CN107504133B - Worm gear reducer - Google Patents
Worm gear reducer Download PDFInfo
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- CN107504133B CN107504133B CN201710981090.0A CN201710981090A CN107504133B CN 107504133 B CN107504133 B CN 107504133B CN 201710981090 A CN201710981090 A CN 201710981090A CN 107504133 B CN107504133 B CN 107504133B
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 46
- 238000007789 sealing Methods 0.000 claims description 34
- 230000002093 peripheral effect Effects 0.000 claims description 27
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000005299 abrasion Methods 0.000 abstract description 12
- 238000009434 installation Methods 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- GQWNECFJGBQMBO-UHFFFAOYSA-N Molindone hydrochloride Chemical compound Cl.O=C1C=2C(CC)=C(C)NC=2CCC1CN1CCOCC1 GQWNECFJGBQMBO-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction 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
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
- F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Transmission (AREA)
Abstract
The invention provides a worm gear reducer, and belongs to the technical field of machinery. The worm gear speed reducer solves the problems that an existing worm gear speed reducer is poor in adjusting precision and easy to abrade. This worm gear speed reducer, including the casing that has the shaft hole, worm wheel and, worm, adjustment sleeve, lock sleeve and lock bolt one, adjustment sleeve threaded connection is in the lock sleeve, the lock sleeve sets up the tip department that is close to the worm output at the casing, the output axial of worm is fixed in the adjustment sleeve, the inner slip of lock sleeve wears to establish in the shaft hole, the outer end has convex annular protruding edge portion, the screw rod portion of lock bolt one passes annular protruding edge portion and casing threaded connection, and lock bolt one's head compresses tightly annular protruding edge portion on the casing. The worm gear reducer eliminates the screw thread clearance between the locking sleeve and the adjusting sleeve through the cooperation of the locking sleeve and the adjusting sleeve, the screw thread clearance of the locking bolt I is almost negligible, the adjusting precision is high, and the abrasion of the worm gear is reduced.
Description
Technical Field
The invention belongs to the technical field of machinery, and relates to a worm gear reducer.
Background
The speed reducer is an independent component consisting of a gear transmission, a worm transmission and a gear-worm transmission enclosed in a rigid shell, and is commonly used as a speed reduction transmission device between a driving element and a working machine, and the speed reducer has the main function of reducing the rotating speed and increasing the torque. The speed reducer is various and can be classified into a gear speed reducer, a worm gear speed reducer and a planetary gear speed reducer according to the transmission type.
In the existing worm gear speed reducer, the worm gear rotation clearance is relatively large, the clearance is large, the indexing movement inaccuracy is caused, intermittent load is caused, vibration and noise are caused when the forward and reverse rotation is frequent, and the abrasion of the worm gear is aggravated.
The applicant has made improvements and filed a patent for the above-mentioned existing problems, and (application number: 201320246627.6) discloses a high-precision worm gear reducer, comprising a housing, a worm and a worm wheel which are engaged with each other and disposed in the housing, wherein an adjusting nut which is disposed on the worm and is movable relative to the housing along the axial direction of the worm is disposed in the housing, the input end of the worm is supported in the adjusting nut by a bearing assembly, the output end of the worm is supported in the housing by a ball bearing which is movable along the axial direction of the worm, and the tooth thickness of the worm is sequentially thickened from the output end to the input end. The worm is driven by the adjusting nut to move, so that the worm is connected with the worm wheel through the meshing teeth with the smallest clearance, and the clearance between the worm wheel and the worm is eliminated. However, the worm gear reducer still has the following defects: according to the speed reducer, the tooth thickness of the worm is set to be sequentially thicker from the output end to the input end, the speed reducer is connected in the shell through the adjusting nut at the input end, the position of the adjusting nut in the shell is adjusted through the threaded fit of the adjusting nut and the shell, so that the worm is driven to move, the gap between the worm and the worm gear is eliminated, but the adjusting nut is arranged at the input end, the input end is also connected with the coupler and the motor, interference is easy to occur during adjustment, and the operation is inconvenient. Meanwhile, as the adjusting nut is matched with the threads of the shell, that is to say, the adjustment can only be realized according to the distance between the threads, the distance between the adjusting nut and the shell is a certain range, the adjusting precision is poor, a certain gap exists between the threads of the adjusting nut, the gap cannot be eliminated through the rotation of the adjusting nut, fine offset can be generated in the gap range in the radial direction and the axial direction, the stability is poor, a certain gap still exists between the worm gear and the worm, vibration and noise are easy to cause after the operation time is long, and the abrasion of the worm gear is aggravated.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a worm gear reducer, which aims to solve the technical problems that: and the clearance between the worm gears is eliminated better, so that the abrasion of the worm gears is reduced.
The aim of the invention can be achieved by the following technical scheme: the utility model provides a worm gear speed reducer, includes the casing that has the shaft hole, sets up worm wheel and the slip of wearing to establish in the shaft hole in the casing, its characterized in that, this speed reducer still includes adjustment sleeve, lock sleeve and lock bolt one, adjustment sleeve threaded connection is in the lock sleeve, the lock sleeve sets up the tip department that is close to the worm output at the casing, the output axial fixity of worm is in the adjustment sleeve, the inner slip of lock sleeve is worn to establish in the shaft hole, the outer end has convex annular protruding edge portion, the screw rod portion of lock bolt one passes annular protruding edge portion and casing threaded connection, just the head of lock bolt one compresses tightly annular protruding edge portion on the casing.
The tooth thickness of the worm gear speed reducer is sequentially thickened from the input end to the output end, meanwhile, the input end of the worm is circumferentially connected in the shaft hole and axially can slide along the shaft hole, the output end of the worm is connected in the adjusting sleeve, the adjusting sleeve is in threaded connection with the locking sleeve, the locking sleeve is pushed to slide in the shaft hole during installation and adjustment, the annular convex edge part of the locking sleeve is abutted against the shell, the first locking bolt is screwed, the first locking bolt is tightly pressed on the annular convex edge part through the head part of the first locking bolt to fix the locking sleeve with the shell, and then the adjusting sleeve is rotated inwards to drive the worm to move inwards, so that the worm is connected with the worm gear through the meshing teeth with the minimum gaps. The outer end of the locking sleeve is provided with the convex annular convex edge part, the locking sleeve is fixed by tightly screwing the locking bolt inwards, namely, the locking sleeve is tightly pressed inwards through the locking bolt, the adjusting sleeve is rotated inwards again to enable the worm to be meshed with the turbine, the reaction force of the worm is outwards pushed, the screw gap between the locking sleeve and the adjusting sleeve can be eliminated through the cooperation of pressing and pushing, the locking bolt is a smaller part, the size of the locking sleeve is smaller compared with that of the existing adjusting nut, the existing screw gap is very small compared with that of the existing adjusting nut, and almost negligible, so that the worm wheel and the worm are always in a tight fit state, the gap cannot exist, the adjusting precision is high, and the abrasion of the worm wheel is reduced. Moreover, the locking sleeve is arranged at one end of the shell close to the output end of the worm in a sliding penetrating way, so that even if slight looseness occurs, the locking sleeve and the first locking bolt can be continuously screwed at any time, the adjusting sleeve is rotated inwards again to perform timely adjustment, interference with other parts cannot be caused during adjustment, and the operation is convenient.
In the worm gear reducer, the worm gear reducer further comprises a second locking bolt, the annular protruding edge part comprises a first annular protruding edge and a second annular protruding edge, a gap is reserved between the first annular protruding edge and the second annular protruding edge is connected through a plurality of connecting blocks, the screw rod part of the first locking bolt penetrates through the first annular protruding edge to be in threaded connection with the shell, the head part of the first locking bolt tightly presses the first annular protruding edge on the shell, the screw rod part of the second locking bolt penetrates through the second annular protruding edge to be in threaded connection with the first annular protruding edge, and the head part of the second locking bolt tightly presses the second annular protruding edge. After the annular convex edge is pressed on the shell by the locking bolt I, the adjusting sleeve is rotated inwards to drive the worm to move inwards, so that the worm is connected with the worm wheel through the meshing teeth with the minimum clearance. The annular convex edge I and the annular convex edge II are connected through the connecting blocks, a gap is reserved between the annular convex edge I and the annular convex edge II, and the locking bolt II is screwed down again, so that the annular convex edge I and the annular convex edge II can be mutually tensioned, and the thread gap between the locking sleeve and the adjusting sleeve can be further eliminated. Simultaneously, through the action of mutual tensioning force, the thread gap existing between the first locking bolt and the second locking bolt can be eliminated, so that the worm gear is in a close fit state all the time, the gap cannot exist, the adjusting precision is higher, and the abrasion of the worm gear is reduced.
In the worm gear reducer, the end face of the shell, which is close to the output end of the worm, is provided with the mounting blind hole, one end of the shaft hole penetrates through the bottom face of the mounting blind hole, the annular protruding edge is embedded into the mounting blind hole and is pressed against the bottom face of the mounting blind hole, and the bottom face of the mounting blind hole and the end face, which is close to the mounting blind hole, of the annular protruding edge are both planes. The bottom surface of installation blind hole and the annular protruding edge are all designed into the plane with the terminal surface that installation blind hole was leaned on mutually, and two planes are mutually supported and are leaned on, and lock sleeve is pressed by lock bolt one after each partial uniformity and stability are good, can not rock and produce the skew, and under the reaction force of cooperation adjusting sleeve through the worm to eliminate the screw thread clearance between lock sleeve and the adjusting sleeve better, make worm gear and worm be in closely fit state all the time, can not have the clearance, the regulation precision is higher, has reduced the wearing and tearing of worm wheel.
In the worm gear reducer, a plurality of first through holes are formed in the annular protruding edge in the circumferential direction, a plurality of first threaded holes corresponding to the first through holes are formed in the bottom surface of the mounting blind hole, the screw portion of the first locking bolt penetrates through the first threaded holes to be connected in the first threaded holes in a threaded mode, a plurality of through holes opposite to the first through holes are formed in the annular protruding edge, the head of the first locking bolt can penetrate through the through holes, a plurality of second through holes are formed in the annular protruding edge in the circumferential direction, a plurality of second threaded holes corresponding to the second through holes are formed in the annular protruding edge, the screw portion of the second locking bolt penetrates through the second threaded holes to be connected in the second threaded holes in a threaded mode, and the first locking bolt and the second locking bolt are located on the same circumference. Through the arrangement, the first locking bolt and the second locking bolt are uniformly distributed on the annular convex edge part along the circumferential direction, so that the stress of each part is uniform, the consistency is good, and the deflection caused by larger local stress can be avoided. Moreover, the first locking bolt and the second locking bolt are located on the same circumference, so that stress points of the first locking bolt and the second locking bolt on the annular convex edge part are located on the same circumference, gaps existing between the first locking bolt and the second locking bolt can be eliminated better and more directly, worm gears can be further in a close fit state all the time, gaps cannot exist, adjusting accuracy is higher, and abrasion of the worm gears is reduced.
In the worm gear reducer, the annular protruding edge is further provided with a plurality of first limiting blind holes, the aperture of the first limiting blind holes is larger than that of the first through holes and is in one-to-one correspondence with the first through holes, the head of the first locking bolt is embedded into the first limiting blind holes and abuts against the bottom surface of the first limiting blind holes, the annular protruding edge is further provided with a plurality of second limiting blind holes, the aperture of the second limiting blind holes is larger than that of the second through holes and is in one-to-one correspondence with the second through holes, the head of the second locking bolt is embedded into the second limiting blind holes and abuts against the bottom surface of the second limiting blind holes, and the end surfaces of the first limiting blind holes, the bottom surfaces of the second limiting blind holes and the end surfaces of the second locking bolts, which abut against the bottom surfaces of the second limiting blind holes, are all planes. The design of spacing blind hole one and spacing blind hole two for locking bolt one and locking bolt two's head can imbed, can not bulge annular protruding along first and annular protruding along the terminal surface of two, and between locking bolt one's head and the bottom surface of spacing blind hole one and between locking bolt two's head and the bottom surface of spacing blind hole two are plane cooperation and support and lean on, stability is better, thereby makes worm gear and worm be in closely fit state all the time, can not have the clearance, and the regulation precision is high, has reduced the wearing and tearing of worm wheel.
In the worm gear reducer, the plurality of connecting blocks are distributed along the circumferential direction, the first annular protruding edge, the second annular protruding edge and the connecting blocks are of an integrated structure, the first through hole is also formed in the connecting position of the first annular protruding edge and the connecting blocks, the through hole is correspondingly formed in the connecting position of the second annular protruding edge and the connecting blocks, and the through hole penetrates through the connecting blocks and the first through hole. The annular protruding edge is also provided with the through hole I at the joint of the connecting block, and the locking bolt I is arranged in the through hole I, so that the annular protruding edge can be always kept to be pressed on the shell, the stability is good, the worm gear is always in a tight fit state, a gap is avoided, the adjusting precision is high, and the abrasion of the worm gear is reduced.
In the worm gear reducer, the outer peripheral surface of the locking sleeve is a smooth curved surface, the inner side wall of the shaft hole is a smooth curved surface, and the locking sleeve is arranged in the shaft hole in a sliding penetrating mode and the outer peripheral surface of the locking sleeve is attached to the inner side wall of the shaft hole. The outer peripheral surface of the locking sleeve and the inner side wall of the shaft hole are designed to be smooth curved surfaces, the outer peripheral surface of the locking sleeve is attached to the inner side wall of the shaft hole, stability is good, further, the locking sleeve is prevented from deviating and shaking in the radial direction, the worm gear is always in a tight fit state, gaps are avoided, adjustment accuracy is high, and abrasion of the worm gear is reduced.
In the worm gear reducer, an annular concave shoulder is arranged on the inner peripheral wall of the outer end of the locking sleeve, an internal thread is arranged on the annular concave shoulder, an annular boss is arranged at the outer end of the adjusting sleeve, an external thread is arranged on the annular boss and is connected in the annular concave shoulder through the matching of the internal thread and the external thread, and the inner end of the adjusting sleeve penetrates into the locking sleeve and is abutted against the inner peripheral wall of the inner end of the locking sleeve. Through set up annular concave shoulder on the interior perisporium of lock sleeve, then set up the internal thread on the annular concave shoulder, the outer end of adjusting sleeve sets up annular boss and has the external screw thread on the annular boss to can guarantee that the inner of adjusting sleeve passes behind the annular concave shoulder, the interior perisporium of adjusting sleeve can keep leaning on mutually with the interior perisporium of lock sleeve, can not produce the skew in radial and rock, thereby make worm gear and worm be in close fit state all the time, can not have the clearance, the regulation precision is high, the wearing and tearing of worm wheel have been reduced.
In the worm gear reducer, the inner peripheral wall of the inner end of the locking sleeve and the outer peripheral wall of the inner end of the adjusting sleeve are smooth curved surfaces. The inner peripheral wall of the inner end of the locking sleeve and the outer peripheral wall of the inner end of the adjusting sleeve are designed to be smooth curved surfaces, the inner peripheral wall and the outer peripheral wall are mutually attached, the stability is good, the locking sleeve is further ensured not to deviate and shake in the radial direction, the worm gear is always in a tight fit state, gaps are avoided, the adjusting precision is high, and the abrasion of the worm gear is reduced.
In the worm gear reducer, the annular sealing grooves are formed in the outer peripheral wall of the inner end of the adjusting sleeve and the outer peripheral wall of the inner end of the locking sleeve, and annular sealing rings are arranged in the annular sealing grooves. Through the design of ring seal, can realize sealing between adjusting collar and the lock collar and between lock collar and the shaft hole inner wall, prevent impurity etc. in the air from getting into in the shaft hole, cause the corruption to worm gear.
In the worm gear reducer, the adjusting sleeve is cylindrical and is provided with openings at two ends, the opening of the adjusting sleeve is further provided with the first sealing cover, the outer side wall of the first sealing cover is tightly abutted against the inner peripheral wall of the adjusting sleeve, the end port of the shaft hole, which is close to the input end of the worm, is provided with the second sealing cover, the second sealing cover is annular, the outer side wall of the second sealing cover is tightly abutted against the inner side wall of the shaft hole, the inner ring is provided with the sealing lip, and the worm penetrates through the inner ring of the second sealing cover and the sealing lip is abutted against the worm. The design of the first sealing cover and the second sealing cover can ensure the sealing of the shaft hole at the input end and the output end, prevent impurities in air and the like from entering the shaft hole and corrode the worm gear.
Compared with the prior art, the worm gear reducer has the following advantages:
1. the locking sleeve is fixed by tightly screwing the locking bolt inwards, namely the locking sleeve is inwards pressed, the adjusting sleeve is inwards rotated to enable the worm to be meshed with the turbine, and then the reacting force of the worm has an outward pushing trend, so that the screw thread gap between the locking sleeve and the adjusting sleeve is eliminated through the cooperation of pressing and pushing, the locking bolt is a small component, the size is small compared with the existing adjusting nut, the existing screw thread gap is small compared with the existing screw thread gap on the existing adjusting nut, the existing screw thread gap is almost negligible, the worm wheel and the worm are always in a tight fit state, the gap does not exist, the adjusting precision is high, and the abrasion of the worm wheel is reduced.
2. The second locking bolt can be used for tensioning the first annular protruding edge and the second annular protruding edge, so that a thread gap existing in the first locking bolt is eliminated, and meanwhile, the thread gap existing in the second locking bolt can be eliminated through the action of the mutual tensioning force, so that the worm and gear can be further in a tight fit state all the time, a gap cannot exist, the adjusting precision is higher, and the abrasion of the worm gear is reduced.
3. The design of annular sealing ring, sealed lid one and sealed lid two can realize multiple sealed, prevents that impurity etc. in the air from getting into in the shaft hole, causes the corruption to worm gear.
Drawings
Fig. 1 is a perspective view of the worm gear reducer.
Fig. 2 is a cross-sectional view of the worm gear reducer.
Fig. 3 is a perspective view of the lock sleeve.
Fig. 4 is a front view of the locking sleeve.
Fig. 5 is a cross-sectional view taken along the direction A-A in fig. 4.
Fig. 6 is a sectional view in the direction B-B of fig. 4.
Fig. 7 is a perspective view of the adjusting sleeve.
Fig. 8 is a cross-sectional view of the adjustment sleeve.
In the figure, 1, a shell; 1a, a shaft hole; 1b, installing a blind hole; 1c, a first threaded hole; 2. a worm wheel; 3. a worm; 4. an adjusting sleeve; 4a, an annular boss; 5. a locking sleeve; 5a, annular convex edge I; 5a1, through hole I; 5a2, a threaded hole II; 5a3, a first limiting blind hole; 5b, annular convex edges II; 5b1, through holes; 5b2, through holes II; 5b3, limiting blind holes II; 5c, gaps; 5d, connecting blocks; 5e, an annular concave shoulder; 6. a first locking bolt; 7. a second locking bolt; 8. a first sealing cover; 9. a second sealing cover; 9a, sealing lips.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 and 2, the worm gear reducer comprises a shell 1, a worm wheel 2, a worm 3, an adjusting sleeve 4, a locking sleeve 5, a first locking bolt 6 and a second locking bolt 7, wherein the worm wheel 2 is arranged in the shell 1, the tooth thickness of the worm 3 is sequentially thickened from an input end to an output end, and the worm 3 is slidably arranged in a shaft hole 1a in a penetrating manner and meshed with the worm wheel 2.
The shell 1 is provided with shaft holes 1a penetrating through two end faces of the shell 1, the input end of the worm 3 is connected in the shaft holes 1a through a ball bearing, the input end of the worm 3 penetrates through the inner ring of the ball bearing and is fixed with the inner ring of the ball bearing, and the outer ring of the ball bearing is attached to the inner wall of the shaft holes 1a and can slide along the shaft holes 1 a. The end port of the shaft hole 1a, which is close to the input end of the worm 3, is provided with a second sealing cover 9, the second sealing cover 9 is annular, the outer ring side wall of the second sealing cover 9 is provided with an annular propping flanging formed by inwards bending, the annular propping flanging is tightly propped against the inner side wall of the shaft hole 1a, the inner ring is provided with a sealing lip 9a, the outer side wall of the sealing lip 9a is also provided with an annular mounting groove, a clamp is sleeved in the mounting groove, and the clamp tightly props the sealing lip 9a against the worm 3.
The end face of the shell 1, which is close to the output end of the worm 3, is provided with a mounting blind hole 1b, and one end of the shaft hole 1a penetrates through the bottom surface of the mounting blind hole 1 b. The lock sleeve 5 is arranged at the end part of the shell 1, which is close to the output end of the worm 3, the outer circumferential surface of the lock sleeve 5 is a smooth curved surface, the inner side wall of the shaft hole 1a is a smooth curved surface, the inner end of the lock sleeve 5 is slidably arranged in the shaft hole 1a in a penetrating manner, the outer circumferential surface of the lock sleeve is attached to the inner side wall of the shaft hole 1a, the stability is good, and offset shaking cannot be generated in the radial direction.
As shown in fig. 2-6, the outer end of the locking sleeve 5 has a convex annular flange. The annular convex edge part comprises an annular convex edge first 5a and an annular convex edge second 5b, a gap 5c is formed between the annular convex edge first 5a and the annular convex edge second 5b and is connected through a plurality of connecting blocks 5d, the gap 5c penetrates through the inner wall of the locking sleeve 5, the connecting blocks 5d are uniformly distributed along the circumferential direction, and the annular convex edge first 5a, the annular convex edge second 5b and the connecting blocks 5d are of an integrated structure. A plurality of through holes I5 a1 and a plurality of limiting blind holes I5 a3 are uniformly formed in the annular protruding edge I5 a along the circumferential direction, and the aperture of the limiting blind hole I5 a3 is larger than that of the through hole I5 a1 and is communicated with the through hole I5 a1 in a one-to-one correspondence manner. The bottom surface of the installation blind hole 1b is provided with a plurality of threaded holes 1c corresponding to the first through hole 5a1, the annular convex edge 5b is provided with a plurality of through holes 5b1 opposite to the first through hole 5a1, the annular convex edge 5a is embedded into the installation blind hole 1b, the screw part of the locking bolt 6 penetrates through the first through hole 5a1 and is in threaded connection with the corresponding threaded hole 1c, the head of the locking bolt 6 can penetrate through the through hole 5b1, the head of the locking bolt 6 is embedded into the limit blind hole 5a3 and is abutted against the bottom surface of the limit blind hole 5a3, the annular convex edge 5a is pressed against the bottom surface of the installation blind hole 1b, and the bottom surface of the installation blind hole 1b and the end surface of the annular convex edge 5a, which is abutted against the installation blind hole 1b, are all planes. The connection part between the annular convex edge one 5a and the connection block 5d is also provided with a through hole one 5a1, the connection part between the annular convex edge two 5b and the connection block 5d is correspondingly provided with a through hole 5b1, and the through hole 5b1 at the connection part penetrates through the connection block 5d and is communicated with the through hole one 5a 1.
A plurality of second through holes 5b2 and a plurality of second limiting blind holes 5b3 are uniformly formed in the annular protruding edge II 5b along the circumferential direction, and the aperture of the second limiting blind holes 5b3 is larger than that of the second through holes 5b2 and is communicated with the second through holes 5b2 in a one-to-one correspondence manner. The annular convex edge one 5a is provided with a plurality of threaded holes two 5a2 corresponding to the through holes two 5b2, and the screw rod part of the locking bolt two 7 penetrates through the through holes two 5b2 and is in threaded connection with the corresponding threaded holes two 5a 2. The head of the second locking bolt 7 is embedded into the second limit blind hole 5b3 and abuts against the bottom surface of the second limit blind hole 5b3, and the bottom surface of the first limit blind hole 5a3, the end surface abutting against the bottom surface of the first limit blind hole 5a3 on the head of the first locking bolt 6, the bottom surface of the second limit blind hole 5b3 and the end surface abutting against the bottom surface of the second limit blind hole 5b3 on the head of the second locking bolt 7 are all planes. The first locking bolt 6 and the second locking bolt 7 are positioned on the same circumference and are distributed at intervals.
As shown in fig. 5, an annular concave shoulder 5e is provided on the inner peripheral wall of the outer end of the lock sleeve 5, and an internal thread is provided on the annular concave shoulder 5 e. As shown in fig. 7 and 8, the adjusting sleeve 4 is cylindrical and has two ends open, the opening of the adjusting sleeve 4 is further provided with a first sealing cover 8, and the outer side wall of the first sealing cover 8 is tightly abutted against the inner peripheral wall of the adjusting sleeve 4. The outer end of the adjusting sleeve 4 is provided with an annular boss 4a, the annular boss 4a is provided with external threads and is connected in an annular concave shoulder 5e through the matching of internal threads and external threads, and the inner end of the adjusting sleeve 4 penetrates into the locking sleeve 5 and is abutted against the inner peripheral wall of the inner end of the locking sleeve 5. Annular sealing grooves are formed in the outer peripheral wall of the inner end of the adjusting sleeve 4 and the outer peripheral wall of the inner end of the locking sleeve 5, annular sealing rings are arranged in the annular sealing grooves, sealing between the adjusting sleeve 4 and the locking sleeve 5 and between the locking sleeve 5 and the inner wall of the shaft hole 1a can be achieved, impurities in air and the like are prevented from entering the shaft hole 1a, and corrosion is caused to the worm 3 of the worm wheel 2. The end part of the adjusting sleeve 4 is also provided with a plurality of force holes for inserting tools, so that the rotating adjustment of the adjusting sleeve 4 is facilitated.
The adjusting sleeve 4 is internally provided with a tapered roller bearing I and a tapered roller bearing II, the inner side wall of the adjusting sleeve 4 is provided with a convex annular abutting table, and the tapered roller bearing I and the tapered roller bearing II are respectively positioned at two sides of the annular abutting table. The output end of the worm 3 passes through the inner rings of the first tapered roller bearing and the second tapered roller bearing, the output end of the worm 3 is provided with a journal, the second tapered roller bearing is clamped and fixed between the journal and the annular abutting table, the output end of the worm 3 is also connected with a locking nut in a threaded manner, and the first tapered roller bearing is locked between the locking nut and the annular abutting table.
During installation and adjustment, the locking sleeve 5 is pushed to slide into the shaft hole 1a and drives the adjusting sleeve 4 and the worm 3 to move, the annular protruding edge 5a of the locking sleeve 5 is embedded into the installation blind hole 1b and abuts against the bottom surface of the installation blind hole 1b, the locking bolt I6 is screwed, the annular protruding edge 5a is pressed by the head of the locking bolt I6, then the adjusting sleeve 4 is rotated, the adjusting sleeve 4 continues to move into the shaft hole 1a through the threaded action, the worm 3 and the worm wheel 2 are connected through the meshing teeth with the smallest gap 5c, the adjusting sleeve 4 has an outward pushing trend through the reaction force of the worm 3 after being pushed inwards, and therefore the threaded gap between the locking sleeve 5 and the adjusting sleeve 4 is eliminated through the cooperation of one pressing one pushing. Then screw up locking bolt two 7 again, cooperation annular protruding edge one 5a and annular protruding edge two 5b between the clearance 5c effect, can be with annular protruding edge one 5a and annular protruding edge two 5b mutual tensioning, can further eliminate the screw thread clearance between lock sleeve 5 and the adjusting sleeve 4, also eliminate the screw thread clearance that locking bolt one 6 itself exists and the screw thread clearance that locking bolt two 7 itself exists through the effect of mutual tensioning simultaneously, thereby can make worm wheel 2 worm 3 be in close fit state all the time, can not have the clearance, the regulation precision is higher, the wearing and tearing of worm wheel 2 have been reduced. Moreover, after long-time use, even if slight looseness occurs, timely adjustment can be performed by continuously tightening the locking sleeve 5 and the locking bolt I6 at any time, interference with other parts can not occur during adjustment, and the operation is more convenient.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (8)
1. The worm gear reducer comprises a shell (1) with a shaft hole (1 a), a worm wheel (2) arranged in the shell (1) and a worm (3) penetrating through the shaft hole (1 a) in a sliding manner, and is characterized by further comprising an adjusting sleeve (4), a locking sleeve (5) and a first locking bolt (6), wherein the adjusting sleeve (4) is in threaded connection with the locking sleeve (5), the locking sleeve (5) is arranged at the end part, close to the output end of the worm (3), of the shell (1), the output end of the worm (3) is axially fixed in the adjusting sleeve (4), the inner end of the locking sleeve (5) is slidably penetrated in the shaft hole (1 a), the outer end of the locking sleeve is provided with a protruding annular protruding edge part, the screw part of the first locking bolt (6) penetrates through the annular protruding edge part to be in threaded connection with the shell (1), and the head part of the first locking bolt (6) tightly presses the annular protruding edge part on the shell (1); the outer peripheral surface of lock sleeve (5) is smooth curved surface, the inside wall of shaft hole (1 a) is smooth curved surface, lock sleeve (5) slip wears to establish in shaft hole (1 a) and outer peripheral surface paste on the inside wall of shaft hole (1 a), have annular concave shoulder (5 e) on the inner peripheral wall of lock sleeve (5) outer end, be equipped with the internal thread on annular concave shoulder (5 e), the outer end of adjusting sleeve (4) has annular boss (4 a), have the external screw thread on annular boss (4 a) and connect in above-mentioned annular concave shoulder (5 e) through the cooperation of internal screw thread and external screw thread, the inner of adjusting sleeve (4) penetrates in lock sleeve (5) and paste with the inner perisporium of lock sleeve (5) inner mutually.
2. The worm gear reducer according to claim 1, further comprising a locking bolt two (7), wherein the annular protruding edge part comprises an annular protruding edge one (5 a) and an annular protruding edge two (5 b), a gap (5 c) is reserved between the annular protruding edge one (5 a) and the annular protruding edge two (5 b) are connected through a plurality of connecting blocks (5 d), a screw part of the locking bolt one (6) penetrates through the annular protruding edge one (5 a) to be in threaded connection with the shell (1), the head part of the locking bolt one (6) presses the annular protruding edge one (5 a) on the shell (1), a screw part of the locking bolt two (7) penetrates through the annular protruding edge two (5 b) to be in threaded connection with the annular protruding edge one (5 a), and the head part of the locking bolt two (7) is pressed on the annular protruding edge two (5 b).
3. The worm and gear reducer according to claim 2, wherein a mounting blind hole (1 b) is formed in an end face of the housing (1) close to the output end of the worm (3), one end of the shaft hole (1 a) penetrates through the bottom face of the mounting blind hole (1 b), the annular protruding edge (5 a) is embedded into the mounting blind hole (1 b) and is pressed against the bottom face of the mounting blind hole (1 b), and the bottom face of the mounting blind hole (1 b) and the end face of the annular protruding edge (5 a) against the mounting blind hole (1 b) are all plane.
4. The worm gear reducer according to claim 3, wherein the annular flange is provided with a plurality of first through holes (5 a 1) along the circumferential direction on the first through hole (5 a), the bottom surface of the mounting blind hole (1 b) is provided with a plurality of second through holes (5 b 2) corresponding to the first through holes (5 a 1), the screw portion of the first locking bolt (6) passes through the first through holes (5 a 1) to be connected in the corresponding first through holes (1 c) in a threaded manner, the annular flange is provided with a plurality of through holes (5 b 1) opposite to the first through holes (5 a 1) on the second annular flange (5 b), the head of the first locking bolt (6) can pass through the through holes (5 b 1), the annular flange is provided with a plurality of second through holes (5 b 2) along the circumferential direction on the second through holes (5 b), the annular flange is provided with a plurality of second threaded holes (5 a 2) corresponding to the second through holes (5 b 2), the second locking bolt portion (7) passes through the second through holes (5 b 2) to be connected in the same circumference as the first locking bolt (7).
5. The worm gear reducer according to claim 4, wherein the annular flange (5 a) is further provided with a plurality of first limit blind holes (5 a 3), the aperture of the first limit blind holes (5 a 3) is larger than the aperture of the first limit blind holes (5 a 1) and is correspondingly communicated with the first limit blind holes (5 a 1), the head of the first locking bolt (6) is embedded into the first limit blind holes and abuts against the bottom surface of the first limit blind holes (5 a 3), the annular flange (5 b) is further provided with a plurality of second limit blind holes (5 b 3), the aperture of the second limit blind holes (5 b 3) is larger than the aperture of the second limit blind holes (5 b 2) and is correspondingly communicated with the second limit blind holes (5 b 2), the head of the second locking bolt (7) is embedded into the second limit blind holes (5 b 3) and abuts against the bottom surface of the second limit blind holes (5 a 3), and the head of the first locking bolt (6) abuts against the bottom surface of the first limit blind holes (5 a 3) and the second limit blind holes (5 b 3) and the top surface of the second limit blind holes (5 b 3) are both locked.
6. The worm gear reducer according to claim 4 or 5, wherein the plurality of connection blocks (5 d) are circumferentially distributed and the first annular flange (5 a), the second annular flange (5 b) and the connection blocks (5 d) are of an integrated structure, the connection part of the first annular flange (5 a) and the connection block (5 d) is also provided with the first through hole (5 a 1), the connection part of the second annular flange (5 b) and the connection block (5 d) is correspondingly provided with the through hole (5 b 1), and the through hole (5 b 1) penetrates through the connection block (5 d) and is communicated with the first through hole (5 a 1).
7. The worm gear reducer according to any one of claims 1 to 5, wherein an inner peripheral wall of an inner end of the lock sleeve (5) and an outer peripheral wall of an inner end of the adjustment sleeve (4) are both smoothly curved.
8. The worm and gear reducer according to any one of claims 1 to 5, wherein annular sealing grooves are formed in the outer peripheral wall of the inner end of the adjusting sleeve (4) and the outer peripheral wall of the inner end of the locking sleeve (5), and annular sealing rings are arranged in the annular sealing grooves.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710981090.0A CN107504133B (en) | 2017-10-20 | 2017-10-20 | Worm gear reducer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710981090.0A CN107504133B (en) | 2017-10-20 | 2017-10-20 | Worm gear reducer |
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| CN107504133A CN107504133A (en) | 2017-12-22 |
| CN107504133B true CN107504133B (en) | 2024-01-02 |
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| CN108019494A (en) * | 2018-01-09 | 2018-05-11 | 台州椒星传动设备有限公司 | A kind of mechanism for axial adjusting of accurate retarding machine input shaft |
| CN109340331B (en) * | 2018-12-17 | 2024-02-20 | 浙江三凯机电有限公司 | Coaxial speed reducer |
| CN109812546B (en) * | 2019-01-09 | 2024-07-09 | 银川威力传动技术股份有限公司 | Tooth side clearance adjustment method |
| CN109882548B (en) * | 2019-04-18 | 2024-01-19 | 佛山市迪龙传动机械有限公司 | Worm gear clearance adjustment mechanism |
| CN109915373A (en) * | 2019-04-24 | 2019-06-21 | 随州亿丰泵业有限公司 | A kind of liquid-ring vacuum pump |
| CN113153979B (en) * | 2021-05-18 | 2022-07-08 | 成都理工大学 | Speed reducer |
Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4112786A (en) * | 1977-01-19 | 1978-09-12 | Robbins & Myers, Inc. | Boltless housing for gear heads and the like |
| US5186068A (en) * | 1991-06-20 | 1993-02-16 | Peerless-Winsmith, Inc. | Gear reducer with backlash eliminator |
| EP0731289A2 (en) * | 1995-03-10 | 1996-09-11 | WEBASTO KAROSSERIESYSTEME GmbH | Drive mechanism for sliding roofs, windows or the like |
| CA2218977A1 (en) * | 1996-11-18 | 1998-05-18 | Dayton Machine Tool Company | Worm gear drive locking apparatus |
| JPH1120724A (en) * | 1997-07-01 | 1999-01-26 | Showa:Kk | Worm gear structure in electric power steering device and backlash regulating method for worm gear |
| EP1010603A2 (en) * | 1998-12-14 | 2000-06-21 | Toyoda Koki Kabushiki Kaisha | An electric power steering apparatus |
| JP2001271913A (en) * | 2000-03-27 | 2001-10-05 | Showa Corp | Worm gear device |
| JP2001341656A (en) * | 2000-06-01 | 2001-12-11 | Toyoda Mach Works Ltd | Electric power steering device and backlash adjustment device for worm gear |
| JP2004082913A (en) * | 2002-08-28 | 2004-03-18 | Kayaba Ind Co Ltd | Reduction gear mechanism of electric power steering device |
| CN2682250Y (en) * | 2004-03-30 | 2005-03-02 | 陈福良 | Worm gear reduction box |
| JP2005255121A (en) * | 2004-03-15 | 2005-09-22 | Nsk Ltd | Electric power steering device |
| JP2007050845A (en) * | 2005-08-19 | 2007-03-01 | Jtekt Corp | Power steering system |
| JP2008223828A (en) * | 2007-03-09 | 2008-09-25 | Jtekt Corp | Reduction gear and method for manufacturing the same |
| CN201353665Y (en) * | 2009-01-14 | 2009-12-02 | 沈阳乾鼎机械制造有限公司 | High-efficiency mechanical drive device |
| JP2010116090A (en) * | 2008-11-14 | 2010-05-27 | Kayaba Ind Co Ltd | Worm reduction gear and electric power steering device |
| JP2012184851A (en) * | 2012-07-03 | 2012-09-27 | Jtekt Corp | Speed reduction gear and method for manufacturing the same |
| JP2012207737A (en) * | 2011-03-30 | 2012-10-25 | Jtekt Corp | Worm reduction gear and electric power steering apparatus |
| CN203239909U (en) * | 2013-05-08 | 2013-10-16 | 台州市行星变速机械厂 | High-precision worm gear and worm reducer |
| JP2014019265A (en) * | 2012-07-17 | 2014-02-03 | Hitachi Automotive Systems Steering Ltd | Electric power steering device |
| DE102014007939A1 (en) * | 2013-05-29 | 2014-12-04 | Mando Corporation | Coaster for electric power steering device |
| GB201511326D0 (en) * | 2014-12-24 | 2015-08-12 | Showa Corp | Power steering apparatus and preload adjustment method thereof |
| JP2016120729A (en) * | 2014-12-24 | 2016-07-07 | 日本精工株式会社 | Electric assist device and its manufacturing method |
| CN207333582U (en) * | 2017-10-20 | 2018-05-08 | 台州椒星传动设备有限公司 | A kind of worm type of reduction gearing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020148315A1 (en) * | 2000-07-14 | 2002-10-17 | Mittendorf Robert J. | Adjustable speed reducer assembly |
-
2017
- 2017-10-20 CN CN201710981090.0A patent/CN107504133B/en active Active
Patent Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4112786A (en) * | 1977-01-19 | 1978-09-12 | Robbins & Myers, Inc. | Boltless housing for gear heads and the like |
| US5186068A (en) * | 1991-06-20 | 1993-02-16 | Peerless-Winsmith, Inc. | Gear reducer with backlash eliminator |
| EP0731289A2 (en) * | 1995-03-10 | 1996-09-11 | WEBASTO KAROSSERIESYSTEME GmbH | Drive mechanism for sliding roofs, windows or the like |
| CA2218977A1 (en) * | 1996-11-18 | 1998-05-18 | Dayton Machine Tool Company | Worm gear drive locking apparatus |
| JPH1120724A (en) * | 1997-07-01 | 1999-01-26 | Showa:Kk | Worm gear structure in electric power steering device and backlash regulating method for worm gear |
| EP1010603A2 (en) * | 1998-12-14 | 2000-06-21 | Toyoda Koki Kabushiki Kaisha | An electric power steering apparatus |
| JP2001271913A (en) * | 2000-03-27 | 2001-10-05 | Showa Corp | Worm gear device |
| JP2001341656A (en) * | 2000-06-01 | 2001-12-11 | Toyoda Mach Works Ltd | Electric power steering device and backlash adjustment device for worm gear |
| JP2004082913A (en) * | 2002-08-28 | 2004-03-18 | Kayaba Ind Co Ltd | Reduction gear mechanism of electric power steering device |
| JP2005255121A (en) * | 2004-03-15 | 2005-09-22 | Nsk Ltd | Electric power steering device |
| CN2682250Y (en) * | 2004-03-30 | 2005-03-02 | 陈福良 | Worm gear reduction box |
| JP2007050845A (en) * | 2005-08-19 | 2007-03-01 | Jtekt Corp | Power steering system |
| JP2008223828A (en) * | 2007-03-09 | 2008-09-25 | Jtekt Corp | Reduction gear and method for manufacturing the same |
| JP2010116090A (en) * | 2008-11-14 | 2010-05-27 | Kayaba Ind Co Ltd | Worm reduction gear and electric power steering device |
| CN201353665Y (en) * | 2009-01-14 | 2009-12-02 | 沈阳乾鼎机械制造有限公司 | High-efficiency mechanical drive device |
| JP2012207737A (en) * | 2011-03-30 | 2012-10-25 | Jtekt Corp | Worm reduction gear and electric power steering apparatus |
| JP2012184851A (en) * | 2012-07-03 | 2012-09-27 | Jtekt Corp | Speed reduction gear and method for manufacturing the same |
| JP2014019265A (en) * | 2012-07-17 | 2014-02-03 | Hitachi Automotive Systems Steering Ltd | Electric power steering device |
| CN203239909U (en) * | 2013-05-08 | 2013-10-16 | 台州市行星变速机械厂 | High-precision worm gear and worm reducer |
| DE102014007939A1 (en) * | 2013-05-29 | 2014-12-04 | Mando Corporation | Coaster for electric power steering device |
| GB201511326D0 (en) * | 2014-12-24 | 2015-08-12 | Showa Corp | Power steering apparatus and preload adjustment method thereof |
| JP2016120729A (en) * | 2014-12-24 | 2016-07-07 | 日本精工株式会社 | Electric assist device and its manufacturing method |
| CN207333582U (en) * | 2017-10-20 | 2018-05-08 | 台州椒星传动设备有限公司 | A kind of worm type of reduction gearing |
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