CN114412907B - Speed measuring nut structure of shielding motor - Google Patents
Speed measuring nut structure of shielding motor Download PDFInfo
- Publication number
- CN114412907B CN114412907B CN202210023980.1A CN202210023980A CN114412907B CN 114412907 B CN114412907 B CN 114412907B CN 202210023980 A CN202210023980 A CN 202210023980A CN 114412907 B CN114412907 B CN 114412907B
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- loosening
- magnetic steel
- speed measuring
- pin
- radius
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 87
- 239000010959 steel Substances 0.000 claims abstract description 87
- 230000006698 induction Effects 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 claims description 15
- 210000003781 tooth socket Anatomy 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000000696 magnetic material Substances 0.000 claims description 2
- 230000000737 periodic effect Effects 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 abstract description 6
- 239000004020 conductor Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000003889 chemical engineering Methods 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000000827 velocimetry Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000001513 hot isostatic pressing Methods 0.000 description 1
- 238000000462 isostatic pressing Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/282—Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention relates to a speed measuring nut structure of a shielding motor, wherein magnetic steel (2) is arranged in a magnetic steel mounting hole (17) of a speed measuring nut base body (1) made of non-magnetic conductive materials, the magnetic steel (2) is in interference fit with the magnetic steel mounting hole (17), the outer surfaces of the speed measuring nut base body (1) and the magnetic steel (2) are induction cylindrical surfaces (6), the upper end surfaces of the speed measuring nut base body (1) and the magnetic steel (2) are baffle mounting surfaces (12), and a magnetic steel baffle (3) is arranged on the baffle mounting surfaces (12) through countersunk screws (4) to compress the magnetic steel (2). The invention not only has a periodic magnetoelectric signal generating function structure, can meet the requirements of stability and reliability under the condition of high-speed rotation, but also has simple and convenient manufacturing process, no special equipment and lower manufacturing cost. The shielding motor has wide application value in the fields of speed measurement and anti-loosening in the speed measurement nut structure, and can be widely applied to the industries of ships, energy sources, chemical engineering, medical treatment and the like.
Description
Technical Field
The invention relates to a speed measuring nut structure of a shielding motor.
Background
Because of the nature of the fluid medium to be conveyed and the limitation of application, the shielding motor mostly adopts a pressure boundary closed structure, and in order to adapt to the testing requirement of the shielding motor and identify faults in time, the rotating speed of the rotating shaft of the shielding motor needs to be monitored in a non-contact manner, and the shielding motor generally adopts a magneto-electric rotating speed measuring method. From the aspects of magnetoelectric speed measurement principle, rotating part safety, economy, manufacturability and the like, the speed measurement nut not only needs to meet the structural reliability requirements except for periodic magnetoelectric signal generation conditions, including the stability of a speed measurement structure and the reliability of a locking structure, but also needs to realize better manufacturability and economy.
At present, the motor speed measuring mode in engineering also adopts an eddy current principle, and the speed measuring structure of the magnetoelectric speed measuring nut adopts a hot isostatic pressing structure, and although the speed measuring nut structure for generating periodic magnetoelectric signals can also be realized, special isostatic pressing equipment is needed, the process is complex, and the economic cost is high; the prior anti-loosening mode of the rotating part on the engineering is mainly a gasket or locking plate type anti-loosening structure, and has the defects of low anti-loosening torque, easy replacement, poor operability, easy damage to the surface of the part, sensitivity to temperature and the like. Therefore, a shielding motor speed measuring nut structure capable of meeting the characteristic requirements in various aspects is required in engineering so as to meet the product requirements of high quality and high comprehensive performance.
Disclosure of Invention
The invention aims to provide a speed measuring nut structure of a shielding motor, which has a stable and reliable periodic magnetoelectric signal generating function, a safe and reliable anti-loosening function and better manufacturability and economy. The technical scheme of the invention aims to: the utility model provides a shielding motor speed measuring nut structure, by speed measuring structure, locking structure two structures are constituteed, speed measuring structure comprises speed measuring nut base member (1) and magnet steel mounting hole (17), magnet steel (2), magnet steel baffle (3), countersunk head screw (4) and response cylinder (6), magnet steel (2) are installed in magnet steel mounting hole (17) of speed measuring nut base member (1) that non-magnetic conduction material was made, magnet steel (2) are interference fit with magnet steel mounting hole (17), the surface of speed measuring nut base member (1) and magnet steel (2) is response cylinder (6), the up end of speed measuring nut base member (1) and magnet steel (2) is baffle installation face (12), the magnetic steel baffle (3) is arranged on the baffle installation surface (12) through a countersunk head screw (4) and compresses the magnetic steel (2), the countersunk head screw (4) is packaged on the magnetic steel baffle (3) in a welding mode, the anti-loosening structure comprises a speed measuring nut matrix (1), anti-loosening gear teeth (7), anti-loosening gear tooth sockets (8), a stepped pin (9), an anti-loosening disc end plate (10) and an end plate pin hole (14), an anti-loosening disc cavity (11) and a pin cavity (15) and a return spring (16), a plurality of anti-loosening gear teeth (7) and anti-loosening gear tooth sockets (8) which are mutually spaced are distributed at the lower part of the speed measuring nut matrix (1) along the circumference, the anti-loosening disc cavity (11) and the anti-loosening disc end plate (10) are packaged into a plurality of pin chambers (15), the stepped pins (9) and the reset springs (16) are installed in the pin chambers (15) in series, end plate pin holes (14) are formed in positions, corresponding to the pin chambers (15), on the anti-loosening disc end plate (10), the large ends of the stepped pins (9) are located in the anti-loosening disc end plate (10), the small ends of the stepped pins (9) penetrate through the end plate pin holes (14) and are higher than the upper plane of the anti-loosening disc end plate (10), and the small ends of the stepped pins (9) higher than the upper plane of the anti-loosening disc end plate (10) are located in anti-loosening wheel tooth grooves (8).
The radius of the induction cylindrical surface (6) is smaller than the sum of the pitch circle radius of the magnetic steel mounting hole (17) and the radius of the magnetic steel (2) which is 2/3 times, and the radius of the induction cylindrical surface (6) is larger than the sum of the pitch circle radius of the magnetic steel mounting hole (17) and the radius of the magnetic steel (2) which is 1/3 times.
24 anti-loosening gear teeth which are mutually spaced are uniformly distributed on the speed measuring nut base body (1) along the circumference
(7) And the anti-loosening wheel tooth grooves (8), wherein each anti-loosening disc cavity (11) is internally provided with 12 pairs of stepped pins (9), and the stepped pins (9) are uniformly distributed at intervals of 31.25 degrees along the circumference except the head and tail positions.
The radius of the anti-loosening wheel tooth groove (8) is larger than the small end radius of the stepped pin (9), the pitch circle radius of the anti-loosening wheel tooth groove (8) is larger than the installation pitch circle radius of the stepped pin (9), and the difference between the radius of the anti-loosening wheel tooth groove (8) and the small end radius of the stepped pin (9) is larger than the difference between the pitch circle radius of the anti-loosening wheel tooth groove (8) and the installation pitch circle radius of the stepped pin (9).
The working principle of the invention is as follows:
the magnetic steel (2) is arranged in a magnetic steel mounting hole (17) of a speed measuring nut base body (1) made of non-magnetic conductive materials, the magnetic steel (2) is in interference fit with the magnetic steel mounting hole (17), the outer surfaces of the speed measuring nut base body (1) and the magnetic steel (2) are induction cylindrical surfaces (6), the radius of the induction cylindrical surfaces (6) is smaller than the sum of the pitch circle radius of the magnetic steel mounting hole (17) and the radius of the magnetic steel (2) which is 2/3 times, and the radius of the induction cylindrical surfaces (6) is larger than the sum of the pitch circle radius of the magnetic steel mounting hole (17) and the radius of the magnetic steel (2) which is 1/3 times. Under the high-speed rotation working condition, the magnetic steel (2) is stable in position in the hole due to interference fit, the outer diameter position is directly restrained by the material of the speed measuring nut matrix (1) and cannot deviate radially, a magnetic steel (2) and non-magnetic conductive material interval structure is formed on the induction cylindrical surface (6), and generation of periodic magneto-electric signals can be realized. The upper end surfaces of the speed measuring nut base body (1) and the magnetic steel (2) are baffle installation surfaces (12), the magnetic steel baffle (3) is installed on the baffle installation surfaces (12) through countersunk screws (4) to compress the magnetic steel (2), and the countersunk screws (4) are packaged on the magnetic steel baffle (3) in a welding mode, so that axial limiting reliability and safety of the magnetic steel (2) under any condition can be ensured.
The speed measuring nut structure adopts a tooth-pin type principle to carry out anti-loosening design, the lower part of a speed measuring nut base body (1) is provided with a plurality of anti-loosening gear teeth (7) and anti-loosening gear tooth grooves (8) which are mutually spaced along the circumference, an anti-loosening disc cavity (11) and an anti-loosening disc end plate (10) are packaged into a plurality of pin chambers (15), a stepped pin (9) and a reset spring (16) are installed in the pin chambers (15) in series, an end plate pin hole (14) is formed in the anti-loosening disc end plate (10) corresponding to the position of the pin chambers (15), and the large end of the stepped pin (9) is positioned in the anti-loosening disc end plate (10). The reset spring (16) is further compressed when the axial compression is carried out, and the stepped pin (9) is kept in a state of not being higher than the anti-loose disc end plate (10); when the stepped pin (9) is opposite to the anti-loosening wheel tooth groove (8), axial pressure is eliminated, under the action of a return spring (16), the stepped pin (9) can penetrate through an end plate pin hole (14) and is higher than the upper plane of an anti-loosening disc end plate (10), and the speed measuring nut base body (1) is limited by the stepped pin (9) and cannot rotate around the axis, so that an anti-loosening function is realized. The anti-loose disc cavity (11) structure can be integrated on the connected piece or can be independently used as a part to be connected with the connected piece through a pin, a key or the like.
The speed measuring nut structure adopts special design to ensure that the speed measuring nut structure can have anti-loosening function at any circumferential installation angle position, 24 anti-loosening gear teeth (7) and anti-loosening gear tooth grooves (8) which are mutually spaced are uniformly distributed on the speed measuring nut substrate (1) along the circumference, and the circumferential spacing angle of the adjacent anti-loosening gear tooth grooves (8) is as follows
15 degrees, namely 15 degrees is a rotation period angle, and the projection shape of the anti-loose wheel tooth groove (8) coincides with the projection shape before rotation when the speed measuring nut base body (1) rotates around the axis by 15 degrees. A total of 12 pairs of stepped pins (9) are arranged in each anti-loosening disc cavity (11), the stepped pins (9) are uniformly distributed at intervals of 31.25 degrees along the circumference except the head and tail positions, the 15-degree rotation cycle angle of the corresponding speed measuring nut matrix (1) is uniformly divided into 12 positions at intervals of 1.25 degrees, and the stepped pins (9) can be aligned with anti-loosening wheel tooth grooves (8) at the 12 positions at intervals of 1.25 degrees; the radius of the anti-loosening wheel tooth groove (8) is larger than the small end radius of the stepped pin (9), the pitch radius of the anti-loosening wheel tooth groove (8) is larger than the installation pitch radius of the stepped pin (9), the difference between the radius of the anti-loosening wheel tooth groove (8) and the small end radius of the stepped pin (9) is larger than the difference between the pitch radius of the anti-loosening wheel tooth groove (8) and the installation pitch radius of the stepped pin (9), a small-angle floating space is reserved between the small end of the stepped pin (9) and the anti-loosening wheel tooth groove (8), the distribution interval of 1.25 DEG can be compensated, and finally 1-2 stepped pins (9) can be positioned in the anti-loosening wheel tooth groove (8) at any circumferential installation angle position, so that the anti-loosening effect at any angle position can be achieved.
The invention has the beneficial effects that:
the speed measuring nut structure of the shielding motor provided by the invention not only has a periodic magnetoelectric signal generating functional structure, can meet the requirements on stability and reliability under the condition of high-speed rotation, has a simple and convenient manufacturing process, does not need special equipment, has lower manufacturing cost, but also has a specially designed anti-loosening structure with high reliability, and has the advantages that after the speed measuring nut is pre-tightened according to a designed pre-tightening moment, the nut can be loosened at any circumferential angle position, the anti-loosening moment is higher, the stability under the working condition of high-speed rotation is strong, the speed measuring nut is insensitive to temperature change, can be repeatedly utilized under the normal use condition, does not need replacement, is particularly suitable for occasions of frequent disassembly, and overcomes the defects of unstable anti-loosening moment, component replacement, poor operability, surface damage to parts, poor temperature tolerance and the like of the conventional anti-loosening structure. Therefore, the speed measuring nut structure of the shielding motor has wide application value in the fields of speed measurement and anti-loosening.
Drawings
FIG. 1 is a three-dimensional view of the speed nut structure of the present invention;
FIG. 2 is a two-dimensional cross-sectional view of a velocimetry nut structure;
FIG. 3 is a two-dimensional cross-sectional view of a U-U section of the speed nut structure;
FIG. 4 is a three-dimensional cross-sectional view of a velocimetry nut base blank;
FIG. 5 is a three-dimensional view of the anti-loose disc assembly;
FIG. 6 is a two-dimensional top view of the anti-loose disc assembly;
fig. 7 is a three-dimensional schematic view of a tooth type tool for assembling and disassembling a speed nut.
Detailed Description
As shown in fig. 1, a speed measuring nut structure of a shielding motor is composed of a speed measuring structure and a locking structure, the speed measuring structure is composed of a speed measuring nut base body 1, a magnetic steel mounting hole 17, magnetic steel 2, a magnetic steel baffle plate 3, a countersunk head screw 4 and an induction cylindrical surface 6, the magnetic steel 2 is mounted in the magnetic steel mounting hole 17 of the speed measuring nut base body 1 made of non-magnetic materials, the magnetic steel 2 and the magnetic steel mounting hole 17 are in interference fit, the outer surfaces of the speed measuring nut base body 1 and the magnetic steel 2 are the induction cylindrical surface 6, the upper end surfaces of the speed measuring nut base body 1 and the magnetic steel 2 are baffle mounting surfaces 12, the magnetic steel baffle plate 3 is mounted on the baffle mounting surfaces 12 through the countersunk head screw 4 and compresses the magnetic steel 2, and the countersunk head screw 4 is packaged on the magnetic steel baffle plate 3 in a welding mode. The anti-loosening structure comprises a speed measuring nut base body 1, anti-loosening gear teeth 7, an anti-loosening gear tooth socket 8, a stepped pin 9, an anti-loosening disc end plate 10, an end plate pin hole 14, an anti-loosening disc cavity 11, a pin chamber 15 and a reset spring 16, wherein the lower part of the speed measuring nut base body 1 is provided with a plurality of mutually-spaced anti-loosening gear teeth 7 and anti-loosening gear tooth sockets 8, the anti-loosening disc cavity 11 and the anti-loosening disc end plate 10 are packaged into a plurality of pin chambers 15, the stepped pin 9 and the reset spring 16 are installed in the pin chambers 15 in series, an end plate pin hole 14 is formed in the position, corresponding to the pin chamber 15, of the anti-loosening disc end plate 10, the large end of the stepped pin 9 is positioned in the anti-loosening disc end plate 10, the stepped pin 9 axially pressed by the anti-loosening gear teeth 7 is kept not positioned in the anti-loosening disc end plate 10, the small end of the stepped pin 9 aligned with the anti-loosening gear tooth sockets 8 penetrates through the end plate pin hole 14 and is higher than the upper plane of the anti-loosening disc end plate 10, the small end of the stepped pin 9 higher than the upper plane of the anti-loosening disc 10 is positioned in the anti-loosening disc tooth socket 8, and the speed measuring nut base body 1 is limited by the stepped pin 9 and cannot rotate.
As shown in fig. 4, an exhaust hole 18 is formed in the bottom of the magnetic steel mounting hole 17 along the radial direction on the speed measuring nut base body blank 19, as shown in fig. 3, the magnetic steel 2 is mounted in the magnetic steel mounting hole 17 of the speed measuring nut base body 1 made of non-magnetic conductive materials, the magnetic steel 2 and the magnetic steel mounting hole 17 are in interference fit, the speed measuring nut base body 1 is formed by assembling the speed measuring nut base body blank 19 and the magnetic steel 2 and then processing, the outer surfaces of the speed measuring nut base body 1 and the magnetic steel 2 are induction cylindrical surfaces 6, the radius of the induction cylindrical surfaces 6 is smaller than the sum of the pitch radius of the magnetic steel mounting hole 17 and the radius of the magnetic steel 2 which is 2/3 times, and the radius of the induction cylindrical surfaces 6 is larger than the sum of the pitch radius of the magnetic steel mounting hole 17 and the radius of the magnetic steel 2 which is 1/3 times. The vent hole 18 is removed during processing of the sensing cylinder 6 and does not remain on the tachometer nut base body 1.
As shown in fig. 2, the upper end surfaces of the speed measuring nut base body 1 and the magnetic steel 2 are baffle mounting surfaces 12, as shown in fig. 1, the outer diameter of the magnetic steel baffle 3 is equal to the diameter of the induction cylindrical surface 6, the magnetic steel baffle 3 is mounted on the baffle mounting surfaces 12 through countersunk screws 4 to compress the magnetic steel 2, and the countersunk screws 4 are packaged on the magnetic steel baffle 3 in a welding mode.
As shown in fig. 1, the lower part of the tachometer nut base body 1 is provided with 24 anti-loosening gear teeth 7 and anti-loosening gear tooth grooves 8 which are spaced from each other evenly along the circumference, as shown in fig. 2, the anti-loosening disc cavity 11 can be integrated on a connected piece or separately used as a component to be connected with the connected piece through pins or keys, the anti-loosening disc cavity 11 is provided with a plurality of pin chambers 15, clearance fit is formed between the stepped pin 9 and the anti-loosening disc cavity 11, the stepped pin 9 and the return spring 16 are installed in the pin chambers 15 in series, an end plate pin hole 14 is formed in the position, corresponding to the pin chambers 15, of the anti-loosening disc end plate 10, the large end of the stepped pin 9 is located in the anti-loosening disc end plate 10, the anti-loosening disc end plate 10 is pressed on the stepped end face of the stepped pin 9, the small end of the stepped pin 9 is higher than the anti-loosening disc end plate 10 through the pin hole 14, the return spring 16 is pressed to form a certain preload until the anti-loosening disc end plate 10 is contacted with the upper end face of the anti-loosening disc cavity 11, the anti-loosening disc cavity 11 and the anti-loosening disc end plate 10 are welded and packaged to form a plurality of pin chambers 15, and the stepped pin 9 and the return spring 16 are installed in the pin chambers 15 in series.
As shown in fig. 5, stepped pins 9 are installed in each anti-loosening disc cavity 11, and 12 pairs in total, the number of the anti-loosening disc cavities 11 is consistent with that of the stepped pins 9, and as shown in fig. 6, the stepped pins 9 are uniformly distributed at intervals of 31.25 degrees along the circumference except the head and tail positions. As shown in fig. 1, the radius of the locking wheel tooth groove 8 is larger than the small end radius of the stepped pin 9, as shown in fig. 2, the pitch circle radius of the locking wheel tooth groove 8 is larger than the installation pitch circle radius of the stepped pin 9, and the difference between the radius of the locking wheel tooth groove 8 and the small end radius of the stepped pin 9 is larger than the difference between the pitch circle radius of the locking wheel tooth groove 8 and the installation pitch circle radius of the stepped pin 9.
As shown in fig. 1, the speed measuring nut base body 1 is provided with an inner hexagonal hole 5 for installing a spanner to rotate the speed measuring nut base body 1, as shown in fig. 7, a split type assembling and disassembling toothed tool 20 is installed and fixed at the position corresponding to the anti-loosening gear teeth 7 and the anti-loosening gear tooth grooves 8 in the assembling and disassembling process, the speed measuring structure is installed on the rotating shaft 13 through threads of the speed measuring nut base body 1, in the disassembling process, the stepped pin 9 is kept in a state of not being located on the anti-loosening plate end plate 10 under the action of axial pressure, the speed measuring structure can freely rotate, after the speed measuring nut is installed and screwed according to a designed pretightening moment, the assembling and disassembling toothed tool 20 is opened and disassembled, as shown in fig. 1, the stepped pin 9 axially pressed by the anti-loosening gear teeth 7 is kept in a state of not being located on the anti-loosening plate end plate 10, and the stepped pin 9 opposite to the anti-loosening gear tooth grooves 8 can penetrate through the end plate pin hole 14 to be located on the upper plane of the anti-loosening plate end plate 10, and the stepped pin 9 located on the anti-loosening plate end plate 10 limits the rotation of the anti-loosening gear teeth 7. As shown in fig. 1, the speed measuring structure can have 1-2 stepped pins 9 in the anti-loosening wheel tooth grooves 8 at any circumferential installation angle position to keep an anti-loosening state.
As shown in FIG. 1, the speed measuring nut base body 1, the magnetic steel mounting hole 17, the magnetic steel 2, the magnetic steel baffle plate 3, the countersunk head screw 4 and the induction cylindrical surface 6 form a speed measuring structure, and the speed measuring nut has the characteristics of periodic magneto-electric signal generation, manufacturability and excellent economical efficiency, and the speed measuring nut base body 1, the anti-loosening gear teeth 7, the anti-loosening gear tooth sockets 8, the stepped pin 9, the anti-loosening disc end plate 10, the end plate pin hole 14, the anti-loosening disc cavity 11, the pin cavity 15 and the reset spring 16 form an anti-loosening structure, so that the function of anti-loosening at any angle position can be realized, and the speed measuring nut has the technical characteristics of higher anti-loosening torque, more reliable anti-loosening, insensitivity to temperature change, no need of replacement in disassembly and the like.
Claims (3)
1. A speed measuring nut structure of a shielding motor is characterized in that: the anti-loosening device consists of a speed measuring structure and an anti-loosening structure, the speed measuring structure consists of a speed measuring nut base body (1) and a magnetic steel mounting hole (17), magnetic steel (2), a magnetic steel baffle plate (3), a countersunk screw (4) and an induction cylindrical surface (6), the magnetic steel (2) is mounted in the magnetic steel mounting hole (17) of the speed measuring nut base body (1) made of non-magnetic materials, the magnetic steel (2) and the magnetic steel mounting hole (17) are in interference fit, the outer surfaces of the speed measuring nut base body (1) and the magnetic steel (2) are the induction cylindrical surface (6), the upper end surfaces of the speed measuring nut base body (1) and the magnetic steel (2) are baffle mounting surfaces (12), the magnetic steel baffle plate (3) is mounted on the baffle mounting surfaces (12) through the countersunk screw (4), the compression screw (2) and the countersunk screw (4) are packaged on the magnetic steel baffle plate (3) in a welding mode, the anti-loosening structure consists of the speed measuring nut base body (1), a gear tooth socket (7), an anti-loosening wheel (8), a stepped pin (9), an anti-loosening disc end plate (10) and an end plate pin hole (14), an anti-loosening disc cavity (11) and a pin cavity (15), a reset spring (16) are arranged on the outer surface of the magnetic steel base body, and a plurality of the anti-loosening screw (8) are distributed along the circumference of the base body (8), the anti-loosening disc cavity (11) and the anti-loosening disc end plate (10) are packaged into a plurality of pin chambers (15), the stepped pins (9) and the reset springs (16) are installed in the pin chambers (15) in series, end plate pin holes (14) are formed in positions, corresponding to the pin chambers (15), on the anti-loosening disc end plate (10), the large ends of the stepped pins (9) are located in the anti-loosening disc end plate (10), the small ends of the stepped pins (9) penetrate through the end plate pin holes (14) and are higher than the upper plane of the anti-loosening disc end plate (10), the small ends of the stepped pins (9) higher than the upper plane of the anti-loosening disc end plate (10) are located in anti-loosening wheel tooth grooves (8), and the radius of the sensing cylinder (6) is smaller than the sum of the pitch circle radius of the magnetic steel mounting holes (17) and the radius of the magnetic steel (2) which is 2/3 times, and the radius of the sensing cylinder (6) is larger than the sum of the pitch circle radius of the magnetic steel mounting holes (17) and the radius of the magnetic steel (2) which is 1/3 times.
2. The shielded motor speed nut structure of claim 1, wherein: 24 anti-loosening gear teeth (7) and anti-loosening gear tooth grooves (8) which are spaced mutually are uniformly distributed on the speed measuring nut base body (1) along the circumference, a stepped pin (9) is installed in each anti-loosening disc cavity (11), 12 pairs are added, and the stepped pins (9) are uniformly distributed along the circumference except the head and tail positions at intervals of 31.25 degrees.
3. The shielded motor speed nut structure of claim 1, wherein: the radius of the anti-loosening wheel tooth groove (8) is larger than the small end radius of the stepped pin (9), the pitch circle radius of the anti-loosening wheel tooth groove (8) is larger than the installation pitch circle radius of the stepped pin (9), and the difference between the radius of the anti-loosening wheel tooth groove (8) and the small end radius of the stepped pin (9) is larger than the difference between the pitch circle radius of the anti-loosening wheel tooth groove (8) and the installation pitch circle radius of the stepped pin (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210023980.1A CN114412907B (en) | 2022-01-11 | 2022-01-11 | Speed measuring nut structure of shielding motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210023980.1A CN114412907B (en) | 2022-01-11 | 2022-01-11 | Speed measuring nut structure of shielding motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114412907A CN114412907A (en) | 2022-04-29 |
| CN114412907B true CN114412907B (en) | 2023-12-05 |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3740061A1 (en) * | 1987-11-26 | 1989-06-08 | T & R Electronic Gmbh | Coupling for transmitting rotary movements |
| EP0617206A2 (en) * | 1993-03-26 | 1994-09-28 | AlliedSignal Inc. | Self positioning nut |
| CN104500536A (en) * | 2014-12-01 | 2015-04-08 | 南京工程学院 | Anti-loosening thread device |
| CN204358004U (en) * | 2014-11-25 | 2015-05-27 | 南京钢铁股份有限公司 | A kind of special carrier that can improve detecting element on-line checkingi precision |
| CN204387064U (en) * | 2014-12-01 | 2015-06-10 | 南京工程学院 | A kind of checknut device |
| CN204828229U (en) * | 2015-07-20 | 2015-12-02 | 南京中人能源科技有限公司 | Can be mechanically locking nut that tests speed |
| CN107524685A (en) * | 2017-09-29 | 2017-12-29 | 贵州新安航空机械有限责任公司 | A kind of stop nut |
| CN209458262U (en) * | 2018-11-16 | 2019-10-01 | 合肥新航工业模具制造有限公司 | A kind of range-adjustable limit locking device |
| CN210136244U (en) * | 2018-08-16 | 2020-03-10 | 现代摩比斯株式会社 | Device for measuring the speed of a vehicle having an in-wheel motor |
| CN210509898U (en) * | 2019-08-05 | 2020-05-12 | 上海金科机械制造有限公司 | Anti-loose nut |
| CN113294423A (en) * | 2021-06-17 | 2021-08-24 | 蒋建伟 | Combined anti-loose fastener |
-
2022
- 2022-01-11 CN CN202210023980.1A patent/CN114412907B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3740061A1 (en) * | 1987-11-26 | 1989-06-08 | T & R Electronic Gmbh | Coupling for transmitting rotary movements |
| EP0617206A2 (en) * | 1993-03-26 | 1994-09-28 | AlliedSignal Inc. | Self positioning nut |
| CN204358004U (en) * | 2014-11-25 | 2015-05-27 | 南京钢铁股份有限公司 | A kind of special carrier that can improve detecting element on-line checkingi precision |
| CN104500536A (en) * | 2014-12-01 | 2015-04-08 | 南京工程学院 | Anti-loosening thread device |
| CN204387064U (en) * | 2014-12-01 | 2015-06-10 | 南京工程学院 | A kind of checknut device |
| CN204828229U (en) * | 2015-07-20 | 2015-12-02 | 南京中人能源科技有限公司 | Can be mechanically locking nut that tests speed |
| CN107524685A (en) * | 2017-09-29 | 2017-12-29 | 贵州新安航空机械有限责任公司 | A kind of stop nut |
| CN210136244U (en) * | 2018-08-16 | 2020-03-10 | 现代摩比斯株式会社 | Device for measuring the speed of a vehicle having an in-wheel motor |
| CN209458262U (en) * | 2018-11-16 | 2019-10-01 | 合肥新航工业模具制造有限公司 | A kind of range-adjustable limit locking device |
| CN210509898U (en) * | 2019-08-05 | 2020-05-12 | 上海金科机械制造有限公司 | Anti-loose nut |
| CN113294423A (en) * | 2021-06-17 | 2021-08-24 | 蒋建伟 | Combined anti-loose fastener |
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| Publication number | Publication date |
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| CN114412907A (en) | 2022-04-29 |
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