Multi-groove oil buffer

Abstract

The invention discloses a multi-groove oil buffer. The multi-groove oil buffer comprises a shell, a cylinder block and a plunger, wherein the cylinder block and the plunger are located inside the shell, one end of the cylinder block is connected to an oil cylinder base, and the plunger is inserted into the other end of the cylinder block; buffer oil is arranged in a cylindrical cavity defined by the cylinder block and the plunger, oil grooves are formed in the end, in contact with the buffer oil, of the plunger, and the oil grooves are arranged in order by height; the cylinder block and the plunger are sleeved with a reset spring, and a limiting baffle is arranged on the middle section of the plunger. An elevator can be buffered at an approximately constant speed under the damping action of fluid, and the advantage of stable buffering is realized. Under the same condition, the stroke required by the multi-groove oil buffer is half that of a spring buffer. The multi-groove oil buffer is especially suitable for high-speed elevators.

Description

technical field [0001] The invention relates to the technical field of elevator car safety, in particular to a multi-groove oil pressure buffer. Background technique [0002] The spring buffer in the prior art converts the kinetic energy and potential energy of the car or the counterweight into the elastic deformation energy of the spring after being impacted, and the car or the counterweight decelerates due to the reaction force of the spring. When the spring is compressed to the limit position, the spring will release the elastic deformation energy during the buffering process, and the car will still rebound and rise to cause impact. Contents of the invention [0003] In order to solve the problems in the background technology, the object of the present invention is to provide a multi-groove oil pressure buffer that can make the car and the counterweight buffer smoothly and has a short buffer stroke. [0004] In order to achieve the above object, the technical solution ...

AI Technical Summary

Problems solved by technology

When the spring is compressed to the limit position, the spring will release the elastic deformation energy during the buffering process, and the car will still rebound and rise to cause impact. The higher the impact speed is, the greater the rebound speed will be, resulting in the unsteady buffer performance of the car or counterweight.

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