JP2010216169A - Extendable workbench - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To arrange scaffolding for work in an optimum position corresponding to each side of a tower-shaped object by changing an outer diameter of a workbench in accordance with the change in the outer diameter of the tower-shaped object. <P>SOLUTION: The extendable triangular workbench A is constituted so that it has a nearly triangular shape in cross section by combining a plurality of workbench bases 1 and a plurality of bending-type workbench auxiliary parts 2. Each of the workbench bases 1 is arranged so as to face each of the sides of the tower-shaped object, and each of the bending-type workbench auxiliary parts 2 is arranged so as to face a corner of the respective sides of the tower-shaped object. Each of the bending-type workbench auxiliary parts 2 has both ends supported by each of the workbench bases 1 which faces with each other, while being coupled in such a manner as to be taken in/out with the respective workbench bases 1. The workbench bases 1 is supported by a wire 5 hanging from the top of the tower-shaped object. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a tower work table. In this work table, one end of a wire body or the like is fixed to the upper part of a tower or the like such as a steel tower, and the other end of the wire body is attached to the work table, thereby attaching the work table to the outer periphery of the tower or the like. Hanging on the striated body, an operator gets into the work table and hoisting or feeding the striated body with a winder, etc., raises and lowers the work table up and down, at any place on the tower, An operator performs work such as painting of a tower-like object from the work table.

  As a work table suspended along the side surface of the triangular iron tower, a triangular iron tower working gondola having a substantially triangular cross section provided with a work scaffolding so as to face the side surface of the triangular steel tower according to the shape of the triangular iron tower is disclosed in Patent Document 1. It is described in.

  In addition, a work gondola provided with driving means for arranging a plurality of gondola so as to surround the outer periphery of the tower-like structure, passing a scaffold plate between the gondola, and extending and contracting the scaffold plate according to the mutual interval between the gondola A device is described in US Pat.

Design Registration No. 1247347 Japanese Patent No. 28005629

  However, even in the case of a straight tower with no bend point, the side face of the triangle tower is inclined and the outer diameter of the horizontal section changes in the vertical direction. In the triangular tower working gondola described in Patent Document 1, the outer diameter of the working gondola cannot be changed in accordance with the change in the outer diameter of the triangular tower. Also, when painting the lower surface of the ring part of the tower, which is the stage for attaching the antenna to the tower, the outer diameter of the ring part is larger than the outer diameter of the work gondola, and is far from the scaffold of the work gondola Because it becomes a place, it was not possible for the workers to reach it, and it was necessary to provide a separate suspension scaffolding.

  In addition, the working gondola device described in Patent Document 2 is configured by passing a scaffolding plate between the independent gondola having a substantially square cross section as described above, and a plurality of gondola having a circular cross section. It is arranged on the outer periphery without any corners. When the working gondola device described in Patent Document 2 is arranged in a tower with a square cross section like a triangular tower, the gondola cannot be arranged to face each side of the triangular tower. It will be arranged at each side corner of the triangular steel tower, and there will be a distance between this working gondola device and each side of the steel tower, and the hand of the operator who has boarded will not reach the side of the steel tower.

  The present invention takes the above-mentioned conventional technology into consideration, and is a telescopic work table in which a work scaffold can be arranged at an optimal position in accordance with a change in the outer diameter of a tower having a triangular or quadrangular section. It is for the purpose of provision.

In order to achieve the above object, according to the first aspect of the present invention, the horizontal section has a substantially triangular shape and is hung from above on the outer peripheral surface of a tower whose outer diameter changes in the vertical direction. A workbench for performing work on the outer peripheral surface of the object,
The work table is configured to have a substantially triangular cross section by combining a plurality of work table bases and a bent work table auxiliary unit,
Each worktable base is disposed to face each side of the tower,
Each bendable worktable auxiliary portion is disposed so as to face each side corner of the tower,
Each bendable workbench auxiliary part is supported by each workbench base opposite to both ends thereof, and is joined to each workbench base so as to be freely accessible.
Each of the work table bases is supported by a linear body suspended from the upper part of the tower-like object, and provides an extendable work table.

In the invention of claim 2, the horizontal section has a substantially quadrangular shape and is hung from above the outer peripheral surface of the tower whose outer diameter changes in the vertical direction. A workbench that performs
The work table is configured to have a substantially square cross section by combining a plurality of work table bases and a bent work table auxiliary unit,
Each worktable base is disposed to face each side of the tower,
Each bendable work table auxiliary portion is disposed to face each side corner of the tower,
Each bendable workbench auxiliary part is supported by each workbench base opposite to both ends thereof, and is joined to each workbench base so as to be freely accessible.
Each of the work table bases is supported by a linear body suspended from the upper part of the tower-like object, and provides an extendable work table.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the work table base is provided with drive means for taking in and out the bent work table auxiliary parts on both sides, and the drive means can be operated synchronously with each other. It is characterized by that.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the work table base portion protrudes inside the telescopic work table.

  According to invention of Claim 1, since it is comprised so that a worktable base part and a bending type worktable auxiliary | assistant part may become a cross-sectional substantially triangular shape, it is optimal along each side surface of the tower-shaped object of a cross-sectional triangle. A working scaffold can be provided. In addition, by adopting a structure in which the worktable base and the bent worktable auxiliary part are joined so as to freely enter and exit, the outer diameter of the worktable can be changed in accordance with the change in the outer diameter of the tower. The work scaffold can be arranged at an optimal position corresponding to each side of the. For this reason, it is possible to paint the lower surface of the ring of the steel tower at a location away from the side surface of the steel tower from the work table, and there is no need to provide a separate suspension scaffold.

  Further, according to the invention of claim 2, since the work table base and the bent work table auxiliary part are combined so as to have a substantially quadrangular cross section that can be expanded and contracted, Even if the outer diameter of the horizontal section changes, an optimal working scaffold can be provided along each side surface.

  According to the invention of claim 3, the work base is provided with drive means for taking in and out the bent work table auxiliary parts on both sides, so that the work can be suspended from the outer peripheral surface of the tower-like object from above. The outer diameter of the work table can be changed in accordance with the change in the outer diameter of the tower-like object while being on the vehicle.

  Further, according to the invention of claim 4, since the work table base is configured to protrude to the inside of the work table, the work such as painting is also performed on the inner members such as the flange part of the steel tower and the beam material. It becomes possible.

  In this invention, the horizontal section has a substantially triangular shape and is hung from above the outer peripheral surface of the tower whose outer diameter changes in the vertical direction, and the work of the outer peripheral surface of the tower is performed. The work table is configured to have a substantially triangular cross-section by combining a plurality of work table bases and a bent work table auxiliary unit, and each of the work table bases is configured with each of the towers. The bendable work table auxiliary portions are disposed so as to face the side surfaces, the bendable work table auxiliary portions are disposed so as to be opposed to the side surface corners of the tower, and the bendable work table auxiliary portions are arranged at both end portions thereof. Are supported by respective work table bases facing each other and joined to each work table base so as to be freely accessible, and each work table base is supported by a linear body suspended from the top of the tower. By changing the outer diameter of the tower-like object, the outer diameter of the work table can be changed. It can be arranged work platform to the optimum position corresponding to each side of the.

  FIG. 1 is a bottom view showing a state in which the outer diameter of the telescopic triangular work table A of the present invention is the smallest, and FIG. 2 is a side view of the same state. On the other hand, FIG. 3 is a bottom view showing a state in which the outer diameter of the telescopic triangular work table A is the largest, and FIG. 4 is a side view of the same state. The work table base 1 and the bent work table auxiliary unit 2 are alternately arranged to form a telescopic triangular work table A having a substantially triangular cross section. As shown in FIG. 2, a handrail 3 having a lower side made of punching metal is provided on the outer periphery of the telescopic triangular worktable A over the entire telescopic triangular worktable A. Prevents falling from the triangular work table A. As shown in FIGS. 1 to 4, when the telescopic triangular work table A is expanded and contracted to change the outer diameter, the triangular space generated on the inner periphery of the telescopic triangular work table A also expands and contracts.

  FIG. 5 is a plan view of the telescopic triangular work table A in the state where the outer diameter is the largest, and each bend having a shape in which both sides of the U-shape are opened outward on both sides of each work base 1. Both ends of the mold work table auxiliary part 2 are supported, and both ends of each bent work table auxiliary part 2 are freely accessible to both sides of each work table base 1. A winder 4 is provided at the center of each worktable base 1.

  Further, the handrail 3 is erected on the outer periphery of each worktable base part 1 except for the places where the bent workbench auxiliary parts 2 come in and out. The handrail 3 is also provided. 1 and 2, even in the state where the telescopic triangular work table A is minimized, the handrails 3 inside the bending work table auxiliary parts 2 on both sides of each work table base 1 are mutually connected. It is configured to be spaced. Further, each worktable base 1 and each bent worktable auxiliary part 2 are formed of a planar frame, and are covered with a plate.

  Next, a joining configuration of the worktable base 1 of the telescopic triangular worktable A and the bent worktable auxiliary part 2 will be described with reference to FIGS. 6 and 7. FIG. 6 is a front view showing a drive mechanism of the telescopic triangular work table A, and FIG. 7 is a bottom view thereof. The work table base 1 is provided with substantially U-shaped recesses 6 at both ends in the longitudinal direction. On the other hand, a handrail base 7 and a roller 11 are provided on both sides in the longitudinal direction of the bending work table auxiliary part 2. A rail body 6a having a U-shaped cross section is provided on both sides of the recess 6 of the work table base 1, and a roller 11 of the bent work table auxiliary unit 2 is substantially fitted between the rail bodies 6a. As a result, the work table base 1 and the bent work table auxiliary unit 2 are joined so as to be freely accessible. A screw shaft 8 provided on the work table base 1 and a screw nut 9a of a nut tube 9 fixed to the bent work table auxiliary unit 2 are screwed together. When the screw shaft 8 is rotated using the gear motor 10 fixed to the work table base 1, the screwing point of the nut tube 9 with the screw nut 9 a is changed, and the two bent work tables on both sides of the work table base 1 are changed. The auxiliary part 2 slides synchronously. That is, the gear motor 10 provided in each worktable base 1 is used as a drive source, the screw shaft 8 and the screw nut 9a serve as a drive mechanism, and each bending worktable auxiliary part 2 corresponds to the forward rotation / reverse rotation of the gear motor 10. It is expanded or contracted synchronously. The expansion / contraction operation of the bending-type work table auxiliary unit 2 can be performed in a state where the telescopic triangular work platform A is suspended from the triangular tower B (see FIG. 8) and the worker is on the telescopic work table A. . In the present embodiment, the drive mechanism including the screw shaft 8 and the screw nut 9a is shown. However, the present invention is not limited to this, and a configuration in which a chain (not shown) is expanded and contracted by the gear motor 10 may be used. The handrail stand 7 protrudes from the upper surface of the rail body 6a above the rail body 6a, and the handrail 3 is erected at the location.

  Further, as shown in FIGS. 1 and 3, the work table base 1 is provided with an overhanging portion 12 inside the telescopic triangular work table A. With this configuration, when the overhanging portion 12 is positioned inside the triangular steel tower B, it is possible for workers to reach the flange portion and beam portion (not shown) of the steel tower and perform work. It becomes. The work table base 1 is also provided with an overhang 13 on the outside of the telescopic triangular work table A except for the center. Thereby, when painting the lower surface of the ring part 14 (refer FIG. 8) of the upper end of the triangular iron tower B, an operator can work by standing on the overhanging part 13. The reason why the central portion of the work table base 1 does not protrude outward is to allow the wire 5 (see FIGS. 2 and 4) to be suspended from that position.

  When the telescopic triangular work platform A is configured as described above, as shown in FIG. 8, when the telescopic triangular work platform A is suspended from the side of the triangular steel tower B by the wire 5 via the winder 4, The triangular triangular work table A changes the outer diameter of the telescopic triangular work table A in accordance with the change in the outer diameter of the triangular steel tower B having a bend point at any location. Therefore, the working scaffold can be arranged at an optimal position with respect to the side surface of the triangular iron tower B. Further, since the outer diameter of the telescopic triangular worktable A can be changed, the paintwork on the lower surface of the ring portion 14 of the steel tower at a position away from the side surface of the triangular steel tower B is applied to the telescopic triangular worktable. A can be performed from above.

  In this embodiment, the case where the telescopic triangular work bench A has a substantially triangular cross section is shown. However, for example, the shape of the telescopic triangular work bench A has a substantially square cross section in accordance with the outer diameter of the steel tower. You may comprise. In that case, the bending-type worktable auxiliary part 2 is molded into a substantially L-shape.

It is a bottom view which shows the expansion-contraction type triangular worktable which concerns on this invention. It is a front view which shows the expansion-contraction type triangular worktable which concerns on this invention. It is a bottom view which shows the expansion-contraction type triangular worktable which concerns on this invention. It is a front view which shows the expansion-contraction type triangular worktable which concerns on this invention. It is a top view which shows the expansion-contraction type triangular work table which concerns on this invention. It is a front view which shows the drive mechanism of the expansion-contraction type triangular worktable which concerns on this invention. It is a bottom view which shows the drive mechanism of the expansion-contraction type triangular worktable which concerns on this invention. It is a conceptual diagram which shows the state by which the telescopic triangular work platform which concerns on this invention is suspended from the steel tower.

1: worktable base, 2: bent-type worktable auxiliary, 3: handrail, 4: winder, 5: wire, 6: recess, 6a: rail body, 7: handrail, 8: screw shaft, 9: Nut tube, 9a: screw nut, 10: gear motor, 11: roller, 12: overhang part, 13: overhang part, 14: ring part, A: telescopic triangular work table, B: triangular steel tower

Claims (4)

It is a work table that has a substantially triangular horizontal cross section and is hung from above the outer peripheral surface of the tower whose outer diameter changes in the vertical direction, and performs work on the outer peripheral surface of the tower. ,
The work table is configured to have a substantially triangular cross section by combining a plurality of work table bases and a bent work table auxiliary unit,
Each worktable base is disposed to face each side of the tower,
Each bendable work table auxiliary portion is disposed to face each side corner of the tower,
Each bendable workbench auxiliary part is supported by each workbench base opposite to both ends thereof, and is joined to each workbench base so as to be freely accessible.
Each said work-table base is supported by the linear body suspended from the upper part of the said tower-like object, The telescopic worktable characterized by the above-mentioned. A work table that has a substantially quadrangular horizontal cross section and is hung from above the outer peripheral surface of a tower whose outer diameter changes in the vertical direction, and performs work on the outer peripheral surface of the tower. ,
The work table is configured to have a substantially square cross section by combining a plurality of work table bases and a bent work table auxiliary unit,
Each worktable base is disposed to face each side of the tower,
Each bendable work table auxiliary portion is disposed to face each side corner of the tower,
Each bendable workbench auxiliary part is supported by each workbench base opposite to both ends thereof, and is joined to each workbench base so as to be freely accessible.
Each said work-table base is supported by the linear body suspended from the upper part of the said tower-like object, The telescopic worktable characterized by the above-mentioned.   3. The working table base is provided with driving means for taking in and out the bent-type working table auxiliary parts on both sides, and the driving means enables synchronous operation with each other. Telescopic work bench. The telescopic workbench according to any one of claims 1 to 3, wherein each workbench base projects over the telescopic workbench.

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