A bridge expansion device for bridge construction

Abstract

The utility model discloses a bridge expansion device for bridge construction, comprising a fixed seat, a connecting plate and a fixed plate. The bridge expansion device for bridge construction, the fixed seat is connected by the connecting plate in cooperation with a threaded rod and a nut, wherein a deformation buffer is formed by the cooperation of a second elastic gasket and a third elastic gasket, and at the same time, the first connecting tooth member and the second connecting tooth member are connected by sliding through a slide groove and a slider to form left and right deformation expansion, and the first connecting tooth member and the second connecting tooth member are installed on the fixed plate by the cooperation of the mounting seat and the connecting shaft, so that up and down deformation expansion can be formed, and the first connecting tooth member and the second connecting tooth member can move forward and backward along the connecting shaft under the cooperation of the first elastic gasket, so as to form front and back deformation expansion. Therefore, the device can effectively form a buffer for the deformation of the expansion joint, and while buffering, the connection between the first connecting tooth member and the second connecting tooth member and the fixed plate is always kept flush, avoiding the problem of edge warping.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion joints, in particular to a bridge expansion device used for bridge construction. Background Art

[0002] During the construction of a bridge, it is necessary to install a bridge expansion device between the two sections of the bridge body. While maintaining the strength of the bridge, it also meets the needs of thermal expansion and contraction of the bridge itself. The bridge expansion device refers to a expansion device that is usually installed between the two beam ends, between the beam end and the abutment, or at the hinged position of the bridge to meet the requirements of bridge deck deformation.

[0003] In the prior art with publication (announcement) number: CN218596902U and publication (announcement) date: 2023-03-10, a bridge telescopic device for bridge construction is proposed, including two side beams, two sliding grooves are opened on the front and rear parts of the two side beams relative to each other, and the four horizontal sliding grooves are slidably connected with a telescopic mechanism. The two side beams are slidably connected with an adjustment mechanism through an adjustment groove. The upper left end of the adjustment mechanism located on the right is fixedly connected with two sleeves, and the middle part of the right wall of the two sleeves is fixedly connected with a No. 1 spring, and the left ends of the two No. 1 springs are fixedly connected with a connecting rod, and the two adjustment mechanisms are plugged and connected with a protective support seat. The bridge telescopic device for bridge construction described in the utility model is convenient to shrink as the bridge deforms, is not easy to age after long-term use, and has a longer service life. It is convenient to adjust the height and install according to the main beams of different heights, thereby improving practicality.

[0004] However, in the above-mentioned prior art, the protective support seat is an integral design. When the bridge expansion joint is deformed, the edge of the protective support seat will be lifted up, which may cause tire damage when a vehicle passes by. Therefore, a bridge expansion device for bridge construction is proposed to optimize the above-mentioned prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a bridge expansion device for bridge construction to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A bridge expansion device for bridge construction comprises an expansion mechanism arranged in an expansion joint on a bridge body, the expansion mechanism comprises fixed plates symmetrically arranged on both sides of the expansion joint, mounting seats are fixedly connected at equal distances on opposite sides of the fixed plates, connecting shafts are fixedly connected through the corresponding mounting seats, a first connecting tooth member and a second connecting tooth member are rotatably connected to the connecting shaft, the teeth of the second connecting tooth member and the teeth of the first connecting tooth member are staggered and fit with each other for sliding, sliding grooves are provided on the fitting sides of the second connecting tooth member and the first connecting tooth member, sliding blocks are fixedly connected at the ends of the teeth of the second connecting tooth member and the first connecting tooth member corresponding to the sliding grooves, the sliding blocks are inserted into the sliding grooves and are slidably connected to the sliding grooves, a first elastic gasket is provided between the second connecting tooth member and the first connecting tooth member and the mounting seat, and the first elastic gasket is sleeved on the outside of the connecting shaft.

[0008] As a further solution of the utility model: the telescopic mechanism also includes symmetrically arranged fixing seats, and the fixing seats are evenly fixedly connected with anchor bars on one side away from each other, and the anchor bars are embedded in the bridge body to form a connection and fixation.

[0009] As a further solution of the utility model: the fixing plate is fixedly mounted on the top surface of the fixing seat by bolts, the fixing plate is provided with countersunk holes for the bolts to pass through, and the fixing seat is provided with threaded holes for the bolts to be threadedly connected.

[0010] As a further solution of the utility model: two connecting plates are fixedly connected in parallel on opposite sides of the fixing seat, the connecting plates are staggered, and threaded rods are evenly and movably penetrated between two adjacent connecting plates. Circular holes for the threaded rods to penetrate are opened on the connecting plates, and the diameter of the circular holes is larger than the diameter of the threaded rods. Nuts are threadedly connected to the ends of the threaded rods, and second elastic gaskets are symmetrically sleeved on both ends of the threaded rods, and the second elastic gaskets are arranged between the nuts and the relative connecting plates. A third elastic gasket is also sleeved on the middle part of the threaded rod, and the third elastic gasket is arranged between the corresponding connecting plates.

[0011] As a further solution of the utility model: rectangular grooves are provided in the middle of the connecting plate at equal distances corresponding to the first connecting tooth member and the second connecting tooth member, and the rectangular grooves can be used for drainage of water leakage. The top surface of the top connecting plate is evenly fixedly connected with a fourth elastic gasket, and the fourth elastic gasket respectively rests against the bottom surfaces of the first connecting tooth member and the second connecting tooth member.

[0012] As a further solution of the utility model: a connecting bridge is also provided between the top surfaces of the fixing seats, and countersunk holes for bolts to pass through are symmetrically provided at both ends of the connecting bridge. The connecting bridge is fixed to the fixing seat by bolts, and the threaded holes on the fixing seat used for connecting the connecting bridge are the same as the threaded holes used for connecting the connecting plates, and the bottom surface of the connecting bridge is symmetrically fixedly connected with a limit stopper, which fits the edge of the fixing seat.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The fixing seat of the utility model is connected by a connecting plate in conjunction with a threaded rod and a nut, wherein a deformation buffer is formed by the cooperation of the second elastic gasket and the third elastic gasket, and at the same time, the first connecting tooth piece and the second connecting tooth piece are connected by sliding through a sliding groove and a slider to form left and right deformation and expansion, and the first connecting tooth piece and the second connecting tooth piece are installed on the fixing plate by the cooperation of the mounting seat and the connecting shaft, so that up and down deformation and expansion can be formed, and the first connecting tooth piece and the second connecting tooth piece can move forward and backward along the connecting shaft with the cooperation of the first elastic gasket, so as to form front and back deformation and expansion. Therefore, the device can effectively form a buffer for the deformation of the expansion joint, and while buffering, the connection between the first connecting tooth piece and the second connecting tooth piece and the fixing plate is always kept flush, avoiding the problem of edge warping.

[0015] 2. The utility model provides the fourth spring washer, so that the connecting plate forms an auxiliary support on the bottom surface of the first connecting tooth member and the second connecting tooth member, thereby improving the stability of the first connecting tooth member and the second connecting tooth member.

[0016] 3. The utility model provides a connecting bridge in combination with a limit stopper, and during initial installation, the two fixing seats of the device can be connected into an integral fixed structure through the connecting bridge to avoid misalignment during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a structural schematic diagram of a bridge expansion device used for bridge construction.

[0018] Figure 2 This is a diagram showing a telescopic mechanism in a bridge telescopic device used for bridge construction.

[0019] Figure 3 This is a side view of a bridge expansion device used for bridge construction.

[0020] Figure 4 The present invention is a connection diagram of a connecting bridge in a bridge expansion device used for bridge construction.

[0021] Figure 5 The present invention is a bottom view of a connecting bridge in a bridge expansion device used for bridge construction.

[0022] In the figure: 1. Bridge body; 2. Expansion joint; 3. Expansion mechanism; 4. Fixed plate; 5. Mounting seat; 6. Connecting shaft; 7. First connecting tooth member; 8. Second connecting tooth member; 9. Slide groove; 10. Sliding block; 11. First elastic gasket; 12. Fixed seat; 13. Anchor rib; 14. Connecting plate; 15. Threaded rod; 16. Second elastic gasket; 17. Third elastic gasket; 18. Fourth elastic gasket; 19. Connecting bridge; 20. Limit block; 21. Nut. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figures 1 to 3 In an embodiment of the utility model, a bridge expansion device for bridge construction includes an expansion mechanism 3 arranged in an expansion joint 2 on a bridge body 1, the expansion mechanism 3 includes fixed plates 4 symmetrically arranged on both sides of the expansion joint 2, and mounting seats 5 are fixedly connected to the opposite sides of the fixed plates 4 at equal distances, and a connecting shaft 6 is fixedly connected to the corresponding mounting seats 5, and a first connecting toothed member 7 and a second connecting toothed member 8 are rotatably connected to the connecting shaft 6, respectively. The first connecting toothed member 7 and the second connecting toothed member 8 are provided with round holes for the connecting shaft 6 to pass through, and the first connecting toothed member 7 and the second connecting toothed member 8 can form a sliding effect while rotating on the connecting shaft 6 through the cooperation of the round holes. The first connecting tooth piece 7 and the second connecting tooth piece 8 are connected to one end of the connecting shaft 6 and are set in an arc. The teeth of the second connecting tooth piece 8 and the teeth of the first connecting tooth piece 7 are staggered and fit together and slide. The fitting sides of the second connecting tooth piece 8 and the first connecting tooth piece 7 are provided with a slide groove 9. The ends of the teeth of the second connecting tooth piece 8 and the first connecting tooth piece 7 are fixedly connected with a slider 10 corresponding to the slide groove 9. The slider 10 is inserted into the slide groove 9 and is slidably connected with the slide groove 9. A first elastic gasket 11 is provided between the second connecting tooth piece 8 and the first connecting tooth piece 7 and the mounting seat 5. The first elastic gasket 11 is sleeved on the outside of the connecting shaft 6, and the two side edges of the second connecting tooth piece 8 are fixedly connected with extension blocks.

[0025] The telescopic mechanism 3 also includes a symmetrically arranged fixed seat 12, and the fixed seat 12 is evenly fixedly connected with an anchor rib 13 on one side away from each other. The anchor rib 13 is embedded in the bridge body 1 to form a connection and fixation. The fixed seat 12 is respectively fitted with both sides of the expansion joint 2, and the top surface of the expansion joint 2 is also provided with an avoidance groove corresponding to and adapted to the fixed plate 4.

[0026] The fixing plate 4 is fixedly mounted on the top surface of the fixing seat 12 by means of bolts. The fixing plate 4 is provided with countersunk holes for the bolts to penetrate, and the fixing seat 12 is provided with threaded holes for the bolts to be threadedly connected.

[0027] Two connecting plates 14 are fixedly connected in parallel on opposite sides of the fixing seat 12. The connecting plates 14 are staggered. Threaded rods 15 are evenly and movably penetrated between two adjacent connecting plates 14. Circular holes for the threaded rods 15 to penetrate are opened on the connecting plates 14. The diameter of the circular holes is larger than the diameter of the threaded rods 15. Nuts 21 are threadedly connected to the ends of the threaded rods 15. Second elastic gaskets 16 are symmetrically sleeved at both ends of the threaded rods 15. The second elastic gaskets 16 are arranged between the nuts 21 and the relative connecting plates 14. A third elastic gasket 17 is also sleeved in the middle of the threaded rods 15. The third elastic gasket 17 is arranged between the corresponding connecting plates 14.

[0028] The fixing seat 12 is connected by the connecting plate 14 in cooperation with the threaded rod 15 and the nut 21, wherein the deformation buffer is formed by the cooperation of the second elastic gasket 16 and the third elastic gasket 17, and at the same time, the first connecting tooth piece 7 and the second connecting tooth piece 8 are connected by sliding through the slide groove 9 and the slider 10 to form left and right deformation and expansion, and the first connecting tooth piece 7 and the second connecting tooth piece 8 are installed on the fixing plate 4 by the cooperation of the mounting seat 5 and the connecting shaft 6, so that the up and down deformation and expansion can be formed, and the first connecting tooth piece 7 and the second connecting tooth piece 8 can move forward and backward along the connecting shaft 6 under the cooperation of the first elastic gasket 11, so as to form the front and back deformation and expansion. Therefore, the device can effectively form a buffer for the deformation of the expansion joint, and at the same time, the connection between the first connecting tooth piece 7 and the second connecting tooth piece 8 and the fixing plate 4 is always kept flush, avoiding the problem of edge warping.

[0029] A rectangular groove is opened in the middle of the connecting plate 14 at equal distances corresponding to the first connecting tooth 7 and the second connecting tooth 8, and the rectangular groove can be used for drainage. The top surface of the top connecting plate 14 is evenly fixedly connected with a fourth elastic gasket 18, and the fourth elastic gasket 18 is respectively against the bottom surfaces of the first connecting tooth 7 and the second connecting tooth 8.

[0030] By disposing the fourth spring washer 18 , auxiliary support is formed on the bottom surfaces of the first connecting tooth member 7 and the second connecting tooth member 8 through the connecting plate 14 , thereby improving the stability of the first connecting tooth member 7 and the second connecting tooth member 8 .

[0031] See also Figures 4-5 In an embodiment of the utility model, a bridge expansion device for bridge construction is provided, and a connecting bridge 19 is provided between the top surfaces of the fixing seat 12, and countersunk holes for bolts to pass through are symmetrically provided at both ends of the connecting bridge 19, and the connecting bridge 19 is fixedly installed with the fixing seat 12 by bolts, and the threaded holes on the fixing seat 12 for connecting the connecting bridge 19 are the same as the threaded holes for connecting the connecting plate 14, and the bottom surface of the connecting bridge 19 is symmetrically fixedly connected with a limit stopper 20, and the limit stopper 20 is in contact with the edge of the fixing seat 12.

[0032] By providing the connecting bridge 19 in cooperation with the limit stopper 20 , the two fixing seats 12 of the device can be connected into an integral fixed structure through the connecting bridge 19 during initial installation, thereby avoiding misalignment during installation.

[0033] The working principle of the utility model is:

[0034] When in use, the fixing seat 12 is connected by the connecting bridge 19 in conjunction with the bolts. At this time, the limit block 20 is against the edge of the fixing seat 12 to form a limit, so that the two fixing seats 12 are fixed to form a whole. At this time, the fixing seat 12 is fixed and installed by the anchor rib 13 when the expansion joint 2 is constructed. After installation, the connecting bridge 19 can be disassembled, and the fixing plate 4 is fixedly installed on the fixing seat 12 by bolts. At this time, the fixing seat 12 is connected by the connecting plate 14 in conjunction with the threaded rod 15 and the nut 21, wherein the second elastic gasket 16 and the third elastic gasket 17 are used. The cooperation forms a deformation buffer. During the buffering, the threaded rod 15 can move up and down, left and right, and front and back in the circular hole on the connecting plate 14. At the same time, the first connecting tooth piece 7 and the second connecting tooth piece 8 are connected by sliding through the slide groove 9 and the slider 10 to form left and right deformation and expansion. The first connecting tooth piece 7 and the second connecting tooth piece 8 are installed on the fixed plate 4 through the cooperation of the mounting seat 5 and the connecting shaft 6, so that the up and down deformation and expansion can be formed. The first connecting tooth piece 7 and the second connecting tooth piece 8 can move forward and backward along the connecting shaft 6 with the cooperation of the first elastic gasket 11, so as to form front and back deformation and expansion. Therefore, the device can effectively buffer the deformation of the expansion joint. During the buffering, the connection between the first connecting tooth piece 7 and the second connecting tooth piece 8 and the fixed plate 4 is always kept flush, avoiding the problem of edge warping.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bridge expansion device for bridge construction, comprising an expansion mechanism (3) arranged in an expansion joint (2) on a bridge body (1), characterized in that: The telescopic mechanism (3) comprises a fixed plate (4) symmetrically arranged on both sides of the expansion joint (2), and mounting seats (5) are fixedly connected to the opposite sides of the fixed plate (4) at equal distances, and a connecting shaft (6) is fixedly connected to the corresponding mounting seats (5) through which a common connecting shaft (6) passes, and the connecting shaft (6) is rotatably connected to a first connecting toothed member (7) and a second connecting toothed member (8), and the teeth of the second connecting toothed member (8) and the teeth of the first connecting toothed member (7) are staggered and fit to slide with each other, and the second connecting toothed member (8) A sliding groove (9) is provided on the mating side with the first connecting tooth piece (7); a sliding block (10) is fixedly connected to the end of the second connecting tooth piece (8) and the first connecting tooth piece (7) at the corresponding sliding groove (9); the sliding block (10) is inserted into the sliding groove (9) and is slidably connected to the sliding groove (9); a first elastic gasket (11) is provided between the second connecting tooth piece (8) and the first connecting tooth piece (7) and the mounting seat (5); and the first elastic gasket (11) is sleeved on the outer side of the connecting shaft (6).

2. The bridge expansion device for bridge construction according to claim 1, characterized in that: The telescopic mechanism (3) further comprises symmetrically arranged fixing seats (12), and the fixing seats (12) are evenly fixedly connected with anchoring bars (13) on one side away from each other.

3. The bridge expansion device for bridge construction according to claim 2, characterized in that: The fixing plate (4) is fixedly mounted on the top surface of the fixing seat (12) by means of bolts.

4. The bridge expansion device for bridge construction according to claim 2, characterized in that: Two connecting plates (14) are parallelly fixedly connected to opposite sides of the fixing seat (12); the connecting plates (14) are arranged in a staggered manner; threaded rods (15) are uniformly and movably penetrated between two adjacent connecting plates (14); nuts (21) are threadedly connected to the ends of the threaded rods (15); second elastic gaskets (16) are symmetrically sleeved at both ends of the threaded rods (15); the second elastic gaskets (16) are arranged between the nuts (21) and the opposite connecting plates (14); a third elastic gasket (17) is sleeved in the middle of the threaded rods (15); and the third elastic gasket (17) is arranged between the corresponding connecting plates (14).

5. The bridge expansion device for bridge construction according to claim 4, characterized in that: A rectangular groove is provided in the middle of the connecting plate (14) at equal distances from the first connecting tooth piece (7) and the second connecting tooth piece (8), and a fourth elastic gasket (18) is evenly fixedly connected to the top surface of the top connecting plate (14), and the fourth elastic gasket (18) is respectively against the bottom surface of the first connecting tooth piece (7) and the second connecting tooth piece (8).

6. The bridge expansion device for bridge construction according to claim 2, characterized in that: A connecting bridge (19) is also provided between the top surfaces of the fixing seat (12), the connecting bridge (19) being fixedly mounted to the fixing seat (12) by means of bolts, the bottom surface of the connecting bridge (19) being symmetrically fixedly connected to a limit stopper (20), the limit stopper (20) being in contact with the edge of the fixing seat (12).

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