Servo self-locking boosting hydraulic cylinder

Abstract

The invention discloses a servo self-locking boosting hydraulic cylinder. The servo self-locking boosting hydraulic cylinder comprises a main and auxiliary hydraulic cylinder boosting mechanism, a servo self-locking mechanism, a hydraulic resetting mechanism and a rod end self-adapting ball head seat, wherein the servo self-locking mechanism is used for self-locking of a main hydraulic cylinder piston rod; the hydraulic resetting mechanism pushes a retraction-stopping ring to move outwards through extending of a piston rod of a resetting small hydraulic cylinder arranged in the section of theretraction-stopping ring, so that the servo self-locking mechanism is separated and released from the locking state and the main hydraulic cylinder piston rod freely retracts. According to the servo self-locking mechanism, the locking force of ratchet teeth which mesh with each other is large, so that the servo self-locking mechanism is safe and reliable; when the main hydraulic cylinder retracts,oil is supplied to the resetting small hydraulic cylinder to separate the ratchet teeth which mesh with each other to release a locking device, so that the main hydraulic cylinder retracts. The mainand auxiliary hydraulic cylinders work at the same time to increase the thrust of the main hydraulic cylinder, and the thrust of the main hydraulic cylinder is greatly increased, and the servo self-locking boosting hydraulic cylinder is economical, environmentally friendly, safe and reliable.

Description

technical field [0001] The invention relates to a hydraulic oil cylinder, in particular to a follow-up self-locking booster hydraulic oil cylinder. Background technique [0002] At present, hydraulic cylinder self-locking is divided into oil circuit self-locking and mechanical self-locking. Oil circuit self-locking is to install a hydraulic valve to maintain pressure, so that the hydraulic oil of the oil cylinder does not return to the oil tank, and the oil chamber of the oil cylinder is filled with a certain pressure. Oil. The mechanical nut type self-locking is to install a nut on the piston rod of the oil cylinder. When the piston rod of the oil cylinder reaches the required position, turn the nut on the piston rod of the oil cylinder to the end to contact the cylinder body, so that the piston rod will fixed to the desired position. When the oil cylinder needs to be retracted, the nut is screwed up to allow the piston rod to return. At present, if the hydraulic cylinde...

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Problems solved by technology

[0004] 1. The oil circuit is self-locking, but due to the large size of the hydraulic lock, it is difficult to install and maintain in places where the installation space is limited; moreover, because the hydraulic lock spool cannot achieve "zero" leakage, when the oil cylinder is subjected to a large load Or as time goes by, the piston rod will still move and affect the locking effect, resulting in operator safety accidents and equipment damage

[0005] 2. Mechanical nut self-locking, because when the piston rod of the oil cylinder reaches the required position, manpower is required to rotate the nut on the piston rod of the oil cylinder to the end and contact the cylinder body of the oil cylinder to achieve the locking effect. There is a time sequence , you must wait for the piston rod of the oil cylinder to extend to the required position and then stop, and then artificially rotate the nut on the piston rod of the oil cylinder to the bottom to contact the cylinder body. Specific working conditions will prevent the construction from proceeding smoothly or cause safety accidents for operators and equipment damage

This will increase labor costs and increase labor intensity, and in some harsh environments such as: underground, underground and some dangerous places, the construction cannot even be carried out smoothly

[0007] 4. Increase the working pressure of the oil supply hydraulic system to increase the working thrust of the hydraulic cylinder, which will increase the load of the oil pump and motor, increase the load of each hydraulic valve and pipeline, which will increase the wear and tear of each moving part and increase energy consumption, which is not conducive to Energy saving and environmental protection, if the working pressure of the hydraulic system is increased blindly, it will cause damage to the motor, oil pump, hydraulic valve and pipeline, resulting in operator safety accidents and equipment damage

[0008] 5. Increase the bore of the hydraulic cylinder to obtain greater output and thrust, which will affect the use in some occasions where the installation size is required. Increasing the bore of the hydraulic cylinder will cause waste of raw material resources and increase processing difficulty and processing costs. , and not economical and environmentally friendly

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