Cleaning device

Abstract

To provide a cleaning device connected to a conveying device in a manufacturing factory or the like, the cleaning device being designed to be able to stably collect dust, to achieve a smaller size and low power consumption, and to reduce the frequency of maintenance.SOLUTION: A cleaning device 20 includes: an attachment 21 configured to connect the cleaning device to a conveying device 1; a first adsorbing rotor 60 provided to face a floor surface F and configured to electrostatically adsorb dust while rotating during traveling; a urethane blade 62 configured to remove dust from the first adsorbing rotor 60; and a dust box unit 40 configured to store the blade 62 removed by the urethane blade 62.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a cleaning device, and more particularly to a cleaning device that is connected to a baggage conveying device used, for example, in a manufacturing plant, a logistics warehouse, or the like, and that collects dust from a traveling surface. [Background technology]

[0002] In recent years, in manufacturing plants, logistics warehouses, etc., work efficiency has been improved by having a conveying device that travels on a predetermined track transport luggage. For example, in manufacturing plants, conveying devices are used to transport parts between a stockyard where parts are stocked and an assembly area where products are assembled. Here, it has been conventionally known that the driving tires of the conveying device bring dust from the floor of the stockyard to the assembly area, causing the floor to become dirty in the form of ruts and scattering the dust. For this reason, a measure to remove dust attached to the driving tires by placing an adhesive sheet on the track of the conveying device is generally taken. However, the adhesive force of the adhesive sheet on the track is rapidly reduced as the number of passing conveying devices increases due to the increase in dust, so that the countermeasure effect cannot be fully obtained, which has been a problem. In order to solve this problem, as a configuration for collecting dust on the travel path without scattering it, for example, Patent Document 1 proposes connecting an adhesive roller type cleaning device to the conveying device in a clean room and cleaning while transporting luggage. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2005-334836 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, when the running surface of a general manufacturing plant is cleaned with an adhesive roller as in the past, the amount of dust is large compared to when cleaning a clean room, and the adhesiveness quickly decreases. Therefore, there are problems in terms of the cost of consumables and the problem of increased maintenance frequency. In addition, if a mechanism for winding up the adhesive part is attached to the cleaning device, there is a problem that the device becomes large because of the large number of consumables. In addition, the running surface does not have a dedicated path, and there are unevenness such as track tape, floor scratches, and steps, and further, dust also has various particle diameter differences, so in the case of an adhesive roller, there are problems such as dust being left behind and tape peeling. Furthermore, cleaning with an adhesive roller requires actively pressing it against the running surface to rotate, which requires a high driving torque and is also a problem in terms of power consumption.

[0005] The present invention has been made under these circumstances, and aims to provide a cleaning device connected to a conveying device in a manufacturing plant, etc., that is capable of stably collecting dust, is compact, requires low power consumption, and requires little maintenance. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the present invention has the following configuration.

[0007] (1) A cleaning device for cleaning dust on a running surface of a conveying device, comprising: a connection means for connecting the cleaning device to the conveying device; an adsorption means provided opposite the running surface and having a first rotating body that electrostatically attracts the dust as it rotates during travel; a charging means for charging the adsorption means; a removal means for removing the dust from the first rotating body; and a storage section for storing the dust removed by the removal means. Effect of the Invention

[0008] According to the present invention, in a cleaning device connected to a transport device in a manufacturing plant or the like, it is possible to stably collect dust, and to realize a compact device with low power consumption and low maintenance. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic perspective view illustrating how a transport device connected to a cleaning device of a first embodiment transports luggage. [Diagram 2] 1 is a schematic rear perspective view of a conveying device according to a first embodiment of the present invention; [Diagram 3] FIG. 1 is a schematic rear perspective view of a conveying device to which a cleaning device according to a first embodiment is connected; [Figure 4] FIG. 1 is a schematic front perspective view of a cleaning device according to a first embodiment with a dust box unit removed; [Diagram 5] FIG. 1 is a schematic perspective view illustrating a dust box unit according to a first embodiment; [Figure 6] FIG. 1 is a schematic cross-sectional view of a dust box unit illustrating an electrostatic cleaning mechanism according to a first embodiment of the present invention; [Figure 7] FIG. 1 is a schematic top view illustrating a cleaning width when the cleaning device of the first embodiment cleans a floor surface. [Figure 8] FIG. 1 is a schematic perspective view illustrating the transportation of a baggage rack by a transport device connected to a cleaning device according to a first embodiment. [Figure 9] FIG. 11 is a schematic explanatory diagram illustrating a cleaning device according to a second embodiment. [Figure 10] FIG. 11 is a schematic perspective view illustrating the width direction movement of the cleaning device according to the second embodiment. [Figure 11] FIG. 11 is a perspective view illustrating a cleaning device according to a second embodiment. [Figure 12] FIG. 11 is a schematic top view illustrating a cleaning width when the cleaning device of the second embodiment cleans a floor surface. [Figure 13] FIG. 11 is a schematic perspective view illustrating the transportation of the luggage rack of the transport device connected to the cleaning device of the second embodiment. [Figure 14] FIG. 11 is a schematic perspective view illustrating the transportation of the luggage rack of the transport device connected to the cleaning device of the third embodiment. [Figure 15] FIG. 11 is a schematic top view illustrating a cleaning width when the cleaning device of the third embodiment cleans a floor surface. [Figure 16] FIG. 11 is a diagram for explaining a state in which the conveying device rotates under the luggage rack in the third embodiment. [Figure 17] FIG. 13 is a schematic perspective view of a conveying device to which the cleaning device of the fourth embodiment is connected. [Figure 18] FIG. 13 is a schematic perspective view illustrating attachment and detachment of a dust box of a cleaning device according to a fourth embodiment. [Figure 19] FIG. 11 is a partial cross-sectional view of a conveying device connected to a cleaning device according to a fourth embodiment of the present invention; [Figure 20] FIG. 13 is an explanatory diagram of the driving input of a conveying device connected to a cleaning device according to a fourth embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS EXAMPLES

[0010] [Transportation equipment and running surface] The cleaning device of the first embodiment is connected to a transport device that transports luggage, and cleans unnecessary objects (hereinafter, referred to as dust) on the running surface of the transport device. The first embodiment will be described with reference to Figs. 1 to 8. Fig. 1 shows a state in which a plurality of transport devices 1 are running along a predetermined track on a floor surface F, which is the running surface of a manufacturing plant. There are transport devices 1 (1A) that are running while carrying luggage on luggage racks 14, and transport devices 1 (1B) that are not carrying luggage racks 14 depending on the situation. When transporting luggage using the luggage racks 14, the transport devices 1 slip under the luggage racks 14 and then lift up the lift-up plates 15 to lift the legs 16 of the luggage racks 14 off the floor surface F for transportation.

[0011] FIG. 2 is a rear perspective view of the conveying device 1. The conveying device 1 is composed of a main frame 2, a driving tire 3, a driving motor 4, a caster 5, a reflective line sensor 6, and an RFID (Radio Frequency Identification) sensor 7. The driving tire 3 corresponds to at least one pair of wheels provided symmetrically with respect to the center of the width direction in the width direction perpendicular to the moving direction Dr. In FIG. 2, the driving tire 3 is provided in one pair symmetrically with respect to a center virtual line Cr (broken line) in the width direction of the conveying device 1, and the caster 5 is provided in two pairs symmetrically with respect to the center virtual line Cr in the width direction of the conveying device 1. Furthermore, the driving tire 3 is provided in the center of the conveying device 1 in the moving direction Dr, and one pair of casters 5 is provided in front of the conveying device 1 in the moving direction Dr, and the other pair is provided in the rear of the conveying device 1 in the moving direction Dr. Here, the width direction is a direction perpendicular to the moving direction Dr of the conveying device 1. Hereinafter, the width direction perpendicular to the moving direction Dr is also referred to as the left-right direction.

[0012] The conveying device 1 is capable of turning (right and left) by providing a difference in rotation speed between the left and right drive tires 3, and is also capable of moving forward and backward. Furthermore, as shown in Fig. 2, the drive tires 3 are often configured to have a length in the width direction of the conveying device 1 that is substantially the same as the width of the main body frame 2 (at the very limit of the width). Furthermore, an RFID tag 9 is affixed to the running surface as a storage member that stores information about the position on the running surface (information such as an address), and the conveying device 1 has an RFID sensor 7 as a reading unit that reads information from the RFID tag 9.

[0013] The floor surface F of the manufacturing plant in FIG. 1 is generally an epoxy-coated conductive floor, and is often green in color. Aluminum tape 8 and an RFID tag 9 are attached to the floor surface F. The RFID tag 9 stores identification information, such as a number. For example, the stop position of the conveying device 1, address information, and information such as which way to turn at a Y-shaped intersection are linked and stored in the RFID tag 9. The control board 12 described later can read the information stored in the RFID tag 9 with the RFID sensor 7 and operate the conveying device 1 based on the read information. The conveying device 1 is also equipped with obstacle sensors 10 (only one of which is shown in FIG. 2) at the front and rear of the main frame 2, a control board 12, a wireless communication unit (wireless communication means), and a small battery 13 as a power source inside. Using the wireless communication unit, it is possible to send and receive control information from an external computer, perform remote operation, and control between the conveying devices 1. The control board 12 controls the conveying device 1. Note that the control method of the conveying device 1 is not limited to this method, and there are various methods such as camera recognition, GPS, a type in which the track is embedded inside the floor, and a trackless method. However, this method allows for smooth operation with short downtime even when multiple conveying devices 1 are operated in a narrow and complicated manufacturing plant, and can be introduced easily and at low cost, including changes to the running layout.

[0014] 1 shows the tracks of the driving tires 3 of the conveying device 1. The tracks 11 are generally contaminated with fine dust brought in from a parts stockyard by the driving tires 3, forming the track marks. In addition, the cleaning device 20 of the first embodiment is connected to the rear of the conveying device 1.

[0015] [Cleaning device] 3 is a rear perspective view illustrating a state in which the cleaning device 20 of the first embodiment is connected to the transport device 1. The cleaning device 20 is connected to the main body frame 2 of the transport device 1 via an attachment 21, with a connecting pin 22 as a rotation fulcrum. That is, the connecting pin 22 is provided between the attachment 21 and the tire 23, and functions as a rotation axis perpendicular to the traveling surface. A dust box unit 40, which will be described later, rotates around the connecting pin 22 as a rotation axis in accordance with the rotation of the transport device 1.

[0016] The cleaning device 20 is in contact with the floor surface F by a set of tires 23 supported by a frame 25 and a set of casters 24 provided rearward of the tires 23 in the movement direction Dr. The tires 23 and casters 24 are provided in pairs on the left and right in the width direction. The cleaning device 20 also has a dust box unit 40, which is detachable from the frame 25.

[0017] The attachment 21 and the main body frame 2 are connected by a magnet. That is, the transport device 1 has the main body frame 2 as a magnetized connected means at its rear end in the moving direction Dr. Also, the cleaning device 20 has the attachment 21 as a connecting means that magnetically connects to the main body frame 2 at its front end in the moving direction Dr. This not only makes it possible to adjust the mounting position of the cleaning device 20 relative to the transport device 1, but also makes it possible for the attachment 21 (i.e., the cleaning device 20) to be releasable so as to come off from the transport device 1 when a predetermined or greater external force is applied to the cleaning device 20.

[0018] (About driving force) 4 is a front perspective view of the cleaning device 20 with the dust box unit 40 removed. The cleaning device 20 has tires 23, which are a pair of wheels, provided forward of a first attraction rotor 60 and a second attraction rotor 61, which will be described later, in the moving direction Dr. The tires 23 are provided symmetrically with respect to the center in the width direction perpendicular to the moving direction Dr. The frame 25 has a surface 26a having a connecting hole 26 that connects with the connecting pin 22 in FIG. 3, an I-cut hole 27 with which the I-cut boss 41 (see FIG. 5) of the dust box unit 40 engages, an abutment surface 28 to which the abutment boss 42 (see FIG. 5) is biased, and a biasing lever 29.

[0019] In the first embodiment, the cleaning device 20 does not have a driving source such as a motor, and generates a driving force by being pulled by the transport device 1. Therefore, in the first embodiment, the transport device 1 functions as a driving means. When the cleaning device 20 is connected to the transport device 1 through the connecting hole 26 and pulled by the transport device 1, the tire 23 rotates on the floor surface F by being driven. The power by the rotation of the tire 23 is reduced and transmitted by the drive transmission gear (not shown) provided inside the gear box unit 30 and the gear box unit 31, and is output to the output shaft 32 arranged on both sides of the gear box units 30 and 31. The drive transmission gears in the gear box unit 30 and the gear box unit 31 function as a transmission means for transmitting the rotation of the tire 23 to the first adsorption rotor 60. The output shaft 32 rotates in the direction of the arrow 33 on the same axis (dashed line R1) as the I-cut hole 27. Note that there is also an output shaft 32 (shown by a dashed line) on the back side in FIG. 4. A first attraction rotor 60, which will be described later, receives the rotational force of the tire 23 moving in the moving direction Dr via drive transmission gears in the gear box portion 30 and the gear box portion 31.

[0020] (Dust Box Unit) Next, the dust box unit 40 will be described with reference to Figures 5(a) to (d). The dust box unit 40 in Figure 5(a) is composed of a frame 45 of the dust box unit 40, a first adsorptive rotor 60 (first rotor), a second adsorptive rotor 61 (second rotor), a gear box section 49, a dust cover 55, and a urethane blade 62 (see Figure 5(c)).

[0021] The first attraction rotor 60 is provided facing the traveling surface, and electrostatically attracts dust while rotating during traveling. The second attraction rotor 61 contacts the first attraction rotor 60 and rotates following the rotation of the first attraction rotor 60 to collect the dust attracted to the first attraction rotor 60. The first attraction rotor 60 and the second attraction rotor 61 function as an attraction means. The urethane blade 62, which is a removal means (blade), contacts the surface of the second attraction rotor 61 and removes the dust collected by the second attraction rotor 61. The first attraction rotor 60 and the second attraction rotor 61 clean the dust on the trajectory of each driving tire 3 of the conveying device 1 traveling on the traveling surface. In addition, the first attraction rotor 60, the second attraction rotor 61, and the urethane blade 62 are divided into at least two in the width direction at the center in the width direction perpendicular to the moving direction Dr. Furthermore, the first attraction rotor 60 is configured so that the outer diameter of the end portion is larger than the outer diameter of the central portion in the width direction perpendicular to the movement direction Dr.

[0022] These are integrally configured to be detachably attached to the frame 25 shown in Fig. 4. The gear box section 49 houses gears for driving the first attraction rotor 60 and the second attraction rotor 61. The cleaning device 20 of the first embodiment is not only capable of processing dust, but also allows the dust box unit 40 to be easily replaced as a consumable item.

[0023] The frame 45 has a handle portion 46 and a groove portion 47, and the dust cover 55 can be attached and detached in the direction of the arrow 56. The handle portion 46 is formed with a grip so that it can be pulled in the direction of the arrow 56 when removing the dust box unit 40 from the frame 25. The handle portion 46 is configured in a position where the first adsorptive rotator 60 and the second adsorptive rotator 61 face upward when the user holds the dust box unit 40, as shown in FIG. 5(b), and is disposed approximately near the center of gravity of the dust box unit 40. Since the first adsorptive rotator 60 and the second adsorptive rotator 61 face upward when the handle portion 46 is held, the risk of dust in the dust box unit 40 leaking from the first adsorptive rotator 60 and the second adsorptive rotator 61 side is reduced.

[0024] The dust box unit 40 has a drop prevention part 58 on the surface facing the handle part 46, which prevents the dust box unit 40 from dropping when the user grabs it from the direction of the arrow 57. In the first embodiment, the drop prevention part 58 is shaped to prevent slipping. FIG. 5(c) shows the dust cover 55, to which the urethane blade 62 is attached. FIG. 5(d) is a rear perspective view of the dust box unit 40 with the dust cover 55 removed. The dust box area 69, which is a storage part for storing dust removed by the urethane blade 62, is located in the position shown in the figure.

[0025] The frame 45 has an I-cut boss 41 and an abutment boss 42 on the end surface of FIG. 5(b). The drive input shaft 48 is coaxial with the I-cut boss 41. The gear box section 49 has a drive transmission gear, which transmits the drive force input from the drive input shaft 48 to the first attraction rotor 60 and the second attraction rotor 61. When the dust box unit 40 is attached to the frame 25 of FIG. 4, the drive input shaft 48 engages with the output shaft 32 and receives the drive force. The groove section 47 of FIG. 5 is a relief section of the gear box section 31. By providing the drive input section to the dust box unit 40 in the groove section 47 in the center, it is possible to expand the cleaning width of the cleaning device 20 (hereinafter referred to as the cleaning width) to the limit of the width of the conveying device 1.

[0026] In addition, the first attraction rotor 60, the second attraction rotor 61, and the urethane blade 62 are divided into two in the longitudinal direction (the width direction of the cleaning device 20). This not only makes it possible to clean the ruts 11 shown in Fig. 1 and reduces the risk of cleaning problems caused by bending of these components due to making them long without dividing them into two, but also reduces the cost of parts required for making them long. In addition, in Example 1, the drive section (drive input shaft 48, gear box section 49) is configured in the center, but it does not have to be completely in the center.

[0027] 5(a) so that the airflow in the travel direction of the transport device 1 hits the surface of the second adsorption rotor 61. An air outlet window 51 is provided on the opposite side to the air inlet window 50 at a position shown in FIG. 5(d) as an exhaust port through which the air that has flowed in from the air inlet window 50 flows out.

[0028] (Electrostatic cleaning configuration) Next, the electrostatic cleaning configuration of the cleaning device 20 will be described with reference to FIG. 6. The electrostatic cleaning method is a cleaning method that generally uses Coulomb force as the main force to attract dust. The electrostatic cleaning method is a method that can selectively collect fine dust of a size that can be stirred up, which is an issue in manufacturing plants, with low torque and without stirring up the dust. By selectively collecting the dust size, long-term continuous cleaning is possible even if the container size of the dust box unit 40 is reduced. Note that the term "dust" in the first embodiment is used to collectively refer to dust that can be electrostatically collected regardless of size, such as dust, fine powder, and small-grained dust, as well as light-weight dust.

[0029] FIG. 6 is a cross-sectional view of the dust box unit 40. The first adsorptive rotator 60, which is an adsorptive rotator, the second adsorptive rotator 61, which is a peeling means, and the urethane blade 62 in contact therewith are arranged. The surface of the first adsorptive rotator 60 has a brushed surface layer and is made of a brush made of polyethylene (PET), and the surface of the second adsorptive rotator 61 is made of a substantially smooth fluororesin material (PFA) that is more negative than PET in the triboelectric series. That is, the potential difference between the dust and the second adsorptive rotator 61 is configured to be larger than the potential difference between the dust and the first adsorptive rotator 60. The first adsorptive rotator 60 is in contact with the floor surface F and the second adsorptive rotator 61. The charging means is frictional charging by rotating the first adsorptive rotator 60 in the direction of the arrow 64 and the second adsorptive rotator 61 in the direction of the arrow 65.

[0030] The surface of the first adsorptive rotator 60 is not limited to PET, and may be any material capable of adsorbing dust by electrostatic force. The second adsorptive rotator 61 may be any material that has a greater potential difference with the dust than the potential difference between the dust and the first adsorptive rotator 60. For example, when it is desired to collect positively charged dust, the first adsorptive rotator 60 may be made of polystyrene or the like, and the second adsorptive rotator 61 may be made of a material that is more negatively charged than polystyrene in the triboelectric series, such as polypropylene.

[0031] The towing direction (movement direction Dr) of the cleaning device 20 is the direction of arrow 66, and dust D1 on the floor surface F is attracted to the electrostatically negatively charged first attraction rotor 60, and then dust D2 is attracted to the more strongly negatively charged second attraction rotor 61 at a transfer section 67. Then, the dust is peeled off by a urethane blade 62 at section D3, and is collected in a dust box area 69 as shown by an arrow 68.

[0032] Also, some of the floating dust D4 is stirred up by the conveying device 1 and its driving tire 3 and floats in the air. The second attracting rotator 61 is strongly negatively charged by frictional charging in the electrification series, so that the conveying direction airflow 70 is introduced through the air inflow window 50 and exhausted through the air outflow window 51. The second attracting rotator 61 is exposed at least at a portion corresponding to the air inflow window 50, and can electrostatically collect the floating dust D4 on the surface during the inflow of the conveying direction airflow 70. In this way, the second attracting rotator 61 is partially exposed, and can also electrostatically collect dust in the air. In order to make the adsorption of the dust D2 by the transfer unit 67 more stable, a part of the frame 45 in front of the transfer unit 67 is a windbreak structure 45a against the conveying direction airflow 70. Also, by actively providing an airflow guide shape (not shown), the collection efficiency of the floating dust D4 is improved.

[0033] In the first embodiment, the overlap amount 71 of the first attraction rotor 60 with the floor surface F is changed in the longitudinal direction (width direction). Specifically, as shown in FIG. 5B, the outer diameter of the hatched area 73 of the first attraction rotor 60 is made smaller than that of the hatched area 72. The reason for this is to change the contact pressure with the floor surface F between the dusty wheel rut 11 and the other areas, and to reduce the torque by optimizing the cleaning ability. Note that the torque can be reduced by changing not only the diameter (outer diameter) but also the material, brush length, brush density, etc., since it is only necessary to reduce the contact surface pressure. Note that the amount of triboelectric charge changes slightly depending on the overlap amount 71 of the first attraction rotor 60 with the floor surface F in FIG. 6, but since the attraction is robust, there is no extreme difference in the cleaning ability.

[0034] In addition, dust of natural origin is generally weakly positive on the triboelectric series, and furthermore, industrial materials such as the first adsorption rotor 60 and the second adsorption rotor 61 generally have many options on the negatively charged side. Therefore, it is desirable that the material of each adsorption rotor is negatively charged on the triboelectric series, and furthermore, the second adsorption rotor 61 is more negatively charged than the first adsorption rotor 60. However, in principle, when dust is used as a reference, the width of the triboelectric series difference contributes greatly to the adsorption force. Therefore, as long as the order of the width of the triboelectric series difference is not broken in the same direction, the dust will reach the second adsorption rotor 61, so it is acceptable to use a material on the positive side of the triboelectric series. For example, when the dust is negatively charged, nickel is selected for the first adsorption rotor 60, and zinc, whose potential difference with the dust is larger than the potential difference between the dust and the first adsorption rotor 60, is selected for the second adsorption rotor 61. In addition, the material is not particularly limited to that of the first embodiment.

[0035] 6, the first attraction rotor 60 may be positively charged due to frictional charging at the transfer unit 67. Because of concerns about an increase in torque, the charge may be controlled by rubbing the first attraction rotor 60 against a nylon material that tends to be positively charged in the triboelectric series in the hatched area 73 in FIG. 5(b). This makes it possible to more stably collect dust on the floor surface F.

[0036] (Regarding grounding means) In addition, in Fig. 6, if a grounding means such as a charge removal brush 63 shown by a dashed line is provided behind the first attraction rotor 60 from the dust box unit 40 to the floor surface F, charging of the handle portion 46 can be suppressed, which is good for usability. The grounding means may be disposed, for example, behind the first attraction rotor 60 in the moving direction Dr so as to contact the aluminum tape 8. In this way, it is more effective to ground the grounding means on the aluminum tape 8 on the floor surface F. Furthermore, by providing the grounding means in the dust box unit 40, it can be replaced periodically as a consumable item.

[0037] [Cleaning device in motion] 7(a) and (b) are top views illustrating the movement of the cleaning device 20 connected to the transport device 1. The luggage rack 14 is not shown for the sake of explanation. FIG. 7(a) shows the state when the transport device 1 is traveling straight. The width of the cleaning device 20 is configured to be equal to or less than the width of the transport device 1, and is a width that allows cleaning of the ruts 11. As a result, even if the width of the luggage rack 14 is close to the width of the transport device 1, it is possible to pass under the luggage rack 14 in a straight line, so it can be used. FIG. 7(b) is a diagram showing the state when the transport device 1 is turning (right turn). The cleaning device 20 turns around the connecting pin 22 due to friction with the floor surface F, and cleans dust by running on the ruts 11 outside the width of the transport device 1.

[0038] Fig. 8 is a diagram showing the transport device 1 transporting the luggage rack 14 in the state shown in Fig. 7(a). By connecting the cleaning device 20 having an electrostatic cleaning means to the transport device 1, it is possible to selectively collect only fine dust particles, so that even if the device is operated for a long time, a small dust box can be used, and the cleaning device 20 can be made smaller. In addition, compared to an adhesive roller, the adsorption rotating body cleans electrostatically, so it can be used repeatedly, there are fewer consumables, and the frequency of maintenance can be reduced.

[0039] In addition, even on floors F that are uneven due to scratches or tape, such as in manufacturing plants, the dust can be collected stably without peeling off the tape because the dust is electrostatically attracted. In addition, since no exhaust is generated, it is possible to stably clean for a long time while transporting luggage without stirring up dust. In addition, since the adhesion of the attraction rotor to the floor F is low compared to an adhesive roller and the attraction rotor can be sufficiently charged even when the rotation speed is reduced, it can be driven with low torque, and the driving means can be realized by the driven force due to the traction of the transport device 1 as in the first embodiment.

[0040] In addition, in the first embodiment, the first adsorptive rotator 60 and the second adsorptive rotator 61 are cylindrical, but are not limited to a cylindrical shape as long as they fulfill the same functions. For example, there is no problem with an endless belt shape. In addition, in the first embodiment, a manufacturing factory is described as an example. However, it is possible to develop a method for stable cleaning without stirring up dust for conveying devices used to transport luggage in public areas, such as for serving food in hospitals and restaurants.

[0041] As described above, according to the first embodiment, in a cleaning device connected to a transport device in a manufacturing plant or the like, it is possible to stably collect dust, and it is possible to realize a compact cleaning device with low power consumption and low maintenance. EXAMPLES

[0042] [Cleaning device of Example 2] The cleaning device 100 of the second embodiment will be described with reference to Fig. 9 to Fig. 13. The cleaning device 100 of the second embodiment is characterized by its flexibility in adapting to different baggage shapes due to its smaller device size while maintaining the cleaning performance of the first embodiment, and by its ease of connection to the front of the conveying device 1. Descriptions of the same parts as those of the first embodiment, such as the configuration of the electrostatic cleaning means, will be omitted.

[0043] The cleaning device 100 includes a motor 113 (see FIG. 11) as a first drive means (drive means) that drives the rotation of the first attractive rotor 60. The cleaning device 100 also includes a movable plate 130 as a movement means that moves the first attractive rotor 60 and the second attractive rotor 61 in the width direction perpendicular to the movement direction Dr, and a motor 132 as a second drive means that drives the movable plate 130 (see FIG. 10). Furthermore, the attachment 120 functions as an adjustment means that adjusts the positions of the first attractive rotor 60 and the second attractive rotor 61 in the direction perpendicular to the traveling surface, i.e., in the up-down direction (see FIG. 9).

[0044] 9(a) is a rear perspective view of the transport device 1, and the cleaning device 100 is connected via an attachment 120 so as to be movable in the direction of the arrow 101 (width direction). The cleaning device 100 is configured to electrostatically collect dust and does not have a strong adhesive force to the floor surface F as in the adhesive tape method, so it is also movable in the direction of the arrow 101. Also, the dust box unit 40 is configured to be detachable from the frame 105 (see FIG. 11) in the same manner as in the first embodiment. The cleaning device 100 of the second embodiment does not have the tires 23 and casters 24 as the cleaning device 20 of the first embodiment.

[0045] FIG. 9(b) is a partial side view. Unlike the first embodiment, the cleaning device 100 is regulated in the position of the first attraction rotator 60 relative to the floor surface F by the attachment 120. Therefore, the attachment 120 is fixed to the conveying device 1 so that the position adjustment in the direction of the arrow 102 shown in FIG. 9(b) can be adjusted at the mounting position of the attachment 120. As a result, for example, when the floor surface F is uneven, the downward movement in the direction of the arrow 102 is increased so that the first attraction rotator 60 is inserted deeper into the floor surface F. Also, for example, when the floor surface F is not very dirty, the downward movement in the direction of the arrow 102 is reduced so that the first attraction rotator 60 is inserted shallower into the floor surface F. For the position adjustment in the direction of the arrow 102, a height adjustment screw (not shown) or a means for automatically operating by detecting the distance from the cleaning surface may be provided. The cleaning device 100 has a control board 112 as a control means, and the control board 112 receives information read by the RFID sensor 7 of the conveying device 1 from the conveying device 1 and controls the operation of the cleaning device 100 based on the received information.

[0046] Fig. 10(a) is a diagram in which the attachment cover 121, control board 112, wireless device, and other cables shown in Fig. 9(a) are not shown. Inside are a movable plate 130, a motor 132, and a spiral shaft 131, and the forward and reverse rotation of the motor 132 rotates the spiral shaft 131, thereby making it possible to move the movable plate 130 in the direction of the arrow 101 (width direction). Fig. 10(b) is a diagram of the attachment 120 seen from below, with the movable plate 130 described in Fig. 10(a) extending downward. Also included are a magnet 133, an interlock switch 134, and a drawer connector 135. The movement in the direction of the arrow 102 shown in Fig. 9(b) may be achieved by a means for moving the movable plate 130 up and down.

[0047] FIG. 11(a) is a perspective view of the cleaning device 100, and FIG. 11(b) illustrates a state in which the dust box unit 40 is removed. The frame 105 has a drawer connector 106 and a magnet surface 107, and the gear boxes 110 and 111 have small motors 113, which receive and transmit power and control information from the drawer connector 106. The gear boxes 110 and 111 also have a gear transmission mechanism (not shown) built in, which transmits drive to the output shaft 32. The cleaning device 100 is connected to the conveying device 1 via the attachment 120 by the magnet surface 107 being attracted to the magnet 133 in FIG. 10(b). When an external force of a predetermined value or more is generated on the cleaning device 100, the magnet 133 is detached from the magnet surface 107, and the cleaning device 100 can be released. The control board 12 of the conveying device 1 is configured to be able to detect whether the cleaning device 100 is connected or not by an interlock switch 134.

[0048] In the second embodiment, the frame 105 is configured to be releasable from the attachment 120. This is because the cleaning device 100 is driven continuously for a long period of time, and a release portion is determined so that when the motor 113 of the gear box 110 in FIG. 11(b) wears out, it can be easily replaced for service. The motor 113 drives the rotation of the first adsorptive rotor 60. The control board 112 also controls the motor 113, so in the second embodiment, the rotation speed and forward and reverse rotation of the motor 113 can also be controlled by the control board 112.

[0049] [Cleaning device in motion] 12(a) and 12(b) are top views illustrating the movement of the cleaning device 100 connected to the transport device 1. The luggage rack 14 is not shown for the sake of explanation. FIG. 12(a) shows the state when the transport device 1 is traveling straight. The width of the cleaning device 100 is configured to be equal to or smaller than the width of the transport device 1, and is a width that allows cleaning of the ruts 11. This makes it possible to use the cleaning device 100 even if the width of the luggage rack 14 is configured to be close to the width of the transport device 1. FIG. 12(b) shows the state when the transport device 1 is turning. The cleaning device 100 can move in the direction of the arrow 101 by the attachment 120 described in FIG. 10(a) so as to run on the ruts 11 by protruding outward from the width of the transport device 1.

[0050] In addition, the cleaning device 100 can receive information such as the presence or absence of the luggage rack 14, the presence or absence of the turning of the transport device 1, and the position information of the rut 11 associated with the turning radius from the transport device 1 by wireless means mounted on the attachment 120 of the cleaning device 100. Therefore, the cleaning position in the direction of the arrow 101 can be controlled in detail. For example, as shown in FIG. 13, in order to prevent the cleaning device 100 from hitting the legs 16 while transporting the luggage rack 14, it is possible to stop the movement in the direction of the arrow 101 even when the transport device 1 is turning. In addition, multiple transport devices 1 can cooperate with each other to flexibly respond to the sharing control of the cleaning range. Note that since multiple transport devices 1 travel on a predetermined track, there may be cases where the travel routes overlap in part. Therefore, the floor surface F can be efficiently cleaned without connecting the cleaning device to all the transport devices. Note that, in order to more simply connect to the transport device 1, it is desirable to complete the control within the cleaning device 100. For example, the cleaning device 100 may be provided with its own detection sensors to detect information such as the presence or absence of the luggage rack 14, the transport speed, and the turning radius.

[0051] In the second embodiment, since the gear box 110 in FIG. 11(b) is equipped with a small motor 113, the rotation speed can be arbitrarily changed according to the degree of dirt on the floor surface F and the traveling state of the transport device 1, and power consumption can be optimized. In the second embodiment, the cleaning device 100 is further miniaturized by supplying power from a small battery 13 (see FIG. 2) of the transport device 1 via the attachment 120. Note that the cleaning device 100 can also reversely rotate the first adsorptive rotator 60 by the motor 113. Therefore, for dust that is large in size and cannot be electrostatically collected, it is also possible to release the large dust backward by rotating the first adsorptive rotator 60 backward at a predetermined timing during transport. The reason for releasing the large dust backward is that if dust that is large in size and cannot be collected or electrostatically collected is retained between the first adsorptive rotator 60 and the floor surface F, the cleaning efficiency of the cleaning device 100 may decrease.

[0052] As a method of releasing dust of a size that cannot be collected, for example, in Fig. 12(a), an angle may be provided between the axle line 160 of the drive tire 3 (not shown in Fig. 12) and the axis line 161 of the first attraction rotor 60 (not shown in Fig. 12). By providing an inclination of the axis line 161 with respect to the axle line 160, dust that could not be collected moves rearward along the inclined first attraction rotor 60, making it easier to release the dust. Furthermore, a mesh-shaped dust drop area may be provided in part of the floor surface F on which the conveying device 1 travels, and the dust may be dropped during conveyance.

[0053] In addition, in the second embodiment, the tires 23 and casters 24 do not contact the floor surface F, so the floor is not soiled with dirt or the like attached to the tires. Furthermore, the conveyance device 1 of the second embodiment can turn with a smaller radius without increasing the size of the device. Furthermore, the cleaning device 20 can be attached to the front and / or rear of the conveyance device 1 in the moving direction Dr.

[0054] As described above, according to the second embodiment, in a cleaning device connected to a transport device in a manufacturing plant or the like, it is possible to stably collect dust, and it is possible to realize a compact cleaning device with low power consumption and low maintenance. EXAMPLES

[0055] [Cleaning device of Example 3] Next, a third embodiment will be described with reference to Figures 14 to 16. As shown in Figure 14(a), cleaning device 200 is divided into two, cleaning device 201 and cleaning device 202, behind conveyor device 1, and each is configured to be independently movable in the direction of arrow 203, thereby achieving further miniaturization, torque reduction, and optimization of cleaning position. Explanations of the same points as in the other embodiments, such as the configuration of the electrostatic cleaning means, will be omitted.

[0056] The cleaning device 201 has a rotor similar to the first attraction rotor 60 and a rotor similar to the second attraction rotor 61 (corresponding to the first attraction means), and a blade similar to the urethane blade 62, but they are not separated into two at the center as in the first embodiment. Similarly, the cleaning device 202 has a rotor similar to the first attraction rotor 60 and a rotor similar to the second attraction rotor 61 (corresponding to the second attraction means), and a blade similar to the urethane blade 62, but they are not separated into two at the center as in the first embodiment. The cleaning device 201 is provided on one end side from the center in the width direction, and the cleaning device 202 is provided on the other end side from the center in the width direction. That is, the two cleaning devices 201 and 202 are arranged side by side in a direction perpendicular to the moving direction Dr.

[0057] Moreover, the attachment 220 of the third embodiment has a movable plate (first moving means) corresponding to the movable plate 130 that moves the cleaning device 201 in the width direction, and a motor (first driving means) corresponding to the motor 132. Moreover, the attachment 220 of the third embodiment has a movable plate (second moving means) corresponding to the movable plate 130 that moves the cleaning device 202 in the width direction, and a motor (second driving means) corresponding to the motor 132. Here, the sum of the length in the width direction of the cleaning device 201 and the length in the width direction of the cleaning device 202 is equal to or less than the length in the width direction of the conveying device 1. The cleaning devices 201 and 202 are attached to the front and / or rear of the conveying device 1 in the moving direction Dr. Furthermore, a control board similar to the control board 112 of the second embodiment is also provided in the third embodiment, and the operation of the cleaning devices 201 and 202 is controlled based on information read by the RFID sensor 7 of the conveying device 1.

[0058] [Cleaning device in motion] 15(a) and 15(b) are top views illustrating the movement of the cleaning device 200 connected to the transport device 1. The luggage rack 14 is removed for the purpose of explanation. FIG. 15(a) shows the state when the transport device 1 is traveling straight ahead. The width of the cleaning devices 201 and 202 is configured to be equal to or less than the width of the transport device 1, and the cleaning width of each of the cleaning devices 201 and 202 is optimized by narrowing it to a width that can clean the ruts 11 at a minimum. This allows further torque reduction by the two motors described above, thereby enabling further power saving. FIG. 15(b) is a diagram showing an example of a state during turning. The attachment 220 has two independent sets of movement mechanism members in the direction of the arrow 101 described in FIG. 10(a) of the second embodiment built in. Therefore, compared to the second embodiment, as shown in FIG. 15(b), the cleaning devices 201 and 202 can move independently in the direction of the arrow 203. Therefore, more optimized movement is possible, and as shown in the figure, the first attraction rotors (not shown) of the cleaning devices 201, 202 can be moved to positions where the two wheels 11 can be appropriately cleaned when rotating.

[0059] Next, Fig. 16(a) and (b) are diagrams for explaining a situation in which only the conveying device 1 rotates under the luggage rack 14. Fig. 16(a) shows a state in which the widthwise positions of the cleaning devices 201 and 202 are moved to the inside of the arrow 203 compared to Fig. 14(a). Fig. 16(b) is a view of the cleaning device 200 viewed from the bottom. The cleaning devices 201 and 202 are moved to the state shown in Fig. 16(a) to make them smaller. As a result, when the conveying device 1 rotates as shown by the arrow 205 in Fig. 16(b), the cleaning devices 201 and 202 are located inside the imaginary circle 204 connecting the legs 16 of the luggage rack 14, so that contact with the legs 16 can be prevented. The configuration of the third embodiment makes it possible to accommodate even smaller luggage racks 14.

[0060] In addition, since cleaning device 201 and cleaning device 202 can move independently, the cleaning range can be optimized. Note that, like in Example 2, cleaning device 201 and cleaning device 202 are illustrated parallel to a line (not shown) connecting the axles in Example 3, but this is not essential, and they may be, for example, in a V-shape as shown in Fig. 14(b) or an inverted V-shape as shown in Fig. 14(c).

[0061] Here, when the cleaning devices 201 and 202 are arranged in a V-shape or an inverted V-shape with respect to the transport device 1, the rotation axis of the rotor corresponding to the first attraction rotor 60 has an inclination with respect to the width direction of the transport device 1. Therefore, the dirt that cannot be collected by the cleaning device 201 or the cleaning device 202 due to electrostatic force does not remain in the cleaning device 201 or the cleaning device 202, but can be released by the diagonal movement.

[0062] As described above, according to the third embodiment, in a cleaning device connected to a transport device in a manufacturing plant or the like, it is possible to stably collect dust, and it is possible to realize a compact cleaning device with low power consumption and low maintenance. EXAMPLES

[0063] [Cleaning device] Next, a fourth embodiment will be described with reference to Figs. 17 to 19. Descriptions of the same parts as in the other embodiments, such as the configuration of the electrostatic cleaning means, will be omitted. The conveying device 1 has at least one pair of driving tires 3, which are arranged symmetrically with respect to the center in the width direction. In the third embodiment, the first attraction rotor 60 and the second attraction rotor 61 are incorporated in the conveying device 1 so as to face the driving tires 3, on the front or rear side of the driving tires 3 in the moving direction Dr.

[0064] FIG. 17(a) shows the cleaning device 300 disposed in the transport device 1 behind the driving tire 3 of the transport device 1. FIG. 17(b) is a perspective view of the cleaning device 300 mounted on the transport device 1 from the bottom, in which the cleaning device 300 is independent and configured with a minimum width at a position straddling the driving tire 3 as in the third embodiment. By disposing the cleaning device 300 in this position, the ruts 11 on the floor surface F can be reliably cleaned regardless of the turning radius of the transport device 1. Therefore, there is no need to control the movement of the cleaning device 300 in the width direction, and the configuration is simple. In addition, if the cleaning device 300 is specialized only in cleaning the ruts 11, the cleaning width can be narrowed more precisely because it is close to the driving tire 3, and therefore power saving can be realized by lowering the torque.

[0065] As shown in Fig. 17(a), when dust is to be removed, the dust box unit 310 is attached or detached by moving the cleaning device 300 in the directions of the arrows 305 and 306. Fig. 18(a) shows one side of the dust box unit 310 of the cleaning device 300 moved in the direction of the arrow 305, and a handle part 315 is present.

[0066] FIG. 18(b) is a view of the cleaning device 300. A motor 323 is built in a gear box 308 of a frame 307, and a drive is output to an output shaft 309 via a gear transmission means. As in the other embodiments, a drive input shaft (not shown) exists in the dust box unit 310, and the drive is transmitted to a first attraction rotor 320 and a second attraction rotor 321 through a drive transmission gear (not shown) in a gear box 302. The frame 307 is configured with positioning bosses 313 and 314 and a rail 316, and the dust box unit 310 is inserted and removed along the rail 316, and is fixed by a magnet on a surface 322 when attached. From the viewpoint of maintenance, the cleaning device 300 is easily detachably connected to the transport device 1 with an attachment (not shown), and has a control board and wireless communication means (not shown) as in the other embodiments, and is powered by a small battery 13 of the transport device 1.

[0067] Next, FIG. 19 shows a partial cross-sectional view in the direction of the arrow 325 in FIG. 17(b). By arranging the air inlet hole 311 of the dust box unit 310 close to the surface of the driving tire 3 and bringing the second attraction rotor 321 close to the driving tire 3, it is possible to adsorb dust attached to the surface of the driving tire 3 and dust stirred up by the driving tire 3. The proximity distance varies depending on the device configuration, but is preferably approximately 10 mm or less. The air inlet hole 311 is also shown in the perspective view of FIG. 18 and is a hole that exposes the second attraction rotor 321. This makes it possible to reduce dust stirred up by the driving tire 3 of the conveying device 1. In addition, the brush surface of the first attraction rotor 320 may be brought into contact with the surface of the driving tire 3. By bringing the brush surface of the first attraction rotor 320 into contact with the surface of the driving tire 3, the cleaning ability of the surface of the driving tire 3 can be improved.

[0068] In the fourth embodiment, the motor 323 is provided as a driving means in the gear box 308. To simplify the configuration of the cleaning device 300, for example, as shown in FIG. 20, the output shaft 410 of the driving motor 4 of the transport device 1 and the gear box 308 may be connected by a flexible shaft 400 to transmit the driving force of the transport device 1 to the cleaning device 300. That is, the driving motor 4 of the transport device 1 may be used as a driving means for rotating the first attraction rotor 60. In this case, although the rotation of the first attraction rotor 60 cannot be controlled, the cleaning device 300 can be operated without being supplied with power from the small battery 13 (see FIG. 2) of the transport device 1, and the configuration is simpler. The flexible shaft is a general name for a method in which a wire is passed through a tube filled with grease to transmit a rotational force from one end to the other end, and allows flexible transmission even if the transmission path is bent along the way. In addition, in the fourth embodiment, the cleaning device 300 is attached behind the driving tire 3, but it can also be attached in front of the driving tire 3 if space is available. In this case, the components in the cleaning device 300 should be arranged symmetrically to the arrangement in Fig. 19 with respect to the driving tire 3, and the cleaning device 300 should be provided forward in the moving direction Dr.

[0069] As described above, according to the fourth embodiment, in a cleaning device connected to a transport device in a manufacturing plant or the like, it is possible to stably collect dust, and it is possible to realize a compact cleaning device with low power consumption and low maintenance.

[0070] In the above embodiment, the rotors are charged by friction between the first attractive rotor 60 and the second attractive rotor 61, but this is not limiting. As a charging means, a charging voltage may be applied to the cleaning device from a power source (small battery 13) included in the transport device 1 via the drawer connector 135, thereby charging the first attractive rotor 60.

[0071] The disclosure of this embodiment includes the following configuration. (Configuration 1) A cleaning device for cleaning dust on a running surface of a conveying device, comprising: a connection means for connecting the cleaning device to the transport device; an adsorption means having a first rotating body provided opposite to the traveling surface and adapted to electrostatically adsorb the dust while rotating during traveling; charging means for charging the attraction means; A dust removing means for removing the dust; a storage unit that stores the dust removed by the removing unit; A cleaning device comprising: (Configuration 2) The above-mentioned cleaning device, characterized in that the suction means has a second rotating body that contacts the first rotating body and rotates in response to the rotation of the first rotating body to collect the dust adsorbed to the first rotating body. (Configuration 3) The cleaning device as described above, wherein the suction means is inclined with respect to a direction of movement of the cleaning device. (Configuration 4) The cleaning device as described above, wherein the potential difference between the dust and the second rotating body is greater than the potential difference between the dust and the first rotating body. (Configuration 5) The cleaning device as described above, wherein the charging means charges the attraction means by friction between the first rotating body and the second rotating body. (Configuration 6) The transport device has a power source. The cleaning device as described above, wherein the charging means charges the attracting means by applying a voltage from the power source to the attracting means. (Configuration 7) The above-mentioned cleaning device, wherein the second rotating body electrostatically collects dust in the air. (Configuration 8) The conveying device includes at least one pair of wheels arranged in a width direction perpendicular to a moving direction, The cleaning device as described above, wherein the adsorption means electrostatically adsorbs dust on a path traveled by each of the wheels on the traveling surface. (Configuration 9) A pair of wheels is provided forward of the suction means in a moving direction, the pair of wheels being provided in a width direction perpendicular to the moving direction; A transmission means for transmitting rotation of the set of wheels to the first rotating body; Equipped with The above-mentioned cleaning device, wherein the first rotating body is rotated by the rotational force of the set of wheels moving in the movement direction transmitted via the transmission means. (Configuration 10) the conveying device has a magnetic connection means at a rear end in the moving direction, The above-mentioned cleaning device, wherein the connecting means is magnetically connected to the connected means at a front end in a moving direction. (Configuration 11) a rotation axis between the connecting means and the pair of wheels, the rotation axis being perpendicular to the running surface; a surface intersecting the rotation axis; Equipped with The cleaning device as described above, wherein the suction means rotates about the rotation axis in accordance with the turning movement of the transport device. (Configuration 12) The cleaning device as described above, wherein at least two of the suction means are provided in a width direction perpendicular to the moving direction. (Configuration 13) The device includes two of the adsorption means, The above-mentioned cleaning device, wherein the two suction means are arranged in a V-shape. (Configuration 14) an intake port through which air flows in to collect dust in the air; an exhaust port through which the air flowing in from the intake port flows out; The cleaning device as described above, characterized in that it comprises: (Configuration 15) The above-mentioned cleaning device, wherein the suction means has an outer diameter at an end portion larger than an outer diameter at a central portion in a width direction perpendicular to the moving means. (Configuration 16) The above-mentioned cleaning device further comprises a driving means for driving the rotation of the first rotating body. (Configuration 17) When the driving means is a first driving means, a moving means for moving the suction means in a width direction perpendicular to a moving direction of the conveying device; A second driving means for driving the moving means; The cleaning device as described above, characterized in that it comprises: (Configuration 18) The above-mentioned cleaning device further comprises an adjustment means for adjusting the position of the suction means in a direction perpendicular to the traveling surface. (Configuration 19) the suction means includes a first suction means provided on one end side of the center in a width direction perpendicular to the moving direction, and a second suction means provided on the other end side of the center, a first moving means for moving the first suction means in the width direction; a first driving means for driving the first moving means; A second moving means for moving the second suction means in the width direction; a second driving means for driving the second moving means; Equipped with The above-mentioned cleaning device, characterized in that the sum of the length of the first suction means in the width direction and the length of the second suction means in the width direction is less than or equal to the length of the conveying device in the width direction. (Configuration 20) The cleaning device as described above, characterized in that the cleaning device is mounted in front of and / or behind the conveying device in the direction of movement. (Configuration 21) The conveying device has at least one pair of wheels provided in a width direction perpendicular to a moving direction, The above-mentioned cleaning device, characterized in that the suction means is incorporated into the conveying device ahead of or behind the set of wheels in the direction of movement so that the second rotating body faces the wheels. (Configuration 22) The above-mentioned cleaning device further comprises a driving means for rotating the first rotating body. (Configuration 23) The above-mentioned cleaning apparatus, wherein the transport device has a driving means for rotating the first rotating body. (Configuration 24) A memory member that stores information regarding a position is attached to the travel surface, the transport device has a reading unit that reads the information from the storage member, The cleaning device as described above, further comprising a control unit that controls an operation of the cleaning device based on the information read by the reading unit. (Configuration 25) The above-mentioned cleaning device, wherein the removing means is a blade abutting on the surface of the second rotating body. [Explanation of symbols]

[0072] 1. Transport device 20 Cleaning equipment 21 Attachment 60 First adsorption rotor 62 Urethane Blade 69 Dust Box Area

Claims

1. A cleaning device for cleaning dust on a running surface of a conveying device, comprising: a connection means for connecting the cleaning device to the transport device; an attracting means having a first rotating body provided opposite to the traveling surface and which electrostatically attracts the dust while rotating during traveling; charging means for charging the attraction means; a dust removing unit for removing the dust from the first rotating body; a storage unit that stores the dust removed by the removing unit; A cleaning device comprising:

2. 2. The cleaning device according to claim 1, wherein the suction means includes a second rotating body that contacts the first rotating body and rotates in response to the rotation of the first rotating body to collect the dust attracted to the first rotating body.

3. 2. The cleaning device according to claim 1, wherein the suction means is inclined with respect to a direction of movement of the cleaning device.

4. 3. The cleaning device according to claim 2, wherein a potential difference between the dust and the second rotating body is greater than a potential difference between the dust and the first rotating body.

5. 3. The cleaning device according to claim 2, wherein the charging means charges the attracting means by friction between the first rotating body and the second rotating body.

6. The transport device has a power source; 2. The cleaning device according to claim 1, wherein the charging means charges the attracting means by applying a voltage from the power source to the attracting means.

7. 3. The cleaning device according to claim 2, wherein the second rotating body electrostatically collects dust in the air.

8. The conveying device includes at least one set of wheels provided in a width direction perpendicular to a moving direction, 2. The cleaning device according to claim 1, wherein the attracting means electrostatically attracts dust on a path traveled by each of the wheels on the traveling surface.

9. A set of wheels is provided forward of the suction means in a moving direction, the set of wheels being provided in a width direction perpendicular to the moving direction; A transmission means for transmitting rotation of the set of wheels to the first rotating body; Equipped with 2. The cleaning device according to claim 1, wherein the first rotating body is rotated by a torque of the set of wheels moving in the moving direction transmitted through the transmission means.

10. the conveying device has a magnetic connection means at a rear end in the moving direction, 10. The cleaning device according to claim 9, wherein the connecting means magnetically connects to the connected means at a front end in the moving direction.

11. a rotation axis between the connecting means and the set of wheels, the rotation axis being perpendicular to the running surface; a surface intersecting the rotation axis; Equipped with 11. The cleaning device according to claim 10, wherein the suction means rotates about the rotation shaft in response to the rotating movement of the transport device.

12. 2. The cleaning device according to claim 1, wherein at least two of the suction means are provided in a width direction perpendicular to the moving direction.

13. The device includes two of the adsorption means, 13. The cleaning device according to claim 12, wherein the two suction means are arranged in a V-shape.

14. an intake port through which air flows in to collect dust in the air; an exhaust port through which the air flowing in from the intake port flows out; 2. The cleaning device according to claim 1, further comprising:

15. 2. The cleaning device according to claim 1, wherein the suction means has an outer diameter greater at its end portions than at its central portion in a width direction perpendicular to the moving means.

16. 2. The cleaning device according to claim 1, further comprising a driving means for driving the rotation of the first rotating body.

17. When the driving means is a first driving means, a moving means for moving the suction means in a width direction perpendicular to a moving direction of the conveying device; A second driving means for driving the moving means; 17. The cleaning device of claim 16, further comprising:

18. 17. The cleaning device according to claim 16, further comprising an adjustment means for adjusting a position of the suction means in a direction perpendicular to the traveling surface.

19. the suction means includes a first suction means provided on one end side of the center in a width direction perpendicular to the moving direction, and a second suction means provided on the other end side of the center, a first moving means for moving the first suction means in the width direction; a first driving means for driving the first moving means; A second moving means for moving the second suction means in the width direction; second driving means for driving the second moving means; Equipped with 2. The cleaning device according to claim 1, wherein a sum of a length of the first suction means in the width direction and a length of the second suction means in the width direction is equal to or less than a length of the transport device in the width direction.

20. 20. A cleaning device according to any one of claims 16 to 19, characterized in that the cleaning device is mounted in front of and / or behind the transport device in the direction of movement.

21. The conveying device has at least one set of wheels provided in a width direction perpendicular to a moving direction, The cleaning device according to claim 2 , wherein the suction means is incorporated into the transport device in front of or behind the set of wheels in the direction of movement, and the second rotating body faces the wheels.

22. 22. The cleaning device according to claim 21, further comprising a drive means for rotating the first rotating body.

23. 22. The cleaning apparatus according to claim 21, wherein the transport device has a drive means for rotating the first rotating body.

24. A memory member that stores information regarding a position is attached to the travel surface, the transport device has a reading unit that reads the information from the storage member, 20. The cleaning device according to claim 17, further comprising a control unit that controls an operation of the cleaning device based on the information read by the reading unit.

25. 3. The cleaning device according to claim 2, wherein the removing means is a blade abutting on a surface of the second rotating body.

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