CN111779812B - Mechanical speed reducer capable of outputting reciprocating swing - Google Patents
Mechanical speed reducer capable of outputting reciprocating swing Download PDFInfo
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- CN111779812B CN111779812B CN202010614467.0A CN202010614467A CN111779812B CN 111779812 B CN111779812 B CN 111779812B CN 202010614467 A CN202010614467 A CN 202010614467A CN 111779812 B CN111779812 B CN 111779812B
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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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
- F16H37/122—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types for interconverting rotary motion and oscillating motion
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Abstract
In the mechanical speed reducer with the output reciprocating swing, a shifting fork cylinder is arranged in a box body, and an output shaft is arranged in the shifting fork cylinder. A nut body is arranged on one side of the box body, a transmission hole perpendicular to the output shaft is formed in the nut body, and an input shaft is arranged in the transmission hole; the input shaft is provided with two spiral grooves with opposite rotation directions, and the end parts of the spiral grooves are connected with the aqueducts; the nut body is internally provided with a rotating hole, a crescent pin is arranged in the rotating hole, the crescent pin comprises a shaft neck and crescent teeth, the axis of the crescent pin is parallel to the output shaft, and the crescent teeth are arranged in the spiral groove; the box body is provided with a stop chute parallel to the input shaft, the nut body is provided with a guide wheel, and the guide wheel can move along the stop chute; the nut body is provided with a roller groove, a roller is arranged in the roller groove, and the axis of the roller is parallel to the axis of the output shaft; the shifting fork cylinder is connected with two shifting forks, and the idler wheels are arranged between the shifting forks. The utility model has simple and compact structure, can realize speed reduction transmission, and controls the transmission ratio through the pitch of the input shaft and the working length of the input shaft.
Description
Technical Field
The utility model belongs to the technical field of mechanical transmission, and particularly relates to a mechanical speed reducer capable of outputting reciprocating swing.
Background
In mechanical devices, many actuators are in reciprocating swing motion, such as large ship locks, mechanical arms, loading platforms, etc., and the drive motor and engine are often rotated in one direction, so a set of transmission mechanisms is required to convert the input unidirectional rotary motion into reciprocating swing output.
The prior art output reciprocating swing mechanical transmission device generally adopts a plane connecting rod mechanism such as a guide rod mechanism or a crank rocker mechanism and the like as described in Chinese patent No. 206090387U, and has the defects that the speed of a working stroke is inconsistent with that of a return stroke, the speed fluctuation is relatively large, and the working stability of the machine is affected; the other disadvantage of the link mechanism is that the layout of the components is not compact, the volume is relatively large, and the link mechanism is difficult to design into a closed structure, and is not suitable for special working conditions such as underwater, high temperature, dust and the like.
The cam mechanism can also be used for realizing the transmission of output reciprocating swing, as described in Chinese patent No. 202017747U, a spiral sheet-shaped cylindrical cam is used for driving a V-shaped shifting fork on the output shaft to drive the output shaft to reciprocate. The cam with the structure has complex outline shape, large outer diameter size and compact mechanism, and in addition, the contact surfaces of the rollers at the two ends of the V-shaped shifting fork and the cam cannot be purely rolled and keep constant contact clearance in the working process, so that abrasion is easy to generate, and the transmission precision is influenced.
The swing frequency of the output shaft of the link mechanism and the cam mechanism is equal to the swing frequency of the input shaft, the speed reduction function is not provided, and in the occasion of increasing the output torque, a gear speed reduction mechanism, such as the mechanism proposed in the Chinese patent No. 105605182B, is required to be designed, so that two-stage speed reduction is realized by adopting worm transmission and movable tooth transmission, and the complexity and the manufacturing cost of the device are increased.
Disclosure of Invention
The utility model aims at overcoming the defects of the prior art, and provides a mechanical speed reducing device capable of outputting reciprocating swing, which has the advantages of stable motion, simple composition, compact structure, high transmission precision and long service life, has a speed reducing function, has the swing frequency of an output shaft smaller than the rotation frequency of an input shaft, can increase the moment of the output shaft, can adjust the speed ratio of input and output according to the requirement, realizes the complete sealing of a mechanism, and can operate in various external environments.
The technical scheme for solving the technical problems is as follows: a mechanical speed reducer for outputting reciprocating swing comprises a box body, an input shaft, an output shaft and a shifting fork cylinder; the shifting fork cylinder is positioned in the box body, and the output shaft is positioned in the shifting fork cylinder; one side of the box body is provided with an accommodating space, a nut body is arranged in the accommodating space, a transmission hole perpendicular to the output shaft is formed in the middle of the nut body, and the input shaft is arranged in the transmission hole; the input shaft is provided with two spiral grooves with opposite rotation directions, and the ends of the two spiral grooves are communicated through a transition groove along the circumferential direction of the input shaft; the nut body is internally provided with a rotating hole communicated with the transmission hole, a crescent pin is arranged in the rotating hole and comprises a cylindrical shaft neck and crescent teeth connected to the shaft neck, the shaft neck is rotatably arranged in the rotating hole, the axis of the crescent pin is parallel to the output shaft, and the crescent teeth are arranged in the spiral groove; the box body at the outermost side of the accommodating space is provided with a stop chute parallel to the input shaft, the outermost side of the nut body is provided with a guide wheel, and the guide wheel can move along the stop chute; the nut body is provided with a roller groove, a roller is arranged in the roller groove, and the axis of the roller is parallel to the axis of the output shaft; one side of the shifting fork cylinder is connected with two shifting forks, the inner surfaces of the shifting forks are two parallel planes, and the idler wheels are arranged between the shifting forks.
The mechanical speed reducer for outputting reciprocating swing adopts the transmission of an input shaft, the continuous rotary motion of the input shaft is firstly converted into the reciprocating linear motion of a nut body, the axis of an output shaft is vertical to the input shaft, a shifting fork cylinder is arranged on the output shaft, and a shifting fork is driven by a roller on the nut body to realize the reciprocating swing of the output shaft. The device has the advantages of simple structure, compact structure, full sealing, stable operation, reliable operation, speed reduction transmission and control of the transmission ratio through the pitch of the input shaft and the working length of the input shaft.
The utility model is further arranged that output shaft bearings are arranged outside the output shafts at the two ends of the shifting fork cylinder, a left end cover is arranged on the left side of the output shaft bearings and the box body, a right end cover is arranged on the right side of the output shaft bearings and the box body, and large sealing rings are respectively arranged between the left end cover and the output shaft and between the right end cover and the output shaft; an input shaft bearing is arranged between the two ends of the input shaft and the box body, a front end cover and a rear end cover are respectively arranged on the outer sides of the input shaft bearing, and a small sealing ring is arranged between the front end cover and the input shaft.
The utility model further provides that the guide wheel comprises a guide wheel shaft and a guide wheel bearing, wherein the guide wheel bearing is arranged outside the guide wheel shaft, and the guide wheel bearing is arranged in the stop sliding groove and can roll and move along the stop sliding groove.
The utility model is further arranged that the roller groove is perpendicular to the axis of the crescent pin, a roller shaft is fixed in the middle of the roller, and the roller shaft is arranged on the nut bodies on two sides of the roller groove.
The crescent tooth further comprises a tooth top and a tooth root, wherein the tooth top and the tooth root are arc surfaces, the axis of the arc surface of the tooth top is not coincident with the axis of the arc surface of the tooth root and intersects with the axis of the shaft neck, the radius of the arc surface of the tooth top is larger than the outer diameter of the groove bottom of the spiral groove, and the radius of the arc surface of the tooth root is smaller than the sum of the radius of the arc surface of the tooth top and the tooth height.
The utility model is further characterized in that an inner axial key groove is formed in the outer surface of the output shaft, a corresponding outer axial key groove is formed in the inner surface of the shifting fork cylinder, and keys are arranged in the inner axial key groove and the outer axial key groove.
The utility model further provides that the outer diameter of the roller is equal to the distance between the two shifting forks.
The utility model is further arranged that the rotating hole is internally provided with a double-row bearing, and the shaft neck is arranged in an inner hole of the double-row bearing.
The utility model is further provided that a bottom plate is fixed on the box body at the outermost side of the accommodating space, and the bottom plate is provided with the stop chute; the appearance of nut body is the cuboid.
The utility model further provides that the thread groove is a rectangular thread, a trapezoid or a triangular thread.
The utility model is further arranged that a rectangular through hole is formed in the shifting fork cylinder between the shifting forks.
In summary, the utility model has the following beneficial effects: the device has simple and compact structure, can realize speed reduction transmission, and controls the transmission ratio through the pitch of the input shaft and the working length of the input shaft. A plurality of circles of closed grooves are formed through the communication of the spiral grooves and the transition grooves, the crescent moon pin is driven, the nut body makes reciprocating rectilinear motion along the axis of the stop sliding groove, the shifting fork is driven by the idler wheels, the shifting fork barrel is driven to rotate, and output reciprocating motion of the output shaft is achieved. The nut body moves back and forth, the input shaft rotates for a plurality of circles, and the effects of reducing speed and increasing output torque are achieved. The swing frequency of the output shaft is smaller than the rotation frequency of the input shaft, so that the moment of the output shaft can be increased, and the speed ratio of the input and the output can be adjusted according to actual needs.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the present utility model;
FIG. 2 is a schematic view of a longitudinal section of an embodiment of the present utility model;
FIG. 3 is a schematic view of the structure of the nut body of the present utility model;
FIG. 4 is a schematic diagram of an input shaft according to the present utility model;
FIG. 5 is a schematic view of the external configuration of the crescent pin of the present utility model;
FIG. 6 is a schematic view of the tooth root and tip structures of the present utility model;
fig. 7 is a schematic view of the external structure of the shifting fork barrel in the utility model.
Legend description: 1. a left end cover; 2. an output shaft; 3. a case; 4. a shift fork cylinder; 4-1, shifting fork; 5. a key; 6. an output shaft bearing; 7. a right end cover; 8. a rear end cover; 9. an input shaft bearing; 10. a spiral groove; 11. a transition groove; 12. a front end cover; 13. an input shaft; 14. a roller shaft; 15. a roller; 16. a nut body; 17. a stop chute; 18. a bottom plate; 19. a guide wheel shaft; 20. a guide wheel bearing; 21. a double row bearing; 22. circlips for holes; 23. circlips for shafts; 24. a crescent pin; 24-1, journal; 24-2, crescent teeth; 24-2-1, tooth tops; 24-2-2, root of tooth; 25. a large seal ring; 26. a small seal ring; 27. rectangular through holes; 28. a transmission hole; 29. a rotation hole; 30. a guide wheel hole; 31. roller grooves.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model provides a mechanical speed reducer for outputting reciprocating swing, which is shown in fig. 1-3, and comprises a box body 3, an input shaft 13, an output shaft 2 and a shifting fork cylinder 4. The shifting fork cylinder 4 is positioned in the box body 3, and the output shaft 2 is positioned in the shifting fork cylinder 4. One side of the box body 3 is provided with an accommodating space, a nut body 16 is arranged in the accommodating space, a transmission hole 28 perpendicular to the output shaft 2 is formed in the middle of the nut body 16, and an input shaft 13 is arranged in the transmission hole 28. Referring to fig. 4, the input shaft 13 is provided with two spiral grooves 10 with opposite rotation directions, the ends of the two spiral grooves 10 are communicated through a transition groove 11 along the circumferential direction of the input shaft 13, and the end of the transition groove 11 is in an outward-expanding shape so as to facilitate the rotation angle of the crescent pin 24. The nut body 16 is internally provided with a rotating hole 29 communicated with the transmission hole 28, the rotating hole 29 is internally provided with a crescent pin 24, and referring to fig. 5, the crescent pin 24 comprises a cylindrical shaft neck 24-1 and crescent teeth 24-2 connected to the shaft neck 24-1, the shaft neck 24-1 is rotatably arranged in the rotating hole 29, the rotating hole 29 is internally provided with a double-row bearing 21, the shaft neck 24-1 is arranged in an inner hole of the double-row bearing 21, the axis of the crescent pin 24 is parallel to the output shaft 2, and the crescent teeth 24-2 are arranged in the spiral groove 10. The box body 3 at the outermost side of the accommodating space is provided with a stop chute 17 parallel to the input shaft 13, the outermost side of the nut body 16 is provided with a guide wheel hole 30, a guide wheel is arranged in the guide wheel hole 30, and the guide wheel can move along the stop chute 17. The nut body 16 is provided with a roller groove 31, the roller 15 is arranged in the roller groove 31, and the axis of the roller 15 is parallel to the axis of the output shaft 2. Referring to fig. 7, two forks are connected to one side of the fork cylinder 4, the inner surfaces of the forks are two parallel planes, and the roller 15 is disposed between the forks.
The device of the utility model is driven by the input shaft 13, converts the continuous rotary motion of the input shaft 13 into the reciprocating linear motion of the nut body 16, and drives the shifting fork by the roller 15 on the nut body 16 to realize the reciprocating swing of the output shaft 2. During operation, the nut body 16 moves linearly along the output shaft 2 and the stop chute 17 together with the rollers 15 and guide wheels thereon.
The outer surface of the output shaft 2 is provided with an inner axial key groove, the inner surface of the shifting fork cylinder 4 is provided with a corresponding outer axial key groove, and keys 5 are arranged in the inner axial key groove and the outer axial key groove to transmit torque between the two parts. The lower part of the shifting fork cylinder 4 is provided with a bulge which is symmetrical to the central line to form a shifting fork. When the device works, the input shaft 13 is driven by external power to rotate, the crescent pin 24 is driven by the spiral groove 10, the nut body 16 makes reciprocating rectilinear motion along the axis of the stop chute 17, the roller 15 arranged on the nut body 16 drives the shifting fork cylinder 4 to move through the shifting fork, and finally the output shaft 2 is driven to output reciprocating motion through the key 5. Since the input shaft 13 needs to be rotated a plurality of turns corresponding to one back and forth movement of the nut body 16, the effects of decelerating and increasing the output torque are achieved.
The input shaft 13 is provided with two spiral grooves 10 with opposite rotation directions, the tooth shapes and the screw pitches of the two spiral grooves 10 are the same, the spiral angles are the same, and the rotation directions are opposite. When the input shaft 13 rotates, the screw grooves 10 on the input shaft and the crescent pins 24 cooperate to drive the nut body 16 to do linear motion, and when the crescent teeth 24-2 move to the end parts of the screw grooves 10, the screw grooves 10 enter the other screw groove 10, and the screw body 16 is driven to move reversely due to the opposite rotation directions of the two screw grooves 10 on the input shaft 13, and in the process, the crescent pins 24 also rotate around the axis by an angle. The roller 15 and the crescent pin 24 only rotate, and the roller 15 drives the shifting fork to rotate along with the linear movement of the nut body 16. The stop chute 17 limits the rotation of the nut body 16 about the axis of the input shaft 13 during the reciprocating movement to only a linear movement.
The threads of the spiral groove 10 may be rectangular threads, for example, rectangular threads with a width of 6 mm and a depth of 5 mm, so that the processing is convenient, trapezoidal or triangular threads may be used, and two spiral grooves 10 are communicated at two ends through a transition groove 11 in the circumferential direction.
In the present utility model, when the number of turns of the spiral groove 10 on the input shaft 13 is set to m and the rotation speed of the input shaft 13 is set to n revolutions per minute, the wobble frequency of the output shaft 2 is:
if the number of turns of the spiral groove 10 is 3 when the rotation speed of the input shaft 13 is 1500 rpm, the wobble frequency of the output shaft 2 is 250 times. In addition, the number of turns m of the spiral groove 10 is not an integer, so that the input-output speed ratio can be conveniently adjusted.
Taking the number of turns of the spiral groove 10 on the input shaft 13 as 3 as an example, the nut body 16 is driven by the crescent pin 24 to complete a reciprocating motion along the axis of the stop chute 17, the input shaft 13 needs to rotate for 6 turns, meanwhile, the roller 15 drives the shifting fork cylinder 4 to complete a back and forth swinging motion through the shifting fork, and the effects of reducing speed and increasing torque are achieved.
The output shaft 2 at the two ends of the shifting fork cylinder 4 is externally provided with an output shaft bearing 6, the left side of the output shaft bearing 6 and the box 3 is provided with a left end cover 1, the right side of the output shaft bearing 6 and the box 3 is provided with a right end cover 7, and large sealing rings 25 are respectively arranged between the left end cover 1 and the output shaft 2 and between the right end cover 7 and the output shaft 2. An input shaft bearing 9 is arranged between the two ends of the input shaft 13 and the box body 3, a front end cover 12 and a rear end cover 8 are respectively arranged on the outer side of the input shaft bearing 9, and a small sealing ring 26 is arranged between the front end cover 12 and the input shaft 13. Further, because the friction surfaces among moving parts and parts in the device and the inside of the bearing are required to be lubricated, the box body 3 is of a closed structure, a certain amount of lubricating oil is added into the box body 3, the front end cover 12, the rear end cover 8, the left end cover 1 and the left end cover 1 are all fixed on the box body 3 through bolts, the sealing glue is coated on the combined surfaces during installation, dynamic sealing is realized at a plurality of extending positions of the shaft through the large sealing ring 25 and the small sealing ring 26, the leakage of the lubricating oil is avoided, and the sealing ring uses a lip-shaped framework oil seal.
More specifically, the output shaft 2 is located above the nut body 16, supported in the bearing hole of the case 3 by two output shaft bearings 6, and the end of the output shaft 2 is coupled to an external part by a flange, and when the diameter of the output shaft 2 is large, a hollow structure may be made to reduce the weight. The shifting fork cylinder 4 is cylindrical, is sleeved outside the output shaft 2 and is positioned between the two output shaft bearings 6, and the length of the shifting fork cylinder 4 is equal to the distance between the inner sides of the two output shaft bearings 6, so that the shifting fork cylinder can play a role of a positioning sleeve.
The guide wheel comprises a guide wheel shaft 19 and a guide wheel bearing 20, wherein the guide wheel shaft 19 can be fixed in a welding mode to prevent the guide wheel shaft 19 from being separated in the working process, the guide wheel bearing 20 is arranged outside the guide wheel shaft 19, the guide wheel bearing 20 is arranged in a stop chute 17, the type of the guide wheel bearing 20 can optionally support a roller shaft 14, the guide wheel bearing 20 is arranged at the lower end of the guide wheel shaft 19 and is positioned through a circlip 23 for a shaft, the outer diameter of the guide wheel bearing 20 is the same as the width of the stop chute 17, and the guide wheel bearing 20 slides back and forth in the stop chute 17 in the working process, so that the rotary motion of a nut body 16 around the axis of the input shaft 13 is limited.
The roller groove 31 is perpendicular to the axis of the crescent pin 24, the roller shaft 14 is fixed in the middle of the roller 15, and the roller shaft 14 is arranged on the nut bodies 16 at two sides of the roller groove 31. Further, the outer diameter of the roller 15 is equal to the distance between the two forks.
The lunar tooth 24-2 comprises a tooth top 24-2-1 and a tooth root 24-2-2, the arc surfaces of the tooth top 24-2-1 and the tooth root 24-2-2 are not coincident and are perpendicular to the axis of the shaft neck 24-1, in order to eliminate the influence of the spiral angle, the cooperation of the lunar tooth 24-2 and the spiral groove 10 on the input shaft 13 is ensured, the radius of the arc surface of the tooth top 24-2-1 is larger than the outer diameter of the groove bottom of the spiral groove 10, the lamination of the tooth top 24-2-1 and the groove bottom plane of the spiral groove 10 is ensured, in addition, the circle centers of the arc surfaces of the tooth root 24-2-2 and the tooth top 24-2-1 are not coincident, and the radius of the arc surface of the tooth root 24-2-2 is smaller than the radius of the arc surface of the tooth top 24-2-1 plus the tooth height, so that the two ends of the tooth root 24-2-2 are lifted, and the outer surface of the input shaft 13 is pressed in operation. The tooth height is the height of the tooth, i.e., the axial distance between the tip 24-2-1 and the root 24-2-2. Referring to FIG. 6, wherein the center dashed line is the axis of journal 24-1, O1 is the axis of root 24-2-2, O2 is the axis of tip 24-2-1, P1 is the radius of root 24-2-2, P2 is the radius of tip 24-2-1, and H is the tooth height, it is desirable to have P1< P2+H according to the above description so that crescent tooth 24-2 can be better matched for use in arcuate helical groove 10 and transition groove 11.
A bottom plate 18 is fixed on the box body 3 at the outermost side of the accommodating space, a stop chute 17 is arranged on the bottom plate 18, the axis of the stop chute 17 is parallel to the input shaft 13, and the nut body 16 is rectangular. The bottom plate 18 is provided with a threaded hole, a rectangular through hole 27 is formed in the corresponding position of the bottom of the box body 3, the bottom plate 18 is fixed through bolts, spring washers and plain washers, and the stop chute 17 can be fixed by screwing bolts from the inside of the box body 3, so that the sealing of the box body 3 is easy to ensure, but the installation is inconvenient.
In order to make the device compact in structure, avoid the motion interference between nut body 16 and shift fork section of thick bamboo 4 when working simultaneously, open and have a rectangle through-hole 27 on shift fork section of thick bamboo 4 between the shift fork, the inside and outside cylinder surface of UNICOM, the square through-hole 27 of operating duration can provide the motion space for nut body 16, guarantees the motion clearance between the part.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (9)
1. The mechanical speed reducer capable of outputting reciprocating swing is characterized by comprising a box body, an input shaft, an output shaft and a shifting fork cylinder; the shifting fork cylinder is positioned in the box body, and the output shaft is positioned in the shifting fork cylinder; one side of the box body is provided with an accommodating space, a nut body is arranged in the accommodating space, a transmission hole perpendicular to the output shaft is formed in the middle of the nut body, and the input shaft is arranged in the transmission hole; the input shaft is provided with two spiral grooves with opposite rotation directions, and the ends of the two spiral grooves are communicated through a transition groove along the circumferential direction of the input shaft; the nut body is internally provided with a rotating hole communicated with the transmission hole, a crescent pin is arranged in the rotating hole and comprises a cylindrical shaft neck and crescent teeth connected to the shaft neck, the shaft neck is rotatably arranged in the rotating hole, the axis of the crescent pin is parallel to the output shaft, and the crescent teeth are arranged in the spiral groove; the box body at the outermost side of the accommodating space is provided with a stop chute parallel to the input shaft, the outermost side of the nut body is provided with a guide wheel, and the guide wheel can move along the stop chute; the nut body is provided with a roller groove, a roller is arranged in the roller groove, and the axis of the roller is parallel to the axis of the output shaft; one side of the shifting fork cylinder is connected with two shifting forks, the inner surfaces of the shifting forks are two parallel planes, and the idler wheels are arranged between the shifting forks.
2. The mechanical speed reducer of the output reciprocating swing according to claim 1, wherein output shaft bearings are arranged outside the output shafts at two ends of the shifting fork cylinder, a left end cover is arranged on the left side of the output shaft bearings and the box body, a right end cover is arranged on the right side of the output shaft bearings and the box body, and sealing rings are respectively arranged between the left end cover and the output shaft and between the right end cover and the output shaft; an input shaft bearing is arranged between the two ends of the input shaft and the box body, a front end cover and a rear end cover are respectively arranged on the outer side of the input shaft bearing, and a sealing ring is arranged between the front end cover and the input shaft.
3. The mechanical reduction device for outputting a reciprocating oscillation as defined in claim 1, wherein the guide wheel includes a guide wheel shaft and a guide wheel bearing, the guide wheel bearing being mounted outside the guide wheel shaft, the guide wheel bearing being mounted within and slidable along the stop chute.
4. The mechanical reduction gear for outputting reciprocating oscillations according to claim 1, characterized in that said roller grooves are perpendicular to said crescent pin axis, a roller shaft is fixed in the middle of said roller, said roller shaft being provided on said nut body on both sides of said roller grooves.
5. The mechanical reduction gear of claim 1, wherein the crescent tooth includes a tooth top and a tooth root, both of which are arc surfaces, the axis of the arc surface of the tooth top is not coincident with the axis of the arc surface of the tooth root and intersects the axis of the journal, the radius of the arc surface of the tooth top is greater than the groove bottom outer diameter of the spiral groove, and the radius of the arc surface of the tooth root is less than the radius of the arc surface of the tooth top plus the tooth height.
6. The mechanical reduction gear of claim 1, wherein the outer surface of the output shaft is provided with an inner axial keyway, the inner surface of the shift fork barrel is provided with a corresponding outer axial keyway, and keys are inserted into the inner axial keyway and the outer axial keyway.
7. The mechanical reduction device for outputting reciprocating oscillations according to claim 1, characterized in that the outer diameter of said roller is equal to the distance between two said forks.
8. The mechanical reduction device for outputting reciprocating oscillations according to claim 1, characterized in that said rotating bore is internally provided with a double row bearing, said journal being mounted in the internal bore of said double row bearing.
9. The mechanical reduction gear for outputting reciprocating oscillations according to claim 1, characterized in that a rectangular through hole is opened on said fork cylinder between said forks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010614467.0A CN111779812B (en) | 2020-06-30 | 2020-06-30 | Mechanical speed reducer capable of outputting reciprocating swing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010614467.0A CN111779812B (en) | 2020-06-30 | 2020-06-30 | Mechanical speed reducer capable of outputting reciprocating swing |
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| Publication Number | Publication Date |
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| CN111779812A CN111779812A (en) | 2020-10-16 |
| CN111779812B true CN111779812B (en) | 2023-05-16 |
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| CN202010614467.0A Active CN111779812B (en) | 2020-06-30 | 2020-06-30 | Mechanical speed reducer capable of outputting reciprocating swing |
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| CN113915306A (en) * | 2021-04-29 | 2022-01-11 | 浙江万安泵业有限公司 | Recirculating ball nut and electric recirculating ball steering device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4031765A (en) * | 1975-03-31 | 1977-06-28 | Norco, Inc. | Reversing nut for diamond thread screw |
| US4774822A (en) * | 1986-04-04 | 1988-10-04 | Whirlpool Corporation | Compact transmission for automatic washer |
| CN101019735B (en) * | 2006-02-16 | 2011-08-17 | 王卫 | Integral intelligent rope-drawn multipurpose curtain machine |
| CN102102747A (en) * | 2009-11-12 | 2011-06-22 | 蔡力兵 | Latest technology for mutual conversion of reciprocating linear motoricity and continuous rotating force |
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2020
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Effective date of registration: 20240617 Address after: No. 1188 Fengyao Road, Qingcun Town, Fengxian District, Shanghai, 2014 Patentee after: SHANGHAI HANGLING AVIATION TECHNOLOGY DEVELOPMENT Co.,Ltd. Country or region after: China Address before: 201407 Qianqiao Park, Qingcun Town, Fengxian District, Shanghai Patentee before: SHANGHAI YUANLING MACHINERY INDUSTRY CO.,LTD. Country or region before: China |