US-12618225-B1 - Working vehicle

US12618225B1US 12618225 B1US12618225 B1US 12618225B1US-12618225-B1

Abstract

A working vehicle includes an upper body having a device compartment, and a hydraulically operating working device, the device compartment being provided with an electric motor as a drive source of the working device, a driven device driven by the electric motor, a motor bracket supporting the electric motor, and a vehicle body-side bracket supporting the motor bracket, the motor bracket being installed to the vehicle body-side bracket via an anti-vibration support having an anti-vibration function and providing support, at two parts of a lower part and one part of an upper part, with at least two sets of the electric motor on one side of a predetermined direction and the driven device on the other side arranged one above the other.

Inventors

Hidaka Oyama
Keigo Kita

Assignees

TAKEUCHI MFG. CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20250702
Priority Date: 20250321

Claims (7)

1 . A working vehicle comprising an upper body having a device compartment, and a hydraulically operating working device, wherein the device compartment is provided with an electric motor serving as a drive source of the working device, a driven device driven by the electric motor, a motor bracket supporting the electric motor, and a vehicle body-side bracket supporting the motor bracket, and the motor bracket is configured to be installed to the vehicle body-side bracket via an anti-vibration support for supporting the electric motor with an anti-vibration function, at a predetermined part of a lower part that is at a relatively lower position in a vertical direction and a predetermined part of an upper part that is at a relatively upper position in the vertical direction, in a state where at least two sets of the electric motor arranged on one side of a predetermined direction and the driven device arranged on the other side of the predetermined direction are arranged at a relatively upper position in the vertical direction and a relatively lower position in the vertical direction.
2 . The working vehicle according to claim 1 , wherein the predetermined part of the lower part is two parts, and the predetermined part of the upper part is one part.
3 . The working vehicle according to claim 2 , wherein the anti-vibration supports at the three parts in total are arranged in the shape of an isosceles triangle in which the one part of the upper part is a vertex, in a plan view.
4 . The working vehicle according to claim 2 , wherein the anti-vibration supports at the two parts of the lower part are configured to be arranged below the electric motor on the one side of the motor bracket.
5 . The working vehicle according to claim 2 , wherein the anti-vibration support at the one part of the upper part is configured to be arranged above the driven device on the other side of the motor bracket.
6 . The working vehicle according to claim 1 , wherein the motor bracket has a Z-shape in a side view.
7 . The working vehicle according to claim 1 , wherein the vehicle body-side bracket has a cut-out part that allows entry of the motor bracket at an upper part that is at a relatively upper position in the vertical direction.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application is based upon and claims the benefit of priority of the prior Japanese Patent Application No. P2025-046389, filed on Mar. 21, 2025, and the entire contents of which are incorporated herein by reference. TECHNICAL FIELD The present invention relates to a working vehicle. BACKGROUND ART As an example of a working vehicle, a hydraulic excavator, a track loader or the like having a lower body with a traveling crawler or tire installed thereon, an upper body arranged above the lower body, and a working device installed at the lower body or the upper body and operating hydraulically (that is, with hydraulic oil having a predetermined pressure) is known according to the related art. Recently, a working vehicle having an electric motor instead of a traditional engine as a drive source of a working device has been developed (see JP-A-2023-23324). SUMMARY OF INVENTION Technical Problem In the working vehicle having the electric motor, for example, a configuration including a plurality of (two and so on) electric motors as the drive source is assumed in order to achieve a larger size and a higher output of the working device or for other reasons. Solution to Problem With respect to the above-described working vehicle, the present inventor has intensively studied the configuration including a plurality of (for example, two) electric motors, taking a configuration including one electric motor as the drive source, as a comparative example, and as a result, the following problems have become apparent. Normally, as the working vehicle becomes smaller, the space where a device is installed becomes narrower. Therefore, in the case of the configuration including two electric motors, the problem of it being difficult to horizontally arrange the electric motors has become apparent. Therefore, a configuration in which two electric motors are vertically arranged has been examined. Also, in the working vehicle according to the comparative example, a motor bracket that supports one electric motor is configured to be installed on the vehicle body side via an anti-vibration support (a member having an anti-vibration function and providing support, and in some cases, referred to simply as an “anti-vibration support” in the present application) at four parts on the lower side. However, as the result of an examination about the configuration in which two electric motors are vertically arranged with a similar installation structure, the problem of an increase in the vibration due to the operation of the vehicle at an upper part of the configuration, posing a risk that sufficient vibration isolation may not be able to be performed, has become apparent. Moreover, the problem of a reduction in workability in the case of assembling a driven device (hydraulic pump or the like) to the electric motor in the manufacturing line because of the narrow space where a device is installed in the vehicle body has become apparent. The present invention has been accomplished under the above-described circumstances and an object thereof is to provide a working vehicle that has a configuration in which at least two electric motors are arranged one above the other and that can enhance the anti-vibration property at the time of operation and can also enhance assemblability at the time of manufacturing. The present invention solves the above-described problems by a solution as described below as an embodiment. A working vehicle according to an embodiment is a working vehicle including an upper body having a device compartment, and a hydraulically operating working device, and the device compartment is provided with an electric motor serving as a drive source of the working device, a driven device driven by the electric motor, a motor bracket supporting the electric motor, and a vehicle body-side bracket supporting the motor bracket, and the motor bracket is configured to be installed to the vehicle body-side bracket via an anti-vibration support having an anti-vibration function and providing support, at a predetermined part of a lower part that is at a relatively lower position in a vertical direction and a predetermined part of an upper part that is at a relatively upper position in the vertical direction, in a state where at least two sets of the electric motor arranged on one side of a predetermined direction and the driven device arranged on the other side of the predetermined direction are arranged at a relatively upper position in the vertical direction and a relatively lower position in the vertical direction. Advantageous Effects of Invention In the working vehicle according to the embodiment, a configuration in which at least two electric motors are arranged one above the other can be employed. Also, the anti-vibration property at the time of operation of the vehicle can be enhanced. Moreover, assemblability at the time of manufacturing the vehicle can be enhanced. BRIEF DESCRIPTION OF DRAWINGS