Gas-liquid phase double-stroke elevator buffer

Abstract

A gas-liquid phase double-stroke elevator buffer comprises a cylinder block, an inner cylinder sleeve and a cylinder column; a cylinder cover is arranged at the top of the cylinder block; a base is arranged at the bottom of the cylinder block; an inert gas leading-in port is formed in the upper side part of the cylinder block; the inner cylinder sleeve is arranged in the cylinder block and comprises an inner hydraulic oil cavity; the space between the outer wall of the inner cylinder sleeve and the inner wall of the cylinder block forms an oil storage cavity; damping holes are formed in the inner cylinder sleeve wall body at the lower part of the inner cylinder sleeve in the height direction in the circumferential direction of the inner cylinder sleeve wall body at intervals; the lower end of the cylinder column extends into the inner hydraulic oil cavity; the upper end of the cylinder column extends out of the cylinder cover; the inert gas leading-in port communicates with the oil storage cavity; an inert gas is led into the upper part of the oil storage cavity via the inert gas leading-in port; the buffer is characterized by further comprising a bidirectional solenoid valve and an inert gas supply mechanism; the part, corresponding to the lower part of the cylinder block, of the bidirectional solenoid valve is connected between the inner hydraulic oil cavity and the oil storage cavity in series; and the inert gas supply mechanism is connected with the inert gas leading-in port. The buffer can meet role transformation requirements under different working conditions of an elevator.

Description

technical field [0001] The invention belongs to the technical field of elevator safety facilities, and in particular relates to a gas-liquid phase double-stroke elevator buffer. Background technique [0002] As far as the inclined elevator is concerned, the elevator car can use a conventional buffer when the door is opened on the side of the running track, and when the front door is opened on the running track, the leveling position of the door opening and the safety protection position of the buffer are different. There is a contradiction between them, that is to say, the elevator car is in the leveling area, and it is never allowed to cross the floor to collide with the buffer. According to the specification, even if the buffer is compressed by 90%, it still needs to leave 0.1±0.035V 2 (meters) of guidance over the layer space (see GB7588-2003). It can be seen from this that according to the requirements of the elevator working conditions: when the elevator is running nor...

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Problems solved by technology

[0006] Not limited to the two patents listed above, although they have unique advantages, they cannot reflect the "role switching" mentioned by the applicant above

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