JPS633555Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cover structure for a pitman arm in a steering device for an agricultural tractor.

On agricultural tractors, the pitman arm is located at the front of the step at the operator's feet. This is because, due to the seat position and the angle of inclination of the steering wheel, the steering gear box must be located above the clutch housing and directly in front of the step.

In such a configuration, conventionally, a cover for the pitman arm was protruded from the clutch housing and the step to prevent the foot from being caught in the pitman arm, which rotates back and forth at the top of the tip of the step.

In order to completely cover this pit man arm, this invention includes a lower cover of the dart board,
Connect the steps to the inner surface of these covers. A Pittman arm is placed on the underside.

The purpose of the present invention is as described above, and the configuration of the present invention will be explained based on the drawings of the embodiments shown in the attached drawings.

FIG. 1 is a side sectional view of the foot guard and dash board portion. FIG. 2 is a rear view. FIG. 3 is a side view of the pitman arm. FIG. 4 is a rear view.

The foot guard 1 is constructed of a channel having a square cross section. An upper frame 1a is installed above the left and right frames 1d, and a horizontal frame 1b is installed horizontally in the center.

In addition, windproof frames 1e, 1 are installed outside the left and right frames 1d, 1d.
e, and are connected by lower step front plates 16, 16. Upper frame 1a, left and right frames 1d, windbreak frame 1e
A transparent windbreak plate 8 made of a synthetic resin plate or a glass plate is fitted into a rectangular hole formed by the step front plate 16.

A mounting portion 25 for attaching to the clutch housing is formed inside the lower portions of the left and right frames 1d, 1d. Also, horizontal frame 1
A mounting body for attaching to the upper surface of the clutch housing also protrudes forward from b.

Further, a mounting table 24 for the fuel tank 2 projects rearward from the horizontal frame 1b.

From the top of the windbreak frame 1e, a U-shaped handle mounting body 2 is installed.
6 is provided, and a handle, a back mirror, a turn signal, etc. are fixed to this handle attachment body 9.

Further, an L-shaped mounting plate 1c projects forward from the upper frame 1a of the foot guard 1. A top plate 15 of the bonnet is fixed to the mounting plate 1c. Further, a mounting plate 1i for fixing the dart board 5, hot air shielding plate 3, outer panel 4, etc. is also protruded from the rear. Further, a mounting piece for the fuel tank 2 is provided downward from the upper frame 1a. The fuel tank 2 is constructed by welding the edges of two pressed half-shaped tanks.

This foot guard improves the design around the fuel tank. That is, the top plate of the bonnet 15 is fixedly installed in front of the foot guard 1, the fuel tank 2 is vertically installed downward, and the dash board 5, outer plate 4, and hot air shielding plate 3 are fixedly installed in the rear. In this case, the lower cover 7 is fixed. The hot air shielding plate 3 covers along the rear surface of the fuel tank 2, and the outer plate 4 shields around the dash board.
The design is improved by complementing the lower cover 7 and completely sealing the rear surface of the bonnet, around the dash board, and between the lower part of the dash board and the clutch housing, and making it a decorative cover made of synthetic resin.

A hot air outlet 9 and a hot air shutter 10 are provided near the step of the lower cover 7, and the configuration is such that hot air for heating in winter can be obtained by opening the hot air shutter 10.

The steering device of the present invention consists of a steering gear box 11, a steering support tube 6, and a steering handle (not shown). When the steering handle is rotated, the sector shaft 20 protruding from the steering gear box 11 rotates, moving the pitman arm 14 back and forth. It rotates.
A ball joint 18 is provided at the tip of the pitman arm 14, and a drag rod 23 is connected to this ball joint. The tip of the drag rod 23 is connected to a knuckle arm or the like.

Conventionally, this pitman arm 14 was exposed together with the clutch housing 19, but in the present invention, it is covered by the lower cover 7 of the dash board 5 and the step 12L.

The dash board lower cover 7 is shaped to straddle the clutch housing 19 and hangs down along the side of the clutch housing 19. Since steps 12L and 12R are provided in the horizontal direction so as to be continuous with the lower end of the lower cover, the clutch housing 19 is covered so that it cannot be seen from the outside.

The pitman arm 14 of the present invention is disposed between the hem 7a of the lower cover 7 and the side surface of the clutch housing 19. The lower end of the pitman arm 14 is bent outward and placed under the step 12L, and the ball joint 18, drag rod, etc. are arranged below the step 12L.

In addition, the pedal rods 17a, 17a of the left and right brake pedals 17L, 17R are also attached to the clutch housing 19.
The pedal rod 1 is bent greatly outward from the side.
Even when 7a is stepped on, it is prevented from coming into contact with the drag groove 23 or the ball joint.

Another clutch housing cover 28 is placed behind the lower cover 7 on the clutch housing 19.

As described above, the present invention provides a steering gear box on the upper surface of the clutch housing of an agricultural tractor, and arranges a pitman arm on the side of the clutch housing.
It is covered with the lower cover of the dart board, and the connecting part with the drag rod is placed on the underside of the step, so the pitman arm does not rotate above the step like in the past, so there is no risk of damaging the feet of the operator on the step, and the pitman arm, etc. Since it is hidden by the lower cover and steps, the design is also improved, and when the operator gets on and off the machine, there are no obstacles near the steps, so the operator can operate with peace of mind.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of the foot guard and dash board section, FIG. 2 is a rear view, FIG. 3 is a side view of the pitman arm, and FIG. 4 is a rear view. 5... Datsushi board, 7... Lower cover, 1
1... Steering gear box, 14... Pitman arm, 19... Clutch housing, 2
3...Dratsugrotsud.

Claims (1)

[Scope of utility model registration request] A steering gear box is installed on the top of the clutch housing of an agricultural tractor, a pitman arm is placed on the side of the clutch housing, the upper side of the pitman arm is covered with the lower cover of the dart board, and the connection part with the drag rod is placed on the bottom of the step. Characteristic steering device for agricultural tractors.