JP2528328Y2 - Handrail device for mobile workbench - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handrail device for an electric pole, a signal tower, a sign board, and other lifting and lowering work platforms used for construction work at a high place.

[0002]

2. Description of the Related Art Generally, in high-place work such as wiring work,
It is known to use a ladder that stands up against an object without independence and uses a lifter that can move up and down independently.However, considering the safety of workers to prevent falling when ascending and descending, telescopic booms are used. 2. Description of the Related Art It is known to dispose a movable platform with handrails so as to be able to move up and down.

[0003]

Conventionally, this type of moving table provided with a handrail device has a complicated structure except for being assembled and used on the moving work table at the time of work, resulting in a large scale and expensive. It is necessary to simply assemble and disassemble the vehicle to make it suitable for running the work vehicle.
There was a problem that the disassembly was troublesome, the work was complicated, and the work life was poor. The present invention properly eliminates these conventional disadvantages,
It is an object of the present invention to provide a handrail device in a movable workbench in which the handrail device can be assembled or folded with one touch, thereby shortening the working time and simplifying the handling, in a simple and inexpensive form. .

[0004]

According to the present invention, the lower portions of the columns 1 are respectively mounted on brackets 4 pivotally connected to the four corners of a work table 3 by pivots 2, and a pair of opposite columns is provided. 1, 1 and 1 respectively, the interlocking support 5
Are connected in parallel with each other by moving in parallel at the pivot 6
A support rod door 8 composed of a link connected by a pivot support 7 is provided above the supports 1, 1 so as to be expandable and foldable, and locking members 9, 10 for maintaining an upright state are provided with the work table 3 and This is a handrail device in a movable workbench, which is provided on the support door 8.

[0005]

In the handrail device of the mobile worktable of the present invention, when one of the columns 1, 1 on the worktable 3 is raised, the other is interlocked with the interlocking support rod 5 via the bracket 4 which rotates around the pivotal connection portion 2. The struts 1 and 1 are also caused to follow each other, and are erected on the floor plate 3 at a distance from each other, and the retaining member 9 of the bending lever is expanded to project and hold between the work table 3 and the bracket 4. Thereafter, the support door 1 connected to the upper portion of the support 1, 1 by the pivot support 7 is expanded while deforming into a rhombus shape, and the locking member 10 is fitted to the opposite support 1, thereby forming a frame-shaped column. It surrounds the periphery, is assembled as a handrail of a work table, and is moved up and down along the beam 14 to be used for each work. Also,
At the time of folding, the locking member 10 of the work door 3 is bent in a straight line along the column 1 while removing the locking member 10 of the supporting door 8 from the other column 1 and moving it toward one of the columns 1. When one of the columns 1 is pushed down while pushing it up, it is mounted horizontally on the work table 3 in a form in which the columns 1, 1 are flattened and crushed by the reverse movement of the assembling, and mounted on the mobile work vehicle without bulk Is what is done.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the examples of FIGS. 1 to 6. The pillars 1, 1 provided at four corners of a worktable 3 serving as a work scaffold and spaced from each other. In a work table provided as a frame-shaped handrail with a support rod connected between the frames, each of the columns 1 is attached to a bracket 4 which is pivotally connected to each of the four corners of the work table 3 by pivots 2. The lower part is attached, and the work table 3 is
The interlocking support rods 5 are parallelly moved by the pivots 6 so as to be connected in an inverted manner, and the support doors 8 composed of links connected by the pivots 7 to the upper portions of the columns 1, 1 are freely deployable. Locking member 9, which is provided so as to be foldable, and
Reference numeral 10 denotes a handrail device in a movable worktable equipped with the worktable 3 and the support door 8.

[0007] In this case, the result from the inverse U-shaped pipe member having Ran杆1 ₁ as post 1, there is being provided a pair on both sides of the worktable 3, post 1 of both sides , 1 with the locking door 1
0, for example, a key-like engaging support piece 10 _1, the engagement support piece 10 ₁
Is preferably provided so as to be able to be freely engaged and disengaged with an engaging groove or a concave portion or a hole into which the can be inserted. Further, as the engaging member 9, a resilient joint lever is used to be stretched between the work table 3 and the bracket 4 to form a strut structure for preventing the columns 1, 1 from falling down. It is easy to rotate around 2.

The work table 3 is mounted with a mounting member 11 on a slider that moves the floor plate up and down on a beam 14 of a work vehicle. The angle adjusting mechanism is constituted by a lock pin 12 for latching and a fitting hole 13 of the lock pin 12 to maintain a horizontal state with respect to the inclined beam 14 to improve stability. Help.

The mounting member 11 is pivotally connected to the work table 3 by a pivot 20 so that the position of the attachment member 11 relative to the work table 3 can be changed by a latching structure using the lock pin 12 for locking. The lock pin 12 is provided on the support piece 22 so as to be able to protrude and retract by a spring 21 so that it can be selectively inserted into one of a plurality of fitting holes 13 formed in the mounting member 11.

In the figure, reference numeral 15 denotes a grip mechanism which is attached to the tip of the boom. 16 is a winch mechanism, 17 is a beam fixing and supporting mechanism, 18 is a driving motor, 23 is a cover, 24 is a reinforcing rod, 25 is a hook, 28 is a holding piece, 29 is a joint pin, and 30 is a latch ring. is there. The support door 8
Although it is provided on the front surface of the worktable 3, it may be provided on both front and rear sides, and it is also possible to provide a locking member 9 on both sides to enhance safety. It is also considered that a bridge is provided between the struts 1 and 1 on a partition plate 26 for scaffolding to enhance safety.

[0011]

According to the present invention, the lower portions of the columns are respectively mounted on brackets pivotally connected to the four corners of the worktable at pivot portions, and the pair of opposed columns are parallel to the worktable. In addition to connecting the interlocking support rods in parallel with the pivotal support part so as to be capable of inverting, a support door composed of a link connected to the support part at the upper part of the support part is provided so as to be freely expandable and foldable,
In addition, by equipping the work table and the support door with the locking member for maintaining the upright state, the entire handrail can be assembled and folded by one-touch operation of inverting the support, and the safety of the work platform can be maintained during the assembly. While it is possible, it can be folded flat and compact and can be installed without bulk when a mobile vehicle is traveling.It is easy to handle, the configuration is simple and maintenance security is easy, and the working time can be greatly reduced. It becomes.

[Brief description of the drawings]

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

FIG. 2 is a plan view of the entire configuration.

FIG. 3 shows a folded state in a side view of a use state.

FIG. 4 is a plan view of a folded state.

FIG. 5 is a side view in an assembled use state.

FIG. 6 is a front view in an assembled use state.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS ₁ Support | pillar 1 1 column rod 2 pivot part 3 work table 4 bracket 5 interlocking support rod 6 pivot part 7 pivot part 8 support door 9 locking member 10 locking member 11 mounting member 12 lock pin 13 fitting hole

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroyuki Hosoda 1-25-17 Himonya, Meguro-ku, Tokyo Inside Tokyo Communication Materials Co., Ltd. (72) Inventor Toshiyuki Hirahara 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo No. Nippon Telegraph and Telephone Corporation (72) Inventor Katsuya Yanagisawa Nippon Telegraph and Telephone Corporation, 1-6-1, Uchisaiwaicho, Chiyoda-ku, Tokyo (56) References Japanese Utility Model Sho 61-1441459 (JP, U) 52-6532 (JP, B2) JP 3-22341 (JP, B2)

Claims (3)

(57) [Scope of request for utility model registration] 1. A lower portion of a column 1 is attached to a bracket 4 pivotally attached to a corner of a work table 3 by a pivot portion 2 so that the work table 3 is attached to a pair of opposed columns 1 and 1, respectively. The interlocking support rods 5 are parallelly moved by the pivots 6 so as to be connected in an inverted manner, and the support doors 8 composed of links connected by the pivots 7 to the upper portions of the columns 1, 1 are freely deployable. A handrail device for a movable worktable, wherein the worktable 3 and the support door 8 are provided with locking members 9 and 10 for holding the upright state. Wherein said post 1 is comprised of an inverted U-shaped pipe member having Ran杆1 _1, there is being provided a pair on both sides of the worktable 3, post 1 of the both sides,
The handrail device according to claim 1, wherein the support door (8) provided between the first and second support members (10) is detachably provided by a locking member (10). 3. The worktable 3 is mounted on a slider that moves up and down on a beam 14 of a work vehicle by a mounting member 11, and a mounting angle adjusting mechanism corresponding to the inclination angle of the beam 14 is attached to the mounting member 11. 3. The handrail device according to claim 1, further comprising: a lock pin 12 and a fitting hole 13 of the lock pin 12.