JP2571780Y2 - Agricultural truck - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle for agricultural work.

[0002]

2. Description of the Related Art Conventionally, as one form of a transportation truck for agricultural work,
Between the pair of left and right traveling parts, the aircraft frame is horizontally mounted, and the loading platform is placed on the aircraft frame so as to be able to move up and down via the lifting link mechanism, enabling both transporting on the road and in the field In some cases, the loading platform is raised and lowered as appropriate to facilitate the work of loading and unloading the load on the loading platform.

[0003]

However, the above-mentioned agricultural work transport vehicle has the following disadvantages. That is, when the lifting / lowering link mechanism is operated and the body frame is raised and the loading / unloading operation of the load on the loading platform is performed, when the oil leaks from the lifting / lowering cylinder or the motor is stopped, the lifting / lowering link is stopped. There is a danger that the mechanism will fall, and the work cannot be performed smoothly. In addition, since the worker is working on the bed, dropping the bed is very dangerous.

[0004] An object of the present invention is to provide an agricultural work transport vehicle capable of solving the above-mentioned problems.

[0005]

According to the present invention, an upper vehicle body having a driving unit, a prime mover, and a carrier is integrally provided immediately above a pair of right and left traveling units. A pair of left and right lifting mechanisms consisting of lifting links are interposed between the left and right sides of the upper body so that the upper body can be moved up and down on a pair of left and right traveling parts, and at the position directly below the upper body. A truck for agricultural work is provided, in which a space communicating in the front-rear direction is formed between a pair of left and right traveling parts, and a lock mechanism for preventing a lowering of the upper body is provided at a lifting link of the lifting mechanism. Is what you do.

In the lock mechanism, one end of a longitudinal stopper rod may be pivotally connected to one of the lifting links, and the other end of the rod may be engaged with the other lifting link. Features.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. In the entire side view of FIG. 1, A indicates a farm work carrier according to the present invention, and the carrier A is a pair of right and left crawler-type trucks. A body frame 2 as an upper vehicle body is disposed directly above the traveling unit 1, and a pair of right and left elevating mechanisms 3 is interposed between the frame 2 and both traveling units 1. , A prime mover 4 is provided on the front left side, an operation unit 5 is provided on the front right side, and a loading platform 6 is provided on the rear side.

As shown in FIGS. 1 and 2, the lifting mechanism 3 includes scissor-type lifting links 3a, 3a, 3b, respectively.
Lifting hydraulic cylinder 15 and lifting link 3b
8 attached to the front lower end of the roller via a roller support shaft 8a
While being lifted up from the traveling frame 1a and rollably and loosely fitted on a roller guide portion 10 of a link support frame 9 formed by extending directly above the traveling portion 1 while the lifting link
The lower rear end of 3a, 3a is pivoted to the rear of the link support frame 9.
It is pivotally supported by 11.

Further, at the front upper end of the lifting links 3a, 3a,
The roller 12 mounted via the roller support shaft 12a is rotatably fitted to a roller guide portion 13 provided at the front portion of the vehicle body frame 2, while the rear upper end of the lifting link 3b is fitted to the rear portion of the vehicle body frame 2. Pivotally supported by a pivot 14 and a lifting link
An elevating hydraulic cylinder 15 is interposed between the link support frame 9 and the middle part of 3a, 3a, 3b.

In this way, the body frame 2 interposed between the pair of right and left traveling parts 1 is raised and lowered by the lifting mechanism 3 so that the ground height of the body frame 2 can be adjusted, and
A pair of right and left traveling parts 1 are located immediately below the body frame 2.
A space S communicating in the front-rear direction is formed between the vehicles 1 so that the vehicle body frame 2 does not hit the crops such as vegetables on the ridge when the agricultural work vehicle A runs across the ridge.

As shown in FIGS. 1 and 2, front and rear stays 20 and 21 are provided at the front end and the rear end of the left and right link support frames 9, respectively. The front connection frame 22 is inserted between the upper ends of the unit stays 20 and horizontally traversed, while the rear connection frame 23 is inserted between the upper ends of the left and right rear stays 21 and horizontally laid. , 23, the left and right distance between the pair of right and left running parts 1 can be slidably adjusted, so that the running part 1 can reliably straddle the ridge without breaking the ridge.

In the present invention, in the agricultural work carrier having the above-described configuration, the lifting mechanism 3 is provided with a lock mechanism 24 for preventing descent. Hereinafter, the lock mechanism 24 will be described in detail. That is, the lock mechanism 24 is, as shown in FIGS.
Of the scissor-type lifting links 3a, 3b, a pivot pin 25 is erected in the middle of the left and right lifting links 3a, 3a, and the base end of the stopper rod 26 is pivotally connected via the pin 25, A substantially U-shaped stopper receiving portion 27 is mounted on the upper surface of the central lifting link 3b, and the distal end portion of the stopper rod 26 is engaged with the stopper receiving portion 27.

A rotatable rotary cylinder 28 is mounted on the pivot pin 25, a stopper rod 26 extends from the center of the cylinder 28, and the rod 26 is moved up and down in the right and left directions. It is located between the links 3a, 3a so as to abut on the central lifting link 3b. In FIG. 4, reference numeral 29 denotes a leaf spring-type storage fixture for the stopper rod 26.

With this configuration, when the loading platform 6 is moved up and down to load and unload a load, the lifting hydraulic cylinder is used.
When the lifting platform 3 is lifted up to lift the lifting links 3a and 3b and lift the loading platform 6, the stopper rods 26 provided on the left and right lifting links 3a are rotated, and the ends thereof are moved to the central lifting link 3b. Engages with the stopper receiving portion 27 provided on the upper surface of
The lowering of the lifting links 3a and 3b can be prevented, and the loading platform 6 can be maintained in an elevated state.

FIGS. 6 and 7 show another embodiment of the lock mechanism 24 of the elevating mechanism 3, and the structure thereof will be described in detail below. First, in this embodiment, as shown in FIGS. 2 and 7, the front portion of the central lifting link 3b is provided with left and right roller support shafts 8a protruding from the front end of the link 3b. The roller 8 is attached to 8a. Further, the link support frame 9 is provided with left and right roller guides 10 at a fixed interval, and the rollers 8 are loosely fitted on the guides 10 so as to freely roll.

At the front side of the central lifting link 3b, the base end of a longitudinal stopper rod 26 is pivotally mounted on the upper surface via a pivot pin 25, and the front end of the link support frame 9 is The distal end portion is engaged with the stopper receiving portion 27 provided. Reference numeral 28 denotes a rotating cylinder provided at the base end of the stopper rod 26.

Further, in this embodiment, a leaf spring type stopper fixing device 30 is provided in the middle of the elevating link 3b.
The stopper rod 26 is turned around the turning cylinder 28, fixed by the same fixture 30, and stored.

[0018]

[Effects of the Invention] In the present invention, when loading and unloading a load by moving the upper body up and down, when the lifting hydraulic cylinder is extended, the lifting link is lifted and the upper body is raised, Rotate the stopper rod provided on the lifting link and engage the tip of the stopper rod with the other lifting link to prevent the scissor-type lifting link from lowering and keep the upper vehicle body in the raised state By doing so, the work can be performed smoothly, and the work can be performed safely even if the operator gets on the upper vehicle body. Moreover, on the upper body, the driving unit, the prime mover and the carrier are provided integrally,
The upper body can be raised on a pair of left and right running parts, so that the upper body does not hit the vegetables etc. on the ridge even when the body is run across the ridge of the field etc. In addition, even when the vehicle body travels for a long time in such a state, the lowering of the upper vehicle body can be prevented by the locking mechanism, and the vehicle body can travel smoothly and reliably. In addition, when the upper vehicle body is lowered, the position of the center of gravity of the vehicle body can be lowered, and stable work on an inclined ground or the like can be ensured.

[Brief description of the drawings]

FIG. 1 is an overall side view of an agricultural work vehicle according to the present invention.

FIG. 2 is an explanatory view showing a lifting mechanism.

FIG. 3 is an explanatory view showing a lock mechanism of the elevating mechanism.

FIG. 4 is a sectional view of a lock mechanism.

FIG. 5 is a plan view of a lock mechanism.

FIG. 6 is an explanatory view showing another embodiment of the lock mechanism.

FIG. 7 is an explanatory plan view of the lock mechanism.

[Description of sign]

 A Agricultural work vehicle 1 Running section 2 Body frame 3 Elevating mechanism 6 Loading platform 24 Lock mechanism 26 Stopper rod

Claims (2)

(57) [Scope of request for utility model registration] 1. Immediately above a pair of left and right running parts (1) (1).
In addition, the operation part (5), the motor (4) and the carrier (6) are integrated.
The upper vehicle body is provided and both running parts (1)
A lifting link (3) is provided between (1) and the left and right sides of the upper body.
a) A pair of left and right elevating units consisting of (3a), (3b), and (3b)
A pair of right and left traveling parts (1) with the mechanisms (3) and (3) interposed
(1) The upper body can be moved up and down freely, and the upper body
Right below the body, between the pair of left and right running parts (1) (1)
It forms a space (S) communicating with the longitudinal direction of Te, the lifting link of the same lifting mechanism (3) (3a) (3b ) is
A transport vehicle for agricultural work, comprising a lock mechanism (24) for preventing the upper body from lowering. 2. The lock mechanism (24) pivotally connects one end of a longitudinal stopper rod (26) to one lifting link (3a), and connects the other end of the rod (26) to the other end. Lifting link (3b)
The agricultural work transport vehicle according to claim 1, wherein the transport vehicle is configured to be engageable with the agricultural work.