CN218330360U - Novel big cavity bending resistance moment of torsion sensor - Google Patents
Novel big cavity bending resistance moment of torsion sensor Download PDFInfo
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- CN218330360U CN218330360U CN202222217700.9U CN202222217700U CN218330360U CN 218330360 U CN218330360 U CN 218330360U CN 202222217700 U CN202222217700 U CN 202222217700U CN 218330360 U CN218330360 U CN 218330360U
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Abstract
The utility model relates to the technical field of torque sensors, and discloses a novel large hollow bending moment-resistant torque sensor, which comprises a sensor body, wherein the sensor body is in a ring shape, one end of the sensor body is provided with a fixed mounting surface, the other end of the sensor body is provided with a stressed mounting surface, and a plurality of threaded holes are formed in the stressed mounting surface and the fixed mounting surface; the sensor comprises a sensor body and is characterized in that a strain groove is formed in the outer wall of the sensor body, a plurality of strain gauges are arranged in the strain groove, and a plurality of waist-shaped holes are formed in the upper portion and the lower portion of the strain groove. The torque sensor is large in hollow diameter, the size between the inner hole and the outer diameter is narrow, installation of joints of similar robots is facilitated, meanwhile, the influences of thread pretightening force and bending moment on torque measurement in the installation process can be reduced, and meanwhile waist-shaped holes are dug up and down in the strain tank and used for reducing the influences of the bending moment on torque measurement accuracy.
Description
Technical Field
The utility model relates to a torque sensor technical field especially relates to a novel big hollow bending moment-resisting torque sensor.
Background
Torque sensors, also called torque sensors, and torquemeters, are classified into dynamic and static types, wherein dynamic torque sensors may be called torque sensors, torque speed sensors, non-contact torque sensors, and rotation torque sensors. Torque sensors are the detection of the perception of torsional moments on various rotating or non-rotating mechanical components. The torque sensor converts the physical change of the torque force into an accurate electrical signal. The torque sensor can be applied to manufacture viscometers and electric (pneumatic and hydraulic) torque wrenches, and has the advantages of high precision, fast frequency response, good reliability, long service life and the like. The existing static torque sensors of the same type have small inner holes, complex structure and poor bending moment resistance. Therefore, we propose a new large hollow bending moment-resisting torque sensor to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a novel large hollow bending moment and torque sensor.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a novel large hollow bending moment-resistant torque sensor comprises a sensor body, wherein the sensor body is in a ring shape, a fixed mounting surface is arranged at one end of the sensor body, a stressed mounting surface is arranged at the other end of the sensor body, and a plurality of threaded holes are formed in the stressed mounting surface and the fixed mounting surface;
the sensor comprises a sensor body and is characterized in that a strain groove is formed in the outer wall of the sensor body, a plurality of strain gauges are arranged in the strain groove, and a plurality of waist-shaped holes are formed in the upper portion and the lower portion of the strain groove.
Preferably, the number of the threaded holes in the stress mounting surface and the number of the threaded holes in the fixing mounting surface are three to twenty, and the threaded holes and the strain gauges are arranged in a staggered mode.
Preferably, the number of the strain gauges is eight, and the strain gauges are uniformly distributed around the circle center of the sensor body.
Preferably, the strain gauge is a 1.1HA feather gauge.
Preferably, the number of the kidney-shaped holes is ten to twenty, and a plurality of the kidney-shaped holes are uniformly distributed in a ring shape.
The utility model has the advantages that:
the torque sensor is large in hollow diameter, the size between the inner hole and the outer diameter is narrow, the torque sensor is convenient to install in a joint similar to a robot, meanwhile, the influence of thread pretightening force and bending moment on torque measurement in the installation process can be reduced, meanwhile, kidney-shaped holes are formed in the upper portion and the lower portion of the strain tank and used for reducing the influence of the bending moment on the torque measurement precision, when the bending moment is generated, most stress can be released at the positions of the kidney-shaped holes, only few parts of the stress are transmitted to the strain foil, the influence of the bending moment on the measurement precision is greatly reduced, the strain foil is avoided by threaded holes in the fixed installation surface and the stress installation surface, and the influence of the thread pretightening force on the torque measurement in the installation process can also be reduced.
Drawings
Fig. 1 is a schematic three-dimensional structure diagram of a novel large hollow bending-resistant torque sensor provided by the present invention;
fig. 2 is a schematic structural diagram of a novel large hollow bending-resistant torque sensor according to the present invention;
fig. 3 is a schematic structural diagram of a novel large hollow bending-resistant torque sensor according to the present invention;
fig. 4 isbase:Sub>A cross-sectional view taken atbase:Sub>A-base:Sub>A in fig. 3.
In the figure: 1. a sensor body; 2. fixing the mounting surface; 3. a stressed mounting surface; 4. a threaded hole; 5. a kidney-shaped hole; 6. a strain tank; 7. a strain gauge.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1-4, the novel large hollow bending moment-resistant torque sensor comprises a sensor body 1, wherein the sensor body 1 is in a ring shape, a fixed mounting surface 2 is arranged at one end of the sensor body 1, a stressed mounting surface 3 is arranged at the other end of the sensor body 1, and a plurality of threaded holes 4 are formed in the stressed mounting surface 3 and the fixed mounting surface 2;
offered strain gauge 6 on sensor body 1's the outer wall, be provided with a plurality of foil gauges 7 in the strain gauge 6, foil gauge 7 is 1.1HA feather piece, the quantity of foil gauge 7 is eight, and foil gauge 7 is around sensor body 1's centre of a circle evenly distributed, and strain gauge 6 is last, the below all is provided with a plurality of waist type holes 5, the quantity of screw hole 4 is three to twenty on stress installation face 3 and the fixed mounting face 2, and screw hole 4 staggers with foil gauge 7 and sets up, the quantity of waist type hole 5 is ten to twenty, and a plurality of waist type holes 5 are annular evenly distributed.
In the embodiment, the hollow diameter of the torque sensor body 1 is large, the size between the inner hole and the outer diameter is narrow, the torque sensor is convenient to install at the joint of a similar robot, meanwhile, the influence of the thread pre-tightening force and the bending moment on torque measurement in the installation process can be reduced, meanwhile, waist-shaped holes 5 are dug up and down in the strain grooves 6 and are used for reducing the influence of the bending moment on the torque measurement precision, when the bending moment is generated, most of stress can be released at the positions of the waist-shaped holes 5, only a few parts of stress are transmitted to the strain foils 7, the influence of the bending moment on the measurement precision is greatly reduced, the strain foils 7 are avoided by the threaded holes 4 in the fixed installation surface 2 and the stress installation surface 3, and the influence of the thread pre-tightening force on the torque measurement in the installation process can also be reduced.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. A novel large hollow bending moment resistant torque sensor comprises a sensor body (1) and is characterized in that the sensor body (1) is annular, a fixed mounting surface (2) is arranged at one end of the sensor body (1), a stressed mounting surface (3) is arranged at the other end of the sensor body (1), and a plurality of threaded holes (4) are formed in the stressed mounting surface (3) and the fixed mounting surface (2);
the sensor is characterized in that a strain groove (6) is formed in the outer wall of the sensor body (1), a plurality of strain gauges (7) are arranged in the strain groove (6), and a plurality of waist-shaped holes (5) are formed in the upper portion and the lower portion of the strain groove (6).
2. The novel large-hollow bending-moment-resisting torque sensor as claimed in claim 1, wherein the number of the threaded holes (4) on the stress mounting surface (3) and the fixed mounting surface (2) is three to twenty, and the threaded holes (4) and the strain gauge (7) are arranged in a staggered manner.
3. The novel large-hollow bending-moment-resisting torque sensor as claimed in claim 1, wherein the number of the strain gauges (7) is eight, and the strain gauges (7) are uniformly distributed around the center of the sensor body (1).
4. A novel large-hollow bending-moment-resisting torque sensor according to claim 3, wherein the strain gauge (7) is a 1.1HA feather gauge.
5. The novel large-hollow bending-moment-resisting torque sensor as claimed in claim 1, wherein the number of the kidney-shaped holes (5) is ten to twenty, and a plurality of kidney-shaped holes (5) are uniformly distributed in a ring shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222217700.9U CN218330360U (en) | 2022-08-23 | 2022-08-23 | Novel big cavity bending resistance moment of torsion sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222217700.9U CN218330360U (en) | 2022-08-23 | 2022-08-23 | Novel big cavity bending resistance moment of torsion sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218330360U true CN218330360U (en) | 2023-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222217700.9U Active CN218330360U (en) | 2022-08-23 | 2022-08-23 | Novel big cavity bending resistance moment of torsion sensor |
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| Country | Link |
|---|---|
| CN (1) | CN218330360U (en) |
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2022
- 2022-08-23 CN CN202222217700.9U patent/CN218330360U/en active Active
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