JP2003073082A - Working device and working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a working device and a working vehicle capable of suitably performing spraying work such as thermal spraying, coating or another work for an elevated structure and a large-scale structure without using a scaffold. SOLUTION: This working device is provided with, at least, a boom 2 capable of turning and vertically moving and a working mount moving device 4 disposed in the tip of the boom 2. The working mount moving device 4 is provided with a working mount 3, a raising/lowering mechanism 12 vertically raising/ lowering the working mount 3, a swinging mechanism 13 swinging the raising/ lowering mechanism 12 in the front/rear direction about a horizontal swinging shaft a2, a horizontal movement mechanism 14 moving the working mount 3 in the left/right direction, and a horizontal rotation mechanism 15 rotating the horizontal movement mechanism 14 about a vertical rotary shaft a3. This working vehicle is formed by installing the working device 1 on a mobile car body 37.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work device and a work vehicle used for performing a predetermined work while operating a work table within a certain range, and particularly to a high-rise structure or a large structure having a wide wall surface. The present invention relates to a work device and a work vehicle that can be suitably used when performing spraying work such as thermal spraying and painting on objects and the like.

[0002]

2. Description of the Related Art When spraying work such as spraying or painting on high-altitude structures such as bridges, steel towers, construction structures, large tanks or large structures having wide wall surfaces, In general, a temporary scaffold is provided along the periphery of an object, and an operator generally performs a spraying work on the scaffold. Also, when performing maintenance or inspection of these structures, similarly, temporary scaffolding should be provided in the necessary parts.
It was common for workers to work on this scaffold.

[0003]

However, such a conventional work method requires a considerable amount of time, labor and cost for the work to install the scaffold. In particular, when the target object is located at a high place or is large, the work of installing the scaffolding is correspondingly large-scaled, and more time, labor and cost are required.

Further, since the worker stands on the scaffold to perform the work, the work space is limited and the work cannot be performed in a wide range at a time, and it is difficult to perform the work continuously for a long time. Therefore, there is a problem that work efficiency is poor. In addition, since the work is performed on the temporary scaffold, there is a problem in safety of the work, such as a risk of the worker falling.

The present invention has been made in view of the above problems, and is capable of performing spraying work such as spraying and painting and other works on high-altitude structures and large structures without using scaffolds. By providing a work device and a work vehicle that can be suitably performed, the time required to install the scaffold,
It is a technical subject to reduce labor and cost and improve work efficiency and work safety.

[0006]

The concrete means for solving the above technical problems are as follows. That is, the working apparatus according to claim 1 has at least a boom capable of turning and moving up and down, and a workbench operating device arranged at the tip of the boom.
It is characterized by having a workbench, a lifting mechanism for vertically moving the workbench, and a horizontal movement mechanism for horizontally moving the workbench in the left-right direction.

The working device according to claim 2 is the work device according to claim 1.
In the configuration described in (1), the lifting mechanism has a swing mechanism that swings in the front-rear direction on a constant vertical plane about a horizontal swing axis.

A working apparatus according to a third aspect is the work apparatus according to the first aspect.
Alternatively, in the configuration described in 2, the horizontal movement mechanism is
The present invention is characterized by having a horizontal rotation mechanism that rotates on a horizontal plane about a vertical rotation axis.

A working apparatus according to a fourth aspect is the work apparatus according to the first aspect.
In the configuration described in any one of 1 to 3, a spraying device for a liquid, a powdery material, or a granular material is arranged on the workbench, and the operation unit of the spraying device is a boom and workbench operation device. It is characterized in that it is arranged in the vicinity of the operation unit of.

A working vehicle according to a fifth aspect is characterized in that the working device according to any one of the first to fourth aspects is installed on a vehicle body capable of self-propelling.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION A working apparatus 1 and a working vehicle according to an embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a side view showing a working apparatus 1 according to an embodiment of the present invention, and FIG. 2 is a working apparatus 1 according to an embodiment of the present invention.
FIG. As shown in these drawings, a working apparatus 1 according to an embodiment of the present invention is provided with a boom 2 that can be at least swung and moved up and down, and a work table 3 that is disposed at the tip of the boom 2 and that has a work table 3 such as up, down, left and right. And a workbench operation device 4 that is operated in the direction. The details will be described below.

The boom 2 is capable of at least turning and vertical movement, and a workbench operating device 4 arranged at the tip thereof.
Is for moving to and supporting an arbitrary position.
Here, it has a structure similar to that of a boom used in a general crane vehicle, and has a structure capable of turning, undulating for vertical movement, and extension / contraction. Specifically, a swivel base 5 capable of swiveling around a vertical swivel axis a1,
The boom body 8 is arranged on the swivel base 5 and has a boom body 8 capable of performing an up-and-down motion for vertically moving the tip end portion 7 around the connecting portion 6 and a telescopic motion for extending and contracting in the length direction. There is. Thereby, the boom 2 can move and support the workbench operating device 4 three-dimensionally to an arbitrary position.

A connecting portion 6 between the boom body 8 and the swivel base 5 is also provided.
A winch 9 is provided on the winch 9, and a wire 10 extending toward the tip portion 7 side of the boom main body 8 is wound around the winch 9 in order to move the workbench operating device 4 up and down. Further, on the swivel base 5, there is provided an operation cabin 11 for an operator to enter and operate the boom 2 and the workbench operation device 4. In the operation cabin 11, the boom 2 and the operation unit of the workbench operation device 4 are provided.

The workbench operation device 4 is a device for moving the workbench 3 in each direction such as up, down, left and right.
And an elevating mechanism 12 for elevating the work table 3 in the vertical direction.
A swing mechanism 13 for swinging the lifting mechanism 12 in the front-back direction on a certain vertical plane about a horizontal swing axis a2, and a horizontal moving mechanism 14 for horizontally moving the workbench 3 in the left-right direction.
And a horizontal rotation mechanism 15 for rotating the horizontal movement mechanism 14 on a horizontal plane about the vertical rotation axis a3.

The elevating mechanism 12 is a mechanism for vertically elevating the workbench 3, and includes a tip portion 7 of the boom body 8.
Columnar body 16 attached to the column, and an operation table 1 slidably provided along the columnar body 16 in the vertical direction.
And 7 are included. Tip 7 of boom body 8
The body portion 19 of the columnar body 16 except for the upper portion 18 connected to
Four rails 20 are provided on the outer peripheral surface of the front, rear, left and right along the generatrix direction. Then, as shown in FIG. 3, which is an enlarged view taken along the line XX of FIG.
Three pulleys 21 that are respectively fitted to the rails 20 of the book are rotatably arranged. By rolling the pulleys 21 while fitting the rails 20 of the columnar body 16, the operating table 17 is formed into a columnar body. It is configured to move up and down along the line 16. Further, as shown in FIG. 1, the tip of the wire 10 is coupled to the upper portion of the operating table 17. The wire 10 is wound from a winch 9 into a plurality of pulleys and is arranged so as to hang downward from a pulley arranged at the upper end of the columnar body 16. The wire 10 is wound by the winch 9 to operate. Raise platform 17 and wire 1
The operation table 17 can be lowered by sending 0 from the winch 9.

The swinging mechanism 13 is a mechanism for swinging the columnar body 16 and the operating table 17 constituting the lifting mechanism 12 in the front-rear direction on a certain vertical plane about the horizontal swing axis a2. A horizontal swing shaft a2 for swingably supporting the columnar body 16 with respect to the tip end portion 7 of the boom body 8, and the horizontal swing shaft a
2 and a swing actuator 22 for swinging the columnar body 16 in the front-back direction.
Here, as shown in FIG. 4 which is an enlarged view of the A portion of FIG. 1 and FIG. 5 which is an enlarged view of the B portion of FIG. 2, the horizontal swing axis a2 includes the upper portion 18 of the columnar body 16 and the tip of the boom body 8. It is arranged horizontally in the left-right direction at the connecting portion with the portion 7. Also,
A hydraulic cylinder is used as the swing actuator 22, and the columnar body 1 is provided above the horizontal swing axis a2.
The columnar body 16 is arranged in such a manner that the upper portion 18 of 6 and the tip portion 7 of the boom main body 8 are connected to each other and is driven to expand and contract, thereby causing the columnar body 16 to move in the front-back direction on a certain vertical plane about the horizontal swing axis a2. It is configured to swing. As a result, by operating the swinging mechanism 13, the columnar body 1
6 can be tilted at any angle. Therefore, the operation table 17 can be operated along the slanted columnar body 16, and the working device 1 can be made suitable even when working on a wall surface or the like having a slanted vertical section.

The horizontal movement mechanism 14 is a mechanism for horizontally moving the workbench 3 in the left-right direction, and a support surface portion 23 that projects forward of the operation table 17 to form a horizontal surface, and a work on the support surface portion 23. It has a moving actuator 24 for moving the table 3 in the left-right direction, and a transmission mechanism 25 for transmitting the power of the moving actuator 24 to the work table 3. Here, as shown in FIG. 3, FIG. 6 which is an enlarged view of the portion C of FIG. 1, and FIG. 7 which is a front view of the operation table 17, the movement actuator 24 is attached to one side portion of the support surface portion 23. , Protective cover 2
It is arranged so as to be covered by 6. As such a moving actuator 24, an actuator such as a servo motor capable of controlling the rotation angle is used so that the workbench 3 can be moved and stopped at an arbitrary position. Further, the transmission mechanism 25 arranges the drive gear 28 coupled to the drive shaft 27 of the moving actuator 24 on one side of the support surface portion 23 and arranges the driven gear 29 on the other side of the support surface portion 23. A chain 30 is wound around the driving gear 28 and the driven gear 29. By fixing the workbench 3 to the chain 30, the rotation of the moving actuator 24 is converted into an operation of moving the workbench 3 in the left-right direction and transmitted. Here, four rollers 31 are rotatably provided on the lower surface of the workbench 3, and these rollers 31 are fitted to two parallel rails 32 arranged in the left-right direction on the upper surface of the support surface portion 23. The work table 3 is configured to move in the left-right direction along the rail 32 by rotating while being combined. Therefore, by controlling the rotation angle of the drive shaft 27 of the moving actuator 24, the position of the workbench 3 in the left-right direction can be controlled. Since the movable distance of the workbench 3 in the left-right direction is restricted by the length of the support surface portion 23 in the left-right direction, the support surface portion 23 is long in the left-right direction in order to secure the movable distance of the workbench 3. It is formed in a rectangular shape.

The horizontal rotation mechanism 15 is a mechanism for rotating the support surface portion 23, the movement actuator 24, and the transmission mechanism 25 of the operation table 17 constituting the horizontal movement mechanism 14 on a horizontal plane about the vertical rotation axis a3. Yes, columnar 1
The bearing unit 33 rotatably supports the main body 19 of the No. 6 and the rotary actuator 34 that rotationally drives the main body 19 of the columnar body 16. Here, as shown in FIG. 1 and FIG. 4 which is an enlarged view of part A of FIG.
Is arranged at the lower end of the upper portion 18 of the columnar body 16, and
The upper end of 9 is rotatably connected to and supported by its upper portion 18. As a structure of such a bearing portion 33, a known bearing structure such as a rolling bearing can be used, but since the vertical rotation axis a3 may be tilted at various angles due to the swinging mechanism 13, the vertical rotation axis a3 may be vertical. It is necessary to have a structure capable of supporting not only the load in the direction of the rotation axis a3 but also the load in the direction orthogonal thereto. Further, the rotary actuator 34 is arranged inside the upper portion 18 of the columnar body 16, and its drive shaft 35 is coupled to the main body portion 19 to rotationally drive the main body portion 19. As such a rotary actuator 34, an actuator capable of controlling a rotation angle such as a servo motor is used so that the horizontal movement mechanism 14 can be rotated and stopped in an arbitrary direction. Accordingly, by controlling the rotation angle of the rotary actuator 34, the direction of the horizontal movement mechanism 14, that is, the direction of the workbench 3 on the horizontal plane can be adjusted. Therefore, the working apparatus 1 can be suitably used even when working on a wall surface or the like having an inclined horizontal section.

The work table 3 is a table on which a device for performing spraying work such as thermal spraying or painting or other work is installed, or on which a worker is placed to perform work. In the present embodiment, a case will be described in which the working device 1 is used as a device for spraying a liquid, powdery material, or granular material onto a wall surface such as a thermal spraying work or a painting work. In this case, a spraying device 36 for spraying liquid, powder, or granules such as a spraying device for spraying or a spraying device for paint for coating is installed on the work table 3. . As such a spraying device 36, a device that can be remotely controlled from a distant position is used, and its operation unit is
The boom 2 and the workbench operation device 4 are arranged in the vicinity of the operation section, that is, in the operation cabin 11. As a result, the operator can operate the boom 2, the workbench operating device 4, and the spraying device 3
All 6 can be operated in the operating cabin 11. Note that the configuration on the workbench 3 is not limited to the one in which such a spraying device 36 is installed, and a device for performing other work may be installed. In addition, by installing a fence or the like around the work table 3 so that the worker can rest on the work table 3,
The worker can also perform various work at high places such as welding work, wall repair work, and tile adhering work on the work table 3.

Further, the working apparatus 1 described above can be made into a movable working vehicle by installing it on the vehicle body 37 which can run by itself, as shown by the broken line in FIG.
As such a self-propellable vehicle body 37, a vehicle body having the same configuration as a vehicle body used in a general mobile crane can be used. That is, it is assumed that the vehicle body 37 has a structure capable of traveling with the working device 1 placed thereon, and that the vehicle body 37 can be reliably fixed to the ground using a jack or the like when the working device 1 is used. Thereby, the working apparatus 1 can be easily moved to the site of each work and used.

Next, a method of using the work apparatus 1 and the work vehicle according to this embodiment will be described. As shown in FIG.
When performing spraying work such as spraying or painting on the vertically flat wall 38, the operator in the operation cabin 11 first
The boom 2 is operated to move the workbench operating device 4 to a work position where a spraying operation is performed on the wall 38. At this time, the distance d between the spraying device 36 and the wall 38 as the work target is adjusted to be an optimum distance according to the performance of the spraying device 36. Next, the boom 2 is fixed in that position, and the lifting mechanism 12
And the horizontal movement mechanism 14 are used to move the workbench 3 in the vertical direction and the horizontal direction at a constant speed, and the spraying device 36
Is operated to perform spraying work such as thermal spraying and painting within the operating range of the elevating mechanism 12 and the horizontal moving mechanism 14. Then, when the area of the wall 38 to be worked is larger than the operating range, the boom 2 is further operated to move the workbench operating device 4, and then the spraying work is similarly performed. By doing this, the wall 38 at a high place can be installed without installing a scaffold.
The spraying work can be performed easily.

Further, as shown in FIG. 9, when spraying work such as spraying or painting on an inclined curved wall 39 of a gas tank or the like, the swinging mechanism 13 is used to operate the wall 39 to be worked.
By inclining the columnar body 16 in accordance with the inclination of the vertical cross section of the above, and inclining the operation table 17 in accordance with the inclination of the horizontal cross section of the wall 39 to be worked by using the horizontal rotation mechanism 15, the spraying device 36 is provided. The orientation of the workbench 3 is adjusted so that it faces the front with respect to the wall 39 to be worked. Then, in that state, as described above, the spraying device 36 is operated while moving the workbench 3 in the up-down direction and the left-right direction at a constant speed using the elevating mechanism 12 and the horizontal moving mechanism 14. The spraying work can be suitably performed on the curved wall 39.

Further, as shown in FIG. 10, spraying work such as thermal spraying or painting is performed on a wall 40 below the boom 2 such as a quay and on the boom 2 side of the workbench operation device 4. In this case, by rotating the main body portion 19 of the columnar body 16 by 180 degrees using the horizontal rotation mechanism 15, the workbench 3
The spraying operation can be performed with the spraying device 36 arranged above facing the boom 2.

Even when an operator mounts on the workbench 3 to perform the work, the boom 2 and the workbench operating device 4 are used as in the case of performing the spraying work using the spraying device 36 described above. By operating, the work table 3 can be moved to a predetermined work position and work can be performed.

[0025]

As described above, according to the first aspect of the present invention.
According to the working device of the above, the boom is operated to support the workbench operating device at an arbitrary position according to the work target, and the workbench operating device lifts and horizontally moves the workbench vertically and horizontally. Since it is possible to perform work while moving in any direction, it is possible to easily perform spraying work such as spraying and painting on other high-altitude structures and large structures, and other work without using scaffolding. it can. Therefore, it is possible to reduce the time, labor, and cost required to install the scaffold, and improve work efficiency and work safety.

According to the working apparatus of the second aspect of the present invention, in addition to the above effects, the swing mechanism for swinging the elevating mechanism in the front-rear direction on a certain vertical plane about the horizontal swing axis. With this, it is possible to incline the elevating mechanism at an arbitrary angle, and the workbench can be moved up and down along the inclined elevating mechanism. Therefore, the working device can be suitable even when working on a wall surface or the like whose vertical cross section is inclined.

According to the working apparatus of the third aspect of the present invention, in addition to the above-mentioned effects, the horizontal movement mechanism has a horizontal rotation mechanism for rotating the horizontal movement mechanism on the horizontal plane about the vertical rotation axis, and thus the horizontal movement mechanism is provided. It is possible to adjust the direction of the moving mechanism, that is, the direction in which the work table operates on a horizontal plane, and when performing work on a wall surface with an inclined horizontal section, or because the space for arranging the boom is insufficient. It is possible to provide a suitable working device even when it cannot be arranged at a right angle to the wall surface or the like of the work target. Further, by rotating the horizontal movement mechanism by 180 degrees, it is possible to perform work on the wall surface below the boom such as the quay and on the boom side of the work table operating device.

According to the working apparatus of the fourth aspect of the present invention, in addition to the above-mentioned effect, the scaffolding is installed by disposing the spraying apparatus for the liquid, powdery material or granular material on the workbench. Without doing so, it is possible to easily perform spraying work such as spraying or painting on a wall at a high place. Further, by disposing the operating portion of the spraying device in the vicinity of the operating portion of the boom and the workbench operation device, one operator can operate the device related to the spraying work at one place.

According to the work vehicle of claim 5 of the present invention,
In addition to the above-mentioned effects, by installing the working device on the vehicle body which can be self-propelled, the working device can be easily moved to the site of each work and used.

[Brief description of drawings]

FIG. 1 is a side view showing a working device according to an embodiment of the present invention.

FIG. 2 is a plan view showing a work device according to an embodiment of the present invention.

FIG. 3 is an enlarged view taken along line XX of FIG.

FIG. 4 is an enlarged view of part A in FIG.

5 is an enlarged view of part B in FIG.

FIG. 6 is an enlarged view of a C portion of FIG.

FIG. 7 is a front view of the operation table of the work apparatus according to the embodiment of the present invention.

FIG. 8 is a diagram showing a state in which the work device and the work vehicle according to the present embodiment are used to perform a spraying work on a vertical flat wall.

FIG. 9 is a diagram showing a state in which the work device and the work vehicle according to the present embodiment are used to perform a spraying work on an inclined curved wall.

FIG. 10 is a diagram showing a state in which the work device and the work vehicle according to the present embodiment are used to perform a spraying operation on a wall on the boom side below the boom.

[Explanation of symbols]

1 Working device 2 boom 3 workbench 4 Workbench operating device 8 boom body 11 Operation cabin 12 Lifting mechanism 13 Swing mechanism 14 Horizontal movement mechanism 15 Horizontal rotation mechanism 16 columns 17 Action table 36 Spraying device 37 body

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Toshiaki Saeki             1-8-17 Yaesu, Chuo-ku, Tokyo Shinmaki Town Bi             Le 5th floor, Geo Research Institute, Inc. F-term (reference) 3F333 AA08 AB04 BA01 BA26 CA30                       DA04 DB10

Claims (5)

[Claims] 1. A boom which is capable of at least pivoting and vertical movement, and a workbench operating device arranged at the tip of the boom. The workbench operating device includes a workbench and the workbench in a vertical direction. A working device comprising: a lifting mechanism for vertically moving the work table and a horizontal movement mechanism for horizontally moving the work table in the left-right direction. 2. The working apparatus according to claim 1, further comprising a swing mechanism that swings the elevating mechanism in a front-rear direction on a constant vertical plane about a horizontal swing shaft. 3. The working apparatus according to claim 1, further comprising a horizontal rotation mechanism that rotates the horizontal movement mechanism on a horizontal plane about a vertical rotation axis. 4. A spraying device for liquid, powder or granular material is arranged on the workbench, and an operating portion of this spraying device is arranged in the vicinity of the boom and the operating portion of the workbench operating device. The working apparatus according to any one of claims 1 to 3, characterized in that 5. A work vehicle in which the work device according to any one of claims 1 to 4 is installed on a vehicle body capable of self-propelling.