Long-acting wear-resistant support suitable for urban rail transit

Abstract

The utility model relates to the technical field of bridge parts, and discloses a long-acting wear-resistant support suitable for urban rail transit, which comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a wear-resistant plate, the upper surface of the wear-resistant plate is fixedly connected with two positioning blocks, and the upper surface of the bottom plate is fixedly connected with two positioning frames. A two-way threaded rod is rotatably connected between the two positioning frames, the front end of the two-way threaded rod rotatably penetrates out of the front side surface of the front side positioning frame, and the outer surfaces of two sections of different threads of the two-way threaded rod are sleeved with two connecting blocks in a threaded mode. Sliding friction between the upper adjusting block and the lower adjusting block is converted into rolling friction, friction force is reduced, more labor and labor are saved when the two-way threaded rod is rotated, the practicability of the support is further improved, and the stability and practicability of urban rail transit are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge parts, in particular to a long-lasting wear-resistant bearing suitable for urban rail transit. Background Art

[0002] With the continuous development of urban bridge construction technology, the number of railway bridge and urban rail bridge construction projects has increased, and the application of bridge bearings has become more and more extensive.

[0003] At present, the problem of bridge foundation settlement is often solved by adjusting the height of the bearings, and the height adjustment of the bearings is used to compensate for the settlement of the foundation to ensure the overall shape of the bridge and the smoothness of the line. The existing bearing height adjustment usually adopts the method of adding or replacing pads on the bearings, or adding a pair of wedge steel pads on the bearings to adjust the height, or setting pipes in the bottom plate of the bearings to pump rubber to adjust the height. However, these methods have defects: when the height is increased by adding or replacing pads on the bearings, the steel pads need to be processed according to the height adjustment size, and a jack is required to support the beam, which is difficult to operate; when the height is increased by adding wedges on the bearings, the wedges are too large in size and heavy in weight, and a jack is required to support the beam, which is difficult to process and operate; when the filling height adjustment method is adopted, since the injection pipe for height adjustment can only be used once, multiple injection pipes need to be set for multiple height adjustments.

[0004] Existing existing public patent: CN201721573370.X discloses a height-adjustable steel support for a maglev rail transit bridge. This patent uses two symmetrical inclined surfaces of the adjustment block to decompose the lifting force of the height adjustment into smaller horizontal forces when adjusting the height, and at the same time converts the height adjustment into an easy-to-operate horizontal adjustment method. The adjustment screw drives the adjustment block to move to meet the height adjustment requirements of the support, so that the support height can be arbitrarily adjusted within a certain range, and the adjustment can be repeated multiple times.

[0005] However, this patent drives the adjusting block to slide by rotating the adjusting screw, thereby pushing the support up, and the overall weight of the support is very heavy, so the friction between the adjusting block and the support is relatively large, and thus a large force is required to rotate the adjusting screw to push the adjusting block, which is relatively laborious and has poor practicality. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] In view of the deficiencies in the prior art, the utility model provides a long-lasting wear-resistant bearing suitable for urban rail transit, which has the advantages of converting the sliding friction between the upper and lower adjusting blocks into rolling friction through the contact between the upper surface of the rotating block and the lower adjusting block, thereby reducing the friction force, making the rotation of the bidirectional threaded rod more labor-saving, saving manpower, thereby increasing the practicality of the bearing, and thereby increasing the stability and practicality of urban rail transit, etc., and solves the problem that the patent drives the adjusting block to slide by rotating the adjusting screw and then pushes the bearing to rise, while the overall weight of the bearing is very heavy, and the friction between the adjusting block and the bearing is large, and thus the rotating adjusting screw requires a large force to achieve the pushing of the adjusting block, which is relatively laborious and thus has poor practicality.

[0008] (II) Technical solution

[0009] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a long-term wear-resistant bearing suitable for urban rail transit, comprising a base plate, the upper surface of the base plate is fixedly connected to a wear-resistant plate, the upper surface of the wear-resistant plate is fixedly connected to two positioning blocks, the upper surface of the base plate is fixedly connected to two positioning frames, a bidirectional threaded rod is rotatably connected between the two positioning frames, the front end of the bidirectional threaded rod rotates and passes through the front surface of the front positioning frame, and the outer surface thread sleeves of two sections of different threads of the bidirectional threaded rod are provided with two connecting blocks.

[0010] Preferably, the two connecting blocks are slidably connected to the two positioning blocks, an upper adjusting block is fixedly connected to the upper surface of the connecting block, a vertical section of the upper adjusting block is a right triangle, and an upper surface of the upper adjusting block is an inclined surface.

[0011] Preferably, a connecting groove is provided on the upper surface of the upper adjustment block, and the inner walls on the left and right sides of the connecting groove are rotatably connected to support rods, and a rotating block is fixedly sleeved on the outer surface of the support rod, and the upper surface of the rotating block extends out of the upper surface of the upper adjustment block through the connecting groove.

[0012] Preferably, the two upper adjustment blocks are arranged in a mirror image, the upper surfaces of the two upper adjustment blocks are provided with lower adjustment blocks, the lower surfaces of the lower adjustment blocks are in contact with the upper surface of the rotating block, and the vertical section of the lower adjustment block is in the shape of an isosceles triangle.

[0013] Preferably, the lower adjustment block is adapted to the upper adjustment block, the upper surface of the lower adjustment block is fixedly connected with a concave block, a curved lining plate is arranged on the concave block, and an upper support assembly is arranged on the upper surface of the curved lining plate.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a long-lasting wear-resistant bearing suitable for urban rail transit, which has the following beneficial effects:

[0016] 1. The invention is suitable for long-lasting wear-resistant bearings for urban rail transit. During the upward displacement of the two upper adjusting blocks, the rotating block drives the thrust to the lower adjusting block, causing the lower adjusting block to displace upward. During the displacement, the rotating block rolls, causing rolling friction between the lower adjusting block and the rotating block. The upper surface of the rotating block contacts the lower adjusting block, converting the sliding friction between the upper adjusting block and the lower adjusting block into rolling friction, thereby reducing friction and making the rotation of the bidirectional threaded rod more labor-saving, saving manpower, and increasing the practicality of the bearing, thereby increasing the stability and practicality of urban rail transit.

[0017] 2. This is a long-lasting wear-resistant bearing suitable for urban rail transit. The two positioning blocks limit the movement trajectory of the connecting block, so that the two connecting blocks can only move in relative or opposite directions without rotation or swinging, thereby increasing the displacement stability of the two upper adjustment blocks, and then simultaneously increasing the stability of the upper and lower adjustment displacement of the bearing, thereby increasing the stability and practicality of urban rail transit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a long-lasting wear-resistant bearing suitable for urban rail transit in the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the rotating block of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the lower regulating block of the utility model;

[0021] Figure 4 This is a schematic diagram of the overall planar structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the rotating block of the utility model.

[0023] In the figure: 1. bottom plate; 2. wear-resistant plate; 3. positioning frame; 4. upper support assembly; 5. connecting block; 6. upper adjustment block; 7. positioning block; 8. connecting groove; 9. support rod; 10. rotating block; 11. bidirectional threaded rod; 12. lower adjustment block; 13. concave block; 14. curved lining plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-5The utility model provides a new technical solution: a long-term wear-resistant bearing suitable for urban rail transit, comprising a base plate 1, a wear-resistant plate 2 is fixedly connected to the upper surface of the base plate 1, two positioning blocks 7 are fixedly connected to the upper surface of the wear-resistant plate 2, two positioning frames 3 are fixedly connected to the upper surface of the base plate 1, a bidirectional threaded rod 11 is rotatably connected between the two positioning frames 3, the front end of the bidirectional threaded rod 11 rotates through the front surface of the front positioning frame 3, two sections of the outer surface of the bidirectional threaded rod 11 with different threads are threadedly sleeved with two connecting blocks 5, the two connecting blocks 5 are slidably connected to the two positioning blocks 7, the upper surface of the connecting block 5 is fixedly connected with an upper adjusting block 6, the vertical section of the upper adjusting block 6 is a right triangle, the upper surface of the upper adjusting block 6 is an inclined surface, the upper surface of the upper adjusting block 6 is provided with a connecting groove 8, the left and right sides of the connecting groove 8 A number of support rods 9 are rotatably connected to the inner wall of the side, and a rotating block 10 is fixedly sleeved on the outer surface of the support rod 9. The upper surface of the rotating block 10 extends out of the upper surface of the upper adjustment block 6 through the connecting groove 8. The two upper adjustment blocks 6 are arranged in a mirror image, and the upper surfaces of the two upper adjustment blocks 6 are provided with a lower adjustment block 12. The lower surface of the lower adjustment block 12 contacts the upper surface of the rotating block 10, and the vertical section of the lower adjustment block 12 is in the shape of an isosceles triangle. The lower adjustment block 12 is adapted to the upper adjustment block 6. The upper surface of the lower adjustment block 12 is fixedly connected with a concave block 13, and a curved lining plate 14 is arranged on the concave block 13. The upper surface of the curved lining plate 14 is provided with an upper support assembly 4. The curved lining plate 14, the upper support assembly 4, and the concave block 13 are all prior arts in the existing public patent CN201721573370.X, which will not be elaborated here.

[0026] Furthermore, when the two-way threaded rod 11 is rotated, the rotation of the two-way threaded rod 11 drives the two upper adjusting blocks 6 to move in relative or opposite directions, and the two upper adjusting blocks 6 are brought closer to or farther away from each other during the displacement process. When the two upper adjusting blocks 6 are close to each other, the two upper adjusting blocks 6 simultaneously give an upward thrust to the lower adjusting block 12. During the upward displacement of the two upper adjusting blocks 6, the rotating block 10 drives the thrust to the lower adjusting block 12, so that the lower adjusting block 12 moves upward. During the displacement process, the rotating block 10 rolls, and then the lower adjusting block 12 and the rotating block 10 have rolling friction. In this solution, the upper surface of the rotating block 10 contacts the lower adjusting block 12, and the sliding friction between the upper adjusting block 6 and the lower adjusting block 12 is converted into rolling friction, thereby reducing friction, making the rotation of the two-way threaded rod 11 more labor-saving and manpower-saving, thereby increasing the practicality of the support, and thereby increasing the stability and practicality of urban rail transit.

[0027] Furthermore, the two positioning blocks 7 limit the movement trajectory of the connecting block 5, so that the two connecting blocks 5 can only be displaced in relative or opposite directions without rotation or swinging, thereby increasing the stability of the displacement of the two upper adjustment blocks 6, and simultaneously increasing the stability of the up and down adjustment displacement of the support, thereby increasing the stability and practicality of urban rail transit.

[0028] Working principle: When the device is used, by rotating the bidirectional threaded rod 11, the bidirectional threaded rod 11 rotates and drives the two upper adjustment blocks 6 to move in relative or opposite directions. During the displacement process, the two upper adjustment blocks 6 are brought closer to or farther away from each other. When the two upper adjustment blocks 6 are close to each other, the two upper adjustment blocks 6 simultaneously give an upward thrust to the lower adjustment block 12. During the upward displacement of the two upper adjustment blocks 6, the rotating block 10 drives the thrust to the lower adjustment block 12, so that the lower adjustment block 12 moves upward. During the displacement process, the rotating block 10 rolls, and then the lower adjustment block 12 and the rotating block 10 have rolling friction. In this solution, the upper surface of the rotating block 10 contacts the lower adjustment block 12, and the sliding friction between the upper adjustment block 6 and the lower adjustment block 12 is converted into rolling friction, thereby reducing friction, making the rotation of the bidirectional threaded rod 11 more labor-saving, saving manpower, and thereby increasing the practicality of the support.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A long-lasting wear-resistant bearing suitable for urban rail transit, comprising a base plate (1), characterized in that: The upper surface of the base plate (1) is fixedly connected to a wear-resistant plate (2), the upper surface of the wear-resistant plate (2) is fixedly connected to two positioning blocks (7), the upper surface of the base plate (1) is fixedly connected to two positioning frames (3), a bidirectional threaded rod (11) is rotatably connected between the two positioning frames (3), the front end of the bidirectional threaded rod (11) rotatably penetrates the front surface of the front positioning frame (3), and two sections of the outer surface of the bidirectional threaded rod (11) with different threads are threadedly sleeved with two connecting blocks (5).

2. The long-lasting wear-resistant bearing suitable for urban rail transit according to claim 1, characterized in that: The two connecting blocks (5) are slidably connected to the two positioning blocks (7); an upper adjusting block (6) is fixedly connected to the upper surface of the connecting block (5); the vertical section of the upper adjusting block (6) is a right triangle; and the upper surface of the upper adjusting block (6) is an inclined surface.

3. The long-lasting wear-resistant bearing suitable for urban rail transit according to claim 2, characterized in that: The upper surface of the upper adjustment block (6) is provided with a connection groove (8), the inner walls on the left and right sides of the connection groove (8) are rotatably connected with support rods (9), the outer surface of the support rod (9) is fixedly sleeved with a rotation block (10), and the upper surface of the rotation block (10) extends out of the upper surface of the upper adjustment block (6) through the connection groove (8).

4. The long-lasting wear-resistant bearing suitable for urban rail transit according to claim 3 is characterized by: The two upper adjustment blocks (6) are arranged in a mirror image, and the upper surfaces of the two upper adjustment blocks (6) are provided with lower adjustment blocks (12). The lower surfaces of the lower adjustment blocks (12) are in contact with the upper surface of the rotating block (10), and the vertical section of the lower adjustment block (12) is in the shape of an isosceles triangle.

5. The long-lasting wear-resistant bearing suitable for urban rail transit according to claim 4, characterized in that: The lower adjustment block (12) is adapted to the upper adjustment block (6); the upper surface of the lower adjustment block (12) is fixedly connected to a concave block (13); a curved lining plate (14) is arranged on the concave block (13); and an upper support assembly (4) is arranged on the upper surface of the curved lining plate (14).

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