JPS5921946Y2 - Propeller shaft cover for agricultural 4-wheel drive tractors - Google Patents

Description

[Detailed description of the invention] The propeller shaft cover of conventional agricultural four-wheel drive tractors was constructed completely separately from the clutch housing as shown in Figs. 6 and 7, and was divided into upper and lower parts, which reduced manufacturing costs As the propeller shaft becomes taller, it becomes troublesome to remove mud, dirt, etc. that have gotten into the cover, and the clutch housing must be made strong enough to have sufficient strength on its own, separate from the propeller shaft.

This invention significantly simplifies the structure by allowing the clutch housing to also serve as a cover for the propeller shaft, thereby reducing manufacturing costs.In addition, maintenance can be easily done by simply attaching and detaching the bottom cover.In addition, the clutch housing The purpose of the present invention is to provide a propeller shaft cover for an agricultural four-wheel drive tractor that can improve the strength of the tractor, in which a machine base 2 protrudes from the front of the machine body, and an engine 1 is mounted on the machine base 2. In a tractor having a front axle case 7 at the lower part, the engine 1
A clutch housing 3 provided at the rear of the clutch housing 3 is constructed of a U-shaped frame with an open bottom, and an upper surface cover 13 is connected to the front lower part of the clutch housing 3, covering the upper surface of the propeller shaft 11 and reaching the front axle case 7. established,
A series of lower covers 1 that cover the lower surface of the propeller shaft 11
4, the lower part of the clutch housing 3 and the upper cover 1
3, the propeller shaft extraction case 15, and the front axle case 7 in a removable manner.

To explain the present invention in more detail with reference to the embodiment shown in the drawings below, 1 is an engine mounted on a machine base 2, and a clutch housing 3 and a transmission case 4 are provided at the rear of the engine.
The rear wheels 6, 6 are attached to the axle 5 of the transmission case 4, and the front wheels 9, 9 are attached to the axle 8 of the front axle case 7 attached to the lower part of the machine base 2. There is.

As shown in FIG. 2, the clutch housing 3 is constituted by a frame having a U-shaped cross section with an open lower side, and the lower side thereof hangs down to a height that covers the side of the propeller shaft 11. A horizontal hole (L12...) is bored in the lower part of the hole.

Further, the upper surface cover 13 whose rear end is fixed to the front part of the clutch housing 3 reaches above the front axle case 7 in front, and horizontal holes 12 are formed in the parts where both sides thereof are bent downward. It is perforated.

14 is a lower cover having an upward U-shaped cross section,
The part facing the clutch housing 3 is formed low and fits inside the lower part of the clutch housing 3, but its front and rear parts are formed high, and the front part is as shown in FIG. The upper part is formed to be slightly wider and is configured to be joined to the outside of the upper surface cover 13, and the front end thereof is attached to the side surface of the front axle case 7 with mounting bolts 18.
The rear part is the propeller shaft extraction case 15.
It fits into the front part of the body and is screwed in with a mounting bolt 18.

In addition, horizontal holes 16 are formed in the lower cover 14 at positions facing the horizontal holes 12, and among the horizontal holes 16, the horizontal holes of the clutch housing 3 are formed. Mounting nuts 17 are welded to the inner surfaces of the horizontal holes 16 facing the horizontal holes 12 and the horizontal holes 12 of the top cover 13, respectively.・・・
By inserting the mounting bolts 18 into the and 16 from the outside and screwing them into the mounting nuts 17, the lower cover 14, the clutch housing 3, and the upper cover 1 are connected.
3, the front axle case 7, and the propeller shaft take-out case 15 are integrally coupled, and the propeller shaft 11 is completely covered.

Note that 19 in the drawing is the main shaft that transmits the power of the engine 1 to the transmission case 4.

As mentioned above, the present invention has the machine stand 2 protruding from the front of the aircraft body,
In a tractor having an engine 1 mounted on the machine base 2 and a front axle case 7 provided at the lower part, the clutch housing 3 provided at the rear of the engine 1 is formed by a U-shaped frame with an open bottom. The clutch housing 3
An upper cover 13 that covers the upper surface of the propeller shaft 11 and reaches the front axle case 7 is connected to the front lower part of the clutch housing 3, and a series of lower covers 14 that cover the lower surface of the propeller shaft 11 are connected to the lower part of the clutch housing 3 and the upper cover. 13, the propeller shaft extraction case 15, and the front axle case 7, the front axle case 7 is installed at the lower part of the machine base 2 on which the engine 1 is mounted, and the propeller that is transmitted to the front axle case 7 is attached. Although the shaft 11 is disposed at the lower part of the clutch housing 3 and the machine base 2, the upper surface cover 13 covers not only the inside of the clutch housing 3 but also the part extending between the clutch housing 3 and the front axle case.
Although it can be completely covered with the front part of the bottom cover 14, by removing the bottom cover,
Maintenance and inspection of the transmission mechanism within the clutch housing 3 and the propeller shaft 11 can be performed quickly and easily.

Moreover, even though the clutch housing 3 is configured to combine the U-shaped frame and the lower cover, the rear part of the lower cover 14 is connected to the propeller shaft extraction case 15, and the front part of the clutch housing 3 is connected to the lower cover. Since it is connected to the front axle case 7 by the upper surface cover 13 and the upper surface cover 14, the entire fuselage can be constructed extremely strongly.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side view of an agricultural tractor, Fig. 2 is a perspective view of the clutch housing and top cover, Fig. 3 is a perspective view of the bottom cover, and Fig. 4 is a perspective view of the bottom cover. The figure is a vertical sectional view of the main part, and Figure 5 is A-A in Figure 4.
6 is a cross-sectional view of the conventional example, and FIG. 7 is a side view of the same. 3...Clutch housing, 7...Front axle case, 11... ...Propeller shaft, 12゜16...Horizontal hole, 13...
Top cover, 14... Bottom cover, 15...
...Front axle removal case.

Claims (1)

[Scope of utility model registration request] In a tractor having a machine base 2 protruding from the front part of the machine body, an engine 1 mounted on the machine base 2, and a front axle case 7 provided at the lower part, a clutch housing 3 provided at the rear of the engine 1 is provided. The clutch housing 3 has a U-shaped frame with an open bottom, and an upper cover 13 that covers the upper surface of the propeller shaft 11 and reaches the front axle case 7 is connected to the front lower part of the clutch housing 3. A propeller shaft cover for an agricultural four-wheel drive tractor, characterized in that a series of lower covers 14 are removably attached to the lower part of the clutch housing 3, the upper cover 13, the propeller shaft extraction case 15, and the front axle case 7. .