CN101493344A

CN101493344A - Draw-out type displacement sensor

Info

Publication number: CN101493344A
Application number: CNA2008100328932A
Authority: CN
Inventors: 朱有章
Original assignee: HUALONG DETECTOR CO Ltd SHANGHAI
Current assignee: HUALONG DETECTOR CO Ltd SHANGHAI
Priority date: 2008-01-22
Filing date: 2008-01-22
Publication date: 2009-07-29

Abstract

The invention relates to a draw-out displacement transducer. The displacement transducer comprises a box body (4), a wire rope (3) as well as a spring coiling type shrinking mechanism (A) arranged in the box body and an encoder (1); the spring coiling type shrinking mechanism (A) consists of a spring shaft, a spring disk (7) and a disk type winding mechanism (9), wherein, one end of the spring shaft is fixedly connected with the box body (4), the spring disk (7) is arranged on a shaft body and can rotate around the shaft, one end of the disk type winding mechanism (9) is fixed on a locating shaft (10), and the other end of the disk type winding mechanism (9) is fixed on an inner cavity of the spring disk; one end of the wire rope (3) is fixed on the spring disk (7) and led out after winding a winding shaft (2) connected with an encoder rotating shaft (11); and the other leading-out end of the wire rope (3) is directly connected with a hook (5). The draw-out displacement transducer has high accuracy grade in detection, and can select an encoder with corresponding accuracy grade as required; meanwhile, as the winding shaft, the box body, the hook, a spring cover, the spring disk (a winding mechanism box), the spring shaft, the winding mechanism, the locating shaft and the like can be made from light materials, the draw-out displacement transducer has the advantages of lighter overall weight, small physical dimension and convenient mounting.

Description

A kind of draw-out type displacement sensor

Technical field

The present invention relates to a kind of displacement transducer, especially a kind of bigger draw-out type displacement sensor of measurement range that uses scrambler.

Background technology

Used sensor majority is a differential displacement sensor during past measurement change in displacement, and this lower grade of sensor accuracy, and quality is heavier, and physical dimension is bigger than normal, installs inconvenient.

Summary of the invention

The objective of the invention is to: a kind of accuracy class height is provided, light weight, physical dimension is little, displacement transducer easy for installation.

This draw-out type displacement sensor comprises box body 4, wire rope 3 and is located at box body interior spring type contracting mechanism A and scrambler 1; Described spring type contracting mechanism A by the fixed winder of an end and box body 4, be located at the spring dish 7 that can rotate around the axis on the axis body and an end and be fixed on the dish type clockwork spring 9 that the other end on the locating shaft 10 is fixed on spring dish inner chamber and form; One end of described wire rope 3 is fixed on the spring dish 7 and the winding axle through being connected 2 with scrambler rotating shaft 11 overlap around after draw; Its other end of drawing then directly is connected with hook 5.

The described axle 2 outer limiting plates 12 that mate with wire rope 3 that are provided with that twine.

Described wire rope 3 overlaps around half-turn on winding axle 2 at least.

Scrambler can be according to the measuring accuracy requirement, and selecting for use rotates a circle can reach the different coding device of 2500 pulses, 5000 pulses or 10000 pulses.

This draw-out type displacement sensor according to above technical scheme proposes not only detects service precision grade height, and can select the scrambler of corresponding accuracy class on demand; All can select light material for use owing to twine axle, box body, hook, spring lid, spring dish (going barrel), winder, clockwork spring, locating shaft etc. simultaneously, so overall weight is low weight, physical dimension is little, and is easy for installation.

Description of drawings

Fig. 1 is the draw-out type displacement sensor front view

Fig. 2 is the draw-out type displacement sensor vertical view

Among the figure: 1-scrambler 2-twines axle 3-wire rope 4-box body 5-hook 6-spring lid 7-spring dish (going barrel) 8-winder 9-clockwork spring 10-locating shaft 11-scrambler turning axle 12-limiting plate 13-hook deck

Embodiment

Further describe the present invention and provide embodiments of the invention below in conjunction with accompanying drawing.

Described wire rope 3 overlaps around half-turn on winding axle 2 at least.

The principle of work of this draw-out type displacement sensor is: wire rope one end is connected on the hook, the other end is wrapped in going barrel and twines on the axle, because the turning axle of the scrambler of design and the coaxial rotation of winding axle, when Displacement Measurement changes, the wire rope of extracting out drives spring dish (going barrel) and rotates synchronously with the fixed winding axle of scrambler turning axle, therefore the just equivalent rotation value that converts scrambler to of change in displacement value demonstrates deflection by electrical system again, finishes surveying work.After measuring end, shrink automatically, wire rope, hook are resetted by clockwork spring.

In actual use, scrambler can be selected the different coding device of 2500 pulses that rotate a circle, 5000 pulses, 10000 pulses for use according to the measuring accuracy requirement.

Claims

1, a kind of draw-out type displacement sensor comprises box body (4), wire rope (3) and is located at box body interior spring type contracting mechanism (A) and scrambler (1); Described spring type contracting mechanism (A) by the fixed winder of an end and box body (4), be located at the spring dish (7) that can rotate around the axis on the axis body and an end and be fixed on locating shaft (10) and go up the dish type clockwork spring (9) that the other end is fixed on spring dish inner chamber and form; One end of described wire rope (3) is fixed on that spring dish (7) is gone up and the winding axle (2) through being connected with scrambler rotating shaft (11) overlap around after draw; Its other end of drawing then directly is connected with hook (5).

2, a kind of draw-out type displacement sensor as claimed in claim 1 is characterized in that: the described outer limiting plate (12) that mates with wire rope (3) that is provided with of axle (2) that twines.

3, a kind of draw-out type displacement sensor as claimed in claim 1 is characterized in that: described wire rope (3) is gone up cover around half-turn at winding axle (2) at least.

4, a kind of draw-out type displacement sensor as claimed in claim 1 is characterized in that: scrambler (1) can be according to the measuring accuracy requirement, and selecting for use rotates a circle can reach the different coding device of 2500 pulses, 5000 pulses or 10000 pulses.