JPS6117862Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an auxiliary step device for a tractor.

Usually, large tractors have a large tractor body, so an auxiliary step supported by the main step and the tractor body is arranged below the front of the main step to allow an operator to get on and off the tractor.

On the other hand, a mounting frame for mounting a conventional front working machine such as a front loader on a tractor is arranged from the center to the front of the tractor body, and can be mounted independently of the auxiliary step.

However, there is an improved mounting frame that is arranged from the center to the rear of the tractor body to distribute the support load over the entire tractor body. This mounting frame passes under the main steps on both sides of the tractor body, but since it must have sufficient ground clearance, it will interfere with the mounting position of the auxiliary steps, making it difficult to install the auxiliary steps. .

In view of the above-mentioned problems, the present invention is designed to prevent installation interference with the front work equipment mounting frame itself, which is located from the center to the rear of the tractor body, by installing it on the front work equipment mounting frame itself. An object of the present invention is to provide an auxiliary step device for a tractor configured as follows.

The present invention provides an auxiliary step device in which main steps are attached to both sides of the tractor body, and auxiliary steps are arranged below the main step in front of the main step. A front work equipment mounting frame, which is approximately L-shaped in side view and is integrated with a horizontal part that extends from the center part to the bottom of the main step and reaches the rear part, is fixed, and the front work equipment is attached to the upper ends of the left and right vertical parts. It is characterized in that an auxiliary step is attached to the front upper surface of at least one of the lateral parts.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of an agricultural tractor 1 equipped with a front loader 2 as a front working machine, where 3 is the tractor body, 4 and 5 are front and rear wheels,
Reference numeral 6 denotes a mounting base for the front loader 2, which is mounted on a mounting frame 7 by bolting the flange portions 6a and 7c of both.

The mounting frames 7 are arranged on both sides of the tractor body 3 and are formed into an L-shape on the side. Each mounting frame 7
The front part 7a of the tractor body 3 is fixed to a mounting seat 3a formed in the center of the tractor body 3 via a plurality of bolts 8 (for example, four bolts), and the rear part thereof is arranged at the rear of the tractor body 3. It is supported by a support shaft 9.

Reference numeral 11 denotes a bracket fixed to both sides of the rear lower part of the tractor body 3, and between the two brackets 11, the above-mentioned 1
A book spindle 9 is supported, and each bracket 11 supports a mounting pin 13 of a lower link 12. Reference numeral 14 denotes a swing drawbar, and its traction rod attachment frame 15 is supported by a support shaft 9, as shown in FIG.

A left main step 17 is fixed to the tractor body 3, and a clutch pedal 18 is disposed in front of it. Conventionally, this main step 17 and the tractor body 3 support an auxiliary step.
Reference numerals 19a, 19b, and 19c indicate retaining pins for the mounting frame 7, lower link 12, and swing drawbar 14, respectively.

The auxiliary step 20 of the present invention is shown in FIGS.
As shown in the figure, it is provided on the upper surface of the mounting frame 7. This auxiliary step 20 is located at the front part 7a of the mounting frame 7.
It is welded or bolted to the upper surface of the nearby portion, and is located below the front of the main step 17. The auxiliary step 20 is only provided on the left-hand mounting frame 7, since the tractor 1 is normally entered and exited from the left side, but in special cases it may be arranged on the right-hand mounting frame or on both the left and right sides. It's okay.

That is, the auxiliary step device has, on the left and right sides of the tractor body 3, a vertical portion A in front of the main step 17 and a lateral portion B extending from the approximate center of the tractor body 3 to the rear part passing below the main step 17. The integrated front work equipment mounting frame 7, which is approximately L-shaped when viewed from the side, is fixed.
A front work machine 2 is attached to the upper ends of the left and right vertical sections A, and an auxiliary step 20 is provided on the front upper surface of at least one of the horizontal sections B.

According to the present invention described in detail above, the auxiliary step is provided on the upper surface of the horizontal part of the front work equipment mounting frame, which has a substantially L-shape when viewed from the side, with the vertical part and the horizontal part integrated. The attachment of the auxiliary step is strong, and the lateral part extends from the front lower part of the main step to the rear, passing under it, so the position where the auxiliary step is installed can be arbitrarily selected from the front and back. Since the work equipment is attached to the upper end of the vertical section, it does not interfere with getting on and off using the auxiliary steps.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view, Fig. 2 is a sectional view taken along the line - - of Fig. 1, and Fig.
The figure is a sectional view taken along the line -- in FIG. 1...Tractor, 2...Front loader, 3...
...Tractor body, 3a...Mounting seat, 7...Mounting frame, 7a...Front part, 9...Spindle, 17...Main step, 20...Auxiliary step.

Claims (1)

[Scope of utility model registration request] In an auxiliary step device in which main steps are attached to both sides of a tractor body and an auxiliary step is arranged below the main step in front of the main step, there is a vertical section in front of the main step on the left and right sides of the tractor body and a section from the approximate center of the tractor body. A front work equipment mounting frame, which is approximately L-shaped in side view and is integrated with a horizontal part that passes below the main step and reaches the rear part, is fixed, and the front work equipment is attached to the upper ends of the left and right vertical parts, and at least An auxiliary step device characterized in that an auxiliary step is provided on the front upper surface of one of the lateral parts.