A coil assembly and a watering truck having the coil assembly

Abstract

This invention discloses a coil assembly and a watering truck having the coil assembly. The coil assembly includes a watering truck coil, a pipe driving device, and a movable pipe pressing device. The coil has a bottom surface for winding the pipe, the pipe driving device has a self-rotating first pressing surface, and the movable pipe pressing device has a second pressing surface. A pipe passage is formed between the first pressing surface and the second pressing surface. When the coil assembly is in a first state, the coil rotates and is in a pipe-releasing state, and the pipe released from the coil moves outward from the pipe passage. Compared with the prior art, the coil assembly of this invention limits the movement of the pipe by the first pressing surface and the second pressing surface when the coil releases the pipe. At the same time, the first pressing surface rotates and applies an outward pulling force to the pipe, so that the pipe between the coil and the pipe passage is in a taut state. This ensures that the pipe between the coil and the pipe passage is taut during the pipe-releasing process, and also ensures that the pipe wound on the coil remains neat and tidy on the coil during the pipe-releasing process.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery sprinkler irrigation equipment technology, specifically to a coil assembly and a watering truck having the coil assembly. Background Technology

[0002] With the acceleration of agricultural modernization in my country, improving land productivity, resource utilization, and labor productivity, as well as reducing production costs, has become crucial for agricultural development. Ensuring sufficient water is key to increasing crop yields. Under natural conditions, insufficient or uneven rainfall often fails to meet the water requirements of crops, necessitating artificial irrigation to supplement natural water shortages. Irrigation trucks are commonly used irrigation tools in modern agriculture. When irrigating crops, fixed water supply points are set up in the fields, supplying water to the irrigation trucks through pipes at these points. Because irrigation trucks move constantly between fields during irrigation, a water hose connects the water supply point to the truck. The truck is equipped with a hose reel for winding the hose. When the truck is near the water supply point, the hose is wound around the reel. As the truck moves from the end near the supply point to the end away, the hose is gradually extended into the field behind the truck. When the truck reverses, the hose is wound back onto the reel. Typically, fields are quite long, with the end near the supply point extending towards... When moving to the other end of the field, a long water pipe is needed to supply water to the irrigation truck. Therefore, the water pipe needs to be wound in multiple layers on the pipe coil, with multiple turns of water pipe in each layer. This allows a smaller pipe coil to be used to wrap the water pipe, which is longer than the field, around the irrigation truck. However, when releasing and retracting the water pipe from the coil, the pipes on the coil and the pipes after leaving the coil are in a loose state. Therefore, after a part of the water pipe on the coil is released, the other layers of water pipe on the coil will start to loosen on the coil, making the water pipes on the coil messy. Summary of the Invention

[0003] The purpose of this invention is to provide a coil assembly and a watering truck having the coil assembly, which solves the above-mentioned technical problems.

[0004] A coil assembly, comprising:

[0005] Tube coil, which has a bottom surface with wound tubes;

[0006] A tube drive device having a self-rotating first pressure tube surface;

[0007] A movable pipe pressing device is movably disposed on the opposite side of the first pipe pressing surface. The movable pipe pressing device forms a second pipe pressing surface, and a pipe passage is formed between the first pipe pressing surface and the second pipe pressing surface.

[0008] The coil assembly has a first state in which the coil rotates and is in the tube-releasing state, and the tube released from the coil moves outward from the tube passage.

[0009] According to one embodiment of the present invention, the tube driving device includes a driver and a rotating shaft. The rotating shaft has a first pressing surface. The driver is used to drive the rotating shaft to rotate when the tube is being released from the tube coil. The rotating shaft is perpendicular to the direction of movement of the tube through the tube channel. The rotational linear velocity of the first pressing surface on the rotating shaft is 1.0-1.3 times the tube release speed of the tube coil.

[0010] According to one embodiment of the present invention, the first pressure surface and / or the second pressure surface is an arc surface adapted to the outer curved surface of the pipe, and the first pressure surface and / or the second pressure surface are provided with a soft medium layer, the surface friction of the soft medium layer is greater than the surface friction of the pressure surface on which it is located; the hardness of the soft medium layer is less than the hardness of the material of the pressure surface on which it is located.

[0011] According to one embodiment of the present invention, the movable tube pressing device includes a roller body with a shaft and grooves provided on the left and right sides of the roller body. A second tube pressing surface is provided on the periphery of the roller body. The shaft extends outside the roller body and is rotatably disposed in the grooves on the left and right sides of the roller body. In a first state, the second tube pressing surface of the movable tube pressing device is driven to a first position by the force of the tube moving outward, and rotates in the first position, and together with the first tube pressing surface of the tube driving device, defines the movement of the tube.

[0012] According to one embodiment of the present invention, the coil assembly further includes a second state in which the coil rotates and is in a retracted state; the second pressing surface of the movable pressing device is driven to a second position by the force of the inward movement of the tube and rotates in the second position, and the tube passage area between the coil and the first pressing surface of the tube driving device increases.

[0013] According to one embodiment of the present invention, the shafts on both sides of the roller body of the movable pressing device can slide from a first position to a second position; can slide from the second position to the first position, and the second position is higher than the first position; and the shafts on both sides of the roller body are defined by inclined grooves; the shafts on both sides of the roller body can rotate in the first position and the second position; the shafts on both sides of the roller body can rotate at any position between the first position and the second position; the movable pressing device can cooperate with the pipe to realize the pipe feeding function in the first state and the pipe receiving function in the second state.

[0014] A watering truck includes the aforementioned coil assembly and a wheel body, the angular velocity of which is proportional to the angular velocity of the coil rotation.

[0015] According to one embodiment of the present invention, in a first state, the tube drive device cooperates with the movable tube pressing device to tighten the tube from the bottom surface of the tube disc to the tube passage, and the formed tube connection line is in a downward tube pulling state; the tube disc includes a rotating shaft, and a tube extension device is provided on the horizontal plane of the shaft, and the tube drive device and the movable tube pressing device are provided on the tube extension device.

[0016] According to one embodiment of the present invention, a positioning device is also included. The positioning device is located on the bottom surface of the tube tray and is fixedly connected to the tube extension device. The positioning device is used to drive the tube extension device to move from the first side of the bottom surface to the second side, and from the second side to the first side.

[0017] According to one embodiment of the present invention, the positioning device includes a rotating shaft and a bushing that surrounds the rotating shaft. A tube extension device is connected to the bushing. An outer slide rail is provided on the outer surface of the rotating shaft. A structure adapted to the outer slide rail is provided inside the bushing. In a first state, the rotating shaft rotates in a first rotation direction adapted to the first state. In a second state, the rotating shaft rotates in a second rotation direction, which is opposite to the first rotation direction. In a unit time, the angle of rotation of the tube disc is proportional to the angle of rotation of the rotating shaft.

[0018] Compared with the prior art, the coil assembly of the present invention, when the coil is being released, the first pressing surface and the second pressing surface cooperate to limit the movement of the tube. At the same time, the first pressing surface rotates autonomously and applies a pulling force to the tube in the same direction as the release, so that the tube between the coil and the tube passage is in a taut state. This ensures that the tube on the coil is in a taut state before entering the tube passage during the release process, and also ensures that the tube that is not released from the coil during the release process remains neatly wound on the coil without loosening. Attached Figure Description

[0019] Figure 1 A schematic diagram showing the connection relationship and structure of the coil assembly with the wheel and drive device during the coiling process;

[0020] Figure 2 for Figure 1 Side view;

[0021] Figure 3 This is a schematic diagram showing the connection relationship and structure of the coil assembly with the wheel and drive unit during coil winding.

[0022] Figure 4 for Figure 3 Side view;

[0023] Figure 5 A schematic diagram of a watering truck with a pipe coil assembly;

[0024] In the diagram: 1. Tube disc, 11. First input sprocket, 12. First output sprocket, 2. Tube drive device, 21. Driver, 22. Rotating shaft, 3. Movable tube pressing device, 4. Wheel body, 5. Tube extension device, 51. Slide groove, 6. Positioning device, 61. Rotating shaft, 62. Bushing, 63. Second input sprocket, 7. Drive device, 71. Drive motor, 72. Output drive shaft, 73. Output sprocket, 74. Transmission gear, 75. Follower gear

[0025] The implementation and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The following drawings disclose several embodiments of the present invention. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details are not intended to limit the invention. That is, in some embodiments of the invention, these practical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0028] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms, and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, such a combination should be considered nonexistent and not within the scope of protection claimed by this invention.

[0029] To further understand the content, features, and effects of this invention, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings:

[0030] The coil assembly in this embodiment is designed and developed to ensure that the flexible hose remaining on the coil remains neatly and taut during the unwinding process. Please refer to [link / reference]. Figures 1 to 4The coil assembly includes a coil 1, a tube drive device 2, and a movable tube pressing device 3. The coil 1 has a bottom surface 11 for winding the tube. The tube drive device 2 forms a first tube pressing surface that rotates autonomously. The movable tube pressing device 3 is movably disposed on the opposite side of the first tube pressing surface and has a second tube pressing surface. A tube passage is formed between the first tube pressing surface and the second tube pressing surface. The coil assembly has a first state in which the coil 1 rotates and is in a tube-releasing state, and the tube released from the coil 1 moves outward from the tube passage. In other words, when the tube is completely wound on the tube coil 1, the tube located in the tube passage is limited by the first pressing surface and the second pressing surface. When the tube is released, the tube coil 1 rotates in the opposite direction to the winding direction of the tube and releases the tube. The first pressing surface of the tube drive device 2 rotates autonomously and causes the tube released from the tube coil 1 to move outward from the tube passage. When the tube released from the tube coil passes through the tube passage, the first pressing surface of the tube drive device 2 rotates and drives the tube to move outward in the direction of tube release. The force of the tube drive device 2 on the tube causes the tube in the tube passage to pull the tube on the tube coil 1 and keep the tube between the tube coil 1 and the tube passage in a taut state. This can keep the tube on the tube coil 1 in a taut state before entering the tube passage during the tube release process. It can also keep the tube that is not released from the tube coil 1 during the tube release process neatly wound on the tube coil 1 without loosening.

[0031] Please see Figure 1 and Figure 3 In this embodiment, the tube driving device 2 includes a driver 21 and a rotating shaft 22. The rotating shaft 22 has the first pressing surface. The driver 21 is used to drive the rotating shaft 22 to rotate when the tube is placed on the tube coil 1. The rotating shaft 22 is perpendicular to the direction of movement of the tube through the tube channel. During pipe placement, the rotation of pipe disc 1 only releases the pipe from pipe disc 1, but does not push the pipe through the pipe passage outward. Therefore, while the pipe is released from pipe disc 1, pipe drive device 2 is needed to pull the pipe through the pipe passage. The force pulling the pipe comes from the friction between the first pressing surface and the pipe when the first pressing surface rotates autonomously. Therefore, in actual use, driver 21 needs to drive shaft 22 to rotate. The surface of shaft 22 is the first pressing surface. When driver 21 drives shaft 22 to rotate, the pipe is limited by the first pressing surface and the second pressing surface. Friction is generated between the pipe and the first pressing surface and the second pressing surface. When the first pressing surface rotates with shaft 22, the friction between the first pressing surface and the pipe causes the first pressing surface to generate an outward pulling force on the pipe. This pulling force pulls the pipe on pipe disc 1 through the pipe passage outward. Furthermore, in order to give the tube driven by the tube drive device 2 the tube released from the tube coil 1 the maximum pulling force when the tube coil 1 is releasing the tube, the rotating shaft 22 needs to be perpendicular to the direction of movement of the tube through the tube channel. In this way, under the drive of the driver 1 with the same power, the pulling force formed by the friction between the first pressing surface and the tube is the maximum.

[0032] In practical use, the linear velocity of the bottom surface of the tube coil 1 must be consistent with the speed of the first pressing surface pulling the tube. That is, the arc length of the bottom surface of the tube coil 1 rotating per unit time must be equal to the arc length of the first pressing surface rotating. This is necessary to maintain the tautness of the tube between the tube coil 1 and the tube passage. However, because multiple layers of tube are wound on the bottom surface of the tube coil 1, after the second layer of tube is wound onto the bottom surface of the tube coil 1, the second layer is essentially wound around a cylinder with a radius equal to the sum of the bottom radius of the tube coil 1 and the diameter of the tube. When the tube is wound to the third layer, the radius of the actual wound cylinder increases by the length of the tube diameter, and so on. Therefore, during the tube release process, if the tube release speed of the tube coil 1 is made equal to the linear velocity of the first pressing surface, the length of the tube released above the first layer on the tube coil 1 per unit time is actually greater than the arc length of the first pressing surface rotating per unit time. Therefore, only when only one layer of tube is wound on the bottom surface of the tube coil 1 can the linear velocity of the first pressing surface on the rotating shaft 22 be equal to the tube release speed of the tube coil 1. Equal; when multiple layers of tube are wound on the bottom surface of the tube coil 1, the rotational linear velocity of the first pressing surface on the rotating shaft 22 needs to be greater than the tube releasing speed of the tube coil 1 in order to keep the tube between the tube coil 1 and the tube passage taut and to tighten the tube on the bottom surface of the tube coil 1. The more layers of tube are wound on the bottom surface of the tube coil 1, the greater the rotational linear velocity of the first pressing surface on the rotating shaft 22 needs to be compared with the tube releasing speed of the tube coil 1. This ensures that the tube between the first pressing surface and the tube coil 1 is kept taut. When the rotating shaft 22... When the rotational linear velocity of the first pressing surface is greater than 1.3 times the tube release speed of the tube coil 1, it indicates that there are too many layers of tubes wound on the bottom surface of the tube coil 1. Usually, for the convenience of use, the number of layers of tubes wound on the bottom surface of the tube coil 1 should be kept at an appropriate level. When the number of layers is too high, the multiple layers of tubes wound on the bottom surface of the tube coil 1 are prone to tilting due to instability of the center of gravity. Therefore, in specific applications, the rotational linear velocity of the first pressing surface on the rotating shaft 22 is 1.0-1.3 times the tube release speed of the tube coil 1.

[0033] In this embodiment, the first pressing surface is an arc surface adapted to the outer curved surface of the tube. That is, the surface of the rotating shaft 22 is provided with an arc-shaped groove, and the surface of the arc-shaped groove is the first pressing surface. The size of the arc-shaped groove on the rotating shaft 22 is adapted to the size of the outer curved surface of the tube. In this way, when the tube enters the tube passage, the outer curved surface of the tube is limited by the first pressing surface and the second pressing surface, and abuts against the first pressing surface and the second pressing surface. This can increase the contact area between the tube and the first pressing surface, thereby increasing the friction between the tube and the first pressing surface when the tube passes through the tube passage. This ensures that when the driver 21 drives the rotating shaft to rotate during the tube release process, the first pressing surface generates a sufficiently large pulling force on the tube.

[0034] In this embodiment, a soft medium layer is provided on the first pressure pipe surface. The surface friction of the soft medium layer is greater than that of the first pressure pipe surface; the hardness of the soft medium layer is less than that of the material of the first pressure pipe surface. The soft medium can increase the friction between the first pressure pipe surface and the pipe. Furthermore, because the hardness of the soft medium on the first pressure pipe surface is less than that of the material of the first pressure pipe surface, it can further increase the friction between the pipe and the first pressure pipe surface. Simultaneously, the soft medium layer also protects the pipe, preventing damage to the outer surface of the pipe caused by friction during long-term use, such as when the first pressure pipe surface rotates, which could lead to leakage and reduce the pipe's service life.

[0035] In this embodiment, the second pressing surface is also an arc surface adapted to the outer curved surface of the tube. That is, the movable pressing device 3 is also provided with an arc-shaped groove. The surface of the arc-shaped groove on the movable pressing device 3 is the second pressing surface. The size of the arc-shaped groove on the movable pressing device 3 is adapted to the size of the outer curved surface of the tube. In this way, when the tube enters the tube passage, the outer curved surface of the tube is limited by the first pressing surface and the second pressing surface, and contacts the first pressing surface and the pressing surface. By increasing the contact area between the tube and the second pressing surface, the friction between the tube and the first pressing surface when the tube passes through the tube passage is increased. During the tube release process, when the driver 21 drives the rotating shaft 22 to rotate, the first pressing surface generates a sufficiently large pulling force on the tube.

[0036] In this embodiment, a soft medium layer is provided on the second pressure pipe surface. The surface friction of the soft medium layer is greater than that of the second pressure pipe surface; the hardness of the soft medium layer is less than the hardness of the material of the second pressure pipe surface. The soft medium can increase the friction between the second pressure pipe surface and the pipe. Furthermore, because the hardness of the soft medium on the second pressure pipe surface is less than the hardness of the material of the second pressure pipe surface, it can increase the friction between the pipe and the second pressure pipe surface, while also protecting the pipe. This prevents friction damage to the outer surface of the pipe caused by friction between the first and second pressure pipe surfaces and the pipe during long-term use, thus avoiding pipe leakage and reducing the pipe's service life.

[0037] Please refer to, 1 and Figure 2In this embodiment, the movable tube pressing device 3 includes a roller body with a shaft and sliding grooves 51 on the left and right sides of the roller body. A second tube pressing surface is provided around the roller body. The shaft extends outside the roller body and is rotatably disposed within the sliding grooves 51 on the left and right sides of the roller body. In the first state, the second tube pressing surface of the movable tube pressing device 3 is driven to a first position by the force of the tube moving outward, and rotates at the first position, thus defining the movement of the tube together with the first tube pressing surface of the tube driving device 2. That is, in the first state, the tube disc 1 is in the tube-releasing state. If the tube disc 1 rotates counterclockwise to release the tube, the driver 21 of the tube driving device 2 will drive the rotating shaft 22 to rotate clockwise and apply a pulling force to the tube to move outward through the tube channel. Therefore, when the rotating shaft 22 rotates and applies a pulling force to the tube to move outward through the tube channel to the first tube pressing surface, the tube moves while simultaneously applying a force along the tube movement direction to the second tube pressing surface. Since the shafts at both ends of the roller body of the movable tube pressing device 3 can slide within the sliding grooves 51... Under the force applied by the tube to the second pressing surface, the shafts at both ends of the roller body move to a position in the direction of tube feeding within the slide groove 51. This position is denoted as the first position. The force applied by the tube to the second pressing surface can only move the shafts at both ends of the roller body to the first position within the slide groove 51. After reaching the first position, the force applied by the tube to the second pressing surface can only cause the shafts at both ends of the roller body to rotate within the slide groove 51. During the rotation, the shafts, together with the first pressing surface, limit the movement of the tube, keeping the tube between the tube disc 1 and the tube passage in a taut state.

[0038] Please see Figure 3 and Figure 4In this embodiment, the coil assembly further includes a second state. In the second state, the coil 1 rotates and is in a retracted state. The second pressing surface of the movable pressing device 3 is driven to a second position by the inward force of the tube and rotates in the second position, increasing the area of ​​the through-channel between it and the first pressing surface of the tube driving device 2. That is, after the tube on the coil 1 is released, the coil assembly still needs a state to retract the tube on the coil 1. This state is the second state of the coil assembly. In the second state, the coil 1 rotates and winds the released tube through the through-channel onto the bottom surface of the coil 1. In the second state, the rotation direction of the coil 1 is opposite to the rotation direction when the coil is releasing the tube in the first state. After all the tube is released, the tube is laid behind the coil assembly. At this time, the force on the tube between the through-channel and the coil 1 includes the weight of the released tube and the friction between the tube and the first and second pressing surfaces. This force causes the coil 1 to be in contact with the through-channel. The tubes between the channels remain taut, ensuring that the released tubes remain neat and tidy after winding onto the tube reel through the tube passage. Furthermore, since the driver 21 of the tube drive device 2 only drives the rotating shaft 22 to rotate during tube release, in the second state, as the tube reel 1 rotates and pulls the released tube through the tube passage towards the bottom surface of the tube reel 1, when the tube reel 1 begins to rotate and pull the tube through the tube passage towards the bottom surface of the tube reel 1, the rotating shaft 22 can only rotate on the tube extension device, while the shafts at both ends of the rollers of the movable tube pressing device 3 can slide within the groove 51. Therefore, the friction between the tube and the first pressing surface is minimized. The force causes the tube to drive the rotating shaft 22 to rotate. The friction between the tube and the second pressing surface causes the tube to exert a force on the second pressing surface in the same direction as the tube's movement during winding. This force causes the tube to move the shafts at both ends of the roller body along the slide groove 51 to the second position of the slide groove 51. After the shafts at both ends of the roller body are moved to the second position, the friction between the tube and the second pressing surface causes the tube to only drive the roller body to rotate when winding towards the bottom surface of the tube disc 1. This, in turn, causes the shafts at both ends of the roller body to rotate within the second position of the slide groove 51. Since the tube moves from the outside to the inside in the tube passage direction when the tube disc 1 winds the tube, the tube overcomes the first pressing surface during winding. The extra force from the friction between the first and second pressing tube surfaces will cause the second pressing tube surface to move, which means that the shafts at both ends of the roller body will move to the second position of the slide groove 51. This second position is the position to reduce the friction between the tube and the first and second pressing tube surfaces. Therefore, when the shafts at both ends of the roller body move to the second position of the slide groove 51, the distance between the first and second pressing tube surfaces increases, that is, the tube passage area increases. Thus, when the tube is wound, after the shafts at both ends of the roller body of the movable pressing tube device 3 are brought to the second position of the slide groove 51, the tube disc 1 only needs to overcome a small frictional force to wind the tube onto the bottom surface of the tube disc 1.

[0039] In this embodiment, the shafts on both sides of the roller of the movable pressing device 3 can slide from the first position to the second position; can slide from the second position to the first position, and the second position is higher than the first position; and the shafts on both sides of the roller are defined by inclined grooves 51; the shafts on both sides of the roller can rotate between the first position and the second position; the shafts on both sides of the roller can rotate at any position between the first position and the second position; the movable pressing device 3 can cooperate with the pipe to realize the pipe release function in the first state and the pipe retraction function in the second state.

[0040] In other words, during pipe winding, increasing the friction between the pipe and the first and second pressing surfaces, especially the friction between the pipe and the first pressing surface, increases the pulling force of the pipe drive device 2 on the pipe. Therefore, at this time, it is necessary to reduce the area of ​​the pipe passage so that the pipe is pressed tightly by the first and second pressing surfaces. During pipe winding, the power for winding comes from the rotation of the pipe disc 1. The pipe disc 1 needs to overcome the weight of the pipe and the friction between the first and second pressing surfaces when winding the pipe. At this time, reducing the friction between the pipe and the first and second pressing surfaces can increase the winding power. That is to say, during pipe unwinding, the distance between the first and second pressing surfaces needs to be reduced, i.e., the area of ​​the pipe passage needs to be reduced. The area of ​​the channel needs to be reduced. During pipe winding, the distance between the first and second pressing surfaces needs to be increased, meaning the area of ​​the pipe passage needs to be increased. If the chute 51 is horizontally set, the distance between the pipe drive device 2 and the movable pressing device 3 will be minimized only when they are directly opposite each other. At this time, the contact area between the first and second pressing surfaces and the pipe is also maximized. When the pipe is unwinding, the pipe drives the movable pressing device 3 to move within the chute, which only increases the distance between the first and second pressing surfaces and reduces the contact area between the pipe and the first and second pressing surfaces, thus reducing the friction between the pipe and the first and second pressing surfaces. Therefore, in this embodiment, the chute 51 is set at an angle in the coil assembly. Furthermore, the height of the end closer to the tube coil 1 is higher than the height of the end farther from the tube coil 1. Thus, when releasing the tube, as the tube drives the movable tube pressing device 3 to move along the slide groove 51 towards the end farther from the tube coil 1, the shafts at both ends of the roller body move downwards along the slide groove 51. When retracting the tube, as the tube drives the movable tube pressing device 3 to move along the slide groove 51 towards the end closer to the tube coil 1, the shafts at both ends of the roller body move upwards along the slide groove 51. The position of the shafts at both ends of the roller body during releasing the tube is the first position, and the position during retracting the tube is the second position. Thus, the second position is higher than the first position. If all the tube wound on the bottom surface of the tube coil 1 is released, the position of the shafts at both ends of the roller body within the slide groove 51... When the tube is completely wound around the bottom surface of the tube reel 1, the position of the shafts at both ends of the roller body in the groove 51 is marked as the first position. The first position is the lowest point of the groove 51, and the second position is the highest point of the groove 51. When the tube is released to different lengths, the position of the shafts at both ends of the roller body in the groove 51 is different. When the length of the released tube is recovered to different lengths, the position of the shafts at both ends of the roller body in the groove 51 will also change. Therefore, the shafts on both sides of the roller body can rotate at any position between the first position and the second position, as long as the movable tube pressing device 3 can cooperate with the tube to realize the tube release function in the first state and the tube recovery function in the second state.

[0041] Please see Figure 5This invention also relates to a watering truck, which includes the aforementioned coil assembly and wheels 4. The wheels 4 are used to move the watering truck within the field during irrigation operations, moving it from the end closest to the water supply point to the end furthest from the water supply point, and then returning to the end closest to the water supply point after moving to the end furthest from the water supply point. When the watering truck moves from the end closest to the water supply point to the end furthest from the water supply point, the coil assembly is in a first state, and the coil 1 is in a pipe-releasing state. If the coil 1 rotates too quickly during pipe release, the length of pipe released by the coil 1 per unit time will be greater than the distance the wheel 4 drives the watering truck to travel. This will cause a large amount of pipe to accumulate on the field behind the watering truck, wasting pipe and causing the pipe to not be straightened. Twisted sections of the pipe will affect water flow and the water output of the watering truck. If the coil 1 rotates too slowly, the length of pipe released by the coil 1 per unit time will be less than the distance the wheel 4 drives the watering truck to travel. The pipe will be pulled along as the water truck moves away from the water supply point. Therefore, the speed at which the pipe coil 1 releases the pipe must match the speed at which the water truck moves away from the water supply point. When the water truck moves from the end away from the water supply point to the end closer to the water supply point, the coil assembly is in the second state, and the pipe coil 1 is in the pipe-retracting state. If the rotation speed of the pipe coil 1 is too fast when retracting the pipe, the length of the pipe wrapped around the bottom surface of the pipe coil 1 per unit time will be greater than the distance the water truck moves with the wheel 4, and the pipe will be pulled along, thus detaching the pipe from the water supply point. If the rotation speed of the pipe coil 1 is too slow when retracting the pipe, the length of the pipe wrapped around the bottom surface of the pipe coil 1 per unit time will be less than the distance the water truck moves with the wheel 4, and the pipe will be piled up in front of the water truck's direction of movement and crushed by the water truck's wheel 4, affecting the stability of the water truck's movement, the water output when the water truck sprays water, and also affecting the service life of the pipe. Therefore, the speed at which the pipe coil 1 retracts the pipe must match the speed at which the water truck moves towards the end closer to the water supply point. Since the moving speed of the water truck is determined by the rotational angular velocity of the wheel 4, and the speed of the pipe feeding and retracting of the pipe disc 1 is determined by the rotational angular velocity of the pipe disc 1, the rotational angular velocity of the wheel 4 is proportional to the rotational angular velocity of the pipe disc 1.

[0042] In this embodiment, in the first state, the pipe driving device 2 cooperates with the movable pipe pressing device 3 to tighten the pipe from the bottom surface of the pipe coil 1 to the pipe passage, forming a pipe connection line in a downward-pulling state. That is, when the irrigation truck moves from the end closer to the water supply point to the end farther away from the water supply point, the coil assembly is in the first state, and the pipe coil 1 begins to release the pipe. When the pipe coil 1 releases the pipe, the pipe moves outward through the pipe passage and is laid on the field behind the direction of movement of the irrigation truck. Due to the gravity of the released pipe, the pipe that has been released and laid on the bottom surface through the pipe passage exerts a downward pulling force on the pipe between the pipe coil 1 and the pipe passage, making the pipe from the bottom surface of the pipe coil 1 to the pipe passage taut, and the taut pipe connection line is in a downward-pulling state.

[0043] In this embodiment, the tube disc includes a rotating shaft, and a tube extension device 5 is arranged on the horizontal plane of the shaft. The tube drive device 2 and the movable tube pressing device 3 are arranged on the tube extension device 5. In specific applications, both the tube drive device 2 and the movable tube pressing device 3 are arranged on the tube extension device 5. The tube extension device 5 is located opposite the bottom surface of the tube disc 1. The rotating shaft 22 of the tube drive device 2 passes through the tube extension device 5 and is rotatably connected to the tube extension device 5. The portion of the rotating shaft 22 located inside the tube extension device 5 is provided with an arc-shaped groove and forms a first tube pressing surface. The two sides of the tube extension device 5 are provided with sliding grooves 51. The roller of the movable tube pressing device 3 is placed inside the tube extension device 5, and the shafts at both ends of the roller are slidably connected to the sliding grooves 51 on both sides of the tube extension device 5.

[0044] Please see Figure 5In this embodiment, the irrigation truck also includes a positioning device 6. The positioning device 6 is located on the bottom surface of the pipe coil 1 and is fixedly connected to the pipe extension device 5. The positioning device 6 is used to drive the pipe extension device 5 from the first side to the second side of the bottom surface of the pipe coil 1, and from the second side to the first side. When the coil assembly is applied to the irrigation truck, because the field is relatively long, the coil assembly on the irrigation truck needs to wind a pipe of sufficient length to follow the irrigation truck and supply water to the irrigation truck. However, the number of turns of the pipe wound on the bottom surface of the pipe coil 1 cannot be too high. If it is too high, the pipe wound on the bottom surface of the pipe coil 1 is prone to tilting due to instability of the center of gravity. Therefore, when the coil assembly is applied to the irrigation truck, the width of the bottom surface of the pipe coil 1 is at least greater than the length of two pipe diameters. During the process of winding the pipe on the bottom surface of the pipe coil 1, the positioning device 6 drives the pipe extension device 5 to move back and forth from the first side to the second side of the bottom surface of the pipe coil 1. During the movement of the pipe extension device 5, the pipe extension device 5 guides the pipe through the pipe... The tube of the channel is wound starting from the first edge of the first layer on the bottom surface of the tube reel 1. After one turn, a second turn is wound immediately adjacent to the first turn, until the first layer of tube is wound to the second edge of the bottom surface of the tube reel 1. Then, the tube begins to be wound to the second layer from the second edge, guided by the tube extension device 5, starting to wind from the second edge to the first edge of the bottom surface of the tube reel 1. After one turn of the second layer, a second turn is wound immediately adjacent to the first turn, until the second layer of tube is wound to the second edge of the bottom surface of the tube reel 1. Then, the tube begins to be wound to the third layer, guided by the tube extension device 5, starting to wind from the second edge to the first edge of the bottom surface of the tube reel 1. This process is repeated until the entire tube is wound to the bottom surface of the tube reel 1. During the process of winding the tube to the bottom surface of the tube reel 1, the positioning device 6 moves the tube extension device 5 from the first edge to the second edge of the bottom surface of the tube reel 1, and then from the second edge to the first edge. The tube extension device 5 guides the tube to be wound sequentially in each layer, ensuring that the tube is neatly wound layer by layer on the bottom surface of the tube reel 1.

[0045] In actual use, the pipe wound on the pipe coil passes through the pipe channel and connects to the water supply point. When the irrigation truck is near the water supply point, the pipe is wound on the pipe coil 1. When the irrigation truck moves from the water supply point to the point away from the water supply point, the pipe coil 1 will rotate with the movement of the irrigation truck. During the rotation of the pipe coil 1, the pipe wound on the bottom surface of the pipe coil 1 will be released from the pipe coil 1 and laid on the field behind the irrigation truck. When the irrigation truck moves to the end of the field, that is, the end of the irrigation truck away from the water supply point, the irrigation truck will start to return from the end away from the water supply point to the end near the water supply point. When the irrigation truck returns from the end away from the water supply point to the end near the water supply point, the pipe coil 1 will rotate with the movement of the irrigation truck, and the rotation direction of the pipe coil 1 is opposite to the rotation direction when the irrigation truck moves away from the fixed water supply point, and the pipe laid on the field will be rewound onto the bottom surface of the pipe coil 1. In other words, in the first state, the irrigation truck moves from the end closest to the fixed water supply point to the end furthest from the fixed water supply point. At this time, the pipe coil 1 is in the pipe-laying state, and the pipe wound on the bottom surface of the pipe coil 1 moves outward through the pipe passage and is laid on the field behind the irrigation truck. At this time, the rotation direction of the pipe coil 1 is the pipe-laying direction, and the movement direction of the irrigation truck is the forward direction. In the second state, the irrigation truck moves from the end furthest from the water supply point to the end closest to the water supply point, and the pipe coil 1 is in the pipe-retracting state. The pipe moves from the outside to the inside through the pipe passage and is wound on the pipe coil. The rotation direction of the pipe coil is the pipe-retracting direction, and the movement direction of the irrigation truck is the backward direction. Furthermore, when the tube is being placed and retracted from the tube reel 1, the tube passes through the tube channel. Therefore, when the tube is coiled around the bottom surface of the tube reel 1 or extended around the bottom surface of the tube reel 1, the positioning device 6 and the tube extension device 5 need to move just enough to cover the width of the tube coiled around one end or extended around the bottom surface of the tube reel 1. The speed at which the tube is placed or retracted from the tube reel 1 is determined by the rotation speed of the tube reel 1, while the moving speed of the tube extension device 5 is determined by the moving speed of the positioning device 6. Therefore, in the first and second states, the rotation angle of the tube reel 1 is proportional to the moving speed of the positioning device 6.

[0046] Please see Figure 1 and Figure 3 In this embodiment, the positioning device 6 includes a rotating shaft 61 and a bushing 62 that surrounds the rotating shaft 61. The bushing 62 is connected to the tube extension device 5. An outer slide rail is provided on the outer surface of the rotating shaft 61, and a structure adapted to the outer slide rail is provided inside the bushing 62. In a first state, the rotating shaft 61 rotates in a first rotation direction adapted to the first state. In a second state, the rotating shaft 61 rotates in a second rotation direction, which is opposite to the first rotation direction. In a unit time, the angle of rotation of the tube disc 1 is proportional to the angle of rotation of the rotating shaft 61.

[0047] In other words, if the rotating shaft 61 rotates clockwise during tube feeding, the first layer of tube is wound clockwise on the bottom surface of the tube reel 1, starting from the first edge and moving towards the second edge. The second layer is wound clockwise, starting from the second edge and moving towards the first edge. The third layer is wound clockwise, starting from the first edge and moving towards the second edge, and so on. During tube feeding, the rotating shaft 61 rotates counter-clockwise. If the last... If the number of tube layers is even, then when releasing the tubes, the last layer is released from the bottom edge of tube reel 1, one circle at a time, from the first edge to the second edge. The second-to-last layer is released from the bottom edge of tube reel 1, one circle at a time, and so on. In general, when retracting the tubes, for tubes with an even number of layers, the winding direction is clockwise, starting from the second edge of the bottom edge of tube reel 1 and winding towards the first edge. For tubes with an odd number of layers, the winding direction is also clockwise, starting from the first edge of the bottom edge of tube reel 1 and winding towards the first edge. The second winding sequence is as follows: When releasing the tubes, for tubes with an even number of layers, the tubes are released one turn at a time from the first side to the second side of the bottom surface of the tube disc 1; for tubes with an odd number of layers, the tubes are released one turn at a time from the second side to the first side of the bottom surface of the tube disc 1. However, in the first state, the rotating shaft 61 always rotates in the first direction of rotation, and in the second state, the rotating shaft 61 always rotates in the second direction of rotation. In both the first and second states, when the positioning device 6 moves back and forth between the first and second sides of the tube disc 1, it relies on the cooperation between the outer slide rail on the outer surface of the rotating shaft 61 and the structure inside the bushing 62 that is adapted to the outer slide rail. This structure causes the bushing 62 to move on the outer slide rail. When the bushing 62 moves to one end of the outer slide rail, the sliding direction of the bushing 62 on the outer slide rail changes. When it slides to the other end, the sliding direction of the bushing 62 on the outer slide rail changes again. By changing the sliding direction of the bushing 62 at both ends of the outer slide rail, the moving direction of the positioning device 6 driving the tube extension device 5 is changed. Meanwhile, since the speed at which the tube is released or retrieved from the tube coil 1 is determined by the rotation speed of the tube coil 1, and the moving speed of the tube extension device 5 is determined by the moving speed of the positioning device 6, and the conveying speed of the positioning device 6 is determined by the rotation speed of the rotating shaft 51, the angle of rotation of the tube coil 1 per unit time is proportional to the angle of rotation of the rotating shaft 61. This ensures that when the tube is wound around the bottom surface of the tube coil 1 or released around the bottom surface of the tube coil 1, the rotating shaft 61 drives the tube extension device 5 through the bushing 62 to move just enough to cover the width of the tube being wound around one end or released around the bottom surface of the tube coil 1.

[0048] In this embodiment, the outer surface of the rotating shaft 61 is provided with a working area of ​​an outer slide rail, the working area being adapted to the length of the bottom surface of the tube disk 1; the working area includes a first end and a second end, the first end and the second end being respectively disposed corresponding to the first side and the second side of the bottom surface of the tube disk 1; so that when the bushing 62 is located at the first end, the tube can be placed or retracted at the first side; when the bushing 62 is located at the second end, the tube can be placed or retracted at the second side; in the first state, the rotating shaft 61 rotates in a first rotation direction, and when the bushing 62 moves to the second end, it is located at the end point of the working area, the bushing 62 cooperates with the outer slide rail, so that the bushing 62 moves from the second end to the first... In the first state, the rotating shaft 61 rotates in a first direction, and when the bushing 62 moves to the first end, it is located at the end of the working area. The bushing 62 cooperates with the outer slide rail, causing the bushing 62 to move from the first end to the second end. In the second state, the rotating shaft 61 rotates in a second rotation direction, and when the bushing 62 moves to the second end, it is located at the end of the working area. The bushing 62 cooperates with the outer slide rail, causing the bushing 62 to move from the second end to the first end. In the second state, the rotating shaft 61 rotates in a second direction, and when the bushing 62 moves to the first end, it is located at the end of the working area. The bushing 62 cooperates with the outer slide rail, causing the bushing 62 to move from the first end to the second end.

[0049] Because when winding the tube from the first edge to the second edge of the bottom surface of the tube coil 1, a new layer needs to be started when the tube is wound around the coil. Then, it needs to be wound from the second edge to the first edge, and so on. Similarly, when releasing the tube, after it is released from the first edge to the second edge of the bottom surface of the tube coil 1, a new layer needs to be started and released from the second edge to the first edge, and so on. During pipe placement or retraction, the rotating shaft 61 drives the pipe extension device 5 to reciprocate in the direction of pipe placement or retraction via the bushing 62. Therefore, when the pipe is placed or retracted to the first side of the bottom surface of the pipe disc 1, the bushing 62 on the outer slide rail of the rotating shaft 61 must also be moved to the end corresponding to the first side. When the pipe is placed or retracted to the second side of the bottom surface of the pipe disc 1, the bushing 62 on the outer slide rail of the rotating shaft 61 must also be moved to the end corresponding to the second side. The end of the outer slide rail corresponding to the first side is called the first end, and the end corresponding to the second side is called the second end. The corresponding end is called the second end. The area between the first end and the second end is the working area of ​​the outer slide rail. The length of this working area is adapted to the length of the bottom surface of the tube coil 1. Thus, when the tube coil 1 is retracted or extended to the first side of the bottom surface of the tube coil 1, the bushing 62 just drives the tube extension device 5 to slide on the outer slide rail of the rotating shaft 61 to the first end. The first end is the end point of the working area of ​​the outer slide rail. At this time, the structure inside the bushing 62 that is adapted to the outer slide rail causes the movement direction of the bushing 62 on the outer slide rail to change. The bushing 62 starts from the outer slide rail. As the first end of the working area moves to the second end, the tube also begins to be retracted or extended from the first side of the bottom surface of the tube disc 1 to the second side. When the bushing 62 moves to the second end of the working area of ​​the outer slide rail, the tube also wraps around or extends to the second side of the bottom surface of the tube disc 1. The second end is also the end point of the working area of ​​the outer slide rail. At this time, the structure inside the bushing 62 that is adapted to the outer slide rail causes the bushing 62 to change its direction of movement on the outer slide rail again. The bushing 62 then begins to drive the tube extension device 5 to move from the second end to the first end of the working area of ​​the outer slide rail, and so on. Since the rotating shaft 61 always rotates in the first direction in the first state and in the second direction in the second state, the positioning device 6 relies on the cooperation between the outer slide rail on the outer surface of the rotating shaft 61 and the structure inside the bushing 62 that is adapted to the outer slide rail when it moves back and forth between the first and second sides of the tube disc 1 in the first and second states. This structure causes the bushing 62 to change its sliding direction on the outer slide rail when it slides to one end of the outer slide rail, and to change its sliding direction again when it slides to the other end. The changing of the sliding direction of the bushing 62 at both ends of the outer slide rail changes the moving direction of the positioning device 6 driving the tube extension device 5.

[0050] When the watering truck starts working, the movement of the watering truck driven by the wheels must be synchronized with the placement or retraction of the pipe on the pipe tray 1 and maintain a suitable speed. Furthermore, when the pipe tray 1 is placing or retracting the pipe, the movement of the pipe extension device 5 driven by the positioning device 6 must be synchronized with the placement of the pipe on the pipe tray 1 and maintain a suitable speed. If any of the wheels 4, pipe tray 1, or positioning device 6 moves prematurely or lags behind, it will affect the coordination between the pipe and the watering truck. Inappropriate speeds will also result in improper coordination between the pipe and the watering truck. Therefore, in this embodiment, the rotating shaft 61, the wheels 4, and the pipe tray 1 are all driven by the same drive device 7, and their rotation angles are proportional. The rotation directions of the wheels 4 and the pipe tray 1 are opposite. Please refer to [link / reference]. Figure 1 and Figure 3 In specific applications, the drive device 7 includes a drive motor 71, an output drive shaft 72, an output sprocket 73, a transmission gear 74, and a follower gear 75. The output end of the drive motor 71 is connected to the output sprocket 73 and the transmission gear 74. The follower gear 75 is mounted on the output drive shaft 72 and meshes with the transmission gear 74. Two of the wheel bodies 4 are connected to the two ends of the output drive shaft 72. The tube disc 1 is provided with a central shaft, on which a first input sprocket 11 and a first output sprocket 12 are mounted. A second input sprocket 63 is mounted on the rotating shaft 61. Sprocket 11 is connected to output sprocket 73 via chain drive, and first output sprocket 12 is connected to second input sprocket 63 via chain drive. When drive motor 71 starts, output sprocket 73 and transmission gear 74 connected to the drive end of drive motor 71 rotate. Transmission gear 74 drives follower gear 75 to rotate, and follower gear 75 drives output drive shaft 72 to rotate. The wheel bodies 4 located at both ends of output drive shaft 72 rotate, causing the watering truck to move away from the water supply point. Output sprocket 73 drives first input sprocket 11 to rotate via chain drive, thereby... The pipe disc 1 is rotated and pipe feeding begins. The first output sprocket 12 rotates with the central axis of the pipe disc 1, and drives the second input sprocket 63 to rotate via a chain. The second input sprocket 63 drives the rotating shaft 61 to rotate, and the positioning device 6 begins to drive the pipe extension device 5 to reciprocate between the first and second sides of the bottom surface of the pipe disc 1. When the water truck moves to the end away from the water supply point, the drive motor 71 rotates in the opposite direction. The output sprocket 73 and the transmission gear 74 connected to the drive end of the drive motor 71 rotate in the opposite direction, and the transmission gear 74 drives the follower gear 75 to rotate. The follower gear 75 drives the output drive shaft 72 to rotate. The wheels 4 located at both ends of the output drive shaft 72 rotate, causing the water truck to move closer to the water supply point. The output sprocket 73 drives the first input sprocket 11 to rotate via a chain, thereby causing the pipe disc 1 to rotate and begin to retract the pipe. The first output sprocket 12 rotates with the central axis of the pipe disc 1 and drives the second input sprocket 63 to rotate via a chain. The second input sprocket 63 drives the rotating shaft 61 to rotate, and the positioning device 6 begins to drive the pipe extension device 5 to reciprocate between the first and second sides of the bottom surface of the pipe disc 1.

[0051] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A coil assembly, characterized by, The application relates to a coil pipe assembly, which comprises: a pipe coil, which has a bottom surface for winding pipes; a pipe driving device, which is formed with a first pipe pressing surface for self-rotation; a movable pipe pressing device, which is movably arranged on the opposite side of the first pipe pressing surface, and is formed with a second pipe pressing surface, and a pipe passing channel is formed between the first pipe pressing surface and the second pipe pressing surface; the coil pipe assembly has a first state, in which the pipe coil rotates and is in a pipe releasing state, and the pipes released from the pipe coil move outward from the pipe passing channel; the pipe driving device comprises a driver and a rotating shaft, the rotating shaft is formed with the first pipe pressing surface, the driver is used for driving the rotating shaft to rotate when the pipe coil releases the pipes, and the rotating shaft is perpendicular to the moving direction of the pipes through the pipe passing channel; the rotating linear speed of the first pipe pressing surface on the rotating shaft is 1.0-1.3 times the pipe releasing speed of the pipe coil; the movable pipe pressing device comprises a roller body with a shaft and a sliding groove arranged on the left and right sides of the roller body, the periphery of the roller body is provided with the second pipe pressing surface, the shaft extends outside the roller body and is rotatably arranged in the sliding groove on the left and right sides of the roller body; in the first state, the second pipe pressing surface of the movable pipe pressing device is driven to the first position by the force of the outward movement of the pipes, rotates in the first position, and cooperates with the first pipe pressing surface of the pipe driving device to limit the movement of the pipes; the coil pipe assembly further comprises a second state, in which the pipe coil rotates and is in a pipe collecting state; the second pipe pressing surface of the movable pipe pressing device is driven to the second position by the force of the inward movement of the pipes, rotates in the second position, and the pipe passing channel area between the first pipe pressing surface of the pipe driving device is increased.

2. The coil assembly of claim 1, wherein, the first pipe pressing surface and / or the second pipe pressing surface are arc surfaces matched with the outer curved surface of the pipes, the first pipe pressing surface and / or the second pipe pressing surface are provided with a soft medium layer, the surface friction of the soft medium layer is greater than that of the pipe pressing surface, and the hardness of the soft medium layer is less than that of the material of the pipe pressing surface.

3. The coil assembly of claim 1, wherein, the shafts on the left and right sides of the roller body of the movable pipe pressing device can slide from the first position to the second position, can slide from the second position to the first position, and the second position is higher than the first position; the sliding grooves limiting the shafts on the left and right sides of the roller body are obliquely arranged; the shafts on the left and right sides of the roller body can rotate in the first position and the second position, can rotate in any position between the first position and the second position, and the movable pipe pressing device can cooperate with the pipes to realize the pipe releasing function in the first state and the pipe collecting function in the second state.

4. A watering cart comprising the coil assembly of any one of claims 1-3, wherein, a wheel body is further included, and the rotating angular velocity of the wheel body is proportional to the angular velocity of the rotation of the pipe coil.

5. The watering cart of claim 4, wherein, in the first state, the pipe driving device cooperates with the movable pipe pressing device, so that the pipes between the bottom surface of the pipe coil and the pipe passing channel are taut, and the formed pipe connecting line is in a downward pulling pipe state; the pipe coil comprises a rotating shaft, and a pipe extending device is arranged on the horizontal plane of the shaft, and the pipe driving device and the movable pipe pressing device are arranged on the pipe extending device.

6. The watering cart of claim 5, wherein, The positioning device is located on the bottom surface of the pipe disc and is fixedly connected with the pipe extending device, and is used to drive the pipe extending device to move from a first edge to a second edge of the bottom surface and move from the second edge to the first edge.

7. The watering cart of claim 6, wherein, The positioning device comprises a rotating shaft and a shaft sleeve wrapping the rotating shaft, the pipe extending device is connected to the shaft sleeve, the outer surface of the rotating shaft is provided with an outer sliding rail, and the shaft sleeve is provided with a structure matched with the outer sliding rail, in a first state, the rotating shaft rotates in a first rotating direction matched with the first state, in a second state, the rotating shaft rotates in a second rotating direction opposite to the first rotating direction, and the angle of rotation of the pipe disc in a unit time is proportional to the angle of rotation of the rotating shaft.

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