Goods transfer vehicle based on intelligent warehousing system and use method

Abstract

The invention discloses a cargo transfer vehicle based on an intelligent warehousing system and a using method, and belongs to the field of cargo transfer vehicles. A cargo transfer vehicle based on an intelligent warehousing system comprises a vehicle body, a containing box is installed at the top of the vehicle body, a mounting base is fixed to the position, located on one side of the containing box, of the top of the vehicle body, and a taking piece and movable protective cloth are fixedly installed on the mounting base and arranged above the containing box; the bottom of the containing box can be covered and protected through the arranged protective cloth, goods in the containing box are closed, the good protective effect is achieved, the influence of rain and snow weather during outdoor transportation is avoided, meanwhile, the air bags can be expanded in the covering state, elastic protection is conducted on the inner walls of the periphery of the containing box, and the safety of the goods is improved. The goods are prevented from shaking and colliding during transportation, the situation that the goods are damaged during transportation is reduced, the protective cloth is conveniently stored and arranged, and use is convenient and fast.

Description

Technical Field

[0001] The present invention relates to the technical field of cargo transfer vehicles, and in particular to a cargo transfer vehicle based on an intelligent warehousing system and a use method thereof. Background Art

[0002] Transfer vehicles are often needed in material warehousing to quickly transfer materials. Existing transfer vehicles for warehousing are usually composed of a walking mechanism and a transfer platform. They have a simple structure, are convenient and practical, and are easy to transfer goods. With the development of intelligent science and technology, by installing a robotic arm on the vehicle's mobile platform and equipping it with an identification system, the goods can be automatically clamped and placed on the transfer vehicle, effectively improving work efficiency and saving the labor intensity of staff.

[0003] When transferring goods, a transfer vehicle generally needs to transport the picked-up and placed goods to another workshop warehouse. When driving outdoors in the factory, due to the influence of weather, the goods in the storage box of the transfer vehicle are generally not covered and are wetted by rain and snow, causing damage to the goods. For this reason, we propose a cargo transfer vehicle based on an intelligent warehousing system and a method of use to solve the above-mentioned problems. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the goods in the storage box of the transfer vehicle are generally lacking in coverage and are wetted by rain and snow, causing damage to the goods, and to propose a cargo transfer vehicle based on an intelligent warehousing system and a method of use.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A cargo transfer vehicle based on an intelligent warehousing system comprises a vehicle body, a placement box is installed on the top of the vehicle body, a mounting seat is fixed on the top of the vehicle body located on one side of the placement box, a picking piece is fixedly installed on the mounting seat, a movable protective cloth is arranged above the placement box; an airbag is arranged on the inner wall surfaces around the placement box; a rotating cylinder is installed on the top surface of the protective cloth, and the rotating cylinder is in contact with the surface of the protective cloth; when the protective cloth moves to the left, the bottom of the placement box is covered and protected, and the airbag is inflated at the same time, and the cargo filled in the placement box is elastically limited, and when the protective cloth moves to the right, it drives the rotating cylinder to rotate synchronously, and the protective cloth is tensioned and limited.

[0006] Preferably, one end of the protective cloth is fixedly connected to a movable plate, both ends of the movable plate are equipped with slide seats, the slide seats are slidably connected to slide rails, the slide rails are fixedly installed on the top surface of the placement box, and the bottom surface of the movable plate is fixedly connected to a fixed plate.

[0007] Preferably, a side surface of the fixed plate is fixedly connected to a driving unit, one end of the driving unit is fixedly connected to a first side plate, the first side plate is fixedly mounted on the top surface of the vehicle body, one side surface of the first side plate is fixedly connected to an inclined plate, and the driving unit is embedded and mounted on the inclined plate.

[0008] Preferably, a storage tube is provided at one end of the protective cloth, a spiral spring is provided inside the storage tube, one end of the spiral spring is fixedly connected to the protective cloth, the protective cloth slides through the storage tube, one end of the storage tube is fixedly connected to a second side plate, and the bottom of the second side plate is fixedly connected to the vehicle body.

[0009] Preferably, the surface of the fixed plate located on one side of the driving part is fixedly connected to a first connecting cylinder, the interior of the first connecting cylinder is slidably connected to a first piston, a side of the first piston is fixedly connected to a first sliding rod, the end of the first sliding rod is fixedly connected to the first side plate, and a first air cavity is opened inside the first sliding rod and the first piston.

[0010] Preferably, one end of the first sliding rod is fixedly connected to an air supply pipe, and the end of the air supply pipe passes through the first side plate and the placement box to be connected to the airbag.

[0011] Preferably, a side surface of the fixing plate is located on the other side of the driving part and is fixedly connected to a second connecting tube, one end of the second connecting tube is fixedly connected to an air inlet, and a one-way valve is provided on the air inlet.

[0012] Preferably, the second connecting cylinder is slidably connected to the inside of a second piston, a second sliding rod is fixedly connected to one side of the second piston, an end of the second sliding rod is fixedly connected to the first side plate, a valve is provided inside the second piston, a second air cavity is opened inside the second piston and the second air cavity, and a delivery pipe is fixedly connected to one end of the second sliding rod.

[0013] Preferably, the end of the delivery pipe passes through the first side plate and is equipped with a hollow shaft through a rotating joint. The hollow shaft is rotatably connected to the second side plate through a bearing, and the end of the hollow shaft is fixedly connected to the rotating cylinder.

[0014] A method for using a cargo transfer vehicle based on an intelligent warehousing system mainly includes the following steps: Step A: Move the vehicle body to the cargo placement area in advance. When taking cargo, the manipulator automatically takes the cargo in the placement area and then places it inside the placement box to realize the automatic loading and unloading operation of cargo. Through the protective cloth set on the placement box, when the cargo is placed in the placement box, the protective cloth is driven by the driving part to move and cover the top of the placement box; Step B: When the protective cloth covers the top of the storage box, it drives the air to be compressed and transported to the airbag, causing the airbag to expand. When the protective cloth is removed from the storage box, part of the collected gas is transported to the rotating cylinder, and the gas is sprayed out through the rotating cylinder, thereby cleaning the water stains remaining on the top surface of the protective cloth and accelerating the diversion.

[0015] Compared with the prior art, the present invention provides a cargo transfer vehicle based on an intelligent warehousing system, which has the following beneficial effects: 1. A cargo transfer vehicle based on an intelligent warehousing system has a protective cloth arranged on a placement box. When the cargo is placed in the placement box, the protective cloth is driven by a driving member to move and cover the top of the placement box, thereby protecting the placed cargo and preventing the transfer vehicle from being damaged by rain or snow during handling and transportation, thereby improving the quality of cargo transfer and transportation.

[0016] 2. This cargo transfer vehicle based on the intelligent warehousing system, when the protective cloth covers the top of the storage box, it drives the air to be compressed and transported to the airbag, causing the airbag to expand, thereby protecting the cargo placed in the storage box, preventing the vehicle from colliding with the inner wall of the storage box during driving, causing damage to the cargo.

[0017] 3. This cargo transfer vehicle based on the intelligent warehousing system transports part of the collected gas to the rotating cylinder when the protective cloth is removed from the placement box, and sprays the gas through the rotating cylinder, thereby cleaning the water stains remaining on the top surface of the protective cloth and accelerating the diversion, making it convenient for storage and sorting.

[0018] The parts not involved in the device are the same as the prior art or can be implemented by the prior art. The present invention can cover and protect the bottom of the storage box by setting up a protective cloth, so that the goods inside the storage box are closed, which has a good protective effect and avoids the influence of rain and snow during outdoor transportation. At the same time, the airbag can be inflated in the covering state to provide elastic protection on the inner walls around the storage box to avoid shaking and collision of the goods during transportation, reduce the occurrence of damage to the goods during transportation, and facilitate the storage and arrangement of the protective cloth. It is convenient and quick to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a cargo transfer vehicle based on an intelligent warehousing system proposed by the present invention; Figure 2 This is a schematic diagram of a top view of a cargo transfer vehicle based on an intelligent warehousing system proposed by the present invention; Figure 3 This is a schematic side cross-sectional view of a cargo transfer vehicle based on an intelligent warehousing system proposed by the present invention; Figure 4A schematic diagram of a top-view cross-sectional structure of a cargo transfer vehicle based on an intelligent warehousing system proposed by the present invention; Figure 5 The present invention proposes Figure 4 A schematic diagram of the enlarged structure of the middle A area; Figure 6 This is another side sectional structural schematic diagram of a cargo transfer vehicle based on an intelligent warehousing system proposed by the present invention; Figure 7 The present invention proposes Figure 6 Schematic diagram of the enlarged structure of the middle B area; Figure 8 This is a schematic diagram of the partial three-dimensional structure of a slide rail in a cargo transfer vehicle based on an intelligent warehousing system proposed by the present invention.

[0020] In the figure: 1. vehicle body; 2. placement box; 3. mounting seat; 31. pick-up piece; 4. protective cloth; 41. movable plate; 42. slide seat; 43. fixed plate; 44. slide rail; 441. driving part; 45. first side plate; 46. inclined plate; 51. storage cylinder; 52. spiral spring; 53. second side plate; 61. first connecting cylinder; 62. first piston; 63. first slide rod; 64. first air cavity; 65. air delivery pipe; 66. air bag; 71. second connecting cylinder; 72. air inlet; 73. second piston; 74. second slide rod; 75. valve; 76. second air cavity; 77. delivery pipe; 78. hollow shaft; 79. rotating cylinder; 791. jet nozzle. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] In the description of the present invention, the term "multiple" refers to two or more. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation of the present invention. The terms "connection", "installation", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more.

[0023] In the description of this specification, the description of the terms "one embodiment", "some implementations", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0024] Reference Figure 1-Figure 8 A cargo transfer vehicle based on an intelligent warehousing system includes a vehicle body 1, a placement box 2 is installed on the top of the vehicle body 1, a mounting seat 3 is fixed on the top of the vehicle body 1 on one side of the placement box 2, a picking piece 31 is fixed on the mounting seat 3, a movable protective cloth 4 is arranged above the placement box 2; an airbag 66 is arranged on the inner wall surface around the placement box 2; a rotating cylinder 79 is installed on the top surface of the protective cloth 4, and the rotating cylinder 79 is in contact with the surface of the protective cloth 4; when the protective cloth 4 moves to the left, the bottom of the placement box 2 is covered and protected, and the airbag 66 is inflated at the same time, and the cargo filled in the placement box 2 is elastically limited. When the protective cloth 4 moves to the right, it drives the rotating cylinder 79 to rotate synchronously, and the protective cloth 4 is tensioned and limited.

[0025] When in use, the vehicle body 1 is moved to the cargo placement area in advance, wherein the picking-up member 31 includes a mechanical arm and a mechanical hand, and a scanning control system is arranged in the picking-up member 31. When picking up cargo, the mechanical hand automatically picks up cargo in the placement area, and then places it inside the placement box 2, so as to realize automatic cargo loading and unloading operation. This is a prior art and will not be elaborated here. Considering that the storage area for placing cargo in the existing storage and transfer vehicles of this type is not covered, the cargo transfer and transportation between warehouses in the factory area needs to pass through outdoor venues. Some special cargo is easily affected by rainy and snowy weather or sun exposure during outdoor walking, causing damage to the cargo. Therefore, when designing this scheme, a protective cloth 4 is arranged on the placement box 2. After the cargo is placed in the placement box 2, the protective cloth 4 is driven to move by the driving member to It covers the top of the placement box 2, thereby protecting the placed goods and preventing the transfer vehicle from being damaged by rain and snow during the handling and transportation process, thereby improving the quality of goods during transportation and transportation. When the protective cloth 4 covers and protects the top of the placement box 2, it drives the air compression and transports it to the airbag 66, causing the airbag 66 to expand, thereby protecting the goods placed in the placement box 2 and preventing the vehicle from colliding with the inner wall of the placement box 2 during driving, causing damage to the goods. When the protective cloth 4 is removed from the placement box 2, part of the collected gas is transported to the rotating cylinder 79, and the gas is sprayed through the rotating cylinder 79, thereby cleaning the water stains remaining on the top surface of the protective cloth 4 and accelerating the diversion, which is convenient for storage and sorting. At the same time, the rotating cylinder 79 can be used to limit the protective cloth 4 in the covering state, so that the protective cloth 4 is flatter when covering.

[0026] In a preferred embodiment, referring to Figure 3 , Figure 4 and Figure 8 One end of the protective cloth 4 is fixedly connected to a movable plate 41, both ends of the movable plate 41 are installed with slide seats 42, the slide seats 42 are slidably connected to the slide rails 44, the slide rails 44 are fixedly installed on the top surface of the placement box 2, the bottom surface of the movable plate 41 is fixedly connected to a fixed plate 43, one side of the fixed plate 43 is fixedly connected to a driving unit 441, one end of the driving unit 441 is fixedly connected to a first side plate 45, the first side plate 45 is fixedly installed on the top surface of the vehicle body 1, one side of the first side plate 45 is fixedly connected to an inclined plate 46, and the driving unit 441 is embedded and installed on the inclined plate 46.

[0027] The driving part 441 uses a driving source such as an electric push rod instead of a driving source. When in use, by starting the driving part 441, the movable plate 41 can be driven to move, so that the protective cloth 4 is moved out from the inside of the storage tube 51, and then covers the top surface of the placement box 2 to cover and protect the goods loaded in the placement box 2. When the vehicle is driving in an environment outside the warehouse, it can effectively avoid the impact of rain, snow or sun exposure on the goods. The slide seat 42 slides on the surface of the slide rail 44 to limit the movement of the moving slide rail 44, thereby improving the stability of the protective cloth 4 during movement, and cooperating with the rotating cylinder 79 to make the protective cloth 4 horizontally fit on the top of the placement box 2 in the covering state.

[0028] In a preferred embodiment, referring to Figure 6 A storage tube 51 is provided at one end of the protective cloth 4, and a spiral spring 52 is provided inside the storage tube 51. One end of the spiral spring 52 is fixedly connected to the protective cloth 4. The protective cloth 4 slides through the storage tube 51. One end of the storage tube 51 is fixedly connected to a second side plate 53, and the bottom of the second side plate 53 is fixedly connected to the vehicle body 1.

[0029] The storage tube 51 is convenient for storing the protective cloth 4. When the protective cloth 4 does not need to be covered, the spiral spring 52 in the storage tube 51 is elastically pulled back to retract the protective cloth 4 into the storage tube 51 for winding. It is convenient and quick to use and does not affect the subsequent picking up and placement of goods by the transfer vehicle.

[0030] In a preferred embodiment, referring to Figure 4 and Figure 6 The surface of the fixed plate 43 is located on one side of the driving part 441 and is fixedly connected with a first connecting cylinder 61. A first piston 62 is slidably connected inside the first connecting cylinder 61. A first sliding rod 63 is fixedly connected to one side of the first piston 62. An end of the first sliding rod 63 is fixedly connected to the first side plate 45. A first air cavity 64 is provided inside the first sliding rod 63 and the first piston 62. An end of the first sliding rod 63 is fixedly connected with an air delivery pipe 65. An end of the air delivery pipe 65 passes through the first side plate 45 and the placement box 2 and is connected with the air bag 66. The first slide bar 63 and the first piston 62 are internally provided with a first air cavity 64 which is connected with the interior of the first connecting tube 61. When the protective cloth 4 is displaced to the left, the first piston 62 squeezes the air inside the first connecting tube 61. The air is then transported to the interior of the airbag 66 through the first slide bar 63, causing the airbag 66 to expand. When the airbag 66 expands, the surface in contact with the cargo presents equally spaced grid protrusions, which better fits the cargo stacked inside and has a good buffering and protective effect, preventing the cargo from colliding and shaking during transportation. At the same time, when the protective cloth 4 is uncovered, the gas in the airbag 66 flows back, causing a gap between the cargo in the placement box 2 and the side surface of the airbag 66, making it convenient for the subsequent robot to pick up the cargo.

[0031] In a preferred embodiment, referring to Figure 2 , Figure 4 and Figure 5One side of the fixed plate 43 is located on the other side of the driving part 441 and is fixedly connected with a second connecting cylinder 71. One end of the second connecting cylinder 71 is fixedly connected with an air inlet 72. A one-way valve is provided on the air inlet 72. The second connecting cylinder 71 is slidably connected with a second piston 73 inside. One side of the second piston 73 is fixedly connected with a second sliding rod 74. The end of the second sliding rod 74 is fixedly connected to the first side plate 45. A valve 75 is provided inside the second piston 73. A second air cavity 76 is opened inside the second piston 73 and the second air cavity 76. One end of the second sliding rod 74 is fixedly connected with a delivery pipe 77. The end of the delivery pipe 77 passes through the first side plate 45 and is installed with a hollow shaft 78 through a rotating joint. The hollow shaft 78 is rotatably connected to the second side plate 53 through a bearing, and the end of the hollow shaft 78 is fixedly connected to the rotating cylinder 79.

[0032] When the protective cloth 4 moves to the right and is rolled up, the gas pre-collected in the second connecting cylinder 71 can be squeezed and transported to the rotating cylinder 79, and then sprayed out through a plurality of air jets 791 opened on the rotating cylinder 79, thereby cleaning the rain or snowflakes falling on the top surface of the protective cloth 4 in rainy and snowy weather, thereby facilitating the collection and arrangement of the protective cloth 4. At the same time, the surface of the rotating cylinder 79 fits tightly with the top surface of the protective cloth 4, and the rotating cylinder 79 is driven to rotate synchronously when the protective cloth 4 is displaced, which limits the protective cloth 4 without affecting the stretching and contraction of the protective cloth 4, so that the protective cloth 4 is horizontal and flat in the covering state, and better fits with the top of the placement box 2.

[0033] It should be noted that the air outlet of the air jet 791 is located in the middle of the protective cloth 4 and is tilted toward both sides to prevent foreign matter from being blown into the interior of the placement box 2. The valve 75 is a one-way valve.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cargo transfer vehicle based on an intelligent warehousing system, comprising a vehicle body (1), a placement box (2) being installed on the top of the vehicle body (1), a mounting seat (3) being fixed on the top of the vehicle body (1) and located on one side of the placement box (2), a picking piece (31) being fixed on the mounting seat (3), and characterized in that: A movable protective cloth (4) is arranged above the placement box (2); Air bags (66) are arranged on the inner wall surfaces around the placement box (2); A rotating cylinder (79) is mounted on the top surface of the protective cloth (4), wherein the rotating cylinder (79) is in contact with the surface of the protective cloth (4); When the protective cloth (4) moves to the left, it covers and protects the bottom of the storage box (2), and at the same time inflates the airbag (66) to elastically limit the position of the goods filled in the storage box (2). When the protective cloth (4) moves to the right, it drives the rotating cylinder (79) to rotate synchronously, thereby tensioning and limiting the position of the protective cloth (4).

2. The cargo transfer vehicle based on the intelligent warehousing system according to claim 1 is characterized in that: One end of the protective cloth (4) is fixedly connected to a movable plate (41), both ends of the movable plate (41) are provided with slide seats (42), the slide seats (42) are slidably connected to a slide rail (44), the slide rail (44) is fixedly installed on the top surface of the placement box (2), and the bottom surface of the movable plate (41) is fixedly connected to a fixed plate (43).

3. The cargo transfer vehicle based on the intelligent warehousing system according to claim 2 is characterized in that: A driving unit (441) is fixedly connected to one side of the fixing plate (43), one end of the driving unit (441) is fixedly connected to a first side plate (45), the first side plate (45) is fixedly mounted on the top surface of the vehicle body (1), one side of the first side plate (45) is fixedly connected to an inclined plate (46), and the driving unit (441) is embedded and mounted on the inclined plate (46).

4. The cargo transfer vehicle based on the intelligent warehousing system according to claim 3 is characterized in that: A storage tube (51) is provided at one end of the protective cloth (4), a spiral spring (52) is provided inside the storage tube (51), one end of the spiral spring (52) is fixedly connected to the protective cloth (4), the protective cloth (4) slides through the storage tube (51), one end of the storage tube (51) is fixedly connected to a second side plate (53), and the bottom of the second side plate (53) is fixedly connected to the vehicle body (1).

5. The cargo transfer vehicle based on the intelligent warehousing system according to claim 3 is characterized in that: The surface of the fixed plate (43) is located on one side of the driving part (441) and is fixedly connected to a first connecting tube (61); a first piston (62) is slidably connected inside the first connecting tube (61); a first sliding rod (63) is fixedly connected to a side surface of the first piston (62); an end of the first sliding rod (63) is fixedly connected to the first side plate (45); a first air cavity (64) is provided inside the first sliding rod (63) and the first piston (62).

6. The cargo transfer vehicle based on the intelligent warehousing system according to claim 5 is characterized in that: One end of the first sliding rod (63) is fixedly connected to an air supply pipe (65), and an end of the air supply pipe (65) passes through the first side plate (45) and the placement box (2) and is connected to the air bag (66).

7. The cargo transfer vehicle based on the intelligent warehousing system according to claim 3 is characterized in that: One side of the fixing plate (43) is fixedly connected to a second connecting tube (71) located on the other side of the driving part (441), one end of the second connecting tube (71) is fixedly connected to an air inlet (72), and a one-way valve is provided on the air inlet (72).

8. The cargo transfer vehicle based on the intelligent warehousing system according to claim 7 is characterized in that: A second piston (73) is slidably connected inside the second connecting cylinder (71), a second sliding rod (74) is fixedly connected to one side of the second piston (73), an end of the second sliding rod (74) is fixedly connected to the first side plate (45), a valve (75) is provided inside the second piston (73), a second air cavity (76) is provided inside the second piston (73) and the second air cavity (76), and a delivery pipe (77) is fixedly connected to one end of the second sliding rod (74).

9. The cargo transfer vehicle based on the intelligent warehousing system according to claim 8, characterized in that: The end of the delivery pipe (77) passes through the first side plate (45) and is provided with a hollow shaft (78) via a rotary joint. The hollow shaft (78) is rotatably connected to the second side plate (53) via a bearing. The end of the hollow shaft (78) is fixedly connected to the rotating cylinder (79).

10. A method for using a cargo transfer vehicle based on an intelligent warehousing system, comprising the cargo transfer vehicle based on an intelligent warehousing system according to claim 5 or 7, characterized in that: The main steps include: Step A: The vehicle body (1) is moved to the cargo placement area in advance. When taking cargo, the cargo in the placement area is automatically taken by a robot arm and then placed inside the placement box (2), thereby realizing the automatic loading and unloading operation of cargo. After the cargo is placed in the placement box (2), the protective cloth (4) is driven by a driving member to move and cover the top of the placement box (2); Step B: When the protective cloth (4) covers and protects the top of the placement box (2), it drives the air to be compressed and transported to the airbag (66), causing the airbag (66) to expand. When the protective cloth (4) is removed from the placement box (2), part of the collected gas is transported to the rotating cylinder (79), and the gas is ejected through the rotating cylinder (79), thereby cleaning the water stains remaining on the top surface of the protective cloth (4) and accelerating the diversion.

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