CN112683439A - Straight-tube T-shaped inter-dimension decoupling two-dimensional wireless passive sensor - Google Patents
Straight-tube T-shaped inter-dimension decoupling two-dimensional wireless passive sensor Download PDFInfo
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- CN112683439A CN112683439A CN202011617493.5A CN202011617493A CN112683439A CN 112683439 A CN112683439 A CN 112683439A CN 202011617493 A CN202011617493 A CN 202011617493A CN 112683439 A CN112683439 A CN 112683439A
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Abstract
The invention discloses a straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor, which comprises: the bending moment bearing joint comprises a bending moment bearing joint, an upper fixing plate, a first bending moment fixing element, an upper first ball element fixing body, an upper bending moment movable ball, an upper second ball element fixing body, a bending moment detection element, an upper supporting sleeve, a second bending moment fixing element, a middle bending moment fixing plate, a lower supporting sleeve, an axial force detection element, a lower bearing joint, a lower copper bead with holes and an upper copper bead with holes. The straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor can simultaneously detect the bending force component and the pulling pressure component in the coupling force, namely, the coupling force is structurally decoupled; and does not need to be connected into a power supply line or collect data through a wired interface; the method is applied to the fields of machine tools, biology and medicine, can greatly reduce the problem that a plurality of wired transmissions are needed when the sensor outputs data, and greatly promotes the simplicity of information transmission.
Description
Technical Field
The invention relates to a straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor, and belongs to the technical field of sensors.
Background
The sensor is generally composed of a sensing element and an elastic element. The multi-dimensional force sensor is a force sensor capable of detecting force and moment information in two directions and above simultaneously, and is widely applied to the fields of robots, industrial manufacturing, medical treatment and health, biological engineering and the like.
Two-dimensional and even multidimensional force sensors at the present stage are mainly divided into resistance strain type, piezoelectric type and capacitance type force sensors, and the two-dimensional and even multidimensional force sensors are simple in structure, sensitive and high in precision. The sensor is constructed by attaching or otherwise mounting a strain sensitive element to a shaped elastic element. When force acts on the sensor, the elastic element in the sensor deforms, the strain sensitive element mounted on the elastic element also deforms, the resistance value of the strain sensitive element changes along with the deformation of the elastic element, and then the change of the resistance value is converted into voltage change output through the conversion circuit, so that the force can be determined according to the voltage change.
However, in the prior art, when the sensor is subjected to both bending stress and tensile and compressive stress, the existing solution is to compensate and decouple the strain gauge by combining the strain gauge into a bridge, and the decoupling capability of the bending stress and the tensile and compressive stress is not realized in the mechanical structure.
The existing two-dimensional/multidimensional sensor requires to use a conducting wire to monitor the voltage change in real time due to the structural characteristics of the sensor, and even if the wireless sensor is used for information transmission, the capacity of a battery is limited, so that the wireless passive long-term dynamic monitoring of the signal change cannot be realized.
Disclosure of Invention
The present invention aims to provide a straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor which solves at least one of the above mentioned technical problems.
The technical scheme adopted by the invention for solving the technical problems is as follows: a straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor comprises: the bending moment force-bearing joint comprises a bending moment force-bearing joint, an upper fixing plate, a first bending moment fixing element, an upper first ball element fixing body, an upper bending moment movable ball, an upper second ball element fixing body, a bending moment detection element, an upper supporting sleeve, a second bending moment fixing element, a middle bending moment fixing plate, a lower supporting sleeve, an axial force detection element, a lower force-bearing joint, a lower copper bead with holes and an upper copper bead with holes;
the bending moment bearing joint is slidably arranged in a central hole of the first bending moment fixing element, and the first bending moment fixing element limits the rotation of the bending moment bearing joint;
the upper first ball element fixing body is provided with a central through hole along an axis, the lower surface of the upper first ball element fixing body is provided with an upper ball socket, the upper ball socket is communicated with the central through hole, the upper second ball element fixing body is fixed on the upper first ball element fixing body, the upper surface of the upper second ball element fixing body is provided with a lower ball socket, the lower ball socket of the upper second ball element fixing body and the upper ball socket of the upper first ball element fixing body jointly form an accommodating space for accommodating the upper bending moment movable ball, the upper bending moment movable ball is arranged in the accommodating space, and the lower end of the bending moment bearing joint penetrates through the central through hole and is fixed on the upper bending moment movable ball;
the lower end of the upper second ball element fixing body is fixed with the upper end of an axial force detection element, and the lower end of the axial force detection element is fixed on the lower force bearing joint; the axial force detection element is adhered with a magnetostrictive material;
the lower end of the lower supporting sleeve is fixed on the lower force bearing joint, and the upper end of the lower supporting sleeve is fixed with a middle bending moment fixing plate;
the lower end of the upper supporting sleeve is fixed on the upper surface of the middle bending moment fixing plate, and the upper end of the upper supporting sleeve is fixed with an upper fixing plate;
the upper fixing plate is provided with a central hole along the axis of the upper fixing plate, and the axis of the central hole of the upper fixing plate is superposed with the axis of the bending moment bearing joint; the diameter of the central hole of the upper fixing plate is larger than that of the upper end of the bending moment bearing joint;
the bending moment detection elements are at least three and comprise an upper thread section, an upper fixing part, a detection part, a lower fixing part and a lower thread section which are sequentially connected, wherein the upper fixing part and the lower fixing part are cylindrical, and the detection part is flat; and a magnetostrictive material is adhered to the detection part;
the first bending moment fixing element is provided with a first through hole, the diameter of the first through hole is larger than the diameter of an upper threaded section of the bending moment detection element and smaller than the diameter of an upper fixing part, the upper threaded section is provided with a nut, and the first bending moment fixing element is arranged between the upper fixing part of the bending moment detection element and the nut;
the upper fixing plate is provided with a through hole, the through hole of the upper fixing plate is formed into a chamfer, an upper thread section of the bending moment detection element penetrates through the through hole of the upper fixing plate, an upper copper bead with holes is arranged on the part of the upper thread section above the upper fixing plate, and the upper copper bead with holes is arranged in the chamfer of the through hole of the upper fixing plate;
the center of the middle bending moment fixing plate is provided with a center hole, and the upper second ball element fixing body is slidably arranged in the center hole of the middle bending moment fixing plate;
the second bending moment fixing element is arranged on the middle bending moment fixing plate, a central hole is formed in the middle of the second bending moment fixing element, and the upper second ball element fixing body is slidably arranged in the central hole of the second bending moment fixing element;
a through hole is formed in the second bending moment fixing element, and the diameter of the through hole of the second bending moment fixing element is larger than that of the lower threaded section of the bending moment detection element and smaller than that of the lower fixing part;
the bending moment detection device is characterized in that a through hole is formed in the middle bending moment fixing plate, the diameter of the through hole of the middle bending moment fixing plate is larger than that of a lower thread section of the bending moment detection element, the lower end of the through hole of the middle bending moment fixing plate is in a chamfer shape, the lower thread section of the bending moment detection element penetrates through the through hole of the second bending moment fixing element and the through hole of the middle bending moment fixing plate, and a lower copper bead with holes is arranged on the part, located at the lower part of the middle bending moment fixing plate, of the lower thread section of the bending moment detection element and is located in a chamfer of the through.
Optionally, the bending moment force-bearing joint includes a disk portion, a first protrusion disposed on a lower surface of the disk portion, and a screw formed at a lower end of the first protrusion, and the central through hole of the first bending moment fixing element is matched with the first protrusion.
Optionally, the cross section of the first protrusion and the cross section of the central hole of the first bending moment fixing element are both rectangular with rounded corners.
Optionally, the disc part, the first protrusion and the screw have the same axial line.
Optionally, a middle portion of the axial force detecting element is thinner than upper and lower ends of the axial force detecting element, and a magnetostrictive material is adhered to the middle portion of the axial force detecting element.
Optionally, the diameter of the central through hole of the upper first ball element fixing body is larger than the diameter of the lower end of the bending moment force-bearing joint.
Optionally, the material of the lower supporting sleeve is acrylic.
Optionally, the upper support sleeve is made of acrylic.
Optionally, the number of the bending moment detection elements is four.
Optionally, the upper bending moment movable ball is in clearance fit with the upper first ball element fixing body and the upper second ball element fixing body.
The invention has the following beneficial effects: the straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor can simultaneously detect the bending force component and the pulling pressure component in the coupling force, namely, the coupling force is structurally decoupled; and does not need to be connected into a power supply line or collect data through a wired interface; the method is applied to the fields of machine tools, biology and medicine, can greatly reduce the problem that a plurality of wired transmissions are needed when the sensor outputs data, and greatly promotes the simplicity of information transmission.
Drawings
Fig. 1 is a schematic view of a three-dimensional structure of a straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor.
FIG. 2 is a cross-sectional view of a three-dimensional structure of a straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor.
Fig. 3 is a quarter sectional view of a three-dimensional structure of the straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor.
Fig. 4 is an exploded view of a three-dimensional structure part of the straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor.
Fig. 5 is a disassembled sectional view of the three-dimensional structure of the straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor.
FIG. 6 is a perspective structural sectional view of a bending moment force-sensitive area of the straight-tube T-shaped inter-dimension decoupling two-dimensional wireless passive sensor.
Fig. 7 is a sectional view of the axial force-receiving sensitive area of the straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor.
Fig. 8 is an exploded view of the components of the axial force-receiving sensitive area of the straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor according to the present invention.
The notation in the figures means: 1-bending moment bearing joint; 2-upper fixing plate; 3-a first bending moment fixing element; 4-an upper first ball element fixture; 5-upper bending moment movable ball; 6-an upper second ball element fixture; 7-bending moment detection element; 8-an upper support sleeve; 9-a second bending moment fixing element; 10-middle bending moment fixing plate; 11-a lower support sleeve; 12-an axial force detection element; 13-lower bearing joint; 14-copper beads with holes at the lower part; 15-copper beads with holes on the upper part.
Detailed Description
The technical solution of the present invention is further described below with reference to the following embodiments and the accompanying drawings.
Example 1
The embodiment provides a decoupling zero two-dimensional wireless passive sensor between straight section of thick bamboo T type dimension, especially a decoupling zero wireless passive force/moment sensor between straight section of thick bamboo T type dimension, and it includes: the bending moment force-bearing joint comprises a bending moment force-bearing joint 1, an upper fixing plate 2, a first bending moment fixing element 3, an upper first ball element fixing body 4, an upper bending moment movable ball 5, an upper second ball element fixing body 6, a bending moment detection element 7, an upper supporting sleeve 8, a second bending moment fixing element 9, a middle bending moment fixing plate 10, a lower supporting sleeve 11, an axial force detection element 12, a lower force-bearing joint 13, a lower copper bead with holes 14 and an upper copper bead with holes 15.
The bending moment force bearing joint 1 comprises a disc part, a first bump arranged on the lower surface of the disc part and a screw formed at the lower end of the first bump, wherein the cross section of the first bump is rectangular, preferably, four feet of the rectangular bump can be formed into round corners, namely, the cross section of the first bump is rectangular with round corners.
The outer surface of the screw is formed into a male thread, and the disk part, the first lug and the axis of the screw are on the same straight line.
The center of the first bending moment fixing element 3 is provided with a center through hole matched with the cross section of the first bump, the first bump is slidably arranged in the center through hole of the first bending moment fixing element 3, so that the bending moment force-bearing joint 1 can axially move relative to the first bending moment fixing element 3, and the rotation of the bending moment force-bearing joint 1 is limited by the first bending moment fixing element 3. Preferably, the contact surface between the first bending moment fixing element 3 and the bending moment bearing joint 1 can be lubricated by adding grease.
Preferably, the bending moment force-bearing joint 1 is in clearance fit with the first bending moment fixing element 3, so that the bending moment force-bearing joint 1 can move axially relative to the first bending moment fixing element 3 by a small axial force.
An upper bending moment movable ball 5 is fixed at the lower end of the bending moment force bearing joint 1, wherein the upper bending moment movable ball 5 is integrally spherical and is provided with a threaded hole, and the upper bending moment movable ball 5 is fixed at the lower end of the bending moment force bearing joint 1 in a mode that a screw of the bending moment force bearing joint 1 is screwed into the threaded hole.
The upper first ball element fixing body 4 is provided with a central through hole along the axis of the upper first ball element fixing body 4, the lower surface of the upper first ball element fixing body 4 is provided with an upper ball socket, and the upper ball socket is communicated with the central through hole, in this embodiment, the diameter of the central through hole is larger than that of the screw of the bending moment force bearing joint 1, so that when the upper bending moment force bearing joint 5 is arranged in the ball socket of the upper first ball element fixing body 4, the screw of the bending moment force bearing joint 1 passes through the central through hole and is fixed on the upper bending moment force bearing ball 5.
The upper second ball element fixing body 6 is fixed to the upper first ball element fixing body 4, and a lower ball socket is opened on an upper surface of the upper second ball element fixing body 6, and the lower ball socket of the upper second ball element fixing body 6 and the upper ball socket of the upper first ball element fixing body 4 together form an accommodating space for accommodating the upper bending moment moving ball, so that the upper bending moment moving ball 5 is disposed in the accommodating space, and preferably, the upper bending moment moving ball 5 is in clearance fit with the upper first ball element fixing body 4 and the upper second ball element fixing body 6.
The lower end of the upper second ball element fixing body 6 is fixed with the upper end of an axial force detection element 12, and the lower end of the axial force detection element is fixed on the lower force bearing joint 13.
In this embodiment, the axial force detection element 12 is integrally i-shaped, and the middle part is an axial force sensitive region, that is, the middle part of the axial force detection element 12 is thinner than the upper end and the lower end of the axial force detection element 12, so that the sensitivity of the straight-barrel T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor is higher, and the middle part (the axial force sensitive region) of the axial force detection element 12 is adhered with a magnetostrictive material.
The lower end of the lower supporting sleeve 11 is fixed on the lower force bearing joint 13, and the upper end of the lower supporting sleeve 11 is fixed with a middle bending moment fixing plate 10. In this embodiment, the material of the lower supporting sleeve 11 is acrylic, so as to reduce electromagnetic shielding.
Preferably, the lower supporting sleeve 11 is in screw connection with the middle bending moment fixing plate 10, the lower supporting sleeve 11 is provided with eight threaded holes, four of the eight threaded holes are used for being matched with the lower force bearing joint 13, the lower supporting sleeve 11 is connected with the lower force bearing joint 13 through screws, and the other four threaded holes are used for connecting the upper part and the lower part of the straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor.
The lower end of the upper supporting sleeve 8 is fixed on the upper surface of the middle bending moment fixing plate 10, and the upper end of the upper supporting sleeve 8 is fixed with the upper fixing plate 2. In this embodiment, the upper supporting sleeve 8 is made of acrylic material to reduce electromagnetic shielding.
The upper fixing plate 2 is provided with a center hole along the axis of the upper fixing plate 2, and the axis of the center hole of the upper fixing plate 2 is coincident with the axis of the bending moment bearing joint 1.
The diameter of the central hole of the upper fixing plate 2 is larger than that of the upper end disc of the bending moment bearing joint 1, and the bending moment bearing joint 1 can move in the central hole of the upper bending moment fixing plate 2.
The bending moment detecting elements 7 are at least three, for example, four bending moment detecting elements 7 may be provided in the present embodiment; in this embodiment, the bending moment detecting element 7 includes an upper threaded section, an upper fixing section, a detecting section, a lower fixing section, and a lower threaded section, which are connected in sequence, wherein the upper fixing section and the lower fixing section are cylindrical, and the detecting section is flat; so that the size of the sensing part is smaller than the size of the upper and lower fixing parts, and a magnetostrictive material is attached on the sensing part (bending moment sensitive area).
A first through hole is formed in the first bending moment fixing element 3, the diameter of the first through hole is larger than that of the upper thread section of the bending moment detection element 7 and smaller than that of the upper fixing portion, a nut is arranged on the upper thread section, and the first bending moment fixing element 3 is arranged between the upper fixing portion of the bending moment detection element 7 and the nut.
Preferably, the upper end of the first through-hole is formed as a chamfer, and the nut is located in the chamfer to limit the movement of the first bending moment fixing element 3 in the length direction of the bending moment detecting element 7 by the upper fixing portion of the bending moment detecting element 7 and the nut, and to allow a certain axial and radial movement of the first bending moment fixing element 3.
A through hole is formed in the upper fixing plate 2, the through hole of the upper fixing plate 2 is formed into a chamfer, an upper thread section of the bending moment detection element 7 penetrates through the through hole of the upper fixing plate 2, an upper copper bead 15 with holes is arranged on a part of the upper thread section above the upper fixing plate 2, and the upper copper bead 15 with holes is arranged in the chamfer of the through hole of the upper fixing plate 2.
Preferably, the diameter of the through hole of the upper fixing plate 2 is larger than the diameter of the upper threaded section of the bending moment detecting element 7, so that the bending moment detecting element 7 has a certain movement margin relative to the upper fixing plate 2.
A center hole is formed in the center of the middle bending moment fixing plate 10, the upper second ball element fixing body 6 is slidably disposed in the center hole of the middle bending moment fixing plate 10, and preferably, the upper second ball element fixing body 6 is in clearance fit with the middle bending moment fixing plate 10.
In this embodiment, the second bending moment fixing element 9 is disposed on the middle bending moment fixing plate 10, a central hole is formed in the middle of the second bending moment fixing element 9, the upper second ball element fixing body 6 is slidably disposed in the central hole of the second bending moment fixing element 9, and preferably, the upper second ball element fixing body 6 is in clearance fit with the second bending moment fixing element 9.
A through hole is formed in the second bending moment fixing element 9, and the diameter of the through hole of the second bending moment fixing element 9 is larger than that of the lower threaded section of the bending moment detection element 7 and smaller than that of the lower fixing part, so that the lower fixing part is abutted to the second bending moment fixing element 9.
The middle bending moment fixing plate 10 is provided with a through hole, the diameter of the through hole of the middle bending moment fixing plate 10 is larger than that of the lower thread section of the bending moment detection element 7, the lower end of the through hole of the middle bending moment fixing plate 10 is in a chamfer shape, the lower thread section of the bending moment detection element 7 penetrates through the through hole of the second bending moment fixing element 9 and the through hole of the middle bending moment fixing plate 10, and the lower thread section of the bending moment detection element 7 is located at the lower part of the middle bending moment fixing plate 10 and is provided with a lower copper bead with holes 14, so that the lower copper bead with holes is located in the chamfer of the through hole of the middle bending moment fixing plate 10, and certain radial and axial movement allowance is provided for the.
When the straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor is used, the bending moment force-bearing connector 1 at the upper end of the straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor can be fixed to a piece to be detected, and the lower force-bearing connector 13 is fixed to the piece to be detected, so that only extrusion force is applied to the bending moment detection element 7 under the action of external bending moment, deformation can be generated on the bending moment detection element 7, and meanwhile, magnetostrictive materials are pasted on the bending moment detection element 7, and detection of the bending moment can be achieved.
When the straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor is used, the bending moment force-bearing connector 1 at the upper end of the straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor can be fixed to a piece to be detected, and the lower force-bearing connector 13 is fixed to the piece to be detected, so that under the action of external axial force, dimensional axial tension/pressure on the axial force detection element 12 can be generated, deformation can be generated on the axial force detection element 12, meanwhile, magnetostrictive materials are pasted on the axial force detection element 12, and detection of the axial force can be achieved.
That is to say, in this embodiment, the bending moment force-bearing joint 1 is an axial force and bending moment stress input end of the straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor; the lower force bearing joint 13 is the output end of the straight-cylinder T-shaped inter-dimension decoupling two-dimensional wireless passive sensor.
When the straight-tube T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor is subjected to coupling force, a bending moment component is input through the bending moment bearing joint 1, the bending moment bearing joint 1 and the first bending moment fixing element 3 are in small clearance fit, the bending moment bearing joint 1 drives the first bending moment fixing element 3 to perform axial and radial combined motion together, the first bending moment fixing element 3 and the bending moment detection element 7 are in clearance fit, and meanwhile, the bending moment detection element 7 is fixed on the upper fixing plate 2 through an upper thread section and an upper copper bead with holes 15, so that the first bending moment fixing element 3 is driven by the bending moment bearing joint 1 to downwards extrude the bending moment detection element 7, and a bending moment sensitive area of the bending moment detection element 7 is deformed.
The bending moment bearing joint 1 and the upper bending moment movable ball 5 can swing at 360 degrees, so that movement allowance is provided for the input bending moment; in summary, when a bending moment is input from the bending moment bearing joint 1, the bending moment detecting element 7 is pressed and deformed.
In this embodiment, the straight-tube T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor of this embodiment is micro-deformable, and the bending moment detecting element 7 and the first bending moment fixing element 3 are in clearance fit with each other, so that the bending moment detecting element 7 deforms under pressure.
The surface of the bending moment detection element 7 is covered with a magnetostrictive material, and the bending moment component force in the coupling force can generate stress strain on the magnetostrictive material.
When the straight-tube T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor is subjected to coupling force, an axial force component is input through the bending moment force bearing joint 1, and is finally acted on the axial force detection element 12 through two-stage conduction to deform the axial force detection element, the surface of the axial force detection element 12 is covered with a magnetostrictive material, and an axial component force in the coupling force can generate stress strain on the magnetostrictive material.
The straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor can simultaneously detect the bending force component and the pulling pressure component in the coupling force, namely, the coupling force is structurally decoupled; and does not need to be connected into a power supply line or collect data through a wired interface; the method is applied to the fields of machine tools, biology and medicine, can greatly reduce the problem that a plurality of wired transmissions are needed when the sensor outputs data, and greatly promotes the simplicity of information transmission.
The sequence of the above embodiments is only for convenience of description and does not represent the advantages and disadvantages of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a decoupling zero two-dimensional wireless passive sensor between straight section of thick bamboo T type dimension which characterized in that includes: the bending moment force-bearing joint comprises a bending moment force-bearing joint, an upper fixing plate, a first bending moment fixing element, an upper first ball element fixing body, an upper bending moment movable ball, an upper second ball element fixing body, a bending moment detection element, an upper supporting sleeve, a second bending moment fixing element, a middle bending moment fixing plate, a lower supporting sleeve, an axial force detection element, a lower force-bearing joint, a lower copper bead with holes and an upper copper bead with holes;
the bending moment bearing joint is slidably arranged in a central hole of the first bending moment fixing element, and the first bending moment fixing element limits the rotation of the bending moment bearing joint;
the upper first ball element fixing body is provided with a central through hole along an axis, the lower surface of the upper first ball element fixing body is provided with an upper ball socket, the upper ball socket is communicated with the central through hole, the upper second ball element fixing body is fixed on the upper first ball element fixing body, the upper surface of the upper second ball element fixing body is provided with a lower ball socket, the lower ball socket of the upper second ball element fixing body and the upper ball socket of the upper first ball element fixing body jointly form an accommodating space for accommodating the upper bending moment movable ball, the upper bending moment movable ball is arranged in the accommodating space, and the lower end of the bending moment bearing joint penetrates through the central through hole and is fixed on the upper bending moment movable ball;
the lower end of the upper second ball element fixing body is fixed with the upper end of an axial force detection element, and the lower end of the axial force detection element is fixed on the lower force bearing joint; the axial force detection element is adhered with a magnetostrictive material;
the lower end of the lower supporting sleeve is fixed on the lower force bearing joint, and the upper end of the lower supporting sleeve is fixed with a middle bending moment fixing plate;
the lower end of the upper supporting sleeve is fixed on the upper surface of the middle bending moment fixing plate, and the upper end of the upper supporting sleeve is fixed with an upper fixing plate;
the upper fixing plate is provided with a central hole along the axis of the upper fixing plate, and the axis of the central hole of the upper fixing plate is superposed with the axis of the bending moment bearing joint; the diameter of the central hole of the upper fixing plate is larger than that of the upper end of the bending moment bearing joint;
the bending moment detection elements are at least three and comprise an upper thread section, an upper fixing part, a detection part, a lower fixing part and a lower thread section which are sequentially connected, wherein the upper fixing part and the lower fixing part are cylindrical, and the detection part is flat; and a magnetostrictive material is adhered to the detection part;
the first bending moment fixing element is provided with a first through hole, the diameter of the first through hole is larger than the diameter of an upper threaded section of the bending moment detection element and smaller than the diameter of an upper fixing part, the upper threaded section is provided with a nut, and the first bending moment fixing element is arranged between the upper fixing part of the bending moment detection element and the nut;
the upper fixing plate is provided with a through hole, the through hole of the upper fixing plate is formed into a chamfer, an upper thread section of the bending moment detection element penetrates through the through hole of the upper fixing plate, an upper copper bead with holes is arranged on the part of the upper thread section above the upper fixing plate, and the upper copper bead with holes is arranged in the chamfer of the through hole of the upper fixing plate;
the center of the middle bending moment fixing plate is provided with a center hole, and the upper second ball element fixing body is slidably arranged in the center hole of the middle bending moment fixing plate;
the second bending moment fixing element is arranged on the middle bending moment fixing plate, a central hole is formed in the middle of the second bending moment fixing element, and the upper second ball element fixing body is slidably arranged in the central hole of the second bending moment fixing element;
the second bending moment fixing element is provided with a through hole, and the diameter of the through hole of the second bending moment fixing element is larger than that of the lower thread section of the bending moment detection element and smaller than that of the lower fixing part.
The bending moment detection device is characterized in that a through hole is formed in the middle bending moment fixing plate, the diameter of the through hole of the middle bending moment fixing plate is larger than that of a lower thread section of the bending moment detection element, the lower end of the through hole of the middle bending moment fixing plate is in a chamfer shape, the lower thread section of the bending moment detection element penetrates through the through hole of the second bending moment fixing element and the through hole of the middle bending moment fixing plate, and a lower copper bead with holes is arranged on the part, located at the lower part of the middle bending moment fixing plate, of the lower thread section of the bending moment detection element and is located in a chamfer of the through.
2. The straight-tube T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor as claimed in claim 1, wherein the bending moment force-bearing joint comprises a disk part, a first bump arranged on the lower surface of the disk part and a screw formed at the lower end of the first bump, and the central through hole of the first bending moment fixing element is matched with the first bump.
3. The straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor as claimed in claim 2, wherein the cross section of the first bump and the cross section of the central hole of the first bending moment fixing element are both rectangles with rounded corners.
4. The straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor as claimed in claim 2, wherein the axial lines of the disc part, the first bump and the screw are on the same straight line.
5. The straight-tube T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor as claimed in claim 1, wherein the middle part of the axial force detection element is thinner than the upper end and the lower end of the axial force detection element, and magnetostrictive materials are adhered on the middle part of the axial force detection element.
6. The straight-tube T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor as claimed in claim 1, wherein the diameter of the central through hole of the upper first ball element fixing body is larger than the diameter of the lower end of the bending moment force-bearing joint.
7. The straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor as claimed in claim 1, wherein the material of the lower supporting sleeve is acrylic.
8. The straight-cylinder T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor as claimed in claim 1, wherein the material of the upper supporting sleeve is acrylic.
9. The straight-tube T-shaped inter-dimensional decoupling two-dimensional wireless passive sensor as claimed in claim 1, wherein the number of bending moment detection elements is four.
10. The straight-barrel T-shaped sensor according to claim 1, wherein the upper bending moment movable ball is clearance-fitted with the upper first ball element fixture and the upper second ball element fixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011617493.5A CN112683439B (en) | 2020-12-30 | 2020-12-30 | Straight-tube T-shaped inter-dimension decoupling two-dimensional wireless passive sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011617493.5A CN112683439B (en) | 2020-12-30 | 2020-12-30 | Straight-tube T-shaped inter-dimension decoupling two-dimensional wireless passive sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112683439A true CN112683439A (en) | 2021-04-20 |
| CN112683439B CN112683439B (en) | 2021-11-16 |
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