JPH0629172Y2 - Pipe mounting device for tractor hydraulic system - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an improved configuration of a pipe mounting device in a hydraulic operating device for operating a work machine mounted on a tractor.

[Prior art]

In general, a work implement such as a tiller is attached to the work implement attachment portion at the rear of the tractor, and a dump trailer and a wagon vehicle for collecting grass are attached and towed.

The working parts of these working machines are operated from a hydraulic device provided on the tractor body through an operating valve.However, when the working machine as described above is mounted on the tractor, the operating valve works together with the working machine. Of course, the hydraulic pipe attached to it is also integrated. The conventional hydraulic pipe is formed by bending a metallic pipe so as to follow the mounting shape of the working machine and the machine body, but it is difficult to mount due to its troublesome processing and high rigidity. Therefore, in recent years, a flexible and soft high-pressure oil pipe has been used.

However, this oil pipe is troublesome when it is fixed along the body of the machine with a band or the like at multiple appropriate places, and it is especially difficult to install it in a narrow space such as between the wheel of a tractor and a fender. Has a problem in that it is complicated and requires a lot of dangerous work, and the oil pipe is easily scratched due to contact with the machine due to vibration and loosening of the band, resulting in an accident due to oil leakage.

[Problems to be solved by the device]

The present invention has been made to overcome the above-mentioned conventional drawbacks, and an object of the present invention is to provide a flexible hydraulic pipe for communicating a hydraulic device of a tractor with a hydraulic operating device of a working machine connected to a rear portion of the tractor. It can be securely fixed and held in a wide range from the upper part of the rear edge to the front part of the lower edge, while a long guide rod extending forward and backward (a guide rod for supporting the hydraulic pipe)
Even if it is, there exists in providing the piping attachment apparatus in the hydraulic device of a tractor which can be firmly fixed to a support | pillar (support for a cabin).

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention detachably attaches to a tractor body a pillar located inside a rear end of a fander that covers a rear wheel, and at the same time, operates a working machine that is connected to the rear portion of the tractor body. In a tractor equipped with a governing hydraulic operating device, a long guide rod is fixed to the pillar so as to intersect the pillar obliquely at least in a side view, and a guide rod extending forward from the fixed portion is provided. A guide rod that extends substantially along the lower edge of the fan and extends rearward from the fixed portion is raised substantially along the rear edge of the fan, and is further connected to the hydraulic operating device. A flexible hydraulic pipe is fixed along the guide rod.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a tractor, which has an engine in front of the machine body and a lift support mechanism 3 including a lift arm and a lower link behind the driver's seat 2.

Reference numeral 4 denotes a rear wheel provided on an axle 7 (FIGS. 2 and 3) pivotally supported on an axle case 6 formed on both sides of the transmission chassis 5, and is provided on the upper and inner sides of the wheel 4. Fenders 9 are provided at small intervals, and the fenders 9 are fixed to and cover the side surfaces of the transmission chassis 5.

As shown in FIG. 3, a lower edge of the fender 9 is gradually provided with an upward slope 10 toward the upper side of the axle case 6,
Further, the rear edge 11 is bent at a steeper angle than this and is raised.

In such a tractor, when a working machine (not shown) such as a dump trailer or a wagon vehicle having a hydraulic opening / closing door is mounted, the mounting portion of the lifting support mechanism 3 is used.
Attach the work implement mounting rod 13 to the 12 by appropriate means, and
A hydraulic operating device 14 for hydraulically operating the platform, door, etc. of the working machine is mounted on the machine body with the configuration described below.

That is, the hydraulic operating device 14 is a column 15 that can be vertically extended.
A mounting seat 17, which can be attached and detached with a bolt 16, is provided on the outer side surface of the axle case 6 at the lower part (Figs. 3 and 4), and
An operating tool 20 including a hydraulic switching valve mechanism having a receiving seat 18 and an operating lever 19 is attached to the upper portion.

In addition, 21 is fixed in the middle of the pillar 15, and the hydraulic pipes 22, 2
3 is a guide rod for fixing and fixing with a band member 24, the shape of which is such that the front side of a long round bar extends along the slope 10 in front of the lower edge of the fender 9 and the rear side has a rear edge. 11
It is provided so as to be bent and risen substantially along with, and is provided so as to be located in the vicinity of along the lower shape of the fender 9.

Then, a hydraulic pipe for oil feeding, the rear end of which is fixed to the operation tool 20.
22 and the hydraulic pipe 23 for returning oil are respectively tightened along the guide rod 21 with a plurality of band members 24 at appropriate positions as shown in FIG. It is provided so as to be oriented in the forward direction.

Reference numeral 26 is a hydraulic take-out tool having an opening / closing valve that communicates with a hydraulic pump 27 provided in the machine body, and the connecting tools 28, 25 of the hydraulic pipe are releasably fixed to the connecting parts 28, 28 thereof, respectively.

Incidentally, 29 is a pedestal for mounting and connecting and supporting a column (not shown) for a cabin provided on the upper end of the column 15.

[Effect of device]

INDUSTRIAL APPLICABILITY As described above, the present invention removably attaches the support pillar located inside the rear end of the fan cover that covers the rear wheel to the tractor body, and controls the working machine that connects the support pillar to the rear portion of the tractor body. In a tractor equipped with a hydraulic operating device, a long guide rod 21 is attached to the column 15
The guide rods are fixed so as to intersect with each other obliquely at least in a side view, and extend forward from the fixed portion.
21 is substantially aligned with the lower edge 10 of the fan 9 and the guide rod 21 extending rearward from the fixing portion is provided with the guide 9.
Since the flexible hydraulic pipes 22 and 23 connected to the hydraulic operating device 14 are fixed along the guide rod 21 substantially along the rear end edge 11, the flexible hydraulic The tubes 22 and 23 can be securely fixed and held in a wide range from the upper part of the rear edge 11 of the fan 9 to the front part of the lower edge 10.

As a result, even if the tractor runs or vibrates, the hydraulic pipes 22,2
There is no possibility that 3 will come into contact with the tractor body and be damaged, so that problems such as oil leaks can be prevented.

Further, since the guide rod 21 can be fixed in a state where the guide rod 21 obliquely crosses the support column 15, even a long guide rod 21 extending forward and backward can be firmly fixed to the support column 15. It was

[Brief description of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 shows a perspective view of a rear portion of a tractor equipped with a hydraulic operating device. FIG. 2 is a rear view of the tractor, and FIG. 3 is a side view of the main part thereof. FIG. 4 is an exploded perspective view showing the configuration of the hydraulic operating device, and FIG. 5 is a sectional view showing a state in which the hydraulic pipe is fastened to the guide rod with a band. 1 ... tractor, 2 ... driver's seat, 3 ... lift support mechanism,
4 ... Wheels, 5 ... Transmission case, 6 ... Axle case, 7 ...
Axle, 9 ... Fender, 10 ... Inclination, 11 ... Rear edge,
12 …… Mounting part, 13 …… Mounting rod, 14 …… Hydraulic operating device, 15
…… Posts, 16 …… Bolts, 17 …… Mounting seats, 18 …… Receiving seats,
19 …… Operating lever, 20 …… Operating tool, 21 …… Guide rod, 22
…… Hydraulic pipe (for oil supply), 23 …… Hydraulic pipe (for oil return), 24…
… Band members, 25 …… Couplings, 26 …… Hydraulic ejectors, 27…
… Hydraulic pump, 28 …… connecting part, 29 …… stand.

Claims (1)

[Scope of utility model registration request] 1. A support pillar, which is located inside a rear end portion of a cover for covering a rear wheel, is detachably attached to a tractor body, and
In the tractor in which a hydraulic operating device that controls the operation of the working machine connected to the rear part of the tractor body is attached to the support column, a long guide rod (21) is attached to the support column (15) at least with respect to the support column (15). While fixing so as to diagonally intersect in a side view, the guide rod (21) extending forward from the fixing point is substantially along the lower edge (10) of the fan (9), and also from the fixing point. Install the guide rod (21) extending rearward in the
(9) Stands up substantially along the rear end edge (11), and further the flexible hydraulic pipes (22, 23) connected to the hydraulic operating device (14) are attached to the guide rod (21). A pipe mounting device for a hydraulic device of a tractor, which is fixed along the pipe.