JPH0628639Y2 - Aerial work vehicle - Google Patents

Description

TECHNICAL FIELD The present invention relates to an aerial work vehicle having a telescopic ladder and a lifter that moves up and down along the telescopic ladder.

Conventional technology Generally, when a building fire occurs, a ladder fire truck with a lifter equipped with a lifter that moves up and down along the ladder, or a ladder fire truck with a basket equipped with a basket at the tip of the ladder is put into the scene to extinguish the fire. I'm working. By the way, this type of fire engine has a mission to extinguish and evacuate people trapped in a fire building as well as extinguishing fire. For the rescue work with the former fire truck with a ladder with a lifter, bring the tip of the ladder close to the window hole of the building to be rescued,
After transferring to the lifter that has been raised to the tip of the ladder from the building window, drop the lifter along the ladder and rescue it to the ground. Also, in the latter ladder fire truck with basket,
Rescue work is performed by moving the basket at the top of the ladder back and forth between the building window hole and the ground by the ups and downs of the ladder.

Problems to be solved by the invention By the way, the above ladder fire truck with lifter descends and evacues sequentially with the lifter, so that rescue work can be performed efficiently and smoothly, but on the other hand, it is difficult for the sick person, the elderly, etc. If you are not physically free, there is a risk that it will take time to transfer to the lifter and you may slip and fall. Also,
When the upright inclination angle of the ladder became small, the lifter could not descend quickly due to its own weight, so it was not suitable for rescue work to lower floors.

Next, the ladder fire truck with basket allows people with poor physical mobility, such as the sick and the elderly, to easily transfer to the basket and evacuate safely, while the ladder's ups and downs allow the building window holes to move. Since it takes time to move the basket back and forth between the ground and the ground, rescue work to lower floors can be performed efficiently, but rescue work to higher floors is not suitable.

In short, both ladder fire engines have advantages and disadvantages, and for this reason,
There was a drawback that rescue work was not performed properly depending on the situation of the fire scene. In particular, the problem with recent building fires is that there are many cases where people who are late in the fire building can not wait for rescue due to smoke and jump off. The first step is to move the lifter and basket to the floor where the person in need of rescue is as fast as possible, transfer to the basket, evacuate to a safe place above, and then lower the lifter sequentially. . Therefore, in order to perform an appropriate rescue operation depending on the situation of the site, two vehicles, a ladder car with a lifter and a ladder car with a basket, are required, which requires a large number of workers and is costly. In a narrow space, it has the drawback of interfering with other fire engines and each other.

Means for Solving the Problems This invention has been made in view of the above-mentioned conventional problems,
In an aerial work vehicle equipped with a telescopic ladder and a lifter that moves up and down along the telescopic ladder, the uppermost ladder of the above-mentioned telescopic ladder is made longer than other unit ladders by an appropriate length so that the tip of the ladder also moves in and out. A one-touch type attachment / detachment jig is provided on this protruding end, and a basket that can be mounted using the one-touch type attachment / detachment jig is placed on the chassis. The remote control device for remotely operating the hydraulic cylinders for undulating and expanding and contracting the ladder in the upper control box and the electromagnetic switching valve of the hydraulic motor for turning, the tilt angle detection sensor, the control device, and the basket and the mounting arm It consists of hydraulic cylinders installed between the two, and the inclination of the basket is detected by the inclination angle detection device, and the hydraulic cylinder is expanded and contracted by the signal of the sensor to keep the basket in a balanced state. Providing the Basket balancing device for holding to provide aerial platforms, characterized in.

According to the present invention, a lifter that always moves up and down along the telescopic ladder, a remote control device and a basket balancing device are attached, and a one-touch type attachment / detachment jig is used at the tip of the telescopic ladder. It is possible to quickly move the lifter and basket to the destination floor by equipping them with an attachable basket and using either or both of them depending on the situation at the site. Evacuate to the ground with a remote control device and a basket equipped with a basket balancing device to evacuate people to the ground, such as a sick person and an elderly person, to evacuate to the ground more quickly and safely. You can do the work.

Embodiment FIG. 1 and FIG. 2 show an aerial work vehicle according to the present invention. In FIG. 1, (1) is a chassis of the aerial work vehicle, and (2).
Is a turntable arranged at the rear of the chassis (1), (3)
Is a ladder support frame installed on the turntable (2), (4) is a ladder correction frame pivotably attached to the ladder support frame (3), (5) is its axis, and (6) is a ladder. , This is the first stage ladder (6a), the second stage ladder (6a
b) shows a four-stage telescopic ladder consisting of a third stage ladder (6c) and a fourth stage ladder (6d). Each of the unit ladders (6a) to (6d) of the telescopic ladder (6) is gradually expanded into a U-shaped cross section and retractably accommodated, and the base of the first stage ladder (6a) is held on the ladder correction frame (4). I am letting you. The fourth stage ladder (6d) of this telescopic ladder (6) is replaced with other unit ladders (6a) to (6
It is made longer than c) so that the tip (6d ') remains protruding even when the ladder retreats. A one-touch type attachment / detachment jig (7) is provided at the tip (6d '). A hydraulic cylinder (not shown) for hoisting a ladder is provided between the frames (3) and (4), a hydraulic cylinder (not shown) for extending and retracting the ladder is provided on the ladder (6), and the turntable (2) and chassis (1) are provided. A hydraulic motor (not shown) for swinging a ladder is provided between and so that the ladder (6) can be raised, retracted, and swung. (8) is a lifter that moves up and down along the ladder (6),
It is mounted on rails provided on both sides of the ladder (6) and is moved up and down via a tow rope by a drive device such as a winding drum. (9) is the turntable (2)
A control box installed above, in which the manual switching valves for the hydraulic cylinders and hydraulic motors are installed in parallel, and the operator operates the operating levers of the respective manual switching valves on the turntable (2). The ladder (6) and the lifter (8) are operated by switching operation. Reference numeral (10) is a basket placed at a predetermined position on the chassis (1), and if necessary, this basket is attached to the tip (6d ') of the fourth stage ladder (6d) of the ladder (6) by the attachment / detachment jig (7). It is designed to be attached using. That is,
One end of the mounting arm (11) is pivotally attached to the upper part of the center of gravity of the basket (10), and the other end of the mounting arm (11) is attached with a one-touch type attachment / detachment jig ( The basket (10) is attached to the tip (6d ') of the fourth stage ladder (6d) of the ladder (6) by being hooked on 7). A remote control device and a basket balancing device are attached to the basket (10). Remote control baskets (10)
A switch box (not shown) is provided in each of them, and hydraulic cylinders for hoisting and extending the ladder (6) in the control box (9) on the turntable (2) and hydraulic circuits for turning hydraulic motors. The ladders (6) are appropriately undulated / extended / contracted / swirled by electrically connecting the respective electromagnetic switching valves provided therein and operating each switch of the switch box to remotely operate the ladder (6). The electrical connection is made by electrical wiring arranged along the ladder (6), and this electrical wiring is made at the tip (6d ') of the fourth stage ladder (6d) of the ladder (6) via an outlet plug or the like. One-touch connection / disconnection is possible. On the other hand, in this embodiment, the bucket balancer includes an inclination angle detection sensor (not shown) and a controller (not shown) arranged in a part of the basket (10), the basket (10) and the mounting arm ( 11) and a hydraulic cylinder (12) installed between it and the basket (1
The tilt angle detection sensor detects the tilt angle (0) and outputs it to the control device. The control device expands and contracts the hydraulic cylinder (12) based on the signal from the tilt angle detection sensor to constantly move the basket (10) to the ground. Hold it horizontally.
The hydraulic pipes of the hydraulic cylinder (12) are arranged along the ladder (6) like the electric wiring of the remote control device, and at the tip (6d ') of the fourth stage ladder (6d) of the ladder (6). One-touch connection / disconnection is possible via a plug or the like.

The aerial work vehicle of the present invention has the above-mentioned configuration, and how to use the lifter (8) and the basket (10) is appropriately determined according to the situation of the site.
First, when using the lifter (8), bring the tip portion (6d ') of the ladder (6) close to the window hole of the floor where the person seeking the rescue is located, and then move the lifter along the ladder (6). Rescue by moving (8) up and down. This does not include people who do not have physical freedom, such as sick people and old people,
Suitable for rescue work on high floors.

Next, when using the basket (10), the chassis (1)
The basket (10) placed on the top of the ladder (6) is quickly mounted using the one-touch type detachment jig (7) of the tip (6d ') of the ladder (6). Rescue is performed by going up and down between the floor on which the person seeking rescue is located and the ground by undulating motion. In this case, since the basket (10) is provided with a remote control device and a basket balancing device, the ups and downs, expansion and contraction, and turning of the ladder (6) can be remotely controlled in the basket (10) to bring the basket to the target floor. (10) can be moved quickly and accurately. This is suitable for rescue of a person with limited physical freedom such as a sick person or an elderly person, and for rescue work on a lower floor.

If a large number of people are lagging behind, or if some of them are not free, such as the sick and the elderly, then both lifter (8) and basket (10) Can also be used to rescue. In other words, the passengers are put in the basket (10) that has been delayed to escape and temporarily evacuated to a safe place at a high place, and then they are sequentially descended by the lifter (8).

As described above, according to the present invention, the remote control device and the basket balancing device are provided on the body of the ladder car including the telescopic ladder and the lifter that moves up and down along the telescopic ladder, and A basket that can be installed using a one-touch type attachment / detachment jig is placed on the tip of the ladder, and either or both of them are used according to the situation at the site. The lifter and basket can be moved quickly, and the lifter can be used to evacuate the ground to the ground, while the sick person, the elderly, and other people with limited physical freedom can be equipped with a remote control device and a basket balancer. By evacuating to the ground more quickly and safely with a basket, you can perform flexible rescue work, and perform lifesaving work appropriately according to the situation of the site. It can be expected that the work efficiency will be improved, and it can exhibit excellent performance as this type of aerial work vehicle. As a result, in the past, when performing work properly according to the situation at the site, it was necessary to have two ladder fire trucks with lifters and ladder fire trucks with baskets. It is possible to perform work, which brings about a remarkable effect in terms of labor saving and economical efficiency. Moreover, it is possible to speed up in terms of work efficiency, and moreover, it takes up less space than when two units are used. It is unlikely to interfere with other fire trucks even on roads and small places.

[Brief description of drawings]

1 and 2 are a side view and a plan view showing an embodiment of an aerial work vehicle according to the present invention. (1) …… Chassis, (2) …… Turntable, (3)…
… Expandable ladder, (7) …… One-touch attachment / detachment jig,
(8) …… Lifter, (9) …… Control box, (10) …… Basket, (11) …… Mounting arm,
(12) …… Basket balancing hydraulic cylinder.

Claims (1)

[Scope of utility model registration request] 1. In an aerial work vehicle equipped with a telescopic ladder and a lifter that moves up and down along the telescopic ladder, the uppermost ladder of the telescopic ladder is made longer than other unit ladders and the tip is It is designed to project even when the ladder moves in and out, a one-touch type attachment / detachment jig is provided at this protruding end, and a basket that can be attached using the one-touch type attachment / detachment jig is placed on the chassis. In the basket, a remote control device for remotely operating the hydraulic cylinders for hoisting and extending the ladder in the control box on the chassis and the electromagnetic switching valve of the hydraulic motor for turning, a tilt angle detection sensor, a control device, and a basket are provided. It consists of a hydraulic cylinder installed between the mounting arm and the basket. The tilt angle of the basket is detected by the tilt angle detection device, and the hydraulic cylinder is expanded and contracted by the signal of the sensor to make the basket. An aerial work vehicle, which is provided with a basket balancing device for always maintaining the balance in a balanced state.