JP2002138659A - Simple knockdown gondola suspension type work apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable execution of a simple and safe exterior work of a building at a low cost without installing scaffolding, in a simple knockdown gondola suspension type work apparatus. SOLUTION: An arm 18 is supported by a support frame 22 at an intermediate section. The support frame 22 can be moved along a coping 28 of a concrete building by a roller 26. A gondola 14 is suspended from one end of the arm 18 with a suspension cable 16. A horizontal movement frame 38 is installed at the other end of the arm 18 and is provided with a water tank 36 as a weight. The horizontal movement frame 38, having the water tank 36, is located at a position away from the support frame 22 acting as a fulcrum by a distance y which is larger than distance x to the suspension point of the gondola. The weight of the water tank and the ratio of x/y are set, in such a manner as to make the moment of pushing the weight toward the top face of the building at least 2.5 times larger than the moment in the direction opposite to the former.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple assembling type gondola hanging type working device, which enables simple and safe work such as exterior construction of a building without installing a scaffold. It is.

[0002]

2. Description of the Related Art For work such as repainting of a building's outer wall and changing of caulking, it is necessary to move not only vertically but also laterally along the outer wall. Conventionally, a scaffold is set up around the outer wall of the building. It was usual to work by doing. As a working device without scaffolding, there is also a gondola hanging type used for work such as cleaning windows of high-rise buildings. A normal gondola is provided with a rail-mounted moving device that is permanently installed on the roof according to the design of the building, and is suspended from the moving device during window cleaning work. In addition, as a simpler gondola type, there is a type in which a hanging rope extending from the gondola is fixed to the outer wall of the roof with a vise.

[0003]

Although the scaffold is suitable for safe work, it must be installed so as to go around the entire building, and its installation cost is high. Therefore, there is a problem that the repair cost is increased. In addition, the conventional permanent gondola suspension type is based on the premise that it is installed from the initial design stage of the building, and requires the installation of fixed rails on the roof, and repairs the walls of old buildings. It was not suitable for work, and the cost was naturally high. In addition, a simple gondola suspension system is used, but in this case the total weight of the gondola may exceed 350 kg, and it is necessary to withstand at least 2.5 times the tensile load for safety. However, there are very few places where such a large tensile load can be safely applied, and the use of a simple method of hanging a gondola has not been practically used.

[0004] In view of the problems of the prior art described above, an object of the present invention is to provide a gondola capable of performing low-cost, simple and safe building exterior work without installing a scaffold without installing a scaffold. An object of the present invention is to provide a suspended working device.

[0005]

According to the first aspect of the present invention, there is provided a working device for suspending and using a gondola for working on a wall surface of a building. Arm, which is arranged to apply substantially only a compressive load to the building, wherein the suspension of the gondola is performed at one end of the arm and at a distance greater than the distance from the fulcrum to the suspension point of the gondola. A simple assembling type gondola hanging operation device is provided, wherein a weight is provided on an end side so as to substantially apply only a compressive load to a building.

The function and effect of the invention of claim 1 will be described. The gondola is suspended on one side of the arm with respect to the fulcrum, and a weight is provided on the opposite side of the arm. Since the degree of freedom to freely set the distance from the fulcrum to the weight is greater than the distance, the moment of holding the weight in the building with the appropriate weight of the weight is greater than the moment of dropping the gondola. It can be overwhelmingly large, and the gondola can be maintained in a stable suspended state. Since the load applied to the building from the arm and weight is substantially only in the compression direction, buildings, especially concrete buildings, have sufficient strength against compressive loads even if they are considerably deteriorated. Work with a high degree of safety can be realized. In addition, since the gondola is simply suspended from one end of the arm and the weight is installed at the other end, the structure is simple and the cost can be reduced.

According to the invention described in claim 2, according to claim 1
In the invention described in (1), a simple assembling type gondola suspension type working device is provided, wherein the fulcrum and the weight body can be moved laterally.

The operation and effect of the second aspect of the present invention will be described. Since the fulcrum and the weight are provided so as to be able to move laterally, the gondola can be moved in the lateral direction, and the working part can be changed appropriately. It has the effect of increasing efficiency.

According to the invention described in claim 3, according to claim 1 of the present invention,
In the invention described in (1), there is provided a simple assembling type gondola suspension type working device, comprising a stay cable for restricting movement of the arm to the gondola side.

The operation and effect of the third aspect of the invention will be described. By providing the stay cable in the arm, the stay cable is bound to the rising portion of the outer wall surface on the opposite side of the building, the iron fence and other appropriate parts. It is possible to reliably prevent the fulcrum from moving toward the gondola.

According to the invention described in claim 4, according to claim 1 of the present invention,
3. The simple assembling type gondola suspension according to claim 1, further comprising a guide roller provided near the fulcrum, wherein the guide roller is arranged to engage with a wall surface of the building when the arm is moved to the gondola side. A lower working device is provided.

According to the fourth aspect of the present invention, a guide roller is provided near the fulcrum of the arm, and the guide roller is disposed so as to be deeply engaged with the wall of the building in the direction of the gondola. There is an effect that the movement of the arm in the direction can be restricted.

According to the fifth aspect of the present invention, the first aspect is provided.
In the invention described in (1), the weight body is a water tank, and a simple assembling type gondola suspension type working device is provided.

According to the fifth aspect of the present invention, the weight is constituted by a water tank so that the amount of water is adjusted according to the arm length from the fulcrum to the gondola with respect to the arm length from the fulcrum to the gondola. Thus, a moment difference required for holding the arm can be easily and reliably secured.

According to the invention of claim 6, according to claim 1,
In the invention described in (1), the weight body is a sand tank, and a simple assembling type gondola suspension type working device is provided.

By constituting the weight body with a sand tank, the effect that the moment difference required for holding the arm can be easily and reliably secured is obtained as in the fifth aspect of the present invention.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 10 denotes a concrete building, and 12 denotes a simple assembling type gondola suspension type working apparatus according to an embodiment of the present invention. In the following description, the gondola hanging working device 12 is used for repairing a concrete building wall surface 10A.

The gondola suspension type working device 12 includes a gondola 14 for accommodating an operator therein, and the gondola 14 is suspended by a pair of suspension cables 16 as shown in FIG. The suspension cable 16 is bound to a horizontal arm 18 at a binding portion 20 as shown in FIG. As shown in FIG. 1, the suspension cable 16 is
And changes direction at the tip of the arm 18 so that it is free from the arm 18 and substantially only a vertical load is applied to the arm 18 along the wall 10A of the building 10.

A wheel support frame 22 is fixed so as to be perpendicular to the arm 18, that is, in a vertical direction by a suitable means such as a bolt (not shown). The wheel supporting frame 22 serves as a fulcrum of the arm 18 with respect to the roof surface of the building, and the weight of the gondola 14 on one side (the weight of the gondola itself + the weight of the worker riding the gondola) and the weight made of water, sand, and the like on the other side. By taking the moment on the counterweight side at least 2.5 times or more larger than the moment on the gondola side in balancing with the (counterweight), it functions to ensure that the gondola does not slip down. A support plate 24 is provided at the lower end of the wheel support frame 22.
Is fixed, and a wheel 26 is provided on the lower surface of the support plate 24. The wheel 26 allows the wheel support frame 22 to move laterally (moving in the left-right direction in FIG. 2) by rolling on the horizontal plane of the building. In FIG. 1, the wheel 26 is the rising wall 10 near the fence 27 on the roof of the building.
B is arranged to move laterally along the cap 28 on the upper surface of B.

An appropriate number of guide rollers 30 are provided near the wheel 26. The guide rollers 30 abut against the protruding wall portion 10B of the building from the inner side surface, and move in the direction of the gondola to the protruding wall portion 10B. The direction in which the engagement of the roller 30 is deepened serves to prevent the wheel 26 from separating from the coping 28 during rolling. The guide roller 30 is attached to a guide roller support frame 34 fixed to a crosspiece 32 extending from the wheel support frame 22. The fixing of the guide roller support frame 34 to the crosspiece 32 can be adjusted vertically so that the optimal contact state of the guide roller 30 with the protruding wall portion 10B is obtained.

At the end (distance Y from the fulcrum) of the arm 18 opposing the gondola 14, a water tank 36 as a weight of the present invention is installed. The water tank 36 is mounted on a horizontal moving frame 38, and the water tank 36 stores a predetermined weight of water serving as a counterweight for the gondola 14. The lateral movement frame 38 has a wheel 40 on the lower surface, and the lateral movement (movement in the left-right direction in FIG. 2) of the water tank 36 as a weight (counterweight) is enabled by the wheel 40. The lateral movement frame 38 is fixed to the arm 18 by a suitable means at a mounting portion 38A at the upper end, and the mounting portion 38A has suitable means for adjusting the position of the frame 38 with respect to the wall surface 10B.

In FIGS. 1 and 2, the gondola 14 has a winch 42, and each suspension cable 16 is wound around a winch winding drum 42A on both sides of the gondola 14. That is, the drive switch of the winch 42 is provided in the gondola 14, and the operator in the gondola 14 controls the winding of the winch by appropriately operating this switch, so that the height of the gondola can be controlled without getting off the gondola 14. You can work while changing.

In FIG. 2, the arm 18 and the water tank 36
A stay cable 44 is provided to prevent the frame 38 including the frame 38 from moving toward the gondola 14. The stay cord 44 is connected at one end to a winch 46 on the lateral movement frame 38 (which may be the arm 18), and the other end of the stay cord 44 is provided with a hook 48 for hanging on a suitable locking site. FIG. 3 shows an example of a hooking method of the hook 48. The screw-type clamp 50 has a jaw 50A in this example on the opposite rising wall portion 5 on the roof of an adjacent concrete building.
2 and the clamp 5
0 is fixed. A hook 48 extending from the stay cable 44 is passed through a cut ring 56 partially cut off, and a screw 58 is attached to the hook 4.
8 and screwed into a retaining ring 56 to hook the hook 48.

When using the gondola suspension type working device according to the embodiment of the present invention, the gondola 14, the arm 1
8, the main parts constituting the device such as the wheel support frame 22, the guide roller support frame 34, the water tank 36, the frame 38, etc. are carried in a state of being separated, respectively, and on the roof of the building 10, the arm 18, the wheel support frame 22, the guide roller The support frame 34, the water tank 36, the frame 38 and the like are assembled as shown in FIG. The suspension cable 16 from the binding unit 20 extends along the arm 18 to the gondola 14 via the distal end thereof. The hook 48 of the stay cable 44
Is mounted on an appropriate portion such as the rising wall portion 52 on the opposite side of the roof of the concrete building, and the tension is applied to the stay rope 44 by winding the stay rope around the winch 46.
To take. An operator rides in the gondola 14 and winds the suspension rope around the winch drum 42A by operating the winch 42, thereby positioning the suspension rope at a predetermined height on the wall surface. And when moving in the lateral direction, the gondola 14 is once lowered to the ground by the winch 42,
The wheel support frame 22 is laterally moved by the wheel 26 and the water tank frame 38 is moved by the wheel 40. that time,
Since the guide roller 30 is engaged with the inner wall surface, the wheel 26 can be moved without coming off from the narrow cap 28 even if it is narrow. After the lateral movement to the predetermined position, the operator gets on the gondola 14 again, raises the wall to a predetermined height by operating the winch 42, and continues the operation.

In the present invention, the height position of the gondola 14 is basically maintained by the moment ratio (difference) between the gondola 14 and the water tank 36. That is, assuming that the length of the arm on the gondola side from the wheel support frame 22 as a fulcrum is X, and the length on the water tank 36 side is Y, the weight of the gondola including the worker is W1, and the water tank including the frame 38 is the water tank. 36
Assuming that the weight of the gondola 14 is W2, FIG.
Clockwise moment M1 is X × W1, and the counterclockwise moment by water tank 36 is M2 is X × W2
Becomes See the schematic diagram shown in FIG. And, suppose that the weight of the gondola including the worker is 350 kg and the water tank 3
Assuming that the weight of No. 6 is 350 kg, which is the same weight, the arm length ratio X
By setting / Y to １ ／, the clockwise moment M
The counterclockwise moment of 1 (moment in the direction of dropping the gondola) can be three times larger than M2 (moment in the direction of holding the gondola). That is,
In the above example, the force of pressing the frame 38 including the water tank 36 against the concrete surface is 2 × 350 = 700 kg greater than the force for dropping the gondola, and the gondola can be kept in a stable state. Further, since the guide roller 30 is in contact with the projecting portion 10B on the roof of the concrete building, and the stay cable 48 is hung on the rising wall portion 52 as a locking portion, the worker can go to the gondola 14. The movement of the arm 18 in the direction of the gondola (to the right in FIG. 1) during riding can be reliably restricted.

As an embodiment of the present invention, the use of the water tank 36 as a weight means that the gondola is stably maintained with respect to the total weight of the gondola irrespective of the arm length difference YX by appropriately changing the amount of water filled therein. There is an effect that it can be adjusted almost arbitrarily so as to maintain a possible moment ratio (difference).

It is also possible to use a sand tank instead of the water tank 36 and maintain the moment ratio by adjusting the weight of the sand contained in the sand tank.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a simple assembling type gondola suspension type working apparatus of the present invention.

FIG. 2 is a schematic front view of a simple assembling type gondola suspension type working apparatus of the present invention.

FIG. 3 is a diagram illustrating an example of a method of mooring a stay cable.

FIG. 4 is a schematic diagram illustrating a force (moment) relationship between a gondola and a weight with respect to an arm.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Concrete building 10A ... Concrete building wall surface 12 ... Gondola hanging work apparatus 14 ... Gondola 16 ... Hanging rope 18 ... Horizontal arm 20 ... Bundling part 22 ... Wheel support frame 24 ... Support plate 26 ... Wheel 27 ... Fence 30 ... Guide roller 32 ... Street 36 ... Water tank 38 ... Side moving frame 40 ... Wheel 44 ... Staying cable 48 ... Hook 50 ... Screw clamp 56 ... Retaining ring 58 ... Screw M1 ... Clockwise moment (moment in the direction to drop the gondola) M2: counterclockwise moment (moment in the direction to hold the gondola)

Claims (6)

[Claims] 1. A working device for suspending and using a gondola for working on a wall surface of a building, wherein the working device is arranged so as to apply substantially only a compressive load to the building at a fulcrum as an intermediate point thereof. The gondola is suspended at one end of the arm, and at a distance longer than the distance from the fulcrum to the suspension point of the gondola, the weight is applied to the building at the other end of the arm with substantially only a compressive load. A simple assembling type gondola suspension type working device, characterized in that the working device is provided. 2. The simple assembling type gondola hanging type working apparatus according to claim 1, wherein the fulcrum and the weight body are movable laterally. 3. The simple assembling type gondola hanging type working apparatus according to claim 1, further comprising a stay cable for restricting movement of the arm to the gondola side. 4. The invention according to claim 1, further comprising a guide roller close to the fulcrum, wherein the guide roller is arranged so as to engage with the wall of the building when the arm moves toward the gondola. A simple assembling type gondola suspension type working device. 5. The simple assembling type gondola suspension type working apparatus according to claim 1, wherein the weight body is a water tank. 6. A simple assembling type gondola suspension type working apparatus according to claim 1, wherein said weight body is a sand tank.