Coil pipe assembly and watering vehicle with coil pipe assembly

Abstract

The coil pipe assembly comprises a watering vehicle pipe disc, a pipe driving device and a movable pipe pressing device, the pipe disc is provided with a bottom face used for winding a pipe, the pipe driving device forms a first pipe pressing face capable of automatically rotating, the movable pipe pressing device forms a second pipe pressing face, and the first pipe pressing face is provided with a first pipe pressing face and a second pipe pressing face. A pipe passing channel is formed between the first pipe pressing surface and the second pipe pressing surface; when the coil pipe assembly is in the first state, the pipe disc rotates and is in a pipe placing state, and a pipe released from the pipe disc moves outwards from the pipe passing channel; compared with the prior art, the pipe coiling assembly has the advantages that when the pipe coil releases the pipe, the first pipe pressing surface and the second pipe pressing surface limit the movement of the pipe, and meanwhile, the first pipe pressing surface rotates and applies outward pulling force to the pipe, so that the pipe between the pipe coil and the pipe passing channel is in a tightened state; the pipe between the pipe disc and the pipe channel in the pipe placing process can be in a tightened state, and the pipe wound on the pipe disc in the pipe placing process can still be neat and not messy on the pipe disc.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery sprinkler irrigation equipment, and in particular to a coil assembly and a watering vehicle having the coil assembly. Background Art

[0002] With the acceleration of my country's agricultural modernization process, improving land output, resource utilization, labor productivity and reducing production costs have become the key to agricultural development. Ensuring sufficient water is the key to increasing crop yields. Under natural conditions, the water demand of crops cannot be met due to insufficient or uneven precipitation. Therefore, artificial irrigation must be carried out to supplement the lack of natural water. Watering trucks are commonly used irrigation tools in agricultural production. When watering crops, fixed water supply points are set between fields, and water is supplied to watering trucks through fixed water supply point pipes. Since the watering truck is constantly moving between fields during the watering and irrigation process, a water pipe for watering is connected between the water supply point and the watering truck. The watering truck is provided with a pipe tray for winding the water pipe. When the watering truck is located at one end of the field close to the water supply point, the water pipe is wound around the pipe tray of the watering truck. When the watering truck moves from the end close to the water supply point to the end far from the water supply point, the water pipe on the pipe tray is gradually laid out to the field behind the watering truck; when the watering truck moves backward, the water pipe will be wound around the pipe tray again. Usually, the length of the field is relatively long, and some fields have water supply points at one end. When moving to the other end of the field, a very long water pipe is needed to supply water to the watering truck, so the water pipe needs to be wound on the pipe reel in multiple layers and each layer needs to be wrapped with multiple turns of water pipe. In this way, a smaller pipe reel can be used to wrap all the water pipes that are longer than the length of the field around the watering truck. However, when the water pipes on the pipe reel are released and collected, the pipes on the pipe reel and the pipes after leaving the pipe reel are in a loose state. Therefore, after a part of the water pipes on the pipe reel is released, the water pipes in other layers on the pipe reel will begin to loosen on the pipe reel, making the water pipes on the pipe reel messy. Summary of the invention

[0003] The object of the present invention is to provide a coil assembly and a watering truck having the coil assembly, which are used to solve the above-mentioned technical problems.

[0004] A coil assembly, comprising:

[0005] a tube coil having a bottom surface on which the tube is wound;

[0006] A tube driving device formed with a first tube pressing surface that rotates autonomously;

[0007] A movable pipe pressing device is movably arranged on the opposite side of the first pipe pressing surface, the movable pipe pressing device is formed with 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 tube coil rotates and is in a tube releasing state, and the tube released from the tube coil moves outward from the tube passage.

[0009] According to one embodiment of the present invention, the pipe driving device includes a driver and a rotating shaft, the rotating shaft is formed with a first pipe pressing surface, the driver is used to drive the rotating shaft to rotate when the pipe is released from the pipe coil, and the rotating shaft is perpendicular to the moving direction of the pipe through the pipe passage; the rotational linear speed of the first pipe pressing surface on the rotating shaft is 1.0-1.3 times the pipe release speed of the pipe coil.

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

[0011] According to one embodiment of the present invention, the movable tube pressing device includes a roller body with an axis and slide grooves arranged on the left and right sides of the roller body, a second tube pressing surface is arranged on the periphery of the roller body, the axis extends outside the roller body and is rotatably arranged in the slide grooves 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 is driven to the first position by the force of the tube moving outward, and rotates at the first position, and together with the first tube pressing surface of the tube driving device, limits the movement of the tube.

[0012] According to one embodiment of the present invention, the coil assembly also includes a second state. In the second state, the tube coil rotates and is in a tube retracting state; the second tube pressing surface of the movable tube pressing device is driven to the second position by the force of the tube moving inward, and rotates at the second position, and the tube passage area between the first tube pressing surface of the tube driving device is increased.

[0013] According to one embodiment of the present invention, the axes on both sides of the roller body of the movable pipe 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 axes on both sides of the roller body are limited by inclined sliding grooves; the axes on both sides of the roller body can rotate between the first position and the second position; the axes on both sides of the roller body can rotate at any position between the first position and the second position; the movable pipe pressing device can cooperate with the pipe to correspondingly realize the pipe releasing function in the first state and the pipe collecting function in the second state.

[0014] A watering truck comprises the above-mentioned coil assembly and a wheel body, wherein the rotation angular velocity of the wheel body is proportional to the rotation angular velocity of the pipe coil.

[0015] According to one embodiment of the present invention, in the first state, the pipe driving device cooperates with the movable pipe pressing device so that the pipe from the bottom surface of the pipe disc to the pipe passage is tightened, and the formed pipe connection line is in a downward pulling pipe state; the pipe disc includes a rotating axis, and a pipe extending device is arranged on the horizontal plane of the axis, and the pipe driving device and the movable pipe pressing device are arranged on the pipe extending device.

[0016] According to one embodiment of the present invention, it also includes a positioning device, which is located opposite to the bottom surface of the tube disk and 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 sleeve wrapping the rotating shaft, a tube extension device connected to the sleeve, an outer slide rail is provided on the outer surface of the rotating shaft, and a structure adapted to the outer slide rail is provided inside the sleeve. 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; within a unit time, the angle of rotation of the tube disk is proportional to the angle of rotation of the rotating shaft.

[0018] Compared with the prior art, in the tube coil assembly of the present invention, when the tube is released from the tube coil, the first tube pressing surface and the second tube pressing surface cooperate with each other to limit the movement of the tube, and at the same time the first tube pressing surface rotates autonomously and applies a pulling force to the tube in the same direction as the tube release direction, so that the tube between the tube coil and the tube passage is in a taut state, so that the tubes on the tube coil are in a taut state before entering the tube passage during the tube release process, and the tubes that are not released from the tube coil during the tube release process can still be neatly wound on the tube coil without loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the connection relationship and structure between the coil assembly, the wheel body and the drive device when the coil assembly is released;

[0020] Figure 2 for Figure 1 Side view of

[0021] Figure 3 It is a schematic diagram of the connection relationship and structure between the coil assembly, the wheel body and the drive device when the coil assembly is retracted;

[0022] Figure 4 for Figure 3 Side view of

[0023] Figure 5 A schematic diagram of a watering vehicle having a pipe tray assembly;

[0024] In the figure: 1. pipe disc, 11. first input sprocket, 12. first output sprocket, 2. pipe driving device, 21. driver, 22. rotating shaft, 3. movable pipe pressing device, 4. wheel body, 5. pipe extension device, 51. slideway, 6. positioning device, 61. rotating shaft, 62. bushing, 63. second input sprocket, 7. driving device, 71. driving motor, 72. output driving shaft, 73. output sprocket, 74. transmission gear, 75. follower gear

[0025] The realization of the functions and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

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

[0028] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0030] The coil assembly of this embodiment is designed and developed to ensure that the hoses left on the coil remain neatly and tightly wound on the coil during the unwinding process. Figures 1 to 4The coil assembly includes a tube coil 1, a tube driving device 2 and a movable tube pressing device 3. The tube coil 1 has a bottom surface 11 for winding tubes. The tube driving device 2 forms a first tube pressing surface that rotates independently. The movable tube pressing device 3 can be movably arranged on the opposite side of the first tube pressing surface. The movable tube pressing device 3 forms a second tube pressing surface. A tube passing channel is formed between the first tube pressing surface and the second tube pressing surface. The coil assembly has a first state. In the first state, the tube coil 1 rotates and is in a tube releasing state. The tube released from the tube coil 1 moves outward from the tube passing channel. That is to say, when all the tubes are wound on the tube disc 1, the tubes in the tube passage are limited by the first tube pressing surface and the second tube pressing surface. When the tube begins to be released, the tube disc 1 rotates in the direction opposite to the winding direction of the tube and releases the tube. The first tube pressing surface of the tube driving device 2 rotates autonomously and causes the tubes released from the tube disc 1 to move outward from the tube passage. When the tubes released from the tube disc pass through the tube passage, the first tube pressing surface of the tube driving device 2 rotates and drives the tubes to move outward in the tube releasing direction. The force of the tube driving device 2 on the tube causes the tubes in the tube passage to pull the tubes on the tube disc 1, and causes the tubes between the tube disc 1 and the tube passage to be in a taut state. This allows the tubes on the tube disc 1 to be in a taut state before entering the tube passage during the tube releasing process, and also allows the tubes that have not been released from the tube disc 1 to remain neatly wound on the tube disc 1 without loosening during the tube releasing process.

[0031] See also 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 is formed with the first tube pressing surface. The driver 21 is used to drive the rotating shaft 22 to rotate when the tube reel 1 places the tube. The rotating shaft 22 is perpendicular to the moving direction of the tube through the tube passage. When releasing the pipe, since the rotation of the pipe disc 1 can only release the pipe from the pipe disc 1, and cannot push the pipe to move outward through the pipe passage, the pipe driving device 2 is required to pull the pipe through the pipe passage while the pipe is released from the pipe disc 1. The force pulling the pipe comes from the friction between the first pipe pressing surface and the pipe when it rotates autonomously. Therefore, in actual use, the driver 21 is required to drive the rotating shaft 22 to rotate. The surface of the rotating shaft 22 is the first pipe pressing surface. When the driver 21 drives the rotating shaft 22 to rotate, since the pipe is limited by the first pipe pressing surface and the second pipe pressing surface, friction is generated between the pipe and the first pipe pressing surface and the second pipe pressing surface. When the first pipe pressing surface rotates with the rotating shaft 22, the friction between the first pipe pressing surface and the pipe causes the first pipe pressing surface to generate an outward pulling force on the pipe, and the pulling force pulls the pipe on the pipe disc 1 to move outward through the pipe passage. In order to enable the tube drive device 2 to give a maximum pulling force to the tube released from the tube reel 1 when the tube reel 1 is released, the rotating shaft 22 is required to be perpendicular to the moving direction of the tube through the tube passage, so that under the drive of the driver 1 with the same power, the pulling force formed by the friction between the first tube pressing surface and the tube is the largest.

[0032] In actual use, the linear speed of the bottom surface of the tube disc 1 rotates and the speed of the first tube pressing surface pulling the tubes need to be consistent, that is, the arc length of the bottom surface of the tube disc 1 rotating per unit time needs to be equal to the arc length of the first tube pressing surface rotating, so as to keep the tubes between the tube disc 1 and the tube passage in a taut state. However, since multiple layers of tubes are wound on the bottom surface of the tube disc 1, after the second layer of tubes is wound onto the bottom surface of the tube disc 1, the second layer of tubes is equivalent to being wound on a cylinder with a radius equal to the sum of the bottom radius of the tube disc 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 laying process, if the tube laying speed of the tube disc 1 is equal to the linear speed of the rotation of the first tube pressing surface, the tube laying length of the tubes above the first layer on the tube disc 1 per unit time is actually greater than the arc length of the rotation of the first tube pressing surface per unit time. Therefore, only when only one layer of tubes is wound on the bottom surface of the tube disc 1, the linear speed of the rotation of the first tube pressing surface on the rotating shaft 22 is equal to the tube laying speed of the tube disc 1. When multiple layers of tubes are wound on the bottom surface of the tube disc 1, the rotational linear speed of the first tube pressing surface on the rotating shaft 22 needs to be greater than the tube releasing speed of the tube disc 1, so that the tubes between the tube disc 1 and the tube passage can be kept tight and the tubes on the bottom surface of the tube disc 1 can be tightened. The more layers of tubes wound on the bottom surface of the tube disc 1, the greater the rotational linear speed of the first tube pressing surface on the rotating shaft 22 needs to be than the tube releasing speed of the tube disc 1. In this way, it can be ensured that the tubes between the first tube pressing surface and the tube disc 1 are in a tight state. When the first tube pressing surface on the rotating shaft 22 When the rotational linear speed of the first tube pressing surface is greater than 1.3 times the tube unwinding speed of the tube reel 1, it indicates that there are too many layers of tubes wound on the bottom surface of the tube reel 1. Usually, for the convenience of use, the number of layers of tubes wound on the bottom surface of the tube reel 1 should also be maintained at an appropriate number. When the number of layers is too high, the multiple layers of tubes wound on the bottom surface of the tube reel 1 are prone to tilt due to unstable center of gravity. Therefore, in specific applications, the rotational linear speed of the first tube pressing surface on the rotating shaft 22 is 1.0-1.3 times the tube unwinding speed of the tube reel 1.

[0033] In the present embodiment, the first tube pressing surface is an arc surface matched with the outer curved surface of the tube, that is, a circular arc groove is provided on the surface of the rotating shaft 22, and the surface of the circular arc groove is the first tube pressing surface. The size of the circular arc groove on the rotating shaft 22 is matched with the size of the outer curved surface of the tube. In this way, when the tube enters the tube passing channel, the outer curved surface of the tube is limited by the first tube pressing surface and the second tube pressing surface, and abuts against the first tube pressing surface and the second tube pressing surface, which can increase the contact area between the tube and the first tube pressing surface, and then increase the friction between the tube and the first tube pressing surface when the tube passes through the tube passing channel, so that in the process of releasing the tube, when the driver 21 drives the rotating shaft to rotate, the first tube pressing surface generates a sufficiently large pulling force on the tube.

[0034] In this embodiment, the first tube pressing surface is provided with a soft medium layer, the surface friction of the soft medium layer is greater than the surface friction of the first tube pressing surface; the hardness of the soft medium layer is less than the hardness of the material of the first tube pressing surface. The soft medium can increase the friction between the first tube pressing surface and the tube, and because the hardness of the soft medium on the first tube pressing surface is less than the hardness of the material of the first tube pressing surface, the friction between the tube and the first tube pressing surface can be increased. At the same time, the soft medium layer can also protect the tube, preventing the friction between the first tube pressing surface and the tube from damaging the outer surface of the tube during long-term use, causing the tube to leak and reducing the service life of the tube.

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

[0036] In this embodiment, the second tube pressing surface is provided with a soft medium layer, the surface friction of the soft medium layer is greater than the surface friction of the second tube pressing surface; the hardness of the soft medium layer is less than the hardness of the material of the second tube pressing surface. The soft medium can increase the friction between the second tube pressing surface and the tube, and because the hardness of the soft medium on the second tube pressing surface is less than the hardness of the material of the second tube pressing surface, the friction between the tube and the second tube pressing surface and the tube can be increased, and the tube can be protected at the same time, so as to avoid the friction between the first tube pressing surface and the second tube pressing surface and the tube from damaging the outer surface of the tube during long-term use, causing the tube to leak and reducing the service life of the tube.

[0037] See ,1 and Figure 2In this embodiment, the movable tube pressing device 3 comprises a roller body with an axis and a slide groove 51 arranged on the left and right sides of the roller body. The outer periphery of the roller body is provided with the second tube pressing surface. The axis extends outside the roller body and is rotatably arranged in the slide 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 the 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 2, it limits the movement of the tube. That is to say, in the first state, the tube disc 1 is in a 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 out of the tube passage. Therefore, when the rotating shaft 22 rotates and causes the first tube pressing surface to apply a pulling force to the tube to move out of the tube passage, the tube will apply a force along the moving direction of the tube to the second tube pressing surface while moving. Since the axes at both ends of the roller body of the movable tube pressing device 3 can slide in the slide groove 51, Under the force applied by the tube to the second tube pressing surface, the shafts at both ends of the roller body move to a position in the slide groove 51 along the direction of tube release, and this position is recorded as the first position. The force applied by the tube to the second tube pressing surface can only make the shafts at both ends of the roller body move to the first position in the slide groove 51. Then, after reaching the first position, the force applied by the tube to the second tube pressing surface can only make the shafts at both ends of the roller body rotate in the slide groove 51, and during the rotation, they limit the movement of the tube together with the first tube pressing surface, so that the tube between the tube disc 1 and the tube passage is in a taut state.

[0038] See also Figure 3 and Figure 4In this embodiment, the coil assembly also includes a second state. In the second state, the tube coil 1 rotates and is in a tube-collecting state. The second tube-pressing surface of the movable tube-pressing device 3 is driven to the second position by the force of the tube moving inward, and rotates in the second position, and the area of ​​the tube-passing passage between the second tube-pressing surface of the tube driving device 2 increases. That is, after the tubes on the tube coil 1 are released, the coil assembly also needs a state in which the tube coil 1 is collected. This state is the second state of the coil assembly. In the second state, the tube coil 1 rotates and winds the released tubes onto the bottom surface of the tube coil 1 through the tube-passing passage. In the second state, the rotation direction of the tube coil 1 is opposite to the rotation direction of the tube coil when releasing the tube in the first state. After all the tubes are released, the tubes are laid behind the coil assembly. At this time, the forces on the tubes between the tube-passing passage and the tube coil 1 include the weight of the released tubes and the friction between the tubes and the first tube-pressing surface and the second tube-pressing surface. This force causes the tube coil 1 to be compressed with the tube-passing passage. The pipes between the pipe passages are also kept in a taut state, so that the released pipes can be kept neat and not messy after passing through the pipe passage and winding onto the pipe disc; and because the driver 21 of the pipe driving device 2 only drives the rotating shaft 22 to rotate when releasing the pipe, in the second state, the pipe disc 1 rotates and pulls the released pipe to pass through the pipe passage and wind toward the bottom surface of the pipe disc 1. When the pipe disc 1 starts to rotate and pulls the pipe to pass through the pipe passage and wind toward the bottom surface of the pipe disc 1, because the rotating shaft 22 can only rotate on the pipe extending device, and the shafts at both ends of the roller body of the movable pipe pressing device 3 can slide in the slide groove 51, the friction between the pipe and the first pipe pressing surface The force causes the tube driving shaft 22 to rotate, and the friction force between the tube and the second tube pressing surface causes the tube to generate a force on the second tube pressing surface in the same direction as the tube moving when the tube is collected. This force causes the tube to drive 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 driven to the second position, the friction force between the tube and the second tube pressing surface causes the tube to only drive the roller body to rotate when it is wound toward the bottom surface of the tube disc 1, thereby causing the shafts at both ends of the roller body to rotate in the second position of the slide groove 51. Since the moving direction of the tube in the tube passage is from outside to inside when the tube disc 1 is collected, the tube overcomes the first tube pressing surface when the tube is collected. The extra force of the friction between the first and second tube pressing surfaces will drive the second tube pressing surface to move, that is, drive the shafts at both ends of the roller body to move to the second position of the slide groove 51. The second position is the position where the friction between the tube and the first and second tube pressing surfaces is reduced. 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 tube pressing surfaces becomes larger, that is, the area of ​​the tube passing channel increases. In this way, when collecting the tube, after the shafts at both ends of the roller body of the movable tube pressing device 3 are brought to the second position of the slide groove 51, the tube disc 1 only needs to overcome a smaller friction force to wind the tube onto the bottom surface of the tube disc 1.

[0039] In this embodiment, the axes on both sides of the roller body of the movable pipe 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 axes on both sides of the roller body are limited by inclined slide grooves 51; the axes on both sides of the roller body can rotate between the first position and the second position; the axes on both sides of the roller body can rotate at any position between the first position and the second position; the movable pipe pressing device 3 can cooperate with the pipe to correspondingly realize the pipe releasing function in the first state and the pipe collecting function in the second state.

[0040] That is to say, when the tube is retracted, the friction between the tube and the first tube pressing surface and the second tube pressing surface is increased, especially the friction between the tube and the first tube pressing surface can increase the pulling force of the tube driving device 2 on the tube. Therefore, it is necessary to reduce the area of ​​the tube passage at this time so that the tube is pressed by the first tube pressing surface and the second tube pressing surface. When the tube is retracted, the power for retracting the tube comes from the rotation of the tube disc 1. When the tube disc 1 retracts the tube, what needs to be overcome is the weight of the tube and the friction between the first tube pressing surface and the second tube pressing surface on the tube. At this time, reducing the friction between the tube and the first tube pressing surface and the second tube pressing surface can increase the power for retracting the tube. That is to say, when the tube is released, the distance between the first tube pressing surface and the second tube pressing surface needs to be reduced, that is, the tube passage needs to be rotated. The area of ​​the passage needs to be reduced. When the tube is collected, the distance between the first tube pressing surface and the second tube pressing surface needs to be increased, that is, the area of ​​the tube passage needs to be increased. If the chute 51 is set horizontally, only when the tube driving device 2 and the movable tube pressing device 3 are directly opposite, the distance between the two will be the smallest. At this time, the contact area between the first tube pressing surface and the second tube pressing surface and the tube is also the largest. When the tube is released, the tube drives the movable tube pressing device 3 to move in the chute, which will only increase the distance between the first tube pressing surface and the second tube pressing surface, and reduce the contact area between the tube and the first tube pressing surface and the second tube pressing surface, which will reduce the friction between the tube and the first tube pressing surface and the second tube pressing surface. Therefore, the coil assembly of this embodiment sets the chute 51 tilted. , and the height of the end close to the tube disc 1 is higher than the height of the end away from the tube disc 1. In this way, when releasing the tube, the tube drives the movable tube pressing device 3 to move along the slide groove 51 toward the end away from the tube disc 1, and the shafts at both ends of the roller body move downward along the slide groove 51. When collecting the tube, the tube drives the movable tube pressing device 3 to move along the slide groove 51 toward the end close to the tube disc 1, and the shafts at both ends of the roller body move upward along the slide groove 51. When releasing the tube, the position of the shaft at both ends of the roller body of the movable tube pressing device 3 is the first position, and when collecting the tube, the position of the shaft at both ends of the roller body is the second position, so that the second position is higher than the first position; if the tubes wound on the bottom surface of the tube disc 1 are all released, the position of the shaft at both ends of the roller body in the slide groove 51 The first position is recorded as the second position. When all the pipes are wound on the bottom surface of the pipe disc 1, the positions of the axes at both ends of the roller body in the slide groove 51 are recorded as the first position. The first position is the lowest point of the slide groove 51, and the second position is the highest point of the slide groove 51. When the pipes are released to different lengths, the positions of the axes at both ends of the roller body in the slide groove 51 are different. When the lengths of all released pipes are different, the positions of the axes at both ends of the roller body in the slide groove 51 will also change. Therefore, the axes 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 pipe pressing device 3 can cooperate with the pipe to realize the pipe releasing function in the first state and the pipe collecting function in the second state.

[0041] See also Figure 5The invention also relates to a watering vehicle, which has the above-mentioned coil assembly, and the watering vehicle also includes a wheel body 4. The wheel body 4 is used to drive the watering vehicle to move in the field when the watering vehicle performs watering and irrigation operations on the field, and move from the end close to the water supply point to the end away from the water supply point, and return to the end close to the water supply point after moving to the end away from the water supply point. When the watering vehicle moves from the end close to the water supply point to the end away from the water supply point, the coil assembly is in a first state, and the pipe disc 1 is in a pipe releasing state. When the coil assembly releases the pipe, if the pipe disc 1 rotates too fast, the length of the pipe released by the pipe disc 1 per unit time will be greater than the distance that the wheel body 4 drives the watering vehicle to travel, so that a large number of pipes will be accumulated on the field behind the watering vehicle, which not only wastes the pipes, but also the pipes are not straightened. The twisted parts of the pipes will affect the flow of water and the water output of the watering vehicle when watering. If the pipe disc 1 rotates too slowly, the length of the pipe released by the pipe disc 1 per unit time will be less than the distance that the wheel body 4 drives the watering vehicle to travel. When the watering vehicle moves from the end far away from the watering point to the end near the watering point, the pipe 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 wound on the bottom surface of the pipe coil 1 per unit time will be greater than the distance that the watering vehicle is driven by the wheel body 4 to travel, and the pipe will be pulled, thereby disconnecting the pipe from the watering point. If the rotation speed of the pipe coil 1 is too slow when retracting the pipe, the length of the pipe wound on the bottom surface of the pipe coil 1 per unit time will be less than the distance that the watering vehicle is driven by the wheel body 4 to travel, and the pipe is accumulated in front of the moving direction of the watering vehicle and will be crushed by the wheel body 4 of the watering vehicle, affecting the stability of the movement of the watering vehicle, the water output when the watering vehicle is watering, and the service life of the pipe. Therefore, the speed of retracting the pipe body 1 is adapted to the speed of the watering vehicle moving toward the end near the watering point. Since the moving speed of the watering truck is determined by the rotational angular velocity of the wheel body 4 and the pipe placing and collecting speed of the pipe disc 1 is determined by the rotational angular velocity of the pipe disc 1 , the rotational angular velocity of the wheel body 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, so that the pipes from the bottom surface of the pipe disc 1 to the pipe passage are tightened, and the formed pipe connection line is in a downward pipe pulling state. That is to say, when the watering vehicle moves from the end close to the water supply point to the end far away from the water supply point, the coil assembly is in the first state, and the pipe disc 1 starts to release the pipes. When the pipe disc 1 releases the pipes, the pipes move outward through the pipe passage and are laid on the field behind the moving direction of the watering vehicle. Due to the gravity of the released pipes, the pipes that have been released and laid on the bottom surface through the pipe passage have a downward pulling force on the pipes between the pipe disc 1 and the pipe passage, so that the pipes between the bottom surface of the pipe disc 1 and the pipe passage are tightened, and the connection line of the tightened pipes is in a downward pipe pulling state.

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

[0044] See also Figure 5In this embodiment, the watering vehicle further comprises a positioning device 6, which is located opposite to the bottom surface of the pipe disc 1 and is fixedly connected to the pipe extension device 5. The positioning device 6 is used to drive the pipe extension device 5 to move from the first side of the bottom surface of the pipe disc 1 to the second side, and from the second side to the first side. When the coil assembly is applied to the watering vehicle, due to the relatively large length of the field, the coil assembly on the watering vehicle needs to wind a pipe of sufficient length to follow the watering vehicle and supply water to the watering vehicle. However, the number of turns of the pipe on the bottom surface of the pipe disc 1 cannot be too high. If it is too high, the pipe wound on the bottom surface of the pipe disc 1 is prone to tilt due to unstable center of gravity. Therefore, when the coil assembly is applied to the watering vehicle, the width of the bottom surface of the pipe disc 1 is at least greater than the length of two pipe diameters. In the process of winding the pipe on the bottom surface of the pipe disc 1, the positioning device 6 drives the pipe extension device 5 to move back and forth from the first side of the bottom surface of the pipe disc 1 to the second side. In the process of the pipe extension device 5 moving, the pipe extension device 5 guides the pipe passing through the pipe. The pipe of the channel starts to be wound from the first edge of the first layer of the bottom surface of the pipe disc 1, and after winding one circle, the second circle is wound next to the first circle until the first layer of pipes is wound to the second edge of the bottom surface of the pipe disc 1. After reaching the second edge, the pipe starts to be wound to the second layer at the second edge, and starts to be wound from the second edge of the bottom surface of the pipe disc 1 to the first edge under the guidance of the pipe extension device 5. After the second layer of pipes is wound one circle, the second circle is wound next to the first circle until the second layer of pipes is wound to the second edge of the bottom surface of the pipe disc. After reaching the second edge, the pipe starts to be wound to the third layer at the second edge, and starts to be wound from the second edge of the bottom surface of the pipe disc 1 to the first edge under the guidance of the pipe extension device 5. This is repeated in sequence until all the pipes are wound to the bottom surface of the pipe disc 1. In the process of winding the pipes to the bottom surface of the pipe disc 1, the positioning device 6 drives the pipe extension device 5 to move from the first edge of the bottom surface of the pipe disc 1 to the second edge, and from the second edge to the first edge. The pipe extension device 5 guides the pipes to be wound in each layer in sequence, so that the pipes can be neatly wound layer by layer on the bottom surface of the pipe disc 1 for multiple circles.

[0045] In actual use, the pipe wound on the pipe disc is connected to the water supply point through the pipe passage. When the watering truck is at the end close to the water supply point, the pipe is wound on the pipe disc 1. When the watering truck moves from the water supply point to the end away from the water supply point, the pipe disc 1 will rotate with the movement of the watering truck. During the rotation of the pipe disc 1, the pipe wound on the bottom surface of the pipe disc 1 begins to be released from the pipe disc 1 and laid on the field behind the watering truck. When the watering truck moves to the end of the field, that is, the end of the watering truck away from the water supply point, the watering truck begins to return from the end away from the water supply point to the end close to the water supply point. When the watering truck returns from the end away from the water supply point to the end close to the water supply point, the pipe disc 1 will rotate with the movement of the watering truck, and the rotation direction of the pipe disc 1 is opposite to the rotation direction when the watering truck moves away from the fixed water supply point, and the pipe laid on the field is re-wound onto the bottom surface of the pipe disc 1. That is to say, in the first state, the watering truck moves from the end close to the fixed water supply point to the end far away from the fixed water supply point. At this time, the pipe disc 1 is in the pipe releasing state, and the pipes wound on the bottom surface of the pipe disc 1 move outward through the pipe passing channel and are laid on the field behind the watering truck. At this time, the rotation direction of the pipe disc 1 is the pipe releasing direction, and the moving direction of the watering truck is the forward direction. In the second state, the watering truck moves from the end far away from the water supply point to the end close to the water supply point, and the pipe disc 1 is in the pipe collecting state. The pipes move from the outside to the inside through the pipe passing channel and are wound on the pipe disc. The rotation direction of the pipe disc is the pipe collecting direction, and the moving direction of the watering truck is the backward direction. When the tube reel 1 releases or retracts the tube, the tube passes through the tube channel, so when the tube is coiled around the bottom surface of the tube reel 1 or released around the bottom surface of the tube reel 1, the positioning device 6 drives the tube extending device 5 to move just enough to wrap one end of the tube around the bottom surface of the tube reel 1 or release one circle. The speed of releasing or retracting the tube reel 1 is determined by the rotation speed of the tube reel 1, and the moving speed of the tube extending device 5 is determined by the moving speed of the positioning device 6. Therefore, in the first state and the second state, the rotation angle of the tube reel 1 is proportional to the moving speed of the positioning device 6.

[0046] See also Figure 1 and Figure 3 In this embodiment, the positioning device 6 includes a rotating shaft 61 and a sleeve 62 wrapping the rotating shaft 61, the sleeve 62 is connected to the tube extension device 5, the outer surface of the rotating shaft 61 is provided with an outer slide rail, and the sleeve 62 is provided with a structure adapted to the outer slide rail. In the first state, the rotating shaft 61 rotates in a first rotation direction adapted to the first state; in the second state, the rotating shaft 61 rotates in a second rotation direction, which is opposite to the first rotation direction; within a unit time, the rotation angle of the tube disk 1 is proportional to the rotation angle of the rotating shaft 61.

[0047] That is to say, if the rotating shaft 61 rotates clockwise when collecting the tubes, the winding direction of the first layer of tubes on the bottom surface of the tube disk 1 is clockwise and is wound from the first side of the bottom surface of the tube disk 1 to the second side in sequence, the winding direction of the second layer of tubes is clockwise and is wound from the second side of the bottom surface of the tube disk 1 to the first side in sequence, the winding direction of the third layer of tubes is clockwise and is wound from the first side of the bottom surface of the tube disk 1 to the second side in sequence, and so on; when releasing the tubes, the rotating shaft 61 rotates counterclockwise, and if the last layer of tubes is wound clockwise, the tubes are wound from the first side of the bottom surface of the tube disk 1 to the second side in sequence, and so on. If the number of layers of a layer of tubes is even, when releasing the tubes, the tubes of the last layer are released one circle at a time from the first side of the bottom surface of the tube reel 1 to the second side, and the second-to-last tubes are released one circle at a time from the second side of the bottom surface of the tube reel 1 to the first side, and so on. In general, when collecting the tubes, the tubes with an even number of layers are wound in a clockwise direction and are wound from the second side of the bottom surface of the tube reel 1 to the first side, and the tubes with an odd number of layers are wound in a clockwise direction and are wound from the first side of the bottom surface of the tube reel 1 to the The second is wound in sequence; when releasing the tubes, for the tubes with an even number of layers, the releasing direction of the tubes is from the first side of the bottom surface of the tube disk 1 to the second side one by one, and for the tubes with an odd number of layers, the releasing direction of the tubes is from the second side of the bottom surface of the tube disk 1 to the first side one by one; but in the first state, the rotating shaft 61 always keeps rotating in the first rotating direction, and in the second state, the rotating shaft 61 always keeps rotating in the second rotating direction. In the first state and the second state, when the positioning device 6 reciprocates between the first side and the second side of the tube disk 1, it relies on the cooperation between the outer slide rail provided on the outer surface of the rotating shaft 61 and the structure inside the shaft sleeve 62 that is adapted to the outer slide rail. This structure enables the shaft sleeve 62 to move on the outer slide rail to one end of the outer slide rail, and the sliding direction of the shaft sleeve 62 on the outer slide rail changes when it slides to the other end. The sliding direction of the shaft sleeve 62 on the outer slide rail changes again, and the sliding direction of the shaft sleeve 62 at both ends of the outer slide rail is changed to change the moving direction of the tube extending device 5 driven by the positioning device 6. At the same time, since the speed of releasing or collecting the tubes of the tube reel 1 is determined by the rotation speed of the tube reel 1, and the moving speed of the tube extending device 5 is determined by the moving speed of the positioning device 6, and the moving speed of the positioning device 6 is determined by the rotation speed of the rotating shaft 51, the rotation angle of the tube reel 1 is proportional to the rotation angle of the rotating shaft 61 per unit time, so that it can be ensured that when the tube is wound around the bottom surface of the tube reel 1 or released around the bottom surface of the tube reel 1, the rotating shaft 61 drives the tube extending device 5 through the shaft sleeve 62 to move just enough to wrap one end of the tube around the bottom surface of the tube reel 1 or release one circle.

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

[0049] Because when collecting the pipe, when the pipe is wound from the first side of the bottom surface of the pipe disc 1 to the second side, it is necessary to start another layer, and then wind it from the second side of the bottom surface of the pipe disc 1 to the first side. After winding to the first side, it is necessary to start another layer, and then wind it from the first side to the second side again, and so on. When releasing the pipe, after the pipe is released from the first side of the bottom surface of the pipe disc 1 to the second side, it is necessary to start another layer and release it from the second side to the first side. Then after releasing it to the first side, it is necessary to start another layer, and then release it from the first side to the second side again, and so on. When placing or collecting the tube, the rotating shaft 61 drives the tube extension device 5 to move back and forth along the tube collecting or placing direction through the shaft sleeve 62. Therefore, when the tube disc 1 places or collects the tube to the first side of the bottom surface of the tube disc 1, the shaft sleeve 62 also needs to move on the outer slide rail of the rotating shaft 61 to the end corresponding to the first side. When the tube disc 1 places or collects the tube to the second side of the bottom surface of the tube disc 1, the shaft sleeve 62 also needs to move on the outer slide rail of the rotating shaft 61 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, and the range between the first end and the second end is the working area of ​​the outer slide rail. The length of the working area is adapted to the length of the bottom surface of the tube disc 1. In this way, when the tube disc 1 is collected or released to the first side of the bottom surface of the tube disc 1, the sleeve 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 in the sleeve 62 that is adapted to the outer slide rail changes the moving direction of the sleeve 62 on the outer slide rail, and the sleeve 62 begins to move from the outer slide rail to the first end. The first end of the working area moves toward the second end, and the tube also begins to be collected or released from the first edge of the bottom surface of the tube disc 1 to the second edge. When the sleeve 62 moves to the second end of the working area of ​​the outer slide rail, the tube is also wound or released to the second edge 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 sleeve 62 that is adapted to the outer slide rail changes the moving direction of the sleeve 62 on the outer slide rail again, and the sleeve 62 begins to drive the tube extension device 5 to move from the second end of the working area of ​​the outer slide rail to the first end, and so on. Since in the first state, the rotating shaft 61 always rotates in the first rotation direction, and in the second state, the rotating shaft 61 always rotates in the second rotation direction, so when the positioning device 6 moves back and forth between the first side and the second side of the tube disk 1 in the first state and the second state, it relies on the cooperation between the outer slide rail provided on the outer surface of the rotating shaft 61 and the structure inside the sleeve 62 that is adapted to the outer slide rail. This structure changes the sliding direction of the sleeve 62 on the outer slide rail when the sleeve 62 slides to one end of the outer slide rail, and changes again when it slides to the other end. The sliding direction of the sleeve 62 on the outer slide rail is changed by changing the sliding direction of the sleeve 62 at both ends of the outer slide rail to change the moving direction of the tube extension device 5 driven by the positioning device 6.

[0050] When the watering truck starts working, the wheel body drives the watering truck to move synchronously with the tube tray 1 releasing or collecting the tubes and maintain an adaptive speed. When the tube tray 1 releases or collects the tubes, the positioning device 6 drives the tube extension device 5 to move synchronously with the tube tray 1 releasing the tubes and maintain an adaptive speed. If any one of the wheel body 4, the tube tray 1 or the positioning device 6 runs ahead of time or behind, it will affect the coordination between the tube and the watering truck. If the running speed is not compatible, it will also cause the tube and the watering truck to not be properly coordinated. Therefore, in this embodiment, the rotating shaft 61, the wheel body 4 and the tube tray 1 are all driven by the same driving device 7 and the rotation angles are proportional. The rotation directions of the wheel body 4 and the tube tray 1 are opposite. Please refer to Figure 1 and Figure 3 In specific application, the driving device 7 includes a driving motor 71, an output driving shaft 72, an output sprocket 73, a transmission gear 74 and a follower gear 75. The output end of the driving motor 71 is connected to the output sprocket 73 and the transmission gear 74. The follower gear 75 is arranged on the output driving shaft 72 and meshes with the transmission gear 74. Two of the wheel bodies 4 are connected to the two ends of the output driving shaft 72. The pipe disc 1 is provided with a central shaft, and the central shaft is provided with a first input sprocket 11 and a first output sprocket 12. The rotating shaft 61 is provided with a second input sprocket 63. The first input The sprocket 11 is connected to the output sprocket 73 through a chain transmission, and the first output sprocket 12 is connected to the second input sprocket 63 through a chain transmission. When the drive motor 71 is started, the output sprocket 73 and the transmission gear 74 connected to the driving end of the drive motor 71 rotate, and the transmission gear 74 drives the follower gear 75 to rotate, and the follower gear 75 drives the output drive shaft 72 to rotate. The wheel body 4 arranged at both ends of the output drive shaft 72 rotates to move the watering truck away from the water supply point, and the output sprocket 73 drives the first input sprocket 11 to rotate through the chain, and then The pipe disc 1 is rotated and begins to release 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 through the chain. The second input sprocket 63 drives the rotating shaft 61 to rotate. The positioning device 6 starts to drive the pipe extension device 5 to reciprocate between the first side and the second side of the bottom surface of the pipe disc 1. When the watering vehicle moves to the end away from the water supply point, the driving motor 71 rotates in the reverse direction. The output sprocket 73 and the transmission gear 74 connected to the driving end of the driving motor 71 rotate in the reverse direction. The transmission gear 74 drives the follower gear 75 to rotate. The follower gear 75 drives the output drive shaft 72 to rotate, and the wheel body 4 arranged at both ends of the output drive shaft 72 rotates to move the watering truck toward the water supply point. The output sprocket 73 drives the first input sprocket 11 to rotate through the chain, thereby causing the pipe disc 1 to rotate and start to collect the pipes. The first output sprocket 12 rotates with the central axis of the pipe disc 1 and drives the second input sprocket 63 to rotate through the chain. The second input sprocket 63 drives the rotating shaft 61 to rotate, and the positioning device 6 starts to drive the pipe extending device 5 to reciprocate between the first side and the second side of the bottom surface of the pipe disc 1.

[0051] The above are only 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 in the protection scope of the present invention.

Claims

1. A coil assembly, characterized in that: include: a tube coil having a bottom surface on which the tube is wound; A tube driving device formed with a first tube pressing surface that rotates autonomously; A movable pipe pressing device, which is movably arranged on the opposite side of the first pipe pressing surface, the movable pipe pressing device is formed with a second pipe pressing surface, and a pipe passage is formed between the first pipe pressing surface and the second pipe pressing surface; The coil assembly has a first state. In the first state, the tube coil rotates and is in a tube releasing state, and the tube released from the tube coil moves outward from the tube passage.

2. The coil assembly according to claim 1, characterized in that The tube driving device includes a driver and a rotating shaft, the rotating shaft is formed with the first tube pressing surface, the driver is used to drive the rotating shaft to rotate when the tube coil is unwinding the tube, the rotating shaft is perpendicular to the moving direction of the tube through the tube passage; the rotational linear speed of the first tube pressing surface on the rotating shaft is 1.0-1.3 times the tube unwinding speed of the tube coil.

3. The coil assembly according to claim 1, characterized in that The first tube pressing surface and / or the second tube pressing surface are arc surfaces adapted to the outer curved surface of the tube, and the first tube pressing surface and / or the second tube pressing surface are provided with a soft medium layer, and the surface friction of the soft medium layer is greater than the surface friction of the tube pressing surface; the hardness of the soft medium layer is less than the hardness of the material of the tube pressing surface.

4. The coil assembly according to claim 1, characterized in that The movable tube pressing device comprises a roller body with an axis and slide grooves arranged on the left and right sides of the roller body, the outer periphery of the roller body is provided with the second tube pressing surface, the axis extends outside the roller body and is rotatably arranged in the slide grooves 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 is driven to the first position by the force of the tube moving outward, and rotates at the first position, and together with the first tube pressing surface of the tube driving device, limits the movement of the tube.

5. The coil assembly according to any one of claims 1 to 4, characterized in that: The coil assembly also includes a second state, in which the tube coil rotates and is in a tube retracting state; the second tube pressing surface of the movable tube pressing device is driven to a second position by the force of the tube moving inward, and rotates at the second position, and the tube passage area between the second tube pressing surface and the first tube pressing surface of the tube driving device is increased.

6. The coil assembly according to claim 5, characterized in that The shafts on both sides of the roller body of the movable tube 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; and the shafts on both sides of the roller body are limited by inclined sliding grooves; the shafts on both sides of the roller body can rotate between 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 tube pressing device can cooperate with the tube to correspondingly realize the tube releasing function in the first state and the tube collecting function in the second state.

7. A watering truck, comprising the coil assembly according to any one of claims 1 to 6, characterized in that: It also includes a wheel body, and the rotation angular velocity of the wheel body is proportional to the rotation angular velocity of the tube disk.

8. The watering vehicle according to claim 7, characterized in that: In the first state, the tube driving device cooperates with the movable tube pressing device so that the tube from the bottom surface of the tube disc to the tube passage is tightened, and the formed tube connection line is in a downward pulling tube state; the tube disc includes a rotating axis, and a tube extending device is arranged on the horizontal plane of the axis, and the tube driving device and the movable tube pressing device are arranged on the tube extending device.

9. The watering vehicle according to claim 8, characterized in that: It also includes a positioning device, which is located opposite to the bottom surface of the tube disk and 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.

10. The watering vehicle according to claim 9, characterized in that: The positioning device includes a rotating shaft and a sleeve wrapping the rotating shaft, the sleeve is connected to the tube extension device, the outer surface of the rotating shaft is provided with an outer slide rail, and the sleeve is provided with a structure adapted to the outer slide rail. 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; within a unit time, the angle of rotation of the tube disk is proportional to the angle of rotation of the rotating shaft.

Images