JPS581094Y2 - Agricultural tractor safety frame mounting device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a safety frame attachment device for an agricultural tractor, and its purpose is to attach the safety frame to the attachment part of the safety frame when the base end of the safety frame is attached to the rear axle 1 housing. To provide a mounting structure that prevents damage to a rear axle housing even when unexpected excessive force is applied.

The structure of the present invention will be explained based on a drawing showing an embodiment. FIG. 1 shows an engine 1 mounted on the front of the fuselage, a clutch housing 2 on the rear, and a transmission case 3 on the rear. The safety frame 4, which shows the entire connected tractor and protects the occupants in case the machine falls over, is
The upper and lower parts of the fender 9 are attached to the rear axle housing 5, which protrudes left and right from the transmission case 3, through plates 6.7, and the rear lower end of the fender 9, whose front lower end is fixed to the step 8, is also attached to the rear axle housing 5. It is fixed to the upper surface of the housing 5.

Reference numeral 10 denotes a rear axle housed within the rear axle housing 5, which transmits the power from the transmission case 3 to the rear wheels 11.
It is intended to be communicated to the public.

FIG. 2 shows the details of the attachment part of the safety frame 4, and as shown in FIG. The end extends 17 from the rear axle housing 5 in the direction of extension of the plate 7.

13 is a board welded to the lower end of the safety frame 4;
The lower end of the safety frame 4 is attached to the base plate 13, and the lower part extending from the rear axle housing 5 is fastened to the upper surface of the plate 7 by three bolts 14 inserted from below. A flat spacer 15 is interposed between the substrate 13 and the lower plate 7.

24 is an elongated hole formed in the plate 7 for lower attachment, and the bolt 14 is inserted into this elongated hole 24.

On the other hand, the upper mounting plate 6 attached to the upper surface of the rear axle housing 5 is located at the rear of the rear axle housing 5 and extends in the extending direction of the plate 6, and at its extending end 16, the safety frame 4 is attached to the upper mounting plate 6. It is welded in the middle.

Reference numeral 18 denotes a fixed piece connected to the rear of the lower end of the fender 9. Between this fixed piece 18 and the above-mentioned upper mounting plate 6, there are a cylindrical spacer 19, 19 and a vibration isolating rubber 20.
20 is interposed therebetween, and another anti-vibration rubber 21.21 is placed on the upper surface of the fixing piece 18, and the lower end of the bolt 22.22 inserted through these is connected to the rear axle 1. While being screwed onto the upper surface of the housing 5,
Tightening is fixed by nuts 23, 23 screwed into the upper ends, and in this way, the fender 9 and the upper mounting plate 6 are jointly fastened to the rear axle housing 5.

The present invention has the above-mentioned configuration, and in this way, in the present invention, the flat plate-shaped mounting bolted and fixed to the rear axle housing has one end of the plate located outside the rear axle housing and attached to the mounting plate. The plate extends in the extending direction of the plate, and the proximal end of the safety frame is fixed to this extending part. Therefore, the plate can be bent relatively easily at the extending part, and therefore In the event that an excessive force is unexpectedly applied to the safety frame, this attachment can prevent the rear axle housing from being damaged due to excessive load being applied to the rear axle housing due to bending of the plate.

Furthermore, if such attachment cannot be prevented due to bending of the plate, the attachment can be accommodated by stretching and shearing the bolts fixing the plate.
The risk of damage to the rear axle housing is extremely reduced.

Furthermore, in the mounting of the present invention, the plate is formed in a flat shape,
Moreover, since the extending portion extends in the direction of extension of the mounting plate, it can be easily bent in both the front and back directions, unlike the case where the mounting plate is bent, as seen in, for example, Japanese Utility Model Application No. 51-70818. Since it can be done, the safety will be higher.

Furthermore, in the embodiment of the present invention, since a spacer is interposed between the upper surface of the plate and the lower end of the safety frame for lower mounting, this space can be removed or replaced depending on the size of the rear axle housing. This has the advantage of being able to use the same safety frame and providing versatility.

[Brief explanation of the drawing]

FIG. 1 is an overall front view showing the attached state of the safety frame of the present invention, FIG. 2 is an enlarged view showing details of the attachment part in FIG. 1, and FIG. 3 is a bottom view. 4...Safety frame, 5...Rear axle housing, 6,7...Mounting plate,
10... Rear axle.

Claims (1)

[Scope of utility model registration request] The two flat plate-like mountings on the top and bottom of the rear axle nozzle that houses the axle are fixed by tightening bolts, and the upper mounting fixes the plate to the middle part of the safety frame, while the lower mounting One end of the plate is mounted outside the rear axle housing and extends in the direction of extension of the plate, and a spacer is interposed between the upper surface of this extension and the base end of the safety frame. A device for attaching a safety frame to an agricultural tractor, characterized in that the protruding part and the base end of the safety frame are fixed with bolts.