JP3297345B2 - Governor rope extension method for construction elevators - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction elevator in which a machine room is lifted stepwise in accordance with the progress of building construction work so as to extend a car elevating process sequentially.
Governor rope feeding method .

[0002]

2. Description of the Related Art In general, in building construction of a high-rise building or the like, it takes a lot of time for a construction worker to go up and down a building material from a ground floor to a high-rise floor. This is one of the causes of the inhibition.

[0003] Conventionally, for example, Japanese Patent Application Laid-Open No. Hei 8-13363.
As described in Japanese Patent Publication No. 5 (1993), there has been proposed a construction elevator in which a car room is lifted stepwise according to the progress of building construction work so that a car ascending and descending step is sequentially extended.

In this conventional construction elevator, when extending a car up and down stroke, the car is lifted to a height position where the machine room is located, and the governor rope of the governor device is extended to the length corresponding to the above-mentioned lifting. Was to be replaced.

[0005]

By the way, in the above-mentioned conventional construction elevator, it is necessary to replace the governor rope of the governor device with a longer one in accordance with the height at which the machine room is suspended, and to re-stretch the same. The replacement of the governor rope requires considerable labor and time, resulting in poor working efficiency and high cost.

The present invention has been made in view of such a situation in the prior art, and a first object of the present invention is to step a machine room according to the progress of building construction without changing governor ropes. It is an object of the present invention to provide an elevator for construction that can be lifted.

A second object of the present invention is to provide a construction elevator in which the governor rope can be easily handled when the machine room is lifted step by step, and the length of the governor rope can be adjusted smoothly. It is in.

[0008] A third object of the present invention is to reduce the rotation of the lower pulley due to the twisting of the governor rope when lifting the machine room step by step, thereby making it possible to smoothly transfer the machine room. To provide an elevator.

[0009]

In order to achieve the above object, the present invention provides a machine room temporarily installed in a hoistway, a hoisting device installed in the machine room and driving a hoisting rope, A car and a counterweight which are lifted by the hoisting rope and move up and down the hoistway, are wound around an upper pulley installed in the machine room, and a lower pulley installed at the lower part of the hoistway, and lift the car A governor rope interlocking with the operation, when the machine room is relocated step by step according to the progress of building construction work, the governor rope
Governor ropes for construction elevators that are sequentially extended
In the feeding method , the length of the governor rope is set to a predetermined length required when the building is completed, and one end of the governor rope is fixed to the car, and the other end of the governor rope is provided on the car. Rope reel
Take it up so that it can be fed out to the device, and transfer the machine room
Sometimes a pair of governors with a length greater than this relocation distance
After lowering the lower pulley by guiding
From the rope reel device on the other end of the governor rope,
Pull out the rope to lower the lower pulley
Were are the configuration.

According to the first aspect of the present invention, the intermediate portion of the governor rope is wound around the upper pulley and the lower pulley to form a loop portion, and the other end of the governor rope is connected to the car. Since it is movably attached, the state of the other end of the governor rope is released if necessary, and then the other end is extended to extend the length of the loop portion. This eliminates the need to replace governor ropes when the machine room is relocated in stages according to the progress of building construction.

Also , at first , a part of the governor rope is wound on a rope reel device, and the governor rope is fed out from the rope reel device as needed.
It is easy to handle the governor rope when lifting the machine room step by step, and the above-described operation of adjusting the length of the loop portion can be performed smoothly.

Further, when the lower pulley is pulled up via the governor rope as the machine room is lifted, even if a twisting force is applied to the governor rope, the lower pulley is guided by the pair of guide ropes. The rotation of the pulley can be suppressed. Thus, the governor rope does not need to be twisted, so that the transfer operation of the machine room can be performed smoothly.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a construction elevator according to the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view showing a main part configuration of a construction elevator according to an embodiment of the present invention, FIG. 2 is a front view of a guide member provided in the construction elevator of the embodiment, and FIG. 3 is a side view of the guide member. FIG. 4 is a longitudinal sectional view showing the entire configuration of the construction elevator according to the present embodiment.

As shown in FIG. 4, a construction elevator generally includes a machine room 2 temporarily provided in a hoistway 1, a hoisting device 4 installed in the machine room 2 and driving a hoisting rope 3, and
The car 5 includes a car 5 and a counterweight 6 that are lifted by the hoisting rope 3 and move up and down the hoistway 1, and a governor device 8 having a governor rope 7 that works in conjunction with the elevating operation of the car 5. The machine room 2 is supported via a lifting rope 2a, and the elevator room of the car 5 is sequentially extended by gradually relocating the machine room 2 in accordance with the progress of the construction work of the building 9. ing.

One end of the hoisting rope 3 is fixed to the bottom of the machine room 2 via a support 10, and an intermediate portion is a pulley 11 above the counterweight 6, a pulley 12 of the machine room 2 and a hoisting device 4. And the pulley 13 above the car 5, and the other end is wound around a hoisting rope reel 14 in the machine room 2. The governor rope 7 is wound around an upper pulley 15 whose middle part is installed in the machine room 2 and a lower pulley 16 installed below the hoistway 1.
As shown in FIG. 1, the lower pulley 16 is mounted via a bracket 18 on a guide rail 17 erected below the hoistway 1.

In the construction elevator according to this embodiment, the length of the governor rope 7 is set to a predetermined length required when the building 9 is completed. The main difference is that a guide member 19 for guiding the lower pulley 16 is provided, and that a rope reel device 20 is provided on the upper part of the car 5, and other configurations are basically the same.

As shown in FIG. 1, one end of the governor rope 7 is fixed to the car 5 via a rope end supporting portion 21, and an intermediate portion of the governor rope 7 is wound around an upper pulley 15 and a lower pulley 16. , These upper pulleys 1
A loop portion 7a is formed between the lower pulley 5 and the lower pulley 16. Further, the other end of the governor rope 7 is movably attached to the car 5 via a rope end support portion 21.
The other end portion 7b is wound by the rope reel device 20.

As shown in FIG. 2, the guide member 19 includes a pair of guide ropes 22 extending in a vertical direction so as to be substantially parallel to the loop portion 7a of the governor rope 7, and a pair of the guide ropes 22. Each end is composed of brackets 24a and 24b fixed via bolts 23. These brackets 24a, 24b are mounted on guide rails 17 erected below the hoistway 1, and are provided at intervals slightly larger than the transfer distance L per machine room 2 per operation. Further, the lower pulley 16 is provided with an engaging portion that engages with the pair of guide ropes 22, for example, a shackle 25.

In this embodiment, after the state where the lower pulley 16 is attached to the guide rail 17 is released,
By lifting the machine room 2 for a predetermined distance L, the lower pulley 16 is pulled up vertically along the pair of guide ropes 22 via the loop portion 7a of the governor rope 7. Next, the hoisting rope 3 is fed out from the hoisting rope reel 14 in accordance with the predetermined distance L, and two U clips 26 for attaching the other end portion 7b of the governor rope 7 to the rope end supporting portion 21 are respectively attached. After loosening, the portion 7b on the other end side of the governor rope 7 is extended from the rope reel device 20 to increase the length of the loop portion 7a, and the two U clips 26
Respectively, the portion 7b on the other end side of the governor rope 7 is attached to the rope end support portion 21 again. By repeating the above procedure over the entire length of the hoistway 1, the machine room 2 is relocated stepwise, and the hoisting stroke of the car 5 is sequentially extended.

In the embodiment configured as described above, the building 9
When the machine room 2 is relocated stepwise according to the progress of the construction work, the length of the loop portion 7a of the governor rope 7 can be adjusted, so that the governor rope 7 does not need to be replaced.

In the present embodiment, the portion 7b at the other end of the governor rope 7 is first wound around the rope reel device 20, and the portion 7b is unwound from the rope reel device 20 as needed. Therefore, the governor rope 7 can be easily handled at that time, and the operation of adjusting the length of the loop portion 7a can be performed smoothly.

Further, in the present embodiment, when the lower pulley 16 is pulled up via the governor rope 7 as the machine room 2 is lifted, even if a twisting force is applied to the governor rope 7, a pair of guide ropes 22 are used. Lower pulley 16
, The rotation of the lower pulley 16 can be suppressed. Further, the guide rope 2 of the guide member 19
2 is slightly longer than the predetermined distance L per one time of lifting the machine room 2, so once the guide member 19 is installed, the transfer operation of the machine room 2 is repeated without moving the guide member 19. Can be done.

[0023]

According to the present invention having the above-described structure ,
It is, without requiring the replacement of the governor rope, can be transferred in stages the machine room in accordance with the progress process of building construction work,
Therefore, there is an effect that the operation of extending the car up-and-down stroke can be performed efficiently compared to the conventional case that requires replacement of the governor rope.

Further, the governor rope can be easily handled when the machine room is relocated step by step, and the operation of adjusting the length of the governor rope can be performed smoothly. Therefore, even a relatively long governor rope can be easily handled, so that there is an effect that a construction elevator applicable to a high-rise building can be obtained.

In addition , since the rotation of the lower pulley due to the twisting of the governor rope during the lifting of the machine room can be suppressed, the transfer of the machine room can be performed smoothly, so that the car ascending and descending stroke is extended from this point. There is an effect that work can be performed efficiently.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a main configuration of a construction elevator according to an embodiment of the present invention.

FIG. 2 is a front view of a guide member provided in the construction elevator according to the embodiment.

FIG. 3 is a side view of a guide member.

FIG. 4 is a longitudinal sectional view showing the entire configuration of the construction elevator according to the embodiment.

[Explanation of symbols]

 Reference Signs List 1 hoistway 2 machine room 3 hoisting rope 4 hoisting device 5 car 6 counterweight 7 governor rope 7a loop portion 7b other end portion 9 building 15 upper pulley 16 lower pulley 19 guide member 20 rope reel device 22 guide rope 24a, 24b Bracket 25 Shackle (engagement part)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-49-42039 (JP, A) JP-A-9-86827 (JP, A) JP-A-3-36182 (JP, A) Japanese Utility Model Showa 51- 91476 (JP, U) Japanese Utility Model Showa 58-41782 (JP, U) Japanese Utility Model Application Hei 2-66578 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B66B 1/00-31 / 02

Claims (1)

(57) [Claims] 1. A machine room temporarily installed in a hoistway, a hoisting device installed in the machine room and driving a hoisting rope, a car lifted up and down the hoistway by the hoisting rope, and A balance weight, an upper pulley installed in the machine room, and a governor rope wound around a lower pulley installed below the hoistway and interlocking with the elevator operation of the car, and a building construction process in progress When moving the machine room step by step according to
Governor ropes for construction elevators that are sequentially extended
In the feeding method , the length of the governor rope is set to a predetermined length required when the building is completed, and one end of the governor rope is fixed to the car, and the other end of the governor rope is provided on the car. Rollable reel reel device
When moving the machine room, remove it
Guided by a pair of governor ropes with upper length
After raising the lower pulley, the other end of the governor rope
The governor rope from the rope reel device on the side
A method of feeding a governor rope of a construction elevator, wherein a lower pulley is lowered .