JPH0615997Y2 - Fork interval display - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a device for displaying a fork position in a forklift truck.

[Conventional technology]

A forklift truck attaches a pair of forks to a roller support along a mast attached to the vehicle body, and lifts and lowers the pair of forks together with the roller support to perform cargo handling work.The spacing between the pair of forks is adjusted according to the width of the load. It is necessary to move the pair of forks to the left and right along the roller support so that the distance between the pair of forks can be adjusted.

[Problems to be solved by the invention] In such a forklift truck, a driver sitting in the driver's seat of the vehicle body visually senses the distance between the pair of forks, but the pair of forks is located in front of the mast. Therefore, it is difficult for the driver to detect the distance between the pair of forks because the mast is an obstacle and it is difficult to visually recognize the pair of forks.

Therefore, an object of the present invention is to provide a fork position display device that allows a driver to easily detect the distance between a pair of forks while sitting in the driver's seat.

[Means and Actions for Solving Problems]

In the fork interval display device, the left and right forks 6, 6 are mounted movably left and right by the left and right motors 10, 10 along the roller support 3, and the display 12 is attached in front of the driver's seat 11 of the vehicle body 1. It is assumed that the display 12 has left and right fork position display portions 14 and 14 formed by arranging a large number of light emitting diodes 13 side by side, and a left switch 15 and a right switch 16,
A controller 17 for rotationally driving the left and right motors 10, 10 by the signals of the left and right switches 15, 16, respectively.
And left and right sensors 18, 18 for detecting the amount of rotation or the number of rotations of the left and right motors 10, 10 are provided, and the controller 17 is provided with left and right fork position display parts 14, 14 by detection signals of the left and right sensors 18, 18. The fork interval display device having a function of controlling the light emission of the light emitting diode 13 to a position proportional to the motor rotation amount or the rotation speed.

As a result, the display 1 provided in front of the driver's seat 11 of the vehicle body 1
The left and right fork position display portions 14 and 14 indicate the positions of the left and right forks 6 and 6 according to the light emitting state of the light emitting diode 13 so that the fork interval is sensibly increased.
Since it is possible to detect whether it is small, the driver can perceptually sense the fork interval while sitting in the driver's seat 11, the left switch 15 can drive the left motor 10 to move the left fork 6, and the right switch. 16 by the right motor 10
Since the right fork 6 can be moved by driving, the left and right forks can be moved independently or simultaneously.

〔Example〕

A mast 2 is mounted on the front part of the vehicle body 1, and a roller support 3 is mounted to be movable up and down along the mast 2, and the roller support 3 has vertical guide rods 4, 5
Is attached in the left-right direction, and a pair of forks 6, 6 are attached so as to be movable left and right along the upper and lower guide rods 4, 5, and the left and right nut members are attached to the rear surfaces of the pair of forks 6, 6. 7 are attached, and the left and right screw rods 8 screwed to the left and right nut members 7 are connected to the left and right motors 10 via the left and right gear groups 9, respectively.
By driving 0 and rotating the screw rod 8, the left and right forks 6 can be moved left and right to adjust the interval.

As shown in FIG. 3, a display device 12 is provided in front of the driver's seat 11 in the vehicle body 1. The display device 12 has a large number of light emitting diodes 13 arranged side by side as shown in FIG. The left and right fork position display portions 14, 14, and is provided with a left switch 15 and a right switch 16,
The left switch 15 and the right switch 16 are the left moving parts 15a, 1
6a and right moving parts 15b and 16b are pushed, and by pushing them, the left and right motors 10 are normally or reversely rotated and the left and right forks 6, 6 are moved leftward or rightward to change the fork interval. At the same time, the light emitting diodes 13 are provided on the left and right forks 6
The fork intervals are displayed by sequentially emitting light so as to correspond to the moving stroke of.

That is, as shown in FIG. 2, left and right switches 15, 16
Is connected to the left and right motors 10 and 10 via the controller 17 so as to rotate the motor 10 in the forward and reverse directions, and each motor 10 detects the amount of rotation or the number of rotations of a potentiometer or encoder. Each sensor 18 is attached, and the detection signal of this sensor 18 is fed back to the controller 17 so that the light emitting diodes 13 of the position display portions 14, 14 of the left and right forks are controlled to emit light to a position proportional to the rotation amount or the rotation speed. I am doing it.

In the controller 17, a stabilized power source, a speed adjusting volume, an LR contactor, an overcurrent prevention circuit, a D /
An A converter and the like are provided.

Because of this, the left and right fork position display portions 14,
By visually observing the light emitting state of the light emitting diodes 13 of 14, the driver can know the left and right fork intervals while sitting in the driver's seat 11.

The fork position display unit 14 may be digitally displayed.

[Effect of device]

The positions of the left and right forks 6, 6 are sensuously determined by the light emitting states of the light emitting diodes 13 of the left and right fork position display portions 14, 14 of the display 12 provided in front of the driver's seat 11 of the vehicle body 1, and the fork interval is sensibly sensed. Since it can be detected whether it is large or small, the driver can perceptually detect the fork interval while sitting in the driver's seat 11.

Therefore, whether the left and right fork spacing is sensibly large,
You can immediately detect if it is small and adjust the fork interval according to the size of the luggage.

Further, since the left switch 15 drives the left motor 10 to move the left fork 6, and the right switch 16 drives the right motor 10 to move the right fork 6, the left and right forks can be moved independently. You can do or move at the same time.

[Brief description of drawings]

1 shows an embodiment of the present invention, FIG. 1 is an explanatory view of a display, FIG. 2 is a display circuit diagram, FIG. 3 is a front view of a fork mounting portion, FIG. 4 is a front view, and FIG. It is an enlarged view of a fork moving part. 1 is a vehicle body, 3 is a roller support, 6 is a fork, 10 is a motor, 11 is a driver's seat, 12 is an indicator, and 14 is a fork position display section.

Claims (1)

[Scope of utility model registration request] 1. A fork gap in which left and right forks 6, 6 are mounted along a roller support 3 so as to be movable left and right by left and right motors 10, 10 and a display 12 is attached in front of a driver's seat 11 of a vehicle body 1. In the display device, it is assumed that the display 12 has left and right fork position display portions 14 and 14 formed by arranging a large number of light emitting diodes 13 side by side in the left-right direction, and has a left switch 15 and a right switch 16.
A controller 17 for rotationally driving the left and right motors 10, 10 by the signals of the left and right switches 15, 16, respectively.
And left and right sensors 18, 18 for detecting the amount of rotation or the number of rotations of the left and right motors 10, 10 are provided, and the controller 17 is provided with the left and right fork position display portions 14, 14 by the detection signals of the left and right sensors 18, 18. 2. The fork interval display device having the function of controlling the light emission of the light emitting diode 13 to a position proportional to the motor rotation amount or the rotation speed.