Spherical support with quick-changing sliding pair

Abstract

The utility model belongs to the technical field of supports for capital construction, and particularly relates to a spherical support with a quick-change sliding pair, which comprises an upper support plate, a lower support plate and a spherical crown plate component positioned between the bottom of the upper support plate and the top of the lower support plate, and the sliding pair is clamped between the side walls of the upper support plate and the lower support plate. The sliding pair comprises a guide strip and a sliding opposite-abrasion piece, the guide strip is connected with the lower base plate in a swinging mode through a connecting piece, the swinging friction side of the guide strip makes contact with the lower base plate to form swinging friction, and the translation friction side of the guide strip abuts against the upper base plate through the sliding opposite-abrasion piece and forms sliding friction with the upper base plate. Due to the fact that the guide strips are additionally arranged, it is guaranteed that under the condition that the whole support is located at different rotating angles, the opposite-grinding pieces are in the vertical and parallel state all the time, and therefore the situation that the sliding opposite-grinding pieces make contact with the ridge faces is avoided, the sliding performance is improved, and the loss of the opposite-grinding pieces is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of infrastructure support technology, specifically relating to a quick-change sliding pair spherical support. Background Technology

[0002] The infrastructure industry is using more and more bearings, and the requirements for them are also getting higher and higher. For highly sensitive engineering scenarios with extremely harsh environmental requirements, such as long-span bridges and precision laboratories, bearings with high seismic resistance and displacement resistance are needed. The bearings use the relative swing between their upper and lower bearing plates to offset the impact of the large rotation angle of the lower bearing plate on the bearing.

[0003] Currently, common sliding pairs can only achieve mutual translation in the up-down or left-right directions, which is not suitable for the design requirements of large-angle supports. For large-angle supports, the grinding parts cannot be ground in parallel. The ridges of one set of grinding plates of the grinding parts will contact the plane of the other set of grinding plates and generate friction, which will affect the sliding performance and cause great damage to the grinding parts, making them very easy to be damaged.

[0004] In addition, the sliding pairs of the large corner bearings age relatively quickly and therefore require frequent replacement. The current connection structure between the sliding pairs and the lower bearing plate is quite complex, resulting in low maintenance efficiency and increased maintenance costs. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a quick-change sliding pair spherical support. By adding a guide strip, it ensures that the grinding parts are always vertical and parallel to each other when the support is at different rotation angles, thereby avoiding contact between the sliding grinding parts and improving sliding performance and reducing wear on the grinding parts.

[0006] The specific technical solution adopted in this utility model is as follows:

[0007] A quick-change sliding pair spherical support includes an upper seat plate, a lower seat plate, and a spherical crown plate assembly located between the bottom of the upper seat plate and the top of the lower seat plate. A sliding pair is clamped between the side walls of the upper seat plate and the lower seat plate. The sliding pair includes a guide bar and a sliding grinding member. The guide bar is oscillatingly connected to the lower seat plate by means of a connector. The oscillating friction side of the guide bar contacts the lower seat plate to form oscillating friction. The translational friction side of the guide bar abuts against the upper seat plate by means of the sliding grinding member and forms sliding friction with the upper seat plate.

[0008] The sliding grinding component includes two sets of plate-shaped grinding discs. One set of grinding discs is disposed on the inner side wall of the upper seat plate, and the other set of grinding discs is disposed on the translational friction side of the guide strip. The two sets of grinding discs abut against each other and form sliding friction.

[0009] The lower seat plate has a recessed groove at the shoulder corner, and the swing friction side of the guide bar is in convex-concave fit with the groove of the lower seat plate and swings in connection.

[0010] The guide bar has a cuboid structure, and the swing friction side of the guide bar has a raised arched structure. The guide bar and the lower seat plate are respectively provided with an upper blind hole and a lower blind hole in the vertical direction. The opening sides of the upper blind hole and the lower blind hole are aligned and form an installation chamber for the connector.

[0011] The connector is a pin, which is located in the mounting cavity and its two ends are respectively inserted into the upper blind hole and the lower blind hole. The diameter of the upper blind hole gradually increases from the opening side to the deep side. The gap between the deep side wall of the upper blind hole and the pin forms a movable space for the pin to swing. The lower seat plate swings relative to the guide strip by means of the movable space.

[0012] The connecting component is a spring, which is located in the mounting cavity and its two ends are respectively inserted into the upper blind hole and the lower blind hole. The lower base plate has the freedom to swing relative to the guide bar by means of the spring.

[0013] The guide bar has a fan-shaped structure. The surface of the guide bar with the swing friction side has an arc-shaped structure and forms a curved surface with a fan-shaped structure. The surface of the guide bar with the translation friction side has a planar structure and forms a planar surface with a fan-shaped structure.

[0014] The connector includes a rotating shaft, a connecting plate, and fixing bolts. The connecting plate and fixing bolts are symmetrically arranged at both ends of the guide bar along the axial direction. The connecting plate is fixedly connected to the side wall of the lower seat plate by means of the fixing bolts. The rotating shaft passes through the guide bar in a direction parallel to the central axis of the guide bar. The two ends of the rotating shaft are rotatably connected to the connecting plates on both sides respectively. The lower seat plate has a degree of freedom to swing relative to the guide bar by means of the rotating shaft.

[0015] The crown plate assembly includes a flat sliding plate, a crown backing plate, and a spherical sliding plate arranged sequentially from top to bottom. The crown backing plate has a flat convex lens-shaped structure, with its convex side facing downward and forming a concave-convex fit with the spherical sliding plate.

[0016] The beneficial effects of this utility model are:

[0017] This invention includes a guide bar. Since the guide bar is hinged to the lower base plate, the two have relative rotational freedom. The guide bar is held between the upper and lower base plates. Therefore, when the lower base plate is in an inclined state, the guide bar, through the abutment between the two grinding components, ensures that when the upper and lower base plates swing, the plane of the grinding component mounted on the guide bar is always parallel to the plane of the grinding component mounted on the upper base plate. That is, the two grinding components are in surface-to-surface contact, ensuring that the grinding components are always vertical and parallel to each other when the entire support is at different rotation angles. This avoids the situation of angular contact between the sliding grinding components, improves sliding performance, and reduces wear on the grinding components. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the support structure in specific embodiment 1;

[0019] Figure 2 This is a schematic diagram of the rotating sliding pair in specific embodiment 1;

[0020] Figure 3 This is a schematic diagram of the support structure in specific embodiment 2;

[0021] Figure 4 This is a schematic diagram of the rotating sliding pair in specific embodiment 2;

[0022] Figure 5 This is a schematic diagram of the support structure in specific embodiment 3;

[0023] Figure 6 This is a schematic diagram of the rotating sliding pair in specific embodiment 3;

[0024] Figure 7 This is a top view of the support structure in specific embodiment 3;

[0025] Figure 8 This is a schematic diagram of the support structure in the prior art;

[0026] Figure 9 This is a schematic diagram of the rotating structure of a sliding pair in the prior art;

[0027] In the attached diagram, 1 is the upper seat plate, 2 is the lower seat plate, 3 is the guide strip, 4 is the grinding disc, 5 is the upper blind hole, 6 is the lower blind hole, 7 is the pin, 8 is the spring, 9 is the rotating shaft, 10 is the connecting plate, 11 is the fixing bolt, 12 is the flat sliding plate, 13 is the spherical crown liner, and 14 is the spherical sliding plate. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0029] Specific embodiment 1, such as Figures 1-2As shown, the assembly includes an upper seat plate 1, a lower seat plate 2, and a spherical crown plate assembly located between the bottom of the upper seat plate 1 and the top of the lower seat plate 2. A sliding pair is sandwiched between the side walls of the upper seat plate 1 and the lower seat plate 2. The sliding pair includes a guide bar 3 and a sliding grinding member. The guide bar 3 is oscillatingly connected to the lower seat plate 2 by means of a connector. The oscillating friction side of the guide bar 3 contacts the lower seat plate 2 to form oscillating friction. The translational friction side of the guide bar 3 abuts against the upper seat plate 1 by means of the sliding grinding member and forms sliding friction with the upper seat plate 1.

[0030] Currently, common sliding pairs can only achieve mutual translation in the vertical or horizontal directions, which is not suitable for the design requirements of large-angle supports. For large-angle supports, the grinding parts cannot be ground in parallel; the ridges of one set of grinding plates will contact the plane of the other set of grinding plates and generate friction. Figures 8-9 As shown, it not only affects the sliding performance but also causes significant damage to the grinding parts, making them extremely prone to failure.

[0031] Therefore, a guide bar 3 is added to this utility model. Since the guide bar 3 is hinged to the lower seat plate 2, the two have relative rotational freedom. The guide bar 3 is clamped by the upper seat plate 1 and the lower seat plate 2. Therefore, when the lower seat plate 2 is in an inclined state, the guide bar 3, through the abutment between the two grinding parts, ensures that when the upper seat plate 1 and the lower seat plate 2 swing, the plane of the grinding part installed on the guide bar 3 is always parallel to the plane of the grinding part installed on the upper seat plate 1. That is, the two grinding parts are in surface contact, ensuring that the grinding parts are always in a vertical and parallel state when the entire support is at different rotation angles. This avoids the situation of the sliding grinding parts having ridge surface contact, improves the sliding performance and reduces the wear of the grinding parts.

[0032] The sliding grinding element includes two sets of sheet-shaped grinding discs 4. One set of grinding discs 4 is disposed on the inner side wall of the upper seat plate 1, and the other set of grinding discs 4 is disposed on the translational friction side of the guide strip 3. The two sets of grinding discs 4 abut against each other and form sliding friction. The sheet-shaped structure of the grinding element increases the contact area, makes the friction force more uniform, reduces local wear, and extends the service life of the grinding element.

[0033] A groove is provided at the shoulder corner of the lower seat plate 2. The swing friction side of the guide bar 3 engages with the groove of the lower seat plate 2 and swings in connection. The groove provides installation space and forms a slide rail. Together with the guide bar 3, the groove constrains the rotation trajectory of the lower seat plate 2, ensuring that the lower seat plate 2 can only rotate along the guide bar 3, thus ensuring that the lower seat plate 2 always moves in the predetermined direction during rotation and avoiding deviation. At the same time, the recessed groove eliminates the shoulder corner of the lower seat plate 2, so that when the lower seat plate 2 swings, the shoulder corner of the lower seat plate 2 will not directly contact the upper seat plate 1.

[0034] The guide strip 3 has a cuboid structure, and the swing friction side of the guide strip 3 has a raised arched structure. The guide strip 3 and the lower seat plate 2 are respectively provided with an upper blind hole 5 and a lower blind hole 6 along the vertical direction. The opening sides of the upper blind hole 5 and the lower blind hole 6 are aligned to form an installation chamber for the connector. The arched structure can provide rotation space for the lower seat plate 2 to rotate.

[0035] like Figure 2 As shown, the connecting component is a pin 7. The pin 7 is located in the mounting cavity, and its two ends are respectively engaged with the upper blind hole 5 and the lower blind hole 6. The diameter of the upper blind hole 5 gradually increases from the opening side to the deep side. The gap between the deep side wall of the upper blind hole 5 and the pin 7 forms a movable space for the pin 7 to swing. The lower base plate 2 swings relative to the guide bar 3 by means of the movable space. When the support first generates a large angle, it is about 5°, which is different from the "large angle" in other scenarios. Therefore, the movable space is not too large. The movable space allows the pin 7 to generate a small degree of freedom of swing. When the lower base plate 2 swings, the pin 7 swings with the lower base plate 2, thus ensuring the connection between the lower base plate 2 and the guide bar 3 while having the freedom of swing.

[0036] In addition, the connection method of pin 7 is easy to disassemble and install, so that when replacing the sliding pair, the guide bar 3 can be pulled out and the new guide bar 3 can be inserted into pin 7, which improves maintenance efficiency and reduces maintenance costs.

[0037] The spherical crown plate assembly includes a flat sliding plate 12, a spherical crown liner 13, and a spherical sliding plate 14 arranged sequentially from top to bottom. The spherical crown liner 13 has a flat convex lens-shaped structure, with its convex side facing downwards and forming a concave-convex fit with the spherical sliding plate 14. The planar contact between the flat sliding plate 12 and the spherical crown liner 13 reduces the horizontal relative sliding resistance between the upper seat plate 1 and the lower seat plate 2. The curved surface of the spherical sliding plate 14 adapts to the rotation trajectory of the lower seat plate 2. At the same time, the convex lens-shaped structure can distribute the load and avoid stress concentration. The convex lens-shaped structure can also ensure that the load does not fall off when the upper seat plate 1 and the lower seat plate 2 are displaced.

[0038] Specific embodiment 2 differs from specific embodiment 1 in that the specific structure of the connector is different, such as... Figures 3-4 As shown, the connecting component is a spring 8. The spring 8 is located in the mounting cavity and its two ends are respectively engaged with the upper blind hole 5 and the lower blind hole 6. The lower base plate 2 has the freedom to swing relative to the guide bar 3 by means of the spring 8.

[0039] Because spring 8 has high elasticity, when the lower seat plate 2 rotates, spring 8 can swing along with the lower seat plate 2. At the same time, spring 8 can absorb load impact during swinging, reduce vibration, and improve the seismic performance of the support.

[0040] In addition, the connection method of spring 8 is similar to that of pin 7. When replacing the sliding pair, simply pull out the guide bar 3 and insert the new guide bar 3 into spring 8, which is highly efficient for maintenance.

[0041] Specific embodiment 3 differs from specific embodiment 2 and specific embodiment 1 in that the specific structure of the sliding pair is different, such as... Figures 5-7 As shown, the guide bar 3 has a fan-shaped structure. The surface of the guide bar 3 with the swing friction side has an arc-shaped structure and forms a curved surface with a fan-shaped structure. The surface of the guide bar 3 with the translation friction side has a planar structure and forms a planar surface with a fan-shaped structure.

[0042] In specific embodiments 1-2, the guide strip 3 and the lower seat plate 2 have a point-to-surface contact method. In specific embodiment 3, the guide strip 3 and the lower seat plate 2 form a face-to-face contact method, which increases the contact area of ​​the lower seat plate 2 during rotation. This ensures that the lower seat plate 2 will not deviate during rotation while improving the load-bearing capacity of the sliding pair.

[0043] The connector includes a rotating shaft 9, a connecting plate 10, and fixing bolts 11. The connecting plate 10 and fixing bolts 11 are symmetrically arranged at both ends of the guide strip 3 along the axial direction. The connecting plate 10 is fixedly connected to the side wall of the lower seat plate 2 by means of the fixing bolts 11. The rotating shaft 9 passes through the guide strip 3 in a direction parallel to the central axis of the guide strip 3. The two ends of the rotating shaft 9 are rotatably connected to the connecting plates 10 on both sides respectively. The lower seat plate 2 has a degree of freedom of rotation relative to the guide strip 3 by means of the rotating shaft 9. The connector structure in embodiment 3 is more robust, and this connection method also facilitates the replacement of the sliding pair. Only by removing the fixing bolts 11 on the connecting plates 10 on both sides can the damaged sliding plate be removed and a new sliding pair be replaced.

[0044] In addition, in specific embodiments 1-3, the contact surfaces of the guide strip 3 and the lower seat plate 2 can be treated by chrome plating or other methods to improve the load-bearing capacity of the sliding pair.

Claims

1. A quick-change sliding pair spherical support, comprising an upper seat plate (1), a lower seat plate (2), and a spherical crown plate assembly located between the bottom of the upper seat plate (1) and the top of the lower seat plate (2), wherein a sliding pair is clamped between the sidewalls of the upper seat plate (1) and the lower seat plate (2), characterized in that, The sliding pair includes a guide bar (3) and a sliding grinding element. The guide bar (3) is oscillatingly connected to the lower seat plate (2) by means of a connecting element. The oscillating friction side of the guide bar (3) contacts the lower seat plate (2) to form oscillating friction. The translational friction side of the guide bar (3) abuts against the upper seat plate (1) by means of the sliding grinding element and forms sliding friction with the upper seat plate (1).

2. The quick-change sliding pair spherical support according to claim 1, characterized in that, The sliding grinding component includes two sets of plate-shaped grinding plates (4). One set of grinding plates (4) is disposed on the inner side wall of the upper seat plate (1), and the other set of grinding plates (4) is disposed on the translational friction side of the guide strip (3). The two sets of grinding plates (4) abut against each other and form sliding friction.

3. The quick-change sliding pair spherical support according to claim 1, characterized in that, The lower seat plate (2) is provided with an indented groove at the shoulder corner, and the swing friction side of the guide strip (3) is in convex-concave fit with the groove of the lower seat plate (2) and swings.

4. A quick-change sliding pair spherical support according to claim 1, characterized in that, The guide bar (3) has a cuboid structure, and the swing friction side of the guide bar (3) has a raised arch structure. The guide bar (3) and the lower seat plate (2) are respectively provided with an upper blind hole (5) and a lower blind hole (6) in the vertical direction. The opening sides of the upper blind hole (5) and the lower blind hole (6) are aligned and form an installation chamber for the connector.

5. A quick-change sliding pair spherical support according to claim 4, characterized in that, The connector is a pin (7). The pin (7) is located in the mounting cavity and its two ends are respectively connected to the upper blind hole (5) and the lower blind hole (6). The diameter of the upper blind hole (5) gradually increases from the opening side to the deep side. The gap between the deep side wall of the upper blind hole (5) and the pin (7) forms a movable space for the pin (7) to swing. The lower seat plate (2) swings relative to the guide strip (3) by means of the movable space.

6. A quick-change sliding pair spherical support according to claim 4, characterized in that, The connecting component is a spring (8), which is located in the mounting cavity and its two ends are respectively connected to the upper blind hole (5) and the lower blind hole (6). The lower seat plate (2) has the freedom to swing relative to the guide bar (3) by means of the spring (8).

7. A quick-change sliding pair spherical support according to claim 1, characterized in that, The guide bar (3) has a fan-shaped structure. The surface of the guide bar (3) with the swing friction side has an arc-shaped structure and forms a curved surface with a fan-shaped structure. The surface of the guide bar (3) with the translation friction side has a planar structure and forms a planar surface with a fan-shaped structure.

8. A quick-change sliding pair spherical support according to claim 7, characterized in that, The connector includes a rotating shaft (9), a connecting plate (10), and a fixing bolt (11). The connecting plate (10) and the fixing bolt (11) are symmetrically arranged at both ends of the guide bar (3) along the axial direction. The connecting plate (10) is fixedly connected to the side wall of the lower seat plate (2) by means of the fixing bolt (11). The rotating shaft (9) passes through the guide bar (3) in a direction parallel to the central axis of the guide bar (3). The two ends of the rotating shaft (9) are rotatably connected to the connecting plates (10) on both sides respectively. The lower seat plate (2) has a degree of freedom to swing relative to the guide bar (3) by means of the rotating shaft (9).

9. A quick-change sliding pair spherical support according to claim 1, characterized in that, The crown plate assembly includes a flat sliding plate (12), a crown liner (13), and a spherical sliding plate (14) arranged sequentially from top to bottom. The crown liner (13) has a flat convex lens-shaped structure, and the convex side of the crown liner (13) faces downward and forms a concave-convex fit with the spherical sliding plate (14).

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