JPS5824565Y2 - Agricultural tractor front axle device - Google Patents

Description

[Detailed description of the invention] This invention relates to a variable tread (tread distance) front axle device for agricultural tractors1. The object of the present invention is to provide a novel front axle device that is designed to be much more scalable.

Regarding the illustrated embodiment 1. To explain the configuration of the front axle device of an agricultural tractor according to this invention, as shown in Fig. 1, an engine 1 is mounted on the front of the machine, and the power of the engine 1 is transmitted to the rear of the machine to drive the tractor. In an agricultural tractor configured to drive left and right rear wheels 2, which are drive wheels, and a working machine (not shown) connected to the rear of the machine body via a connecting link device 3, the machine direction is as follows:
The left and right front wheels 4 are rotatably supported around the king pin 5 as shown in FIGS.
The upper knuckle arms 6 are interlocked and connected by a tie rod 7, and a worker sitting on a passenger seat 8 rotates m knuckle arms 4 via a drag rod 10 using a control handle 9, thereby horizontally turning the left and right front wheels 4. Based on this idea, the front axle of this agricultural tractor has been improved as follows.

In other words, the front center pin 1 along the longitudinal direction of the aircraft
In the illustrated case, the front axle is supported so as to be swingable around the axis, and in the illustrated case, the front axle 14 is connected via a bracket 13 to a front center pin 11 that is supported so as to be swingable around the axis. The inner axle 1 is fixed to the outer cylinder 15 of the left and right king pins 5 and is telescopically telescopically configured from square inner left and right inner axles 16 that are inserted into the outer axle 14.
6, a large number of through holes 1 along the longitudinal direction of the aircraft at appropriate intervals.
7 is formed on the center line, and one pair of adjustment bolts 18 for each left and right fixed to the outer axle 14 are passed through the through hole 11 to connect between the axles 14 and 16. By selecting the through hole 17 of the inner axle 16 through which the inner axle 18 passes, the tread can be changed as appropriate.The following left and right stabilizers 19 are provided.

That is, each stabilizer 19 has both ends connected to the front center pin 11 and the outer axle.

Each stabilizer 1 is attached by welding to the stabilizer 14.
9 to the outer axle 14 is particularly selected above the adjustment bolt 18, that is, above the center line of the axle 14.16.

As can be seen from FIG. 4, the illustrated inner axle 16 is made of a dense steel material that also serves as a weight.

In the figure, reference numeral 20 denotes an axle support frame fixedly provided to the fuselage.

Note that when the front center pin 11 is fixedly supported on the aircraft body side, an outer cylinder rotatable around the axis is provided on the pin 11, and the front axle is fixedly supported on the outer cylinder, one end of the stabilizer 19 is , fixed to the outer cylinder.

The front axle device according to this invention has the following features:
This is a tread variable type front axle device, and the front axle side mounting of the stabilizer 19, which is provided with both ends attached to the front center pin 11 or its outer cylinder and the front axle, that is, the outer axle 14, is for changing the tread. Since the stabilizer end is installed higher than the adjust bolt 18 of The width d (FIG. 3) of the stabilizer 19 can be greatly expanded, and the width d of the stabilizer 19 can be greatly expanded.
By positioning the front axle side end of the front axle directly above the adjustment bolt 18 as shown in Fig. 3, the overall width D (Fig. 3) can be greatly expanded. This makes it possible to dramatically increase the fastness.

As described above, the present invention provides a novel front axle device for an agricultural tractor, which is designed to greatly increase the robustness of the front axle portion compared to the conventional case.

[Brief explanation of drawings]

Fig. 1 is a partially longitudinal side view of an agricultural tractor equipped with an embodiment of this invention, Fig. 2 is a partially longitudinal front view of the main parts of the tractor, Fig. 3 is a partially cutaway of the main parts, Partial cross-sectional plan,
FIG. 4 is a longitudinal sectional side view of the main part. 4...Front wheel, 11...Front center pin, 14...Outer axle, 16...
...Inner axle, 17...Through hole, 18
...Adjust bolt, 19...Stabilizer.

Claims (1)

[Scope of utility model registration request] This is a tread variable type front axle device, and the stabilizer, which is installed at both ends of the front center pin or its outer cylinder and the front axle, is mounted on the front axle side at a position higher than the adjustment bolt for changing the tread. It is characterized by being
Agricultural tractor front axle electrical manufacturing