CN106089843A - A kind of hands hydraulic-pneumatic control device with interlock function - Google Patents
A kind of hands hydraulic-pneumatic control device with interlock function Download PDFInfo
- Publication number
- CN106089843A CN106089843A CN201610598466.5A CN201610598466A CN106089843A CN 106089843 A CN106089843 A CN 106089843A CN 201610598466 A CN201610598466 A CN 201610598466A CN 106089843 A CN106089843 A CN 106089843A
- Authority
- CN
- China
- Prior art keywords
- piston rod
- screw
- pneumatic control
- swivel nut
- interlock function
- Prior art date
- 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.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
- F15B2215/30—Constructional details thereof
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The present invention provides a kind of hands hydraulic-pneumatic control device with interlock function, including hand screw, piston rod, slip swivel nut, little gear, linkage screw, described hand screw one end is through connecting housing and fixing, the other end is processed into square pole and inserts in piston rod, match with the square inner bore of slip swivel nut, slip swivel nut is socketed on square pole, described piston rod inner is screwed hole, match with external screw thread on slip swivel nut, the end of piston rod is connected with linked block, described linkage screw is horizontally set on the side connecting housing, with bonded between linkage screw one end and little gear, the centre of linkage screw is thread segment, by being then passed through linked block after screw thread socket air valve block on thread segment, described little gear is meshed with the gear on the handwheel of pneumatic control valve.Apparatus of the present invention integrate manually, surge, pneumatic control, it is achieved the interlock function of hands hydraulic control system and pneumatic control, have compact conformation, installation dimension is little, interlock the features such as reliable and secure.
Description
Technical field
The invention belongs to manually, surge, pneumatic control field, be specifically related to a kind of hands hydraulic-pneumatic control with interlock function
Device.
Background technology
Current manual, surge, the most function singleness of air control unit, a kind of control mode can only be realized, at needs
Multiple control modes is necessary for using multiple device when of coordinating control equipment together, coordinate control difficulty big and there is safety
Hidden danger.
Summary of the invention
The purpose of the present invention is contemplated to overcome above-mentioned weak point of the prior art, and the one provided has interlocking
The hands hydraulic-pneumatic control device of function, this device integrates manually, surges, pneumatic control, it is achieved hands hydraulic control system and pneumatic control
Interlock function, there is compact conformation, installation dimension is little, interlock the features such as reliable and secure.
The present invention solves that its technical problem the technical scheme is that a kind of hands hydraulic-pneumatic control dress with interlock function
Put, including hand screw, connect housing, linked block, scale frame, oil cylinder seat, piston rod, end cap, gland, back-up ring, slip swivel nut,
Little gear, linkage screw, air valve block, pneumatic control valve.
Described hand screw one end is through connecting housing and fixing, and the other end inserts in piston rod, is processed into square pole and makees
For guide rail, matching with the square inner bore of slip swivel nut, slip swivel nut is socketed on square pole, and slip swivel nut can be enclosed within guide rail
Move in section.Described hand screw is loading onto slip swivel nut rearward end installation back-up ring, the active strokes of limit slippage swivel nut, prevents
It departs from hand screw.
The piston of described piston rod is positioned in the middle part of piston rod, described piston rod inner be hollow and process female thread with
Described slip swivel nut external screw thread matches, and the end of piston rod is threaded connection with linked block, and linked block passes through with scale frame
Screw connects, and drives scale frame to move the when that described piston rod moving, by the position of scale frame instruction piston rod.Meanwhile,
Due to the restriction of linked block Yu scale frame, piston rod can only move axially and i.e. stretch out or retract, and cannot follow slip swivel nut one
Rise and rotate.
Described linkage screw is arranged on the side connecting housing, with bonded between linkage screw one end and little gear, little
Gear is respectively provided on two sides with the copper sheathing and locking nut preventing it from moving, and the centre of linkage screw is thread segment, logical on thread segment
Being then passed through linked block after crossing screw thread socket air valve block, air valve block embeds in the chute connected on housing, described little gear with
Gear on the handwheel of pneumatic control valve is meshed.The external screw thread of described linkage screw matches with air valve block female thread.
In technique scheme, described oil cylinder seat is provided with into, oil return opening, and oil cylinder seat, end cap and gland constitute an envelope
The oil cylinder housing closed, piston rod moves in closing cylinder shell body, its stroke and slip swivel nut may move on hand screw
Stroke is identical.
In technique scheme, described linked block having two holes in the horizontal direction, one is screwed hole, with described
Piston rod end external screw thread coordinates；One is through hole, and aperture is more than the external diameter of the thread segment of described linkage screw.
In technique scheme, described pneumatic control valve includes the support of handwheel, screw rod, valve, elevating lever, spool, copper valve
Body and valve support, screw rod one end is through fixing with nut after handwheel, and the screw rod other end, by being threaded in the middle of elevating lever, rises
The other end of fall bar processes T-slot fixed spool, and all there is the nipple for accessing gas circuit at the two ends of copper valve body.By rotation
Change hands wheel and drive elevating lever and valve core movement, control closedown and the unlatching of pneumatic circuit.Simultaneously the gear of handwheel be arranged on connection
Pinion fits on dynamic screw rod, drives linkage screw to rotate.Original state lower air valve block contacts with linked block, mutually limits
System, only after a segment distance removed by a part, another part could move, thus realization is manual, it is mutual with pneumatic to surge
Lock and sequential control.
In technique scheme, by location shaft bar, location bar, described location are installed in the bottom connecting housing
Bar one end processes arc groove, and in fork-shaped, the location bar other end is equipped with fixing back-up ring, between fixing back-up ring and location shaft bar
Being provided with compression spring, piston rod is provided with and positions the locating slot that bar matches.Can be by when positioning the when that bar snapping in locating slot
Whole device pins, and hand screw and piston rod can not move.
In technique scheme, when piston rod is fully retracted pneumatic control valve core closedown simultaneously, and
Under the state that the while that piston rod being fully extended, pneumatic control valve core fully opens, air valve block the most just contacts with linked block.
The present invention is coordinated by the screw thread between part, gear etc., it is achieved manually, surge, the conversion of pneumatic control mode
And interlock function.The rotation of hand screw is converted to piston rod by the cooperation of hand screw, slip swivel nut and piston rod three
Move axially or drive when piston rod moves axially slip swivel nut to move on hand screw, it is ensured that piston rod is normally transported
Dynamic, thus realize manual, the conversion of control mode of surging.Rotate handwheel and can control the keying of pneumatic control valve, handwheel simultaneously
Gear and the pinion fits being arranged in linkage screw, drive linkage screw rotate.Original state lower air valve block and company
Motion block contacts, and mutually limits, and only after a segment distance removed by a part, another part could move, thus realizes hands
Move, surge and pneumatic interlocking and sequential control.The sequence of movement of this device be " piston rod stretch out put in place-pneumatic valve core opens
Open-pneumatic valve core closedown-piston rod retraction ".
The invention has the beneficial effects as follows, by the cooperation between simple machine components, it is achieved manually, surge and pneumatic control
Interlock function between system and sequential control.This apparatus structure is the compactest, function is many, integrate multiple control modes,
Realize interlock function safe and reliable between control mode, and the sequentially-operating of control mode.
Accompanying drawing explanation
Fig. 1 is the forward sectional view (the fully extended state of piston rod) of the embodiment of the present invention.
Fig. 2 is the top view (the fully extended state of piston rod) of the embodiment of the present invention.
Fig. 3 is the sectional view (spool opening) of pneumatic control valve portion in the embodiment of the present invention.
In figure: 1 hand screw, 2 connect housing, 3 linked blocks, 4 scale frames, 5 oil cylinder seats, 6 piston rods, 7 ends
Lid, 8 glands, 9 back-up rings, 10 slip swivel nuts, 11 location bars, 12 little gears, 13 linkage screw, 14 air valve blocks, 15 handss
Wheel, 16 screw rods, 17 valves support, 18 elevating levers, 19 spools, 20 bronze medal valve bodies, 21 valve supports, and 22 location shaft bars, 23 is solid
Determine back-up ring.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment the invention will be further described.
As it is shown in figure 1, the embodiment of the present invention provides the hands hydraulic-pneumatic control device with interlock function, main part can be real
Now manually control piston rod extend and retract with the mode of surging.Hand screw 1 is fixed with screw rod back-up ring after connecting housing 2.
The shape being easy to manual rotary operation is processed in hand screw 1 one end, and the other end reprocesses out one section of square pole as guide rail, with
The square opening of slip swivel nut 10 matches.After slip swivel nut 10 is arranged on hand screw 1, back-up ring 9 is fixed on manual spiral shell
The end of bar 1, the movement travel of limit slippage swivel nut 10.Piston rod 6 internal for hollow and process female thread and slip spiral shell
The external screw thread of set 10 matches, piston rod 6 and linked block 3 by screw thread be spun on together with and be screwed, linked block 3 and scale
Frame 4 is connected by screw, and the mobile drive linked block 3 of piston rod 6 moves together with scale frame 4, be may indicate that by scale frame 4
The position of piston rod 6.Simultaneously as linked block 3 and the restriction of scale frame 4, piston rod 6 can only move axially and i.e. stretch out or contract
Return, and slip swivel nut 10 cannot be followed and rotate together.Oil cylinder seat 5 is provided with into, oil return opening, and its supporting seat frame part supports whole dress
Put.Oil cylinder seat 5, end cap 7 and gland 8 constitute an oil cylinder housing closed, and the piston of piston rod 6 moves in closing cylinder shell body
Dynamic.Hand screw 1, slip swivel nut 10 realize manual and control of surging conversion with cooperating of piston rod 6.Oil cylinder seat 5 enters,
After oil return opening accesses hydraulic system, hydraulic oil promotes piston rod 6 to move, and piston rod 6 drives slip swivel nut 10 together at manual spiral shell
Move left and right on bar 1, it is achieved surge and control extending and retracting of lower piston rod 6.The when of rotary manual screw rod 1, slip swivel nut
10 follow and rotate together, and in the case of piston rod can not rotate, slip swivel nut 10 rotates and moves axially, Jing Guoyi
After section idle stroke, the two ends of the immovable square pole i.e. arriving to hand screw of slip swivel nut 10, now it is rotated further manual spiral shell
Bar 1, the rotation of slip swivel nut 10 is converted to moving axially of piston rod 6, thus realize Non-follow control lower piston rod 6 stretch out and
Retract.
It addition, piston rod 6 is provided with locating slot.Location bar 11 is arranged on the end connecting housing 2 by location shaft bar 22
Portion, and it is directed at the locating slot of piston rod 6.Promote location bar 11 bottom, location bar 11 top circular arc concave surface through locating slot with
Hand screw 1 contacts, and now hand screw 1 and piston rod 6 all can not move, i.e. locking device；Position bar 11 when unclamping to exist
Setting back under the effect of spring, device can work.
As in figure 2 it is shown, main part also includes little gear 12, linkage screw 13, air valve block 14 etc..Little gear 12 and connection
With bonded between dynamic screw rod 13, little gear 12 both sides have copper sheathing and locking nut respectively, prevent little gear 12 from moving.Linkage spiral shell
Bar 13 intermediate thread section matches with air valve block 14 female thread, and through linked block 3, air valve block 14 is embedded on connection housing
Chute in, air valve block 14 can move horizontally along chute, and original state seasonal epidemic pathogens valve retainer 14 contacts with linked block 3.Connection
Dynamic screw rod 13 is placed on the side connecting housing 2, coordinates with pneumatic control valve realize interlocking manual, that surge with pneumatic control with
And sequential control.The handwheel 15 of pneumatic control valve engages with little gear 12, and rotation hand wheel 15 controls the opening and closing of pneumatic operated valve,
Drive linkage screw 13 to rotate simultaneously, thus be converted to air valve block 14 moving horizontally along chute.Due to air valve block 14 He
The mutual restriction of linked block 3, only after a segment distance removed by a part, another part could move, and i.e. realizes " piston rod
Stretch out put in place-pneumatic valve core unlatching-pneumatic valve core closedown-piston rod retract " sequential control.
As it is shown on figure 3, pneumatic control valve includes handwheel 15, screw rod 16, valve support 17, elevating lever 18, spool 19, copper valve body
20 and valve support 21 etc., copper valve body 20 is arranged on connection housing 2 by valve support 21.Pneumatic control valve utilizes between screw thread
Cooperation the rotary motion of handwheel 15 is converted to elevating lever 18 and the linear motion of spool 19, thus control the unlatching of pneumatic operated valve
And closedown, i.e. realize the control of gas circuit.Screw rod 16 one end is fixed with nut after handwheel 15, and the other end is by being threaded into liter
In the middle of fall bar 18.One end of elevating lever 18 processes T-slot and is easy to the installation of spool 19, it is ensured that elevating lever 18 can band movable valve plug 19
Proper motion.All there is nipple at the two ends of copper valve body 20 for accessing gas circuit.
The control operation principle of surging of the present invention is: under original state, piston rod 6 is retracted, the spool 19 of pneumatic control valve
In the closed position, when hydraulic oil enters from the oil-in of oil cylinder seat 5, promote piston rod 6 protruding, piston rod 6 drives even
Motion block 3, scale frame 4 move together with slip swivel nut 10, and scale frame 4 can indicate the position that piston rod 6 stretches out；When hydraulic oil is from oil
The oil return opening of cylinder seat 5 enters, and piston rod is retracted.The Non-follow control operation principle of the present invention is: rotary manual screw rod 1, slip spiral shell
Set 10 rotates while moving, when slip swivel nut 10 can not move after one section of idle stroke again on hand screw 1
Waiting, the rotary motion of slip swivel nut 10 is converted to the linear motion of piston rod 6, thus piston rod can stretch out or retract.This
Bright interlocking principle is: due to the mutual restriction of the gentle valve retainer of linked block 3 14, original state lower air valve block 14 is by linked block
3 block, and 15 turns of handwheel is motionless, and pneumatic operated valve can not be opened, and only when piston rod reaches, linked block 3 removes a segment distance, turns
Start to take turns 15 until air valve block 14 contacts with linked block 3 again when, the spool 19 of pneumatic control valve is just opened, it is achieved
Pneumatic control；Limiting the motion of linked block 3 due to air valve block 14 when of realizing pneumatic control, piston rod can not be retracted, this
Shi Shoudong, control of surging can not act on, and only close when spool 19, after air valve block 14 removes a segment distance, and manual, the side of surging
Formula could control piston rod and retract.
In sum, these are only presently preferred embodiments of the present invention, be not intended to limit protection scope of the present invention.
The present invention not only integrates manually, surges and pneumatic control mode, it is achieved the interlocking of control mode, and can also realize " living
Stopper rod stretch out put in place-pneumatic valve core unlatching-pneumatic valve core closedown-piston rod retract " sequential control.
Claims (6)
1. there is a hands hydraulic-pneumatic control device for interlock function, it is characterized in that: include hand screw, connect housing, linked block,
Scale frame, oil cylinder seat, piston rod, end cap, gland, back-up ring, slip swivel nut, little gear, linkage screw, air valve block, pneumatic control
Valve processed；Described hand screw one end is through connecting housing and fixing, and the other end inserts in piston rod, is processed into square pole, with cunning
The square inner bore of movable snail sleeve matches, and slip swivel nut is socketed on square pole, and back-up ring is fixed in square pole end, in described piston rod
Portion is screwed hole, matches with external screw thread on described slip swivel nut, and the end of piston rod is connected with linked block, linked block and scale
Frame is connected, and described linkage screw is horizontally set on the side connecting housing, with bonded between linkage screw one end and little gear,
Little gear is respectively provided on two sides with the copper sheathing and locking nut preventing it from moving, and the centre of linkage screw is thread segment, on thread segment
By being then passed through linked block after screw thread socket air valve block, air valve block embeds in the chute connected on housing, described little gear
It is meshed with the gear on the handwheel of pneumatic control valve.
The hands hydraulic-pneumatic control device with interlock function the most according to claim 1, is characterized in that: described oil cylinder seat is provided with
Enter, oil return opening, oil cylinder seat, end cap and gland constitute an oil cylinder housing closed, and piston rod moves in closing cylinder shell body,
Its stroke is identical with the slip swivel nut removable stroke on hand screw.
The hands hydraulic-pneumatic control device with interlock function the most according to claim 1, is characterized in that: on described linked block
Horizontal direction has two holes, and one is screwed hole, coordinates with described piston rod end external screw thread；One is through hole, and aperture is big
External diameter in the thread segment of described linkage screw.
The hands hydraulic-pneumatic control device with interlock function the most according to claim 1, is characterized in that: described pneumatic control valve
Including handwheel, screw rod, valve support, elevating lever, spool, copper valve body and valve support, screw rod one end is solid with nut after passing handwheel
Fixed, the screw rod other end is by being threaded in the middle of elevating lever, and the other end of elevating lever processes T-slot fixed spool, copper valve body
Two ends all have the nipple for accessing gas circuit.
The hands hydraulic-pneumatic control device with interlock function the most according to claim 1, is characterized in that: at the end connecting housing
Portion is provided with location bar by location shaft bar, and bar one end, described location processes arc groove, in fork-shaped, positions the bar other end
Equipped with fixing back-up ring, being provided with compression spring between fixing back-up ring and location shaft bar, piston rod is provided with and positions what bar matched
Locating slot.
The hands hydraulic-pneumatic control device with interlock function the most according to claim 1, is characterized in that: contract completely at piston rod
Return under the state that pneumatic control valve core is closed simultaneously, and the while that piston rod being fully extended, pneumatic control valve core fully opens
State under, air valve block the most just contacts with linked block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610598466.5A CN106089843B (en) | 2016-07-27 | 2016-07-27 | A kind of hand hydraulic-pneumatic control device with interlock function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610598466.5A CN106089843B (en) | 2016-07-27 | 2016-07-27 | A kind of hand hydraulic-pneumatic control device with interlock function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106089843A true CN106089843A (en) | 2016-11-09 |
| CN106089843B CN106089843B (en) | 2017-10-24 |
Family
ID=57448981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610598466.5A Expired - Fee Related CN106089843B (en) | 2016-07-27 | 2016-07-27 | A kind of hand hydraulic-pneumatic control device with interlock function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106089843B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752463A (en) * | 2019-03-06 | 2019-05-14 | 王俏 | Defects in Pressure Container detection device and its detection method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3214777A1 (en) * | 1982-04-21 | 1983-10-27 | Ernst 7996 Meckenbeuren Hunger | Single-acting pneumatic cylinder |
| CN2033873U (en) * | 1988-04-09 | 1989-03-08 | 朱兆坤 | Fluid control device |
| CN200961598Y (en) * | 2006-08-31 | 2007-10-17 | 江苏中显机械有限公司 | Parallel type electrohydraulic pusher |
| US20110089879A1 (en) * | 2008-06-03 | 2011-04-21 | Johannes Andrianus Maria Duits | Linear Actuator |
| CN204783926U (en) * | 2015-06-08 | 2015-11-18 | 浙江标盛阀门制造有限公司 | Cylinder with manual reset and automatic re -setting function |
| CN205876847U (en) * | 2016-07-27 | 2017-01-11 | 中国船舶重工集团公司第七一九研究所 | Hand liquid gas controlling means with interlock function |
-
2016
- 2016-07-27 CN CN201610598466.5A patent/CN106089843B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3214777A1 (en) * | 1982-04-21 | 1983-10-27 | Ernst 7996 Meckenbeuren Hunger | Single-acting pneumatic cylinder |
| CN2033873U (en) * | 1988-04-09 | 1989-03-08 | 朱兆坤 | Fluid control device |
| CN200961598Y (en) * | 2006-08-31 | 2007-10-17 | 江苏中显机械有限公司 | Parallel type electrohydraulic pusher |
| US20110089879A1 (en) * | 2008-06-03 | 2011-04-21 | Johannes Andrianus Maria Duits | Linear Actuator |
| CN204783926U (en) * | 2015-06-08 | 2015-11-18 | 浙江标盛阀门制造有限公司 | Cylinder with manual reset and automatic re -setting function |
| CN205876847U (en) * | 2016-07-27 | 2017-01-11 | 中国船舶重工集团公司第七一九研究所 | Hand liquid gas controlling means with interlock function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752463A (en) * | 2019-03-06 | 2019-05-14 | 王俏 | Defects in Pressure Container detection device and its detection method |
| CN109752463B (en) * | 2019-03-06 | 2021-04-30 | 山东商务职业学院 | Pressure container defect detection device and detection method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106089843B (en) | 2017-10-24 |
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Granted publication date: 20171024 Termination date: 20200727 |