Old suspender wire drawing equipment for replacing suspender of concrete arch bridge

Abstract

The utility model relates to bridge engineering technical field discloses a concrete arch bridge suspender replacement uses old suspender wire drawing equipment, including mounting panel, the bottom fixedly connected with base of mounting panel, the front side of mounting panel is provided with positioning mechanism, the middle part of base is provided with the positioning hole, the top right side of base is provided with recovery mechanism, the top left side of base is provided with water delivery mechanism, the front side of mounting panel is provided with steering mechanism, the positioning mechanism includes a plurality of electromagnetic chuck, the top of a plurality of electromagnetic chuck all is fixedly connected in the bottom of base, the top of mounting panel is provided with the accommodation groove, in the utility model, through the alignment drilling point of positioning hole, and through electromagnetic chuck will device adsorption fixed ground, and hydraulic pump carries out the energy supply, makes the hydraulic cylinder drive drill bit drilling, and under the guidance of guide rod perpendicular motion, reduces the structural damage, promotes construction efficiency and quality, reduces cost and risk.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, and in particular to a wire-pulling device for replacing old hangers of concrete arch bridges. Background Technology

[0002] Concrete-filled steel pipe arch bridges with suspenders are widely used in modern bridge construction due to their high structural strength. However, when replacing the suspenders of a concrete arch bridge, it is necessary to use a wire-pulling device for the old suspenders. This device consists of a drilling machine, a cutting machine, and a traction mechanism. By precisely clamping the old suspenders and gradually pulling them out, the old suspenders can be replaced. This allows the device to efficiently and safely remove the old suspenders, minimizing disturbance to the bridge structure and ensuring the smooth replacement of the suspenders in the concrete arch bridge.

[0003] A search revealed Chinese Patent Publication No. CN118029290A, which discloses a wire-pulling device for replacing old hangers in concrete arch bridges. The device includes a mounting bracket assembly and a wire-pulling assembly. The mounting bracket assembly includes a mounting plate with two sets of symmetrical semicircular grooves and two sets of symmetrical vertical grooves, each semicircular groove connecting to a corresponding vertical groove. The wire-pulling assembly includes a jack connected to a jack bracket, which in turn connects to the mounting plate. The piston rod of the jack passes through the jack bracket and connects to a square rod with symmetrical cross grooves. The square rod connects to an installation rod, which in turn connects to a connector. This invention relates to the field of hanger replacement technology, and more particularly to a wire-pulling device for replacing old hangers in concrete arch bridges. This invention addresses the shortcomings of existing technologies by developing a wire-pulling device for replacing old hangers in concrete arch bridges. This invention can pull out the hangers by shaking and at the same time clean the concrete adhering to the hanger surface. However, in actual use, the drilling machine will slip during drilling, causing the drill to get stuck or the cable hole to shift. In addition, washing the concrete with a large amount of water will cause environmental pollution. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a wire-pulling device for replacing old hangers of concrete arch bridges, which aims to improve the problem of slippage of drilling machines during drilling and the environmental pollution caused by large amounts of water washing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a wire-pulling device for replacing old hangers of concrete arch bridges, comprising an installation plate, a base fixedly connected to the bottom of the installation plate, a positioning mechanism provided on the front side of the installation plate, a positioning hole opened in the middle of the base, a recycling mechanism provided on the top right side of the base, a water conveying mechanism provided on the top left side of the base, and a steering mechanism provided on the front side of the installation plate; the positioning mechanism includes multiple electromagnetic chucks, the top ends of which are fixedly connected to the bottom of the base; a placement groove is opened on the top of the installation plate; a hydraulic cylinder is fixedly connected to the top of the installation plate; a piston rod is slidably connected to the bottom of the hydraulic cylinder; a fixing plate is fixedly connected to the bottom of the piston rod; a servo motor is fixedly connected to the bottom of the fixing plate; a drill bit is fixedly connected to the output end of the servo motor; a reinforcing component is provided on the top of the base; and a pressure component is provided on the front side of the installation plate.

[0006] The above technical solution involves fixing the device to the reinforcing steel bar via an electromagnetic chuck, then activating the hydraulic cylinder to move the piston rod up and down the fixing plate, while simultaneously activating the servo motor to rotate the drill bit, thereby drilling a hole in the ground at the bottom of the device. Furthermore, the positioning hole provides guidance for the device's drilling action, preventing incorrect installation.

[0007] As a further description of the above technical solution:

[0008] The recycling mechanism includes a filter tank, the bottom of which is fixedly connected to the top right side of the base. A high-pressure pump is fixedly connected to the top of the filter tank. A filter screen is fixedly connected to the middle of the inner wall of the filter tank. A recycling pipe is connected to the top of the front end of the filter tank. A water suction nozzle is fixedly connected to the bottom of the recycling pipe. A fixing block is fixedly connected to the outer wall of the recycling pipe. A water-blocking component is provided on the top of the base.

[0009] The above technical solution involves starting a high-pressure pump to generate suction at the bottom of the filter tank, and then recovering the wastewater in the positioning hole through a recovery pipe. The wastewater is then drawn into the filter tank through the suction nozzle, filtered through the filter screen, and stored for reuse.

[0010] As a further description of the above technical solution:

[0011] The water delivery mechanism includes a water tank, the bottom of which is fixedly connected to the top left side of the base. A water pump is fixedly connected to the top of the water tank, and a water delivery pipe is connected to the top of the water pump. Two rotating nozzles are fixedly connected to the front end of the water delivery pipe.

[0012] The above technical solution involves using a water pump to extract clean water from the water tank, which is then guided through a water pipe and sprayed out from two rotating nozzles.

[0013] As a further description of the above technical solution:

[0014] The steering mechanism includes multiple universal joints 1, the top ends of which are fixedly connected to the bottom of the fixed plate, the bottom ends of which are fixedly connected to electric push rods, the bottom ends of which are fixedly connected to universal joints 2, and the top ends of which are connected to the outer walls of the two rotating nozzles.

[0015] The above technical solution involves adjusting the length of multiple electric push rods to change the position of the corresponding rotating nozzles, thereby cooling and cleaning different parts of the drill bit.

[0016] As a further description of the above technical solution:

[0017] The reinforcement assembly includes two guide rods, the bottom ends of which are fixedly connected to the top left and right sides of the base. The top of the fixing plate has two guide holes, and the top ends of the two guide rods are fixedly connected to limit blocks.

[0018] The above technical solution guides and limits the position of the fixed plate by having the guide rod slide within the guide hole, while the two limiting blocks prevent the fixed plate from detaching from the device.

[0019] As a further description of the above technical solution:

[0020] The pressurization assembly includes an oil tank, the rear side of which is fixedly connected to the front right end of the mounting plate, and a hydraulic pump is fixedly connected to the top of the oil tank.

[0021] The above technical solution involves using a hydraulic pump to extract hydraulic oil from the tank, which is then transported through pipelines to the hydraulic cylinder.

[0022] As a further description of the above technical solution:

[0023] The water-blocking component includes a stepper motor, the bottom of which is fixedly connected to the top rear side of the base. A gear is fixedly connected to the output end of the stepper motor. A water-blocking plate is slidably connected to the inner wall of the positioning hole. An airbag is fixedly connected to the bottom end of the water-blocking plate. A rack is fixedly connected to the top rear side of the water-blocking plate.

[0024] The above technical solution involves starting a stepper motor to rotate a gear, which in turn moves the water-blocking plate up and down under the meshing connection of the gear and rack. This allows the airbag to limit the wastewater in the positioning hole, facilitating subsequent recycling.

[0025] As a further description of the above technical solution:

[0026] The left and right ends of the rear side of the fixed plate are fixedly connected to sliding columns, and the front side of the mounting plate has two sliding grooves.

[0027] The above technical solution guides the movement of the fixed plate by having the sliding column slide within the groove.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the device is quickly and accurately fixed by the electromagnetic chuck and the positioning hole. Then, the piston rod is moved up and down in the mounting groove by the hydraulic cylinder, which in turn allows the fixing plate to move up and down. During the movement, the guide rod structure ensures that the drill bit can work vertically and stably, preventing the drill from getting stuck and the hole position from shifting during the drilling process. This improves drilling efficiency and quality. The device has a simple structure, reduces construction difficulty and cost, and reduces construction risks caused by complex equipment and cumbersome operation.

[0030] 2. In this utility model, the stepper motor is started to block the wastewater in the positioning hole by the water-blocking plate, and the wastewater is prevented from flowing out with the assistance of the air bag. Then, the high-pressure pump is started to generate a strong negative pressure, and the wastewater is recycled through the recovery pipe and the water suction horn. It is then filtered through the filter screen in the filter tank, which can realize the recycling of water and reduce resource consumption. The centralized treatment of impurities reduces pollution and ensures the environmental protection and resource conservation of the construction. Attached Figure Description

[0031] Figure 1 This is a perspective view of a wire-pulling device for replacing old hangers of a concrete arch bridge according to the present invention.

[0032] Figure 2 This is a front view of a wire-pulling device for replacing old hangers of a concrete arch bridge, as proposed in this utility model.

[0033] Figure 3 This is a sectional view of the mounting plate of a wire-pulling device for replacing old hangers of a concrete arch bridge, as proposed in this utility model.

[0034] Figure 4 This is a schematic diagram of the water tank for a wire-pulling device for replacing old hangers in a concrete arch bridge, as proposed in this utility model.

[0035] Figure 5 This is a cross-sectional view of the filter box of a wire-pulling device for replacing old hangers of a concrete arch bridge, as proposed in this utility model.

[0036] Legend:

[0037] 1. Mounting plate; 2. Base; 3. Positioning mechanism; 301. Electromagnetic chuck; 302. Hydraulic cylinder; 303. Piston rod; 304. Mounting slot; 305. Fixing plate; 306. Servo motor; 307. Drill bit; 308. Reinforcing component; 3081. Guide rod; 3082. Limit block; 3083. Guide hole; 309. Pressurizing component; 3091. Oil tank; 3092. Hydraulic pump; 310. Slide groove; 311. Sliding column; 4. Positioning hole; 5. Recycling mechanism; 501. 502. High-pressure pump; 503. Filter tank; 504. Filter screen; 505. Recovery pipe; 506. Water suction nozzle; 507. Fixing block; 508. Water blocking assembly; 509. Stepper motor; 50072. Gear; 50073. Water blocking plate; 50074. Airbag; 50075. Rack; 6. Water delivery mechanism; 601. Water tank; 602. Water pump; 603. Water delivery pipe; 604. Rotary nozzle; 7. Steering mechanism; 701. Universal joint one; 702. Electric push rod; 703. Universal joint two. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Reference Figure 2 , Figure 3 and Figure 4This utility model provides an embodiment of a wire-pulling device for replacing old hangers of concrete arch bridges, comprising a mounting plate 1, a base 2 fixedly connected to the bottom of the mounting plate 1, a positioning mechanism 3 provided on the front side of the mounting plate 1, the positioning mechanism 3 being used for drilling and positioning the drilling position, a positioning hole 4 being provided in the middle of the base 2, the positioning hole 4 being used to indicate the drilling position, a recycling mechanism 5 being provided on the top right side of the base 2, the recycling mechanism 5 being used for recycling wastewater, a water conveying mechanism 6 being provided on the top left side of the base 2, the water conveying mechanism 6 being used for cleaning dust and reducing the temperature of the drill bit 307, and a steering mechanism 7 being provided on the front side of the mounting plate 1; the positioning mechanism 3 includes... Multiple electromagnetic chucks 301 are used to fix the position of the device. The tops of the electromagnetic chucks 301 are all fixedly connected to the bottom of the base 2. The top of the mounting plate 1 has a mounting groove 304, which provides guidance and space for the movement of the piston rod 303. A hydraulic cylinder 302 is fixedly connected to the top of the mounting plate 1, which moves the fixing plate 305 up and down. The bottom of the hydraulic cylinder 302 is slidably connected to the piston rod 303, which transmits the power generated by the hydraulic cylinder 302. The bottom end of the piston rod 303 is fixedly connected to the fixing plate 305, which provides a mounting plate for the servo motor 306. The mounting plate 305 has a servo motor 306 fixedly connected to its bottom. The servo motor 306 provides power to the drill bit 307, and the output end of the servo motor 306 is fixedly connected to the drill bit 307. The drill bit 307 drills holes in the ground. A reinforcing component 308 is provided on the top of the base 2. The reinforcing component 308 is used to reinforce the position of the drill bit 307 during operation to prevent lateral slippage. A pressure component 309 is provided on the front side of the mounting plate 1. The pressure component 309 provides power to the hydraulic cylinder 302. The reinforcing component 308 includes two guide rods 3081. The bottom ends of the two guide rods 3081 are fixedly connected to the left and right sides of the top of the base 2. The top of the plate 305 has two guide holes 3083. The guide rod 3081 slides on the inner wall of the guide hole 3083 to guide and reinforce the movement of the fixed plate 305 and prevent tilting. The top of each guide rod 3081 is fixedly connected to a limit block 3082. The limit block 3082 is used to limit the upper limit of the position of the fixed plate 305. The pressurizing component 309 includes an oil tank 3091 for storing lubricating oil. The rear side of the oil tank 3091 is fixedly connected to the front right end of the mounting plate 1. The top of the oil tank 3091 is fixedly connected to a hydraulic pump 3092, which draws hydraulic oil and delivers it to the hydraulic cylinder 302.

[0040] Specifically, the device is moved above the concrete arch rib where the hanger to be replaced. It is aligned with the drilling position through the positioning hole 4 in the middle of the base 2. The electromagnetic chuck 301 is activated, using magnetic force to adhere and fix the device to the surface of the arch rib, ensuring stable fixation without slippage. The hydraulic pump 3092 is activated to extract lubricating oil from the oil tank 3091, providing power to the hydraulic cylinder 302. This causes the hydraulic cylinder 302 to drive the piston rod 303 downwards, moving the fixing plate 305 vertically along the guide rod 3081, aligning the drill bit 307 with the positioning hole. 4. Start the servo motor 306 to drive the drill bit 307 to rotate. At the same time, the hydraulic cylinder 302 controls the drill bit 307 to drill at a constant speed. Meanwhile, the guide rod 3081 is inserted into the guide hole 3083 at the top of the fixed plate 305 to help prevent the fixed plate 305 from shifting and ensure that the drilling is vertical. After drilling is completed, the piston rod 303 drives the drill bit 307 to reset. After drilling is completed, the drill bit 307 can also be replaced with a wire pulling clamp to clamp the old boom wire. The hydraulic cylinder 302 provides an upward force to pull out the old boom at a constant speed.

[0041] Reference Figure 1 , Figure 3 and Figure 5 The recycling mechanism 5 includes a filter tank 502 for filtering wastewater. The bottom of the filter tank 502 is fixedly connected to the top right side of the base 2. A high-pressure pump 501 is fixedly connected to the top of the filter tank 502, and the high-pressure pump 501 provides suction to draw the wastewater. A filter screen 503 is fixedly connected to the middle of the inner wall of the filter tank 502 for filtering the wastewater. A recycling pipe 504 is connected to the top of the front end of the filter tank 502, allowing wastewater to be drawn in and fall from the top of the filter tank 502. A suction nozzle 505 is fixedly connected to the bottom of the recycling pipe 504 to increase the suction range and speed. A fixing block 506 is fixedly connected to the outer wall of the recycling pipe 504. The fixing block 506 is used to fix the recycling pipe 504 to the inner wall of the water blocking plate 5073. The top of the base 2 is provided with a water blocking component 507, which is used to prevent wastewater from flowing to the outside. The water blocking component 507 includes a stepper motor 5071, which provides power for the up and down movement of the water blocking plate 5073. The bottom of the stepper motor 5071 is fixedly connected to the rear side of the top of the base 2. The output end of the stepper motor 5071 is fixedly connected to a gear 5072. The water blocking plate 5073 is slidably connected to the inner wall of the positioning hole 4. The water blocking plate 5073 is used to block wastewater. The bottom end of the water blocking plate 5073 is fixedly connected to an airbag 5074, which can prevent wastewater from flowing out from the gap. The rear side of the top of the water blocking plate 5073 is fixedly connected to a rack 5075. The meshing connection of the gear 5072 and the rack 5075 is used to transmit power.

[0042] Specifically, before drilling, the stepper motor 5071 is started, and the gear 5072 and rack 5075 mesh to drive the water-blocking plate 5073 to rise along the inner wall of the positioning hole 4. The airbag 5074 at the bottom expands under pressure, tightly adhering to the concrete surface to form a ring-shaped closed space, preventing wastewater from overflowing from the inner wall of the positioning hole 4. During drilling, the high-pressure pump 501 is turned on, and the suction generated by the high-pressure pump 501 passes through the recovery pipe 504 and is quickly drawn out through the suction nozzle 505. Wastewater from the enclosed area flows in from the top of the filter tank 502, where it passes through the filter screen 503 in the middle to intercept impurities. The purified wastewater is stored at the bottom of the tank. The fixing block 506 fixes the recovery pipe 504 to the inner wall of the water blocking plate 5073 to ensure the precise position of the water inlet. After drilling is completed, the stepper motor 5071 reverses to reset the water blocking plate 5073. The filtered wastewater can be recycled after treatment, and the impurities trapped by the filter screen 503 are cleaned regularly to ensure the continuous operation of the recovery mechanism 5.

[0043] Reference Figure 1 , Figure 2 and Figure 3 The water supply mechanism 6 includes a water tank 601 for storing clean water. The bottom of the water tank 601 is fixedly connected to the top left side of the base 2. A water pump 602 is fixedly connected to the top of the water tank 601. The water pump 602 draws and pressurizes clean water. A water supply pipe 603 is connected to the top of the water pump 602. The water supply pipe 603 guides the flow of pressurized clean water. Two rotating nozzles 604 are fixedly connected to the front end of the water supply pipe 603. The two rotating nozzles 604 spray high-pressure water. The steering mechanism 7 includes multiple universal joints 701. The top ends of the multiple universal joints 701 are fixedly connected to the bottom of the fixed plate 305. The bottom of the multiple universal joints 701... Each end of the mounting plate 305 is fixedly connected to an electric push rod 702. The extension and retraction of the electric push rod 702 changes the orientation of the two rotating nozzles 604. The bottom ends of the multiple electric push rods 702 are fixedly connected to universal joints 703. The multiple universal joints 701 and 703 make turning more convenient. The multiple universal joints 703 are connected to the top of the outer wall of the two rotating nozzles 604. The left and right ends of the rear side of the mounting plate 305 are fixedly connected to sliding columns 311. The front side of the mounting plate 1 has two sliding grooves 310. The sliding columns 311 slide in the sliding grooves 310 to guide the position of the mounting plate 305 again and make the power transmission clearer.

[0044] Specifically, when the device is running, the water pump 602 is turned on and clean water is drawn from the water tank 601 and pressurized. The pressurized water is delivered to the two rotating nozzles 604 at the front end through the water pipe 603. At the same time, when the drill bit 307 is moving continuously, the rotating nozzles 604 are driven to deflect in all directions by the extension and retraction of the electric push rod 702 and the hinge action of universal joint 1 701 and universal joint 2 703, ensuring that the high-pressure water can cover the drilling area in real time. The rotating nozzles 604 are equipped with a turbine mechanism, which forms a water curtain when the high-pressure water flows through, washing away concrete debris and dust in the drilling hole and cooling the drill bit 307 at the same time. The sliding column 311 slides in the sliding groove 310, which can assist the vertical movement of the fixed plate 305.

[0045] Working principle: Move the equipment to the working position, align it with the drilling point through the positioning hole 4 in the middle of the base 2 to provide position information for drilling, activate the electromagnetic chuck 301, and use magnetic force to connect with the internal steel bars of the concrete, firmly adhering the device to the surface of the arch rib to prevent the equipment from sliding or shifting. Activate the hydraulic pump 3092 and draw hydraulic oil from the oil tank 3091 to provide power to the hydraulic cylinder 302. The hydraulic cylinder 302 drives the piston rod 303 to descend, causing the fixed plate 305 to move vertically along the guide rod 3081, so that the drill bit 307 is accurately aligned with the positioning hole 4, and the drilling is started. Servo motor 306 drives drill bit 307 to rotate, while hydraulic cylinder 302 controls piston rod 303 to continue moving downward to achieve drilling. Guide rod 3081 is inserted into guide hole 3083 at the top of fixed plate 305, which restricts the lateral displacement of fixed plate 305 and ensures the verticality of drilling. After drilling is completed, drill bit 307 can be replaced with wire pulling clamp. The clamp clamps the old lifting rod wire, and the hydraulic cylinder 302 provides an upward force to pull out the old lifting rod at a stable rate. At the same time, guide rod 3081 prevents the clamp and lifting rod from being damaged due to misalignment.

[0046] Furthermore, after the stepper motor 5071 starts, the meshing connection between the gear 5072 and the rack 5075 causes the water-blocking plate 5073 to move downwards along the inner wall of the positioning hole 4. The air bladder 5074 at the bottom of the water-blocking plate 5073 is compressed as the plate moves downwards, and after expanding, it tightly adheres to the concrete surface, filling the gap between the ground and the equipment, forming an annular sealing strip to prevent wastewater from flowing to the surrounding area. Simultaneously, the high-pressure pump 501 starts, creating negative pressure in the recovery pipe 504, expanding the suction range through the suction nozzle 505, and quickly drawing wastewater from the enclosed area. The wastewater flows through the recovery pipe 504 and into the filter tank 502. The wastewater flows in from the top of the filter tank 502 and passes through the filter screen 503 from top to bottom by gravity. Impurities are trapped in the screen, and the filtered wastewater is stored at the bottom of the tank. The fixing block 506 connects the recovery pipe 504 to the inner wall of the water blocking plate 5073, ensuring that the water suction nozzle 505 is always aligned with the water collection area. After drilling is completed, the stepper motor 5071 reverses to reset the water blocking plate 5073 upwards, which facilitates the movement of the equipment. The filtered wastewater is then treated again to achieve water resource reuse and reduce the consumption of fresh water.

[0047] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wire-pulling device for replacing old hangers of concrete arch bridges, comprising an installation plate (1), characterized in that: The bottom of the mounting plate (1) is fixedly connected to a base (2), a positioning mechanism (3) is provided on the front side of the mounting plate (1), a positioning hole (4) is provided in the middle of the base (2), a recycling mechanism (5) is provided on the top right side of the base (2), a water conveying mechanism (6) is provided on the top left side of the base (2), and a steering mechanism (7) is provided on the front side of the mounting plate (1). The positioning mechanism (3) includes multiple electromagnetic chucks (301), the tops of which are fixedly connected to the bottom of the base (2). The top of the mounting plate (1) is provided with a mounting groove (304). The top of the mounting plate (1) is fixedly connected with a hydraulic cylinder (302). The bottom of the hydraulic cylinder (302) is slidably connected with a piston rod (303). The bottom end of the piston rod (303) is fixedly connected with a fixing plate (305). The bottom of the fixing plate (305) is fixedly connected with a servo motor (306). The output end of the servo motor (306) is fixedly connected with a drill bit (307). The top of the base (2) is provided with a reinforcing component (308). The front side of the mounting plate (1) is provided with a pressure component (309).

2. The old hanger wire pulling device for replacing concrete arch bridge hangers according to claim 1, characterized in that: The recycling mechanism (5) includes a filter tank (502), the bottom of which is fixedly connected to the top right side of the base (2), a high-pressure pump (501) is fixedly connected to the top of the filter tank (502), a filter screen (503) is fixedly connected to the middle of the inner wall of the filter tank (502), a recycling pipe (504) is connected to the top of the front end of the filter tank (502), a water suction horn (505) is fixedly connected to the bottom of the recycling pipe (504), a fixing block (506) is fixedly connected to the outer wall of the recycling pipe (504), and a water blocking component (507) is provided on the top of the base (2).

3. The old hanger wire pulling device for replacing concrete arch bridge hangers according to claim 1, characterized in that: The water conveying mechanism (6) includes a water tank (601), the bottom of which is fixedly connected to the top left side of the base (2), a water pump (602) is fixedly connected to the top of the water tank (601), a water conveying pipe (603) is connected to the top of the water pump (602), and two rotating nozzles (604) are fixedly connected to the front end of the water conveying pipe (603).

4. The old hanger wire pulling device for replacing concrete arch bridge hangers according to claim 3, characterized in that: The steering mechanism (7) includes multiple universal joints (701), the top ends of which are fixedly connected to the bottom of the fixed plate (305), the bottom ends of which are fixedly connected to electric push rods (702), the bottom ends of which are fixedly connected to universal joints (703), and the top ends of which are connected to the outer walls of the two rotating nozzles (604).

5. The old hanger wire pulling device for replacing concrete arch bridge hangers according to claim 1, characterized in that: The reinforcement component (308) includes two guide rods (3081), the bottom ends of which are fixedly connected to the top left and right sides of the base (2). The top of the fixing plate (305) has two guide holes (3083), and the top ends of the two guide rods (3081) are fixedly connected to limit blocks (3082).

6. The old hanger wire pulling device for replacing concrete arch bridge hangers according to claim 1, characterized in that: The pressurization assembly (309) includes an oil tank (3091), the rear side of which is fixedly connected to the front right end of the mounting plate (1), and a hydraulic pump (3092) is fixedly connected to the top of the oil tank (3091).

7. The old hanger wire pulling device for replacing concrete arch bridge hangers according to claim 2, characterized in that: The water-blocking assembly (507) includes a stepper motor (5071), the bottom of which is fixedly connected to the top rear side of the base (2). A gear (5072) is fixedly connected to the output end of the stepper motor (5071). A water-blocking plate (5073) is slidably connected to the inner wall of the positioning hole (4). An airbag (5074) is fixedly connected to the bottom end of the water-blocking plate (5073). A rack (5075) is fixedly connected to the top rear side of the water-blocking plate (5073).

8. The old hanger wire pulling device for replacing concrete arch bridge hangers according to claim 1, characterized in that: The left and right ends of the rear side of the fixed plate (305) are fixedly connected with sliding columns (311), and the front side of the mounting plate (1) has two sliding grooves (310).

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