A tension and compression elastic support

Abstract

The present invention discloses a tension and compression elastic bearing, comprising an upper seat plate and a lower seat plate, a support sleeve and a support plate are sequentially arranged between the upper seat plate and the lower seat plate, the support plate is arranged on the lower seat plate, an elastic body is arranged on the support plate, the support sleeve is a sleeve-shaped structure with one end open, the open end of the support sleeve is arranged downward, and the support plate and the elastic body cover are arranged in the support sleeve, the upper seat plate is arranged on the support sleeve, a connecting component is arranged between the upper seat plate, the support sleeve and the support plate, and the two ends of the connecting component are respectively connected to the upper seat plate and the support plate, and a limiting component is arranged between the lower seat plate and the support sleeve, and the limiting component connects the lower seat plate and the support sleeve, and is used to limit the movement of the support sleeve toward the upper side of the lower seat plate. The overall structural layout of the bearing is simple, and it has the performance of bearing pressure, tension, and large vertical displacement and horizontal displacement, and can meet the requirements of large suspension bridges and cable-stayed bridges for bearing performance.

Description

Technical Field

[0001] The invention relates to the technical field of bridge bearings, and in particular to a tension-compression elastic bearing. Background Art

[0002] The bridge bearings used in bridge construction include plate rubber bearings, pot rubber bearings and spherical bearings, but the existing ordinary bearings often cannot meet the composite displacement requirements of large suspension bridges and cable-stayed bridges; these two types of bridges require the bearings to have the ability to bear pressure, tension, and large vertical and horizontal displacements during use.

[0003] Chinese invention patent CN102261037A discloses a vertical elastic tension and compression support, in which a compression damper and a tension damper are respectively arranged, so that the support has the ability to bear tension, pressure and large vertical displacement at the same time. However, since two dampers are arranged in the support, the overall structure size of the support is large and the occasions of use are limited.

[0004] According to the rapid development of transportation in my country, more and more large suspension bridges and cable-stayed bridges will inevitably appear in the future. With the continuous advancement of bridge design and construction technology, higher requirements are placed on bearing performance parameters and structural dimensions. Summary of the invention

[0005] The purpose of the present invention is to solve the technical problems existing in the prior art and to provide a tension-compression elastic bearing with a simple overall structural layout and the ability to bear pressure, tension and large vertical and horizontal displacements.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0007] The support frame is an upper frame and a lower frame, and the support frame is a bottom frame, and the support frame is a bottom frame, and a spacer is arranged between the support frame and the bottom frame.

[0008] In the above technical solution, further, the connecting assembly includes a tension bolt and a locking nut threadedly connected to the tension bolt, the support plate, elastomer, support sleeve and upper seat plate are sequentially sleeved on the tension bolt, one end of the tension bolt is connected to the support plate, and the other end extends to the upper seat plate, the locking nut is arranged at one end of the tension bolt extending from the upper seat plate, and the upper seat plate is fixed on the support sleeve.

[0009] In the above technical solution, further, the support plate is provided with a limiting cavity cooperating with the head of the tension bolt, and the head of the tension bolt is arranged in the limiting cavity.

[0010] In the above technical solution, further, the support plate and the tension bolts are an integrated structure.

[0011] In the above technical solution, further, the limit assembly includes a limit baffle plate arranged on the left and right sides of the lower seat plate and a pressure plate arranged on the limit baffle plate, one end of the pressure plate is fixedly arranged on the limit baffle plate, and the other end is arranged toward the inner side of the limit baffle plate, and a limit boss is formed on the inner side of the limit baffle plate. The support sleeve is provided with a limit flange protruding from the outer wall of the support sleeve on one side of the opening end, and the limit flange is located between the pressure plate and the lower seat plate, and is arranged in coordination with the limit boss.

[0012] In the above technical solution, further, the lower end surface of the upper seat plate is an outer convex spherical surface, the upper end surface of the support sleeve is an inner concave spherical surface matching the lower end surface of the upper seat plate, and a wear-resistant plate I is arranged between the upper seat plate and the support sleeve.

[0013] In the above technical solution, further, a clearance cavity is provided on the upper portion of the upper seat plate, and the locking nut is arranged in the clearance cavity.

[0014] In the above technical solution, further, the bottom of the give way cavity is an inner concave spherical surface, the end surface of the locking nut matching with the bottom of the give way cavity is an outer convex spherical surface, and a wear-resistant plate II is arranged between the locking nut and the upper seat plate.

[0015] In the above technical solution, further, a wear-resistant plate III is provided between the support plate and the lower seat plate.

[0016] In the above technical solution, further, a sealing ring is arranged between the end surface of one end of the opening of the support sleeve and the lower seat plate, and between the support sleeve and the upper seat plate.

[0017] The beneficial effects of the present invention are:

[0018] 1) In the present invention, an elastic body is arranged in the tension and compression elastic support, so that the support can have the performance of bearing tension, pressure and large vertical displacement, making the overall structure of the support simpler and the structural setting reasonable, so that it has better applicability.

[0019] 2) The bearing in the present invention can be displaced within a certain range when subjected to tension and left-right forces without causing the bridge to be in an empty state. While bearing a large vertical displacement, it can also withstand horizontal left-right swing displacement and a certain angle of rotation, thus meeting the requirements of large suspension bridges and cable-stayed bridges for bearing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention.

[0021] In the figure: 1. upper seat plate, 2. lower seat plate, 3. support sleeve, 4. support plate, 5. elastic body, 6. tension bolt, 7. locking nut, 8. limit baffle, 9. pressure plate, 10. limit flange, 11. wear-resistant plate I, 12. clearance cavity, 13. wear-resistant plate II, 14. wear-resistant plate III, 15. sealing ring. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] like Figure 1 As shown, the tension and compression elastic support in this embodiment includes an upper seat plate 1 and a lower seat plate 2, and a support sleeve 3 and a support plate 4 are arranged between the upper seat plate 1 and the lower seat plate 2 in sequence. The support plate 4 is arranged on the lower seat plate 2, and an elastic body 5 is arranged on the support plate 4. The support sleeve 3 is a sleeve-shaped structure with one end open. The open end of the support sleeve 3 is arranged downward to cover the support plate 4 and the elastic body 5 in the support sleeve. The elastic body 5 supports the support sleeve 3, and the support sleeve is arranged above the lower seat plate, and a certain distance is set between the end surface of the open end of the support sleeve 3 and the lower seat plate. The upper seat plate 2 is arranged on the support sleeve 3, and a connecting component is arranged between the upper seat plate 2, the support sleeve 3 and the support plate 4. The two ends of the connecting component are connected to the upper seat plate 2 and the support plate 4 respectively. At least one of the connecting structures between the connecting component and the upper seat plate and the support plate is a movable connection, and the upper seat plate 2 is fixedly arranged on the support sleeve 4. The movable connection structure here is a structure that can realize the connection between the upper seat plate and the support plate, so that when the upper seat plate is subjected to an upward pulling force, the upper seat plate can drive the support plate to move upward through the connecting assembly, and when the upper seat plate is subjected to a downward pressure, the upper seat plate moves downward, while the support plate and the connecting assembly do not move. A limit assembly is provided between the lower seat plate 2 and the support sleeve 3, and the limit assembly connects the lower seat plate 2 and the support sleeve 3 to limit the movement of the support sleeve toward the upper side of the lower seat plate.

[0024] Here, the limit assembly is used to realize the movable connection between the support sleeve and the lower seat plate. When the support is subjected to downward pressure, since the support sleeve is set on the elastomer, when the elastomer undergoes elastic deformation, the support sleeve moves downward relative to the lower seat plate; and when the upper seat plate of the support is subjected to an upward force, the support sleeve is also subjected to an upward force. At this time, it is necessary to limit the upward movement of the support sleeve. Therefore, the limit assembly arranged between the support sleeve and the lower seat plate here needs to realize the movable connection between the support sleeve and the base, and at the same time limit the movement of the support sleeve toward the upper direction of the lower seat plate.

[0025] Specifically, the connection assembly in this embodiment includes a tension bolt 6 and a locking nut 7 threadedly connected to the tension bolt. The support plate 4, the elastic body 5, the support sleeve 3 and the upper seat plate 1 are sequentially sleeved on the tension bolt 3. One end of the tension bolt 6 is connected to the support plate 4, and the other end extends to the upper seat plate 1. The locking nut 7 is arranged at the end of the tension bolt 6 extending from the upper seat plate, and the upper seat plate 2 is fixedly arranged on the support sleeve 3. The connection between the upper seat plate and the support plate can be realized by using the tension bolt and the locking nut, and the use of this connection structure can realize the movable connection between the connection assembly and the upper seat plate and the support plate.

[0026] Preferably, a limiting cavity cooperating with the head of the tension bolt is provided on the support plate 4, and the head of the tension bolt is arranged in the limiting cavity. The tension bolt is movably connected with the support plate, and a limiting cavity cooperating with the head of the tension bolt is provided on the support plate to arrange the head of the tension bolt, so as to prevent the head of the tension bolt from protruding out of the support plate, and facilitate the arrangement of the tension bolt in the support.

[0027] Likewise, in this embodiment, the support plate 4 and the tension bolts 6 can be configured as an integrated structure.

[0028] The limiting assembly in this embodiment includes limiting baffles 8 arranged on the left and right sides of the lower seat plate 2 and a pressing plate 9 arranged on the limiting baffles. One end of the pressing plate 9 is fixedly arranged on the upper end surface of the limiting baffle 8, and the other end is arranged toward the inner side of the limiting baffle, forming a limiting boss on the inner side of the limiting baffle. At the same time, the support sleeve 3 is provided with a limiting flange 10 protruding from the outer wall of the support sleeve on one side of the opening end. The limiting flange 10 is located between the pressing plate 9 and the lower seat plate 2, and the limiting flange is arranged in coordination with the limiting boss. The limiting boss structure formed by the limiting baffle and the pressing plate can limit the limiting boss, and by limiting the upward movement of the limiting flange, the movable connection between the support sleeve and the lower seat plate is realized; while limiting the movement of the support sleeve to the upper side of the lower seat plate, it will not affect the downward movement of the support sleeve. At the same time, since the limit baffles are arranged on both sides of the limit flange and the pressure plates on both sides are located on the outside of the support sleeve, the limit baffles and the pressure plates simultaneously play a role in limiting the left and right movement of the support sleeve, so that the support sleeve can move left and right along the lower seat plate but will not fall off the lower seat plate, so that the support can withstand a certain horizontal load.

[0029] When the upper seat plate is subjected to an upward pulling force, the upper seat plate drives the limit plate to move upward under the action of the connecting assembly. At this time, since the support sleeve is connected to the lower seat plate through the limit assembly, the support sleeve is fixed relative to the lower seat plate. When the limit plate moves upward, it exerts pressure on the elastic body to deform the elastic body, thereby providing the upper seat plate with upward displacement space in the vertical direction, so that the bearing can withstand the upward movement of the bridge in the vertical direction.

[0030] When the upper seat plate is subjected to downward pressure, the upper seat plate drives the support sleeve to move downward. The support sleeve exerts a downward force on the elastomer to deform the elastomer, providing downward displacement space in the vertical direction for the upper seat plate, so that the bearing can withstand the downward movement of the bridge in the vertical direction.

[0031] In this embodiment, the lower end surface of the upper seat plate 1 is an outer convex spherical surface, and the upper end surface of the support sleeve 3 is an inner concave spherical surface matched with the lower end surface of the upper seat plate. A wear-resistant plate Ⅰ11 is arranged between the upper seat plate 1 and the support sleeve 3. Since the upper seat plate and the support sleeve are movably connected, the connecting end surface between the upper seat plate and the support sleeve is set as a spherical surface. When the bridge is subjected to a lateral force, the upper seat plate can swing and rotate accordingly on the support, so that the support can withstand the lateral load. A wear-resistant plate Ⅰ12 is arranged between the upper seat plate 1 and the support sleeve 3, so that a friction pair is formed between the upper seat plate and the support sleeve to realize relative swinging and rotating motion between the two.

[0032] Preferably, a clearance cavity 12 is provided on the upper part of the upper seat plate 1, and the locking nut 7 is provided in the clearance cavity 12. The bottom of the clearance cavity 12 is an inner concave spherical surface, and the end surface of the locking nut 7 that cooperates with the bottom of the clearance cavity is an outer convex spherical surface, and a wear-resistant plate II 13 is provided between the locking nut and the upper seat plate. The wear-resistant plate II 13 is provided between the locking nut and the upper seat plate, so that a friction pair is formed between the locking nut and the upper seat plate to facilitate the swinging and rotating movement of the upper seat plate on the support sleeve.

[0033] A wear-resistant plate III 14 is arranged between the support plate 4 and the lower seat plate 2. A friction pair is formed between the support plate and the lower seat plate. When the upper seat plate is subjected to a horizontal force, the upper seat plate drives the support plate to move left and right in the lower seat plate under the action of the horizontal force, so that the bearing can withstand the horizontal displacement of the bridge.

[0034] A sealing ring 15 is provided between the end surface of the opening of the support sleeve 3 and the lower seat plate 2. A sealing ring 15 is provided between the support sleeve 3 and the upper seat plate 1. By providing the sealing ring, the friction pair on the support is dustproof, the use effect of the friction pair is ensured, and the service life of the support can be extended.

[0035] The specification and drawings of the present invention are considered to be illustrative rather than restrictive. On the basis of the present invention, those skilled in the art can make some substitutions and modifications to some of the technical features according to the disclosed technical content without creative labor, all of which are within the protection scope of the present invention.

Claims

1. A tension and compression elastic support, characterized in that: The support plate is provided with a plurality of support members, each of which is provided with a plurality of support members, and the plurality of support members are provided with a plurality of support members. The connecting assembly includes a tension bolt and a locking nut threadedly connected to the tension bolt, the support plate, the elastic body, the support sleeve and the upper seat plate are sequentially sleeved on the tension bolt, one end of the tension bolt is connected to the support plate, and the other end extends to the upper seat plate, and the locking nut is arranged at the end of the tension bolt extending from the upper seat plate, and the upper seat plate is fixedly arranged on the support sleeve; The limiting assembly includes limiting baffles arranged on the left and right sides of the lower seat plate and a pressure plate arranged on the limiting baffle. One end of the pressure plate is fixedly arranged on the limiting baffle, and the other end is arranged toward the inner side of the limiting baffle. A limiting boss is formed on the inner side of the limiting baffle. A limiting flange protruding from the outer wall of the supporting sleeve is arranged on one side of the opening end of the supporting sleeve. The limiting flange is located between the pressure plate and the lower seat plate, and is arranged in cooperation with the limiting boss.

2. The tension and compression elastic support according to claim 1, characterized in that: The support plate is provided with a limiting cavity matched with the head of the tension bolt, and the head of the tension bolt is arranged in the limiting cavity.

3. The tension and compression elastic support according to claim 1, characterized in that: The support plate and the tension bolts are an integrated structure.

4. The tension and compression elastic support according to claim 1, characterized in that: The lower end surface of the upper seat plate is an outer convex spherical surface, and the upper end surface of the support sleeve is an inner concave spherical surface matched with the lower end surface of the upper seat plate. A wear-resistant plate I is arranged between the upper seat plate and the support sleeve.

5. The tension and compression elastic support according to claim 1 or 4, characterized in that: A clearance cavity is arranged at the upper part of the upper seat plate, and a locking nut is arranged in the clearance cavity.

6. The tension and compression elastic support according to claim 5, characterized in that: The bottom of the give-way cavity is an inner concave spherical surface, the end surface of the locking nut matching the bottom of the give-way cavity is an outer convex spherical surface, and a wear-resistant plate II is arranged between the locking nut and the upper seat plate.

7. The tension and compression elastic support according to claim 1, characterized in that: A wear-resistant plate III is arranged between the support plate and the lower seat plate.

8. The tension and compression elastic support according to claim 1, characterized in that: A sealing ring is arranged between the end surface of one end of the support sleeve opening and the lower seat plate, and between the support sleeve and the upper seat plate.

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