A method for measuring the elongation of a hydraulic cylinder
A measurement method and elongation technology, which is applied in the field of hydraulic cylinder elongation measurement devices, can solve the problems of high measurement cost, low measurement efficiency, complex structure, etc., and achieve the effects of good measurement effect, simple structure and convenient installation
Inactive Publication Date: 2016-01-20
CHINA UNIV OF MINING & TECH
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Problems solved by technology
These methods have the following problems: first, the structure is complex and installation is inconvenient; second, the measurement cost is high and the measurement efficiency is low
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Embodiment Construction
[0017] An embodiment of the present invention will be further described below in conjunction with accompanying drawing:
[0018] Such as figure 1 As shown, the hydraulic cylinder elongation measuring device of the present invention is mainly composed of a support 2, a signal processor 3, an A magnetic head 6, a B magnetic head 5 and a magnetic lattice; Install the support 2 at the bottom, arrange the A magnetic head 6 and the B magnetic head 5 on the support parallel to the axial direction of the piston rod 4, and face the piston rod 4 at a distance, and the A magnetic head 6 and the B magnetic head 5 are connected to the signal processor 3 through wires; On the surface of the piston rod 4, a plurality of magnetic lattices are magnetized at equal intervals along the axial direction, and the width of the magnetic lattices is equal to the distance between the magnetic lattices; the distance D between the A magnetic head 6 and the B magnetic head 5 arranged at intervals ≠nd, whe...
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The invention relates to a hydraulic cylinder length extension measuring device and a method. The hydraulic cylinder length extension measuring device comprises an A magnetic head, a B magnetic head, a support seat and a signal processor. The support seat is installed on the end portion of one side, close to a piston rod, of a cylinder body, and the two magnetic heads are arranged on the support seat along the axial direction parallel to the piston rod, and the two magnetic heads face towards the piston rod. The magnetic heads are connected with the signal processor, magnetic field variation of magnetic lattice when the piston rod extends can be measured through the magnetic heads, lead-leg relationship and frequency of alternating changing of magnetic field signals are analyzed so as the obtain the extension direction and length extension of the hydraulic cylinder. Distance of the magnetic lattice can be set according to needs so that sufficient measuring analysis rate is guaranteed, and structure of the hydraulic cylinder can not be destroyed without influencing the performance of the hydraulic cylinder. The hydraulic cylinder length extension measuring device has the advantages of being simple in structure, convenient to install, good in measuring effect and wide in practicality.
Description
technical field [0001] The invention relates to a device and method for measuring the elongation of a hydraulic cylinder, and is especially suitable for measuring the elongation of a plunger type hydraulic cylinder. Background technique [0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into linear motion mechanical work, and is widely used in industry. The elongation of the hydraulic cylinder not only reflects the stroke of the mechanism, but also can be used to control the leakage and instability of the hydraulic cylinder, which plays an important role in the intelligent control of equipment. Therefore, the measurement of hydraulic cylinder elongation has been widely concerned. The device for measuring the length of the boom cylinder with the publication number CN201110260344.2 uses a rotary encoder or an inclination sensor to measure the length of the boom cylinder through the geometric relationship of the boom. The hydraulic cylinder p...
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IPC IPC(8): G01B7/04
Inventor 朱真才睢文文李伟周公博陈国安王重秋
Owner CHINA UNIV OF MINING & TECH