Bridge expansion joint device displacement adjusting limiting structure

Abstract

The utility model relates to bridge expansion joint technical field discloses a bridge expansion joint device displacement adjustment limiting structure, including two symmetrical bridge steel plate roadbed, the top of two bridge steel plate roadbed all equal distance fixed with installation adjustment pedestal, the utility model discloses, through being equipped with installation adjustment pedestal, the threaded adjustment limiting threaded column of being convenient for screwing, and the elastic protection effect of elastic expansion buffer piece to adjustment limiting threaded column, not easy due to pressure deformation, and rotation adjustment limiting threaded column can push two load bearing support steel pipes away from each other, and close, and the size of joint is adjusted, and two gap dust covers can play dustproof and foreign matter prevention effect to the gap, and the auxiliary pre -buried fixed effect of anti -drift pre -buried frame plays, and pre -buried fixed strength is high, makes the device for movable installation mode, and the displacement and adjustment of expansion joint are convenient, and the adjustment stability is not easy to tilt deformation, and the butt joint can dustproof and foreign matter prevent shielding, and pre -buried fixed strength is high.

Description

Technical Field

[0001] This utility model relates to the field of bridge expansion joint technology, and in particular to a displacement adjustment and limiting structure for a bridge expansion joint device. Background Technology

[0002] In bridge engineering, bridge expansion joints are crucial components ensuring the safety and stability of bridge structures. Their primary function is to allow the bridge to freely expand and contract under varying climatic conditions, vehicle loads, and temperature changes, thus guaranteeing the overall structural stability of the bridge. The displacement adjustment and limiting structure is a key part of the bridge expansion joint system. Through specific construction and principles, it achieves precise control and effective limitation of the bridge's expansion and contraction displacement to meet the operational needs of bridges under various working conditions. However, in existing bridge expansion joint devices, many are typically fixedly installed on both sides of the bridge joint, serving a load-bearing and protective function. The ease of adjusting the gap between adjacent expansion joints during installation is insufficient. When facing different bridge deformation requirements or changes in actual working conditions, fixed expansion joints are difficult to adjust the gap flexibly and conveniently. Workers often need to spend a lot of time and effort, using complex operating procedures and specialized tools to make limited adjustments. This not only increases maintenance costs and difficulty but may also affect the normal performance and safety of the bridge due to untimely or inaccurate adjustments. Furthermore, the pre-embedded fastness of the expansion joint device within the wall is insufficient, and the dust and soil protection within the expansion joint is inadequate, easily accumulating dust and dirt, affecting the convenience of gap adjustment. Therefore, we propose a displacement adjustment and limiting structure for bridge expansion joint devices to solve the above problems. Utility Model Content

[0003] In response to the problems raised, this utility model provides a displacement adjustment and limiting structure for a bridge expansion joint device to solve the aforementioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A displacement adjustment and limiting structure for a bridge expansion joint device includes two symmetrical bridge steel plate roadbeds, with an installation adjustment base fixed at an equal distance from the top of each of the two bridge steel plate roadbeds. Each of the two adjacent mounting and adjusting bases is bolted to an adjusting telescopic rod on the opposite side. Each of the two adjacent adjusting telescopic rods is provided with a bearing support steel pipe on the opposite side. An adjusting limit threaded post is threaded between the two adjacent bearing support steel pipes. An elastic telescopic buffer is provided in the middle of each of the multiple adjusting limit threaded posts. Among them, the two bridge steel plate roadbeds are provided with staggered gap dust covers on opposite sides, and the two bridge steel plate roadbeds are provided with anti-deviation embedded frames on opposite sides.

[0005] Preferably, the bottom of the bridge steel plate roadbed is provided with an auxiliary embedded plate, and the adjacent installation adjustment bases are correspondingly welded to the opposite sides of the top of the two bridge steel plate roadbeds. Vertical embedded rods are fixedly installed at equal intervals at the bottom of the bridge steel plate roadbed, and the bridge steel plate roadbed and the auxiliary embedded plate are an integral whole.

[0006] Preferably, the top end of the vertical embedded rod passes through the auxiliary embedded plate and is threaded with a fixing bolt, and the vertical embedded rod is bolted and fixed to the auxiliary embedded plate by the fixing bolt.

[0007] Preferably, a bolted reinforcing sleeve is fixedly installed on the top of the mounting and adjusting base, and the adjusting telescopic rod is bolted and fixed inside the bolted reinforcing sleeve. The adjusting telescopic rod is bolted and fixed to the top of the mounting and adjusting base by the bolted reinforcing sleeve, and the adjusting telescopic rod and the load-bearing support steel pipe are fixedly connected as a whole.

[0008] Preferably, the elastic telescopic buffer includes mounting rings, shock-absorbing protective springs, and supporting rubber columns. The adjusting and limiting threaded column is composed of two threaded support columns. The two mounting rings are fixedly installed on opposite sides of the two threaded support columns. The two ends of the shock-absorbing protective spring are sleeved and fixed to the outside of the two mounting rings. The plurality of supporting rubber columns are evenly installed in a ring between two adjacent mounting rings.

[0009] Preferably, each of the two bridge steel plate roadbeds has an installation slot on its opposite side, and the bottom of the two gap dust covers is correspondingly installed and engaged with the inner side of the two installation slots. Both gap dust covers are rubber dustproof sheets.

[0010] Preferably, the anti-deviation embedded frame is welded and installed on the opposite side of the two bridge steel plate roadbeds. The anti-deviation embedded frame is welded and fixed in an L-shape. The bridge steel plate roadbed, the installation and adjustment base, the load-bearing support steel pipe, the elastic telescopic buffer, and the outer side of the anti-deviation embedded frame are all sprayed with anti-rust paint.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. The displacement adjustment and limiting structure of this bridge expansion joint device has corresponding installation adjustment bases welded and fixed on the two bridge steel plate subgrades. The installation adjustment bases support the bolted adjustment telescopic rods and load-bearing support steel pipes, which facilitates the threaded installation of the adjustment limiting threaded columns onto the two adjacent load-bearing support steel pipes. This achieves the function of movable installation and connection of the two bridge steel plate subgrades. Moreover, multiple adjustment limiting threaded columns are elastically protected by elastic telescopic buffers. When the bridge joint shifts vertically or horizontally, the elastic telescopic buffers provide elastic movement protection. Rotating the adjustment limiting threaded columns can push the two load-bearing support steel pipes away from or towards each other, which facilitates the adjustment of the joint size between the two bridge steel plate subgrades. The adjustment is stable and not prone to tilting or deformation. This makes the device a movable installation method, which facilitates the displacement and adjustment of the expansion joint and ensures stable adjustment without tilting or deformation.

[0012] 2. The displacement adjustment and limiting structure of this bridge expansion joint device has staggered gap dust covers on both sides of the two bridge steel plate roadbeds. The two gap dust covers can prevent dust and foreign objects from entering the gap between the two bridge steel plate roadbeds. They can be adjusted according to the size of the gap, with good adaptability. Furthermore, anti-displacement embedded frames are provided on the opposite sides of the two bridge steel plate roadbeds to assist in the pre-embedded fixing. The pre-embedded fixing strength is high and it is not easy to tilt or shift. This allows the device to be dustproof and protected from foreign objects at the joint, and the pre-embedded fixing strength is high. Attached Figure Description

[0013] Figure 1 This utility model provides a frontal perspective three-dimensional schematic diagram of a displacement adjustment and limiting structure for a bridge expansion joint device; Figure 2 This utility model provides a top-view three-dimensional schematic diagram of a displacement adjustment and limiting structure for a bridge expansion joint device; Figure 3 This utility model provides a front view sectional three-dimensional schematic diagram of the displacement adjustment and limiting structure of a bridge expansion joint device; Figure 4 This utility model Figure 3 Enlarged view of structure A; Figure 5 This is a frontal perspective three-dimensional schematic diagram of the connection structure between the installation and adjustment base and the adjustment telescopic rod of this utility model.

[0014] In the diagram: 1. Bridge steel plate subgrade; 101. Auxiliary embedded plate; 102. Vertical embedded rod; 103. Fixing bolt; 2. Installation and adjustment base; 201. Bolted reinforcing sleeve; 3. Adjustment telescopic rod; 4. Bearing support steel pipe; 5. Adjustment limit threaded column; 6. Elastic telescopic buffer; 601. Installation ring; 602. Shock-absorbing protection spring; 603. Supporting rubber column; 7. Gap dust cover; 701. Installation slot; 8. Anti-deviation embedded frame. Detailed Implementation

[0015] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0017] Please see Figures 1-5 A displacement adjustment and limiting structure for a bridge expansion joint device includes two symmetrical bridge steel plate roadbeds 1, with an installation adjustment base 2 fixed at equal distances on the top of the two bridge steel plate roadbeds 1. Each of the two adjacent mounting bases 2 has an adjustable telescopic rod 3 bolted to one side of its opposite side. Each of the two adjacent adjustable telescopic rods 3 has a load-bearing support steel pipe 4 on one side of its opposite side. Each of the two adjacent load-bearing support steel pipes 4 is connected by an adjustable limit threaded post 5. Each of the multiple adjustable limit threaded posts 5 has an elastic telescopic buffer 6 in the middle. Among them, the two bridge steel plate roadbeds 1 are provided with intersecting gap dust covers 7 on the opposite side, and the two bridge steel plate roadbeds 1 are provided with anti-deviation embedded frames 8 on the opposite side. The beneficial effects that this plan aims to achieve are: By welding and fixing installation adjustment bases 2 to the two bridge steel plate roadbeds 1 respectively, the installation adjustment bases 2 can support the bolted adjustment telescopic rods 3 and the load-bearing support steel pipes 4, which makes it easy to thread the adjustment limit threaded column 5 onto the two adjacent load-bearing support steel pipes 4, thus achieving the function of movable installation connection of the two bridge steel plate roadbeds 1. The adjustment limit threaded column 5 is elastically supported by the elastic telescopic buffer 6. The bridge gap will usually be misaligned vertically or horizontally, which can be protected by the elastic deformation of the elastic telescopic buffer 6, which is not easy to damage the overall structure and plays an elastic protection role. Rotating the adjustment limit threaded column 5 can push the two load-bearing support steel pipes 4 to move away from each other and move closer to each other, which makes it easy to adjust the size of the joint between the two bridge steel plate roadbeds 1, and the adjustment is stable and not easy to tilt or deform. The two gap dust covers 7 can prevent dust and foreign objects from entering the gaps between the two bridge steel plate roadbeds 1. They can be adjusted according to the size of the gaps, making them highly adaptable. Furthermore, each of the two bridge steel plate roadbeds 1 has an anti-displacement embedded frame 8 on its opposite side, which plays an auxiliary role in pre-embedding and fixing. The pre-embedding and fixing strength is high, and it is not easy to tilt or shift. The device is a movable installation method, which facilitates the displacement and adjustment of the expansion joint. The adjustment is stable and not easy to tilt or deform. The butt joint can be protected from dust and foreign objects, and the pre-embedding and fixing strength is high.

[0018] Furthermore, an auxiliary embedded plate 101 is provided at the bottom of the bridge steel plate roadbed 1, and adjacent installation adjustment bases 2 are correspondingly welded to the opposite sides of the top of the two bridge steel plate roadbeds 1. Vertical embedded rods 102 are fixedly installed at equal intervals at the bottom of the bridge steel plate roadbed 1. The bridge steel plate roadbed 1 and the auxiliary embedded plate 101 are an integral whole. Specifically, the bottom of the bridge steel plate roadbed 1 is provided with an auxiliary embedded plate 101, which plays a role in horizontal pre-embedding installation. Vertical pre-embedding rods 102 are fixedly installed at equal intervals at the bottom of the bridge steel plate roadbed 1, which improves the vertical pre-embedding fixing strength and has excellent pre-embedding strength and adaptability.

[0019] Furthermore, the top end of the vertical embedded rod 102 passes through the auxiliary embedded plate 101 and is threadedly connected with a fixing bolt 103. The vertical embedded rod 102 is bolted and fixed to the auxiliary embedded plate 101 by the fixing bolt 103. Specifically, the top of the vertical embedded rod 102 passes through the auxiliary embedded plate 101 and is threaded with a fixing bolt 103, which serves as a bolt for fixing. It is convenient for disassembly and assembly in the early stage and for fixing in the later stage, making it easy to fix and use.

[0020] Furthermore, a bolted reinforcing sleeve 201 is fixedly installed on the top of the installation adjustment base 2, and the adjustment telescopic rod 3 is bolted and fixed inside the bolted reinforcing sleeve 201. The adjustment telescopic rod 3 is bolted and fixed to the top of the installation adjustment base 2 by the bolted reinforcing sleeve 201, and the adjustment telescopic rod 3 and the bearing support steel pipe 4 are fixedly connected as a whole. Specifically, a bolted reinforcing sleeve 201 is fixedly installed on the top of the installation adjustment base 2. The bolted reinforcing sleeve 201 plays a connecting and reinforcing role. When the adjustment telescopic rod 3 is bolted to the bolted reinforcing sleeve 201, it is not easy to be deformed and damaged due to external pulling and vibration intensity. It has high tensile and stress resistance and is convenient to use. The adjustment telescopic rod 3 and the bearing support steel pipe 4 are fixedly connected as a whole, with high overall installation strength, excellent tensile and damage resistance, and improved connection strength.

[0021] Furthermore, the elastic telescopic buffer 6 includes a mounting ring 601, a shock-absorbing protection spring 602, and a supporting rubber column 603. The adjusting limit threaded column 5 is composed of two threaded support columns. The two mounting rings 601 are fixedly installed on the opposite side of the two threaded support columns. The two ends of the shock-absorbing protection spring 602 are sleeved and fixed to the outside of the two mounting rings 601. Multiple supporting rubber columns 603 are evenly installed in a ring between two adjacent mounting rings 601. Specifically, the elastic telescopic buffer 6 includes a mounting ring 601, a shock-absorbing protective spring 602, and supporting rubber columns 603. The mounting ring 601, together with multiple supporting rubber columns 603, can support the middle part of the adjusting limit threaded column 5. The multiple supporting rubber columns 603 are evenly installed in a ring shape, providing elastic positioning support. When the pressure is large, the supporting rubber columns 603 can elastically deform and adjust, making it easy to interact with the bridge gap. The shock-absorbing protective spring 602 provides auxiliary elasticity and elastic reset, facilitating the dynamic load-bearing of the bridge gap. It combines rigid support and elastic protection, making it convenient to use.

[0022] Furthermore, each of the two bridge steel plate roadbeds 1 has an installation slot 701 on one side opposite to the other. The bottom of the two gap dust covers 7 are installed and engaged with the inner side of the two installation slots 701. Both gap dust covers 7 are rubber dust covers. Specifically, each side of the bridge steel plate roadbed 1 is provided with an installation slot 701, which facilitates the installation of the gap dust cover 7 into the installation slot 701. The installation and disassembly are convenient and suitable for operation. Moreover, the gap dust cover 7 is a rubber dust cover, which has excellent corrosion resistance, durability and long service life.

[0023] Furthermore, the anti-deviation embedded frame 8 is welded and installed on the opposite side of the two bridge steel plate roadbeds 1. The anti-deviation embedded frame 8 is welded and fixed in an L shape. The bridge steel plate roadbed 1, the installation and adjustment base 2, the bearing support steel pipe 4, the adjustment limit threaded column 5, the elastic telescopic buffer 6 and the outer side of the anti-deviation embedded frame 8 are all sprayed with anti-rust paint. Specifically, the anti-deviation embedded frame 8 is welded and installed on the opposite side of the two bridge steel plate roadbeds 1. The installation is highly secure and easy to fix and bolt. The anti-deviation embedded frame 8 is welded and fixed in an L-shape, which makes the connection area between the anti-deviation embedded frame 8 and the bridge steel plate roadbed 1 large and the connection tight. It is suitable for use and not easy to deform or be damaged. The bridge steel plate roadbed 1, the installation and adjustment base 2, the load-bearing support steel pipe 4, the adjustment limit threaded column 5, the elastic telescopic buffer 6 and the outer side of the anti-deviation embedded frame 8 are all sprayed with anti-rust paint, which has excellent corrosion resistance and durability and is convenient to use.

[0024] How to use and how to work this device: By welding and fixing installation adjustment bases 2 to the two bridge steel plate roadbeds 1 respectively, adjustment telescopic rods 3 are bolted to the installation adjustment bases 2, which serve as fixing and support functions. The two adjustment telescopic rods 3 are provided with load-bearing support steel pipes 4 on opposite sides, which can be threaded to install adjustment limit threaded columns 5. The two ends of the adjustment limit threaded columns 5 are respectively threaded to the two connected load-bearing support steel pipes 4, which serve to connect and fix the two bridge steel plate roadbeds 1. Moreover, the multiple adjustment limit threaded columns 5 are all elastically protected by elastic telescopic buffers 6, which can be elastically adjusted. Since the bridge gaps usually shift vertically or horizontally, the elastic telescopic buffers 6 provide elastic protection, giving the bridge gaps room to move. The gaps have good adaptability to floating adjustment. At the same time, the elastic telescopic buffers 6 can support the adjustment limit threaded columns 5, which can remain stable when the adjustment limit threaded columns 5 rotate. When joint displacement adjustment is required, the adjustable limit threaded column 5 can be rotated to push the bearing support steel pipe 4. The installation adjustment base 2 drives the two bridge steel plate roadbeds 1 to move, so that the size of the joint between the two bridge steel plate roadbeds 1 can be adjusted by rotating the adjustable limit threaded column 5. The elastic telescopic buffer 6 plays a limiting role to prevent the bridge steel plate roadbed 1 from shifting due to large-scale adjustment. The adjustment is stable and not easy to tilt or deform. On the opposite sides of the two bridge steel plate roadbeds 1, there are intersecting gap dust covers 7. The two gap dust covers 7 can prevent dust and foreign objects from entering the gaps of the two bridge steel plate roadbeds 1. They can be adjusted according to the size of the gaps, and have good adaptability. On the opposite sides of the two bridge steel plate roadbeds 1, there are anti-deviation embedded frames 8, which play an auxiliary role in pre-embedded fixation. The pre-embedded fixation strength is high and it is not easy to tilt or deviate. The bottom of the bridge steel plate roadbed 1 is provided with an auxiliary embedded plate 101, which plays a role in horizontal pre-embedding installation. Vertical embedded rods 102 are fixedly installed at equal intervals at the bottom of the bridge steel plate roadbed 1, which improves the vertical pre-embedding fixing strength. The pre-embedding strength and adaptability are excellent. The top of the vertical embedded rod 102 passes through the auxiliary embedded plate 101 and is threadedly connected with a fixing bolt 103, which plays a role in bolting and fixing. It is convenient for disassembly and assembly in the early stage and for fixing in the later stage, making it easy to fix and use. A bolted reinforcing sleeve 201 is fixedly installed on the top of the installation adjustment base 2. The bolted reinforcing sleeve 201 plays a connecting and reinforcing role. When the adjustment telescopic rod 3 is bolted to the bolted reinforcing sleeve 201, it is not easy to be deformed and damaged due to external pulling and vibration intensity. It has high tensile and stress resistance and is convenient to use. The adjustment telescopic rod 3 and the bearing support steel pipe 4 are fixedly connected as a whole, with high overall installation strength, excellent tensile and damage resistance, and improved connection strength. The elastic telescopic buffer 6 includes a mounting ring 601, a shock-absorbing and protective spring 602, and supporting rubber columns 603. The mounting ring 601, together with multiple supporting rubber columns 603, can support the middle part of the adjusting limit threaded column 5. The multiple supporting rubber columns 603 are evenly installed in a ring shape, which can play an elastic positioning and support role. When the pressure is large, the supporting rubber columns 603 can elastically deform and adjust, which can easily follow the bridge gap. The shock-absorbing and protective spring 602 plays an auxiliary elastic role and can play an elastic reset role, which can facilitate the dynamic load of the bridge gap. It takes into account both rigid support and elastic protection, and is convenient to use. The bridge steel plate roadbed 1 is provided with mounting slots 701 on both sides, which facilitates the installation of the gap dust cover 7 into the mounting slots 701. The installation and disassembly are convenient and suitable for operation. Moreover, the gap dust cover 7 is a rubber dust cover, which has excellent corrosion resistance, durability and long service life. The anti-deviation embedded frame 8 is welded and installed on the opposite side of the two bridge steel plate roadbeds 1. The installation is highly secure and easy to fix and bolt. The anti-deviation embedded frame 8 is welded and fixed in an L-shape, which makes the connection area between the anti-deviation embedded frame 8 and the bridge steel plate roadbed 1 large and the connection tight. It is suitable for use and not easy to deform or be damaged. The bridge steel plate roadbed 1, the installation and adjustment base 2, the load-bearing support steel pipe 4, the adjustment limit threaded column 5, the elastic telescopic buffer 6 and the anti-deviation embedded frame 8 are all sprayed with anti-rust paint, which has excellent corrosion resistance and durability and is convenient to use. The device is designed for easy installation, facilitating the displacement and adjustment of expansion joints. It is stable and not prone to tilting or deformation. Furthermore, the joints are dustproof and protected from foreign objects, and the pre-embedded fixing strength is high.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A displacement adjustment and limiting structure for a bridge expansion joint device, comprising two symmetrical bridge steel plate subgrades (1), characterized in that: The tops of the two bridge steel plate roadbeds (1) are fixed with equal distances for installation and adjustment bases (2); Each of the two adjacent mounting adjustment bases (2) is bolted to an adjustment telescopic rod (3) on one side opposite to the other. Each of the two adjacent adjustment telescopic rods (3) is provided with a bearing support steel pipe (4) on one side opposite to the other. An adjustment limit threaded column (5) is threaded between the two adjacent bearing support steel pipes (4). An elastic telescopic buffer (6) is provided in the middle of each of the multiple adjustment limit threaded columns (5). Among them, the two bridge steel plate roadbeds (1) are provided with intersecting gap dust covers (7) on opposite sides, and the two bridge steel plate roadbeds (1) are provided with anti-deviation embedded frames (8) on opposite sides.

2. The displacement adjustment and limiting structure for a bridge expansion joint device according to claim 1, characterized in that: The bottom of the bridge steel plate roadbed (1) is provided with an auxiliary pre-embedded plate (101). The adjacent installation adjustment base (2) is welded to the opposite side of the top of the two bridge steel plate roadbeds (1). Vertical pre-embedded rods (102) are fixedly installed at equal intervals at the bottom of the bridge steel plate roadbed (1). The bridge steel plate roadbed (1) and the auxiliary pre-embedded plate (101) are an integral whole.

3. The displacement adjustment and limiting structure for a bridge expansion joint device according to claim 2, characterized in that: The top end of the vertical embedded rod (102) passes through the auxiliary embedded plate (101) and is threaded with a fixing bolt (103). The vertical embedded rod (102) is bolted and fixed to the auxiliary embedded plate (101) by the fixing bolt (103).

4. The displacement adjustment and limiting structure of a bridge expansion joint device according to claim 1, characterized in that: A bolted reinforcing sleeve (201) is fixedly installed on the top of the installation adjustment base (2). The adjustment telescopic rod (3) is bolted and fixed inside the bolted reinforcing sleeve (201). The adjustment telescopic rod (3) is bolted and fixed to the top of the installation adjustment base (2) by the bolted reinforcing sleeve (201). The adjustment telescopic rod (3) and the bearing support steel pipe (4) are fixedly connected as a whole.

5. The displacement adjustment and limiting structure for a bridge expansion joint device according to claim 1, characterized in that: The elastic telescopic buffer (6) includes a mounting ring (601), a shock-absorbing protective spring (602), and a supporting rubber column (603). The adjusting limit threaded column (5) is composed of two threaded support columns. The two mounting rings (601) are fixedly installed on the opposite side of the two threaded support columns. The two ends of the shock-absorbing protective spring (602) are sleeved and fixed to the outside of the two mounting rings (601). A plurality of supporting rubber columns (603) are evenly installed in a ring between two adjacent mounting rings (601).

6. The displacement adjustment and limiting structure for a bridge expansion joint device according to claim 1, characterized in that: The two bridge steel plate roadbeds (1) are provided with mounting slots (701) on opposite sides. The bottoms of the two gap dust covers (7) are fitted into the inner sides of the two mounting slots (701). Both gap dust covers (7) are rubber dust covers.

7. The displacement adjustment and limiting structure of a bridge expansion joint device according to claim 1, characterized in that: The anti-deviation embedded frame (8) is welded and installed on the opposite side of the two bridge steel plate roadbeds (1). The anti-deviation embedded frame (8) is welded and fixed in an L shape. The bridge steel plate roadbed (1), the installation adjustment base (2), the bearing support steel pipe (4), the adjustment limit threaded column (5), the elastic telescopic buffer (6) and the outer side of the anti-deviation embedded frame (8) are all sprayed with anti-rust paint.

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