CN2674397Y

CN2674397Y - Plug gauge

Info

Publication number: CN2674397Y
Application number: CN 200320104409
Authority: CN
Inventors: 郑平
Original assignee: DONGFANG STEAM TURBINE PLANT
Current assignee: DEC Dongfang Turbine Co Ltd
Priority date: 2003-12-12
Filing date: 2003-12-12
Publication date: 2005-01-26
Anticipated expiration: 2013-12-12

Abstract

The utility model discloses a plug gauge for measuring the bulk of the gap, and the utility model provides a plug gauge of small error, reasonable structure convenient operation and wide application range. The plug gauge of the utility model comprises a fixed gauge, a vernier and a movable gauge. The fixed gauge is a plane gauge. The movable gauge is the inclined-shaped gauge with a base plane and an inclined plane. The vernier is sheathed on the fixed gauge, and the vernier is fixedly connected with the movable gauge. The base plane of the movable gauge is tightly clung to the fixed gauge. The vernier and the base plane of the movable gauge are glidingly matched with the fixed gauge together. Because the utility model has reasonable and compact structure, small volume, accurate measuring, high precision convenient operation and convenient storage and operation, the electronic digital display and the mechanical off-scale reading are used for the two purposes, and the utility model can be extensively used for measuring the gap in various industries.

Description

A kind of clearance gauge

Technical field

The utility model relates to survey instrument, specifically, relates to a kind of clearance gauge of measurement clearance size.

Background technology

In plant equipment production, installation, maintenance, need the gap between the measuring workpieces.When assembling such as steam turbine, repeated multiple times to measure flow passage component end plays at different levels, the installation site according to measurement result adjustment rotor safely and steadily runs to guarantee steam turbine.No matter adopted mechanical clearance gauge to measure, be bevel formula machinery clearance gauge in the past, or sheet type machinery clearance gauge, all with operating personnel's subjective judgement value, influenced greatly by human factor, measuring accuracy and accuracy are all relatively poor, and need service working times such as lot of data processing.China patent CN2543026Y discloses a kind of through-flow gap of steam turbine measurement mechanism, it adopts measuring head and blade is fixed, vernier is connected with the special control panel that is provided with, during measurement, measuring head advances, vernier is then done to slide relatively on blade to produce displacement, measures measured value, and this device has solved the deficiency of mechanical clearance gauge reading difficulty, low precision preferably.But there are certain defective and deficiency on its structure, fixedly connected with blade, make this device length longer, be unfavorable for operation and keeping as measuring head; Measuring head front end and control panel are "＜" shape, this measurement mechanism is damaged easily, and usable range are subjected to certain restriction.

The utility model content

The technical problems to be solved in the utility model is at deficiency of the prior art, to provide a kind of error clearance gauge little, rational in infrastructure, easy to use, applied widely.

The utility model is achieved by following technical proposals.

Clearance gauge of the present utility model comprises scale, vernier, moving chi, scale is a plane meter, moving chi is the oblique chi with basal plane and inclined-plane, and described vernier is set on the scale and with moving chi fixedlys connected, and the basal plane of moving chi is near scale, the basal plane of vernier and moving chi is with scale together and is slidingly matched, the vernier that is set on the scale plays orientation to the slip between moving chi and the scale, not the time spent, will move chi and regain, parallel with scale overlapping, whole blade is less.

Described vernier is the electronic digital display vernier, by the relative slip of vernier with scale, the variation in thickness of moving chi is concerned that by a certain percentage being converted into straight-line displacement changes, by holding the grid induction, change in displacement is converted into electric parameter to be changed, handle through special integrated chip, on display screen, directly show measured value, accuracy and precision height.

One end of described scale is connected with handle, and another termination is provided with a reference block, and the reference block front end is the measuring basis end face.

Described reference block section is " ㄩ " font, and moving chi passes from " ㄩ " word, and reference block play the guiding role simultaneously.

There is mechanical groove at the described scale back side, and mechanical groove is corresponding with moving chi measurement thickness, and vernier is provided with and counts indicator dog a moment, when digital readout system can not normally show, can utilize mechanical groove to measure.

The inclined-plane gradient of described moving chi is 1: 10 or 1: 20, and measurement range is respectively 0.5～5.5mm; 4～14mm; 12～22mm; Resolution is 0.01mm, and the user can select the clearance gauge of different size according to gap length.

The utility model is pressed digital display vernier on ﹠ off switch in use, earlier the calibration zero-bit: will move chi measuring junction and the snap on smooth flat of reference block end face, and calibrate zero-bit by the key that is provided with of display panel.During measurement, the italic of moving chi is inserted the gap, till can not moving in the gap with italic, promote scale datum end face is close to measured workpiece, press the maintenance key on the display panel, at this moment measured value is locked, before pressing reset key, no matter the how relative motion of moving chi, scale, video data all can not change, zero clearing behind the record reading.The utility model resolution is 0.01mm, and repeatable accuracy is 0.01mm, and stability is 0.01mm/h.

Because compact conformation of the present utility model is reasonable, volume is little, measurement is accurate, precision is high, easy to use, is convenient to keeping and operation, and electronic digital display and mechanical reading are dual-purpose, can be widely used in the measurement in various industries gap.

Description of drawings

Fig. 1 is the utility model front view.

Fig. 2 is that A-A schemes to analysing and observe (amplification) among Fig. 1.

Fig. 3 is the utility model structural representation.

Fig. 4 be among Fig. 3 B to partial enlarged view.

Synoptic diagram when Fig. 5 is the utility model measuring operation.

Among the figure: handle 1, scale 2, display screen 3, moving chi 4, reference block 5, vernier 6 is carved number indicator dog 7, groove 8, workpiece 9.

Embodiment

The utility model will be further described below in conjunction with accompanying drawing.

Embodiment 1 is as Fig. 1～Fig. 5: clearance gauge of the present utility model comprises scale 2, vernier 6, moving chi 4, scale 2 is a plane meter, moving chi 4 is for having the oblique chi on basal plane and inclined-plane, the inclined-plane ratio is 1: 10, vernier 6 is set on the scale 2 and with moving chi 4 fixedlys connected, the basal plane of moving chi 4 is near scale 2, the basal plane of vernier 6 and moving chi 4 is with scale 2 together and is slidingly matched, and scale 2 front ends are datum end face, is set in 6 pairs of moving chis 4 of vernier on the scale 2 and the slip between the scale 2 and plays orientation, vernier 6 is the electronic digital display vernier, directly show measured value on the display screen 3, not the time spent, will move chi 4 and regain, parallel overlapping with scale 2, whole blade is less.

Embodiment 2 is as Fig. 1～Fig. 5: clearance gauge of the present utility model comprises scale 2, vernier 6, moving chi 4, scale 2 is a plane meter, moving chi 4 is for having the oblique chi on basal plane and inclined-plane, the inclined-plane ratio is 1: 20, vernier 6 is set on the scale 2 and with moving chi 4 fixedlys connected, the basal plane of vernier 6 and moving chi 4 is with scale 2 together and is slidingly matched, vernier 6 is the electronic digital display vernier, directly show measured value on the display screen 3, one end of scale 2 is connected with handle 1, and another termination is provided with a reference block 5, and the section of reference block 5 is " ㄩ " font, moving chi passes from " ㄩ " word, and reference block play the guiding role simultaneously.

Embodiment 3 is as Fig. 1～Fig. 5: clearance gauge of the present utility model comprises scale 2, vernier 6, moving chi 4, scale 2 is a plane meter, moving chi 4 is for having the oblique chi on basal plane and inclined-plane, the inclined-plane ratio is 1: 20, vernier 6 is set on the scale 2 and with moving chi 4 fixedlys connected, the basal plane of moving chi 4 is near scale 2, the basal plane of vernier 6 and moving chi 4 is with scale 2 together and is slidingly matched, one end of scale 2 is connected with handle 1, another termination is provided with a reference block 5, and there is mechanical groove 8 at scale 2 back sides, and mechanical groove 8 is corresponding with moving chi 4 measurement thickness, during measurement, groove 8 values of carving number indicator dog 7 correspondences are measured value.

Above-mentioned clearance gauge compact conformation is reasonable, volume is little, and measurement is accurate, precision is high, easy to use, is convenient to keeping and operation, and electronic digital display and mechanical reading are dual-purpose, can be widely used in the measurement in gap under the various situations.

Claims

1. clearance gauge, comprise scale, vernier, moving chi, scale is a plane meter, and moving chi is the oblique chi with basal plane and inclined-plane, it is characterized in that: described vernier is set on the scale and with moving chi fixedlys connected, and the basal plane of vernier and moving chi is with scale together and is slidingly matched.

2. clearance gauge according to claim 1 is characterized in that: described vernier is the electronic digital display vernier.

3. according to claim 1 or 2 any one described clearance gauge, it is characterized in that: an end of described scale is connected with handle, and another termination is provided with a reference block.

4. clearance gauge according to claim 3 is characterized in that: described reference block is " ㄩ " font.

5. clearance gauge according to claim 4 is characterized in that: there is mechanical groove at the described scale back side, and vernier is provided with and counts indicator dog a moment.

6. clearance gauge according to claim 5 is characterized in that: the inclined-plane gradient of described moving chi is 1: 10 or 1: 20.