JPH077485Y2 - Retractable rolling tower - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a rolling tower in which the upper part of a scaffold used for ceiling work or the like in construction work can be expanded and contracted.

[Conventional technology]

Conventionally, when performing work using a rolling tower, the upper part of the rolling tower may hit an obstacle when moving a long distance, so to avoid this, the upper building frame with a working floor should be installed against the lower building frame. A retractable rolling tower is known in which a work floor can be moved up and down by sliding it vertically by a manual hydraulic jack.

[Problems to be solved by the device]

The conventional retractable rolling tower is expensive because it uses a hydraulic jack manufactured by precision machining, and there is a problem in that it is not possible to obtain a simple and inexpensive member. An object of the present invention is to provide a rolling tower which can be easily operated and is inexpensive and capable of expanding and contracting.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, the present invention inserts the slide columns of the slide building frame into the fixed columns of the fixed building frame, pivotally attaches one end of both legs of the opening and closing legs to each fixed column and each slide column, and attaches the other end. It provides the means of an extendable rolling tower that is pivotally attached and connected to an open leg screw jack.

〔work〕

 The operation of this invention will be described with reference to an embodiment.

When the operator twists the handle 18, the leg portion 14 of the open leg type screw jack 13 is opened, and both legs 7a, 7b of the open / close leg 7 are opened as shown in FIG. Since the lower leg 7a is pivotally attached to the attachment piece 6a of the fixed support column 4 and the upper leg 7b is pivotally attached to the attachment piece 6b attached to the slide support column 10 of the slide building frame 9, the above-mentioned opening / closing leg The slide strut 10 is pushed upward by the open leg of 7. Although the rolling tower is used in this state, when moving the rolling tower, it is possible to avoid the obstacle by lowering the slide building frame 9 by the operation opposite to the above before hitting the obstacle, In addition, the height of the work floor can be adjusted according to the work place and the work floor can be expanded and contracted.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, 1 has a caster 2 at the lower end and a working floor 3a in the middle, and fixed struts 4 are fitted and fixed at the upper end to form struts 5, and these struts 5 stand vertically at the four corners of the working floor 3a. It is a fixed building frame that is installed, and as shown in FIG.
One of the legs of the open / close leg 7 is attached to the attachment piece 6a attached to the lower part of the
One end of 7a is pivotally attached 8. In FIG. 1, a fixed building frame 1 has upper and lower work floors 3b and 3c, and slide columns 10 are vertically installed at four corners of the fixed building frame 1.
The slide column 10 is fitted into the fixed column 4 of the fixed building frame 1 and supported so as to be vertically movable (see FIG. 2), and a handrail 11 is provided on the upper end of the slite building frame 9. As shown in FIG. 2, the left and right slide struts 10 of the slide building frame 9, the mounting pieces 6b, 6b attached to the lower parts of the slide struts 10, the other leg 7b of the open / close leg 7,
One end of 7b is pivotally attached 8 to the other end of legs 7a and 7a pivotally attached to a mounting piece 6a attached to the lower part of the fixed support column 4, and the other leg 7a.
The other ends of b and 7b are pivotally attached 12 and two open leg type screw jacks 13 are attached between the 12 pivotal attachment points as shown in FIG.

In FIG. 3, the leg portions 14 of the two open leg type screw jacks 13 are pivoted 15 in the front and rear and right and left in a parallelogram shape.
The leg portion 14 that can be opened and closed in the left-right direction is mounted on the other end of one leg 7a of the opening / closing leg 7 pivotally attached to the mounting piece 6a of the fixed support column 4 of the fixed building frame 1 and on the slide column 10 of the slide building frame 9. The other end of the other leg 7b of the open / close leg 7 pivotally attached to the piece 6b is connected to the pivot attachment 15 through the connecting piece 16, and the leg portion 14 of the front and rear two open leg type screw jacks is connected. A common single screw bar 17 is screwed through the front and rear pivot parts 15 to pass through. A handle 18 is attached to the front and rear ends of the screw bar 17.

[Effect of device]

Since this invention uses the open / close legs and the open leg type screw jacks, it can move the slide building frame up and down with extremely small force by two boosters, so it is easy and easy to operate, and the handle can be rotated. The height of the work floor can be adjusted according to various work locations because it can be adjusted to any height by adjusting, and it is cheap because it uses an open leg type screw jack, which contributes to the reduction of construction cost. be able to.

[Brief description of drawings]

1 is a perspective view diagrammatically shown, FIG. 2 is a partial front view, and FIG. 3 is a sectional plan view taken along line III-III of FIG. 1 ... Fixed building frame, 4 ... Fixed support, 7 ... Opening / closing leg, 7a ...
… Legs, 7b …… Legs, 8 …… Pivoting, 9 …… Slide building frame, 10
...... Slide support, 12 ...... Pivoting, 13 ...... Open leg type screw jack.

Claims (1)

[Scope of utility model registration request] Claims: 1. Fixed pillars (4) standing on the four corners of the working floor (3a) of the fixed building frame (1), and standing on the four corners of the working floors (3b) and (3c) of the sliding building frame (9). The installed slide column (10) is vertically movably fitted, and one end (7a) of the opening / closing leg (7) is pivotally attached (8) to the mounting piece (6a) at the bottom of each fixed column (4). Then, the mounting piece (6b) at the bottom of each slide column (10)
One end of the other leg (7b) of the open / close leg (7) is pivotally attached (8)
The pivot points (12) at the other ends of the legs (7a) and (7b) are connected to the front and rear parallelogram legs (14) via the connecting piece (16).
One screw common to the open leg type screw jack (13) connected to the lateral pivoting part (15) of the front and back and front and rear pivoting parts (15) of the parallelogram leg (14). Expandable rolling tower with bar (17) screwed.