20-ton super-tonnage freight elevator

Abstract

The invention discloses a 20-ton super-tonnage freight elevator which comprises a car (1), and a car frame is arranged at the exterior of the car (1); two car diversion sheave sets are arranged on thetwo sides of the car frame, and each car diversion sheave set comprises two car diversion sheaves (2) arranged side by side; traction steel wire ropes (3) are arranged at the exteriors of the car diversion sheaves (2); the traction steel wire ropes (3) penetrate through the two diversion sheave sets, and are sequentially connected with a traction machine (4) and a counterweight device (5), and four counterweight diversion sheaves (6) matched with the traction steel wire ropes (3) are arranged on the counterweight device (5); and the suspension ratio of the elevator is 8: 1. According to the overall weight and size of the freight elevator during full load, the number and distribution positions of traction wheels, the car frame structure, an instantaneous safety clamp structure, an elevatorguide shoe structure and a guide rail bracket structure are optimized cooperatively, and thus the weight of the whole elevator can be reduced to 20 tons or below; The freight elevator has the characteristics of high carrying stability and safety and low production cost.

Description

Technical field[0001]The invention relates to a freight elevator, in particular to a 20-ton super large tonnage freight elevator.Background technique[0002]With the development of science and technology and the increasing demand of manufacturers, the required load capacity of freight elevators is getting higher and higher. However, most of the freight elevators on the market are within 5 tons, and the freight elevators with 20 tons load specifications are difficult to design. , Manufacturing difficulties and other issues, it is currently difficult to achieve mass production. At present, the only few 20-ton freight elevators are only made by increasing the thickness of the sheet or increasing the specifications on the basis of the existing 5-ton and 10-ton freight elevators, which makes the overall anti-deformation ability of the elevator stronger. , So as to achieve the effect of increasing the load capacity. However, this method will not only make the stability and safety of the ele...

AI Technical Summary

Problems solved by technology

However, this method will not only make the stability and safety of the elevator unable to be guaranteed, but also increase the overall weight of the elevator due to the increase in profile specifications, so that the overall weight of the car of the existing 20-ton freight elevator will reach about 25 tons. , which further increases the design difficulty of the elevator and reduces the carrying stability of the elevator, and its production cost will also increase accordingly; and how to reduce the weight of the elevator while ensuring the carrying stability of the elevator has become a problem to be solved for a 20-ton freight elevator question

[0003] In addition, an increase in the load capacity of a freight elevator means an increase in the size of the elevator, and the car area of ​​a 20-ton freight elevator needs to reach 33m 2 , to accommodate the length, width and volume of the heavy truck; correspondingly, the increase in the size of the elevator will increase the length of the profiles such as guide rail brackets and car frames, and the increase in the length of the profiles will cause a decrease in the resistance to deformation, making the profiles in The position away from the connection point will be more prone to bending deformation, which will reduce the stability and safety of the elevator

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