CN107740894B - Quick-change connector of internal thread pipe - Google Patents
Quick-change connector of internal thread pipe Download PDFInfo
- Publication number
- CN107740894B CN107740894B CN201711118311.8A CN201711118311A CN107740894B CN 107740894 B CN107740894 B CN 107740894B CN 201711118311 A CN201711118311 A CN 201711118311A CN 107740894 B CN107740894 B CN 107740894B
- Authority
- CN
- China
- Prior art keywords
- locking
- sleeve
- quick
- lock
- claws
- 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.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/10—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using a rotary external sleeve or ring on one part
- F16L37/101—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using a rotary external sleeve or ring on one part in which the coupling is coaxial with the pipe
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/12—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls or other movable or insertable locking members
- F16L37/1235—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls or other movable or insertable locking members the connection taking place from inside the pipes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention provides a quick-change connector of an internal thread pipe, and belongs to the technical field of machinery. The quick-change connector solves the problems that an existing quick-change connector is not suitable for being connected with an internal thread pipe and is complex in structure. The quick-change connector of the internally threaded pipe comprises a cylindrical locking sleeve, wherein a cavity of the locking sleeve is inserted and movably connected with a cylindrical locking framework, the lower end of the locking framework is axially positioned in the locking sleeve, a plurality of locking claws are axially fixedly connected in the locking sleeve, the locking framework can drive the locking claws to synchronously approach or keep away from the axis of the locking sleeve, the other end of the locking framework is fixedly connected with a sealing end cover, the middle part of the sealing end cover is provided with a through hole for the locking claws to pass through, the outer ends of the locking claws are respectively provided with external threads, and the lower ends of the locking claws extend out of the sealing end cover. The quick-change connector of the internally threaded pipe has the advantages of being suitable for being connected with the internally threaded pipe and simple and compact in structure.
Description
Technical Field
The invention belongs to the technical field of machinery, and relates to a quick-change connector, in particular to a quick-change connector of an internal threaded pipe.
Background
At present, a water pump joint is arranged at a water outlet of a water pump to realize connection between the water pump and external equipment, so that the problem of connection trouble caused by mismatching of the size and shape or threads at the interface of the water pump and the external equipment is solved. The joint of the water pump water outlet and the water pump joint is generally fixed by adopting threaded connection, and the joint is further sealed. When the angle of the water pump joint is required to be adjusted, the sealing of the joint is necessarily broken, and the joint is required to be resealed after the angle of the water pump joint is adjusted in place, so that the water pump joint is very troublesome.
The quick connector for the water inlet and the water outlet of the water pump (application number: 201320625867.7) comprises a water inlet connector and a water outlet connector, wherein the water inlet connector comprises a water inlet male connector and a water inlet female connector, the water inlet female connector is sleeved on the outer side of the water inlet male connector and is connected with the water inlet male connector in a matched mode, and the water inlet male connector is connected with the water inlet of the water pump in a sealing mode through a flange fixed at one end of the water inlet male connector; the water outlet joint comprises a water outlet male joint and a water outlet female joint, one end of the water outlet male joint is sleeved in the elbow and connected with the water outlet of the water pump, the outer side of the other end of the water outlet male joint is sleeved with a water outlet female joint, and the water outlet female joint is fixedly connected with the elbow. However, after the quick connector is used for a long time, leakage is easy to occur, and the connecting effect is not ideal.
As disclosed in Chinese patent literature, a quick-change connector (application number: 201621449238.3) comprises a cylindrical locking sleeve, wherein a cylindrical locking framework is inserted in the locking sleeve and movably connected with the locking sleeve, a connecting pipe is inserted in the locking framework, a plurality of upper locking blocks capable of horizontally moving are arranged at the upper end of the locking framework, thrust springs are arranged between the upper locking blocks and the locking framework, first thread teeth with the same tooth shape are arranged at the inner ends of the upper locking blocks, a plurality of first protrusions are arranged on the inner side walls of the upper ends of the locking sleeve and are positioned at the outer sides of the upper locking blocks, first springs are arranged between the connecting pipe and the locking framework, and two ends of the first springs respectively prop against the connecting pipe and the locking framework. But the quick-change joint is not suitable for being connected with an internally threaded pipe and has a complex structure.
Disclosure of Invention
The invention aims at solving the problems in the prior art and provides a quick-change connector for an internally threaded pipe, which is suitable for being connected with the internally threaded pipe and has a simple and compact structure.
The aim of the invention can be achieved by the following technical scheme: the utility model provides a quick change joint of internal thread pipe, includes the lock sleeve of tube-shape, the cavity of lock sleeve insert and establish and swing joint have the tube-shape locking skeleton, the lower extreme axial positioning of locking skeleton be in the lock sleeve in, its characterized in that, the lock sleeve in axial fixedly connected with a plurality of locking claws, the lock skeleton can drive the locking claw be close to or keep away from in step the axis of lock sleeve, the other end of locking skeleton fixedly connected with seal end cover, seal end cover's middle part have the confession the through-hole that the locking claw passed, the outer end of locking claw all have the external screw thread, the lower extreme of locking claw stretch out in seal end cover.
When in connection, the locking claws are close to the axial position of the locking sleeve, and the outer diameter formed by the locking claws is smaller than the inner diameter of the internal threaded pipe. The locking claw is directly inserted into the internal thread pipe, the locking sleeve is rotated relative to the locking framework by rotating the locking sleeve, the locking sleeve drives the locking claw to synchronously keep away from the axis of the locking sleeve, the locking claw is meshed with the internal thread pipe, the locking sleeve is continuously rotated, the lower end face of the internal thread pipe and the lower end face of the sealing end cover are abutted against each other to form a seal, and the locking device has the advantages of being simple in structure and convenient to operate.
In the quick-change connector of the internally threaded pipe, the number of the locking claws is 2 to 6, and the locking claws are uniformly arranged by taking the axis of the locking sleeve as the center. By adopting the arrangement, the locking claw and the internal thread pipe form better engagement, and the locking claw and the internal thread pipe have the advantage of firm connection.
In the quick-change connector of the internally threaded pipe, the outer end face of the sealing end cover is provided with the positioning groove, and the sealing gasket is embedded in the positioning groove. The sealing gasket is embedded in the positioning groove, when the locking claw is inserted into the internal thread pipe, the end face of the internal thread pipe is abutted against the sealing gasket, the external thread of the locking claw is meshed with the internal thread of the internal thread pipe by rotating the locking sleeve, the locking sleeve is continuously rotated, the internal thread pipe is pushed to move towards the locking sleeve, the sealing gasket and the end face of the internal thread pipe form a seal, and the sealing gasket has the advantages of being good in sealing effect and convenient to connect.
In the quick-change connector of the internally threaded pipe, the inner end surface of the locking sleeve is provided with a plurality of arc-shaped grooves corresponding to the locking claws one by one, the distance from the central line of the arc-shaped grooves to the axis of the locking sleeve is gradually increased, the upper ends of the locking claws are fixedly connected with pins, and the pins are embedded in the corresponding arc-shaped grooves. The locking sleeve rotates relative to the locking framework, so that the arc-shaped groove pushes the pin to enable the locking claw to translate relative to the axis of the locking sleeve, and the locking sleeve has the advantages of being reliable in work and simple in structure.
In the quick-change connector of the internally threaded pipe, a sealing ring is arranged between the outer side wall of the locking framework and the upper end of the locking sleeve. By arranging the sealing ring, a better seal is formed between the upper end of the locking sleeve and the locking framework.
In the quick-change connector of the internally threaded pipe, the lower end of the locking framework is provided with the connecting part which is downward in opening and is in a cylinder shape, the connecting part is provided with the penetrating strip-shaped slide way, and the upper end of the locking claw is embedded in the strip-shaped slide way. The upper end of the locking claw is embedded on the strip-shaped slideway, and the strip-shaped slideway is arranged along the radial direction of the connecting part, so that the locking claw has a better guiding function on the movement of the locking claw.
In the quick-change connector of the internally threaded pipe, the upper end face of the sealing end cover abuts against the lower end face of the locking claw. The sealing end cover is abutted against the locking claw, has a good limiting effect on the locking claw, and has the advantages of being simple in structure and convenient to assemble.
In the quick-change connector of the internal thread pipe, the outer side wall of the locking framework is provided with the annular groove, the retainer ring is embedded in the annular groove, the outer end face of the locking sleeve abuts against the retainer ring, and the inner end face of the locking sleeve abuts against the upper end face of the connecting part. The outer end face and the inner end face of the locking sleeve are respectively abutted against the check ring and the connecting part, so that a good axis positioning effect is achieved between the locking sleeve and the locking framework, and the locking sleeve has the advantages of being good in connecting effect and simple in structure.
Compared with the prior art, the quick-change connector of the internally threaded pipe has the following advantages:
1. the locking sleeve is rotated relative to the locking framework by rotating the locking sleeve, the locking sleeve drives the locking claw to synchronously keep away from the axis of the locking sleeve, so that the locking claw is meshed with the internal thread pipe, and the locking sleeve is continuously rotated, so that the internal thread pipe is abutted against the sealing gasket of the sealing end cover to form a seal, and the locking sleeve has the advantages of simple structure and more convenient operation;
2. the locking sleeve rotates relative to the locking framework, so that the arc-shaped groove pushes the pin to enable the locking claw to translate relative to the axis of the locking sleeve, and the locking sleeve has the advantages of reliable work and simpler structure;
3. the sealing end cover is abutted against the locking claw, so that the locking claw has a good limiting effect, and meanwhile, the locking claw has the advantages of being simple in structure and convenient to assemble;
4. the upper end of the locking claw is embedded on the strip-shaped slideway, and the strip-shaped slideway is arranged along the radial direction of the connecting part, so that the locking claw has a better guiding function on the movement of the locking claw.
Drawings
FIG. 1 is a schematic view of the quick-change coupling of the present invention for internally threaded pipes in section B-B of FIG. 2.
Figure 2 is a schematic cross-sectional view of A-A of figure 1.
In the figure, 1, a locking sleeve; 1a, arc-shaped grooves; 2. locking the framework; 2a, a connecting part; 2b, a strip-shaped slideway; 2c, an annular groove; 3. a locking claw; 3a, external threads; 4. sealing the end cover; 4a, positioning grooves; 5. a sealing gasket; 6. a pin; 7. a retainer ring; 8. and (3) sealing rings.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 and 2, a quick-change connector of an internal thread pipe comprises a cylindrical locking sleeve 1, a cylindrical locking framework 2 is inserted into a cavity of the locking sleeve 1 and movably connected with the cavity, the lower end of the locking framework 2 is axially positioned in the locking sleeve 1, 3 locking claws 3 are axially fixedly connected in the locking sleeve 1, the 3 locking claws 3 are uniformly arranged by taking the axis of the locking sleeve 1 as the center, 3 arc-shaped grooves 1a in one-to-one correspondence with the locking claws 3 are arranged on the inner end surface of the locking sleeve 1, the axial distance from the central line of the arc-shaped grooves 1a to the axis of the locking sleeve 1 is gradually increased, a pin 6 is fixedly connected to the upper end of the locking claw 3, and the pin 6 is embedded in the corresponding arc-shaped groove 1 a.
The locking framework 2 can drive the locking claw 3 to synchronously approach or separate from the axis of the locking sleeve 1, the other end of the locking framework 2 is fixedly connected with the sealing end cover 4, the middle part of the sealing end cover 4 is provided with a through hole for the locking claw 3 to pass through, the outer ends of the locking claw 3 are respectively provided with an external thread 3a, and the lower ends of the locking claws 3 extend out of the sealing end cover 4. The lower end face of the sealing end cover 4 is provided with a positioning groove 4a, and a sealing gasket 5 is embedded in the positioning groove 4 a. The upper end face of the sealing end cover 4 is abutted against the lower end face of the locking claw 3, so that the locking claw 3 is well limited, and meanwhile, the sealing end cover has the advantages of being simple in structure and convenient to assemble.
A sealing ring 8 is arranged between the outer side wall of the locking framework 2 and the upper end of the locking sleeve 1. The lower end of the locking framework 2 is provided with a connecting part 2a which is provided with a downward opening and is in a cylinder shape, a penetrating strip-shaped slideway 2b is arranged on the connecting part 2a, and the upper end of the locking claw 3 is embedded in the strip-shaped slideway 2 b. The outer side wall of the locking framework 2 is provided with an annular groove 2c, a retainer ring 7 is embedded in the annular groove 2c, the outer end face of the locking sleeve 1 abuts against the retainer ring 7, and the inner end face of the locking sleeve 1 abuts against the upper end face of the connecting part 2 a.
When in connection, the locking claws 3 are close to the axial position of the locking sleeve 1, and the outer diameter formed by the 3 locking claws 3 is smaller than the inner diameter of the internally threaded pipe. The locking claw 3 is directly inserted into the internal thread pipe, the locking sleeve 1 is rotated relative to the locking framework 2 by rotating the locking sleeve 1, the arc-shaped groove 1a pushes the pin 6 to enable the locking sleeve 1 to drive the locking claw 3 to synchronously move away from the axis of the locking sleeve 1, the locking claw 3 moves outwards along the strip-shaped slide way 2b, the locking claw 3 is meshed with the internal thread pipe, the locking sleeve 1 is continuously rotated, the internal thread pipe is tightly abutted against the sealing gasket 5 of the sealing end cover 4 to form a seal, and the sealing effect is good, the structure is simple, and the operation is convenient.
The outer end face and the inner end face of the locking sleeve 1 are respectively abutted against the retainer ring 7 and the connecting part 2a, so that a good axis positioning effect is achieved between the locking sleeve 1 and the locking framework 2, and the locking sleeve has the advantages of being good in connecting effect and simple in structure.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although terms such as the locking sleeve 1, the arc-shaped groove 1a, the locking backbone 2, the connecting portion 2a, the bar-shaped slide way 2b, the annular groove 2c, the locking claw 3, the external thread 3a, the seal end cap 4, the positioning groove 4a, the gasket 5, the pin 6, the retainer ring 7, the seal ring 8, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention.
Claims (4)
1. The quick-change joint of the internally threaded pipe comprises a cylindrical locking sleeve (1), a cavity of the locking sleeve (1) is inserted and movably connected with a cylindrical locking framework (2), the lower end of the locking framework (2) is axially positioned in the locking sleeve (1), the quick-change joint is characterized in that a plurality of locking claws (3) are axially fixedly connected in the locking sleeve (1), the locking framework (2) can drive the locking claws (3) to synchronously approach or separate from the axis of the locking sleeve (1), the other end of the locking framework (2) is fixedly connected with a sealing end cover (4), the middle part of the sealing end cover (4) is provided with a through hole for the locking claws (3) to pass through, the outer ends of the locking claws (3) are provided with external threads (3 a), the lower ends of the locking claws (3) extend out of the sealing end cover (4), the outer end surface of the sealing end cover (4) is provided with a positioning groove (4 a), the positioning groove (4 a) is fixedly connected with the axis of the locking claws (1) in a one-to-one mode, the inner ends (6) of the locking claws (3) are fixedly connected with an arc-shaped pin (1), the pin (6) inlay in arc groove (1 a) that corresponds, the lateral wall of locking skeleton (2) with the upper end of lock sleeve (1) between be equipped with sealing washer (8), the lower extreme of locking skeleton (2) have opening and be connecting portion (2 a) of tube-shape downwards, connecting portion (2 a) on be equipped with bar slide (2 b) that run through, the upper end of lock claw (3) inlay in bar slide (2 b), the axis position that lock claw (3) are close to lock sleeve (1), the external diameter that a plurality of lock claws (3) formed is less than the internal diameter of internal thread pipe, with lock claw (3) direct insertion in the internal thread pipe, make lock sleeve (1) rotate relative lock skeleton (2) through rotating lock sleeve (1), lock sleeve (1) drive lock claw (3) and keep away from the axis of lock sleeve (1) in step, make lock claw (3) mesh with the internal thread pipe, continue to rotate lock sleeve (1), make internal thread pipe and seal end face (4) and seal down and form and seal tightly.
2. The quick-change joint for internally threaded pipes according to claim 1, wherein the number of locking claws (3) is 2 to 6 and the locking claws (3) are uniformly arranged centering on the axis of the locking sleeve (1).
3. A quick change coupling for internally threaded pipes according to claim 1 or 2, characterized in that the upper end surface of the sealing end cap (4) abuts against the lower end surface of the locking claw (3).
4. The quick-change joint of an internally threaded pipe according to claim 1 or 2, wherein an annular groove (2 c) is formed in the outer side wall of the locking framework (2), a retainer ring (7) is embedded in the annular groove (2 c), the outer end face of the locking sleeve (1) abuts against the retainer ring (7), and the inner end face of the locking sleeve (1) abuts against the upper end face of the connecting portion (2 a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711118311.8A CN107740894B (en) | 2017-11-13 | 2017-11-13 | Quick-change connector of internal thread pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711118311.8A CN107740894B (en) | 2017-11-13 | 2017-11-13 | Quick-change connector of internal thread pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107740894A CN107740894A (en) | 2018-02-27 |
| CN107740894B true CN107740894B (en) | 2023-08-18 |
Family
ID=61234541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711118311.8A Active CN107740894B (en) | 2017-11-13 | 2017-11-13 | Quick-change connector of internal thread pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107740894B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114052849B (en) * | 2020-07-31 | 2023-08-18 | 杭州三坛医疗科技有限公司 | Needle setting mechanism of epidural anesthesia robot |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003314775A (en) * | 2002-04-19 | 2003-11-06 | Jfe Pipe Fitting Mfg Co Ltd | Insertion type pipe joint and method of inserting pipe into insertion type pipe joint |
| CN201141496Y (en) * | 2007-11-26 | 2008-10-29 | 王春 | Quick-insertion type joint |
| CN101482209A (en) * | 2009-02-06 | 2009-07-15 | 伍婧绫 | Connector of pipe |
| CN102147035A (en) * | 2010-02-10 | 2011-08-10 | 上海龙胜实业有限公司 | Fast connection pipe joint structure |
| CN102252145A (en) * | 2011-07-19 | 2011-11-23 | 胡高中 | Quickly assembled and disassembled convenient joint |
| CN102359674A (en) * | 2011-08-23 | 2012-02-22 | 金颐实业有限公司 | Pipeline connecting device |
| CN206347238U (en) * | 2016-12-27 | 2017-07-21 | 利欧集团浙江泵业有限公司 | Quick-release connector |
| CN206608656U (en) * | 2017-02-24 | 2017-11-03 | 利欧集团浙江泵业有限公司 | A kind of quick change lock-on connection |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6851728B2 (en) * | 2002-07-10 | 2005-02-08 | Hakko Metal Industries Ltd. | Pipe-coupling device |
| US7568737B2 (en) * | 2006-09-22 | 2009-08-04 | Eaton Corporation | Male coupling for connecting to female threaded coupling |
-
2017
- 2017-11-13 CN CN201711118311.8A patent/CN107740894B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003314775A (en) * | 2002-04-19 | 2003-11-06 | Jfe Pipe Fitting Mfg Co Ltd | Insertion type pipe joint and method of inserting pipe into insertion type pipe joint |
| CN201141496Y (en) * | 2007-11-26 | 2008-10-29 | 王春 | Quick-insertion type joint |
| CN101482209A (en) * | 2009-02-06 | 2009-07-15 | 伍婧绫 | Connector of pipe |
| CN102147035A (en) * | 2010-02-10 | 2011-08-10 | 上海龙胜实业有限公司 | Fast connection pipe joint structure |
| CN102252145A (en) * | 2011-07-19 | 2011-11-23 | 胡高中 | Quickly assembled and disassembled convenient joint |
| CN102359674A (en) * | 2011-08-23 | 2012-02-22 | 金颐实业有限公司 | Pipeline connecting device |
| CN206347238U (en) * | 2016-12-27 | 2017-07-21 | 利欧集团浙江泵业有限公司 | Quick-release connector |
| CN206608656U (en) * | 2017-02-24 | 2017-11-03 | 利欧集团浙江泵业有限公司 | A kind of quick change lock-on connection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107740894A (en) | 2018-02-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107740894B (en) | Quick-change connector of internal thread pipe | |
| CN107313726A (en) | A kind of sleeve pipe cementing head Quick hoop and its application method | |
| CN212454355U (en) | Large-drift-diameter bridge plug with high sealing performance | |
| CN106499898A (en) | A kind of hydraulic quick coupler | |
| CN203757255U (en) | Deepwater multi-loop fast-connecting female joint | |
| CN104455815B (en) | Tapered sealing pipe connector for excavator | |
| CN106838517B (en) | A kind of novel quick coupling | |
| CN106499897A (en) | Hydraulic quick coupler | |
| CN209354797U (en) | A kind of low temperature oil filling riser convenient for connection | |
| CN206347238U (en) | Quick-release connector | |
| CN206439548U (en) | A kind of quick-release connector | |
| CN204284716U (en) | A kind of excavator cone sealing pipe joint | |
| CN212319048U (en) | Deformation embedded joint connection structure assembly | |
| CN213450310U (en) | Rotary blowout preventer shell integrated hydraulic locking device | |
| CN103697272B (en) | A kind of deepwater multi-loop connects female joint fast | |
| CN214405090U (en) | High-pressure pneumatic quick-mounting type joint | |
| CN104121441A (en) | Mass flow water cooling and rotating device | |
| CN207406959U (en) | A kind of quick-release connector of riffled tube | |
| CN104131790A (en) | Rotary reducing oil pipe clamp | |
| CN210564391U (en) | Internal connection type coiled tubing joint | |
| CN104832123B (en) | Manual blowout prevention device | |
| CN202176310U (en) | Built-in sleeve floating hoop | |
| CN203757254U (en) | Deepwater multi-loop fast-connecting male joint | |
| CN201405032Y (en) | Rotation coupling device for oil channel system of forging manipulator | |
| CN220749390U (en) | Plastic hose connecting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |