JPH0214279B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a platform for an aerial work vehicle, and is particularly effective when the object to be worked on is columnar, such as a utility pole or a chimney. Regarding.

(Prior art) Conventional aerial work vehicles are mainly used for ship hull repair work, painting work, etc., and the platform attached to the tip of the boom is shaped like a rectangular box. It is common for there to be. Therefore,
When the object to be worked on is a wall surface, there is no problem and the predetermined work can be performed continuously along the plane.

(Problem to be solved by the invention) However, when working on a columnar object such as a telephone pole or a chimney, since the platform is square, it is difficult to work on the object only from one direction. can't do it. Therefore, when working on the opposite side, you have to change the position of the platform (position of the vehicle) or work in an awkward position, but in reality, you have to change the position of the platform. This is not easy, and working in an awkward position is dangerous. Therefore, in order to solve the above problems, the present invention has as its technical problem the formation of a platform so as to surround a columnar workpiece.

(Means for solving the problem) The technical means for solving the above problem is that the platform of the aerial work vehicle has a plurality of platforms arranged so as to form a space in the center for taking in the workpiece. It consists of floorboards with handrails, and these floorboards can be opened and closed in sections in the horizontal plane.

(Function) Therefore, for example, when performing wiring work or repair work on utility poles, the floor plate of the platform can be expanded horizontally from its dividing surface, and the platform can be moved as appropriate. After the utility pole is guided into the space, the floor plate is closed, and the platform is formed to completely surround the utility pole. As a result, a worker can freely walk around the utility pole and perform wiring work or repair work at a desired location.

Example 1 Example 1 of the present invention will be specifically described below with reference to FIGS. 1 to 4.

In the figure, 1 is a truck-type aerial work vehicle, and a rotating frame 4 is mounted on the loading platform 2 via a rotating platform 3.
is installed so that it can be rotated horizontally. The base of a boom 5 configured to be extendable and retractable is attached to the swing frame 4 so as to be tiltable up and down by a pin 6.
A platform 9 is attached to the tip of the boom 5. The boom 5 is pivoted at one end to the revolving frame 4, and is tilted up and down by a lift cylinder 7 pivoted to the boom 5 at the other end. In FIG. 4, 8 is an outrigger for preventing the movement of the vehicle during work.

Next, the platform 9, which is the main part of the present invention, will be explained. As shown in the figure, the platform 9 in Embodiment 1 has a ring-shaped floor plate divided into left and right parts by horizontal rotation, and a columnar workpiece is taken into a central space and surrounded by the floor plate. It was designed to be obtained. That is,
The platform 9 has a rectangular fixed floor plate 10.
The movable floor plates 11 and 12 on the left and right sides have a semi-circular arc shape, thereby forming an annular shape as a whole. The fixed floor plate 10, which is formed by connecting a pair of upper and lower rectangular flat plates with front and rear vertical plates, is attached to the tip of the boom 5 with a pin 13 so as to be rotatable in the vertical direction. A handrail 14 arranged in a U-shape in plan is provided on the top.

On the other hand, the left and right movable floor plates 11 and 12 are horizontally rotatably attached to the ends of the fixed floor plate 10 via support pins 15 and 16 fixed to their bases, respectively, and are fixed to the support pins 15 and 16. sector gears 17 and 1 that are meshed with each other.
8 and rotated synchronously. An opening/closing cylinder 19 for opening and closing the movable floor plates 11 and 12 is disposed horizontally between the upper and lower flat plates of the fixed floor plate 10, and one end of the opening/closing cylinder 19 is pinned to a bracket 20 of the fixed floor plate 10. 21, and the other end is connected to one movable floor plate 12.
It is pivotally connected to a bracket 22 by a pin 23.

Handrails 24 and 25 are provided on the movable floor plates 11 and 12 along their outer and inner peripheries, respectively, and ribs 11a and 12a are provided on the lower surfaces of the movable floor plates 11 and 12 to ensure strength. It is provided. Reference numeral 26 denotes a control box attached to the handrail 14 of the fixed floor plate 10, and levers installed on the control box 26 are used to rotate, extend/contract, and tilt the boom 5 and open/close the movable floor plates 11 and 12. is considered possible. Note that the platform 9 is always kept in a horizontal state by a level cylinder (not shown) that operates in response to the vertical movement of the boom 5.

This embodiment is configured as described above,
Therefore, when carrying out wiring work or repair work on the utility pole P, for example, the operator first operates the opening/closing cylinder 19 on the fixed floor plate 10 to reduce the opening and closing cylinders 19, thereby moving the left and right movable floor plates 11, By horizontally expanding and moving the boom 5, and then appropriately rotating, extending and contracting, and moving the boom 5 up and down, the utility pole P is placed in the central space between the left and right movable floor plates 11 and 12.
Move the platform 9 so as to take in the data.
In this state, when the opening/closing cylinder 19 is extended and the left and right movable floor plates 11, 12 are moved to close, the utility pole P is surrounded by the platform 9 as shown by the imaginary lines in FIG. Therefore, the worker can freely walk around the utility pole P and perform predetermined work.

Embodiment 2 As shown in FIG. 5, in Embodiment 2, two opening/closing cylinders 19, which are the means for opening and closing the movable floor plates 11 and 12 in Embodiment 1, are provided to open and close the movable floor plates 11 and 12 individually. It is configured as follows.

Embodiment 3 In addition, as shown in FIG. 6, in Embodiment 3, links 27 and 28 are fixed to support pins 15 and 16 in place of the sector gears 17 and 18 in Embodiment 1, and both links 27 and 28 are fixed to support pins 15 and 16. , 28 are linked through pins 29 and elongated holes 30, so that the left and right movable floor plates 11, 12 can be periodically rotated.

Example 4 Next, Example 4 will be explained based on FIGS. 7 to 9. In this embodiment 4, the fixed floor plate 10 attached to the boom 5 has a substantially horseshoe-shaped plane and a cross section T
The fixed floor plate 10 is formed in a groove shape, and left and right movable floor plates 11 and 12, each having a substantially semicircular planar shape and a T-shaped cross section, are slidably fitted into the fixed floor plate 10. Furthermore, rail guides 31 each having a substantially C-shaped cross section and having a handrail 14 on the upper surface are fixed to the inner and outer peripheral surfaces of the fixed floor plate 10. Left and right rails 32 and 33, which are formed in a letter shape and have handrails 24 and 25 on the upper surfaces of ribs, are slidably fitted together, and the tips of the rails 32 and 33 are connected to the movable floor plate 11, It is connected to 12. On the lower surface of the fixed floor plate 10, movable floor plates 11 and 1 are provided.
2 Left and right opening/closing cylinders 1 for sliding opening/closing
One end of the opening/closing cylinder 19 is pivotally connected to a bracket 20 of the fixed floor plate 10 by a pin 21, and the other end is pivotally connected to a bracket 22 of the movable floor plates 11, 12 by a pin 23.

That is, the platform 9 of the fourth embodiment is of a type in which only the tip side is opened and closed by moving the left and right movable floor plates 11 and 12 in and out of the fixed floor plate 10 in an arc shape.

Example 5 In Example 5, as shown in FIGS. 10 and 11, the fixed floor plate 10 is formed in a rectangular shape, and is provided with a rail guide 34 extending in the left-right direction on the top surface of its tip. . On the other hand, the left and right movable floor plates 11 and 12 are each formed in a semicircular arc shape, and are attached to the rail guide 34 of the fixed floor plate 10 via a rail 35 fixed to the lower surface of the base so as to be slidable left and right. Further, the left and right opening/closing cylinders 19 for opening and closing the left and right movable floor plates 11 and 12 are disposed between the fixed floor plate 10 and the movable floor plates 11 and 12, and one end is fixed to the fixed floor plate 10 and the other end is are fixed to the movable floor plates 11 and 12. That is, platform 9 of Example 5
The movable floor plates 11 and 12 are opened and closed by linearly horizontally moving left and right with respect to a fixed floor plate 10.

In the illustrated embodiment, the overall shape of the platform 9 is circular, but it can be changed to a rectangular shape. In other words, when the left and right movable floor plates 11 and 12 are opened, the platform 9 can be Any shape is acceptable as long as it is possible to accommodate a work object such as a utility pole in the central space and to surround the work object when closed. Further, the opening/closing drive of the movable floor plates 11 and 12 can be changed to a configuration in which a motor is used instead of a cylinder.

(Effects of the Invention) As described above, according to the aerial work vehicle of the present invention, the platform can freely walk around columnar work objects such as utility poles and chimneys while surrounding them with a platform. This allows work to be carried out from multiple directions, thus improving work efficiency and improving worker safety by eliminating the drawbacks of conventional square box-shaped platforms. can be achieved. The aerial work vehicle of the present invention is particularly effective for columnar work objects, but when the left and right movable floor plates are closed, it can be used for other general wall work, etc. in the same manner as before. .

[Brief explanation of drawings]

The drawings show embodiments of the present invention; FIG. 1 is a perspective view showing the platform of the first embodiment, FIG. 2 is a perspective view showing the opening/closing drive section of the movable floor plate, and FIG. 3 is the operation of the platform. 4 is a schematic side view showing the entire aerial work vehicle, FIG. 5 is a plan view showing the opening/closing drive section of the movable floor plate of the second embodiment, and FIG. 6 is the movable floor plate of the third embodiment. FIG. 7 is a plan view showing the platform of the fourth embodiment, FIG. 8 is a side view, and FIG.
10 is a plan view showing the platform of the fifth embodiment, and FIG. 11 is a side view. 1... Aerial work vehicle, 5... Boom, 9... Platform, 10... Fixed floor plate, 11, 12...
...Movable floor plate, 15,16...Support pin, 17,1
8...Sector gear, 19...Opening/closing cylinder.

Claims (1)

[Claims] 1 Consists of a plurality of floorboards with handrails arranged to form a space in the center for taking in work objects, and these floorboards can be divided and opened and closed in a horizontal plane, and when closed, it is possible to walk around the space. A platform for aerial work vehicles configured to allow communication.