JPH0444534Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to a wire rope changing device.

[Conventional device]

Generally, the wire rope used to raise and lower an elevator car must be replaced periodically, and the replacement work will be explained with reference to FIGS. 4 and 5. A crosshead 3 consisting of a pair of opposing strength members is suspended on a pair of platforms 2 erected on the sides of the car 1, and one end of a wire rope 4 is engaged approximately at the center of the crosshead 3. There is. The other end of the wire rope 4 is connected to a counterweight 6 via a machine room (not shown).
is engaged with. Here, when replacing the wire rope 4, the worker hangs a mounting rope, which is the engaging member 11, on the crosshead 3, and attaches a hook (not shown) of a chain block installed in the machine room to this mounting rope. When engaged, the chain block is operated to pull up the anchor rope, thereby temporarily suspending the car 1, loosening the wire rope 5, and replacing it with a new wire rope.

[Problem that the invention attempts to solve]

As mentioned above, the conventional wire rope changing device uses a pedestal rope as an engaging member, so the shape of the upper part of this pedestal rope hung on the crosshead 3 is inevitably shaped like a figure eight. ,
Because the rope engages with the edge of the rope pit formed in the machine room, there is a limit to the height at which the counterweight 6 connected to the car 1 can be lowered and held, as shown in Fig. 5. Therefore, an auxiliary member called the square timber 12 must be placed. This work requires at least two workers, one to operate the chain block and the other to handle the square timbers 12 and hold the counterweight 6. Due to the high position, there were various disadvantages in terms of improving work efficiency, such as having to set up a scaffold when removing the wire rope 4 that is engaged with the upper part of the counterweight 6. .

SUMMARY OF THE INVENTION An object of the present invention is to provide a wire rope changing device that can easily change wire ropes without limiting the height of temporary suspension of a car.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention has an engaging member comprising a base part that can be engaged from below of a crosshead suspended on the upper part of the car, and an engaging part that engages with a hook provided on a chain block. It is characterized by having the following.

[Effect]

Since the wire rope changing device according to the present invention is constructed as described above, the base of the engaging member is engaged from below the crosshead made with sufficient strength to suspend the car. The car can be suspended temporarily by engaging the engaging part provided at the hook with the hook at the end of the chain of the chain block.This engaging member is extremely easy to install, and can be installed only during work. can.
Therefore, in addition to not requiring the pedestal rope used as the engaging member, since the hook of the chain block is engaged with the engaging part provided at the base of the engaging member, the pedestal rope is not required. Since the rope does not form a figure eight shape as in the case of
The counterweight connected to the car is lowered and can be directly locked to the buffer located below the counterweight, so the work can be done without the need for auxiliary members such as square timbers. can.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

A crosshead 3 is suspended on a pair of platforms 2 erected on the sides of the car 1.
One end of the wire rope 4 is tied to this approximately central portion. As shown in FIG. 3, the crosshead 3 is made up of a pair of opposing strength members, and the base 9 of the engagement member 11 is engaged with the lower part of the crosshead 3. This base portion 9 can be easily locked, and can also be configured to be locked only during work.
The base portion 9 is provided with an engaging portion 10, which is engaged with a hook 8 at the tip of the chain 7 of the chain block. The other end of the wire rope is engaged with the counterweight 6 via a machine room (not shown).

When replacing the wire rope 4, the worker first engages the hook 8 fixed to the tip of the chain 7 of the chain block with the engaging portion 10 of the base 9 of the engaging member 11, and then Operate the chain block to pull up car 1. At this time,
Since the chain 7 does not have an eight-shape like a conventional rope, it does not limit the height of the temporary suspension of the car. As a result, the counterweight 6, to which the other end of the wire rope 4 is engaged, moves downward and can be directly engaged with the shock absorber 5 without having to be held midway.

In this way, the operator can remove one end of the wire rope 4 from the crosshead 3, and also remove the other end engaged with the counterweight 6, and replace it with a new wire rope. As a result, the square beam 12 that holds the counterweight 6 is no longer necessary, and the worker associated with this auxiliary member is also no longer required, so that only one worker operating the chain block can replace the wire rope. Naturally, there is no need to worry about the dangers associated with the work of holding the counterweight.

[Effect of idea]

As explained above, the present invention provides an engaging member comprising a base portion that can be locked from below of a crosshead suspended above an elevator car, and an engaging portion that engages with a hook provided on a chain block. In addition to being able to easily lock the crosshead to a crosshead that is strong enough to suspend a car, the chain block's chain has a figure-eight shape that engages the edge of the rope pit in the machine room. In addition, the wire rope can be easily replaced by one worker without the need for large-scale auxiliary members such as engaging members such as pedestal ropes or square timbers. It can be done quickly and safely.

[Brief explanation of the drawing]

Fig. 1 is an upper perspective view of a car equipped with a wire rope changing device according to the present invention, Fig. 2 is a side view of the counterweight side when the device of Fig. 1 is in use;
Figure 3 is an enlarged view of the main parts of Figure 1, Figure 4 is an upper perspective view of a car with a conventional wire rope changing device installed, and Figure 5 is the counterweight side when the device in Figure 4 is in use. FIG. 1... Car, 3... Crosshead, 4... Wire rope, 7... Chain, 8... Hook, 9
...Base, 10...Engagement part, 11...Engagement member.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A chain block having a hook at the end of the chain, which temporarily suspends the car through an engaging member provided on a crosshead at the top of the car,
In a wire rope changing device for changing a wire rope, the engaging member includes a base that can be engaged with the crosshead from below, and an engaging portion provided on the base that is engageable with the hook of the chain block. A wire rope exchange device comprising: 2. In the utility model registration claim 1, the engaging member is constituted by a pair of strength members with the crossheads facing each other, and the base portion is provided between the strength members. A wire rope changing device featuring: