PLATFORM STRUCTURE OF ELECTRICALLY-DRIVEN TRACTOR

Abstract

The present invention relates to a platform structure of an electrically-driven tractor that can work while stably maintaining the center of gravity, the platform structure comprising: a front wheel part and a rear wheel part for transmitting power by 4-wheel driving; a cabin installed between the front wheel part and the rear wheel part and installed to enable a worker to ride thereon; a battery part for supplying power to the electrically-driven tractor; an hydraulic system for driving a working machine; and a three-point hitch installed at the rear of the hydraulic system to allow the working machine to be attached thereto.

Claims

1. A platform structure of an electrically-driven tractor that can work while stably maintaining the center of gravity, comprising: a front wheel part and a rear wheel part that transmit power by 4-wheel driving; a cabin installed between the front wheel part and the rear wheel part and installed to enable a worker to ride thereon; a battery part for supplying power to the electrically-driven tractor; an hydraulic system driving a working machine; and a three-point hitch installed at the rear of the hydraulic system to allow the working machine to be attached thereto.

2. The platform structure of claim 1, wherein the cabin is installed at an upper frame (not shown) installed between the battery part and the hydraulic system.

3. The platform structure of claim 1, wherein a radiator for cooling the battery part is installed at the front of the battery part, the front wheel part and the rear wheel part are composed of a front wheel driving motor and a rear wheel driving motor, and the front wheel driving motor and the rear wheel driving motor has a front wheel driving transmission and a rear wheel driving transmission connected thereto, respectively, and the three-point hitch is installed at the rear of the hydraulic system so that the working machine can be attached.

4. The platform structure of claim 1, wherein the hydraulic system is driven by the rear wheel driving motor.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0021] FIG. 1 is a conceptual view of a platform structure of the present disclosure.

[0022] FIG. 2 is a conceptual view of the structure of a front wheel part and a rear wheel part of the present disclosure.

[0023] FIG. 3 is a conceptual view of a vehicle lower frame structure of the present disclosure.

[0024] FIG. 4 is a conceptual view of a structure in which the front wheel part and the rear wheel part of the present disclosure are coupled to the vehicle lower frame structure.

[0025] FIG. 5 is a conceptual view of a structure in which a battery part is coupled to that shown in FIG. 4.

DESCRIPTION OF EMBODIMENTS

[0026] In the description n of the present disclosure, technical configurations the same as the related art are given the same names.

[0027] The present disclosure relates to a platform structure of an electrically-driven tractor that can work while stably maintaining the center of gravity, comprising: a front wheel part 10 and a rear wheel part 20 that transmit power by 4-wheel driving; a cabin 30 installed between the front wheel part 10 and the rear wheel part 20 and installed to enable a worker to ride thereon; a battery part 40 for supplying power to the electrically-driven tractor; an hydraulic system 50 for driving a working machine; and a three-point hitch 70 installed at the rear of the hydraulic system 50 to allow the working machine to be attached thereto. These components are described hereafter with reference to the drawings.

Front wheel part (10), Rear Wheel Part (20), and Cabin (30)

[0028] The front wheel part 10 and the rear wheel part 20 of the present disclosure, as shown in FIG. 1 to FIG. 5, are substantially the same as the configuration of common tractors.

[0029] However, the front wheel part 10 and the rear wheel part 20 of the present disclosure are different from those driven by an engine in the related art in that they drive a front wheel axle 13 and a rear wheel axle 14 through a front wheel driving motor 11, a front wheel transmission 12, a rear wheel driving motor 12, a rear wheel transmission 22 to be described below.

[0030] The cabin 30 of the present disclosure is also substantially the same as the configuration of common tractors.

[0031] However, it is preferable that the cabin 30 is installed between the battery part 40 and the hydraulic system 50 to be described below. In this case, the cabin 30 is fixedly installed at an upper frame (not shown) separately installed between the battery part 40 and the hydraulic system 50.

[0032] In the present disclosure, as described above, the front wheel driving motor 12 and rear wheel driving motor 22 are installed at the front wheel part 10 and the rear wheel part 20, respectively, thereby securing a battery space at the upper space.

Battery Part (40)

[0033] The battery part 40 of the present disclosure is a common fuel cell battery and is composed of multiple battery cells.

[0034] The battery part 40 is relatively heavy in the platform structure of the present disclosure, so it is preferable to install the battery part 40 at an upper side of a vehicle lower frame P and at the front side of the cabin 30.

[0035] A battery control module 41 is installed at the upper side of the batter part 40 at the front side of the cabin 30. The battery control module (battery management system (BMS)) 41 manages charging and discharging of a battery of the electrically-driven tractor of the present disclosure in accordance with the driving state. That is, the battery control module 41 performs data communication with the battery and controls general matters of the battery such as temperature, current, and a charging state.

Hydraulic System (50)

[0036] The hydraulic system 50 of the present disclosure is composed of a three-point hitch 70 for a working vehicle installed at the rear of the tractor and an hydraulic pump, an hydraulic motor, and various valves for driving a steering system, and is substantially the same as the configuration of common tractors.

[0037] However, the hydraulic system 50 of the present disclosure is different from an hydraulic system 50 of the related art in that it receives power from the rear wheel driving motor 12 installed at the rear wheel part 20.

[0038] Further, the three-point hitch 70 is installed to attach/detach a working machine to/from the tractor and is installed in accordance with International Standards (ISO11783).

Radiator 60

[0039] The radiator 60 of the present disclosure is installed at the front of the battery part 40 and cools the battery part 40.

[0040] Since the working speed of tractors are very low in comparison to common vehicles, it is advantageous to install the radiator 60 at the front part of a tractor for maximum heat exchange, so the radiator 60 is installed at the front of the battery part 40.

[0041] Further, the radiator 60 cools not only the battery part 40, but also working fluid (transmission oil, etc.).

[0042] The above description is provided as an example of the present disclosure, and the embodiments described herein are provided to describe the present disclosure rather than limiting the spirit of the present disclosure, so the present disclosure may be changed and modified in various ways by those skilled in the art without departing from the scope of the present disclosure.

[0043] For example, the present disclosure is applied to an electrically-driven tractor T in the embodiment described above, but the present disclosure can be applied not only to the electrically-driven tractor T, but common agricultural machines such as a tractor and other electric vehicles.

[0044] Therefore, the protective range of the present disclosure should be construed by those described in claims and technical configuration in the equivalent range should also be construed as being included in the scope of the present disclosure.

Reference Signs List

[0045] 10: Front wheel part [0046] 11: Front wheel driving motor [0047] 12: Front wheel transmission [0048] 13: Front wheel axle [0049] 20: Rear wheel part [0050] 21: Rear wheel driving motor [0051] 22: Rear wheel transmission [0052] 23: Rear wheel axle [0053] 30: Cabin [0054] 40: Battery part [0055] 41: Battery control module [0056] 50: Hydraulic system [0057] 60: Radiator [0058] 70: Three-point hitch [0059] P: Vehicle lower frame