CN208780059U - A kind of measurements of form and position deviation device based on revolution axle center - Google Patents
A kind of measurements of form and position deviation device based on revolution axle center Download PDFInfo
- Publication number
- CN208780059U CN208780059U CN201821563630.XU CN201821563630U CN208780059U CN 208780059 U CN208780059 U CN 208780059U CN 201821563630 U CN201821563630 U CN 201821563630U CN 208780059 U CN208780059 U CN 208780059U
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- China
- Prior art keywords
- arm
- measuring staff
- measurements
- axle center
- position deviation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a kind of measurements of form and position deviation device based on revolution axle center, including round frame is surveyed, surveying round frame includes the revolving support arm that can be circumferentially rotated and move linearly, and is equipped with dial gauge on revolving support arm, is equipped with rolling mechanism in measuring staff bottom end；The rolling mechanism includes braced frame, and the braced frame is fixedly connected in measuring head, and bearing, the shaft centerline of bearing and the perpendicular setting of measuring staff center line are rotatably connected in braced frame；Measurement protection mechanism is installed on revolving support arm; the measurement protection mechanism includes the linking arm being fixed on revolving support arm; protection straight-arm is installed on the connecting arm; it is equipped with the bar shaped positioning through hole being arranged along measuring staff centerline direction on the connecting arm; positioning bolt is equipped on protection straight-arm, positioning bolt passes through bar shaped positioning through hole and is slidably connected with bar shaped positioning through hole；Overall structure is simple, at low cost, is a kind of convenient and fast measurements of form and position deviation device based on revolution axle center of dismounting.
Description
Technical field
The utility model belongs to element circularity and flatness field of measuring technique, in particular to a kind of based on revolution axle center
Measurements of form and position deviation device.
Background technique
In Hydropower Plant transformation process, the measurement control of turbine-generator units plays installation quality very heavy
The effect wanted.The mechanical equipment improvement and installation adjusting stage, the Comparision for needing to measure is more, also needs to survey repeatedly when many
Amount, the amount of labour is big, precision controlling require it is high, such as the circularity of runner envelope, stator positioning bar circularity, rotor roundness, top cover circularity,
Boring port radius and end face plane degree, pushing refer to the measurement of flatness etc. above and below seat ring, and many measurement work time and effort consumings are right
Duration is affected.
Common measurement method is first to adjust the axle center for surveying round frame using round frame is surveyed, then determine a certain position as base
Object staff cun, then dial gauge is fixed on surveying round frame, reference dimension is set to the zero-bit of dial gauge, then pull the pointer of dial gauge,
It allowing pointer to retract, dial indicator head is made to leave measurement surface, round frame support arm is surveyed in revolution, after dial gauge reaches measurement designated position,
Pointer is unclamped, pointer contact measuring point carries out realization measurement, and the reading of dial gauge is tested position relative to reference dimension
Deviation.For example, the tooth support measurement of planeness of generator unit stator lower part, needs to refer to that position is surveyed to 504 pressures for one week
Amount, each pressure refer to it is upper to measure inside and outside two data, that is to say, that in the adjustment of tooth support, only once measure, it is necessary to survey
1008 data are measured, need ceaselessly to lift the measuring staff for putting dial gauge in measurement process.On the other hand do not connect since tested part has
Continuous property, the very big feature of quantity, so that the time-consuming effort of whole process, also will cause dial gauge displacement unless you give your whole attention to it and generate survey
Measure error.
Summary of the invention
This practice is designed to provide a kind of measurements of form and position deviation device based on revolution axle center；Institute in order to achieve the above objectives
It adopts the technical scheme that:
A kind of measurements of form and position deviation device based on revolution axle center, including survey round frame, survey round frame include can circumferentially rotate and
The revolving support arm of linear movement, is equipped with dial gauge on revolving support arm, and the dial gauge includes dial plate and measuring staff, measuring staff
Bottom end is measuring head, and measuring staff top is stretched out at the top of dial plate, and the displacement of measuring staff movement is shown on dial plate, is installed in measuring staff bottom end
There is rolling mechanism；The rolling mechanism includes braced frame, and the braced frame is fixedly connected in measuring head, in braced frame
Inside it is rotatably connected to bearing, the shaft centerline of bearing and the perpendicular setting of measuring staff center line；It is equipped on revolving support arm
Protection mechanism is measured, the measurement protection mechanism includes the linking arm being fixed on revolving support arm, is equipped on the connecting arm
Straight-arm is protected, is equipped with the bar shaped positioning through hole being arranged along measuring staff centerline direction on the connecting arm, is assembled on protection straight-arm
There is positioning bolt, positioning bolt passes through bar shaped positioning through hole and is slidably connected with bar shaped positioning through hole, is furnished on positioning bolt
Fastening nut.
Preferably, the front end of the protection straight-arm is conical cambered surface tip, and the diameter at conical cambered surface tip is less than axis
The diameter held.
Preferably, the diameter of the bearing is not more than three times of measuring staff diameter.
Preferably, the dial gauge is digital display type dial gauge, and digital display type dial gauge is connected with external-connection displayer.
It has the beneficial effect that (1) installs rolling mechanism additional at measuring staff measuring head possessed by the utility model, is turning round in this way
During support arm rotates, even if encounter the raised or lesser step of partial discontinuous, measuring staff measuring head can be suitable
Benefit improves accuracy of measurement by the loosening for the fixed position of shaking or dial gauge for avoiding measuring staff；(2) rolling mechanism
Setting eliminate and lift manually originally, put down the operation of measuring staff, substantially increase measurement efficiency；(3) by revolving support
The setting that protection mechanism is measured on arm, has further functioned as protective effect to measuring staff 8, avoids and measures under extreme case more than hundred
Damage when dividing table range to measuring staff and dial gauge 7；(4) it need not just be climbed up and down by the setting survey crew of digital display type dial gauge
It climbs, reduces security risk, convenient reading saves the time, and digital display type dial gauge has automatic zero set function, can directly read
Take deviation；(5) overall structure is simple, at low cost, be it is a kind of dismounting easily based on revolution axle center the measurements of form and position deviation dress
It sets.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 for dial gauge in Fig. 1 institute's diagram.
Specific embodiment
The utility model is further described with reference to the accompanying drawing.
As depicted in figs. 1 and 2, a kind of measurements of form and position deviation device based on revolution axle center, including surveying round frame, (conventional is set
It is standby to be not shown in the figure), surveying round frame includes the revolving support arm that can be circumferentially rotated and move linearly, and is equipped on revolving support arm
Dial gauge 7, the dial gauge 7 include dial plate 6 and measuring staff 8, are equipped with mounting ear 11 at 6 back side of dial plate, 8 bottom end of measuring staff is measurement
6 top of dial plate is stretched out on head, 8 top 5 of measuring staff, and the displacement that measuring staff 8 moves is shown on dial plate 6, is equipped with rolling in 8 bottom end of measuring staff
Motivation structure；The rolling mechanism includes braced frame 10, and the braced frame 10 is fixed on the bottom end of measuring staff 8, i.e., fixed to connect
It connects in measuring head, bearing 9 is rotatably connected in braced frame 10, shaft centerline and 8 center line of measuring staff of bearing 9 mutually hang down
Straight setting；Measurement protection mechanism is installed on revolving support arm, the measurement protection mechanism includes being fixed on revolving support arm
On linking arm 1, be equipped on linking arm 1 protection straight-arm 4, on linking arm 4 be equipped with along 8 centerline direction of measuring staff be arranged
Bar shaped positioning through hole 2, be equipped with positioning bolt 3 on protection straight-arm 4, positioning bolt 3 pass through bar shaped positioning through hole 2 and with item
Shape positioning through hole 2 is slidably connected, and is furnished with fastening nut on positioning bolt 3.
In order to improve protection 4 top of straight-arm and equipment under test contact precision, the front end of the protection straight-arm 4 is conical arc
Face tip 12, the minimum diameter at conical cambered surface tip 12 are less than the diameter of bearing 9.
Equally, in order to improve bearing 9 and equipment under test contact precision, the diameter of the bearing 9 is no more than 8 diameter of measuring staff
Three times.
In the prior art when higher position measures data, generally requiring to climb carries out record data, and operation is very
Slowly but also there is security risk, therefore dial gauge 7 is changed to digital display type dial gauge, and digital display type dial gauge is connected with outside
Connect display, in this way by wired or wireless transmission method can by measurement data real-time display on external-connection displayer,
Substantially increase measurement efficiency.
When the utility model is used, fixing survey round frame first, the axle center of round frame is surveyed in adjustment, then determines a certain position
As reference dimension, dial gauge 7 is fixed on revolving support arm, protection straight-arm 4 is adjusted in linking arm 1 by positioning bolt 3
Fixation position, guarantee that the interval between conical 12 bottom end of cambered surface tip and 9 bottom of bearing is less than the amount that measuring staff 8 moves upwards
Journey, to play a protective role to measuring staff 8；Then rotation revolution support arm, when arrival is needed at measurement position, dial gauge 7
Reading is the deviation at measured position relative to reference dimension.And so on by measurement in need point all measured
Finish.
Have the advantages that (1) installs rolling mechanism additional at 8 measuring head of measuring staff compared with current measuring device, in this way
During the rotation of revolving support arm, even if encounter the raised or lesser step of partial discontinuous, 8 measuring head of measuring staff
It can pass through and avoid the shaking of measuring staff 8 or the loosening of the fixed position of dial gauge 7, improve accuracy of measurement；(2)
The setting of rolling mechanism eliminates the operation for lifting, putting down measuring staff 8 manually originally, substantially increases measurement efficiency；(3) by
The setting that protection mechanism is measured on revolving support arm, has further functioned as protective effect to measuring staff 8, has avoided and survey under extreme case
Damage when amount is more than 7 range of dial gauge to measuring staff 8 and dial gauge 7；(4) just by the setting survey crew of digital display type dial gauge
It need not climb up and down, reduce security risk, convenient reading saves the time, and digital display type dial gauge has automatic zero set function,
Deviation can be directly read；(5) overall structure is simple, at low cost, is a kind of dismount easily based on the morpheme of revolution axle center
Deviation measurement device.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement, but these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (5)
1. a kind of measurements of form and position deviation device based on revolution axle center, including round frame is surveyed, survey round frame is including that can circumferentially rotate and directly
The mobile revolving support arm of line, which is characterized in that dial gauge is installed on revolving support arm, the dial gauge include dial plate and
Measuring staff, measuring staff bottom end are measuring head, and measuring staff top is stretched out at the top of dial plate, and the displacement of measuring staff movement is shown on dial plate, are being surveyed
Bar bottom end is equipped with rolling mechanism；The rolling mechanism includes braced frame, and the braced frame is fixedly connected in measuring head,
Bearing, the shaft centerline of bearing and the perpendicular setting of measuring staff center line are rotatably connected in braced frame.
2. the measurements of form and position deviation device according to claim 1 based on revolution axle center, which is characterized in that in revolving support
Measurement protection mechanism is installed, the measurement protection mechanism includes the linking arm being fixed on revolving support arm, is being connected on arm
Protection straight-arm is installed on arm, the bar shaped positioning through hole being arranged along measuring staff centerline direction is equipped on the connecting arm, is protecting
Positioning bolt is equipped on straight-arm, positioning bolt passes through bar shaped positioning through hole and is slidably connected with bar shaped positioning through hole, positioning
It is furnished with fastening nut on bolt.
3. the measurements of form and position deviation device according to claim 2 based on revolution axle center, which is characterized in that the protection is straight
The front end of arm is conical cambered surface tip, and the diameter at conical cambered surface tip is less than the diameter of bearing.
4. the measurements of form and position deviation device according to claim 3 based on revolution axle center, which is characterized in that the bearing
Diameter is not more than three times of measuring staff diameter.
5. the measurements of form and position deviation device according to any one of claims 1 to 4 based on revolution axle center, which is characterized in that
The dial gauge is digital display type dial gauge, and digital display type dial gauge is connected with external-connection displayer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821563630.XU CN208780059U (en) | 2018-09-26 | 2018-09-26 | A kind of measurements of form and position deviation device based on revolution axle center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821563630.XU CN208780059U (en) | 2018-09-26 | 2018-09-26 | A kind of measurements of form and position deviation device based on revolution axle center |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208780059U true CN208780059U (en) | 2019-04-23 |
Family
ID=66162397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821563630.XU Expired - Fee Related CN208780059U (en) | 2018-09-26 | 2018-09-26 | A kind of measurements of form and position deviation device based on revolution axle center |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208780059U (en) |
-
2018
- 2018-09-26 CN CN201821563630.XU patent/CN208780059U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190423 Termination date: 20190926 |