CN107449598A - Measurement apparatus and needle-valve body flow measurement device - Google Patents
Measurement apparatus and needle-valve body flow measurement device Download PDFInfo
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- CN107449598A CN107449598A CN201710791727.XA CN201710791727A CN107449598A CN 107449598 A CN107449598 A CN 107449598A CN 201710791727 A CN201710791727 A CN 201710791727A CN 107449598 A CN107449598 A CN 107449598A
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- 238000005259 measurement Methods 0.000 title claims abstract description 97
- 230000007246 mechanism Effects 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims description 24
- 238000009434 installation Methods 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 2
- 230000004044 response Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 208000004350 Strabismus Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- A Measuring Device Byusing Mechanical Method (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The present invention provides a kind of measurement apparatus that can be quickly accomplished measurement and needle-valve body flow measurement device.The measurement apparatus of the present invention, including measuring unit (1), the measuring unit (1) have rotary drive mechanism (11) and measuring mechanism (12), and the rotary drive mechanism (11) has：Pair of workpieces seat (112A, 112B), the workpiece (W) can be placed thereon；Supporting member (111), the workseat are configured on the supporting member；Rotary drive mechanism (113), it drives the supporting member to rotate, the workseat is set to switch between the measurement position that can be picked and placeed the discharge position up and down of the workpiece (W) by the workpiece handling unit (5) and can be measured by measuring mechanism (12) to the workpiece, when the discharge position up and down, the opposing party is located at measurement position in an orientation in the pair of workseat.
Description
Technical field
The present invention relates to a kind of measurement apparatus and the needle-valve body flow measurement device that flow measurement is carried out to needle-valve body.
Background technology
How promptly workpiece to be measured is technical need all the time.
The content of the invention
In view of this, it is an object of the present invention to provide a kind of measurement apparatus and pin that can be quickly accomplished measurement
Valve body flow measurement device.
To reach above-mentioned purpose, the present invention adopts the following technical scheme that.In the narration of following technical scheme, corresponding
The reference in embodiment is with the addition of in bracket behind structural element, this be for the ease of understanding technical scheme and
Addition, the implication being not equal with the structural element before it, the limitation to the scope of technical scheme is not formed.
The measurement apparatus of the present invention, including：Feeding is with feed bin (3), wherein depositing workpiece to be detected (W)；Workpiece handling
Unit (5), it is used to carry the workpiece (W)；Measuring unit (1), the workpiece handling unit (5) is by the feeding feed bin
(3) workpiece (W) in, which is carried, gives the measuring unit (1), and the workpiece (W) is measured by the measuring unit (1)；Blanking is used
Feed bin (4), the workpiece (W) after being measured by the measuring unit (1) are carried to the blanking materials by workpiece handling unit (5)
Storehouse (4), the measuring unit (1) have rotary drive mechanism (11) and measuring mechanism (12), the rotary drive mechanism (11)
Have：Pair of workpieces seat (112A, 112B), the workpiece (W) can be placed thereon；Supporting member (111), the workseat
(112A, 112B) is configured on the supporting member (111)；Rotary drive mechanism (113), it drives the supporting member (111)
Rotate, make the workseat (112,112B) that the workpiece (W) loading and unloading can picked and placeed by the workpiece handling unit (5)
Position and can be by switching between measurement position that measuring mechanism (12) measure to the workpiece, in the pair of workseat
When the discharge position up and down, the opposing party is located at measurement position in an orientation in (112A, 112B).
Because the orientation in pair of workpieces seat (112A, 112B) is when the discharge position up and down, the opposing party is positioned at measurement
Position, thus, it is possible to using the time of measurement pick and place the action of workpiece, the time can be saved, make whole measurement action fast
Complete fastly.
It is of the invention preferred, in addition to number information scanning element (2), the workpiece after measuring unit (1) measurement
The number information scanning element (2) is provided to, the numbering that the workpiece (W) is scanned by the number information scanning element (2) is believed
Breath, the workpiece (W) after being scanned by the number information scanning element (2) are carried to institute by the workpiece handling unit (5)
State blanking feed bin (4).In this way, scanning can be numbered for each workpiece, make its numbering corresponding with measurement result, favorably
In high-precision assembling.
Of the invention preferred, the number information scanning element is two-dimensional code scanning unit (2).
Of the invention preferred, the workpiece handling unit is that three coordinates move material unit (5).Three coordinate moves material unit (5)
Can have：1st guide rail, it extends along the 1st direction in horizontal direction；A pair of the 2nd guide rails, are configured at the 1st guide rail both ends
And extend along the 2nd direction in horizontal direction, the 2nd direction is perpendicular to the 1st direction, and the 1st guide rail is along institute
State the movement of the 2nd guide rail；Upper lower drive mechanism, it is installed on the 1st guide rail, is moved along the 1st guide rail；Manipulator
(51), it is installed on the upper lower drive mechanism.
Of the invention preferred, the feeding is configured in blanking feed bin (4) and the measuring unit (1) with feed bin (3)
Between.In this way, it can be saved actuation time along band feeding, furthermore achieved that the rapid of measurement during handling unit blanking backhaul
Change.
Of the invention preferred, the feeding is general with feed bin (3) and blanking feed bin (4) structure.
Of the invention preferred, the feeding is drawer type storage hopper with feed bin (3) and the blanking with feed bin (4).
It is of the invention preferably, in addition to cover the feeding feed bin (3), workpiece handling unit (5), measuring unit (1), under
The safe cage (101) of material feed bin (4), the installation cage (101) is in feeding described in face feed bin (3) and the blanking
There is outwards open opening portion (101a) with the position of feed bin (4).It so, it is possible easily to pick and place magazine.
Of the invention preferred, the measuring unit (1) also has lifting body (13), and the measuring mechanism (12) has pressure head
(123), the lifting body (13) will jack up positioned at the workseat of the measurement position, be clamped with the pressure head (123)
The workpiece on the workseat.
The present invention can be made up of the needle-valve body flow measurement device for measuring needle-valve body flow any of the above-described structure, on
It is needle-valve body airflow measurement unit to state measuring unit.
Brief description of the drawings
Fig. 1 is the oblique view of the needle-valve body flow measurement device in embodiment；
Fig. 2 is the oblique view of another angle of needle-valve body flow measurement device；
Fig. 3 is the top view of needle-valve body flow measurement device；
Fig. 4 is the front view of needle-valve body flow measurement device；
Fig. 5 is the left view of needle-valve body flow measurement device；
Fig. 6 be embodiment in needle-valve body flow measurement device 100 possessed by measuring unit front view；
Fig. 7 is the top view of above-mentioned measuring unit；
Fig. 8 is the left view of above-mentioned measuring unit；
Fig. 9 be present embodiment in needle-valve body flow measurement device possessed by two-dimensional code scanning unit oblique view；
Figure 10 is the oblique view of another angle of two-dimensional code scanning unit；
Figure 11 is the front view of two-dimensional code scanning unit；
Figure 12 is the top view of two-dimensional code scanning unit；
Figure 13 is the left view of two-dimensional code scanning unit.
Embodiment
The embodiment of the present invention is illustrated with reference to the accompanying drawings.
Fig. 1 is the oblique view of the needle-valve body flow measurement device 100 in present embodiment；Fig. 2 is the oblique of its another angle
View, after Fig. 2, eliminate oil module；Fig. 3 is top view；Fig. 4 is front view；Fig. 5 is left view.In Fig. 1~Fig. 5
Defined in all around above-below direction.
Fig. 6 be present embodiment in needle-valve body flow measurement device 100 possessed by measuring unit front view；Fig. 7
For top view；Fig. 8 is left view.
Fig. 9 be present embodiment in needle-valve body flow measurement device 100 possessed by two-dimensional code scanning unit strabismus
Figure；Figure 10 is the oblique view of another angle；Figure 11 is front view；Figure 12 is top view；Figure 13 is left view.
As shown in Fig. 1~5, the needle-valve body flow measurement device in present embodiment (can also be referred to as flow measurement sometimes
Device, measurement apparatus) 100 traffic conditions for measuring the needle-valve body W as workpiece, it has frame 10, and frame 10 has
The workbench of horizontal arrangement, needle-valve body flow measurement device 100 is configured with airflow measurement unit 1 on the table, Quick Response Code is swept
Unit 2, multiple feed bins (magazine) 3,4 are retouched, in airflow measurement unit 1, two-dimensional code scanning unit 2, multiple feed bins (magazine) 3,4
Top is configured with three coordinates and moves material unit 5.It is provided with frame 10 and covers airflow measurement unit 1, two-dimensional code scanning unit 2, material
The coordinate of storehouse (magazine) 3,4, three moves the cage 101 of material unit 5, is provided with the right hand external of cage 101 as control unit
Computer 6.
<Safe cage>
As shown in Fig. 1~5, cage 101 is tower structure, is provided with clear glass thereon, to facilitate observation.In addition,
In cage 101, the door that can be opened and closed at least is provided with left side and front side.Measurement apparatus 100 is automatically into guarantor when door is opened
Shield state, measurement starting switch is invalid, and has alarm lamp 102 to prompt.In the lower section of the door of front side, (do not have provided with outside opening
Have installation glass) opening portion 101a (Fig. 4).Feed bin 3,4 in present embodiment is drawer type, and magazine therein is detachable
Under, opening portion 101a is faced before and after the position of feed bin 3,4, can be pulled out or be pushed home into via opening portion 101a, just
Workpiece is picked and placeed in whole box.
<Airflow measurement unit (measuring unit)>
As shown in Figure 6 to 8, airflow measurement unit 1 has for the mechanism in rotary moving 11 of travelling workpiece and to workpiece
The measuring mechanism 12 measured.
Mechanism 11 in rotary moving has the rotating disk 111 of horizontal arrangement with configuring below the rotating disk 111, driving rotating disk 111
The rotary cylinder (rotary drive mechanism) 113 of rotation.Workpiece can be placed for a pair and with can be relative to by being configured with rotating disk 111
The rotation of workseat 112A, 112B that the mode that rotating disk 111 moves up and down configures, workseat 112A and 112B across rotating disk 111
Center is oppositely disposed (180 ° of angles).
The driving rotating disk 111 of rotary cylinder 113 rotates once, workseat 112A and 112B transpositions.In figure shown in 112A
Workseat is located at upper and lower discharge position, and workseat shown in 112B is located at measurement position.In upper and lower discharge position, workseat 112A, 112B
On can pick and place workpiece.
As shown in Fig. 6, Fig. 8, airflow measurement unit 1 also has jacking gas of the configuration below the measurement position of rotating disk 111
Cylinder 13 (lifting body), jacking cylinder 13 will jack upwards positioned at the workseat 112A or 112B of measurement position, with measuring mechanism
12 following pressure heads 123 are by Workpiece clamping, to measure.
Measuring mechanism 12 has pressure head 123 of the configuration above the measurement position of rotating disk 11, with the workseat jacked
112A or 112B clamps workpiece.In addition, measuring mechanism 12 also has flowmeter 121, measurement with magnetic valve 122, cylinder electromagnetism
Valve 124, needle-valve body liquid flow measurement mechanism 125.
<Two-dimensional code scanning unit>
Workpiece after airflow measurement unit 1 measures sends two-dimensional code scanning unit 2 to.
As shown in Fig. 9~Figure 13, two-dimensional code scanning unit 2 has code reader 21, manipulator (band cylinder) 22, rotary cylinder
23rd, cylinder 24, electric rotating machine 25, movable cylinder 26, moving guide rail 27, workpiece delivery platform 28 are moved up and down.
Pass through manipulator (with cylinder) 22, rotary cylinder 23, the shift unit and electric rotating for moving up and down the composition of cylinder 24
The rotational positioning unit interoperation that machine 25, movable cylinder 26, moving guide rail 27, workpiece delivery platform 28 are formed, by workpiece W
Move to scan components 21, read workpiece 2 D code information, with measurement data real time correlation and storing.
<Feed bin>
As shown in Figure 1 to 4, being arranged in present embodiment along left and right directions has 6 feed bins, and it is included positioned at a left side
Side is close to two feed bins 3 that measuring unit 1 and two-dimensional code scanning unit 2 configure and 4 feed bins 4 positioned at right side.Feed bin 3 is upper
Material feed bin, i.e., three following coordinates move material unit 5 and take workpiece from feed bin 3, send measuring unit 1 to, and feed bin 4 is used for blanking
Feed bin, i.e. three coordinates move the transmission feed hopper of the workpiece after material unit 5 measures measuring unit 1, two-dimensional code scanning unit 2 scans
4.Feed bin 4 has 4, under being surpassed respectively according to the different workpiece of the measurement result of measuring unit 1 storage, including flow under poor, flow
Poor, super poor four groups of flow in difference, flow.
<Three coordinates move material unit>
As shown in Fig. 1~5, three coordinates move material unit 5 have manipulator 51, a pair of movable electric cylinders (the 1st guide rail) 52,
Move left and right electric cylinders (the 2nd guide rail) 53, movable servomotor 54, move left and right servomotor 55, the connection of left and right extension
Axle 56, move up and down cylinder (upper lower drive mechanism) 57.
Move left and right electric cylinders 53 along left and right directions to extend, a pair of movable electric cylinders 52 configure and moving left and right electric cylinders 53
Left and right ends, respectively along fore-and-aft direction extend.Manipulator 51 is connected to by moving up and down cylinder 57 and moves left and right electric cylinders
On 52.The movable driving of servomotor 54 moves left and right electric cylinders 53 and moved along (the 2nd direction) before and after movable electric cylinders 52,
And then driving mechanical hand 51 is movable.Move left and right the driving of servomotor 55 and move up and down cylinder 57 along moving left and right electric cylinders
53 bearing of trend (the 1st direction) moves left and right, and then driving mechanical hand moves left and right.Move up and down the driving manipulator of cylinder 57
51 move up and down.In this way, manipulator 51 can realize that three coordinates (three-dimensional) are mobile.
<Action>
The action to the needle-valve body flow measurement device 100 of present embodiment illustrates below.
Workpiece W is placed on upper material position (feed bin 3) by the whole box of operator, and drawer type storage hopper unit has sensor sensing feed bin to arrive
Whether is position, and when finding feed bin in place, measurement (startup) button just can be used (just effectively).In order to ensure that operator grasps safely
Make, there is provided safe gate cell (101), safety door is opened, and unit automatic forced is shut down.Operator presses measurement button and (not marked
Show), three coordinates move the automatic workpiece feeding position (112A) that workpiece is moved to mechanism 11 in rotary moving one by one of material component 5, rotation
Travel mechanism 11, which automatically rotates workpiece W to (112B) among jacking component 13 and measurement assembly 12, the jacking band of component 13, to start building
Part moves up, and is fixed workpiece.
Then, school pump oil passes through the circulating filtration of oil module 9, (is not all schemed by high-pressure oil feed unit and voltage regulation unit
Show), measurement assembly W is transported to, by intelligent control unit 6, oil pressure is reached setting value, and by the oil of certain pressure through excessively stream
Gauge 121 is conveyed to needle-valve body liquid flow measurement mechanism 125, and unit automatic measurement simultaneously stores workpiece calibration data.
After being measured, mechanism 11 in rotary moving rotates workpiece W to workpiece feeding position, then by displaceable member (22,
23rd, 24), rotational positioning component (25,26,27,28) interoperation, workpiece W is moved into scan components 21, reads workpiece Quick Response Code
Information, with measurement data real time correlation and storing.
It is grouped automatically (on poor, flow surpasses on poor, flow under poor, flow under surpassing comprising flow according to setting range needle-valve body W
Poor four groups), three coordinates move material component 5 and workpiece W are moved into blanking, sub-material position specified location automatically, take when upper material position workpiece or
Blanking, sub-material position magazine are piled, and unit is automatically reminded to operator and takes magazine away.To improve measurement efficiency, finite element rotation movement
Mechanism 11 drives two stations alternately to measure.
Using present embodiment, such as following technique effect can be obtained.
A, high efficiency, meets the needs of being less than 10 seconds/part
Manipulator takes out workpiece for measurement from charging tray, is put on rotating disk 111, and rotating disk 111 is turned the (measurement of measurement position
Position) measurement, at the same time, the workpiece measured produces, and manipulator takes workpiece away and is put into workpiece delivery seat (charging tray).
B. device precision checking is carried out automatically, and automatic monitoring device is abnormal
The settable time interval for carrying out device precision checking of operator or piece count interval, device take standard component automatically
Device is verified, if exceeding franchise, device autostop, waits operator's processing.If workpiece does not conform to continuously
Trellis state, then device take standard component to be tested automatically, note abnormalities, then alarm operator handle.
C. automatic charging and Quick Response Code identification
Operator every time can the box of feeding two (two feed bins 3), magazine space-time, automatic alarm prompting operator take empty material away
Box, place new magazine.The feeding from magazine of manipulator 51, is placed on rotating disk 111, and rotational workpieces W is measured and entered
Row Quick Response Code barcode scanning.Consider the convenience of replacing magazine, feed bin uses drawing and pulling type structure.
D. measurement data library management
The Quick Response Code of the data such as flow, pressure, temperature, time during automatic measurement and workpiece corresponds, using data
Library management, there is the functions such as inquiry, statistics, analysis.
E. automatic blanking
Automatic sorting blanking, group is 4 groups, corresponding to place 4 magazines.Respectively flow it is super under poor, flow under poor, flow
Upper poor, super poor four groups of flow.During blanking mechanical hands movement, servo unit Circular gratings and position switch constitute XY movement positions
Control, advanced bus driver Schema control robot movement is employed, ensure to pick and place the accurate of material 100%.
F. security protection
Device is configured with safe gate cell, when device is safeguarded and changes magazine, device all can automatically into guard mode, and
And alarm.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
In the above-described embodiment, the present invention is described by taking needle-valve body flow measurement as an example, however, the present invention
Go for the measurement of other workpiece, now according to the structure of measurement content adjustment measuring unit.
In the above-described embodiment, as workpiece number information scanning element, carried out by taking two-dimensional code scanning unit 2 as an example
Illustrate, but the present invention is not limited to record the number information of workpiece, such as bar code or digital number by Quick Response Code
Can, during digital number, corresponding image procossing mechanism is equipped with identiflication number numeral.
Alternatively, it is also possible to omit the number information scanning element, after three coordinates shifting material unit 5 measures measuring unit 1
Workpiece is directly placed into the feed bin 4 of corresponding blanking, that is, the workpiece after measuring only is divided into four groups, does not remember for each workpiece
Record measurement result.
In the above-described embodiment, as supporting workseat, the supporting member of rotational workpieces, with discoid rotating disk
It is illustrated exemplified by 111, however, its shape is not particularly limited, can be long plate shape.
In addition, in the above-described embodiment, provided with two workseats 112A, 112B, however, the present invention is not limited thereto,
Two, four etc. can be set up, now, guarantee has another workseat while wherein having a workseat to go to measurement position
Discharge position up and down is gone to, is not now that 180 ° of configurations also may be used between two workseats from the point of view of this viewpoint.
In addition, as the workpiece handling unit for carrying workpiece, material unit 5 is moved exemplified with three coordinates, however, the present invention is simultaneously
Not limited to this, can be the handling unit of other structures.
Claims (11)
- A kind of 1. measurement apparatus, it is characterised in thatIncluding：Feeding is with feed bin (3), wherein depositing workpiece to be detected (W)；Workpiece handling unit (5), it is used to carry the workpiece (W)；The feeding is carried and gives the measurement by measuring unit (1), the workpiece handling unit (5) with the workpiece (W) in feed bin (3) Unit (1), the workpiece (W) is measured by the measuring unit (1)；With feed bin (4), the workpiece (W) after being measured by the measuring unit (1) is carried to by workpiece handling unit (5) for blanking The blanking with feed bin (4),The measuring unit (1) has rotary drive mechanism (11) and measuring mechanism (12),The rotary drive mechanism (11) has：Pair of workpieces seat (112A, 112B), the workpiece (W) can be placed thereon；Supporting member (111), the workseat (112A, 112B) are configured on the supporting member (111)；Rotary drive mechanism (113), it drives the supporting member (111) to rotate, makes the workseat (112A, 112B) in energy It is enough by the workpiece handling unit (5) pick and place the discharge position up and down of the workpiece (W) with can be by measuring mechanism (12) to described Switch between the measurement position that workpiece measures,When the discharge position up and down, the opposing party is positioned at measurement position in an orientation in the pair of workseat (112A, 112B) Put.
- 2. measurement apparatus according to claim 1, it is characterised in thatAlso include number information scanning element (2), the workpiece after measuring unit (1) measurement is provided to numbering letter Scanning element (2) is ceased, the number information of the workpiece (W) is scanned by the number information scanning element (2), by the number information The workpiece (W) after scanning element (2) scanning is carried to the blanking feed bin (4) by the workpiece handling unit (5).
- 3. measurement apparatus according to claim 2, it is characterised in that the number information scanning element is two-dimensional code scanning Unit (2).
- 4. measurement apparatus according to claim 1, it is characterised in that the workpiece handling unit is that three coordinates move material unit (5)。
- 5. measurement apparatus according to claim 4, it is characterised in thatThree coordinate, which moves material unit (5), to be had：1st guide rail, it extends along the 1st direction in horizontal direction；A pair of the 2nd guide rails, configure at the 1st guide rail both ends and extend along the 2nd direction in horizontal direction, the 2nd direction is hung down Directly moved in the 1st direction, the 1st guide rail along the 2nd guide rail；Upper lower drive mechanism, it is installed on the 1st guide rail, is moved along the 1st guide rail；Manipulator (51), it is installed on the upper lower drive mechanism.
- 6. according to measurement apparatus according to any one of claims 1 to 5, it is characterised in that the feeding is configured with feed bin (3) In the blanking between feed bin (4) and the measuring unit (1).
- 7. according to measurement apparatus according to any one of claims 1 to 5, it is characterised in that the feeding feed bin (3) and institute It is general to state blanking feed bin (4) structure.
- 8. according to measurement apparatus according to any one of claims 1 to 5, it is characterised in that the feeding feed bin (3) and institute It is drawer type storage hopper that blanking, which is stated, with feed bin (4).
- 9. measurement apparatus according to claim 8, it is characterised in that also include covering the feeding feed bin (3), workpiece Handling unit (5), measuring unit (1), the safe cage (101) of blanking feed bin (4), the installation cage (101) is in face The feeding has outwards open opening portion (101a) with the position of feed bin (3) and blanking feed bin (4).
- 10. according to measurement apparatus according to any one of claims 1 to 5, it is characterised in thatThe measuring unit (1) also has lifting body (13),The measuring mechanism (12) has pressure head (123),The lifting body (13) will jack up positioned at the workseat of the measurement position, with the pressure head (123) clamping position In the workpiece on the workseat.
- 11. according to measurement apparatus according to any one of claims 1 to 5, it is characterised in that be to be used to measure needle-valve body flow Needle-valve body flow measurement device, the measuring unit is airflow measurement unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791727.XA CN107449598B (en) | 2017-09-05 | 2017-09-05 | Measuring device and needle valve flow measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791727.XA CN107449598B (en) | 2017-09-05 | 2017-09-05 | Measuring device and needle valve flow measuring device |
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| CN107449598B CN107449598B (en) | 2024-03-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112834206A (en) * | 2021-01-06 | 2021-05-25 | 芜湖优能自动化设备有限公司 | Full-automatic pressure regulating test equipment of pressure valve |
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