JPH04125278U - Elevator governor rope tension device - Google Patents

Abstract

(57) [Summary] (with amendments) [Purpose] Improve maintainability and improve the functionality of safety devices by using a tension device that can automatically apply the same tension in response to expansion and contraction of the governor rope due to aging and changes in humidity. The purpose is to [Structure] The band-shaped end of a plate provided with a plurality of rollers 12 that engage with both sides of a guide rail 8 and are movable up and down is connected and fixed to a rotating shaft 3 of a sheave 2 that lifts a governor rope 1.

Description

[Detailed explanation of the idea]

0001 [Purpose of invention]

0002

[Industrial application field]

This invention relates to a governor rope tension device that drives an elevator speed governor. do.

0003

[Conventional technology]

A governor rope tensioning device will be explained using a conventional example shown in FIGS. 3 and 4.

0004 The tension device for the governor rope 1 is installed at the bottom of the hoistway, and Apply tension to the governor rope 1 wrapped around the speed governor installed in the machine room on the other side. It is configured to

[0005] The shaft 3 is rotatably passed through the sheave 2 which is suspended by wrapping the governor rope 1 around it. The shaft 3 has a step and is fixed to an arm 4 formed in a band shape. Further, the other end of the arm 4 is connected to a plate 5 by a shaft 6, and the plate 5 is fixed at two corners. It is fixed with a fixed clip 7 to a guide rail 8 erected in the hoistway.

[0006] A plate 9 is attached to the shaft 3 of the sheave 2 together with an arm 4, and a weight 10 is attached to the shaft 3 of the sheave 2. The weight of the weight 10 applies tension to the governor rope 1. It's on.

[0007] As mentioned above, since tension is applied to the governor rope 1, The length of the rope increases due to the change in humidity, or the rope expands and contracts due to changes in humidity. In other words, when the humidity increases, the fibers of the core rope of the governor rope 1 absorb moisture and become thicker in diameter. , the length of the rope will shrink, and conversely, as the dryness increases, it will lengthen.

[0008]

[Problem that the idea aims to solve]

In recent years, as buildings have become taller, elevator governor ropes have inevitably become longer. The degree of rope elongation increases due to humidity, and adjustment is not possible using only the above-mentioned range of arm variation. It became impossible to apply tension to the governor rope, and the governor rope A malfunction may occur in the safety device connected to the

[0009] For this reason, each time the humidity change increases, the plate mounting position on the guide rail must be changed. It has become necessary to change the system, making maintenance work complicated.

0010 In view of the above, this invention automatically responds to expansion and contraction of the governor rope due to changes in humidity, etc. The purpose is to provide a possible tension device.

[0011] [Structure of the idea]

0012

[Means to solve the problem]

In order to achieve the above objectives, the present invention has developed a guide rail that supports and guides the elevator car. A plate that doubles as a weight is equipped with multiple rollers that engage both sides of the plate and move up and down. Attach the governor rope to the rotating shaft of the hanging sheave to hold the sheave. I will do so.

[0013]

[Effect]

With the above configuration, the plate that also serves as a weight can be used as a guide by the engaging rollers. The side of the wall can be moved up and down, and the sheave connected to the plate can be moved up and down. can move up and down in response to changes in the rope length of the governor rope, and always The same tension can be applied to the governor rope.

[0014]

【Example】

The governor rope tension device of the present invention will be explained based on the embodiment shown in FIGS. 1 and 2. I will clarify.

[0015] Governor rope 1 is suspended with sheave 2 wrapped around it, and sheave 2 can be freely rotated. Support it with shaft 3. The shaft 3 is a plate 11 that also serves as a weight and engages with the guide rail 8. Connect and fix. The plate 11 has a band-shaped end connected to the shaft 3 of the sheave 2. rollers 12 are provided at the four corners, and the rollers 12 are mounted on both sides of the guide rail 8. Engage with the surface to move up and down.

[0016] With the above configuration, the rope length of the cabana rope 1 may change due to aging or humidity changes. When expansion/contraction occurs in the roller 12 of the plate 11 due to the weight of the plate 11, rolls up and down the side of the guide rail 8, and the sheave 2 moves to the governor rope 1. A constant tension can be applied at all times.

[0017] In another embodiment of the invention, a plate 11 for tensioning the governor rope 1 is provided. If the weight is insufficient and adjustment is not possible, add weight to the plate 11. is possible.

[0018] Also, the number of rollers 12 of the plate 11 that engages with the guide rail 8 is increased by a plurality of It can also be provided.

[0019]

[Effect of the idea]

The tension device according to the present invention makes effective use of guide rails to It is possible to automatically apply tension in response to the expansion and contraction of the rope, reducing maintenance work. This will improve safety and increase the reliability of safety equipment.

[Brief explanation of drawings]

FIG. 1 is a plan view of a tension device according to the present invention;

FIG. 2 is a front view of FIG. 1.

[Fig. 3] A plan view of a conventional tension device.

FIG. 4 is a front view of FIG. 3;

[Explanation of symbols]

1 Governor rope 2 sieve 3 axes 8 Guide rail 11 plate 12 Roller

Claims (1)

[Scope of utility model registration request] 1. A governor rope tensioning device for an elevator that applies tension by pulling a sheave wrapped around a governor rope downward with a weight, characterized in that the sheave is supported by a plate that engages with a guide rail via a roller. Elevator governor rope tension device.