Expansion joint sealing rubber strip

Abstract

The utility model discloses an expansion joint sealing rubber strip, which relates to the technical field of bridge expansion joints and comprises a main body, two sides of the main body are respectively provided with a hanging lug, the lower ends of the hanging lugs are connected with the bottoms of the two sides of the main body, the bottom surfaces of the upper ends of the hanging lugs are flush with the top surface of the main body, and the top surfaces of the upper ends of the hanging lugs are higher than the top surface of the main body. According to the expansion joint sealing rubber strip, the flow guide groove is formed in the top of the expansion joint sealing rubber strip, the ejection strip can prevent overlarge sand and sundries from entering the flow guide groove, the surface of the installed expansion joint sealing rubber strip is concave, sundries on the surface can be washed away by rainwater in the rainy season, and the material of the expansion joint sealing rubber strip has the high-elasticity characteristic; therefore, large-particle sundries are taken away by tires in the running process of a vehicle, and the situation that the rubber strip is damaged and falls off due to deposition of more sundries is avoided. In later maintenance, the number of construction workers is reduced, the number of maintenance replacement times is reduced, the secondary sealing cost is reduced, the construction safety maintenance time is shortened, and traffic accidents caused by vehicle blockage are relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge expansion joints, in particular to an expansion joint sealing rubber strip. Background Art

[0002] The expansion joint of a highway bridge is a structure that is intentionally retained when building a highway bridge. It is mainly used to prevent factors such as temperature changes from affecting the safety of the highway bridge.

[0003] Sealing strips are generally provided in the expansion joint for filling. For example, the patent with publication number CN215714593U discloses an expansion joint device suitable for bridges, which can meet the requirements of larger displacement on the basis of limited cost and has stronger impact resistance. The device comprises: a first CD steel, a second CD steel, a sealing strip, a first bridge-type connecting steel, a second bridge-type connecting steel, an auxiliary connecting steel and a connecting tube; the second CD steel is symmetrically arranged with the first CD steel; the sealing strip connects the first CD steel and the second CD steel; the first bridge-type connecting steel runs through the first CD steel and the second CD steel; a first branch is provided at the end of the first bridge-type connecting steel; the second bridge-type connecting steel is arranged in parallel below the first bridge-type connecting steel, and a second branch is provided at the end of the second bridge-type connecting steel, and the first branch and the second branch are forked; the auxiliary connecting steel is at an angle of 60° with the horizontal sections of the first bridge-type connecting steel and the second bridge-type connecting steel respectively; the connecting tube is provided at the horizontal sections of the first bridge-type connecting steel and the second bridge-type connecting steel.

[0004] The existing V-shaped expansion joint sealing device is prone to the accumulation of rainwater and debris, causing the rubber strip to break and fall off, increasing maintenance costs. During the maintenance process, the road needs to be closed, seriously affecting the traffic on the road and bridge. Therefore, there is an urgent need for an expansion joint sealing rubber strip that can easily drain rainwater and debris. Summary of the invention

[0005] The purpose of the present invention is to provide a sealing rubber strip for an expansion joint so as to solve the problems existing in the above-mentioned prior art and reduce the maintenance frequency of the expansion joint.

[0006] To achieve the above purpose, the utility model provides the following solutions:

[0007] The utility model provides an expansion joint sealing rubber strip, comprising a main body, wherein a hanging ear is respectively arranged on both sides of the main body, the lower end of the hanging ear is connected to the bottom of both sides of the main body, the bottom surface of the upper end of the hanging ear is flush with the top surface of the main body, and the top surface of the upper end of the hanging ear is higher than the top surface of the main body.

[0008] Optionally, in a natural state, the axis of the hanging ear is set at a certain angle to the central axis of the main body; the hanging ear is squeezed by the extrusion pressure on both sides and moves closer to the main body. At this time, the bottom surface of the upper end of the hanging ear is flush with the top surface of the main body, and a guide groove for drainage is formed between the hanging ears on both sides and the top surface of the main body.

[0009] Optionally, in a natural state, the axis of the ear is arranged at an angle of 20-60° to the central axis of the main body.

[0010] Optionally, in a natural state, the axis of the ear is arranged at an angle of 30° with the central axis of the main body.

[0011] Optionally, the main body and the hanging ear are integrally arranged.

[0012] Optionally, a ejector bar is provided in the middle of the top surface of the main body, and the ejector bar is used to prevent oversized sand and gravel debris from staying above the main body.

[0013] Optionally, the main body, the hanging ear and the ejection strip are integrally arranged.

[0014] Compared with the prior art, the utility model has achieved the following technical effects:

[0015] The utility model expansion joint sealing rubber strip has a drainage groove on the top for drainage. The protruding ejection strip in the middle of the hanging ear can prevent oversized sand and gravel debris from entering the drainage groove. The surface of the installed expansion joint sealing rubber strip forms a concave shape, and the debris on the surface can be washed away by rainwater in the rainy season. The material has high elasticity, so that larger particles of debris are taken away by the tires during the driving process of the vehicle, and the rubber strip will not be damaged and fall off due to the deposition of more debris. In the later maintenance, the number of construction workers is reduced, and the number of maintenance and replacement times is reduced to 1:3 or 4 times. The cost of secondary sealing of the surface of traditional rubber strips and the time for construction safety maintenance are also reduced, which reduces safety risks and ends the traffic time of the closed section of the road ahead of time, alleviating unnecessary traffic accidents caused by vehicle congestion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of the expansion joint sealing rubber strip in the utility model;

[0018] Figure 2 It is a structural schematic diagram of the expansion joint sealing rubber strip in the utility model installed in the expansion joint.

[0019] Description of reference numerals:

[0020] 1. Ear; 2. Main body; 3. Ejector strip. DETAILED DESCRIPTION

[0021] 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.

[0022] The purpose of the present invention is to provide a rubber strip for expansion joint sealing to solve the problems existing in the prior art. A drainage groove is set on the top, and the protruding strip in the middle of the hanging ear can prevent oversized sand and gravel from entering the drainage groove. In rainy seasons, the surface debris can also be washed away by rainwater. The material has high elasticity, so that larger particles of debris are taken away by the tires during vehicle driving, and the rubber strip will not be damaged and fall off due to the deposition of more debris. It can reduce the cost of secondary sealing and the time of construction safety maintenance, reduce safety risks, and end the traffic time of the closed section of the road in advance, and alleviate unnecessary traffic accidents caused by vehicle congestion.

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1 and 2 As shown, this embodiment provides an expansion joint sealing rubber strip, including a main body 2, with a hanging ear 1 provided on both sides of the main body 2, the lower end of the hanging ear 1 is connected to the bottom of both sides of the main body 2, the bottom surface of the upper end of the hanging ear 1 is flush with the top surface of the main body 2, and the top surface of the upper end of the hanging ear 1 is higher than the top surface of the main body 2.

[0025] In this specific embodiment, in a natural state, the axis of the hanging ear 1 is set at a certain angle to the central axis of the main body 2; the hanging ear 1 is squeezed by the pressure on both sides and moves closer to the main body 2. At this time, the bottom surface of the upper end of the hanging ear 1 is flush with the top surface of the main body 2, and a guide groove for drainage is formed between the hanging ears 1 on both sides and the top surface of the main body 2.

[0026] In the natural state, the axis of the lug 1 is set at an angle of 20-60° to the central axis of the main body 2. In this specific embodiment, in the natural state, the axis of the lug 1 is set at an angle of 30° to the central axis of the main body 2. In other specific embodiments, in the natural state, the axis of the lug 1 can be set at an angle of 45 degrees to the central axis of the main body 2. A ejector bar 3 is provided in the middle of the top surface of the main body 2, and the ejector bar 3 is used to prevent excessive sand and gravel debris from staying above the main body 2. The main body 2, the lug 1 and the ejector bar 3 are set as an integrated structure.

[0027] During the construction and installation process, first clean the expansion joint slot and determine the size of the expansion joint, cut the sealing rubber strip of corresponding length, and prepare special installation tools; secondly, apply lubricating grease to the expansion joint slot or use soapy water to wipe the ears 1 on both sides of the sealing rubber strip for easy installation; then place the ear 1 on one side of the sealing rubber strip in the expansion device, align the ear 1 with the slot and use a tool to push the ear 1 into the expansion joint device slot, finally turn the strip sideways so that the ear 1 on the other side is aligned with the slot on the other side and push it in with a tool. After the ears 1 on both sides are installed in place, use tools to adjust the straightness and sealing of the sealing rubber strip, clean up the debris around and on the surface of the expansion joint, and complete the construction and installation.

[0028] The expansion joint sealing rubber strip of the utility model has guide grooves for sufficient drainage on both sides of the hanging ear, and the raised part in the middle of the hanging ear can prevent excessive sand and gravel debris from entering the guide groove of the rubber strip. The surface of the installed sealing rubber strip forms a concave shape, and the surface water can also wash away the debris in the rainy season. The material has high elasticity, so that larger particles of debris are taken away by the tire during the driving process of the vehicle, and the rubber strip will not be damaged and fall off due to the deposition of more debris. At the same time, the maintenance cost is also reduced, the number of construction workers is reduced in the later maintenance, and the number of maintenance and replacement times is reduced to 1:3 or 4 times. The secondary sealing cost of the traditional rubber strip surface and the construction safety maintenance time are also reduced, the safety risk is reduced, and the traffic time of the closed section of the road is ended ahead of schedule, which alleviates unnecessary traffic accidents caused by vehicle congestion.

[0029] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0030] This specification uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the utility model.

Claims

1. An expansion joint sealing rubber strip, characterized in that: It comprises a main body, wherein two sides of the main body are respectively provided with a hanging ear, the lower end of the hanging ear is connected to the bottom of the two sides of the main body, the bottom surface of the upper end of the hanging ear is flush with the top surface of the main body, and the top surface of the upper end of the hanging ear is higher than the top surface of the main body; In a natural state, the axis of the hanging ear is set at a certain angle to the central axis of the main body; the hanging ear is squeezed by the extrusion pressure on both sides and moves closer to the main body. At this time, the bottom surface of the upper end of the hanging ear is flush with the top surface of the main body, and a guide groove for drainage is formed between the hanging ears on both sides and the top surface of the main body.

2. The expansion joint sealing rubber strip according to claim 1, characterized in that: In a natural state, the axis of the hanging ear is arranged at an angle of 20-60° with the central axis of the main body.

3. The expansion joint sealing rubber strip according to claim 1, characterized in that: In a natural state, the axis of the ear is arranged at an angle of 30° with the central axis of the main body.

4. The expansion joint sealing rubber strip according to claim 1, characterized in that: The main body and the hanging ear are integrally arranged.

5. The expansion joint sealing rubber strip according to claim 1, characterized in that: An ejector bar is arranged in the middle of the top surface of the main body, and the ejector bar is used to prevent oversized sand and gravel debris from staying above the main body.

6. The expansion joint sealing rubber strip according to claim 5, characterized in that: The main body, the hanging ears and the ejection strip are integrally arranged.

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