JP3408938B2 - Elevator for construction - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction site of a high-rise building or the like, in which a machine room in a hoistway is moved upward in accordance with the progress of the construction. The present invention relates to a construction elevator for sequentially extending a car elevator stroke. 2. Description of the Related Art Generally, in a construction site of a high-rise building,
While the elevator is incomplete, it takes a lot of time and effort to transport construction materials to the upper floors and raise and lower construction workers, which hinders the efficiency of construction work. Was. Therefore, conventionally, Japanese Patent Application Laid-Open No. 8-133635
As disclosed in the official gazette, in accordance with the progress of the construction work of the building, the temporary machine room in the hoistway is lifted and moved upward, and the elevator ascent / descent process is sequentially extended. An elevator for construction has been proposed. In such a conventional construction elevator,
The machine room temporarily installed in the hoistway is detected via a hoisting device for driving a hoisting rope (main rope) connecting the car and the counterweight, and a governor rope wound around a pulley. A governor machine or the like for stopping the car when the ascent / descent speed of the car exceeds an allowable value is mounted. Further, at the bottom of the machine room, a support whose length dimension between both ends can be changed is provided, and when the machine room is temporarily installed, it is arranged on the opposed hoistway wall. The support is extended so as to be longer than the interval between the pair of building beams, and the machine room is stably supported by placing both ends of the support on the building beams. [0004] However, in the above-mentioned conventional construction elevator, there is a problem that the governor rope must be replaced every time the machine room is relocated. This was a factor that worsened the work efficiency when relocating. That is, when the machine room is to be moved upward, the pulley (upper pulley) of the governor machine in the machine room and the lower pulley installed at the bottom of the hoistway are stretched between the two pulleys. Since the governor rope is too short in its previous length, in the conventional technology, the existing governor rope is first removed, and then a new governor rope that is longer than the prescribed length is wound around both pulleys and stretched. The work had to be done and a lot of time and effort was spent on this replacement. The present invention has been made to solve such problems of the prior art, and an object of the present invention is to eliminate the necessity of replacing a governor rope when a machine room is relocated, thereby making it possible to efficiently perform a relocation operation. Is to provide. SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a machine room equipped with a hoisting device for driving a hoisting rope for connecting a car and a counterweight. Is temporarily installed in the hoistway so that the car can be operated below the machine room, and tension is applied between an upper pulley installed in the machine room and a lower pulley installed at the bottom of the hoistway. It is possible to detect abnormalities in the elevation speed of the car through a governor rope that is provided and both ends are engaged with the car, and lifts the machine room in accordance with the progress of building construction of the building Construction elevators to be relocated
Although it is necessary at the time of completion of the elevator, for the time being, a reel device that winds and holds an extra margin of the governor rope is mounted on the car, and one end of the governor rope stretched between the pulleys is configured to be continuous. And both
The first that locks one end of the governor rope stretched between
And a second locking portion for locking the other end and the other end.
To make one of the locking parts pivotable with respect to the other
Rope end connecting device is provided integrally with the car.
I have done it . In the construction elevator having such a configuration, when the machine room is to be relocated upward, the governor rope is sent out from the reel device by an insufficient length due to the movement of the machine room. Since the length of the governor rope stretched between the pulley and the pulley can be increased by a required amount, a complicated governor rope exchange operation is not required. [0008] In this configuration, a first locking portion for locking one end of the governor rope stretched between the pulleys and a second locking portion for locking the other end are provided. If a rope end connecting device that makes one locking portion rotatable with respect to the other locking portion is provided integrally with the ride, the governor rope sent from the reel device is twisted at the time of stretching. This is also preferable because the first locking portion or the second locking portion rotates and the twist is quickly eliminated. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a construction elevator according to the present invention will be described below with reference to FIGS. Here, FIG. 1 is an explanatory view showing an attached state of the governor rope according to the present embodiment, FIG. 2 is a detailed front view of the rope end connector shown in FIG. 1, and FIG. 3 is a detailed side view of the rope end connector. FIG. 4 is a schematic diagram showing the overall configuration of the present embodiment. First, an outline of a construction elevator to which the present invention is applied will be described mainly with reference to FIG. As shown in the figure, a support 12 is provided at the bottom of the machine room 2 carried into the hoistway 1, and both ends of the support 12 are arranged on opposing hoistway walls. The machine room 2 is stably supported at a predetermined position in the hoistway 1 by being placed on a pair of building beams (not shown). The machine room 2 includes a hoisting machine 3 for driving a main rope 9 connecting the car 10 and the counterweight 11 and a governor machine for stopping the car 10 by detecting an abnormality in the elevating speed. 4 and a main rope reel 14 or the like, which is necessary for completion of the elevator but is wound and held with an extra margin of the main rope 9 for the time being. In other words, the main ropes 9 other than the spare room are taken out from the main rope reel 14 and then the car 10
The main rope 9 is driven by rotating the hoisting machine 3 forward and reverse since the upper pulley 16, the hoisting machine 3, and the pulley 17 on the counterweight 11 are sequentially wound around and fixed to the machine room 2. By doing so, the car 10 can be moved up and down below the machine room 2. As shown in FIG. 1, a governor rope 6 wound around an upper pulley 7 provided on the governor machine 4 and a lower pulley 8 provided on the bottom of the hoistway 1 has a rope end connector 15 as shown in FIG. Are stretched between the pulleys 7 and 8 in a state where the both end portions 6a and 6b are connected via the pulley.
This rope end connector 15 is disposed on the side of the car 10 and, as shown in FIGS. 2 and 3, a first locking portion 15a for locking one end 6a of the governor rope 6, and a governor rope. 6 is provided with a second locking portion 15b which locks the other end 6b and is rotatable with respect to the first locking portion 15a. A governor rope reel 5 is mounted on the upper part of the car 10. The governor rope reel 5, which is necessary when the elevator is completed, has an extra margin for the governor rope 6 wound and held for the time being. I have. The leading end 6c of the governor rope 6 held by the governor rope reel 5 and the one end 6a of the governor rope 6 stretched between the pulleys 7 and 8 are continuous with each other. Immediately below the locking portion 15a,
c and 6a are bound in a temporarily fixed state by fastening the rope clip 18. Immediately above the second locking portion 15b of the rope end connector 15, the other end 6b of the governor rope 6 is bound in a fully fixed state by fastening a rope clip 19. The construction elevator generally constructed in this manner is used in accordance with the progress of the construction work of the building (building).
By moving the machine room 2 in the hoistway 1 upward, the hoisting stroke of the car 10 can be sequentially extended.
That is, the machine room 2 in a temporary state supported by the building beams
Can be moved upward by lifting it with a crane or the like via the wire 13 so that when the construction of the upper floor is started, the car 10 is moved to the floor so that the car 10 can operate to that floor. The temporary position is moved upward. At this time, the shortage of the length of the main rope 9 necessary for the movement of the machine room 2 is sent out from the main rope reel 14, and the shortage of the governor rope 6 is sent out from the governor rope reel 5. There is no need to replace the main rope 9 and governor rope 6 when the chamber 2 is relocated. That is, in the prior art, a countermeasure has been taken for the main rope 9 in which the shortage generated when the machine room 2 is relocated is sent out from the main rope reel 14 in the machine room 2. In the embodiment, the exchange work is not required for the governor rope 6, so that the car 1
A governor rope reel 5 is mounted on the top of the machine room 2 so that a required amount of governor rope 6 can be sent from the governor rope reel 5 when the machine room 2 is relocated. Specifically, when the machine room 2 is to be moved upward, the governor rope 6 stretched between the upper pulley 7 and the lower pulley 8 is used.
First, the governor rope 6 is pulled out of the governor rope reel 5 by this shortage, the rope clip 18 is loosened, and then the governor rope is extended by this length. 6 is moved to the lower pulley 8 side, and then the rope clip 18 is tightened again, so that the governor rope 6 having a predetermined length is maintained between the two pulleys 7 and 8 even after the transfer of the machine room 2. Governor rope 6 that can be stretched
Replacement work becomes unnecessary. As a result, the work time and labor required for relocating the machine room 2 can be reduced, and the work efficiency is greatly improved. Further, in this embodiment, both ends 6a and 6b of the governor rope 6 stretched between the pulleys 7 and 8 are locked and connected to each other to be integrated with the side of the car 10 as a rope end. A connector 15 is used in which a second locking portion 15b for locking the other end 6b is rotatable with respect to a first locking portion 15a for locking the one end 6a of the governor rope 6. Therefore, even if the governor rope 6 sent out from the governor rope reel 5 is twisted at the time of stretching, the second locking portion 15b is rotated and the twist is quickly eliminated. [0015] The construction elevator according to the present invention is embodied in the form described above, and has the following effects. A reel device which is necessary for the completion of the elevator but is wound around an extra margin of the governor rope for the time being is provided. When the machine room is moved upward, the reel device is insufficient due to the movement of the machine room. If the governor rope is sent out from the reel device by a length corresponding to the length of the governor rope, the length of the governor rope stretched between the upper pulley and the lower pulley can be increased by a required amount, so that complicated governor rope replacement work is performed. Is unnecessary, and the transfer operation of the machine room can be performed efficiently. [0017] Further, a first locking portion for locking one end of the governor rope stretched between the pulleys and a second locking portion for locking the other end are provided. If a rope end connecting device is used in which the stopping portion is rotatable with respect to the other locking portion,
Even if the governor rope sent from the reel device is twisted at the time of stretching, the first locking portion or the second locking portion is rotated, and the twist can be quickly eliminated.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram showing an attached state of a governor rope according to the present embodiment. FIG. 2 is a detailed front view of the rope end connector shown in FIG. 1; FIG. 3 is a detailed side view of the rope end connector. FIG. 4 is a schematic diagram showing the overall configuration of the present embodiment. [Description of Signs] 1 hoistway 2 machine room 3 hoisting machine 4 governor machine 5 governor rope reel 6 governor rope 7 upper pulley 8 lower pulley 9 main rope (hoisting rope) 10 car 11 counterweight 13 wire 14 main rope reel 15 Rope end connector 15a First locking portion 15b Second locking portion 18, 19 Rope clip

──────────────────────────────────────────────────続 き Continuing from the front page (72) Eigo Arai, Inventor 832-2 Horiguchi, Hitachinaka-city, Ibaraki Pref. Hitachi Systems Plaza Katsuta Hitachi Mito Engineering Co., Ltd. (56) References JP-A-49-42039 (JP, A (58) Field surveyed (Int. Cl. ⁷ , DB name) B66B 7/00 B66B 9/187

Claims (1)

(57) [Claims 1] A machine room in which a hoisting device for driving a hoisting rope for connecting a rider and a counterweight is mounted is temporarily installed in a hoistway. The car is operable below the machine room, and is stretched between an upper pulley installed in the machine room and a lower pulley installed at the bottom of the hoistway so that both ends are connected to the car. An elevator for construction, in which an abnormality in the elevation speed of the car can be detected via the engaged governor rope, and the machine room is lifted and relocated in accordance with the progress of building construction of the building. Although sometimes necessary, for the time being, a reel device for winding and holding an extra margin of the governor rope is mounted on the car, and the reel device is stretched between the tip of the governor rope held by the reel device and the pulley. Governor And one end of the loop
The first that locks one end of the governor rope stretched between
And a second locking portion for locking the other end and the other end.
To make one of the locking parts pivotable with respect to the other
A construction elevator , wherein a rope end connecting device is provided integrally with the car .