CN201034569Y

CN201034569Y - Measuring apparatus

Info

Publication number: CN201034569Y
Application number: CNU2007200789639U
Authority: CN
Inventors: 赵先觉
Original assignee: Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd; Panzhihua New Steel and Vanadium Co Ltd
Current assignee: Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd; Panzhihua New Steel and Vanadium Co Ltd
Priority date: 2007-03-30
Filing date: 2007-03-30
Publication date: 2008-03-12
Anticipated expiration: 2017-03-30

Abstract

The utility model discloses a measuring device, comprising a displacement sensor (7) which has a measuring bar (7a) and a slip device which is pushed to slide in the axial direction of the measuring bar (7a) by a measured part. The front part of the slip device is contacted with the measured part, and the post part acts on the measuring bar (7a). The benefit effects of the utility model are that the displacement of the measured part is transported to the measuring bar of the displacement sensor by the slip device during the measurement, the measuring bar is not contacted with the measured part directly, so the sensor can be protected effectively and the service life of the sensor can be prolonged. The utility model has the advantages of compact structure, convenient adjustment and reliable operation, so the utility model is especially suitable for the displacement or position measurement of the cylindrical surface measuring parts.

Description

Measurement mechanism

Technical field

The utility model relates to a kind of measurement mechanism, particularly a kind of measurement mechanism that is used for Displacement Measurement or position.

Background technology

In the Installation and Debugging of plant equipment, need measure the position or the displacement of parts, be equipped with control corresponding and digital display device as measuring system with displacement transducer, can measure and obtain comparatively accurate measured value easily, thereby use comparatively extensive.Sensor is the vigour part of measuring system most critical, and the sensor price that precision is high is comparatively expensive, also more fragile.

In the existing measuring system, when carrying out displacement or position measurement, tested parts directly contact with the head of sensor measuring staff, and the shift transformation of sensor measuring staff is corresponding electrical quantity, shows with digital display or computing machine afterwards.

There are two problems in above-mentioned measuring system, and the one, the head of sensor is because of being subjected to tested parts friction or being subjected to clashing into and damaging; The 2nd, the head of sensor is spherical often, when the shape of tested parts is comparatively complicated, such as the face of cylinder, contraposition is accurate when just requiring to measure, otherwise cause bigger measuring error, though also can select the sensor that has special-shaped measuring staff for use, the sensor measuring staff will be subjected to having with its direction of motion the additional forces of certain angle, causes the bending of measuring staff easily.

The utility model content

Technical problem to be solved in the utility model provides a kind of measurement mechanism, and this measurement mechanism can be protected sensor effectively in measuring process, and measures conveniently.

The technical scheme that its technical matters that solves the utility model adopts is: measurement mechanism of the present utility model, comprise displacement transducer with measuring staff, it is characterized in that: further comprising the slide device that promotes by tested parts along the measuring staff axial slip, the front portion of this slide device contacts with tested parts, and its rear portion then acts on the measuring staff.

After taking abovementioned technology, the displacement of tested parts passes to the measuring staff of displacement transducer by slide device during measurement, because measuring staff does not directly contact with tested parts, therefore can protect sensor effectively, and prolong the serviceable life of sensor.

As a kind of preferred version of the present utility model, more compact for making the measurement mechanism one-piece construction, described slide device is installed on the saddle, and this saddle and described displacement transducer are installed on the guide plate.

As further optimization to above-mentioned preferred version, adjust for guaranteeing measuring accuracy and being convenient to, be provided with between described saddle and the guide plate and make the micro-adjusting mechanism of saddle along the measuring staff axial slip.

The beneficial effects of the utility model are, the displacement of tested parts passes to the measuring staff of displacement transducer by slide device during measurement, because measuring staff does not directly contact with tested parts, therefore can protect sensor effectively, and prolong the serviceable life of sensor.Characteristics with compact conformation, easy to adjust and reliable operation are specially adapted to the displacement of part or the measurement of position are surveyed in the face of cylinder.

Description of drawings

This instructions comprises following two width of cloth accompanying drawings:

Fig. 1 is the structural representation of the utility model measurement mechanism;

Fig. 2 is the vertical view of the utility model measurement mechanism;

Parts, toponym and pairing mark among the figure: gauge head 1, pilot hole 1a, saddle 2, gathering sill 2a, adjustment plate 3, differential screw rod 4, nut seat 5, guide plate 6, displacement transducer 7, measuring staff 7a, back guide pin bushing 8, guide rod 9, retracing spring 10, packing ring 11, swivel nut 12, pilot pin 13, preceding guide pin bushing 14.

Embodiment

Below in conjunction with drawings and Examples the utility model is further specified.

With reference to Fig. 1, measurement mechanism of the present utility model comprises the displacement transducer 7 with measuring staff 7a, and the slide device along measuring staff 7a axial slip that is promoted by tested parts, the front portion of this slide device contacts with tested parts, and its rear portion then acts on the measuring staff 7a.The displacement of tested parts passes to the measuring staff 7a of displacement transducer 7 by slide device during measurement, because measuring staff 7a does not directly contact with tested parts, therefore can protect sensor effectively, and prolong the serviceable life of sensor.

With reference to Fig. 1, more compact for making the measurement mechanism one-piece construction, described slide device is installed on the saddle 2, and this saddle 2 and described displacement transducer 7 are installed on the guide plate 6.

Adjust for guaranteeing measuring accuracy and being convenient to, be provided with between described saddle 2 and the guide plate 6 and make the micro-adjusting mechanism of saddle 2, a kind of structure has been shown among Fig. 1, Fig. 2 has simplified the most and adjust easy to operate micro-adjusting mechanism along measuring staff 7a axial slip.See figures.1.and.2, described micro-adjusting mechanism comprises adjustment plate 3 that is fixed on the saddle 2 and the nut seat 5 that is fitted on the guide plate 6, and be installed in its front end on the nut seat 5 and act on the differential screw rod of adjusting on the plate 34, the lateral separation offers the axially extended gathering sill 2a along measuring staff 7a on the described saddle 2, and saddle 2 is formed with guide plate 6 by the screw that passes gathering sill 2a and is connected.During adjustment, unclamp the screw of fastening guide plate 6, the differential screw rod 4 of turn moves guide plate 6, after sensor 7 obtains desired initial value, screws screw guide plate 6 is fastened on the saddle 2.

A kind of structure has been shown among Fig. 1 has simplified slide device the most.This slide device comprises gauge head 1 and the guide rod 9 that is attached thereto, and this guide rod 9 is slidingly matched with preceding guide pin bushing 14, the back guide pin bushing 8 of saddle 2 upper edge measuring staff 7a axially spaced-apart settings.The front threads of described guide rod 9 is fastened with swivel nut 12, and between the front end face of the rear end face of this swivel nut 12 and back guide pin bushing 8, be provided with retracing spring 10, the effect of retracing spring 10 is that swivel nut 12 front end faces are contacted with the rear end face of preceding guide pin bushing 14, farthest to eliminate measuring error.A packing ring 11 also can be filled up in swivel nut 12 rear ends, and the front end of retracing spring 10 acts on this packing ring 11.With reference to Fig. 1, the afterbody of described guide rod 9 offers counterbore, and the head of described measuring staff 7a stretches in this counterbore.With reference to Fig. 1, offer pilot hole 1a on the described gauge head 1, be set with the pilot pin 13 that stretches in this pilot hole 1a on the front end face of saddle 2, its effect of pilot pin 13 is to prevent that gauge head 1 on the throne moving past in the journey from rotating.With reference to Fig. 3, the end face of described gauge head 1 is elongated, can make when measuring and the contraposition of tested parts becomes very easy, is specially adapted to the measurement to face of cylinder displacement or position.For the measuring staff 7a that makes sensor 7 contacts with the counterbore bottom surface of guide rod 9 afterbodys all the time, sensor 7 should preferably adopt measuring staff self-return type.During measurement, measured parts promote gauge head 1 and move axially, so promote sensor 7 measuring staff 7a move, the amount that is moved is transformed into electric signal by sensor 7, this electric signal is delivered to digital display device or computing machine.After tested parts broke away from gauge head 1, under the effect of retracing spring 10, gauge head 1 resetted.

Some principles of the above the utility model measurement mechanism that just explains through diagrams, be not be the utility model measurement mechanism to be confined to shown in and in described concrete structure and the scope of application, so every the corresponding modify and equivalent that might be utilized all belongs to the claim that the utility model is applied for.

Claims

1. measurement mechanism, comprise the have measuring staff displacement transducer (7) of (7a), it is characterized in that: further comprising the slide device along measuring staff (7a) axial slip that is promoted by tested parts, the front portion of this slide device contacts with tested parts, and its rear portion then acts on the measuring staff (7a).

2. measurement mechanism as claimed in claim 1 is characterized in that: described slide device is installed on the saddle (2), and this saddle (2) and described displacement transducer (7) are installed on the guide plate (6).

3. measurement mechanism as claimed in claim 2 is characterized in that: be provided with between described saddle (2) and the guide plate (6) and make the micro-adjusting mechanism of saddle (2) along measuring staff (7a) axial slip.

4. measurement mechanism as claimed in claim 3, it is characterized in that: described micro-adjusting mechanism comprises the adjustment plate (3) that is fixed on the saddle (2) and is fitted in nut seat (5) on the guide plate (6), and is installed in nut seat (5) and goes up its front end and act on the differential screw rod of adjusting on the plate (3) (4); Described saddle (2) is gone up the lateral separation and is offered along the axially extended gathering sill of measuring staff (7a) (2a), and saddle (2) is formed with guide plate (6) by the screw that passes gathering sill (2a) and is connected.

5. as claim 2,3 or 4 described measurement mechanisms, it is characterized in that: the guide rod (9) that described slide device comprises gauge head (1) and is attached thereto, this guide rod (9) is slidingly matched with preceding guide pin bushing (14), back guide pin bushing (8) that saddle (2) upper edge measuring staff (7a) axially spaced-apart is provided with.

6. measurement mechanism as claimed in claim 5 is characterized in that: described guide rod (9) has the front portion to be socketed with swivel nut (12), and is provided with retracing spring (10) between the front end face of the rear end face of this swivel nut (12) and back guide pin bushing (8).

7. measurement mechanism as claimed in claim 6 is characterized in that: the afterbody of described guide rod (9) offers counterbore, and the head of described measuring staff (7a) stretches in this counterbore.

8. measurement mechanism as claimed in claim 6 is characterized in that: offer pilot hole (1a) on the described gauge head (1), be set with the pilot pin (13) that stretches in this pilot hole (1a) on the front end face of saddle (2).

9. measurement mechanism as claimed in claim 6 is characterized in that: the end face of described gauge head (1) is elongated.