JPH051474Y2 - - Google Patents

Description

[Detailed description of the invention] (1) Industrial application field The present invention relates to an aerial work vehicle that has a sign attached to the vehicle body indicating that the work is under construction.

(2) Conventional technology When carrying out work using an aerial work vehicle, the worker lowers the sign that is loaded on the aerial work vehicle, etc. and informs that construction is under way, etc. from the vehicle body. They were installed at a predetermined location at the rear of the vehicle, or an extra worker was brought in to act as a sign.

(3) Problems that the invention aims to solve However, in the past, signs loaded on aerial work vehicles, etc. had to be lowered to the ground during work and then loaded onto the vehicle body when moving. In addition to being complicated, the heavy weight of the signs makes it difficult to carry out the work.Also, when the signs are not loaded onto the vehicle, it is necessary to bring in an extra worker to take the place of the signs. In order to solve these problems, when trying to attach a sign to the rear end of an aerial work vehicle, it is difficult to install a sign on the rear end of an aerial work vehicle.
In order to prevent interference between the work platform and the sign due to the raising and lowering of the boom, a certain distance must be provided between the work platform and the sign, which caused the problem of increasing the overall length of the aerial work vehicle. .

(4) Means for solving the problem In order to solve the above problem, the present invention has a swing base mounted on the front side of the vehicle body, and a boom that is stored on the swing base toward the rear of the vehicle body. In an aerial work vehicle in which the base end of the boom is pivoted and a work platform is held in equilibrium at the tip of the boom, a storage position located immediately behind the retracted work platform and a storage position located at the rear end of the vehicle body and protruding to the rear of the vehicle body are provided. It is equipped with a marker device that is attached to a marker so that the marker can be slid in the front and back direction between the work position and the work position.

(5) Effect With the above configuration, when performing work using an aerial work vehicle, after sliding the sign of the marking device backwards and positioning it to the outside of the vehicle body, the boom is activated. When performing work on the workbench and moving, etc., after retracting the boom, the marker of the marker device is slid forward to position it on the rear end of the vehicle body.

(6) Examples Examples of the present invention will be described below with reference to the drawings.

Figure 1 shows a side view of the aerial work vehicle, with the vehicle body 1
Outriggers 2 that support the vehicle body 1 are provided at the front and rear of the left and right sides, and a swing base 3 is provided on the front side of the vehicle body 1.
is rotatably mounted, and the base end of a telescoping boom 4 stored toward the rear of the vehicle body 1 is pivotally supported on the swivel base 3, and the telescoping boom 4 is equipped with a telescoping device (not shown).
At the same time, the workbench 6 is held in equilibrium at the tip of the telescopic boom 4. A marking device 7 is attached to the rear end of the vehicle body 1.

2 and 3 show a marking device 7, in which a pair of guide rails 8 are attached to the rear end of the vehicle body 1 in parallel in the longitudinal direction, and each guide rail 8 has a pair of guide rails 8 attached to the rear end of the vehicle body 1 in parallel. Slide rails 9 are slidably attached to the outside of the vehicle body 1 along the vehicle body 1, and signs 10 are attached to these slide rails 9 to notify that construction is under way.
A slide rail 9 is fixed to the guide rail 8 at a working position where the sign 10 is projected to the rear of the vehicle body 1 and at a storage position located immediately behind the work platform 6 stored at the rear end of the vehicle body 1. A fixing pin 11 is attached to each.

With the above configuration, when performing work using an aerial work vehicle, the outriggers 2 are activated and the vehicle body 1 is
is supported by the outrigger 2, the slide rail 9 is unfixed by the fixing pin 11, and the operator pulls out the sign 10 to the rear of the vehicle body 1.
The slide rails 9 slide rearward along the guide rails 8, and as shown in FIG. rail 8
, then extend the luffing cylinder 5 to move the telescopic boom 4 upward, activate the telescopic device to extend the telescopic boom 4, move the work platform 6 to an arbitrary position, and move the telescopic boom 4 upward from inside the work platform 6. do the work. In addition, when moving the aerial work vehicle, etc., the telescoping device is operated to retract the telescoping boom 4, and the luffing cylinder 5 is contracted to move the telescoping boom 4 downward, and the telescoping boom 4 and work platform 4 are moved downward. After storing the slide rail 9 using the fixing pin 11
When the worker releases the fixation of the sign 10 and pushes the sign 10 forward of the vehicle body 1, the slide rails 9 slide forward along the guide rails 8, and as shown in FIG. A sign 10 is located immediately behind the workbench 6 which is stored at the rear end, and in this state, the slide rail 9 is fixed to the guide rail 8 by a fixing pin 11, the sign 10 is stored, and the outriggers 2 are stored.

In the above embodiment, a sign device in which the sign is manually slid is shown, but it is also possible to automatically slide the sign by providing a cylinder or the like.

(7) Effects of the invention As described above, the present invention has a sign placed at the rear end of the vehicle body in the longitudinal direction between the stowed position located immediately behind the stowed work platform and the working position that protrudes toward the rear of the vehicle body. Equipped with a slidably mounted sign device, there is no need for workers to load and unload signs on the vehicle body, there is no need to bring in an extra worker, and the overall length is longer. The present invention is effective in improving the workability of the aerial work vehicle.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view showing the running state of the aerial work vehicle, Fig. 2 is a side view of the marking device, Fig. 3 is a view taken in the direction of the arrow in Fig. 2, and Fig. 4 The figure is a side view showing the working state of the aerial work vehicle. 1...Vehicle body, 3...Swivel base, 4...Telescopic boom, 7...Signing device, 8...Guide rail, 9...
...Slide rail, 10...Signpost, 11...Fixing pin.

Claims (1)

[Scope of utility model registration request] In an aerial work vehicle, a swing base is mounted on the front side of the vehicle body, the base end of a boom stored toward the rear of the vehicle body is pivotally supported on the swing base, and a work platform is balancedly maintained at the tip of the boom. The present invention is characterized by comprising a sign device attached to the rear end of the vehicle body so that the sign can be slid in the front and rear direction between a storage position located immediately behind the stored workbench and a work position protruding to the rear of the vehicle body. An aerial work vehicle.