CN113340509A - Straight-barrel module type inter-dimension decoupling two-dimensional wireless passive sensor - Google Patents
Straight-barrel module type inter-dimension decoupling two-dimensional wireless passive sensor Download PDFInfo
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- CN113340509A CN113340509A CN202110595199.7A CN202110595199A CN113340509A CN 113340509 A CN113340509 A CN 113340509A CN 202110595199 A CN202110595199 A CN 202110595199A CN 113340509 A CN113340509 A CN 113340509A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/16—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
- G01L5/169—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force using magnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/12—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress
- G01L1/125—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress by using magnetostrictive means
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Abstract
The invention discloses a straight cylinder module type inter-dimensional decoupling two-dimensional wireless passive sensor, which comprises: the device comprises an upper bending moment force bearing connector, a bending moment sensitive element, an upper first supporting sleeve, an upper first fixing element, an upper transition supporting plate, an upper swinging copper bead, an upper second fixing element, an upper second supporting sleeve, an upper cross fixing plate, an upper cross swinging element, a lower transition supporting plate, a lower first screw cap, a lower limiting element, a lower second screw cap, a first torque sensitive element, a second torque sensitive element, a lower supporting sleeve, a lower twisting screw rod, a lower fixing plate, a lower torque force bearing connector, a first fixing pin and a second fixing pin. The invention can simultaneously detect the bending force component and the torsion force component in the coupling force, namely, the structural decoupling is carried out on the coupling force; and does not need to be connected into a power supply line or collect data through a wired interface; the problem that a plurality of wired transmission is needed when the sensor outputs data can be greatly reduced.
Description
Technical Field
The invention relates to a straight cylinder module type 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 measuring sensor capable of simultaneously detecting force and moment information in two directions or more, and is widely applied to the fields of robots, industrial manufacturing, medical treatment and health, bioengineering 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 torsional stress and bending 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 torsional stress and the bending 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 object of the present invention is to provide a straight tube module type inter-dimensional decoupling two-dimensional wireless passive sensor that 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 barrel module type inter-dimensional decoupling two-dimensional wireless passive sensor comprises: the device comprises an upper bending moment force bearing connector, a bending moment sensitive element, an upper first supporting sleeve, an upper first fixing element, an upper transition supporting plate, an upper swinging copper bead, an upper second fixing element, an upper second supporting sleeve, an upper cross fixing plate, an upper cross swinging element, a lower transition supporting plate, a lower first screw cap, a lower limiting element, a lower second screw cap, a first torque sensitive element, a second torque sensitive element, a lower supporting sleeve, a lower twisting screw rod, a lower fixing plate, a lower torque force bearing connector, a first fixing pin and a second fixing pin;
a counter bore is formed in the center of the lower surface of the upper bending moment bearing joint, the upper end of the bending moment sensitive element is rotatably arranged in the counter bore of the upper bending moment bearing joint, and the upper bending moment bearing joint limits the movement of the bending moment sensitive element along the axial lead direction of the upper bending moment bearing joint;
the lower end of the bending moment sensitive element is fixed in a rectangular groove at the upper part of the upper cross-shaped swinging element, and magnetostrictive materials are adhered on the bending moment sensitive element;
the upper bending moment force-bearing joint is fixed at the upper end of the upper first support sleeve, and the lower end of the first support sleeve is fixed on the upper transition support plate;
the upper cross-shaped swinging element comprises a disc part, a cross-shaped boss part arranged on the disc part and a threaded rod part arranged on the cross-shaped boss part; the disk part of the upper cross-shaped swinging element is fixed on the lower transition support plate;
the cross-shaped boss part comprises a circular boss formed by upward protrusion from the upper surface of the circular disc part and four rectangular bosses formed by outward extension on the side wall of the circular boss, wherein the four rectangular bosses are uniformly arranged along the outer peripheral surface of the circular boss;
the lower end of the threaded rod part is fixed at the center of the cross boss part; a special-shaped hole corresponding to the shape of the cross-shaped boss part is formed in the middle of the upper cross-shaped fixing plate, the cross-shaped boss part is arranged in the special-shaped hole of the upper cross-shaped fixing plate, and a gap is formed between the cross-shaped boss part and the upper cross-shaped fixing plate;
the upper cross fixing plate is fixed at the lower end of the upper second supporting sleeve, and the upper end of the upper second supporting sleeve is fixed on the upper transition supporting plate;
an upper ball socket is formed on the lower surface of the upper first fixing element, a lower ball socket is formed on the upper surface of the upper second fixing element, an accommodating space is formed by the upper ball socket and the lower ball socket, and the upper swinging copper bead is movably arranged in the accommodating space;
the middle part of the upper swinging copper bead is formed into a threaded hole, and the threaded rod part of the upper cross-shaped swinging element is matched with the threaded hole of the upper swinging copper bead;
a through hole is formed in the middle of the upper first fixing element, the diameter of the through hole of the upper first fixing element is larger than that of the upper threaded rod of the upper cross-shaped swinging element, a central hole is formed in the middle of the upper transition supporting plate, and the diameter of the central hole of the upper transition supporting plate is larger than that of the threaded rod of the upper cross-shaped swinging element;
a through hole is formed in the middle of the upper second fixing element, and the diameter of the through hole of the upper second fixing element is larger than that of the threaded rod part of the upper cross-shaped swinging element; and, the upper first fixing element is fixed to the upper transition support plate and the upper second fixing element is fixed to the upper first fixing element;
the upper end of the lower supporting sleeve is fixed on the lower transition supporting plate, and the lower end of the lower supporting sleeve is fixed on the lower fixing plate; a central hole is formed in the middle of the lower transition support plate, and the upper end of a screw part of the lower torsion screw is rotatably arranged in the central hole of the lower transition support plate; the lower transition support plate is provided with a first annular groove at the outer side of the central hole, and the upper end of the first torque sensitive element is arranged in the first annular groove;
a rectangular hole with round corners is formed in the side wall of the lower supporting sleeve, the length direction of the rectangular hole with the round corners is parallel to the axial direction of the lower supporting sleeve, and one end of the lower limiting element is slidably arranged in the rectangular hole with the round corners of the lower supporting sleeve along the axial direction of the lower supporting sleeve;
the lower torsion screw comprises a circular table part and a screw part arranged on the circular table part, and the axial leads of the screw part and the circular table part are superposed;
a central hole is formed in the center of the lower fixing plate, the diameter of the central hole of the lower fixing plate is the same as that of the circular table part of the lower torsion screw rod, and the circular table part of the lower torsion screw rod is rotatably arranged in the central hole of the lower fixing plate;
an outer flange is formed at one end, connected with the screw part, of the circular table part of the lower torsion screw, and the lower fixing plate is arranged below the outer flange of the lower torsion screw and is in contact with the outer flange of the lower torsion screw;
a second annular groove is formed in an outer flange of the lower torsion screw rod, and the lower end of the second torque sensitive element is arranged in the second annular groove;
the lower half part of the screw part of the lower torsion screw is a rectangular screw thread, and the upper half part of the screw part of the lower torsion screw is a cylinder, so that the upper end of the screw part of the lower torsion screw is rotatably arranged in the central hole of the lower transition support plate;
the middle part of the lower first nut is formed into a rectangular screw threaded hole, and the lower first nut is matched with the screw part of the lower torsion screw so as to enable the lower first nut to move up and down when the lower torsion screw rotates; the outer surface of the lower first nut is formed with a tapered surface with which the lower end of the first torque sensitive element is in contact; the middle part of the lower second nut is formed into a rectangular lead screw threaded hole, and the lower second nut is matched with the lead screw part of the lower torsion lead screw so as to enable the lower second nut to move up and down when the lower torsion lead screw rotates; an inverted conical surface is formed on the outer surface of the lower second nut, and the upper end of the second torque sensitive element is in contact with the inverted conical surface;
the lower surface of the lower first nut is in contact with the lower surface of the lower second nut, and the other end of the lower limiting element is fixed to the lower first nut and the lower second nut through screws;
magnetostrictive materials are adhered to the first torque sensitive element and the second torque sensitive element;
the lower end of the lower torsion lead screw is fixed on the lower torque force bearing joint.
Optionally, a rectangular through hole with a round corner is formed in the side wall of the counter bore of the upper bending moment bearing connector, the upper portion of the bending moment sensitive element is disc-shaped and is provided with a through hole in the radial direction, the middle of the first fixing pin is arranged in the through hole in the upper portion of the bending moment sensitive element, and two ends of the first fixing pin are slidably arranged in the rectangular through hole with a round corner of the upper bending moment bearing connector.
Optionally, the diameter of the circular through hole of the special-shaped hole of the upper cross fixing plate is larger than that of the circular boss of the upper cross swinging element; the length and the width of a rectangular hole with a round angle of the special-shaped hole of the upper cross-shaped fixing plate are both larger than those of the rectangular lug of the upper cross-shaped swinging element.
Optionally, a nut portion of a screw existing on the lower side of the lower fixing plate is in contact with the upper surface of the lower torque bearing joint.
The invention has the following beneficial effects: the straight-cylinder module type inter-dimensional decoupling two-dimensional wireless passive sensor can simultaneously detect the bending force component and the torsion force component in the coupling force, namely, the structural decoupling is carried out on the coupling force; 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 perspective view of a straight-barrel module type inter-dimensional decoupling two-dimensional wireless passive sensor according to the present invention.
Fig. 2 is a cross-sectional view of a three-dimensional structure of a straight-barrel module type inter-dimensional decoupling two-dimensional wireless passive sensor.
Fig. 3 is a quarter sectional view of a three-dimensional structure of the straight-barrel module type inter-dimension decoupling two-dimensional wireless passive sensor.
Fig. 4 is an exploded view of the three-dimensional structure parts of the straight-cylinder module type inter-dimension decoupling two-dimensional wireless passive sensor.
Fig. 5 is a disassembled quarter sectional view of the three-dimensional structure of the straight-barrel module type inter-dimension decoupling two-dimensional wireless passive sensor.
FIG. 6 is an exploded view of the three-dimensional structural components of the bending moment force-sensitive area of the straight-barrel module type inter-dimension decoupling two-dimensional wireless passive sensor.
FIG. 7 is a three-dimensional structural sectional view of a bending moment force-sensitive area of the straight-barrel module type inter-dimensional decoupling two-dimensional wireless passive sensor.
Fig. 8 is an exploded view of the three-dimensional structure of the torque force sensitive area of the straight-barrel module type inter-dimension decoupling two-dimensional wireless passive sensor of the present invention.
Fig. 9 is a perspective structural sectional view of a torque force sensitive area of the straight-barrel module type inter-dimension decoupling two-dimensional wireless passive sensor of the present invention.
The notation in the figures means: 1-upper bending moment bearing joint; 2-bending moment sensitive element; 3-an upper first support sleeve; 4-an upper first fixing element; 5-an upper transition support plate; 6-swinging copper beads at the upper part; 7-an upper second fixation element; 8-an upper second support sleeve; 9-upper cross fixing plate; 10-upper cross-shaped swinging element; 11-lower transition support plate; 12-a lower first nut; 13-a lower stop element; 14-a lower second nut; 15-a second torque sensitive element; 16-a lower support sleeve; 17-lower torsion screw; 18-lower fixed plate; 19-lower torque force bearing joint; 20-a first fixing pin; 21-second fixed pin.
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 two-dimensional wireless passive sensor between straight section of thick bamboo module type dimension, especially a decoupling two-dimensional wireless passive force/moment sensor between straight section of thick bamboo module type dimension, and it includes: the device comprises an upper bending moment force bearing connector 1, a bending moment sensitive element 2, an upper first supporting sleeve 3, an upper first fixing element 4, an upper transition supporting plate 5, an upper swing copper bead 6, an upper second fixing element 7, an upper second supporting sleeve 8, an upper cross fixing plate 9, an upper cross swing element 10, a lower transition supporting plate 11, a lower first nut 12, a lower limiting element 13, a lower second nut 14, a first torque sensitive element, a second torque sensitive element 15, a lower supporting sleeve 16, a lower torsion screw 17, a lower fixing plate 18, a lower torque force bearing connector 19, a first fixing pin 20 and a second fixing pin 21.
The upper bending moment bearing joint 1 is integrally disc-shaped, a bump is arranged at the lower part of the upper bending moment bearing joint, a counter bore is arranged at the center of the bump, the upper end of the bending moment sensitive element 2 is rotatably arranged in the counter bore of the upper bending moment bearing joint 1, and the upper bending moment bearing joint 1 limits the movement of the bending moment sensitive element 2 along the axial lead direction of the upper bending moment bearing joint 1.
For example, a rectangular through hole with a rounded corner is formed in the side wall of the counter bore of the bump, so as to be matched with the bending moment sensitive element 2 through the first fixing pin 20, the bending moment sensitive element 2 is integrally i-shaped, the upper part of the bending moment sensitive element 2 is disc-shaped, and a through hole is formed in the radial direction, the middle part of the first fixing pin 20 is arranged in the through hole in the upper part of the bending moment sensitive element 2, and two ends of the first fixing pin 20 are slidably arranged in the rectangular through hole with a rounded corner of the upper bending moment bearing joint 1; the axial lead of the upper bending moment bearing joint 1 is vertically arranged, and the rectangular through hole with the round angle is horizontally arranged, so that the interference of partial torsional allowance on the bending moment sensitive element 2 is prevented.
The lower part of the bending moment sensitive element 2 is rectangular, and a through hole is formed in the radial direction; the lower part of the bending moment sensitive element 2 is fixed in a rectangular groove at the upper part of the upper cross-shaped swinging element 10 through the second fixing pin 21; and a magnetostrictive material is adhered to the bending moment sensitive element 2.
The upper bending moment force-bearing joint 1 is fixed at the upper end of the upper first support sleeve 3, and the lower end of the first support sleeve 3 is fixed on the upper transition support plate 5.
Preferably, the material of the upper first support sleeve 3 is acrylic in order to reduce electromagnetic shielding.
The upper cross-shaped swinging member 10 includes a disk portion, a cross boss portion provided on the disk portion, and a threaded rod portion provided on the cross boss portion.
In this embodiment, four through holes are formed in the disk portion of the upper cross-shaped swinging member 10 for fixing the upper cross-shaped swinging member 10 to the lower transition support plate 11 by screws.
The cross boss part comprises a circular boss formed by upward protrusion of the upper surface of the circular disc part and four rectangular bosses formed by outward extension of the side wall of the circular boss, wherein the four rectangular bosses are uniformly arranged along the peripheral surface of the circular boss, namely, the included angle between two adjacent rectangular bosses is 90 degrees.
The lower end of the threaded rod part is fixed at the center of the cross boss part; a special-shaped hole corresponding to the shape of the cross-shaped boss part is formed in the middle of the upper cross fixing plate 9, wherein the cross-shaped boss part is arranged in the special-shaped hole of the upper cross fixing plate 9, and a gap is formed between the cross-shaped boss part and the upper cross fixing plate 9.
In this embodiment, the upper cross fixing plate 9 is fixed to the lower end of the upper second supporting sleeve 8, and the upper end of the upper second supporting sleeve 8 is fixed to the upper transition supporting plate 5.
An upper ball socket is formed on the lower surface of the upper first fixing element 4, a lower ball socket is formed on the upper surface of the upper second fixing element 7, an accommodating space (complete ball socket) is formed by the upper ball socket and the lower ball socket, and the upper swing copper bead 6 is movably arranged in the accommodating space.
In this embodiment, the middle of the upper swinging copper bead 6 is formed as a threaded hole, and the threaded rod part of the upper cross-shaped swinging element 10 is matched with the threaded hole of the upper swinging copper bead 6; the upper end of the threaded rod portion of the upper cross swing member 10 forms a rectangular groove, and the sidewall of the rectangular groove forms a through hole, so that the bending moment sensitive member 2 is fixed to the upper end of the threaded rod portion of the upper cross swing member 10 by the first fixing pin 20.
The upper first fixing element 4 has a through hole in the middle, the diameter of which is larger than the diameter of the upper threaded rod of the upper cross-shaped swinging element 10, and four threaded holes in the outside, which are connected with the upper second fixing element 7 and the upper transition support plate 5 by screws, so that the upper second fixing element and the upper transition support plate 5 are fixed below the upper transition support plate 5.
There are six screw holes in the 5 outsides of upper portion transition backup pad for through the screw with the first support sleeve 3 in upper portion and upper portion second support sleeve 8 are connected, simultaneously there are four screw holes in 5 inboard of upper portion transition backup pad, for through the screw with the first fixed component 4 in upper portion is connected, there is the centre bore in the middle of 5 in the transition backup pad in upper portion, the centre bore diameter of 5 in the transition backup pad in upper portion is greater than the diameter in the screw pole portion of the cross swing component 10 in upper portion, and the upper end in the screw pole portion of the cross swing component 10 in upper portion passes the centre bore of 5 in the transition backup pad in upper portion is located the top of upper portion transition backup pad.
Preferably, the thickness of the upper transition support plate 5 is slightly thicker than that of the other support plates, the upper cross fixing plate 9 and the upper second support sleeve 8 are both fixed on the upper transition support plate 5 by screws, and the upper first support sleeve is also fixed on the upper transition support plate 5 by screws, and the screws respectively occupy half of the threaded holes of the upper transition support plate 5, so that the upper transition support plate 5 is slightly thicker.
The upper oscillating bronze bead 6 has a central threaded hole, is in threaded fit with the threaded rod part of the upper cross-shaped oscillating element 10, and has a spherical surface in contact fit with a ball socket formed by the upper first fixing element 4 and the upper second fixing element 7.
A through hole is formed in the middle of the upper second fixing element 7, the diameter of the through hole of the upper second fixing element 7 is larger than that of the threaded rod part of the upper cross-shaped swinging element 10, four threaded holes are formed in the outer side of the through hole and connected with the upper first fixing element 4 through screws, a half ball socket is formed in the middle of the upper second fixing element 7, a complete ball socket is formed between the half ball socket and the upper first fixing element 4, and the half ball socket is matched with the upper swinging copper bead 6. Preferably, the contact surface between the upper oscillating bronze bead 6 and the upper first and second fixing elements 4, 7 may be slightly smeared with a lubricant.
Preferably, the upper second support sleeve 8 material is acrylic.
There are six through-holes in the upper portion cross fixed plate 9 outside for through the screw with the cooperation of upper portion second support sleeve 8, simultaneously there is special-shaped hole in upper portion cross fixed plate 9 inboard, be circular through-hole in the middle of the special-shaped hole, outwards extend a rectangular hole with fillet respectively in four azimuths of circular through-hole simultaneously, with the cross boss portion formation clearance fit of upper portion cross swing element 10.
In this embodiment, it is preferable that the size of the special-shaped hole in the middle of the upper cross fixing plate 9 is slightly larger than the size of the cross boss portion of the upper cross swinging member 10, that is, the diameter of the circular through hole of the special-shaped hole of the upper cross fixing plate 9 is larger than the diameter of the circular boss of the upper cross swinging member 10; meanwhile, the length and width of the corresponding rectangular hole with the round corners are slightly larger than those of the rectangular bump of the upper cross-shaped swinging component 10, that is, the upper cross-shaped swinging component 10 has a certain swinging allowance in an angle of 360 degrees.
Four through holes are formed in the outer side of the lower transition support plate 11 and are used for being matched with the upper cross-shaped swinging element 10 and the lower support sleeve 16 through screws, namely, the upper end of the lower support sleeve 16 is fixed on the lower transition support plate 11, so that the lower transition support plate 11 and the upper cross-shaped swinging element 10 jointly form a connection point between a bending moment module and a torque module.
The middle part of the lower transition support plate 11 is formed with a central hole for matching with the screw part of the lower torsion screw 17, that is, the upper end of the screw part of the lower torsion screw 17 is rotatably arranged in the central hole of the lower transition support plate 11.
And the lower transition support plate 11 is formed with a first annular groove outside the central hole, and the upper end of the first torque sensing element is disposed in the first annular groove.
Four through holes are formed outside the lower support sleeve 16 to be engaged with the lower transition support plate 11 and the lower fixing plate 18 by screws, that is, the lower end of the lower support sleeve 16 is fixed to the lower fixing plate 18.
A rectangular hole with rounded corners is formed on the side wall of the lower support sleeve 16, and the length direction of the rectangular hole with rounded corners is parallel to the axial direction of the lower support sleeve 16, and the projection of the lower limiting element 13 is slidably arranged in the rectangular hole with rounded corners of the lower support sleeve 16 along the axial direction of the lower support sleeve 16, that is, one end of the lower limiting element 13 can move along the axial direction of the lower support sleeve 16.
Preferably, the lower support sleeve 16 is made of 304 stainless steel to reduce electromagnetic shielding and increase the overall rigidity of the sensor, and since the projection of the lower limiting element 13 is in contact fit with the lower support sleeve 16 while the lower support sleeve 16 limits the torsional movement of the lower limiting element 13, the corresponding material is finally selected to be 304 stainless steel, which is slightly rigid on one hand and not easily magnetized on the other hand.
The lower torsion screw 17 includes a circular table portion and a screw portion provided on the circular table portion, wherein axial lines of the screw portion and the circular table portion coincide with each other.
A center hole is formed in the center of the lower fixing plate 18, and the center hole of the lower fixing plate 18 has the same diameter as the circular truncated cone of the lower torsion screw 17, so that the circular truncated cone of the lower torsion screw is rotatably disposed in the center hole of the lower fixing plate 18.
An outer flange is formed at one end of the circular table portion of the lower torsion screw 17 connected to the screw portion, and the lower fixing plate 18 is disposed below the outer flange of the lower torsion screw 17 and is in contact with the outer flange of the lower torsion screw 17.
In this embodiment, a second annular groove is formed on the outer flange of the lower torsion screw 17, and the lower end of the second torque sensing element 15 is disposed in the second annular groove.
The lower half part of the screw part of the lower torsion screw 17 is a rectangular screw thread, and the upper half part of the screw part of the lower torsion screw 17 is a cylinder, so that the upper end of the screw part of the lower torsion screw 17 is rotatably arranged in the central hole of the lower transition support plate 11.
The lower part first nut 12 and the lower part second nut 14 cooperate the part to have the lead screw part corresponding to it, with the lower part first nut 12 and the lower part second nut 14 have formed screw mechanism jointly, simultaneously the upside that the lower part was turned round lead screw 17 is the cylinder, through the centre bore of lower part transition backup pad 11 is located its cooperation.
Four screw holes are formed at the outer side of the lower fixing plate 18 to be connected to the lower support sleeve 16 by screws, and a through hole having the same diameter as that of the lower side projection of the lower torsion screw 17 is formed at the inner side of the lower fixing plate 18.
The lower first nut 12 is formed at a central portion thereof with a rectangular screw threaded hole, and the lower first nut 12 is engaged with a screw portion of the lower torsion screw 17 to enable the lower first nut 12 to be moved up and down when the lower torsion screw 17 is rotated.
The outer surface of the lower first nut 12 is formed with a tapered surface with which the lower end of the first torque sensitive element is in contact, i.e., the tapered surface of the lower first nut 12 gradually increases in diameter from top to bottom.
The lower second nut 14 is formed at a central portion thereof with a rectangular screw threaded hole, and the lower second nut 14 is engaged with a screw portion of the lower torsion screw 17 to enable the lower second nut 14 to be moved up and down when the lower torsion screw 17 is rotated.
The surface of lower part second nut 14 is formed with the back taper surface, the upper end of second torque sensing element 15 with the back taper surface contact, promptly, the back taper surface of lower part second nut 14 reduces from last diameter to down gradually.
The lower surface of the lower first nut 12 is in contact with the lower surface of the lower second nut 14, and the other end of the lower stopper element 13 is fixed to the lower first nut 12 and the lower second nut 14 by screws.
For example, the lower first nut 12 has a recessed platform on each side, and the recessed platforms have a threaded hole for engaging with the other end of the lower limiting element 13 by screws, and the central threaded hole of the lower first nut 12 and the central threaded hole of the lower second nut 14 can be seamlessly engaged.
The lower second nut 14 has a recess on each side, which has a threaded hole for the screw engagement with the lower stop element 13.
Preferably, the lower first nut 12 and the lower second nut 14 are screwed together with the lower limiting element 13, so that the lower first nut 12, the lower limiting element 13 and the lower second nut 14 can also be regarded as one piece.
More preferably, the lower limiting element 13 can be added together to be regarded as a complete screw structure, since the lower first nut 12, the lower second nut 14 and the lower torsion screw 17 together form a screw structure.
In this embodiment, the first torque sensitive element and the second torque sensitive element 15 are integrally ring-shaped, and a magnetostrictive material is adhered to the first torque sensitive element and the second torque sensitive element 15.
Preferably, the contact portions between the first torque sensing element and the lower transition support plate 11, and between the second torque sensing element and the lower torsion screw may be coated with grease.
In this embodiment, the lower end of the lower torsion lead screw 17 is fixed to the lower torque force-bearing joint 19 by a screw.
Preferably, the nut portion of the screw present on the underside of the lower mounting plate 18 contacts the upper surface of the lower torque bearing sub 19 to reduce the effect of axial forces on the first and second torque sensitive elements 15.
Four through holes are formed in the outer side of the lower torque bearing joint 19 and used for being penetrated through by screws, and four through holes and four corresponding counter bores are formed in the inner side of the lower torque bearing joint and used for being matched with the lower torsion screw 17 through screws.
When the straight-barrel module type inter-dimension decoupling two-dimensional wireless passive sensor works, the force applied to the bending moment sensitive element 2 is only tensile stress, and the force applied to the first torque sensitive element and the second torque sensitive element 15 is expansion force.
When the straight cylinder module type inter-dimensional decoupling two-dimensional wireless passive sensor is used, the upper bending moment bearing connector 1 at the upper end of the straight cylinder module type inter-dimensional decoupling two-dimensional wireless passive sensor can be fixed to a piece to be detected, and the lower torque bearing connector 19 is fixed to the piece to be detected, so that deformation can be generated on the bending moment sensitive element 2 under the action of external bending moment, and meanwhile, magnetostrictive materials are pasted on the bending moment sensitive element 2, and the detection of the bending moment can be realized.
When under the action of external torque, the first torque sensitive element and the second torque sensitive element 15 can be deformed, and meanwhile, magnetostrictive materials are adhered on the first torque sensitive element and the second torque sensitive element 15, so that the torque detection can be realized.
In this embodiment, the upper bending moment force-bearing joint 1 is a bending moment stress input end of the straight-barrel module type inter-dimensional decoupling two-dimensional wireless passive sensor; the lower torque force-bearing joint 19 is a torque stress input end of the straight cylinder module type inter-dimension decoupling two-dimensional wireless passive sensor.
When the straight tube module type two-dimensional wireless decoupling two-dimensional passive two-dimensional sensor is subjected to coupling force, a bending moment component is input through the upper bending moment bearing joint 1, because the upper bending moment bearing joint 1 is directly connected with the bending moment sensitive element 2 through the first fixing pin 20, the bending moment sensitive element 2 is fixed on the upper side of the upper cross-shaped swinging element 10 through the second fixing pin 21, the upper cross-shaped swinging element 10 is connected with the upper swinging copper bead 6 through threads, the spherical surface of the upper swinging copper bead 6 is fixed in a ball socket between the upper first fixing element 4 and the upper second fixing element 7, and the diameter of the upper side rod of the upper cross-shaped swinging element 10 is smaller than the diameters of the upper first fixing element 4, the upper second fixing element 7 and the center hole of the upper transition support plate 5, the overall size of the upper cross boss portion of the upper cross-shaped swinging component 10 is smaller than the middle special-shaped hole of the upper cross-shaped fixing plate 9, and a certain margin exists between the disc portion of the upper cross-shaped swinging component 10 and the upper cross-shaped fixing plate 9, so that the upper cross-shaped swinging component 10 has a certain swinging margin of 360 degrees, and when a bending moment component is input from the upper bending moment bearing joint 1, the upper part of the sensor swings except for the upper cross-shaped swinging component 10 which is kept still; at this time, the upper cross-shaped swinging member 10 pulls the bending moment sensitive member 2 to be radially stretched, thereby being deformed. The surface of the bending moment sensitive element 2 is covered with a magnetostrictive material, and the bending moment component force in the coupling force can generate stress strain on the magnetostrictive material. The magnetic field change is detected by the detection coil, which generates the inverse magnetostrictive effect (vilari effect) under the action of the applied excitation magnetic field.
The transmission route of the bending moment is that the upper bending moment bearing joint 1, the upper first supporting sleeve 3, the upper transition supporting plate 5, the screw, the upper first fixing element 4, the upper swinging copper bead 6, the upper second fixing element 7, the bending moment sensitive element 2, the upper cross swinging element 10, the lower transition supporting plate 11, the lower supporting sleeve 16, the lower fixing plate 18, the screw and the bending moment reach the torque bearing joint 19 for output, when the bending moment is transmitted to the lower fixing plate 18, since the distance between the lower fixing plate 18 and the lower torque-bearing joint 19 is equal to the height of the nut of the screw thereon, when the bending moment is transmitted to the lower fixing plate 18, the bending moment is directly transmitted downwards to the lower torque bearing joint 19, so that the first torque sensitive element and the second torque sensitive element 15 are not affected when the sensor is subjected to the bending moment.
The force sensitive area according to this embodiment can be combined with fig. 2, fig. 3, fig. 6 and fig. 7, and it can be seen that the bending moment applied to the force sensitive area does not produce stress change to the torsion force, that is, the first torque sensitive element and the second torque sensitive element 15 do not deform themselves.
When the straight-barrel module type inter-dimensional decoupling two-dimensional wireless passive two-dimensional sensor is subjected to coupling force, a torque component is input through the lower torque force-bearing connector 19, because the lower torque force-bearing connector 19 is fixed on the lower surface of the lower torsion lead screw 17 through a screw, and the lower torsion lead screw 17, the lower first nut 12, the lower second nut 14 and the lower limiting element 13 jointly form a lead screw structure, when the torque component reaches the lower torsion lead screw 17, the lower torsion lead screw 17 rotates, and simultaneously, because one end of the lower limiting element 13 is positioned in special-shaped hole positions on two sides of the lower supporting sleeve 16, the hole positions limit the circular motion of the lower limiting element 13, the lower torsion lead screw 17 rotates at the same time, and the lower first nut 12, the lower second nut 14 and the lower limiting element 13 move downwards or upwards, the first and second torque sensitive elements 15 are in turn deformed on the slopes of the lower first nut 12 and the lower second nut 14. When the surfaces of the first torque sensitive element and the second torque sensitive element 15 are covered with magnetostrictive materials, the torque component of the coupling force generates stress strain on the magnetostrictive materials. The magnetic field change is detected by the detection coil, which generates the inverse magnetostrictive effect (vilari effect) under the action of the applied excitation magnetic field.
The transmission route of the torque is the lower torque bearing joint 19, the lower torsion screw 17, the lower second nut 14, the lower first nut 12, the lower limiting element 13, the first torque sensitive element and the second torque sensitive element 15, the lower support sleeve 16, the lower transition support plate 11, the upper cross-shaped swinging element 10, the upper cross-shaped fixing plate 9, the upper second support sleeve 8, the upper transition support plate 5 and the upper first support sleeve 3, and the torque component reaches the upper bending moment bearing joint 1 and is output. When the torque component reaches the upper cross-shaped swinging element 10, a small rotation in the twisting direction is generated due to the small clearance fit of the special-shaped hole position between the upper cross-shaped swinging element 10 and the upper cross-shaped fixing plate, meanwhile, a bump is arranged at the lower side of the upper bending moment bearing joint 1 and is provided with a central hole, a special-shaped hole position is arranged at the side surface of the bump and is in a rectangular hole with a round angle, the bending moment sensitive element 2 is fixed in the inner hole of the lower bump of the upper bending moment bearing joint 1 through the hole by the first fixing pin 20, and due to the existence of the special-shaped hole position, the bending moment sensitive element 2 cannot deform when receiving a small twisting action, so that the bending moment sensitive element 2 cannot be influenced when the sensor receives the torque.
The force sensitive area according to this embodiment can be combined with fig. 2, fig. 3, fig. 8 and fig. 9, and it can be seen that the torque applied to the force sensitive area does not produce stress change to the bending moment, that is, the bending moment sensitive element 2 itself does not deform.
The straight-cylinder module type inter-dimensional decoupling two-dimensional wireless passive sensor can simultaneously detect the bending force component and the torsion force component in the coupling force, namely, the structural decoupling is carried out on the coupling force; and does not need to be connected into a power supply line or collect data through a wired interface; meanwhile, the sensor adopts a modular design, and the sensor is formed by assembling two modules which respectively detect the bending component and the torsion component, so that the modules can be freely disassembled and assembled; 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 (4)
1. The utility model provides a decoupling zero two-dimensional wireless passive sensor between straight section of thick bamboo module type dimension which characterized in that includes: the device comprises an upper bending moment force bearing connector, a bending moment sensitive element, an upper first supporting sleeve, an upper first fixing element, an upper transition supporting plate, an upper swinging copper bead, an upper second fixing element, an upper second supporting sleeve, an upper cross fixing plate, an upper cross swinging element, a lower transition supporting plate, a lower first screw cap, a lower limiting element, a lower second screw cap, a first torque sensitive element, a second torque sensitive element, a lower supporting sleeve, a lower twisting screw rod, a lower fixing plate, a lower torque force bearing connector, a first fixing pin and a second fixing pin;
a counter bore is formed in the center of the lower surface of the upper bending moment bearing joint, the upper end of the bending moment sensitive element is rotatably arranged in the counter bore of the upper bending moment bearing joint, and the upper bending moment bearing joint limits the movement of the bending moment sensitive element along the axial lead direction of the upper bending moment bearing joint;
the lower end of the bending moment sensitive element is fixed in a rectangular groove at the upper part of the upper cross-shaped swinging element, and magnetostrictive materials are adhered on the bending moment sensitive element;
the upper bending moment force-bearing joint is fixed at the upper end of the upper first support sleeve, and the lower end of the first support sleeve is fixed on the upper transition support plate;
the upper cross-shaped swinging element comprises a disc part, a cross-shaped boss part arranged on the disc part and a threaded rod part arranged on the cross-shaped boss part; the disk part of the upper cross-shaped swinging element is fixed on the lower transition support plate;
the cross-shaped boss part comprises a circular boss formed by upward protrusion from the upper surface of the circular disc part and four rectangular bosses formed by outward extension on the side wall of the circular boss, wherein the four rectangular bosses are uniformly arranged along the outer peripheral surface of the circular boss;
the lower end of the threaded rod part is fixed at the center of the cross boss part; a special-shaped hole corresponding to the shape of the cross-shaped boss part is formed in the middle of the upper cross-shaped fixing plate, the cross-shaped boss part is arranged in the special-shaped hole of the upper cross-shaped fixing plate, and a gap is formed between the cross-shaped boss part and the upper cross-shaped fixing plate;
the upper cross fixing plate is fixed at the lower end of the upper second supporting sleeve, and the upper end of the upper second supporting sleeve is fixed on the upper transition supporting plate;
an upper ball socket is formed on the lower surface of the upper first fixing element, a lower ball socket is formed on the upper surface of the upper second fixing element, an accommodating space is formed by the upper ball socket and the lower ball socket, and the upper swinging copper bead is movably arranged in the accommodating space;
the middle part of the upper swinging copper bead is formed into a threaded hole, and the threaded rod part of the upper cross-shaped swinging element is matched with the threaded hole of the upper swinging copper bead;
a through hole is formed in the middle of the upper first fixing element, the diameter of the through hole of the upper first fixing element is larger than that of the upper threaded rod of the upper cross-shaped swinging element, a central hole is formed in the middle of the upper transition supporting plate, and the diameter of the central hole of the upper transition supporting plate is larger than that of the threaded rod of the upper cross-shaped swinging element;
a through hole is formed in the middle of the upper second fixing element, and the diameter of the through hole of the upper second fixing element is larger than that of the threaded rod part of the upper cross-shaped swinging element; and, the upper first fixing element is fixed to the upper transition support plate and the upper second fixing element is fixed to the upper first fixing element;
the upper end of the lower supporting sleeve is fixed on the lower transition supporting plate, and the lower end of the lower supporting sleeve is fixed on the lower fixing plate; a central hole is formed in the middle of the lower transition support plate, and the upper end of a screw part of the lower torsion screw is rotatably arranged in the central hole of the lower transition support plate; the lower transition support plate is provided with a first annular groove at the outer side of the central hole, and the upper end of the first torque sensitive element is arranged in the first annular groove;
a rectangular hole with round corners is formed in the side wall of the lower supporting sleeve, the length direction of the rectangular hole with the round corners is parallel to the axial direction of the lower supporting sleeve, and one end of the lower limiting element is slidably arranged in the rectangular hole with the round corners of the lower supporting sleeve along the axial direction of the lower supporting sleeve;
the lower torsion screw comprises a circular table part and a screw part arranged on the circular table part, and the axial leads of the screw part and the circular table part are superposed;
a central hole is formed in the center of the lower fixing plate, the diameter of the central hole of the lower fixing plate is the same as that of the circular table part of the lower torsion screw rod, and the circular table part of the lower torsion screw rod is rotatably arranged in the central hole of the lower fixing plate;
an outer flange is formed at one end, connected with the screw part, of the circular table part of the lower torsion screw, and the lower fixing plate is arranged below the outer flange of the lower torsion screw and is in contact with the outer flange of the lower torsion screw;
a second annular groove is formed in an outer flange of the lower torsion screw rod, and the lower end of the second torque sensitive element is arranged in the second annular groove;
the lower half part of the screw part of the lower torsion screw is a rectangular screw thread, and the upper half part of the screw part of the lower torsion screw is a cylinder, so that the upper end of the screw part of the lower torsion screw is rotatably arranged in the central hole of the lower transition support plate;
the middle part of the lower first nut is formed into a rectangular screw threaded hole, and the lower first nut is matched with the screw part of the lower torsion screw so as to enable the lower first nut to move up and down when the lower torsion screw rotates; the outer surface of the lower first nut is formed with a tapered surface with which the lower end of the first torque sensitive element is in contact; the middle part of the lower second nut is formed into a rectangular lead screw threaded hole, and the lower second nut is matched with the lead screw part of the lower torsion lead screw so as to enable the lower second nut to move up and down when the lower torsion lead screw rotates; an inverted conical surface is formed on the outer surface of the lower second nut, and the upper end of the second torque sensitive element is in contact with the inverted conical surface;
the lower surface of the lower first nut is in contact with the lower surface of the lower second nut, and the other end of the lower limiting element is fixed to the lower first nut and the lower second nut through screws;
magnetostrictive materials are adhered to the first torque sensitive element and the second torque sensitive element;
the lower end of the lower torsion lead screw is fixed on the lower torque force bearing joint.
2. The straight-barrel module type inter-dimensional decoupling two-dimensional wireless passive sensor as claimed in claim 1, wherein a rectangular through hole with a round corner is formed in a side wall of a counter bore of the upper bending moment bearing joint, the upper bending moment sensitive element is disc-shaped and has a through hole in a radial direction, a middle portion of the first fixing pin is arranged in the through hole of the upper bending moment sensitive element, and two ends of the first fixing pin are slidably arranged in the rectangular through hole with a round corner of the upper bending moment bearing joint.
3. The straight-barrel module type inter-dimensional decoupling two-dimensional wireless passive sensor as claimed in claim 1, wherein the diameter of the circular through hole of the special-shaped hole of the upper cross fixing plate is larger than the diameter of the circular boss of the upper cross swinging element; the length and the width of a rectangular hole with a round angle of the special-shaped hole of the upper cross-shaped fixing plate are both larger than those of the rectangular lug of the upper cross-shaped swinging element.
4. The straight barrel module type wireless passive sensor as claimed in claim 1, wherein a nut portion of a screw existing on an underside of the lower fixing plate is in contact with an upper surface of the lower torque-bearing joint.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110595199.7A CN113340509A (en) | 2021-05-28 | 2021-05-28 | Straight-barrel module type inter-dimension decoupling two-dimensional wireless passive sensor |
| CN202111276793.6A CN113959623A (en) | 2021-05-24 | 2021-10-29 | Straight-barrel module type inter-dimension decoupling three-dimensional wireless passive sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110595199.7A CN113340509A (en) | 2021-05-28 | 2021-05-28 | Straight-barrel module type inter-dimension decoupling two-dimensional wireless passive sensor |
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| CN113340509A true CN113340509A (en) | 2021-09-03 |
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| CN202110595199.7A Withdrawn CN113340509A (en) | 2021-05-24 | 2021-05-28 | Straight-barrel module type inter-dimension decoupling two-dimensional wireless passive sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115326268A (en) * | 2022-08-31 | 2022-11-11 | 东北电力大学 | Coaxial series three-dimensional mechanical self-decoupling force sensor |
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- 2021-05-28 CN CN202110595199.7A patent/CN113340509A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115326268A (en) * | 2022-08-31 | 2022-11-11 | 东北电力大学 | Coaxial series three-dimensional mechanical self-decoupling force sensor |
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Application publication date: 20210903 |