A damping shock-absorbing support

Abstract

The present invention discloses a damping and shock-absorbing support, which includes an upper support plate, a screw nut assembly, a screw rod, a support base plate, a screw rod bracket assembly and a middle lining plate. The screw nut assembly is fixed on the upper support plate, the screw rod bracket assembly is fixed on the support base plate, and the screw rod connects the screw nut assembly and the screw rod bracket assembly. When the upper support plate moves horizontally, the two ends of the screw rod are restricted, so the screw rod remains stationary, while the screw nut rotates relative to the screw rod. When the screw nut rotates, it will slide and rub against the friction and wear-resistant sleeve, thereby consuming its kinetic energy, thereby achieving the purpose of damping and shock absorption.

Description

Technical Field

[0001] The present invention relates to the technical field of shock-absorbing supports, in particular to a damping shock-absorbing support. Background Art

[0002] The existing damping shock-absorbing bearings mainly include lead rubber damping shock-absorbing bearings, E-type steel damping shock-absorbing bearings, C-type steel damping shock-absorbing bearings, cylinder damping shock-absorbing bearings, etc.

[0003] The existing damping and shock-absorbing bearings have the following disadvantages:

[0004] 1) The lead core rubber damping shock-absorbing bearing relies on the characteristics of the lead core that is easy to deform and recover to achieve its damping and shock-absorbing purpose, but the rubber used is easy to age and has a short lifespan.

[0005] 2) E-type steel and C-type steel damping and shock-absorbing bearings rely on the elastic and plastic deformation of steel to achieve their damping and shock-absorbing purposes, but they can return to their original state within the elastic deformation range. If they exceed the elastic deformation range of the material, they will never be able to return to their original state, and the damping and shock-absorbing function of the bearing will disappear.

[0006] 3) The oil cylinder damping and shock absorbing support uses the liquid with retention properties in the cylinder to flow back and forth in the pores on the piston to achieve the purpose of damping and shock absorption. However, the seals of the hydraulic cylinder are easy to wear and leak after long-term use. In addition, the liquid material in the cylinder will also age with the passage of time. When these phenomena occur, its damping and shock absorption function will be greatly reduced or even disappear. Summary of the Invention

[0007] The purpose of the present invention is to provide a damping and shock-absorbing bearing to solve the problems existing in the above-mentioned prior art. The damping and shock-absorbing structure of the new bearing adopts a mechanical structure, and the materials used are metal materials and metallurgical materials. The structure is relatively simple and easy to maintain; compared with the lead core rubber damping and shock-absorbing bearing, it has a long service life; compared with the cylinder damping and shock-absorbing bearing, it has the advantages of easy processing and low production cost; compared with the C-type steel and E-type steel damping and shock-absorbing bearings, it has the characteristics of recoverability under large displacement.

[0008] To achieve the above object, the present invention provides the following solution: The present invention provides a damping and shock absorbing support, comprising

[0009] an upper support plate, the screw nut assembly being fixed to the bottom of the upper support plate; and

[0010] A screw nut assembly, comprising a screw nut base, a screw nut, a friction and wear-resistant sleeve, and a first gland; the screw nut base is fixed to the bottom of the upper support plate; the screw nut is rotatably disposed within the screw nut base; the first gland is mounted on the screw nut base and located on both sides of the screw nut; the friction and wear-resistant sleeve is fixed to the inner side of the first gland and contacts the screw nut; and

[0011] A screw rod, wherein the first end of the screw rod is mounted on the screw rod bracket assembly, the second end of the screw rod passes through the gland and the screw nut on the screw nut base and is assembled with the screw rod bracket assembly on the other side, and the screw nut is rotatable relative to the screw rod; and

[0012] A support base plate, wherein the screw rod bracket assemblies are symmetrically arranged at both ends of the screw rod; and

[0013] A screw rod bracket assembly, comprising a screw rod bracket base, a slider, a ball hinge sleeve, and a screw rod limiting shaft. The end of the screw rod and the ball hinge sleeve are assembled and connected to each other, and the end of the screw rod and the ball hinge sleeve can rotate or swing relative to each other. A cylindrical hole is formed in the ball hinge sleeve at a position perpendicular to the axial direction of the screw rod. The screw rod limiting shaft is passed through the cylindrical hole. The two ends of the screw rod limiting shaft are connected to the slider. The slider is slidably assembled in the inner cavity of the screw rod bracket base and can slide up and down along the screw rod bracket base.

[0014] A middle lining plate is provided between the upper support plate and the support bottom plate.

[0015] In one embodiment, two screw nut assemblies are symmetrically provided at the bottom of the upper support plate along the sliding direction; and the middle lining plate is located between the two screw nut assemblies.

[0016] In one embodiment, the inner diameter of the screw nut and the outer diameter of the screw rod are spirally matched.

[0017] In one embodiment, the helix angle of the screw nut is not less than 45°.

[0018] In one embodiment, the end of the spiral rod is in the form of a spherical hole, the outer end surface of the ball hinge sleeve is a spherical surface, and the spherical hole of the spiral rod and the outer spherical surface of the ball hinge sleeve are assembled with each other.

[0019] In one embodiment, the screw rod bracket assembly further includes a limiting shaft fixing cover, and both ends of the screw rod limiting shaft are fixed on the slider and sealed by the limiting shaft fixing cover.

[0020] In one embodiment, the screw rod bracket assembly further includes a second pressure cap, which is installed on the top of the inner cavity of the screw rod bracket base, and the second pressure cap is installed on the top of the screw rod bracket base by bolts.

[0021] In one embodiment, the screw nut assembly and the screw rod bracket assembly are respectively fixed to the upper support plate and the support base plate by bolts or pins.

[0022] Compared with the prior art, the present invention has achieved the following beneficial technical effects:

[0023] The damping and shock-absorbing support in the present invention includes an upper support plate, a screw nut assembly, a screw rod, a support base plate, a screw rod bracket assembly and a middle lining plate. The screw nut assembly is fixed on the upper support plate, the screw rod bracket assembly is fixed on the support base plate, and the screw rod connects the screw nut assembly and the screw rod bracket assembly. When the upper support plate moves horizontally, the two ends of the screw rod are restricted, so the screw rod does not move, while the screw nut rotates relative to the screw rod. When the screw nut rotates, it will slide and rub against the friction and wear-resistant sleeve, thereby consuming its kinetic energy, thereby achieving the purpose of damping and shock absorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 The overall structure of the damping and shock absorbing support in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0026] Figure 2 This is the structural composition diagram of the screw nut assembly;

[0027] Figure 3 Schematic diagram of the structure of the damping shock-absorbing support Figure 2 ;

[0028] Figure 4 This is a structural diagram of the spiral rod bracket assembly;

[0029] Among them, 1 support base plate; 2 upper support plate; 3 middle lining plate; 4 screw nut assembly; 4-1 screw nut base; 4-2 friction and wear-resistant sleeve; 4-3 screw nut; 4-4 pressure cover one; 5 screw rod; 6 screw rod bracket assembly; 6-1 screw rod bracket base; 6-2 slider; 6-3 limit shaft fixed pressure cover; 6-4 pressure cover two; 6-5 ball joint sleeve; 6-6 screw rod limit shaft; 7 bolts. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] The purpose of the present invention is to provide a damping and shock-absorbing bearing to solve the problems existing in the above-mentioned prior art. The damping and shock-absorbing structure of the new bearing adopts a mechanical structure, and the materials used are metal materials and metallurgical materials, which have a long service life; compared with the cylinder damping and shock-absorbing bearing, it has the advantages of easy processing and low production cost; compared with C-shaped steel and E-shaped steel damping and shock-absorbing bearings, it has the characteristics of recoverability under large displacement.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figures 1-4 As shown, the present invention provides a damping shock absorbing support, comprising

[0034] The upper support plate 2, the screw nut assembly 4 is fixed to the bottom of the upper support plate 2; and

[0035] The screw nut assembly 4 includes a screw nut base 4-1, a screw nut 4-3, a friction and wear-resistant sleeve 4-2 and a pressure cover 4-4. The screw nut base 4-1 is fixed to the bottom of the upper support plate 2, the screw nut 4-3 is rotatably arranged in the screw nut base 4-1, the pressure cover 4-4 is installed on the screw nut base 4-1 by bolts 7 and is located on both sides of the screw nut 4-3. The friction and wear-resistant sleeve 4-2 is fixed to the inner side of the pressure cover 4-4 and contacts the screw nut 4-3; and

[0036] A screw rod 5, wherein the first end of the screw rod 5 is mounted on the screw rod support assembly 6, and the second end of the screw rod 5 passes through the gland 4-4 and the screw nut 4-3 on the screw nut base 4-1 and is assembled with the screw rod support assembly 6 on the other side, and the screw nut 4-3 can rotate relative to the screw rod 5; and

[0037] A support base plate 1, on which screw rod bracket assemblies 6 are symmetrically arranged at both ends of the screw rod 5; and

[0038] The screw rod bracket assembly 6 includes a screw rod bracket base 6-1, a slider 6-2, a ball hinge sleeve 6-5, and a screw rod limiting shaft 6-6. The end of the screw rod 5 is assembled and connected to the ball hinge sleeve 6-5, and the end of the screw rod 5 and the ball hinge sleeve 6-5 can rotate or swing relative to each other; a cylindrical hole is opened in the ball hinge sleeve 6-5 perpendicular to the axial direction of the screw rod 5, and the screw rod limiting shaft 6-6 is passed through the cylindrical hole. The two ends of the screw rod limiting shaft 6-6 are connected to the slider 6-2, which is slidably assembled in the inner cavity of the screw rod bracket base 6-1 and can slide up and down along the screw rod bracket base 6-1; and

[0039] The middle lining plate 3 is installed between the upper support plate 2 and the support base plate 1. A flat sliding pair is installed between the middle lining plate 3 and the upper support plate 2 to achieve horizontal sliding to accommodate the expansion and contraction of the beam. A curved sliding pair is installed between the middle lining plate 3 and the support base plate 1 to achieve rotation to accommodate the flexure of the beam. The role of the middle lining plate 3 is to enable the horizontal sliding and rotation functions of the support to meet the needs of the beam.

[0040] In one embodiment, two screw nut assemblies 4 are symmetrically provided at the bottom of the upper support plate 2 along the sliding direction; the middle lining plate 3 is located between the two screw nut assemblies 4.

[0041] In one embodiment, the inner diameter of the screw nut 4-3 and the outer diameter of the screw rod 5 are spirally matched; the friction and wear-resistant sleeve 4-2 is fixed to the pressure cover 4-4, the pressure cover 4-4 is fixed to the screw nut base 4-1, and the screw nut 4-3 and the screw nut base 4-1 slide relative to each other.

[0042] In one embodiment, the helix angle of the screw nut 4 - 3 is not less than 45°, otherwise a large axial force will be generated through the decomposition of force.

[0043] In one embodiment, the end of the screw rod 5 is in the form of a spherical hole, the outer end surface of the ball hinge sleeve 6-5 is a spherical surface, and the spherical hole of the screw rod 5 and the outer spherical surface of the ball hinge sleeve 6-5 are assembled with each other.

[0044] In one embodiment, the screw rod bracket assembly 6 further includes a limit shaft fixing cover 6-3, and both ends of the screw rod limit shaft 6-6 are respectively fixed on the slider 6-2 and sealed by the limit shaft fixing cover 6-3.

[0045] In one embodiment, the screw rod support assembly 6 further includes a second pressure cover 6-4, and the second pressure cover 6-4 is installed on the top of the inner cavity of the screw rod support base 6-1, and the second pressure cover 6-4 is installed on the top of the screw rod support base 6-1 through bolts 7.

[0046] In one embodiment, the screw nut assembly 4 and the screw rod bracket assembly 6 are respectively fixed to the upper support plate 2 and the support base plate 1 by bolts 7.

[0047] When the beam body is extended or retracted, the upper support plate 2 slides horizontally, driving the screw nut 4-3 to rotate. Since it slides slowly, the friction between the screw nut 4-3 and the friction and wear-resistant sleeve 4-2 is very small, which can achieve normal horizontal displacement. When the upper support plate 2 slides horizontally, it will drive the screw nut 4-3 to move axially. Since the screw nut 4-3 and the screw rod 5 are in a spiral fit, the two ends of the screw rod 5 are fixed to the support base plate 1 through the screw rod bracket base 6-1, and the screw rod 5 cannot rotate, only when the screw nut 4-3 rotates can the upper support plate 2 slide horizontally. Note: The helix angle cannot be less than 45 degrees, otherwise a large axial force will be generated through the decomposition of force. The screw nut 4-3 is axially translated on the screw rod 5. Because its fit is a spiral fit, not a smooth surface fit, the screw nut 4-3 can only achieve axial back-and-forth translation by rotating.

[0048] When the beam is bent, a certain angle is formed between the support plate 2 and the support base plate 1 on the support. In order to ensure that the rotational fit between the screw nut 4-3 and the screw rod 5 is not blocked, the connection between the screw rod 5 and the screw rod support base adopts a slider 6-2 and a ball hinge sleeve 6-5 structure. The slider 6-2 can slide up and down in the screw rod support base 6-1. The fit between the screw rod 5 and the ball hinge sleeve 6-5 can achieve rotation and swing. The end hole of the screw rod 5 is a spherical hole, and the outside of the ball hinge sleeve 6-5 is a spherical surface. The fit between the two can achieve rotation and swing. The inner hole of the ball hinge sleeve 6-5 is a cylindrical hole, which is tightly fitted with the slider 6-2 through the screw rod limiting shaft 6-6. The slider 6-2 and the screw rod support base 6-1 are in an up and down sliding fit. This action state is to adapt to the rotation of the support and prevent the fit between the screw rod 5 and the screw nut 4-3 from getting stuck, causing the support to be unable to slide horizontally normally.

[0049] When an earthquake strikes, the seismic force is transmitted from the bridge pier to the bearing base plate 1. Due to the rapid slippage, resonance is easily formed, which can cause bridge damage. To reduce the damage caused by earthquakes, this bearing is adopted. When the seismic force is transmitted to the bearing base plate 1, the screw rod 5 drives the screw nut 4-3 to rotate. As the screw nut 4-3 rotates, it slides and rubs against the friction-resistant sleeve 4-2, thereby consuming its kinetic energy and achieving the purpose of damping and reducing shock.

[0050] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description. It is intended that all changes that fall within the meaning and range of equivalents of the claims be included in the present invention, and any reference signs in the claims should not be construed as limiting the claims to which they relate.

[0051] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A damping and shock absorbing support, characterized in that: include an upper support plate, the screw nut assembly being fixed to the bottom of the upper support plate; and A screw nut assembly, comprising a screw nut base, a screw nut, a friction and wear-resistant sleeve, and a first gland; the screw nut base is fixed to the bottom of the upper support plate; the screw nut is rotatably disposed within the screw nut base; the first gland is mounted on the screw nut base and located on both sides of the screw nut; the friction and wear-resistant sleeve is fixed to the inner side of the first gland and contacts the screw nut; and A screw rod, wherein the first end of the screw rod is mounted on the screw rod bracket assembly, the second end of the screw rod passes through the gland and the screw nut on the screw nut base and is assembled with the screw rod bracket assembly on the other side, and the screw nut is rotatable relative to the screw rod; as well as A support base plate, wherein the screw rod bracket assembly is symmetrically arranged at both ends of the screw rod on the support base plate; as well as A screw rod bracket assembly, the screw rod bracket assembly includes a screw rod bracket base, a slider, a ball hinge sleeve and a screw rod limiting shaft, the end of the screw rod and the ball hinge sleeve are assembled and connected to each other, and the end of the screw rod and the ball hinge sleeve can rotate or swing relative to each other; a cylindrical hole is opened in the ball hinge sleeve at a position perpendicular to the axial direction of the screw rod, the screw rod limiting shaft is passed through the cylindrical hole, and the two ends of the screw rod limiting shaft are connected to the slider, the slider is slidably assembled in the inner cavity of the screw rod bracket base, and the slider can slide up and down along the screw rod bracket base; as well as A middle lining plate is provided between the upper support plate and the support bottom plate; The bottom of the upper support plate is symmetrically provided with two screw nut assemblies along the sliding direction; the middle lining plate is located between the two screw nut assemblies; the inner diameter of the screw nut and the outer diameter of the screw rod are spirally matched.

2. The damping and shock absorbing support according to claim 1, characterized in that: The helix angle of the screw nut is not less than 45°.

3. The damping and shock absorbing support according to claim 1, characterized in that: The end of the screw rod is in the form of a spherical hole, the outer end surface of the ball hinge sleeve is a spherical surface, and the spherical hole of the screw rod and the outer spherical surface of the ball hinge sleeve are assembled with each other.

4. The damping and shock absorbing support according to claim 1, characterized in that: The screw rod bracket assembly further includes a limiting shaft fixing cover. Both ends of the screw rod limiting shaft are respectively fixed on the slider and sealed by the limiting shaft fixing cover.

5. The damping and shock absorbing support according to claim 1, characterized in that: The screw rod bracket assembly also includes a second pressure cap, which is installed on the top of the inner cavity of the screw rod bracket base. The second pressure cap is installed on the top of the screw rod bracket base through bolts.

6. The damping and shock absorbing support according to claim 1, characterized in that: The screw nut assembly and the screw rod bracket assembly are respectively fixed to the upper support plate and the support base plate by bolts or pins.

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