JPH11287299A - Balance chain for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent noises due to vibration between links by arranging a synthetic resin coating layer on the surface of a metallic chain body. SOLUTION: A metallic chain body 50 is formed by connecting a plurality of links 51, 51,... to each other, that is, connecting them in the form chain connection. A synthetic resin coating layer 52 covers the surface of the chain body 50. The coating layer 52 is not applied to the link 51 individually but applied to the whole of the chain body 50 integrally. Therefore, a vibration due to the movement of the integrated links 51 can be damped. In installation of the coating layer 52, synthetic resin liquid is jetted toward the chain body 50, or alternatively, the chain body 50 may be dipped in the synthetic resin liquid. Therefore, efficiency of manufacturing a balance chain can be improved because noise due to a vibration between the links can be prevented by means of simple processing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a balance chain for an elevator, in which one end of a metal chain body is connected to the bottom of a lifting cage and the other end is connected to the bottom of a counterweight, and is suspended in a substantially U-shape. And is used to maintain a stable vertical movement of the lifting cage.

[0002]

2. Description of the Related Art Conventionally, a balance chain of this kind is alternately provided with each link of a metal chain body.
A so-called zigzag-like cord is made to penetrate the cord or the like, and the twine or the like absorbs the vibration caused by the swing of the links, thereby preventing the generation of noise.

[0003]

However, since the length of the chain body constituting the balance chain is considerably long in consideration of the purpose of use, it is necessary to penetrate the rope through each link in a zigzag manner. Is extremely time-consuming, and as a result, there is a disadvantage that it is difficult to improve the efficiency of the manufacturing operation of the balance chain.

An object of the present invention is to eliminate such inconvenience.

[0005]

In order to achieve the above object, in an elevator balance chain according to the present invention, one end of a metal chain main body is connected to a lifting cage, and the other end is connected to a counterweight. In an elevator balance chain whose parts are suspended in a substantially U-shape, a coating layer of synthetic resin is provided on the surface of the metal chain body, so that this coating layer absorbs vibrations caused by the swing of the links. In addition, the coating layer can be provided by spraying a synthetic resin liquid onto the metal chain main body, or by dipping the metal chain main body into the synthetic resin melt.

[0006]

FIG. 1 is a diagram showing the use of an elevator balance chain according to the present invention, and FIG.
FIG. 2 is an enlarged partial sectional view of a part II.

In FIG. 1, E denotes an elevator installed on a structure 10. In the structure 10, a hoisting pulley 11 and a supporting pulley 12 are installed. The hoisting pulley 11 is driven to rotate by a hoisting machine (electric motor), and the other pulleys rotate freely.

Reference numeral 20 denotes a hoisting wire rope, which is wound around the hoisting pulley 11, the supporting pulley 12, and the upper auxiliary pulley 13. An elevating cage 30 is connected to one end of the hoisting wire rope 20, and a counterweight 40 is connected to the other end. The hoisting wire rope 20 moves up and down based on the drive of the hoisting pulley 11 to move the hoisting cage 30 up and down along the hoistway.

Reference numeral C denotes a balance chain, which is wound around the lower auxiliary pulley 14. One end of the balance chain C is connected to the bottom of the lifting cage 30 and the other end is connected to the bottom of the counterweight 40, and the intermediate portion is suspended in a substantially U-shape as shown in FIG. The balance chain C moves forward and backward based on the vertical movement of the lifting cage, and prevents the horizontal movement of the lifting cage to compensate for the stable vertical movement.

Referring to FIG. 2, the balance chain C will be described in detail. Reference numeral 50 denotes a metallic chain main body, which is formed by connecting a plurality of links 51, 51,. Reference numeral 52 denotes a synthetic resin coating layer,
Covering the surface. The coating layer 52 covers not the link 51 but the chain body 50 integrally. For this reason, the vibration caused by the swing of the pair of links 51 can be damped. When the coating layer 52 is provided, the synthetic resin liquid can be sprayed on the chain main body 50, or can be immersed in the synthetic resin liquid in the chain main body 50. In addition, any other method can be adopted. Incidentally, vinyl chloride resin is suitable as the synthetic resin.

[0011]

The elevator balance chain according to the present invention is an elevator balance in which one end of a metal chain body is connected to a lifting cage, the other end is connected to a counterweight, and an intermediate portion thereof is suspended in a substantially U-shape. In the chain, a synthetic resin coating layer is provided on the surface of the metal chain body, so that the coating layer can absorb vibrations caused by the swing of the links and combine the coating layer with the metal chain body. By spraying a resin liquid, or
It can be provided by immersing a metal chain main body in a synthetic resin solution.

Therefore, if this elevator balance chain is used, the noise due to the vibration of the links can be prevented by a simple process, so that the efficiency of the balance chain manufacturing operation can be improved.

[Brief description of the drawings]

FIG. 1 is a use state diagram of an elevator balance chain according to the present invention.

FIG. 2 is an enlarged partial sectional view of a portion II in FIG.

[Explanation of symbols]

 C: Elevator balance chain E: Elevator 20: Hoisting wire rope 30: Elevating cage 40: Counter weight 50: Metal chain body 52: Coating layer

Claims (1)

[Claims] 1. An elevator balance chain in which one end of a metal chain main body is connected to a lifting cage and the other end is connected to a counterweight, and an intermediate portion thereof is suspended in a substantially U-shape. A balance chain for elevators, characterized in that a coating layer of a synthetic resin is provided thereon.