Hydraulic elevator buffer

Abstract

The invention relates to a hydraulic elevator buffer, comprising: a base; a cylinder body, the end surface of which is sealedly connected with the base; a cylinder cover, which is covered on the upper end surface of the cylinder body; a plunger, which is penetrated through the cylinder In the cover, there is a connecting sleeve at the lower end of the plunger, and the connecting sleeve is slidingly matched with the inner wall of the cylinder; wherein, at least one tapered groove is opened on the inner wall of the cylinder, and the tapered groove Along the direction of the cylinder body, the cone is wide at the top and narrow at the bottom. The invention simplifies the structure of the elevator buffer, while ensuring the buffer performance, the plunger can be made thinner, the weight of the elevator buffer is reduced, the consumption of consumables is reduced, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of elevators, in particular to a hydraulic elevator buffer. Background technique [0002] Elevator buffer is a relatively common safety device for elevators. When the elevator car or counterweight exceeds the bottom floor due to a fault or abnormality and reaches the bottom of the hoistway, the elevator buffer can reduce the impact and make the elevator smoother or safer. stop. [0003] The application date is September 5, 2014, the application number is 201420512429.4, and the name of the invention is "Elevator Buffer". The following technical solutions are disclosed: such as image 3 As shown, a guide column 19, a floating ring 16, a connecting sleeve 17 and a plunger are coaxially arranged in the cylinder, wherein the floating ring 16 is in the shape of a boss, and the floating ring 16 is sleeved on the guide column 19 and can be left and right. For floating, a connecting sleeve 17 is provided on the out...

AI Technical Summary

Problems solved by technology

This invention reduces the diameter of the plunger, reduces its own weight, reduces the use of consumables, and reduces production costs. However, the structure of the buffer is complicated, the number of parts is large, and the processing is difficult, which cannot further reduce production costs.

[0004] It can be seen that the current buffer is mainly composed of a cylinder, a guide column, a floating ring and a plunger, but the existing plunger has a complex structure, not only consumes too much material for the plunger, but also has too much weight, so how to ensure the shock absorber Reducing the production cost while buffering the effect is a technical problem that needs to be solved at present

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