Bridge support with elastic restraining function

Abstract

The bridge support with the elastic restraining function comprises a bottom plate, the top of the bottom plate is connected with an upper support plate in a sliding mode, a lower support plate is arranged at the top of the bottom plate, and elastic restraining mechanisms are arranged on the two sides of the lower support plate. According to the device, when the position between the upper support plate and the bottom plate deviates in the length direction of the bridge, the elastic restraining mechanism can apply elastic force to the upper support plate, so that the relative position between the upper support plate and the bottom plate is restored, and the device has the function of stopping continuous displacement after the designed displacement is achieved; meanwhile, the effects of simplifying the mounting process and improving the mounting precision are achieved through the elastic restraining mechanism, and the support can be restrained in the mounting process and in the sliding state in the using state through the elastic restraining mechanism; after the support reaches the adjusting time, the support is integrally adjusted in sequence through the adjusting mechanism, a main body structure does not need to be repeatedly measured, and operation steps are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of bridge bearings, and in particular to a bridge bearing with an elastic constraint function. Background Art

[0002] The bridge bearing is an important structural component connecting the superstructure and substructure of the bridge. It is located between the bridge and the pad stone. It can reliably transfer the load and deformation (displacement and rotation) borne by the superstructure of the bridge to the substructure of the bridge. It is an important force transmission device of the bridge.

[0003] When the bridge is displaced due to thermal deformation, the position of the upper bearing plate of the bridge bearing will also move. However, the current bridge bearing cannot restore the position of the upper bearing plate well when in use, resulting in the change of the position of the bridge and affecting the service life of the bridge. Therefore, it is urgent to design a bridge bearing with elastic constraint function to solve the above problem. Summary of the invention

[0004] The purpose of the present invention is to provide a bridge bearing with elastic constraint function to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A bridge bearing with an elastic constraint function comprises a base plate, the top of which is slidably connected to an upper bearing plate, the top of which is provided with a lower bearing plate, elastic constraint mechanisms are provided on both sides of the lower bearing plate, the elastic constraint mechanisms are used to apply an elastic restoring force to the upper bearing plate, and adjustment mechanisms are provided at both ends of the elastic constraint mechanism, the adjustment mechanisms are used to adjust the position of the upper bearing plate relative to the base plate.

[0007] Furthermore, the adjustment mechanism includes a block fixed to the upper support plate, the elastic constraint mechanism includes a cylinder body, piston shafts are inserted at both ends of the cylinder body, an extrusion cylinder is provided at the end of the piston shaft away from the cylinder body, the extrusion cylinder is movably inserted into the interior of the block, a threaded hole is opened on the outer wall of the block on the side away from the piston shaft, an adjusting screw plug is connected to the internal thread of the threaded hole, the adjusting screw plug is rotatably connected to the extrusion cylinder, and a limiting block is provided on the outside of the piston shaft.

[0008] Furthermore, a spring is arranged inside the extrusion cylinder, one end of the extrusion cylinder away from the adjusting screw plug is slidably connected to a limiting slide, and a rotating ball cover is arranged between the limiting slide and the piston shaft.

[0009] Furthermore, a limiting plate is fixed at one end of the piston shaft, an arc wear-resistant plate matched with the rotating ball cover is fixed on one outer wall of the limiting plate, and a plane wear-resistant plate is fixed on one outer wall of the rotating ball cover close to the limiting slide.

[0010] Furthermore, a guide shaft is arranged inside the cylinder body, an elastic component is arranged outside the guide shaft, and the elastic component is located between the two piston shafts.

[0011] Furthermore, a piston hole is provided inside the cylinder body, and a piston ring is integrally formed at one end of the piston shaft, and the piston ring is located inside the piston hole.

[0012] Furthermore, a receiving hole is provided inside the cylinder body, the elastic component is located inside the receiving hole, limiting rings are provided at both ends of the elastic component, and a cover plate is fixed on the top of the cylinder body.

[0013] Furthermore, a middle support plate is arranged between the upper support plate and the lower support plate, a concave cavity is arranged on the top outer wall of the lower support plate, and the bottom of the support plate is adapted to the concave cavity.

[0014] Furthermore, a guide groove is provided between the cylinder body and the lower support plate, and a guide plate is integrally formed on the bottom outer wall of the upper support plate, and the guide plate is located inside the guide groove.

[0015] Furthermore, the direction in which the elastic restoring force applied by the elastic constraint mechanism is parallel to the length direction of the bridge, and the bottom plate and the lower support plate are integrally formed.

[0016] In the above technical scheme, the present invention provides a bridge bearing with an elastic constraint function, which has the following beneficial effects: in the present invention, when the position between the upper bearing plate and the bottom plate is offset in the length direction of the bridge, the elastic constraint mechanism can apply elastic force to the upper bearing plate, so that the relative position between the upper bearing plate and the bottom plate is restored, and has the function of preventing further displacement after reaching the designed displacement. At the same time, the elastic constraint mechanism simplifies the installation process and improves the installation accuracy. The elastic constraint mechanism can make the bearing constrained during installation and in a sliding state during use. After the bearing reaches the adjustment time, it is adjusted as a whole in sequence through the adjustment mechanism without repeatedly measuring the main structure, thereby reducing the number of operating steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure of an embodiment of a bridge bearing with elastic constraint function provided by the present invention.

[0019] Figure 2 A schematic diagram of the structure of an elastic constraint mechanism provided for an embodiment of a bridge bearing with elastic constraint function of the present invention.

[0020] Figure 3 A schematic diagram of a concave cavity structure provided for an embodiment of a bridge bearing with elastic constraint function of the present invention.

[0021] Figure 4 A schematic diagram of the structure of a middle bearing plate provided for an embodiment of a bridge bearing with elastic constraint function according to the present invention.

[0022] Figure 5 An enlarged structural schematic diagram of point A provided for an embodiment of a bridge bearing with elastic constraint function of the present invention.

[0023] Figure 6 A schematic diagram of a baffle structure provided for an embodiment of a bridge bearing with elastic constraint function of the present invention.

[0024] Figure 7 A schematic diagram of the lower bearing plate structure provided for an embodiment of a bridge bearing with elastic constraint function of the present invention.

[0025] Figure 8 An enlarged structural schematic diagram of point B provided for an embodiment of a bridge bearing with elastic constraint function of the present invention.

[0026] Description of reference numerals:

[0027] 1 bottom plate, 2 upper support plate, 3 elastic constraint mechanism, 4 adjustment mechanism, 5 piston shaft, 6 piston ring, 7 guide shaft, 8 elastic component, 9 rotating ball cover, 10 lower support plate, 11 guide groove, 12 guide plate, 13 cover plate, 14 concave cavity, 15 block, 16 threaded hole, 17 adjusting screw plug, 18 extrusion cylinder, 19 limiting slide plate, 20 arc wear-resistant plate, 21 flat wear-resistant plate, 22 spring, 23 middle support plate, 24 limiting disk, 25 cylinder body, 26 piston hole, 27 accommodating hole, 28 limiting ring, 29 baffle, 30 gasket, 31 extrusion bolt, 32 limiting block. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Example 1

[0030] like Figure 1-5As shown, a bridge bearing with an elastic constraint function provided by an embodiment of the present invention is installed between a bridge and a pier. The bridge here is the main beam of the bridge, including a bottom plate 1, which is fixed to the pier. An upper support plate 2 is slidably connected to the top of the bottom plate 1, and the upper support plate 2 is fixed to the main beam. A lower support plate 10 is arranged on the top of the bottom plate 1. In this embodiment, the bottom plate 1 and the lower support plate 10 are integrally formed, and a certain displacement can be generated between the upper support plate 2 and the lower support plate 10 to meet the deformation of the upper structure. Elastic constraint mechanisms 3 are arranged on both sides of the lower support plate 10, and the two elastic constraint mechanisms 3 are symmetrically arranged on both sides of the lower support plate 10. The direction in which the elastic restoring force applied by the constraint mechanism 3 is parallel to the length direction of the bridge. The elastic constraint mechanism 3 is used to apply the elastic restoring force to the upper support plate 2, so that after the upper support plate 2 is displaced, the elastic constraint mechanism 3 can restore it to an initial state close to that when it was installed. Adjustment mechanisms 4 are provided at both ends of the elastic constraint mechanism 3. The adjustment mechanism 4 is used to adjust the position of the upper support plate 2 relative to the base plate 1. The direction in which the adjustment mechanism 4 adjusts the upper support plate 2 is parallel to the length direction of the bridge. The adjustment mechanism 4 includes a stopper 15 fixed to the upper support plate 2. In this embodiment, the adjustment mechanism 4 is located inside the stopper 15. Each of the elastic constraint mechanisms 3 has a stopper at both ends. Block 15, the elastic constraint mechanism 3 includes a cylinder body 25, the cylinder body 25 is hollow inside, and the cylinder body 25 is fixed to the lower support plate 10, the piston shaft 5 is inserted at both ends of the cylinder body 25, and the end of the piston shaft 5 away from the cylinder body 25 is provided with an extrusion cylinder 18, and the extrusion cylinder 18 is movably inserted in the interior of the block 15, and the outer wall of the side of the block 15 away from the piston shaft 5 is provided with a threaded hole 16, and the internal thread of the threaded hole 16 is connected with an adjusting screw plug 17, and the outer wall of the side of the adjusting screw plug 17 away from the piston shaft 5 has a hexagonal hole, so that the adjusting screw plug 17 can be rotated by a hexagonal wrench, and the adjusting screw plug 17 is rotatably connected with the extrusion cylinder 18. When the adjusting screw plug 17 is rotated, The adjusting screw plug 17 can drive the extrusion cylinder 18 and the piston shaft 5 to generate an extrusion force, thereby causing the piston shaft 5 to move inside the cylinder body 25. A limit block 32 is provided on the outside of the piston shaft 5. The limit block 32 is located between the limit plate 24 and the cylinder body 25. The limit block 32 can be removed from the outside of the piston shaft 5. The limit block 32 is used to achieve the locking effect of the elastic constraint mechanism 3. After the support is installed, the limit block 32 needs to be removed. The system conversion method is adopted to make the elastic constraint mechanism in a constrained state when installed and in a sliding state when in use, thereby completing the system conversion of the upper structure under construction and operation.A spring 22 is arranged inside the extrusion cylinder 18, and one end of the extrusion cylinder 18 away from the adjusting screw plug 17 is slidably connected to the limiting slide 19, and the limiting slide 19 can slide along the axial direction of the extrusion cylinder 18, and a rotating ball cover 9 is arranged between the limiting slide 19 and the piston shaft 5, and one side of the rotating ball cover 9 is a plane, and the other side is a spherical surface, and a limiting disk 24 is fixed at one end of the piston shaft 5, and an arc wear-resistant plate 20 adapted to the rotating ball cover 9 is fixed on one side of the outer wall of the limiting disk 24, and a plane wear-resistant The spring 22 applies elastic force to the limit slide 19, so that the spring 22 can effectively make the limit slide 19, the rotating ball cover 9 and the limit plate 24 in close contact. When the bridge changes in position, the limit slide 19, the rotating ball cover 9 and the limit plate 24 will not be separated. A spherical rotating surface and a flat sliding surface are set between the piston shaft 5 and the limit slide 19, which can meet the rotation of the support or vertical sliding along the elastic constraint mechanism 3, so that the center of the elastic constraint mechanism 3 does not change due to the rotation or sliding of the support. ;

[0031] Furthermore, a guide shaft 7 is provided inside the cylinder body 25, and an elastic component 8 is provided outside the guide shaft 7. The elastic component 8 is preferably a butterfly spring. The elastic component 8 is located between the two piston shafts 5. The end of the piston shaft 5 is inserted into the guide shaft 7, and the elastic component 8 is used to apply elastic force to the piston shaft 5; a piston hole 26 is provided inside the cylinder body 25, and a piston ring 6 is integrally formed at one end of the piston shaft 5. The piston ring 6 is located inside the piston hole 26, and the piston ring 6 can slide along the piston hole 26; a receiving hole 27 is provided inside the cylinder body 25, and the guide shaft 7 and the receiving hole 27 are provided inside the cylinder body 25. The axes of the guide shaft 7 and the piston hole 26 are the same, and the diameter of the piston hole 26 is smaller than the accommodating hole 27. At the same time, the diameter of the guide shaft 7 is smaller than the piston hole 26. The elastic component 8 is located inside the accommodating hole 27. Limiting rings 28 are provided at both ends of the elastic component 8. The limiting rings 28 make the force between the elastic component 8 and the piston shaft 5 more uniform. A cover plate 13 is fixed on the top of the cylinder body 25, and the interior of the cylinder body 25 is filled with lubricating and rust-proof media; the cover plate 13 and the cylinder body 25 are provided with sealing members to improve the service life of the device; the cover plate 13 and the cylinder body 25 are pre-tightened by bolts after being buckled together, and when maintenance is required First, the adjusting screw plug 17 is rotated to make the extrusion cylinder 18 retract into the stopper 15. At this time, the elastic force between the piston shaft 5 and the elastic component 8 becomes weak. Then, after removing the upper cover plate 13, the filling medium is cleaned and the guide shaft 7 elastic component 8 is taken out. After repairing and replacing the damaged elastic component 8, it is reinstalled and filled with the medium and then sealed, so that the bearing is easy to repair, and there is no need to replace the entire bearing, which can effectively save the cost of replacing the bearing, making the maintenance cost of the bearing lower and more efficient. A middle bearing is provided between the upper bearing plate 2 and the lower bearing plate 10. The seat plate 23, the bottom outer wall of the middle support plate 23 has a spherical surface, and the top and bottom of the middle support plate 23 are both provided with wear-resistant plates, so that the middle support plate 23 has a wear-resistant effect, the top outer wall of the lower support plate 10 is provided with a concave cavity 14, the bottom of the support plate is adapted to the concave cavity 14, a guide groove 11 is provided between the cylinder body 25 and the lower support plate 10, and the bottom outer wall of the upper support plate 2 is integrally formed with a guide plate 12, the guide plate 12 is located inside the guide groove 11, and the guide plate 12 and the guide groove 11 are used to provide a guiding effect for the sliding between the upper support plate 2 and the lower support plate 10;

[0032] The specific steps of adjusting the support in this embodiment are as follows:

[0033] A limit block 32 is installed between the cylinder body 25 and the piston shaft 5, and the thickness of the limit block 32 is equal to the designed displacement of the elastic constraint mechanism 3;

[0034] The lower support plate 10 is a non-sliding integral structure. A guide hole and a threaded hole 16 are provided in the block 15 at the bottom of the upper support plate 2. The adjusting screw plug 17 and the extrusion cylinder 18 are installed in the block 15, and the tail of the limiting slide 19 is inserted into the extrusion cylinder 18, wherein: the limiting slide 19 is in contact with the rotating ball cover 9, a low-rigidity spring 22 is installed in the extrusion cylinder 18, and then the adjusting screw plug 17 is pre-installed.

[0035] During the initial pre-installation of the adjusting screw plug 17, only the spring 22 is squeezed, and the gap between the adjusting screw plug 17 and the extrusion cylinder 18 is larger than the support adjustment gap, so that there is an initial elastic force between the adjusting screw plug 17, the extrusion cylinder 18, the limiting slide plate 19 and the rotating ball cover 9, ensuring that the above components are not separated during the installation process; it also ensures that the upper support plate 2 and the upper structure can freely adjust their position.

[0036] When the adjustment time is reached, the adjusting screw plug 17 is further screwed into the stopper until it contacts the extrusion cylinder 18, and then the limiting block 32 is removed, so that the support completes the system conversion.

[0037] Example 2

[0038] like Figure 6-8 As shown, an embodiment of the present invention provides a bridge bearing with an elastic constraint function. The difference between this embodiment and embodiment 1 is that the adjustment mechanism can also be an external adjustment mechanism, that is, the adjustment mechanism is not inside the stopper 15. Specifically, the external adjustment mechanism includes a baffle 29 fixed to the bottom plate, and the baffle 29 has two baffles located on both sides of the lower support plate 10. The lower support plate 10 is placed on the bottom plate 1, that is, the lower support plate 10 can slide between the bottom plate 1, and an adjustment gap is reserved between the baffle 29 and the lower support plate 10. The plate 29 has a gasket 30 on one side close to the support seat, and there are multiple gaskets 30. The baffle plate 29 has an extrusion bolt 31 inside. The gasket 30 is extruded by the extrusion bolt 31, so that the lower support plate 10 changes from a sliding state to a fixed state. By changing the number of gaskets 30 on both sides of the lower support plate 10, the position of the lower support plate 10 on the bottom plate 1 can be adjusted. Since the cylinder body 25 is fixed to the lower support plate 10, the position of the cylinder body 25 is changed when the lower support plate 10 moves.

[0039] The specific steps of adjusting the support in this embodiment are as follows:

[0040] A limit block 32 is installed between the cylinder body 25 and the piston shaft 5, and the thickness of the limit block 32 is equal to the designed displacement of the elastic constraint mechanism 3;

[0041] The lower support plate 10 adopts a slidable structure, and the locking and limiting gasket 30 is not installed during the support installation process, so that the upper support plate 2 and the bottom plate 1 are constrained by the limiting block 32, and the lower support plate 10 and the bottom plate 1 can produce a certain displacement;

[0042] When the adjustment time is reached, the gasket 30 is first installed to make the lower support plate 10 and the baffle 29 close to each other and no longer move; while tightening the extrusion bolt 31, the limit block 32 is removed to consolidate the lower support plate 10 and the bottom plate 1, and the upper support plate 2 and the lower constraint are released, completing the system conversion;

[0043] Finally, measure the distance between the baffle 29 and the middle support plate 23, and adjust the gap by adjusting the number of gaskets 30 between the baffle 29 and the middle support plate 23. After the adjustment is completed, tighten the extrusion bolts 31 so that the gaskets 31 and the baffle 29 are clamped.

[0044] Working principle: When it is necessary to lock the elastic constraint mechanism 3, the limit block 32 is matched with the piston shaft 5, and the limit block 32 is located between the limit plate 24 and the cylinder body 25, so that the locking effect of the elastic constraint mechanism 3 can be achieved; when it is necessary to adjust the relative position between the base plate 1 and the upper support plate 2, the adjusting screw plug 17 at one end of the elastic constraint mechanism 3 is rotated so that the extrusion cylinder 18 squeezes the piston shaft 5 at one end of the cylinder body 25, so that the piston shaft 5 at this location is retracted into the interior of the cylinder body 25, so that the position of the upper support plate 2 on the base plate 1 can be changed.

[0045] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A bridge bearing with elastic constraint function, characterized in that: The invention comprises a base plate (1), the top of which is slidably connected to an upper support plate (2), the top of which is provided with a lower support plate (10), elastic restraint mechanisms (3) are provided on both sides of the lower support plate (10), the elastic restraint mechanisms (3) are used to apply an elastic restoring force to the upper support plate (2), and adjustment mechanisms (4) are provided at both ends of the elastic restraint mechanisms (3), the adjustment mechanisms (4) are used to adjust the position of the upper support plate (2) relative to the base plate (1).

2. A bridge bearing with elastic constraint function according to claim 1, characterized in that: The adjustment mechanism (4) comprises a stopper (15) fixed to the upper support plate (2); the elastic restraint mechanism (3) comprises a cylinder body (25); piston shafts (5) are inserted at both ends of the cylinder body (25); an extrusion cylinder (18) is provided at one end of the piston shaft (5) away from the cylinder body (25); the extrusion cylinder (18) is movably inserted into the interior of the stopper (15); a threaded hole (16) is provided on the outer wall of the side of the stopper (15) away from the piston shaft (5); an adjusting screw plug (17) is threadedly connected to the inner part of the threaded hole (16); the adjusting screw plug (17) is rotatably connected to the extrusion cylinder (18); and a limit block (32) is provided on the outside of the piston shaft (5).

3. The bridge bearing with elastic constraint function according to claim 2, characterized in that: A spring (22) is arranged inside the extrusion cylinder (18), and one end of the extrusion cylinder (18) away from the adjusting screw plug (17) is slidably connected to a limiting slide plate (19), and a rotating ball cover (9) is arranged between the limiting slide plate (19) and the piston shaft (5).

4. The bridge bearing with elastic constraint function according to claim 3, characterized in that: A limiting plate (24) is fixed to one end of the piston shaft (5), an arc wear-resistant plate (20) adapted to the rotating ball cover (9) is fixed to one outer wall of the limiting plate (24), and a plane wear-resistant plate (21) is fixed to one outer wall of the rotating ball cover (9) close to the limiting slide plate (19).

5. The bridge bearing with elastic constraint function according to claim 2, characterized in that: A guide shaft (7) is arranged inside the cylinder body (25), an elastic component (8) is arranged outside the guide shaft (7), and the elastic component (8) is located between the two piston shafts (5).

6. The bridge bearing with elastic constraint function according to claim 5, characterized in that: A piston hole (26) is provided inside the cylinder body (25), and a piston ring (6) is integrally formed at one end of the piston shaft (5), and the piston ring (6) is located inside the piston hole (26).

7. The bridge bearing with elastic constraint function according to claim 5, characterized in that: The cylinder body (25) is provided with a receiving hole (27) inside, the elastic component (8) is located inside the receiving hole (27), limiting rings (28) are provided at both ends of the elastic component (8), and a cover plate (13) is fixed on the top of the cylinder body (25).

8. The bridge bearing with elastic constraint function according to claim 1, characterized in that: A middle support plate (23) is arranged between the upper support plate (2) and the lower support plate (10), a concave cavity (14) is arranged on the top outer wall of the lower support plate (10), and the bottom of the support plate is adapted to the concave cavity (14).

9. The bridge bearing with elastic constraint function according to claim 1, characterized in that: A guide groove (11) is provided between the cylinder body (25) and the lower support plate (10), and a guide plate (12) is integrally formed on the bottom outer wall of the upper support plate (2), and the guide plate (12) is located inside the guide groove (11).

10. The bridge bearing with elastic constraint function according to claim 1, characterized in that: The direction in which the elastic restoring force applied by the elastic restraining mechanism (3) is parallel to the length direction of the bridge, and the bottom plate (1) and the lower support plate (10) are integrally formed.

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