Railway bridge expansion joint cleaning device

Abstract

The utility model discloses railway bridge expansion joint cleaning device, including trolley and motor, the middle part of trolley is installed with the mounting seat that can go up and down, and the motor is installed in the top of the supporting plate, and the loading box, supporting plate are located above the trolley ground plate, and the bottom plate is located below the trolley ground plate, and spring a is sleeved on every stand, and the upper end of spring a supports the bottom of supporting plate, and the upside of bottom plate is installed with the horizontal pivot through the bearing seat, and one end of pivot projects to the side of trolley and is installed with the cleaning disc subassembly, and the other end of pivot is connected transmission through the pulley subassembly between the output shaft of motor, and the cleaning disc subassembly includes spline shaft and two discs, and two discs are installed with spline shaft and can adjust the interval, and two discs are connected with several even distribution steel wire ropes between the edge. Utilize the rotation of cleaning disc subassembly to clean the sundries in expansion joint, and the width of cleaning disc subassembly can adjust and adapt to the expansion joint of different width, and the compatibility is good.

Description

Technical Field

[0001] This utility model relates to the field of bridge maintenance technology, specifically a cleaning device for railway bridge expansion joints. Background Technology

[0002] The standard design for expansion joints in Chinese railway bridges ranges from 30 to 200 mm. Over time, soil, stones, and other debris can easily accumulate in these joints, affecting their smooth operation. Currently, cleaning these joints primarily involves tools such as shovels, rebar hooks, and high-pressure water guns. The debris in these joints mainly consists of heavy gravel that has rolled off the ballast, making existing cleaning methods ineffective and inefficient. A search revealed a Chinese utility model patent (CN211036835U) that discloses a bridge expansion joint cleaning device. This device, comprising a ring block, support plate, rotating wheel, first gear, second gear, and a vacuum cleaner, allows the cleaning wheel to rotate while the rotating wheel is being driven. Simultaneously, the base and housing rotate during use, facilitating back-and-forth cleaning of the expansion joint without requiring realignment of the cleaning wheel with the joint, thus improving cleaning efficiency. However, this solution also has drawbacks: the design width of the expansion joint varies, and the fixed-thickness cleaning wheel is ill-suited to different joints, limiting its applicability. Utility Model Content

[0003] The purpose of this invention is to provide a cleaning device for expansion joints of railway bridges to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a railway bridge expansion joint cleaning device, including a handcart and a motor. The handcart has a vertically adjustable mounting base installed in the middle. The mounting base includes a rectangular carrier box and a base plate. The carrier box is used to place heavy objects to apply downward pressure. Vertical columns are connected between the four corners of the bottom of the carrier box and the base plate. The columns penetrate the chassis of the handcart and are slidably connected to it. A support plate is fixedly connected between the four columns. The motor is installed above the support plate.

[0005] The carrier box and tray are located above the handcart chassis, and the base plate is located below the handcart chassis. Each column is fitted with a spring a, the upper end of which supports the bottom of the tray. A horizontal rotating shaft is installed on the upper side of the base plate through a bearing seat. One end of the rotating shaft extends to the side of the handcart and is equipped with a sweeping disc assembly. The other end of the rotating shaft is connected to the output shaft of the motor through a pulley assembly. The sweeping disc assembly includes a splined shaft and two discs. The two discs are fitted and installed with the splined shaft and the spacing can be adjusted. Several evenly distributed steel wire ropes are connected between the edges of the two discs.

[0006] Preferably, a battery is installed on the upper side of the handcart, a handle is installed on the upper rear side of the handcart, a power switch is installed at the rear end of the handle, and the battery is electrically connected to the motor through the power switch.

[0007] Preferably, an axial spring b is connected between the two discs at the middle. The spring b is sleeved on a spline shaft. The outer end of the spline shaft is a cylindrical section with an external thread opposite to the direction of rotation. A fastening nut is screwed onto the external thread, and the inner end face of the fastening nut abuts against the outer disc.

[0008] Preferably, the wire rope is in a flexible U-shape after installation and has bristles distributed on its outer side.

[0009] Compared with the prior art, the advantages of this utility model are: This utility model features a liftable sweeping disc assembly, which utilizes the rotation of the sweeping disc assembly to clean debris within the expansion joint, thus improving cleaning efficiency. The width of the sweeping disc assembly is adjustable to accommodate expansion joints of different widths, exhibiting good compatibility and adaptability. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0011] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure at point AA;

[0012] Figure 3 This is a three-dimensional structural diagram of the cleaning disc assembly.

[0013] In the diagram: 1. Handcart; 2. Handle; 3. Mounting base; 31. Carrier box; 32. Pallet; 33. Base plate; 4. Spring a; 5. Motor; 6. Battery; 7. Sweeping disc assembly; 71. Splined shaft; 72. Disc; 73. Wire rope; 74. Fastening nut; 75. Spring b; 8. Shaft. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Please see Figure 1-3This utility model provides a technical solution: a railway bridge expansion joint cleaning device, including a handcart 1 and a motor 5. A battery 6 is installed on the upper side of the handcart 1, and a handle 2 is installed on the upper rear side of the handcart 1. A power switch is installed at the rear end of the handle 2. The battery 6 is electrically connected to the motor 5 through the power switch. The front side of the handcart 1 is provided with a large traveling wheel, and the middle of the rear of the handcart 1 is provided with a small traveling wheel. A vertically adjustable mounting base 3 is installed in the middle of the handcart 1. The mounting base 3 includes a rectangular carrier box 31 and a base plate 33. The carrier box 31 is used to place heavy objects to apply downward pressure. Vertical columns are connected between the four corners of the bottom of the carrier box 31 and the base plate 33. The columns penetrate the chassis of the handcart 1 and are slidably connected to it. A support plate 32 is fixedly connected between the four columns, and the motor 5 is installed above the support plate 32.

[0016] The carrier box 31 and tray 32 are located above the chassis of the handcart 1, and the base plate 33 is located below the chassis of the handcart 1. Each column is fitted with a spring a4, the upper end of which supports the bottom of the tray 32. When objects of different weights are placed in the carrier box 31, the spring a4 is compressed to different degrees. A horizontal rotating shaft 8 is mounted on the upper side of the base plate 33 via a bearing seat. One end of the rotating shaft 8 extends to the side of the handcart 1 and is fitted with a cleaning disc assembly 7. The other end of the rotating shaft 8 is connected to the output shaft of the motor 5 via a pulley assembly for transmission.

[0017] The cleaning disc assembly 7 includes a splined shaft 71 and two discs 72. The two discs 72 are fitted and installed with the splined shaft 71 and their spacing is adjustable. Several evenly distributed steel wire ropes 73 are connected between the edges of the two discs 72. The steel wire ropes 73 are flexible and have high strength. After installation, the steel wire ropes 73 are in a flexible U-shape and have bristles distributed on their outer sides (the bristles are not shown in the attached drawings; the bristles can be steel wires extending from the steel wire ropes 73 or separately installed cylindrical brushes). Two discs 72 are connected by an axial spring b75 in the middle. The spring b75 is sleeved on a spline shaft 71. The outer end of the spline shaft 71 is a cylindrical section with an external thread opposite to the direction of rotation. A fastening nut 74 is screwed onto the external thread. The inner end face of the fastening nut 74 abuts against the outer disc 72. When the fastening nut 74 is screwed inward, it can push the outer disc 72 to move inward (the inner disc 72 is constrained uniaxially), shortening the distance between the two discs 72.

[0018] Working principle: During use, the sweeping disc assembly 7 is inserted into the expansion joint of the bridge. Objects of different weights are placed in the carrier box 31 to adjust the descent height of the sweeping disc assembly 7. After the motor 5 is started, it drives the sweeping disc assembly 7 to rotate, while simultaneously pushing the handcart 1 from one end of the expansion joint to the other. The steel wire rope 73 centrifugally throws out debris from the expansion joint, achieving cleaning. The axial position of the outer disc 72 can be adjusted by turning the fastening nut 74, thereby adjusting the distance between the two discs 72 and the width to accommodate expansion joints of different widths.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A railway bridge expansion joint cleaning device, comprising a handcart (1) and a motor (5), wherein a vertically adjustable mounting base (3) is installed in the middle of the handcart (1), the mounting base (3) comprising a rectangular carrier box (31) and a base plate (33), the carrier box (31) being used to place heavy objects to apply downward pressure, and vertical columns being connected between the four corners of the bottom of the carrier box (31) and the base plate (33), the columns penetrating the chassis of the handcart (1) and slidingly connected thereto, a support plate (32) being fixedly connected between the four columns, and the motor (5) being installed above the support plate (32), characterized in that: The carrier box (31) and tray (32) are located above the chassis of the handcart (1), and the base plate (33) is located below the chassis of the handcart (1). Each column is fitted with a spring a (4), and the upper end of the spring a (4) supports the bottom of the tray (32). A horizontal rotating shaft (8) is installed on the upper side of the base plate (33) through a bearing seat. One end of the rotating shaft (8) extends to the side of the handcart (1) and is equipped with a sweeping disc assembly (7). The other end of the rotating shaft (8) is connected to the output shaft of the motor (5) through a pulley assembly for transmission. The sweeping disc assembly (7) includes a spline shaft (71) and two discs (72). The two discs (72) are adapted to the spline shaft (71) and can be adjusted in distance. Several evenly distributed steel wire ropes (73) are connected between the edges of the two discs (72).

2. The railway bridge expansion joint cleaning device according to claim 1, characterized in that: A battery (6) is installed on the upper side of the handcart (1), and a handle (2) is installed on the upper rear side of the handcart (1). A power switch is installed at the rear end of the handle (2), and the battery (6) is electrically connected to the motor (5) through the power switch.

3. The railway bridge expansion joint cleaning device according to claim 2, characterized in that: An axial spring b (75) is connected between the two discs (72) at the middle. The spring b (75) is sleeved on a spline shaft (71). The outer end of the spline shaft (71) is a cylindrical section with an external thread opposite to the direction of rotation. A fastening nut (74) is screwed into the external thread. The inner end face of the fastening nut (74) abuts against the outer disc (72).

4. The railway bridge expansion joint cleaning device according to claim 3, characterized in that: The wire rope (73) is flexible U-shaped after installation and has bristles distributed on the outside.

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