JPH0433345B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is a working device for performing work at heights and demolition work on cone-shaped structures with tapered tips such as utility poles, concrete poles, chimneys, etc. It is related to.

(Prior art and its problems) The main conventional method for dismantling cone-shaped structures such as telephone poles and chimneys is to first cut down the lower part of the target structure like when cutting down a tree. This method has disadvantages, such as requiring a site that is as wide as the length of the top of the tree that will fall, and that it is dangerous because the direction in which it will fall cannot be determined very accurately.

Another method is to erect scaffolding materials such as logs or single pipes from below around the target structure, surround it with a sheet to prevent parts, tools, debris, etc. from falling, and then collect the broken debris from above. There is a method of dismantling it while lowering it to the bottom using a duct chute, but this method requires assembling the scaffolding materials and removing the disassembled single pipe, so there is a risk of the scaffolding materials falling, and the assembly and disassembly. There are disadvantages such as extremely difficult labor.

Furthermore, there is a method of using a tower vehicle to go to the vicinity of the target structure and work, but it requires a site where the tower vehicle can fit, the work area is limited in terms of height and work surface, and it requires effort. It had drawbacks such as not being able to.

Although methods have been adopted in which the above-mentioned techniques are used in combination, the above-mentioned drawbacks have not yet been overcome.

(Means for Solving the Problems) The present invention has been researched to solve the above-mentioned drawbacks, and utilizes a structure in which structures such as telephone poles and chimneys become thicker from the top to the bottom, and The inner surface of the shaped workbench is tightened to the outer surface of the structure to prevent the workbench from falling unintentionally, while allowing work such as dismantling the structure from the top down.

The present invention will be described in detail with reference to illustrated embodiments. A pair of opposing frames 1, 1, operating mechanisms 2, 2...
and clamping rods 3, 3, which are pressed against the side surfaces of the cone-shaped structure 4 by the operating mechanism 2. It has an enclosure part 5 that fits into the side surface of the body-like structure 4, and mutually opposing surfaces 6, 6 of the frames 1, 1 can be freely connected, and the operating mechanism 2,
2... are helical shafts 7, 7 which are supported on the upper and lower sides of the outside of the enclosure portion 5 of the frames 1, 1, reducers 8, 8 linked to these helical shafts 7, 7, and these reducers 8, 8. The spiral shafts 7, 7 are provided with reverse threads on the left and right, and a female thread body 10, 10 is screwed into each screw portion. By this operation, the helical shafts 7, 7 rotate, and the female screw bodies 10, 10 are moved left and right. The handles 9, 9 protrude from the upper surface of a workbench 13, which will be described later.

Tightening rods 3, 3... have corresponding female screw bodies 10, 10
It is removably fixed to the attachment parts 11, 11 of and is adjusted to move left and right as the female screw bodies 10, 10 move left and right, and press against the side surface of the cone-shaped structure 4.

In the figure, reference numerals 12 and 12 refer to guide rollers that are supported between the support frames 1 and 1 by projecting upward and downward from each other at inward positions facing each other after the frames 1 and 1 are connected, and these guide rollers 12 and 12 are shaped like a cone. It rolls on the outer surface of the cone-shaped structure 4 when the structure 4 is pulled upward.

13 is a workbench assembled on the upper part after the frames 1, 1 are connected, 14, 14 are hook bolts for hanging, and 15 is a non-slip plate applied to the inner surface of the tightening rods 3, 3... , tightening rod 3 and cone-shaped structure 4
intervening between.

Reference numeral 16 denotes a lifting device which consists of a wire 18 suspended from pulleys 17 and 17 provided at the top and bottom of the cone-shaped structure 4, and a winch 19 that pulls the wire 18. Used for hoisting on top of.

In addition, when the periphery of the target pyramidal structure 4 is circular, it is preferable to curve the tightening rods 3, 3, etc., or to interpose a curved member. Alternatively, a hydraulic mechanism or the like may be used as the operating mechanisms 2, 2, . . . to move and adjust the tightening rod 3.

(Function) The present invention is embodied as described above, and the construction sequence is as follows: First, the pulley 17 is attached to the top of the conical structure 4 using existing step bolts, etc.
After removing the step bolts etc. attached to the surface of the cone-shaped structure 4, the frames 1, 1 are fitted from both sides of the cone-shaped structure 4, and the mutually opposing surfaces 6, 6 are fitted.
After connecting the guide rollers 12 and 12, the work table 13 is assembled. By fixing one end of the wire 18 to the hook bolt 14 and pulling the other end of the wire 18 with the winch 19, the frames 1, 1 and the workbench 13 assembled are slightly tilted, and the guide rollers 12, 12 are shaped like a cone. It is fried while rolling on the surface of structure 4. During this hoisting process, a work ladder (not shown) is placed on the workbench 13.
Install it by adding parts. After raising the workbench 13, support frames 1, 1, etc., rotate the operating handle 9 to move the female screw body 10 to a position on the side of the conical structure 4, and attach the tightening rods 3, 3, etc. to the mounting part 11. Attachment: Place the anti-slip plate 15 on the inside of the tightening rods 3, 3..., and press the tightening rods 3, 3... while adjusting them to the surface of the cone-shaped structure 4 while operating the operating handles 9, 9. Keep the support frames 1, 1 horizontal. After tightening horizontally, the lifting device 16 is removed, a dust chute (not shown), etc. is attached, and dismantling work is carried out, and work is carried out by lowering the work platform 13 in order while operating the operating handle 9.

During the work, a band 21 for attaching the safety steel 20 is fixed to the cone-shaped structure 4 above the workbench 13, and the band 21 and the workbench 13 are connected by a lifeline 20 to ensure safety.

(Effects) As described above, the present invention consists of a pair of opposing frames, a tightening rod, and an operating mechanism for operating the tightening rods, and the frame has an enclosure that fits into the side surface of the cone-shaped structure. In addition, the opposing surfaces can be connected freely, and the tightening rod is arranged to protrude and adjust freely inside the enclosure of the frame and can be pressed against the conical structure, so that it can be easily pressed against the conical structure, so that it can be used at a high height during dismantling work such as chimneys. It can be installed horizontally while adjusting the tightening rod in place, and since the cone-shaped structure becomes thicker toward the bottom, the tightening rod does not spread out, so it will not fall accidentally. It is safe, and when descending, the frame body etc. will naturally descend by its own weight by expanding the clamping rod little by little, and you can simply adjust the clamping rod by operating the operating mechanism. The workbench can be placed horizontally, making it easy to prepare for the next task.

Furthermore, when lifting this device to a high place, it can be lifted using simple lifting devices such as pulleys, winches, and wires, so work can be done in narrow spaces, and there is no need to assemble scaffolding, so the work can be done quickly. It is safe because there is no risk of falling parts, etc.

[Brief explanation of drawings]

FIG. 1 is a front explanatory view of a working device according to the present invention in a raised state, FIG. 2 is an explanatory plan view of the device of the present invention, and FIG. 3 is an explanatory view of the same side. 1 is a frame, 2 is an operating mechanism, 3 is a tightening rod, 4 is a cone-shaped structure, 5 is an enclosure, 6 is an opposing surface, 7 is a spiral shaft, 9 is an operating handle, 10 is a female screw unit, 13 is a workbench.

Claims (1)

[Claims] 1 Consists of a pair of opposing frames, a tightening rod, and an operating mechanism for operating the tightening rod, and the frames have enclosures that fit into the sides of the cone-shaped structure, and their opposing surfaces are A working device for a cone-shaped structure, which can be freely connected, and a tightening rod is arranged to protrude and adjust freely inside the enclosure of the frame body, and can be freely pressed against the cone-shaped structure.