Agrochemical spraying equipment including moving cart

Abstract

Disclosed is agrochemical spraying equipment including a moving cart. The agrochemical spraying equipment according to the present invention comprises: a moving cart which can easily rotate in the left / right direction when moving on the ground; a nozzle assembly installed on the moving cart so as to spray agrochemicals toward crops; and an agrochemical supply pipe connected to the nozzle assembly to supply agrochemicals to the nozzle assembly, wherein the nozzle assembly sprays agrochemicals while rotating / vibrating within a preset rotation angle range.

Description

Pesticide spraying device including a mobile cart

[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 moving cart for moving the pesticide spraying device along a rail installed on the ground or on the ground.

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

[0003] However, conventional pesticide spraying devices equipped with nozzle assemblies with a fixed spraying direction of pesticides have limitations in effectively spraying pesticides to various types of crops, and even for the same crop, they have problems in that they cannot spray pesticides evenly and efficiently, especially not evenly to the underside of the leaves of the crops.

[0004] Meanwhile, in terms of recent agricultural automation, many pesticide spraying devices are being applied using mobile carts that can move and be controlled along rails installed on the ground. These mobile carts are composed of rail wheels that rotate in contact with the rails when moving along the rails installed on the ground, and ground wheels that rotate in contact with the ground when moved by workers on the ground.

[0005] However, in the conventional pesticide spraying device's mobile cart, the rail wheels and the ground wheels are provided in a structure that is coupled to rotate integrally with a drive shaft extending in the left-right direction of the mobile cart. Accordingly, when the mobile cart is moved on the ground by a worker, the rotation of the ground wheels in contact with the ground is restricted by the load of the rail wheels or the drive shaft, which have a considerable weight, so that the left-right direction of the mobile cart is not easy, and there is a problem that causes inconvenience to the worker in the process of moving the mobile cart on the ground.

[0006] Related prior art documents include Republic of Korea Utility Model Publication No. 20-2017-0002991 (Title of invention: Sprayer for pesticide spraying, Publication date: August 25, 2017), Republic of Korea Patent Publication No. 10-2015-0052993 (Title of invention: Automatic pesticide spraying system using agricultural power transporter, Publication date: May 15, 2015), and Republic of Korea Patent Registration No. 10-2060883 (Title of invention: Pesticide spraying cart, Publication date: December 30, 2019).

[0007] The purpose of the present invention is to provide a pesticide spraying device having a spraying mechanism that can efficiently and evenly spray pesticides on various types of crops to maximize the effectiveness of pesticide spraying.

[0008] Another object of the present invention is to provide a pesticide spraying device having a mechanism of a moving cart that enables smooth and stable movement along a rail installed on the ground while easily turning left and right when moving on the ground.

[0009] The present invention provides a pesticide spraying device comprising a mobile cart, a nozzle assembly installed on the mobile cart and spraying pesticide toward crops, and a pesticide supply pipe connected to the nozzle assembly to supply pesticide to the nozzle assembly, wherein the nozzle assembly is characterized in that it sprays the pesticide while rotating and vibrating within a preset rotation angle range.

[0010] Preferably, the pesticide spraying device further includes a rotating mechanism that is installed on the mobile cart and rotates and vibrates the nozzle assembly in the up-and-down direction within a preset rotation angle range, and the nozzle assembly may include a rotating body that rotates and vibrates in the up-and-down direction by the rotating mechanism, and a spray nozzle that is provided as a pair on the left and right with the rotating body in between and is connected to the rotating body and rotates and vibrates in the up-and-down direction together with the rotating body while spraying the pesticide supplied through the pesticide supply pipe toward the crop.

[0011] Preferably, the rotating mechanism may include a rotating motor, a rotating disk coupled to a rotational axis of the rotating motor and rotating according to the operation of the rotating motor, an operating link member arranged to extend vertically and configured to perform a reciprocating linear motion in the vertical direction, a conversion link member connected at a lower end at an eccentric position from the center of the rotating disk and converting the rotational motion of the rotating disk into a reciprocating linear motion of the operating link member, and a rotary plate having one end fixedly coupled to the rotating body of the nozzle assembly and the other end coupled to the operating link member, and performing a rotational vibration in the vertical direction as the operating link member performs a reciprocating linear motion in the vertical direction.

[0012] Preferably, the rotating mechanism may further include a support link member that is arranged to extend vertically in parallel with the operating link member while being 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 conversion link member so that the operating link member and the supporting link member perform a reciprocating linear motion in the vertical direction as an integrated structure.

[0013] Preferably, the nozzle assembly may further include a bolt member for supplying pesticides, the rear end of which is fixedly connected to the pesticide supply pipe while being positioned so as to penetrate the rotating body portion, and having an internal path formed therein for delivering the pesticides supplied through the pesticide supply pipe to the spray nozzle portion.

[0014] Preferably, the moving cart may include front rail wheels which are respectively provided on both sides of a first drive shaft extending left and right from the front side of the moving cart and which come into contact with the rail and rotate integrally with the first drive shaft when the moving cart moves along a rail installed on the ground, rear rail wheels which are respectively provided on both sides of a second drive shaft extending left and right from the rear side of the moving cart and which come into contact with the rail and rotate integrally with the second drive shaft when the moving cart moves along the rail, front ground wheels which are respectively provided on both sides of the first drive shaft and which come into contact with the ground and rotate when the moving cart moves on the ground, and rear ground wheels which are respectively provided on both left and right sides of the moving cart at the rear side of the moving cart and which come into contact with the ground and rotate when the moving cart moves on the ground.

[0015] Preferably, the front ground wheel may be provided so as to be rotatable relative to the front rail wheel without rotating integrally with the front rail wheel.

[0016] Preferably, the rear ground wheels are provided on each side of a wheel support extending left and right from the rear side of the mobile cart, and can be coupled to the wheel support so as to be capable of rotating left and right.

[0017] Preferably, the front rail wheel includes an outer connecting shaft extending outwardly along the longitudinal direction of the first drive shaft in its central region, and the front ground wheel has a connecting shaft insertion hole formed through the central region into which the outer connecting shaft is inserted, and the front ground wheel can be coupled to the front rail wheel by a rotational fastening mechanism so as to be rotatable about the outer connecting shaft while not being separated from the outer connecting shaft in a state in which the outer connecting shaft is inserted through the connecting shaft insertion hole.

[0018] Preferably, the moving cart may further include a front rail guide provided on each side of the first driving shaft so that the front rail wheel does not come off the rail when the moving cart moves along the rail, and a rear rail guide provided on each side of the second driving shaft so that the rear rail wheel does not come off the rail when the moving cart moves along the rail.

[0019] Preferably, the front rail guide is arranged between the front ground wheel and the front rail wheel, but may be provided to rotate relative to the front rail wheel without rotating integrally with the front rail wheel.

[0020] Preferably, the front rail guide is disposed between the front ground wheel and the front rail wheel, and is provided in a disk shape and includes an outer periphery inclined surface whose outer diameter gradually decreases as it goes from the front ground wheel to the front rail wheel, and the rear rail guide is provided in a disk shape and may include an outer periphery inclined surface whose outer diameter gradually decreases as it goes toward the rear rail wheel.

[0021] Preferably, the rear rail guide may be provided so as to be rotatable relative to the rear rail wheel without being rotatable integrally with the rear rail wheel.

[0022] According to one embodiment of the present invention, since the nozzle assembly for spraying pesticides toward crops is applied in an 'up-and-down shaking' manner in which it rotates and vibrates up and down within a preset rotation angle range, the pesticides are efficiently and evenly sprayed to the underside of the leaves of various types of crops, thereby maximizing the effect of pesticide spraying.

[0023] In addition, according to one embodiment of the present invention, while the mobile cart can move smoothly and stably along a rail installed on the ground, when the mobile cart is moved on the ground by a worker, the rotation of the front ground wheel is not restricted by the load of the front rail wheel or the drive shaft having a considerable weight, so that the convenience of the worker is improved in the process of the worker moving the mobile cart on the ground.

[0024] Figure 1 is a perspective view of a pesticide spraying device according to one embodiment of the present invention.

[0025] Figure 2 is a perspective view for explaining the pesticide supply pipe, nozzle assembly, and rotating mechanism of the pesticide spraying device of Figure 1.

[0026] FIG. 3 is a perspective view showing the front rail wheel, front rail guide, and front ground wheel arranged on the rail in the pesticide spraying device of FIG. 1.

[0027] Fig. 4 is an exploded perspective view for explaining the joint structure of the front rail wheel, front rail guide, and front ground wheel in the pesticide spraying device of Fig. 1.

[0028] In order to fully understand the present invention, its operational advantages, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

[0029] Hereinafter, the present invention will be described in detail by describing preferred embodiments thereof with reference to the attached drawings. However, in explaining the present invention, descriptions of previously known functions or configurations will be omitted to clarify the gist of the present invention.

[0030] 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 in the pesticide spraying device of FIG. 1.

[0031] 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 cart (100), a support frame (210), a pesticide supply pipe (220), a nozzle assembly (300), and a rotating mechanism (400).

[0032] A mobile cart (100) 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 automatically operates according to a preset control process, and when moving on the ground to move to another location, it can be manually operated by a worker. In addition, the mobile cart (100) 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 a power means. Alternatively, the mobile cart (100) may be provided in a manner in which it moves by the manpower of a worker without a separate power means.

[0033] The moving cart (100) includes a cart body (110), a cart handle (115), a front rail wheel (121), a front rail guide (122), a front ground wheel (123), a rear rail wheel (131), a rear rail guide (132), and a rear ground wheel (141), as illustrated in FIG. 1. The detailed configuration of the moving cart (100) will be described later. For reference, in this specification, 'forward' means the forward travel direction of the moving cart (100), and 'rear' means the reverse travel direction of the moving cart (100).

[0034] The support frame (210) is a means for supporting the pesticide supply pipe (220) and the nozzle assembly (300) while providing an installation space for the rotating mechanism (400), and is provided in a vertical direction on the front side of the mobile cart (100) on the cart body (110) of the mobile cart (100) as shown in FIG. 1.

[0035] The pesticide supply pipe (220) is a means for supplying pesticide transferred from a pesticide storage tank (not shown) to the nozzle assembly (300), and is provided as a pipe extending vertically from the rear side of a plurality of nozzle assemblies (300) as shown in FIGS. 1 and 2, and is fixedly connected to one side of the support frame (210). In order to supply pesticide to the plurality of nozzle assemblies (300), the pesticide supply pipe (220) is formed with a plurality of branch pipes (221) connected to the nozzle assemblies (300) at regular intervals in the longitudinal direction of the pesticide supply pipe (220), as shown in FIG. 2. Accordingly, the plurality of nozzle assemblies (300) can be installed by connecting to the pesticide supply pipe (220) at regular intervals in the longitudinal direction of the pesticide supply pipe (220), i.e., in the vertical direction, through the plurality of branch pipes (221).

[0036] Meanwhile, the pesticide supply pipe (220) is connected to the pesticide storage tank through a pesticide hose (not shown) so that pesticide can be delivered from the pesticide storage tank. For reference, the pesticide storage tank can be installed together with a pesticide pump (not shown) at a predetermined location separate from the pesticide spraying device, or alternatively, it can be installed together with the pesticide pump on the cart body (110) of the mobile cart (100).

[0037] The nozzle assembly (300) is a means for spraying pesticide supplied through a pesticide supply pipe (220) toward crops. In order to spray pesticide efficiently and widely on crops when the pesticide spraying device moves between crops, a plurality of nozzles (five in the present embodiment) are installed at regular intervals in the longitudinal direction, i.e., the vertical direction, of the pesticide supply pipe (220) fixedly connected to the support frame (210) as shown in FIGS. 1 and 2.

[0038] Preferably, the nozzle assembly (300) is provided as a rocking nozzle assembly that rotates and vibrates (or reciprocates) in one direction and the other within a preset rotation angle range, in order to efficiently and evenly spray pesticides on crops and maximize the effect of pesticide spraying. In the present embodiment, the nozzle assembly (300) is provided as a vertical rocking nozzle assembly that rotates and vibrates up and down with respect to the horizontal axis (or transverse axis) within a preset rotation angle range by a rotating mechanism (400), as illustrated in FIG. 2, so that pesticides are evenly sprayed to the underside of the leaves of the crops. However, unlike the present embodiment, the nozzle assembly may be provided as a back-and-forth rocking nozzle assembly that rotates and vibrates back and forth with respect to the vertical axis (or longitudinal axis) within a preset rotation angle range depending on the type and characteristics of the target crop.

[0039] Specifically, the nozzle assembly (300) includes a rotating body part (310), a spray nozzle part (320), and a bolt member (330) for supplying pesticide, as illustrated in FIG. 2.

[0040] The rotating body part (310) is a part that rotates and vibrates in the up-and-down direction within a preset rotation angle range by the rotating mechanism part (400), and as shown in FIG. 2, is fixedly connected to the rotating plate (410) of the rotating mechanism part (400) and includes a rotating block (311) through which a pesticide supply bolt member (330) passes, and a pair of nozzle connecting pipes (313) provided on both left and right sides of the rotating block (311) to connect the spray nozzle part (320).

[0041] The spray nozzle unit (320) sprays pesticides supplied through the pesticide supply pipe (220), the pesticide supply bolt member (330), and the nozzle connection pipe (313) of the rotating body unit (310) toward crops. The spray nozzle units (320) are provided as a pair on the left and right with the rotating body unit (310) in between. A pair of spray nozzle units (320) is respectively connected to a pair of nozzle connection pipes (313) of the rotating body unit (310), and while rotating and vibrating in the up and down direction together with the rotating body unit (310) that rotates and vibrates up and down within a preset rotation angle range by the rotating mechanism unit (400), the pesticides supplied through the pesticide supply pipe (220) are sprayed toward crops.

[0042] The spray nozzle unit (320) includes a spray nozzle (321), a rotation operation unit (322), an angle adjustment unit (323), and a rotation body connection tube (325) as illustrated in FIG. 2. Here, the spray nozzle (321) sprays pesticide through a spray hole (321a), the rotation operation unit (322) rotates the nozzle port of the spray nozzle (321) to change the position of the spray hole (321a) of the spray nozzle (321), the angle adjustment unit (323) adjusts the spraying direction or spraying angle of the spray nozzle (321), and the rotation body connection tube (325) screw-fastens the spray nozzle unit (320) to the nozzle connection tube (313) of the rotation body unit (310). At this time, it is preferable to place the spray nozzle (320) so that the spray nozzle (321) is inclined upwards through the angle adjustment part (323) so that the pesticide is evenly sprayed to the lower surface of the crop leaves. However, the spray nozzle (320) disclosed in this embodiment is merely exemplary, and the spray nozzle applied to the present invention can be implemented with various other configurations and operating mechanisms, and the number of spray nozzles can also be appropriately changed.

[0043] The pesticide supply bolt member (330) is a means for connecting the nozzle assembly (300) to the pesticide supply pipe (220), and at the same time, is a means for providing a path for delivering the pesticide supplied through the pesticide supply pipe (220) to the spray nozzle unit (320). As illustrated in FIG. 2, the pesticide supply bolt member (330) is positioned so as to penetrate the rotary block (311) of the rotary body unit (310) in the front-back direction, and its rear end is exposed to the rear of the rotary block (311) and is fixedly connected to the branch pipe (221) of the pesticide supply pipe (220) by a screw fastening method, and an internal path through which the pesticide supplied through the pesticide supply pipe (220) moves is formed in the longitudinal direction of the pesticide supply bolt member (330). In addition, the bolt member (330) for supplying pesticides has a pair of through holes (not shown) formed on the left and right in a direction intersecting with the internal flow path of the bolt member (330) for supplying pesticides in a peripheral area overlapping with the flow path of the nozzle connection pipe (313) within the rotating block (311).

[0044] Accordingly, the nozzle assembly (300) is rotatable relative to the pesticide supply pipe (220) with the pesticide supply bolt member (330) fixedly connected to the pesticide supply pipe (220) as an axis, and the pesticide supplied through the pesticide supply pipe (220) moves along the internal path of the pesticide supply bolt member (330) and moves along the nozzle connection pipe (313) of the rotating body part (310) through the through hole of the pesticide supply bolt member (330) to be stably delivered to the spray nozzle (321) of the spray nozzle part (320) without leakage.

[0045] The rotating mechanism (400) is a means for operating the nozzle assembly (300) in an up-and-down swing manner, that is, for rotating and vibrating (or reciprocatingly rotating) the nozzle assembly (300) in an up-and-down direction within a preset rotation angle range, and includes a rotating plate (410), an operating link member (420), a support link member (430), a connecting link member (440), a rotation motor (450), a rotation disk (455), and a conversion link member (460) as shown in FIGS. 1 and 2.

[0046] The rotary plate (410) is fixedly connected at one end to the rotary body (310) of the nozzle assembly (300) by welding or the like at the rear side of the nozzle assembly (300), and the other end is connected to the operating link member (420) by a fastening means such as a bolt / nut. A plurality of rotary plates (410) are provided, one for each of the plurality of nozzle assemblies (300).

[0047] The operating link member (420) is arranged to extend vertically between the rear side of the nozzle assembly (300) and the front side of the support frame (210). The operating link member (420) is arranged to perform a reciprocating linear motion in the vertical direction when the other ends of the rotating plates (410) are coupled.

[0048] Accordingly, as the operating link member (420) performs a reciprocating linear motion in the up-and-down direction, the rotation plates (410) rotate and vibrate in the up-and-down direction, and as a result, the rotation body part (310) of the nozzle assembly (300) fixedly connected to the rotation plate (410) rotates and vibrates in the up-and-down direction within a preset rotation angle range.

[0049] The support link member (430) is a means for supporting the operating link member (420) so that the reciprocating linear motion of the operating link member (420) can proceed stably and smoothly. It is arranged to extend vertically in parallel with the operating link member (420) while being spaced apart from the operating link member (420) in the front-rear direction at the rear side of the support frame (210). The support link member (430) is arranged to perform a reciprocating linear motion in the vertical direction together with the operating link member (420) while being coupled to the support frame (210) through a plurality of second rotation plates (435) provided at a constant interval in the longitudinal direction. Meanwhile, the support link member (430) may be formed to have a length smaller than that of the operating link member (420).

[0050] The connecting link member (440) is a means for connecting the operating link member (420) and the supporting link member (430) to each other, and the operating link member (420) and the supporting link member (430) are provided with an integrated structure to perform a reciprocating linear movement in the up-and-down direction by means of the connecting link member (440). The connecting link member (440) is arranged to extend long in the front-back direction between the operating link member (420) and the supporting link member (430), and its front end is connected to the operating link member (420) by means of a fastening means such as a bolt / nut, and its rear end is connected to the supporting link member (430) by means of a fastening means such as a bolt / nut. Meanwhile, a plurality of connecting link members (440) (three in the present embodiment) are provided at regular intervals in the longitudinal direction of the operating link member (420) and the supporting link member (430) to ensure a firm connection between the operating link member (420) and the supporting link member (430).

[0051] The rotation motor (450) is a means for providing a driving force to rotate and vibrate the nozzle assembly (300) in the up-and-down direction, and is installed in the support frame (210) and provided with an electric motor, a hydraulic motor, or the like. The rotation motor (450) is arranged so that its rotation axis (451) is exposed to the outside of the support frame (210) while being accommodated in an internal space formed at the lower part of the support frame (210). In addition, the rotation disk (455) is arranged on the left (or right) side of the support frame (210) so that its center is coupled with the rotation axis (451) of the rotation motor (450). Accordingly, the rotation disk (455) rotates clockwise or counterclockwise depending on the operation of the rotation motor (450).

[0052] The conversion link member (460) is a means for converting the rotational motion of the rotating disk (455) into the reciprocating linear motion of the operating link member (420). The lower end (461) of the conversion link member (460) is connected to a position eccentric from the center of the rotating disk (455), and the upper end (463) of the conversion link member (460) is connected to the connecting link member (440) so that its position in the connecting link member (440) is fixed by a position fixing means such as a nut. At this time, the upper end (463) of the conversion link member (460) is connected to the connecting link member (440) located at the bottommost among the plurality of connecting link members (440).

[0053] Accordingly, when the rotary motor (450) operates and the rotary disk (455) rotates, the lower part (461) of the conversion link member (460) connected to the rotary disk (455) rotates, and the upper part (463) of the conversion link member (460) connected to the connecting link member (440) reciprocates linearly, so that the rotational motion of the rotary disk (455) is converted into reciprocating linear motion by the conversion link member (460). Then, the reciprocating linear motion converted by the conversion link member (460) is transmitted to the operating link member (420) and the supporting link member (430) through the connecting link member (440), and as a result, the operating link member (420) reciprocates linearly in the up-and-down direction together with the supporting link member (430).

[0054] The rotary mechanism (400) having the above configuration can stably and smoothly rotate and vibrate the nozzle assembly (300) in the up-and-down direction while applying the rotary driving force of the rotary motor (450), which has advantages in terms of control, etc. However, the rotary mechanism in the present invention is not limited to the configuration and operating mechanism disclosed in the present embodiment, and can be implemented with various other configurations and operating mechanisms.

[0055] Hereinafter, the configuration of the mobile cart in the pesticide spraying device according to the present invention will be described in detail. Fig. 3 is a perspective view showing the front rail wheel, front rail guide, and front ground wheel arranged on the rail in the pesticide spraying device of Fig. 1.

[0056] Referring to FIGS. 1 and 3, the moving cart (100) includes a cart body (110), a cart handle (115), a front rail wheel (121), a front rail guide (122), a front ground wheel (123), a rear rail wheel (131), a rear rail guide (132), and a rear ground wheel (141) as described above.

[0057] The cart body (110) is a part that forms the body of the mobile cart (100) as illustrated in FIG. 1, and provides a frame on which the support frame (210), pesticide supply pipe (220), nozzle assembly (300), and rotation mechanism (400) described above are installed. That is, the support frame (210), pesticide supply pipe (220), nozzle assembly (300), and rotation mechanism (400) are installed on the cart body (110) of the mobile cart (100). In addition, although not illustrated in the attached drawing, the cart body (110) may have a hose winder (not illustrated) installed in the upper area between the support frame (210) and the cart handle (115), and a pesticide hose that connects the pesticide storage tank and the pesticide supply pipe (220) to each other is wound on the hose winder.

[0058] The cart handle (115) is a part that the worker holds when the mobile cart (100) is manually moved by the worker, and is provided on the rear side of the cart body (110) as illustrated in Fig. 1. Meanwhile, although not illustrated in the attached drawing, a control panel (not illustrated) may be installed in the upper area of ​​the cart handle (115) for the worker to control the overall operation of the pesticide spraying device.

[0059] The front rail wheels (121) are provided in the form of rotating rollers or rotating drums as illustrated in FIGS. 1 and 3, and are respectively provided on both sides of the first drive shaft (125) extending left and right from the front side of the moving cart (100). These front rail wheels (121) come into contact with the rail when the moving cart (100) moves along the rail installed on the ground and rotate integrally with the first drive shaft (125). Meanwhile, it is preferable that the front rail wheels (121) be manufactured in a shape and material that has considerable weight so as to enable stable running on the rail.

[0060] Here, the first drive shaft (125) is supported by mechanical elements such as bearings provided in the bogie body (110), and is connected to the power means described above to rotate by the driving force provided by the power means. In addition, the front rail wheel (121) includes an inner connecting shaft (121a) extending inward along the longitudinal direction of the first drive shaft (125) from the central region of the front rail wheel (121) as shown in FIGS. 1 and 3, and is fixedly connected to the end of the first drive shaft (125) through this inner connecting shaft (121a) so as to rotate integrally with the first drive shaft (125). Specifically, the front rail wheel (121) can be fixedly connected to the end of the first drive shaft (125) by fastening a bolt (B) to two fastening holes (see FIG. 4) formed in the inner connecting shaft (121a) while the end of the first drive shaft (125) is inserted into the inside of the inner connecting shaft (121a) provided in a tubular shape.

[0061] The front rail guide (122) is provided on both sides of the first drive shaft (125) extending in the left and right directions from the front side of the moving cart (100) as shown in FIGS. 1 and 3, and is arranged between the front rail wheel (121) and the front ground wheel (123). This front rail guide (122) is a means for preventing the front rail wheel (121) from coming off the rail (R) when the moving cart (100) moves along the rail (R).

[0062] In particular, the front rail guide (122) is provided in a disk shape as illustrated in FIGS. 1 and 3, and includes an outer periphery inclined surface (122a) whose outer diameter gradually decreases from the front ground wheel (123) to the front rail wheel (121), that is, from the outside to the inside. The outer periphery inclined surface (122a) of the front rail guide (122) reduces the contact area with the rail (R) when the moving cart (100) moves along the rail (R), thereby minimizing the possibility of the stable running of the moving cart (100) being hindered or the front rail guide (122) being damaged due to frictional force generated when the front rail guide (122) comes into contact with the rail (R) when the moving cart (100) moves along the rail (R).

[0063] Furthermore, the front rail guide (122) is fixedly connected to the front rail wheel (121) so as not to rotate integrally with the front rail wheel (121), but is provided so as to be rotatable with respect to the front rail wheel (121), i.e., so as to be rotatable independently of the front rail wheel (121). Accordingly, even if the front rail guide (122) comes into contact with the rail (R) while the mobile cart (100) moves along the rail (R), it rotates independently of the front rail wheel (121), thereby reducing the frictional force caused by the contact between the front rail guide (122) and the rail (R), thereby further minimizing the possibility that the stable running of the mobile cart (100) is hindered or the front rail guide (122) is damaged due to the contact between the front rail guide (122) and the rail (R).

[0064] Meanwhile, the front rail guide (122) is fixedly connected to the front ground wheel (123) described later or is formed integrally with the front ground wheel (123), so that when the moving cart (100) is moved on the ground by a worker, it rotates integrally with the front ground wheel (123).

[0065] The front ground wheels (123) are provided on both sides of the first drive shaft (125) extending left and right from the front side of the mobile cart (100) as shown in FIGS. 1 and 3, and are arranged on the outside of the front rail wheels (121). These front ground wheels (123) rotate in contact with the ground when the mobile cart (100) moves on the ground.

[0066] In particular, the front ground wheel (123) does not rotate integrally with the front rail wheel (121), i.e., is not fixedly connected to the front rail wheel (121), but is connected to the front rail wheel (121) so as to be rotatable relative to the front rail wheel (121) with the front rail guide (122) interposed therebetween. At this time, the front rail guide (122) is fixedly connected to the front ground wheel (123) as described above and rotates integrally with the front ground wheel (123). Accordingly, the front ground wheel (123) is fixedly connected to the first drive shaft (125) and rotates independently of the front rail wheel (121) having a considerable weight when the mobile cart (100) is moved on the ground by a worker, so that the rotation of the front ground wheel (123) is not limited by the load of the front rail wheel (121) or the first drive shaft (125), and thus the worker can easily rotate the mobile cart (100) in the left and right directions when the mobile cart (100) is moved on the ground, thereby improving the convenience of the worker in the process of moving the mobile cart (100) on the ground.

[0067] Meanwhile, details regarding the combined structure of the front ground wheel (123) and the front rail wheel (122) that exert the above-described effect, i.e., the structure in which the front ground wheel (123) is coupled to the front rail wheel (121) so as to be rotatable relative to the front rail wheel (121) rather than rotating integrally with the front rail wheel (121), will be described later with reference to FIG. 4.

[0068] Furthermore, the front ground wheel (123) may be provided with the ability to rotate in the left and right directions, as described above, in that its rotation is not limited by the load of the front rail wheel (121) or the first drive shaft (125).

[0069] The rear rail wheels (131) are provided on both sides of the second drive shaft (135) extending left and right from the rear side of the moving cart (100) as illustrated in FIG. 1. These rear rail wheels (131) come into contact with the rail when the moving cart (100) moves along the rail installed on the ground and rotate integrally with the second drive shaft (135). Meanwhile, the rear rail wheels (131), like the front rail wheels (121) described above, are preferably provided in the form of a rotating roller or a rotating drum, and are preferably manufactured in a form and material having a considerable weight so as to enable stable running on the rail.

[0070] Here, the second drive shaft (135) is supported by mechanical elements such as bearings provided in the bogie body (110), and is connected to the power means described above to rotate by the driving force provided by the power means. In addition, the rear rail wheel (131), like the front rail wheel (121) described above, includes an inner connecting shaft (131a) extending inward along the longitudinal direction of the second drive shaft (135) in the central region of the rear rail wheel (131) as illustrated in FIG. 1, and is fixedly connected to the end of the second drive shaft (135) through this inner connecting shaft (131a) so as to rotate integrally with the second drive shaft (135). Specifically, the rear rail wheel (131) can be fixedly connected to the end of the second drive shaft (135) by fastening a bolt (not shown) to a fastening hole (not shown) formed in the inner connecting shaft (131a) while the end of the second drive shaft (135) is inserted into the inner connecting shaft (131a) provided in a tubular shape.

[0071] The rear rail guide (132) is provided on both sides of the second drive shaft (135) extending left and right from the rear side of the moving cart (100) as illustrated in FIG. 1, and is arranged on the outside of the rear rail wheel (131). This rear rail guide (132) is a means for preventing the rear rail wheel (131) from coming off the rail (R) when the moving cart (100) moves along the rail (R). Meanwhile, the rear rail guide (132) is provided so that the moving cart (100) does not come into contact with the ground and floats above the ground when it moves on the ground.

[0072] In particular, the rear rail guide (132) is provided in a disk shape as illustrated in FIG. 1, similar to the front rail guide (122) described above, but includes an outer periphery inclined surface (132a) whose outer diameter gradually decreases as it goes toward the rear rail wheel (131), that is, from the outside to the inside. The outer periphery inclined surface (132a) of the rear rail guide (132) reduces the contact area with the rail (R) when the moving cart (100) moves along the rail (R), thereby minimizing the possibility of the stable running of the moving cart (100) being hindered or the rear rail guide (132) being damaged due to frictional force generated when the rear rail guide (132) comes into contact with the rail (R) when the moving cart (100) moves along the rail (R).

[0073] Meanwhile, in the present embodiment, the rear rail guide (132) is fixedly connected to the rear rail wheel (131) by fastening a plurality (four) bolts (B) to the rear rail wheel (131) in a state where the outer connecting shaft (131b) of the rear rail wheel (131) is inserted and arranged in the center region thereof as illustrated in FIG. 1, so that the moving carriage (100) rotates integrally with the rear rail wheel (131) when it moves along the rail (R). At this time, the outer connecting shaft (131b) extends outward along the longitudinal direction of the second driving shaft (135) from the center region of the rear rail wheel (131) and is provided in a tubular shape.

[0074] However, unlike the present embodiment, the rear rail guide (132) may be provided so as to be rotatable relative to the rear rail wheel (131), i.e., rotatable independently of the rear rail wheel (131), without being fixedly coupled to the rear rail wheel (131), in order to reduce the frictional force caused by the contact between the rear rail guide (132) and the rail (R) even if the rear rail guide (132) comes into contact with the rail (R) during the process of the moving cart (100) moving along the rail (R), and the technical details of the coupling structure of the rear rail guide (122) and the rear rail wheel (132) to implement this may be substantially identically applied to the coupling structure of the front ground wheel (123) and the front rail wheel (122) described below with reference to FIG. 4. In this case, it is possible to further minimize the possibility of the stable running of the moving carriage (100) being hindered or the damage to the rear rail guide (132) due to contact between the rear rail guide (132) and the rail (R).

[0075] The rear ground wheels (141) are provided on the left and right sides of the moving cart (100) at the rear side of the moving cart (100) as shown in Fig. 1, and are positioned further rearward than the rear rail wheels (131) on the moving cart (100). These rear ground wheels (141) rotate in contact with the ground when the moving cart (100) moves on the ground.

[0076] Specifically, the rear ground wheels (141) are provided on both sides of a wheel support (145) extending left and right from the rear side of the mobile cart (100) as illustrated in FIG. 1, and are coupled to the wheel support (145) so as to be able to rotate left and right with respect to the wheel support (145) so as to be able to rotate left and right when the mobile cart (100) is moved on the ground by a worker. For example, the rear ground wheels (141) may be provided as so-called 'caster wheels' that are able to rotate left and right. The structure of caster wheels is well known, and thus a detailed description thereof will be omitted.

[0077] Meanwhile, the wheel support (145) is provided so that the length thereof can be adjusted in the left and right directions, taking into account the distance between a pair of rails (R), as illustrated in Fig. 1, so that the rear ground wheels (141) do not interfere with the rails (R) when the mobile cart (100) moves along the rails (R). Accordingly, the distance between the left and right pair of rear ground wheels (145) can be set differently depending on the adjustment of the length of the wheel support (145).

[0078] Specifically, the wheel support (145) includes a center support (145a), a left support (145b), and a right support (145c) provided in the form of a bar with an empty interior as illustrated in FIG. 1. At this time, the left support (145b) and the right support (145c) can be fixedly connected to the center support (145a) by fastening bolts (not shown) while being inserted into each of the two ends of the center support (145a). Accordingly, the wheel support (145) can be adjusted in a manner in which the left support (145b) and the right support (145c) are each pulled out from the center support (145a) by a required length according to the distance between a pair of rails (R), and then the bolts are fastened to the center support (145a). For reference, the left rear ground wheel (141) is connected to the end of the left support (145b) to enable left-right rotation, and the right rear ground wheel (141) is connected to the end of the right support (145c) to enable left-right rotation.

[0079] Fig. 4 is an exploded perspective view for explaining the joint structure of the front rail wheel, front rail guide, and front ground wheel in the pesticide spraying device of Fig. 1.

[0080] The front rail wheel (121) includes an inner connecting shaft (121a) extending inwardly along the longitudinal direction of the first drive shaft (125) in its central region, as illustrated in FIGS. 1, 3, and 4, and an outer connecting shaft (121b) extending outwardly along the longitudinal direction of the first drive shaft (125) in its central region. In addition, the front ground wheel (123) has a connecting shaft insertion hole (123b) formed through its central region, into which the outer connecting shaft (121b) of the front rail wheel (121) is inserted. For reference, the inner connecting shaft (121a) is used to fixedly connect the front rail wheel (121) to the first drive shaft (125), as described above.

[0081] The front ground wheel (123) is coupled to the front rail wheel (121) by a rotational fastening mechanism (150) as shown in FIG. 4 so that the front ground wheel (123) can rotate about the outer connecting shaft (121b) while being inserted and positioned through the connecting shaft insertion hole (123b) of the front rail wheel (121) as shown in FIGS. 1, 3, and 4, but does not detach from the outer connecting shaft (121b). That is, the rotational fastening mechanism (150) is a means for fastening the front ground wheel (123) to the outer connecting shaft (121b) of the front rail wheel (121) so that the front ground wheel (123) can rotate about the outer connecting shaft (121b) of the front rail wheel (121) while not detaching from the outer connecting shaft (121b).

[0082] Here, the front rail guide (122) is provided in a state of being fixedly connected to the front ground wheel (123), and a connecting shaft insertion hole (not shown) communicating with the connecting shaft insertion hole (123b) of the front ground wheel (123) is formed through the center region thereof. Accordingly, the outer connecting shaft (121b) of the front rail wheel (121) sequentially passes through the connecting shaft insertion hole (not shown) of the front rail guide (122) and the connecting shaft insertion hole (123b) of the front ground wheel (123) and is inserted into the front rail guide (122) and the front ground wheel (123).

[0083] Specifically, in the present embodiment, the rotational fastening mechanism (150) includes a nut member (151) that is inserted and positioned inside the outer connecting shaft (121b) provided in a tubular shape as illustrated in FIG. 4 and fixedly connected to the outer connecting shaft (121b) by welding or the like, a bolt member (152) that penetrates the connecting shaft insertion hole (123b) of the front ground wheel (123) and the connecting shaft (121b) of the front rail wheel (121) from the outside of the front ground wheel (123) and is fastened to the nut member (151), and a washer member (153) interposed between the outer surface of the front ground wheel (123) and the head of the bolt member (152). However, in the present invention, the rotational fastening mechanism is not limited to this embodiment, and it is obvious that any one of various types of rotational fastening mechanisms can be provided as long as the front ground wheel (123) can rotate about the outer connecting shaft (121b) of the front rail wheel (121) while not being separated from the outer connecting shaft (121b).

[0084] While the present invention has been described in detail through preferred embodiments thereof, it will be apparent to those skilled in the art that the present invention is not limited to the aforementioned preferred embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. Accordingly, such modifications and variations should fall within the scope of the claims of the present invention.

[0085] The present invention can be widely used in the field of manufacturing devices for spraying pesticides on various types of crops.

Claims

1. Mobile cart; A nozzle assembly installed on the above-mentioned mobile cart and spraying pesticides toward crops; and A pesticide supply pipe connected to the nozzle assembly to supply pesticide to the nozzle assembly. Including, A pesticide spraying device including a moving carriage, characterized in that the nozzle assembly sprays pesticide while rotating and vibrating within a preset rotation angle range.

2. In paragraph 1, The above pesticide spraying device A rotating mechanism installed on the above-mentioned moving cart and rotating and vibrating the nozzle assembly in the up-and-down direction within a preset rotation angle range. Including more, The above nozzle assembly A rotating body part that rotates and vibrates in the up-and-down direction by the above rotating mechanism part; and A spray nozzle unit that is provided as a pair on the left and right with the rotating body unit in between, is connected to the rotating body unit, and rotates and vibrates up and down together with the rotating body unit while spraying the pesticide supplied through the pesticide supply pipe toward the crop. A pesticide spraying device comprising a mobile cart, characterized in that it includes a .

3. In paragraph 2, The above rotating mechanism rotary motor; A rotating disk coupled to the rotation shaft of the above rotation motor and rotating according to the operation of the above rotation motor; An operating link member arranged to extend in a vertical direction and configured to perform a reciprocating linear motion in a vertical direction; A conversion link member whose lower part is connected at an eccentric position from the center of the rotating disk and converts the rotational motion of the rotating disk into a reciprocating linear motion of the operating link member; and A rotary plate having one end fixedly connected to the rotating body of the nozzle assembly and the other end connected to the operating link member, which rotates and vibrates in the up-and-down direction as the operating link member reciprocates linearly in the up-and-down direction. A pesticide spraying device comprising a mobile cart, characterized in that it includes a .

4. In paragraph 3, The above rotating mechanism A support link member arranged to extend vertically in a longitudinal direction parallel to the operating link member while being spaced apart from the operating link member; and A connecting link member that connects the above-mentioned operating link member and the above-mentioned supporting link member to each other and connects the upper part of the above-mentioned conversion link member so that the above-mentioned operating link member and the above-mentioned supporting link member are integrated into a structure and perform a reciprocating linear movement in the up-and-down direction. A pesticide spraying device comprising a mobile cart characterized by further including:

5. In paragraph 2, The above nozzle assembly A pesticide supply bolt member having its rear end fixedly connected to the pesticide supply pipe while being positioned through the above rotating body part, and having an internal path formed therein for delivering the pesticide supplied through the pesticide supply pipe to the spray nozzle part. A pesticide spraying device comprising a mobile cart characterized by further including:

6. In paragraph 1, The above moving cart Front rail wheels provided on both sides of a first drive shaft extending left and right from the front side of the above-mentioned moving vehicle, and which come into contact with the rail and rotate integrally with the first drive shaft when the above-mentioned moving vehicle moves along a rail installed on the ground; Rear rail wheels provided on both sides of a second drive shaft extending left and right from the rear side of the above-mentioned moving cart, and which come into contact with the rail and rotate integrally with the second drive shaft when the above-mentioned moving cart moves along the rail; Front ground wheels provided on both sides of the first drive shaft and rotating in contact with the ground when the moving cart moves on the ground; and Rear ground wheels are provided on the left and right sides of the mobile cart at the rear side of the mobile cart, and rotate in contact with the ground when the mobile cart moves on the ground. A pesticide spraying device comprising a mobile cart, characterized in that it includes a .

7. In paragraph 6, The above front ground wheels A pesticide spraying device including a mobile carriage characterized in that it does not rotate integrally with the front rail wheel but is provided to rotate relative to the front rail wheel.

8. In paragraph 7, The above rear ground wheels A pesticide spraying device including a mobile cart, characterized in that the mobile cart is provided on each side of a wheel support extending in the left and right direction from the rear side of the mobile cart and is coupled to the wheel support so as to be able to rotate in the left and right direction.

9. In paragraph 7, The above front rail wheels Including an outer connecting shaft extending outward along the longitudinal direction of the first driving shaft in the central region, The above front ground wheels A connecting shaft insertion hole is formed through the central area into which the outer connecting shaft is inserted, The above front ground wheels A pesticide spraying device including a mobile carriage, characterized in that the outer connecting shaft is connected to the front rail wheel by a rotational fastening mechanism so that the outer connecting shaft can rotate with respect to the outer connecting shaft while being inserted and positioned through the connecting shaft insertion hole, but does not detach from the outer connecting shaft.

10. In paragraph 7, The above moving cart A front rail guide provided on each side of the first drive shaft to prevent the front rail wheel from coming off the rail when the moving cart moves along the rail; and Rear rail guides provided on both sides of the second drive shaft to prevent the rear rail wheels from coming off the rail when the moving cart moves along the rail. A pesticide spraying device comprising a mobile cart characterized by further including:

11. In paragraph 10, The above front rail guide A pesticide spraying device including a mobile carriage arranged between the front ground wheel and the front rail wheel, characterized in that it does not rotate integrally with the front rail wheel but is provided to rotate relative to the front rail wheel.

12. In paragraph 10, The above front rail guide It is arranged between the front ground wheel and the front rail wheel, and is provided in a disk shape, and includes an outer periphery inclined surface whose outer diameter gradually decreases from the front ground wheel to the front rail wheel. The above rear rail guide A pesticide spraying device including a mobile carriage, characterized in that it is provided in a disk shape and includes an outer peripheral slope whose outer diameter gradually decreases toward the rear rail wheel.

Images