JPS63689Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a counterweight for an elevator.

Figures 1 and 2 show a conventional elevator counterweight, which includes a weight frame 4 consisting of upper and lower frames 1 and 2 and side frames 3, and a plurality of adjustment weights 5 housed within the frame. The guide rail 7 is connected via guide rollers 6 attached to the four upper and lower corners of the weight frame 4.
It can be raised and lowered along the way. A suspension wheel 8 is attached to the upper frame 1 of the weight frame 4, and a hoisting rope 9 wound around the suspension wheel 8 is driven to move the counterweight up and down along the guide rail 7. Note that 10 in the figure is a spacer for run-by adjustment.

By the way, when the hoistway is bent in a dogleg shape, the guide rail 7 also needs to be bent in a dogleg shape. There was a drawback that the rollers 6 were pressed by the rails and could not be moved up and down.

The purpose of this invention is to eliminate the above-mentioned drawbacks by dividing the counterweight into a plurality of parts and rotatably connecting each part.

This invention will be explained below with reference to embodiments shown in the drawings. As shown in FIGS. 3 and 4, the side frame 3 of the weight frame 4 is divided into a plurality of parts in the longitudinal direction, and each of the divided side frames 3A, 3B, and 3C has a lower frame 11 and an upper and lower frame 12. , 13, an upper frame 14 is attached, and guide rollers 15 are attached to the four corners of these frames 11, 12, 13, 14 to form a plurality of weight parts 16, 17, 18. These weight portions are rotatably connected to each other via a connecting portion 19. The connecting portion 19 includes a connecting metal 20 having one connecting rod 20a attached to one weight portion adjacent to each other, and a connecting metal 21 having two connecting rods 21a attached to the other weight portion. It consists of a pin 22 that passes through these connecting rods 20a and 21a,
One connecting rod 20a is arranged between two connecting rods 21a, a pin 22 is passed through the two connecting rods 21a so as to be rotatable, and a pin retainer (not shown) is attached to assemble the rod.

As described above, in this invention, the counterweight is movable up and down along the guide rail, and has a plurality of weight parts in which adjustment weights are stored in the weight frame, and adjacent weight parts are arranged perpendicular to the length of the guide rail and guided. Since the rails have connecting parts that are rotatably connected to each other by an axis that connects the rails, the span of each weight part is short, and therefore even if the guide rail is bent, the elements of the weight part along the rail ( The guide rollers (guide rollers) are not pressed by the rails as in the conventional example, and therefore can be smoothly moved up and down even at bent portions of the guide rails.

[Brief explanation of the drawing]

Fig. 1 is a front view of a conventional elevator counterweight, Fig. 2 is a right side view of Fig. 1, Fig. 3 is a front view of a counterweight according to this invention, and Fig. 4 is a - It is a sectional view along a line. 4... Weight frame, 5... Adjustment weight, 16, 17, 18
... Weight part, 19 ... Connection part. In addition, the same parts or corresponding parts in the figures are indicated by the same reference numerals.

Claims (1)

[Scope of utility model registration request] A pair of guide rails are installed in the hoistway of the elevator in a dogleg shape, separated from each other in the front along a vertical line and bent to the same side on the sides, and are attached to the hoisting rope of the elevator, and are driven by the rope. In the counterweight of the elevator that is guided up and down by the guide rail, there are a plurality of weight parts in which adjustment weights are housed in a weight frame that can be raised and lowered along the guide rail, and an adjacent weight part that is moved up and down by the guide rail. A counterweight for an elevator, characterized in that it has a connecting part that is perpendicular to the length of the rail and rotatably connected to each other by an axis that connects the guide rails.