JPH0439276Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention protects the beam extension width detection part from the outside to prevent damage in the outrigger device of work equipment such as aerial work vehicles. This invention relates to an outrigger device that does not interfere with the outrigger extension width detection function.

[Prior art and its problems]

Conventionally, painting the walls of high-rise buildings and large structures,
For aerial work vehicles, crane vehicles, etc. that perform work such as installing various equipment such as signboards at high places or performing electrical work, a beam extends from the side of the vehicle body to maintain stability during work. It is usually equipped with an outrigger device.

As shown in FIG. 3, this outrigger device includes a beam outer cylinder 20 that is fixed to the body of an aerial work vehicle, etc., and a beam outer cylinder 20 that is extendable and retractable by a pressure cylinder or the like within this beam outer cylinder 20 and is extendable to the outside of the beam. A beam 21 that can extend from both sides of the tube 20 and this beam 2
1 and a support leg 22 that is connected to the ground and is connected to the ground. The projecting width of the beam 21 is selected as appropriate depending on the work situation (the position of the work surface, the weight of various equipment, the difficulty of the work, etc.).
In reality, a detector (such as a limit switch) 23 for detecting the overhang width of beam 1 is provided protruding from the top, bottom, or side surface of the beam outer cylinder 20. In this way, with a structure in which the detector 23 and the like are exposed outside the beam outer cylinder 20, there is a risk of colliding with an obstacle during work or when the vehicle is running.
If the detector collides with these obstacles, there is a great possibility that the detector 23 will be damaged. Also, this beam outer cylinder 2
In an outrigger device in which a detector 23 is provided outside the upper surface of the sensor 0, the actual situation is that a case 24 is provided to cover the detector 23 to protect the detector 23.
Such a structure has problems such as unnecessary unevenness formed on the beam outer cylinder 20, which is undesirable in terms of design.

[Means and actions for solving problems]

In view of the above-mentioned problems, the present invention is an outrigger for a working machine that includes a beam outer cylinder fixed to the machine body, and a beam that is extendable and retractable within the beam outer cylinder and can be extended to both sides of the beam outer cylinder. In the device,
A detector for detecting the extension width of the beam is provided inside an adjacent beam outer cylinder, and an actuator that comes into contact with the detector is provided at a position corresponding to the detector on the outer surface of the beam. Therefore, a detector such as a limit switch is built into the beam outer cylinder without providing an unnecessary cover on the outside of the beam outer cylinder, thereby effectively protecting the detector and preventing the detection function of the detector from being impaired. It is an object of the present invention to provide an outrigger device that avoids this.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows an outline of an aerial work vehicle equipped with an outrigger device according to the present invention.

This aerial work vehicle 1 is equipped with a turntable 2 on a movable trolley, and the base of a telescopic boom 3 is pivotally supported on the turntable 2. A platform 4 is pivotally supported, and the work vehicle rides on this platform 4 to perform predetermined work such as painting a high-rise structure or installing various equipment at high places.

5, 5 is an outrigger device according to the present invention,
In order to maintain the stability of the vehicle body during work, two units are provided at the front and rear of the vehicle body 1a. The detailed structure of the outrigger devices 5, 5 will be explained with respect to the front outrigger device 5. 6, 6 are the vehicle body 1.
A pair of beam outer cylinders are fixed to the beam outer cylinder 6, and the beam outer cylinder 6 has left and right beams 7, 7, which will be described later, at one end.
The openings 61, 61 into which the
(welded with
7, 7 expand and contract within the beam outer cylinders 6, 6 by a hydraulic cylinder (not shown).
It is a left and right beam that can be extended to both sides.
8, 8 are support legs connected to the side ends of the beams 7, 7 (these support legs are configured to be raised and lowered by a predetermined length using a hydraulic cylinder, etc.); 9, 9;
is a base provided at the base of the support legs 8, 8.

Reference numerals 10 and 10 indicate detectors (a limit switch was adopted in this embodiment) for detecting the overhanging width of the beams 8, 8, and by coming into contact with cam plates 11, 11 (to be described later), the overhanging width of the beams 7, 7 is detected. (amount)
It's starting to detect. This detector 10,1
0 is the side edge of the beam outer cylinders 6, 6 near the covers 62, 62, and two terminals are provided on each bracket 65 attached to the inside of the adjacent beam outer cylinders 6, 6, and the terminals thereof are connected to the partition plate 63. perforation 6 formed in
4 facing the other beam 7, 7 (Fig. 2b).

Reference numerals 11 and 11 indicate cam plates (actuators) that come into contact with the puncture detectors 10 and 10. This cam plate 11, 11
is the outer surface of the beams 7, 7 and the detector 1
Two pieces of different lengths are attached in the horizontal direction at positions corresponding to 0 and 10, respectively.

In this embodiment, two limit switches are employed as the detectors 10, 10 for the extension width of the beams 7, 7, but the number is not particularly limited, and the cam plates 11, 11 and In this connection, an appropriate number of limit switches are selected in order to vary the extension width of the beams 7, 7, and other limit switches, such as a photo sensor, may be used in place of this limit switch. Further, the actuator is not limited to the cam plates 11, 11 only.

Since the present invention is configured as described above, first, the aerial work vehicle 1 is moved to the target work site, and upon arriving at the work site, the hydraulic cylinder in the outrigger device 5 is driven to fix the vehicle body 1a on the road. Therefore, the beams 7, 7 are extended laterally, and the support legs 8 are lowered to be held horizontally on the vehicle body 1a. At this time, the projecting width (amount) of the beams 7, 7 is
It is detected when the detectors 10, 10 come into contact with the detector 1. That is, the detection signals from the detectors 10, 10 blink a lamp provided on an operation panel, etc., to inform the operator, etc. of the projecting width of the beams 7, 7.

In addition, in terms of structure, the detectors 10, 10 of the present invention are installed in the adjacent beam outer cylinders 6, 6, so that the detectors 10, 10 do not collide with external obstacles when the vehicle is running. Therefore, damage to the detectors 10, 10 is prevented and the protection function is improved. Furthermore, there is no need to provide a cover or a case for covering and protecting the detectors 10, 10 on the outer surfaces of the beam outer tubes 6, 6, making design, assembly, etc. very easy.

[Effect of idea]

As described above, the present invention provides an outrigger device for a working machine that is equipped with a beam outer cylinder fixed to the machine body and a beam that is expandable and retractable within the beam outer cylinder and can be extended to both sides of the beam outer cylinder. A detector for detecting the extension width of the beam is provided inside an adjacent beam outer cylinder, and an actuator that comes into contact with the detector is provided on an outer surface of the beam at a position corresponding to the detector. As a result, there is no risk of any obstacle colliding with the detection part of the beam extension width when the work vehicle is running, as was the case in the past, and the detector such as a limit switch that detects the beam extension width can be connected from the outside. It protects the beam from damage, eliminates damage, does not interfere with the outrigger extension width detection function, and eliminates the need to provide unnecessary covers or cases on the outside of the beam outer cylinder, which is extremely advantageous in terms of design. has.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an aerial work vehicle equipped with an outrigger device according to the present invention, FIG. The enlarged end view, FIG. 3, is an explanatory diagram of a conventional outrigger device. 1...Aerial work vehicle, 2...Turntable, 3
... Telescopic boom, 4 ... Workbench, 5, 5 ... Outrigger device, 6, 6 ... Beam outer cylinder, 61, 61
... opening, 62, 62 ... cover, 63 ... partition plate, 64 ... perforation, 65 ... bracket, 7,
7...beam, 8,8...support leg, 9,9...base, 10,10...detector (limit switch),
11,11...Cam board.

Claims (1)

[Scope of utility model registration request] In the outrigger device of a working machine, which is equipped with a beam outer cylinder fixed to the machine body and a beam that is expandable and retractable within the beam outer cylinder and can be extended to both sides of the beam outer cylinder, An outrigger device characterized in that a detector for detecting the extension width of the beam is provided inside, and an actuator that comes into contact with the detector is provided at a position corresponding to the detector on the outer surface of the beam. .