JPS6319254Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a bonnet opening/closing device for an agricultural tractor.

(b) Conventional technology Conventionally, in the bonnet of a tractor,
It is known that a part of the side plate is made into a long strip in the front-rear direction so that only the strip-shaped side plate can be removed.

For example, as in Japanese Utility Model Application Publication No. 154276/1983.

However, this prior art is configured to open and close both the middle side plate and the upper side plate at the same time.

(c) Problems that the invention aims to solve The bonnet of a tractor houses the engine located inside and serves as a safety cover to ensure safety from the outside, as well as to effectively use the wind from the radiator installed inside the engine. It serves as an air channel for blowing air into the radiator, and also serves as a seal to eliminate suction from other sources than the front of the radiator.

Conventionally, the bonnet was opened and closed by rotating the entire bonnet around the lower part of the front end, and the inside of the bonnet was opened and closed for repair and inspection. I was conducting a repair inspection.

However, if the bonnet was made easier to open and close for repairs, the degree of sealing would deteriorate, and if the degree of sealing was improved, it would take more time to open and close the bonnet for repairs.

In the former case, since the entire bonnet is rotated to open and close, the seal after closing is incomplete, causing problems such as radiator air leaking or radiator air being sucked in from areas other than the front panel. It is.

Furthermore, in the latter case, since the entire side plate of the bonnet is removed, it is necessary to lift it up and tighten the bolts when closing the bonnet, making installation and removal difficult.

In order to solve this problem, the present invention divides the side plate of the bonnet into three parts: the upper side plate, the middle side plate, and the lower frame plate, and makes it possible to easily rotate and remove only the middle side plate, thereby making it possible to repair the inside of the bonnet. This makes inspection easier and improves the degree of sealing by preventing other parts from being attached or detached.

(d) Means for solving the problem The purpose of the present invention is as described above, and the configuration for achieving the purpose will now be explained.

The side plates of the bonnet are composed of upper side plates 2L, 2R, middle side plates 3L, 3R, and lower frame plates 9L, 9R.
0, the rear end is supported and fixed to the dart board support column 31, and the middle side plates 3L, 3R are connected to the upper side plates 2L, 3R.
2R and the lower frame plates 9L, 9R are configured in a removable longitudinal strip shape, and the middle side plates 3L, 3R are fixed by openings provided at the lower part of the lower frame plates 9L, 9R.
The upper parts of the middle side plates 3L, 3R are pulled and biased from the inside of the bonnet by the springs 4 which are pulled and biased from the inside of the bonnet, and the upper parts of the middle side plates 3L, 3R are attached to the sides of the upper side plates 2L, 2R. It is abutted and fixed.

(E) Embodiment The purpose and structure of the present invention are as described above. Next, the structure of the embodiment shown in the attached drawings will be explained.

Fig. 1 is a partial sectional side view of the bonnet of the present invention, Fig. 2 is a front sectional view of the bonnet, Fig. 3 is a plan sectional view of a headlamp attachment device to the bonnet grille, and Fig. 4 is a side view. The sectional view and FIG. 5 are front views.

In Figures 1 and 2, the bonnet is the top plate 1.
It is composed of a front upper panel 13, a front grill 10, a front lower panel 30, upper side plates 2L, 2R, middle side plates 3L, 3R, lower frame plates 9L, 9R, etc.

The front end of the bonnet top plate 1 is fixed with bolts to the upper surface of a front column 20 assembled in a gate shape, and the rear end is fixed to the upper surface of a dash board column 31 with bolts.

Since the front upper panel 13, front grille 10, and front lower panel 30 are not removed for repair, they are integrally assembled and fixed to the front of the front support column 20.

The front grill 10 is configured in different colors to accent the bonnet design, and has headlights 11 attached thereto.

Let me explain the configuration of the side plate.

The upper side plates 2L and 2R are the widest, and the upper side plate 2
It fits loosely into the side grooves of the top plates 1 of L and 2R, the rear end is fixed to the side surface of the dart board support column 31, and the front end is fixed to the rear part of the front upper panel 13.

A mesh plate 35 for sucking cooling air for the radiator is fitted into the front part of the upper side plates 2L and 2R.

Reference numeral 33 is a connecting rod that connects and reinforces the radiator bracket of the radiator 19 and the front strut.

The lower frame plate 9L is fixed to the side surface of the oil pan of the engine E, the front axle bracket, etc.

These upper side plates 2L, 2R and lower frame plates 9L, 9
R is fixed with a bolt and cannot be removed easily. On the other hand, the middle side plates 3L and 3R are supported by a spring 4 and a rotating support 5, and a pin 21 constitutes a fulcrum. You can easily open it by pulling it to the side.

Pin 21 that supports the middle side plates 3L and 3R at the bottom
project obliquely upward from the lower frame plates 9L and 9R, and a large elongated hole opened in the horizontal plate at the lower edge of the middle side plate is fitted into this.

If the upper part of the middle side plates 3L and 3R is rotated laterally using the fitting portion between the pivot engagement pin 21 and the opening as a pivot point, the rotation support body 5 will be rotated. The upper part is opened like 3', and repairs and inspections can be carried out by inserting your hand through there.

If you want to open it temporarily, you can open it by rotating it like this, but if you want to perform a repair inspection using both hands, remove the middle side plate from the lower pin and pull it open using the rotation support 5 and spring 4. If you hang it down to the side to prevent it from falling, you can keep it open.

When closing the middle side plates 3L and 3R, use the engagement pin 21 as a fulcrum without using any bolts, etc.
The upper part of the middle side plate 3L is rotated along the rotation support 5, and the other upper side plate 2,
It is fixed by being urged into contact with the lower frame plate 9.

Further, a mesh plate 3a for cooling discharge from the radiator is fitted in the middle side plate 3, and a mesh plate 35 for sucking cooling air from the radiator and a mesh plate 3a for discharge are vertically shifted. It is set up as follows.

Inside the bonnet is a large fuel tank 1 from the front.
2. Radiator 19, Engine E, Power steering hydraulic oil tank 14, Air cleaner 1
5th grade is placed.

Portions that need to be repaired and inspected by the operator on a daily basis are arranged and opened in the strips of the middle side plates 3L and 3R, which are rotatable and removable in the longitudinal direction.

That is, the engine fuel air bleed hole 6, the engine fuel water bleed hole 36 attached to the fuel tank 12,
These include an engine oil supply hole 7, an engine oil inspection hole 8, and the like.

Further, the rotation support body 5 of the middle side plate 3 is pivotally supported by a part of the radiator bracket of the radiator 19.

16 is a dart board, and a brake pedal, a clutch pedal 18, etc. are pivotally supported on a pedal support plate 17 within the dart board 16.

The front grill 10 is shown in FIGS. 3, 4, and 5.
Explaining how to install headlights on.

A grommet 22 made of an elastic body is fitted around the outer periphery between the front grille 10 and the headlight 11.

The fixation of the front grill 10 and the headlights is as follows:
The grommet 22 prevents the headlight from coming off, and the grommet 22 is connected to the four upper and lower bolts and the contact plate 2.
It is prevented from coming off at 5, 25, 26, and 26. The bolts 24 and 27 are embedded bolts, and abutment plates 25 and 26 are interposed therebetween and tightened with nuts 28.

The irradiation direction of the headlight can be changed vertically and horizontally by adjusting the tightness of the grommet 22 of the upper abutting plate 26.

Conventional headlights were fixed directly to the front upper panel or front grille, which caused the vibrations of the tractor to be transmitted, causing the filament to break easily and cause the bulb to break. These points are improved by interposing the grommet 22 made of an elastic material.

(f) Effects of the invention Since the invention is constructed as described above, it has the following effects.

First, the entire bonnet consists of the middle side panels 3L and 3R.
Since all parts except the parts are sealed with bolts and securely fixed, the airtightness of the sealed parts can be improved, so the intake air and discharge air from the radiator will not pass through any part other than the desired route. The cooling effect was improved because of the heat.

Second, if the bonnet is completely sealed, it will be difficult to remove and install the bonnet for repair and inspection purposes. By making only the strip-shaped middle side plates 3L and 3R easily removable, daily inspections can be easily performed by locating parts that require inspection and repair alongside the middle side plates 3L and 3R. It has become possible to do so.

Thirdly, the lower part of the middle side plates 3L, 3R is engaged and fixed by the engagement pin 21 and the opening, and the upper part is fixed in contact with the upper side plates 2L, 2R by the spring 4, so that it can be opened temporarily, It has also become easier to maintain the open state.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional side view of the bonnet of the present invention, Fig. 2 is a front sectional view, Fig. 3 is a plan sectional view of a headlamp attachment device to the bonnet grille, and Fig. 4 is a side sectional view. , FIG. 5 is a front view. DESCRIPTION OF SYMBOLS 1... Bonnet top plate, 2L, 2R... Upper side plate of the bonnet, 3L, 3R... Middle side plate of the bonnet, 5... Rotating support body, 9L, 9R... Lower frame plate, 21... Support pin.

Claims (1)

[Scope of utility model registration request] The side plates of the bonnet are composed of upper side plates 2L, 2R, middle side plates 3L, 3R, and lower frame plates 9L, 9R.
0, the rear end is supported and fixed to the dart board support column 31, and the middle side plates 3L, 3R are connected to the upper side plates 2L, 3R.
2R and the lower frame plates 9L, 9R are configured in a removable longitudinal strip shape, and the middle side plates 3L, 3R are fixed by openings provided at the lower part of the lower frame plates 9L, 9R.
The upper parts of the middle side plates 3L, 3R are pulled and biased from the inside of the bonnet by the springs 4, which are applied to the sides of the upper side plates 2L, 2R. A bonnet opening/closing device for an agricultural tractor characterized by abutting and fixing.