CN114412907A - Speed measuring nut structure of shielding motor - Google Patents
Speed measuring nut structure of shielding motor Download PDFInfo
- Publication number
- CN114412907A CN114412907A CN202210023980.1A CN202210023980A CN114412907A CN 114412907 A CN114412907 A CN 114412907A CN 202210023980 A CN202210023980 A CN 202210023980A CN 114412907 A CN114412907 A CN 114412907A
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- magnetic steel
- speed measuring
- pin
- radius
- loosening
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 88
- 239000010959 steel Substances 0.000 claims abstract description 88
- 230000006698 induction Effects 0.000 claims abstract description 20
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 210000003781 tooth socket Anatomy 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 230000000737 periodic effect Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000696 magnetic material Substances 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract description 2
- 238000003889 chemical engineering Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 238000001513 hot isostatic pressing Methods 0.000 description 1
- 238000000462 isostatic pressing Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
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
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- 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 shielded motor, wherein a magnetic steel (2) is arranged in a magnetic steel mounting hole (17) of a speed measuring nut base body (1) made of a non-magnetic material, 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 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 mounted on the baffle mounting surfaces (12) through countersunk head screws (4) and tightly presses the magnetic steel (2). The invention not only has a periodic magnetoelectric signal generating functional structure, can meet the requirements of stability and reliability under the condition of high-speed rotation, but also has simple and convenient manufacturing process, does not need special equipment and has lower manufacturing cost. The shielding motor has wide application value in the field of speed measurement and looseness prevention of the speed measurement nut structure, and can be widely applied to the industries of ships, energy, chemical engineering, medical treatment and the like.
Description
Technical Field
The invention relates to a speed measuring nut structure of a shielding motor.
Background
Due to the limitations of the nature and application of the medium for conveying the fluid, the canned motor is mostly of a pressure boundary closed structure, so that the rotating speed of the rotating shaft of the canned motor needs to be monitored in real time in a non-contact manner in order to meet the testability requirement of the canned motor and identify faults in time, and the canned motor generally adopts a magnetoelectric rotating speed measuring method. Considering from aspects such as magnetoelectric formula speed measurement principle, rotary part security, economic nature, manufacturability, the nut that tests the speed not only needs to satisfy the structural reliability requirement except that should possess periodic magnetoelectric signal generating condition, including the stability of the structure of testing the speed and the reliability of anti loosening structure, needs to realize more excellent manufacturability and economic nature moreover.
In the prior art, the speed measuring mode of the motor adopts an eddy current type principle, the speed measuring structure of the magnetoelectric speed measuring nut mostly adopts a hot isostatic pressing structure, and although the speed measuring nut structure capable of generating periodic magnetoelectric signals can be realized, special isostatic pressing equipment is required, the process is complex, and the economic cost is high; the anti-loosening mode of the rotating part in the prior engineering is mainly a gasket or locking plate type anti-loosening structure, and has the defects of lower anti-loosening torque, replacement required during disassembly, poor operability, easy damage to the surface of a part, sensitivity to temperature and the like. Therefore, a shielding motor speed measuring nut structure capable of meeting requirements of various characteristics is needed in engineering so as to meet the requirements of products with high quality and high comprehensive performance.
Disclosure of Invention
The invention aims to provide a speed measuring nut structure of a shielded motor, which has a stable and reliable periodic magnetoelectric signal generation function, a safe and reliable anti-loosening function and better manufacturability and economy. The technical scheme of the invention comprises the following steps: a speed measuring nut structure of a shielding motor comprises a speed measuring structure and an anti-loosening structure, wherein the speed measuring structure comprises a speed measuring nut base body (1), 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 arranged in the magnetic steel mounting hole (17) of the speed measuring nut base body (1) made of non-magnetic-conducting 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 plate mounting surfaces (12), the magnetic steel baffle plate (3) is mounted on the baffle plate mounting surfaces (12) through the countersunk screw (4) to compress the magnetic steel (2), and the countersunk 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), anti-loosening wheel tooth grooves (8), a stepped pin (9), an anti-loosening disc end plate (10), end plate pin holes (14), an anti-loosening disc cavity body (11), pin chambers (15) and a reset spring (16), wherein a plurality of mutually spaced anti-loosening gear teeth (7) and anti-loosening wheel tooth grooves (8) are distributed on the lower portion of the speed measuring nut base body (1) along the circumference, the anti-loosening disc cavity body (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, the end plate pin holes (14) are formed in the positions, corresponding to the pin chambers (15), on 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), and the small end of the stepped pin (9) penetrates through the end plate pin holes (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 end plate (10) of the anti-loosening disc is positioned in the tooth groove (8) of the anti-loosening wheel.
The radius of the induction cylindrical surface (6) is smaller than the sum of the radius of a pitch circle of the magnetic steel mounting hole (17) and 2/3 times of the radius of the magnetic steel (2), and the radius of the induction cylindrical surface (6) is larger than the sum of the radius of the pitch circle of the magnetic steel mounting hole (17) and 1/3 times of the radius of the magnetic steel (2).
24 mutually-spaced anti-loosening gear teeth are uniformly distributed on the speed-measuring nut base body (1) along the circumference
(7) And locking wheel tooth's socket (8), install ladder pin (9) in every locking dish cavity (11), 12 pairs in total, ladder pin (9) are except that head and the tail position along the circumference according to interval 31.25 evenly distributed.
The radius of the tooth socket (8) of the anti-loosening wheel is larger than the radius of the small end of the stepped pin (9), the pitch circle radius of the tooth socket (8) of the anti-loosening wheel is larger than the radius of the installation pitch circle of the stepped pin (9), and the difference between the radius of the tooth socket (8) of the anti-loosening wheel and the radius of the small end of the stepped pin (9) is larger than the difference between the radius of the pitch circle of the tooth socket (8) of the anti-loosening wheel and the radius of the installation pitch circle 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 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 induction cylindrical surfaces (6), the radius of each 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 each 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. Under the condition of high-speed rotation, the magnetic steel (2) is stable in position in the hole due to interference fit, the outer diameter position cannot be radially separated under the direct constraint action of the material of the nut base body (1) to be tested, and the magnetic steel (2) and a non-magnetic conductive material spacing structure is formed on the induction cylindrical surface (6), so that the generation of periodic magnetic electric signals can be realized. The upper end faces of the speed measuring nut base body (1) and the magnetic steel (2) are baffle mounting faces (12), the magnetic steel baffle (3) is mounted on the baffle mounting faces (12) through the countersunk head screws (4) and compresses the magnetic steel (2), the countersunk head screws (4) are packaged on the magnetic steel baffle (3) in a welding mode, and axial limiting reliability and safety under any condition of the magnetic steel (2) can be guaranteed.
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 distributed at intervals along the circumference, an anti-loosening disc cavity (11) and an anti-loosening disc end plate (10) are packaged into a plurality of pin cavities (15), a stepped pin (9) and a reset spring (16) are installed in the pin cavities (15) in series, an end plate pin hole (14) is formed in the position, corresponding to the pin cavities (15), on the anti-loosening disc end plate (10), and the large end of the stepped pin (9) is positioned in the anti-loosening disc end plate (10). When the axial direction is pressed, the reset spring (16) is further compressed, and the stepped pin (9) keeps a state of not higher than the end plate (10) of the anti-loosening disc; when the stepped pin (9) is opposite to the tooth groove (8) of the anti-loosening wheel, the axial pressure is eliminated, the stepped pin (9) can penetrate through the end plate pin hole (14) and be higher than the upper plane of the end plate (10) of the anti-loosening disc under the action of the return spring (16), and the speed measuring nut base body (1) is limited by the stepped pin (9) and cannot rotate around the axis, so that the anti-loosening function is realized. The anti-loosening disc cavity (11) structure can be integrated on the connected piece or independently used as a component to be connected with the connected piece through a pin or a key and 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 base body (1) along the circumference, and the circumferential spacing angle of the adjacent anti-loosening gear tooth grooves (8) is
15 degrees, namely 15 degrees are a rotation period angle, every time the speed measuring nut base body (1) rotates 15 degrees around the axis, the projection shape of the tooth groove (8) of the anti-loosening wheel is coincided with that before rotation. Step pins (9) are installed in each anti-loosening disc cavity (11), 12 pairs in total are installed, the step pins (9) are evenly distributed at intervals of 31.25 degrees along the circumference except the head and the tail, the positions correspond to 15-degree rotation period angles of the speed measuring nut base body (1), the positions are evenly divided into 12 positions at intervals of 1.25 degrees, and the step pins (9) are arranged at the 12 positions at intervals of 1.25 degrees and can be aligned with the tooth grooves (8) of the anti-loosening wheel; locking wheel tooth's socket (8) radius is greater than ladder pin (9) tip radius, the pitch radius of locking wheel tooth's socket (8) is greater than the installation pitch radius of ladder pin (9), and the difference of locking wheel tooth's socket (8) radius and ladder pin (9) tip radius is greater than the difference of the pitch radius of locking wheel tooth's socket (8) and the installation pitch radius of ladder pin (9), there is the small-angle space of floating between the tip of ladder pin (9) and locking wheel tooth's socket (8), can compensate 1.25 distribution interval, finally realize that all can have 1 ~ 2 ladder pin (9) in locking wheel tooth's socket (8) in arbitrary circumference installation angular position, thereby reach the equal effect in arbitrary angular position.
The invention has the following beneficial effects:
the speed measuring nut structure of the shielding motor provided by 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, has 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, can prevent loosening when the speed measuring nut is positioned at any circumferential angle position after being pre-tightened according to the designed pre-tightening torque, has higher anti-loosening torque, strong stability under the working condition of high-speed rotation, is insensitive to temperature change, can be repeatedly used under the normal use condition, does not need to be replaced, is particularly suitable for the occasion of frequent disassembly and assembly, and overcomes the defects of unstable anti-loosening torque, component replacement, poor operability, easy damage to the surface of a part, poor temperature tolerance and the like of the conventional anti-loosening structure. Therefore, in the field of speed measurement and looseness prevention, the speed measurement nut structure of the shielding motor has wide application value.
Drawings
FIG. 1 is a three-dimensional view of the speed measuring nut structure of the present invention;
FIG. 2 is a two-dimensional cross-sectional view of a speed measuring nut structure;
FIG. 3 is a U-U section two-dimensional sectional view of the speed measuring nut structure;
FIG. 4 is a three-dimensional cross-sectional view of a tacho nut base blank;
FIG. 5 is a three-dimensional view of the anti-loosening disc assembly;
FIG. 6 is a two-dimensional top view of the anti-loosening disc assembly;
fig. 7 is a three-dimensional schematic diagram of a tooth-shaped tool for assembling and disassembling the speed measuring nut.
Detailed Description
As shown in fig. 1, a speed measuring nut structure of a shield motor comprises a speed measuring structure and an anti-loosening structure, wherein the speed measuring structure comprises a speed measuring nut base body 1 and a magnetic steel mounting hole 17, a 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 a non-magnetic conductive material, 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 a baffle mounting surface 12, the magnetic steel baffle plate 3 is mounted on the baffle mounting surface 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 manner. The anti-loosening structure comprises a speed-measuring nut base body 1, anti-loosening gear teeth 7, anti-loosening wheel tooth grooves 8, a stepped pin 9, an anti-loosening disc end plate 10, end plate pin holes 14, an anti-loosening disc cavity 11, a pin cavity 15 and a reset spring 16, wherein the lower part of the speed-measuring nut base body 1 is provided with a plurality of anti-loosening gear teeth 7 and anti-loosening wheel tooth grooves 8 which are mutually spaced, the anti-loosening disc cavity 11 and the anti-loosening disc end plate 10 are packaged into a plurality of pin cavities 15, the stepped pin 9 and the reset spring 16 are installed in the pin cavity 15 in series, the position, corresponding to the pin cavity 15, of the anti-loosening disc end plate 10 is provided with the end plate pin hole 14, the large end of the stepped pin 9 is positioned in the anti-loosening disc end plate 10, the stepped pin 9 which is axially pressed by the anti-loosening gear teeth 7 keeps a state of not being positioned in the anti-loosening disc end plate 10, the small end of the stepped pin 9 which is aligned with the anti-loosening wheel tooth grooves 8 penetrates through the end plate pin hole 14 and is higher than the upper plane of the anti-loosening disc end plate 10, and the small end of the stepped pin 9 which is positioned in the anti-loosening disc end plate 10 is positioned in the anti-loosening wheel tooth grooves 8, the tacho nut base 1 is restrained from rotation by the stepped stud 9.
As shown in fig. 4, the vent hole 18 is radially opened at the bottom of the magnetic steel mounting hole 17 on the tacho nut base blank 19, as shown in fig. 3, the magnetic steel 2 is installed in the magnetic steel mounting hole 17 of the tacho nut base 1 made of non-magnetic material, the magnetic steel 2 and the magnetic steel mounting hole 17 are in interference fit, the tacho nut base 1 is formed by assembling and processing the tacho nut base blank 19 and the magnetic steel 2, the outer surfaces of the tacho nut base 1 and the magnetic steel 2 are the induction cylindrical surface 6, 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. The vent holes 18 are removed during the machining of the sensing cylinder 6 and do not remain on the tacho nut base 1.
As shown in fig. 2, the upper end surfaces of the speed measuring nut base body 1 and the magnetic steel 2 are a baffle mounting surface 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 surface 12 through a countersunk screw 4 to compress the magnetic steel 2, and the countersunk screw 4 is packaged on the magnetic steel baffle 3 in a welding mode.
As shown in fig. 1, the lower part of the speed measuring nut body 1 is provided with 24 mutually spaced anti-loose gear teeth 7 and anti-loose gear tooth grooves 8 which are uniformly distributed along the circumference, as shown in fig. 2, the anti-loose disc cavity 11 structure can be integrated on a connected piece or be independently used as a component to be connected with the connected piece through a pin or a key, etc., the anti-loose disc cavity 11 is provided with a plurality of pin cavities 15, a stepped pin 9 is in clearance fit with the anti-loose disc cavity 11, the stepped pin 9 and a return spring 16 are installed in the pin cavities 15 in series, the anti-loose disc end plate 10 is provided with an end plate pin hole 14 corresponding to the pin cavity 15, the large end of the stepped pin 9 is positioned in the anti-loose disc end plate 10, the anti-loose disc end plate 10 is pressed on the stepped end surface of the stepped pin 9, the small end of the stepped pin 9 is higher than the anti-loose disc end plate 10 through the end plate pin hole 14, the return spring 16 is compressed to form a certain preload, until the locking disc end plate 10 contacts with the upper end face of the locking disc cavity 11, the locking disc cavity 11 and the locking disc end plate 10 are welded and packaged to form a plurality of pin cavities 15, and the stepped pin 9 and the return spring 16 are installed in the pin cavities 15 in series.
As shown in fig. 5, 12 pairs of stepped pins 9 are installed in each anti-loosening disc cavity 11, 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 for the head and the tail positions. As shown in fig. 1, the radius of the tooth socket 8 of the anti-loosening wheel is larger than the radius of the small end of the stepped pin 9, as shown in fig. 2, the pitch circle radius of the tooth socket 8 of the anti-loosening wheel is larger than the mounting pitch circle radius of the stepped pin 9, and the difference between the radius of the tooth socket 8 of the anti-loosening wheel and the radius of the small end of the stepped pin 9 is larger than the difference between the pitch circle radius of the tooth socket 8 of the anti-loosening wheel and the mounting 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 wrench to rotate the speed measuring nut base body 1, as shown in fig. 7, the speed measuring structure is provided with a split type tooth type tool 20 for assembly and disassembly and fixed at the position corresponding to the locking gear teeth 7 and the locking gear teeth 8 during assembly and disassembly, the speed measuring structure is installed on a rotating shaft 13 through the speed measuring nut base body 1 by screw threads, in the assembly and disassembly process, the stepped pin 9 is kept not in the locking disc end plate 10 state under the action of axial pressure, the speed measuring structure can freely rotate, after the speed measuring nut is installed and screwed according to the designed pre-tightening torque, the tooth type tool 20 for assembly and disassembly is opened and disassembled, as shown in fig. 1, the stepped pin 9 axially pressed by the locking gear teeth 7 is kept not in the locking disc end plate 10 state, the stepped pin 9 opposite to the locking gear teeth 8 can pass through the end plate pin hole 14 and is positioned on the upper plane of the locking disc end plate 10, the locking gear teeth 7 are limited to rotate by the stepped pins 9 positioned on the locking disc end plates 10. As shown in figure 1, the speed measuring structure can be provided with 1-2 stepped pins 9 at any circumferential installation angle position in the tooth grooves 8 of the anti-loosening wheel so as 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 3, the countersunk screw 4 and the induction cylindrical surface 6 form a speed measuring structure, and the speed measuring nut base body 1, the locking gear teeth 7, the locking gear teeth groove 8, the stepped pin 9, the locking disc end plate 10 and the end plate pin hole 14, the locking disc cavity 11, the pin cavity 15 and the reset spring 16 form a locking structure, so that the locking function at any angle position can be realized, and the speed measuring nut base body has the technical characteristics of higher locking moment, more reliable locking, insensitivity to temperature change, no need of replacement in disassembly and assembly and the like.
Claims (4)
1. The utility model provides a shield motor speed measurement nut structure which characterized by: the magnetic steel anti-loosening device comprises a speed measuring structure and a loosening preventing structure, wherein the speed measuring structure comprises 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 a non-magnetic-conductive material, 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 the induction cylindrical surface (6), the upper end surfaces of the speed measuring nut base body (1) and the magnetic steel (2) are a baffle mounting surface (12), the magnetic steel baffle plate (3) is mounted on the baffle mounting surface (12) through the countersunk screw (4) and compresses the magnetic steel (2), the countersunk screw (4) is packaged on the magnetic steel baffle plate (3) in a welding mode, and the loosening preventing structure comprises the speed measuring nut base body (1), Locking teeth of a cogwheel (7), locking wheel tooth's socket (8), ladder pin (9), locking dish end plate (10) and end plate pinhole (14), locking dish cavity (11) and pin cavity (15), reset spring (16) are constituteed, it has a plurality of mutual spaced locking teeth of a cogwheel (7) and locking wheel tooth's socket (8) to test the speed nut base member (1) lower part along the circumference distribution, locking dish cavity (11) and locking dish end plate (10) encapsulate into a plurality of pin cavities (15), ladder pin (9) and reset spring (16) series connection are installed in pin cavity (15), open the position that corresponds pin cavity (15) on locking dish end plate (10) has end plate pinhole (14), the main aspects of ladder pin (9) are located locking dish end plate (10), the tip of ladder pin (9) passes end plate pinhole (14) and exceeds locking dish end plate (10) upper surface, the tip of pin (9) that exceeds locking dish (10) upper surface is located locking wheel (8) little end plate (10) upper aspects of locking dish (8) pin (9), the tip of ladder pin (9) is located locking dish upper aspects of locking dish ) And (4) the following steps.
2. The speed measuring nut structure of the shielding motor as claimed in claim 1, wherein: the radius of the induction cylindrical surface (6) is smaller than the sum of the radius of a pitch circle of the magnetic steel mounting hole (17) and 2/3 times of the radius of the magnetic steel (2), and the radius of the induction cylindrical surface (6) is larger than the sum of the radius of the pitch circle of the magnetic steel mounting hole (17) and 1/3 times of the radius of the magnetic steel (2).
3. The speed measuring nut structure of the shielding motor as claimed in claim 1, wherein: the speed measuring nut base body (1) is uniformly distributed with 24 mutually-spaced anti-loosening gear teeth (7) and anti-loosening gear tooth grooves (8) along the circumference, a stepped pin (9) is installed in each anti-loosening disc cavity (11), 12 pairs in total are arranged, and the stepped pins (9) are uniformly distributed at intervals of 31.25 degrees along the circumference except the head and tail positions.
4. The speed measuring nut structure of the shielding motor as claimed in claim 1, wherein: the radius of the tooth socket (8) of the anti-loosening wheel is larger than the radius of the small end of the stepped pin (9), the pitch circle radius of the tooth socket (8) of the anti-loosening wheel is larger than the radius of the installation pitch circle of the stepped pin (9), and the difference between the radius of the tooth socket (8) of the anti-loosening wheel and the radius of the small end of the stepped pin (9) is larger than the difference between the radius of the pitch circle of the tooth socket (8) of the anti-loosening wheel and the radius of the installation pitch circle 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 true CN114412907A (en) | 2022-04-29 |
| CN114412907B CN114412907B (en) | 2023-12-05 |
Family
ID=81270988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210023980.1A Active CN114412907B (en) | 2022-01-11 | 2022-01-11 | Speed measuring nut structure of shielding motor |
Country Status (1)
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| CN (1) | CN114412907B (en) |
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 |
| US20200057089A1 (en) * | 2018-08-16 | 2020-02-20 | Hyundai Mobis Co., Ltd. | Apparatus for measuring speed of vehicle having 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 (12)
| 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 |
| US20200057089A1 (en) * | 2018-08-16 | 2020-02-20 | Hyundai Mobis Co., Ltd. | Apparatus for measuring speed of vehicle having in-wheel motor |
| 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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| CN114412907B (en) | 2023-12-05 |
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