JPS6223306Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a protection device for hydraulic pipes for working machinery, etc. in agricultural tractors. The object of the present invention is to provide a protection device that can provide reliable protection at low cost.

The present invention will be explained based on the drawings. In FIG. 1, which is a partial left side view of a tractor, 1 is an engine, and a mounting flange 2 is fixed to the rear end of the engine 1. A clutch housing 3 is disposed on the rear side of the engine 1, and an outward connecting flange 4 is provided at the front end of the clutch housing 3. This connecting flange 4 and the mounting flange 2 of the engine 1 are connected to each other by bolts, etc. connected by. and the rear surface 4 of the connecting flange 4 of the lower part of the clutch housing 3.
Immediately behind the clutch housing 3, for example, a high-pressure side hydraulic pipe 5 for a working machine is arranged so as to cross the lower side of the clutch housing 3 from side to side, as shown in FIG. 2, which is a cross-sectional view of FIG. There is. The width l over which the connecting flange 4 projects downward is at least larger than the outer diameter of the high-pressure side hydraulic pipe 5, so that the connecting flange 4
completely covers the high pressure side hydraulic pipe 5.

The tractor shown in FIG. 1 is an example of a tractor in which a high-pressure side hydraulic pipe 5 for a working machine or the like is arranged so as to pass under the clutch housing 3. It is very practical when adopted. That is, the tractor shown in FIG. 1 has both a first hydraulic pump 6 for hydraulic lift and power steering and a second hydraulic pump 7 for working equipment installed on the left side of the engine 1, and a clutch housing located below the front of the left step 8. 3 Install a flow divider 9 on the side wall that distributes high-pressure oil to the hydraulic lift and power steering, and install the flow divider 9 on the right step 10.
A hydraulic pressure outlet 11 for the work machine is attached to the front lower part of the machine. In other words, when installing a work machine on a tractor, the hydraulic pipe is connected to the hydraulic outlet 11 so that it is easy to connect the hydraulic pipe on the work machine side to the hydraulic outlet 11 (so that the flow divider 9 does not get in the way of the work). 11 is attached to the side wall of the clutch housing 3 opposite to the flow divider 9.
Therefore, the second hydraulic pump 7 on the left side of the engine 1
A high pressure side hydraulic pipe 5 for sending high pressure oil from the right side hydraulic outlet 11 of the clutch housing 3
is bent downward in the middle, and then passed under the clutch housing 3 so as to cross the clutch housing 3 from side to side. The portion of the high-pressure side hydraulic pipe 5 passing under the clutch housing 3 is covered on the front side by a connecting flange 4, as clearly shown in FIG. Note that the low-pressure side hydraulic pipes 12 and 13 connected to the inlet sides of the first and second hydraulic pumps 6 and 7, respectively, are bent downward in the middle and extend rearward along the lower edge of the left side of the clutch housing 3, and are connected to the strainer etc. The high-pressure side hydraulic pipe 14, which is connected to the outlet side of the first hydraulic pump 6, is bent downward in the middle, extends rearward along the lower left edge of the clutch housing 3, and is connected to the flow divider 9.
leading to. 15 is a high-pressure side hydraulic pipe for sending oil from the flow divider 9 to the power steering; 16 is a low-pressure side hydraulic pipe for returning oil returned from the power steering to the strainer inlet side; 1
7 is a hydraulic pipe on the high pressure side for sending oil from the flow divider 9 to the hydraulic lift.

The advantages of the present invention are listed below.

(1) The high-pressure side hydraulic pipe 5 for the working machine located below the clutch housing 3 can be reliably protected. That is, since the front surface of the high-pressure side hydraulic pipe 5 is covered by the connecting flange 4 of the clutch housing 3, which is made of a strong material, damage to the high-pressure side hydraulic pipe 5 due to contact with uneven ground, etc. can be reliably prevented. Can be done.

(2) The cost is not high. That is, instead of providing a special protection device to protect the high pressure side hydraulic pipe 5, the connecting flange 4 of the clutch housing 3
Since it is protected using , the cost is not high.

If the high-pressure side hydraulic pipe 5 is fixed to the clutch housing 3 with a suitable hook member, the hydraulic pipe 5 can be held in a stable state.

[Brief explanation of the drawing]

Figure 1 is a partial left side view of an agricultural tractor equipped with a protection device according to the present invention, and Figure 2 is a partial view of the -
FIG. 1...Engine, 3...Clutch housing,
4... Connection flange, 5... High pressure side hydraulic pipe (hydraulic pipe for work equipment, etc.).

Claims (1)

[Scope of utility model registration request] In an agricultural tractor in which a hydraulic pipe for a working machine, etc. is arranged so that a part of the pipe crosses the lower side of the clutch housing from side to side, an outward connecting flange is provided at the front end of the clutch housing connected to the engine, and the connecting flange is attached to the clutch housing. An agricultural tractor characterized in that the hydraulic pipe section is disposed immediately behind the rear surface of the lower part, and a connecting flange covers the front surface of the hydraulic pipe section that crosses the lower side of the clutch housing from side to side. Protection device for hydraulic pipes for working machines, etc.