CN209961398U - Standard torque wrench and torque wrench calibrating device - Google Patents
Standard torque wrench and torque wrench calibrating device Download PDFInfo
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- CN209961398U CN209961398U CN201921082043.3U CN201921082043U CN209961398U CN 209961398 U CN209961398 U CN 209961398U CN 201921082043 U CN201921082043 U CN 201921082043U CN 209961398 U CN209961398 U CN 209961398U
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Abstract
The utility model relates to a standard torque wrench and torque wrench calibrating device, standard torque wrench are including executing the torque arm and having the standard torque sensor that first biography torque joint and second biography torque joint, and second biography torque joint is used for linking to each other with the utensil of being examined, and standard torque wrench still includes the bellows of arranging with standard torque sensor coaxial line, and the bellows splines to be connected between first biography torque joint and executing the torque arm. The utility model provides a produce the skew force easily and lead to measurement accuracy's problem during biography power between the transmission part that standard torque sensor links to each other among the prior art.
Description
Technical Field
The utility model relates to a standard moment of torsion spanner and moment of torsion spanner calibrating device in the calibration examination field.
Background
The standard torque wrench is a device for calibrating a torque sensor directly or in some tools, and the existing standard torque wrench is a "standard torque wrench" disclosed in chinese patent CN202582833U, and includes a torque applying arm, a sensor, i.e. a standard sensor, and a connector of an instrument to be tested, and the sensor includes an upper connector connected to the torque applying arm, a strain sensing area, and a lower connector for connecting to the connector of the instrument to be tested. The standard sensor is a torque sensor with higher precision than a torque sensor in a detected instrument, an upper joint and a lower joint are used for transmitting torque, and a strain sensing area acted by a torque difference between the upper joint and the lower joint generates strain so as to measure the torque.
When the device is used, the connector of the detected device is connected with the detected device, the torque applying arm applies torque to the detected device through the sensor and the connector of the detected device, and the device is calibrated by comparing the sensor indicating value of the detected device with the indicating value of the standard sensor.
The torque wrench calibrating device is an appliance for calibrating a torque wrench, the existing torque wrench calibrating device is a 'torque wrench calibrating device' disclosed by Chinese patent CN107941419A, the torque wrench calibrating device comprises a detecting table provided with a torque sensor, and further comprises an adapter arranged on a detecting sleeve through a bearing, one end of the adapter is connected with the torque sensor through a square tenon structure, and the other end of the adapter is provided with a torque transmission structure used for being connected with the torque wrench to be detected.
When the torque calibration device is used, the torque to be detected spanner applies torque to the torque sensor through the adapter, and the indicating value of the torque to be detected spanner is compared with the indicating value of the torque sensor to calibrate the torque to be detected spanner.
In the torque wrench calibration device, the standard torque sensor is easily subjected to other deflection forces besides torque due to the force application problem and the matching tolerance of an operator, so that the calibration accuracy is affected.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a standard torque wrench and torque wrench calibrating device to produce the skew force easily and lead to measurement accuracy's problem when passing power between standard torque sensor and its continuous transmission part among the solution prior art.
For solving the technical problem, the utility model discloses the technical scheme of standard moment of torsion spanner as follows:
a standard torque wrench comprises a torque applying arm and a standard torque sensor with a first torque transmission joint and a second torque transmission joint, wherein the second torque transmission joint is used for being connected with a detected device, the standard torque wrench further comprises a corrugated pipe which is coaxially arranged with the standard torque sensor, and the corrugated pipe is connected between the first torque transmission joint and the torque applying arm in a rotation stopping mode.
The first torque transmission joint and the second torque transmission joint are arranged up and down, the corrugated pipe is positioned at the periphery of the standard torque sensor, and the torque applying arm is in rotating fit with the second torque transmission joint through a rotating bearing which is coaxially arranged with the standard torque sensor.
The corrugated pipe is a metal corrugated pipe.
The bearing inner ring of the rotating bearing is fixed on the outer side of the second torque transmission joint, the torque applying arm is fixedly provided with a lower yoke plate, the lower yoke plate is provided with a mounting hole which is coaxially arranged with the standard torque sensor, and the bearing outer ring of the rotating bearing is fixed on the inner hole wall of the mounting hole.
The lower end of the corrugated pipe is connected with the torque applying arm in a rotation stopping way by being fixed on the lower connecting plate, and the upper end of the corrugated pipe is connected with the first torque transmission joint in a rotation stopping way by the upper connecting plate which is arranged in parallel with the lower connecting plate.
The utility model discloses well moment of torsion spanner calibrating device's technical scheme does:
the torque wrench calibrating device comprises a device seat provided with a standard torque sensor, wherein the standard torque sensor comprises a first torque transmission joint and a second torque transmission joint fixed with the device seat, the torque wrench calibrating device further comprises a corrugated pipe and a transmission joint, the corrugated pipe is coaxially arranged with the standard torque sensor, the transmission joint is used for being connected with a torque wrench to be tested, and the corrugated pipe is connected between the transmission joint and the first torque transmission joint in a rotation stopping mode.
The corrugated pipe is a metal corrugated pipe.
The device seat comprises an upper supporting arm, a lower supporting arm and a vertical arm connected between the upper supporting arm and the lower supporting arm, the upper supporting arm, the vertical arm and the lower supporting arm form a C-shaped structure, the transmission joint is rotatably assembled on the upper supporting arm, and the second transmission joint is fixed on the lower supporting arm.
The transmission joint is rotatably assembled on the upper support arm through a rotating bearing.
The lower end of the corrugated pipe is fixedly connected with the lower connecting plate to realize rotation stopping connection with the first torsion joint, the transmission joint comprises an upper connecting plate arranged in parallel with the lower connecting plate, and the upper end of the corrugated pipe is fixed on the upper connecting plate.
The utility model has the advantages that: the utility model discloses in, pass through the bellows with standard torque sensor and execute the torque arm, the transmission joint links to each other, for example to standard torque wrench, execute the torque arm and apply the moment of torsion to standard torque sensor's first torque joint through the bellows, the bellows can transmit the moment of torsion, but when executing the torque arm and having the ascending incline action of upper and lower side, the flexible power of action that can avoid this side of bellows is used on first torque joint, utilize the characteristic of bellows, execute the torque arm and only the moment of torsion can transmit for standard torque sensor, and then transmit and be examined the utensil, guarantee that standard torque sensor does not receive the torque arm of executing and produce the incline effort, thereby guarantee the calibration precision.
Drawings
FIG. 1 is a state diagram of a standard torque wrench according to one embodiment of the present invention;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a diagram illustrating an example of the torque wrench calibrating device according to the present invention.
Detailed Description
The embodiment of the standard torque wrench of the present invention is shown in fig. 1 ~ 2, which comprises a torque applying arm 9 and a standard torque sensor 14 having a first torque transmission joint 3 and a second torque transmission joint 13, wherein the end of the second torque transmission joint 13 is provided with a transmission square tenon 11 for connecting with a detected device 12, and the standard torque sensor belongs to the prior art and is not described in detail herein.
The torque applying arm 9 is in running fit with the second torque transmission joint through a rotating bearing arranged coaxially with the standard torque sensor 14, specifically, a lower connecting plate 10 is fixedly arranged on the torque applying arm, a mounting hole arranged coaxially with the standard torque sensor is formed in the lower connecting plate, a bearing outer ring 7 of the rotating bearing is fixed on the inner hole wall of the mounting hole, and a bearing inner ring 8 of the rotating bearing is fixed on the periphery of the second torque transmission joint 13. The standard torque wrench further comprises a corrugated pipe 5 which is arranged coaxially with the standard torque sensor, the corrugated pipe 5 is located outside the standard torque sensor 14, the corrugated pipe 5 is connected with the first torsion joint 3 and the torsion applying arm 9 in a rotation stopping manner, in the embodiment, the corrugated pipe is a stainless steel corrugated pipe, for example, taixin TX-005 stainless steel corrugated pipe produced by taixin corrugated pipe limited of the city of anyu, the lower end of the corrugated pipe 5 is fixed on the lower connecting plate 10 through welding to realize rotation stopping connection with the torsion applying arm 9, the upper end of the first torsion joint 3 is fixed on the upper connecting plate 1 which is arranged in parallel with the lower connecting plate through a key block 2, and the upper end of the corrugated pipe 14 is connected with the first torsion joint in a rotation stopping manner through welding and fixing with the upper connecting plate 1.
When the device is used, the transmission square tenon on the second torque transmission joint is inserted into a square tenon hole of the device 12 to be tested, such as a torque sensor to be tested, an operator applies torque to the corrugated pipe through the torque applying arm, the corrugated pipe transmits the torque to the first torque transmission joint through the upper connecting plate, then the torque is transmitted to the torque sensor to be tested through the second torque transmission joint, and the reading of the torque sensor to be tested is compared with the reading of the standard torque sensor to calibrate the torque sensor to be tested. In this embodiment, when the operator applies torque to the torque applying arm, a bias force other than the torque may occur, for example, the operator cannot horizontally twist the torque applying arm, the torque applying arm may receive an upward or downward force, and the bellows may buffer the upward or downward force by using the high torque rigidity of the bellows, so as to transmit only the torque, and ensure that the standard torque sensor only receives the torque, thereby ensuring the measurement and calibration accuracy. In other embodiments of the present invention, the corrugated tube may also be a carbon steel or aluminum corrugated tube, and certainly, the corrugated tube may also be a rubber or steel plastic-lined corrugated tube; the fixation among the corrugated pipe, the upper connecting plate and the lower connecting plate can also be realized through screws; when the torque input structure on the detected device is not a square tenon hole, the corresponding structure on the second torque transmission joint can also be changed, for example, when the torque input structure of the detected device is a square tenon, the square tenon hole matched with the square tenon is arranged on the second torque transmission joint; the rotating bearing between the torque applying arm and the second torque transmission joint can be omitted, and the torque applying arm and the second torque transmission joint are arranged at intervals; the bellows may also be located on the upper side of the standard torque sensor, in which case the lower end of the bellows is fixedly connected to the first torsion joint and the force applying arm may be fixed to the upper end of the bellows.
An embodiment of the torque wrench calibration device is shown in FIG. 3: including being provided with standard torque sensor 6's device seat 3, the device seat includes support arm 1, under bracing arm 4 and connects in the perpendicular arm 2 between support arm 1, under bracing arm 4, goes up support arm 1, perpendicular arm 2 and under bracing arm 4 and constitutes C-shaped structure. The standard torque sensor comprises a first torque transmission joint 7 and a second torque transmission joint 5 fixed with a device seat, the standard torque sensor belongs to the prior art, in the embodiment, the second torque transmission joint 5 is fixed on the lower supporting arm 4, the upper supporting arm 1 is rotatably assembled with a transmission joint 13 which is coaxially arranged with the standard torque sensor and is used for being connected with a torque spanner to be detected through a rotating bearing 11, and the transmission joint is provided with a square tenon hole 12 matched with the square tenon of the torque spanner to be detected. The torque wrench calibration device further comprises a corrugated pipe 9 which is arranged coaxially with the standard torque sensor 6, wherein the corrugated pipe in the embodiment is a metal corrugated pipe. A lower connecting plate 8 is fixed on the first torsion joint 7, the lower end of the corrugated pipe 9 is connected with the first torsion joint in a rotation stopping manner by being welded and fixed with the lower connecting plate 8, the transmission joint comprises an upper connecting plate 10 which is arranged in parallel with the lower connecting plate, and the upper end of the corrugated pipe 9 is welded and fixed on the upper connecting plate 10.
During the use, the square tenon head 15 that operating personnel will be examined torque spanner 14 inserts the square tenon hole 12 that the transmission connects, operating personnel applys the moment of torsion to the transmission connects through examining torque spanner, this moment of torsion passes through the bellows and transmits for standard torque sensor, utilize the high moment of torsion rigidity characteristics of bellows, only the moment of torsion passes through bellows 9 and transmits 6 on the standard torque sensor, the skew effort in the upper and lower direction is given the buffering by the elastic deformation of bellows and is fallen, thereby guarantee that standard torque sensor only receives the moment of torsion effort, guarantee the moment of torsion side and measure the accuracy, and then guarantee the calibration accuracy to the torque spanner. In other embodiments of the present invention: the fixed connection between the corrugated pipe and the upper and lower connecting plates can also be realized by screws; the transmission joint and the device frame can be independent from each other, namely, the transmission joint and the device frame are not matched, and the device frame does not need to be in a C-shaped structure.
Claims (10)
1. A standard torque wrench comprises a torque applying arm and a standard torque sensor with a first torque transmission joint and a second torque transmission joint, wherein the second torque transmission joint is used for being connected with a detected device, and the standard torque wrench is characterized in that: the standard torque wrench also comprises a corrugated pipe which is coaxially arranged with the standard torque sensor, and the corrugated pipe is connected between the first torsion joint and the torsion applying arm in a rotation stopping way.
2. The standard torque wrench of claim 1, wherein: the first torque transmission joint and the second torque transmission joint are arranged up and down, the corrugated pipe is positioned at the periphery of the standard torque sensor, and the torque applying arm is in rotating fit with the second torque transmission joint through a rotating bearing which is coaxially arranged with the standard torque sensor.
3. The standard torque wrench of claim 1, wherein: the corrugated pipe is a metal corrugated pipe.
4. The standard torque wrench of claim 2, wherein: the bearing inner ring of the rotating bearing is fixed on the outer side of the second torque transmission joint, the torque applying arm is fixedly provided with a lower yoke plate, the lower yoke plate is provided with a mounting hole which is coaxially arranged with the standard torque sensor, and the bearing outer ring of the rotating bearing is fixed on the inner hole wall of the mounting hole.
5. The standard torque wrench of claim 4, wherein: the lower end of the corrugated pipe is connected with the torque applying arm in a rotation stopping way by being fixed on the lower connecting plate, and the upper end of the corrugated pipe is connected with the first torque transmission joint in a rotation stopping way by the upper connecting plate which is arranged in parallel with the lower connecting plate.
6. Torque wrench calibrating device, including the device seat that is provided with standard torque sensor, standard torque sensor includes first biography twist joint and connects its characterized in that with the fixed second biography twist joint of device seat: the torque wrench calibrating device further comprises a corrugated pipe and a transmission joint, wherein the corrugated pipe is coaxially arranged with the standard torque sensor, the transmission joint is used for being connected with the torque wrench to be tested, and the corrugated pipe is connected between the transmission joint and the first torque joint in a rotation stopping mode.
7. The torque wrench calibration device of claim 6, wherein: the corrugated pipe is a metal corrugated pipe.
8. The torque wrench calibration device of claim 6, wherein: the device seat comprises an upper supporting arm, a lower supporting arm and a vertical arm connected between the upper supporting arm and the lower supporting arm, the upper supporting arm, the vertical arm and the lower supporting arm form a C-shaped structure, the transmission joint is rotatably assembled on the upper supporting arm, and the second transmission joint is fixed on the lower supporting arm.
9. The torque wrench calibration device of claim 8, wherein: the transmission joint is rotatably assembled on the upper support arm through a rotating bearing.
10. The torque wrench calibration device according to claim 6 or claim 6 ~ 9, wherein the first torque transmitting joint has a lower link plate secured thereto, the lower end of the bellows is secured to the lower link plate to effect a rotation-stop connection with the first torque transmitting joint, the drive joint includes an upper link plate juxtaposed with the lower link plate, and the upper end of the bellows is secured to the upper link plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921082043.3U CN209961398U (en) | 2019-07-11 | 2019-07-11 | Standard torque wrench and torque wrench calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921082043.3U CN209961398U (en) | 2019-07-11 | 2019-07-11 | Standard torque wrench and torque wrench calibrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209961398U true CN209961398U (en) | 2020-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921082043.3U Active CN209961398U (en) | 2019-07-11 | 2019-07-11 | Standard torque wrench and torque wrench calibrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209961398U (en) |
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2019
- 2019-07-11 CN CN201921082043.3U patent/CN209961398U/en active Active
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