CN204115928U - Torque monitoring device - Google Patents
Torque monitoring device Download PDFInfo
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- CN204115928U CN204115928U CN201420529887.9U CN201420529887U CN204115928U CN 204115928 U CN204115928 U CN 204115928U CN 201420529887 U CN201420529887 U CN 201420529887U CN 204115928 U CN204115928 U CN 204115928U
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 20
- 238000012545 processing Methods 0.000 claims abstract description 42
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 239000003990 capacitor Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a torque monitoring device, the device includes: the device comprises a first permanent magnet, a second permanent magnet, a power supply unit, a signal processing unit, a sensor unit, a wireless transceiving unit and a computer; the S pole of the first permanent magnet and the N pole of the second permanent magnet are respectively fixed on two symmetrical sides of the rotating shaft; the power supply unit, the signal processing unit and the sensor unit are sequentially connected on a transverse central line of the rotating shaft, and the power supply unit supplies power to the signal processing unit by cutting magnetic lines of force of the first permanent magnet and the second permanent magnet; the signal processing unit is connected with the wireless transceiving unit in a first internet access mode and sends the collected torque signal of the rotating shaft to the wireless transceiving unit; the wireless transceiver unit is connected with the computer through a second internet access mode, transmits the torque signal of the rotating shaft to the computer, and monitors the torque signal of the rotating shaft.
Description
Technical Field
The utility model relates to an automatic monitoring technology field of oil equipment especially relates to a moment of torsion monitoring devices.
Background
In the oil field, it is necessary to measure the torque of rotating mechanical equipment under specific circumstances and requirements. For devices without torque, such as pipeline fuel pumps, it is necessary to add torque monitoring devices to such devices. When the torque monitoring device is installed, the torque monitoring device is convenient to install and guaranteed and needs to stably operate for a long time.
In a conventional torque measuring device, a battery is generally used for supplying power to a detection circuit, or a transformer formed by an induction coil is used for supplying power to the detection circuit. Although the conventional torque measuring device can detect torque, once some rotating mechanical equipment is started, the continuous operation time is long, and if the torque detecting device only provided with a battery is adopted, long-time monitoring cannot be realized, and if the torque detecting device only provided with a transformer is adopted, the starting monitoring of a rotating shaft cannot be realized. Therefore, the existing torque detection device cannot monitor the complete operation process of the rotating shaft for a long time.
SUMMERY OF THE UTILITY MODEL
To the problem that prior art exists, the utility model discloses a various embodiments provide a moment of torsion monitoring devices, can monitor the complete operation process of rotation axis for a long time.
The technical scheme of the utility model is realized like this:
the utility model provides a torque monitoring device sets up on the rotation axis, the device includes: the device comprises a first permanent magnet, a second permanent magnet, a power supply unit, a signal processing unit, a sensor unit, a wireless transceiving unit and a computer; wherein,
the S pole of the first permanent magnet and the N pole of the second permanent magnet are respectively fixed on two symmetrical sides of the rotating shaft;
the power supply unit, the signal processing unit and the sensor unit are sequentially connected on a transverse central line of the rotating shaft, and the power supply unit supplies power to the signal processing unit by cutting magnetic lines of force of the first permanent magnet and the second permanent magnet;
the signal processing unit is connected with the wireless transceiving unit in a first internet access mode and sends the collected torque signal of the rotating shaft to the wireless transceiving unit;
the wireless receiving and transmitting unit is connected with the computer through a second internet access mode, transmits the torque signal of the rotating shaft to the computer, and monitors the torque signal of the rotating shaft through the computer.
In the above solution, the two symmetrical sides of the rotation axis include: the upper end and the lower end of the rotating shaft or the left end and the right end of the rotating shaft.
In the above aspect, the sensor unit includes: the circuit comprises a first resistor, a second resistor, a third resistor and a fourth resistor; wherein,
one end of the first resistor is connected with a positive terminal of a power supply and one end of the third resistor, and the other end of the first resistor is connected with one end of the second resistor and the first signal output end;
the other end of the third resistor is connected with one end of the fourth resistor and the second signal output end;
the other end of the second resistor is connected with the negative electrode terminal of the power supply and the other end of the fourth resistor.
In the above scheme, the first resistor is a resistance strain gauge; the third resistor is an adjustable resistor.
In the above scheme, the signal processing unit includes: the wireless on-chip system comprises a first amplifier, a second amplifier, a third amplifier, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor and a wireless on-chip system chip; wherein,
a first negative input end of the first amplifier is connected with a first signal output end, and a first positive input end of the first amplifier is connected with one end of the fifth resistor and one end of the sixth resistor;
the other end of the sixth resistor is connected with one end of the seventh resistor and a second negative electrode input end of the second amplifier; a second positive input end of the second amplifier is connected with a second signal output end;
a second output end of the second amplifier is connected with the other end of the seventh resistor and one end of the ninth resistor;
the other end of the ninth resistor is connected with one end of the eleventh resistor and a third positive electrode input end of the third amplifier; the other end of the eleventh resistor is connected with a signal ground;
a third negative input end of the third amplifier is connected with the other end of the eighth resistor and one end of the tenth resistor; and a third output end of the third amplifier is connected with the other end of the tenth resistor and the first pin of the wireless system-on-chip.
In the above scheme, the sixth resistor is an adjustable resistor.
In the above scheme, the power supply unit includes: the circuit comprises a coil, a rectifier bridge, a capacitor, a battery and a voltage conversion chip; wherein,
a first lead of the coil is connected with a second pin of the rectifier bridge, and a second lead of the coil is connected with a third pin of the rectifier bridge;
a fourth pin of the rectifier bridge is connected with one end of the capacitor, the positive end of the battery and the voltage input end of the voltage conversion chip;
a fifth pin of the rectifier bridge is connected with the other end of the capacitor, the negative electrode end of the battery, a sixth pin of the voltage conversion chip and a signal ground;
and a seventh pin of the voltage conversion chip is a voltage output end.
In the above scheme, the first internet access mode is different from the second internet access mode; wherein,
the first internet access mode comprises the following steps: the signal processing unit is connected with the wireless transceiving unit through a wireless network;
the second internet access mode comprises the following steps: the wireless receiving and transmitting unit is connected to a Universal Serial Bus (USB) interface of the computer through a data line to transmit data.
The embodiment of the utility model provides a torque monitoring device, the device includes: the device comprises a first permanent magnet, a second permanent magnet, a power supply unit, a signal processing unit, a sensor unit, a wireless transceiving unit and a computer; the S pole of the first permanent magnet and the N pole of the second permanent magnet are respectively fixed on two symmetrical sides of the rotating shaft; the power supply unit, the signal processing unit and the sensor unit are sequentially fixed on a transverse central line of the rotating shaft, and the power supply unit supplies power to the signal processing unit by cutting magnetic lines of force of the first permanent magnet and the second permanent magnet; the signal processing unit is connected with the wireless transceiving unit in a first internet access mode and sends the collected torque signal of the rotating shaft to the wireless transceiving unit; the wireless transceiver unit is connected with the computer in a second internet access mode, transmits the torque signal of the rotating shaft to the computer, and monitors the torque signal of the rotating shaft through the computer; therefore, when the rotating shaft rotates, the coil of the power supply unit cuts magnetic lines of force to obtain electric energy so as to supply power to the signal processing unit, and long-term monitoring of the torque of the rotating shaft is achieved. In addition, the non-contact power supply mode has no mechanical abrasion and is convenient to install and maintain.
Drawings
Fig. 1 is a schematic view of an overall structure of a torque monitoring device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a sensor unit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a signal processing unit according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a power supply unit according to an embodiment of the present invention;
fig. 5 is a schematic view of an operating principle of the torque monitoring device provided by the embodiment of the present invention.
Description of reference numerals:
11-a rotating shaft; 121-a first permanent magnet; 122-a second permanent magnet; 13-a power supply unit; 14-a sensor unit; 15-a signal processing unit; 16-a wireless transceiver unit; 17-a computer; r1 — first resistance; r2 — second resistance; r3 — third resistance; r4-fourth resistor; uo 1-first signal output; uo 2-second signal output; u1 — first amplifier; u2 — second amplifier; u3 — third amplifier; r5-fifth resistor; r6-sixth resistance; r7 — seventh resistor; r8 — eighth resistance; r9 — ninth resistor; r10 — tenth resistance; r11 — eleventh resistor; 31-wireless system-on-a-chip; 311-first pin; 41-a coil; 42-a rectifier bridge; 421-second pin; 422-third pin; 423-fourth pin; 424-fifth pin; 43-capacitance; 44-a battery; 441-the positive terminal of the battery; 442-the negative terminal of the battery; 45-voltage conversion chip; 451-sixth pin; 452-a seventh pin; 453-eighth pin.
Detailed Description
The utility model discloses a various embodiments, in order to monitor the complete operation process of rotation axis for a long time, provide a moment of torsion monitoring devices, set up on the rotation axis, its characterized in that, the device includes: the device comprises a first permanent magnet, a second permanent magnet, a power supply unit, a signal processing unit, a sensor unit, a wireless transceiving unit and a computer; the S pole of the first permanent magnet and the N pole of the second permanent magnet are respectively fixed on two symmetrical sides of the rotating shaft; the power supply unit, the signal processing unit and the sensor unit are sequentially fixed on a transverse central line of the rotating shaft, and the power supply unit supplies power to the signal processing unit by cutting magnetic lines of force of the first permanent magnet and the second permanent magnet; the signal processing unit is connected with the wireless transceiving unit in a first internet access mode and sends the collected torque signal of the rotating shaft to the wireless transceiving unit; the wireless receiving and transmitting unit is connected with the computer through a second internet access mode, transmits the torque signal of the rotating shaft to the computer, and monitors the torque signal of the rotating shaft through the computer.
The technical solution of the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.
An embodiment of the utility model provides a torque monitoring device fixes on rotation axis 11, as shown in fig. 1, the device includes: a first permanent magnet 121, a second permanent magnet 122, a power supply unit 13, a sensor unit 14, a signal processing unit 15, a wireless transceiving unit 16, and a computer 17; wherein,
the S pole of the first permanent magnet 121 and the N pole of the second permanent magnet 122 are respectively fixed at two symmetrical sides of the rotating shaft 11;
the power supply unit 13, the sensor unit 14 and the signal processing unit 15 are sequentially connected on a transverse central line of the rotating shaft 11, and the power supply unit 13 supplies power to the signal processing unit 15 by cutting magnetic lines of force of the permanent magnet 12;
the signal processing unit 15 is connected with the wireless transceiver unit 16 through a first internet access mode, and transmits the acquired torque signal of the rotating shaft 11 to the wireless transceiver unit 16;
the wireless transceiver 16 is connected to the computer 17 through a second internet access method, and transmits the torque signal of the rotating shaft 11 to the computer 17, and the computer 17 monitors the torque signal of the rotating shaft 11.
Here, the symmetrical sides of the rotation axis 11 include: the upper and lower ends of the rotating shaft 11, or the left and right ends of the rotating shaft 11. The installation structure of the torque monitoring device provided in fig. 1 of this embodiment is exemplified by that the S pole of the first permanent magnet 121 is fixed near the upper end of the rotating shaft 11, and the N pole of the second permanent magnet 122 is fixed near the lower end of the rotating shaft 11.
The mounting structure of the torque monitoring device may further include: the S pole of the first permanent magnet 121 is fixed to the left side near the rotating shaft 11, and the N pole of the second permanent magnet 122 is fixed to the right side near the rotating shaft 11.
The sensor unit 14 may be fixed to the rotary shaft 11 by spot welding; for converting the collected torque signal of the rotating shaft 11 into an electrical signal that can be collected by the signal processing unit 15. The power supply unit 13 and the signal processing unit 15 can be fixed by spot welding or fixed on the rotating shaft 11 by glue and a fastening belt; here, it is also possible to weld a support seat on the base of the rotating shaft 11, and place the first permanent magnet 121 and the second permanent magnet 122 in corresponding grooves in the support seat.
Here, as shown in fig. 2, the sensor unit 14 includes: the circuit comprises a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4; wherein,
one end of the R1 is connected with a positive power supply terminal and one end of the R3, and the other end of the R1 is connected with one end of the R2 and a first signal output end UO 1; so that the R1 is in series with R2.
The other end of the R3 is connected with one end of the R4 and a second signal output end Uo 2; the other end of the R2 is connected with a negative power terminal and the other end of the R4; so that the R3 is in series with R4.
The series circuit formed by the R1 and the R2 is connected in parallel with the series circuit formed by the R3 and the R4. The voltage provided by the positive terminal of the power supply is 5V. The R1 is a resistance strain gauge; the R3 is an adjustable resistor; and the R2 and the R4 are common resistors.
When the sensor unit 14 converts the torque signal of the rotating shaft 11 into an electrical signal, the signal processing unit 15 collects the electrical signal to transmit the electrical signal to the computer 17 through the wireless transceiver unit 16.
Here, as shown in fig. 3, the signal processing unit 15 includes: a first amplifier U1, a second amplifier U2, a third amplifier U3, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11 and a wireless system-on-chip 31; wherein,
a first negative input end of the first amplifier U1 is connected with a first signal output end UO1, and a first positive input end of the first amplifier U1 is connected with one end of the R5 and one end of the R6;
the other end of the R6 is connected with one end of the R7 and a second negative input end of the second amplifier U2; the second positive input end of the second amplifier is connected with a second signal output end Uo 2;
a second output terminal of the second amplifier U2 is connected to the other end of the R7 and one end of the R9;
the other end of the R9 is connected with one end of the R11 and a third positive input end of the third amplifier U3; the other end of the R11 is connected with a signal ground;
a third negative input end of the third amplifier U3 is connected with the other end of the R8 and one end of the R10; the third output terminal of the third amplifier U3 is connected to the other terminal of the R10 and the first pin 311 of the wireless system-on-chip 31.
The first amplifier U1, the second amplifier U2, and the third amplifier U3 may include: single operational amplifier, instrument amplifier, and triple operational amplifier.
The power supply unit 13 is connected with the signal processing unit 15, and when the signal processing unit 15 starts to work, the power supply unit 13 supplies power to the signal processing unit 15.
Specifically, as shown in fig. 4, the power supply unit 13 includes: a coil 41, a rectifier bridge 42, a capacitor 43, a battery 44 and a voltage conversion chip 45; wherein,
a first lead of the coil 41 is connected with a second pin 421 of the rectifier bridge 42, and a second lead of the coil 41 is connected with a third pin 422 of the rectifier bridge 42;
a fourth pin 423 of the rectifier bridge 42 is connected to one end of the capacitor 43, the positive terminal 441 of the battery 44, and a sixth pin 451 of the voltage conversion chip 45, where the sixth pin 451 is a voltage input terminal of the voltage conversion chip 45;
the fifth pin 424 of the rectifier bridge 42 is connected to the other end of the capacitor 43, the negative terminal 442 of the battery 44, the seventh pin 452 of the voltage conversion chip 45, and signal ground;
the eighth pin 453 of the voltage conversion chip 45 is a voltage output terminal.
Here, the output voltage of the voltage output terminal of the voltage conversion chip 45 is 3.3V, and the first amplifier U1, the second amplifier U2, the third amplifier U3 and the wireless system-on-chip 31 of the signal processing unit 15 are powered; the battery 44 may be a lithium battery; the rectifier bridge is a diode rectifier bridge.
The coil 41 is parallel to the transverse axes of the rotating shaft 11, the first permanent magnet 121, and the second permanent magnet 122, and when the rotating shaft 11 starts to rotate, the coil 41 cuts the magnetic lines of force of the first permanent magnet 121 and the second permanent magnet 122 to generate electric energy. The coil 41 shape may include: rectangular or oval. In order to ensure the dynamic balance of the rotating shaft 11, the coil 41 may be divided into two bundles, wherein one bundle is installed on the same side of the power supply unit 13, the other bundle is installed on the other side of the power supply unit 13, and finally the power supply unit 13 is fixed on the rotating shaft 11 by using glue and a fastening tape.
Here, the torque monitoring device provided in the present embodiment operates as shown in fig. 5. Specifically, when the rotating shaft 11 starts to rotate, since the power supply unit 13 includes the battery 44, power can be supplied to the rotating shaft 11 when it is started; when the rotating shaft 11 starts to rotate, the coil 41 cuts the magnetic force line to obtain electric energy, so as to supply power to the signal processing unit 15. Here, since the sensor unit 14 is fixed at the driven end of the rotating shaft 11, when the rotating shaft 11 is forced to rotate and deform, the sensitive grid of the resistance strain gauge R1 of the sensor unit 14 is deformed, and the resistance value of the sensitive grid changes accordingly. The magnitude of the sensitive grid resistance value variation and the torque of the rotating shaft 11 form a certain proportional relation, so that the torque of the rotating shaft 11 can be obtained by measuring the magnitude of the sensitive grid resistance value variation.
After the torque signal of the sensor unit 14 is converted into a proportional analog signal, the signal processing unit 15 collects the analog signal, the wireless system-on-chip 31 sends the collected analog signal to the wireless transceiver unit 16 through a first internet access mode, and the wireless transceiver unit 16 sends the analog signal to the computer 17 through a second internet access mode; and the computer 17 performs analysis processing according to the received analog signal data to finally obtain the stress and torque value of the stressed rotating shaft 11. The first internet access mode is different from the second internet access mode, and the first internet access mode is that the wireless system-on-chip 31 establishes connection with the wireless transceiver unit 16 through a wireless network; the second internet access mode comprises the following steps: the wireless transceiver unit 16 is connected to a Universal Serial Bus (USB) interface of the computer 17 through a data line, so as to implement data transmission. Here, the second internet access method may further include: the wireless transceiver unit 16 is connected to the computer 17 through a network cable.
The embodiment of the utility model provides a torque monitoring device, utilize the battery that installs additional in the power supply unit can provide the required electric energy when the rotation axis starts, in the rotation axis operation process, adopt the permanent magnet generator principle, realize non-contact power supply, no mechanical wear; wireless data transmission is utilized, wiring is not needed, and installation and maintenance are facilitated; the starting and long-term monitoring of the torque of the rotating shaft are realized.
Additionally, the embodiment of the utility model provides a torque monitoring device not only is applicable to the torque measurement of rotating equipment, also is applicable to the stress measurement of non-rotatory atress component, in the aspect of monitoring the component atress for a long time, has comparatively extensive application scope.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A torque monitoring device disposed on a rotating shaft, the device comprising: the device comprises a first permanent magnet, a second permanent magnet, a power supply unit, a signal processing unit, a sensor unit, a wireless transceiving unit and a computer; wherein,
the S pole of the first permanent magnet and the N pole of the second permanent magnet are respectively fixed on two symmetrical sides of the rotating shaft;
the power supply unit, the signal processing unit and the sensor unit are sequentially connected on a transverse central line of the rotating shaft, and the power supply unit supplies power to the signal processing unit by cutting magnetic lines of force of the first permanent magnet and the second permanent magnet;
the signal processing unit is connected with the wireless transceiving unit in a first internet access mode and sends the collected torque signal of the rotating shaft to the wireless transceiving unit;
the wireless receiving and transmitting unit is connected with the computer through a second internet access mode, transmits the torque signal of the rotating shaft to the computer, and monitors the torque signal of the rotating shaft through the computer.
2. The apparatus of claim 1, wherein the symmetrical sides of the rotation axis comprise: the upper end and the lower end of the rotating shaft or the left end and the right end of the rotating shaft.
3. The apparatus of claim 1, wherein the sensor unit comprises: the circuit comprises a first resistor, a second resistor, a third resistor and a fourth resistor; wherein,
one end of the first resistor is connected with a positive terminal of a power supply and one end of the third resistor, and the other end of the first resistor is connected with one end of the second resistor and the first signal output end;
the other end of the third resistor is connected with one end of the fourth resistor and the second signal output end;
the other end of the second resistor is connected with the negative electrode terminal of the power supply and the other end of the fourth resistor.
4. The apparatus of claim 3, wherein the first resistance is a resistive strain gauge; the third resistor is an adjustable resistor.
5. The apparatus of claim 1, wherein the signal processing unit comprises: the wireless on-chip system comprises a first amplifier, a second amplifier, a third amplifier, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor and a wireless on-chip system chip; wherein,
a first negative input end of the first amplifier is connected with a first signal output end, and a first positive input end of the first amplifier is connected with one end of the fifth resistor and one end of the sixth resistor;
the other end of the sixth resistor is connected with one end of the seventh resistor and a second negative electrode input end of the second amplifier; a second positive input end of the second amplifier is connected with a second signal output end;
a second output end of the second amplifier is connected with the other end of the seventh resistor and one end of the ninth resistor;
the other end of the ninth resistor is connected with one end of the eleventh resistor and a third positive electrode input end of the third amplifier; the other end of the eleventh resistor is connected with a signal ground;
a third negative input end of the third amplifier is connected with the other end of the eighth resistor and one end of the tenth resistor; and a third output end of the third amplifier is connected with the other end of the tenth resistor and the first pin of the wireless system-on-chip.
6. The apparatus of claim 5, wherein the sixth resistance is an adjustable resistance.
7. The apparatus of claim 1, wherein the power supply unit comprises: the circuit comprises a coil, a rectifier bridge, a capacitor, a battery and a voltage conversion chip; wherein,
a first lead of the coil is connected with a second pin of the rectifier bridge, and a second lead of the coil is connected with a third pin of the rectifier bridge;
a fourth pin of the rectifier bridge is connected with one end of the capacitor, the positive end of the battery and the voltage input end of the voltage conversion chip;
a fifth pin of the rectifier bridge is connected with the other end of the capacitor, the negative electrode end of the battery, a sixth pin of the voltage conversion chip and a signal ground;
and a seventh pin of the voltage conversion chip is a voltage output end.
8. The apparatus of claim 1, wherein the first internet-surfing mode is different from the second internet-surfing mode; wherein,
the first internet access mode comprises the following steps: the signal processing unit is connected with the wireless transceiving unit through a wireless network;
the second internet access mode comprises the following steps: the wireless receiving and transmitting unit is connected to a Universal Serial Bus (USB) interface of the computer through a data line to transmit data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420529887.9U CN204115928U (en) | 2014-09-15 | 2014-09-15 | Torque monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420529887.9U CN204115928U (en) | 2014-09-15 | 2014-09-15 | Torque monitoring device |
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| Publication Number | Publication Date |
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| CN204115928U true CN204115928U (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420529887.9U Expired - Lifetime CN204115928U (en) | 2014-09-15 | 2014-09-15 | Torque monitoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403341A (en) * | 2015-12-09 | 2016-03-16 | 江苏磁谷科技股份有限公司 | Torque/power measuring device |
-
2014
- 2014-09-15 CN CN201420529887.9U patent/CN204115928U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403341A (en) * | 2015-12-09 | 2016-03-16 | 江苏磁谷科技股份有限公司 | Torque/power measuring device |
| CN105403341B (en) * | 2015-12-09 | 2018-10-19 | 江苏磁谷科技股份有限公司 | A kind of armature-moment-testing device |
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| TR01 | Transfer of patent right |
Effective date of registration: 20211215 Address after: Room 08-10, 6 / F, block a, No. 5, Dongtucheng Road, Chaoyang District, Beijing 100013 Patentee after: National Petroleum and natural gas pipeline network Group Co.,Ltd. Address before: 100007 Oil Mansion, 9 North Avenue, Dongcheng District, Beijing, Dongzhimen Patentee before: PetroChina Company Limited |
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Granted publication date: 20150121 |