A high-damping large-displacement seamless telescopic device

Abstract

The application discloses a high-damping large-displacement seamless telescopic device, which comprises steel baffle plates arranged correspondingly on two sides, a plurality of foamed rubber bodies and I-shaped steel plates arranged between the two steel baffle plates, and the foamed rubber bodies and the I-shaped steel plates are arranged in sequence and at intervals; the steel baffle plates on the two sides are correspondingly installed on the two sides of a bridge construction joint, the upper end surfaces of the foamed rubber bodies and the I-shaped steel plates are matched with the bridge to form a complete pavement, and the foamed rubber bodies can be contracted. The high-damping large-displacement seamless telescopic device is composed of I-shaped steel plates and foamed rubber bodies arranged in sequence and at intervals, the surface is seamlessly connected, there is no impact when a vehicle passes, and there is no obvious vibration noise, so that the service performance and durability of the telescopic device are improved.

Description

Technical Field

[0001] This invention relates to the field of telescopic device technology and equipment, specifically a high-damping, large-displacement seamless telescopic device. Background Technology

[0002] In the prior art, a bridge expansion joint is a device installed on a bridge to prevent the bridge from cracking or being damaged due to changes in climate and temperature. Therefore, during construction, a structural joint can be made along the length of the bridge for horizontal expansion and contraction, and the bridge expansion joint is used to connect this structural joint and is an important component of the bridge.

[0003] Nowadays, with the increase in vehicles, bridges bear increasingly frequent reciprocating loads, and the performance of bridge expansion joints directly affects the safety of bridges and roads. Under frequent loading, fatigue damage to expansion joint accessories can easily occur, leading to premature bridge failure. For urban bridges, noise at the expansion joints is also a significant source of pollution. Therefore, researching a seamless bridge expansion joint that can reduce impact, traffic noise, and vibration is of great significance for improving bridge performance, preventing early damage, and enhancing driving comfort.

[0004] Because expansion joints are exposed to the atmosphere for extended periods, operate in harsh environments, and directly bear traffic loads, the deficiencies in their design, construction, and maintenance are mainly manifested in the following aspects:

[0005] 1. Expansion joints in bridge expansion joints cause significant impact when vehicles pass over them, making the expansion joint structure highly susceptible to damage and fatigue failure.

[0006] 2. The modular expansion joints specified in the standard JT / T 327-2016 "Highway Bridge Expansion Joints" are composed of side beams, with an expansion range of 0~80mm per unit; existing expansion joints cannot meet this requirement.

[0007] 3. In the existing technology, due to the large gap of the expansion joint, once stones, soil and other garbage accumulate, it will not only affect the normal operation of the expansion device and easily cause accidents, but also make cleaning difficult in the later stage.

[0008] 4. In existing modular telescopic devices, the gaps and V-shaped rubber strips form a cavity, generating air compression vibration noise when a wheel passes over it. This noise problem is difficult to manage and resolve.

[0009] 5. When high-speed vehicles pass over telescopic devices, it causes the vehicles to bounce and vibrate, and existing telescopic devices cannot solve this problem.

[0010] 6. The V-shaped rubber strips of the modular telescopic device are damaged by the pressure of mud and stones, and need to be replaced in time, which increases maintenance costs.

[0011] 7. In the existing technology, it is very difficult to adjust the installation gap size of the telescopic device, which requires changing the overall structure and is not worth the effort.

[0012] 8. Existing expansion joints have low damping, making it difficult to reduce bridge vibration and indirectly increasing noise problems.

[0013] Therefore, in order to solve the above problems, it is necessary to develop a high-damping, large-displacement seamless telescopic device. Summary of the Invention

[0014] The purpose of this invention is to address the shortcomings of existing technologies by providing a high-damping, large-displacement seamless expansion joint. This improves the damping performance of bridge expansion joints, reduces bridge vibration, enhances bridge performance and durability, and the seamless expansion connection reduces impact, traffic noise, and ride comfort, while also avoiding subsequent maintenance costs. The technical solution is as follows:

[0015] A high-damping, large-displacement seamless telescopic device includes steel baffles arranged on both sides, and a plurality of foamed rubber bodies and I-shaped steel plates are arranged between the steel baffles on both sides. The foamed rubber bodies and I-shaped steel plates are arranged alternately. The steel baffles on both sides are installed on both sides of the bridge structural joint. The upper surfaces of the foamed rubber bodies and I-shaped steel plates cooperate with the bridge to form a complete road surface, and the foamed rubber bodies can be contracted.

[0016] Preferably, a support shaft is provided between the steel baffles on both sides, which penetrates the steel baffles, the foamed rubber body, and the I-shaped steel plate. The steel baffles on both sides are fixed to the bridge structural joint through the through support shaft.

[0017] Preferably, a guide shaft is also provided between the steel baffles on both sides, which penetrates the steel baffles, the foamed rubber body, and the I-shaped steel plate. This guide shaft is also fixed inside the bridge structural joint.

[0018] Preferably, connecting bolts are provided between the steel baffles on both sides, penetrating the steel baffles, the foamed rubber body, and the I-shaped steel plate. Nuts are also installed on the connecting bolts. The steel baffles on both sides, the foamed rubber body on the inner side, and the I-shaped steel plate are connected and installed as a whole by the cooperation of the connecting bolts and nuts.

[0019] Preferably, a support shaft protective housing is also provided on the outer side of the support shaft. The support shaft protective housing is installed on the steel baffles on both sides, and a rubber ring for fixing the support shaft is also installed inside the support shaft protective housing.

[0020] Preferably, a guide shaft protective housing is provided on the outer side of the guide shaft. The guide shaft protective housing is installed on the steel baffles on both sides, and a rubber ring for fixing the guide shaft is installed inside the guide shaft protective housing.

[0021] Preferably, the expansion and contraction of the foamed rubber body is set to 0-8 mm per unit.

[0022] The present invention has the following beneficial effects:

[0023] 1) The high-damping, large-displacement seamless telescopic device of the present invention is composed of I-shaped steel plates and foamed rubber bodies arranged in sequence at intervals, with seamless surface connection. There is no impact when vehicles pass through, and no obvious vibration or noise, which improves the performance and durability of the telescopic device.

[0024] 2) In the high-damping large-displacement seamless expansion device of the present invention, the I-shaped steel plate and the foamed rubber body are arranged in sequence at intervals. The foamed rubber body can effectively expand and contract, with an expansion and contraction amount of 0-8mm per unit, which can effectively improve the damping performance, reduce bridge vibration, and improve the bridge life.

[0025] 3) The high-damping, large-displacement seamless telescopic device of the present invention can provide a complete surface for the bridge structure, without the accumulation of garbage, and can resist the invasion of water and other harmful substances on the bridge structure without the need for subsequent cleaning; the high-damping, large-displacement seamless telescopic device of the present invention can effectively solve the sudden jump and vibration phenomenon generated when vehicles pass through.

[0026] 4) The high-damping, large-displacement seamless telescopic device of the present invention is composed of I-shaped steel plates and foamed rubber bodies arranged in sequence at intervals and seamlessly connected. The upper part of the I-shaped steel plate effectively protects the foamed rubber body, and the foamed rubber body will not be squeezed and damaged by soil and stones, so there is no need for replacement and maintenance costs. Connecting bolts and nuts are installed on the telescopic body for temporary anchoring, and the telescopic gap can be adjusted arbitrarily according to the installation temperature.

[0027] 5) In this device, guide shafts are installed in the holes in the upper part of the steel baffles on both sides, and support shafts are installed in the holes in the lower part; rubber rings with stabilizing effect are set between the guide shafts, support shafts and telescopic devices to adjust the installation position and direction of the guide shafts and support shafts; and connecting bolts and nuts are also installed on the steel baffles on both sides for temporary anchoring of the overall structure, and the telescopic gap can be adjusted arbitrarily according to the installation temperature. Attached Figure Description

[0028] Figure 1 This is a structural diagram of the present invention;

[0029] Figure 2 This is a side view of the present invention;

[0030] Figure 3 for Figure 2 Sectional view of AA;

[0031] Figure 4 for Figure 2 BB section view;

[0032] Figure 5 for Figure 2 CC section view. Detailed Implementation

[0033] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. These embodiments are implemented based on the technical solutions of the present invention, and it should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0034] like Figures 1 to 5 As shown, a high-damping, large-displacement seamless expansion joint includes steel baffles 1 arranged on both sides, and a plurality of foamed rubber bodies 2 and I-shaped steel plates 3 are arranged between the steel baffles 1 on both sides. The foamed rubber bodies 2 and I-shaped steel plates 3 are arranged alternately. The steel baffles 1 on both sides are installed on both sides of the bridge structural joint. The upper surfaces of the foamed rubber bodies 2 and I-shaped steel plates 3 cooperate with the bridge to form a complete road surface. The foamed rubber bodies 2 can shrink, and the expansion and contraction of the foamed rubber bodies 2 is set to 0-8mm per unit.

[0035] A support shaft 8 is provided between the steel baffles 1 on both sides, which penetrates the steel baffles 1, the foamed rubber body 2, and the I-shaped steel plate 3. The steel baffles 1 on both sides are fixed in the bridge structural joint through the support shaft 8. A guide shaft 5 is also provided between the steel baffles 1 on both sides, which penetrates the steel baffles 1, the foamed rubber body 2, and the I-shaped steel plate 3. The guide shaft 5 is also fixed in the bridge structural joint.

[0036] A connecting bolt 11 is provided between the steel baffles 1 on both sides, the foamed rubber body 2 and the I-shaped steel plate 3, and a nut 12 is installed on the connecting bolt 11. The steel baffles 1 on both sides, the foamed rubber body 2 and the I-shaped steel plate 3 on the inner side are connected and installed into one piece by the cooperation of the connecting bolt 11 and the nut 12.

[0037] A support shaft protective housing 10 is also provided on the outside of the support shaft 8. The support shaft protective housing 10 is installed on the steel baffles 1 on both sides, and a rubber ring 6 for fixing the support shaft 8 is also installed inside the support shaft protective housing 10. A guide shaft protective housing 7 is also provided on the outside of the guide shaft 5. The guide shaft protective housing 7 is installed on the steel baffles 1 on both sides, and a rubber ring 6 for fixing the guide shaft 5 is also installed inside the guide shaft protective housing 7.

[0038] In this device, corresponding through holes are provided on the upper part of the bridge body. Steel baffles 1 are installed between the bridge bodies, with the ends of the steel baffles 1 attached to the bridge bodies. Multiple foamed rubber materials 2 and multiple I-shaped steel plates 3 are installed between the two steel baffles 1, spaced apart in sequence. This provides a complete surface for the bridge structure, achieving a seamless connection, eliminating impact and significant vibration noise when vehicles pass over it, effectively solving the sudden bounce and vibration phenomena caused by vehicles passing over it. The foamed rubber materials 2 combined with the I-shaped steel plates 3 have high damping characteristics, reducing bridge vibration.

[0039] The guide shaft 5 of this device is installed on the bridge body, and the support shaft 8 is also installed on the bridge body; the rubber ring 6 serves to fix the guide shaft 5, and the guide shaft protective shell 7 is used to protect the guide shaft 5; the support shaft 8 is used to support the normal operation of the bridge body, and the support shaft protective shell 10 is used to protect the support shaft 8 from collisions; the upper part of the I-shaped steel plate 3 effectively protects the foamed rubber body 2, and the foamed rubber body 2 will not be squeezed and damaged by mud and stones, so there is no need for replacement and maintenance costs.

[0040] In this device, connecting bolts 11 and nuts 12 are also installed between the two steel baffles 1 for temporary anchoring. When the gap needs to be adjusted according to the installation temperature, the size can be easily changed by simply adjusting the nuts 12.

[0041] The above-described specific embodiments are merely preferred embodiments of the present invention and are not intended to limit the implementation of the present invention or the scope of the claims. All equivalent changes and modifications made in accordance with the scope of patent protection of the present invention should be included within the scope of the present invention patent application.

Claims

1. A high-damping, large-displacement seamless telescopic device, characterized in that: It includes steel baffles (1) set on both sides, and several foamed rubber bodies (2) and I-shaped steel plates (3) are set between the steel baffles (1) on both sides. The foamed rubber bodies (2) and I-shaped steel plates (3) are set in sequence at intervals. The steel baffles (1) on both sides are installed on both sides of the bridge structural joint. The upper surfaces of the foamed rubber bodies (2) and I-shaped steel plates (3) cooperate with the bridge to form a complete road surface. The foamed rubber bodies (2) can be shrunk. A support shaft (8) is also provided between the steel baffles (1) on both sides, which penetrates the steel baffles (1), the foamed rubber body (2), and the I-shaped steel plate (3). The steel baffles (1) on both sides are fixed in the bridge structural joint through the through support shaft (8). A guide shaft (5) is also provided between the steel baffles (1) on both sides, which penetrates the steel baffles (1), the foamed rubber body (2), and the I-shaped steel plate (3). The guide shaft (5) is also fixed in the bridge structural joint. A connecting bolt (11) is provided between the steel baffles (1) on both sides, the foamed rubber body (2) and the I-shaped steel plate (3), and a nut (12) is installed on the connecting bolt (11). The steel baffles (1) on both sides, the foamed rubber body (2) on the inside and the I-shaped steel plate (3) are connected and installed as a whole by the cooperation of the connecting bolt (11) and the nut (12).

2. The high-damping, large-displacement seamless telescopic device according to claim 1, characterized in that: The outer side of the support shaft (8) is also provided with a support shaft protective housing (10), which is installed on the steel baffles (1) on both sides, and a rubber ring (6) for fixing the support shaft (8) is also installed inside the support shaft protective housing (10).

3. The high-damping, large-displacement seamless telescopic device according to claim 1, characterized in that: The outer side of the guide shaft (5) is also provided with a guide shaft protective housing (7), which is installed on the steel baffles (1) on both sides, and a rubber ring (6) for fixing the guide shaft (5) is also installed inside the guide shaft protective housing (7).

4. The high-damping, large-displacement seamless telescopic device according to claim 1, characterized in that: The expansion and contraction of the foamed rubber body (2) is set to 0-8 mm per unit.

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