JPS6246593Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to the structure of a hydraulic pressure outlet of a tractor.

The hydraulic system for raising and lowering the tractor's work equipment is installed at the rear of the vehicle body, and a hydraulic pressure outlet is provided at the front of the hydraulic cylinder located at the bottom of the driver's seat, to which the hose of the hydraulic equipment such as the front loader is connected. It was configured to extract hydraulic pressure for operation. However, in this structure, the hydraulic hose passes through the floor of the cabin, which impairs the comfort and aesthetics of the cabin, and there are also problems in that oil drips during piping and stains the floor surface.

In view of the above-mentioned circumstances, this invention provides a structure for a hydraulic pressure extraction part in which hydraulic pressure is extracted through a pipe that does not pass above the cabin floor.
Its features include an upper connecting member attached to the hydraulic pressure outlet of the hydraulic cylinder case on the rear wheel side portion of the transmission case and hydraulic cylinder case provided under the cabin floor of the tractor; A hydraulic extraction unit is installed below the extraction port and is connected by a pipe to a lower connection member that is attached to a lower attachment part provided on the transmission case and connected to a hydraulic hose that connects to hydraulic equipment such as a front loader. At the point. The embodiments shown in the drawings will be described below.

FIG. 1 is a schematic side view of the tractor, in which a hydraulic cylinder case 3 for lifting and lowering the work equipment is provided on a rear transmission case 2 below a seat 1a provided in a cabin 1, and a hydraulic cylinder case 3 for lifting and lowering the work equipment is provided at the front end of the rear transmission case 2. A bypass metal 4 is provided which has an outlet for extraction. FIG. 2 and FIG. 3 are an enlarged front view and a side view of the main parts, respectively. A hydraulic pressure extraction unit 8 formed by connecting three pipe bodies 7 is attached by its upper connecting member 5. The upper connection member 5 of the hydraulic pressure extraction unit 8 has a connection opening 1 at a position corresponding to the hydraulic pressure extraction port of the bypass metal 4.
1a, . . . , and these connection openings 11a, . . . communicate with the pipe bodies 7, . During installation, these connection openings 11a, . . . are overlapped with the hydraulic pressure outlet of the bypass metal 4. The lower connecting member 6 of the hydraulic pressure extraction unit 8 is placed on a holder 10 (lower mounting portion) that projects rearward from a bracket 9 that is bolted to the transmission case 2' of the tractor below the hydraulic pressure extraction port. In this state, each pipe body 7,
Connection openings 11b, which lead to... are open outward. Hydraulic hoses 12, . . . of hydraulic equipment such as a front loader are connected to these connection openings 11b, .

This hydraulic pressure extraction unit 8 is inserted downward through an opening 13 provided in the floor 1b below the seat 1a, the upper connecting member 5 is bolted to the bypass metal 4, and the oil pressure extraction unit 8 is inserted into the cabin through the inside of the floor 1b. It can be easily attached by bolting the downwardly protruding lower connecting member 6 of the bracket 1 to a receiver 10 provided on the bracket 9. The hydraulic oil supplied from the outlet of the bypass metal 4 to the connection opening 11a of the upper connection member 5 passes through the pipe body 7, reaches the lower connection member 6, and passes through the connection opening 11b to the hydraulic hose 12 of the hydraulic equipment. Supplied. In the illustrated example, there are three tubes 7, but the number of tubes and upper and lower connection openings is not limited to three.
Incidentally, after the hydraulic pressure extraction unit 8 is installed, it is preferable to cover the opening 13 of the floor 1b with a separately manufactured cover. In addition, the connection openings 11b of the lower connection member 6 of the hydraulic pressure extraction unit 8,...
When not in use, keep it closed with a suitable stopper.

As explained above, the structure of the hydraulic pressure outlet according to the present invention is such that the hydraulic pressure outlet of the hydraulic cylinder case is connected to the rear wheel side portion of the transmission case and the hydraulic cylinder case provided under the cabin floor of the tractor. A pipe body connects the upper connecting member to be attached to the lower connecting member to which a hydraulic hose is attached to the lower attachment part provided on the transmission case below the hydraulic pressure outlet and connected to hydraulic equipment such as a front loader. Since a hydraulic pressure extraction unit is provided, hydraulic pressure can be easily extracted to external hydraulic equipment. In other words, the area where the hydraulic cylinder is installed under the floor of the cabin has rear wheels on both sides, leaving only an extremely narrow space. Since the hydraulic extraction unit can be formed between the lower mounting part and the lower mounting part in advance to suit the surrounding conditions, it can be arranged vertically in the narrow space and easily mounted. The hydraulic hose connected to hydraulic equipment such as a front loader can be passed from the lower connection member to the bottom of the cabin floor or step, so it can be connected to the top of the cabin floor or step like a conventional hydraulic outlet. This solves the problem of hydraulic hoses that make the footing dangerous when getting on and off, and oil that drips and stains the floor or steps when installing and removing hydraulic hoses, improving the cabin's livability and detracting from its aesthetic appearance. Now I can do without it.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of a tractor to which the present invention has been applied, and FIGS. 2 and 3 are a front view and a side view of the main parts, respectively. 1...cabin, 1a...seat, 1b...floor, 2...rear transmission case, 2'...mission case, 3...hydraulic cylinder case, 4...
...Bypass metal, 5... Upper connection member, 6...
Lower connecting member, 7...pipe body, 8...hydraulic extraction unit, 9...bracket.

Claims (1)

[Scope of utility model registration request] The transmission case and the rear wheel side portion of the hydraulic cylinder case provided under the cabin floor of the tractor include an upper connecting member attached to the hydraulic pressure outlet of the hydraulic cylinder case; A hydraulic extractor characterized in that a hydraulic extractor unit is provided, which is connected by a pipe to a lower connecting member attached to a lower mounting part provided on a case and to which a hydraulic hose is connected to a hydraulic device such as a front loader. Department structure.