Agrochemical spraying equipment including hose winder

Abstract

Disclosed is agrochemical spraying equipment including a hose winder. The agrochemical spraying equipment according to the present invention comprises: a movable cart which can easily rotate to the left and right when moving on the ground; a nozzle assembly which is installed on the movable cart and sprays agrochemicals toward crops; an agrochemical supply pipe connected to the nozzle assembly to supply agrochemicals to the nozzle assembly; and a hose winder which is installed on the movable cart and around which a hose for transferring agrochemicals from a agrochemical storage tank is wound, wherein the nozzle assembly sprays agrochemicals while vibrating and rotating within a preset rotation angle range.

Description

Pesticide spraying device including a hose winder

[0001] The present invention relates to a pesticide spraying device for spraying pesticides on crops, and more specifically, to a spraying mechanism for efficiently and evenly spraying pesticides on crops and a mechanism of a hose winder for winding a hose that transports pesticides from a pesticide storage tank to a pesticide spraying device.

[0002] A pesticide spraying device is a device that sprays pesticides on crops to prevent various diseases and pests occurring on crops, and is equipped with a nozzle assembly including a spray nozzle suitable for the type of crop or working environment to be sprayed.

[0003] However, conventional pesticide spraying devices equipped with a nozzle assembly in which the spraying direction of the pesticide is fixed as one have limitations in effectively spraying pesticides on various types of crops, and even for the same crop, they have problems in not being able to efficiently and evenly spray pesticides on the crop, especially not evenly spraying on the underside of the leaves of the crop.

[0004] Meanwhile, the pesticide spraying device may be equipped with a hose winder that pulls the hose using motor power and winds it into a coil to facilitate the management of the long hose that transports pesticide from the pesticide storage tank.

[0005] However, there was a problem where the hose winder frequently broke down due to an overload on the motor if it continued to operate even when the hose was fully wound and stopped winding because it got caught on surrounding terrain or installations.

[0006] Accordingly, technology has been developed and applied to prevent the motor from being overloaded while winding the hose using sensors in a hose winder.

[0007] However, pesticide spraying devices equipped with sensors to detect the load of the hose winder motor had the problem that, when the sensors failed, the motor could not be overloaded, and since the motor, as well as the sensors, had to be repaired, the problem could not be solved directly on-site and could only be repaired by a professional technician, thus requiring the pesticide spraying operation to be stopped midway.

[0008] Related prior art documents include Korean Published Utility Model Publication No. 20-2017-0002991 (Title of invention: Spray device for pesticide spraying, Date of publication: August 25, 2017), Korean Published Patent Publication No. 10-2016-0070292 (Title of invention: Hose winding device for pesticide sprayer, Date of publication: June 20, 2016), and Korean Registered Utility Model Publication No. 20-0344812 (Title of invention: Hose winder for pesticide spraying, Date of publication: March 10, 2004).

[0009] The objective of the present invention is to provide a pesticide spraying device equipped with a spraying mechanism capable of efficiently and evenly spraying pesticides onto various types of crops to maximize the effect of pesticide spraying.

[0010] Another objective of the present invention is to provide a pesticide spraying device equipped with a hose winder that can prevent motor overload while winding the hose by means of a mechanical mechanism and allows a worker at the site to easily and directly address problems that occur during the hose winding operation.

[0011] The present invention provides a pesticide spraying device comprising a movable carriage, a nozzle assembly installed on the movable carriage and spraying a pesticide toward crops, a pesticide supply pipe connected to the nozzle assembly to supply the pesticide to the nozzle assembly, and a hose winder installed on the movable carriage and around which a hose for transporting a pesticide from a pesticide storage tank is wound, wherein the nozzle assembly sprays the pesticide while rotating and vibrating within a preset range of rotation angles.

[0012] Preferably, the pesticide spraying device further comprises a rotating mechanism installed on the movable carriage and rotating and vibrating the nozzle assembly in an up-and-down direction within a preset rotation angle range, and the nozzle assembly may include a rotating body part that rotates and vibrates in an up-and-down direction by the rotating mechanism, and a spray nozzle part provided as a pair on the left and right sides with the rotating body part in between, connected to the rotating body part, and rotating and vibrating together with the rotating body part in an up-and-down direction to spray pesticide supplied through the pesticide supply pipe toward the crop.

[0013] Preferably, the rotating mechanism may include a rotating motor, a rotating disk coupled to the rotating shaft of the rotating motor and rotating according to the operation of the rotating motor, an operating link member arranged to extend vertically and arranged to perform reciprocating linear motion in the vertical direction, a conversion link member having a lower end connected at an eccentric position from the center of the rotating disk and converting the rotational motion of the rotating disk into the reciprocating linear motion of the operating link member, and a rotating plate having one end fixedly coupled to the rotating body part of the nozzle assembly and the other end coupled to the operating link member, which rotates and vibrates vertically as the operating link member performs reciprocating linear motion in the vertical direction.

[0014] Preferably, the rotating mechanism may further include a support link member arranged to extend vertically in parallel with the operating link member while spaced apart from the operating link member, and a connecting link member that connects the operating link member and the support link member to each other and connects the upper end of the conversion link member to the operating link member and the support link member to enable reciprocating linear motion in the vertical direction in a structure in which the operating link member and the support link member are integrated.

[0015] Preferably, the nozzle assembly may further include a pesticide supply bolt member, the rear end of which is fixedly coupled to the pesticide supply pipe while positioned through the rotating body portion, and an internal flow path formed therein to deliver the pesticide supplied through the pesticide supply pipe to the spray nozzle portion.

[0016] Preferably, the hose winder may include a frame, a drum rotatably disposed on one side of the frame and on which the hose is wound, a motor providing a driving force to rotate the drum, a driving pulley coupled to the rotation axis of the motor, a driven pulley coupled to the rotation axis of the drum, and a pulley belt connecting the driving pulley and the driven pulley for power transmission between the driving pulley and the driven pulley.

[0017] Preferably, when the hose is being wound by the hose winder and the hose is no longer wound, slip occurs between the drive pulley and the pulley belt, allowing the drive pulley to idle.

[0018] Preferably, the hose winder may further include a displacement adjustment member movably disposed on the frame to support the motor and the drive pulley and to adjust the tension of the pulley belt.

[0019] Preferably, the displacement control unit may include a motor support plate to which the motor is coupled, and a displacement control pin having one side coupled to the frame and the other side coupled to the motor support plate to guide the movement of the motor support plate.

[0020] Preferably, the displacement adjustment pin may be formed in the shape of a bolt having one end rotatably fitted into the frame and the other end having a threaded portion to which the motor support plate is screw-fastened.

[0021] Preferably, the displacement adjustment unit further includes a plurality of fastening members that fix the motor support plate to the frame when the tension of the pulley belt is adjusted, and each of the plurality of fastening members is fastened to the frame, and a plurality of slits extending along the direction of movement of the displacement adjustment unit may be formed.

[0022] Preferably, the driving pulley is positioned above the driven pulley, and the displacement adjustment pin can guide the movement of the motor support plate in the vertical direction.

[0023] According to one embodiment of the present invention, since the nozzle assembly for spraying pesticide toward crops is applied as an 'up-and-down shaking type' that rotates and vibrates in the up-and-down direction within a preset rotation angle range, the effect of efficiently and evenly spraying pesticide onto the underside of the leaves of various types of crops is achieved, thereby maximizing the effectiveness of pesticide spraying.

[0024] In addition, according to one embodiment of the present invention, in a hose winder in which a hose for transporting pesticides is wound, power is transmitted between a drive pulley and a pulley belt by frictional force, and when the hose gets caught while winding the hose and the hose is no longer wound, slip occurs between the pulley belt and the drive pulley, causing the drive pulley to idle, thereby preventing motor overload by a mechanical mechanism rather than an electrical / electronic mechanism.

[0025] FIG. 1 is a perspective view of a pesticide spraying device according to one embodiment of the present invention.

[0026] FIG. 2 is a perspective view illustrating the pesticide supply pipe, nozzle assembly, and rotating mechanism of the pesticide spraying device of FIG. 1.

[0027] FIG. 3 is a perspective view of a hose winder installed in a pesticide spraying device according to one embodiment of the present invention.

[0028] Figure 4 is a front view of the hose winder shown in Figure 3.

[0029] Figure 5 is a plan view of the hose winder shown in Figure 3.

[0030] Fig. 6 is a side view of the hose winder shown in Fig. 3.

[0031] Figure 7 is a side view illustrating the tension control of the pulley belt in the hose winder of Figure 1.

[0032] Figure 8 is a cross-sectional view along line AA of Figure 7.

[0033] In order to fully understand the present invention, the operational advantages of the present invention, and the objectives achieved by the implementation of the present invention, reference must be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

[0034] The present invention will be described in detail below by explaining preferred embodiments with reference to the attached drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted to clarify the gist of the invention.

[0035] FIG. 1 is a perspective view of a pesticide spraying device according to one embodiment of the present invention, and FIG. 2 is a perspective view for explaining a pesticide supply pipe, a nozzle assembly, and a rotating mechanism part of the pesticide spraying device of FIG. 1.

[0036] Referring to FIGS. 1 and 2, the pesticide spraying device according to the present invention is a device that sprays pesticides on crops while moving between various crops such as paprika, and includes a moving carriage (1000), a support frame (2100), a pesticide supply pipe (2200), a nozzle assembly (3000), and a rotating mechanism (4000).

[0037] The mobile cart (1000) is a means for moving a pesticide spraying device along a rail installed on the ground or moving it on the ground. When moving along a rail installed on the ground for pesticide spraying, it operates automatically according to a preset control process, and when moving on the ground to move to another location, it can be operated manually by a worker. Additionally, the mobile cart (1000) may be provided in a manner in which it is equipped with a power means (not shown), such as an electric motor or an internal combustion engine, and moves using the driving force provided by such power means. Alternatively, the mobile cart (1000) may be provided in a manner in which it moves by the human power of a worker without a separate power means.

[0038] As shown in FIG. 1, the movable trolley (1000) includes a trolley body (1100), a trolley handle (1150), a front rail wheel (1210), a front rail guide (1220), a front ground wheel (1230), a rear rail wheel (1310), a rear rail guide (1320), and a rear ground wheel (1410). For reference, in this specification, 'front' refers to the forward direction of travel of the movable trolley (1000), and 'rear' refers to the reverse direction of travel of the movable trolley (1000).

[0039] The trolley body (1100) is a part that forms the body of the movable trolley (1000) as shown in FIG. 1, and provides a frame on which a support frame (2100), a pesticide supply pipe (2200), a nozzle assembly (3000), a rotating mechanism (4000), a hose winder (1, see FIG. 3), etc. are installed. That is, the support frame (2100), the pesticide supply pipe (2200), the nozzle assembly (3000), the rotating mechanism (4000), and the hose winder (1) are installed on the trolley body (1100) of the movable trolley (1000).

[0040] The trolley handle (1150) is a part that is grasped by a worker when the movable trolley (1000) is moved manually by a worker, and is provided on the rear side of the trolley body (1100) as shown in FIG. 1. Meanwhile, although not shown in the attached drawings, a control panel (not shown) for a worker to control the overall operation of the pesticide spraying device may be installed in the upper area of ​​the trolley handle (1150).

[0041] The front rail wheel (1210) is provided in the form of a rotating roller or a rotating drum as shown in FIG. 1 and is provided on each side of the first drive shaft (1250) which extends in the left and right directions from the front side of the movable trolley (1000). The front rail wheel (1210) is fixedly coupled to the end of the first drive shaft (1250) through a connecting shaft (1210a). Accordingly, when the movable trolley (1000) moves along a rail installed on the ground, the front rail wheel (1210) comes into contact with the rail and rotates integrally with the first drive shaft (1250).

[0042] As shown in FIG. 1, the front rail guide (1220) is provided in the shape of a disc overall and is provided on each side of the first drive shaft (1250) extending in the left and right directions from the front side of the movable trolley (1000), and is positioned between the front rail wheel (1210) and the front ground wheel (1230). This front rail guide (1220) prevents the front rail wheel (1210) from deviating from the rail when the movable trolley (1000) moves along the rail. At this time, in order to reduce frictional force by reducing the contact area with the rail as the movable trolley (1000) moves along the rail, the front rail guide (1220) has an outer sloping surface formed such that the outer diameter gradually decreases as it goes from the front ground wheel (1230) to the front rail wheel (1210), that is, from the outside to the inside, as shown in FIG. 1. Meanwhile, the front rail guide (1220) may be fixedly coupled to the front ground wheel (1230) described later or formed integrally with the front ground wheel (1230).

[0043] As shown in FIG. 1, the front ground wheels (1230) are provided on each side of the first drive shaft (1250) extending in the left and right directions from the front side of the movable trolley (1000), and are positioned on the outside of the front rail wheels (1210). These front ground wheels (1230) rotate in contact with the ground when the movable trolley (1000) moves on the ground.

[0044] The rear rail wheel (1310) is provided in the form of a rotating roller or a rotating drum as shown in FIG. 1 and is provided on each side of the second drive shaft (1350) extending in the left and right directions from the rear side of the movable trolley (1000). The rear rail wheel (1310) is fixedly connected to the end of the second drive shaft (1350) through a connecting shaft (1310a). Accordingly, when the movable trolley (1000) moves along a rail installed on the ground, the rear rail wheel (1310) comes into contact with the rail and rotates integrally with the second drive shaft (1350).

[0045] As shown in FIG. 1, the rear rail guide (1320) is provided in the shape of a disc overall and is provided on each side of the second drive shaft (1350) extending in the left and right directions from the rear side of the movable trolley (1000), and is positioned on the outside of the rear rail wheel (1310). This rear rail guide (1320) prevents the rear rail wheel (1310) from deviating from the rail when the movable trolley (100) moves along the rail. At this time, the rear rail guide (1320), like the front rail guide (1220) described earlier, has an outer sloping surface (1320a) formed such that the outer diameter gradually decreases as it goes toward the rear rail wheel (1310), that is, from the outside to the inside, as shown in FIG. 1, in order to reduce the contact area with the rail as the movable trolley (1000) moves along the rail. Meanwhile, the rear rail guide (1320) is provided so that when the moving carriage (1000) moves on the ground, it does not come into contact with the ground and floats above the ground.

[0046] As shown in FIG. 1, the rear ground wheels (1410) are provided on the left and right sides of the movable trolley (1000) at the rear side of the movable trolley (1000), and are positioned further rearward than the rear rail wheels (1310) of the movable trolley (1000). These rear ground wheels (1410) rotate in contact with the ground when the movable trolley (1000) moves on the ground. Specifically, as shown in FIG. 1, the rear ground wheels (1410) are provided on the left and right sides of the wheel supports (1450) that extend from the rear side of the movable trolley (1000) in the left and right directions, and are coupled to the wheel supports (1450) so that they can rotate in the left and right directions when the movable trolley (1000) moves on the ground by a worker. For example, the rear ground wheel (1410) can be provided as a so-called ‘caster wheel’ capable of rotating in the left and right directions.

[0047] A support frame (2100) is provided in an up-and-down direction on the trolley body (1100) of the movable trolley (1000) at the front side of the movable trolley (1000) as shown in FIG. 1, as a means to support the pesticide supply pipe (2200) and the nozzle assembly (3000) while also providing an installation space for the rotating mechanism (4000).

[0048] The pesticide supply pipe (2200) is a means for supplying pesticide transferred from a pesticide storage tank (not shown) to a nozzle assembly (3000), and as shown in FIGS. 1 and 2, it is provided as a pipe extending vertically from the rear side of a plurality of nozzle assemblies (3000) and is fixedly coupled to one side of a support frame (2100). In order for the pesticide supply pipe (2200) to supply pesticide to a plurality of nozzle assemblies (3000), as shown in FIG. 2, a plurality of branch pipes (2210) connected to the nozzle assembly (3000) are formed at regular intervals along the length of the pesticide supply pipe (2200). Accordingly, a plurality of nozzle assemblies (3000) can be installed by connecting them to the pesticide supply pipe (2200) at regular intervals along the length of the pesticide supply pipe (2200), that is, in the vertical direction, through a plurality of branch pipes (2210).

[0049] Meanwhile, the pesticide supply pipe (2200) is connected to the pesticide storage tank via a hose (not shown) to receive pesticide from the pesticide storage tank. For reference, the pesticide storage tank may be installed separately from the pesticide spraying device and together with a pesticide pump (not shown) at a designated location away from the pesticide spraying device, or alternatively, it may be installed together with the pesticide pump on the trolley body (1100) of the mobile trolley (1000).

[0050] A nozzle assembly (3000) is a means for spraying pesticide supplied through a pesticide supply pipe (2200) toward crops, and in order to efficiently and widely spray pesticide on crops when the pesticide spraying device moves between crops, a plurality of nozzle assemblies (5 in the case of this embodiment) are installed at regular intervals in the longitudinal direction, i.e., the vertical direction, of the pesticide supply pipe (2200) fixedly coupled to a support frame (2100) as shown in FIGS. 1 and 2.

[0051] Preferably, the nozzle assembly (3000) is provided as a vibrating nozzle assembly that rotates and vibrates (or reciprocates) in one direction and the other within a preset rotation angle range, so as to efficiently and evenly spray pesticide onto crops to maximize the effect of pesticide spraying. In this embodiment, the nozzle assembly (3000) is provided as an up-and-down vibrating nozzle assembly that rotates and vibrates in the up-and-down direction relative to the horizontal axis (or horizontal axis) within a preset rotation angle range by the rotating mechanism (4000) as shown in FIG. 2, so that pesticide is evenly sprayed to the underside of the leaves of the crops. However, unlike this embodiment, the nozzle assembly may be provided as a forward-and-backward vibrating nozzle assembly that rotates and vibrates in the forward-and-backward direction relative to the vertical axis (or vertical axis) within a preset rotation angle range, depending on the type and characteristics of the crops to be targeted.

[0052] Specifically, the nozzle assembly (3000) includes a rotating body part (3100), a spray nozzle part (3200), and a pesticide supply bolt member (3300) as shown in FIG. 2.

[0053] The rotating body part (3100) is a part that rotates and vibrates in the up and down direction within a rotation angle range preset by the rotating mechanism part (4000), and as shown in FIG. 2, it includes a rotating block (3110) that is fixedly coupled to the rotating plate (4100) of the rotating mechanism part (4000) and through which a pesticide supply bolt member (3300) passes, and a pair of nozzle connecting pipes (3130) provided on both the left and right sides of the rotating block (3110) to connect the spray nozzle part (3200).

[0054] The spray nozzle section (3200) sprays pesticide supplied through the pesticide supply pipe (2200), the pesticide supply bolt member (3300), and the nozzle connecting pipe (3130) of the rotating body section (3100) toward the crops. The spray nozzle section (3200) is provided as a pair on the left and right with the rotating body section (3100) in between. The pair of spray nozzle sections (3200) are each connected to the pair of nozzle connecting pipes (3130) of the rotating body section (3100), and sprays pesticide supplied through the pesticide supply pipe (2200) toward the crops while rotating and vibrating in the up and down direction together with the rotating body section (3100), which rotates and vibrates in the up and down direction within a rotation angle range preset by the rotating mechanism section (4000).

[0055] As shown in FIG. 2, the spray nozzle section (3200) includes a spray nozzle (3210), a rotary operating section (3220), an angle adjustment section (3230), and a rotary body connecting pipe (3250). Here, the spray nozzle (3210) sprays pesticide through a spray hole (3210a), the rotary operating section (3220) rotates the nozzle opening of the spray nozzle (3210) to change the position of the spray hole (3210a) of the spray nozzle (3210), the angle adjustment section (3230) adjusts the spray direction or spray angle of the spray nozzle (3210), and the rotary body connecting pipe (3250) connects the spray nozzle section (3200) to the nozzle connecting pipe (3130) of the rotary body section (3100) by a screw connection method. At this time, it is preferable for the spray nozzle section (3200) to position the spray nozzle (3210) at an upward inclination through the angle adjustment section (3230) so that the pesticide is evenly sprayed to the underside of the leaves of the crop. However, the spray nozzle section (3200) disclosed in this embodiment is merely exemplary, and the spray nozzle section applied to the present invention may be implemented with various other configurations and operating mechanisms, and the number of spray nozzle sections may also be appropriately changed.

[0056] The pesticide supply bolt member (3300) is a means for connecting the nozzle assembly (3000) to the pesticide supply pipe (2200), and at the same time, a means for providing a flow path for delivering the pesticide supplied through the pesticide supply pipe (2200) to the spray nozzle part (3200). As shown in FIG. 2, the pesticide supply bolt member (3300) is positioned to penetrate the rotating block (3110) of the rotating body part (3100) in the front-rear direction, and its rear end is exposed to the rear of the rotating block (3110) and fixedly coupled to the branch pipe (2210) of the pesticide supply pipe (2200) by a screw fastening method, and an internal flow path through which the pesticide supplied through the pesticide supply pipe (2200) moves is formed in the longitudinal direction of the pesticide supply bolt member (3300). And, in the pesticide supply bolt member (3300), a pair of left and right through holes (not shown) are formed in a direction intersecting the internal flow path of the pesticide supply bolt member (3300) in a circumferential area that overlaps with the flow path of the nozzle connecting pipe (3130) within the rotating block (3110).

[0057] Accordingly, the nozzle assembly (3000) is rotatable with respect to the pesticide supply pipe (2200) with respect to the pesticide supply pipe (2200) with respect to the pesticide supply pipe (2200) on the axis of the pesticide supply bolt member (3300) which is fixedly coupled to the pesticide supply pipe (2200), and the pesticide supplied through the pesticide supply pipe (2200) can move along the internal flow path of the pesticide supply bolt member (3300) and move along the nozzle connecting pipe (3130) of the rotating body part (3100) through the through hole of the pesticide supply bolt member (3300) and be stably delivered without leakage to the spray nozzle (3210) of the spray nozzle part (3200).

[0058] The rotating mechanism (4000) is a means for operating the nozzle assembly (3000) in an up-and-down shaking manner, that is, for rotating and vibrating (or reciprocating) the nozzle assembly (3000) in an up-and-down direction within a preset rotation angle range, and includes a rotating plate (4100), an operating link member (4200), a support link member (4300), a connecting link member (4400), a rotating motor (4500), a rotating disk (4550), and a conversion link member (4600), as shown in FIGS. 1 and 2.

[0059] One end of the rotating plate (4100) is fixedly connected to the rotating body part (3100) of the nozzle assembly (3000) by welding or the like at the rear side of the nozzle assembly (3000), and the other end is connected to the operating link member (4200) by fastening means such as a bolt / nut. Multiple rotating plates (4100) are provided, one for each of the multiple nozzle assemblies (3000).

[0060] The operating link member (4200) is arranged to extend vertically between the rear side of the nozzle assembly (3000) and the front side of the support frame (2100). The operating link member (4200) is configured to reciprocate linearly in the vertical direction while the other ends of the pivot plates (4100) are joined.

[0061] Accordingly, as the operating link member (4200) moves in a reciprocating linear motion in the up and down direction, the rotating plates (4100) rotate and vibrate in the up and down direction, and as a result, the rotating body part (3100) of the nozzle assembly (3000) fixedly coupled to the rotating plate (4100) rotates and vibrates in the up and down direction within a preset rotation angle range.

[0062] The support link member (4300) is a means of supporting the operating link member (4200) so that the reciprocating linear motion of the operating link member (4200) proceeds stably and smoothly. It is positioned at the rear side of the support frame (2100) so as to be spaced apart from the operating link member (4200) in the front-rear direction and extending vertically in parallel with the operating link member (4200). The support link member (4300) is configured to perform reciprocating linear motion in the vertical direction together with the operating link member (4200) while being coupled to the support frame (2100) through a plurality of second pivot plates (4350) provided at regular intervals along its length. Meanwhile, the length of the support link member (4300) may be formed to be smaller than the length of the operating link member (4200).

[0063] The connecting link member (4400) is a means for connecting the operating link member (4200) and the supporting link member (4300) to each other, and through this connecting link member (4400), the operating link member (4200) and the supporting link member (4300) are arranged to perform reciprocating linear motion in the up and down direction in an integrated structure. The connecting link member (4400) is arranged to extend long in the front and back directions between the operating link member (4200) and the supporting link member (4300), and its front end is connected to the operating link member (4200) by fastening means such as a bolt / nut, and its rear end is connected to the supporting link member (4300) by fastening means such as a bolt / nut. Meanwhile, the connecting link members (4400) are provided in multiple numbers (three in the case of this embodiment) at regular intervals along the longitudinal direction of the operating link member (4200) and the supporting link member (4300) to ensure a solid connection between the operating link member (4200) and the supporting link member (4300).

[0064] A rotary motor (4500) is a means of providing driving force to rotate and vibrate the nozzle assembly (3000) in the up and down direction, and is installed on a support frame (2100) and provided as an electric motor, hydraulic motor, etc. The rotary motor (4500) is positioned so that its rotation axis (4510) is exposed to the outside of the support frame (2100) while being accommodated in an internal space formed in the lower part of the support frame (2100). Then, a rotary disk (4550) is positioned on the left (or right) side of the support frame (2100) and its center is coupled to the rotation axis (4510) of the rotary motor (4500). Accordingly, the rotary disk (4550) rotates in a clockwise or counterclockwise direction according to the operation of the rotary motor (4500).

[0065] The conversion link member (4600) is a means for converting the rotational motion of the rotating disk (4550) into the reciprocating linear motion of the operating link member (4200). Its lower portion (4610) is connected at an eccentric position from the center of the rotating disk (4550), and its upper portion (4630) is connected to the connecting link member (4400) so that its position in the connecting link member (4400) is fixed by a position fixing means such as a nut. At this time, the upper portion (4630) of the conversion link member (4600) is connected to the connecting link member (4400) located at the bottom among the plurality of connecting link members (4400).

[0066] Accordingly, when the rotational motor (4500) operates and the rotational disk (4550) rotates, the lower part (4610) of the conversion link member (4600) connected to the rotational disk (4550) rotates, and the upper part (4630) of the conversion link member (4600) connected to the connecting link member (4400) reciprocates in a linear motion, thereby converting the rotational motion of the rotational disk (4550) into a linear motion by the conversion link member (4600). Then, the linear motion converted by the conversion link member (4600) is transmitted to the operating link member (4200) and the supporting link member (4300) through the connecting link member (4400), and as a result, the operating link member (4200) reciprocates in a linear motion in the up and down direction together with the supporting link member (4300).

[0067] The rotating mechanism (4000) having the above configuration can stably and smoothly rotate and vibrate the nozzle assembly (3000) in the up and down direction while applying the rotational driving force of the rotating motor (4500), which has advantages in terms of control. However, in the present invention, the rotating mechanism is not limited to the configuration and operating mechanism disclosed in this embodiment, and can be implemented with various other configurations and operating mechanisms.

[0068] Hereinafter, a hose winder installed in a pesticide spraying device according to the present invention will be described in detail with reference to FIGS. 3 to 8.

[0069] FIG. 3 is a perspective view of a hose winder installed in a pesticide spraying device according to an embodiment of the present invention, FIG. 4 is a front view of the hose winder illustrated in FIG. 3, FIG. 5 is a top view of the hose winder illustrated in FIG. 3, FIG. 6 is a side view of the hose winder illustrated in FIG. 3, FIG. 7 is a side view for explaining the tension adjustment of the pulley belt in the hose winder of FIG. 1, and FIG. 8 is a cross-sectional view along line AA of FIG. 7. For reference, in the attached drawings, the Z-axis represents the up-down direction, the X-axis represents the left-right direction, and the Y-axis represents the front-back direction.

[0070] A hose winder (1) according to one embodiment of the present invention is installed on a movable trolley (1000), specifically installed in the upper area of ​​the trolley body (1100) between the trolley handle (1150) and the support frame (2100), and a hose (2) connecting the pesticide storage tank and the pesticide supply pipe (2200, see FIG. 2) to transfer pesticide from the pesticide storage tank to the pesticide spraying device is wound.

[0071] Referring to FIGS. 3 to 8, a hose winder (1) according to one embodiment of the present invention is for winding a long hose (2) into a coil by power and includes a frame (10), a drum (20), and a motor (30), and includes a driving pulley (40), a driven pulley (50), a pulley belt (60), etc. for power transmission so that the drum (20) can be rotated by the driving force of the motor (30).

[0072] In particular, in the present invention, the hose winder (1) solves the problem of the motor (30) not stopping operation and causing an overload on the motor (30) even though the hose (2) gets caught and can no longer be wound during the operation of winding the hose (2) by a mechanical mechanism rather than an electrical / electronic mechanism, and details regarding this will be described later in the description section regarding the pulley belt (60).

[0073] As shown in FIGS. 3 to 8, the hose winder (1) has a relatively large and heavy drum (20) placed on the lower part of the frame (10), a relatively light and small motor (30) placed on the upper part of the frame (10), a driven pulley (50) connected to the rotation axis (21) of the drum (20), and a driving pulley (40) connected to the rotation axis (31) of the motor (30), and it is preferable that the driving pulley (40) be arranged in a line along the vertical direction on the upper side of the driven pulley (50).

[0074] As shown in FIGS. 3 to 8, the frame (10) has a structure with an open front and rear side and may include a base (11) forming a bottom surface, left and right panels (12, 13) positioned above the base (11) and spaced apart from each other in the left and right directions, and a top plate (14) positioned across the upper side of the left and right panels (12, 13). However, the frame (10) is not necessarily formed as described above.

[0075] As shown in FIGS. 3 to 8, the drum (20) may include a drum body in the shape of a cylinder that is rotatably coupled to the drum's rotation axis (21) and has a hose (2) wound in a coil on its outer surface. This drum (20) is positioned within the gap between the upper side of the base (11) and the left / right panels (12, 13), and the drum's rotation axis (21) is positioned in the left-right direction so that it can be structurally stablely positioned and the hose (2) can be easily wound or unwound in the front-rear direction without obstruction.

[0076] Meanwhile, the drum (20) may further include a rim (22) positioned on one side of the drum body. The rim (22) of the drum is made of an annular plate with a diameter larger than the diameter of the drum body and is spaced apart from the driven pulley (50) in the left and right directions to support the hose (2) so that it can be stably wound onto the drum (20).

[0077] As shown in FIGS. 3 to 8, the motor (30) can be positioned on one side of the upper plate (11) of the frame (10) as a means of providing driving force to rotate the drum (20). The rotation axis (31) of the motor can be positioned long in the left-right direction, similar to the rotation axis (21) of the drum. Meanwhile, a control box (70) for supplying power to and controlling the motor (30) can be installed next to the motor (30), that is, on the other side of the upper plate (11) of the frame (10).

[0078] The drive pulley (40) can be rotatably coupled to the rotating shaft (31) of the motor as shown in FIGS. 3 to 8. A groove (41a) can be formed on the outer surface of the rim (41) of the drive pulley to allow the lower surface (62) of the pulley belt (60) to be stably seated. The drive pulley (40) can be formed with a smaller diameter than the driven pulley (50).

[0079] As shown in FIGS. 3 to 8, the driven pulley (50) is spaced apart from the rim (22) of the drum in the left and right directions on the other side of the drum body, thereby forming a space between it and the rim (22) of the drum so that the hose (2) can be stably wound in a coil. The driven pulley (50) can be made with a diameter larger than the diameter of the drum body, similar to the rim (22) of the drum, and preferably, it can be made with the same diameter as the rim (22) of the drum. In addition, a groove (not shown) can be formed on the outer surface of the rim (51) of the driven pulley to stably seat the lower surface of the pulley belt (60).

[0080] As shown in FIGS. 3 to 8, the pulley belt (60) is a means for connecting the driving pulley (40) and the driven pulley (50) to transmit power between the driving pulley (40) and the driven pulley (50) that are spaced apart from each other, so that the driving pulley (40) and the driven pulley (50) rotate in conjunction. It transmits power by frictional force between the driving pulley (40) and the driven pulley (50) while being wound around the rim (41) of the driving pulley (40) on one side and around the driven pulley (50) on the other side. At this time, in order to stably secure frictional force between the driving pulley (40) and the driven pulley (50), the cross-section between the upper surface (61) and the lower surface (62) of the pulley belt (60) may have an uneven pattern formed along the longitudinal direction as shown in FIGS. 3 and 6.

[0081] As explained above, in the present invention, the hose winder (1) solves the problem of the motor (30) not stopping operation and causing an overload on the motor (30) even though the hose (2) gets caught and can no longer be wound during the operation of winding the hose (2) by means of a mechanical mechanism rather than an electrical / electronic mechanism. Specifically, power transmission between the drive pulley (40) and the pulley belt (60) is achieved by frictional force, but when the hose (2) gets caught and can no longer be wound during the operation of winding the hose (2), slip occurs between the drive pulley (40) and the pulley belt (60), so that even if the motor (30) and the drive pulley (40) continue to operate (rotate), the pulley belt (60) stops operating and does not rotate any further. That is, in the hose winder (1) according to the present invention, when the hose (2) gets caught and can no longer be wound while winding the hose (2), the motor (30) and the drive pulley (40) will idle with respect to the pulley belt (60).

[0082] To this end, the width (60W) of the pulley belt (60) is formed to be smaller or smaller than the width of the rim (41) of the drive pulley (40) on which the pulley belt (60) is run, as shown in FIGS. 4 and 5, and the lower surface (62) of the pulley belt (60) contacts the rim (41) of the drive pulley (40), and both sides of the pulley belt (60) are spaced apart from the rim (41) of the drive pulley (40) so as not to contact the rim (41) of the drive pulley (40). Accordingly, when the hose winder (1) is winding the hose (2), if the hose (2) gets caught and can no longer be wound, that is, if the pulley belt (60) is pulled taut with a force greater than a certain amount, slip or sliding occurs between the pulley belt (60) and the drive pulley (40), and as a result, the power transmission from the drive pulley (40) to the pulley belt (60) is interrupted, causing the operation of the pulley belt (60) to stop and the drive pulley (40) to idle, thereby preventing the motor (30) from being overloaded. In addition, the rotation of the driven pulley (50) and the drum (20) also stops, so there is no risk of the caught hose (2) being pulled excessively, thus preventing damage or breakage of the hose (2).

[0083] Meanwhile, the width (50w) of the rim (51) of the driven pulley is preferably formed to be substantially the same size as the width (60W) of the pulley belt (60) so that slip does not occur between the driven pulley (50) and the pulley belt (60) and the pulley belt can rotate firmly and stably. However, unlike this, the width (50w) of the rim (51) of the driven pulley may be formed to be larger or larger than the width (60W) of the pulley belt (60), similar to the driving pulley (40).

[0084] Referring to FIGS. 3 to 8, a hose winder (1) according to one embodiment of the present invention further includes a displacement control unit (100).

[0085] The displacement control unit (100) is movably positioned on the frame (10) to support the motor (30) and the drive pulley (40) and to adjust the tension of the pulley belt (60). That is, the displacement control unit (100) is configured to adjust the relative position of the drive pulley (40) with respect to the fixed driven pulley (50) along the separation direction between the drive pulley (40) and the driven pulley (50), i.e., the up and down direction.

[0086] Specifically, the frame (10) further includes a displacement control support plate (16) that supports the displacement control unit (100), and the displacement control unit (100) may include a motor support plate (110) and a displacement control pin (120).

[0087] The displacement control support plate (16) may be placed on the upper side of the top plate (14) of the frame (10). Specifically, the displacement control support plate (16) may include a bulkhead portion (17) and a first displacement control pin support portion (18).

[0088] The partition section (17) is made of a flat plate and can be positioned between the motor (30) and the drive pulley (40) in the left and right directions. An axis hole (17b) is formed in the partition section (17) so that the rotational shaft (31) of the motor can pass through in the left and right directions, and can be extended in a straight line along the displacement adjustment direction, i.e., the vertical direction, so that the position of the motor (30) can be changed along the displacement adjustment direction, i.e., the vertical direction, so that the rotational shaft (31) of the motor can be extended in the same direction.

[0089] The first displacement adjustment pin support (18) may be formed in the shape of a flat plate that is vertically bent toward the motor (30) in the left-right direction from the upper end of the bulkhead (17). A first displacement adjustment pin coupling hole (18a) may be formed in the first displacement adjustment pin support (18) so that the displacement adjustment pin (120) can penetrate and be coupled in the up-down direction, which is the displacement adjustment direction. The first displacement adjustment pin coupling hole (18a) may be located in the center position in the front-rear direction. As described later, screw threads may be formed on the inner surface of the first displacement adjustment pin coupling hole (18a) to enable screw fastening with the displacement adjustment pin (120).

[0090] Meanwhile, the displacement control support plate (16) may further include a pair of side panels (19) that are each bent vertically toward the motor (30) side from the front and rear ends of the bulkhead (17).

[0091] The motor support plate (110) may include a motor coupling part (112) to which the motor (30) is coupled and fixed, and a second displacement adjustment pin support part (114) to which the displacement adjustment pin (120) is coupled.

[0092] The motor coupling portion (112) may be formed in the shape of a flat plate. The motor coupling portion (112) is positioned between the motor (30) and the drive pulley (40) and may be moved along the vertical direction, which is the displacement adjustment direction, while in contact with the partition portion (17) of the displacement adjustment support plate (16). It is preferable that the motor coupling portion (112) be formed with a length shorter than the partition portion (17) of the displacement adjustment support plate (16) in the vertical direction. An axis hole (112a) through which the rotation shaft (31) of the motor can rotatably pass may be formed on one side of the motor coupling portion (112).

[0093] The second displacement adjustment pin support (114) may be formed in the shape of a flat plate. Preferably, the second displacement adjustment pin support (114) may be positioned lower than the first displacement adjustment pin support (18) in the vertical direction so as not to interfere with the displacement adjustment support plate (16). A second displacement adjustment pin coupling hole (114a) to which a displacement adjustment pin (120) is coupled may be formed in the second displacement adjustment pin support (114). To facilitate displacement adjustment in the vertical direction, it is preferable that the second displacement adjustment pin coupling hole (114a) be arranged in a vertical line with the first displacement adjustment pin coupling hole (18a).

[0094] The displacement adjustment pin (120) is coupled to the displacement adjustment support plate (16) of one side of the frame (10) and coupled to the other side of the motor support plate (110) to guide the movement of the motor support plate (110) in the displacement adjustment direction, that is, in the up and down direction. This displacement adjustment pin (120) may be formed in the form of a bolt so that precise displacement adjustment in the up and down direction is easy when coupled with the motor support plate (110). That is, the displacement adjustment pin (120) may include a head (122) that spans over the upper side of the first displacement adjustment pin support part (18), and a body (126) that extends in the up and down direction from the head (122) and penetrates the first displacement adjustment pin coupling hole (18a) and the second displacement adjustment pin coupling hole (114a), and has screw threads (124) formed therein to enable screw fastening. Accordingly, when the motor support plate (110) is coupled to the displacement control support plate (16) by the displacement control pin (120), if a wrench is inserted into the head (122) of the displacement control pin (120) and the displacement control pin (120) is rotated, the motor support plate (110) moves in the up-and-down direction, that is, in the displacement control direction, by the amount the displacement control pin (120) is rotated, and accordingly, the position of the driving pulley (40) relative to the driven pulley (50) is adjusted in the up-and-down direction, and the tension of the pulley belt (60) can be adjusted. That is, when the position of the driving pulley (40) moves relatively upward, the distance between the driving pulley (40) and the driven pulley (50) becomes relatively farther, thereby increasing the tension of the pulley belt (60). When the position of the drive pulley (40) is moved relatively downward, the distance between the drive pulley (40) and the driven pulley (50) becomes relatively closer, and the tension of the pulley belt (60) decreases.

[0095] Furthermore, the displacement control unit (100) may further include a fastening member (130). The fastening member (130) fixes the position of the motor support plate (110) to the displacement control support plate (16) of the frame (10) when the tension of the pulley belt (60) is adjusted by the displacement control pin (120) as described above. As shown in the attached drawing, it may be made of a bolt and a nut, but is not necessarily limited to a bolt and a nut. The fastening member (130) may be made of multiple parts so that the motor support plate (110) can be fixed in a stable and solid position.

[0096] It is preferable that the fastening member (130) fixes the motor support plate (110) to the displacement control support plate (16) of the frame (10) in a left-right direction orthogonal to the up-down direction, which is the displacement control direction. That is, a plurality of fastening holes (112b) may be formed in the motor coupling part (112) of the motor support plate (110), which penetrate in the left-right direction and have a diameter size corresponding to the fastening member (130), so that each of the plurality of fastening members (130) is fastened. Additionally, a plurality of slits (17a) may be formed in the bulkhead part (17) of the displacement control support plate (16), which correspond to the fastening holes (112b) of the motor support plate (110) in the left-right direction and extend along the displacement control direction, i.e., the up-down direction, so that each of the plurality of fastening members (130) is fastened.

[0097] By means of the displacement control unit (100) having the above configuration, the hose winder (1) can adjust the displacement of the motor (30) and the drive pulley (40) relative to the driven pulley (50) to set the pulley belt (60) to a predetermined tension. Therefore, when the hose (2) is not caught during the operation of winding the hose (2), if a problem occurs where the hose winder (1) does not operate normally due to slipping caused by weak friction between the pulley belt (60) and the drive pulley (40), the operator at the site can directly solve the problem by appropriately adjusting the tension of the pulley belt (60) through easy and simple operation.

[0098] Referring to FIGS. 3 to 8, a hose winder (1) according to one embodiment of the present invention further includes a hose guide (200) that guides the position where a hose (2) is wound on a drum body in the left and right directions.

[0099] The hose guide (200) may include a guide rail (210) that is arranged lengthwise in the left-right direction between the left / right panels (12, 14) of the frame (10), and a slider (220) that is arranged to be movable in the left-right direction on the guide rail (210) and through which the hose (2) passes in the front-rear direction.

[0100] Additionally, the hose guide (200) may further include a bidirectional screw (230), a driving sprocket (240), a driven sprocket (250), and a chain (260) so that the slider (220) can move automatically in the left and right directions in conjunction with the drum (20).

[0101] The bidirectional screw (230) is positioned lengthwise in the left-right direction between the left and right panels (12, 13) of the frame (10), is positioned to be rotatable with the left-right direction as an axis, and can be engaged with the slider (220). Accordingly, when the bidirectional screw (230) rotates, the slider (220) is engaged with the bidirectional screw (230) and is connected to the guide rail (210), so that it can reciprocate along the bidirectional screw (230) in the left-right direction while its rotation with respect to the left-right direction as an axis is restricted.

[0102] The drive sprocket (240) is coupled to the rotation axis (21) of the drum so that it can rotate integrally with the drum (20), and the driven sprocket (250) is coupled to the bidirectional screw (230) so that it can rotate integrally with the bidirectional screw (230), and a chain (260) connects the drive sprocket (240) and the driven sprocket (250) so that they can rotate integrally. Accordingly, when the drum (20) is rotated by the power of the motor (30), the bidirectional screw (230) also rotates in conjunction with it, and since the slider (220) reciprocates in the left and right directions, the hose (2) can be wound uniformly in the left and right directions on the drum (20).

[0103] Referring to FIGS. 3 to 8, a hose winder (1) according to one embodiment of the present invention further includes a tensioner (300) for maintaining a constant tension of a pulley belt (60) set to a predetermined tension by a displacement control unit (100) and further for adjusting the tension of the pulley belt (60) more precisely.

[0104] As shown in FIGS. 5 and 6, the tensioner (300) may include a roller (3100) positioned to contact the upper surface (61) of the pulley belt (60), a lever (3200) having one side coupled to the frame (10) and rotatably supporting the roller (3100), a support rod (330) provided on the frame (10), and a spring (340) connecting the other side of the lever (3200) to the support rod (330). At this time, the tensioner (300) may be positioned in the front-rear direction opposite to the hose guide (200) with respect to the motor (30).

[0105] The roller (3100) is a means of applying tension of the tensioner (300) to the pulley belt (60) by contacting the pulley belt (60), and can be rotatably coupled to the lower part of the lever (3200) so as not to interfere with the rotation of the pulley belt (60). At this time, the tension of the tensioner (300) is provided by the elastic force of the spring (340) connecting the lever (3200) and the support rod (330).

[0106] As shown in FIG. 6, the lever (3200) is provided with a middle portion bent to form an overall boomerang-like shape and may include a first lever member (321) coupled to the frame (10) and a second lever member (322) coupled to the spring (340). One end of the first lever member (321) is rotatably coupled to the displacement adjustment support plate (16) of the frame (10) by means of a bolt (321a), etc. And, the second lever member (322) may have at least one locking portion (322a) formed therein to which one side (upper side) of the spring (340) is caught.

[0107] Here, it is preferable that the catch portion (322a) be provided as a plurality of catch portions (322a) spaced apart at a predetermined interval along the longitudinal direction of the second lever member (322), so that the operator can select and catch one side of the spring (340) on any one of the plurality of catch portions (322a) to adjust the magnitude of the elastic force provided by the spring (340). That is, the position where one side of the spring (340) is caught on the second lever member (322) by the plurality of catch portions (322a) changes, and as a result, the magnitude of the elastic force provided by the spring (340) changes. Accordingly, the hose winder (1) according to one embodiment of the present invention can first adjust and set the tension of the pulley belt (60) through the displacement adjustment portion (100), and then secondarily adjust the tension of the pulley belt (60) more precisely through the tensioner (300). Meanwhile, although the multiple catch portions (322a) in FIG. 6 are provided with a structure of three through holes, the present invention is not limited thereto and can be provided with any of various other structures as long as one side of the spring (340) can be caught, and the number thereof can also be appropriately changed.

[0108] As shown in FIGS. 5 and 6, the support rod (330) can be arranged lengthwise in the left-right direction between the left and right panels (12, 13) of the frame (10). Also, the spring (340) can be provided as a coil-shaped spring as shown in FIGS. 6, and one end (upper end) formed in a ring shape can be hooked onto the second lever member (322) of the lever (3200), and the other end (lower end) formed in a ring shape can be hooked onto the support rod (330).

[0109] Although the present invention has been described in detail through preferred embodiments, it is obvious to those skilled in the art that the present invention is not limited to the aforementioned preferred embodiments and can be modified and varied in various ways without departing from the spirit and scope of the invention. Accordingly, such modifications or variations should be deemed to fall within the scope of the claims of the present invention.

[0110] The present invention can be widely used in the manufacturing field, such as devices for spraying pesticides on various types of crops.

Claims

1. Mobile trolley; A nozzle assembly installed on the above-mentioned movable cart and spraying pesticide toward crops; A pesticide supply pipe connected to the nozzle assembly to supply pesticide to the nozzle assembly; and A hose winder installed on the above-mentioned mobile cart, on which a hose for transporting pesticide from a pesticide storage tank is wound. Includes, A pesticide spraying device comprising a hose winder characterized by the nozzle assembly spraying pesticide while rotating and vibrating within a preset range of rotation angles.

2. In Paragraph 1, The above pesticide spraying device A rotating mechanism installed on the above-mentioned movable carriage and which rotates and vibrates the nozzle assembly in the up and down direction within a preset rotation angle range. Includes more, The above nozzle assembly A rotating body part that rotates and vibrates in the vertical direction by the above-mentioned rotating mechanism; and A spray nozzle part provided as a pair on the left and right with the aforementioned rotating body part in between, connected to the aforementioned rotating body part, and rotating and vibrating in the up and down direction together with the aforementioned rotating body part to spray pesticide supplied through the pesticide supply pipe toward the crops. A pesticide spraying device comprising a hose winder characterized by including 3. In Paragraph 2, The above-mentioned rotating mechanism rotary motor; A rotating disk coupled to the rotation axis of the above-mentioned rotary motor and rotating according to the operation of the above-mentioned rotary motor; An operating link member arranged to extend vertically and configured to perform reciprocating linear motion in the vertical direction; A conversion link member having a lower portion connected at an eccentric position from the center of the rotating disk and converting the rotational motion of the rotating disk into the reciprocating linear motion of the operating link member; and A rotating plate having one end fixedly coupled to the rotating body part of the nozzle assembly and the other end coupled to the operating link member, which rotates and vibrates in the vertical direction as the operating link member performs reciprocating linear motion in the vertical direction. A pesticide spraying device comprising a hose winder characterized by including 4. In Paragraph 3, The above-mentioned rotating mechanism A support link member arranged to be extended vertically in parallel with the operating link member while spaced apart from the operating link member; and A connecting link member that connects the operating link member and the supporting link member to each other, and connects the upper end of the converting link member so that the operating link member and the supporting link member form an integrated structure to enable reciprocating linear motion in the up-and-down direction. A pesticide spraying device comprising a hose winder characterized by further including 5. In Paragraph 2, The above nozzle assembly A bolt member for supplying pesticides, positioned to penetrate the aforementioned rotating body, with its rear end fixedly coupled to the pesticide supply pipe, and having an internal flow path formed therein to deliver pesticides supplied through the pesticide supply pipe to the spray nozzle. A pesticide spraying device comprising a hose winder characterized by further including 6. In Paragraph 1, The above hose winder Frame; A drum rotatably disposed on one side of the above frame and on which the hose is wound; A motor that provides driving force for rotating the above drum; A drive pulley coupled to the rotating shaft of the above motor; A driven pulley coupled to the rotation axis of the drum; and A pulley belt connecting the driving pulley and the driven pulley for power transmission between the driving pulley and the driven pulley. A pesticide spraying device comprising a hose winder characterized by including 7. In Paragraph 6, The above hose winder A pesticide spraying device comprising a hose winder characterized by the fact that when the hose gets caught and can no longer be wound while winding the hose, slip occurs between the drive pulley and the pulley belt, causing the drive pulley to idle.

8. In Paragraph 7, The above hose winder A displacement adjustment unit that supports the motor and the drive pulley and is movably disposed on the frame to adjust the tension of the pulley belt. A pesticide spraying device comprising a hose winder characterized by further including 9. In Paragraph 8, The above displacement control unit A motor support plate to which the above motor is coupled; and A displacement control pin, one side of which is coupled to the frame and the other side of which is coupled to the motor support plate to guide the movement of the motor support plate. A pesticide spraying device comprising a hose winder characterized by including 10. In Paragraph 9, A pesticide spraying device including a hose winder, characterized in that the displacement adjustment pin is formed in the shape of a bolt with one side rotatably fitted into the frame and the other side having a screw thread to which the motor support plate is screw-fastened.

11. In Paragraph 10, The above displacement adjustment unit further includes a plurality of fastening members that fix the motor support plate to the frame when the tension of the pulley belt is adjusted, A pesticide spraying device comprising a hose winder, characterized in that each of the plurality of fastening members is fastened to the frame, and a plurality of slits are formed extending along the direction of movement of the displacement adjustment part.

12. In Paragraph 9, The above driving pulley is positioned above the above driven pulley, and A pesticide spraying device including a hose winder characterized in that the above displacement adjustment pin guides the movement of the above motor support plate in the up and down direction.

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