JP2002167182A - Picking forklift - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a picking forklift capable of performing work more easily, improving safety, and allowing installation of a driving operation device comparatively freely by reducing a projection of the driving operation device to a driver's stand. SOLUTION: The driver's stand 3 is arranged movably upward/downward along a mast 2 stood in a vehicle body. In the driver's stand 3, a cargo handling device 4 having a fork 22 is installed, while at least the driving operation device 13 for driving operation of the vehicle body 1 is arranged between left and right masts 2a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a picking forklift having a structure in which a cab is raised and lowered together with a cargo handling device having a fork, and more particularly to a technique for further improving workability and safety.

[0002]

2. Description of the Related Art In general, among picking forklifts, there is a picking forklift having a construction in which a cab is provided so as to be able to move up and down and a cargo handling device is attached to the cab.

[0003] This type of picking forklift lifts and lowers a cab to a predetermined height and transfers a small amount of load on a rack shelf individually by transferring onto a pallet supported by a fork of a cargo handling device ( Hereinafter, picking work) can be performed.

FIG. 3 is a perspective view showing a schematic structure of such a conventional picking forklift, and FIG. 4 is a plan sectional view of a driver's cab portion of the forklift.

[0005] This conventional picking forklift,
A driver's cab 3 is provided on a pair of left and right masts 2 erected on a vehicle body 1 having a traveling mechanism so as to be able to move up and down.
, A cargo handling device 4 having a fork 22 is attached.

In FIG. 4, reference numeral 31 denotes a roller fixing frame;
Is a pair of lift brackets, 33 is a guide roller attached to the roller fixing frame 31 and the lift bracket 32, respectively, and 36 is a guide bar erected in parallel with the mast 2, and the cab 3 is The mast 2 and the guide bar 36 are moved up and down.

The driver's cab 3 has a pair of right and left columns 7 provided near the mast 2, and a flat wall portion 8 arranged between the columns 7.

A driving operation device 13 such as a steering handle 12 for turning control is provided on the cab 3 side of the wall portion 8, and a loading / unloading device 4 side of the cab 3 is provided on the cab 3 side.
A cargo handling operation device 15 for operating the cargo handling device 4 is provided upright.

On the other hand, the above-mentioned cargo handling device 4 includes a hydraulic motor 26 built in the shift carriage 19 and a pinion gear 2.
7, the shift carriage 19 is driven right and left along a rack 18 provided on one side surface of each of the floor 9 and the ceiling 10 of the cab 3, and a drive (not shown) built in the shift carriage 19. The sub mast 21 is rotationally driven by the source, and the fork 22 is moved up and down through the finger bar 23 by the hydraulic cylinder 28 and the sub lift chain 29 provided on the sub mast 21. Thereby, the direction of the fork 22 is changed in three directions, that is, the traveling direction of the vehicle body 1 and the left and right directions.

Further, on each of the right and left columns 7 of the cab 3,
One end of a protection guard 16 for preventing the operator from falling is swingably attached. After raising the cab 3 along the mast 2 to a required height, the operator can lift the protective guard 16 and then move on a pallet (not shown) supported by the fork 22 to perform the picking operation. .

[0011]

In the picking forklift having such a conventional construction, the cab 3 is provided with the flat wall portion 8 as described above, and the cab 3 is provided on the side of the cab 3 on the cab 3 side. A driving operation device 13 such as a steering handle 12 is provided on the vehicle, and the steering handle 12 and the like protrude toward the cab 3 side.

For this reason, the protruding portion of each of the driving operation devices to the cab 3 not only hinders the movement of the operator, but also may hit the handle 12 or the like abruptly during the operation and cause a bruise. In order to solve this inconvenience, each driving operation device 13 is arranged under many restrictions so that the amount of protrusion of the driving operation device 13 into the cab 3 is reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a substantially quadrangular unity space in a driver's cab so that work can be performed more easily and safety can be further improved. It is another object of the present invention to provide a picking forklift capable of relatively freely arranging the respective operation devices.

[0014]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a cab that can be raised and lowered along a pair of left and right masts erected on a vehicle body. In the picking forklift to which the cargo handling device having the above is attached, a driving operation device for performing at least a driving operation of the vehicle body is arranged on the cab between the left and right masts.

As a result, the projecting amount of the driving operation device to the cab is reduced, and a substantially square united space can be secured in the cab, so that the worker can easily move. The risk of bruising on the operating device is also reduced. In addition, since the depth between the left and right masts can be used sufficiently widely, the mounting arrangement of each driving operation device can be relatively freely performed.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an entire picking forklift according to an embodiment of the present invention,
FIG. 2 is a plan sectional view showing a driver's cab part of the picking forklift. Parts corresponding to those of the conventional example shown in FIGS. 3 and 4 are denoted by the same reference numerals.

The picking forklift of this embodiment has a mast having a pair of left and right masts 2a and one mast 2b disposed at a central front position between both masts 2a with respect to a vehicle body 1 having a traveling mechanism. A cab 3 is provided so as to be able to move up and down along the mast 2, and a cargo handling device 4 having a fork 22 is attached to the cab 3.

The driver's cab 3 is provided with a pair of right and left columns 7 and a wall 8 attached to the columns 7.

As a feature of this embodiment, as shown in FIG. 2, the wall surface portion 8 includes a projecting portion 8a projecting right and left outward from each column 7, and a projecting portion extending from each column 7 as shown in FIG. 8
It comprises a projection 8b projecting toward the left and right masts 2 at right angles to a, and a flat connecting portion 8c connecting the left and right projections 8b. A driving operation device 13 for mainly driving the vehicle body 1 is disposed in a recess surrounded by the protruding portion 8b and the connecting portion 8c. Therefore, the driving operation device 13 is disposed between the left and right columns 7 and the left and right masts 2a.

The driving operation device 13 raises and lowers the accelerator lever 11 for controlling the speed of the vehicle body 1, the steering handle 12 for turning control, the lift lever 34 for raising and lowering the cab 3, and the fork 22 of the cargo handling device 4. A sub-lift lever 35 and other instruments are arranged, and a storage table 38 is also secured.

Therefore, in the picking forklift having this configuration, the driving operation device 13 is disposed between the left and right masts 2a and has a small projecting amount to the driver's cab. Can be secured in the cab. For this reason, the worker M becomes easy to move, and the possibility that the worker M hits the driving operation device 12 and bruises is reduced. Furthermore, the driving operation device 1
3, since the depth between the left and right masts 2a can be used sufficiently widely, the driving operation device 13 can be arranged relatively freely.

Reference numeral 16 denotes a protective guard provided on each of the right and left columns 7 so as to be swingable to prevent the operator from falling. Reference numeral 33 denotes guide rollers attached to the protruding portion 8b and the connecting portion 8c of the wall portion 8, respectively. The cab 3 is moved up and down along the mast 2 by these guide rollers 33.

On the other hand, a cargo handling operation device 15 for operating the cargo handling device 4 is provided upright on the cargo handling device 4 side of the cab 3. The cargo handling device 15 is provided with a shift lever 39 for moving the fork 22 left and right, a rotate lever 44 for rotating the fork 22, and the like.

The cargo handling device 4 includes a rack 18 provided on one side of each of the floor 9 and the ceiling 10 of the cab 3.
The shift carriage 19 is moved left and right along with the drive of the hydraulic motor 40, and the rotation head 41 is moved up and down by the sub-lift chain 42 on the shift carriage 19, and the fork 22 is moved to the rotation head 41 via the finger bar 23 by the hydraulic pressure. The motor 43 is driven to rotate.

[0025]

According to the picking forklift of the present invention, the driving operation device provided on the cab is disposed between the left and right masts, so that the amount of protrusion of the driving operation device to the cab is reduced. In addition, it is possible to secure a substantially coherent space in the driver's cab, which makes it easier for the operator to move, and reduces the risk of the operator hitting the driving operation device and injuring the user.

Further, since the driving operation device is disposed between the left and right masts, the driving operation device can be disposed relatively freely.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an entire picking forklift according to an embodiment of the present invention.

FIG. 2 is a plan sectional view showing a cab portion of the picking forklift according to the embodiment of the present invention.

FIG. 3 is a perspective view showing the whole of a conventional picking forklift.

FIG. 4 is a cross-sectional plan view showing a cab portion of a conventional picking forklift.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle main body 2 Mast 3 Driver's cab 4 Cargo handling device 7 Prop 8 Wall surface 13 Operation device 15 Handling device

Claims (1)

[Claims] 1. A picking forklift in which a driver's cab is provided so as to be able to move up and down along a pair of left and right masts erected on a vehicle body, and a loading and unloading device having a fork is attached to the driver's cab. A picking forklift, wherein a driving operation device for performing at least driving operation of the vehicle body is disposed between the left and right masts.