Bridge bearing

Abstract

The application provides a bridge support, comprising a first support plate and a second support plate arranged at intervals, and a sliding mechanism arranged between the first support plate and the second support plate, wherein the sliding mechanism comprises a lining plate abutting against the first support plate, and a sliding plate arranged below the lining plate and abutting against the second support plate.

Description

Technical Field

[0001] This invention relates to the field of bridges and buildings, and more specifically to a bridge bearing. Background Technology

[0002] Bridge bearings are crucial structural components connecting the superstructure and substructure of a bridge. They reliably transfer the reactions and deformations (displacement and rotation) of the superstructure to the substructure. Within the bearing structure, the friction pair (sliding and rotating) is the core structure. It bears the vertical load of the bearing and evenly distributes the load to the substructure, while simultaneously achieving bearing sliding and energy dissipation through horizontal relative sliding. This horizontal relative sliding of the bearing is very frequent. When the sliding friction pair wears severely, the bearing performance is affected, rendering it unusable. If the bearing becomes unusable, replacement and repair are troublesome, impacting track operation and increasing bridge maintenance costs.

[0003] Currently, bridge bearings generally utilize planar sliding pairs composed of wear-resistant materials (such as modified ultra-high molecular weight polyethylene) and mirror-finished stainless steel plates, with silicone grease applied to achieve planar displacement of the beam. Existing technologies for improving the durability of sliding pairs mainly focus on enhancing the wear resistance of the wear-resistant plate material or adding silicone grease midway through the process. However, improvements in material performance are easily limited by material technology and price, thus failing to meet the demands of practical applications.

[0004] Therefore, it is desirable in the art to provide a bridge bearing that can improve the durability of the sliding pair from a structural perspective, so as to further solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to propose a bridge bearing that abandons the conventional approach of improving the performance of planar sliding friction pair materials or adding silicone grease midway. Instead, it utilizes the structural design to increase the wear distance by working the planar sliding friction pair twice, thereby improving the durability of the friction pair and further extending the service life of the bridge bearing.

[0006] According to the present invention, a bridge bearing is provided, comprising a first bearing plate and a second bearing plate arranged at intervals, and

[0007] A sliding mechanism is disposed between the first support plate and the second support plate. The sliding mechanism includes a liner plate that abuts against the first support plate, and a sliding plate disposed below the liner plate and abutting against the second support plate.

[0008] The bridge bearing further includes a first planar sliding wear-resistant plate disposed between the liner and the first bearing plate, and a second planar sliding wear-resistant plate disposed between the sliding plate and the second bearing plate.

[0009] In one embodiment, a first fixing groove is provided at the upper end face of the liner, and the first planar sliding wear-resistant plate is nested in the first fixing groove.

[0010] A first guide plate is provided at the lower end face of the first support plate, and the first planar sliding wear-resistant plate and the first guide plate form a first planar sliding friction pair.

[0011] In one embodiment, a second fixing groove is provided at the lower end face of the sliding plate, and the second planar sliding wear-resistant plate is nested in the second fixing groove.

[0012] A second guide plate is provided at the lower end face of the second support plate, and the second planar sliding wear-resistant plate and the second guide plate form a second planar sliding friction pair.

[0013] In one embodiment, a first limiting plate is provided on the first support plate to restrict the movement path of the liner, and a second limiting plate is provided on the second support plate to restrict the movement path of the sliding plate.

[0014] When the sliding mechanism slides, the first planar sliding friction pair and the second planar sliding friction pair can work together to complete the planar sliding operation.

[0015] When the bridge bearing slides, the first planar sliding friction pair can be induced to slide first through the first bearing plate and then the second planar sliding friction pair can be induced to slide through the second bearing plate, or the second planar sliding friction pair can be induced to slide first through the second bearing plate and then the first planar sliding friction pair can be induced to slide through the first bearing plate.

[0016] In one embodiment, the coefficients of friction of both the first planar sliding friction pair and the second planar sliding friction pair are less than 0.03.

[0017] In one embodiment, the lower end face of the liner is constructed as either a spherical structure or a basin-shaped structure, and a rotating wear-resistant plate is provided between the liner and the sliding plate.

[0018] In one embodiment, a third fixing groove is provided at the upper end face of the sliding plate, and the rotating wear-resistant plate is nested in the third fixing groove.

[0019] A third guide plate is provided on the lower end face of the liner, and the rotating wear-resistant plate and the third guide plate form a rotating friction pair.

[0020] In one embodiment, the bridge bearing is constructed as either a unidirectional sliding bearing or a bidirectional sliding bearing.

[0021] In one embodiment, the bridge support further includes a baffle plate fixed to the first limiting plate or the second limiting plate by fastening screws.

[0022] When the baffle is fixedly connected to the first limiting plate, the first planar sliding friction pair is in a locked state and the second planar sliding friction pair is in a working state; when the baffle is fixedly connected to the second limiting plate, the second planar sliding friction pair is in a locked state and the first planar sliding friction pair is in a working state.

[0023] In one embodiment, the bridge support further includes sealing rings disposed between the first support plate and the liner, between the second support plate and the sliding plate, and between the liner and the sliding plate.

[0024] Compared with the prior art, the advantages of the present invention are as follows:

[0025] Firstly, this invention, through structural design, abandons the conventional approach of improving the performance of planar sliding friction pair materials or adding silicone grease midway. Instead, it utilizes the two-stage operation of the planar sliding friction pair to increase the wear distance, thereby improving the durability of the friction pair and further extending the service life of the bridge bearing.

[0026] Secondly, the present invention utilizes the alternating use of the first planar sliding friction pair and the second planar sliding friction pair in its structural design, so that after the service life of one planar sliding friction pair ends, it can be quickly and conveniently replaced by another planar friction pair to take over the working state, thereby further extending the service life of the bridge bearing. Attached Figure Description

[0027] The invention will now be described in detail with reference to the accompanying drawings, in which:

[0028] Figure 1 This is a left view of the bridge support according to the present invention;

[0029] Figure 2 This is a right view of the bridge support according to the present invention;

[0030] Figure 3 for Figure 1 A partial view showing the structure of the first planar sliding friction pair;

[0031] Figure 4 for Figure 1 A partial view showing the structure of the second planar sliding friction pair;

[0032] Figure 5 An embodiment of a bridge support according to the present invention is illustrated schematically.

[0033] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0034] To make the technical solutions and advantages of the present invention clearer, exemplary embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not an exhaustive list of all embodiments. Furthermore, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0035] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components.

[0037] Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] The invention will now be further described with reference to the accompanying drawings.

[0039] Figure 1 This is a left view of the bridge support according to the present invention;

[0040] Figure 2 This is a right view of the bridge support according to the present invention.

[0041] Figure 3 for Figure 1 A partial view showing the structure of the first planar sliding friction pair 101.

[0042] Figure 4 for Figure 1 A partial view showing the structure of the second planar sliding friction pair 102.

[0043] The following is combined with Figures 1-2The bridge bearing 100, used as a unidirectional sliding bearing, includes a first bearing plate 11, a second bearing plate 12, and a sliding mechanism. Preferably, the first bearing plate 11 and the second bearing plate 12 are arranged at intervals, and the sliding mechanism is arranged between the first bearing plate 11 and the second bearing plate 12.

[0044] In one embodiment, such as Figures 1-2 As shown, the sliding mechanism includes a liner 20 that abuts against the first support plate 11, and a sliding plate (30) disposed below the liner 20 and abutting against the second support plate (12). In this invention, the first support plate 11 and the second support plate 12 can slide in a plane relative to the sliding mechanism, the details of which are described below.

[0045] According to the present invention, such as Figures 1-2 As shown, the bridge bearing 100 also includes a first planar sliding wear-resistant plate 22 and a second planar sliding wear-resistant plate 32. The first planar sliding wear-resistant plate 22 is disposed between the liner 20 and the first bearing plate 11, while the second planar sliding wear-resistant plate 32 is disposed between the sliding plate 30 and the second bearing plate 12.

[0046] In one embodiment, such as Figure 3 As shown, a first fixing groove 21 is provided on the upper end face of the liner 20. Preferably, a first planar sliding wear-resistant plate 22 is nested within the first fixing groove 21, and a first guide plate 111 is provided on the lower end face of the first support plate 11. In this invention, the first planar sliding wear-resistant plate 22 and the first guide plate 111 form a first planar sliding friction pair 101.

[0047] Thus, the first support plate 11 can slide in a plane relative to the sliding mechanism to generate a certain sliding distance, and the load transmitted to the bridge support 100 can be dissipated more easily through the first planar sliding friction pair 101.

[0048] In one embodiment, such as Figure 4 As shown, a second fixing groove 31 is provided at the lower end face of the sliding plate 30. Preferably, a second planar sliding wear-resistant plate 32 is nested within the second fixing groove 31, and a second guide plate 121 is provided at the lower end face of the second support plate 12. In this invention, the second planar sliding wear-resistant plate 32 and the second guide plate 121 form a second planar sliding friction pair 102.

[0049] Thus, the second support plate 12 can slide in a plane relative to the sliding mechanism to generate a certain sliding distance, and the load transmitted to the bridge support 100 can be dissipated more easily through the second planar sliding friction pair 102.

[0050] In this invention, the first support plate 11 or the second support plate 12 can be the first to perform the sliding operation, and the first planar sliding friction pair 101 and the second planar sliding friction pair 102 can effectively increase the wear distance (two sliding distances, i.e., generated by the sliding of the first support plate 11 and the second support plate 12 respectively), so as to further improve the durability of the planar sliding friction pair.

[0051] In other words, the present invention enables the first support plate 11 and the second support plate 12 to slide relative to the sliding mechanism through the first planar sliding friction pair 101 and the second planar sliding friction pair 102. Therefore, during the entire sliding process, the entire sliding work (distance) of the bridge support 100 will be distributed across the two planar sliding friction pairs (i.e., the first planar sliding friction pair 101 and the second planar sliding friction pair 102), thereby effectively improving the durability of the planar sliding friction pairs and further extending the service life of the bridge support 100.

[0052] In this invention, when the temperature is between -25℃ and 60℃, the coefficient of friction between the first planar sliding friction pair 101 and the second planar sliding friction pair 102 is typically less than 0.03; while when the temperature is between -50℃ and -25℃, the coefficient of friction between the first planar sliding friction pair 101 and the second planar sliding friction pair 102 is typically less than 0.05. In this way, the bridge bearing 100 can achieve better load dissipation capability through the first planar sliding friction pair 101 and the second planar sliding friction pair 102.

[0053] Furthermore, since the first planar sliding friction pair 101 and the second planar sliding friction pair 102 can provide two displacements for the bridge bearing 100, the overall sliding distance (wear distance) of the bridge bearing 100 is further increased, thereby fully dissipating the load transmitted to the bridge bearing 100. For example, if the sliding distance of each first planar sliding wear-resistant plate 22 and each second planar sliding wear-resistant plate 32 is 50m, then the overall sliding distance of the bridge bearing 100 is 100m.

[0054] According to the present invention, such as Figures 1-2 As shown, the bridge bearing 100 also includes a first limiting plate 13 disposed on the first bearing plate 11 and a second limiting plate 14 disposed on the second bearing plate 12.

[0055] Preferably, the first limiting plate 13 is configured to limit the movement path of the liner 20, while the second limiting plate 14 is configured to limit the movement path of the sliding plate 30. In this way, the friction pairs (i.e., the first planar sliding friction pair 101 and the second planar sliding friction pair 102) can be effectively matched to limit the maximum sliding distance between the first support plate 11 and the second support plate 12.

[0056] In this invention, when the sliding mechanism slides, the sliding mechanism can complete the planar sliding work together by forming a first planar sliding friction pair 101 composed of a first planar sliding wear-resistant plate 22 and a first guide plate 111, and a second planar sliding friction pair 102 composed of a second planar sliding wear-resistant plate 32 and a second guide plate 121.

[0057] In this invention, when the bridge support 100 slides, the first planar sliding friction pair 101 or the second planar sliding friction pair 102 can be slid freely first, and when the sliding distance of one planar sliding friction pair is insufficient, the other planar sliding friction pair can be slid.

[0058] In other words, during sliding, the first planar sliding friction pair 101 can be slid by the first support plate 11 first, and then the second planar sliding friction pair 102 can be slid by the second support plate 12, or the second planar sliding friction pair 102 can be slid by the second support plate 12 first, and then the first planar sliding friction pair 101 can be slid by the first support plate 11.

[0059] In addition, since the friction coefficient of the planar sliding friction pair will gradually increase after sliding wear, the friction coefficient of the two planar sliding friction pairs (the first planar sliding friction pair 101 and the second planar sliding friction pair 102) will alternately increase during the sliding process of the bridge bearing 100. That is, the sliding life of the bridge bearing 100 is the sum of the lives of the two planar sliding friction pairs. Therefore, the durability of the planar sliding friction pair can be effectively improved, so as to further extend the service life of the bridge bearing 100.

[0060] In this invention, since the bridge support 100 is a unidirectional sliding support, the device can perform sliding operations in a single direction, either longitudinally or transversely.

[0061] In other embodiments of the present invention, the bridge support 100 may also be configured as a bidirectional sliding support, which can slide simultaneously in the longitudinal and transverse directions of the bridge. Its working principle is similar to that of the unidirectional sliding support described above, and its specific details will not be repeated here.

[0062] According to the present invention, the lower end face of the liner 20 is constructed as either a spherical structure or a basin-shaped structure. And as... Figures 1-2 As shown, a rotating wear-resistant plate 33 is provided between the liner 20 and the sliding plate 30. Preferably, the rotating wear-resistant plate 33 is structurally compatible with the liner 20, thereby ensuring that the liner 20 can slide a certain distance relative to the sliding plate 30.

[0063] In one embodiment, such as Figures 1-2As shown, a third fixing groove is provided at the upper end face of the sliding plate 30. Preferably, the rotating wear-resistant plate 33 is nested in the third fixing groove, and a third guide plate 23 is provided at the lower end face of the liner 20. In this invention, the rotating wear-resistant plate 33 and the third guide plate 23 form a rotating friction pair 103.

[0064] Thus, the liner 20 can rotate and slide relative to the sliding plate 30 to generate a certain sliding distance, and by cooperating with the first planar sliding friction pair 101 and the second planar sliding friction pair 102, it can more easily dissipate the load transmitted to the bridge support 100.

[0065] In one embodiment, the bridge bearing 100 further includes a sealing ring 16. In this invention, the sealing ring 16 is respectively disposed between the first bearing plate 11 and the liner 20, between the second bearing plate 12 and the sliding plate 30, and between the liner 20 and the sliding plate 30.

[0066] Preferably, the sealing rings 16 in this invention are all located on the outside of the friction pairs (i.e., the first planar sliding friction pair 101, the second planar sliding friction pair 102, and the rotating friction pair 103), thereby effectively preventing dust and water, and ensuring that the bridge bearing 100 has a long service life.

[0067] Compared with existing technologies, this invention, through structural design, abandons the conventional approach of improving the performance of planar sliding friction pair materials or adding silicone grease midway. Instead, it utilizes the two-stage operation of the planar sliding friction pair to increase the wear distance, thereby improving the durability of the friction pair and further extending the service life of the bridge bearing 100.

[0068] Figure 5 An embodiment of a bridge support according to the present invention is illustrated schematically.

[0069] In this embodiment, the bridge support 100 is constructed as an alternating unidirectional sliding support.

[0070] In one embodiment, the bridge support further includes a baffle 15. Preferably, the baffle 15 can be selectively fixed to the first limiting plate 13 or the second limiting plate 14 by fastening screws 151, thereby achieving the purpose of restricting the sliding of the first support plate 11 or the second support plate 12.

[0071] In this invention, the baffle 15 can be fixed to the first limiting plate 13 by fastening screws 151, thereby locking the first planar sliding friction pair 101 and putting the second planar sliding friction pair 102 into operation. Therefore, in this state, only the second support plate 12 and the sliding mechanism are allowed to enter the sliding operation state.

[0072] After a certain period of operation, the baffle 15 and the fastening screw 151 are released, and both are installed on the second limiting plate 14 in the same manner, thereby locking the second planar sliding friction pair 102 and putting the first planar sliding friction pair 101 into operation. Therefore, in this state, only the first support plate 11 and the sliding mechanism enter the sliding working state.

[0073] In this way, the first support plate 11 and the second support plate 12 can achieve the effect of alternating use of the first planar sliding friction pair 101 and the second planar sliding friction pair 102. Therefore, the sliding life of the bridge bearing 100 is the sum of the lives of the two planar sliding friction pairs, which can effectively improve the durability of the bridge bearing 100 and further extend the service life of the bridge bearing 100.

[0074] Furthermore, the present invention can achieve the above-mentioned work simply by changing the position of the baffle 15 and the fastening screw 151, thus giving the bridge support 100 the advantage of being convenient and quick.

[0075] In other embodiments of the present invention, the bridge support 100 may also be configured as an alternating bidirectional sliding support. The working principle of this support is the same as that of the alternating unidirectional sliding support described above, and its specific details will not be repeated.

[0076] Preferably, the baffle 15 in this invention is not limited to any particular form, as long as it satisfies the requirement of locking the relative positions of the first support plate 11 and the sliding plate 30 or the second support plate 12 and the sliding plate 30.

[0077] Compared with the prior art, the present invention utilizes the alternating use of the first planar sliding friction pair 101 and the second planar sliding friction pair 102 in its structural design, so that after the service life of one planar sliding friction pair ends, it can be quickly and conveniently replaced by another planar friction pair to take over the working state, thereby further extending the service life of the bridge support 100.

[0078] Compared with existing technologies, the advantages of this invention are:

[0079] Firstly, this invention, through structural design, abandons the conventional approach of improving the performance of planar sliding friction pair materials or adding silicone grease midway. Instead, it utilizes the two-stage operation of the planar sliding friction pair to increase the wear distance, thereby improving the durability of the friction pair and further extending the service life of the bridge bearing 100.

[0080] Secondly, the present invention utilizes the alternating use of the first planar sliding friction pair 101 and the second planar sliding friction pair 102 in its structural design, so that after the service life of one planar sliding friction pair ends, it can be quickly and conveniently replaced by another planar friction pair to take over the working state, thereby further extending the service life of the bridge bearing 100.

[0081] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art can easily make changes or modifications within the scope of the present invention, and such changes or modifications should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A bridge bearing, comprising: The first support plate (11) and the second support plate (12) are arranged at intervals, and A sliding mechanism is provided between the first support plate (11) and the second support plate (12). The sliding mechanism includes a liner (20) that abuts against the first support plate (11) and a sliding plate (30) that is provided below the liner (20) and abuts against the second support plate (12). The bridge bearing further includes a first planar sliding wear-resistant plate (22) disposed between the liner (20) and the first bearing plate (11), and a second planar sliding wear-resistant plate (32) disposed between the sliding plate (30) and the second bearing plate (12). A first fixing groove (21) is provided on the upper end face of the liner (20), and the first planar sliding wear-resistant plate (22) is nested in the first fixing groove (21). A first guide plate (111) is provided on the lower end face of the first support plate (11). The first planar sliding wear-resistant plate (22) and the first guide plate (111) form a first planar sliding friction pair (101). A second fixing groove (31) is provided on the lower end face of the sliding plate (30), and the second planar sliding wear-resistant plate (32) is nested in the second fixing groove (31). A second guide plate (121) is provided on the lower end face of the second support plate (12). The second planar sliding wear-resistant plate (32) and the second guide plate (121) form a second planar sliding friction pair (102). A first limiting plate (13) for limiting the movement path of the liner (20) is provided on the first support plate (11), and a second limiting plate (14) for limiting the movement path of the sliding plate (30) is provided on the second support plate (12). When the sliding mechanism slides, the first planar sliding friction pair and the second planar sliding friction pair can work together to complete the planar sliding operation. When the bridge support slides, the first planar sliding friction pair can be slid by the first support plate (11) first and then the second planar sliding friction pair can be slid by the second support plate (12), or the second planar sliding friction pair can be slid by the second support plate (12) first and then the first planar sliding friction pair can be slid by the first support plate (11).

2. The bridge bearing according to claim 1, characterized in that, The coefficients of friction of both the first planar sliding friction pair and the second planar sliding friction pair are less than 0.

03.

3. The bridge bearing according to any one of claims 1 to 2, characterized in that, The lower end face of the liner (20) is constructed in either a spherical or a basin-shaped structure, and a rotating wear-resistant plate (33) is provided between the liner (20) and the sliding plate (30).

4. The bridge bearing according to claim 3, characterized in that, A third fixing groove is provided at the upper end face of the sliding plate (30), and the rotating wear-resistant plate (33) is nested in the third fixing groove. A third guide plate (23) is provided on the lower end face of the liner (20), and the rotating wear-resistant plate (33) and the third guide plate (23) form a rotating friction pair (103).

5. The bridge bearing according to any one of claims 1 to 2, characterized in that, The bridge bearing structure is either a unidirectional sliding bearing or a bidirectional sliding bearing.

6. The bridge bearing according to claim 1, characterized in that, The bridge support also includes a baffle (15) fixed to the first limiting plate (13) or the second limiting plate (14) by fastening screws (151). When the baffle (15) is fixedly connected to the first limiting plate (13), the first planar sliding friction pair is in a locked state and the second planar sliding friction pair is in a working state; when the baffle (15) is fixedly connected to the second limiting plate (14), the second planar sliding friction pair is in a locked state and the first planar sliding friction pair is in a working state.

7. The bridge bearing according to any one of claims 1 to 2, characterized in that, The bridge bearing also includes a sealing ring (16) disposed between the first bearing plate (11) and the liner (20), between the second bearing plate (12) and the sliding plate (30), and between the liner (20) and the sliding plate (30).

Images