Washing device

Abstract

To provide a cleaning device that is easy to handle. [Solution] The present invention relates to a cleaning device 2 comprising a tubular nozzle shaft 22, a cleaning nozzle 23 for spraying cleaning fluid, and a swivel mechanism 24 provided at the tip of the nozzle shaft 22 for rotating the cleaning nozzle 23 in three dimensions. The nozzle shaft 22 is provided to be extendable and retractable by a telescopic mechanism consisting of a plurality of tubular members 22a, and a high-pressure hose 25 connected to the cleaning fluid supply means 4 is provided inside the nozzle shaft 22. When in use, the nozzle shaft 22 can be extended (a) to position the cleaning nozzle 23 at the required location inside the container 1. When not in use or when inserting the cleaning nozzle 23 into the container 1, the nozzle shaft 22 can be shortened (b) to make it compact and prevent contact with the ceiling or other surfaces.

Description

Technical Field

[0004] , , ,

[0005]

[0001] The present invention relates to a cleaning device, and more particularly to a cleaning device provided with a cleaning nozzle that can be three-dimensionally rotated at the tip of a tubular nozzle shaft.

Background Art

[0002] Conventionally, as a cleaning device for cleaning the inside of a container, there is known one in which an injection nozzle for injecting a cleaning liquid is three-dimensionally rotated to clean all parts of the container (Patent Document 1). The injection nozzle is provided at the tip of the nozzle shaft. When cleaning the inside of the container, the nozzle shaft is inserted into the container so that the cleaning nozzle is positioned inside the container.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the case of the cleaning device of Patent Document 1, in order to clean a large container, a long nozzle shaft is required. When inserting the nozzle shaft into the container, the main body provided at the base of the nozzle shaft may collide with the ceiling of the room where the container is installed or other structures, etc., which not only makes it difficult to handle, but also occupies a large space for storage when not in use. In view of such problems, the present invention provides a cleaning device that is easy to handle.

Means for Solving the Problems

[0005] In other words, the cleaning device according to claim 1 comprises a tubular nozzle shaft having a main body at its base end, a cleaning nozzle for spraying cleaning liquid, a swivel mechanism provided at the tip of the nozzle shaft for rotating the cleaning nozzle in three dimensions, a driving means for driving the swivel mechanism, and a cleaning liquid supply means for supplying cleaning liquid to the cleaning nozzle, The nozzle shaft is provided to be extendable and retractable by a telescopic mechanism consisting of multiple tubular members, and a high-pressure hose connected to the cleaning fluid supply means is provided inside. The above-mentioned swivel mechanism comprises a bearing portion fixed to the tip of the nozzle shaft, and a swivel rotating shaft that is pivotally supported by the bearing portion in a direction perpendicular to the nozzle shaft, with the cleaning nozzle provided at its end. The bearing portion is rotatably connected to the tip of the high-pressure hose. The above-described drive mechanism is characterized by comprising a first drive mechanism for rotating the bearing portion together with the nozzle shaft, and a second drive mechanism for rotating the pivot axis. [Effects of the Invention]

[0006] According to the above invention, by making the nozzle shaft extendable and retractable by a telescopic mechanism, the cleaning nozzle can be positioned at the required location when extended during use, and can be made compact by shortening the nozzle shaft when not in use. This allows for compact storage in a shortened state, and also makes it easier to handle, for example, by preventing the main body from touching the ceiling when inserting the cleaning nozzle into the container. [Brief explanation of the drawing]

[0007] [Figure 1] Side view of the cleaning device according to this embodiment [Figure 2] Side view of the cleaning device [Figure 3] Plan view of the cleaning device [Figure 4] Diagram illustrating the nozzle shaft and drive shaft. [Figure 5] Diagram explaining the rotation mechanism [Figure 6] Diagram explaining the main body [Figure 7] Diagram explaining the main body [Modes for carrying out the invention]

[0008] In this embodiment, Figures 1 to 3 show a cleaning device 2 for cleaning the inside of a container 1 capable of stirring food ingredients, etc. Figure 1 shows the device in use, Figure 2 shows the device in unused condition, and Figure 3 shows a plan view in use. In the following description, the left-right direction shown in Figures 1 and 2 will be referred to as the front-back direction, the up-down direction shown will be referred to as the up-down direction, and the up-down direction shown in Figure 3 will be referred to as the left-right direction. The washing device 2 of this embodiment is movable by a trolley 3, and can be kept in a position away from the container 1 while the ingredients are being stirred in the required container 1. After stirring is complete, it is moved to a position adjacent to the container 1 for use.

[0009] In this embodiment, the container 1 to be washed is, for example, a bottomed cylindrical metal container with a diameter of about 2 m. The upper part of this container 1 is provided with a roughly hemispherical lid 1a, and the lid 1a is provided with a material input hole 1b. The material input hole 1b described above is a cylindrical member and is provided at an angle toward the outside of the container 1 so that material can be input from diagonally above the container 1, and is formed with a certain width in the front-to-back and left-to-right directions when viewed from above. When stirring the materials, the materials are introduced through the material input hole 1b, and after the stirring of the materials is complete, the stirred materials are removed from a discharge port (not shown) located at the bottom of the container 1.

[0010] Furthermore, the container 1 of this embodiment is equipped with a rotatable stirring blade 1c, which is driven by a stirring blade driving means 1d. The stirring blade 1c has a roughly U-shape, and its outer edge conforms to the shape of the inner surface of the container 1. A drive shaft 1e is fixed to the center of the stirring blade 1c, and is positioned to coincide with the central axis of the container 1. The stirring blade drive means 1d is configured with a motor, and when the drive shaft 1e is rotated, the stirring blade 1c rotates along the inner circumferential surface of the container 1, stirring the material inside the container 1.

[0011] The cleaning device 2 described above comprises a cleaning unit 2A that sprays cleaning liquid into the container 1, and a control unit 2B that includes a cleaning liquid supply means 4 that delivers cleaning liquid to the cleaning unit 2A and a control means 5 that controls these, and these are movable by the trolley 3 described above. The cleaning fluid supply means 4 provided in the control unit 2B is equipped with a high-pressure pump and supplies high-pressure cleaning fluid to the cleaning unit 2A. In addition to water, detergents or other substances may be added as needed, or high-temperature water may be used as the cleaning fluid. The control means 5 controls the cleaning unit 2A and the cleaning liquid supply means 4, stores the size and shape of the container 1 and the stirring blade 1c to be cleaned, a cleaning recipe for cleaning the container 1, and has an operation panel for displaying the operation and progress of the cleaning device 2.

[0012] The cleaning unit 2A includes a cleaning unit 11 equipped with a cleaning nozzle 23, a lifting means 12 for raising and lowering the cleaning unit 11, and a swinging means 13 for swinging the cleaning unit 11 back and forth, left and right, up and down. The lifting mechanism 12 is provided on the upper part of the trolley 3 and includes a lifting plate 12a that is provided to be able to move up and down, and a lifting motor 12b that moves the lifting plate 12a up and down. The lifting mechanism 12 raises and lowers the cleaning unit 11 to position the cleaning nozzle 23 of the cleaning unit 11 at a height suitable for inserting it into the container 1, and when not in use, it positions the cleaning unit 11 at its lowered end to make the cleaning section 2A as compact as possible. Further, a frame 14 is provided above the lifting plate 12a so as to cover the cleaning unit 2A. When in the non-use state, the cleaning unit 11 is housed inside the frame 14, and when in the use state, the cleaning nozzle 23 is exposed outside the frame 14 and inserted into the container 1.

[0013] The swinging means 13 includes a swinging plate 13a provided so as to be swingable left and right with respect to the lifting plate 12a, a left and right swing motor 13b for swinging the swinging plate 13a left and right, and an up and down swing motor 13c for swinging the cleaning unit 11 up and down (or back and forth). The swinging means 13 swings the cleaning unit 11 by the left and right swing motor 13b and the up and down swing motor 13c, and moves the cleaning nozzle 23 provided at the tip back and forth, left and right or up and down, so that the cleaning nozzle 23 can be moved to an arbitrary position inside the container 1.

[0014] The cleaning unit 11 includes a main body portion 21 provided with a driving means and the like, a tubular nozzle shaft 22 held by the main body portion 21, a cleaning nozzle 23 for injecting a cleaning liquid, a turning mechanism 24 provided at the tip of the nozzle shaft 22 for three-dimensionally turning the cleaning nozzle 23, and a feeding means 26 for pulling in and feeding out a high-pressure hose 25 for supplying the cleaning liquid. FIG. 4 is a view for explaining the nozzle shaft 22 and the cleaning nozzle 23 of the cleaning unit 11, and FIG. 4(a) shows the use state and FIG. 4(b) shows the non-use state. The nozzle shaft 22 is composed of a plurality of prismatic tubular members 22a having a substantially square cross section, and the tubular members 22a are connected in a telescopic structure. This enables expansion and contraction between the extended state shown in FIG. 4(a) and the contracted state shown in FIG. 4(b).

[0015] Figure 5 shows an enlarged view of the swivel mechanism 24, which comprises a bearing portion 27 fixed to the tip of the nozzle shaft 22, a swivel rotation shaft 28 supported by the bearing portion 27 and having the cleaning nozzle 23 at its end, and a drive shaft 29 provided parallel to the nozzle shaft 22. The bearing portion 27 is fixed to the tip of the nozzle shaft 22, and when the nozzle shaft 22 rotates, it rotates integrally with the central axis of the nozzle shaft 22. The bearing portion 27 is rotatably connected to the high-pressure hose 25 via a connecting means 27a such as a swivel joint, so that even if the bearing portion 27 rotates together with the nozzle shaft 22, the high-pressure hose 25 does not rotate.

[0016] The swivel shaft 28 is rotatably supported on the bearing portion 27, and the center of rotation of the swivel shaft 28 is perpendicular to the central axis of the nozzle shaft 22. One end of the swivel shaft 28 protrudes outside the bearing portion 27, and the cleaning nozzle 23 is connected to this protruding portion. With this configuration, when the pivot axis 28 rotates, the cleaning nozzle 23 rotates (rotates) around the center of rotation of the pivot axis 28. Furthermore, since the cleaning nozzle 23 is positioned offset from the central axis of the nozzle shaft 22, when the nozzle shaft 22 rotates, the cleaning nozzle 23 rotates (revolves) around the nozzle shaft 22. A liquid passage 30 is formed inside the bearing portion 27 and the swivel rotating shaft 28, connecting the high-pressure hose 25 and the cleaning nozzle 23. The cleaning liquid that flows through the high-pressure hose 25 flows through the liquid passage 30 before being sprayed from the cleaning nozzle 23.

[0017] The drive shaft 29 is provided parallel to the nozzle shaft 22 and, like the nozzle shaft 22, is made up of tubular members 29a with a roughly square cross-section connected by a telescopic structure, and can be extended and retracted between the extended state shown in Figure 4(a) and the shortened state shown in Figure 4(b). The end of the drive shaft 29 is rotatably supported by the bearing portion 27, and a first gear 31, which is a bevel gear, is provided at the tip of the drive shaft 29. On the other hand, a second gear 32, which is a bevel gear and meshes with the first gear 31, is provided at the end of the swivel rotating shaft 28 opposite to the cleaning nozzle 23. With this configuration, when the drive shaft 29 is rotated, the first gear 31 and the second gear 32 mesh together, causing the swivel shaft 28 to rotate, and the cleaning nozzle 23 to rotate on its own axis around the central axis of the swivel shaft 28.

[0018] According to the swivel mechanism 24 having the above configuration, since the end of the drive shaft 29 is pivotally supported by the bearing portion 27, when the nozzle shaft 22 is rotated, the cleaning nozzle 23 and the drive shaft 29 revolve around the nozzle shaft 22. When the drive shaft 29 is rotated, the pivot axis 28 rotates, causing the cleaning nozzle 23 to rotate on its own axis. By combining the rotation of the nozzle shaft 22 and the rotation of the drive shaft 29, the tip of the cleaning nozzle 23 can be moved in three dimensions.

[0019] Figure 6 shows a cross-sectional view of the main body 21 of the cleaning unit 11, and Figures 7(a), 7(b), and 7(c) show cross-sectional views of parts aa, 7(b), and 7(c), respectively, of parts aa, 7(b), and 7(c). Note that Figure 6 is not an accurate cross-sectional view as it is used to explain the gearbox below. The main body 21 comprises a housing 41, two ring-shaped retaining plates 42A and 42B fixed to the lower part of the housing 41, and two ring-shaped rotating plates 43A and 43B that hold the nozzle shaft 22 and the drive shaft 29. The housing 41 houses the supply mechanism 26 for the high-pressure hose 25, as well as the shortened nozzle shaft 22 and drive shaft 29. The retaining plates 42A and 42B described above have a configuration in which an upper retaining plate 42A fixed to the housing 41 and a lower retaining plate 42B are connected by a frame 42a. These retaining plates 42A and 42B have through holes 42b through which the nozzle shaft 22 and drive shaft 29 pass, and the center of the through hole 42b coincides with the center of the nozzle shaft 22. Furthermore, rollers 44 are provided on the lower surface of the upper retaining plate 42A and the upper surface of the lower retaining plate 42B, respectively, to support the rotating plates 43A and 43B.

[0020] Here, the rocking means 13 is composed of a support shaft 42c provided on the frame 42a, a bearing 13d provided on the rocking plate 13a that pivotally supports the support shaft 42c, and the up-and-down rocking motor 13c that rotates the support shaft 42c. When the up-and-down oscillating motor 13c rotates the support shaft 42c, the holding plates 42A and 42B oscillate, causing the cleaning nozzle 23 provided on the cleaning unit 11 to oscillate up and down or back and forth.

[0021] The rotating plates 43A and 43B described above consist of an upper rotating plate 43A supported by the roller 44 of the upper holding plate 42A, a lower rotating plate 43B supported by the roller 44 of the lower holding plate 42B, and a support column 43a connecting them. Through holes 43b are also formed in the center of the rotating plates 43A and 43B, through which the nozzle shaft 22 and drive shaft 29 pass, and the center of the through holes 43b coincides with the center of the nozzle shaft 22.

[0022] The upper retaining plate 42A is provided with a first motor 45, which serves as a first driving means for rotating the nozzle shaft 22. The drive shaft of the first motor 45 passes through the retaining plate 42A downwards, and a gear 45a is provided at its tip. Furthermore, a ring-shaped gear 46, having approximately the same diameter as the upper rotating plate 43A, is provided on the lower surface of the rotating plate 43A, and this gear 46 is designed to mesh with the gear 45a of the first motor 45. A through hole 46a is also formed in the center of the gear 46. With this configuration, when the first motor 45 rotates, the rotating plate 43A is rotated by the gears 45a and 46, and the nozzle shaft 22 and drive shaft 29 held by the rotating plates 43A and 43B rotate around the central axis of the nozzle shaft 22.

[0023] A second motor 47, serving as a second driving means, is provided on the upper surface of the upper rotating plate 43A, and a gearbox 48 for transmitting the drive of the second motor 47 to the drive shaft 29 is fixed to the lower surface. Multiple sets of rollers 49 are provided on the side of the gearbox 48 in the axial direction to support opposing corners of the nozzle shaft 22, and the nozzle shaft 22 moves axially back and forth along the rollers 49. The drive shaft of the second motor 47 is supported by the gearbox 48, and the first gear 47a is provided on the drive shaft. The gearbox 48 is also provided with a slide bearing 50 for holding the drive shaft 29 and a transmission shaft 51 for transmitting the driving force of the second motor 47 to the slide bearing 50.

[0024] The slide bearing 50 is configured to hold the drive shaft 29 so as not to rotate, while also allowing the drive shaft 29 to move in the axial direction, and a second gear 50a is formed on the outer circumferential surface of the slide bearing 50. The transmission shaft 51 is provided with a third gear 51a that meshes with the first gear 47a of the second motor 47, and a fourth gear 51b that meshes with the second gear 50a of the slide bearing 50. With this configuration, when the drive shaft of the second motor 47 is rotated, the transmission shaft 51 is rotated by the first gear 47a and the third gear 51a, and the slide bearing 50 is rotated by the fourth gear 51b and the second gear 50a, thereby rotating the drive shaft 29. Furthermore, the second motor 47 and the drive shaft 29 rotate integrally with the nozzle shaft 22 by the rotating plate 43, and at this time the drive shaft 29 revolves around the nozzle shaft 22.

[0025] The above-mentioned feeding means 26 includes a pulley 52 provided inside the housing 41, a winding roll 53 around which the high-pressure hose 25 is wound, and a third motor 54 for rotating the winding roll 53. As described above, the housing 41 has a space that can accommodate the shortened nozzle shaft 22 and drive shaft 29, and the pulley 52 is provided above this space. A high-pressure hose 25 connected to the swivel mechanism 24 protrudes from the rear end of the nozzle shaft 22, and this high-pressure hose 25 is wrapped around the pulley 52 and wound up by the winding roll 53. A pipe 4a is connected to the winding roll 53 via a swivel joint or the like between it and the cleaning fluid supply means 4 of the control unit 2B, and the cleaning fluid is supplied to the high-pressure hose 25 through the pipe 4a.

[0026] The third motor 54 described above rotates the winding roll 53 in forward and reverse directions, thereby pulling in and sending out the high-pressure hose 25. For example, when the nozzle shaft 22 of the cleaning unit 11 is in a shortened state, when the winding roll 53 feeds out the high-pressure hose 25, the tip of the high-pressure hose 25 pushes forward the swivel mechanism 24 at the tip of the nozzle shaft 22, causing the nozzle shaft 22 and the drive shaft 29 to extend. Conversely, when the nozzle shaft 22 of the cleaning unit 11 is extended, the winding roll 53 pulls in the high-pressure hose 25 from this position, causing the tip of the high-pressure hose 25 to pull the swivel mechanism 24 toward the main body 21, thereby shortening the nozzle shaft 22 and the drive shaft 29.

[0027] The method of using the cleaning device 2 having the above configuration will be described below. First, while the ingredients are being stirred in container 1, the washing device 2 is on standby at a position away from container 1. At this time, the nozzle shaft 22 and drive shaft 29 in the washing section 2A are shortened, and the washing unit 11 is stored inside the frame 14. From this state, once the mixing of ingredients in container 1 is complete, the operator moves the washing device 2 to a position adjacent to container 1 using the trolley 3, and positions container 1 and washing unit 2A using positioning means (not shown). Next, the operator uses the control panel to select the product number of the container 1 to be cleaned, and, taking into account the shape and position of the container 1 and the stirring blade 1c which have been entered in advance, instructs the control means to operate the cleaning unit 2A so that the cleaning nozzle 23 does not come into contact with the inner surface of the container 1 or the stirring blade 1c.

[0028] Then, the control means raises the cleaning unit 11 by the lifting means 12 according to the shape and size of the container 1, and the rocking means 13 rocks the cleaning unit 11 to the required angle. Next, the dispensing means 26 dispenses the high-pressure hose 25, which then presses against the swivel mechanism 24 of the nozzle shaft 22, causing the nozzle shaft 22 and the drive shaft 29 to extend from the shortened state shown in Figure 4(b) to the extended state shown in Figure 4(a). Specifically, the nozzle shaft 22 moves forward along a roller 49 provided adjacent to the gearbox 48, with multiple tubular members 22a sliding against each other to extend, and the drive shaft 29 moves forward along a slide bearing 50 provided on the gearbox 48, with multiple tubular members 29a sliding against each other to extend.

[0029] When the nozzle shaft 22 is extended in this manner, the cleaning nozzle 23 is positioned at the required location in the container 1. The control means then supplies cleaning fluid from the cleaning fluid supply means 4 according to the input operation command, and controls the operation of the cleaning unit 2A to start cleaning the inside of the container 1. At this time, the first and second motors 45 and 47 rotate the nozzle shaft 22 and drive shaft 29, respectively, so that the swivel mechanism 24 causes the cleaning nozzle 23 to rotate in three dimensions, allowing the cleaning fluid to be sprayed in any direction. In addition, the oscillating means 13 moves the cleaning nozzle 23 back and forth, left and right, up and down, to move the tip of the nozzle shaft 22 to the required position, thereby enabling the cleaning liquid to be sprayed onto the complexly shaped stirring blade 1c and the back side of the stirring blade 1c.

[0030] Once the cleaning of container 1 is complete, the dispensing means 26 retracts the high-pressure hose 25, and the swivel mechanism 24 to which the high-pressure hose 25 is connected is pulled toward the main body 21. As a result, the nozzle shaft 22 and the drive shaft 29 shorten from the extended state shown in Figure 4(a) to the shortened state shown in Figure 4(b), and the cleaning nozzle 23 detaches from the outside of the container 1. When the high-pressure hose 25 is further retracted, the shortened nozzle shaft 22 and drive shaft 29 slide along the roller 49 and slide bearing 50 and are housed inside the housing 41. Subsequently, the lifting mechanism 12 lowers the washing unit 11, and the operator moves the trolley 3, allowing the washing device 2 to be stored at a position away from the container 1.

[0031] Thus, according to the cleaning device 2 of this embodiment, the nozzle shaft 22 can be shortened when not in use, allowing for compact storage. Furthermore, when cleaning the container 1 with the cleaning device 2, the cleaning unit 11 is brought close to the material input hole 1b of the container 1 while it remains in its shortened state, and the nozzle shaft 22 is extended in that state, allowing the cleaning nozzle 23 to be inserted into the container 1. In this case, when the cleaning nozzle 23 enters the container 1, there is no need to unnecessarily move the cleaning unit 11 upwards, and the main body 21 can be prevented from coming into contact with the ceiling of the factory where the container 1 is placed. Furthermore, in factories with low ceilings, it was not possible to use the cleaning device 2 with a long nozzle shaft 22. However, by making the nozzle shaft 22 extendable and retractable, it became possible to insert the cleaning nozzle 23 into the container 1.

[0032] In the above embodiment, the pivoting shaft 28 of the pivoting mechanism 24 is driven by the second motor 47 via the drive shaft 29. However, a motor may be installed inside the pivoting mechanism 24 to directly rotate the pivoting shaft 28. In the above embodiment, the feeding means 26 extends and retracts the high-pressure hose 25, thereby causing the nozzle shaft 22 and drive shaft 29 to extend and retract. However, the feeding means may also be configured to extend and retract the nozzle shaft 22 and drive shaft 29 using an extension and retraction mechanism, thereby causing the high-pressure hose 25 to extend and retract. Furthermore, in the above embodiment, the cleaning device 2 is used to clean the inside of the container 1 by inserting the cleaning nozzle 23 into the container 1, but it can also be used for other purposes. In the above embodiment, the cleaning unit 2A and the control unit 2B are movable on separate trolleys 3, but they may be moved as a single unit, or the cleaning liquid supply means 4 and the control means 5 may be installed in predetermined positions, making only the cleaning unit 11 movable. [Explanation of Symbols]

[0033] 1. Container 2. Washing device 4. Cleaning solution supply means 11. Cleaning unit 21 Main body 22 Nozzle shaft 22a Tubular member 23 Cleaning nozzle 23 24 Swivel mechanism 25 High-pressure hose 26 Feed-out mechanism 27 Bearing section 28 Swivel axis 29 Drive shaft 29a Tubular member 45 First motor (first driving means) 47. Second motor (second driving means)

Claims

1. A cleaning device comprising a tubular nozzle shaft with a main body at its base end, a cleaning nozzle for spraying cleaning fluid, a swivel mechanism provided at the tip of the nozzle shaft for rotating the cleaning nozzle in three dimensions, a driving means for driving the swivel mechanism, and a cleaning fluid supply means for supplying cleaning fluid to the cleaning nozzle, The nozzle shaft is provided to be extendable and retractable by a telescopic mechanism consisting of multiple tubular members, and a high-pressure hose connected to the cleaning fluid supply means is provided inside. The above-mentioned swivel mechanism comprises a bearing portion fixed to the tip of the nozzle shaft, and a swivel rotating shaft that is pivotally supported by the bearing portion in a direction perpendicular to the nozzle shaft, with the cleaning nozzle provided at its end. The bearing portion is rotatably connected to the tip of the high-pressure hose. The cleaning device is characterized in that the driving means comprises a first driving means for rotating the bearing portion together with the nozzle shaft, and a second driving means for rotating the pivot rotation shaft.

2. The main body is equipped with a dispensing mechanism for drawing in and dispensing the high-pressure hose. When the above-mentioned dispensing mechanism retracts the high-pressure hose, the swivel mechanism moves toward the main body along with the high-pressure hose, shortening the nozzle shaft. The cleaning apparatus according to claim 1, characterized in that when the above-mentioned dispensing means dispenses the high-pressure hose, the swivel mechanism moves in a direction away from the main body together with the high-pressure hose, and the nozzle shaft extends.

3. The above-mentioned swivel mechanism comprises a drive shaft provided parallel to the nozzle shaft, a first gear provided at the tip of the drive shaft, and a second gear provided on the swivel rotation axis and meshing with the first gear. The cleaning device according to claim 1, wherein the drive shaft is provided so as to be extendable and retractable by a telescopic mechanism, and the second drive means rotates the pivot axis by rotating the drive shaft.

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