SU851154A1 - Method of static testing of elevator with counterweight - Google Patents

Description

one

The invention relates to lifting machines and can be used when testing elevators with a counterweight.

A known method of static testing of an elevator with a counterweight is that an external torque loads the output drive shaft and checks the strength of the main elevator assemblies.

However, the known method of exploitation is time consuming because of the need to manually transport cargo to and from the elevator and, in addition, the accumulation of a significant mass of cargo in the warehouse is difficult.

The purpose of the invention is to reduce labor costs.

The goal is achieved by checking the traction rope relative to the traction sheave before checking and introducing catchers to fully interact with the axles, which release the brake and, lifting the counterweight, loosen the branches of the traction rope from the cab side, then re-engage the brake and loosen The rope branch of the speed limiter is located at the catcher lever lever.

The drawing shows a device for implementing the method.

The harness; the cab contains cab 1 from the OI 2 pilot connected to the cable 3, the 4-speed limiter lever 5 activates the catchers 2, and the counterweight 6. The counterweight 6 is connected to the cabin 1 by means of the traction cables 7 enveloping the cable-leading body, for example a pulley 8 The winch 9 has a brake 10 and a steering wheel 11. T bend ropes 7 interact with a rope-guiding body with a clamp 12 i,

When testing traction ropes 7

15 is fixed on the guide-assistance organ 8 using clamps 12. Cabin 1 is put on catchers 2, then tszhm4oz 10 is released and, turning the steering wheel 11, raise the counterweight 6, weakened by this

2Y branch of the traction rope 1 from the side of the cabish: 1.

After this, brake 10 is turned on and inspection of the winch assemblies 9 and the TSF 10 is performed. Then the donkey & rope 3

25 limiter 4 speeds from the side of the lever 5, the inclusion of catchers 2 and the like. The function of the wedges of catchers, etc., as in the operated elevator, the self-engagement of the wedges is

30 guaranteeing the reliability of the first hold by the catchers. The external moment with this method of testing the elevator, equal to the product of the weight of the counterweight by the radius of the trainee organ, is equal to 1.5 times the external moment with the known method, tests.

The proposed method provides a significant reduction in labor costs when testing the elevator without reducing the magnitude of the test moment, and the economic effect of introducing a new method will be about 1 million rubles. in year.

Claims (1)

 Invention Formula A static test method of a lift with a counterweight consisting in that the external moment loads the output shaft of the drive and checks the strength of the main components of the elevator, in order to reduce labor costs, before checking, fix the haul cable relative to the cable-driving pulley and introduce catchers in cooperation with the direction of the CEDIM, after which release the brake and, lifting the counterweight, loosen the branches of the haul rope from the cabin, then re-activate the brake and weaken the cable branch of the speed limiter on the lever side of the catchers. Information sources 5 taken into account in the examination 1. Rules for the design and safe operation of elevators. M., Nedra, 1971, p. 46-50, clause 7.3.8. (prototype).