JPS5942258Y2 - Agricultural tractor PTO shaft protection cap mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a protective camp mounting device for protecting the PTO shaft of an agricultural tractor.

Generally, when the work equipment is removed from the tractor, the PTO
A protective camp is placed over the PTO shaft to protect the shaft, and the protective camp is placed over the PTO shaft when the work equipment is attached.
It has been removed from the TO axis, but while the work equipment is attached to the farm, the protective camp that was removed may be lost, or it may come into contact with other tools while being stored. There is a problem that it may get damaged.

This invention solves the above problems, and there is no risk of losing or damaging the protective camp that has been removed from the PTO shaft, and there is no need to transfer the protective camp from the PTO shaft to the protective camp mounting device. Or, to provide a mounting device for a PTO shaft protection camp that requires almost no effort to transfer from the mounting device to the PTO shaft.

Another purpose of the present invention is to reduce the time and effort required to manufacture the mounting holder.

In order to achieve the above object, the present invention provides seven outward flange at the open end of the PTO shaft protection camp, a notch and a locking pin for preventing rotation on the 7 lunge, and a rear end surface of the transmission case. A protective camp mounting plate is provided for the PTO shaft and the coaxial core, and the mounting plate includes a headed bin that engages with the notch when the camp rotates, and a rotating cap that engages the locking bin with elastic force. A blocking recess is provided, and a PTO is installed on the seat-side surface of the fender and at a position lower than the seat.
A mounting holder for the shaft protection camp is provided, and the holder is provided with a head bin and a rotation prevention recess having a structure similar to that of the mounting plate.

To explain one specific example of the present invention based on the drawings, Fig. 1 is a schematic left side view of an agricultural tractor with the left rear wheel removed, and 1 is a mission case in the rear half of the machine;
2 is a PTO shaft that projects rearward from the rear end surface 1a of the mission case 1, and 3a is a seat provided on the rear upper surface of the mission case 1.

Left and right rear axle housings 3 and 4 (Fig. 2) are provided integrally with the mission case 1 on both rear sides of the mission case 1, and left and right rear axles 5 and 6 attached to the rear axle housings 3 and 4, respectively, Left and right rear wheels 7,
8 is attached.

Left and right fenders 9 and 10 are formed to cover the upper half of the rear wheels 7 and 8 and the sides of the seat 3a (Fig. 2).
are fixed to both sides of the transmission case 10 or to the rear axle housings 3 and 4 with suitable fixing parts such as bolts via support plates 11 and 12, for example.

One of the fenders 9 and 100, for example, the right fender 100, is located at a low position on the rear part of the side part 10a facing the seat 3a, and at a position where the operator does not get in the way when sitting on the seat 3a, for example, from the seat 3a. A mounting holder 23 for mounting the PTO shaft protection camp 13 (Figs. 3 and 4) is provided at the lower position.

FIG. 3 is a diagram showing a specific example of the protection camp 13, and FIG. 4 is a view in the direction of the ■ arrow in FIG. It is formed larger than the diameter D2, and an outward flange 16 is formed on the outer periphery of the opening edge 14.

The outward 7-flange 16 is provided with notches 17 at multiple locations, for example, at symmetrical positions with respect to the center O. A hole 18 is provided at a symmetrical position to The leaf spring 190
The proximal end portion 19a (FIG. 4) is inserted into a plate spring holding portion 21a (FIG. 4A) formed in a tunnel shape on the outward facing 7 flange 16, and a spring release stopper 2 formed in a closed shape on one side is inserted.
1b and attached to the outward flange 16, and the elastic action of the plate spring 19 urges the locking pin 20 in its protruding direction (rightward in FIG. 3).

As shown in FIG. 4B, which is a cross-sectional view taken along line B-B in FIG.
The upper surface 16b of the outward flange 16 and the lower surface 21'b of the spring release stopper 21b are approximately the same.
The leaf spring 19 is kept from coming off by making the leaf spring 19 a flat surface.

Figure 5 is the second view of the mounting holder 23.
The figure is a VI-VI, ■-■ cross-sectional view of FIG.
A bin 24 with a head (see Figs. 5 and 6) is provided at a position corresponding to the position shown in Fig.
70, facing opposite to the fender 10 side, so as to correspond to the position of the locking pin 20 when it is engaged with the large diameter portion 17a (in the state shown by the solid line in Figure 4, however, the outer periphery of the head is a virtual line). A recess 25 (Figs. 5 and 6) is formed, and an overhang 26 (see Fig. 6) extending toward the 7-enter 10 side is formed on the inner circumference of the mounting holder 23. Protection camp 1
As shown in Fig. 7, the outer circumferential part of the seat 3 is formed so that its rear part (right part in Fig. 7) is inclined toward the seat 3a side (lower side in Fig. 1), and Attach the overhang 26 to the seat 3a of the fender 10 using the bolt 27 and the bolt 27'.
Tighten it to the part facing.

Reference numeral 28 denotes a positioning plate that fits into the protective camp 13 from the inside when the protective camp 13 is attached to the mounting holder 23, and the diameter of its outer peripheral surface is equal to the diameter of the inner peripheral surface of the opening edge 14 of the protective camp 13. It is formed so that it is equal to .

The positioning plate 28 is formed by cutting and raising the mounting holder 28 itself into an arc shape and bending it in the same direction as the headed bottle 24, as shown in FIG.

Further, as shown in FIG. 2, an annular mounting plate 29 is attached to the rear end surface 1a of the minsion case 1 coaxially with the PTO shaft 2, and this mounting plate 29 also has a head similar to the mounting holder 13. A pin 30 and a recess 31 are formed.

When attaching the protective camp 13 to the mounting holder 23, the small diameter portion 17 of the notch 17 is attached as shown by the phantom line in FIG.
b corresponds to the headed pin 24, and the protective camp 13 is fitted to the outer periphery of the positioning plate 28. (FIG. 7), the protection camp 13 is rotated in the direction of the arrow in FIG. 4 to position the large diameter portion 17a at the location of the headed bin 24 (solid line in FIG. 4).

At this time, as shown in FIG. 6, the head of the headed bottle 240 engages with a part of the outward flange 16 to prevent the protective camp 13 from being pulled out and falling, and the locking bottle 20 is fitted into the recess 25. This prevents the protection camp 13 from rotating due to vibrations of the tractor or the like.

That is, the protective camp 13 can be easily attached and detached, and will not come off due to vibrations of the tractor.

In the drawing, the mounting holder 23 is provided on the right fender 10, but it goes without saying that the mounting holder 23 may be provided at a low position behind the portion of the left fender 9 facing the seat 3a. be.

As explained above, this invention is based on PTO shaft protection camp 13.
Since the mounting holder 23 is provided at a low position in the portion facing the seat 3a of the 7-enders 10, 9, there are the following advantages.

(1) While the protective camp 13 is removed from the mounting plate 29 surrounding the PTO shaft 2, there is no need to worry about losing it if it is attached to the mounting holder 23.

(2) Since the mounting holder 23 is provided at a low position on the fender 10, even if the protective camp 13 is attached, it will not get in the way of the worker on the seat 3a, and will not be hit by outside objects such as the worker. There is no need to worry about it (there is no risk of it being damaged or lost).

(3) Since the mounting holder 23 is provided in a position that the worker can reach when standing at the rear of the tractor, the worker stands at the back of the tractor and connects the protective camp 13 to the PTO shaft 2.
As soon as it is removed, it can be attached to the mounting holder 23 on the spot.

That is, the protective camp 13 is attached to the PTO shaft 2 by the mounting holder 23.
PT from the mounting holder 23 or vice versa.
The work of transferring to O-axis 2 does not require time or effort.

(4) Since the mounting holder 23 is provided on the part facing the seat 3a of the Fenter-10, the mud thrown up by the rear wheels 8 will not get on the mounting holder 23 and the protective camp 13 will not get dirty.

(5) Attach the mounting holder 23 provided on the fender 10 to the PT
Since it has the same structure as the mounting plate 29 that can be attached coaxially with the O-axis 2, manufacturing of the holder 23 is easy.

That is, the PTO shaft 2 and the coaxial center mounting plate 29 have a headed bin 30.
The holder 23 attached to the fender 10 is provided with a head pin 24 and a recess 25 similar to those of the mounting plate 29. It suffices to make one with the same structure as the mounting plate 29, and the manufacturing of the holder 23 does not take much time.

(6) The protective camp 13 can be easily attached and detached from the holder 23, and once attached, it will not come off due to the vibration of the tractor.

That is, by pressing the camp 13 against the holder 23 and rotating it, the head of the headed bottle 240 is engaged with the notch 17, so the camp 13 can be easily attached to the holder 23. Moreover, by fitting the locking pin 20 into the recess 25 with elastic force, rotation of the can 1130 after installation is prevented, so that the camp 13 will not come off due to vibrations of the tractor.

[Brief explanation of the drawing]

Figure 1 is a partially cross-sectional left side schematic diagram of an agricultural tractor equipped with an attachment device according to the present invention, Figure 2 is a view in the direction of the ■ arrow in Figure 1, Figure 3 is a side view of the protection camp, and Figure 4. is ■ in Figure 3.
4A is a sectional view taken along line A-A in FIG. 4, FIG. 4B is a sectional view taken along line B-B in FIG. 4, and FIG. is a sectional view taken along line VI-Vl in FIG. 5, and FIG. 7 is a sectional view taken along line ■-■ in FIG. However, No. 6. Figure 7 shows the protective camp installed. 2...PTO axis, 9°10...Fender-113...Protective cap, 23...
・Mounting protective equipment.

Claims (1)

[Scope of utility model registration request] An outward 7 flange 16 is provided at the open end of the PTO shaft protection cap 13, and the flange 16 is provided with a notch 17 and a locking pin 20 for preventing rotation.
A is provided with a protective camping mounting plate 29 for the PTO shaft 2 and the coaxial core, and the mounting plate 29 has a headed pin 30 that engages with the notch 17 when the can 1130 rotates, and a locking pin 20 that is attached by elastic force. A rotation prevention recess 31 to be fitted is provided, and a mounting holder 23 for the PTO shaft protection camp 13 is provided on the surface of the fender 10 on the seat 3a side and at a position lower than the seat 3a. 2 is a mounting device for a PTO shaft protection camp for an agricultural tractor, characterized in that it is provided with a head bin 24 and a rotation prevention recess 25 having the same structure as the mounting plate 29.