JPH0616B2 - Grass box device in work machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a grass box device in a working machine.

(Prior Art) As a mowing and grass collecting work machine, there is one shown in Japanese Utility Model Application No. 59-167021, in which a mower is provided at the front part of the body of a small tractor, and an engine is provided behind the tractor seat. A bonnet covering the above is disposed, and a grass collection box for storing the grass cut by the mower is attached and fixed onto the bonnet.

(Problems to be Solved by the Invention) Therefore, in the above-described conventional art, it is not easy to completely open the inside of the bonnet by rotating the bonnet upward, and therefore the engine inside the bonnet is not easily opened. There was a problem that maintenance and inspection could not be performed easily.

It is an object of the present invention to provide a grass box device for a working machine that can solve the above problems.

(Means for Solving the Problems) In order to solve the above problems, the means adopted by the present invention are
On the rear part of the seat 5, a bonnet 10 covering the engine 6 and the like,
A support frame 19 extending rearward of the hood 10 is provided, and a grass collection box 4 for storing cut grass is provided at the rear end of the support frame 19 so as to be rotatable around a horizontal axis 25 in the left-right direction. The grass collection box 4 is made substantially horizontal above the bonnet 10 and is in a posture for storing the cut grass. The point is that lock means is provided for releasably locking the grass collection box 4 in the cut grass storage position.

(Operation) During the grass collection work, the grass collection box 4 is locked in the cut grass storage posture.

When performing maintenance and inspection of the engine 6 and the like inside the bonnet 10, the grass box 4 is unlocked and the grass box 4 is set upright.

Then, by rotating the bonnet 10, etc.,
10 Open the inside.

(Embodiment) A first embodiment of the present invention will be described below with reference to the drawings.
FIGS. 3 to 3 show a mowing and grass collecting work machine, a tractor 1 shown as an example of a traveling vehicle, and a mounting device at a front portion of the tractor 1.
A front mower (3) mounted so as to be able to move up and down via (2), a grass box (4) provided at the rear of the tractor (1), and the like.

The vehicle body 5 of the tractor 1 is an engine 6 located at the rear of the vehicle body 5.
And a clutch housing 7 and a transmission case 8 projecting forward from the engine 6, a rear axle frame 9 projecting rearward from the engine 6, and the like.

A bonnet 10 covers the engine 6, the radiator 11, the air cleaner 12, and the fuel tank 13 in an openable and closable manner, and the lower rear end thereof is rotatably provided on the vehicle body 5 by a horizontal shaft 14 in the left-right direction.

The radiator 11 is erected on the rear axle frame 9, and the fuel tank 13 is arranged on the rear portion of the mission case 8.

Reference numeral 15 is a steering wheel, which is provided at the front end of the vehicle body 5 and has a steering wheel 1
A seat 16 is arranged between the 5 and the hood 10.

17 is a front wheel and 18 is a rear wheel.

Reference numeral 19 denotes a support frame, which has a pair of left and right horizontal frames 20, a front portion of which is provided along both left and right sides of a rear portion of the vehicle body 5, a rear portion of which extends rearward of the bonnet 10 and which is inclined rearwardly. .

Reference numeral 21 denotes a mounting frame, which has a pair of left and right lateral frames 22 and a front frame 23 that connects the front end portions of both lateral frames 22. The front portion of the lateral frame 22 is located outside the left and right corners of the upper part of the bonnet 10. The inclined portion 24 is disposed obliquely on the upper side, and the rear portion of the inclined portion 24 extends rearward of the bonnet 10 to form a rearward and downward inclined shape.
The rear end of 24 is the support frame 19.
It is pivoted by 25.

By the way, a pair of left and right standing tubes 26 located on both left and right sides of the bonnet 10 are erected from both left and right sides of the horizontal frame 20 of the support frame 19, and correspondingly, the mounting frame
From the left and right sides of the front portion of the horizontal frame 22 of 21, a lower cylinder 27 that is loosely inserted into a standing cylinder 26 is provided.

A fixed plate 28 is provided at the lower end of each lower cylinder 27, and a fixed lever 29 is provided at the upper end of each standing cylinder 26. The fixed lever 29 swings or the fixed plate 28 is provided. The fixing lever 29 is disengageably engaged with the fixing plate 28 by an inserting / removing operation with respect to the mounting frame 21 so that the mounting frame 21 is releasably fixed to the support frame 19 in the posture shown in FIG.

The grass collection box 4 is horizontally arranged above the bonnet 10 and stores the grass mowed by the mower 3.The main body 30 has a rear end opening, and the rear end opening of the main body 30 is openable and closable. And a lid body 31 for covering.

The main body 30 has frame portions 32 on the front and lower edges on both the left and right sides thereof, and the rear portions of the frame portions 32 on the left and right sides are attached to the inclined portions 24 on both the left and right sides of the mounting frame 21 in the horizontal transverse direction. It is pivoted by 33.

As shown in FIG. 1, the grass box 4 is rotated about the upper horizontal axis 33 so that the grass box 4 is horizontal above the bonnet 10 and is in a position for storing grass, as shown in FIG. As shown in the drawing, the posture can be freely changed from the cut grass storage posture to the cut grass discharge posture in which the grass cutting box 4 is rotated upward so that the rear end of the grass collection box 4 is downward to discharge the cut grass in the grass collection box 4. The grass collecting box 4 is provided with a stopper 34 at the rear end of the support frame 19 when the grass is discharged.
Get in touch with.

Reference numeral 35 is an operation lever for changing the posture of the grass box, and as shown in FIG. 4, it is provided with a pin 36 at the lower part of the front part of the frame portion 32 on one side and extends to the vicinity of the side of the seat 16. Has been done.

The operating lever 25 is composed of a leaf spring, or
By making the structure of the connection part with the pin 36 special, it can be swung to the left and right.

As shown in FIG. 5, a lock rod 37 extends inward from the front portion of the operating lever 35, and extends forward from the lower end of the front portion of the frame portion 32.

The lock rod 37 is provided in the frame portion 32 so as to be movable left and right via a bracket 38, and a spring 39 wound around the middle portion thereof.
Is urged outward by.

A round bar-shaped lock piece 40 is fixed to the inner end of the lock bar 37, and the lock piece 40 is engaged with and disengaged from an engagement recess 42 of an engagement piece 41 projecting from the front frame 23 of the mounting frame 21. By being freely engaged, the grass box 4 is releasably locked in the cut grass storage posture. The upper inner edge of the engagement piece 41 has an inclined portion 43.
Thus, the lock piece 40 is guided when engaging the engaging recess 42 of the engaging piece 41 from above.

In addition, the engagement and disengagement of the lock piece 40 with respect to the engagement piece 41 is performed by the operation lever.
It is performed by swinging 35 in the left-right direction.

Also, lock the operating lever 35 as described above, and
When the grass collecting box 4 is rotated about the lower horizontal shaft 25 by the operation lever 35 in a state where the fixing of the 29 and the fixing plate 28 is released, the grass collecting box 4 has the above-mentioned cut grass storage posture, and FIG. As shown in, the posture can be freely changed to an upright posture in which the hood 10 and the mounting frame 21 are substantially upright.

The contact between the stopper 34 and the mounting frame 21 prevents the grass box 4 from rotating further rearward from the standing posture.

The lid body 31 is rotatably supported on the upper portion of the rear end portion of the main body 30 by a horizontal support shaft 44, and the interlocking rod 46 is pivotally connected to a pair of left and right interlocking levers 45 provided on the upper portion of the lid body 31. There is.

Each of the interlocking rods 46 is fixedly inserted through a bracket 47 so as to be movable and adjustable, and each of the brackets 47 is rotatably connected to a middle portion of the frame 32 on both left and right sides.

With the bracket 47, the interlocking rod 46, and the interlocking lever 45, as shown in FIG. 2, when the posture of the grass box 4 is changed from the cut grass storage posture to the cut grass discharge posture, the lid body 31 is interlocked with it. It can be released.

The blower 48 feeds the grass cut by the mower 3 to the grass box 4, and ducts 49, 50 are provided to the mower 3 and the grass box 4, respectively.
Are connected via.

According to the embodiment configured as described above, when performing the mowing / grassing work by the mowing / grass collecting machine, the grass collection box 4 is set in the mowing storage posture shown in FIG. The grass is fed to the grass box 4 through the ducts 49 and 50 and the blower 48.

When discharging the grass from the grass box 4, the duct 50
Is removed from the grass box 4, the operation lever 35 is swung inward from above the seat 16, the lock piece 40 is disengaged from the engagement recess 42 of the engagement piece 41, and in this state, the operation lever is moved from above the seat 16. By 35, the grass box 4 is rotated about the lower horizontal shaft 25 to have the grass cutting position shown in FIG.

As a result, the lid 31 is rotated rearward through the interlocking rod 46 and the like, the rear end opening of the main body 30 is opened, and the grass is discharged from the inside of the grass collecting box 4.

Further, when performing maintenance and inspection of the engine 6 and the like inside the bonnet 10, the duct 50 is removed from the grass box 4 and the fixation between the fixing lever 29 and the fixing plate 29 is released.

Then, with the operation lever 35 locked to the attachment frame 21, the operation box 35 rotates the grass box 4 around the lower horizontal shaft 25 from the seat 16 to the upright posture.

Next, release the fixing of the hood 10 to the car body 5,
If you rotate the bonnet 10 about the horizontal axis 14,
As shown by the phantom line in FIG. 3, the 10 can be rotated until it hits the grass box 4, and can be tilted backward, and the inside of the bonnet 10 can be completely opened.

Therefore, maintenance and inspection of the engine 6 and the like inside the bonnet 10 can be easily performed.

(Effects of the Invention) As described in detail above, according to the present invention, by setting the grass box in the standing posture, the inside of the bonnet can be easily opened, and maintenance and inspection of the engine inside the bonnet can be facilitated. You can do it. The present invention has the above advantages and is of great benefit.

[Brief description of drawings]

The drawings show one embodiment of the present invention. Each of FIGS. 1 to 3 is a side view showing different operating states, FIG. 4 is a plan view of a locking means of an operating lever, and FIG. It is the sectional view on the AA line arrow of a figure. 1 ... tractor, 4 ... grass box, 5 ... car body, 6 ... engine, 10 ...
Bonnet, 19 ... Support frame, 25 ... Lower horizontal axis.

Claims (1)

[Claims] 1. A bonnet 10 covering the engine 6 and the like and a support frame 19 extending rearward of the hood 10 are provided at the rear of the seat 5, and the cut grass is stored at the rear end of the support frame 19. A grass collection box 4 is provided rotatably around a horizontal axis 25 in the left-right direction, and the grass collection box 4 is substantially horizontal above the bonnet 10 and is in a grass-cutting storage attitude. In a working machine characterized by being capable of changing its posture to a substantially vertical standing posture behind the bonnet 10 and provided with a lock means for releasably locking the grass box 4 in the cut grass storage posture. Grass box device.