Bridge support for damping and buffering

Abstract

The utility model discloses a bridge support for damping and buffering, which comprises a lower base connected with a bridge abutment and an upper base connected with an upper structure of a bridge, the upper base and the lower base are correspondingly arranged, a movable upper rotating seat and a movable lower rotating seat are respectively arranged on the upper base and the lower base, and the upper rotating seat and the lower rotating seat are arranged on the upper rotating seat and the lower rotating seat respectively. The upper rotating seat is in ball sliding contact fit with the lower rotating seat; an upper damping rod and a lower damping rod are arranged between the upper base and the lower base; and inner damping rods are arranged in the upper base and the lower base. The damping device has the beneficial effects that stress at different angles can be buffered and absorbed more efficiently under the combined action of buffering supporting of the upper damping rod and the lower damping rod, ball sliding fit of the upper rotating seat and the lower rotating seat and torsional force supporting of the inner damping rod, and therefore the structural stability and safety of a bridge are guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of bridge bearings, and particularly relates to a bridge bearing for shock absorption and buffering. Background Art

[0002] Bridge bearings are crucial components in bridge structures. They are mainly used to connect the upper and lower structures of bridges. Through bridge bearings, the loads on the bridges can be effectively dispersed, concentrated stresses can be reduced, and local overloading of the structure can be prevented. The main function of bridge bearings is to support the weight of the bridge and transfer the loads to the foundation, while allowing the bridge to perform necessary movements and deformations under temperature changes and loads. The bearings ensure the overall stability and safety of the bridge by bearing and distributing the loads.

[0003] Comparing with the utility model document with the publication number of CN205443922U, this patent discloses a bridge bearing, which includes a bridge pier, a base, a lower bottom plate, an upper bottom plate and a steel lining plate. A plurality of fixing columns are provided at the bottom of the base, and a plurality of positioning pins are provided around the bottom of the base. The base is cast and fixed on the bridge pier. A plurality of bolt holes are provided at the top of the base. The lower bottom plate is fixed on the base by bolts. The steel lining plate is arranged between the lower bottom plate and the upper bottom plate, and a shock pad is also provided between the steel lining plate and the lower bottom plate. A plurality of vertical lower shock-absorbing shafts are provided around the top surface of the lower bottom plate, and corresponding upper shock-absorbing shafts are provided around the bottom surface of the upper bottom plate. Springs are sleeved on the corresponding upper shock-absorbing shafts and lower shock-absorbing shafts.

[0004] The above patent can only respond to the loads in the longitudinal direction. When multiple vehicles are driving on the bridge deck at the same time, the vibration directions will become more complex. The driving of these vehicles will cause a series of vertical vibrations, lateral vibrations and torsional vibrations on the bridge deck. The above structural solution cannot effectively absorb the forces generated by the structural torsional effect.

[0005] Therefore, providing a bridge bearing for shock absorption and buffering has become a problem worthy of research. Summary of the Utility Model

[0006] In order to solve the deficiencies existing in the above-mentioned prior art, the purpose of the present utility model is to use the combined action of the buffer support of the upper damping rod and the lower damping rod, the spherical sliding fit of the upper rotating seat and the lower rotating seat, and the torsional force support of the inner damping rod, so as to buffer and absorb the stresses at different angles more efficiently, thereby ensuring the structural stability and safety of the bridge.

[0007] The purpose of the present utility model is achieved as follows:

[0008] A bridge bearing for shock absorption and buffering provided by the utility model comprises a lower base connected to a bridge pier and an upper base connected to an upper structure of the bridge. Among them, the upper base and the lower base are arranged correspondingly. An active upper rotating seat and an active lower rotating seat are respectively arranged on the upper base and the lower base, and the upper rotating seat and the lower rotating seat are in ball-sliding contact and cooperation;

[0009] An upper damping rod and a lower damping rod are arranged between the upper base and the lower base to assist the upper rotating seat and the lower rotating seat to buffer and reset along the longitudinal axis; inner damping rods are arranged inside the upper base and the lower base respectively to assist the upper rotating seat and the lower rotating seat to twist and buffer.

[0010] Furthermore, upper sliding grooves and lower sliding grooves are respectively arranged on the facing surfaces of the upper base and the lower base. The upper rotating seat comprises an upper sliding base block and an upper inner base. The upper inner base is connected to the inside of the upper sliding groove through sliding and rotating cooperation, and its outer end passes through the upper sliding groove and is connected to the upper sliding base block. The lower rotating seat comprises a lower sliding base block and a lower inner base. The lower inner base is connected to the inside of the upper sliding groove through sliding and rotating cooperation, and its outer end passes through the upper sliding groove and is connected to the lower sliding base block corresponding to the upper sliding base block. The upper sliding base block and the lower sliding base block have corresponding structures and are in ball-sliding cooperation.

[0011] Furthermore, the contact surface between the upper sliding base block and the lower sliding base block is a spherical surface convex downward in the middle, and the contact surface between the upper sliding base block and the lower sliding base block has a common center of the sphere.

[0012] Furthermore, annular grooves for accommodating the inner damping rods are arranged on the side walls of the upper sliding groove and the lower sliding groove. The inner side of the annular groove is communicated with the upper sliding groove or the lower sliding groove. There are multiple inner damping rods, one end of which is rotatably connected to the annular groove, and the other end is rotatably connected to the upper rotating seat or the lower rotating seat.

[0013] Furthermore, the rotational connections at both ends of the inner damping rod are ball hinges.

[0014] Furthermore, a plurality of upper damping rods are ball-hinged between the bottom surface of the upper base and the lower rotating seat, and a plurality of lower damping rods are ball-hinged between the upper surface of the lower base and the lower rotating seat. The lower damping rods and the upper damping rods are arranged at intervals.

[0015] Furthermore, the annular groove penetrates through the bottom surface of the upper base or the upper surface of the lower base. The bottom surface of the upper base is provided with an upper ring surface connected to the upper damping rod, and the upper surface of the lower base is provided with a lower ring surface connected to the lower damping rod.

[0016] Furthermore, a gap is arranged between the top surface of the upper rotating seat and the inner top surface of the upper sliding groove.

[0017] Positive and beneficial effects:

[0018] By the combined action of the buffer support of the upper damping rod and the lower damping rod, the spherical sliding fit of the upper rotating seat and the lower rotating seat, and the torsional force support of the inner damping rod, it is possible to buffer and absorb stresses at different angles more efficiently, thereby ensuring the structural stability and safety of the bridge;

[0019] Through the sliding rotation fit between the upper rotating seat and the upper sliding groove, the lower rotating seat and the lower sliding groove, and the spherical sliding fit between the upper sliding base block and the lower sliding base block, the force distribution and buffer effect are optimized, the load is dispersed, and thus the stability and durability of the structure are improved. Brief description of the drawings

[0020] Figure 1 It is a schematic structural view of the present utility model;

[0021] Figure 2 It is a schematic view of the internal structure of the present utility model;

[0022] Figure 3 It is a schematic structural view of the lower base of the present utility model;

[0023] In the figure: upper base 1, upper sliding groove 101, upper ring surface 102, upper rotating seat 2, upper sliding base block 201, upper inner base 202, upper damping rod 3, lower damping rod 4, lower rotating seat 5, lower sliding base block 501, lower inner base 502, lower base 6, lower sliding groove 601, lower ring surface 602, inner damping rod 7, annular groove 8; Detailed implementation manners

[0024] The present utility model will be further described below with reference to the drawings and embodiments.

[0025] First embodiment:

[0026] As shown in Figures 1 - 3 , a bridge bearing for shock absorption and buffering provided by the present utility model includes a lower base 6 connected to a bridge pier and an upper base 1 connected to an upper structure of the bridge. Among them, the upper base 1 and the lower base 6 are correspondingly arranged. The upper base 1 includes an installation plane and an annular frame structure. The upper base 1 and the lower base 6 are symmetrically arranged. The upper base 1 and the lower base 6 can be installed and fixed by bolts on the installation plane. An active upper rotating seat 2 and an active lower rotating seat 5 are respectively arranged on the upper base 1 and the lower base 6, and the upper rotating seat 2 and the lower rotating seat 5 are in spherical sliding contact and cooperation; an upper damping rod 3 and a lower damping rod 4 are arranged between the upper base 1 and the lower base 6 to assist the upper rotating seat 2 and the lower rotating seat 5 to buffer and reset along the longitudinal axis; inner damping rods 7 are respectively arranged inside the upper base 1 and the lower base 6 to assist the upper rotating seat 2 and the lower rotating seat 5 in torsional buffering

[0027] Through the spherical sliding contact between the upper rotating seat 2 and the lower rotating seat 5, the device can smoothly cope with friction and wear during movement, while reducing noise and vibration during operation. By utilizing the buffering effect of the upper damping rod 3 and the lower damping rod 4, the impact force of the system during longitudinal movement can be reduced, improving the overall stability and durability. At the same time, the torsional buffering function of the inner damping rod 7 further enhances the system's adaptability to torque, and can directly assist the upper rotating seat 2 and the lower rotating seat 5 in torsional reset, avoiding excessive mechanical stress, ensuring that the system can effectively absorb torque under various load conditions, thereby extending the service life of the equipment. By the combined action of the buffering support of the upper damping rod 3 and the lower damping rod 4, the spherical sliding fit of the upper rotating seat 2 and the lower rotating seat 5, and the torsional force support of the inner damping rod 7, the stress at different angles can be buffered and absorbed more efficiently, thus ensuring the structural stability and safety of the bridge.

[0028] The second embodiment is different from the first embodiment in that:

[0029] The facing surfaces of the upper base 1 and the lower base 6 are respectively provided with an upper sliding groove 101 and a lower sliding groove 601. The upper sliding groove 101 and the lower sliding groove 601 are arranged opposite to each other and are both cylindrical. The upper rotating seat 2 includes an upper sliding base block 201 and an upper inner base 202. The upper inner base 202 is connected to the inside of the upper sliding groove 101 through a sliding and rotating fit, and its outer end passes through the upper sliding groove 101 and is connected to the upper sliding base block 201. The lower rotating seat 5 includes a lower sliding base block 501 and a lower inner base 502. The lower inner base 502 is connected to the inside of the upper sliding groove 101 through a sliding and rotating fit, and its outer end passes through the upper sliding groove 101 and is connected to the lower sliding base block 501 corresponding to the upper sliding base block 201. The upper sliding base block 201 and the lower sliding base block 501 have corresponding structures and are in spherical sliding fit. In practical applications, the connection between the upper base 1 and the lower base 6 allows the load to be transmitted through the upper damping rod 3 and the lower damping rod 4. The upper damping rod 3 and the lower damping rod 4 can play a buffering role. Additionally, after the upper base 1 bears the load, under the action of the load, the upper inner base 202 and the lower inner base 502 can perform a sliding and rotating fit for adaptive adjustment, and the sliding and rotating fit between the upper inner base 202 and the lower inner base 502 further optimizes the force distribution;

[0030] When an external force is applied, the sliding and rotating fit between the upper sliding base block 201 and the lower sliding base block 501 can effectively disperse and buffer the acting force, and also play a role in supporting and guiding, reducing direct friction and stress concentration. This sliding and rotating fit enables the force to be evenly distributed on the contact surface, and at the same time buffers the vibration and impact caused by load changes. The force changes from the point support of the upper damping rod 3 and the lower damping rod 4 to the surface support of the upper inner base 202 and the lower inner base 502. Coupled with the buffering effect of the upper damping rod 3 and the lower damping rod 4, the local stress on the device can be greatly reduced, and the stability of the overall structure is improved.

[0031] Furthermore, the contact surface between the upper sliding base block 201 and the lower sliding base block 501 is a spherical surface convex downward in the middle. Since the lower sliding base block 501 and the upper sliding base block 201 are in spherical sliding fit, the upper surface of the lower sliding base block 501 is a spherical surface concave downward in the middle. The contact surface between the upper sliding base block 201 and the lower sliding base block 501 has a common center of the sphere. That is to say, the contact surface between the upper sliding base block 201 and the lower sliding base block 501 is a spherical surface structure based on the same center of the sphere. This can provide better contact fit and movement flexibility, reduce friction and wear, and improve the stability and durability of the structure. A lubricating oil or grease is provided between the contact surfaces of the upper sliding base block 201 and the lower sliding base block 501, which can further reduce friction.

[0032] The third embodiment is different from the first embodiment in the following features:

[0033] Annular grooves 8 for accommodating the inner damping rods 7 are provided on the side walls of both the upper sliding groove 101 and the lower sliding groove 601. Among them, the inner side of the annular groove 8 communicates with the upper sliding groove 101 or the lower sliding groove 601. There are multiple inner damping rods 7, and the inner damping rods 7 are circumferentially distributed based on the axis of the annular groove 8. One end of each inner damping rod 7 is rotatably connected to the annular groove 8, and the other end is rotatably connected to the upper rotating seat 2 or the lower rotating seat 5. Under the action of an external force, the upper inner base 202 slides and rotates in the upper sliding groove 101, and the lower inner base 502 slides and rotates inside the lower sliding groove 601. The inner damping rods 7 can be used to pull the upper inner base 202 and the lower inner base 502, enabling the inner damping rods 7 to rotate in multiple directions with the support of spherical hinges. The spherical hinge design of the inner damping rods 7 allows free rotation in different directions, thereby assisting the pulling and resetting of the upper rotating seat 2 and the lower rotating seat 5, especially for the rotation of the upper rotating seat 2.

[0034] A plurality of upper damping rods 3 are spherically hinged between the bottom surface of the upper base 1 and the lower rotating seat 5. A plurality of lower damping rods 4 are spherically hinged between the upper surface of the lower base 6 and the lower rotating seat 5. The lower damping rods 4 and the upper damping rods 3 are arranged at intervals. That is, the bottom surface of the upper base 1 is spherically hinged to the plurality of upper damping rods 3, and the movable end of the upper damping rod 3 is spherically hinged to the lower sliding base block 501. The upper surface of the lower base 6 is spherically hinged to a plurality of lower damping rods 4, and the movable end of the lower damping rod 4 is spherically hinged to the upper sliding base block 201.

[0035] The number of the upper damping rods 3 is the same as that of the lower damping rods 4, and the upper damping rods 3 and the lower damping rods 4 are arranged at intervals and are circumferentially distributed outside the upper rotating seat 2 and the lower rotating seat 5. The upper damping rods 3 and the lower damping rods 4 are in an inclined structure during installation. When the device is operating, the spherical hinge connection on the bottom surface of the upper base 1 ensures the free rotation of the upper damping rods 3, enabling them to effectively cooperate with the lower sliding base block 501. The spherical hinge connection on the upper surface of the lower base 6 ensures the flexible movement of the lower damping rods 4, so as to stably cooperate with the upper sliding base block 201, and can well adapt to the spherical contact sliding situation between the upper rotating seat 2 and the lower rotating seat 5. The plurality of upper damping rods 3 and lower damping rods 4 are used to achieve longitudinal buffering and support for the upper base 1 and the lower base 6, and assist the upper rotating seat 2 and the lower rotating seat 5 to buffer and reset along the longitudinal axis;

[0036] Furthermore, the annular groove 8 penetrates through the bottom surface of the upper base 1 or the upper surface of the lower base 6. The bottom surface of the upper base 1 is provided with an upper ring surface 102 connected to the upper damping rod 3, and the upper surface of the lower base 6 is provided with a lower ring surface 602 connected to the lower damping rod 4. The penetrating design of the annular groove 8 facilitates the processing of the annular groove 8, and it is more economical during processing. During installation and integration, the openings of the annular groove 8 can be closed through the upper ring surface 102 and the lower ring surface 602, so as to facilitate the overall installation of the device.

[0037] In a preferred embodiment, there is a gap between the top surface of the upper rotating seat 2 and the inner top surface of the upper sliding groove 101. This gap allows the device to perform fine adjustment when the load changes, reducing friction and stress concentration.

[0038] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claimed rights.

Claims

1. A bridge bearing for shock absorption and buffering, comprising a lower base (6) connected to a bridge pier and an upper base (1) connected to a bridge superstructure, wherein: The upper base (1) and the lower base (6) are arranged correspondingly, and are characterized in that: The upper base (1) and the lower base (6) are respectively provided with a movable upper rotating seat (2) and a movable lower rotating seat (5), and the upper rotating seat (2) and the lower rotating seat (5) are in ball sliding contact cooperation; An upper damping rod (3) and a lower damping rod (4) are provided between the upper base (1) and the lower base (6) to assist the upper rotating seat (2) and the lower rotating seat (5) in buffering and resetting toward the longitudinal axis; an internal damping rod (7) is provided inside the upper base (1) and the lower base (6) to assist the upper rotating seat (2) and the lower rotating seat (5) in torsion buffering, respectively.

2. A bridge bearing for shock absorption and buffering according to claim 1, characterized in that: The upper base (1) and the lower base (6) are respectively provided with an upper slide groove (101) and a lower slide groove (601) on the facing surfaces thereof; the upper rotating seat (2) comprises an upper sliding base block (201) and an upper inner base (202); the upper inner base (202) is connected to the interior of the upper slide groove (101) by sliding and rotating fit, and its outer end passes through the upper slide groove (101) and is connected to the upper sliding base block (201); the lower rotating seat (5) comprises a lower sliding base block (501) and a lower inner base (502); the lower inner base (502) is connected to the interior of the upper slide groove (101) by sliding and rotating fit, and its outer end passes through the upper slide groove (101) and is connected to a lower sliding base block (501) corresponding to the upper sliding base block (201); the upper sliding base block (201) and the lower sliding base block (501) have corresponding structures, and are ball-sliding fit.

3. A bridge bearing for shock absorption and buffering according to claim 2, characterized in that: The contact surface between the upper sliding base block (201) and the lower sliding base block (501) is a spherical surface with a central lower convex surface, and the contact surface between the upper sliding base block (201) and the lower sliding base block (501) has a common spherical center.

4. A bridge bearing for shock absorption and buffering according to claim 2, characterized in that:

4. The side walls of the upper slide groove (101) and the lower slide groove (601) are both provided with an annular groove (8) for accommodating the inner damping rod (7), wherein the inner side of the annular groove (8) is communicated with the upper slide groove (101) or the lower slide groove (601), and there are a plurality of inner damping rods (7), one end of which is rotatably connected to the annular groove (8), and the other end of which is rotatably connected to the upper rotating seat (2) or the lower rotating seat (5).

5. A bridge bearing for shock absorption and buffering according to claim 4, characterized in that:

5. The rotational connections at both ends of the inner damping rod (7) are both ball hinges.

6. A bridge bearing for shock absorption and buffering according to claim 4, characterized in that:

6. A plurality of upper damping rods (3) are ball-jointed between the bottom surface of the upper base (1) and the lower rotating seat (5), and a plurality of lower damping rods (4) are ball-jointed between the upper surface of the lower base (6) and the lower rotating seat (5), wherein the lower damping rods (4) and the upper damping rods (3) are spaced apart.

7. A bridge bearing for shock absorption and buffering according to claim 6, characterized in that:

7. The annular groove (8) passes through the bottom surface of the upper base (1) or the upper surface of the lower base (6); the bottom surface of the upper base (1) is provided with an upper annular surface (102) connected to the upper damping rod (3); the upper surface of the lower base (6) is provided with a lower annular surface (602) connected to the lower damping rod (4).

8. The bridge support for shock absorption and buffering according to claim 4, characterized in that: A gap is provided between the top surface of the upper rotating seat (2) and the inner top surface of the upper sliding groove (101).

Images