JPH0621803Y2 - Outrigger overhang width information transmission means - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an outrigger extension width information transmission means in an aerial work vehicle equipped with an outrigger, and in particular, detection of a tension width detector provided in each outrigger. The present invention relates to an outrigger overhang width information transmission means that reduces the number of slip rings when transmitting a signal to a regulation device and simplifies wiring at the same time.

[Background of the invention]

The aerial work vehicle is equipped with outriggers on the left and right sides of the undercarriage so that it can be extended outside the undercarriage to prevent the aerial work vehicle from falling over, improve the safety of the boom, and turn freely on the undercarriage. Equipped with a table, the turntable is equipped with a boom that can be undulated and expanded and contracted, and a regulation device that regulates the working state of the boom is installed at an appropriate place on the turntable. In general, the detection signal detected by the container is transmitted to the regulation device via a slip ring.

The slip ring has the tension width detector on the chassis side and the regulating device on the turntable side, and therefore is used to efficiently transmit the detection signal of the tension width detector.

[Prior art and its problems]

However, as described above, the transmission means of the detection signal between the tension detector and the regulation device provided in each outrigger in the conventional aerial work vehicle is formed via the slip ring, as described above. Since the conventional transmission method of the detection signal of the tension detector uses the number of wirings and slip rings corresponding to each tension detector, the number of overhangs for each outrigger has increased like today. In an aerial work vehicle equipped with an outrigger having a structure, not only the number of wires is increased, but also the cost is increased and maintenance is complicated due to the increase in the number of slip rings.

[Means for Solving the Purpose and Problem of Invention]

The present invention has been made in view of the above-mentioned problems, and an object of the present invention relates to an outrigger overhang width information transmission means in an aerial work vehicle equipped with an outrigger, and in particular, it is provided for each outrigger. It is to provide an outrigger overhang width information transmission means that reduces the number of slip rings when transmitting the detection signal of the overhang width detector to the regulation device and simplifies the wiring at the same time. Is equipped with
In addition, a boom is mounted on a turntable provided on the chassis so that it can be swung up and down, and the boom is extensible and retractable. The working state of the boom is controlled according to the load applied to the boom on the turntable and the protruding length of each outrigger. A high-level work equipped with a restricting device and transmitting a detection signal detected by a tension width detector mounted on each outrigger to the restricting device via a slip ring arranged between the chassis and the turntable. In the vehicle, a control device for sequentially selecting one or two tension width detectors from the tension width detectors at regular intervals between the tension width detectors and the slip ring and connecting them to the slip ring is provided. Set up.

[Action]

Since the configuration as described above is adopted, the control device sequentially selects one or two tension width detectors at fixed time intervals and connects them to the slip ring, so that the detection signal of each tension width detector is regulated. The number of wires and the number of slip rings for transmission to the device may be the minimum necessary, and therefore the cost is reduced, the maintenance is easy, and the safety is improved.

〔Example〕

An embodiment of the outrigger extension width information transmitting means according to the present invention will be described in detail below with reference to FIGS. 1 and 2.

FIG. 1 is a block diagram showing an outrigger extension width information transmitting means according to the present invention, and FIG. 2 is a circuit diagram showing a schematic configuration of the outrigger extension width information transmitting means.

In the figure, reference numerals 1a, 1b, 1c, and 1d denote outriggers 2a and 2 mounted on the left and right of the chassis 2a 'of the aerial work vehicle 2, respectively.
b, 2c, 2d (in this embodiment, an outrigger having a two-stage overhang is taken as an example), and the detection signals of the tension width detectors 1a, 1b, 1c, 1d are the control device 3 of the next stage. You will be prompted to enter.

The control device 3 comprises a timer 3a, a relay 3b operated by the timer 3a, and switches 4a and 4b which are switched by the relay 3b.

The input terminals A of the switches 4a and 4b,
As shown in FIG. 2, the lead ends of the tension detectors 1a, 1b, 1c, and 1d are connected to B, C, and D, respectively.

Further, the output ends a and b of the switches 4a and 4b of the control device 3 regulate the working state of a boom or the like mounted on the turntable 6 via slip rings 5a and 5b corresponding to the output ends a and b. Connected to the regulation device 7
Input terminals A, B and C, D of the control device 3
Is the tension width detectors 1a and 1b of the right and left outriggers 2a and 2b, and the tension width detectors 1c and 1d of the left and right outriggers 2c and 2d, and the relay 3b of the timer 3a.
Switches 4a and 4 that are switched at regular intervals by
The output terminals a and b are sequentially selected and alternately connected to the output terminals a and b.

By the way, the control device 3 includes switches 4a, 4b among the tension detectors 1a, 1b, 1c, 1d.
By switching between the output ends a and b, the tension width detector 1 of the front and rear outriggers 2a and 2b on the right side is connected.
a, 1b, left and right outriggers 2c, 2
A left / right discriminating means 8 for discriminating whether the width detectors 1c, 1d of d are provided, and the discrimination signal of the left / right discriminating means 8 is inputted to the regulating device 7 via the slip ring 8a. .

Hereinafter, the operation of the outrigger overhang width information transmitting means according to the present invention will be described based on the above configuration.

Tension width detectors 1a, 1 of the outriggers 2a, 2b, 2c, 2d mounted on the left and right front and rear of the chassis 2a 'of the aerial work vehicle 2.
Each detection signal detected by b, 1c and 1d is the timer 3a.
By the first actuation of the switches 4a, 4b which are switched at regular intervals by the relay 3b, the tension width detectors 1a, 1b of the right and left outriggers 2a, 2b are first detected.
The detection signal detected by b is transmitted to the input terminals A and B of the control device 3, and the output terminals a of the switches 4a and 4b,
b through slip rings 5a and 5b corresponding to b, and input to the regulation device 7 that controls the working state of the boom or the like mounted on the turntable 6, and then the relay 3 of the timer 3a.
By the second operation of the switches 4a and 4b that are switched by b, the detection signals detected by the tension detectors 1c and 1d of the left and right outriggers 2c and 2d are transmitted to the input terminals C and D of the control device 3, The switches 4a, 4
slip rings 5a, 5b corresponding to output ends a, b of b
Is input to the regulation device 7 that controls the working state of the boom or the like mounted on the turntable 6 via
Tension width detector 1 of each outrigger 2a, 2b, 2c, 2d
Conventionally, the number of slip rings 5a, 5b arranged in the circuit for transmitting the detection signals detected by a, 1b, 1c, 1d to the regulating device 7 for regulating the working condition of the boom or the like mounted on the turntable 6 is the conventional It can be configured with half the number, and wiring for that can be simplified.

Further, the detection signals from the front and rear outrigger width detectors 1a and 1b on the right side and the front and rear outriggers 2c and 2d on the left side transmitted to the regulation device 7 and the tension width detectors 1c and 1d from the left and right outriggers 2c and 2d, respectively. The detection signal is discriminated by the left and right discriminating means 8 and inputted to the regulating device 7, so that the regulating device 7
It is possible to easily identify which of the left and right outriggers 2a, 2b, 2c, 2d the detection signal that is reliably input to is.

In addition, the outriggers 2a, 2b, 2 in the aerial work vehicle
Since the removal of c and 2d is not changed once set, it is possible to transmit the tension detection signal to the regulation device 7 at a certain fixed time, and the present invention is very useful. It can be said to be expensive.

[Effect of device]

As described in detail above, the present invention is equipped with outriggers at the left and right front and rear of the chassis so that it can be freely extended, and a turntable provided on the chassis is provided with a boom that is undulating and retractable. A regulation device for controlling the working state of the boom according to the load applied to the boom and the overhang length of each outrigger is installed on the top, and the detection signal detected by the tension width detector equipped on each outrigger is detected on the undercarriage and the chassis. In an aerial work vehicle that transmits to the regulating device via a slip ring arranged between turntables, a certain time is required between each tension width detector and each slip width detector from each tension width detector. 1 or 2 for each
Since a control device for sequentially selecting one of the tension width detectors and connecting it to the slip ring is provided, the number of tension width tension steps of the outrigger becomes multi-stage as it is today, and even if the number of tension width detectors increases at the same time, The number of wires and the number of slip rings for transmitting the detection signal of the width detector to the regulating device may be the minimum necessary, so that the cost is reduced, maintenance is easy, and safety is improved. Have an effect.

[Brief description of drawings]

FIG. 1 is a block diagram showing an outrigger extension width information transmission means according to the present invention, and FIG. 2 is a circuit diagram showing a schematic configuration of outrigger extension width information transmission. 1a, 1b, 1c, 1d ... Tension width detector, 2a, 2b,
2c, 2d ... Outriggers, 3 ... Control device, 3a
… Timer, 3b… Relay, 4a, 4b… Switch, 5
a, 5b, 8a ... Slip ring, 6 ... Turntable, 7 ... Regulator, 8 ... Left / right identification means, A, B, C, D
… Input terminal.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiyoshi Hirata 3-11-20 Wakaoji, Amagasaki City, Hyogo Prefecture Kansai Electric Power Co., Inc. Research Institute (72) Inventor Osamu Furushima 2 Honjo Higashi, Osaka City 3-34, Kinki Electric Works Co., Ltd. (72) Inventor Masayoshi Abe 2-34-1, Honjohigashi, Oyodo-ku, Osaka City, Osaka Prefecture (72) Kinki Electric Works Co., Ltd. (72) Akihiko Ohira Shinji Tone-gun, Gunma Prefecture No. 414, Shimohara, Toho Sugawa, Todai Sumura, Aichi Vehicle Co., Ltd., Shinji Factory

Claims (1)

[Scope of utility model registration request] Claims: 1. Outriggers are provided on the left and right front and rear of the chassis so that they can be freely extended, and a turntable provided on the chassis is provided with a boom that can be undulated and extended, and a load applied to the boom on the turntable. And a regulation device for controlling the working state of the boom according to the overhang length of each outrigger, etc., and the detection signal detected by the tension width detector equipped on each outrigger is arranged between the chassis and the turntable. In an aerial work vehicle adapted to transmit to the regulating device via the slip ring, one or two is provided between the tension width detectors and the slip rings at a constant time from each tension width detector. An outrigger extension width information transmission means comprising a control device for sequentially selecting one extension width detector and connecting it to a slip ring.