CN111271364B - Lock nut assembly, nut locking device and nut locking method - Google Patents
Lock nut assembly, nut locking device and nut locking method Download PDFInfo
- Publication number
- CN111271364B CN111271364B CN202010208162.XA CN202010208162A CN111271364B CN 111271364 B CN111271364 B CN 111271364B CN 202010208162 A CN202010208162 A CN 202010208162A CN 111271364 B CN111271364 B CN 111271364B
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- nut
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- retaining
- locking pad
- pad
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 210000003781 tooth socket Anatomy 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
- 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
- F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
- F16B39/16—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts in which the screw-thread of the locknut differs from that of the nut
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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
-
- 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
- F16B39/04—Locking of screws, bolts or nuts in which the locking takes place after screwing down with a member penetrating the screw-threaded surface of at least one part, e.g. a pin, a wedge, cotter-pin, screw
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
The invention discloses a lock nut assembly, a nut locking device and a nut locking method. The locking nut component comprises a locking pad, a retaining nut, a disc spring positioning jackscrew and a retaining taper pin; the central hole of the locking pad is a stepped hole with a large upper part and a small lower part, the lower end surface of the locking pad is provided with a plurality of trapezoid teeth, and the trapezoid teeth are uniformly distributed along the circumference; the lower section of the retaining nut is cylindrical, the upper section is hexagonal, and the center hole of the retaining nut is a threaded hole; the lower section of the retaining nut is matched with the big hole of the locking pad, the belleville spring is arranged between the upper end face of the locking pad and the hexagonal lower end face of the retaining nut, the belleville spring positioning jackscrew is arranged in the radial small thread through hole of the locking pad, and the bottom end of the belleville spring positioning jackscrew is tightly pressed on the retaining nut; the retaining taper pin penetrates through the locking pad and the retaining nut in the radial direction, and two pin holes on the locking pad are kidney-shaped holes. The lock nut component can effectively prevent the locked nut from loosening, so that the footing is reliably positioned after equipment is installed, and alignment and debugging are not needed again.
Description
Technical Field
The invention relates to the field of machinery, in particular to a structure and a method for locking a nut.
Background
At present, after the installation and debugging of mechanical equipment are finished, the footing of the equipment is required to be positioned through bolts and nuts to prevent the equipment from loosening so as to ensure the precision of the equipment. However, after the mechanical equipment runs for a period of time, due to load changes (such as frequent starting, overload working, eccentricity and the like), the equipment vibrates to loosen nuts, and the conditions of bearing heating damage, motor burnout and the like can occur to influence production, so that the equipment needs to be re-aligned and debugged, which is troublesome and is difficult to ensure that the original installation precision can be restored. Therefore, in order to prevent loosening of the nut, the methods currently adopted are: an elastic washer is added under the nut; increasing the torque of the wrench; the principle of the method is to increase positive pressure by fastening double nuts and the like, so that the friction resistance of loosening the nuts is increased. However, even if the method is used, the equipment is loosened again after being used for a period of time, and alignment and debugging are needed. The realignment and debugging not only occupies production time, but also wastes a great deal of manpower and material resources. Therefore, the nut locking has been the subject of research in all countries around the world.
Disclosure of Invention
The invention aims to provide a lock nut assembly, a nut locking device and a nut locking method. The lock nut component can effectively prevent the locked nut from loosening, so that the footing is reliably positioned after equipment is installed, and alignment and debugging are not needed again. The locked nut and the locking nut component in the nut locking device form a whole, and the locked nut and the locking nut component root on the bolt, so that the locked nut can be effectively prevented from loosening.
The invention relates to a lock nut component, which comprises a lock pad, a retaining nut, a disc spring positioning jackscrew and a retaining taper pin; the central hole of the locking pad is a stepped hole with a large upper part and a small lower part, the lower end surface of the locking pad is provided with a plurality of trapezoid teeth, and the trapezoid teeth are uniformly distributed along the circumference; the lower section of the retaining nut is cylindrical, the upper section is hexagonal, and the center hole of the retaining nut is a threaded hole; the lower section of the retaining nut is matched with the big hole of the locking pad, the belleville spring is arranged between the upper end face of the locking pad and the hexagonal lower end face of the retaining nut, the belleville spring positioning jackscrew is arranged in the radial small thread through hole of the locking pad, and the bottom end of the belleville spring positioning jackscrew is tightly pressed on the retaining nut; the retaining taper pin penetrates through the locking pad and the retaining nut in the radial direction, and two pin holes on the locking pad are kidney-shaped holes.
Further, the shape and the size of the kidney-shaped holes at two positions on the locking pad are the same, and the diameter of the kidney-shaped holes = the diameter of the large end of the retaining taper pin.
Further, the tooth tops of the trapezoid teeth in the locking pad are planes, and the cross section of the trapezoid teeth is right trapezoid: the left end of the tooth top straight line is connected with the end face through a vertical face, and the right end of the tooth top straight line is connected with the end face through an inclined face.
Further, when 24 trapezoidal teeth are uniformly distributed on the end face of the locking pad: wherein, the included angle between the left tooth root line and the right tooth root line of each tooth is 10 degrees, and the line at the right end of the tooth top is positioned on the angular bisector; the included angle between the left line and the right line of the tooth slot is 5 degrees.
The invention relates to a nut locking device, which comprises a bolt, a locked nut and a locking nut component; the bolt is provided with a left-handed thread and a right-handed thread, the nominal diameter M1 of the thread close to the hexagonal head of the bolt is larger than the nominal diameter M2 of the thread close to the bottom of the bolt, the screwing direction of the thread M1 is the same as that of the threaded hole of the locked nut, and the screwing direction of the thread M2 is the same as that of the threaded hole of the backstop nut; the locked nut is screwed on the thread M1, and the lock nut component is screwed on the thread M2; the locked nut is connected with the locking nut component through trapezoidal teeth; the locked nut is tightly pressed on the hexagonal head part of the bolt; the locking nut component is assembled into a whole through the locking pad, the retaining nut, the disc spring positioning jackscrew and the retaining taper pin.
Further, the number of the trapezoidal teeth, the sectional shape of the trapezoidal teeth and the shape of the tooth grooves on the end face of the locked nut are the same as those of the trapezoidal teeth on the end face of the locking pad.
Further, the height h' of the trapezoidal teeth on the end face of the locked nut is slightly larger than the height h of the trapezoidal teeth in the locking pad.
Further, the pitch p' of the lock nut thread is greater than the pitch p of the stop nut thread.
The nut locking method comprises the following steps: ① . Firstly, assembling a locking pad, a retaining nut, a disc spring positioning jackscrew and a retaining taper pin to form a locking nut assembly; ② . When the bolt passes through the footing of the equipment, the locked nut is screwed on the thread M1 of the bolt; then screwing the lock nut assembly onto the bolt, wherein the retaining nut is screwed with the thread M2 of the bolt; ③ . When the tooth top of the lock nut component (lock pad) is at a certain distance L from the tooth top of the locked nut, the disc spring positioning jackscrew is screwed out, so that the disc spring is sprung up to enable the lock pad to move downwards, and the trapezoid teeth on the lower end face of the lock pad are tightly embedded into tooth grooves of the locked nut to form a whole; ④ . The lock nut assembly is then continued to be screwed in until the belleville springs are compressed in place (at which point they are compressed against the feet of the device by the lock nut).
Further, "L" in step three is smaller than the compression amount of the Belleville spring.
According to the locking nut assembly, the locking pad and the locked nut are meshed to form a whole, and the rotation direction of the threaded hole on the retaining nut is opposite to that of the threaded hole on the locked nut, so that the locked nut can be effectively prevented from loosening. In the nut locking device, when the locked nut and the stop nut are in opposite screwing directions, the stop nut is screwed tightly by pushing the bevel edge of the tooth socket of the locked nut through the bevel edge of the tooth; if the locked nut is loosened, the straight edges of the teeth of the locked nut are contacted with the straight edges of the tooth grooves of the retaining nut, so that the retaining nut is pushed to rotate in the screwing direction, and therefore the locked nut cannot be loosened.
Drawings
FIG. 1 is a front view of a cage nut assembly of the present invention;
FIG. 2 is a bottom view of FIG. 1;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is a front view of the locking pad;
FIG. 5 is a bottom view of FIG. 4;
FIG. 6 is a front view of the backstop nut;
FIG. 7 is a schematic view of a bolt;
FIG. 8 is a front view of the locked nut;
FIG. 9 is a top view of FIG. 8;
fig. 10 is a schematic view of the nut lock of the present invention.
Detailed Description
Examples
As can be seen from fig. 1,2, 3,4, 5, 6, 7, 8 and 9, the lock nut assembly of the present invention comprises a lock pad 3, a retaining nut 5, a disc spring 4, a disc spring positioning jackscrew 1 and a retaining taper pin 2; the central hole of the locking pad 3 is a stepped hole with a large upper part and a small lower part, a plurality of trapezoid teeth are arranged on the lower end surface of the locking pad, and the trapezoid teeth are uniformly distributed along the circumference; the lower section of the retaining nut 5 is cylindrical, the upper section is hexagonal, and the center hole is a threaded hole; the lower section of the retaining nut 5 is matched with a large hole of the locking pad 3, the belleville spring 4 is arranged between the upper end face of the locking pad 3 and the hexagonal lower end face of the retaining nut 5, the belleville spring positioning jackscrew 1 is arranged in a radial small thread through hole of the locking pad 3, and the bottom end of the belleville spring positioning jackscrew is tightly pressed on the retaining nut 5; the retaining taper pin 2 penetrates through the locking pad 3 and the retaining nut 5 along the radial direction, and two pin holes on the locking pad 3 are kidney-shaped holes. Wherein, the taper of the stop taper pin 2 is 1:50.
During assembly, the disc spring 4 is sleeved on the lower section of the retaining nut 5, then the lower section of the retaining nut 5 is installed in a large hole of the locking pad 3, the disc spring 4 is tightly pressed on the upper end face of the locking pad 3, then the disc spring positioning jackscrew 1 is installed, and then a round hole of a pin hole is drilled; at this time, the locking pad 3, the retaining nut 5, the disc spring 4 and the disc spring positioning jackscrew 1 are disassembled, and finally, two pin holes on the locking pad 3 are independently machined, and a kidney-shaped hole is machined by taking the round hole as the center. During the use, the backstop taper pin 2 can guarantee the relative position relation between the backstop nut 5 and the locking pad 3, thereby guaranteeing the reliability of locking the locking nut component. Meanwhile, when the lock nut assembly is required to be integrally disassembled, the retaining taper pin 2 can be taken out.
When the locking nut component is used, the trapezoidal teeth are also arranged on the end surfaces of the locked nut corresponding to the locking pad, the locking pad and the locked nut are meshed to form a whole, and the screwing direction of the threaded hole on the retaining nut is opposite to that of the threaded hole on the locked nut, so that the locked nut can be effectively prevented from loosening.
Examples
The lock nut component comprises: the shape and the size of the kidney-shaped holes at two positions on the locking pad 3 are the same, and the diameter of the kidney-shaped holes = the diameter of the big end of the retaining taper pin 2.
Therefore, the small end of the retaining cone pin 2 can not be in contact with the kidney-shaped hole, and stress can not be applied, so that the retaining cone pin 2 is prevented from moving from a small diameter to a large diameter to loosen, the locking pad 3 and the retaining nut are prevented from loosening, and the locking reliability is ensured. Meanwhile, when the disc spring positioning jackscrew 1 is loosened, the locking pad 3 moves under the action of the disc spring 4, and the waist-shaped hole ensures the movement of the locking pad 3. The stop taper pin 2 is in clearance fit with the pin hole.
Examples
The lock nut component comprises: the tooth tops of the trapezoid teeth in the locking pad 3 are planes, and the cross section of the trapezoid teeth is right trapezoid: the left end of the tooth top straight line is connected with the end face through a vertical face, and the right end of the tooth top straight line is connected with the end face through an inclined face. Thus, one face of the tooth is a bevel, the other face is a straight face, one face of the tooth slot is a bevel, and the other face is a straight face. The trapezoid surface is mainly beneficial for the end face teeth to enter the tooth grooves, and the straight surface is mainly used for preventing the nut from loosening.
When 24 trapezoidal teeth are uniformly distributed on the end face of the locking pad 3: wherein, the included angle between the left tooth root line and the right tooth root line of each tooth is 10 degrees, and the line at the right end of the tooth top is positioned on the angular bisector; the included angle between the left line and the right line of the tooth slot is 5 degrees.
The number of trapezoid grooves on the end face is designed according to the torque and the indexing of adjacent groove teeth: from the aspect of strength, the more the tooth graduation is, the narrower the tooth width is, the more the teeth are broken easily, so that if the loosening torque of the end face trapezoidal groove nut is larger, the more the number of teeth which are not broken easily is larger, and the specific number is calculated by the strength; the more the teeth are indexed, the better the tightening effect is from the tightening aspect. Therefore, in the case where the torque is not large, the fastening effect is better as the number of teeth is larger, such as 72 teeth, 36 teeth, and the like.
Examples
As can be seen from fig. 10, the nut locking device of the present invention comprises a bolt 6, a locked nut 7, and a lock nut assembly 8; the bolt 6 is provided with a left-handed thread and a right-handed thread, the nominal diameter M1 of the thread close to the hexagonal head of the bolt is larger than the nominal diameter M2 of the thread close to the bottom of the bolt, the screwing direction of the thread M1 is the same as that of the threaded hole of the locked nut 7, and the screwing direction of the thread M2 is the same as that of the threaded hole of the backstop nut 5; the locknut 7 is screwed on the thread M1, and the locknut component 8 is screwed on the thread M2; the locked nut 7 is connected with the locking nut component 8 through trapezoidal teeth; the locked nut 7 is fastened on the hexagonal head of the bolt 6 through end face teeth; the locking nut component 8 is assembled into a whole through the locking pad 3, the retaining nut 5, the disc spring 4, the disc spring positioning jackscrew 1 and the retaining taper pin 2.
The number of the trapezoidal teeth on the end face of the locked nut 7, the sectional shape of the trapezoidal teeth and the shape of the tooth grooves are the same as those of the trapezoidal teeth on the end face of the locking pad 3. That is, the lock nut 7 and the lock nut assembly 8 are engaged with each other by teeth on both end surfaces of the lock nut 7 and the lock washer 3 to form a single body.
Specifically, the end face teeth of the nut are bevel edges along the fastening direction of the nut, and straight edges along the loosening direction of the nut, so that when the locked nut 7 and the locking nut 5 (locking nut component 8) are oppositely rotated, the locking nut 5 (locking nut component 8) is tightly screwed by pushing the bevel edges of tooth grooves of the locked nut 7 through the bevel edges of the teeth; if the locking nut 7 is loosened, the straight edges of the teeth of the locking nut are contacted with the straight edges of the tooth grooves of the retaining nut 5 (the locking nut component 8), so that the retaining nut 5 (the locking nut component 8) is pushed to rotate in the screwing direction, and therefore the locking nut cannot be loosened (namely, the locking nut is balanced through the positive torque and the negative torque, and the locking purpose is achieved).
Wherein the height h' of the trapezoidal teeth of the locked nut 7 is slightly larger than the height h of the trapezoidal teeth of the locking pad 3.
Illustrating: for example, the height h' =2.5 mm of the trapezoidal teeth of the lock nut 7, and the height h=2 mm of the trapezoidal teeth of the lock pad 3. The height of the trapezoidal teeth of the locked nut is h' =2.5 mm, namely the depth=2.5 mm of the tooth groove, and the height h=2 mm of the trapezoidal teeth of the locking pad 3, so that when the trapezoidal teeth of the locking pad 3 are embedded into the tooth groove of the locked nut 7, tooth tops of the locking pad cannot touch tooth roots of the locked nut, the trapezoidal teeth of the locking pad are all arranged in the tooth groove of the locked nut, the reliability of engagement connection of the locking pad and the locked nut is guaranteed, locking quality is guaranteed, and loosening is prevented better.
Wherein the thread pitch p' of the thread of the locked nut 7 is greater than the thread pitch p of the thread of the retaining nut 5.
Thus, when the axial distance between the locked nut 7 and the retaining nut 5 is the same, the number of turns of the retaining nut 5 is larger than that of the locked nut, so that the retaining nut 5 can sufficiently lock the locked nut 7.
Examples
The nut locking method comprises the following steps: ① . Firstly, a locking nut component 8 is formed by assembling a locking pad 3, a retaining nut 5, a disc spring 4, a disc spring positioning jackscrew 1 and a retaining taper pin 2; ② . After the bolt 6 passes through the foot of the device 9, the locked nut 7 is screwed on the thread M1 of the bolt 6; then the lock nut assembly 8 is screwed onto the bolt 6, wherein the retaining nut 5 is screwed with the thread M2 of the bolt 6; ③ . When the tooth top of the lock nut component 8 (the lock pad 3) is at a certain distance L from the tooth top of the locked nut 7, the disc spring positioning jackscrew 1 is screwed out, so that the disc spring 4 is sprung up to enable the lock pad 3 to move downwards, and the trapezoid teeth on the lower end face of the trapezoid teeth are tightly embedded into tooth grooves of the locked nut 7 to form a whole; ④ . The nut assembly 8 is then continued to be screwed until the belleville springs 4 are compressed into position (at which point they are compressed against the feet of the device 9 by the nut 7).
Wherein "L" in step three is smaller than the compression amount of the disc spring 4. Thus, when the disc spring positioning jackscrew 1 is unscrewed and the disc spring 4 is sprung, the trapezoidal teeth on the locking pad 3 can be tightly embedded into the tooth grooves of the locked nut 7, so that the trapezoidal teeth and the tooth grooves form a whole.
When the lock nut assembly 8 is tightly pressed on the equipment footing by the lock nut 7, the lock nut assembly 8 (the lock pad 3) and the lock nut 7 form a whole through the engagement of the trapezoidal teeth, and the screw threads of the lock nut 7 and the lock nut assembly 8 stopping the back nut 5 are opposite, so that the loosening direction of the lock nut 7 is the locking direction of the back nut 5, and therefore, the lock nut assembly 8 can effectively prevent the lock nut 7 from loosening. Therefore, the lock nut assembly 8 is equivalent to rooting on the bolt 6, and can effectively prevent loosening by the lock nut 7.
When the equipment 9 needs to be moved or other conditions that the lock nut assembly 8 needs to be disassembled occur, the retaining taper pin 2 in the lock nut assembly 8 only needs to be hammered out by hands.
The locking nut component and the nut locking device can effectively prevent the locked nut from rotating in the loosening direction, thoroughly change the existing method for preventing the fastener from loosening, and are brand-new fastener locking structures, so that the locking is more effective. The invention has the value of popularization.
Claims (8)
1. A locking method of a nut locking device is characterized in that: the method comprises the following steps: ① . Firstly, a locking nut component (8) is formed by assembling a locking pad (3), a retaining nut (5), a disc spring (4), a disc spring positioning jackscrew (1) and a retaining taper pin (2); ② . After the bolt (6) passes through the bottom foot of the equipment (9), the locked nut (7) is screwed on the thread M1 of the bolt (6); then the lock nut component (8) is screwed on the bolt (6), and the screw thread M2 of the nut (5) and the bolt (6) are stopped to be screwed; ③ . When the tooth top of the locking pad (3) is a certain distance L from the tooth top of the locked nut (7), the disc spring positioning jackscrew (1) is screwed out, so that the disc spring (4) is sprung up to enable the locking pad (3) to move downwards, and the trapezoid teeth on the lower end face of the trapezoid teeth are tightly embedded into tooth grooves of the locked nut (7) to enable the trapezoid teeth and the tooth grooves to form a whole; ④ . Continuing to screw the lock nut assembly (8) until the belleville springs (4) are compressed in place; the nut locking device comprises a bolt (6), a locked nut (7) and a locking nut assembly (8); the locking nut assembly (8) comprises a locking pad (3), a retaining nut (5), a disc spring (4), a disc spring positioning jackscrew (1) and a retaining taper pin (2); the central hole of the locking pad (3) is a stepped hole with a large upper part and a small lower part, a plurality of trapezoid teeth are arranged on the lower end surface of the locking pad, and the trapezoid teeth are uniformly distributed along the circumference; the lower section of the retaining nut (5) is cylindrical, the upper section is hexagonal, and the center hole is a threaded hole; the lower section of the retaining nut (5) is matched with a large hole of the locking pad (3), the belleville spring (4) is arranged between the upper end face of the locking pad (3) and the hexagonal lower end face of the retaining nut (5), the belleville spring positioning jackscrew (1) is arranged in a radial small thread through hole of the locking pad (3), and the bottom end of the belleville spring positioning jackscrew is tightly pressed on the retaining nut (5); the retaining taper pin (2) penetrates through the locking pad (3) and the retaining nut (5) along the radial direction, and two pin holes on the locking pad (3) are kidney-shaped holes; the bolt (6) is provided with a left-handed thread and a right-handed thread, the nominal diameter M1 of the thread close to the hexagonal head of the bolt is larger than the nominal diameter M2 of the thread close to the bottom of the bolt, the screwing direction of the thread M1 is the same as that of the threaded hole of the locked nut (7), and the screwing direction of the thread M2 is the same as that of the threaded hole of the retaining nut (5); the locked nut (7) is connected with the locking nut component (8) through trapezoidal teeth; the locked nut (7) is tightly pressed on the hexagonal head of the bolt (6).
2. The locking method according to claim 1, characterized in that: the shape and the size of the kidney-shaped holes at two positions on the locking pad (3) are the same, and the diameter of the kidney-shaped holes = the diameter of the big head of the backstop taper pin (2).
3. The locking method according to claim 1, characterized in that: the tooth tops of the trapezoid teeth in the locking pad (3) are planes, and the cross section of the trapezoid teeth is right trapezoid: the left end of the tooth top straight line is connected with the end face through a vertical face, and the right end of the tooth top straight line is connected with the end face through an inclined face.
4. The locking method according to claim 1, characterized in that: when 24 trapezoidal teeth are uniformly distributed on the end face of the locking pad (3): wherein, the included angle between the left tooth root line and the right tooth root line of each tooth is 10 degrees, and the line at the right end of the tooth top is positioned on the angular bisector; the included angle between the left line and the right line of the tooth slot is 5 degrees.
5. The locking method according to claim 1, characterized in that: the number of the trapezoidal teeth, the cross-sectional shape of the trapezoidal teeth and the shape of the tooth grooves on the end face of the locked nut (7) are the same as those of the trapezoidal teeth on the end face of the locking pad (3).
6. The locking method according to claim 1, characterized in that: the height h' of the trapezoidal teeth on the end face of the locked nut (7) is slightly larger than the height h of the trapezoidal teeth in the locking pad (3).
7. The locking method according to claim 1, characterized in that: the thread pitch p' of the thread of the locked nut (7) is greater than the thread pitch p of the thread of the backstop nut (5).
8. The locking method according to claim 1, characterized in that: the "L" in step ③ is smaller than the compression amount of the disc spring (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010208162.XA CN111271364B (en) | 2020-03-23 | 2020-03-23 | Lock nut assembly, nut locking device and nut locking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010208162.XA CN111271364B (en) | 2020-03-23 | 2020-03-23 | Lock nut assembly, nut locking device and nut locking method |
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| Publication Number | Publication Date |
|---|---|
| CN111271364A CN111271364A (en) | 2020-06-12 |
| CN111271364B true CN111271364B (en) | 2024-06-04 |
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| CN202010208162.XA Active CN111271364B (en) | 2020-03-23 | 2020-03-23 | Lock nut assembly, nut locking device and nut locking method |
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| CN (1) | CN111271364B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU715834A1 (en) * | 1977-10-03 | 1980-02-15 | Предприятие П/Я А-3395 | Castle nut |
| CN2871950Y (en) * | 2006-01-23 | 2007-02-21 | 许彦杰 | Double-threaded deflection anti-loosing nut |
| CN2921414Y (en) * | 2006-06-05 | 2007-07-11 | 吴健 | Locking bolt |
| CN201714782U (en) * | 2010-04-26 | 2011-01-19 | 宁波东港紧固件制造有限公司 | Dodecagonal quincunx full-thread bolt device with washers |
| CN201908932U (en) * | 2011-02-28 | 2011-07-27 | 杨清立 | Self-locking locknut assembly |
| CN103195786A (en) * | 2013-04-09 | 2013-07-10 | 徐文秀 | Anti-looseness nut |
| CN207879827U (en) * | 2018-02-13 | 2018-09-18 | 丹东隆达化工机械制造有限公司 | A kind of spine dentition formula floor clip |
| CN211901242U (en) * | 2020-03-23 | 2020-11-10 | 安徽恒意硬面工程股份有限公司 | Locking nut assembly and nut locking device |
-
2020
- 2020-03-23 CN CN202010208162.XA patent/CN111271364B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU715834A1 (en) * | 1977-10-03 | 1980-02-15 | Предприятие П/Я А-3395 | Castle nut |
| CN2871950Y (en) * | 2006-01-23 | 2007-02-21 | 许彦杰 | Double-threaded deflection anti-loosing nut |
| CN2921414Y (en) * | 2006-06-05 | 2007-07-11 | 吴健 | Locking bolt |
| CN201714782U (en) * | 2010-04-26 | 2011-01-19 | 宁波东港紧固件制造有限公司 | Dodecagonal quincunx full-thread bolt device with washers |
| CN201908932U (en) * | 2011-02-28 | 2011-07-27 | 杨清立 | Self-locking locknut assembly |
| CN103195786A (en) * | 2013-04-09 | 2013-07-10 | 徐文秀 | Anti-looseness nut |
| CN207879827U (en) * | 2018-02-13 | 2018-09-18 | 丹东隆达化工机械制造有限公司 | A kind of spine dentition formula floor clip |
| CN211901242U (en) * | 2020-03-23 | 2020-11-10 | 安徽恒意硬面工程股份有限公司 | Locking nut assembly and nut locking device |
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| CN111271364A (en) | 2020-06-12 |
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