Bridge expansion joint sealant belt cleaning device

Abstract

The utility model discloses a bridge expansion joint waterstop belt cleaning device, including frame, be located on the walking mechanism and the belt mechanism of frame of removing, the walking mechanism includes being located on the wheel of frame and the first power mechanism of drive wheel, the belt mechanism of removing includes being located on the second power mechanism of frame, is located the cutter of the horizontal rotation of '' a word '' shape on the second power mechanism and at the bottom of frame. The utility model discloses simple structure, and convenient operation can remove more than one meter waterstop belt per minute, and the low manufacturing cost can reduce construction cost by more than 50%.

Description

Technical Field

[0001] This utility model pertains to bridge maintenance equipment, specifically relating to a device for removing waterstops from bridge expansion joints. Background Technology

[0002] Expansion joints on highway bridges are specialized structures installed during bridge construction to accommodate structural deformation caused by factors such as temperature changes and concrete shrinkage. They are typically located where the bridge deck pavement separates from the railings. Their core function is to allow for free horizontal and vertical expansion and contraction of the bridge, while simultaneously ensuring smooth driving and meeting waterproofing and dustproofing requirements. Figure 1 As shown, the bridge expansion joint S includes a steel beam slot c installed on the bridge deck d to form a gap a, and a waterstop b embedded in the gap a within the steel beam slot c. The waterstop, a rubber product, is a crucial component of the bridge expansion joint. Installed within the steel beam slots on both sides of the expansion joint, it seals the gap, preventing water, dust, and impurities from entering. It not only provides waterproofing but also blocks the intrusion of external factors such as wind, sand, and rain, ensuring the bridge structure is not corroded or damaged. Over time, the waterstop is affected by ultraviolet radiation, climate change, mechanical wear, and chemical corrosion, gradually aging, hardening, cracking, and even detaching. This damage reduces its sealing performance, allowing moisture to seep into the gap, leading to steel reinforcement corrosion and structural damage. If not removed promptly, it may result in more serious structural safety hazards.

[0003] Currently, waterstop replacement is done manually. Whether it's removing or installing waterstops, the labor intensity is very high, the work efficiency is low, and it's difficult to completely remove the old waterstops.

[0004] According to patent document (CN110195407A), a mechanical method is also used to replace the waterstop. This method involves first cutting and separating the waterstop in the expansion joint from the waterstop in the steel beam slot using a vertical circular saw, then piercing the cut waterstop on both sides with a cutting tool to pull the waterstop out of the steel beam slot, and finally pushing the remaining waterstop out of the steel beam slot using a guide rod. This method has a very complex structure, complicated mechanical actions, and high manufacturing costs. Utility Model Content

[0005] The purpose of this invention is to provide a simple and easy-to-use device for removing waterstops from bridge expansion joints.

[0006] The technical solution adopted to achieve the purpose of this utility model is as follows: The bridge expansion joint waterstop removal device provided by this utility model includes a frame, a traveling mechanism mounted on the frame, and a strip removal mechanism. The traveling mechanism includes wheels mounted on the frame and a first power mechanism driving the wheels. The strip removal mechanism includes a second power mechanism mounted on the frame and a horizontally rotating "I"-shaped cutter mounted on the second power mechanism and located at the bottom of the frame. The first power mechanism includes a first motor mounted at the rear of the frame and a reduction mechanism connected to the first motor. The reduction mechanism is connected to the axle of the rear wheel. The second power mechanism includes a second motor mounted at the front of the frame and a connecting shaft connected to the shaft of the second motor. The cutter includes a screw and a strip-shaped cutter block at the bottom of the screw, or the cutter includes a screw and a strip-shaped cutter block, with a threaded connector on the cutter block, which is connected to the screw through the threaded connector. The cutter block is threadedly connected to the connecting shaft through the screw.

[0007] The frame is a flat plate structure, and the wheels include two front wheels and two rear wheels that are respectively mounted on the front and rear of the bottom of the frame via axles.

[0008] The first motor and the second motor are connected to the control box via wires.

[0009] The frame is equipped with handrails.

[0010] The blade block is made of steel, with carbide cutting blocks welded to the four corners at both ends to form the cutting edge, or the blade block itself is made of carbide. Beneficial effects

[0011] This utility model has a very simple structure. A power unit mounted on a mobile frame drives a straight-line cutter to rotate, breaking and removing the waterstop in one go. It can remove more than one meter per minute (while manually removing one meter of waterstop takes one hour), significantly saving construction time. It is easy to use and operate; simply place the device on the bridge expansion joint, press the cutter into the gap, and the device will move autonomously to complete the removal of the old waterstop, achieving a very clean result. This device has low manufacturing costs, reducing construction costs by more than 50%.

[0012] The technical solution of this utility model will be further described below with reference to the accompanying drawings. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a bridge expansion joint.

[0014] Figure 2 This is a schematic diagram of the structure of this utility model.

[0015] Figure 3 This is the left view of this utility model.

[0016] Figure 4This is the right view of this utility model.

[0017] Figure 5 This is a top view of the present invention.

[0018] Figure 6 This is a schematic diagram of the cutting tool in this utility model.

[0019] Figure 7 These are schematic diagrams of different cutting tool structures.

[0020] Figure 8 yes Figure 7 An exploded view of the cutting tool shown.

[0021] Figure 9 This is a schematic diagram of the usage state of this utility model. Detailed Implementation

[0022] See Figure 2 —5. The bridge expansion joint waterstop removal device provided by this utility model includes a frame 6, a traveling mechanism and a strip removal mechanism on the frame 6. The traveling mechanism includes a wheel on the frame 6 and a first power mechanism for driving the wheel. The strip removal mechanism includes a second power mechanism on the frame 6 and a horizontally rotating "I"-shaped cutter 8 on the second power mechanism and located at the bottom of the frame 6.

[0023] More specifically, the structure is as follows: the frame 6 is a flat metal plate structure, and the wheels include two front wheels 4 and two rear wheels 4' respectively mounted on the bottom of the frame 6 via axles 9; the first power mechanism includes a first motor 1 mounted on the rear of the frame 6 and a reduction mechanism 2 connected to the first motor 1, the reduction mechanism 2 being connected to the axle 9 on which the rear wheels 4' are mounted; the second power mechanism includes a second motor 5 mounted on the front of the frame 6 and a connecting shaft 7 connected to the shaft of the second motor 5, the cutter 8 being connected to the second motor 5 via the connecting shaft 7; the first motor 1 and the second motor 5 are connected to the control box 11 via wires 10.

[0024] The first motor 1 can be an AC or DC motor, which is decelerated by the reduction mechanism 2; the second motor 5 can be a high-speed AC or DC motor.

[0025] The frame 6 is equipped with a handrail 3, which allows workers to hold onto the frame 6 while it is moving, ensuring that the frame 6 moves more stably.

[0026] The cutting tool 8, as Figure 6As shown, the tool includes a screw 801 and a strip-shaped cutting block 802 located at the bottom of the screw 801. The cutting block 802 is made of steel, and carbide cutting edges 803 are welded to its four corners at both ends to form cutting edges. The cutting block 802 is threadedly connected to the connecting shaft 7 via the screw 801. The width of the cutting block 802 is adapted to the width of the gap a of the bridge expansion joint S, and the length is adapted to the distance between the groove walls c of the steel beams on both sides of the gap a of the bridge expansion joint S. The cutting block 802 of the tool 8 can also be made of carbide.

[0027] The cutting tool 8 can also adopt other structures, such as Figure 7 , Figure 8 As shown, the screw 801 and the cutter block 802 adopt a separate structure. The cutter block 802 is equipped with a threaded connector 804, which connects the cutter block 802 to the screw 801. The screw 801 uses a thread with the opposite rotation direction to the second motor 5. With this structure, after the screw 801 is threadedly connected to the connecting shaft 7, the cutter block 802 can be rotated to adjust its position on the screw 801, thus meeting the height requirements of the steel beam groove c in different bridge expansion joints a from the ground, resulting in better adaptability.

[0028] During the removal of the waterstop, first install the cutter 8 on the connecting shaft 7 connected to the shaft of the second motor 5, so that the cutter block 802 of the cutter 8 can just extend downward into the steel beam slot c in the gap a of the bridge expansion joint S (see...). Figure 2 —3), then move the device to the expansion joint where the waterstop needs to be removed, and insert the cutter 8 horizontally downwards into the steel beam slot c in the expansion joint gap a to press down the old waterstop b. Simultaneously start the first motor 1 and the second motor 5 through the control box 11. The first motor 1 drives the frame 8 to move along the expansion joint at a speed of about 1-3 meters per minute through the reduction mechanism 2. The second motor 5 drives the cutter 8 to rotate at a speed of about 700-1400 revolutions per minute. As the cutter 8 moves with the frame 6, it uses its cutting edge to completely break up the old waterstop b and remove it cleanly from the steel beam slot c (see Figure 9 ).

Claims

1. A device for removing waterstop strips from bridge expansion joints, characterized in that: The system includes a frame, a running mechanism mounted on the frame, and a belt removal mechanism. The running mechanism includes wheels mounted on the frame and a first power mechanism driving the wheels. The belt removal mechanism includes a second power mechanism mounted on the frame and a horizontally rotating "I"-shaped cutter mounted on the second power mechanism and located at the bottom of the frame. The first power mechanism includes a first motor mounted at the rear of the frame and a reduction mechanism connected to the first motor, with the reduction mechanism connected to the axle of the rear wheel. The second power mechanism includes a second motor mounted at the front of the frame and a connecting shaft connected to the shaft of the second motor. The cutter includes a screw and a strip-shaped cutter block at the bottom of the screw, or the cutter includes a screw and a strip-shaped cutter block, with a threaded connector on the cutter block, which is connected to the screw through the threaded connector. The cutter block is threadedly connected to the connecting shaft through the screw.

2. The bridge expansion joint waterstop removal device according to claim 1, characterized in that: The frame is a flat plate structure, and the wheels include two front wheels and two rear wheels that are respectively mounted on the front and rear of the bottom of the frame via axles.

3. The bridge expansion joint waterstop removal device according to claim 2, characterized in that: The first and second motors are connected to the control box via wires.

4. The bridge expansion joint waterstop removal device according to any one of claims 1 to 3, characterized in that: The frame is equipped with handrails.

5. The bridge expansion joint waterstop removal device according to claim 1, characterized in that: The blade block is made of steel, with carbide cutting blocks welded to the four corners at both ends to form the cutting edge, or the blade block itself is made of carbide.

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