JPS61277580A - Balance rope stretcher for elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an elevator balancing rope tensioning device used to relieve an unbalanced load on a main rope in an elevator.

[Conventional technology]

Figures 4 and 5 are a side view and a plan view showing a conventional elevator balancing rope tensioning device.
1 is the car floor of the car that moves up and down in the hoistway, 2 is the emergency stop frame provided on the underside of the car floor 1, 3 is the buffer stand provided in the pit part of the hoistway, 4 is the car side buffer #, 5 6 is a guide pulley, 7 is a frame for connecting two guide pulleys 6, 8 is a guide shoe attached to the side of the frame, 9a and 9b are rails for guiding the guide pulley 6. be. 10 is a car side rail, 11 is a weight side rail, 12 is the outer shape of the car floor 1, and 13 is the outer shape of the counterweight.

Next, the operation will be explained. In order to correct the unbalanced load on the main rope of the elevator, one end of the balancing rope 5 is attached to the lower end of the car floor 1. Further, the other end of the balancing rope 5 is given tension by a wire connected to the lower part of the balancing weight 13 via a guide pulley 6. Here, the guide pulleys 6 and 8 attached to both sides of the frame 7 engage with the guide rails 9a and 9b and slide in the vertical direction. 6 is restrained from moving in the horizontal direction. In an elevator where the counterweight 13 is located next to the car floor 12 in this way, in order to avoid interference between the guide rail 9a and the car shock absorber 4,
A distance #L from the center of the car side rail 10 to the center of the counterweight is determined.

[Problem that the invention seeks to solve]

The conventional elevator balancing rope tensioning device is constructed as described above. In order to avoid interference between the guide rail and the car buffer, the distance li from the center of the car rail to the center of the counterweight must be set! I had to take a lot of IL. If the L dimension is increased, the moment acting on the car increases, and accordingly, a large load is applied to guide rollers (not shown) of the car, which adversely affects the riding comfort of the elevator. In addition, if the L dimension is large (if the counterweight is installed, the rear end of the car floor must be increased in size to secure a large space), which is a problem.

This invention was made to solve the above problems, and it is possible to avoid interference between the guide pulley guide rail and the car shock absorber without increasing the distance between the guide pulley and the car guide rail. The purpose of this invention is to obtain a balancing rope tensioning device for an elevator.

[Means for solving problems]

The rope tensioning device according to the present invention has a rail for guiding the guide pulley provided only on one side of the guide pulley.

[For production]

The elevator balancing rope tensioning device according to the present invention uses a rail provided only on one side of the guide pulley.
By allowing the guide pulley to slide only in the vertical direction while restricting horizontal movement, interference between the guide rail and other equipment can be prevented.

〔Example〕

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

In FIGS. 1 and 2, guide shoes 14a and 14b are attached to the side of the frame 7 on the side that does not interfere with the car-side buffer JIij4. Two guide rails 15a, 15b are arranged so as to fit into guide shoes 14a, 14b, and the difference from FIGS. 4 and 5 is that these guide shoes 14a, 14b
The arrangement is provided on the side that does not interfere with the car-side shock absorber 4.

In the balancing rope tensioning device of this embodiment, the guide pulley guide rails 15a and 15b are not arranged on the side where they interfere with the car side shock absorber 4, but two guide rails 15a are placed on the side opposite to the car side shock absorber 4. , 15b are installed. Guide rail 15
The guide shoes 14a and 14b serve to restrain the horizontal movement of the guide pulley 6 during an earthquake, and to guide the movement in the vertical direction so as to cope with the elongation of the balancing rope 5 during normal times. Guide Lz-115a
, 15b, the rails are arranged opposite to each other so as not to come off from each other. In addition, by installing the guide rails i5a and 15b on one side of the frame 8, there is no need to consider interference with the car S cylindrical type 4. fiL can be reduced.As a result, the moment acting on the car can be reduced, and the load applied to the guide rollers (not shown) of the car can also be reduced, improving factors that adversely affect the ride comfort of the elevator. Furthermore, by reducing the L dimension, it becomes unnecessary to secure a large dimension at the rear end of the car floor as a space for installing the counterweight 13.

FIG. 5 shows another embodiment of the present invention.
The same reference numerals as in FIG. 1 and FIG. 2 indicate the same parts.

Reference numeral 16 indicates a guide pulley guide rail, and reference numeral 17 indicates a guide shoe. In Figures 1 and 2, two elevator rails are used as the guide pulley guide rails, but H-section steel or the like is used as the guide pulley guide rail 16, and the flange portion is used as the rail. Guide rail 15 shown in Figure 2
a, 15 b The uke has the role of two pieces, and the same effect can be obtained in this case as well.

[Effects of the Invention] As described above, according to the present invention, the guide pulley guide rail is installed only on one side of the guide pulley frame, and
Two guide rails are placed facing each other, and the guide shoes attached to the guide pulley frame fit into the guide rails, thereby restricting the horizontal movement of the guide pulley and allowing vertical movement. . For this reason, by having the guide rail on only one side, interference between the guide rail and other equipment at the bit part can be avoided.
It has become possible to reduce the distance between the guide pulley and the car rail core, and this has made it possible to reduce the moment exerted on the car by the weight of the balancing rope and the weight of the guide pulley. There are various effects such as being able to improve factors that adversely affect the ride comfort of an elevator.

[Brief explanation of drawings]

FIG. 1 is a side view showing an elevator balancing rope tensioning device according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a side view showing an elevator balancing rope tensioning device according to another embodiment of the invention. FIG. 4 is a side view of a conventional elevator balancing rope tensioning device, and FIG. 5 is a plan view of FIG. 1. 1 Car floor, 2 Emergency stop frame, 3 Buffer stand, 4 Car side buffer, 5 Balancing rope, 6 Guide pulley, 7 Frame, 9 a, 9 b Guide rail , 10. Car side rail, 11.. Weight side rail, 12.. Car body outer shape, 13.. Counterweight outer shape, 14a. 14b-Guide shoe, 15a, 15b-Guide rail, 16-Guide rail, 17... Guide shoe. Note that the same reference numerals in the figures indicate the same or corresponding parts. Agent Masuo Oiwa (2 others) is Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] In an elevator counterrope tensioning device for alleviating the unbalanced load of the main rope on a hoisting machine depending on the position of the car of a rope elevator in which a car and a counterweight are connected by a main rope, a guide pulley is used. A balancing rope tensioning device for an elevator, characterized in that a guiding rail is provided only on one side of a guide pulley.