A bridge expansion joint

Abstract

This utility model discloses a bridge expansion joint, including a road surface steel component. Several temporary connecting plates are arranged on the top of the road surface steel component. Several unequal angle steels are welded to one side of the road surface steel component. Several riveting connectors are welded in a straight line below the unequal angle steels. The temporary connecting plates and the unequal angle steels are connected by bolts and nuts. This utility model unitizes and modularizes the riveting structure, which accounts for 70% of the workload in the production process of the expansion joint, and implements standardized and mass production. This not only effectively reduces the complexity and labor costs in the production process, but also significantly improves production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of bridge expansion joints, specifically, it relates to a bridge expansion device. Background Technology

[0002] Bridge expansion joints are an important product in civil engineering construction projects. Relevant standards and specifications in the engineering field require that the road surface steel of the expansion joints be a single piece, and welding points are not allowed within the lane area. This presents challenges for mass production of expansion joints, as factors such as product length and preset joint width are uncertain. Therefore, expansion joint products are customized and specific, meaning they must be designed and manufactured according to the design and construction requirements of a specific project. The existing production process generally follows: ③ Review of order requirements → ① Procurement of raw materials → ⑤ Finished expansion joints → ⑥ Delivery.

[0003] In terms of production organization, the construction unit's management of project progress and order plans differs from the product manufacturing unit's management of production plans, leading to risks of coordination difficulties and communication delays. Product production plans may be early or late, and to avoid resource waste from premature production, manufacturing units often begin production only upon receiving order requirements. Regarding product structure, common bridge expansion joints include several road surface steel sections, several waterstops, several connecting plates, and several reinforcing bars. After welding the reinforcing bars to the connecting plates, they are evenly distributed on the bottom or sides of the road surface steel sections and welded in place. The waterstops are embedded between the steel sections.

[0004] In practice, the existing production organization processes and product structures have the following problems:

[0005] Production cannot be planned in advance, making mass production impossible.

[0006] Due to the limited process cycle, the production of finished telescopic devices accounts for 95% of the total workload of the process. The tight production schedule and heavy workload result in long-term continuous rush work, fatigue production, and difficulty in ensuring quality.

[0007] Producing the entire telescopic device is not conducive to transportation and operation between work areas, and is time-consuming and labor-intensive.

[0008] The number of connecting plates and reinforcing bars is large, and they need to be positioned and welded one by one. This process takes a long time and is inefficient.

[0009] The integrity and stability of the product depend on the reliability of the welding between the connecting plate and the road steel. The weld is segmented, short and scattered, resulting in low weld strength, poor impact resistance, and easy deformation and detachment.

[0010] In view of this, this utility model is proposed. Utility Model Content

[0011] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a bridge expansion joint that solves the problems mentioned in the background art.

[0012] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0013] A bridge expansion joint includes: a road surface steel component, a plurality of temporary connecting plates disposed above the road surface steel component, a plurality of unequal angle steels welded to one side of the road surface steel component, a plurality of riveted connectors welded in a straight line below the unequal angle steels, and the temporary connecting plates and the unequal angle steels being connected by bolts and nuts.

[0014] In this embodiment, there are two side beam steel sections, several middle beam steel sections, and several environmentally friendly polymer waterstops. Grooves are provided on one side of the two side beam steel sections and on both sides of the several middle beam steel sections. The several middle beam steel sections are evenly distributed between the two side beam steel sections. The several environmentally friendly polymer waterstops are arranged between every two adjacent steel sections and embedded in the grooves on the upper part of the steel sections.

[0015] In this embodiment, the temporary connecting plate includes a U-shaped frame, with plates fixedly connected to both ends of the U-shaped frame, and through slots for bolt insertion are provided on opposite sides of the plates.

[0016] In this embodiment, the temporary connecting plate passes through the long side of the unequal angle steel on the opposite side, and several through holes corresponding to the positions of the through slots are evenly distributed near the edge; the nut is positioned and welded to the through hole shaft, and the bolt passes through the through hole and is threadedly connected to the nut.

[0017] In this embodiment, the cross-section of the unequal-sided angle steel is an L-shaped structure.

[0018] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0019] This invention modularizes and standardizes the riveting structure, which accounts for 70% of the production process of telescopic devices, enabling standardized and mass production. This not only effectively reduces the complexity and labor costs in the production process but also significantly improves production efficiency. In this way, the entire process from demand to delivery is drastically shortened, reducing related workload by up to 70%. This optimization effectively controls the time cost at each stage while improving the continuity and stability of the production line. Furthermore, the modular design significantly reduces repetitive work in the manufacturing process, greatly shortening the production cycle. Ultimately, this improvement not only accelerates the speed of finished product delivery but also improves delivery efficiency, allowing customers to receive high-quality telescopic devices more quickly, meeting market demands for efficient delivery and high-quality products.

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0022] Figure 1 An isometric view of a bridge expansion joint provided in an embodiment of this technical solution.

[0023] Figure 2 This is a riveting assembly unit for a bridge expansion joint provided in this embodiment of the technical solution.

[0024] Figure 3 , 4 Figure 5 is a side view of a bridge expansion joint provided in an embodiment of this technical solution.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 11 Road surface steel components, 1-1 Side beam steel, 1-2 Middle beam steel, 1-3 Environmentally friendly polymer waterstop, 2-1 Unequal angle steel, 2-2 Riveting connectors, 2-3 Bolts, 2-4 Nuts, 3 Temporary connecting plates.

[0027] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings.

[0029] Please see Figure 1-5 As shown, this embodiment provides a bridge expansion joint, including bolts 2-3 and nuts 2-4, a road surface steel component 1, a plurality of temporary connecting plates 3 are provided above the road surface steel component 1, a plurality of unequal angle steels 2-1 are welded to one side of the road surface steel component 1, and a plurality of riveting connectors 2-2 are welded in a straight line below the unequal angle steels 2-1, and the temporary connecting plates 3 and the unequal angle steels 2-1 are connected by bolts 2-3 and nuts 2-4.

[0030] Optionally, the riveted connector 2-2 and the unequal angle steel 2-1 can be positioned at equal intervals and welded together.

[0031] Optionally, the riveting connector 2-2 can be a steel bar, steel plate, etc.

[0032] Optionally, the riveted connector 2-2 and the unequal angle steel 2-1 can be positioned at equal intervals and welded together.

[0033] Optionally, the riveting connector 2-2 can be a reinforcing bar, steel plate, etc.

[0034] In this embodiment, there are two side beam steel sections 1-1, several middle beam steel sections 1-2, and several environmentally friendly polymer waterstops 1-3. Grooves are provided on one side of the two side beam steel sections 1-1 and on both sides of the several middle beam steel sections 1-2. The several middle beam steel sections 1-2 are evenly distributed between the two side beam steel sections 1-1. The several environmentally friendly polymer waterstops 1-3 are arranged between every two adjacent steel sections and embedded in the grooves on the upper part of the steel sections.

[0035] In this embodiment, the temporary connecting plate 3 includes a U-shaped frame, with plates fixedly connected to both ends of the U-shaped frame, and through slots for bolts 2-3 to be inserted through the opposite sides of the plates.

[0036] In this embodiment, the temporary connecting plate 3 passes through the long side of the unequal angle steel 2-1 on the opposite side, and several through holes corresponding to the positions of the through slots are evenly distributed along the edge; the nut 2-4 is positioned and welded to the through hole shaft, and the bolt 2-3 passes through the through hole and is threadedly connected to the nut 2-4.

[0037] Preferably, each pair of 2-rivet assembly units has 4 pairs of through holes, and the 2 pairs of 2-3 bolts 2-3 at both ends are connected and locked to the 3 temporary connecting plates 3. During the installation of the telescopic device, the 2 pairs of 2-3 bolts 2-3 in the middle section are used for fine-tuning and precise positioning. After the telescopic device is positioned and fixed, the 3 temporary connecting plates 3 are removed, and all bolts 2-3 are retained as reinforcing ribs for the mounting groove.

[0038] In this embodiment, the cross-section of the unequal angle steel 2-1 is an L-shaped structure.

[0039] like Figure 3 , Figure 4, Figure 5 The diagram shows different configurations of a road surface steel component 1. The bottom or side surface of the road surface steel component 1 is positioned on the top or side surface of an unequal angle steel 2-1 and welded and fixed along the length of the road surface steel component 1. The two ends of the temporary connecting plate 3 are connected to the unequal angle steel 2-1 respectively and temporarily fixed to the road surface steel component 1. The unequal angle steel 2-1 is arranged at a spacing of JX along the length of the road surface steel component 1.

[0040] A production organization process for a bridge expansion joint includes the following steps:

[0041] ① Procurement of raw materials → ② Mass production and assembly of components → ③ Review of demand requirements → ④ Assembly and welding of road surface steel → ⑤ Finished expansion joints → ⑥ Delivery.

[0042] In this technical solution, step ②, the mass production of the riveting assembly, is a multi-unit process and is not constrained by steps ③, ④, ⑤, and ⑥. It can be pre-produced in batches for future use. The workload of step ②, the mass production of the riveting assembly, accounts for 70% to 80% of the total workload of this process.

[0043] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A bridge expansion joint, characterized in that, include: The road surface steel component (1) has several temporary connecting plates (3) on its upper part. Several unequal angle steels (2-1) are welded to one side of the road surface steel component (1). Several riveted connectors (2-2) are welded in a straight line below the unequal angle steels (2-1). The temporary connecting plates (3) and the unequal angle steels (2-1) are connected by bolts (2-3) and nuts (2-4).

2. A bridge expansion joint according to claim 1, characterized in that, Two side beam steel sections (1-1), several middle beam steel sections (1-2), and several environmentally friendly polymer waterstops (1-3). Grooves are provided on one side of the two side beam steel sections (1-1) and on both sides of the several middle beam steel sections (1-2). The several middle beam steel sections (1-2) are evenly distributed between the two side beam steel sections (1-1). The several environmentally friendly polymer waterstops (1-3) are arranged between every two adjacent steel sections and embedded in the grooves on the upper part of the steel sections.

3. A bridge expansion joint according to claim 1, characterized in that, The temporary connecting plate (3) includes a U-shaped frame, with plates fixedly connected to both ends of the U-shaped frame. Through slots for bolts (2-3) to be inserted are provided on opposite sides of the plates.

4. A bridge expansion joint according to claim 1, characterized in that, The temporary connecting plate (3) passes through one side of the long side of the unequal angle steel (2-1) on the opposite side, and several through holes corresponding to the positions of the through slots are evenly distributed near the edge; the nut (2-4) is positioned and welded to the through hole shaft, and the bolt (2-3) passes through the through hole and is threadedly connected to the nut (2-4).

5. A bridge expansion joint according to claim 1, characterized in that, The cross-section of the unequal angle steel (2-1) is L-shaped.

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