JPH0543162A - Rope replacement device for elevator - Google Patents

Abstract

PURPOSE:To shorten the assembling and disassembling time, in a rope replacement device for carrying out rope replacement by hanging an elevator cage from the top of an elevating passage with any other lifting tool than a rope, by installing a removable and foldable scaffolding at a balance weight. CONSTITUTION:After a worker A rides on the top of an elevator cage and moves it up to the middle position where the elevator cage and a balance weight 5 pass each other, and engages the engagement part 6a of a foldable scaffolding 6 with the frame 5a of the balance weight 5, he moves the elevator cage to the approximately highest floor. A worker B lifts down any other lifting tool than a rope fixed in a machine room located at the top of the lifting passage. The worker A fixes a chain block at the end of the other lifting tool which is lifted down on the elevating passage, and by hanging the elevator cage, the balance weight 5 is kept on a tip floor. A worker C rides on the foldable scaffolding 6 which is engaged with the balance weight 5 through a ladder, and steps onto it with a locking device 6g released and opened for replacement of the rope.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator rope changing device.

[0002]

2. Description of the Related Art In a conventional apparatus, an elevator car including a basket and a counterweight that is suspended in a hoistway by a hoisting machine via a rope is suspended above the hoistway from the rope. In an elevator rope exchanging device that suspends with a tool and exchanges old and new ropes that connect a car and a counterweight, it was necessary to construct a scaffold for rope replacement on the counterweight side near the hoistway floor. As a reference example of this type, Japanese Utility Model Laid-Open No. 10-103672 is cited.

[0003]

By the way, the frame of the counterweight generally has a height of 2.5 m or more. Therefore, according to the above-mentioned conventional technique, in order to replace the rope on the counterweight side in the vicinity of the floor of the hoistway, it is necessary to build a scaffold for it, and it takes a lot of time to disassemble and assemble it.

An object of the present invention is to provide an elevator rope changing apparatus which does not require the above-mentioned scaffold for assembly.

[0005]

In order to achieve the above object, the present invention provides an elevator car including a basket and a counterweight suspended in a hoistway by a hoisting machine via a rope. , In the elevator rope changer that suspends the rope connecting the car and the counterweight on the upper part of the hoistway with a suspender other than the rope, a detachable foldable scaffold is provided on the counterweight. It is a thing.

[0006]

In the present invention, when the balance weight and the car come to the position where the car passes each other, the car is stopped, and a worker riding on the car attaches a detachable foldable scaffold to the balance weight,
Since the rope replacement work can be performed on the scaffold when the counterweight is positioned near the hoistway floor, the conventional scaffold is not required.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Fig. 1 is a sketch of the folding scaffold in use, Fig. 2 is a side view of the folding scaffold in an open state, Fig. 3 is a side view of the folding scaffold in a folded state, and Fig. 4 is a balance between balances and weights. Position hoistway schematic, Figure 5
Figure 3 shows a schematic of the hoistway when the basket is held.

1 is a hoist, 2 is a hoistway, 3 is a rope, 4
Is a basket connected to the rope 3, 5 is a counterweight suspended in a rope-like manner through the rope 3, 5a is a frame for the counterweight, 5b is a weight for balancing with the car 4, 6 is a counterweight 5 A detachable foldable scaffold, 6a an engaging portion for engaging the counterweight frame body 5a, 6b a handrail portion for ensuring worker safety when the foldable scaffold is opened, 6c a work floor, 6d is a brace that holds the floor when the folding scaffold is opened, 6e is a fulcrum pin that serves as a fulcrum when the folding scaffold is opened and closed, 6f is a slit portion required for movement when the folding scaffold is opened and closed, and 6g is not opened during movement Lock device.

In the above construction, first, the worker A gets on the car 4, moves it to an intermediate position where the car and the counterweight pass each other, and engages the engaging portion 6a with the frame 5a of the counterweight. Move to near the top floor. On the other hand, the worker B lowers a lifting tool, which is fixed to the machine room located at the uppermost part of the hoistway 2 and is fixed thereto, to the hoistway. The worker A attaches a chain block (not shown) to the tip of the other lifting tool that has come down to the hoistway, and suspends the car 4 so that the counterweight 5 is held on the pit floor. The worker C climbs up to the foldable scaffold 6 engaged with the counterweight 5 with a ladder and releases the lock device 6g to open it and exchanges the old and new ropes. After exchanging the old and new ropes, the worker C closes the folding scaffold 6 engaged with the counterweight 5 from above the ladder and locks the lock device 6g to exit from the pit. The worker A loosens the chain block that suspends the car, lowers the car 4, removes the chain block, moves the car 4 to a position where it passes the balance weight 5, removes the folding scaffold 6 from the frame 5a, and again. Move the car to near the top floor. In the machine room located near the uppermost floor, the worker B removes the above-mentioned hanging equipment different from the rope fixed there and exchanges the old and new ropes. This eliminates the need to install an assembly scaffold, which was conventionally required for rope replacement, and can reduce much time required for assembly and disassembly.

[0010]

According to the present invention, when the balance weight and the car come to the position where the car passes each other, the car is stopped, and a worker riding on the car attaches a detachable foldable scaffold to the balance weight, and the balance weight. Since the rope replacement work can be performed on the scaffold when the vehicle is located in the vicinity of the hoistway floor, the conventional scaffold is not required, and therefore, the time required for assembling and disassembling the scaffold can be shortened.

[Brief description of drawings]

FIG. 1 is a schematic view of a folding scaffold in use according to an embodiment of the present invention.

FIG. 2 is a side view showing a state in which a folding scaffold is opened.

FIG. 3 is a side view of the folding scaffold in a folded state.

FIG. 4 is a schematic view of a hoistway at a position where car and counterweight pass each other.

FIG. 5 is a schematic view of a hoistway when a car is held.

[Explanation of symbols]

 1 Hoisting machine 2 Hoistway 3 Rope 4 Basket 5 Counterweight 6 Folding scaffolding

Claims (1)

[Claims] 1. An elevator car including a basket and a counterweight that is suspended in a hoistway by a hoisting machine via a rope in a slanting manner, and is suspended above the hoistway by a hoist other than the rope. An elevator rope exchanging device for carrying out old and new exchanging of a rope connecting a car and a counterweight, wherein a detachable foldable scaffold is provided on the counterweight.