Trolley wire cleaning device

Abstract

To provide a trolley wire cleaning device that allows for cleaning of trolley wires through simple operations using a compact device. [Solution] The trolley wire cleaning device 1 comprises a laser irradiation device 11 that irradiates a laser toward the trolley wire 101, and a moving device 3 that holds the laser irradiation device 11 and is movable along the trolley wire 101. The moving device 3 has a suspension part 6 that is movably suspended from the trolley wire 102. The suspension part 6 has a pair of wheel mechanisms 7a, 7b arranged on both sides in a second direction Y1. The wheel mechanism 7a has a rotating member 8 that is rotatable about an axis E1 extending in a third direction Z1, and a plurality of shafts 9 extending radially outward from the rotating member 8. The plurality of shafts 9 are arranged so that at least one is always resting on the top of the trolley wire 101.

Description

Technical Field

[0004]

[0001] The present invention relates to a trolley wire cleaning device.

Background Art

[0002] A railway vehicle that travels on a track using a motor as a power source is supplied with power from an overhead trolley wire via a pantograph on the roof. The trolley wire is, for example, suspended from a suspension wire by hangers.

[0003] The main component of the trolley wire is copper, and when copper oxidizes, rust (an oxide film formed by the combination of copper, the main component of the trolley wire, and oxygen in the atmosphere) occurs on the surface of the trolley wire. Since this rust is a non-conductor, electrical contact failure may occur between the pantograph and the trolley wire due to the rust. To solve the above problems, the trolley wire is regularly cleaned to maintain a good conduction state of the trolley wire. For example, a trolley wire cleaning device for removing rust generated on the surface of the trolley wire is known (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] The present invention aims to provide a trolley wire cleaning device that can clean trolley wires through simple operations using a compact device. [Means for solving the problem]

[0007] The trolley wire cleaning device according to the present invention is a device for cleaning trolley wires, A laser irradiation device that irradiates a laser toward the trolley wire, The device includes a moving device that holds the laser irradiation device and is movable along the trolley wire, The aforementioned mobile device is A holding part for holding the laser device, It has a suspension part connected to the holding part and movably suspended from the trolley wire, The suspension section has a pair of wheel mechanisms arranged on both sides in a direction intersecting the direction of movement. Each of the pair of wheel mechanisms has a rotating member that can rotate around an axis extending vertically, and a plurality of shafts extending radially outward from the rotating member. Each of the plurality of shafts in the wheel mechanism is positioned such that at least one is always resting on the top of the trolley wire. [Effects of the Invention]

[0008] According to the present invention, a trolley wire cleaning device is available that can clean trolley wires through simple operations using a compact device. [Brief explanation of the drawing]

[0009] [Figure 1] This is a schematic diagram showing the trolley wire cleaning device of the present invention applied to a trolley wire. [Figure 2] This is a schematic perspective view of a trolley wire cleaning device. [Figure 3] This is a schematic plan view of a trolley wire cleaning device. [Figure 4]It is a cross-sectional view of the wheel mechanism of the suspension part of the trolley wire cleaning device. [Figure 5] It is a partial plan view showing the state when the wheel mechanism is attached to and detached from the trolley wire. [Figure 6] It is a partial enlarged view of FIG. 3. [Figure 7] It is a partial perspective view showing the guided part of the trolley wire cleaning device. [Figure 8A] It is a partial plan view showing the first state in the operation where the wheel mechanism moves while avoiding the hanger. [Figure 8B] It is a partial plan view showing the second state in the operation where the wheel mechanism moves while avoiding the hanger. [Figure 8C] It is a partial plan view showing the third state in the operation where the wheel mechanism moves while avoiding the hanger. [Figure 9] It is a plan view showing the positional relationship of a pair of wheel mechanisms in a modified example. [Figure 10] It is a plan view showing the operation where a pair of wheel mechanisms interfere in a modified example.

Embodiments for Carrying Out the Invention

[0010] (Schematic Explanation of Trolley Wire Cleaning Device and Trolley Wire) Using FIGS. 1 to 3, the schematic configuration of the trolley wire cleaning device 【1】 and the trolley wire

[101] according to the present invention will be described. FIG. 1 is a schematic view showing a state where the trolley wire cleaning device 【1】 according to an embodiment of the present invention is applied to the trolley wire

[101] . FIG. 2 is a schematic perspective view of the trolley wire cleaning device 【1】. FIG. 3 is a schematic plan view of the trolley wire cleaning device 【1】. <000​​​​​As shown in Fig. 1, the trolley wire 101 is suspended via hangers 103 from a suspension wire 102 made of, for example, a wire stretched upward. The hangers 103 are provided at a predetermined pitch in the extending direction of the suspension wire 102. As shown in Fig. 2, the hanger 103 has a suspension wire 103A and a mounting portion 103B provided at the lower end of the suspension wire 103A and attached to the trolley wire 101.

[0013] The trolley wire 101 supplies power to, for example, a tram (not shown). The tram is driven by the power supplied from the trolley wire 101 connected to a power source (not shown) via a pantograph (not shown) that contacts the trolley wire 101 and moves along the trolley wire 101. The trolley wire 101 is a long conductor formed of, for example, copper and is installed along the moving direction of the tram. As described above, rust that impedes conduction between the trolley wire 101 and the pantograph may be generated on the surface of the trolley wire 101 over time.

[0014] (Basic Configuration of Trolley Wire Cleaning Device)

[0015] The trolley wire cleaning device relies mainly on a laser device 2 that irradiates a laser toward the trolley wire 101, and a moving device 3 that holds a laser gun 11 (laser irradiation device) of the laser device 2 and is movable along the trolley wire 101. The trolley wire cleaning device 1 is manually guided and operated from the ground. Specifically, as shown in Fig. 1, an operator A1 on the ground uses a rope 104 to move the trolley wire cleaning device 1 along the trolley wire 101. Therefore, safety is improved compared to the conventional example in which an operator polishes the trolley wire using a disk grinder.

[0016] In the following description, the direction of the trolley wire cleaning device 1 will be defined as follows: the horizontal direction of movement along the trolley wire 101 will be the first direction X1 (direction of movement), the horizontal direction perpendicular to the first direction X1 will be the second direction Y1, and the vertical direction will be the third direction Z1. In the following description, the trolley wire cleaning device 1 will be assumed to be attached to the trolley wire 101.

[0017] The laser device 2, also called a laser cleaner (laser cleaning) or laser blaster, mainly comprises a laser gun 11, a controller 12, and a laser oscillator 13, as shown in Figure 1. The controller 12 drives the laser oscillator 13, causing the laser gun 11 to emit a laser L1 (Figure 2). The laser gun 11 is positioned diagonally upward below the trolley wire 101. The laser device 2 utilizes the difference between the laser energy absorption rate of the object to be stripped and the laser energy absorption rate of the base material. In other words, if the laser energy absorption rate of the object to be stripped is high and the laser energy absorption rate of the base material is low, the object to be stripped absorbs the laser energy and vaporizes, but the laser energy is not absorbed by the base material. Also, the laser spot (focused beam) is a point of several tens of microns and moves at a very high speed, so the thermal effect on the base material is very small. In this embodiment, the laser L1 is irradiated onto the underside of the trolley wire 101 and its surroundings. In this embodiment, the controller 12 and the laser oscillator 13 are placed on the ground.

[0018] In this embodiment, a laser device 2 is used to clean the trolley wire 101, resulting in improved work efficiency compared to conventional methods. Furthermore, it generates less dust and noise compared to conventional methods.

[0019] The mobile device 3 includes a holding part 5 for holding the laser gun 11 of the laser device 2, and a suspension part 6 connected to the holding part 5 and movably suspended from the trolley wire 101.

[0020] The holding unit 5 comprises a housing 5A for housing the laser gun 11 and a pair of support parts 5B provided on the upper parts of both sides of the housing 5A in the first direction X1.

[0021] The suspension section 6 has a plurality of (four in this embodiment) wheel mechanisms 7. The wheel mechanisms 7 are mechanisms that rest on the trolley wire 101 and apply the load of the trolley wire cleaning device 1 to the trolley wire 101. The wheel mechanisms 7 are movable along the trolley wire 101 by rotating around an axis E1 (Figure 4) that extends in the third direction Z1.

[0022] Specifically, a pair of wheel mechanisms 7a and 7b are provided on one side of the holding portion 5 in the first direction X1 (the left side in Figures 2 and 3), and a pair of wheel mechanisms 7c and 7d are located on the opposite side of the holding portion 5 in the first direction X1 (the right side in Figures 2 and 3). More specifically, the pair of wheel mechanisms 7a and 7b are mounted on the support portion 5B on one side in the first direction X1, and the pair of wheel mechanisms 7c and 7d are mounted on the support portion 5B on the opposite side in the first direction X1.

[0023] A pair of wheel mechanisms 7a and 7b are positioned on both sides of the trolley wire 101 in the second direction Y1. Specifically, the shafts E1 of the pair of wheel mechanisms 7a and 7b are positioned on both sides of the trolley wire 101 in the second direction Y1. The pair of wheel mechanisms 7a and 7b are mounted on a support 5B on one side in the first direction X1. Furthermore, the pair of wheel mechanisms 7a and 7b are positioned at separate locations in the first direction X1. As a result, the pair of wheel mechanisms 7a and 7b are close to each other but do not interfere with each other during rotation. "The pair of wheel mechanisms 7a and 7b do not interfere with each other during rotation" means that the shaft 9 of one wheel mechanism 7a (or 7b) cannot come into contact with the shaft 9 of the other wheel mechanism 7b (or 7a).

[0024] The pair of wheel mechanisms 7c and 7d are positioned on both sides of the trolley wire 101 in the second direction Y1. Specifically, the shafts E1 of the pair of wheel mechanisms 7c and 7d are positioned on both sides of the trolley wire 101 in the second direction Y1. The pair of wheel mechanisms 7c and 7d are mounted on the support portion 5B on the opposite side of the first direction X1. Furthermore, the pair of wheel mechanisms 7c and 7d are positioned at separate locations in the first direction X1. As a result, the pair of wheel mechanisms 7c and 7d are close to each other but do not interfere with each other during rotational operation. "The pair of wheel mechanisms 7c and 7d do not interfere with each other during rotational operation" means that the shaft 9 of one wheel mechanism 7c (or 7d) cannot come into contact with the shaft 9 of the other wheel mechanism 7d (or 7c).

[0025] As described above, multiple wheel mechanisms 7 are provided, and each wheel mechanism 7 is supported by the trolley wire 101, so stress acts evenly on each wheel mechanism 7. As a result, the posture of the trolley wire cleaning device 1 is stable. Furthermore, wear or damage to the multiple wheel mechanisms 7 is less likely to occur.

[0026] (Detailed explanation of the wheel mechanism) The wheel mechanism 7 will be explained in detail using Figure 4. Figure 4 is a cross-sectional view of the wheel mechanism 7 of the suspension section 6 of the trolley wire cleaning device 1.

[0027] The wheel mechanism 7 rotates around an axis E1 extending in the third direction Z1 while in contact with the trolley wire 101.

[0028] Each wheel mechanism 7 includes a rotating member 8 that can rotate around an axis E1, and a plurality of shafts 9 (four in this embodiment) extending radially outward from the rotating member 8. Specifically, as shown in Figure 4, the rotating member 8 is rotatably supported via a bearing 22 by a fixed shaft 21 that extends upward in a third direction Z1 from the upper surface of the support portion 5B. The shafts 9 have a straight shape in plan view. Note that only the shafts 9 in Figure 4 are provided with a rounded cap 25 at their ends. Note that the cap 25 may be omitted.

[0029] Each of the multiple shafts 9 of the wheel mechanism 7 is positioned such that at least one of the multiple shafts 9 is always resting on the top of the trolley wire 101.

[0030] The multiple shafts 9 of the wheel mechanism 7 are in the same position as the mounting portion 103B of the hanger 103 in the third direction Z1, but they can pass around the hanger 103. Specifically, when the moving device 3 moves along the trolley wire 101, if one of the multiple shafts 9 of the wheel mechanism 7 that is on the trolley wire 101 collides with the hanger 103, the rotating member 8 rotates and moves the one shaft 9 to a position away from the trolley wire 101 (described later).

[0031] The multiple shafts 9 are cylindrical or cylindrical in shape. The multiple shafts 9 are arranged at equal intervals (90-degree intervals in this embodiment) in the rotational direction of one rotating member 8.

[0032] As the trolley wire cleaning device 1 moves along the trolley wire 101, a frictional force acts from the trolley wire 101 on the shaft 9 resting on the trolley wire 101, causing the rotating member 8 to rotate around axis E1. Then, each of the multiple shafts 9 moves in the direction of travel, rotating around axis E1 from their position on the trolley wire 101, and detaches laterally from the trolley wire 101 at the front of the direction of travel.

[0033] As described above, the structure of suspending the trolley wire cleaning device 1 from the trolley wire 101 in a movable manner does not require special power and can also achieve a compact structure.

[0034] Multiple shafts 9 are rotatable around their axis R1 (Figure 4) relative to the rotating member 8. Specifically, as shown in Figure 4, the shafts 9 are rotatably supported via bearings 24 by a fixed shaft 23 extending radially outward from the rotating member 8. This reduces friction between the shafts 9 and the trolley wire 101.

[0035] As shown in Figure 5, at least one of the multiple shafts 9 can switch between a first state in a horizontal position and a second state in which it moves away from the horizontal position, allowing the wheel mechanism 7 to move from below to above the trolley wire 101. Figure 5 is a partial plan view showing the state when the wheel mechanism 7 is attached to and detached from the trolley wire 101. In this embodiment, the second state is the state in which the shaft 9A connected to the rotating member 8 via the hinge mechanism 31 is in a retracted position rotated upward from the horizontal position. When attaching and detaching the multiple wheel mechanisms 7 of the trolley wire cleaning device 1 to and from the trolley wire 101, one shaft 9 in each wheel mechanism 7 is moved to the retracted position, and the shaft 9 in the retracted position is positioned in a rotation position aligned with the trolley wire 101, thereby moving the trolley wire cleaning device 1 in a third direction Z1 relative to the trolley wire 101.

[0036] As shown in Figure 2, the trolley wire cleaning device 1 further includes a laser diffusion suppression member 15. The laser diffusion suppression member 15 is mounted on the holding part 5 and is located above the trolley wire 101. More specifically, it is a brush fixed to the upper part of the holding part 5 and is located above the trolley wire 101. The laser diffusion suppression member 15 prevents the laser light emitted from the laser gun 11 from diffusing further above the trolley wire cleaning device 1. Furthermore, the laser diffusion suppression member 15 deforms when it comes into contact with the hanger 103 to avoid the hanger 103, so it does not hinder the trolley wire cleaning device 1 from moving along the trolley wire 101.

[0037] (Guided section of trolley wire cleaning device) The guided portion 16 of the trolley wire cleaning device 1 will be explained using Figures 6 and 7. Figure 6 is a partially enlarged view of Figure 3. Figure 7 is a partially perspective view showing the guided portion 16 of the trolley wire cleaning device 1.

[0038] The holding unit 5 has a guided unit 16 that is guided to move in a first direction X1 by the trolley wire 101. "Guided" means that the trolley wire cleaning device 1 moves in the first direction X1 without moving significantly in the second direction Y1 relative to the trolley wire 101. The guided unit 16 is a pair of structures located on both sides of the holding unit 5 in the first direction X1. Each guided unit 16 is a pair of wall sections 17 positioned on both sides of the trolley wire 101 in the second direction Y1. The distance between the pair of wall sections 17 in the second direction Y1 is constant and longer than the diameter of the trolley wire 101, so the pair of wall sections 17 and the trolley wire 101 are close to or in contact with each other. As a result, the swaying of the trolley wire cleaning device 1 relative to the trolley wire 101 (in the second direction Y1) is suppressed.

[0039] Furthermore, chamfered portions 18 are provided at both ends of the pair of wall portions 17 in the first direction X1. The chamfered portions 18 are part of the pair of wall portions 17, and are wall portions that gradually widen from a portion with a constant width towards the end. With the above configuration, the holding portion 5 smoothly follows the trolley wire 101 at the point where the trolley wire 101 is bent.

[0040] (operation) (Suspension action) First, the laser gun 11 is attached to the holder 5. Next, the trolley wire cleaning device 1 is suspended from the trolley wire 101. Specifically, the wheel mechanism 7 is straddled over the trolley wire 101. At this time, at least one shaft 9 of each wheel mechanism 7 rests on the upper side of the trolley wire 101.

[0041] (Cleaning operation) Worker A1 manually moves the trolley wire cleaning device 1 along the trolley wire 101. The trolley wire cleaning device 1 moves while straddling the trolley wire 101 and avoiding the hanger 103. During the above movement, the laser L1 from the laser gun 11 is shone onto the trolley wire 101. As a result, contaminants and other debris attached to the trolley wire 101 are removed.

[0042] (The wheel mechanism moves while avoiding the hanger.) Figures 8A to 8C illustrate the operation of the wheel mechanism 7 as it moves while avoiding the hanger 103. Figures 8A to 8C are partial plan views showing each state during the operation of the wheel mechanism as it moves while avoiding the hanger.

[0043] In Figure 8A, one shaft 9B on the trolley wire 101 is colliding with the hanger 103.

[0044] When the trolley wire cleaning device 1 moves from the state shown in Figure 8A to one side (left side in the figure) in the extension direction of the trolley wire 101, the rotating member 8 rotates and the shaft 9B moves away from the hanger 103 (away from the top of the trolley wire 101), as shown in Figure 8B.

[0045] When the trolley wire cleaning device 1 moves from the state shown in Figure 8B to one side (left side in the figure) in the extension direction of the trolley wire 101, the rotating member 8 rotates, causing the shaft 9B to move away from the hanger 103 and completely detach from the trolley wire 101, as shown in Figure 8C.

[0046] As explained above, the shaft 9, located on the rear side in the direction of travel relative to the hanger 103, moves to a position offset from the trolley wire 101 while being rotated by the hanger 103 when it comes into contact with the hanger 103. In other words, a trolley wire cleaning device 1 that can move while avoiding the hanger 103 is realized with a simple configuration.

[0047] (Characteristics of the embodiment) This embodiment has the following features. <1> The trolley wire cleaning device 1 is a trolley wire cleaning device 1 for cleaning the trolley wire 101, A laser gun 11 that irradiates a laser towards the trolley wire 101, The system includes a mobile device 3 that holds the laser gun 11 and is movable along the trolley wire 101. Mobile device 3 is, A holding part 5 for holding the laser gun 11, It has a suspension part 6 that is connected to the holding part 5 and is movably suspended from the trolley wire 101. The suspension section 6 has a pair of wheel mechanisms 7a and 7b arranged on both sides in a direction intersecting the direction of movement. Each of the pair of wheel mechanisms 7a and 7b has a rotating member 8 that can rotate around an axis E1 extending in the vertical direction, and a plurality of shafts 9 that extend radially outward from the rotating member 8. Each of the multiple shafts 9 of the wheel mechanism 7 is positioned such that at least one is always resting on the top of the trolley wire 101.

[0048] <2> <1> In the trolley wire cleaning device 1 described above, the pair of wheel mechanisms 7a and 7b are provided at positions with respect to the holding part 5 that are in different directions of movement.

[0049] <3> <1> or <2> In the trolley wire cleaning device 1 described above, the multiple shafts 9 are cylindrical or cylindrical.

[0050] <4> <1> ~ <3> In the trolley wire cleaning device 1 described in any of the above, multiple shafts 9 are provided at equal intervals in the rotational direction of one rotating member 8.

[0051] <5> <1> or <2> In the trolley wire cleaning device 1 described above, multiple shafts 9 are rotatable around the axis of the shafts 9 relative to the rotating member 8.

[0052] <6> <1> ~ <5> In the trolley wire cleaning device 1 described in any of the above, at least one of the multiple shafts 9 in each of the multiple wheel mechanisms 7 can be switched between a first state in a horizontal position and a second state in which the wheel mechanism 7 is moved away from the horizontal position, thereby enabling it to move between below and above the trolley wire 101.

[0053] <7> <1> ~ <6> In the trolley wire cleaning device described in any of the above, the laser gun 11 is positioned diagonally upward below the trolley wire 101.

[0054] <8> <1> ~ <7> The trolley wire cleaning device 1 described in any of the above further comprises a laser diffusion suppression member 15 that is attached to the holding part 5 and located above the trolley wire 101.

[0055] (Other embodiments and variations) Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications are possible without departing from the spirit of the invention. In particular, the embodiments and modifications described herein can be combined as needed.

[0056] In the above embodiment, the pair of wheel mechanisms 7a and 7b have positions and structures that do not interfere with each other during rotational operation, and furthermore, the pair of wheel mechanisms 7c and 7d have positions and structures that do not interfere with each other during rotational operation. However, as a modification, each pair of wheel mechanisms may have positions and structures that allow them to interfere with each other during rotational operation. In that case, the pair of wheel mechanisms can correct each other's positions by interfering with each other. Specifically, if the rotation of one wheel mechanism stops or slows down, the other wheel mechanism can interfere to promote the rotation of the other wheel mechanism.

[0057] "A pair of wheel mechanisms can interfere with each other during rotational movement" means that the shaft 9 of one wheel mechanism can come into contact with the shaft 9 of the other wheel mechanism. The positions of the pair of wheel mechanisms in the first direction X1 may be the same.

[0058] As an example, as shown in Figure 9, the pair of wheel mechanisms 7a and 7b are closer to each other in the first direction X1 compared to the above embodiment, and can interfere with each other during rotational operation. Figure 9 is a plan view showing the positional relationship of the pair of wheel mechanisms 7a and 7b in a modified example.

[0059] Figure 10 will be used to explain one operation in the above modified example. Figure 10 is a plan view showing the operation in which a pair of wheel mechanisms 7a and 7b interfere with each other in the modified example. In this state, wheel mechanism 7a is unable to rotate around axis E1 or rotates at a slower speed than usual due to resistance from other members. Then, the shaft 9E of wheel mechanism 7b comes into contact with the shaft 9D of wheel mechanism 7a (which is on the trolley wire 101) and continues to rotate (arrow R2). As a result, the shaft 9D of wheel mechanism 7a is pushed and rotates (arrow R3), and as a result, wheel mechanism 7a rotates around axis E1 at approximately the same speed as wheel mechanism 7b. In this way, the interaction between the pair of wheel mechanisms 7a and 7b ensures the smooth operation of both wheel mechanisms.

[0060] The number of wheel mechanisms in a trolley wire cleaning device is not limited. For example, there may be five or more wheel mechanisms.

[0061] The wheel mechanism may consist of only one pair of wheels positioned on either side of the trolley wire. Examples of such variations include the following configuration. 1) A pair of wheel mechanisms consists of a combination of wheel mechanism 7a and wheel mechanism 7c. 2) A combination of wheel mechanisms, such as the combination of wheel mechanism 7b and wheel mechanism 7d, which are separated in the first direction X1 (located on both sides of X1 of the laser gun 11). 3) The pair of wheel mechanisms are positioned close to each other in the first direction X1 and are located directly above the middle or near the middle of the first direction X1 of the holding portion 5.

[0062] The number of shafts extending from each rotating member is not limited to four. There may be five or more shafts. The shape of the shaft is not limited to a cylinder or cylindrical shape. The shaft may also be a polygonal prism. The planar shape of the shaft is not limited to a straight line. The shaft may be bent or curved in plan view.

[0063] Multiple shafts may be arranged at unequal intervals in the direction of rotation of a single rotating member.

[0064] The shaft may be mounted so as not to rotate relative to the rotating member. In that case, the shaft may have a flat or curved surface for contacting the trolley wire.

[0065] Multiple shaft members in a single wheel mechanism may all be rotatable between a horizontal position and a retracted position. Alternatively, multiple shaft members in a single wheel mechanism may all be fixed in a horizontal position and unable to rotate.

[0066] At least one of the multiple shaft members may be rotated horizontally with respect to the rotating member, or removed from the rotating member, in a second state that allows the wheel mechanism to move from below to above the trolley wire.

[0067] The laser diffusion suppression member may be omitted. The laser diffusion suppression member may be a material other than a brush, such as a plate or cloth.

[0068] The controller and laser oscillator may be mounted on a holding unit and moved together with the moving device.

[0069] The trolley wire cleaning device may move along the trolley wire by a drive mechanism having a motor. [Explanation of Symbols]

[0070] 1: Trolley wire cleaning device 2: Laser device 3: Mobile device 5: Holding part 6: Hanging section 7: Wheel mechanism 8: Rotating member 9: Shaft 11: Laser gun (laser irradiation device) 15: Laser diffusion suppression member 16: Guided part 101: Trolley wire 103: Hanger

Claims

1. A trolley wire cleaning device for cleaning trolley wires, A laser irradiation device that irradiates a laser toward the trolley wire, The device includes a moving device that holds the laser irradiation device and is movable along the trolley wire, The aforementioned mobile device is A holding part for holding the laser irradiation device, It has a suspension part connected to the holding part and movably suspended from the trolley wire, The suspension section has a pair of wheel mechanisms arranged on both sides in a direction intersecting the direction of movement. Each of the pair of wheel mechanisms has a rotating member that can rotate around an axis extending vertically, and a plurality of shafts extending radially outward from the rotating member. Each of the plurality of shafts in the wheel mechanism is positioned such that at least one is always resting on the top of the trolley wire. Trolley wire cleaning device.

2. The trolley wire cleaning device according to claim 1, wherein the pair of wheel mechanisms are provided at positions in different directions of movement relative to the holding portion.

3. The trolley wire cleaning device according to claim 1 or 2, wherein the plurality of shafts are cylindrical.

4. The trolley wire cleaning device according to claim 1 or 2, wherein the plurality of shafts are provided at equal intervals in the rotational direction of one of the rotating members.

5. The trolley wire cleaning device according to claim 1 or 2, wherein the plurality of shafts are rotatable with respect to the rotating member, about the axis of the shafts.

6. The trolley wire cleaning device according to claim 1 or 2, wherein in each of the plurality of wheel mechanisms, at least one of the plurality of shafts can be switched between a first state in a horizontal position and a second state in which the wheel mechanism is moved away from the horizontal position, thereby enabling the wheel mechanism to move between the lower and upper sides of the trolley wire.

7. The trolley wire cleaning device according to claim 1 or 2, wherein the laser irradiation device is oriented diagonally upward below the trolley wire.

8. The trolley wire cleaning device according to claim 1 or 2, further comprising a laser diffusion suppression member attached to the holding portion and located above the trolley wire.

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