Ash removal device and crown block system

Abstract

The utility model discloses a deashing device and a crown block system, and relates to the technical field of deashing devices, the deashing device is used for cleaning a crown block power supply slide wire, the deashing device is connected with a crown block, the deashing device comprises a roller and a sweeping assembly, and the roller is installed on the crown block power supply slide wire; the sweeping assembly comprises a connecting piece and a brush, a rotating hole is formed in the roller, the connecting piece is rotationally installed in the rotating hole, the brush is connected with one end of the connecting piece, and the brush makes contact with the two sides and the ridge face of the crown block power supply slide wire. The dust removal device is connected with the crown block, the crown block can drive the dust removal device to move when moving, the rolling wheels roll on the prism face of the crown block power supply slide wire, the rolling wheels can move along the crown block power supply slide wire, and the brush can move along with the rolling wheels, so that dust and impurities on one side of the crown block power supply slide wire are cleaned away. And faults such as poor contact, incapability of sparking, even short circuit and the like between the power supply contact on the crown block and the crown block power supply slide wire are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of dust cleaning devices, and particularly relates to a dust cleaning device and a crane system. Background Art

[0002] In the production process, the transportation of production components is a very important link. Currently, it is a common transportation method to set up a crane in the factory building for transportation.

[0003] Currently, the power supply of the crane usually adopts the three-phase four-wire steel body bare trolley wire power supply method. When the crane is running, the power supply contact of the crane will move on the power supply trolley wire. This method effectively solves the problem of the extremely long power supply line for the crane operation, and at the same time avoids the safety problems of special equipment lines. However, there is a hidden danger of poor contact in the three-phase four-wire steel body bare trolley wire power supply mode. Especially when the trolley wire is exposed to a dust or ash environment for a long time, once excessive dust and ash accumulate on the trolley wire, it will cause serious faults such as poor contact, arcing and even short circuit of the crane, threatening the normal operation and production safety of the crane, and even causing the crane to stop running.

[0004] Currently, once the situation of poor contact occurs during the crane operation, the operators can only use an insulating rod to knock on the power supply trolley wire at the high and edge position, relying on vibration to clean the ash. This operation method has great potential safety hazards and affects the safety of the operators.

[0005] Therefore, it is necessary to provide a new dust cleaning device and a crane system to solve the above technical problems. Summary of the Utility Model

[0006] The main purpose of the utility model is to propose a dust cleaning device and a crane system, aiming to improve the technical problem that the dust cleaning method of the existing power supply trolley wire has great potential safety hazards.

[0007] To achieve the above purpose, the dust cleaning device proposed by the utility model is used for cleaning the power supply trolley wire of the crane. The dust cleaning device is used to be connected with the crane. The dust cleaning device includes:

[0008] A roller, which is used for being rotatably installed on the power supply trolley wire of the crane;

[0009] A cleaning component, which includes a connecting piece and a brush. The roller is formed with a rotating hole. The connecting piece is rotatably installed in the rotating hole. The brush is connected to one end of the connecting piece. The brush is used to contact one side of the power supply trolley wire of the crane.

[0010] In one embodiment, the number of the brushes is three. Two of the brushes are both arranged on the connecting piece, and the two brushes are respectively used for contacting with two sides of the overhead crane power supply sliding wire, and the other brush is wound around the roller for contacting with the top surface of the overhead crane power supply sliding wire.

[0011] In one embodiment, the connecting piece includes a first connecting rod, a second connecting rod and a third connecting rod. Two ends of the first connecting rod are respectively connected with the second connecting rod and the third connecting rod. The first connecting rod is rotatably sleeved in the rotating hole, and the two brushes are respectively rotatably sleeved on the second connecting rod and the third connecting rod.

[0012] In one embodiment, annular baffles are formed on both sides of the roller, and a rolling groove is formed between the two annular baffles. The roller is used for being rotatably installed on the overhead crane power supply sliding wire through the rolling groove, and the two annular baffles can respectively be used for abutting against two sides of the overhead crane power supply sliding wire.

[0013] In one embodiment, the dust cleaning device further includes a first bearing. A first mounting hole is formed at one end of the brush, the first bearing is installed in the first mounting hole, and the connecting piece passes through the first bearing and is rotatably installed on the brush.

[0014] In one embodiment, the number of the first bearings is two. A second mounting hole is formed at the other end of the brush, the two first bearings are respectively installed in the first mounting hole and the second mounting hole, and the connecting piece passes through one of the first bearings and is rotatably installed on the other first bearing.

[0015] In one embodiment, the dust cleaning device further includes a second bearing. The second bearing is installed in the rotating hole, and the connecting piece is rotatably installed on the second bearing.

[0016] In one embodiment, the dust cleaning device further includes a handle. One end of the handle is connected with the connecting piece, and the other end of the handle is used for being connected with the overhead crane.

[0017] In one embodiment, the roller is an insulating roller, and the brush is an insulating brush.

[0018] The present utility model further provides an overhead crane system, including a track, an overhead crane, a plurality of overhead crane power supply sliding wires and a plurality of the above-mentioned dust cleaning devices. The overhead crane is slidably installed on the track. A power supply contact is formed on the overhead crane, and the overhead crane is electrically connected with the overhead crane power supply sliding wire through the power supply contact. The dust cleaning device is connected with the overhead crane and is arranged close to the power supply contact.

[0019] In the above solution, the dust cleaning device is used for cleaning the overhead crane power supply sliding wire. The dust cleaning device is used to connect with the overhead crane. The dust cleaning device includes rollers and a cleaning assembly. The rollers are used for rolling and installing on the overhead crane power supply sliding wire. The cleaning assembly includes a connecting piece and a brush. The roller is formed with a rotating hole. The connecting piece is rotatably installed in the rotating hole. The brush is connected to one end of the connecting piece. The brush is used to contact one side of the overhead crane power supply sliding wire. Specifically, connect the dust cleaning device with the overhead crane, and the rollers are rolling installed on the overhead crane power supply sliding wire. After connecting the rollers and the brush through the connecting piece in this way, the brush will contact one side of the overhead crane power supply sliding wire. When transportation is required, place the workpiece to be transported on the overhead crane. There are power supply contacts arranged on the overhead crane. Then the overhead crane is electrically connected to the overhead crane power supply sliding wire through the power supply contacts. The power supply contacts of the overhead crane will move on the overhead crane power supply sliding wire. Since the overhead crane is connected to the dust cleaning device in this way, when the overhead crane moves, it will drive the dust cleaning device to move. The rollers will roll on the overhead crane power supply sliding wire, and the rollers will move along the overhead crane power supply sliding wire. The brush will follow and move, thereby cleaning the dust and impurities on one side of the overhead crane power supply sliding wire. In this way, the dust and ash will not remain on the overhead crane power supply sliding wire, the overhead crane power supply sliding wire will not accumulate excessive ash, and there will be no faults such as poor contact, inability to strike a spark, or even short circuit between the power supply contacts on the overhead crane and the overhead crane power supply sliding wire. In the present utility model, by arranging the dust cleaning device on the overhead crane, the dust on the overhead crane power supply sliding wire can be cleaned simultaneously when the overhead crane is running. The operator does not need to manually knock the overhead crane power supply sliding wire with an insulating rod, avoiding the risk of electric shock to the operator and ensuring the safety of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0021] Figure 1 It is a schematic structural view of one perspective of an embodiment of the dust cleaning device provided by the present utility model;

[0022] Figure 2 It is a schematic structural view of another perspective of an embodiment of the dust cleaning device provided by the present utility model;

[0023] Figure 3 It is a schematic structural view of one perspective of an embodiment of the overhead crane system provided by the present utility model;

[0024] Figure 4 It is a schematic structural view of another perspective of an embodiment of the overhead crane system provided by the present utility model.

[0025] Description of the reference numerals in the drawings:

[0026] 100, dust cleaning device; 200, overhead crane system; 1, roller; 2, cleaning assembly; 21, connecting member; 22, brush; 11, rotating hole; 211, first connecting rod; 212, second connecting rod; 213, third connecting rod; 12, annular baffle; 121, rolling groove; 3, first bearing; 221, first mounting hole; 222, second mounting hole; 4, second bearing; 5, handle; 6, two-way rigid connecting member; 7, three-way rigid connecting member; 201, track; 202, overhead crane; 202a, power supply contact; 203, overhead crane power supply sliding wire.

[0027] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0030] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present utility model, the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0031] Currently, the power supply for overhead cranes usually adopts the three-phase four-wire steel body bare trolley wire power supply method. When the overhead crane is running, the power supply contact of the overhead crane will move on the power supply trolley wire. This method effectively solves the problem of the extremely long power supply line during the operation of the overhead crane, and at the same time avoids the safety problems of special equipment lines. However, there are potential risks of poor contact in the three-phase four-wire steel body bare trolley wire power supply mode. Especially when the trolley wire is exposed to a dusty or dirty environment for a long time, once excessive dust accumulates on the trolley wire, it will cause serious faults such as poor contact, arcing, and even short circuit of the overhead crane, threatening the normal operation and production safety of the overhead crane, and even causing the overhead crane to stop running.

[0032] Please refer to Figures 1 to 4 , the present utility model proposes a dust cleaning device 100. The dust cleaning device 100 is used for cleaning the power supply trolley wire 203 of the overhead crane. The dust cleaning device 100 is used to connect with the overhead crane 202. The dust cleaning device 100 includes a roller 1 and a cleaning component 2. The roller 1 is used for rolling installation on the power supply trolley wire 203 of the overhead crane; the cleaning component 2 includes a connecting piece 21 and a brush 22. The roller 1 is formed with a rotating hole 11. The connecting piece 21 is rotatably installed in the rotating hole 11. The brush 22 is connected to one end of the connecting piece 21. The brush 22 is used for contacting one side of the power supply trolley wire 203 of the overhead crane. Specifically, connect the dust cleaning device 100 with the overhead crane 202, and the roller 1 is rollingly installed on the power supply trolley wire 203 of the overhead crane. After connecting the roller 1 and the brush 22 through the connecting piece 21 in this way, the brush 22 will contact one side of the power supply trolley wire 203 of the overhead crane. When transportation is required, place the workpiece to be transported on the overhead crane 202. There is a power supply contact 202a on the overhead crane 202. Then the overhead crane 202 is electrically connected to the power supply trolley wire 203 through the power supply contact 202a. The power supply contact 202a of the overhead crane 202 will move on the power supply trolley wire 203 of the overhead crane. Since the overhead crane 202 is connected to the dust cleaning device 100 in this way, when the overhead crane 202 moves, it will drive the dust cleaning device 100 to move. The roller 1 will roll on the power supply trolley wire 203 of the overhead crane. The roller 1 will move along the power supply trolley wire 203 of the overhead crane, and the brush 22 will move accordingly, thereby cleaning the dust and impurities on one side of the power supply trolley wire 203 of the overhead crane. In this way, dust and dirt will not remain on the power supply trolley wire 203 of the overhead crane, and the power supply trolley wire 203 will not accumulate excessive dust. There will be no faults such as poor contact, inability to arc, and even short circuit between the power supply contact 202a on the overhead crane 202 and the power supply trolley wire 203; in the present utility model, by setting the dust cleaning device 100 on the overhead crane 202, the dust on the power supply trolley wire 203 can be cleaned simultaneously when the overhead crane 202 is running. The operator does not need to manually knock on the power supply trolley wire 203 with an insulating rod, avoiding the risk of electric shock to the operator and ensuring the safety of the operator.

[0033] Please refer to Figure 1 and Figure 2, in one embodiment, the number of the brushes 22 is three. Two of the brushes 22 are both arranged on the connecting member 21, and the two brushes 22 are respectively used to contact with two sides of the overhead crane power supply trolley wire 203, and the other brush 22 is wound around the roller 1 to be used to contact with the top surface of the overhead crane power supply trolley wire 203. Specifically, the two brushes 22 are arranged on the connecting member 21, and the two brushes 22 are respectively used to contact with two sides of the overhead crane power supply trolley wire 203. In this way, when the power supply contact point 202a on the overhead crane 202 slides on the overhead crane power supply trolley wire 203, the overhead crane 202 will drive the dust cleaning device 100 to move. The two brushes 22 respectively clean the dust on two sides of the overhead crane power supply trolley wire 203. Then, a brush 22 is wound around the contour of the roller 1 for one week. In this way, when the roller 1 rolls and moves, the top surface of the overhead crane power supply trolley wire 203 will also be cleaned. In this way, the dust on the overhead crane power supply trolley wire 203 can be further removed, and further prevent faults such as poor contact, inability to generate a spark, and even short circuit between the power supply contact point 202a on the overhead crane 202 and the overhead crane power supply trolley wire 203.

[0034] Further, the length of the brush can be set according to actual use requirements, that is, selected according to the formation, structure and connection relationship of the overhead crane power supply trolley wire 203.

[0035] Please refer to Figure 1 and Figure 2 , in one embodiment, the connecting member 21 includes a first connecting rod 211, a second connecting rod 212 and a third connecting rod 213. Two ends of the first connecting rod 211 are respectively connected to the second connecting rod 212 and the third connecting rod 213. The first connecting rod 211 is rotatably sleeved in the rotating hole 11, and the two brushes 22 are respectively rotatably sleeved in the second connecting rod 212 and the third connecting rod 213. The two brushes 22 are respectively rotatably installed on the second connecting rod 212 and the third connecting rod 213. In this way, when the roller 1 rolls on the overhead crane power supply trolley wire 203, the two brushes 22 will also roll on two sides of the overhead crane power supply trolley wire 203 to clean the dust on two sides of the overhead crane power supply trolley wire 203. While cleaning the surfaces on two sides of the overhead crane power supply trolley wire 203, the dust adhered to the brushes 22 is self-cleaned under the action of friction. Through such a setting, it is not necessary for the operator to often clean the dust on the brushes 22, and the brushes 22 can achieve self-cleaning, greatly reducing the maintenance probability.

[0036] Please refer to Figure 1 and Figure 2, in one embodiment, annular baffles 12 are formed on both sides of the roller 1, a rolling groove 121 is formed between the two annular baffles 12, and the roller 1 is used for rolling and installing on the overhead crane power supply trolley wire 203 through the rolling groove 121. The two annular baffles 12 can be respectively used for abutting against both sides of the overhead crane power supply trolley wire 203. The roller 1 is rolled and installed on the overhead crane power supply trolley wire 203 through the rolling groove 121, and the annular baffles 12 on both sides of the roller 1 are respectively located on both sides of the overhead crane power supply trolley wire 203. In this way, when the overhead crane 202 moves, it drives the roller 1 to roll through the rolling groove 121. Annular baffles 12 are formed on both sides of the roller 1, and the roller 1 rolls along the overhead crane power supply trolley wire 203. When the roller 1 moves and is offset, the overhead crane power supply trolley wire 203 abuts against the annular baffle 12, so that the roller 1 can be prevented from falling off the overhead crane power supply trolley wire 203. Through such a setting, the service life of the dust cleaning device 100 is greatly improved.

[0037] Please refer to Figure 1 and Figure 2 , in one embodiment, the dust cleaning device 100 further includes a first bearing 3. One end of the brush 22 forms a first mounting hole 221, the first bearing 3 is installed in the first mounting hole 221, and the connecting member 21 passes through the first bearing 3 and is rotatably installed on the brush 22. By providing the first bearing 3, during the rotation of the brush 22, the brush 22 can rotate more smoothly and reliably, and by providing the first bearing 3, the service life of the dust cleaning device 100 and the brush 22 can also be extended, and the frequency of maintenance and replacement can be reduced.

[0038] Please refer to Figure 1 and Figure 2 , in one embodiment, the number of the first bearings 3 is two. The other end of the brush 22 forms a second mounting hole 222, and the two first bearings 3 are respectively installed in the first mounting hole 221 and the second mounting hole 222. The connecting member 21 passes through one of the first bearings 3 and is rotatably installed in the other first bearing 3. By installing the first bearings 3 at both ends of the brush 22, the rotation of the brush 22 can be further made smooth, ensuring that there will be no jamming when the brush 22 rotates.

[0039] Please refer to Figure 1 and Figure 2 , in one embodiment, the dust cleaning device 100 further includes a second bearing 4. The second bearing 4 is installed in the rotating hole 11, and the connecting member 21 is rotatably installed in the second bearing 4. By providing the second bearing 4, during the rotation of the roller 1, the roller 1 can rotate more smoothly and reliably, and by providing the second bearing 4, the service life of the roller 1 can also be extended, and the frequency of maintenance and replacement can be reduced.

[0040] Please refer to Figure 1 and Figure 2, Further, both the first bearing 3 and the second bearing 4 are contact bearings with double-sided seals. A contact bearing with double-sided seals generally refers to a deep groove ball bearing or other type of rolling bearing with contact seals. This type of bearing is equipped with seals on both sides to prevent lubricant leakage and the entry of external contaminants into the bearing interior. The contact seals are usually made of rubber or other elastic materials and are in close contact with the outer ring of the bearing to provide good sealing performance. The contact bearing with double-sided seals has good sealing performance, which can effectively block the entry of external contaminants such as dust, moisture, and grease into the bearing interior, while preventing the leakage of internal lubricating oil, extending the service life of the bearing. And due to the presence of the seals, the bearing does not need to be refueled frequently, reducing the maintenance frequency and maintenance cost. In a dusty, humid, or polluted environment, the double-sealed bearing can provide better protection to ensure the normal operation of the bearing in a harsh environment.

[0041] Please refer to Figure 1 and Figure 2 , In an embodiment, the dust cleaning device 100 further includes a handle 5. One end of the handle 5 is connected to the connecting member 21, and the other end of the handle 5 is used to be connected to the overhead crane 202. By providing the handle 5 to connect the connecting member 21 and the overhead crane 202 to each other, it can enable the dust cleaning device 100 to move synchronously with the overhead crane 202 to clean the dust. And when a failure occurs, the operator can also manually push it, so that the dust cleaning device 100 moves, which can facilitate the operator to perform maintenance or detection. The handle of the dust cleaning device 100 can be connected to the overhead crane 202 by means of welding, magnetic attraction, or threaded connection.

[0042] Please refer to Figure 1 and Figure 2 , Further, the dust cleaning device 100 further includes a two-way rigid connecting member 6 and a three-way rigid connecting member 7. One end of the two-way rigid connecting member 6 is connected to the first connecting rod 211, the other end of the two-way rigid connecting member 6 is connected to the second connecting rod 212, the first end of the three-way rigid connecting member 7 is connected to the first connecting rod 211, the second end of the three-way rigid connecting member 7 is connected to the third connecting rod 213, and the third end of the three-way rigid connecting member 7 is connected to the handle 5 and is fixed and positioned by hole-shaft fit and pins to ensure the stability of the device operation.

[0043] In an embodiment, the roller 1 is an insulating roller 1, and the brush 22 is an insulating brush 22. By providing the insulating roller 1 and the insulating brush 22, it can prevent the occurrence of potential safety hazards when the operator repairs the dust cleaning device 100.

[0044] Please refer to Figures 1 to 4, the present utility model further provides a crane system 200, which includes a track 201, a crane 202, a plurality of crane power supply sliding wires 203, and a plurality of the above-mentioned dust cleaning devices 100. The crane 202 is slidably installed on the track 201. A power supply contact 202a is formed on the crane 202. The crane 202 is electrically connected to the crane power supply sliding wire 203 through the power supply contact 202a. The dust cleaning device 100 is connected to the crane 202 and is arranged close to the power supply contact 202a. Specifically, the dust cleaning device 100 is connected to the crane 202 through a handle 5. The roller 1 is rotatably installed on the crane power supply sliding wire 203. After connecting the roller 1 and the brush 22 through a connecting member 21 in this way, the brush 22 will contact one side of the crane power supply sliding wire 203. When transportation is required, the workpiece to be transported is placed on the crane 202. A power supply contact 202a is provided on the crane 202. Then the crane 202 is electrically connected to the crane power supply sliding wire 203 through the power supply contact 202a. The power supply contact 202a of the crane 202 will move on the crane power supply sliding wire 203. Since the crane 202 is connected to the dust cleaning device 100 in this way, when the crane 202 moves, it will drive the dust cleaning device 100 to move. The roller 1 will roll on the crane power supply sliding wire 203. The roller 1 will move along the crane power supply sliding wire 203, and the brush 22 will follow the movement, so as to clean the dust and impurities on one side of the crane power supply sliding wire 203. Since the dust cleaning device 100 is arranged close to the power supply contact 202a, the dust and impurities at the power supply contact 202a on the crane 202 will be cleaned first. In this way, the dust and dust will not remain on the crane power supply sliding wire 203, the crane power supply sliding wire 203 will not accumulate excessive dust, and there will be no faults such as poor contact, inability to generate a spark, or even short circuit between the power supply contact 202a on the crane 202 and the crane power supply sliding wire 203. Since the crane system 200 includes all the implementation manners of all the above-mentioned dust cleaning devices 100, it has at least all the beneficial effects brought by all the above-mentioned implementation manners, and will not be elaborated one by one here.

[0045] The above is only an exemplary implementation manner of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. A dust cleaning device for cleaning the power supply sliding wire of an overhead crane, the dust cleaning device is used to be connected to the overhead crane, characterized in that: include: A roller, the roller being used for rolling installation on the overhead travelling crane power supply sliding wire; A cleaning component includes a connecting piece and a brush. The roller is formed with a rotating hole. The connecting piece is rotatably mounted in the rotating hole. The brush is connected to one end of the connecting piece. The brush is used to contact one side of the overhead travelling crane power supply sliding wire.

2. The dust cleaning device according to claim 1, characterized in that: The number of the brushes is three, two of which are arranged on the connecting piece, and the two brushes are respectively used to contact the two sides of the overhead travelling crane power supply sliding wire, and the other brush is wound around the roller to contact the top surface of the overhead travelling crane power supply sliding wire.

3. The dust cleaning device according to claim 2, characterized in that: The connecting member includes a first connecting rod, a second connecting rod and a third connecting rod, the two ends of the first connecting rod are respectively connected to the second connecting rod and the third connecting rod, the first connecting rod is rotatably sleeved in the rotating hole, and the two brushes are respectively rotatably sleeved on the second connecting rod and the third connecting rod.

4. The dust cleaning device according to any one of claims 1 to 3, characterized in that: Annular baffles are formed on both sides of the roller, and a rolling groove is formed between the two annular baffles. The roller is used for rolling installation on the overhead travelling crane power supply sliding wire through the rolling groove, and the two annular baffles can be used to abut against both sides of the overhead travelling crane power supply sliding wire respectively.

5. The dust cleaning device according to any one of claims 1 to 3, characterized in that: The dust cleaning device further comprises a first bearing, a first mounting hole is formed at one end of the brush, the first bearing is mounted in the first mounting hole, and the connecting member passes through the first bearing and is rotatably mounted on the brush.

6. The dust cleaning device as claimed in claim 5, characterized in that: There are two first bearings, a second mounting hole is formed at the other end of the brush, two first bearings are respectively mounted on the first mounting hole and the second mounting hole, and the connecting member passes through one of the first bearings and is rotatably mounted on the other first bearing.

7. The dust cleaning device according to any one of claims 1 to 3, characterized in that: The dust cleaning device further comprises a second bearing, the second bearing is mounted on the rotating hole, and the connecting member is rotatably mounted on the second bearing.

8. The dust cleaning device according to any one of claims 1 to 3, characterized in that: The dust cleaning device also includes a handle, one end of which is connected to the connecting piece, and the other end of which is used to be connected to the overhead travelling crane.

9. The dust cleaning device according to any one of claims 1 to 3, characterized in that: The roller is an insulating roller, and the brush is an insulating brush.

10. An overhead travelling crane system, characterized in that: It comprises a track, an overhead crane, a plurality of overhead crane power supply sliding wires and a plurality of dust cleaning devices according to any one of claims 1 to 9, the overhead crane is slidably mounted on the track, a power supply contact is formed on the overhead crane, the overhead crane is electrically connected to the overhead crane power supply sliding wire via the power supply contact, the dust cleaning device is connected to the overhead crane, and the dust cleaning device is arranged close to the power supply contact.

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