JPH0428365Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is a work platform that is attached to a utility pole so as to extend sideways, and is used as a scaffold for working on the utility pole. This is related to the improvement of.

(Prior art) As a conventional pole-top workbench, for example,
The one shown in No. 38882 is known. this is,
It has a mount that is fixed to the outer periphery of the column by a tightening member such as a chain, a horizontal step that has one end removably attached to the mount, and a support leg that supports the lower part of the step on the column.

However, pole-mounted work requires a considerable amount of movement up, down, left and right around the pole, so if you cannot reach your hand from the top of the step, you must either remove the mount from the pole and change the mounting position each time, or move multiple mounts in advance. A step stool must be attached to the pillar. There is a problem in that changing the mounting position of a step stool or attaching and removing a plurality of step stools requires a lot of time and effort.

(Problems to be solved by the invention) This invention attempts to solve the above-mentioned conventional problems, and it is possible to relatively easily move the position of the step up and down and around the pillars, and To provide a column-mounted workbench with a simple structure whose extension length can be freely changed, thereby greatly expanding the range of work on the column.

(Means for Solving the Problems) In order to solve the above-mentioned conventional problems, this invention has an arcuate long guide hole 1a fixed to the outer periphery of the column P and substantially along the outer periphery of the column P. A vertical column 4 is supported around the column P so that its mounting position can be changed by a mounting base 1 and a pin 5a that extends vertically along the side surface of the column P and movably passes through the guide slot 1a at the upper part. A horizontal step 8 is fixed at one end to the vertical support 4 so that its mounting position can be changed up and down, and the step 8 is supported by the step 8 so that it can be inserted into and removed from the step 8 in its extension direction. A column-top workbench is constructed by comprising a telescopic step stool 20 whose height can be adjusted and a support leg 18 extending diagonally downward from the step stool 8 and whose lower end is supported by a vertical support 4.

(Function) Along the guide slot 1a of the mounting base 1, step 8,
20 together with the vertical support 4 within a predetermined range, adjust the mounting position around the pillar P, and adjust the installation position of the step stool 8 in the vertical direction with respect to the vertical support 4,
Further, the extension length of the telescopic step 20 is adjusted by inserting and removing the telescopic step 20 from the step 8. The load on the step stool 8 is supported by the vertical support 4 by the support legs 18.

(Example) A horizontal mounting base 1 is fixed to the outer periphery of a column P by a chain 2 and a fastening fitting 3. The mounting base 1 is formed with an arcuate long guide hole 1a that roughly follows the outer periphery of the column P, and a plurality of pin holes 1b are bored at intervals along the guide hole 1a. There is. 1c is a backing plate along the outer periphery of the pillar P, and is fixed vertically to the inside of the mounting base 1.

The vertical column 4 is made of steel with a C-shaped cross section, extends vertically along the side surface of the column, and is supported by the mounting base 1 via a bracket 5 at its upper end. That is, the vertical support 4 has a horizontal bracket 5 at its upper end, the mounting base 1 is sandwiched between the brackets 5, and the guide slot 1a of the mounting base 1 is connected by a pin 5a.
It is attached so as to be movable around the pillar along the axis, and is fixed by passing a detent pin 6 through matching pin holes 5b and 1b of the bracket 5 and the mounting base 1. The pin 6 can be inserted into and removed from the pin holes 1b and 5b when adjusting the position of the vertical support 4 around the column. A plurality of pin through holes 4a are provided at predetermined intervals in the vertical direction at opposing positions on both sides of the vertical column 4, and a column P is provided at the lower end of the vertical column 4.
It has a roller 7 that can roll on the outer periphery of the roller 7, and a chain 22 that is tightened and fixed to the pillar P.

The horizontal step 8 is supported at one end by the vertical column 4 via a mounting frame 9 and extends to the side of the column P.

The mounting frame 9 that supports one end of the step stool 8 includes a pair of parallel support plates 10, 10 along both sides of the vertical support 4.
are connected by four horizontal shafts 11 surrounding the vertical support 4, and the pin through holes 10a, 10a formed at opposite positions of the support plates 10, 10 and the pin holes 4a, 4a of the vertical support 4 are provided with penetrating pins. 12, it is attached to the vertical support 4 so that its vertical position can be changed. A roller 13 that can roll in contact with the vertical support 4 is supported on the shaft 11 so that the mounting frame 9 can be smoothly moved up and down.

A notch 10b is formed in the upper edge of the support plate 10, and a support shaft 14 of the step stool 8 is supported in the notch 10b so as to be engageable and detachable.

That is, the support shaft 14 is disposed on the lower surface of one end of the step stool 8 so as to cross this, and is rotatably supported at both ends. As shown in FIG. 5, the support shaft 14 has a notch 1 in the support plate.
A recess 14a is formed at the engagement position with the notch 10b, and when the recess 14a is turned to the side, it fits into the notch 10b, and the support shaft 14 is rotated to open the recess 14.
It is designed such that it cannot come out of the notch 10b with the end a facing downward. Further, a fitting recess 14a is formed in the support shaft 14 adjacent to the support plate 10 and located on the opposite side to the recess 14a. The latch shaft 15a of the side-mounted latch device 15 can be depressed. Latch shaft 1
5a is always urged upward by an internal spring.

The wind-up spring 16 is connected to the vertical support 4.
Three upper and lower shafts 16a installed horizontally at the upper end
One end of each spring 16 is locked to a mounting plate 17 fixed to the mounting frame 9, and constantly pulls the mounting frame 9 upward.

The support leg 18 consists of a horizontal rod 18a and a support rod 18b that are connected to each other in a T-shape.
Both ends of the support rod 1 are pivoted to the lower part of the other end of the step stool 8.
8b extends obliquely downward at right angles to the horizontal rod 18a, and its lower end abuts against the vertical support 4 via a roller 18c. The roller 18c is the support rod 1
It is pivotally supported on both sides of the lower end of the vertical column 8b, and can roll on the side surface of the vertical column 4.

The telescopic rod 19 connects one end of the step 8 and the lower end of the supporting leg 18, and by extending and contracting it, the inclination angle of the supporting leg 18 can be adjusted. A triangular shape formed by the rods 19 receives the load on the step 8 and supports it on the vertical support 4.

The telescoping step 20 is nested in the step 8,
A pin hole 8 formed at one end of the step stool 8 is connected to the platform so that it can be inserted and removed horizontally, and one of the plurality of pin holes 20a arranged in a row in the direction of extension of both edges of the step stool 8 is engaged.
a, and by inserting a pin 21 into this, it can be connected to the step stool 8. That is, by inserting and removing the pin 21 into the pin holes 8a and 20a, both steps 8 and 20 are removed.
You can freely adjust the extension length of the step by expanding and contracting it.

When using this workbench, chain 2,
22 to the pillar P, attach the mounting base 1, vertical support 4, and mounting frame 9 to the side of the pillar P, determine the position of the vertical support 4 around the pillar relative to the installation base 1, and fix with the pin 6. At the same time, the mounting position of the mounting frame 9 in the vertical direction with respect to the vertical support 4 is appropriately selected and fixed by the through pin 12, and the step stool 8 is supported on this mounting frame 9. In order to support the step stool 8 on the mounting frame 9, as shown in FIG.
4 into the notch 10a of the support plate 10 with its recess 14a facing the side, and then rotate it at 90°.
Rotate to fit the tip of the latch shaft 15a into the fitting recess 14.
b, making sure not to slip out of the notch 10a. In order to horizontally support the step stool 8, the telescopic rod 19 is adjusted to extend or contract. In this case, the telescopic rod 19
By retracting , the outer end of the step 8 is pushed up. By inserting and removing the telescopic step stool 20, the extension length of the scaffold can be freely adjusted.

When moving the mounting position of the step stool 8 in the vertical direction with the step stand 8 attached, the winding spring 16 always pulls up the step stand 8 together with the mounting frame 9 with a substantially constant force, and balances the own weight of the step step 8 and the telescopic step step 20. It is very light and allows you to easily perform this vertical position adjustment operation.

(Effects of the invention) As explained above, in this invention, the mounting base 1 is fixed to the outer periphery of the column P and has an arc-shaped guide hole 1a substantially along the outer periphery of the column P, and the side surface of the column P. A vertical support 4 is installed around the pillar P and is supported in a manner that allows the position to be changed by a pin 5a extending vertically along the guide hole 1a at the upper part and movably passing through the guide slot 1a. A horizontal step 8 fixed at one end so that its mounting position can be changed up and down, and a telescopic step 20 supported by the step 8 so as to be freely inserted and removed in the direction in which it extends, and whose extension length from the step 8 can be adjusted. , and a support leg 18 that extends diagonally downward from the step platform 8 and whose lower end is supported by the vertical support 4 to constitute a column-mounted workbench;
The height position, position around the column, and extension length of the step stool 8 can be changed freely, so it can easily respond to a variety of tasks, and a single model has the functions of many conventional models. This has the effect of being able to provide a pole-mounted workbench that has the following features.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a front view, FIG. 2 is a side view, FIG. 3 is a plan view, FIG. 4 is a partial perspective view, and FIG. 5 is a partial view. FIG. 1... Mounting base, 1a... Guide slot, 4... Vertical support, 5a... Pin, 8... Step stool, 18... Support leg, 20... Telescopic step, P... Pillar.

Claims (1)

[Claims for Utility Model Registration] A mounting base fixed to the outer periphery of a column and having an arc-shaped guide hole extending substantially along the outer periphery of the column; A vertical support supported around the pillar so that its mounting position can be changed by a pin movably passing through a long hole; a horizontal step fixed at one end to the vertical support so that its mounting position can be changed up and down; A telescoping step is supported on the step so that it can be freely inserted and removed in the direction of extension thereof, and the length of extension from the step can be adjusted; and a support leg extends diagonally downward from the step and has a lower end supported by the vertical support. Pole-top workbench equipped with.