CN110594274B - Friction type anti-loosening structure of underwater clamp connector - Google Patents
Friction type anti-loosening structure of underwater clamp connector Download PDFInfo
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- CN110594274B CN110594274B CN201910836133.5A CN201910836133A CN110594274B CN 110594274 B CN110594274 B CN 110594274B CN 201910836133 A CN201910836133 A CN 201910836133A CN 110594274 B CN110594274 B CN 110594274B
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- threaded rod
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- clamping hand
- plate
- loosening
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- 238000003825 pressing Methods 0.000 claims abstract description 11
- 230000002265 prevention Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
The invention provides a friction type anti-loosening structure of an underwater clamp connector, which comprises a clamping hand, a clamping hand fixed plate, a clamping hand rotating block, a threaded rod, a threaded sleeve, a torsion joint, a guide plate and a pressing plate. The contact surface of the clamping hand and the clamping hoop connector, which is close to the bolt, is provided with reticulate patterns and knurls, so that the friction coefficient of the clamping hand and the close bolt can be increased; the convex edges are arranged outside the threaded sleeve, and the threaded sleeve and the connector shell plate are assembled and rotate for a certain angle to limit the circumferential direction and the axial movement of the threaded sleeve, so that the linear movement of the threaded rod can be ensured; when the threaded sleeve and the threaded rod are rusted and cannot be unscrewed, the threaded rod is axially pulled out from one side of the pressing plate of the shell plate by the manipulator carried by the remote swing control robot, wherein the pressing plate plays a limiting role and can be broken, and the locking device and the pull-in bolt can be separated; the guide plate is used for limiting the rotation of the clamping hand; the torsion joint is provided with an interface combined with a torque wrench, and the ROV carries the torque wrench to realize the rotation of the threaded rod, thereby providing the pressure of a clamping hand and a drawing bolt and finally realizing the anti-loosening purpose.
Description
Technical Field
The invention relates to an anti-loosening structure, in particular to a friction type anti-loosening structure of an underwater clamp connector.
Background
The three-piece horizontal clamp connector locks the three-piece clamp by means of the pull-in bolt, the pull-in bolt has certain self-locking capacity, in order to prevent vibration and enable the self-locking of the pull-in bolt to be invalid and increase the reliability of the pull-in bolt, the existing thread is a common fastening type anti-loosening and locking structure due to the fact that the structure of the existing thread has good self-locking performance. Threaded connections may be subjected to all kinds of fluctuating loads under operating conditions, including extremely severe vibration and shock loads. Failure of a threaded connection under varying loads is often caused by its own loosening and fatigue failure. In general, the anti-vibration life of the threaded connection is much shorter than the fatigue life of the materials and structures, and the loosening failure of the threaded connection caused by loosening occurs before the fatigue failure, and the failure of the threaded connection can affect the normal operation of equipment and even cause serious consequences. In the prior art, there are three common methods for preventing loosening: friction locking, mechanical locking and permanent locking. Among them, mechanical looseness prevention and frictional looseness prevention are called detachable looseness prevention, and permanent looseness prevention is called non-detachable looseness prevention. The commonly used permanent anti-loosening methods are as follows: spot welding, riveting, gluing, etc. The permanent anti-loosening method needs to destroy the anti-loosening device during disassembly, only can be operated by an ROV under water, but usually needs a higher-power ROV. The most common mechanical anti-loosening method is to punch holes in the bolt and the nut and fasten the bolt and the nut by a pin to prevent loosening. The advantage of this method is that the locking is reliable, which is generally determined by the static or fatigue strength of the mechanical fastener. But the weight of fastening connection can be greatly increased by mechanical anti-loosening, and the installation is troublesome, so that the underwater operation is not suitable. The common friction anti-loosening is to increase friction by using a gasket, a self-locking nut, a double nut and the like to further stop loosening, but the reliability of the friction anti-loosening device is poorer than that of other methods due to factors such as friction coefficient, pretightening force and the like. Due to the limited space available for underwater ROV operation and the uncertainty of the subsea environment, improvements are needed.
Disclosure of Invention
The invention aims to provide a friction type anti-loosening structure of an underwater hoop connector, which is applied to a thread-propelled friction type anti-loosening structure of a drawing bolt of the underwater hoop connector, can be installed and disassembled by a remote control Robot (ROV) underwater, can effectively increase pressure and increase the friction coefficient of a contact surface: the problems of insufficient underwater ROV operation space and power and the like are solved, and the cost is reduced from the aspect of economy; the problem of rusty disassembly caused by underwater factors is considered, the disassembly problem is perfectly solved, the reliability of the engineering is ensured, and the quality of the engineering is improved.
The purpose of the invention is realized as follows: including setting up the thread bush on the connector shell plate, setting up the threaded rod in the middle of the thread bush, set up the torque connector in threaded rod one end, set up the card hand commentaries on classics piece at the threaded rod other end, set up the card hand fixed plate outside the card hand commentaries on classics piece, set up the card hand of deciding the board upper end at the card, the upper surface of card hand be provided with the arc groove that is close bolt contact, still be provided with the deflector on the connector shell plate, deflector and card hand fixed plate outer surface contact.
The invention also includes such structural features:
1. and a pressing plate is arranged on the outer surface of the connector shell plate and is in contact with the threaded sleeve.
2. And the arc groove is provided with a reticulate pattern knurl.
3. The clamping hand rotating block is provided with a countersunk through hole, and a screw is arranged in the countersunk through hole to realize connection with the threaded rod.
4. The card hand fixed plate comprises two about, and two about and pass through bolt and nut and connect, and is provided with the shoulder hole that is used for holding card hand commentaries on classics piece and threaded rod on the card hand fixed plate.
Compared with the prior art, the invention has the beneficial effects that:
1. the ROV carries a torque wrench to apply torque to the torsion joint 16, the torsion joint 16 drives the threaded rod 14 to rotate, the threaded rod 14 drives the threaded sleeve 13 to rotate, as shown in FIG. 3, after the threaded sleeve 13 rotates for a certain angle, the threaded sleeve is circumferentially clamped by the connector shell plate 12 and remains stationary, and at the moment, the threaded rod 14 axially moves under the action of the torque. The card hand-fixing plate 6 does not rotate due to the existence of the guide plate 9. The contact surface of the clamping arm 3 and the drawing-in bolt 1 is provided with the reticulate pattern knurl, so that the friction coefficient can be effectively increased, and under the action of axial pressure, the friction force of the contact surface is greatly increased, so that the looseness prevention of the mechanism is realized.
2. The anti-loosening structure fully considers the difficulty of underwater operation, and the torsion joint 16 is arranged on the outer side of the connector shell plate 12, so that the underwater operation space of the ROV is enlarged.
3. The anti-loosening structure considers loosening prevention from two angles, firstly, the contact surface is provided with the reticulate pattern knurl, and secondly, the thread sleeve 14 is clamped at the position of the shell plate 12 of the connector due to the self-locking effect of the threads, so that the reliability of the whole anti-loosening structure is improved, and the quality of engineering is improved.
4. The anti-loosening mechanism is simple in structure, light in fastening connection weight, simple to install, suitable for underwater operation, capable of reducing the maximum power required by the ROV and reducing engineering cost.
5. This anti loosening structure has countersunk head through-hole at card hand commentaries on classics piece 8 division, and it relies on screw connection with the threaded rod, and it can realize card hand and threaded rod relative rotation, also can exert axial pressure for the card hand, and this kind of project organization saves space, has still increased the intensity of structure.
6. The anti-loosening structure takes the disassembly problem into consideration. As shown in figure 4, because the threaded connection of the anti-loosening structure is easy to rust in an underwater environment, when the anti-loosening structure is disassembled, the ROV carrying a mechanical hand can axially pull out the threaded rod 14, and meanwhile, the pressing plate 19 is damaged, so that the clamp can be separated.
Drawings
FIG. 1 is an exploded view of a friction type anti-loosening mechanism for an underwater bail connector according to the present invention;
FIG. 2 is a schematic view of the internal structure of the frictional locking structure of the underwater clamp connector according to the present invention;
FIG. 3 is a schematic view of the installation and locking of the friction type anti-loose threaded sleeve applied to the underwater clamp connector;
FIG. 4 is a schematic illustration of the removal of the friction type anti-loosening mechanism of the present invention applied to an underwater bail connector;
FIG. 5 is a schematic diagram of a friction type anti-loosening structure of an underwater clamp connector according to the present invention;
the main reference numbers in the figures illustrate:
1. the bolt comprises a drawing bolt, 2, a bolt, 3, a clamping hand, 4, a bolt, 5, a bolt, 6, a clamping hand fixed plate, 7, a gasket, 8, a clamping hand rotating block, 9, a guide plate, 10, a gasket, 11, a nut, 12, a connector shell plate, 13, a thread sleeve, 14, a threaded rod, 15, a bolt, 16, a torsion joint, 17, a gasket, 18, a nut, 19, a pressure plate, 20 and a bolt.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, 2 and 5, the friction type anti-loose structure applied to the underwater clamp connector comprises a clamping hand 3, a clamping hand fixing plate 6, a clamping hand rotating block 8, a threaded rod 14, a threaded sleeve 13, a torsion joint 16, a guide plate 9, a pressure plate 19, screws (2, 4 and 20) and bolt sets (5, 10, 11 and 15, 17 and 18). The clamping hand 3 is assembled on the clamping hand fixing plate 6 through a screw, the threaded rod 14 is connected with the clamping hand fixing plate 6 through a screw 4, the torsion joint 16 is connected with the threaded rod 14 through a bolt 15, the threaded sleeve 13 is connected with the threaded rod 14 through threads and fixed on the connector shell plate 12 through a boss, and the guide plate 9 is welded on the inner side of the connector shell plate 12. The pressing plate 19 is fixed on the outer side of the connector shell plate 12 by screws 20, and the clamping and fixing plate 6 is divided into two same parts and connected by bolts 5.
As shown in figures 1 and 2, the end surface of the clamping hand 3 is provided with a 90-degree arc groove, the diameter of the groove is the same as that of the drawing bolt 1, the contact surfaces (1 'and 2') of the clamping hand and the drawing bolt are provided with reticulate knurls, the friction coefficient can be greatly increased, two sides of the clamping hand 3 are respectively provided with three countersunk head through holes, and the clamping hand is connected with a clamping hand fixed plate through screws 2. The fixed plate of card hand is equipped with the counter sink, for threaded rod 14 and the assembly of fixed plate commentaries on classics piece 8 provide the space, three screw hole are respectively opened to both sides for with 3 assembly connections of card hand. The threaded rod 14 is externally tapped with full threads, the threads are self-locking fine threads, the head of the threaded rod 14 is provided with four bolt holes for being connected with the torsion joint 16, the tail end face of the threaded rod 14 is provided with a threaded hole, and the threaded rod is used for being assembled and connected with the clamping hand rotating block 8 through a screw 4. The end face of one side of the clamping hand rotating block 8 is provided with a countersunk through hole which is connected with the threaded rod 14 by the screw 4, so that the clamping hand 3 and the threaded rod 14 can rotate relatively, and axial pressure can be applied to the clamping hand 3. The thread sleeve 13 is internally provided with threads which are connected with a threaded rod 14, the outer part of the thread sleeve is provided with a convex rib which is connected with a connector shell plate 12, the convex rib limits the circumferential direction and the axial movement of the thread sleeve, when torque is applied to the threaded rod 14, the threaded rod 14 drives the thread sleeve 13 to rotate, when the thread sleeve 13 rotates for a certain angle, the circumferential direction of the thread sleeve 13 is clamped, the thread sleeve 13 and the connector shell plate 12 keep relatively static, and the thread transmission between the thread sleeve and the threaded rod 14 realizes the axial linear movement of the clamping hand 3. The clamp plate 19 is provided with two screw holes which are connected through screws 20 and assembled on the outer side of the connector shell plate 12, on one hand, the axial movement of the threaded sleeve 13 is limited, and on the other hand, when the threaded sleeve 13 and the threaded rod 14 are rusted to be dead and cannot be unscrewed, a remote swing control Robot (ROV) carries a manipulator to axially pull out the threaded rod 14 and break the threaded rod at the same time, so that the clamp can be separated. The guide plate 9 is provided with four screw holes, and is fixed on the inner side of the connector shell plate 12 for limiting the rotation of the clamping arm 3. One end of the torsion joint 16 is provided with four bolt holes for being assembled and connected with the threaded rod 14 through bolts 15, and the other end of the torsion joint is provided with a circular ring interface combined with a torque wrench, and the rotation of the torsion joint is realized by carrying the torque wrench by an ROV. Meanwhile, when the thread bush and the threaded rod are rusted and cannot be unscrewed, a remote swing control Robot (ROV) carries a manipulator to penetrate through the circular ring and pull out the ring by damaging the pressing plate through axial force.
The friction type anti-loosening structure applied to the underwater hoop connector has the following functions: firstly, the tail part of the threaded rod 14 and the torsion joint 16 are connected through bolt groups 15, 17 and 18, the head part of the threaded rod 14 penetrates through the threaded sleeve 13 and then enters from the outer side of the connector shell plate 12, and then the pressure plate 19 is assembled on the outer side of the connector shell plate 12 through the bolts 20 and axially clamps the positioning threaded sleeve 13. The head of the threaded rod 14 is connected with the hand-clamping rotating block 8 through a screw, the two hand-clamping fixed plates 6 are connected through bolt groups 5, 10 and 11 from two sides, and the plane of the countersunk hole of the hand-clamping fixed plate 6 is contacted with the bottom surface of the hand-clamping rotating block 8. And finally, the clamping hand 3 is connected with the clamping hand fixing plate through a screw 2. After the bolt 1 is pulled close, an ROV can carry a torque wrench to apply torque to the torsion joint 16, the threaded rod 14 moves axially to drive the clamping hand 3 to compress the bolt 1, and the friction force is extremely large due to the effect of the reticulate knurls on the contact surfaces (1 'and 2'), so that looseness prevention is realized. The threaded sleeve 13 is driven by the torque of the threaded rod 14 to rotate, and is clamped after rotating a certain angle, so that the anti-loosening reliability is improved.
In summary, the invention provides a friction type anti-loosening structure applied to an underwater clamp connector, which comprises a clamping hand, a clamping hand fixed plate, a clamping hand rotating block, a threaded rod, a threaded sleeve, a torsion joint, a guide plate, a pressing plate, a screw and a bolt. The innovation point is as follows: the contact surface of the clamping arm and the clamping bolt of the clamp connector is provided with reticulate patterns and knurls, so that the friction coefficient of the clamping arm and the clamping bolt can be increased; the convex edges are arranged outside the threaded sleeve, and the threaded sleeve and the connector shell plate are assembled and rotate for a certain angle to limit the circumferential direction and the axial movement of the threaded sleeve and ensure the linear movement of the threaded rod; when the threaded sleeve and the threaded rod are rusted and cannot be unscrewed, a remote swing control Robot (ROV) carries a manipulator to axially pull out the threaded rod from one side of a pressing plate of the shell plate, wherein the pressing plate plays a limiting role and can be broken, and the locking device and the approaching bolt can be separated; the guide plate is used for limiting the rotation of the clamping hand; the torsion joint is provided with an interface combined with a torque wrench, and the ROV carries the torque wrench to realize the rotation of the threaded rod, thereby providing the pressure of a clamping hand and a drawing bolt and finally realizing the anti-loosening purpose.
Claims (3)
1. Friction formula anti loosening structure of clamp connector under water, its characterized in that: the connector shell plate is also provided with a guide plate, and the guide plate is contacted with the outer surface of the clamping hand fixed plate; a pressing plate is arranged on the outer surface of the connector shell plate and is in contact with the threaded sleeve; the arc groove is provided with a reticulate pattern knurl; after the operation of the pull-up bolt is finished, the ROV carries a torque wrench to apply torque to the torsion joint, the threaded rod moves axially to drive a clamping hand to press the pull-up bolt, and due to the effect of the mesh knurling on the contact surface, the friction force is extremely large, and the looseness prevention is realized; the threaded sleeve rotates under the driving of the torque of the threaded rod, and is clamped after rotating for a certain angle, so that the anti-loosening reliability is improved.
2. The friction type looseness prevention structure of an underwater band connector according to claim 1, wherein: the clamping hand rotating block is provided with a countersunk through hole, and a screw is arranged in the countersunk through hole to realize connection with the threaded rod.
3. The friction type anti-loose structure of the underwater band connector according to claim 1 or 2, wherein: the card hand fixed plate comprises two about, and two about and pass through bolt and nut and connect, and is provided with the shoulder hole that is used for holding card hand commentaries on classics piece and threaded rod on the card hand fixed plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910836133.5A CN110594274B (en) | 2019-09-05 | 2019-09-05 | Friction type anti-loosening structure of underwater clamp connector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910836133.5A CN110594274B (en) | 2019-09-05 | 2019-09-05 | Friction type anti-loosening structure of underwater clamp connector |
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| CN110594274A CN110594274A (en) | 2019-12-20 |
| CN110594274B true CN110594274B (en) | 2021-04-20 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228752B (en) * | 2020-10-15 | 2022-01-11 | 哈尔滨工程大学 | Movable positioning anti-loosening structure of underwater clamp connector |
| CN115929760A (en) * | 2022-11-21 | 2023-04-07 | 哈尔滨工程大学 | Underwater torque interface movable clamping flap type anti-loosening mechanism |
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| CN207750362U (en) * | 2018-01-19 | 2018-08-21 | 洛阳力肯航空科技有限公司 | A kind of airborne cabinet pulls out formula rapid locking device with helping |
| CN208396676U (en) * | 2018-07-03 | 2019-01-18 | 苏州道森钻采设备股份有限公司 | A kind of underwater clamping hoop type connector |
| DE102018102915A1 (en) * | 2018-02-09 | 2019-08-14 | Lisa Dräxlmaier GmbH | Clamping system for securing a battery of a vehicle |
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2019
- 2019-09-05 CN CN201910836133.5A patent/CN110594274B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2488646Y (en) * | 2001-07-19 | 2002-05-01 | 华南农业大学 | Fast screw clamping mechanism |
| CN201057340Y (en) * | 2007-07-20 | 2008-05-07 | 赵书江 | Fast pipe joining apparatus with pressure |
| CN201083218Y (en) * | 2007-09-05 | 2008-07-09 | 叶挺旺 | Automobile rear-view mirror tube clip |
| CN201916298U (en) * | 2010-07-07 | 2011-08-03 | 李一品 | Locking device of hoop |
| CN103115062A (en) * | 2012-12-08 | 2013-05-22 | 宁波市鄞州云帆工程咨询有限公司 | Bi-directional anchoring type anti-loosening composite member of bolt and nut |
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| CN207750362U (en) * | 2018-01-19 | 2018-08-21 | 洛阳力肯航空科技有限公司 | A kind of airborne cabinet pulls out formula rapid locking device with helping |
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| CN110594274A (en) | 2019-12-20 |
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