EP-4736640-A1 - WORK VEHICLE AND METHOD FOR INSTALLING WORK DEVICE

EP4736640A1EP 4736640 A1EP4736640 A1EP 4736640A1EP-4736640-A1

Abstract

Provided is a working vehicle to lower the position of the center of gravity of the vehicle to improve the stability of the vehicle. A working vehicle (1) includes a vehicle body (2), a traveling device (3) to support the vehicle body (2) such that the vehicle body (2) is allowed to travel, a working device (200) to perform work. The working device (200) includes pieces of equipment (201) located at opposite sides of the vehicle body (2) from each other.

Inventors

SAKANO, TOMOYOSHI
SOEJIMA, MASARU
HIBINO, Tsuyoshi
YOSHIDOME, Kazuhiro
TESHIMA, TAKESHI
FUKUDA, Ryosuke
MAKINO, RYOTA

Assignees

KUBOTA CORPORATION

Dates

Publication Date: 20260506
Application Date: 20240621

Claims (20)

A working vehicle comprising: a vehicle body; a traveling device to support the vehicle body such that the vehicle body is allowed to travel; and a working device to perform work; wherein the working device includes pieces of equipment located at opposite sides of the vehicle body from each other.
The working vehicle according to claim 1, wherein the opposite sides of the vehicle body at which the pieces of equipment are located are left and right sides of the vehicle body.
The working vehicle according to claim 1, wherein the opposite sides of the vehicle body at which the pieces of equipment are located are front and rear sides of the vehicle body.
The working vehicle according to claim 1, wherein the pieces of equipment located at the opposite sides of the vehicle body from each other have the same function.
The working vehicle according to claim 1, wherein the pieces of equipment located at the opposite sides of the vehicle body from each other have respective different functions.
The working vehicle according to claim 1, wherein the working device is a spreader to spread a liquid substance; the pieces of equipment are tanks to store the liquid substance to be spread; and the tanks include a first tank and a second tank located at the opposite sides of the vehicle body from each other.
The working vehicle according to claim 1, wherein the pieces of equipment of the working device include batteries; and the batteries include a first battery and a second battery located at the opposite sides of the vehicle body from each other.
The working vehicle according to claim 1, further comprising a support frame to support the pieces of equipment and attachable to and detachable from the vehicle body; wherein the support frame is located above the pieces of equipment.
The working vehicle according to claim 1, further comprising a support frame to support the pieces of equipment and attachable to and detachable from the vehicle body; wherein the support frame is located below the pieces of equipment.
The working vehicle according to claim 2, further comprising a frame structure provided at a periphery of the vehicle body and attached to the vehicle body; wherein the frame structure includes: a left frame located leftward of the vehicle body to extend in an up-down direction; a right frame located rightward of the vehicle body to extend in the up-down direction; and a lateral frame connecting the left frame and the right frame; and the pieces of equipment include a first piece of equipment located leftward of the left frame and a second piece of equipment located rightward of the right frame.
The working vehicle according to claim 8, wherein the support frame is configured to be attached to the vehicle body from above.
The working vehicle according to claim 9, wherein the support frame is configured to be attached to the vehicle body from front or rear.
The working vehicle according to claim 11 or 12, further comprising a height changing mechanism to change a height of the vehicle body that is a distance of the vehicle body from a ground surface.
A working vehicle comprising: a vehicle body; a traveling device to support the vehicle body such that the vehicle body is allowed to travel; and a lifting mechanism to raise and lower the vehicle body; wherein the lifting mechanism is configured to raise the vehicle body from a position below a working device to attach the working device to the vehicle body.
The working vehicle according to claim 14, wherein the lifting mechanism is configured to lower, together with the vehicle body, the working device attached to the vehicle body from a position above a rest toward the rest to detach the working device from the vehicle body.
The working vehicle according to claim 14, wherein the vehicle body has therein or thereon a power supply apparatus and a power transmission mechanism to transmit power generated by the power supply apparatus to the working device; and the lifting mechanism is configured to raise the vehicle body, which has therein or thereon the power supply apparatus and the power transmission mechanism, to attach the working device to the vehicle body.
The working vehicle according to claim 16, wherein the power supply apparatus includes a battery and a motor to be driven by electricity supplied from the battery; and the lifting mechanism is configured to raise the vehicle body, which has therein or thereon the battery and the motor, to attach the working device to the vehicle body.
The working vehicle according to claim 14, wherein the vehicle body includes an attaching/detaching mechanism to allow attachment and detachment of the working device to and from the vehicle body.
The working vehicle according to claim 18, wherein the attaching/detaching mechanism includes a locking mechanism to secure the working device to the vehicle body when the working device is placed on the vehicle body.
The working vehicle according to claim 14, wherein the vehicle body includes a protrusion raised upward at an upper portion thereof; and the working device includes, at a lower portion thereof, a recess to receive the protrusion when the working device is attached to the vehicle body.

Description

Technical Field The present invention relates to a working vehicle to perform work such as agricultural work, and a method of attaching a working device to the working vehicle. Background Art The working vehicle disclosed in PTL 1 has been known. The working vehicle disclosed in PTL 1 includes a vehicle body, a traveling device, and a working device (spreader). The working device includes a plurality of pieces of equipment, such as tanks, which house a substance to be spread. The working vehicle disclosed in PTL 2 has been known. The working vehicle (tractor) disclosed in PTL 2 includes a vehicle body (traveling machine body), a power supply apparatus (engine) mounted on the vehicle body, an output shaft (PTO shaft) to rearwardly take power generated by the power supply apparatus, and a mount (three-point linkage mechanism) for attaching a working device (cultivator) to a rear portion of the vehicle body. Citation List Patent Literature PTL 1: Japanese Unexamined Patent Application Publication No. 2015-39319PTL 2: Japanese Unexamined Patent Application Publication No. 2016-15936 Summary of Invention Technical Problem In the working vehicle disclosed in PTL 1, a tank that houses a substance to be spread is located at an upper rear portion of the vehicle body, the tank being part of pieces of equipment of the working device. Thus, the height of the vehicle is increased due to the tank, and the position of the center of gravity of the vehicle is elevated, therefore, the stability of the vehicle may be reduced. The present invention has been made in consideration of the above-described problem, and it is an object to provide a working vehicle that can improve the stability of the vehicle by lowering the position of the center of gravity of the vehicle. In the working vehicle disclosed in PTL 2, a working device can be attached to a rear portion of the vehicle body via the mount provided rearward of the vehicle body. However, the working device cannot be attached to an upper portion of the vehicle body. The present invention has been made in consideration of the above-described problem, and it is an object to provide a working vehicle and a method of attaching a working device thereto, the working vehicle being configured to allow a working device to be attached to an upper portion of the vehicle body. Solution to Problem A working vehicle according to an example embodiment of the present invention includes a vehicle body, a traveling device to support the vehicle body such that the vehicle body is allowed to travel, and a working device to perform work, wherein the working device includes pieces of equipment located at opposite sides of the vehicle body from each other. The opposite sides of the vehicle body at which the pieces of equipment are located may be left and right sides of the vehicle body. The opposite sides of the vehicle body at which the pieces of equipment are located may be front and rear sides of the vehicle body. The pieces of equipment located at the opposite sides of the vehicle body from each other may have the same function. The pieces of equipment located at the opposite sides of the vehicle body from each other may have respective different functions. The working device may be a spreader to spread a liquid substance. The pieces of equipment may be tanks to store the liquid substance to be spread. The tanks may include a first tank and a second tank located at the opposite sides of the vehicle body from each other. The pieces of equipment of the working device may include batteries. The batteries may include a first battery and a second battery located at the opposite sides of the vehicle body from each other. The working vehicle may further include a support frame to support the pieces of equipment and attachable to and detachable from the vehicle body. The support frame may be located above the pieces of equipment. The working vehicle may further include a support frame to support the pieces of equipment and attachable to and detachable from the vehicle body. The support frame may be located below the pieces of equipment. The working vehicle may further include a frame structure provided at a periphery of the vehicle body and attached to the vehicle body. The frame structure may include a left frame located leftward of the vehicle body to extend in an up-down direction, a right frame located rightward of the vehicle body to extend in the up-down direction, and a lateral frame connecting the left frame and the right frame. The pieces of equipment may include a first piece of equipment located leftward of the left frame and a second piece of equipment located rightward of the right frame. The support frame may be configured to be attached to the vehicle body from above. The support frame may be configured to be attached to the vehicle body from front or rear. The working vehicle may further include a height changing mechanism to change a height of the vehicle body that is a distance of th