CN112936156B - Spanner - Google Patents
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- Publication number
- CN112936156B CN112936156B CN202110385683.7A CN202110385683A CN112936156B CN 112936156 B CN112936156 B CN 112936156B CN 202110385683 A CN202110385683 A CN 202110385683A CN 112936156 B CN112936156 B CN 112936156B
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- sensor
- wrench
- output shaft
- angle sensor
- transmission
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- 230000005540 biological transmission Effects 0.000 claims abstract description 49
- 230000000903 blocking effect Effects 0.000 claims description 7
- 230000006698 induction Effects 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 description 13
- 238000012360 testing method Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000009863 impact test Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000004088 simulation 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
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention relates to a wrench, which comprises a wrench shell, an angle sensor and an output shaft, wherein the output shaft comprises a normal connection output shaft part which is in rotating fit with the wrench shell, the output shaft further comprises a transmission head which is detachably connected with the normal connection output shaft part, the transmission head is provided with a torque output end which is in rotating fit with a screwed piece, a sensor bracket is coaxially and rotatably assembled on the transmission head, and the angle sensor comprises a sensor rotating part which is connected with the transmission head and a sensor fixing part which is arranged on the sensor bracket and is used for measuring the sensor rotating part. The invention solves the technical problem that the angle sensor is not easy to be detached from the spanner shell in the prior art.
Description
Technical Field
The present invention relates to wrenches in the field of screwing tools.
Background
In various fields of iron towers, bridges, railways, equipment manufacturing industries and the like, the tightening of nuts and bolts is faced, and the torque between the nuts and the bolts needs to be ensured to reach the set torque, so that the application of the fixed torque wrench is very wide and very necessary.
The traditional spanner has two kinds, one is the continuous output type spanner, and one is the impact spanner, and the output shaft of continuous output type spanner takes the nut to rotate in succession until the locking, and nut and output shaft remain the linkage relation always, therefore the fixed torque of this kind of spanner is easier to realize, only need set up corresponding torque sensor on the output shaft, directly read out the moment of torsion of nut can, but this kind of spanner is because continuous output, consequently receives the reaction force great, whole comparatively heavy. The other is an impact wrench, the impact wrench drives a driving part of an impact mechanism through a speed reducer by a prime motor, drives a driven part through engagement of a jaw, and after the rotational striking part of the driving part exceeds the static torque of the wrench, intermittent rotational striking is generated from an output shaft of the driven part, the nut is finally screwed by the periodic rotational striking movement, but the final screwing torque is superposition of multiple impact torque of the driving part on the output shaft of the driven part, and the impact of the axial pressure between a workpiece and the nut is considered, so that the impact wrench can be increased along with screwing, the process is quite complex, and a single torque sensor can not truly and accurately realize the fixed torque output of the impact wrench.
For this purpose, chinese patent CT110238787a discloses a method for detecting, reading and controlling the screwing angle and torque of an impact wrench, and discloses such a scheme as follows: the output shaft of the impact wrench is provided with a detection device for detecting the rotation reversal and rotation angle of the output shaft, and the rotation direction and rotation angle of the output shaft of the driven part are measured, namely, the rotation angle of the output shaft of the driven part, namely, the output angle of the nut can be detected when the impact wrench is used for detecting each impact. The control method comprises the following steps: when the screwing angle is used as a screwing stop condition, the rotation angle in the screwing direction accumulated in the static screwing stage is A, the screwing angle of the output shaft after the start of impact is delta alpha 1-delta alpha n, the counter vibration angle of the output shaft in the reverse screwing direction is delta beta 1-delta beta n, the full screwing angle is An, the preset screwing angle is B, and when an=B, the torque control circuit stops the screwing action of the wrench is calculated by the formula an=A+delta alpha 1+ … … delta alpha n-delta beta 1- … … delta beta n.
In short, the rotation angles of all parts in the action of the impact wrench are recorded through the angle sensor, so that the total output angle A of the impact wrench is calculated, when the output angle is equal to the preset output angle B, the impact wrench is considered to reach the corresponding output torque, and the output wrench is controlled to stop working. The impact wrench has the following problems: the angle sensor belongs to vulnerable parts in the impact wrench, in the prior art, the installation mode of the angle sensor is arranged in the shell of the impact wrench, the disassembly and maintenance are very inconvenient, once the angle sensor is damaged, the impact wrench is required to be completely removed for maintenance, and some users can discard the impact wrench directly, so that the impact wrench is very wasted.
Disclosure of Invention
The invention aims to provide a wrench, which also solves the technical problem that an angle sensor is not easy to detach from a wrench shell in the prior art.
In order to solve the technical problems, the technical scheme in the invention is as follows:
the utility model provides a spanner, includes spanner casing, angle sensor and output shaft, the output shaft include with spanner casing normal even output shaft part of normal even output shaft part detachable connection, the transmission head have be used for with by screwed piece only change complex moment of torsion output, the overhead coaxial line rotation of transmission is equipped with the sensor support, angle sensor include with the sensor rotation part that the transmission head links to each other with set up in be used for measuring on the sensor support sensor fixed part of sensor rotation part.
The transmission head and the normally connected output shaft part are detachably connected through a square tenon structure.
The angle sensor is an off-axis magnetic field angle sensor, the sensor rotating part is an annular magnetic ring fixed on the transmission head, and the sensor fixing part is a magnetic ring induction head arranged on the sensor support.
The angle sensor is a coaxial angle sensor, the sensor rotating part of the angle sensor is a transmission tooth rotationally assembled on the sensor support, the axis of the transmission tooth is parallel to the axis of the transmission head, the periphery of the transmission tooth is meshed with a gear on the periphery of the transmission head for transmission, and the sensor fixing part is a sensor sensing head coaxially arranged with the transmission tooth.
The wrench is an electric fixed torque impact wrench with a torque control circuit, and the angle sensor is in signal connection with the torque control circuit.
The sensor bracket is provided with a sensor battery for supplying power to the angle sensor, and the angle sensor is in signal connection with the torque control circuit through the wireless transmission module.
The wrench comprises a power battery for supplying power to the power mechanism, a rigid sleeve for limiting the rotation of the sensor support is arranged between the wrench shell and the sensor support, a wire is arranged in the rigid sleeve, the wire comprises a signal wire connected with a torque control circuit and a power wire connected with the power battery, one end of the wire, far away from the wrench shell, is connected with a support plug-in end on the sensor support in a butt-plug manner, the power battery supplies power to the angle sensor through the power wire, and a data signal of the angle sensor is transmitted to the torque control circuit through the signal wire.
The end of the sensor support, which is far away from the constant-connection output shaft part, is provided with a support top contact part for being in top contact fit with the surface of the clamped object.
The sensor bracket is hinged with a blocking arm which is used for being matched with a bolt head of a corresponding bolt in a blocking way so as to limit the rotation of the sensor bracket.
The sensor bracket is provided with a bracket stopping part which is used for being matched with the spanner shell and/or the clamped object in a stopping way so as to limit the rotation of the sensor bracket.
The beneficial effects of the invention are as follows: the output shaft comprises a normally connected output shaft part in running fit with the wrench shell and a transmission head detachably connected with the normally connected output shaft part, when the wrench is used, the wrench applies torque to the screwed piece through the normally connected output shaft part and the transmission head, the angle sensor is arranged on the transmission head, that is, the angle sensor is not arranged in the wrench shell as in the prior art, the transmission head can be conveniently detached from the normally connected output shaft part, and if the angle sensor is damaged, the transmission head with the angle sensor only needs to be replaced, the whole wrench is not required to be thrown away, and the use cost is reduced.
Drawings
FIG. 1 is a view showing the use of embodiment 1 of the wrench of the present invention;
FIG. 2 is a schematic view of the impact of the wrench on the torque testing apparatus of FIG. 1;
FIG. 3 is a view showing the use of embodiment 2 of the wrench of the present invention;
FIG. 4 is a view showing the use of embodiment 3 of the wrench of the present invention;
fig. 5 is a use state diagram of embodiment 4 of the wrench in the present invention.
Detailed Description
Embodiment 1 of the wrench is shown in fig. 1 to 2: the wrench is an electric impact wrench capable of realizing constant torque output, the wrench performs intermittent impact screwing on an impacted piece, the wrench comprises an output shaft 3 and an intermittent impact mechanism, the intermittent impact mechanism can drive the output shaft 3 to output rotary torque to the outside, and the intermittent impact mechanism belongs to the prior art and is not described in detail herein. The impact wrench further comprises a torque control circuit and an angle sensor for detecting the rotation angle of the output shaft during each impact action. Item 2 in the drawing shows the wrench housing of the impact wrench.
In the invention, the output shaft 3 comprises a constant connection output shaft part 4 which is in constant transmission connection with the intermittent impact mechanism and a transmission head which is in coaxial line and detachable connection with the constant connection output shaft part, the transmission head in the embodiment is a nut sleeve head 6, the constant connection output shaft part 4 is in rotary fit with the wrench shell 2, the end part of the constant connection output shaft part 4 is a square tenon structure 14, the left end of an inner hole of the nut sleeve head 6 is a square tenon hole which is matched with the square tenon structure, the square tenon structure and the square tenon hole form a square tenon structure which realizes the detachable connection of the constant connection output shaft part and the transmission head, and the detachable connection of the nut sleeve head 6 and the constant connection output shaft part 4 is realized through the rotary stop grafting of the square tenon structure 14 and the square tenon hole. The angle sensor includes a sensor fixing portion 11 and a sensor rotating portion connected to the nut collar so as to be rotatable relative to the sensor fixing portion. The angle sensor in this embodiment is an off-axis magnetic field angle sensor, the sensor rotating part of the off-axis magnetic field angle sensor is an annular magnetic ring 13 coaxially fixed on the nut sleeve 6, and the sensor fixing part 11 of the off-axis magnetic field angle sensor is a magnetic ring induction head. The nut sleeve is provided with a sensor support 12 which is relatively rotated through a bearing, the magnetic ring induction head 11 is arranged on the sensor support 12, when the magnetic ring 13 rotates along with the nut sleeve 6, the magnetic ring induction head 11 can sense the rotation angle and the rotation direction of the magnetic ring 13, and the detection principle of the off-axis magnetic field angle sensor belongs to the prior art and is not described in detail herein. The sensor bracket is provided with a battery for supplying power to the angle sensor, angle value data measured by the angle sensor is transmitted to a torque control circuit of the impact wrench through a wireless transmission module, the wireless transmission module comprises a transmitting module and a receiving module, the transmitting module is arranged on the sensor bracket, and the receiving module is arranged on the torque control circuit. In other embodiments of the invention, the angle data of the angle sensor may also be transmitted to the torque control circuit by wire.
In addition, the impact wrench further comprises an impact sensor, the impact sensor is used for judging the start and the end of the impact of the intermittent impact mechanism on the output shaft, when the output shaft 3 starts to impact outwards, the impact sensor can send pulse signals to the control circuit, so that the torque control circuit starts to record the angle value of the screwing direction generated by the impact, and the counter-vibration angle value of the counter-screwing direction is recorded in the interval of the two impact pulse signals, namely the rotation angle displacement of the output shaft of the impact wrench in the impact process. Impact sensors and torque control circuits are also known in the art and will not be described in detail herein.
The end of the sensor holder 12 remote from the impact wrench is provided with a holder top contact 10 for contact with the object 9 to be held. In practical conditions, the nut 7 needs to be screwed on the bolt 8, and the clamped object 9 is clamped and fixed on the bolt 8 by the nut 7, that is, the clamped object 9 and the bolt 8 are not rotated except the nut. When the impact wrench is used, an operator firstly rotates the nut 7 on the bolt, the specific screwing position of the nut is random, the operator holds the impact wrench by hand, the nut sleeve head 6 is sleeved on the nut 7, meanwhile, the support top contact part 10 can also be propped against the clamped object 9 due to the pressing of the operator, the clamped object 9 limits the sensor support 12, the sensor support 12 cannot rotate, the impact wrench can work, and the operator can operate by only one hand.
The angle sensor measures the rotation angle displacement A1, A2 … … An of the output shaft of the impact wrench when the impact wrench impacts each time, and is characterized in that: when an=b, the impact wrench is stopped, wherein B is obtained as follows:
the method comprises the steps that an impact wrench is used for conducting impact test on a torque testing device, the torque testing device comprises a bolt, a nut and a torque sensor for measuring relative rotation torque of the bolt and the nut, in the impact process of the impact wrench on the bolt or the nut of the torque testing device, the angle sensor is used for measuring rotation angle displacement B1 and B2 … … Bn of an output shaft of the impact wrench when the impact wrench impacts each time, the torque sensor is used for measuring rotation torque T1 and T2 … … Tn of the nut relative to the bolt when the impact wrench impacts each time, the rotation angle displacement of the output shaft of the impact wrench is used for outputting torque Tn, and Bn=B is selected according to a torque design value of an impacted piece.
Under the condition that the working current of the impact wrench is unchanged, as the screwing resistance between the nut 7 and the clamped object 9 is larger and larger along with the screwing of the nut 7, when the nut 7 cannot rotate, the maximum rotation torque is achieved between the nut and the bolt, and at the moment, the rotation angle displacement of the output shaft is zero after each impact of the impact wrench; when the maximum rotation torque is not reached between the nut and the bolt, the output angular displacement of the output shaft is smaller and smaller with each impact of the impact wrench, so that the rotation angular displacement of the output shaft in single impact can be used for representing the output torque of the output shaft.
The specific structure of the torque test device is shown in the figure: the torque testing device comprises a device bracket 15 provided with a torque sensor 19, wherein the torque sensor 19 is coaxially connected with a testing device bolt 16, and the testing device bolt 16 is sleeved with a simulation clamping object 18 and a testing device nut 17. In order to find the value B, the test device nut 17 is screwed by using the impact wrench 1, in the screwing process, the angle sensor of the impact wrench measures the rotation angle displacement B1, B2 … … Bn of the output shaft of the impact wrench when the impact wrench is impacted each time, the torque sensor 19 measures the rotation torque T1, T2 … … Tn, tn of the test device nut relative to the test device bolt when the impact wrench is impacted each time, the corresponding output torque of the impact wrench is Tn when the rotation angle displacement of the output shaft of the impact wrench is Bn, and bn=b is selected according to the torque design value of the impacted piece. For example, if the screwing torque between the nut and the bolt is 400N ·m during operation, and the ninth impact of the impact wrench is 400n·m when the impact test is performed on the torque test device using the impact wrench, the rotation angle displacement B9 corresponding to the output shaft is found when the ninth impact is found correspondingly, and after knowing this B9, the impact wrench can be stopped when the fixed torque value of the impact wrench is set to the rotation angle displacement B9 of the output shaft.
According to the invention, the total rotation angular displacement of the output shaft is not used for representing the output torque of the output shaft in the whole impact process, but the rotation angular displacement generated by the output shaft is used for representing the output torque of the output shaft in a certain time of impact, and the rotation starting point of the nut relative to the bolt does not need to be considered, so that a worker can freely screw the nut on the bolt, the impact wrench can quickly screw the nut to a designated position, the working efficiency is high, and the fixed torque output value is more accurate. In other embodiments of the invention, the releasable connection between the drive head and the constant-velocity output shaft portion may also be achieved by bolts; of course, according to the torsion structure of the screwed piece, the transmission head can also be in a nut sleeve head form, for example, when the torsion structure of the screwed piece is an inner square hole, one end of the transmission head, which is far away from the wrench shell, can be in an outer square head structure; the wrench may not be an impact wrench, such as an electric wrench or a pneumatic wrench capable of outputting continuous power.
Example 2 of the constant torque output control method is as shown in fig. 3: embodiment 2 is different from embodiment 1 in that in this embodiment, a sensor rotating portion 13 of the angle sensor is coaxially disposed with a sensor fixing portion 11, that is, the angle sensor in this embodiment is a coaxial angle sensor, the sensor rotating portion 13 is a sensing gear rotatably mounted on a sensor bracket 12, the periphery of the sensing gear is meshed with a transmission gear on the periphery of a nut sleeve 6 through a transmission gear, the sensor fixing portion 11 is a sensor sensing head, the sensor sensing head is disposed on the sensor bracket 12, when the nut sleeve 6 rotates, the sensor sensing head also rotates correspondingly through the transmission of the transmission gear, namely, the sensor rotating portion 13, the sensor sensing head senses the rotation angle of the sensing gear, and the rotation angle of the nut sleeve is calculated according to the gear transmission ratio of the sensing gear and the nut sleeve.
Example 3 of the constant torque output control method is as shown in fig. 4: embodiment 4 differs from embodiment 1 in that in order to limit the rotation of the sensor holder 12, a blocking arm 25 is hinged to the sensor holder, which blocking arm 25 in use is blocked on the head of the bolt, corresponding to a counter arm, and when the nut runner 6 is rotated, the sensor holder 12 has a counter rotation tendency, but the blocking arm 25 is blocked by the bolt and cannot rotate, so that the sensor holder does not rotate. In other embodiments of the invention: in order to limit the rotation of the sensor holder, it is also possible to stop the sensor holder on the projection of the clamped object and/or on the housing of the impact wrench.
Example 4 of the constant torque output control method is as shown in fig. 5: embodiment 4 differs from embodiment 1 in that no battery for supplying power to the angle sensor is provided on the sensor holder, no holder top contact is provided on the sensor holder 12, the impact wrench further comprises a rigid sleeve 31, a wire is provided in the rigid sleeve, two ends of the wire are a first plugging end 33 and a second plugging end 32 which are vertically arranged in plugging directions, the first plugging end and the second plugging end are fixedly provided at two ends of the rigid sleeve, the plugging direction of the second plugging end 32 is consistent with the axial direction of the nut socket 6, a wrench plugging end which is adapted to plug with the first plugging end is provided on the housing 2 of the impact wrench, a holder plugging end which is adapted to plug with the second plugging end 32 is provided on the sensor holder, in this embodiment, the first plugging end and the second plugging end of the wrench are in a plug structure, the wrench plugging end and the holder are in a jack structure, the power battery 30 is provided with a signal line connected with the torque control circuit and a power line connected with the power battery 30, and a data signal of the angle sensor is transmitted to the torque control circuit through the signal line. The power battery provides power for the lash impact mechanism. The angle data signal of the angle sensor is transmitted to the torque control circuit of the impact wrench through the lead wire in the rigid sleeve, and the rigid sleeve can limit the rotation of the sensor support 12.
Claims (6)
1. The utility model provides a spanner, includes spanner casing, angle sensor and output shaft, its characterized in that: the output shaft comprises a constant connection output shaft part which is in rotary fit with the wrench shell, the output shaft also comprises a transmission head which is detachably connected with the constant connection output shaft part, the transmission head is provided with a torque output end which is in rotary fit with a screwed piece, a sensor bracket is coaxially and rotatably assembled on the transmission head, the angle sensor comprises a sensor rotating part which is connected with the transmission head and a sensor fixing part which is arranged on the sensor bracket and is used for measuring the sensor rotating part,
the angle sensor is arranged in the following two modes: 1) The angle sensor is an off-axis magnetic field angle sensor, the sensor rotating part is an annular magnetic ring fixed on the transmission head, and the sensor fixing part is a magnetic ring induction head arranged on the sensor bracket; 2) The angle sensor is a coaxial angle sensor, the sensor rotating part of the angle sensor is a transmission tooth rotationally assembled on the sensor bracket, the axis of the transmission tooth is parallel to the axis of the transmission head, the periphery of the transmission tooth is meshed with a gear on the periphery of the transmission head for transmission, the sensor fixing part is a sensor sensing head coaxially arranged with the transmission tooth,
the sensor bracket is arranged in the following two modes: 1) The end of the sensor support, which is far away from the constant-connection output shaft part, is provided with a support top contact part for being in top contact fit with the surface of the clamped object; 2) And the sensor bracket is hinged with a blocking arm which is used for being matched with a bolt head of a corresponding bolt in a blocking way so as to limit the rotation of the sensor bracket.
2. The wrench as claimed in claim 1, wherein: the transmission head and the normally connected output shaft part are detachably connected through a square tenon structure.
3. The wrench as claimed in claim 1, wherein: the wrench is an electric fixed torque impact wrench with a torque control circuit, and the angle sensor is in signal connection with the torque control circuit.
4. A wrench as claimed in claim 3, wherein: the sensor bracket is provided with a sensor battery for supplying power to the angle sensor, and the angle sensor is in signal connection with the torque control circuit through the wireless transmission module.
5. A wrench as claimed in claim 3, wherein: the wrench comprises a power battery for supplying power to the power mechanism, a rigid sleeve for limiting the rotation of the sensor support is arranged between the wrench shell and the sensor support, a wire is arranged in the rigid sleeve, the wire comprises a signal wire connected with a torque control circuit and a power wire connected with the power battery, one end of the wire, far away from the wrench shell, is connected with a support plug-in end on the sensor support in a butt-plug manner, the power battery supplies power to the angle sensor through the power wire, and a data signal of the angle sensor is transmitted to the torque control circuit through the signal wire.
6. The wrench of any one of claims 1-4, wherein: the sensor bracket is provided with a bracket stopping part which is used for being matched with the spanner shell and/or the clamped object in a stopping way so as to limit the rotation of the sensor bracket.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010290370 | 2020-04-14 | ||
| CN2020102903709 | 2020-04-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112936156A CN112936156A (en) | 2021-06-11 |
| CN112936156B true CN112936156B (en) | 2024-04-16 |
Family
ID=76231543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110385683.7A Active CN112936156B (en) | 2020-04-14 | 2021-04-10 | Spanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112936156B (en) |
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| CN101890691A (en) * | 2009-04-16 | 2010-11-24 | 前田金属工业株式会社 | wireless data transceiving system |
| CN102183419A (en) * | 2011-03-08 | 2011-09-14 | 苏州通锦精密工业有限公司 | Wheel wrench tester |
| CN201998114U (en) * | 2011-01-18 | 2011-10-05 | 山东同力达智能机械有限公司 | Handheld type fixed-torque electric wrench |
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| CN103068528A (en) * | 2010-08-26 | 2013-04-24 | 丰田自动车株式会社 | Impact tightening tool |
| CN103659704A (en) * | 2013-11-21 | 2014-03-26 | 南通高盛机械制造有限公司 | Multifunctional torque wrench |
| CN205254877U (en) * | 2015-12-11 | 2016-05-25 | 陕西东方航空仪表有限责任公司 | Electric wrench |
| CN107571184A (en) * | 2017-10-13 | 2018-01-12 | 国网浙江省电力公司岱山县供电公司 | The remote-controlled power transmission and transformation electrification in high voltage bolt tightener that torsion is set |
| CN110238787A (en) * | 2019-07-19 | 2019-09-17 | 刘波 | Impact wrench screws angle, the detection of torque, reading and control method |
| CN110281184A (en) * | 2019-07-26 | 2019-09-27 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | It is a kind of to twist spanner again and twist method again |
| CN110303448A (en) * | 2019-07-18 | 2019-10-08 | 中铁十八局集团有限公司 | It is a kind of with positioning and memory function assist installation torque wrench system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20080462A1 (en) * | 2008-03-18 | 2009-09-19 | Atlas Copco Blm Srl | "ELECTRONIC DYNAMOMETRIC KEY WITH REPLACEABLE TORQUE SENSORS" |
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2021
- 2021-04-10 CN CN202110385683.7A patent/CN112936156B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890691A (en) * | 2009-04-16 | 2010-11-24 | 前田金属工业株式会社 | wireless data transceiving system |
| CN102753782A (en) * | 2010-01-07 | 2012-10-24 | 布莱克和戴克公司 | Power screwdriver having rotary input control |
| CN103068528A (en) * | 2010-08-26 | 2013-04-24 | 丰田自动车株式会社 | Impact tightening tool |
| CN201998114U (en) * | 2011-01-18 | 2011-10-05 | 山东同力达智能机械有限公司 | Handheld type fixed-torque electric wrench |
| CN102183419A (en) * | 2011-03-08 | 2011-09-14 | 苏州通锦精密工业有限公司 | Wheel wrench tester |
| CN103659704A (en) * | 2013-11-21 | 2014-03-26 | 南通高盛机械制造有限公司 | Multifunctional torque wrench |
| CN205254877U (en) * | 2015-12-11 | 2016-05-25 | 陕西东方航空仪表有限责任公司 | Electric wrench |
| CN107571184A (en) * | 2017-10-13 | 2018-01-12 | 国网浙江省电力公司岱山县供电公司 | The remote-controlled power transmission and transformation electrification in high voltage bolt tightener that torsion is set |
| CN110303448A (en) * | 2019-07-18 | 2019-10-08 | 中铁十八局集团有限公司 | It is a kind of with positioning and memory function assist installation torque wrench system |
| CN110238787A (en) * | 2019-07-19 | 2019-09-17 | 刘波 | Impact wrench screws angle, the detection of torque, reading and control method |
| CN110281184A (en) * | 2019-07-26 | 2019-09-27 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | It is a kind of to twist spanner again and twist method again |
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| Publication number | Publication date |
|---|---|
| CN112936156A (en) | 2021-06-11 |
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