20-ton super large-tonnage freight elevator

Abstract

The invention discloses a 20-ton super-large-tonnage cargo elevator, which comprises a car (1). A car frame is arranged on the outside of the car (1). The group car reversing sheave group comprises two car reversing sheaves (2) arranged side by side, and the outside of the car reversing sheave (2) is provided with a traction wire rope (3), and the traction wire rope (3) passes through the two A set of reversing sheaves is connected in turn with a traction machine (4) and a counterweight device (5). The counterweight device (5) is provided with four counterweight reversing sheaves that cooperate with the traction wire rope (3). (6), the suspension ratio of the elevator is 8:1. According to the overall weight and size of the freight elevator when it is fully loaded, the present invention coordinates and optimizes the number and distribution position of the traction sheaves, the car frame structure, the instantaneous safety gear structure, the elevator guide shoe structure and the guide rail support structure, so that the present invention can The weight of the whole elevator is reduced to less than 20 tons, and it has the characteristics of high loading stability, good safety and low production cost.

Description

Technical field [0001] The present invention relates to a cargo elevator, in particular a 20-ton super tonnage cargo elevator. Background [0002] With the development of science and technology and the improvement of manufacturers' demand, the load capacity required for cargo elevators is also getting higher and higher, but most of the cargo elevators on the market are within 5 tons, and the 20 tons of load-bearing elevators are difficult to achieve mass production due to design difficulties and manufacturing difficulties. At present, only a small number of 20 tons of cargo elevators are only made on the basis of the existing 5 tons and 10 tons of cargo elevators by increasing the thickness of the plate or increasing the size of the material, so that the overall deformation resistance of the elevator is 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 elevator can not be guaranteed, and ...

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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