JP2572842Y2 - Aerial work vehicle - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aerial work vehicle, and more particularly, to an aerial work vehicle used for ceiling work at a building construction site, such as a facility plumbing or an air-conditioning duct on an ascending and descending work table. The present invention relates to an aerial work vehicle equipped with an auxiliary lifting device that supports and lifts a material.

[0002]

2. Description of the Related Art Conventionally, an aerial work vehicle has been used for ceiling work in building construction, for example, piping of an air-conditioning duct, and a worker is placed on a worktable which can be raised and lowered and lifted to a work position.

[0003]

However, the above-mentioned high-altitude work vehicle can easily raise the worker to the work position, but cannot lift a long object such as an air-conditioning duct to the work position. Did not. For this reason, when lifting a long object, build a scaffold and lift it manually to the construction position, or use two high-altitude work vehicles and hang a long pipe etc. At the same time, it was raised and lifted. Further, even with an article that can be lifted to a construction site by one high-altitude work vehicle, it takes time and effort to lift the article onto the worktable. Therefore, the work efficiency was poor and many workers were required.

[0004] Even when the air-conditioning duct is not used,
When constructing a ceiling board, a lighting fixture, and the like, it is necessary to perform an installation work while supporting these materials by a worker, and it is necessary to perform the work by a plurality of workers.

In view of the above, it is conceivable to provide an auxiliary elevating device that moves up and down by a hydraulic cylinder on a work table so that various materials are held above the auxiliary elevating device. If you move it up and down,
When the eccentric load applied, joined to the load is directly hydraulic cylinders, particularly strength anxious der for the hydraulic cylinder is a weak structure lateral load is, or rotation of the radial direction of the cylinder rod Since there is almost no regulation, the handling is inconvenient because the held materials and the like may rotate unexpectedly. In addition, hydraulic cylinders
Is surrounded by one rectangular cylindrical guide post, and the guide post is
The rectangular cylindrical slide member to be
By lowering, the structure of raising and lowering the auxiliary lifting device
In the case of an uneven load, the
It is inexpensive, and the square cylindrical guide post is
The structure of the guide member guides the
It is required to have an assembly accuracy that is not affected by the assembly.

Accordingly, the present invention enables various materials for ceiling work to be easily lifted to a construction position in a stable state, is resistant to offset loads, and has a structure in which a guide column and a guide column are connected.
It is an object of the present invention to provide an aerial work vehicle equipped with an auxiliary lifting device capable of correcting the assembly accuracy of a ride member .

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention relates to a work at a high place in which an auxiliary lifting device which is raised and lowered by a hydraulic cylinder is provided on a worktable which can be raised and lowered on an upper portion of a base. In a car, the hydraulic series is
A pair of guide columns are vertically erected with a pair of sliders, and a pair of slide members vertically guided by both guide columns are vertically provided on the auxiliary lifting device, and one of the
Guide part where one slide member slides on the id column
The material is provided so that it can be moved in the horizontal direction.
A guide member on which the other slide member slides is fixedly provided .

[0008]

[Work] In the aerial work vehicle having the above structure, various materials for ceiling work can be placed on or held by the auxiliary elevating device, and can be raised to the construction position. At this time, since the pair of slide members are guided by the pair of guide columns on the work table, the auxiliary lifting device is maintained in a stable state even when a lateral load or a load in the cylinder radial direction is applied. Also, the guide member provided on one of the guide columns is horizontal.
The guide column and slide member
The mounting accuracy can be corrected.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings showing an aerial work vehicle provided with a long object elevating and holding device as an auxiliary elevating device. 1 is a perspective view of an aerial work vehicle, FIG. 2 is a front view thereof, FIG. 3 is a side view thereof, FIG. 4 is a cross-sectional view of a guide portion of an auxiliary lifting device, and FIG. It is a front view of the principal part.

In this aerial work vehicle 1, a work table 4 which is lifted and lowered by a scissor link mechanism 3 is provided above a movable base 2, and a long object lift mechanism 5 is provided on both sides of the base 2. On the upper surface of the work table 4, an elevating and holding device 6 for a long object is provided as an auxiliary elevating device.

The long object lifting mechanism 5 is provided on an upper part of a case 10 fixed to both ends of the base 2 so as to be rotatable, and is rotatably provided at a tip of the arm 11. And a fork 20.

The arm 11 includes a first sprocket 13 driven by a hydraulic cylinder 12, a second sprocket 14 fixed to a base of the arm 11, and a roller chain 15 bridged between the two sprockets 13. The rod 12 of the hydraulic cylinder 12
When the fork 20 is retracted, the fork 20 can be turned down to near the floor,
When the fork 20 is extended, the fork 20 is formed so as to be able to rotate up to above the worktable 4. The first sprockets 13 on both sides are connected by a shaft 16 that penetrates through the base 2 and are formed so as to rotate integrally, so that the elevation angle of the arm 11 is kept the same.

The fork 20 is rotatable about a shaft 21 at the tip of the arm.
The rotation angle of the sprocket 22 is a rotation sprocket 22 that rotates integrally with the shaft 21, a fixed sprocket 23 provided coaxially with the rotation center of the arm 11, and both sprockets 22 and 2.
It is regulated by a roller chain 24 spanned between the three.

The fixed sprocket 23 includes a fork 2
The fixed sprocket 23 has the same diameter as the rotating sprocket 22 on the 0 side fixed to the side surface of the case 10.
And the roller chain 24 and the rotating sprocket 22
Acts like a parallel link, and moves the fork 20 up and down with respect to the rotation of the arm 11 while keeping its attitude angle constant.

The roller chain 24, which is stretched between the sprockets 22 and 23, has a longer length than the normal length and is provided with slack between the sprockets.
And a tension roller 31 as an adjusting means provided on the loose side 24b so that the tension of the roller chain 24 can be adjusted and the attitude angle of the fork 20 can be changed. doing.

The aerial work vehicle 1 shown in this embodiment is
A long object lifting device 6 that can lift the long object lifted above the work table 4 by the long object lift mechanism 5 and install the long object at a construction position is provided.

The lifting and lowering device 6 includes a pair of guide columns 50 vertically erected on the floor of the work table 4 with a hydraulic cylinder 54 interposed therebetween , and a guide member 51 provided on the upper portion of the guide columns 50. A pair of slide members 52 that are guided up and down and slide up and down, a long object holder 53 supported by the slide members 52, and a hydraulic cylinder for raising and lowering the long object holder 53 54, and the long object holding table 53 reliably holds the long object,
A mechanism (holding adjustment mechanism) for adjusting the position of the held long object is provided.

The holding / adjusting mechanism for the long object comprises a pair of guide rails 55 provided at the upper end of the slide member 52 in a horizontal direction orthogonal to the axis of the long object, and a guide on the guide rail 55. A slide table 56 slidably provided along a rail 55, a rotation beam 57 fitted to a shaft erected at the center of the slide table 56 so as to be horizontally rotatable, and both ends of the rotation beam 57 A pair of roller units 58 provided on the section and supporting the lower side of a long object with two inclined rollers arranged in a V-shape, and a long section provided undulatingly at the center of a rotating beam 57. A holding unit 59 for holding the upper side of the object is provided.

A guide column 50 and a slide member 52 for vertically guiding the lifting and lowering device 6 are framed so as to surround the hydraulic cylinder 54 for raising and lowering. The guide member 51 having a concave shape is provided, and a rail member 52a having a V-shaped convex surface is provided on the outer surface of the slide member 52 over substantially the entire length thereof.

One of the guide members 51 is one
Is provided on the guide column 50 so as to be movable in the horizontal direction.
Guide member 51 is fixed to the other guide column 50.
You. That is, on the back surface of one guide member 51, one
An adjustment bolt 60 screwed to the guide post 50 is provided. By loosening the guide member fixing bolt 61 and operating the adjustment bolt 60, the distance and the parallelism between the two guide members can be adjusted. Is formed. to this
Therefore, the pair of guide columns 50 and the pair of slide members 52
Can be corrected. A low friction slide block 62 is attached to the inner surface of the guide member 51 in a V-shape and with a predetermined interval L vertically.

When a long object, for example, an air-conditioning duct P is constructed using the aerial work vehicle 1 constructed as described above, first,
The arm 11 is rotated to the lowermost position to position the fork 20 near the floor surface.
Put. Next, the tip of the fork 20 is raised by operating the hydraulic cylinder 33 of the chain pushing means to prevent the air conditioning duct P from rolling down. Then, the rod 12a of the hydraulic cylinder 12 is extended, and the first sprocket 13,
The arm 11 is rotated upward through the roller chain 15 and the second sprocket 14, and the fork 20 is
Lift up.

Next, the raised air-conditioning duct P
Is placed on the roller unit 58 and then fixed by the pressing unit 59, and the position of each part is adjusted to set it in a predetermined position and direction.

Next, the work table 4 is raised to the work position by operating the scissors link mechanism 3, and the hydraulic cylinder 54 of the lifting and lowering assisting device 6 is operated to raise the long object holding table 53, and the air conditioning duct is operated. P is raised to the construction height.

Then, if necessary, the slide table 5
Slide 6 to adjust the horizontal position of the air conditioning duct P,
By rotating the pivoting beam 57, the horizontal angle of the air conditioning duct P is moved in the axial direction, and the air conditioning duct P on the roller unit 58 is moved in the axial direction, so that the longitudinal position of the air conditioning duct P is adjusted in the vertical position of the roller unit 58. After adjusting the vertical angle of the air-conditioning duct P by adjusting the angle, the necessary work such as connection of the hanging fittings, bolting, and connection with the front and rear air-conditioning ducts may be performed. At this time, if necessary, it can be performed using another aerial work vehicle.

When the position of the air-conditioning duct P is adjusted by raising the long object holder 53 in this manner, even if a lateral load or a load in the cylinder radial direction is applied to the long object holder 53 part. As described above, the long object holding table 53 is supported by the slide member 52 guided by the guide member 51 of the guide column 50, and is regulated in any of the front-back, left-right, and rotation directions. The duct P can be securely held, and work can be performed in a safe state. Further, since no excessive force is applied to the cylinder 54, damage to the cylinder 54 can be prevented.

In the aerial work vehicle of the present invention, the above-mentioned long object lifting and holding device is not essential, and the length and the fulcrum of the arm of the long object lifting mechanism or the shape and structure of the fork are appropriately set. By doing so, it is possible to raise a long object to a sufficient height only with the long object lift mechanism.

Although the aerial work vehicle shown in this embodiment is mainly intended for construction of a long object such as the air-conditioning duct, an appropriate attachment is attached to the fork, or the fork itself is mounted. By exchanging, for example, it is possible to apply to installation and exchange of ceiling panels and lighting fixtures, and it is also possible to use them for transportation. Furthermore, the configuration and shape of each part can be appropriately set according to the purpose of use and size of the aerial work vehicle, and a link mechanism can be combined.

The relationship between the guide post and the slide member is as follows.
Not limited to the structure shown in the above embodiment, the sliding contact portion between them may be circular in cross section, or may be supported at three or more places. Further, a roller or the like may be interposed.

[0029]

[Effects of the Invention] As described above, the aerial work vehicle of the present invention is provided with an auxiliary
A pair of guides sandwiching a hydraulic cylinder that raises and lowers the lifting device
The pillars are erected vertically, and both
A pair of slides guided vertically by guide columns
Since the members are suspended, it is resistant to uneven loads,
Various materials are placed or held on the auxiliary lifting device
Position can be safely and securely raised to
Can be improved. And one of the guide pillars,
Move the guide member on which one slide member slides horizontally.
To the other guide column and the other slide
Since the guide member that the slide member slides is fixed,
The assembling accuracy of the sliding pillar and the slide member can be corrected.

[Brief description of the drawings]

FIG. 1 is a perspective view of an aerial work vehicle showing one embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is a cross-sectional view of a main part.

FIG. 5 is a front view of a main part when the lifting and lowering device is raised.

[Explanation of symbols]

1 ... aerial work vehicle, 2 ... base, 3 ... scissor link mechanism,
4 work table, 5 long object lift mechanism, 6 elevating / lowering holding device, 50 guide rod, 51 guide member, 52 slide member, 54 hydraulic cylinder, 53 long object holder

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akira Miyama 4-6-15 Sendagaya, Shibuya-ku, Tokyo Fujita Co., Ltd.

Claims (1)

(57) [Scope of request for utility model registration] 1. An auxiliary lifting device which is lifted and lowered by a hydraulic cylinder is provided on a worktable which can be raised and lowered on an upper portion of a base.
In an aerial work vehicle, the hydraulic cylinder
With erected a pair of guide posts in the vertical direction across the da, the auxiliary lifting device, and vertically a pair of slide members guided in the vertical direction by two guide posts, one Guy
Guide member on which one of the slide members slides
Is provided so as to be movable in the horizontal direction, and the other
And a guide member on which the slide member slides .