Expansion joint waterproof adhesive tape for rail transit

Abstract

The utility model relates to the technical field of waterproof rubber strips, discloses an expansion joint waterproof rubber strip for rail transit, and aims to solve the problems that a waterproof rubber strip in the prior art seals an upper port of an expansion joint to achieve a better waterproof effect, the waterproof rubber strip can be telescopically adjusted, the expansion of a bridge body is caused by temperature change, and a certain gap is formed between beam ends. The expansion joint is sealed and waterproof through the waterproof adhesive tape, the waterproof adhesive tape is generally arranged to be of a V-shaped structure and the like in order to meet the use requirement of the expansion joint, and the waterproof adhesive tape has the effects of being good in toughness, resistant to high temperature and resistant to corrosion, so that the service life of the waterproof adhesive tape can be prolonged, and meanwhile the expansion joint can be better protected; the high-temperature-resistant coating is sprayed on the telescopic protective rubber strip, the polyurethane elastomer is arranged in the telescopic protective rubber strip, the telescopic protective rubber strip is better protected through the high-temperature-resistant coating and the polyurethane elastomer, the service life of the telescopic protective rubber strip is prolonged, and the telescopic protective rubber strip is convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of waterproof rubber strips, in particular to a waterproof rubber strip for expansion joints used in rail transportation. Background Art

[0002] In the construction of rail transit bridges, due to the expansion and contraction of the bridge beam body caused by temperature changes, there is a certain gap between the beam ends. Usually, an expansion device is set at the gap of the beam end to adapt to the three-dimensional displacement of the beam end caused by the temperature difference. The expansion device is an important connecting component between the bridge beam ends. It also plays the role of adapting to the free expansion and contraction of the bridge end and preventing water from flowing into the lower structure of the beam body. Its quality and waterproof performance will directly affect the performance of the beam end and the lower components of the beam end.

[0003] At present, the expansion devices commonly used in domestic high-speed railway bridges, subways and other rail transit bridges are composed of steel components and waterproof rubber strips. Beam end water retaining platforms are cast on the beam body on both sides of the expansion joint, and steel components are anchored and buried in the beam end water retaining platforms on both sides. The waterproof rubber strips are fixed on the steel components on both sides horizontally, and the upper end of the expansion joint is closed by the waterproof rubber strip, which has a better waterproof effect.

[0004] The installation of the existing retractable waterproof strips on rail transit bridges is relatively fixed, which makes their later replacement very difficult, costly and time-consuming.

[0005] In view of this, the present technical solution proposes a waterproof rubber strip for expansion joints for rail transit, so as to better solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide a waterproof rubber strip for expansion joints for rail transit in order to solve the above-mentioned problems.

[0007] The technical solution adopted by the utility model is as follows: a waterproof rubber strip for expansion joints for rail transit, comprising a first steel section and a second steel section installed inside the expansion joint, wherein the first steel section and the second steel section are both provided with installation notches inside, and the installation notches are clamped with an upper limit frame and a lower limit frame inside;

[0008] A mounting plate is inserted inside the mounting slot and between the upper limit frame and the lower limit frame, and a retractable movable plate is arranged above and below the mounting plate, and the movable plate is fixedly connected to the upper limit frame and the lower limit frame, and the first and second steel sections are inserted with positioning pins inside the upper limit frame above;

[0009] A group of the mounting plates are connected with telescopic protective rubber strips, and a high temperature resistant coating is sprayed on the telescopic protective rubber strips.

[0010] In a preferred embodiment, the first steel section and the second steel section have the same specifications, and the installation notches provided inside the first steel section and the second steel section are T-shaped structures.

[0011] In a preferred embodiment, the upper limit frame and the lower limit frame are L-shaped structures, and the upper limit frame and the lower limit frame are oppositely arranged inside the installation slot.

[0012] In a preferred embodiment, the upper movable plate is fixedly connected to the bottom of the upper limit frame, and the lower movable plate is fixedly connected to the top of the lower limit frame.

[0013] In a preferred embodiment, guide rods are movably inserted into the upper and lower parts of the mounting plate, and the guide rods are fixedly connected to the movable plate. A spring sleeve is sleeved on the guide rods, and the spring sleeve is fixedly connected to the mounting plate and the movable plate.

[0014] In a preferred embodiment, the protruding length of the spring sleeve is smaller than the length of the guide rod inserted into the mounting plate.

[0015] In a preferred embodiment, the telescopic protective rubber strip is composed of a plurality of V-shaped waterproof rubbers, and the plurality of V-shaped waterproof rubbers of the telescopic protective rubber strip are an integrally formed structure.

[0016] In a preferred embodiment, the high temperature resistant coating is a silicone high temperature resistant paint, and a polyurethane elastomer is arranged inside the telescopic protective strip.

[0017] To sum up, due to the adoption of the above-mentioned technical scheme, the beneficial effects of the utility model are: it is easier to install the telescopic protective strip, making it easier to remove the telescopic protective strip from between steel section one and steel section two, saving manpower and increasing work efficiency. At the same time, the telescopic protective strip has good toughness, high temperature resistance and corrosion resistance.

[0018] In the utility model, the upper limit frame and the lower limit frame are pressed toward the position of the mounting plate, and then the upper limit frame, the lower limit frame and the mounting plate are inserted into the mounting grooves provided inside the steel sections 1 and 2, and the upper limit frame, the lower limit frame and the mounting plate are continuously pushed toward the rear ends of the mounting grooves inside the steel sections 1 and 2. When the rear ends of the upper limit frame, the lower limit frame and the mounting plate move to the rear ends of the mounting grooves, and then the positioning pins are inserted into the steel sections 1, 2 and the upper upper limit frame, the upper limit frame, the lower limit frame and the mounting plate can be positioned in the mounting grooves, and at the same time, the upper limit frame and the lower limit frame are clamped in the grooves inside the mounting grooves with the cooperation of the guide rod and the spring sleeve. At this time, the telescopic protective rubber strip can be limited between the steel sections 1 and 2 to play a waterproof role. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure of the middle A area;

[0021] Figure 3 For this utility model Figure 2 A schematic diagram of the structure of the middle B region;

[0022] Figure 4 It is a schematic diagram of the half-section structure of the telescopic protective rubber strip of the utility model.

[0023] Markings in the figure: 1-steel section 1; 2-steel section 2; 3-installation slot; 4-upper limit frame; 5-lower limit frame; 6-installation plate; 7-guide rod; 8-movable plate; 9-spring sleeve; 10-locating pin; 11-telescopic protective strip; 12-high temperature resistant coating; 13-polyurethane elastomer. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0025] The following will be combined Figure 1-Figure 4 A waterproof rubber strip for expansion joints for rail transit according to an embodiment of the utility model is described in detail.

[0026] refer to Figure 1-2 As shown, a waterproof rubber strip for expansion joints for rail transit includes a steel section 1 and a steel section 2 installed on the inner side of the expansion joint, and installation slots 3 are arranged inside the steel section 1 and the steel section 2. The specifications of the steel section 1 and the steel section 2 are the same, and the installation slots 3 arranged inside the steel section 1 and the steel section 2 are T-shaped structures, and an upper limit frame 4 and a lower limit frame 5 are clamped inside the installation slot 3, and the upper limit frame 4 and the lower limit frame 5 are L-shaped structures, and the upper limit frame 4 and the lower limit frame 5 are arranged inside the installation slot 3 inversely.

[0027] refer to Figure 1-3As shown, a mounting plate 6 is inserted inside the mounting groove 3 and located between the upper limit frame 4 and the lower limit frame 5, and a retractable movable plate 8 is arranged above and below the mounting plate 6, and the movable plate 8 is fixedly connected to the upper limit frame 4 and the lower limit frame 5, the upper movable plate 8 is fixedly connected to the bottom of the upper limit frame 4, and the lower movable plate 8 is fixedly connected to the top of the lower limit frame 5, and guide rods 7 are movably inserted in the upper and lower parts of the mounting plate 6, and the guide rod 7 is fixedly connected to the movable plate 8, a spring sleeve 9 is sleeved on the guide rod 7, and the spring sleeve 9 is fixedly connected to the mounting plate 6 and the movable plate 8, and the extended length of the spring sleeve 9 is less than the length of the guide rod 7 inserted inside the mounting plate 6, and positioning pins 10 are inserted into the upper upper limit frame 4 with steel sections 1 and steel sections 2.

[0028] refer to Figure 1 , 2 As shown in 4, a group of mounting plates 6 are connected with a telescopic protective strip 11, which is composed of a plurality of V-shaped waterproof rubbers, and the plurality of V-shaped waterproof rubbers of the telescopic protective strip 11 are an integrally formed structure, and a high-temperature resistant coating 12 is sprayed on the telescopic protective strip 11, and the high-temperature resistant coating 12 is a silicone high-temperature resistant paint, and a polyurethane elastomer 13 is arranged inside the telescopic protective strip 11, and the high-temperature resistant coating 12 and the polyurethane elastomer 13 are used to better protect the telescopic protective strip 11 and increase the service life of the telescopic protective strip 11.

[0029] The advantages of the present application are as follows: it is easier to install the telescopic protective rubber strip 11, making it easier to remove the telescopic protective rubber strip 11 from between the steel section 1 and the steel section 2, thus saving manpower and increasing work efficiency.

[0030] Working principle: First install the steel section 1 and the steel section 2 at the relative positions inside the expansion joint, press the upper limit frame 4 and the lower limit frame 5 to the position of the mounting plate 6, and then insert the upper limit frame 4, the lower limit frame 5 and the mounting plate 6 into the mounting slot 3 set inside the steel section 1 and the steel section 2, and continue to push the upper limit frame 4, the lower limit frame 5 and the mounting plate 6 to the rear end of the mounting slot 3 inside the steel section 1 and the steel section 2. When the rear end of 6 moves to the rear end of the installation slot 3, the positioning pin 10 is then inserted into the interior of the steel section 1, the steel section 2 and the upper upper limit frame 4, so that the upper limit frame 4, the lower limit frame 5 and the mounting plate 6 can be positioned in the installation slot 3. At the same time, with the cooperation of the guide rod 7 and the spring sleeve 9, the upper limit frame 4 and the lower limit frame 5 are clamped in the slot inside the installation slot 3. At this time, the telescopic protective strip 11 can be limited between the steel section 1 and the steel section 2 to play a waterproof role.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof rubber strip for expansion joints for rail transit, comprising a first steel section (1) and a second steel section (2) installed inside the expansion joint, characterized in that: The first steel section (1) and the second steel section (2) are both provided with mounting notches (3) inside, and the mounting notches (3) are internally clamped with an upper limit frame (4) and a lower limit frame (5); A mounting plate (6) is inserted inside the mounting slot (3) and between the upper limit frame (4) and the lower limit frame (5), and a retractable movable plate (8) is arranged above and below the mounting plate (6), and the movable plate (8) is fixedly connected to the upper limit frame (4) and the lower limit frame (5), and positioning pins (10) are inserted between the first steel section (1) and the second steel section (2) and the upper upper limit frame (4); A group of the mounting plates (6) are connected with telescopic protective rubber strips (11), and a high temperature resistant coating (12) is sprayed on the telescopic protective rubber strips (11).

2. A waterproof rubber strip for expansion joints for rail transit as claimed in claim 1, characterized in that: The first steel section (1) and the second steel section (2) have the same specifications, and the installation slots (3) arranged inside the first steel section (1) and the second steel section (2) are T-shaped structures.

3. The waterproof rubber strip for expansion joints for rail transit according to claim 1, characterized in that: The upper limit frame (4) and the lower limit frame (5) are L-shaped structures, and the upper limit frame (4) and the lower limit frame (5) are oppositely arranged inside the installation slot (3).

4. The waterproof rubber strip for expansion joints for rail transit according to claim 1, characterized in that: The upper movable plate (8) is fixedly connected to the bottom of the upper limit frame (4), and the lower movable plate (8) is fixedly connected to the top of the lower limit frame (5).

5. The waterproof rubber strip for expansion joints for rail transit according to claim 1, characterized in that: The interior of the mounting plate (6) is movably connected with guide rods (7) at the top and bottom, and the guide rods (7) are fixedly connected to the movable plate (8). A spring sleeve (9) is sleeved on the guide rod (7), and the spring sleeve (9) is fixedly connected to the mounting plate (6) and the movable plate (8).

6. A waterproof rubber strip for expansion joints for rail transit as claimed in claim 5, characterized in that: The extended length of the spring sleeve (9) is less than the length of the guide rod (7) inserted into the interior of the mounting plate (6).

7. The waterproof rubber strip for expansion joints for rail transit according to claim 1, characterized in that: The telescopic protective rubber strip (11) is composed of a plurality of V-shaped waterproof rubbers, and the plurality of V-shaped waterproof rubbers of the telescopic protective rubber strip (11) are an integrally formed structure.

8. The waterproof rubber strip for expansion joints for rail transit according to claim 1, characterized in that: The high temperature resistant coating (12) is an organic silicon high temperature resistant paint, and a polyurethane elastomer (13) is arranged inside the telescopic protective rubber strip (11).

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