JP3269753B2 - Steering wire tensioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pulley fixing device for attaching a steering wire attached to a mass upper beam of an order picking vehicle.

[0002]

2. Description of the Related Art In the prior art, a pulley to which a steering wire is applied is fixed to a mass upper beam via a bracket.

[0003]

In the above prior art,
When the steering wheel is turned, the steering wire may become slack, and the steering wire may come off from the pulley.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has a mast erected on a vehicle body, and a cab that moves up and down along with the fork along the mast. In an order picking vehicle configured to transmit a steering angle of a steering to a steered wheel of the vehicle body by a steering wire, two pulleys are rotatably provided to a mast upper beam of the mast via a plate material, and the two pulleys are provided via the two pulleys. The steering wire is disposed, and a center portion of the plate is provided so as to be rotatable with respect to the mass upper beam, and a spring is disposed between both ends of the plate and the mass upper beam. A steering wire tensioner is provided.

[0005]

According to the present invention, the tension of the steering wire can always be kept constant.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An order picking vehicle according to the present invention will be described with reference to the drawings.
Is a mast standing upright behind the vehicle body 1, 3 is a driver's cab that moves up and down along the mast 2, 4 is a fork fixed below the cab 3, 5 is an upper beam installed above the mast 2, 6 is a front of the cab 3 The steering arranged in the center is shown.

When the driver turns the steering wheel 6 when turning the order picking vehicle, the driver turns the steering wheel 6 to turn the steering wheel.
Through a sprocket wheel 7 arranged coaxially with the steering wheel 6 on the rear surface, the power is transmitted to a steering wire 9 having a chain 8 only at a contact portion of the sprocket wheel 7 on the rear surface of the cab 3. The moved steering wire 9 is attached to the left and right pulleys 10 and 1 installed on the upper beam 5.
1 to the vehicle body 1 to turn the steered wheels.

In the case of this embodiment, the left pulley 10 is pulled downward by the steering wire 9 when the steering wheel is turning right, and at the same time the contact wire steering wire 9 of the right pulley 11 is loosened. Then, the right pulley 11 is pulled downward, and at the same time, the contact portion steering wire 9 of the left pulley 10 is loosened.

The embodiment of the present invention will be described with reference to an enlarged view of a part of a pulley in FIG. Below the vertical portion of the bracket 12, the center of the vertical plane of the L-shaped plate 13 in which the left and right pulleys 10 and 11 are rotatably mounted is rotatably mounted on a rotating shaft 14. Left and right springs 15 are disposed between the lower surfaces of both ends of the bracket 12 in the horizontal plane and the upper surfaces of both ends of the plate 13 in the horizontal plane. A cylindrical member 16 is fixed to the bracket 12 at the center of each of the left and right springs 15 and is covered with a hollow member 17 whose lower surface is hollow and whose lower surface is closed. The hollow member 17 is pressed from below the bolt 18 passing through the horizontal surface of the plate 13. The holes for the plate 13 bolts 18 should be screw holes in advance,
By rotating the bolt 18, the hollow member 17 can be pressed freely from the lower surface, and is fixed with the nut 19.

[0010]

According to the above-mentioned invention, when the steering wheel is turned, the steering wire does not slack, and the steering wire does not possibly come off the pulley.

[Brief description of the drawings]

FIG. 1 shows a front view of a steering wire tensioner.

FIG. 2 shows a side view of a steering wire tensioner.

FIG. 3 is a front view of the steering wire tensioner when turning left.

FIG. 4 shows a front view of a steering wire.

FIG. 5 shows a side view of an order picking vehicle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Mast 3 Driver's cab 4 Fork 5 Upper beam 6 Steering 7 Sprocket wheel 8 Chain 9 Steering wire 10 Left pulley 11 Right pulley 12 Bracket 13 Plate material 14 Rotating shaft 15 Spring 16 Cylindrical member 17 Hollow member 18 Bolt 19 Nut

Claims (1)

(57) [Claims] 1. A vehicle having a mast erected on a vehicle body and a driver's cab that moves up and down along with the fork along the mast. In an order picking vehicle having a transmission structure, two pulleys are rotatably provided on a mast upper beam of the mast via plate members, and the steering wire is disposed via both pulleys. The steering wire tensioner is provided so as to be rotatable with respect to the mass upper beam, and a spring is arranged between both ends of the plate material and the mass upper beam.