KR20230073655A - variable tread apparatus of agricultural 4-wheel vehicle - Google Patents

Abstract

The present invention relates to a track changer for a four-wheeled agricultural vehicle. The present invention provides a steering means capable of individually steering all of the left and right wheels of the front and rear wheels on each control arm that can be rotated at a predetermined angle, so that the left and right wheels of a four-wheeled agricultural vehicle are adjusted to the width of the ridge of the paddy field on both sides of the ridge The track of the agricultural four-wheeled vehicle can be varied by increasing or decreasing the distance between the left and right wheels on both sides of the front and rear wheels so that it can be positioned in the furrow of the agricultural four-wheeled vehicle. Since the track of the agricultural four-wheeled vehicle is changed while rolling in the rolling direction, it can be usefully used in the field of changing the track of the agricultural four-wheeled vehicle to minimize the frictional resistance between the ground and the left and right wheels of the field.

Description

Variable tread apparatus of agricultural 4-wheel vehicle

The present invention relates to a track changer for a four-wheeled agricultural vehicle, and more particularly, to a track of a four-wheeled agricultural vehicle so that the left and right wheels constituting the front and rear wheels of the agricultural four-wheeled vehicle can be stably driven along the furrows on both sides of the ridge It relates to a track variable device for a four-wheeled agricultural vehicle capable of varying

A four-wheeled agricultural vehicle is one of the vehicles for loading and transporting agricultural materials and crops in a loading box. am.

In these four-wheeled agricultural vehicles, the left and right wheels of the front and rear wheels are simply installed on both ends of the body frame or axle, and only the left and right wheels of the front wheels are provided to be able to change direction, so that the width of the body frame as well as the track of the agricultural four-wheeled vehicle is adjusted. There was no means available to do so.

Therefore, depending on the crop, the width of the ridge is prepared and cultivated in various ways. If the track of the agricultural four-wheeled vehicle and the width of the ridge do not match, the wheel on one side is located in the furrow between the furrows, and the wheel on the other side is located in the furrow, not the furrow between the furrows. It had to be operated with both left and right wheels positioned on the ridge.

As above, when trying to operate a four-wheeled agricultural vehicle, there was a disadvantage that it was not hard to operate because it was a place where crops were planted and cultivated in the ridge, and if there were crops, it was impossible to operate at all.

In addition, when the wheel on one side is located in the furrow between the furrows and the wheel on the other side is located in the furrow other than the furrow between the furrows, the four-wheeled agricultural vehicle is higher than the furrow and its height is not uniform. It has no choice but to drive in a tilted and rocking state on one side, and there was a negative side effect that it was difficult to drive and the possibility of a safety accident was high.

In order to reduce these existing disadvantages, the width of the ridges differs depending on the crops cultivated in the field, and a track change device for appropriately adjusting the track of a four-wheeled agricultural vehicle according to various types of ridges was urgently required.

Based on the above urgent request, an agricultural electric transport vehicle proposed to control the track of an agricultural vehicle is proposed in Korean Utility Model Registration No. 20-0108481 (hereinafter referred to as "Document 1").

In the agricultural electric transport vehicle of Document 1, two wheels capable of rotating 360° are installed at the front of the body, and drive wheels with sprockets are installed at the rear of the body. The driving wheel is connected through a chain so that the pinion and gear of the DC motor are interlocked, the body is formed symmetrically from side to side, and a width variable means is provided so that the width of the body can be varied by a fastening member.

The variable width means is provided with a connection part having a plurality of through holes formed at equal intervals in the body and a connecting member having a plurality of through holes formed at equal intervals, and the connection part and the through hole of the connection part are matched to fasten with a fastening member, At the same time, it was possible to achieve a variable width of the body through the connecting portion and the connecting member.

Another variable width means is provided to rotate a hollow housing-shaft having a sprocket at the lower part of the body, moving a fixed-shaft having wheels on the housing-shaft in the axial direction and fixing it with a fastening member, thereby positioning the wheels on both left and right sides. It was possible to plan the track of agricultural electric transport vehicles by varying the .

However, in the agricultural electric transport vehicle of the above document 1, the body itself is moved in the width direction of the body through the connection part of the body, the connecting member, and the fastening member whenever the track of the agricultural electric transport vehicle is to be adjusted according to the width of the ridge of the field Sikkim was too cumbersome and difficult, as well as unreasonable.

In addition, whenever you want to adjust the track of the agricultural electric transport vehicle by changing the position of the wheels on both the left and right sides according to the width of the ridge of the field, the fixed-axis in each housing-axis provided at the bottom of the body is moved in the axial direction and fixed with a fastening member The process of doing so was too cumbersome and difficult, as well as unreasonable.

(Document 1) KR20-0108481 Y1 (1997.08.22. registration)

An object of the present invention has been researched and developed to solve the conventional problems and drawbacks as described above. By rotating all of the left and right wheels of the front and rear wheels at a predetermined angle through each control arm, It is possible to change the track of the agricultural four-wheeled vehicle by increasing or decreasing the distance between the left and right wheels, and as a result, the left and right wheels of the agricultural four-wheeled vehicle can be positioned in the furrows on both sides of the ridge according to the width of the ridge of the field. It is an object of the present invention to provide a track change device for a four-wheeled agricultural vehicle that is operated along a relatively flat furrow compared to a furrow and enables stable driving.

In addition, another object of the present invention is to steer the left and right wheels of the agricultural four-wheeled vehicle in the direction of the track, and then rotate the control arm at a predetermined angle to change the tread of the agricultural four-wheeled vehicle according to the width of the ridge of the field, thereby making the agricultural four-wheeled vehicle When rolling, the left and right wheels roll in the rolling direction of the wheels, and the track of the agricultural four-wheeled vehicle is changed. As a result, the frictional resistance between the field and the left and right wheels is minimized. It is an object of the present invention to provide a track change device for a four-wheeled agricultural vehicle.

In order to solve the above problems, the four-wheeled agricultural vehicle of the present invention is provided with a loading box on the body frame, front wheels are provided at both ends of the body frame, and rear wheels are provided at both rear ends, but the distance between the left and right wheels of the front and rear wheels is provided. It includes a track variable end capable of varying the run, and the run variable end is mounted on four corners of the body frame, respectively, and is centered on an upright housing provided upright on a plate-shaped bracket and an upright rotation shaft inserted into the upright housing. A control arm rotatable and extending to one side at the lower end of the upright rotary shaft by a predetermined length, a track variable motor reducer connected to the upper end of the upright rotary shaft so as to rotate and drive the control arm, and the front and rear wheels forming a control arm. It is characterized in that it is provided including one wheel installed at one end of the arm.

A steering unit may be provided at one end of the control arm to change one wheel constituting the front and rear wheels in an arbitrary direction.

The steering means is rotatably installed at one end of the control arm about a center line in the vertical direction, and is installed in connection with a steering-axis including one of front and rear wheels at the bottom and an upper end of the steering-shaft to steer- It is characterized in that it is provided as a steering motor reducer for rotating the shaft in an arbitrary direction.

It is preferable that the tread variable motor reducer and the steering motor reducer adopt a step motor capable of forward and reverse rotation and stopping after rotating only as much as set by the number of revolutions and rotation angle. The reason is that the control arm and steering-axis must be able to be rotated to any angle or direction desired by the operator and then held stationary.

A driving motor for directly driving wheels constituting front and rear wheels may be provided at a lower end of the steering-shaft. The travel motor is provided as an in-wheel motor in which a fixed axle is a stator and the outer shape itself is a rotor, and the travel motor is capable of forward and reverse rotation to enable forward and backward movement, It is even more preferable if it has a brake function.

According to the present invention, all of the left and right wheels of the front and rear wheels can be rotated at a predetermined angle through each control arm, and by providing individual steering means, the distance between the left and right wheels of the front and rear wheels is increased and decreased to increase or decrease the distance between the left and right wheels of the agricultural four-wheeled vehicle. The track can be varied, and as a result, the left and right wheels of the agricultural 4-wheeled vehicle can be positioned in the furrows on both sides of the ridge according to the width of the ridge of the field, so the left and right wheels of the agricultural 4-wheeled vehicle run along a relatively flat furrow compared to the ridge. There is a useful effect that enables stable driving.

In addition, according to the present invention, after steering the left and right wheels of the agricultural four-wheeled vehicle in the runway direction, the control arm is rotated at a predetermined angle to change the tread of the agricultural four-wheeled vehicle according to the width of the ridge of the field. As the left and right wheels roll in the rolling direction of the wheels, the track of the agricultural four-wheeled vehicle is changed, and as a result, the frictional resistance between the ground and the left and right wheels of the field is minimized, so the four-wheeled agricultural vehicle can be moved more easily. .

1 is a perspective view showing a four-wheeled agricultural vehicle to which a track change device according to a preferred embodiment of the present invention is applied.
Figure 2 is a perspective view showing a state viewed from the bottom of Figure 1;
3 is a perspective view showing a track variable means including a steering means extracted from a four-wheeled agricultural vehicle to which a track variable device according to the present invention is applied.
4 to 7 are views showing a course change process of a four-wheeled agricultural vehicle to which a track change device according to the present invention is applied.

Hereinafter, the advantages and features of the present invention, and methods for achieving them will become clear with reference to embodiments described later in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms, only the embodiments are provided so that the disclosure of the present invention is complete, and those skilled in the art in the art to which the present invention belongs It is provided to fully inform the person of the scope of the invention, and the invention is only defined by the scope of the claims. Like reference numbers designate like elements throughout the specification.

1 to 7 are views shown to explain a four-wheeled agricultural vehicle to which a track changer according to a preferred embodiment of the present invention is applied.

As shown in the drawing, in the four-wheeled agricultural vehicle according to the present invention, a loading box 120 is provided on a body frame 110, and front wheels 130 are provided on both front ends of the body frame 110, and rear wheels are provided on both rear ends ( 132) is provided, and the distance between the left and right wheels of both the front wheel 130 and the rear wheel 132 is varied, and the track variable stage 140 including a steering means is provided.

The runway variable units 140 are provided at four corners of the body frame 110 so that the distance between the left and right wheels of both the front wheel 130 and the rear wheel 132 can be simultaneously varied. The track variable unit 140 includes an upright housing 141 mounted on the lower surface of the vehicle body frame 110, a control arm 143 rotatably installed in the upright housing 141, and the control arm 143. A track variable motor reducer 145 for rotationally driving and a steering means 146 for converting one wheel constituting the front wheel 130 and the rear wheel 132 to one side of the control arm 143 in an arbitrary direction is provided, including

The upright housing 141 is provided in a cylindrical shape rotatably accommodating the upright rotary shaft 144, and a plate-shaped bracket 142 mounted on the lower surface of the body frame 110 is provided at the upper end thereof.

The control arm 143 has an upright rotary shaft 144 extending upward on one side so that the overall shape is in the shape of a Korean consonant, and the upright rotary shaft 144 is rotatable in the upright housing 141. insert is installed.

The track variable motor reducer 145 is mounted on the bracket 142 of the upright housing 141 so as to be connected to the upper end of the upright rotation shaft 144 of the control arm 143. The track variable motor reducer 145 is composed of a normal and reverse motor and a reducer, and the normal and reverse motor is preferably adopted as a step motor that can rotate forward and reverse and rotates only as much as set by the number of revolutions and rotation angle and then stops.

The steering means 146 is provided with one wheel constituting the front wheel 130 and the rear wheel 132 at the lower end, and is rotatably installed at one end of the control arm 143 with respect to the center line in the vertical direction - a steering-axis ( 147) and a steering motor reducer 148 installed on the control arm 143 so as to be connected to the upper end of the steering-shaft 147 to rotate the steering-shaft 147 in an arbitrary direction.

The steering-shaft 147 is rotatably vertically rotatably installed at one end of the control arm 143, and one wheel constituting the front wheel 130 and the rear wheel 132 may be installed at the lower end of the rotation shaft unit. A wheel mounting portion is provided in the shape of a wheel mounting portion, and a fixed axle for installing one wheel constituting the front wheel 130 and the rear wheel 132 may be provided at a lower end of the wheel mounting portion.

The steering motor reducer 148, like the track variable motor reducer 145, is composed of a forward and reverse motor and a reducer, and the forward and reverse motor is capable of forward and reverse rotation, rotating only as much as set by the number of revolutions and rotation angle, and then stopping. It is preferable to be provided with a motor. The reason is that it is sufficient if the steering-shaft 147 provided with the left and right wheels at the bottom can be rotated within a range of 90 degrees, which is perpendicular to the track direction of the left and right wheels, that is, the driving direction.

The steering means 146 of the front wheel 130 and the rear wheel 132 above does not drag the left and right wheels of the front wheel 130 and the rear wheel 132 when changing the track of the four-wheeled agricultural vehicle, and moves in the rolling direction of the left and right wheels. This is to minimize the frictional resistance between the ground and the left and right wheels of the paddy field so that the track of the four-wheeled agricultural vehicle can be changed while rolling.

A driving motor 149 for driving the front wheel 130 or the rear wheel 132 is provided on the fixed axle at the lower end of the steering-shaft 147, and the driving motor 149 has a horizontal fixed axle as a stator. It is an in-wheel motor provided with a rotor and the outer appearance itself is provided as a rotor. An in-wheel motor is installed on the fixed axle at the lower end of the steering-shaft 147, but the front wheel 130 or the front wheel 130 or A wheel that is a rear wheel 132 can be mounted. The travel motor 149 is sufficient to be a motor capable of forward and reverse rotation to enable forward and backward movement.

The course change process of the four-wheeled agricultural vehicle to which the track change device according to the present invention configured as described above is applied will be described in detail.

As shown in FIGS. 1 and 4 , the front wheels 130 and the rear wheels 132 of the four-wheeled agricultural vehicle are in a state in which they can move forward or backward, and the left and right wheels constituting the front wheel 130 and the rear wheel 132 of the four-wheeled agricultural vehicle. It is a state in which the runway, which is an interval of , is arranged in the width of the body frame 110.

In this way, the steering motor reducer 148 constituting the steering means 146 of the front wheel 130 and the rear wheel 132 in a state where the track of the four-wheeled agricultural vehicle is arranged in the width of the body frame 110 as shown in FIG. While operating, the left and right wheels of the front wheel 130 and the rear wheel 132 are centered on the clause-axis 147 at the end of the control arm 143 in the direction of the rotation arrow in FIG. It is stopped after being rotated in a direction perpendicular to the driving direction (direction of 90 degrees). In other words, the left and right wheels of the front wheel 130 and the rear wheel 132 are steered in the track direction of the four-wheeled agricultural vehicle as shown in FIG. 5 to change direction.

In this state, when the track variable motor reducer 145 on the upright housing 141 constituting the track variable unit 140 is operated for a predetermined time, the control arm connected to the track variable motor reducer 145 in the direction of the rotating arrow in FIG. The upright rotation shaft 144 of 143 is rotated outward of the body frame 110 by a predetermined angle with the upright housing 141 as the center.

As a result, the control arm 143 together with the front wheel 130 and the rear wheel 132 including the steering means 146 at the end of the control arm 143 is rotated by a predetermined angle to the position shown in the solid line in FIG. .

When the front wheel 130 and the rear wheel 132 are rotated together with the control arm 143 in this way, since the left and right wheels constituting the front wheel 130 and the rear wheel 132 are turned toward the track direction, the front wheel ( 130) and the left and right wheels of the rear wheel 132 are not dragged and roll in the rolling direction of the left and right wheels, thereby rotating and moving in a state in which the frictional resistance between the left and right wheels and the ground of the field is minimized.

In this way, the left and right wheels forming the front wheel 130 and the rear wheel 132 together with the control arm 143 are rotated at a predetermined angle to the outside of the body frame 110, and the left and right wheels forming the front wheel 130 and the rear wheel 132 The interval between them becomes farther away from each other, and thus the left and right wheels of the front wheel 130 and the rear wheel 132 are moved to the variable track position of the four-wheeled agricultural vehicle by the distance.

As described above, after the left and right wheels of the front wheel 130 and the rear wheel 132 are moved to the variable track position, when the steering motor reducer 148 constituting the steering means 146 of the front wheel 130 and the rear wheel 132 is operated again, The article-shaft 147 connected to the steering motor reducer 148 is rotated interlockingly, and as a result, the front wheels 130 together with the article-shaft 148 centered on the article-axis 148 at the end of the control arm 143. ) and the left and right wheels of the rear wheel 132 are reversely rotated in the direction of the rotation arrow in FIG.

In other words, as the left and right wheels of the front wheel 130 and the rear wheel 132 change direction in the driving direction of the agricultural 4-wheeled vehicle, the runway of the agricultural 4-wheeled vehicle is completed at an interval that expands the track as desired by the driver. .

As described above, after the driver has completed the change of the track of the four-wheeled agricultural vehicle as desired, the front wheels 130 and the front wheels 130 and As the left and right wheels of the rear wheel 132 are all rotated in the same direction, they move forward or backward.

Conversely, when the track of the agricultural four-wheeled vehicle is to be wider or smaller than the width of the vehicle body frame 110 in a state where the track of the agricultural four-wheeled vehicle is expanded, the driver may arbitrarily manipulate the vehicle as described above in order. It can be carried out simply and easily with the tread of

Although the above has been shown and described with respect to preferred embodiments of the present invention, the present invention is not limited to the specific embodiments described above, and common knowledge in the art to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Of course, various modifications are possible by those who have, and these modifications should not be individually understood from the technical spirit or prospect of the present invention.

110: body frame 120: loading box
130: front wheel 132: rear wheel
140: track variable unit 141: upright housing
142: bracket 143: control arm
144: upright rotary shaft 145: track variable motor reducer
146: steering means 147: steering-axis
148: steering motor reducer 149: travel motor

Claims (4)

A loading box is provided on the body frame, front wheels are provided at both ends of the body frame, and rear wheels are provided at both ends of the body frame.
The track variable end is mounted at four corners of the body frame, respectively, and is rotatable around an upright housing provided upright on a plate-shaped bracket and an upright rotation shaft inserted into the upright housing, and is rotatable at the lower end of the upright rotation shaft to one side A control arm extended by a predetermined length, a track variable motor reducer connected to the upper end of the upright rotary shaft so as to rotate and drive the control arm, and a wheel installed at one end of the control arm forming the front and rear wheels. A track changer for a four-wheeled agricultural vehicle, characterized in that provided. According to claim 1,
A track change device for a four-wheeled agricultural vehicle, characterized in that a steering means for switching one wheel constituting the front and rear wheels in an arbitrary direction is provided at one end of the control arm. According to claim 2,
The steering means is rotatably installed at one end of the control arm about a center line in the vertical direction, and is installed in connection with a steering-axis including one of front and rear wheels at the bottom and an upper end of the steering-shaft to steer- A track changer for a four-wheeled agricultural vehicle, characterized in that it is provided as a steering motor reducer for rotating the shaft in an arbitrary direction. According to claim 3,
A track change device for a four-wheeled agricultural vehicle, characterized in that a driving motor is provided at the lower end of the steering-shaft to directly drive wheels constituting the front and rear wheels.

Images