Elevator speed governor

Abstract

Provided is an elevator speed governor of simple construction that is easy to assemble and adjust and that has a high degree of freedom with respect to the arrangement of the fly weight, over-speed switch, and rope catch mechanism and setting of the fly weight mass, wherein arrangement of the fly weight, etc. and fly weight mass, etc. can be specifically determined for each of a first and a second over-speed detection speed, and which allow precise detection of each of said first and second over-speed detection speeds. Thus, the speed governor, which detects that the speed of travel of a passenger car has reached the first and second over-speed detection speeds in order to stop the passenger car, is equipped with a first over-speed detection mechanism that detects that the passenger car has reached the first over-speed detection speed and a second over-speed detection mechanism that is provided separately from the first over-speed detection mechanism and detects that the passenger carhas reached the second over-speed detection speed, and the first over-speed detection mechanism and the second over-speed detection mechanism are constituted to operate independently from one another.

Description

technical field [0001] The invention relates to a speed governor for an elevator. Background technique [0002] In the existing elevator speed limiter, such as Figure 6 Shown is a known speed governor for an elevator, which includes: a sheave 8, which is supported by a sheave shaft 8a so as to be able to rotate freely; a speed governor rope 10, which is looped is hung between the sheave 8 and the tensioning wheel in a shape, and circulates synchronously with the elevator car. The tensioning wheel can be freely rotatably arranged at the lower part of the hoistway; a pair of flying pendulums 14, the A pair of flying pendulums 14 can be freely rotatably arranged on the sides of the sheave 8; a connecting rod 25, which connects the pair of flying pendulums 14; a balance spring 15, the balance spring 15 follows the The rotation of the sheave 8 exerts force on the flying pendulum 14 in the direction opposite to the centrifugal force acting on the flying pendulum 14; the overspee...

AI Technical Summary

Problems solved by technology

[0007] Therefore, when the speed governor is assembled and adjusted, the displacement of the flying pendulum related to the operation of the overspeed switch and the rope gripping mechanism, the respective spring forces of the first balance spring and the second balance spring, and the force passing through the second balance spring Elements such as the distance between the baffle plate and the stopper plate on the rod are related to each other, and there are many adjustment parts, so there is a problem that the assembly and adjustment work is complicated, difficult, and time-consuming, and the structure of the overspeed governor becomes complicated. topic

[0008] In addition, in Image 6 In any one of the existing speed governors for elevators shown in Patent Document 1, since it is configured to detect the first overspeed detection speed and the second Because of the two different overspeed detection speeds, the following issues exist: the amount of displacement of the flying pendulum related to the operation of the overspeed switch and the rope gripping mechanism, the arrangement of the flying pendulum, the overspeed switch, and the rope gripping mechanism, and low degrees of freedom related to the setting quality of the flying pendulum; the configuration of the flying pendulum, the overspeed switch and the rope gripping mechanism, and the quality of the flying pendulum cannot be determined specifically for each of the first overspeed detection speed and the second overspeed detection speed , and the specifications of the balance spring

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