JPH05116897A - High lift work device - Google Patents

Abstract

PURPOSE:To easily conduct installation on uneven surfaces such as steps, and provide space reduction at an installation site and labor saving largely at the time of installation movement. CONSTITUTION:There are provided two traveling carriages 1a, 1b provided with four crawlers 2 which can rotate independently in a vertical direction at the front, rear, right, and left respectively, a lifting device 7 installed on a guide rail 6 which is in a roughly arc shape and installed at the upper part of the respective traveling carriages so as to travel, a working floor 9 which is installed at the upper end of the lifting device 7 through an elastic supporting device 8, and a footing plate 25 which is stored in the working floor 9 so as to be drawn freely and formed so that the top ends may be connected with each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aerial work apparatus for working on a ceiling or a wall surface of an aerial building.

[0002]

2. Description of the Related Art Conventionally, this kind of work in high places has been carried out by assembling a frame scaffold or using a rolling tower.

[0003]

However, when the frame scaffolding or rolling tower is installed at the planned place, if the floor surface has irregularities, it is necessary to prepare the floor surface in order to make it level. In addition, the frame scaffold takes up a large space on the floor, which is an obstacle to the transportation of goods and the movement of people. Furthermore, there is also a problem that it takes much time and effort to assemble, disassemble, and move the frame scaffold.

Therefore, the present invention can be easily installed even in a place having unevenness such as steps or stairs, does not occupy a large space at the installation place, and can greatly save labor in terms of installation and movement. An object is to provide a working device.

[0005]

In order to achieve the above-mentioned object, the present invention is designed so as to be independently rotatable in the vertical direction.
A plurality of traveling vehicles equipped with two crawlers in the front, rear, left and right, an elevating device movably attached to a substantially arc-shaped guide rail provided on the upper part of each traveling vehicle, and an elastic supporting device at the upper end of the elevating device. And a scaffolding plate that is housed in the work floor so that it can be pulled out and that its tip portions can be connected to each other.

[0006]

After moving each traveling vehicle to a predetermined position, the lifting device is moved along the guide rails to level the work floor. After further adjusting the height, direction, and inclination of the work floor, pull out each scaffolding plate to connect the tips of the scaffolds to form a connected work floor, and then use the lifting device to bring the connected work floor to the specified height. Raise it to work.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings by taking a device using two traveling vehicles as an example. Traveling vehicles 1a, 1b
Is a four-crawler type traveling vehicle having four crawlers 2 on the front, rear, left and right sides, and each crawler 2 is configured to be independently rotatable about a mounting shaft 4 to the main body 3 in the vertical direction. Therefore, for example, as shown in FIG.
Even in such a case, it is possible to travel without trouble by rotating each crawler 2.

A guide rail 6 having a substantially arc shape is provided on the upper ends of both sides of the main body 3, and an elevating / lowering device 7 is slidably attached to the guide rail 6. Further, a work floor 9 is attached to the upper end of the lifting device 7 via an elastic supporting device 8. When the vehicle body leans like the traveling vehicle 1b on the right side of FIG. 1, the angle is detected by the lean angle sensor, and the elevating device 7 is appropriately moved along the guide rails 6 to level the work floor 9 horizontally. It is possible to maintain the stability of the vehicle body by moving the center of gravity and prevent the vehicle from falling over.

The elastic support device 8 is for correcting and finely adjusting the direction and inclination of the work floor 9. As shown in FIGS. 3 and 4, the upper plate 10 and the lower plate 11 are made of elastic material such as rubber. They are connected by 12 and a spherical bearing 13 is interposed. This elastic body 1
In addition, 2 may be a spring, a pneumatic cylinder, a rubber ball, or the like, and the installation location may be one location or a plurality of locations. Reference numeral 14 is a connecting rod having a threaded portion 20, one end of which is connected to the upper plate 10 via a bracket 15 and the other end of which is provided with a handle 16 for left / right adjustment. Reference numeral 17 is a tilting plate which is tiltably attached to a support plate 18, and a bracket 19 which is screwed with the screw portion 20 is erected on the upper surface thereof. Therefore, when the handle 16 is turned, the connecting rod 14 moves forward and backward through the screw portion 20, so that one end of the work floor 9 can be moved laterally through the bracket 15 and the upper plate 10. Thus, the left and right directions of the work floor 9 can be adjusted.

The tilt sensor 2 is mounted on the tilt plate 17.
A motor 22 connected to the motor 3 is provided.
2, the screw 24 for tilt correction is rotated. The lower end of the screw 24 is screwed into the tilting plate 17. When the motor 22 is actuated by the detection of the tilt sensor 23, the screw 24 rotates and tilts the tilting plate 17, whereby the tilt of the work floor 9 is automatically corrected and the work floor 9 is leveled.

The work floor 9 has a hollow structure made of metal, and the scaffolding plate 25 is housed therein so that it can be pulled out. As shown in FIGS. 5 and 6, two connecting portions 26 and 27 are provided at the tip of the scaffolding plate 25 so as to project therefrom.
A convex portion 28 and a concave portion 29 are formed on one side surface of each. In addition, the tip of the scaffolding plate 25 housed in the work floor 9 of the other traveling vehicle is formed in a symmetrical structure to that described above (not shown). Therefore, when each scaffolding plate 25 is pulled out and connected, The convex portion 28 and the concave portion 29 are fitted to each other. Telescopic poles 30 for tensioning the safety rope are stored in the four corners of the work floor 9.

FIG. 7 shows a collimation device 31 for setting the directions of the work floors 9, 9 when the work floors 9, 9 are connected to each other. It is composed of a light source 32 such as a laser light source and a light receiving plate 33 provided at the opposite side end.

Therefore, for example, a procedure for performing work at a high place above the stairs as shown in FIG. 1 will be described. First, one traveling vehicle 1a is stopped at the landing, and the other traveling vehicle 1b is stopped at a predetermined position in the middle of the stairs. The position is fixed by the stopper 34. In addition, each traveling vehicle 1
In a and 1b, the lifting device 7 is moved along the guide rail 6 to level the work floor 9. And each lifting device 7
After raising each work floor 9 to a predetermined substantially same height by, the fine adjustment is performed by the collimation device 31. That is, the light source 3
The vertical displacement of the beam on the light-receiving plate 33 due to the light emission from 2 is corrected by operating the elevating device 7, and the horizontal displacement is adjusted by rotating the handle 16. The inclination of the work floor 9 is detected by the inclination sensor 23 so that the screw 2
4 rotates and is automatically corrected. Next, each scaffolding plate 25 is pulled out and the tips are connected to form a connection work floor 35.
After that, the pole 30 is pulled out and the safety rope 36 is stretched to perform work at a high place.

In some cases, first, the connecting work floor 3
After forming 5, the respective elevating devices 7 may be simultaneously operated to raise the connecting work floor 35 to a predetermined height while keeping the horizontal level. According to this method, the connecting work floor 3
It is possible to put a worker or material on the unit 5 and move it up and down.

The following method is suitable for this synchronous lifting. That is, a master unit and a slave unit are designated for each traveling vehicle 1a, 1b, and an inclination sensor is attached to the work floor 9 of the slave unit. Then, the working floor 9 of the master unit is independently moved up and down, and the tilt angle of the working floor 9 of the slave unit associated therewith is detected by the tilt sensor, and the working floor 9 of the slave unit is made to follow the master unit based on the detection. And raise and lower it.

[0016]

Since the device of the present invention uses the four-crawler type traveling vehicle, it can be easily traveled and installed even in a place having unevenness such as steps or stairs, and it does not take up a large space at the place of installation. In addition, since it does not hinder the transportation of goods and the movement of people, and the installation and assembly and the movement are easy, a great labor saving can be achieved.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a simplified perspective view of a traveling vehicle.

FIG. 3 is a front view of the elastic support device.

FIG. 4 is a side view of the same.

FIG. 5 is a plan view of a work floor.

6 is a cross-sectional view taken along the line AA of FIG.

FIG. 7 is a plan view of the collimation device.

[Explanation of symbols]

 1a, 1b traveling vehicle 2 crawler 6 guide rail 7 lifting device 8 elastic support device 9 work floor 25 scaffolding plate

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Reference number within the agency FI Technical display location B66F 9/06 M 8611-3F (72) Inventor Noriyuki Ikuta 1-18-22 Nishiki, Naka-ku, Nagoya-shi No. Takenaka Corporation Nagoya Branch (72) Inventor Ken Ken Aichi, Nishikasugai-gun, Nishibiwajima-cho, 3-chome, Yoshino-cho, Takadake Mfg. Co., Ltd. (72) Inventor Minoru Aoki Nishi-Kasugai, Aichi 3-1-1, Yoshino-cho, Nishibiwajima-cho Takadake Manufacturing Co., Ltd. Technology Development Center

Claims (1)

[Claims] 1. A plurality of traveling vehicles equipped with four crawlers, which are independently rotatable in the vertical direction, in the front, rear, left, and right, and movably mounted on a substantially arc-shaped guide rail provided on the upper portion of each traveling vehicle. Lift device, a working floor attached to the upper end of the lifting device via an elastic support device, and a scaffolding plate that is housed in the working floor so that it can be pulled out and the tips are connectable to each other. And an aerial work device.