JPH0636056Y2 - Piping device for attachment in forklift - Google Patents

Description

TECHNICAL FIELD The present invention relates to a piping device for a hydraulically driven attachment which is attached to a forklift and can be raised and lowered.

2. Description of the Related Art As shown in FIGS. 5 and 6, a pair of left and right masts 2 are provided upright on a front portion of a vehicle body 1 of a forklift, and these masts 2 can be lifted by being guided by the masts 2. An elevating head 9 and a fork mounting portion 5 including a fork claw 3 and a backrest 4 are provided. The fork mounting portion 5 has a lift chain 7 having an intermediate portion wound around a sheave 6.
Is connected to the vehicle body 1 by means of the sheave 6
Is supported by a guide column 10 of an elevating head 9 attached to the working end of a lift cylinder 8 fixed to the mast 2, and the fork attachment portion 5 is moved up and down through a lift chain 7 as the lift cylinder 8 extends and contracts.

Further, various attachments 11 for sandwiching or holding the load corresponding to the shape of the load to be carried can be mounted on the fork mounting portion 5, and when the attachment 11 is a hydraulic drive type, The hydraulic device of the main body 1 and the attachment 11 are connected by a hydraulic hose 12. And
As shown in FIG. 8, the hydraulic hose 12 is suspended from the pulley 14 of the turning portion 13 provided on the guide column 10 of the elevating head 9 on the upper portion of the mast 2 in order to correspond to the elevating and moving of the attachment 11. It is provided in the state.

Problems to be Solved by the Invention The hydraulic hose 12 is a set of two, and the attachment 11
The number of operating parts increases, and the number increases. And each hydraulic hose
The hydraulic hose 12 is suspended between the masts 2 in front of the driver's seat 15 around a plurality of pulleys 14 mounted on the horizontal axis of the vehicle body 1 in the width direction.
There was a risk that the forward visibility from 15 would be narrowed and work efficiency would be reduced.

An object of the present invention is to solve the above problems and to provide a piping device for an attachment in a forklift truck that can secure a wide front view.

Means for Solving the Problems In order to solve the above problems, the present invention provides a mast standing on the front of the vehicle body, and a hydraulically driven attachment that can be lifted and lowered by being guided by the mast. In a piping device for an attachment in a forklift that is provided with a plurality of hydraulic hoses connected to the attachment through a turning portion provided at an upper portion, a parallel hose having an elliptical cross section in which the plurality of hydraulic hoses are covered with an exterior material. And a deflection pulley which is supported by a shaft in the axial direction of the vehicle main body and is fitted and guided along the major axis direction of the parallel hose along the radial direction in the deflection portion.

Action In the above configuration, the parallel hose formed by covering a plurality of hydraulic hoses with an elliptical cross section is fitted and guided by the turning pulley so that the major axis direction is along the radial direction of the turning pulley. The hose has a short diameter width,
A wider field of view from the driver's seat can be secured compared to the past.

Embodiment An embodiment according to the present invention will be described below with reference to FIGS. 1 to 4. The same members as those of the conventional example are designated by the same reference numerals, and the description thereof will be omitted.

21 is two hydraulic hoses (high pressure nylon hoses) 22A, 22B
Is a parallel hose in which the cross section is formed into an oval shape by covering it with an exterior material 23 such as vinyl. The parallel hose 21 connects the hydraulic device of the vehicle body 1 and the attachment 11.

At the turning portion 24 of the parallel hose 21, the guide column of the lifting head 9 is provided.
10 Horizontal shaft 25 protruding inward in the width direction and supporting the sheave 6
A diverting pulley 26 is rotatably supported by the parallel hose 21, and the parallel hose 21 is fitted around the diverting reel 26 such that the major axis of the parallel hose 21 extends along the radial direction of the diverting pulley 24. A guide groove 27 to be guided is formed.

The parallel hose 21 suspended from the turning pulley 26 is in front of the driver's seat 15 and has a major axis along the longitudinal direction of the vehicle body 1.
Only the short diameter width of the parallel hose 21 can be seen from the driver's seat 15. Therefore, the area where the view is blocked from the driver's seat 15 is 1 / though that of the conventional two hydraulic hoses 12 wound around and supported by the two reels 14 arranged in the width direction of the vehicle body 1. 2 and the field of view can be widened.

At the end of the parallel hose 21, the hydraulic hoses 22A and 22B are taken out from the exterior material 23, and the hydraulic hoses 22A and 22B are
It is used by attaching a fitting metal fitting (not shown) for a single hose conventionally used to the end of the.

Although the number of hydraulic hoses is two in the above embodiment, three or more hydraulic hoses may be covered to form a parallel hose, or a plurality of turning reels may be provided.

Further, although the turning portions are provided between the masts, they may be provided outside the masts.

As described above, according to the present invention, a plurality of hydraulic hoses are coated to form a parallel hose having an elliptical cross section, and the parallel hoses are formed by the deflecting pulley so that the major axis extends along the radial direction of the deflecting pulley. Since the parallel hose hung from this turning pulley has its major axis along the front-back direction of the vehicle body, the field of view from the driver's seat can be ensured wider than before, and the number of pulleys Can be reduced.

In addition, since a plurality of hose turning paths are formed by providing guide rollers on arcs with different radii at the turning parts, the hydraulic hoses passing through these turning paths are lined up in the front and rear direction of the vehicle body in front of the driver's seat to drive the hose. The view from the seat can be secured wider than before.

Further, at the end of this parallel hose, the hydraulic hoses 22A and 22B may be taken out from the inside of the exterior material 23 and ordinary fitting fittings may be used, and special fitting fittings are not required and can be manufactured at low cost.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention, FIG. 1 is a front view showing a turning portion, FIG. 2 is a cutaway perspective view of a parallel hose, and FIG. 3 is a partial cutting of the turning portion. FIG. 4 is a side view of the turning portion, and FIGS. 5 and 6 are a perspective view and a front view showing a conventional example, respectively. DESCRIPTION OF SYMBOLS 1 ... Vehicle main body, 2 ... Mast, 3 ... Fork nail, 5 ... Fork attachment part, 9 ... Lifting head, 11 ... Attachment, 12
... hydraulic hose, 14 ... pulley, 15 ... driver's seat, 21 ... parallel hose, 22A, 22B ... hydraulic hose, 23 ... exterior material, 24 ... turning part, 2
5 ... Horizontal axis, 26 ... Turning pulley, 27 ... Guide groove.

Claims (1)

[Scope of utility model registration request] 1. A mast is erected on a front part of a vehicle body, and a hydraulically driven attachment is provided which can be moved up and down by being guided by the mast. The mast is connected to the attachment from a vehicle body through a turning portion provided on an upper part of the mast. In a piping device to an attachment in a forklift provided with a plurality of hydraulic hoses, the plurality of hydraulic hoses are covered with an exterior material to form a parallel hose having an oval cross section. A piping device for an attachment in a forklift, comprising a turning pulley supported by a shaft and for guiding the fitting of the parallel hose along a major axis of the parallel hose in a radial direction.