CN106271529B - Rubber soft joint fluid pressure type fast assembling-disassembling equipment - Google Patents
Rubber soft joint fluid pressure type fast assembling-disassembling equipment Download PDFInfo
- Publication number
- CN106271529B CN106271529B CN201610813326.5A CN201610813326A CN106271529B CN 106271529 B CN106271529 B CN 106271529B CN 201610813326 A CN201610813326 A CN 201610813326A CN 106271529 B CN106271529 B CN 106271529B
- Authority
- CN
- China
- Prior art keywords
- ring flange
- opening
- frame
- fluid pressure
- pressure type
- 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.)
- Expired - Fee Related
Links
- 229920001971 elastomer Polymers 0.000 title claims abstract description 61
- 239000012530 fluid Substances 0.000 title claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 238000009434 installation Methods 0.000 claims abstract description 11
- 239000003921 oil Substances 0.000 claims description 8
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/025—For detaching only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
Abstract
The present invention relates to a kind of rubber soft joint fluid pressure type fast assembling-disassembling equipment, it includes frame and installed in frame top and the workbench that laterally sets, it is characterized in that opening is set on the workbench, hydraulic jack is vertically installed at opening location directly below in frame, hydraulic station for driving hydraulic jack to act is installed in frame, the piston rod top of hydraulic jack is provided with wire loop, opening position on workbench in opening is provided with ring flange installation detent mechanism, is provided with ring flange dismounting detent mechanism on workbench in the wherein side of opening.The present invention has the advantages of simple in construction, easy to use, rapid operation and operating efficiency are high.
Description
Technical field
The present invention relates to rubber soft joint field, specifically a kind of rubber soft joint fluid pressure type fast assembling-disassembling equipment.
Background technology
Rubber soft joint be also known as rubber tube connecting hose, flexible rubber joint, rubber be flexible coupling, bending rubber joint, height
Elastomer connector, rubber absorbers etc. is pressed, it mainly includes rubber tube and is set in the ring flange of rubber tube terminal, and the two of rubber tube
Individual end sets annular snap edge respectively, and ring flange is set in the end of rubber tube and by annular snap along spacing.Rubber soft joint exists
Play flexible connection on metallic conduit, be a kind of high resiliency, high-air-tightness, the pipe joint of resistance to medium and against weather,
Its overall anti-seismic performance to pipeline and prevent from playing vital effect on pipe deforming.
Rubber tube in rubber soft joint make use of elasticity, high-air-tightness, resistance to medium, weatherability and the radiation hardness of rubber
Property the advantages that, and using the strong polyester cord oblique of high intensity, cold and hot stability with it is rubber combined after, by high pressure, high temperature
Mold cure forms.
Although rubber tube is flexible, it also has the annular snap of certain intensity and hardness, especially its end
Edge.The very tight of clamping is generally required in order to ensure the connectivity robustness of rubber soft joint, between rubber tube and ring flange, that is, is needed
Ring flange is tightly sleeved on rubber tube.Ring flange, which is socketed on rubber tube, needs that annular snap edge first is passed through into ring flange center
Hole, the size on annular snap edge is more than ring flange center hole and the intensity and hardness on annular snap edge are larger, allows annular snap edge to deform
And it is the work extremely wasted time and energy to pass through ring flange center hole, cause the assembling of both rubber tube and ring flange difficult, Gong Renlao
Fatigue resistance is big, and operating efficiency is low.In addition, the dismounting after ring flange assembles with rubber tube is also extremely difficult, just because of this, for rubber
The connecting hose of sebific duct damage, often abandons together with the ring flange at both ends, causes great waste.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of simple in construction, easy to use, rapid operation, operating efficiency are high
Rubber soft joint fluid pressure type fast assembling-disassembling equipment.
In order to solve the above technical problems, the rubber soft joint fluid pressure type fast assembling-disassembling equipment of the present invention includes frame and installation
The workbench set in frame top and laterally, it, which is structurally characterized in that on the workbench, sets opening, is being opened in frame
Hydraulic jack is vertically installed at mouth location directly below, the hydraulic station for driving hydraulic jack to act is installed in frame,
The piston rod top of hydraulic jack is provided with wire loop, and in the opening position of opening, to be provided with ring flange installation fixed on workbench
Position mechanism, ring flange dismounting detent mechanism is provided with workbench in the wherein side of opening.
Using said structure, when carrying out assembling work, detent mechanism is installed by ring flange using the ring flange of opening
It is laid in opening, rubber tube to be assembled is leant against to the side in ring flange center hole, now operates hydraulic jack and rise steel
Silk braid circle passes opening upwards, and is enclosed on the annular snap of end of rubber tube to be assembled along upper, then operates hydraulic jack and declines, profit
With wire loop by annular snap along pulling in flange center hole, hydraulic jack continues to decline, and drives wire loop drop-down, annular
Card simultaneously passes ring flange center hole along deforming, so as to complete the assembling of wherein one end, for the rubber tube other end and ring flange
Assembling, performs same operation；When carrying out dismounting operation, ring flange is positioned using ring flange dismounting detent mechanism,
Wire loop is set on rubber tube on the position of ring flange, operation hydraulic jack declines, and drives wire loop drop-down,
The annular snap of end of rubber tube is deviate from along stress deformation and finally from ring flange center hole, so as to complete to dismantle.It can be seen that whole behaviour
It is simple to make process, easy to operate using hydraulic jack, time saving and energy saving, operating efficiency is high.
The ring flange installation detent mechanism includes ring and is located at the annular shelves edge of opening border or including being located in opening
And internal diameter is more than the deep gouge of opening.Annular gear along or the effect of deep gouge be locating flange dish, avoid ring flange from producing displacement and shadow
Ring operation.
The ring flange installation detent mechanism also can be placed in annular shelves along the auxiliary positioning in interior or deep gouge including polylith
Plate, ladder hole of the macropore in upper, aperture under is offered on every block of auxiliary positioning plate, ring flange is laid in ladder hole
Ring flange of the macropore respectively with different size in macropore and on each auxiliary positioning plate is adapted, and each auxiliary positioning plate selects one and ring
Shape shelves edge or deep gouge coordinate.Because the specification of rubber soft joint is different with model, so that the thickness and flange of rubber tube
Disk it is of different sizes.Multiple auxiliary positioning plates are set, and the external diameter and the internal diameter on annular gear edge or deep gouge of each auxiliary positioning plate are mutually fitted
Should, by opening up various sizes of ladder hole, to match different size of ring flange so that equipment can apply to it is a variety of
The rubber soft joint of specifications and models, the versatility of equipment are stronger.
The frame higher slice is provided with multiple drawers for being used to place auxiliary positioning plate.Drawer is separately provided to be used to place
Auxiliary positioning plate, when specifically used, according to the specification of rubber soft joint to be assembled or to be removed, phase is directly selected from a drawer
The auxiliary positioning plate matched somebody with somebody, use is more convenient, while also efficiency avoids auxiliary positioning plate from arbitrarily abandoning, and helps to maintain ring
Border is clean and tidy.
The ring flange dismounting detent mechanism includes the locating slot for being arranged on opening side and vertically being inserted for ring flange.Profit
The vertical inserting of ring flange is realized with locating slot, ring flange is firmly stuck in locating slot when dismantling operation so as to convenient, tied
Structure is simple, easy to use.
The piston rod top of the hydraulic jack is rotatablely equipped with yoke plate, and the top of yoke plate opens up through hole, and wire loop connects
It is connected on through hole.Because wire loop is generally oblique loading, for force balance, hydraulic cylinder piston rod is avoided to bear excessively
Oblique load, therefore and yoke plate is set, so as to ensure the stability of power transmission, and hydraulic jack is played well protection make
With.
The electric oil pump that the hydraulic station includes rack-mounted hydraulic oil container, is connected by oil pipe with hydraulic oil container
Frame sidepiece is arranged on for control valve, control valve, frame sidepiece is also equipped with pump switch.Control valve uses hand-operated valve,
Hand-operated valve operation handle is arranged on frame sidepiece, convenient operation, and pump switch is used for the start and stop for controlling electric oil pump.
At least one locating dowel for being used for locating flange dish is vertically installed on the top surface of the workbench.To be assembled
Ring flange or rubber tube can be set in locating dowel temporarily, conveniently take and workbench can be kept clean and tidy.
In summary, the present invention has the advantages of simple in construction, easy to use, rapid operation and operating efficiency are high.
Brief description of the drawings
The present invention is described in further detail with reference to the accompanying drawings and detailed description：
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is structural representation when carrying out ring flange and rubber tube assembling using the present invention；
Fig. 3 is structural representation when carrying out ring flange and rubber tube dismounting using the present invention.
Embodiment
Referring to the drawings, rubber soft joint fluid pressure type fast assembling-disassembling equipment of the invention includes frame 1 and pushed up installed in frame 1
Portion and the workbench 2 laterally set, opening is set on workbench 2, vertically pacified at opening location directly below in frame
Equipped with hydraulic jack 3, the hydraulic station for driving hydraulic jack 3 to act is installed in frame 1, the piston rod 31 of hydraulic jack pushes up
Hold and wire loop 4 is installed, the opening position on workbench 2 in opening is provided with ring flange installation detent mechanism, workbench 2
On be provided with the wherein side of opening ring flange dismounting detent mechanism.Wherein, hydraulic station includes the hydraulic pressure being arranged in frame 1
Fuel tank 51, the electric oil pump 52 being connected by oil pipe with hydraulic oil container 51 and it is arranged on frame 1 for control valve 53, control valve 53
Sidepiece, the sidepiece of frame 1 are also equipped with pump switch 54.As illustrated, control valve 53 uses hand-operated valve, hand-operated valve operation handle peace
Mounted in the sidepiece of frame 1, convenient operation, pump switch 54 is used for the start and stop for controlling electric oil pump.
In said structure, as shown in Fig. 2 when carrying out assembling work, detent mechanism is installed using the ring flange of opening
Ring flange 8 is laid in opening, rubber tube 18 to be assembled is leant against to the side in ring flange center hole, now operates hydraulic oil
Cylinder 3 rises, and the piston rod 31 of hydraulic jack drives wire loop 4 to pass upwards and is open and is enclosed on the end of rubber tube 18 to be assembled
Then annular snap is operated hydraulic cylinder piston rod and declined, pulled annular snap in ring flange along 19 using wire loop 4 along 19
In heart hole, hydraulic cylinder piston rod continues to decline, and annular snap is deformed and passed in ring flange by the pulling force of wire loop along 19
Heart hole, so as to complete the assembling of wherein one end, the assembling for the other end of rubber tube 18 and ring flange 8, perform same operation
；As shown in figure 3, when carrying out dismounting operation, ring flange 8 is positioned using ring flange dismounting detent mechanism, by steel wire set
Circle 4 is set on rubber tube 18 on the position of ring flange 8, and operation hydraulic cylinder piston rod 31 declines, the end of rubber tube 18
Annular snap along 19 stress deformations and finally deviate from from ring flange center hole, so as to complete to dismantle.
Referring to the drawings, ring flange installation detent mechanism is located at the annular shelves of opening border along 6 or including being located at including ring
In opening and internal diameter is more than the deep gouge of opening, wherein, what is shown in accompanying drawing is annular gear along 6, and the structure of deep gouge is not shown, for
Deep gouge, expand equivalent to by the upper inner diameter of opening, that is, opening is up big and down small shoulder hole.Annular gear is along 6 or sinks
The effect of groove is locating flange dish 8, avoids ring flange 8 from producing displacement and influence to operate.Due to the specification and type of rubber soft joint
Number difference, so that the thickness of rubber tube and ring flange is of different sizes, annular gear is only applicable to a kind of chi along 6 or deep gouge
Very little larger ring flange, in order to increase the versatility of equipment, for the ring flange of other sizes, the present invention takes following scheme：
Ring flange installation detent mechanism also includes polylith and can be placed in auxiliary positioning plate 7 of the annular shelves along 6 or in deep gouge, every piece of auxiliary
Ladder hole 70 of the macropore in upper, aperture under is offered on location-plate 7, ring flange 8 is laid in the macropore of ladder hole 70
Ring flange 8 of the macropore respectively with different size on interior and each auxiliary positioning plate 7 is adapted, and each auxiliary positioning plate 7 selects one and ring
Shape shelves coordinate along 6 or deep gouge.Multiple auxiliary positioning plates 7 are set, and the external diameter of each auxiliary positioning plate 7 and annular gear are along 6 or deep gouge
Internal diameter is adapted, by opening up various sizes of ladder hole on each auxiliary positioning plate 7, to match different size of ring flange
8, so that equipment can apply to the rubber soft joint of plurality of specifications model, the versatility of equipment is stronger.It is each auxiliary for convenience
Help location-plate to place, avoid the occurrence of and arbitrarily abandon phenomenon, the higher slice of frame 1 is provided with multiple for placing auxiliary positioning plate 7
Drawer 9.
Referring to the drawings, ring flange dismounting detent mechanism includes being arranged on opening side and determined for what ring flange 8 vertically inserted
Position groove 10.When dismantling operation, the vertical inserting of ring flange is realized using locating slot 10, is determined so as to which ring flange is firmly stuck in by side
It is simple in construction in the groove of position, it is easy to use.
Referring to the drawings, the top of piston rod 31 of hydraulic jack is rotatablely equipped with yoke plate 32, and the top of yoke plate 32 opens up through hole,
Wire loop 4 is connected on through hole.As illustrated, no matter in assembling work or dismantling operation, wire loop is by oblique
To pulling force, for force balance and avoid hydraulic cylinder piston rod from bearing excessive oblique load, therefore and yoke plate is set, so as to
Ensure the stability of power transmission, and hydraulic jack is played a very good protection.
Referring to the drawings, at least one locating dowel for being used for locating flange dish 8 is vertically installed on the top surface of workbench 2
17.Ring flange to be assembled or rubber tube can be set in locating dowel temporarily, conveniently take and workbench can be kept clean and tidy.
The invention is not restricted to above-described embodiment.Those skilled in the art, the premise of protection scope of the present invention is not being departed from
Under, some change and modification can be done.Protection scope of the present invention should be defined by the claim of the present invention.
Claims (8)
1. a kind of rubber soft joint fluid pressure type fast assembling-disassembling equipment, including frame（1）With installed in frame（1）Top and laterally set
The workbench put（2）, it is characterized in that the workbench（2）Upper set is open, in frame at opening location directly below
Hydraulic jack vertically is installed（3）, frame（1）On be provided with for driving hydraulic jack（3）The hydraulic station of action, hydraulic jack
Piston rod（31）Top is provided with wire loop（4）, workbench（2）On opening opening position be provided with ring flange installation
Detent mechanism, workbench（2）On be provided with the wherein side of opening ring flange dismounting detent mechanism.
2. rubber soft joint fluid pressure type fast assembling-disassembling equipment as claimed in claim 1, it is characterized in that ring flange installation is fixed
Position mechanism includes the annular shelves edge that ring is located at opening border（6）Or it is more than the deep gouge of opening including being located at the upper and internal diameter that is open.
3. rubber soft joint fluid pressure type fast assembling-disassembling equipment as claimed in claim 2, it is characterized in that ring flange installation is fixed
Position mechanism also can be placed in annular shelves edge including polylith（6）Auxiliary positioning plate in interior or deep gouge（7）, every block of auxiliary positioning plate
（7）On offer ladder hole of the macropore in upper, aperture under（70）, ring flange（8）It is laid in ladder hole（70）It is big
In hole and each auxiliary positioning plate（7）On the macropore ring flange with different size respectively（8）It is adapted, each auxiliary positioning plate（7）
Select one and annular shelves edge（6）Or deep gouge coordinates.
4. rubber soft joint fluid pressure type fast assembling-disassembling equipment as claimed in claim 3, it is characterized in that the frame（1）Higher slice
It is provided with multiple for placing auxiliary positioning plate（7）Drawer（9）.
5. rubber soft joint fluid pressure type fast assembling-disassembling equipment as claimed in claim 1, it is characterized in that ring flange dismounting is fixed
Position mechanism includes being arranged on opening side and supplies ring flange（8）The locating slot vertically inserted（10）.
6. rubber soft joint fluid pressure type fast assembling-disassembling equipment as claimed in claim 1, it is characterized in that the work of the hydraulic jack
Stopper rod（31）Top is rotatablely equipped with yoke plate（32）, yoke plate（32）Top open up through hole, wire loop（4）It is connected to through hole
On.
7. rubber soft joint fluid pressure type fast assembling-disassembling equipment as claimed in claim 1, it is characterized in that the hydraulic station includes peace
Mounted in frame（1）On hydraulic oil container（51）, pass through oil pipe and hydraulic oil container（51）The electric oil pump of connection（52）And control valve
（53）, control valve（53）Installed in frame（1）Sidepiece, frame（1）Sidepiece is also equipped with pump switch（54）.
8. the rubber soft joint fluid pressure type fast assembling-disassembling equipment as any one of claim 1-7, it is characterized in that the work
Make platform（2）Top surface on be vertically provided with least one and be used for locating flange dish（8）Locating dowel（17）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610813326.5A CN106271529B (en) | 2016-09-10 | 2016-09-10 | Rubber soft joint fluid pressure type fast assembling-disassembling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610813326.5A CN106271529B (en) | 2016-09-10 | 2016-09-10 | Rubber soft joint fluid pressure type fast assembling-disassembling equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106271529A CN106271529A (en) | 2017-01-04 |
| CN106271529B true CN106271529B (en) | 2018-01-19 |
Family
ID=57710987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610813326.5A Expired - Fee Related CN106271529B (en) | 2016-09-10 | 2016-09-10 | Rubber soft joint fluid pressure type fast assembling-disassembling equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106271529B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110237997A (en) * | 2018-03-09 | 2019-09-17 | 辽宁维航基业科技有限公司 | A kind of Semiautomatic flange disk glue spreader and its application method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2031797A (en) * | 1931-02-25 | 1936-02-25 | Budd Wheel Co | Fixture for assembling rubber articulated joints |
| CN102501048A (en) * | 2011-10-13 | 2012-06-20 | 天津鹏翎胶管股份有限公司 | Rubber hose assembling equipment with rapid joint |
| CN103567961A (en) * | 2013-10-28 | 2014-02-12 | 奇瑞汽车股份有限公司 | Press fitting equipment and method for rubber ring of torsion damper |
| CN203863321U (en) * | 2014-06-03 | 2014-10-08 | 安庆市汇通汽车部件有限公司 | Rubber joint pressing machine for fender support |
| CN204277916U (en) * | 2014-11-10 | 2015-04-22 | 南京赛博宁减振器制造有限公司 | A kind of rubber shock absorber pressing mold |
| CN205254898U (en) * | 2015-12-24 | 2016-05-25 | 中车太原机车车辆有限公司 | Rubber shock absorber ware pressure equipment isolated plant |
| CN205342969U (en) * | 2015-12-15 | 2016-06-29 | 重庆溯联塑胶有限公司 | Plastic pipe coupling joint assembly fixture |
| CN205465939U (en) * | 2016-01-05 | 2016-08-17 | 天津鹏翎胶管股份有限公司 | Mechanism, rubber tube installation clamp frock and rubber tube and joint combination frock are opened in advance to clamp |
-
2016
- 2016-09-10 CN CN201610813326.5A patent/CN106271529B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2031797A (en) * | 1931-02-25 | 1936-02-25 | Budd Wheel Co | Fixture for assembling rubber articulated joints |
| CN102501048A (en) * | 2011-10-13 | 2012-06-20 | 天津鹏翎胶管股份有限公司 | Rubber hose assembling equipment with rapid joint |
| CN103567961A (en) * | 2013-10-28 | 2014-02-12 | 奇瑞汽车股份有限公司 | Press fitting equipment and method for rubber ring of torsion damper |
| CN203863321U (en) * | 2014-06-03 | 2014-10-08 | 安庆市汇通汽车部件有限公司 | Rubber joint pressing machine for fender support |
| CN204277916U (en) * | 2014-11-10 | 2015-04-22 | 南京赛博宁减振器制造有限公司 | A kind of rubber shock absorber pressing mold |
| CN205342969U (en) * | 2015-12-15 | 2016-06-29 | 重庆溯联塑胶有限公司 | Plastic pipe coupling joint assembly fixture |
| CN205254898U (en) * | 2015-12-24 | 2016-05-25 | 中车太原机车车辆有限公司 | Rubber shock absorber ware pressure equipment isolated plant |
| CN205465939U (en) * | 2016-01-05 | 2016-08-17 | 天津鹏翎胶管股份有限公司 | Mechanism, rubber tube installation clamp frock and rubber tube and joint combination frock are opened in advance to clamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106271529A (en) | 2017-01-04 |
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