CN205449358U - Answer modification torque sensor with from function of decoupling - Google Patents
Answer modification torque sensor with from function of decoupling Download PDFInfo
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- CN205449358U CN205449358U CN201521110135.XU CN201521110135U CN205449358U CN 205449358 U CN205449358 U CN 205449358U CN 201521110135 U CN201521110135 U CN 201521110135U CN 205449358 U CN205449358 U CN 205449358U
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- elastomer
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- output shaft
- torque sensor
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Abstract
The utility model relates to an answer modification torque sensor with from function of decoupling, including the output shaft, form in the inside amplifier assembly of output shaft with installing at the epaxial elastomer subassembly of output according to symmetrical structure distributed connection for four. The utility model discloses an elastomer has simple structure, small, output sensitivity height, machining, thermal treatment advantage such as easy. The utility model discloses an aspect has an amplification effect to the value of meeting an emergency of elastomer, and the another party has and carries out the function of decoupling with produced the meeting an emergency of other load except that the moment of torsion. Detect through the experiment, the utility model discloses do the contrast with the known modification torque sensor that answers, it is synthesized the precision and improves obviously. Concrete parameter as follows: one way loading precision <= 0.5%F. S. Combined loading precision <= 1.5%F. S.. The utility model discloses realize the automatically removed of coupling between the dimension, reduce it and to the adverse effect that brought the elastomer workspace, improve the comprehensive precision of sensor.
Description
Technical field
This utility model belongs to electronics sensing equalizer technology field, relates to a kind of strain type torque sensor that anti-coupling is strong, synthesis precision is high.
Background technology
Strain ga(u)ge type sensor is to use most a kind of torque sensors the most both at home and abroad.It uses the traditional method at rotating shaft surface patch foil gauge, utilizes suitable circuit to obtain signal, is then analyzed processing, and this kind of sensor is widely used in the torque measurement of static state and low speed rotation system.But it is poor that currently known strain type torque sensor exists anti-coupling performance, when by Action of Combined Loads, its certainty of measurement will significantly decline, it is impossible to meets and uses requirement.
Utility model content
The purpose of this utility model is that the problem that there is prior art is solved, it is provided that the strain type torque sensor with decoupling function certainly that a kind of anti-coupling is strong, synthesis precision is high.
For achieving the above object, the technical solution adopted in the utility model is as follows:
nullA kind of strain type torque sensor having from decoupling function，Including output shaft (1)、Elastomeric components (2)、Amplifier block (3) three part，Elastomeric components (2) is made up of elastomer (21) and foil gauge (22)，Elastomer (21) has symmetrical structure，Elastomer (21) is provided with foil gauge (22)，Amplifier block (3) is made up of amplifier shell (32) and connector (31)，Amplifier shell (32) is provided with connector (31)，Described elastomeric components (2) has four，Output shaft (1) is outside is formed around elastomeric components (2)，The angle of each two elastomeric components (2) is 90 degree，Entirety symmetrically structure distribution，Amplifier block (3) is in semi-circular，Output shaft (1) is internal is provided with amplifier block (3)，Foil gauge (22) on elastomeric components (2) is connected with connector (31) in amplifier block (3) by wire.
The elastomer (21) of elastomeric components (2) and output shaft (1), by bayonet fittings, use Type of Welding to connect.
The connector (31) of amplifier block (3) is threaded connection and is fixed in amplifier shell (32), and amplifier shell (32) is threaded connection and is installed on output shaft (1) inside.
Two foil gauges (22), eight foil gauge (22) composition wheatstone bridge configuration it are pasted with in described each elastomer (21) maximum strain district.
Compared with prior art, this utility model has the advantage that as described below with technique effect:
1, have employed in this utility model elastomer assembly based on the symmetrical structure elastomer designed by stress concentration theory, elastomeric components structure is as shown in Figure 3.The strain region of this structure concentrates on elastomer center.The elastomer torsional deflection when structure stand under load, the torsional strain of generation is job demand value, belongs to shear stress type sensor.
This elastomer has the advantages such as simple in construction, volume is little, output sensitivity is high, machining, heat treatment are easy.
2, in this utility model, four elastomeric components symmetrically modes are installed on output shaft surface, and its setting angle is as shown in Figure 5.Being pasted with eight foil gauges on four elastomers altogether, eight foil gauge composition Wheatstone bridges, it connects bridge mode as shown in Figure 6.This connects bridge mode and on the one hand the strain value of elastomer is had amplification, and the opposing party has and will strain the function carrying out decoupling produced by other load in addition to moment of torsion.
Through experimental tests, this utility model contrasts with known strain type torque sensor, and its synthesis precision is obviously improved.Design parameter is as follows: single channel loading accuracy≤0.5%F.S.；Combined Loading precision≤1.5%F.S..
Accompanying drawing explanation
Fig. 1 is the structural representation of one specific embodiment of this utility model.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the structural representation of 3 elastomeric components.
Fig. 4 is the structural representation of amplifier block.
Fig. 5 is elastomeric components installation site schematic diagram.
Fig. 6 is bridge structure schematic diagram of the present utility model.
Detailed description of the invention
Below with reference to accompanying drawing, this utility model content is described further, but actual fabrication structure of the present utility model is not limited in following embodiment.
See accompanying drawing 1, 2, described in the utility model have from the strain type torque sensor of decoupling function by output shaft 1, four elastomeric components 2 and amplifier block 3 three part composition, elastomeric components 2 is made up of elastomer 21 and foil gauge 22, elastomer 21 has symmetrical structure, elastomer 21 is provided with foil gauge 22, amplifier block 3 is made up of amplifier shell 32 and connector 31, amplifier shell 32 is provided with connector 31, described elastomeric components 2 has four, output shaft 1 is outside is formed around elastomeric components 2, the angle of each two elastomeric components 2 is 90 degree, entirety symmetrically structure distribution, elastomer 21 and the output shaft 1 of elastomeric components 2 pass through bayonet fittings, employing Type of Welding connects.Amplifier block 3 is in semi-circular, and output shaft 1 is internal is provided with amplifier block 3, and the connector 31 of amplifier block 3 is threaded connection and is fixed in amplifier shell 32, and amplifier shell 32 is threaded connection and is installed on output shaft 1 inside.Foil gauge 22 on elastomeric components 2 is connected with connector 31 in amplifier block 3 by wire.
The structure of this utility model elastomeric components 2 is as it is shown on figure 3, include elastomer 21 and foil gauge 22, and elastomer 21 has symmetrical structure, is pasted with two foil gauges 22 in described each elastomer 21 maximum strain district, and eight foil gauges 22 form wheatstone bridge configuration.
The structure of this utility model amplifier block 3 as shown in Figure 4, is made up of amplifier shell 32 and connector 31 two parts.
This utility model elastomeric components 2 installation site on output shaft 1 is as shown in Figure 5.
This utility model electric bridge connect bridge mode as shown in Figure 6.
The making step of this utility model product is:
1, elastomer 21 working surface of machined process is carried out, polishes, rules, sensitivity foil gauge 22 is pasted on after the processing step such as brush coating process surface.
2, elastomeric components 2 is embedded in output shaft 1 surface, is positioned by pin, uses welding manner to connect.
3, amplifier block 3 is connected by screw and is arranged on output shaft 1 inside.
4, resistance R1, R2, R3, R4, R5, R6, R7, the R8 utilizing wire to be constituted by eight sensitive foil gauges 22 forms Wheatstone bridge road, then completes electrical connection with connector 31.
Claims (4)
- null1. the strain type torque sensor having from decoupling function，It is characterized in that: include output shaft (1)、Elastomeric components (2)、Amplifier block (3) three part，Elastomeric components (2) is made up of elastomer (21) and foil gauge (22)，Elastomer (21) has symmetrical structure，Elastomer (21) is provided with foil gauge (22)，Amplifier block (3) is made up of amplifier shell (32) and connector (31)，Amplifier shell (32) is provided with connector (31)，Described elastomeric components (2) has four，Output shaft (1) is outside is formed around elastomeric components (2)，The angle of each two elastomeric components (2) is 90 degree，Entirety symmetrically structure distribution，Amplifier block (3) is in semi-circular，Output shaft (1) is internal is provided with amplifier block (3)，Foil gauge (22) on elastomeric components (2) is connected with connector (31) in amplifier block (3) by wire.
- A kind of strain type torque sensor having from decoupling function the most according to claim 1, it is characterized in that: the elastomer (21) of elastomeric components (2) and output shaft (1), by bayonet fittings, use Type of Welding to connect.
- A kind of strain type torque sensor having from decoupling function the most according to claim 1, it is characterized in that: the connector (31) of amplifier block (3) is threaded connection and is fixed in amplifier shell (32), amplifier shell (32) is threaded connection and is installed on output shaft (1) inside.
- A kind of strain type torque sensor having from decoupling function the most according to claim 1, it is characterized in that: in described each elastomer (21) maximum strain district, be pasted with two foil gauges (22), eight foil gauge (22) composition wheatstone bridge configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521110135.XU CN205449358U (en) | 2015-12-29 | 2015-12-29 | Answer modification torque sensor with from function of decoupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521110135.XU CN205449358U (en) | 2015-12-29 | 2015-12-29 | Answer modification torque sensor with from function of decoupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205449358U true CN205449358U (en) | 2016-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521110135.XU Active CN205449358U (en) | 2015-12-29 | 2015-12-29 | Answer modification torque sensor with from function of decoupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205449358U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111801559A (en) * | 2018-04-09 | 2020-10-20 | 日本电产科宝电子株式会社 | Fixing device of strain sensor and torque sensor using same |
-
2015
- 2015-12-29 CN CN201521110135.XU patent/CN205449358U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111801559A (en) * | 2018-04-09 | 2020-10-20 | 日本电产科宝电子株式会社 | Fixing device of strain sensor and torque sensor using same |
| EP3779390A4 (en) * | 2018-04-09 | 2022-01-05 | Nidec Copal Electronics Corporation | Strain sensor fixing device, and torque sensor employing same |
| US11333564B2 (en) | 2018-04-09 | 2022-05-17 | Nidec Copal Electronics Corporation | Strain sensor fixing device for a torque sensor to prevent sensor performance decrease |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |