CN104802116B - Self-elevating platform motor torque pre-loading device and loading and detecting method - Google Patents
Self-elevating platform motor torque pre-loading device and loading and detecting method Download PDFInfo
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- CN104802116B CN104802116B CN201410811390.0A CN201410811390A CN104802116B CN 104802116 B CN104802116 B CN 104802116B CN 201410811390 A CN201410811390 A CN 201410811390A CN 104802116 B CN104802116 B CN 104802116B
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000036316 preload Effects 0.000 claims description 37
- 238000001514 detection method Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 2
- 210000004247 hand Anatomy 0.000 claims description 2
- 210000003141 lower extremity Anatomy 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000001133 acceleration Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/147—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention provides a self-elevating platform motor torque pre-loading device and a method for pre-loading torque and detecting pre-loaded torque by the motor torque pre-loading device. The motor torque pre-loading device comprises a torque wrench, an operation handle and a motor connector, the torque wrench is provided with a torque loading end, a torque output end and a display unit for displaying a torque value, the operation handle is connected with the torque loading end of the torque wrench, one end of the motor connector is adaptively connected with the torque output end of the torque wrench and can be driven to rotate by the torque wrench, and the other end of the motor connector is provided with a connecting portion for connecting a motor output shaft. The motor torque pre-loading device overcomes the defects of a traditional pile leg lifting control system in terms of torque loading and detecting, and the risk of damaging a lifting device by instantaneous impact is reduced, so that lifting operation is safer and rapider. Besides, the device is simple to manufacture, convenient to operate and high in practicability.
Description
Technical field
The present invention relates to marine engineering equipment construction applications, particularly to a kind of motor torque prestrain of jack-up unit
Device, and the method carrying out moment prestrain and prestrain moment inspecting respectively using this motor torque pre-load means.
Background technology
For traditional pile legs of self-elevating drilling platform lifting and fastening system, in control system, lack lift motor
Moment of torsion pre-loaded function, in spud leg lifting process, moment transfers to jacking system from fastening system, it will to lift motor
Produce instantaneous impulsive force it is easy to cause the badly damaged of lift motor and related accessories, and then affect the tune of drilling platforms
Examination progress, when serious, the entirety of even impact platform is paid, and causes huge property loss to shipyard.
Although increased pre-loaded function for the spud leg lift control system after part upgrading, but in order to ensure
The safety of descending operation it is also desirable to detect to the moment being loaded, to verify the accuracy of prestrain, it is to avoid cause rise
Fall motor and related accessories badly damaged.
Content of the invention
It is an object of the invention to provide a kind of motor torque pre-load means of jack-up unit, and provide utilization respectively
The method that this motor torque pre-load means carries out prestrain and prestrain moment inspecting, overcomes traditional spud leg elevating control system
System loads the defect with context of detection in torsion, it is to avoid the phenomenon that lowering or hoisting gear damages because suffering from instantaneous impact.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that：
According to an aspect of the present invention, the present invention provides a kind of motor torque pre-load means of jack-up unit, bag
Include torque spanner, operation handle and motor union joint；Torque spanner has moment loading end and moment outfan, and be provided with order to
The display unit of display moment values；Operation handle connects the moment loading end of described torque spanner；Motor union joint one end is adapted to
Ground connect described torque spanner moment outfan and can by torque spanner drive rotate, the motor union joint other end be provided with order to
Connect the connecting portion of motor output shaft.
Preferably, it is detachable company between described operation handle, described motor union joint and described torque spanner
Connect.
Preferably, described operation handle passes through a pepe bridge and described torque spanner detachable connection；Described pipe
Suspension bracket includes two holders, and two holders pass through the detachably connected fixation of securing member；The moment loading end of described torque spanner
It is located between two holders, described operation handle is fixedly connected with wherein one holder.
Preferably, described two holders are symmetrical structure, holder profile rectangular-blocklike, and its side is provided with opening；Two
The opening of holder is relative, thus clamping the moment loading end of described torque spanner.
Preferably, described operation handle is vertical with described torque spanner.
Preferably, described connecting portion includes an axle sleeve, and axle sleeve is provided with keyway, is connected with fixing with described motor output shaft
Connect.
According to another aspect of the present invention, the present invention provides a kind of motor torque pre-add support method of jack-up unit,
Described jack-up unit includes the gear that the spud leg with tooth bar is meshed with described tooth bar, and in order to drive described gear
Rotate to drive the motor of described spud leg lifting；This motor torque pre-add support method adopts motor torque prestrain as above
Device carries out the prestrain of motor torque；Described motor torque pre-add support method includes：Before carrying out spud leg lifting, by operation
The moment of torque spanner is loaded onto setting value by handle, so that motor union joint is fixedly connected with the output shaft of motor, thus will turn round
This moment of torque wrench is loaded onto on the output shaft of described motor by motor union joint；Described setting value is not less than spud leg and lifts
When pinion feedback to motor output shaft torque value.
Preferably, before by described motor union joint to described motor loading moment, also include motor is tested,
And the step discharging motor pressure.
According to a further aspect of the invention, the present invention provides a kind of motor prestrain moment inspecting side of jack-up unit
Method, described jack-up unit includes the gear that the spud leg with tooth bar is meshed with described tooth bar, and in order to drive described tooth
Wheel rotates to drive the motor of described spud leg lifting；Before carrying out spud leg lifting, described motor is entered by carrying pre-loaded function
Go moment prestrain；This motor preload force moment detection method is carried out using motor torque pre-load means as above；
Methods described includes：Described motor union joint is fixedly connected with the output shaft of described motor, is shown by display unit described
The size of the moment of motor prestrain, and thus judge whether prestrain moment meets the requirements.
Preferably, methods described also includes：When the prestrain moment described motor is detected is undesirable, by behaviour
Make handle and the moment of torque spanner is loaded onto satisfactory value, this moment of torque spanner is loaded by motor union joint
To the output shaft of described motor.
As shown from the above technical solution, advantages of the present invention and good effect are：Motor torque provided by the present invention
Pre-load means, can carry out prestrain to the lift motor of jack-up unit, greatly reduce lowering or hoisting gear because instantaneously being rushed
The risk hit power and damage, makes the lift work of jack-up unit spud leg safer, rapid.Meanwhile, this device makes simple, behaviour
Make convenient, practicality height, the debugging to jack-up unit is significant.
Brief description
Fig. 1 is the structural representation of motor torque pre-load means preferred embodiment of the present invention.
Fig. 2 is the structure sectional view of motor torque pre-load means preferred embodiment of the present invention.
Fig. 3 is the use state schematic diagram of motor torque pre-load means preferred embodiment of the present invention.
Description of reference numerals is as follows：1st, motor torque pre-load means；11st, torque spanner；111st, moment loading end；112、
Moment outfan；113rd, display unit；12nd, operation handle；13rd, motor union joint；131st, connecting rod；132nd, connecting portion；14th, manage
Sub- suspension bracket；141st, holder；142nd, holder；143rd, securing member；2nd, motor；21st, output shaft；3rd, drive mechanism；4th, gear.
Specific embodiment
Embody feature of present invention will describe in detail in the following description with the exemplary embodiment of advantage.It should be understood that
The present invention can have various changes on different embodiments, and it neither departs from the scope of the present invention, and theory therein
Bright and diagram is treated as purposes of discussion in itself, and is not used to limit the present invention.
Jack-up unit include main hull and can with respect to main hull lifting spud leg, on main hull equipped with spud leg
Cooperation is to realize the lowering or hoisting gear lifting.Wherein, in jack-up unit more typically, spud leg adopts truss structure, sets thereon
There is tooth bar.Lowering or hoisting gear is correspondingly provided with to be adapted to meshed gears with the tooth bar of spud leg, and gear is driven by lift motor and turns
Dynamic, thus driving gear rack elevating.
The present invention is intended to provide a kind of motor torque pre-load means being applied to this jack-up unit, its implementation principle
For：In spud leg lifting process, before locking device unclamps, by this motor torque pre-load means, moment of torsion (power is carried out to motor
Square) preload operation, the weight transmitting making main platform body in rack-and-pinion, so after unclamping locking device, Ke Yiyou
Effect avoids lifter wheel tooth bar and motor to be destroyed because of the impact by transient force.After the completion of prestrain, then carry out normal
Spud leg descending operation.
Fig. 1 and Fig. 2 illustrates the structure of motor torque pre-load means one preferred embodiment of the present invention.This motor torque is pre-
Charger 1 mainly includes torque spanner 11, operation handle 12, motor union joint 13 and pepe bridge 14.
Torque spanner 11 has moment loading end 111 and moment outfan 112, and is provided with to show the display of moment values
Unit 113.The display unit 113 illustrated in the present embodiment is hand of dial formula, in other embodiments or digital
Formula.The principle of torque spanner 11 and structure can refer to existing torque spanner, are not specifically introduced herein.
Operation handle 12 passes through the moment loading end 111 of the detachably connected torque spanner 11 of pepe bridge 14, for using
Person applies torsion to torque spanner 11.Operation handle 12 is perpendicular with torque spanner 11, can be more laborsaving.
Motor union joint 13 includes connecting rod 131, and connecting rod 131 one end is suitable with the moment outfan 112 of torque spanner 11
Join connection and rotation can be driven by torque spanner 11, connecting rod 131 other end is provided with connecting portion 132 with for connecting motor output
Axle.
As shown in Fig. 2 the structure of one end that connecting rod 131 is connected with torque spanner 11 is defeated according to the moment of torque spanner 11
Depending on going out the structure at end 112, for example, it can be spline structure.Connecting rod 131 is detachable connection with torque spanner 11, is easy to tear open
Dress.
Depending on the concrete structure of connecting portion 132 can be according to the structure of motor, in the present embodiment, connecting portion 132 includes an axle
Set, can be sheathed on motor output shaft, and axle sleeve is provided with keyway, can be fixedly connected with motor output shaft by driving key.
Pepe bridge 14 is a Tc type pepe bridge, and it includes two holders 141,142, and two holders 141,142 are right
Claim structure, profile rectangular-blocklike, side is provided with opening, make holder 141,142 form similar U-shape structure.Two holders
141st, 142 opening is relative, thus clamping the moment loading end 111 of torque spanner 11.In opening two on two holders 141,142
Side is respectively equipped with the installing hole of adaptation, then by detachably connected with the securing member 143 that the nut of adaptation is constituted by bolt.
Operation handle 12 and holder 142 are fixedly connected by welding, the mode such as bonding, thus being formed with torque spanner 11
Detachable connection.
The version of pepe bridge 14 is not limited to the structure shown in figure, only needs itself and torque spanner 11 to be formed removable
The formula of unloading connects.And operation handle 12 is also not limited to carry out even only with pepe bridge 14 with the connection of torque spanner 11
Connect.
This motor torque pre-load means 1 is passed through operation handle 12 and is applied moment of torsion to torque spanner 11, torque spanner 11
Moment of torsion is transferred on motor by motor union joint 13 again, thus moment prestrain can be carried out to the motor of jack-up unit, greatly
The risk that big reduction lowering or hoisting gear damages because suffering from instantaneous impact.
Further, in the present embodiment, Each part part adopts detachable connection, when not in use, disassembled after
Place, saving takes up room, convenient collection；And the torsion that operation handle 12 and motor union joint 13 can mate different size is pulled
Handss 11, meet different demands, using more flexible.
According to above-mentioned motor torque pre-load means 1, the present invention also provides a kind of motor force of jack-up unit respectively
Square pre-add support method and motor preload force moment detection method.Wherein, motor torque pre-add support method is applied to spud leg lifting electricity
The jack-up unit of control system no pre-loaded function, in order to carry out prestrain to motor；Motor preload force moment detection method is then
It is applied to the jack-up unit with pre-loaded function for the spud leg electric control system for lifting, in order to carry out to the motor after prestrain moment
The detection of moment.
In both approaches, motor torque pre-load means 1 are identical with the connected mode of motor 2.As shown in figure 3, motor 2
Connect gear 4 by drive mechanism 3 to rotate with driving gear 4.The motor union joint 13 of motor torque pre-load means 1 is i.e. and horse
Reach 2 output shaft 21 to be fixedly connected.
Motor torque pre-add support method is specially：Before carrying out spud leg lifting, by operation handle 12 by torque spanner 11
Moment be loaded onto setting value, so that motor union joint 13 is fixedly connected with the output shaft 21 of motor 2, thus by torque spanner 11
This moment is loaded onto on the output shaft 21 of motor 2 by motor union joint 13；Described setting value is not less than gear 4 when spud leg lifts
Feed back to the torque value of motor 2 output shaft 21.
The step of practical operation approximately as：
First, the calculating of lift motor moment of torsion W；
1st, calculate gear compound graduation circular diameter D：
Its computing formula is：
Wherein：M is module, and P is tooth pitch, and Z is the number of teeth.
2nd, moment of torsion W (the i.e. torque spanner need that lowering or hoisting gear outfan feeds back to motor-end after drive mechanism are calculated
The torque setting value loading) be：
Wherein：T is lowering or hoisting gear outfan lifting weight；I is gear ratio；η is motor service efficiency, can be from supply
Inquire about in business's Technical specification；G is acceleration of gravity constant.
2nd, before rising stake, according to the requirement in equipment operation handbook, lift motor is tested, and using spud leg lifting electricity
Control system discharges the pressure of lift motor.
3rd, after confirming that the lowering or hoisting gear of whole ship has no problem, the cover plate of lift motor afterbody of dismantling, motor torque is pre-
Charger is connected on the power transmission shaft of formal scheme, then releasing of brake, and this lift motor is carried out by the original moment of torsion calculating
Prestrain.Each lift motor for jack-up unit according to said method carries out calculated torque and carries out prestrain one by one.
4th, after prestrain, unclamp fastening system, carry out follow-up spud leg descending operation.
Taking the preload operation under a certain jack-up unit spud leg electric control system for lifting no pre-loaded function as a example：
First, inquire about following parameter from supplier's Technical specification：Tooth pitch P=9.894in, tooth number Z=7, lifting dress
Put outfan lifting weight T=454000kg, lifting unit gear ratio i=6679, motor service efficiency η=0.9.Gravity
Acceleration constant g is taken as：G=9.8m/s2.
Gear compound graduation circular diameterMotor needs the moment of torsion of prestrain
When carrying out moment prestrain using motor torque pre-load means 1 of the present invention, that is, pass through operation handle 12 to torsion
Torque wrench 11 applies the moment of 206.36N m, and moment values can be controlled in itself by torque spanner 11.Then, by motor
The moment of motor 2 is preloaded into 206.36N m by union joint 13.
For the spud leg jack-up unit with pre-loaded function for the electric control system for lifting, when motor 2 is by carrying pre-add
After load function has carried out moment prestrain, the moment in order to confirm each motor 2 meets requirement, can be by the motor torque of the present invention
Pre-load means 1 detect to motor 2 prestrain moment.
This detection method is：Will be fixing with the output shaft 21 of motor 2 for the motor union joint 13 of motor torque pre-load means 1
Connect, show the size of motor 2 moment of prestrain by the display unit 113 of torque spanner 11, and thus judge pre-add
Carry whether moment meets the requirements.
More preferably, when prestrain moment motor 2 is detected is undesirable, by operation handle 12 by torque spanner
11 moment is loaded onto satisfactory value, and this moment of torque spanner 11 is loaded onto motor 2 by motor union joint 13
On output shaft 21.
The step of practical operation approximately as：
First, the calculating of lift motor moment of torsion W；The method that calculating process refers to above-mentioned moment prestrain.
2nd, before rising stake, according to the requirement in equipment operation handbook, lift motor is tested, and discharge lift motor
Pressure.
3rd, after confirming that the lowering or hoisting gear of whole ship has no problem, according to the moment of torsion being previously calculated, using spud leg carry pre-
Load function and respectively automatic prestrain is carried out to the lift motor of each spud leg, locking braking afterwards.
4th, dismantle the cover plate of lift motor afterbody, detect lift motor afterbody one by one with this motor torque pre-load means
Whether prestrain moment of torsion meets the requirements.If met, carrying out next step operation, if do not met, checking that corresponding electric-control system is
No existing problems, until queueing problem, make the moment of torsion of each motor prestrain meet the requirements.Should be noted personnel's during being somebody's turn to do
Safe operation, should avoid the reversion of this device that operator is damaged.
5th, after the completion of prestrain, unclamp fastening system, carry out follow-up descending operation.
Although describing the present invention with reference to several exemplary embodiment, it is to be understood that, term used be explanation and
Exemplary and nonrestrictive term.Due to the present invention can be embodied as in a variety of forms without deviating from invention spirit or
Essence, it should therefore be appreciated that above-mentioned embodiment is not limited to any aforesaid details, and should be limited in appended claims
Widely explain in spirit and scope, therefore fall into the whole changes in claim or its equivalent scope and remodeling all should be with
Attached claim is covered.
Claims (9)
1. a kind of motor torque pre-load means of jack-up unit are it is characterised in that include：
Torque spanner, it has moment loading end and moment outfan, and is provided with to show the display unit of moment values；
Operation handle, connects the moment loading end of described torque spanner；
Motor union joint, its one end adaptedly connects the moment outfan of described torque spanner and can be driven by torque spanner and turn
Dynamic, the motor union joint other end is provided with to connect the connecting portion of motor output shaft；
Described operation handle passes through a pepe bridge and described torque spanner detachable connection；Described pepe bridge includes two folders
Gripping member, two holders pass through the detachably connected fixation of securing member；The moment loading end of described torque spanner is located in two clampings
Between part, described operation handle is fixedly connected with wherein one holder.
2. motor torque pre-load means according to claim 1 are it is characterised in that described motor union joint and described torsion
It is detachable connection between torque wrench.
3. motor torque pre-load means according to claim 1 are it is characterised in that described two holders are symmetrical junction
Structure, holder profile rectangular-blocklike, its side is provided with opening；The opening of two holders is relative, thus clamp described torsion pulling
The moment loading end of handss.
4. the motor torque pre-load means according to any one of claim 1-3 it is characterised in that described operation handle with
Described torque spanner is vertical.
5. the motor torque pre-load means according to any one of claim 1-3 are it is characterised in that described connecting portion includes
One axle sleeve, and axle sleeve is provided with keyway, to be fixedly connected with described motor output shaft.
6. the motor torque pre-add support method of a kind of jack-up unit, described jack-up unit include spud leg with tooth bar and
The gear that described tooth bar is meshed, and in order to drive described pinion rotation to drive the motor of described spud leg lifting；Its feature
It is, this motor torque pre-add support method is carried out using the motor torque pre-load means as described in any one of claim 1-5
The prestrain of motor torque；
Described motor torque pre-add support method includes：
Before carrying out spud leg lifting, the moment of torque spanner is loaded onto by setting value by operation handle, make motor union joint with
The output shaft of motor is fixedly connected, thus this moment of torque spanner is loaded onto the output of described motor by motor union joint
On axle；When described setting value is not less than spud leg lifting, pinion feedback is to the torque value of motor output shaft.
7. motor torque pre-add support method according to claim 6 it is characterised in that by described motor union joint to
Before described motor loading moment, also include motor is tested, and the step discharging motor pressure.
8. the motor preload force moment detection method of a kind of jack-up unit, described jack-up unit includes the stake with tooth bar
The gear that lower limb is meshed with described tooth bar, and in order to drive described pinion rotation to drive the motor of described spud leg lifting；?
Before carrying out spud leg lifting, described motor has carried out moment prestrain by carrying pre-loaded function；It is characterized in that, this motor is pre-
Loading moment detection method is carried out using the motor torque pre-load means as described in any one of claim 1-5；
Methods described includes：
Described motor union joint is fixedly connected with the output shaft of described motor, described motor pre-add is shown by display unit
The size of the moment carrying, and thus judge whether prestrain moment meets the requirements.
9. motor preload force moment detection method according to claim 8 is it is characterised in that methods described also includes：
When the prestrain moment described motor is detected is undesirable, by operation handle, the moment of torque spanner is loaded
To satisfactory value, this moment of torque spanner is loaded onto on the output shaft of described motor by motor union joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410811390.0A CN104802116B (en) | 2014-12-22 | 2014-12-22 | Self-elevating platform motor torque pre-loading device and loading and detecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410811390.0A CN104802116B (en) | 2014-12-22 | 2014-12-22 | Self-elevating platform motor torque pre-loading device and loading and detecting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104802116A CN104802116A (en) | 2015-07-29 |
| CN104802116B true CN104802116B (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410811390.0A Active CN104802116B (en) | 2014-12-22 | 2014-12-22 | Self-elevating platform motor torque pre-loading device and loading and detecting method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2021708B1 (en) * | 2018-09-25 | 2020-05-07 | Gustomsc Resources Bv | Method for stabilizing a jack-up platform unit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS629242A (en) * | 1985-07-08 | 1987-01-17 | Mitsubishi Heavy Ind Ltd | Load torque detector |
| CN1843705A (en) * | 2005-04-07 | 2006-10-11 | 京都机械工具株式会社 | Torque wrench |
| CN201249418Y (en) * | 2008-06-11 | 2009-06-03 | 王言忠 | Constant torque boosting wrench for railway sleeper nuts |
| CN202438953U (en) * | 2012-03-12 | 2012-09-19 | 东北石油大学 | Turning gear for oil pumping unit motor |
| CN104029158A (en) * | 2014-05-30 | 2014-09-10 | 杭州电子科技大学 | Torque protection safety chuck spanner |
| CN204321955U (en) * | 2014-12-22 | 2015-05-13 | 烟台中集来福士海洋工程有限公司 | The motor torque pre-load means of jack-up unit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140207391A1 (en) * | 2013-01-21 | 2014-07-24 | Wei-Ning Hsieh | Torque socket structure |
-
2014
- 2014-12-22 CN CN201410811390.0A patent/CN104802116B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS629242A (en) * | 1985-07-08 | 1987-01-17 | Mitsubishi Heavy Ind Ltd | Load torque detector |
| CN1843705A (en) * | 2005-04-07 | 2006-10-11 | 京都机械工具株式会社 | Torque wrench |
| CN201249418Y (en) * | 2008-06-11 | 2009-06-03 | 王言忠 | Constant torque boosting wrench for railway sleeper nuts |
| CN202438953U (en) * | 2012-03-12 | 2012-09-19 | 东北石油大学 | Turning gear for oil pumping unit motor |
| CN104029158A (en) * | 2014-05-30 | 2014-09-10 | 杭州电子科技大学 | Torque protection safety chuck spanner |
| CN204321955U (en) * | 2014-12-22 | 2015-05-13 | 烟台中集来福士海洋工程有限公司 | The motor torque pre-load means of jack-up unit |
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| Publication number | Publication date |
|---|---|
| CN104802116A (en) | 2015-07-29 |
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