JPS5918941Y2 - Radiator dust prevention device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a dust prevention device for a radiator, which is suitable for a tractor such as an agricultural tractor, which carries out work while hoisting up straw waste, garbage, insects, etc.

Conventionally, the shape of the radiator bracket was made to match the bonnet to reduce the gap between the two, which was somewhat effective in preventing hot air from blowing back from the engine side behind the radiator, but it also prevented dirt, straw, and debris from blowing back. It cannot prevent the invasion of insects, etc.

It is also possible to place a lip-type seal between the radiator bracket and the bonnet, but in that case, gaps are likely to form between the seal material and the bonnet, radiator bracket, etc. due to variations in the position of the bonnet in the left-right, front-back, and front-back directions. .

This invention mainly solves the problem of dirt, straw, insects, etc. flowing back from both sides of the bonnet and from the top and bottom sides (this causes clogging of the radiator screen and core), and also prevents the deterioration of radiator performance due to the backflow of hot air. This will be explained below with reference to the drawings.

FIG. 1 is a partially longitudinal left side schematic diagram of the front end of an agricultural tractor to which the present invention is applied, and arrow F indicates the front of the tractor.

The bonnet 1 is integrally equipped with a cross member 2 having a box-shaped cross section at the lower front end, and the hinge brackets 3 fixed to both left and right ends of the cross member 2 are connected via hinge pins 4 in the left and right direction (perpendicular to the plane of the paper in FIG. 1). It is connected to a bracket 5, and the bracket 5 is fixed with bolts 7 to a front axle racket 6 which also serves as the frame of the tractor.

Therefore, the bonnet 1 is opened in the direction of arrow A using the pin 4 as a fulcrum by removing the locking mechanism (not shown).
The battery 8, radiator 9, air cleaner 10, engine (not shown), etc. mounted on the bracket 6 can be exposed for inspection and maintenance.

Reference numeral 11 denotes a front grille fixed to the front end of the bonnet 1, which is divided into an upper panel 13 consisting of a frame body for attaching headlamps 12, and a lower panel 14 which is cut out from a large screen, and is equipped with an air cleaner 10, etc. Almost completely covers the front end of the chamber 15 containing the upper panel 13, the bonnet 1 above and below it, and the lower panel 1.
A sealing material 16 having sufficient elasticity and sealing properties such as urethane foam is attached to the joint 4, and a cylindrical hood 18 made of rubber-like elastic material is attached to an outward flange 17 provided on the outer periphery of the headlamp 12. Insert this hood 18
One tip lip of the headlamp 12 is elastically fitted into the tapered outer cylindrical surface 20 of the upper panel 13 to ensure sealing performance and to enable focus adjustment of the headlamp 12.

22 is a seal plate having a cross-sectional shape shown in FIG. 1 and extending in the left-right direction and connected to the left and right walls of the bonnet 1;
The lower edge of the front end is tightly attached to the front surface of the cross member 2 and fixed with bolts, and forms the bottom plate of the chamber 15 in cooperation with a sealing material (urethane foam) 23 that is compressed between the lower panel 14 and the lower panel 14 .

A fence-shaped seal plate 26 is provided on the front surface of the radiator bracket 25 so that the rear edge of the seal plate 22 comes into pressure contact with the seal plate 22 via a seal material 24, and the seal material 24 is adhered to the lower surface of the seal plate 22, for example. .

The forward protrusion of the seal plate 26 is set to be relatively large so that the seal plate 22 can be seated on the seal plate 26 via the seal material 24 over a wide area. The dimensions are determined so that the seal plate 26 left on the radiator bracket 25 side when the battery 8 is exposed does not impair the maintainability of the battery 8.

The radiator 9 is installed in a window hole provided in the radiator bracket 25, and sealing around the radiator 9 is ensured. However, there has conventionally been a gap between the radiator bracket 25 and the bonnet 1. In this case, the gap is closed by side sealing materials 28 on both the left and right sides and an upper sealing material 29 at the upper end.

The side seal material 28 is attached to the rear surface of the side seal plate 30 fixed to the inner surface of the bonnet 1, so that when the bonnet 1 is closed as shown in FIG. It has become.

The upper sealing material 29 is attached to the lower surface of the top wall of the bonnet 1, and when the bonnet 1 is closed as shown in FIG. fill in.

The lower ends of the left and right side seal members 28 are the seal plates 2
The portion 24a is continuous with the sealing material 24 pasted on the lower surface of 2.

In addition, in Fig. 1, 32 is a radiator screen;
3 is a louver provided on the left and right side walls of the bonnet 1, 34 is a cap of batch no. 8, 35 is an intake port of the air cleaner 10, 36 is an intake duct, and the duct 36 is connected to the engine behind the bracket through a hole 37 made in the radiator bracket 25. connected to.

When the locking mechanism of the bonnet 1 is removed and the bonnet 1 is opened in the direction of arrow A using the pin 4 as a fulcrum, the sealing material 24 attached to the seal plate 22 is separated from the fence-shaped seal plate 26, and the side seal plate 30 on the inner surface of the bonnet is removed. The side sealing material 28 attached to the radiator bracket 25 separates from the left and right edges of the front surface of the radiator bracket 25, and the upper sealing material 29 attached to the inner surface of the top wall of the bonnet 1 separates from the upper edge of the front surface of the radiator bracket 25. , and move forward together with the bonnet 1, leaving the air cleaner 10 and the like behind.

When closing the bonnet 1, the above operation is reversed, and the sealing material 24, 28, 29 completely seals the lower side and rear side of the chamber 15.

When the front tire or work equipment below the front axle bracket 6 picks up straw waste, garbage, insects, etc. while the tractor is in operation, the straw waste does not enter the lower dust chamber 15, so the radiator screen 32 and the core of the radiator 9 are prevented. There is no risk of clogging, and overheating can be prevented.

When embodying the present invention, the sealing material 24 may be attached to the sealing plate 26 side to press the sealing plate 22, or similarly, the side sealing material 28 may be attached to the front surface of the radiator bracket 25 to form the side sealing plate. 30 may be pressed into contact with each other.

The same applies to the upper seal material 29, but if the inner surface shape of the bonnet 1 is complicated, it is advantageous in terms of both workability and sealing performance to attach the upper seal material 29 to the bonnet 1 side as in the illustrated embodiment. be.

As explained above, in the present invention, since the side seal material 28 and the upper seal material 29 of the surface compression type are arranged between the radiator bracket 25 and the bonnet 1, the hot air blowing back from the rear of the radiator and the straw waste flowing back at the same time, Dust, insects, etc. can be reliably blocked, overheating due to clogging of the radiator screen 32 and radiator core can be prevented, and deterioration of radiator performance due to backflow of hot air can be prevented.

More specifically, in the present invention, a left-right support shaft 4 for opening and closing is provided at the front lower part of the bonnet 1, and a seal plate 22, which also serves as a duct bottom plate and extends rearward from the lower edge of the front dog nose 11 at the front end of the bonnet, is attached to the radiator. Seal material 2 is attached to the fence-like seal plate 26 at the front end of the bracket.
4, an airtight duct (chamber 15) is formed continuously from the front grille 11 to the radiator 9, and a surface compression type side seal material 28 and an upper seal material 29 are interposed between the radiator bracket 25 and the bonnet 1. death,
Bonnet side seal play 1- only when opening the bonnet
Since the battery chamber 22 is opened, the rolled-up straw waste, garbage, insects, etc. are completely blocked from moving forward of the radiator 9 by the seal plates 22, 26, which also serve as the bottom plate of the chamber 15, the sealing material 24, etc. In addition, blowing back of hot air from the engine side behind the radiator is reliably prevented, which prevents clogging of the radiator screen and core, and prevents deterioration of radiator performance due to backflow of hot air.

In addition, the bonnet side seal plate 22, which serves as the bottom plate of the chamber 15 (duct), cooperates with the seal plate 26 on the radiator bracket 25 side to form the duct bottom plate, so the longitudinal width of the bonnet side seal plate 22 can be shortened. Even though the hinge pin 4 is provided at the front lower part of the bonnet 1, there is no fear that the seal plate 22 will interfere with the suction port 35, etc. inside the chamber 15 when the bonnet is opened or closed, and the inside of the chamber 15 can be made wider. In addition, the battery chamber below the seal plates 22 and 26 can be opened and closed by the bonnet side seal plate 22, making maintenance and inspection of the battery 8 easy.

[Brief explanation of the drawing]

FIG. 1 is a partially vertical left side schematic diagram of an agricultural tractor to which the present invention is applied, and FIG. 2 is a schematic cross-sectional diagram taken along line II--II of FIG. 1... Bonnet, 4... Pin (spindle), 25... Radiator bracket, 28...
...Side seal material, 29...Upper seal material.

Claims (1)

[Scope of utility model registration request] A left-right support shaft for opening and closing is provided at the front lower part of the bonnet, and a seal plate that also serves as the duct bottom plate that extends rearward from the lower edge of the front grille at the front end of the bonnet is connected to the fence-like seal plate at the front end of the radiator bracket via a sealing material. to form an airtight duct from the front grille to the radiator, and surface compression type side sealing material and upper sealing material are interposed between the radiator bracket and the bonnet, so that the bonnet side seal plate closes the battery compartment only when the bonnet is opened. A dustproof device for a radiator characterized by being open.