Spherical support with vertical vibration reduction function

Abstract

The utility model discloses a spherical support with a vertical vibration reduction function, which comprises an upper support plate, a plane sliding pair is formed between the upper support plate and a spherical crown lining plate, a cambered surface sliding pair is formed between the spherical crown lining plate and a middle steel plate, a vibration reduction structure is arranged between the middle steel plate and a bottom basin, and the vibration reduction structure is connected with the spherical crown lining plate. A connecting assembly is further arranged in the bottom basin. According to the utility model, the anti-vibration cushion layer is added on the basis of the spherical support, and the anti-vibration cushion layer is made of an elastomer material, so that the spherical support has the advantages of strong bearing capacity, good elasticity, excellent anti-aging performance and anti-fatigue performance and the like. According to the overall structure, the effective height of the support is guaranteed and the operation condition of the anti-vibration cushion layer is judged by arranging the restraint ring. Compared with a common support, the vertical vibration reduction support has the advantages that the vertical vibration reduction function can be achieved, upper vibration transmitted to a lower foundation is effectively reduced, meanwhile, compared with a spherical support of a conventional structure, the shape and height size change is not obvious, and obvious economical efficiency is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vibration reduction of bridges and construction projects, and in particular relates to a spherical bearing with a vertical vibration reduction function. Background Art

[0002] With the rapid development of high-speed railways, the vibration and noise generated by rail transit vehicles during high-speed operation have seriously affected the normal use of surrounding sensitive buildings and related facilities. How to minimize the vibration and noise generated by vehicle operation is of great significance to the development of the rail transit field; bridge bearings are key components connecting bridge piers and beams in rail transit lines. The vibration of the beam and superstructure is transmitted to the lower foundation through the bearings. Bridge vibration reduction can be achieved through the vibration reduction design of bridge bearings. Summary of the invention

[0003] The utility model is proposed to solve the problems existing in the prior art, and its purpose is to provide a spherical bearing with a vertical vibration reduction function.

[0004] The technical solution of the utility model is: a spherical bearing with a vertical vibration reduction function, comprising an upper bearing plate, a plane sliding pair formed between the upper bearing plate and the spherical crown lining plate, an arc sliding pair formed between the spherical crown lining plate and the middle steel plate, a vibration reduction structure is arranged between the middle steel plate and the bottom basin, and a connecting component is also arranged in the bottom basin.

[0005] Furthermore, the vibration-damping structure is a vibration-damping pad, which is arranged between the middle steel plate and the bottom basin, and a containing structure corresponding to the vibration-damping pad is arranged in the middle steel plate and the bottom basin.

[0006] Furthermore, the vibration-damping pad layer includes an upper steel plate located at the upper layer, an elastic vibration-damping pad located in the middle, and a lower steel plate located at the lower layer.

[0007] Furthermore, an upper sinking platform groove is formed at the lower end of the middle steel plate, and the upper sinking platform groove is a containing structure in the middle steel plate, and the upper sinking platform groove contains the upper steel plate.

[0008] Furthermore, an annular wall is formed upwardly at the upper end of the bottom basin, and a receiving groove is formed inside the annular wall, and the receiving groove receives the vibration-damping pad layer and part of the middle steel plate.

[0009] Furthermore, a sinking platform groove is formed at the upper end of the bottom basin, and the sinking platform groove is a containing structure in the bottom basin, and the sinking platform groove contains the lower steel plate.

[0010] Furthermore, a deformation gap is formed between the inner wall of the annular wall and the outer wall of the vibration-damping pad layer, providing a deformation space for the vibration-damping pad layer.

[0011] Furthermore, an external constraint structure is provided between the middle steel plate and the bottom basin, and the external constraint structure performs external constraint in the vibration reduction process.

[0012] Furthermore, an internal constraint structure is provided between the middle steel plate and the bottom basin, and the internal constraint structure performs internal constraint in the vibration reduction process.

[0013] Furthermore, the constraint strokes of the outer constraint and the inner constraint are the same, so that the constraints are performed synchronously.

[0014] The beneficial effects of the utility model are as follows:

[0015] The utility model adds a vibration-damping cushion layer on the basis of the spherical bearing. The vibration-damping cushion layer is made of an elastomeric material and has many advantages such as strong bearing capacity, good elasticity, excellent anti-aging performance and anti-fatigue performance. At the same time, a sealing device is added to the vibration-damping bearing to prevent the vibration-damping cushion layer from contacting the outside world and ensure its stable vibration-damping function; the overall structure is provided with a constraint ring to ensure the effective height of the bearing and determine the operating condition of the vibration-damping cushion layer.

[0016] Compared with ordinary bearings, the utility model can realize the vertical vibration reduction function and effectively reduce the upper vibration transmitted to the lower foundation. At the same time, compared with the spherical bearings of conventional structures, the shape and height dimensions do not change significantly, and it has obvious economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the middle steel plate in the utility model;

[0019] Figure 3 It is a structural schematic diagram of the bottom basin in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the vibration-damping cushion layer in the utility model;

[0021] in:

[0022] 1 Upper support plate 2 Ball crown lining plate

[0023] 3 Middle steel plate 4 Bottom basin

[0024] 5 Flat skateboard 6 Spherical skateboard

[0025] 7 Vibration-damping pad 8 Anchor bolt assembly

[0026] 31 concave spherical surface 32 constraint ring

[0027] 33 Upper sink groove

[0028] 41 annular wall 42 boss

[0029] 43 sinking groove

[0030] 71 Upper steel plate 72 Elastic vibration damping pad

[0031] 73 middle hole 74 lower steel plate. DETAILED DESCRIPTION

[0032] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and embodiments:

[0033] like Figures 1 to 4 As shown, a spherical bearing with vertical vibration reduction function includes an upper bearing plate 1, a plane sliding pair is formed between the upper bearing plate 1 and the spherical crown lining plate 2, an arc sliding pair is formed between the spherical crown lining plate 2 and the middle steel plate 3, a vibration reduction structure is arranged between the middle steel plate 3 and the bottom basin 4, and a connecting component is also arranged in the bottom basin 4.

[0034] The vibration reduction structure is a vibration reduction pad 7 , which is arranged between the middle steel plate 3 and the bottom basin 4 , and a receiving structure corresponding to the vibration reduction pad 7 is arranged in the middle steel plate 3 and the bottom basin 4 .

[0035] The vibration-damping pad layer 7 includes an upper steel plate 71 located at the upper layer, an elastic vibration-damping pad 72 located in the middle, and a lower steel plate 74 located at the lower layer.

[0036] An upper sinking groove 33 is formed at the lower end of the middle steel plate 3 . The upper sinking groove 33 is a receiving structure in the middle steel plate 3 . The upper sinking groove 33 receives the upper steel plate 71 .

[0037] An annular wall 41 is formed upwardly at the upper end of the bottom basin 4 , and a receiving groove is formed inside the annular wall 41 , and the receiving groove receives the vibration-damping pad 7 and part of the middle steel plate 3 .

[0038] A sinking platform groove 43 is formed at the upper end of the bottom basin 4 . The sinking platform groove 43 is a receiving structure in the bottom basin 4 . The sinking platform groove 43 receives the lower steel plate 74 .

[0039] A deformation gap is formed between the inner wall of the annular wall 41 and the outer wall of the vibration-damping pad layer 7 , providing a deformation space for the vibration-damping pad layer 7 .

[0040] An external constraint structure is arranged between the middle steel plate 3 and the bottom basin 4, and the external constraint structure performs external constraint in the vibration reduction process.

[0041] An internal constraint structure is provided between the middle steel plate 3 and the bottom basin 4, and the internal constraint structure performs internal constraint during the vibration reduction process.

[0042] The constraint strokes of the outer constraint and the inner constraint are the same, so the constraints are performed synchronously.

[0043] Specifically, a plane slide plate 5 is provided between the upper support plate 1 and the spherical crown lining plate 2, and the plane slide plate 5 is connected to the upper support plate 1 / spherical crown lining plate 2, thereby forming a plane sliding pair.

[0044] Specifically, a spherical slide plate 6 is provided between the spherical crown lining plate 2 and the middle steel plate 3 , and the spherical slide plate 6 is connected to the spherical crown lining plate 2 / the middle steel plate 3 , thereby forming a cambered sliding pair.

[0045] Specifically, the external constraint includes a constraint ring 32 formed on the outer wall of the middle steel plate 3 , the constraint ring 32 corresponds to the annular wall 41 in the bottom basin 4 , and the stroke between the constraint ring 32 and the annular wall 41 is the external constraint stroke.

[0046] Specifically, the inner constraint includes a boss 42, which is arranged at the upper end of the bottom basin 4, and the boss 42 corresponds to the bottom center of the middle steel plate 3. The stroke between the boss 42 and the bottom of the middle steel plate 3 is the inner constraint stroke.

[0047] Correspondingly, a middle hole 73 is formed in the middle of the vibration-damping cushion layer 7 , and the middle hole 73 is clearance-matched with the boss 42 .

[0048] Correspondingly, the gap between the restraining ring 32 and the annular wall 41 is equal to the gap between the boss 42 and the middle steel plate 3 .

[0049] Specifically, Figure 3 As shown, the inner wall diameter of the annular wall 41 is D1, and the groove wall of the sinking platform groove 43 is D2, and D1 is larger than D2.

[0050] Specifically, the middle steel plate 3 is a circular structure, and a concave spherical surface 31 is formed on the upper part of the middle steel plate 3. The concave spherical surface 31 cooperates with the spherical crown primary plate 2 to form a bearing rotation surface. The lower part of the middle steel plate 3 forms an upper sinking platform groove 33 in which the vibration-damping pad 7 can be embedded. The upper steel plate 71 on the upper part of the vibration-damping pad 7 is embedded in the upper sinking platform groove 33. The upper steel plate 71 plays a role in ensuring that the vibration-damping pad 7 is always in the center of the bearing. A restraining ring 32 of an annular structure is provided on the outer cylindrical surface of the middle steel plate 3.

[0051] After the support is assembled, there will be a gap between the lower plane of the restraint ring 32 and the upper plane of the bottom basin 4. The restraint ring 32 can ensure that the support has a certain vertical displacement and provide overload locking protection.

[0052] In actual use, when the load borne by the support exceeds the design load of the support, the restraint ring 32 can enable the support to maintain sufficient vertical strength to avoid excessive vertical deformation of the support, which would affect the normal operation of the line.

[0053] Specifically, the upper part of the bottom basin 4 is an annular annular wall 41 , and the lower part is a square bottom plate. The middle steel plate 3 is installed inside the annular wall 41 . The middle steel plate 3 and the bottom basin 4 can realize the limiting effect on the vibration-damping cushion layer 7 .

[0054] Specifically, a sealing ring is provided on the bottom basin 4 to prevent the vibration-damping cushion layer 7 from contacting the external environment.

[0055] Specifically, a sinking groove 43 is provided at the lower plane of the inner cavity of the annular wall 41, in which the vibration damping pad 7 can be embedded, and a lower steel plate 74 of the vibration damping pad 7 is embedded in the sinking groove 43. The lower steel plate 74 and the sinking groove 43 together ensure that the vibration damping pad 7 is always in the center of the support.

[0056] Specifically, the outer diameter of the sinking platform groove 43 is smaller than the inner diameter of the annular wall 41, providing horizontal deformation space for the vibration-damping pad 7, so that the vibration-damping pad 7 has elastic deformation ability. A circular boss 42 is provided in the middle of the sinking platform groove 43, and the circular boss 42 is installed in the middle hole 73 of the vibration-damping pad 7. The gap between the boss 42 and the lower plane of the middle steel plate 3 is equal to the gap between the constraint ring 32 and the upper plane of the bottom basin 4. The boss 42 and the constraint ring 32 can not only ensure that when the load exceeds the design value, the vertical deformation of the support is prevented from exceeding the limit, but also prevent the constraint ring 32 from being too large and increasing the design height of the support.

[0057] Specifically, the structure of the vibration-damping pad 7 is a three-layer circular structure, which is formed by bonding an upper steel plate 71 and a lower steel plate 74 on the upper and lower sides of an elastic vibration-damping pad 72, thereby ensuring that the vibration-damping pad 7 has sufficient vertical stiffness. The vibration-damping pad 7 is provided with a middle hole 73. During design, the size of the middle hole 73 can be adjusted to adjust the vertical stiffness of the support to achieve different vibration-damping effects. The diameter of the vibration-damping pad 7 is smaller than the inner diameter of the annular wall 41, providing a horizontal deformation space for the vibration-damping pad 7; the elastic vibration-damping pad 72 in the vibration-damping pad 7 is a key component of a vibration-damping spherical support, which can be made of polyurethane material, which has excellent vertical load-bearing performance, elastic performance, anti-aging performance and anti-fatigue performance; the support in the utility model realizes the vibration-damping function of the support through a polyurethane elastomer vibration-damping pad.

[0058] As a variation, the elastic vibration-damping pad 72 is not limited to polyurethane material, and different elastic materials can be selected according to specific design requirements.

[0059] As a variation, the structure of the fitting between the bottom basin 4 and the middle steel plate 3 is not limited to the circular structure in the present application. When the middle steel plate 3 is a square structure, the constraint ring 32 is also a square structure, and the corresponding bottom basin 4 is also a square structure, which can also achieve the effect achieved in the present application; alternatively, the middle steel plate 3 is a circular structure, the constraint ring 32 is a square structure, and the corresponding bottom basin 4 is an inner circle and outer square structure, which can also achieve the effect achieved in the present application.

[0060] The functions and principles of this utility model are as follows:

[0061] The flat stainless steel slide plate welded on the upper bearing plate 1 of the vibration-damping spherical bearing and the modified ultra-high molecular weight polyethylene slide plate embedded on the spherical crown lining plate 2 form a flat friction pair to meet the horizontal sliding requirements of the bridge; the spherical stainless steel slide plate welded on the lower surface of the spherical crown lining plate 2 and the modified ultra-high molecular weight polyethylene slide plate embedded on the concave spherical surface 31 form a spherical friction pair to meet the rotation displacement requirements of the beam. The load on the upper part of the bridge is evenly transferred to the lower structure through the flat friction pair and the spherical friction pair.

[0062] The vibration-damping pad 7 is the most critical component of the vibration-damping spherical bearing. It is formed as a whole by bonding steel plates together. In order to ensure that the polyurethane material has sufficient rigidity, it is arranged in the basin cavity of the bottom basin, and a sink groove and a vibration-damping pad 7 are provided in the bottom basin 4 and the middle steel plate 3 to cooperate and limit the vibration-damping pad 7 to ensure that the vibration-damping pad 7 is always in the center of the bearing to avoid the vibration-damping pad 7 sliding to one side and affecting the horizontal deformation of the polyurethane.

[0063] The diameter of the vibration-damping pad 7 is designed to be smaller than the inner diameter of the bottom basin 4. According to the change in the vertical compression volume of the polyurethane in the vibration-damping pad 7, space for horizontal deformation of the vibration-damping pad is reserved, so that the polyurethane vibration-damping pad has the ability to undergo horizontal deformation and elastic recovery, ensuring that the vibration-damping pad is still smaller than the inner diameter of the bottom basin after horizontal deformation under the maximum vertical load, thereby avoiding the polyurethane being squeezed by the inner wall of the bottom basin, thereby causing the risk of extrusion; similarly, the diameter of the middle hole of the vibration-damping pad 7 is larger than the outer diameter of the bottom basin boss, which also achieves the above-mentioned effect.

[0064] The utility model can reduce the bridge vibration caused by traffic load, as follows:

[0065] The vibration-damping bearing in the utility model is based on the mature structure of the existing railway bridge bearing, and a vibration-damping pad layer 7 is added inside the bearing to achieve vertical vibration reduction by reducing the vertical stiffness of the bearing. The vibration-damping pad layer 7 should have a good vibration reduction effect, high strength, good durability and economy.

[0066] The special support structure design in the utility model can ensure the stable function of the vibration reduction cushion layer.

[0067] The lower part of the support in the utility model is a structure combining embedded and pelvic types, which include an intermediate steel plate 3 and a bottom basin 4. A vibration-damping pad 7 is arranged in the pelvic cavity of the bottom basin 4. The diameter of the vibration-damping pad 7 is smaller than the inner diameter of the pelvic cavity 4, and a horizontal deformation space of the vibration-damping pad 7 is reserved, so that the vibration-damping pad 7 has the ability to undergo horizontal deformation and elastic recovery, thereby reducing the vertical stiffness of ordinary spherical bearings and realizing the vertical vibration reduction function.

[0068] In the utility model, a restraining ring 32 is arranged at the middle steel plate 3 to maintain a reasonable gap with the top surface of the bottom basin 4, and a boss 42 is arranged at the center of the bottom basin 4. The gap between the boss 42 and the bottom surface of the middle steel plate 3 is equal to the gap between the restraining ring 32 and the bottom basin 4. On the one hand, it can prevent the overload protection when the support is subjected to a load exceeding the design load, avoid the vibration-damping cushion layer from being subjected to excessive force and failing, and at the same time ensure that the support height does not continue to decrease, affecting the line operation; on the other hand, by setting a gap change scale, the operating status of the vibration-damping cushion layer can be determined by the gap change, so as to take corresponding measures to deal with it.

[0069] The structure of the vibration-damping pad 7 in the utility model is a three-layer structure, in which the elastomer is located in the middle position. The upper and lower parts thereof are formed as a whole by bonding steel plates, and are arranged in the bottom basin 4. The bottom basin 4 is provided with a sink groove and a vibration-damping pad 7, thereby ensuring that the vibration-damping pad 7 is always in the center of the support, and preventing the vibration-damping pad 7 from sliding to one side and affecting the horizontal deformation ability of the elastomer.

[0070] The utility model adds a vibration-damping cushion layer on the basis of the spherical bearing. The vibration-damping cushion layer is made of an elastomeric material and has many advantages such as strong bearing capacity, good elasticity, excellent anti-aging performance and anti-fatigue performance. At the same time, a sealing device is added to the vibration-damping bearing to prevent the vibration-damping cushion layer from contacting the outside world and ensure its stable vibration-damping function; the overall structure is provided with a constraint ring to ensure the effective height of the bearing and determine the operating condition of the vibration-damping cushion layer.

[0071] Compared with ordinary bearings, the utility model can realize the vertical vibration reduction function and effectively reduce the upper vibration transmitted to the lower foundation. At the same time, compared with the spherical bearings of conventional structures, the shape and height dimensions do not change significantly, and it has obvious economy.

Claims

1. A spherical bearing with vertical vibration reduction function, comprising an upper bearing plate (1), characterized in that: A plane sliding pair is formed between the upper support plate (1) and the spherical cap lining plate (2), a curved sliding pair is formed between the spherical cap lining plate (2) and the middle steel plate (3), a vibration reduction structure is provided between the middle steel plate (3) and the bottom basin (4), and a connecting component is also provided in the bottom basin (4); The vibration-damping structure is a vibration-damping cushion layer (7), the vibration-damping cushion layer (7) being arranged between the middle steel plate (3) and the bottom basin (4), and a containing structure corresponding to the vibration-damping cushion layer (7) being arranged in both the middle steel plate (3) and the bottom basin (4); The vibration-damping cushion layer (7) comprises an upper steel plate (71) located at the upper layer, an elastic vibration-damping cushion (72) located in the middle, and a lower steel plate (74) located at the lower layer.

2. The spherical bearing with vertical vibration reduction function according to claim 1, characterized in that: An upper sinking platform groove (33) is formed at the lower end of the middle steel plate (3); the upper sinking platform groove (33) is a receiving structure in the middle steel plate (3); and the upper sinking platform groove (33) receives the upper steel plate (71).

3. The spherical bearing with vertical vibration reduction function according to claim 2, characterized in that: An annular wall (41) is formed upwardly at the upper end of the bottom basin (4), and a receiving groove is formed inside the annular wall (41), wherein the receiving groove receives the vibration-damping cushion layer (7) and part of the middle steel plate (3).

4. The spherical bearing with vertical vibration reduction function according to claim 3 is characterized in that: A sinking platform groove (43) is formed at the upper end of the bottom basin (4), and the sinking platform groove (43) is a receiving structure in the bottom basin (4), and the sinking platform groove (43) receives the lower steel plate (74).

5. The spherical bearing with vertical vibration reduction function according to claim 4, characterized in that: A deformation gap is formed between the inner wall of the annular wall (41) and the outer wall of the vibration-damping cushion layer (7), providing a deformation space for the vibration-damping cushion layer (7).

6. The spherical bearing with vertical vibration reduction function according to claim 5, characterized in that: An external constraint structure is provided between the middle steel plate (3) and the bottom basin (4), and the external constraint structure performs external constraint in the vibration reduction process.

7. The spherical bearing with vertical vibration reduction function according to claim 6, characterized in that: An internal constraint structure is provided between the middle steel plate (3) and the bottom basin (4), and the internal constraint structure performs internal constraint during the vibration reduction process.

8. The spherical bearing with vertical vibration reduction function according to claim 7, characterized in that: The constraint strokes of the outer constraint and the inner constraint are the same, so the constraints are performed synchronously.

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