Bridge expansion device for bridge construction

Abstract

The bridge expansion device comprises H-shaped steel, a first steel plate, a threaded rod, a supporting table and a second steel plate, clamping blocks are fixedly installed at the bottoms of the H-shaped steel, the second steel plate is supported in the clamping blocks, the first steel plate is fixedly connected between the two H-shaped steel, and the threaded rod is fixedly connected between the first steel plate and the second steel plate. The screw rod is installed in the middle of the first steel plate, nuts are fixedly connected to the top of the second steel plate and the top of the first steel plate, and the screw rod is installed in the two nuts through matching of internal threads and external threads; according to the bridge expansion and contraction device for bridge construction, through precise matching of the screw rods and the nuts, the expansion and contraction distance can be precisely adjusted, expansion and contraction deformation of a bridge caused by temperature changes and vehicle loads can be effectively adapted, and safety and stability of a bridge structure are ensured. And through the combined arrangement of the supporting table and the sliding piece, the device is stable in action in the stretching and retracting process, vibration and noise are reduced, and the driving comfort and safety are improved.

Description

Technical Field

[0001] This utility model relates to the field of calibration tooling technology, specifically a bridge expansion joint for bridge construction. Background Technology

[0002] In bridge engineering, especially in areas with large temperature differences or on bridges bearing heavy traffic loads, the treatment of bridge expansion joints is crucial because bridges expand and contract under different seasons and load conditions. Traditional bridge expansion joints have several shortcomings, such as inconvenient adjustment, poor adaptability, susceptibility to damage, high maintenance costs, and inability to effectively adapt to complex bridge displacements. These problems can lead to safety hazards in the bridge structure, affecting traffic safety and the bridge's lifespan.

[0003] Most existing bridge expansion joints use simple mechanical structures, such as springs, slide rails, or fixed-length connectors. These designs are prone to fatigue fractures, wear, or jamming under long-term use, especially in extreme weather conditions, such as high or low temperatures. The performance of these devices will be greatly reduced and they cannot adapt well to the expansion and contraction of the bridge. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of the existing technology by providing a bridge expansion joint for bridge construction, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A bridge expansion joint for bridge construction includes an H-beam, a first steel plate, a screw rod, a support platform, and a second steel plate. A clamping block is fixedly installed at the bottom of the H-beam, and the second steel plate is supported in the clamping block. The first steel plate is fixedly connected between two H-beams. The screw rod is installed in the middle of the first steel plate. Nuts are fixedly connected to the tops of both the second and first steel plates, and the screw rod is installed in the two nuts through matching internal and external threads. The support platform is rotatably connected to the top of the screw rod.

[0007] As a preferred embodiment of this utility model, two sliding members are fixedly connected to both sides of the top of the support platform, and matching cylinders are fixedly connected to both sides of one end of the first steel plate, with the two sliding members sliding in the matching cylinders respectively.

[0008] As a preferred embodiment of this utility model, the screw and the nut are on the same vertical line, and the screw is fitted into the nut.

[0009] As a preferred embodiment of this utility model, the support platform is fixedly connected to the top of the screw, and the length of the support platform is between 10-25cm.

[0010] As a preferred technical solution of this utility model, the end face of the second steel plate is provided with a plurality of slots.

[0011] As a preferred embodiment of this utility model, the second steel plate and the supporting block are embedded in the concrete.

[0012] As a preferred embodiment of this utility model, a rotating component is fixedly connected to the bottom of the screw.

[0013] Compared with the prior art, this utility model provides a bridge expansion joint for bridge construction, which has the following advantages:

[0014] 1. This bridge expansion joint, used in bridge construction, employs a precise fit between a screw and a nut to accurately adjust the expansion distance. This effectively adapts to the expansion and contraction deformation of the bridge caused by temperature changes and vehicle loads, ensuring the safety and stability of the bridge structure. Furthermore, the combination of the support platform and sliding component ensures smooth operation during expansion and contraction, reducing vibration and noise, and improving driving comfort and safety. Simultaneously, the rotating component at the bottom of the screw allows for easy inspection and replacement, reducing maintenance costs and cycle time.

[0015] 2. This bridge expansion joint for bridge construction employs a second steel plate and H-beam clamping blocks embedded in concrete, enhancing the overall structural stability and impact resistance, maintaining good performance even in harsh environments. This reduces bridge maintenance costs and traffic disruptions caused by frequent replacement of expansion joints. Attached Figure Description

[0016] Figure 1 This is the front view of the present utility model;

[0017] Figure 2 This is a top view of the present invention;

[0018] Figure 3 This utility model Figure 1 Enlarged view of point A in the middle.

[0019] In the diagram: 1. H-beam; 2. First steel plate; 3. Screw; 4. Nut; 5. Support platform; 6. Second steel plate; 7. Sliding component. Detailed Implementation

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Please see Figures 1-3 In this embodiment: a bridge expansion joint for bridge construction includes an H-beam 1, a first steel plate 2, a screw rod 3, a support platform 5, and a second steel plate 6. A clamping block is fixedly installed at the bottom of the H-beam 1, and the second steel plate 6 is supported in the clamping block. The first steel plate 2 is fixedly connected between the two H-beams 1. The screw rod 3 is installed in the middle of the first steel plate 2. Nuts 4 are fixedly connected to the top of both the second steel plate 6 and the first steel plate 2, and the screw rod 3 is installed in the two nuts 4 through matching internal and external threads. The support platform 5 is rotatably connected to the top of the screw rod 3.

[0022] It should be noted that the H-beam 1, as the main load-bearing component, has a clamping block fixed to its bottom for embedding in the concrete to ensure the stability of the entire device. The second steel plate 6 is placed in the clamping block to ensure close contact with the concrete. The first steel plate 2 is fixed between the two H-beams 1, serving as a connection and reinforcement. The screw 3 is installed in the middle of the first steel plate 2 and matches two nuts 4 via internal and external threads. These two nuts are located at the top of the first steel plate 2 and the second steel plate 6, respectively. The support platform 5 is rotatably connected to the top of the screw 3. Its design can accommodate the expansion and contraction of the bridge due to temperature changes or loads, while maintaining the stability of the device.

[0023] In some embodiments, two sliding members 7 are fixedly connected to both sides of the top of the support platform 5, and matching cylinders are fixedly connected to both sides of one end of the first steel plate 2, with the two sliding members 7 sliding in the matching cylinders respectively. To enhance the sliding performance of the support platform 5, two sliding members 7 are fixedly connected to both sides of its top. These sliding members can slide in the matching cylinders on both sides of one end of the first steel plate 2, thereby ensuring the smoothness and reliability of the support platform during movement.

[0024] In some embodiments, the screw 3 and the nut 4 are on the same vertical line, and the screw 3 is fitted into the nut 4. The screw 3 and the nut 4 being on the same vertical line ensures that the screw can rotate accurately within the nut, thereby achieving effective adjustment of the bridge expansion joint.

[0025] In some embodiments, the support platform 5 is fixedly connected to the top of the screw 3, and the length of the support platform 5 is between 10-25cm. The length of the support platform 5 is designed to be between 10-25cm, a size range intended to meet the needs of different bridge expansion joints while ensuring the structural strength and durability of the device.

[0026] In some embodiments, the end face of the second steel plate 6 is provided with a plurality of slots. The slots on the end face of the second steel plate 6 help to reduce weight and may also be used to install other auxiliary components, such as sealing strips, to improve waterproof performance.

[0027] In some embodiments, the second steel plate 6 and the clamping block are embedded in concrete. This embedded design not only increases overall stability but also allows the expansion joint to integrate better with the main bridge structure.

[0028] In some embodiments, a rotating component is fixedly connected to the bottom of the screw 3. This design allows the operator to adjust the position of the screw by rotating a tool, thereby controlling the overall operation of the telescopic device.

[0029] Working principle: When the bridge is displaced due to temperature changes or vehicle loads, the screw 3 is rotated via the rotating component, causing the connected support platform 5 to move up and down. Due to the sliding connection between the support platform and the sliding component 7, it can slide freely within the matching cylinder of the first steel plate 2 without affecting the normal expansion and contraction of the bridge. The threaded engagement between the screw and the nut provides stable adjustment capability, ensuring that the device remains balanced and stable throughout the expansion and contraction process.

[0030] When the bridge expands due to increased temperature, screw 3 rotates upward, and support platform 5 rises accordingly, and vice versa. This allows the bridge to expand and contract freely under different temperature conditions, avoiding structural damage caused by stress concentration. When vehicles pass over the bridge, the resulting dynamic loads cause minor deformations. The sliding design of support platform 5 can respond to these deformations instantly, ensuring the flatness of the bridge deck and driving safety.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bridge expansion joint for bridge construction, characterized in that: The assembly includes an H-beam (1), a first steel plate (2), a screw (3), a support platform (5), and a second steel plate (6). A clamping block is fixedly installed at the bottom of the H-beam (1), and the second steel plate (6) is supported in the clamping block. The first steel plate (2) is fixedly connected between the two H-beams (1). The screw (3) is installed in the middle of the first steel plate (2). Nuts (4) are fixedly connected to the top of both the second steel plate (6) and the first steel plate (2). The screw (3) is installed in the two nuts (4) through matching internal and external threads. The support platform (5) is rotatably connected to the top of the screw (3).

2. A bridge expansion joint for bridge construction according to claim 1, characterized in that: Two sliding members (7) are fixedly connected to the top two sides of the support platform (5), and matching cylinders are fixedly connected to one side of the first steel plate (2), and the two sliding members (7) slide in the matching cylinders respectively.

3. A bridge expansion joint for bridge construction according to claim 1, characterized in that: The screw (3) and the nut (4) are on the same vertical line, and the screw (3) is fitted into the nut (4).

4. A bridge expansion joint for bridge construction according to claim 1, characterized in that: The support platform (5) is fixedly connected to the top of the screw (3), and the length of the support platform (5) is between 10-25cm.

5. A bridge expansion joint for bridge construction according to claim 1, characterized in that: The end face of the second steel plate (6) has several slots.

6. A bridge expansion joint for bridge construction according to claim 1, characterized in that: The second steel plate (6) and the supporting block are used to be embedded in the concrete.

7. A bridge expansion joint for bridge construction according to claim 1, characterized in that: A rotating component is fixedly connected to the bottom of the screw (3).

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