JPH09255295A - Driver's cab guard link mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To vertically move three driver's cab guards simultaneously by arranging sprocket wheels coaxially with the rotary shafts of a driver's cab rear guard and the right and left driver's cab side guards, and connecting the sprocket wheels with a chain. SOLUTION: This order picker vehicle is provided with a driver's cab 4 mounted with a worker and vertically moved along a mast, and a driver's cab rear guard 8 and driver's side guards 9 are rotatably supported on the driver's cab side faces 7 via rotary shafts 13, 17 respectively. Sprocket wheels 12, 16 arranged on the side faces of the driver's cab rear guard 8 and the driver' s cab side guards 9 are connected by a chain 18. When the guard section 10 of the driver's cab rear guard 8 is lifted upward from below around the rotary shaft 13, the guard sections 14 of the right and left driver's cab side guards 9 are automatically lifted upward around the rotary shaft 17 via the chain 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driver's cab rear guard disposed on a driver's cab of an order picker vehicle and left and right driver's side guards at a storage position above a driver's cab or a position for protecting the surroundings of an operator. The present invention relates to a cab guard link mechanism that aims to move each cab guard up and down at the same time by using a link mechanism that does not require a large space for turning.

[0002]

2. Description of the Related Art Normally, as shown in each drawing, a driver's cab guard of an order picker vehicle has a driver's cab rear guard and two driver's cabs that rotate around two rotating shafts installed on both sides of an upper driver's cab guard. It is composed of three driver's cab guards, which are a driver's cab left-side guard and a driver's cab right-side guard, which rotate around a rotating shaft individually installed on the surface.

As an example, in the prior art of the driver's cab guard link mechanism using parallel links, FIGS.
The main method is to connect the cab rear guard 22 and the left and right cab side guards 23 by parallel links 24 with the rotary shaft 21 of the cab guard as shown in FIG. In addition, the gas spring 2 is provided between the cab 4 on the left and right of the cab and the cab 4.
5 are arranged, and each cab guard is fixed and held at the upper part and the lower part.

[0004]

When parallel links are used for the link mechanism of each cab guard in this manner, the link mechanism becomes large as shown in the figure, and
It was an obstacle to my work. Furthermore, there is a possibility that the operator's hand or finger may be caught when operating the link mechanism.

[0005]

The present invention comprises a vehicle body, a mast, and a driver's cab which moves up and down along the mast with a worker on the driver's cab. We arrange driver's cab guard formed by side guard,
In the order picker vehicle, the driver's cab guard can be moved up and stored around the rotary shaft on the side of the driver's cab when the operator gets on and off, and moves to the lower when the operator is working to protect the surroundings of the operator. Arrange the sprocket wheel coaxially with the rotation axis of each of the rear guard and the left and right cab side guards, connect the cab rear guard and the sprocket wheel of the left or right cab side guard with a chain hook,
A driver's cab guard link mechanism is formed by connecting the chain to the driver's cab side face with a gas spring, and this mechanism is used as an operator's cab guard link mechanism housed in a hollow pipe forming the driver's cab side face.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In each drawing, an order picker vehicle 1 includes a vehicle body 2, a mast 3 in the center of the vehicle body 2, and a driver's cab 4 that moves up and down along the mast 3 with an operator behind the vehicle body 2.

The cab 4 is formed with a head guard 5 on the upper part, a cab front wall 6 on the front part, and cab side faces 7 on the left and right. On the cab side faces 7 on the left and right, the cab rear guard 8, the left,
Alternatively, cab side face guards 9 are rotatably supported on the right cab side face 7, respectively.

As shown in FIGS. 1 to 4, a cab rear guard 8 for carrying out this embodiment is a guard portion 10, a boss portion 11 at the root of the guard portion 10 on each side, a sprocket wheel 12 outside the boss portion 11, and a boss. The right and left driver's cab side guards 9 similarly include a guard portion 14, a boss portion 15, and a rotary shaft 13 that pivotally supports the portion 11 and the sprocket wheel 12.
It is formed of a sprocket wheel 16 and a rotating shaft 17.

The link device, which is a feature of the present device, is one in which sprocket wheels 12 and 16 arranged on the same side of a driver's cab rear guard 8 and a driver's side guard 9 are connected by a chain 18, for example, a driver's rear part. Left and right cab side guards 9 when guard 8 is lifted from bottom to top
Is also capable of being automatically lifted up through the chain 18. Further, the same effect can be obtained when it is lowered from the upper part to the lower part, or when the cab side face guard 9 is moved up and down.

In addition to the above embodiment, the gas spring 1
It is also possible to dispose 9 on the chain connecting portion 20 and the driver's cab side surface 7, and to fix and hold each driver's cab guard above or below.

Further, as shown in FIGS. 1 to 4, it is also possible to form the cab side surface 7 as a hollow pipe and house the chain 18, the sprocket wheels 12, 16 and the gas spring 19 in the hollow pipe. is there.

[0012]

As described above, the driver's cab guard of the present invention is provided with the above-mentioned structure, so that a small link mechanism is used.
It is possible to move up and down the three cab guards at once. In addition, because of its small size, it can be stored on the side of the cab, eliminating the need to pinch your hands or fingers inside the link mechanism unlike the conventional parallel links, and it has a very clean appearance. Has become.

[Brief description of drawings]

FIG. 1 is a side view of a lower part of a cab guard embodying the present invention.

FIG. 2 is a rear view of the lower part of the cab guard embodying the present invention.

FIG. 3 is a side view of an upper portion of a cab guard embodying the present invention.

FIG. 4 is a rear view of the upper part of the cab guard embodying the present invention.

FIG. 5 is a side view of a lower portion of a conventional driver's cab guard.

FIG. 6 is a rear view of a conventional lower part of a cab guard.

FIG. 7 is a side view of the order picking vehicle.

FIG. 8 is a rear view of the order picking vehicle.

[Explanation of symbols]

 1 Order picker vehicle 2 Body 3 Mast 4 Driver's cab 5 Head guard 6 Driver's front wall 7 Driver's cab side 8 Driver's rear guard 9 Driver's cab side guard 10 Guard part 11 Boss part 12 Sprocket wheel 13 Rotating shaft 14 Guard part 15 Boss Part 16 Sprocket wheel 17 Rotating shaft 18 Chain 19 Gas spring 20 Chain connecting part 21 Rotating shaft 22 Driver's cab rear guard 23 Driver's side guard 24 Parallel link 25 Gas spring

Claims (3)

[Claims] 1. A vehicle body, a mast, and a driver's cab that moves up and down along the mast on which a worker is placed. The driver's cab rear guard and rear driver's side guards are formed on the driver's cab. An arbor guard is arranged, and the cab guard can be moved to the upper part when the operator gets on and off around the rotary shaft on the side of the cab and can be stored, and can be moved to the lower part when the worker is working to protect the surroundings of the operator. In the car, the sprocket wheels are arranged coaxially with the rotation axes of the cab rear guard and the left and right cab side guards, and the cab rear guard and the sprocket wheel of the left or right cab side guard are connected by a chain. A driver's cab guard link mechanism for connected order picker cars. 2. The cab guard link mechanism according to claim 1, wherein a gas spring is installed between the chain and the cab, and the cab guard is fixed and held at an upper portion and a lower portion. . 3. The driver's cab guard link mechanism according to claim 1 or 2, wherein the driver's cab side surface is a hollow pipe, and the driver's cab guard link mechanism is housed in the hollow pipe.