has one end connected to the support plate and the other end extending into the box body and slidably connected to the box body, and the intermediate body and the box body can slide relative to each other along a first direction; The box body has two accommodating cavities arranged on opposite sides of the middle body along the first direction; The elastic component comprises two elastic members respectively located in the two accommodating cavities, one end of the elastic member is connected to the middle body, and the other end extends horizontally along the first direction and can abut against the cavity wall of the accommodating cavity when the middle body and the box body slide relative to each other to a first set distance; The damping assembly comprises two damping members respectively arranged on opposite sides of the intermediate body along the second direction, two ends of the damping member are respectively connected to the box body and the support plate and are used to limit the relative movement of the box body and the support plate in the first direction, and the second direction is perpendicular to the first direction; The box body and the intermediate body are slidably connected via a first sliding assembly, wherein the first sliding assembly comprises a first planar slide plate and a second planar slide plate that are slidably connected, wherein the first planar slide plate is fixedly connected to the box body, and the second planar slide plate is fixedly connected to the intermediate body; The intermediate body is rotatably connected to the support plate, and the intermediate body and the support plate can rotate relative to each other in a vertical plane; The intermediate body is connected to the support plate via a rotating assembly, the rotating assembly comprising a spherical slide plate and an intermediate spherical crown plate, the upper surface of the spherical slide plate is fitted and fixedly connected to the lower surface of the intermediate body, the lower surface of the spherical slide plate is fitted and slidably connected to the upper surface of the intermediate spherical crown plate, and the lower surface of the intermediate spherical crown plate is slidably connected to the upper surface of the support plate; A rotation groove is provided on the upper surface of the support plate, the intermediate spherical crown plate is located in the rotation groove, one end of the intermediate body extends into the rotation groove and is slidably connected with the intermediate spherical crown plate through the spherical slide plate, and the edge of the one end of the intermediate body has a protrusion, and a preset distance is provided between the protrusion and the groove wall of the rotation groove, and the protrusion can abut against the groove wall of the rotation groove when the intermediate body slides relative to the support plate to a second set distance.

2. The shock-absorbing and energy-absorbing steel support according to claim 1, characterized in that: A plurality of oil storage tanks for storing lubricating oil are arranged on the sliding surface of the first planar slide plate and / or the second planar slide plate.

3. The shock-absorbing and energy-absorbing steel support according to claim 1, characterized in that: The intermediate spherical crown plate and the support plate are slidably connected via a second sliding assembly, and the second sliding assembly includes a third plane slide plate and a fourth plane slide plate that are slidably connected, the third plane slide plate is fixedly connected to the lower surface of the intermediate spherical crown plate, and the fourth plane slide plate is fixedly connected to the upper surface of the support plate.

4. The shock-absorbing and energy-absorbing steel support according to claim 3 is characterized in that: An oil storage tank for storing lubricating oil is arranged on the sliding surface of the third planar slide plate and / or the fourth planar slide plate.

5. The shock-absorbing and energy-absorbing steel support according to claim 1, characterized in that: The elastic member is a leaf spring, a threaded hole is provided at the center of the leaf spring along the first direction, and a fastener penetrates through the threaded hole and is threadedly connected with the intermediate body.

6. The shock-absorbing and energy-absorbing steel support according to claim 5, characterized in that: An accommodating hole is arranged on the cavity wall of the accommodating cavity, and when the leaf spring abuts against the cavity wall of the accommodating cavity, one end of the fastener facing away from the middle body extends into the accommodating hole.

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