Device for detecting displacement of hydraulic cylinder

Abstract

The invention discloses a device for detecting the displacement of a hydraulic cylinder, and belongs to the technical field of detection. The hydraulic cylinder comprises a cylinder block and a piston rod stretching out of the cylinder block. The device comprises a shell and a displacement transducer arranged in the shell. The piston rod stretching out of the cylinder block is sleeved with the shell, and the shell is fixedly connected with the cylinder block. The device further comprises a connecting shaft, a guide plate, a lever, a mounting plate and an angle transducer used for detecting the rotating angle of the lever. The guide plate comprises a first flat plate and a second flat plate vertically connected with the first flat plate. One end of the connecting shaft is connected with the piston rod stretching out of the cylinder block, the axis of the connecting shaft is parallel to or coincides with that of the piston rod, and the other end of the connecting shaft is vertically connected to the first flat plate. The displacement transducer is arranged on the first flat plate. The mounting plate is fixed to the shell. One end of the lever is rotationally mounted on the mounting plate, the rotating axis of the lever is perpendicular to the axis of the piston rod, and other end of the lever is connected with the second flat plate. By adoption of the device for detecting the displacement of the hydraulic cylinder, the stability of control over the hydraulic cylinder can be improved.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a device for detecting displacement of a hydraulic oil cylinder. Background technique [0002] The hydraulic cylinder includes a cylinder body, a piston and a piston rod. The piston divides the cylinder body into two cavities. One cavity contains hydraulic oil. One end of the piston rod is set in the other cavity and connected vertically to the piston. The piston rod The other end protrudes from the cylinder body. During the working process of the hydraulic cylinder, the hydraulic oil in the cavity can push the piston to move in a straight line, and part of the piston rod will extend out of the cylinder body, or part of the piston rod can be retracted into the cylinder body under the action of external force. Wherein, the expansion and contraction of the piston rod all make linear motion along the axial direction of the piston rod. [0003] At present, during the working proc...

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Problems solved by technology

[0005] If the displacement sensor fails, it will directly affect the control of the piston rod and fail to achieve the expected effect

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