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Hydraulic cylinder stroke measurement coating structure and preparation method thereof and stroke measurement system

A measurement system, hydraulic cylinder technology, applied in coating, metal material coating process, superimposed layer plating, etc., can solve problems such as troublesome installation process, influence of piston rod strength, easy formation of pores, etc.

Pending Publication Date: 2021-09-10
JIANGSU XCMG CONSTR MASCH RES INST LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the detection length of the piston rod using the hysteresis linear displacement sensor should not be too long, and it is necessary to reserve enough space to install the sensor; the built-in stroke detection device of the wire rope has a large shape, the installation process is troublesome, and the maintenance is labor-consuming and time-consuming; The quantitative built-in stroke test method needs to process spiral grooves at a certain distance on the surface of the piston rod base, and then spray the surface working layer. The coating prepared by this method is likely to form pores at the bottom of the groove, and the processing of the spiral groove has a negative impact on the strength of the piston rod. influences

Method used

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  • Hydraulic cylinder stroke measurement coating structure and preparation method thereof and stroke measurement system
  • Hydraulic cylinder stroke measurement coating structure and preparation method thereof and stroke measurement system
  • Hydraulic cylinder stroke measurement coating structure and preparation method thereof and stroke measurement system

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Effect test

Embodiment 1

[0027] Such as figure 2 As shown, a coating structure for hydraulic cylinder stroke measurement includes: a first coating 21 clad on the surface of the piston rod base 1, a second coating coated on the surface of the piston rod base 1 and the surface of the first coating 21 Layer 22 ; the first coating 21 evenly surrounds the surface of the piston rod base body 1 in a helical shape. When the second coating 22 is a magnetic material, the first coating 21 is a non-magnetic material; when the second coating 22 is a non-magnetic material, the first coating 21 is a magnetic material. The thickness of the first coating layer 21 is smaller than the thickness of the second coating layer 22 .

[0028] In this embodiment, the first coating 21 is used as a scale when measuring the stroke of the hydraulic cylinder, and is composed of a series of coatings with specific characteristics on the surface of the piston rod base 1 . The first coating 21 cladding on the surface of the piston ro...

Embodiment 2

[0032] Based on the coating structure for hydraulic cylinder stroke measurement described in Embodiment 1, this embodiment provides a method for preparing a coating structure for hydraulic cylinder stroke measurement, including: making a first coating on the surface of the piston rod substrate; A second coating is prepared on the surface of the piston rod substrate of the first coating, and the second coating is coated on the surface of the piston rod substrate and the surface of the first coating.

[0033] Making the first coating on the surface of the piston rod substrate includes: using ultra-high-speed forming technology, using laser beams, plasma beams or electron beams as heat sources, and cladding the first coating on the piston rod substrate under given process parameters surface, and the first coating evenly surrounds the surface of the piston rod substrate in a helical shape. Process parameters include energy spot size D, powder feeding speed V 1 , scanning speed V ...

Embodiment 3

[0042] Based on Embodiment 1 and Embodiment 2, this embodiment provides a hydraulic cylinder stroke measurement system, including a Hall sensor and a piston rod provided with the coating structure for hydraulic cylinder stroke measurement described in Embodiment 1. The Hall The sensor is installed on the end cover of the hydraulic cylinder; the measuring head of the Hall sensor is perpendicular to the coating structure on the piston rod and connected by magnetic coupling; the Hall sensor is electrically connected with the PLC. The stroke of the hydraulic cylinder is: L×(N i -1) + b, where L represents the pitch of the first coating after processing, b represents the width of the first coating, N i Indicates the i-th scale monitored by the Hall sensor.

[0043] Such as figure 1 , Figure 3~Figure 5 As shown, the Hall sensor 5 for stroke measurement is a Hall gear sensor, installed on the end cover 3 of the hydraulic cylinder, and fixed on the cylinder 4 . During the working...

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Abstract

The invention discloses a hydraulic cylinder stroke measurement coating structure and a preparation method thereof, and a stroke measurement system, and belongs to the technical field of hydraulic cylinder stroke measurement. The coating structure comprises a first coating cladding the surface of a piston rod base body, as well as a second coating covering the surface of the piston rod base body and the surface of the first coating, and the first coating is spirally and uniformly wound around the surface of the piston rod base body. According to the structure, by using an ultra-high-speed forming technology, the first coating is prepared on the surface of the piston rod base body as a scale structure, the first coating and the surface of the piston rod base body are covered with the second coating, the coating structure and the surface of the piston rod base body are tightly combined, a spiral groove does not need to be machined in the surface of the piston rod base body, and the overall strength of a piston rod is not affected.

Description

technical field [0001] The invention belongs to the technical field of hydraulic cylinder stroke measurement, and in particular relates to a coating structure for hydraulic cylinder stroke measurement, a preparation method and a stroke measurement system. Background technique [0002] As an important hydraulic actuator for heavy equipment, hydraulic cylinders are widely used in large-scale equipment hydraulic systems such as construction machinery and marine engineering equipment. As the market competition becomes increasingly fierce, and customers have higher and higher requirements for the service performance and reliability of large-scale equipment such as construction machinery, strict service requirements are put forward for the service performance of hydraulic cylinders. Among them, intelligence, as an important development direction of heavy equipment, will become an important factor influencing the competitiveness of heavy equipment in the future, so higher requireme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C23C4/129C23C4/134C23C28/00
CPCC23C24/10C23C4/129C23C4/134C23C28/00
Inventor 蹤雪梅王井员霄
Owner JIANGSU XCMG CONSTR MASCH RES INST LTD