Cleaning system

Abstract

The present invention provides a cleaning system. In the case of performing the processing of dust collected by a cleaning vehicle, the burden of the operator is reduced. The cleaning system is provided with a cleaning vehicle (1) that travels along a prescribed travel path (R) to perform cleaning of the travel path (R), and a maintenance device (2) that is provided at a maintenance stop position (A) set on the travel path (R). The cleaning vehicle (1) is provided with a suction portion (14) that suctions dust of the travel path (R), a storage portion that stores the suctioned dust, and a discharge portion (16) that discharges the dust stored in the storage portion to the outside. The maintenance device (2) is provided with a dust collecting portion (214) that collects the dust discharged from the storage portion to the outside by the discharge portion (16) of the cleaning vehicle (1) stopped at the maintenance stop position (A).

Description

Technical Field

[0001] The present invention relates to a sweeping system, which includes a sweeping vehicle that travels along a predetermined travel path to sweep the aforementioned travel path. Background Technology

[0002] An example of such a cleaning system is disclosed in Japanese Patent Application Publication No. 2019-73349 (Patent Document 1). Hereinafter, the reference numerals enclosed in parentheses in the background description are those of Patent Document 1.

[0003] In the technology disclosed in Patent Document 1, the sweeper (3) traveling along the travel path (R) is equipped with a sweeping unit (34). Moreover, the sweeper (3) uses the sweeping unit (34) to suck up the dust along the travel path (R) while traveling along the travel path (R). Summary of the Invention

[0004] The problem that the invention aims to solve

[0005] Incidentally, Patent Document 1 does not specifically describe the handling of dust sucked up by the sweeping unit (34). For example, the handling of the sucked-up dust could be considered by removing the sweeper (3) containing the dust from the travel path (R) and having the operator handle it at a location different from the travel path (R). However, in this case, the operator would incur a workload corresponding to the handling of the dust.

[0006] In view of the above situation, there is a need for a technology that can reduce the burden on operators when dealing with dust collected by sweepers.

[0007] Methods used to solve problems

[0008] The cleaning system disclosed herein includes: a sweeper vehicle that travels along a predetermined travel path to clean the aforementioned travel path; and a maintenance device installed at a maintenance stop position set at the aforementioned travel path; the sweeper vehicle includes a suction unit for sucking up dust from the aforementioned travel path, a storage unit for storing the sucked-up dust, and a discharge unit for discharging the dust stored in the aforementioned storage unit to the outside; the maintenance device includes a dust collection unit that collects the dust discharged from the aforementioned storage unit to the outside by the discharge unit of the aforementioned sweeper vehicle stopped at the aforementioned maintenance stop position.

[0009] According to this structure, the sweeper can suck up dust along its travel path and then drive itself to a maintenance stop position, where it discharges the dust accumulated in the storage compartment to the outside. The dust discharged from the sweeper can then be automatically collected by the dust collection unit of the maintenance equipment. Thus, according to this structure, the dust collected by the sweeper can be processed automatically. Therefore, the workload of the operator is reduced when processing the dust collected by the sweeper.

[0010] Further features and advantages of the technology disclosed herein will become clearer from the following illustrative and non-limiting description of embodiments with reference to the accompanying drawings. Attached Figure Description

[0011] Figure 1 This is an overall top view of a material conveying system equipped with a cleaning system.

[0012] Figure 2 This is a side view of the sweeper and the conveyor.

[0013] Figure 3 This is an explanatory diagram showing the state of a sweeper pumping out dust.

[0014] Figure 4 This is an explanatory diagram showing the dust discharge process of a sweeper.

[0015] Figure 5 This is a side view of the area near the maintenance equipment.

[0016] Figure 6 This is a perspective view showing a maintenance device equipped with a cleaning section and a dust collection section.

[0017] Figure 7 This is a control block diagram of a material conveying device equipped with a cleaning system.

[0018] Figure 8 This is the main view showing the status of dust collection by the maintenance equipment.

[0019] Figure 9 This is a flowchart illustrating the dust handling process performed by the cleaning system. Detailed Implementation

[0020] A cleaning system is a system that performs cleaning along a prescribed travel path and handles the cleaning process afterwards. The following example illustrates the application of a cleaning system to a goods conveying device, and explains how to implement such a system.

[0021] [Brief Structure of the Goods Conveying Equipment]

[0022] like Figure 1 and Figure 2As shown, the goods conveying equipment includes: a conveyor 3 for conveying goods 8; a pair of tracks Ra, arranged near the roof of the equipment, forming the travel path R of the conveyor 3; and a transfer object part 9 for transferring goods 8 between itself and the conveyor 3. That is, in this example, the goods conveying equipment is configured as a roof conveying equipment for conveying goods 8 near the roof.

[0023] At the transfer object section 9, there is a processing device 91 for processing the article 8, and a support platform 92 arranged adjacent to the processing device 91 and supporting the article 8. In this embodiment, the transport vehicle 3 transports the article 8 to the support platform 92 before it is processed by the processing device 91, and transports the article 8 from the support platform 92 to a designated transport destination after it has been processed by the processing device 91. For example, the article 8 is a container that houses the processing object that is to be processed by the processing device 91. The "processing of the article 8" mentioned above refers to the processing of the processing object housed in the article 8. The article 8 can be either a wafer storage container (so-called FOUP: Front Opening Unified Pod) that houses wafers, or a reticle pod that houses reticles. When the article 8 is a FOUP, the processing object is a wafer. When the article 8 is a reticle pod, the processing object is a reticle.

[0024] like Figure 2 As shown, the transport vehicle 3 includes a transport vehicle control device C3 for controlling the transport vehicle 3, a travel mechanism 30 for traveling along the travel path R, and a transfer mechanism 31 for transferring the items 8. In the illustrated example, the transport vehicle 3 includes a cover 32 that surrounds the transfer mechanism 31, and a connecting part 33 that connects the transfer mechanism 31 and the cover 32 relative to the travel mechanism 30. The travel mechanism 30 is disposed on the upper side of the track Ra. The transfer mechanism 31 and the cover 32 are connected to the travel mechanism 30 via the connecting part 33 and are disposed on the lower side of the track Ra. The travel mechanism 30 and the transfer mechanism 31 are controlled by the transport vehicle control device C3.

[0025] The traveling mechanism 30 has a plurality of traveling wheels 30A that roll on the track Ra. In this example, the plurality of traveling wheels 30A are separately arranged on the left, right and front and rear of the traveling mechanism 30, and the traveling mechanism 30 has a total of four traveling wheels 30A. At least one of the plurality of traveling wheels 30A is driven by a traveling motor (not shown) to provide propulsion for the transport vehicle 3 to travel along the travel path R.

[0026] Let the direction in which the transport vehicle 3 travels along the travel path R be the travel direction X, and let the direction orthogonal to the travel direction X in a top view be the width direction Y. The cover 32 is configured to cover the transfer mechanism 31 from both sides and the top side of the travel direction X. The two sides of the transfer mechanism 31 in the width direction Y are made into openings and are not covered by the cover 32.

[0027] The transfer mechanism 31 transfers the article 8 between the cover 32 and the transfer target part 9. Detailed descriptions are omitted, but the transfer mechanism 31 typically includes, for example, a gripping part for holding the article 8 and a lifting part for raising and lowering the article 8 between it and a support platform 92 (transfer target part 9) located below the track Ra. Furthermore, the transfer mechanism 31 may, depending on the needs, include a rotating part for changing the posture of the article 8 to an appropriate posture corresponding to the transfer target part 9, and a sliding part for sliding the article 8 from the cover 32 outwards in the width direction Y. However, the transfer mechanism 31 is not limited to the structure described above, as long as it possesses the necessary structure for transferring the article 8 between itself and the transfer target part 9.

[0028] [Cleaning System]

[0029] The cleaning system described in this embodiment is equipped on the aforementioned article conveying equipment. For example... Figure 1 As shown, the cleaning system includes a sweeper 1 that travels along a prescribed travel path R to clean the travel path R, and a maintenance device 2 that is installed at a maintenance stop position A set at the travel path R.

[0030] In this embodiment, the travel path R of the object to be cleaned by the sweeper 1 is designated as the travel path R of the conveyor 3. In other words, the sweeper 1 and the conveyor 3 are configured to travel on the same travel path R. In this example, the travel path R is composed of a pair of tracks Ra arranged apart in the width direction Y. The pair of tracks Ra are set at a position extending upwards from the floor surface of the equipment, for example, and are suspended from the ceiling. In this embodiment, the sweeper 1 cleans the dust adhering to the tracks Ra. The dust is generated by the operation of various devices within the equipment, such as by the wear of the travel wheels 30A of the conveyor 3 as it travels on the tracks Ra.

[0031] [Sweeper]

[0032] The following is mainly based on Figures 2-4 The structure of the sweeper 1 will be explained.

[0033] like Figure 2As shown, the sweeper 1 includes a sweeper control device C1 for controlling the sweeper 1. In this embodiment, the sweeper 1 includes a travel mechanism 10 for traveling along a travel path R, a main body 11, a cover 12 covering the main body 11, and a connecting part 13 connecting the main body 11 and the cover 12 relative to the travel mechanism 10. The travel mechanism 10 is disposed on the upper side of the track Ra. The main body 11 and the cover 12 are connected to the travel mechanism 10 via the connecting part 13 and are disposed on the lower side of the track Ra. The travel mechanism 10 is controlled by the sweeper control device C1. In this embodiment, the sweeper control device C1 is equivalent to a "control unit".

[0034] The traveling mechanism 10 has a plurality of traveling wheels 10A that roll on the track Ra. In this example, the plurality of traveling wheels 10A are separately arranged on the left, right and front and rear of the traveling mechanism 10, and the traveling mechanism 10 has a total of four traveling wheels 10A. At least one of the plurality of traveling wheels 10A is driven by a traveling motor (not shown) to provide propulsion for the sweeper 1 to travel along the traveling path R.

[0035] Thus, the structure for the sweeper 1 to travel on the travel path R becomes substantially the same as the structure for the aforementioned transport vehicle 3 to travel on the travel path R.

[0036] In this embodiment, the cover 12 is arranged to cover the main body 11 from both sides and the top in the travel direction X. The two sides of the main body 11 in the width direction Y are made into openings and are not covered by the cover 12.

[0037] The sweeper 1 includes a suction unit 14 for sucking up dust along the travel path R, a storage unit 15 for storing the sucked-up dust, and a discharge unit 16 for discharging the dust stored in the storage unit 15 to the outside.

[0038] In this embodiment, the sweeper 1 includes a first pipe P1 with a suction port 141 for drawing in dust and a second pipe P2 with a discharge port 161 for discharging dust. Furthermore, in this example, a brush section 143 is provided adjacent to the suction port 141 on the upstream (front) side in the travel direction X to sweep away dust along the travel path R. This facilitates the lifting of dust adhering to the travel path R and its extraction from the suction port 141.

[0039] The suction port 141 opens towards the travel path R, more specifically, the opening is opposite to the dust accumulation area of ​​the track Ra (here, the upper surface of the track Ra). The brush portion 143 described above is configured to contact the dust accumulation area of ​​the track Ra, and is configured to slide on the dust accumulation area when the sweeper 1 travels. In this example, a portion of the first pipe P1 having the suction port 141 is disposed inside the cover portion 12. The suction port 141 is connected to the storage portion 15, and the dust sucked from the suction port 141 is stored in the storage portion 15 via the first pipe P1. In addition, in this example, the end of the first pipe P1 opposite to the suction port 141 opens towards the storage portion 15. Furthermore, detailed drawings are omitted, but in this example, the suction port 141 is provided corresponding to each of a pair of tracks Ra. In other words, the first pipe P1 becomes a branch pipe that branches off from the pair of tracks Ra, and has a pair of suction ports 141 that are respectively opposite to the pair of tracks Ra.

[0040] The outlet 161 faces the exterior of the sweeper 1, and more specifically, faces a space opening lower than the sweeper 1. A portion of the second pipe P2, having the outlet 161, is disposed inside the cover 12. In the illustrated example, the front end of the second pipe P2 protrudes downward from the cover 12. The outlet 161 is formed at the front end portion of the second pipe P2 that protrudes downward from the cover 12. The outlet 161 is connected to the storage section 15, and dust discharged from the storage section 15 is discharged to the exterior of the sweeper 1 via the second pipe P2 through the outlet 161. In this example, the second pipe P2 is connected to the first pipe P1, and a branch portion Pd is formed at the connection between the first pipe P1 and the second pipe P2. In other words, the end of the second pipe P2 opposite to the outlet 161 opens into the first pipe P1.

[0041] The storage section 15 is provided inside the main body section 11. In this embodiment, the sweeper 1 includes an airflow generating section G that generates airflow and a filter 142 that captures dust. Furthermore, the airflow generating section G and the filter 142 are provided inside the main body section 11. That is, in this example, the storage section 15, the filter 142, and the airflow generating section G are provided inside the main body section 11. Moreover, within the main body section 11, the storage section 15 and the airflow generating section G, along with the filter 142, are separately arranged on both sides.

[0042] In this embodiment, the airflow generating unit G is configured to generate a suction airflow Fi (refer to) that draws dust from the suction port 141. Figure 3 ) and the exhaust airflow Fo that discharges dust from exhaust port 161 (see reference) Figure 4 In this example, the airflow generating unit G is composed of a fan Ga and a driving unit Gb that drives the fan Ga.

[0043] In this embodiment, the airflow generating unit G generates an airflow in the vertical direction within the internal space of the main body 11. In this example, the fan Ga is arranged with its rotation axis in the vertical direction. Therefore, an airflow in the vertical direction can be generated within the internal space of the main body 11. In this embodiment, when the airflow generating unit G generates a suction airflow Fi, an airflow from top to bottom is generated within the internal space of the main body 11. Furthermore, when the airflow generating unit G generates a discharge airflow Fo, an airflow from bottom to top is generated within the internal space of the main body 11. Additionally, in this example, the storage unit 15, the filter 142, and the airflow generating unit G are arranged sequentially from top to bottom within the internal space of the main body 11.

[0044] like Figure 3 As shown, the airflow generating unit G generates a suction airflow Fi by rotating the fan Ga. The suction airflow Fi generated by the airflow generating unit G forms a suction flow path Wi connecting the suction port 141 to the airflow generating unit G. In this embodiment, the storage unit 15 and the filter 142 are disposed in the suction flow path Wi connecting the suction port 141 to the airflow generating unit G. Furthermore, the storage unit 15 is provided in the suction flow path Wi in a region closer to the suction port 141 than the filter 142. Therefore, when the airflow generating unit G generates the suction airflow Fi, dust drawn from the suction port 141 and flowing in the suction flow path Wi is captured by the filter 142. The dust captured by the filter 142 is stored in the storage unit 15, which is disposed upstream of the filter 142 in the suction flow path Wi.

[0045] like Figure 4 As shown, the airflow generating unit G generates an exhaust airflow Fo, which is an airflow in the opposite direction to the suction airflow Fi, by rotating the fan Ga in the opposite direction. The exhaust airflow Fo generated by the airflow generating unit G forms an exhaust flow path Wo that connects the outlet 161 to the airflow generating unit G. In this embodiment, the storage unit 15 and the filter 142 are disposed in the exhaust flow path Wo that connects the outlet 161 to the airflow generating unit G. Furthermore, the storage unit 15 is provided in the area of ​​the exhaust flow path Wo closer to the outlet 161 than the filter 142. Therefore, when the airflow generating unit G generates the exhaust airflow Fo, dust that is captured by the filter 142 during suction and stored in the storage unit 15 is stripped from the filter 142 and flows in the exhaust flow path Wo, and is discharged from the outlet 161 to the outside of the sweeper 1.

[0046] As described above, in this embodiment, the suction unit 14 includes a suction port 141 formed to open toward the travel path R and connected to the storage unit 15, an airflow generating unit G that generates a suction airflow Fi that draws dust from the suction port 141, and a filter 142. In other words, the suction port 141, the airflow generating unit G, and the filter 142 constitute a part of the suction unit 14. Moreover, the suction unit 14 draws dust accumulated on the track Ra from the suction port 141, captures it with the filter 142, and stores it in the storage unit 15 by generating a suction airflow Fi from the airflow generating unit G.

[0047] Furthermore, in this embodiment, the discharge section 16 includes an outlet 161 connected to the storage section 15 and an airflow generating section G shared with the suction section 14. In other words, the outlet 161 and the airflow generating section G constitute a part of the discharge section 16. Moreover, the discharge section 16 discharges dust captured by the filter 142 and stored in the storage section 15 from the outlet 161 by generating an exhaust airflow Fo, which is an airflow in the opposite direction to the airflow Fi generated by the airflow generating section G.

[0048] Here, as described above, the suction flow path Wi is a flow path connecting the airflow generating section G to the suction port 141, and the discharge flow path Wo is a flow path connecting the airflow generating section G to the discharge port 161. In this embodiment, the suction flow path Wi and the discharge flow path Wo partially overlap. Furthermore, the sweeper 1 includes a branch section Pd that branches the suction flow path Wi and the discharge flow path Wo. In this example, the suction flow path Wi includes a region within the interior space of the main body 11 that includes the entire area from the airflow generating section G to the filter 142 and the storage section 15, and the entire area of ​​the first piping P1. The discharge flow path Wo includes a region within the interior space of the main body 11 that includes the entire area from the airflow generating section G to the filter 142 and the storage section 15, a region within the first piping P1 from the connection portion to the storage section 15 to the branch section Pd, and the entire area of ​​the second piping P2.

[0049] In this embodiment, the sweeper 1 further includes a flow path switching mechanism 17 disposed at the branch Pd. The flow path switching mechanism 17 is configured to switch to a first state in which the suction port 141 is connected to the storage section 15 and the connection between the discharge port 161 and the storage section 15 is cut off (see reference). Figure 3 ), and a second state in which the connection between the suction port 141 and the storage section 15 is cut off and the discharge port 161 is connected to the storage section 15 (see reference). Figure 4 Detailed illustrations are omitted, but in this embodiment, the flow path switching mechanism 17 is configured as a solenoid valve having a solenoid section that converts electrical energy into mechanical motion and a valve section that opens and closes the flow path. Various known types can be used as the solenoid valve.

[0050] like Figure 3 As shown, the flow path switching mechanism 17 enters the first state, and the entire suction flow path Wi is connected. In this embodiment, the airflow generating unit G generates a suction airflow Fi in the first state of the flow path switching mechanism 17. As a result, dust accumulated on the track Ra is drawn from the suction port 141 and flows in the suction flow path Wi. The dust flowing in the suction flow path Wi is stored in the storage unit 15.

[0051] like Figure 4 As shown, the flow path switching mechanism 17 switches to the second state, and the entire discharge flow path Wo is connected. In this embodiment, the airflow generating unit G generates a discharge airflow Fo in the second state of the flow path switching mechanism 17. As a result, the dust stored in the storage unit 15 is stripped upward from the filter 142 and flows in the discharge flow path Wo. The dust that has flowed through the discharge flow path Wo is discharged from the outlet 161 to the outside of the sweeper 1.

[0052] In this embodiment, the sweeper 1 further includes a storage state detection unit 18, which detects the storage state of dust in the storage section 15. This allows the sweeper 1 to monitor the storage state of dust in the storage section 15. When the sweeper 1 needs to discharge dust from the storage section 15, the discharge unit 16 discharges the dust from the storage section 15.

[0053] In this embodiment, the storage state detection unit 18 is configured with a pressure sensor that detects the pressure in the internal space of the main body 11. Furthermore, by detecting the pressure in the internal space of the main body 11 using this pressure sensor, the storage state of dust in the storage unit 15 is detected. In this example, the storage state detection unit 18 is configured to detect the pressure of the suction flow path Wi during the generation of the suction airflow Fi on the side closer to the airflow generation section G of the filter 142, as a measure of the dust storage state. To explain, if more dust is stored in the storage unit 15, a large amount of dust adheres to the filter 142, making it difficult for the suction airflow Fi to pass through the filter 142, thus causing a pressure drop on the side closer to the airflow generation section G of the filter 142. The storage state detection unit 18 detects this pressure drop (pressure change) during the generation of the suction airflow Fi. On the side closer to the airflow generation section G of the filter 142, as the pressure decreases during the generation of the suction airflow Fi, the amount of dust adhering to the filter 142 increases, indicating that a large amount of dust is stored in the storage unit 15. In this embodiment, the sweeper control device C1 determines that a discharge state is required when the pressure detected by the storage state detection unit 18 is below a predetermined value. This predetermined value varies depending on the size of the space where the storage state detection unit 18, which acts as a pressure sensor, measures pressure, the suction force generated by the airflow generation unit G (pressure of the suction airflow Fi), the type of filter 142, and is determined through experiments, etc. Furthermore, various known types of pressure sensors can be used.

[0054] As described above, the sweeper 1 is configured to suck up and discharge dust. Figure 1 As shown, the sweeper 1 sucks up dust at any point along the travel path R, while the dust is discharged at a maintenance stop position A set at the travel path R. As described above, a maintenance device 2 is provided at the maintenance stop position A, which processes the dust collected by the sweeper 1.

[0055] [Equipment Maintenance]

[0056] The following is mainly based on Figure 1 , Figure 5 and Figure 6 The structure of maintenance equipment 2 will be described.

[0057] As described above, the maintenance device 2 is located at a maintenance stop position A set on the travel path R. In this embodiment, the maintenance stop position A is set on a path in the travel path R that is different from the transport path of the article 8 carried by the transport vehicle 3. This prevents the sweeper 1 and the transport vehicle 3, stopped at the maintenance stop position A, from obstructing the transport vehicle 3 traveling towards its destination. Furthermore, the maintenance device 2 is configured to perform maintenance not only on the sweeper 1 but also on the transport vehicle 3. When maintenance of the transport vehicle 3 is required, the transport vehicle 3 travels to the maintenance stop position A and can receive maintenance performed by the maintenance device 2.

[0058] like Figure 1 and Figure 5 As shown, the maintenance equipment 2 includes a maintenance device 21 and a housing 22 that surrounds the maintenance device 21. The maintenance equipment 2 performs maintenance on the sweeper 1 or the conveyor 3 inside the housing 22 via the maintenance device 21.

[0059] like Figure 5 As shown, the housing 22 includes an upper surface panel 22U covering the top of the maintenance device 21 and four side panels 22S covering the sides of the maintenance device 21. The side panel 22S that overlaps with the travel path R has an opening 221 through which the sweeper 1 or conveyor 3 traveling on the travel path R can pass. In this example, only one of the four side panels 22S has an opening 221.

[0060] In this embodiment, the maintenance device 2 includes a shutter 222 that can freely open and close an opening 221 formed in the side panel 22S of the housing 22. The shutter 222 includes a shutter body 222A that operates between a closed position where the opening 221 is closed and an open position where the opening 221 is open, and an opening and closing motor (not shown) that drives the shutter body 222A to open and close it. When the shutter body 222A is in the open position, the sweeper 1 or the transport vehicle 3 can enter the interior of the housing 22.

[0061] The maintenance device 21 is configured within the space enclosed by the housing 22. For example... Figure 6As shown, the maintenance device 21 includes a support body 211 that connects multiple frame members to form a frame shape, and a track body Rb supported by the support body 211 and guiding the sweeper 1 or the transport vehicle 3. The track body Rb is provided on the extension line of the track Ra and guides the sweeper 1 or the transport vehicle 3 traveling on the track Ra into the interior of the housing 22. In this embodiment, the track body Rb constitutes part of the travel path R, and a maintenance stop position A is provided on the track body Rb. Therefore, the travel wheels 10A of the sweeper 1 and the travel wheels 30A of the transport vehicle 3 can roll on the track body Rb. The sweeper 1 and the transport vehicle 3 can travel continuously from the track Ra on the track body Rb.

[0062] In this embodiment, the maintenance device 2 includes a cleaning unit 213, which cleans the sweeper 1 and the conveyor 3 at the maintenance stop position A. In this embodiment, the cleaning unit 213 is installed in the maintenance device 21. The cleaning unit 213 includes multiple nozzles 213a that spray air, configured to blow air onto the sweeper 1 or conveyor 3 (hereinafter referred to together as the "target vehicle") stopped at the maintenance stop position A. Thus, the cleaning unit 213 removes dust adhering to the target vehicle.

[0063] In this embodiment, the cleaning unit 213 includes a nozzle support 213b that supports a plurality of nozzles 213a. In this example, the nozzle support 213b is composed of a shaft-like member extending along the travel direction X, supporting a plurality of nozzles 213a arranged along the travel direction X. Each of the plurality of nozzles 213a is supported by the nozzle support 213b in an orientation in which its respective air outlet faces the target vehicle stopped at the maintenance stop position A. Furthermore, the nozzle support 213b is rotatably supported by a support body 211 about an axis along the travel direction X. The nozzle support 213b is driven by a rotation motor 213m (nozzle drive unit) to rotate about an axis along the travel direction X. By rotating the nozzle support 213b, each of the plurality of nozzles 213a supported by the nozzle support 213b blows air onto the target vehicle within a vertical range corresponding to the amount of rotation of the nozzle support 213b.

[0064] In this embodiment, the cleaning unit 213 includes a plurality of nozzle support portions 213b as described above. The plurality of nozzle support portions 213b are arranged on both sides of the pair of track bodies Rb in the width direction Y. More specifically, on both sides of the pair of track bodies Rb in the width direction Y, a portion of the plurality of nozzle support portions 213b is arranged above the pair of track bodies Rb, and another portion of the plurality of nozzle support portions 213b is arranged below the pair of track bodies Rb. In this example, a total of four nozzle support portions 213b are provided, two of which are arranged above the pair of track bodies Rb, and the remaining two are arranged below the pair of track bodies Rb.

[0065] like Figure 8 As shown, when the target vehicle is a sweeper 1, multiple nozzles 213a, supported by nozzle support portions 213b located above the pair of track bodies Rb, blow air onto the travel mechanism 10 of the sweeper 1. Furthermore, multiple nozzles 213a, supported by nozzle support portions 213b located below the pair of track bodies Rb, blow air onto the main body 11 of the sweeper 1 (see reference 1). Figure 2 Air is sprayed onto the hood 12. This allows the entire sweeper 1 to be cleaned. When the target vehicle is the transport vehicle 3, the multiple nozzles 213a, supported by the nozzle support 213b, also spray air onto the same areas as when air is sprayed onto the sweeper 1. Dust removed from the target vehicle by the cleaning unit 213 disperses within the internal space of the housing 22.

[0066] The maintenance device 2 includes a dust collection section 214 for collecting dust from the interior space of the housing 22. In this embodiment, the dust collection section 214 is provided on the maintenance device 21. The dust collection section 214 is located below the cleaning section 213. In this example, the dust collection section 214 is supported by the lower end of the support body 211.

[0067] The dust collection unit 214 is configured with a fan filter unit 214a, which includes a fan and a filter. In the illustrated example, two fan filter units 214a are arranged in the width direction Y. The dust collection unit 214 uses a fan to draw air from the interior space of the housing 22 and discharge it to the outside, and uses a filter to capture dust from the interior space of the housing 22 during the drawing process. Thus, the dust collection unit 214 collects the dust removed from the sweeper 1 or the conveyor 3 by the cleaning unit 213.

[0068] Here, as described above, the sweeper 1 discharges the dust sucked up along the travel path R at the maintenance stop position A. The dust collection unit 214 is configured to collect the dust discharged from the storage unit 15 to the outside by the discharge unit 16 of the sweeper 1 stopped at the maintenance stop position A. That is, the maintenance equipment 2 includes a dust collection unit 214 that collects the dust discharged from the storage unit 15 to the outside by the discharge unit 16 of the sweeper 1 stopped at the maintenance stop position A.

[0069] Thus, according to the cleaning system disclosed herein, after the sweeper 1 sucks up the dust along its travel path R, it travels to a maintenance stop position A, where it can discharge the dust accumulated in the storage section 15 to the outside. Furthermore, the dust discharged from the sweeper 1 can be automatically collected by the dust collection section 214 of the maintenance equipment 2. That is, the dust collected by the sweeper 1 can be automatically processed in the cleaning system. Moreover, since the dust collected by the sweeper 1 can be processed in the maintenance equipment 2 that performs maintenance (cleaning) of the conveyor 3, it is easy to incorporate existing material conveying equipment equipped with the maintenance equipment 2 into this cleaning system.

[0070] Furthermore, in this embodiment, when the sweeper 1 is stopped at the maintenance stop position A, the maintenance device 2 performs cleaning of the sweeper 1 in parallel with the cleaning unit 213, while the dust collection unit 214 collects the dust discharged from the sweeper 1. Therefore, the cleaning of the sweeper 1 and the processing of the dust collected by the sweeper 1 can be performed in parallel. Thus, the sweeper 1 itself can be cleaned while the dust collected by the sweeper 1 is being processed.

[0071] [Control Structure]

[0072] Next, mainly refer to Figure 7 The control structure of the material conveying equipment and cleaning system is described.

[0073] like Figure 7 As shown, the material conveying equipment includes an overall control device Ct for managing the entire equipment, a conveyor control device C3 for controlling the conveyor vehicle 3, a sweeper control device C1 for controlling the sweeper vehicle 1, and a maintenance equipment control device C2 for controlling the maintenance equipment 2. The conveyor control device C3 is installed on the conveyor vehicle 3, the sweeper control device C1 is installed on the sweeper vehicle 1, and the maintenance equipment control device C2 is installed on the maintenance equipment 2. These control devices include, for example, processors such as microcomputers, memory, and peripheral circuits. Furthermore, each function is achieved through the cooperation of this hardware and the program executing on the processor such as the computer.

[0074] The overall control device Ct issues various commands, such as conveying commands, sweeping commands, cleaning commands, and dust collection commands, to the conveyor vehicle control device C3, the sweeper vehicle control device C1, and the maintenance equipment control device C2. The conveyor vehicle control device C3 and the sweeper vehicle control device C1 send signals to the overall control device Ct indicating their vehicle's position and operational status. Furthermore, the maintenance equipment control device C2 sends signals to the overall control device Ct indicating the operational status of the maintenance equipment 2. In this way, the overall control device Ct can monitor the status of each device within the equipment and issue various commands to each control device based on the status of each device.

[0075] The transport vehicle control device C3 is configured to control the operation of the travel mechanism 30 and the transfer mechanism 31 based on transport commands from the overall control device Ct.

[0076] The sweeper control device C1 controls the operation of the driving mechanism 10, the airflow generation unit G, and the flow path switching mechanism 17 based on sweeping commands from the overall control device Ct.

[0077] In this embodiment, when the sweeper control device C1 causes the sweeper 1 to perform dust suction using the suction unit 14 in the travel path R, the flow path switching mechanism 17 is set to the first state and the airflow generation unit G generates a suction airflow Fi (see reference). Figure 3 Thus, the dust accumulated on the travel path R, or more specifically on the track Ra, is sucked up and stored in the storage section 15.

[0078] Furthermore, in this embodiment, the sweeper control device C1 determines, based on the detection results from the storage state detection unit 18, whether it is a state requiring dust discharge from the storage unit 15. If it is determined that a discharge state is required, the sweeper 1 is driven to and stopped at the maintenance stop position A, where dust is discharged via the discharge unit 16. As described above, in this example, if the pressure detected by the storage state detection unit 18 is below a predetermined value, it is determined that a discharge state is required.

[0079] In this embodiment, when the sweeper control device C1 discharges dust from the sweeper 1 via the discharge section 16 at the maintenance stop position A, the flow path switching mechanism 17 is set to the second state, and the airflow generation section G generates the discharge airflow Fo (see reference). Figure 4 Therefore, as Figure 8 As shown, dust is discharged to the outside of the sweeper 1 through the discharge port 161. The dust discharged to the outside of the sweeper 1 is released into the interior of the housing 22 and collected by the dust collection section 214.

[0080] In this embodiment, after the sweeper vehicle 1 discharges dust via the discharge section 16 at the maintenance stop position A, the sweeper vehicle control device C1 performs a detection by the storage state detection unit 18. If the detection result determines that the dust discharge is not required, the sweeper vehicle 1 starts from the maintenance stop position A and begins sweeping along the travel path R. In this example, after the sweeper vehicle control device C1 discharges dust via the discharge section 16 at the maintenance stop position A, it sets the flow path switching mechanism 17 to the first state and, under the state where the airflow generation unit G generates a suction airflow Fi (see reference...). Figure 3 The sweeper 1 then performs a detection using the storage state detection unit 18. If the pressure detected by the storage state detection unit 18 is greater than a predetermined value, the sweeper control device C1 determines that a discharge is not required and restarts sweeping along the travel path R. Conversely, if the sweeper control device C1 determines that a discharge is required based on the detection result from the storage state detection unit 18, it restarts dust discharge from the sweeper 1 using the discharge unit 16.

[0081] The maintenance equipment control device C2 is configured to control the operation of the gate 222, the cleaning unit 213 and the dust collection unit 214 based on the dust collection command or cleaning command from the overall control device Ct.

[0082] In this embodiment, the maintenance equipment control device C2 is as follows: Figure 5 As shown, before the sweeper 1 (or conveyor 3 in the case of a cleaning command) which is the target of a dust collection command reaches the maintenance stop position A, the gate body 222A of the gate 222 is set to the open position, thereby opening the opening 221 of the side panel 22S. Furthermore, Figure 5 This indicates that the gate body 222A is in the closed position. In this embodiment, when the sweeper 1 stops in front of the maintenance stop position A, i.e., in front of the housing 22, the maintenance equipment control device C2 sets the gate body 222A to the open position, opening the opening 221. The maintenance equipment control device C2 is configured to monitor the state of the sweeper 1 stopping in front of the maintenance stop position A by communicating with the sweeper control device C1 (or the conveyor control device C3 in the case of a cleaning command) or the overall control device Ct. However, it is also possible to detect the state of the sweeper 1 stopping in front of the maintenance stop position A by a sensor. When the sweeper 1 enters the interior of the housing 22 and stops in the maintenance stop position A, the maintenance equipment control device C2 sets the gate body 222A of the gate 222 to the closed position, closing the opening 221 of the side panel 22S.

[0083] Moreover, maintenance equipment control device C2, such as Figure 8As shown, after the sweeper 1 (or conveyor 3 in the case of a cleaning command) that is the target of a dust collection command stops at the maintenance stop position A, the cleaning unit 213 cleans the sweeper 1, and the dust collection unit 214 collects the dust. Then, if the sweeper control unit C1 determines that the sweeper is not in a state where discharge is required, the maintenance equipment control device C2 sets the gate body 222A of the gate 222 to the open position, thereby opening the opening 221 of the side panel 22S (see reference). Figure 5 The maintenance equipment control device C2 is configured to detect, through communication with the sweeper control device C1 or the overall control device Ct, the situation where the sweeper control device C1 determines that the sweeper does not need to be discharged.

[0084] Next, use Figure 9 The flowchart simply illustrates the sequence of dust handling performed by the cleaning system.

[0085] Sweeper 1 sucks up dust from its travel path R and cleans the path R (#1). Then, sweeper control device C1 determines whether the storage unit 15 needs to be discharged (#2). This determination can be made, for example, after a certain period of time or whenever sweeper 1 has traveled a certain distance. If sweeper control device C1 determines that the path does not need to be discharged (#2: No), sweeper 1 continues cleaning the travel path R (#1). If sweeper control device C1 determines that the path needs to be discharged (#2: Yes), sweeper 1 travels to maintenance stop position A (#3).

[0086] After the sweeper 1 travels to and stops at maintenance stop position A, the discharge unit 16 discharges dust (#4). Then, the maintenance equipment 2 cleans the sweeper 1 using the cleaning unit 213 and collects dust using the dust collection unit 214 (#5, #6). Then, the sweeper control device C1 determines whether the discharge requirement has been eliminated (#7). If the sweeper control device C1 determines that the discharge requirement has not been eliminated (#7: No), dust discharge resumes (#4), and cleaning (#5) and dust collection (#6) of the sweeper 1 continue. If the sweeper control device C1 determines that the discharge requirement has been eliminated (#7: Yes), the sweeper 1 resumes sweeping along its travel path R (#8).

[0087] [Other Implementation Methods]

[0088] Next, other implementations of the cleaning system will be described.

[0089] (1) In the above embodiment, an example was described in which a first pipe P1 having a suction port 141 and a second pipe P2 having a discharge port 161 are connected by a branch Pd. However, this is not a limitation; the first pipe P1 and the second pipe P2 may also be provided independently without being connected to each other. In this case, both the end of the first pipe P1 opposite to the suction port 141 and the end of the second pipe P2 opposite to the discharge port 161 open into the storage section 15. Furthermore, the entire first pipe P1 constitutes part of the suction flow path Wi. In addition, the entire second pipe P2 constitutes part of the discharge flow path Wo.

[0090] (2) In the above embodiment, an example of an airflow generating unit G being configured including a fan Ga and a drive unit (not shown) that drives the fan Ga has been described. However, it is not limited to such an example; for example, the airflow generating unit G may also be configured using a pump or the like that does not have a fan Ga.

[0091] (3) In the above embodiment, an example in which the airflow generating unit G is shared by the suction unit 14 and the discharge unit 16 has been described. However, it is not limited to such an example. The suction unit 14 may have a dedicated airflow generating unit G for generating the suction airflow Fi, and the discharge unit 16 may have a dedicated airflow generating unit G for generating the discharge airflow Fo. Furthermore, in this case, the discharge airflow Fo is not limited to an airflow in the opposite direction to the suction airflow Fi. The relationship between the direction of the discharge airflow Fo and the direction of the suction airflow Fi varies depending on the arrangement of the airflow generating units G that generate their respective airflows, and can be arbitrarily set.

[0092] (4) In the above embodiment, an example was described in which the storage state detection unit 18 is configured to detect the pressure of the suction flow path Wi relative to the airflow generation section G of the filter 142 during the generation of the suction airflow Fi, as a measure of the dust storage state. However, it is not limited to this example; the storage state detection unit 18 may also be configured to detect the pressure of the suction flow path Wi relative to the suction port 141 of the filter 142 during the generation of the suction airflow Fi. When the filter 142 is clogged due to dust and the overall flow of the suction airflow Fi is slowed down, not only the pressure of the suction flow path Wi relative to the airflow generation section G of the filter 142 changes, but also the pressure on the suction port 141 side. In another example described above, such pressure changes can also be used to detect the dust storage state.

[0093] (5) In the above embodiment, an example was described in which the storage state detection unit 18 is configured as a pressure sensor that detects the pressure in the internal space of the main body 11, and the storage state of dust in the storage unit 15 is detected by detecting the pressure in the internal space of the main body 11. However, it is not limited to such an example. For example, the storage state detection unit 18 may also be configured to measure the elapsed time from the start of dust suction along the travel path R by the suction unit 14, and detect the storage state of dust in the storage unit 15 based on the elapsed time. It can be determined that the longer the elapsed time, the more dust is stored in the storage unit 15. In the above case, it is preferable that the sweeper control device C1 (control unit) determines that the state of discharge needs to be reached when the elapsed time measured by the storage state detection unit 18 exceeds a predetermined time. In addition, it is also preferable that, for example, the storage state detection unit 18 is configured using a transmission type light sensor, and is structured such that it measures the amount of light transmitted through the filter 142, and determines that the state of discharge needs to be reached when the amount of light is below a predetermined amount.

[0094] (6) In the above embodiment, an example was described in which the maintenance equipment 2 cleans the sweeper 1 in parallel with the cleaning unit 213, and the dust collected by the dust collection unit 214 collects the dust discharged from the sweeper 1. However, it is not limited to such an example. The maintenance equipment 2 may also clean the sweeper 1 with the help of the cleaning unit 213 and collect the dust with the help of the dust collection unit 214 at different times. That is, the maintenance equipment 2 may only clean the sweeper 1 with the help of the cleaning unit 213, or it may only collect the dust with the help of the dust collection unit 214.

[0095] (7) In the above embodiment, the sweeper control device C1 is equivalent to a "control unit," and the sweeper 1 is controlled based on the detection result of the storage state detection unit 18 to determine whether it is a discharge state that requires the dust to be discharged from the storage unit 15. However, it is not limited to such an example. For example, the overall control device Ct, which manages the entire equipment, can also determine whether it is a discharge state based on the information received from the sweeper control device C1. In this case, the overall control device Ct is equivalent to a "control unit." Alternatively, the device that combines the sweeper control device C1 and the overall control device Ct can also be structured as a "control unit."

[0096] (8) In the above embodiments, an example of applying the cleaning system to an overhead conveyor as an item conveying device has been described. However, it is not limited to such an example; for example, an item conveying device that applies the cleaning system can also be a device that conveys items 8 on a floor surface. In this case, the conveyor 3 is configured to convey items 8 by traveling along a travel path R provided on the floor surface. Moreover, the cleaning vehicle 1 is configured to clean the travel path R provided on the floor surface.

[0097] (9) Furthermore, the structures disclosed in the above embodiments can be combined with structures disclosed in other embodiments, provided that no contradictions arise. Regarding other structures, the embodiments disclosed in this specification are merely illustrative in all respects. Therefore, various modifications can be appropriately made without departing from the spirit of this disclosure.

[0098] [Summary of the above embodiments]

[0099] The cleaning system described above will now be explained.

[0100] The cleaning system includes: a sweeper that travels along a predetermined path to clean the path; and a maintenance device installed at a maintenance stop position set at the path; the sweeper includes a suction unit for sucking up dust from the path, a storage unit for storing the sucked-up dust, and a discharge unit for discharging the dust stored in the storage unit to the outside; the maintenance device includes a dust collection unit that collects the dust discharged from the storage unit to the outside by the discharge unit of the sweeper, which is stopped at the maintenance stop position.

[0101] According to this structure, the sweeper can suck up dust along its travel path and then drive itself to a maintenance stop position, where it discharges the dust accumulated in the storage compartment to the outside. The dust discharged from the sweeper can then be automatically collected by the dust collection unit of the maintenance equipment. Thus, according to this structure, the dust collected by the sweeper can be processed automatically. Therefore, the workload of the operator is reduced when processing the dust collected by the sweeper.

[0102] Here, preferably, the aforementioned suction unit includes a suction port formed in a manner facing the aforementioned travel path opening and connected to the aforementioned storage unit, an airflow generating unit that generates a suction airflow that draws dust from the aforementioned suction port, and a filter; the aforementioned storage unit and the aforementioned filter are disposed in a suction flow path that connects the aforementioned suction port and the aforementioned airflow generating unit; the aforementioned storage unit is disposed in a region of the aforementioned suction flow path that is closer to the aforementioned suction port than the aforementioned filter.

[0103] According to this structure, dust drawn in by the suction airflow from the suction port and flowing in the suction flow path can be captured by a filter. Therefore, the dust can be appropriately stored in a storage section provided in the suction flow path, in a region closer to the suction port than the filter.

[0104] Furthermore, preferably, the aforementioned discharge section has an outlet connected to the aforementioned storage section and an airflow generating section shared with the aforementioned suction section; the aforementioned discharge section discharges dust captured by the aforementioned filter and stored in the aforementioned storage section from the aforementioned outlet by generating an exhaust airflow that is an airflow in the opposite direction to the airflow generated by the aforementioned airflow generating section.

[0105] According to this structure, since the airflow generating unit can be shared for both dust suction and discharge, the number of parts in the sweeper can be easily reduced, thus achieving miniaturization. Furthermore, according to this structure, by sharing the airflow generating unit, a discharge airflow in the opposite direction to the suction airflow can be generated from the same position as in the dust suction case. This facilitates the removal of dust captured by the filter during suction, allowing it to be properly discharged from the outlet via the discharge airflow.

[0106] Furthermore, preferably, the aforementioned sweeper also includes: a branch portion, which connects the aforementioned suction flow path and the aforementioned discharge outlet to the aforementioned airflow generating portion; and a flow path switching mechanism disposed in the aforementioned branch portion; the aforementioned flow path switching mechanism can switch to a first state in which the aforementioned suction port is connected to the aforementioned storage portion and the connection between the aforementioned discharge outlet and the aforementioned storage portion is cut off, and a second state in which the connection between the aforementioned suction port and the aforementioned storage portion is cut off and the aforementioned discharge outlet is connected to the aforementioned storage portion.

[0107] According to this structure, since the suction port is connected to the storage section and the connection between the discharge port and the storage section is blocked in the first state of the flow path switching mechanism, the dust being suctioned can be properly stored in the storage section without being discharged through the discharge port. Furthermore, since the connection between the suction port and the storage section is blocked and the discharge port is connected to the storage section in the second state of the flow path switching mechanism, the dust being discharged can be properly discharged through the discharge port without being discharged from an unwanted location through the suction port. Moreover, this flow path switching can be achieved with a relatively simple structure, such as a switching mechanism provided at the branch section.

[0108] Furthermore, preferably, it also includes a control unit for controlling the aforementioned sweeper; the aforementioned sweeper also includes a storage state detection unit, which detects the storage state of dust in the aforementioned storage unit; the aforementioned control unit determines, based on the detection result of the aforementioned storage state detection unit, whether it is a state where dust needs to be discharged from the aforementioned storage unit, and if it is determined that it is a state where dust needs to be discharged, causes the aforementioned sweeper to travel to the aforementioned maintenance stop position and stop, and discharges the dust using the aforementioned discharge unit at the aforementioned maintenance stop position.

[0109] According to this structure, when the control unit determines, based on the detection result of the storage state detection unit, that a discharge condition is required, it directs the sweeper to a maintenance stop position to discharge dust. Furthermore, dust collection along the sweeper's travel path can continue until the control unit determines that a discharge condition is required. Therefore, according to this structure, dust collection and discharge along the sweeper's travel path can be performed efficiently.

[0110] Furthermore, preferably, the aforementioned storage state detection unit detects the pressure of the aforementioned suction flow path in the generation of the aforementioned suction air flow on the side closer to the aforementioned air flow generation unit than the aforementioned filter, as the aforementioned storage state; the aforementioned control unit determines that the aforementioned state requiring discharge is the aforementioned state when the pressure detected by the aforementioned storage state detection unit is below a predetermined value.

[0111] If the dust stored in the storage section increases, a large amount of dust adheres to the filter, making it difficult for the suction airflow to pass through the filter, thus causing a pressure drop on the side closer to the airflow generation section than the filter. Utilizing this, in this structure, when the pressure on the side closer to the airflow generation section than the filter in the suction flow path falls below a predetermined value, the control unit determines that a discharge state is required. Thus, according to this structure, based on pressure changes that can be easily detected by pressure sensors, it is possible to appropriately determine whether a discharge state is required.

[0112] Furthermore, preferably, after the aforementioned control unit causes the aforementioned sweeper to discharge dust using the aforementioned discharge unit at the aforementioned maintenance stop position, it performs a detection using the aforementioned storage state detection unit. If, based on the detection result, it is determined that the aforementioned state does not require discharge, the aforementioned sweeper starts from the aforementioned maintenance stop position and resumes sweeping along the aforementioned travel path.

[0113] According to this structure, the sweeping of the path of the sweeper can be restarted automatically after the dust is discharged. Therefore, according to this structure, the workload of the operator can be reduced when the sweeping is restarted by the moving vehicle.

[0114] Furthermore, preferably, the cleaning system is equipped with a material conveying device that has a material conveying vehicle; the aforementioned maintenance device has a cleaning unit that cleans the aforementioned sweeper and the aforementioned conveying vehicle at the aforementioned maintenance stop position. When the aforementioned sweeper is stopped at the aforementioned maintenance stop position, the cleaning of the aforementioned sweeper is performed in parallel with the cleaning of the aforementioned sweeper by the aforementioned cleaning unit, and the dust discharged from the sweeper is collected by the aforementioned dust collection unit.

[0115] According to this structure, the cleaning of the sweeper and the treatment of dust collected by the sweeper can be performed in parallel. Furthermore, this cleaning system can be easily integrated into existing material conveying equipment, for example.

[0116] Industrial availability

[0117] The technology disclosed herein can be used in cleaning systems for sweeping vehicles that travel along a predetermined path and perform sweeping along that path.

[0118] Explanation of reference numerals in the attached figures

[0119] 1: Sweeper

[0120] 14: Suction section

[0121] 15: Storage Department

[0122] 16: Discharge section

[0123] 17: Flow path switching mechanism

[0124] 18: Storage Status Monitoring Department

[0125] 141: Suction port

[0126] 142: Filter

[0127] 161: Discharge outlet

[0128] 2: Equipment maintenance

[0129] 213: Cleaning Department

[0130] 214: Dust Collection Department

[0131] 3: Conveyor vehicle

[0132] G: Airflow generation section

[0133] Fi: Airflow

[0134] Fo: Exhaust airflow

[0135] Wi: Suction Flow Path

[0136] Wo: discharge flow path

[0137] Pd: Branch

[0138] 8: Items

[0139] R: Driving route

[0140] A: Stop position for maintenance.

Claims

1. A cleaning system, comprising: The sweeper truck travels along a designated route to sweep the aforementioned route; Maintenance equipment is installed at a maintenance stop position set along the aforementioned travel path; A maintenance equipment control device for controlling the aforementioned maintenance equipment; and The control unit controls the aforementioned sweeper vehicle; Its features are, The aforementioned sweeper has a suction unit for sucking up dust along the aforementioned travel path, a storage unit for storing the sucked-up dust, and a discharge unit for discharging the dust stored in the aforementioned storage unit to the outside. The aforementioned maintenance equipment includes a maintenance device for performing maintenance on the aforementioned sweeper and being positioned at the aforementioned maintenance stop position, a housing surrounding the aforementioned maintenance device, a gate that can freely open and close the opening of the aforementioned housing, and a dust collection unit for collecting dust discharged from the aforementioned discharge section of the aforementioned sweeper, which is stopped at the aforementioned maintenance stop position, from the aforementioned storage unit to the outside. The aforementioned maintenance equipment control device is configured to open and close the aforementioned gate according to the actions of the aforementioned sweeper; When the aforementioned sweeper is in front of the aforementioned housing, the aforementioned maintenance equipment control device opens the aforementioned gate, thereby opening the aforementioned opening. When the aforementioned sweeper enters the interior of the aforementioned housing and stops at the aforementioned maintenance stop position, the aforementioned maintenance equipment control device closes the aforementioned gate, thereby closing the aforementioned opening. The aforementioned maintenance equipment control device collects dust in the aforementioned dust collection section inside the aforementioned housing. Then, if the aforementioned control section determines that it is not a state where dust needs to be discharged from the aforementioned storage section, it opens the aforementioned gate to open the aforementioned opening.

2. The cleaning system as described in claim 1, characterized in that, The aforementioned suction unit includes a suction port formed in a manner that faces the aforementioned travel path opening and is connected to the aforementioned storage unit, an airflow generating unit that generates a suction airflow that draws dust from the aforementioned suction port, and a filter. The aforementioned storage section and the aforementioned filter are arranged in a suction flow path that connects the aforementioned suction port to the aforementioned airflow generating section; The aforementioned storage section is located in the region of the aforementioned suction flow path that is closer to the aforementioned suction port than the aforementioned filter.

3. The cleaning system as described in claim 2, characterized in that, The aforementioned discharge section has an outlet connected to the aforementioned storage section and an airflow generating section shared with the aforementioned suction section; The aforementioned discharge section generates an exhaust airflow that is the opposite direction to the airflow generated by the aforementioned airflow generation section, and the dust captured by the aforementioned filter and stored in the aforementioned storage section is discharged from the aforementioned discharge port.

4. The cleaning system as described in claim 3, characterized in that, The aforementioned sweeper also has: A branch section, which connects the aforementioned suction flow path and the discharge flow path branch that connects the aforementioned discharge outlet to the aforementioned airflow generating section; and The flow path switching mechanism is configured in the aforementioned branch; The aforementioned flow path switching mechanism can be switched to a first state in which the aforementioned suction port is connected to the aforementioned storage section and the connection between the aforementioned discharge port and the aforementioned storage section is blocked, and a second state in which the connection between the aforementioned suction port and the aforementioned storage section is blocked and the aforementioned discharge port is connected to the aforementioned storage section.

5. The cleaning system as described in claim 1, characterized in that, The aforementioned sweeper also has a storage status detection unit, which detects the storage status of dust in the aforementioned storage unit; Based on the detection results of the aforementioned storage state detection unit, the aforementioned control unit determines whether it is a state where dust needs to be discharged from the aforementioned storage unit. If it is determined that the state is a state where dust needs to be discharged, the aforementioned sweeper is driven to the aforementioned maintenance stop position and stopped, and the dust is discharged from the aforementioned discharge unit at the aforementioned maintenance stop position.

6. The cleaning system as described in any one of claims 2 to 4, characterized in that, The aforementioned sweeper also has a storage status detection unit, which detects the storage status of dust in the aforementioned storage unit; Based on the detection results of the aforementioned storage state detection unit, the aforementioned control unit determines whether it is a state where dust needs to be discharged from the aforementioned storage unit. If it is determined that the state is a state where dust needs to be discharged, the aforementioned sweeper is driven to the aforementioned maintenance stop position and stopped, and the dust is discharged from the aforementioned discharge unit at the aforementioned maintenance stop position.

7. The cleaning system as described in claim 6, characterized in that, The aforementioned storage state detection unit detects the pressure of the aforementioned suction flow path relative to the aforementioned air flow generation unit in the aforementioned storage state during the generation of the aforementioned suction air flow. The aforementioned control unit determines that the aforementioned state requiring discharge is when the pressure detected by the aforementioned storage state detection unit is below a specified value.

8. The cleaning system as described in claim 6, characterized in that, After the aforementioned control unit causes the aforementioned sweeper to discharge dust using the aforementioned discharge unit at the aforementioned maintenance stop position, it performs a detection using the aforementioned storage state detection unit. If the detection result determines that the aforementioned state does not require discharge, the aforementioned sweeper starts from the aforementioned maintenance stop position and resumes sweeping along the aforementioned travel path.

9. The cleaning system as described in claim 7, characterized in that, After the aforementioned control unit causes the aforementioned sweeper to discharge dust using the aforementioned discharge unit at the aforementioned maintenance stop position, it performs a detection using the aforementioned storage state detection unit. If the detection result determines that the aforementioned state does not require discharge, the aforementioned sweeper starts from the aforementioned maintenance stop position and resumes sweeping along the aforementioned travel path.

10. The cleaning system as described in any one of claims 1 to 5, characterized in that, A goods conveying device equipped on a conveyor vehicle capable of conveying goods; The aforementioned maintenance equipment includes a cleaning unit that cleans the aforementioned sweeper and the aforementioned conveyor at the aforementioned maintenance stop position. When the aforementioned sweeper is stopped at the aforementioned maintenance stop position, the cleaning unit cleans the aforementioned sweeper in parallel with the aforementioned cleaning of the aforementioned sweeper, and the aforementioned dust collection unit collects the dust discharged from the sweeper.

11. The cleaning system as described in claim 6, characterized in that, A goods conveying device equipped on a conveyor vehicle capable of conveying goods; The aforementioned maintenance equipment includes a cleaning unit that cleans the aforementioned sweeper and the aforementioned conveyor at the aforementioned maintenance stop position. When the aforementioned sweeper is stopped at the aforementioned maintenance stop position, the cleaning unit cleans the aforementioned sweeper in parallel with the aforementioned cleaning of the aforementioned sweeper, and the aforementioned dust collection unit collects the dust discharged from the sweeper.

12. The cleaning system as described in claim 7, characterized in that, A goods conveying device equipped on a conveyor vehicle capable of conveying goods; The aforementioned maintenance equipment includes a cleaning unit that cleans the aforementioned sweeper and the aforementioned conveyor at the aforementioned maintenance stop position. When the aforementioned sweeper is stopped at the aforementioned maintenance stop position, the cleaning unit cleans the aforementioned sweeper in parallel with the aforementioned cleaning of the aforementioned sweeper, and the aforementioned dust collection unit collects the dust discharged from the sweeper.

13. The cleaning system as described in claim 8, characterized in that, A goods conveying device equipped on a conveyor vehicle capable of conveying goods; The aforementioned maintenance equipment includes a cleaning unit that cleans the aforementioned sweeper and the aforementioned conveyor at the aforementioned maintenance stop position. When the aforementioned sweeper is stopped at the aforementioned maintenance stop position, the cleaning unit cleans the aforementioned sweeper in parallel with the aforementioned cleaning of the aforementioned sweeper, and the aforementioned dust collection unit collects the dust discharged from the sweeper.

14. The cleaning system as described in claim 9, characterized in that, A goods conveying device equipped on a conveyor vehicle capable of conveying goods; The aforementioned maintenance equipment includes a cleaning unit that cleans the aforementioned sweeper and the aforementioned conveyor at the aforementioned maintenance stop position. When the aforementioned sweeper is stopped at the aforementioned maintenance stop position, the cleaning unit cleans the aforementioned sweeper in parallel with the aforementioned cleaning of the aforementioned sweeper, and the aforementioned dust collection unit collects the dust discharged from the sweeper.

Images