Transportation reversing mechanism for manipulator

Abstract

The utility model relates to a transportation reversing mechanism for a manipulator. The device comprises a workbench, gear teeth are fixedly connected to the middle of the workbench. A first vertical plate is fixedly connected to the bottom of the workbench; the middle part of the first vertical plate is fixedly connected with an electric push cylinder; the output end of the electric push cylinder is fixedly connected with a sliding block. The sliding block is in sliding connection with the workbench. The middle of the sliding block is rotationally connected with a gear. The gear is meshed with the gear teeth; the middle part of the gear is fixedly connected with a connecting rod; the middle part of the connecting rod is fixedly connected with a supporting seat; a mechanical arm body is fixedly connected to the top of the supporting seat; an electric push cylinder pushes a sliding block to enable a gear and gear teeth to be meshed, so that the mechanical arm body rotates along with a connecting rod, direction conversion of the device in the mechanical arm body conveying process is achieved, the mechanical arm body can convey workpieces to working faces with more spatial layouts, the range of the workpiece conveying path of the mechanical arm body is expanded, and the working efficiency is improved. And the adaptability of the mechanical arm body to various complex production environments is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of automated production equipment, in particular to a transport reversing mechanism for a manipulator. Background Art

[0002] A manipulator is a device that can simulate the actions of human hands in grasping, handling, and operating. It is usually composed of mechanical structure, drive system, control system, etc. They are widely used in various production lines and processes to improve production efficiency, reduce labor intensity, and ensure product quality and safe production.

[0003] For example, in the field of precision manufacturing, robots are widely used due to their high precision and high stability. They can accurately grasp, place and assemble tiny parts, ensuring product quality and production efficiency.

[0004] Existing robots usually transport workpieces back and forth between the tops of two working surfaces when working. It has been found in usage observations that when the workpiece needs to be transported from the top of a working surface to the bottom of another working surface, the traditional robots cannot meet production needs.

[0005] Therefore, in order to solve the above problems, a transport reversing mechanism for a robot is proposed. Utility Model Content

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the problem in the prior art that the manipulator cannot transport the workpiece from the top of a working surface to the bottom of another working surface.

[0007] In order to solve the above technical problems, the utility model provides a transport reversing mechanism for a robot, comprising a workbench; a gear is fixedly connected to the middle part of the workbench; a first vertical plate is fixedly connected to the bottom of the workbench; an electric push cylinder is fixedly connected to the middle part of the first vertical plate; a slider is fixedly connected to the output end of the electric push cylinder; the slider is slidingly connected to the workbench; a gear is rotatably connected to the middle part of the slider; the gear and the gear teeth are in a meshing relationship; a connecting rod is fixedly connected to the middle part of the gear; a support seat is fixedly connected to the middle part of the connecting rod; a robot body is fixedly connected to the top of the support seat; the electric push cylinder pushes the slider to cause the gear and the gear teeth to mesh, so that the robot body rotates with the connecting rod, thereby realizing the device to change the direction of the robot body during transportation, so that the robot body can transport workpieces to more spatially arranged work surfaces, expand the range of the robot body's workpiece transmission path, and enhance the robot body's adaptability to various complex production environments.

[0008] In one embodiment of the utility model, a plurality of spring telescopic rods are fixedly connected to the top of the slider; an oil storage bag is fixedly connected to the top of the spring telescopic rod; a rotating wheel is rotatably connected to the top of the oil storage bag; the rotating wheel will absorb the lubricating oil in the oil storage bag to lubricate the gear teeth, thereby realizing lubrication of the gear teeth by the device, ensuring smooth meshing between the gears and the gear teeth, and at the same time, when the rotating wheel and the gear teeth are in contact, the surface of the gear teeth will be squeezed under the action of the elastic force of the spring telescopic rod, ensuring that the rotating wheel can be tightly attached to the surface of the gear teeth when rotating, thereby improving the adaptability of the rotating wheel to the gear tooth surface and enhancing the lubrication effect of the rotating wheel on the gear teeth.

[0009] In one embodiment of the utility model, a first connecting plate is fixedly connected to the middle part of the oil storage bag; the end of the first connecting plate is rotatably connected to the second connecting plate and is connected through a torsion spring; the middle part of the second connecting plate is rotatably connected to a roller; a plurality of bristles are fixedly connected to the middle part of the roller; through the cooperation of the roller and the bristles, the roller and the gear teeth will rotate when they come into contact and the bristles will apply the lubricating oil to the surface of the gear teeth, thereby increasing the uniformity of the distribution of the lubricating oil on the surface of the gear teeth and enhancing the lubricating effect of the device on the gear teeth.

[0010] In one embodiment of the utility model, a second vertical plate is fixedly connected to the bottom of the workbench; the second vertical plate is arranged corresponding to the first vertical plate; a damping spring is fixedly connected to the middle of the second vertical plate; and a baffle is fixedly connected to the end of the damping spring; through the cooperation of the damping spring and the baffle, when the slider and the baffle come into contact, the damping spring absorbs the kinetic energy of the slider, reduces the moving speed of the slider, and reduces the possibility of splashing of lubricating oil on the gear surface.

[0011] In one embodiment of the utility model, a plurality of first magnets are fixedly connected to the middle portion of the baffle; a plurality of second magnets are fixedly connected to the middle portion of the slider; the first magnets and the second magnets are arranged correspondingly; through the cooperation of the first magnets and the second magnets, when the slider approaches the baffle, the speed will be reduced under the action of the magnetic force between the first magnets and the second magnets, thereby enhancing the deceleration effect of the device on the slider.

[0012] In one embodiment of the utility model, a rubber pad is fixedly connected to the middle part of the baffle; the surface of the rubber pad is an arc-shaped structure; by providing the rubber pad, the rubber pad can absorb the impact generated when the baffle and the slider come into contact, reduce the impact on the baffle, play a protective role on the baffle, and extend the service life of the baffle.

[0013] In one embodiment of the utility model, a collection box is fixedly connected to the middle of the workbench; the collection box is located at the bottom of the gear; by setting up the collection box, the collection box will collect the lubricating oil splashed when the gear rotates, reduce the pollution of the lubricating oil to the working environment, and improve the utilization rate of the lubricating oil by the device.

[0014] In one embodiment of the utility model, a sponge is fixedly connected to the bottom of the collection box; the sponge is located at the bottom of the gear; by providing the sponge, the sponge will absorb the lubricating oil that falls into the collection box, reduce the range of lubricating oil splashing, and further reduce the pollution of the lubricating oil to the working environment.

[0015] The above technical solution of the utility model has the following advantages compared with the prior art:

[0016] 1. The utility model describes a transport reversing mechanism for a manipulator. The electric push cylinder pushes the slider to engage the gears and the gear teeth so that the manipulator body rotates along with the connecting rod, thereby realizing the device to change the direction of the manipulator body during transportation, so that the manipulator body can transport workpieces to work surfaces with more spatial layouts, expand the range of the manipulator body's workpiece transmission path, and enhance the manipulator body's ability to adapt to various complex production environments.

[0017] 2. In the transport reversing mechanism for a manipulator described in the utility model, the rotating wheel will absorb the lubricating oil in the oil storage bag to lubricate the gear teeth, thereby realizing the lubrication of the gear teeth by the device and ensuring smooth meshing between the gears and the gear teeth. At the same time, when the rotating wheel and the gear teeth are in contact, the surface of the gear teeth will be squeezed under the elastic force of the spring telescopic rod, ensuring that the rotating wheel can tightly adhere to the surface of the gear teeth when rotating, thereby improving the adaptability of the rotating wheel to the surface of the gear teeth and enhancing the lubricating effect of the rotating wheel on the gear teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments of the utility model in combination with the accompanying drawings.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the gear in the utility model;

[0021] Figure 3 It is a structural schematic diagram of the second magnet in the utility model;

[0022] Figure 4 It is a structural schematic diagram of the first connecting plate in the utility model;

[0023] Figure 5 It is a structural schematic diagram of the middle baffle of the utility model.

[0024] Explanation of the reference numerals in the drawings in the specification: 1. workbench; 12. gear teeth; 13. first vertical plate; 14. electric push cylinder; 15. slider; 16. gear; 17. connecting rod; 18. support seat; 19. robot arm body; 2. spring telescopic rod; 22. oil storage bag; 23. rotating wheel; 3. first connecting plate; 32. second connecting plate; 33. roller; 34. bristles; 4. second vertical plate; 42. damping spring; 43. baffle; 5. first magnet; 52. second magnet; 6. rubber pad; 7. collection box; 8. sponge. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0026] Reference Figure 1 and Figure 2As shown, a transport reversing mechanism for a manipulator of the utility model comprises a workbench 1; a gear 12 is fixedly connected to the middle of the workbench 1; a first vertical plate 13 is fixedly connected to the bottom of the workbench 1; an electric push cylinder 14 is fixedly connected to the middle of the first vertical plate 13; a slider 15 is fixedly connected to the output end of the electric push cylinder 14; the slider 15 is slidably connected to the workbench 1; a gear 16 is rotatably connected to the middle of the slider 15; the gear 16 is in meshing relationship with the gear 12; a connecting rod is fixedly connected to the middle of the gear 16 17; a support seat 18 is fixedly connected to the middle of the connecting rod 17; a mechanical arm body 19 is fixedly connected to the top of the support seat 18; when working, the starting device drives the electric push cylinder 14 to start, and after the electric push cylinder 14 is started, the slider 15 slides along the workbench 1, and when the slider 15 slides, it drives the gear 16 to move together and makes the gear 16 and the gear teeth 12 mesh, at this time, the gear 16 will rotate and move with the slider 15, and when the gear 16 rotates, it drives the connecting rod 17 to rotate together, and when the connecting rod 17 rotates, it drives the support seat 1 8 rotates together, and when the support seat 18 rotates, it will also rotate with the robot arm body 19. When the slider 15 moves to the end point, the end of the robot arm body 19 will just be at the top of the working surface. At this time, the robot arm body 19 will clamp the workpiece on the top of the working surface, and then the electric push cylinder 14 will start in the reverse direction to make the slider 15 move to the other end. Similarly, when the slider 15 moves, the angle of the robot arm body 19 will change until the slider 15 reaches the other end. At this time, the workpiece clamped by the robot arm body 19 will be at the bottom of another working surface, and then the robot arm body 19 will send the workpiece to the working surface and perform the next cycle; the electric push cylinder 14 pushes the slider 15 to make the gear 16 and the gear 12 engage, so that the robot arm body 19 rotates with the connecting rod 17, so as to realize the device to change the direction of the robot arm body 19 during transportation, so that the robot arm body 19 can transport workpieces to more spatially arranged working surfaces, expand the range of the workpiece transmission path of the robot arm body 19, and enhance the adaptability of the robot arm body 19 to various complex production environments.

[0027] Reference Figures 2 to 4As shown, a plurality of spring telescopic rods 2 are fixedly connected to the top of the slider 15; an oil storage bag 22 is fixedly connected to the top of the spring telescopic rod 2; a rotating wheel 23 is rotatably connected to the top of the oil storage bag 22; lubricating oil is injected into the oil storage bag 22, and when the slider 15 moves, the spring telescopic rod 2 will be driven to move together, and when the spring telescopic rod 2 moves, it will move together with the oil storage bag 22, and when the oil storage bag 22 moves, it will also drive the rotating wheel 23 to move together, and when the rotating wheel 23 moves, it will contact the surface of the gear teeth 12 and rotate under the action of friction, and when the rotating wheel 23 rotates, it will absorb the lubricating oil inside the oil storage bag 22 and brush the lubricating oil to the surface of the gear teeth 12 when it contacts the gear teeth 12, and when the rotating wheel 23 contacts the gear teeth 12, it will also be squeezed by the gear teeth 12 and transmit the pressure to the oil storage bag 22, and the oil storage bag 22 will The pressure is transmitted to the spring telescopic rod 2 so that the spring telescopic rod 2 is in a compressed state, and then the spring telescopic rod 2 releases elastic potential energy and applies elastic force to the oil storage bag 22 and the rotating wheel 23. The rotating wheel 23 squeezes the surface of the gear tooth 12 under the elastic force of the spring telescopic rod 2, so that the rotating wheel 23 can be close to the surface of the gear tooth 12; the rotating wheel 23 takes the lubricating oil in the oil storage bag 22 to lubricate the gear tooth 12, so that the device can lubricate the gear tooth 12, and ensure that the gear 16 and the gear tooth 12 can mesh smoothly. At the same time, when the rotating wheel 23 and the gear tooth 12 are in contact, the surface of the gear tooth 12 is squeezed under the elastic force of the spring telescopic rod 2, ensuring that the rotating wheel 23 can be close to the surface of the gear tooth 12 when rotating, thereby improving the adaptability of the rotating wheel 23 to the surface of the gear tooth 12 and enhancing the lubricating effect of the rotating wheel 23 on the gear tooth 12.

[0028] Reference Figure 4 As shown, the middle of the oil storage bag 22 is fixedly connected to the first connecting plate 3; the end of the first connecting plate 3 is rotatably connected to the second connecting plate 32 and connected through a torsion spring; the middle of the second connecting plate 32 is rotatably connected to the roller 33; the middle of the roller 33 is fixedly connected to a plurality of bristles 34; when the rotating wheel 23 and the gear teeth 12 come into contact, the roller 33 will also come into contact with the gear teeth 12, the roller 33 will rotate under the action of friction force and make the bristles 34 and the surface of the gear teeth 12 rub, the bristles 34 will brush the lubricating oil on the surface of the gear teeth 12, increase the gear teeth 12 The distribution area of ​​the surface lubricating oil is increased, and the roller 33 is squeezed by the gear teeth 12 and transmits the pressure to the second connecting plate 32. The second connecting plate 32 rotates along the first connecting plate 3 under the pressure and compresses the torsion spring, so that the roller 33 can be in close contact with the surface of the gear teeth 12; through the cooperation of the roller 33 and the bristles 34, the roller 33 and the gear teeth 12 will rotate when in contact and the bristles 34 will apply the lubricating oil on the surface of the gear teeth 12, thereby increasing the uniformity of the distribution of the lubricating oil on the surface of the gear teeth 12 and enhancing the lubricating effect of the device on the gear teeth 12.

[0029] Reference Figure 1 and Figure 5As shown, a second vertical plate 4 is fixedly connected to the bottom of the workbench 1; the second vertical plate 4 and the first vertical plate 13 are correspondingly arranged; a damping spring 42 is fixedly connected to the middle of the second vertical plate 4; a baffle 43 is fixedly connected to the end of the damping spring 42; before the slider 15 slides to the end point, it will contact and squeeze the baffle 43, and the baffle 43 will transfer the pressure to the damping spring 42 after being subjected to pressure. After absorbing the pressure, the damping spring 42 will be in a compressed state and transfer the absorbed pressure to the second vertical plate 4, and then the damping spring 42 will apply elastic force to the baffle 43 so that the baffle 43 squeezes the slider 15, reducing the moving speed of the slider 15; through the cooperation of the damping spring 42 and the baffle 43, when the slider 15 and the baffle 43 come into contact, the damping spring 42 will absorb the kinetic energy of the slider 15, reduce the moving speed of the slider 15, and reduce the possibility of splashing of lubricating oil on the surface of the gear 16.

[0030] Reference Figure 3 and Figure 5 As shown, a plurality of first magnets 5 are fixedly connected to the middle of the baffle 43; a plurality of second magnets 52 are fixedly connected to the middle of the slider 15; the first magnets 5 and the second magnets 52 are correspondingly arranged; when the slider 15 approaches the baffle 43, it will move with the first magnet 5, and the magnetic force between the first magnet 5 and the second magnet 52 will increase, and the second magnet 52 will be repelled by the first magnet 5 and transfer the repulsive force to the slider 15, so that the slider 15 will be subjected to additional resistance during the movement, thereby reducing the moving speed of the slider 15; through the cooperation of the first magnet 5 and the second magnet 52, when the slider 15 approaches the baffle 43, the speed will be reduced under the action of the magnetic force between the first magnet 5 and the second magnet 52, thereby enhancing the deceleration effect of the device on the slider 15.

[0031] As shown in the figure, a rubber pad 6 is fixedly connected to the middle part of the baffle 43; the surface of the rubber pad 6 is an arc-shaped structure; the slider 15 will first come into contact with the rubber pad 6 before coming into contact with the baffle 43, and because the rubber pad 6 is a flexible structure, the rubber pad 6 will absorb the impact force generated when the baffle 43 and the slider 15 come into contact, thereby reducing the impact on the baffle 43; by providing the rubber pad 6, the rubber pad 6 will absorb the impact generated when the baffle 43 and the slider 15 come into contact, thereby reducing the impact on the baffle 43, thereby protecting the baffle 43 and extending the service life of the baffle 43.

[0032] Reference Figure 1As shown, a collecting box 7 is fixedly connected to the middle of the workbench 1; the collecting box 7 is located at the bottom of the gear 16; when the gear 16 and the gear teeth 12 are meshed, the surface of the gear 16 will be stained with lubricating oil, and the lubricating oil will splash when the gear 16 rotates, and the splashed lubricating oil will reach the inside of the collecting box 7; by setting up the collecting box 7, the collecting box 7 will collect the lubricating oil splashed when the gear 16 rotates, thereby reducing the pollution of the lubricating oil to the working environment and improving the utilization rate of the lubricating oil by the device.

[0033] Reference Figure 1 As shown, a sponge 8 is fixed to the bottom of the collecting box 7; the sponge 8 is located at the bottom of the gear 16; when the lubricating oil enters the collecting box 7, it will come into contact with the sponge 8, and the sponge 8 will absorb the lubricating oil, reducing the scope of the lubricating oil splashing; by providing the sponge 8, the sponge 8 will absorb the lubricating oil falling into the collecting box 7, reducing the scope of the lubricating oil splashing, and further reducing the pollution of the lubricating oil to the working environment.

[0034] Working principle: the starting device drives the electric push cylinder 14 to start, and after the electric push cylinder 14 is started, the slider 15 will slide along the workbench 1, and when the slider 15 slides, it will drive the gear 16 to move together and make the gear 16 and the gear teeth 12 mesh, and then the gear 16 will rotate and move with the slider 15, and when the gear 16 rotates, it will drive the connecting rod 17 to rotate together, and when the connecting rod 17 rotates, it will drive the support seat 18 to rotate together, and when the support seat 18 rotates, it will bring the robot arm body 19 to rotate together, and when the slider 15 moves to the end point, the end of the robot arm body 19 will just be at the top of the working surface, and at this time, the robot arm body 19 will clamp the workpiece on the top of the working surface, and then the electric push cylinder 14 will start in the reverse direction to make the slider 15 move to the other end When the slider 15 moves, the angle of the robot arm body 19 will change until the slider 15 reaches another end point. At this time, the workpiece clamped by the robot arm body 19 will be at the bottom of another working surface. Then the robot arm body 19 will send the workpiece to the working surface and perform the next cycle. The oil storage bag 22 is injected with lubricating oil. When the slider 15 moves, it will drive the spring telescopic rod 2 to move together. When the spring telescopic rod 2 moves, it will move together with the oil storage bag 22. When the oil storage bag 22 moves, it will also drive the rotating wheel 23 to move together. When the rotating wheel 23 moves, it will contact the surface of the gear teeth 12 and rotate under the action of friction. When the rotating wheel 23 rotates, it will absorb the lubricating oil inside the oil storage bag 22 and brush the lubricating oil to the gear teeth 12 when it contacts the gear teeth 12. The rotating wheel 23 is pressed against the surface of the gear teeth 12, and when the rotating wheel 23 contacts the gear teeth 12, it will also be squeezed by the gear teeth 12 and transfer the pressure to the oil storage bag 22. The oil storage bag 22 will transfer the pressure to the spring telescopic rod 2 so that the spring telescopic rod 2 is in a compressed state. Then the spring telescopic rod 2 will release the elastic potential energy and apply elastic force to the oil storage bag 22 and the rotating wheel 23. The rotating wheel 23 will squeeze the surface of the gear teeth 12 under the elastic force of the spring telescopic rod 2, so that the rotating wheel 23 can be close to the surface of the gear teeth 12; when the rotating wheel 23 contacts the gear teeth 12, the roller 33 will also contact the gear teeth 12, and the roller 33 will rotate under the action of the friction force and make the bristles 34 rub against the surface of the gear teeth 12, and the bristles 34 will apply the lubricating oil on the surface of the gear teeth 12. The brush increases the distribution area of ​​the lubricating oil on the surface of the gear teeth 12, and the roller 33 will also be squeezed by the gear teeth 12 and transfer the pressure to the second connecting plate 32. The second connecting plate 32 will rotate along the first connecting plate 3 under the pressure and compress the torsion spring, so that the roller 33 can be close to the surface of the gear teeth 12; before the slider 15 slides to the end point, it will contact and squeeze the baffle 43. After the baffle 43 is subjected to pressure, it will transfer the pressure to the damping spring 42. After absorbing the pressure, the damping spring 42 will be in a compressed state and transfer the absorbed pressure to the second vertical plate 4. Then the damping spring 42 will apply elastic force to the baffle 43 so that the baffle 43 squeezes the slider 15, reducing the moving speed of the slider 15;When the slider 15 approaches the baffle 43, it will move with the first magnet 5, and the magnetic force between the first magnet 5 and the second magnet 52 will increase. The second magnet 52 will be repelled by the first magnet 5 and transfer the repulsive force to the slider 15, so that the slider 15 will be subject to additional resistance during movement, reducing the movement speed of the slider 15; before the slider 15 contacts the baffle 43, it will first contact the rubber pad 6. Because the rubber pad 6 is a flexible structure, the rubber pad 6 will absorb the impact force generated when the baffle 43 and the slider 15 contact, reducing the impact on the baffle 43; when the gear 16 and the gear teeth 12 are meshed, the surface of the gear 16 will be stained with lubricating oil, and the gear 16 will splash when the gear 16 rotates. The splashed lubricating oil will reach the inside of the collection box 7; when the lubricating oil enters the inside of the collection box 7, it will contact the sponge 8, and the sponge 8 will absorb the lubricating oil, reducing the range of the splashing of the lubricating oil. ;

[0035] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A transport reversing mechanism for a robot, comprising a workbench (1), characterized in that: The middle of the workbench (1) is fixedly connected to a gear tooth (12); the bottom of the workbench (1) is fixedly connected to a first vertical plate (13); the middle of the first vertical plate (13) is fixedly connected to an electric push cylinder (14); the output end of the electric push cylinder (14) is fixedly connected to a slider (15); the slider (15) and the workbench (1) are slidably connected; the middle of the slider (15) is rotatably connected to a gear (16); the gear (16) and the gear tooth (12) are in meshing relationship; the middle of the gear (16) is fixedly connected to a connecting rod (17); the middle of the connecting rod (17) is fixedly connected to a support seat (18); the top of the support seat (18) is fixedly connected to a robot arm body (19).

2. A transport reversing mechanism for a robot according to claim 1, characterized in that: A second vertical plate (4) is fixedly connected to the bottom of the workbench (1); the second vertical plate (4) and the first vertical plate (13) are arranged correspondingly; a damping spring (42) is fixedly connected to the middle of the second vertical plate (4); and a baffle (43) is fixedly connected to the end of the damping spring (42).

3. A transport reversing mechanism for a robot according to claim 2, characterized in that: A plurality of first magnets (5) are fixedly connected to the middle of the baffle (43); a plurality of second magnets (52) are fixedly connected to the middle of the slider (15); and the first magnets (5) and the second magnets (52) are arranged correspondingly.

4. A transport reversing mechanism for a robot according to claim 3, characterized in that: A rubber pad (6) is fixedly connected to the middle of the baffle (43); the surface of the rubber pad (6) is an arc-shaped structure.

5. A transport reversing mechanism for a robot according to claim 4, characterized in that: A collection box (7) is fixedly connected to the middle of the workbench (1); the collection box (7) is located at the bottom of the gear (16).

6. A transport reversing mechanism for a robot according to claim 5, characterized in that: A sponge (8) is fixedly connected to the bottom of the collection box (7); the sponge (8) is located at the bottom of the gear (16).

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