JPH01204823A - Farming dolly - Google Patents

Abstract

PURPOSE:To dispense with an expensive universal joint, and to facilitate assembly by connecting a front wheel differential gear connected to the lower part of an engine and an output shaft under a transmission case with a transmission shaft, and mounting a frame member on a body frame. CONSTITUTION:Respective constituent parts such as an engine 5, a main clutch housing 6, a transmission case 7 and a gearing mechanism 8 for transmitting power in the longitudinal direction, or the like are connected in this order in the front and rear direction of the body. Further, a front wheel differential gear 11 is connected to the lower part of the engine 5, and this differential gear 11 and an output shaft 9 at the underside of the gearing mechanism 8 are connected by a transmission shaft 10. And a prime mover unit A is constituted by the above respective constituent parts 5-8, and 11. On the other hand, the engine 5 and the frame member 20 of the gearing mechanism 8 are mounted on a body frame 24 via a vibration isolating elastic body 23. Thus, power can be transmitted by the one transmission shaft 10, and the assembly of the prime mover unit A can be facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transport vehicle, and more particularly to the structure of the body of a front-wheel drive transport vehicle.

[Conventional technology]

As the above-mentioned conventional transport vehicle, for example,
As shown in Japanese Patent No. 163428, the engine, the main clutch housing, the transmission case, and the transmission case are integrally connected and fixed, and only the engine part is connected and supported on the fuselage frame via an elastic body, and the transmission case It was designed to be interlocked and connected to the front wheel differential fixed to the fuselage frame via a universal joint and a connecting shaft.

[Problem to be solved by the invention]

The above conventional structure improves driving comfort by preventing engine vibrations from being transmitted to the driver's seat via the aircraft frame, and also ensures smooth power transmission to the front wheel differential even when the engine vibrates. However, the universal joint is an expensive part that requires highly accurate machining, which increases parts costs and requires that the engine, main clutch housing, transmission case, and transmission case be integrated into one unit when assembling the aircraft. After assembling and connecting and fixing the front wheel differential to the fuselage frame, the assembled unit must be mounted and connected on the fuselage frame, and after the front wheel differential is connected and fixed to the fuselage frame, they must be connected using a universal joint. The ease of assembly is low.
In addition, there is a drawback that the number of assembly steps becomes large, further increasing the cost. Moreover, since the assembly unit is supported on the fuselage frame only by the engine section, stress tends to concentrate on the connecting parts of the mission case and transmission case, which are cantilevered to the engine. In order to increase the strength of transmission cases and transmission cases, especially their connecting parts, they have become thicker or larger, resulting in an increase in weight.

An object of the present invention is to provide an agricultural transport vehicle that enables cost reduction and has a stable and strong support structure.

[Means to solve the problem]

A feature of the present invention is that the engine, the main clutch housing transmission case, and the transmission mechanism that transmits power in the longitudinal direction are connected and fixed in the longitudinal direction of the aircraft in that order, and the front wheel differential is connected and fixed to the lower part of the engine. , a driving unit in which the differential device and the output shaft on the lower side of the transmission mechanism are interlocked and connected by a transmission shaft, and each of the engine, main clutch housing, transmission case, transmission mechanism, and front wheel differential device is fixed integrally. The frame members of the engine and the transmission mechanism are mounted and connected to the fuselage frame via a vibration-proofing elastic body, and their functions and
The effects are as follows.

[For production]

In other words, since the engine, main clutch housing, transmission case, transmission case, and front wheel differential are each integrally fixed, the transmission case connecting the output shaft of the transmission case and the front wheel differential The shaft is installed in a fixed position, making it possible to transmit power with a single transmission shaft without using a universal joint.

Moreover, when assembling the fuselage, the driving unit is assembled in advance and then mounted and connected on the fuselage frame, so the efficiency of the assembly work is improved and the number of assembly steps can be reduced.

Since the engine on the front side and the frame member of the transmission case on the rear side connect and support the aircraft frame, it can be stably supported over a long span, eliminating structurally unstable cantilevered parts. It is.

〔Effect of the invention〕

Therefore, according to the present invention, it is possible to reduce the cost of parts and the number of assembly steps, thereby making it possible to reduce costs. Moreover, it has become possible to stably and firmly mount and connect the driving unit to the aircraft frame.

〔Example〕

FIG. 4 shows a transport vehicle according to the present invention.

This transport vehicle has a pair of left and right wheels (one pair at the front and rear of the aircraft).
), (2), and has a driving part (3) at the front of the fuselage and a loading platform (4) at the rear. wheels (1),
It is configured as a four-wheel drive type in which transmission is transmitted to (1) and rear wheels (2), respectively. That is, the power of the engine (5) is transmitted through the main clutch housing (6), the transmission case (7), and the belt-type transmission mechanism (8), which are connected and fixed in sequence to the rear of the engine (5). Transmission shaft (lO) from the output shaft (9) of the transmission mechanism (8) to the front side
The transmission is transmitted to the front wheel differential (11) via the universal joint (
12), (12) and a connecting shaft (13) to transmit the signal to a rear wheel differential (14) to perform four-wheel drive.

As shown in FIG. 1, the transmission mechanism (8) includes a drive pulley (16) fixed to a drive shaft (15) extending from the rear end of the transmission case (7), and a Three transmission belts (18) are wound and tensioned across an output shaft (9) provided on the side and a driven pulley (17) fixed to the drive pulley (17) to transmit power in the vertical direction. Axis (15
) and a bearing member (19) that supports the output shaft (9) in free rotation.
) and (19) are each fixedly supported by a frame member (20) to apply tension to the belt, and the upper side of this frame member (20) is connected and fixed to the transmission case (7). On the other hand, a cylindrical frame (10) surrounding the transmission shaft (10) extends between the lower bearing member (19) and the support member (21) fixed to the front wheel differential (11).
22) are constructed and connected.

Then, the front wheel differential (11) is connected and fixed to the lower part of the engine (5) via the connecting member (29), and the differential (
The input shaft of 11) and the output shaft of the transmission mechanism (8) are arranged on the same axis, and are interlocked and connected so that the transmission shaft (10) is in a fixed position. Housing (6), mission case (7), transmission mechanism (8)
and a front wheel differential (11) are integrally fixed to form a driving unit (A). The frame member (20) of the engine (5) on the front side and the transmission mechanism (8) on the rear side of this power unit (A) is connected via a vibration-proofing elastic body (23) made of, for example, rubber. It is mounted and connected on the fuselage frame (24). To be more specific, as shown in FIG.
Airframe frames (24), (2) extending in the longitudinal direction
4) Mounted and connected on top. Also, as shown in Figure 2,
Support arms (
25), (25) extends outward, and
Cantilevered frames (26), (26) are extended inwardly from the left and right fuselage frames (24), (24), respectively, and the support arms (25), (25) are connected to the cantilevered frames (26), (26), respectively. 26) and (26) along the vertical direction through the elastic bodies (23) and (23).
7) are connected.

In this way, the driving unit (
A) is stably supported with respect to the fuselage frame (24),
In addition, by attaching and fixing the elastic body (23) in the compression direction, strong support can be achieved. Also, transmission mechanism (8)
The cylindrical frame (22) receives and supports the drive reaction load in the differential (11) at the connecting portion between the front wheel differential (11) and the front wheel differential (11).

[Another example]

As shown in FIGS. 5 and 6, the frame member (2
The support arms (25a), (2) are mounted in a U-shape in plan view so that the mounting connection structure of (0) is directed rearward from approximately the upper and lower middle portions of the frame member (20), and bypasses the transmission belt (18).
5a) and this support arm (25a).

(25a) on the left and right fuselage frames (24)
), horizontal stay (28) connected horizontally to (24)
It may be configured such that it is mounted and connected to the top via an elastic body (23).

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawings show an embodiment of the agricultural transport vehicle according to the present invention, in which Fig. 1 is a cutaway side view of the main parts, Fig. 2 is a longitudinal cross-sectional rear view of the rear mounting section, and Fig. 3 is a longitudinal cross-sectional rear view of the front mounting section. , FIG. 4 is an overall side view, FIG. 5 is a side view of a main part of another embodiment, and FIG. 6 is a longitudinal cross-sectional rear view of a rear mounting section of another embodiment. (5) Engine, (6) Main clutch housing, (7) Mission case, (8) Transmission mechanism, (11 )・・・・・・
- Front wheel differential, (20)...Frame member, (23)...Elastic body, (24)...
Airframe frame, (A)...Motor unit.

Claims (1)

[Claims] Engine (5), main clutch housing (6), transmission case (7), and transmission mechanism (8) that transmits power in the longitudinal direction.
) are connected and fixed in the longitudinal direction of the aircraft in that order, and a front wheel differential (11) is installed at the bottom of the engine (5).
are connected and fixed, and this differential device (11) and the transmission mechanism (
8) The lower output shaft (9) is interlocked with the transmission shaft (10), and the engine (5) and the main clutch housing (6)
), a transmission case (7), a transmission mechanism (8), and a front wheel differential (11) constitute a power unit (A) that is integrally fixed to the engine (5) and the transmission mechanism (8). ) of the frame member (20) of the vibration isolating elastic body (
The agricultural transport vehicle is mounted on and connected to the body frame (24) via 23).