CN108547916B - Gear transmission mechanism capable of preventing gear from being driven - Google Patents
Gear transmission mechanism capable of preventing gear from being driven Download PDFInfo
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- CN108547916B CN108547916B CN201810431604.XA CN201810431604A CN108547916B CN 108547916 B CN108547916 B CN 108547916B CN 201810431604 A CN201810431604 A CN 201810431604A CN 108547916 B CN108547916 B CN 108547916B
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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
- F16H1/06—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with parallel axes
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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
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/17—Toothed wheels
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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
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- General Engineering & Computer Science (AREA)
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Abstract
The invention belongs to the technical field of gear transmission, and particularly relates to a gear transmission mechanism for preventing gear from being knocked, which comprises a driven shaft, a driven gear, a driving shaft, a driving gear, a shaft sleeve, a driving mechanism and the like, wherein after the driving mechanism is in contact fit with the driven gear, the rotating speed of the driven gear is close to that of the driving gear, so that the rigid collision generated when the driving gear is meshed with the driven gear is weakened; in addition, when slight rigid collision occurs in the process of meshing the driving teeth and the driven teeth, the spiral spring can play a certain effect of buffering the rigid collision; due to the design, the gear beating phenomenon caused by rigid collision when the gears are meshed is avoided, and the service life of the gears is prolonged; the invention has simple structure and better use effect.
Description
Technical Field
The invention belongs to the technical field of gear transmission, and particularly relates to an anti-tooth-beating gear transmission mechanism.
Background
At present, the traditional gear transmission is generally divided into sliding meshed gear transmission and non-sliding meshed gear transmission; in the transmission process of the non-sliding meshing gear, when the driving gear needs to slide to the position of the driven gear, the tooth of the driving gear is meshed with the tooth of the driven gear, so that the driving gear drives the driven gear to rotate; however, in the process that the driving gear is just meshed with the driven gear, because the driven gear does not rotate or the rotation of the driven gear is not synchronous with the rotation of the driving gear, the phenomenon of gear beating can occur; when the teeth are hit seriously, the teeth are easily damaged, and the meshing transmission between the driving gear and the driven gear is further influenced; in order to avoid the gear-beating phenomenon, a gear transmission mechanism for preventing the gear-beating is required to be designed.
The invention designs a gear transmission mechanism for preventing gear from being knocked.
Disclosure of Invention
In order to solve the defects in the prior art, the invention discloses an anti-gear-beating gear transmission mechanism which is realized by adopting the following technical scheme.
The utility model provides a prevent gear drive who beats tooth which characterized in that: the device comprises a driven shaft, a driven gear, a driving shaft, a driving gear, a shaft sleeve, a driving mechanism, a volute spring, a limiting plate, a shifting plate, a transition circular surface, a sliding-in sharp corner, a shaft hole, a shifting cavity and a volute spring cavity, wherein the driven gear is arranged on the outer circular surface of the driven shaft; the outer circular surface of the driven gear is provided with driven teeth; the outer circle surface of the driving shaft is nested with a driving gear; the outer circular surface of the driving gear is provided with driving teeth; the driving gear is provided with a shaft hole; the inner circular surface of the shaft hole is provided with a toggle cavity and a volute spiral spring cavity; the toggle cavity and the scroll spring cavity are both positioned in the driving gear and are communicated with each other; one end of the scroll spring is arranged on the outer circular surface of the driving shaft, and the other end of the scroll spring is arranged on the inner circular surface of the scroll spring cavity; the scroll spring is positioned in the scroll spring cavity; two limiting plates are arranged on the inner circular surface of the poking cavity and are opposite to each other; the shifting plate is arranged on the outer circular surface of the driving shaft; the shifting plate is positioned in the shifting cavity and matched with the limiting plate; the two shaft sleeves are arranged on the driving shaft and are respectively positioned at two sides of the driving gear; a plurality of driving mechanisms are uniformly arranged on the outer circular surface of each shaft sleeve along the circumferential direction; and a gap is reserved between two adjacent driving mechanisms on the same shaft sleeve.
The driving tooth and the driven tooth have the same structure; for the driving tooth, two ends of the driving tooth are provided with sliding-in sharp corners, and the surface of the driving tooth, which is not connected with the outer circular surface of the driving gear, is a transition circular surface.
The driven teeth are respectively matched with the driving mechanism and the driving teeth.
The driving mechanism comprises a telescopic rod, a spring, an arc-shaped plate and a round corner, wherein one end of the telescopic rod is arranged on the outer circular surface of the shaft sleeve, and the other end of the telescopic rod is provided with the arc-shaped plate; the outer arc surface of the arc plate is provided with a round angle; the spring is nested on the telescopic rod, one end of the spring is installed on the outer circular surface of the shaft sleeve, and the other end of the spring is installed on the inner arc surface of the arc-shaped plate.
The fillet on the above-mentioned arc matches with the driven tooth.
And a gap is formed between the arc-shaped plates of the two adjacent driving mechanisms on the same shaft sleeve.
A gap is arranged between the arc-shaped plate and the driving gear.
As a further improvement of the technology, one end of the driving shaft is connected with a power unit.
As a further improvement of the technology, one end of the driven shaft is connected with the execution unit, and the other end of the driven shaft is connected with the pulling mechanism.
As a further improvement of the technology, when the telescopic rod is not compressed, the distance from the outer arc surface of the arc plate to the axis of the driving shaft is equal to the distance from the transition circular surface of the driving tooth to the axis of the driving shaft.
As a further improvement of the technology, when the driving shaft does not start to rotate, the shifting plate is positioned in the middle of the two limiting plates.
As a further improvement of the technology, when the telescopic rod is compressed to the limit position, gaps are reserved between the arc plates in two adjacent driving mechanisms on the same shaft sleeve.
According to the invention, the driven gear is arranged on the driven shaft, so that the driven gear can drive the driven shaft to rotate; one end of the driven shaft is connected with the execution unit, the other end of the driven shaft is connected with the pulling mechanism, so that the execution unit using the mechanism can work due to the rotation of the driven shaft, and the pulling mechanism has the following functions: the pulling mechanism is used for pulling the driven shaft, so that the driven gear slides towards the driving gear, and the driven gear is matched with the driving mechanism and meshed with the driving gear.
The driving gear nestification is on the driving shaft, dials the board and installs on the driving shaft, dials board and limiting plate cooperation and acts on and is: after the driving shaft rotation makes to dial the board and contact the cooperation with the limiting plate, dials the board and can stir the limiting plate to make the driving shaft can drive the driving gear rotation through dialling board and limiting plate, and owing to dial the contact cooperation of board and limiting plate, volute spiral spring is compressed so, and volute spiral spring also can make to dial the board and remove the reset. For the volute spiral spring, the volute spiral spring has the other effect that when the driving tooth cannot just enter a gap between two adjacent driven teeth in the process that the driven teeth are meshed with the driving tooth, the sliding-in sharp-angled surface on the driven teeth is in contact fit with the sliding-in sharp-angled surface of the driving tooth, and in the process that the driving gear continuously enters the gap between the two driven teeth, the sliding-in sharp-angled surface on the driven teeth extrudes the sliding-in sharp-angled surface on the driving tooth, so that the driving tooth can slightly swing along the extrusion direction, further the driving gear can slightly swing, and the volute spiral spring can play a role in buffering swing at the moment.
The shaft sleeve is installed on the driving shaft, and the driving mechanism is installed on the shaft sleeve, so that the driving shaft can drive the driving mechanism to rotate through the shaft sleeve.
To actuating mechanism, the one end of telescopic link is installed on the axle sleeve, and the arc is installed to the other end, and the one end of spring is installed on the axle sleeve, and the other end is installed on the arc, so the arc can be under the effect of telescopic link and spring for the arc moves along the axis of telescopic link and resets.
The fillet on the arc-shaped plate is matched with the driven teeth, so that when the driven teeth move towards the driving gear, the driven teeth can be in extrusion fit with the fillet on the arc-shaped plate; in the process that the driven teeth extrude the round corners on the arc-shaped plates, the arc-shaped plates move towards the direction of the shaft sleeve; in addition, the rotation of the arc-shaped plate can enable the driven gear to rotate through the friction between the round angle on the arc-shaped plate and the driven gear, and then the driven gear can be driven to rotate by the driven gear.
The design of the transition round surface and the sliding-in sharp corner on the driven tooth and the design of the transition round surface and the sliding-in sharp corner on the driving tooth are to facilitate the meshing of the driven tooth and the driving tooth.
The gap is reserved between the arc-shaped plate and the driving gear, friction fit between the rotating arc-shaped plate and the driving gear is avoided due to the design, and finally the rotating arc-shaped plate cannot influence rotation of the driving gear.
Gaps are formed between the arc-shaped plates in the two adjacent driving mechanisms on the same shaft sleeve, so that the movement of the two arc-shaped plates cannot influence each other in the process that the two adjacent arc-shaped plates move along the axial direction of the telescopic rod; the other function is that because a gap exists between two adjacent arc-shaped plates, when the rotating arc-shaped plates drive the driven teeth to rotate through friction force, the driven teeth can generate the pulsation phenomenon of the friction force when passing through the gap; when the driven teeth pass through the middle position of the gap, the friction force is minimum, and when the friction force is minimum, the driven teeth are more easily matched with the driving teeth; the design of the gap may also reduce frictional damage.
When the telescopic link is compressed to the extreme position, have the clearance between the arc that is arranged in two adjacent actuating mechanism on same axle sleeve, when two adjacent arcs under this state reset then, two adjacent arcs can not produce the friction spacing, are convenient for reset of arc.
When the driving shaft does not start to rotate, the shifting plate is positioned in the middle of the two limiting plates; when the telescopic rod is not compressed, the distance from the outer arc surface of the arc plate to the axis of the driving shaft is equal to the distance from the transition circular surface of the driving tooth to the axis of the driving shaft.
When the driving shaft is driven by the power unit to start rotating, the shaft sleeve rotates along with the driving shaft, and the driving mechanism rotates along with the shaft sleeve; when the driving shaft starts to rotate, the driving gear does not rotate along with the driving shaft, so that the volute spiral spring is slightly compressed, the driving shaft drives the driving gear to rotate through the volute spiral spring, and the shifting plate is positioned between the two limiting plates but is not in contact fit with the limiting plates when the driving shaft and the driving gear synchronously rotate; rotation of the drive shaft may synchronize the rotational speeds of the drive mechanism and the drive gear.
When the pulling mechanism pulls the driven shaft to enable the driven gear to be meshed with the driving gear, the driven gear is firstly contacted and matched with the driving mechanism; in the contact fit of the driven gear and the driving mechanism: the driven teeth can be in extrusion fit with the round corners on the arc-shaped plates, the extruded arc-shaped plates move towards the direction of the shaft sleeve, the telescopic rods and the springs are compressed, and in addition, the rotation of the arc-shaped plates can enable the driven teeth to rotate through the friction between the round corners on the arc-shaped plates and the driven teeth, so that the driven teeth can drive the driven gear to rotate; in this process, since the driving mechanism rotates the driven gear by friction rather than directly engaging with the driven teeth to rotate the driven gear, the rotation speed of the driven gear is not equal to that of the driving gear, but is close to that of the driving gear, which facilitates the engagement between the driving gear and the driven gear.
After one end of the driven tooth slides into the sharp corner and is in friction fit with the arc-shaped plate, the driven tooth starts to be in meshing fit with the driving tooth: when one end of the driven tooth slides into the sharp corner and just enters the gap between two adjacent driven teeth, the driven tooth is just meshed with the driving tooth, so that the driving tooth can drive the driven teeth to rotate, and finally the driving gear drives the driven gear to rotate; when one end of the driving tooth slides into the sharp corner and cannot enter the gap between two adjacent driven teeth, the sliding-in sharp corner inclined plane on the driven tooth is in contact fit with the sliding-in sharp corner inclined plane of the driving tooth, and in the process that the driving tooth continuously enters the gap between two driven teeth, as the sliding-in sharp corner on the driven tooth extrudes the sliding-in sharp corner on the driving tooth, the driving tooth slightly swings along the extrusion direction, and further the driving tooth slightly swings; the two limiting plates slightly swing along with the driving gear, under the slight swing, one of the limiting plates can be in contact fit with the shifting plate, and the driving shaft is shifted by the scroll spring, the shifting plate and the limiting plates to enable the driving gear to rotate; after slight swinging, the driving teeth can be completely meshed with the driven teeth, the driving teeth can drive the driven teeth to rotate, and finally the driving gear drives the driven gear to rotate; the design can avoid the tooth hitting phenomenon in the process of rigid collision and meshing of the driving tooth and the driven tooth, protect the integrity of the driving tooth and the driven tooth, and greatly prolong the service life of the driving gear and the driven gear.
In addition, in the process of torque output of the driving shaft, the compression amount of the scroll spring can change along with the change of the torque output of the driving shaft, so that the scroll spring can drive the driving gear to rotate all the time.
After the driven tooth is completely meshed with the driving tooth, the arc-shaped plate is not extruded by the driven tooth any more, and then the arc-shaped plate can be restored to the original position under the reset action of the telescopic rod and the spring.
Compared with the traditional gear transmission technology, after the driving mechanism is in contact fit with the driven gear, the rotating speed of the driven gear is close to that of the driving gear, so that the rigid collision generated when the driving gear is meshed with the driven gear is weakened; in addition, when slight rigid collision occurs in the process of meshing the driving teeth and the driven teeth, the spiral spring can play a certain effect of buffering the rigid collision; due to the design, the gear beating phenomenon caused by rigid collision when the gears are meshed is avoided, and the service life of the gears is prolonged; the invention has simple structure and better use effect.
Drawings
Fig. 1 is a schematic view of the entire components.
Fig. 2 is a schematic front view of the integral parts.
FIG. 3 is a perspective schematic view of a drive gear.
FIG. 4 is a schematic sectional elevation view of a drive gear.
FIG. 5 is a schematic view of a drive tooth configuration.
FIG. 6 is a sectional view of a driving gear structure.
Fig. 7 is a schematic view of the installation of the stopper plate.
FIG. 8 is a schematic view of a scroll spring installation.
Fig. 9 is a schematic view of the drive mechanism.
Number designation in the figures: 1. a driven shaft; 2. a driven gear; 3. a driven tooth; 4. a drive shaft; 5. a driving tooth; 6. a driving gear; 7. a shaft sleeve; 8. a drive mechanism; 9. a volute spiral spring; 10. a limiting plate; 12. dialing a plate; 13. a transition round surface; 14. sliding into the sharp corner; 15. a shaft hole; 16. a stir chamber; 17. a volute spiral spring chamber; 18. a telescopic rod; 19. a spring; 20. an arc-shaped plate; 21. and (4) rounding.
Detailed Description
As shown in fig. 1 and 2, the device comprises a driven shaft 1, a driven gear 2, a driven tooth 3, a driving shaft 4, a driving tooth 5, a driving gear 6, a shaft sleeve 7, a driving mechanism 8, a volute spring 9, a limit plate 10, a shifting plate 12, a transition round surface 13, a sliding sharp corner 14, a shaft hole 15, a shifting cavity 16 and a volute spring cavity 17, wherein the driven gear 2 is installed on the outer circular surface of the driven shaft 1 as shown in fig. 1; the outer circular surface of the driven gear 2 is provided with driven teeth 3; as shown in fig. 3, a driving gear 6 is nested on the outer circular surface of the driving shaft 4; the outer circle surface of the driving gear 6 is provided with a driving tooth 5; as shown in fig. 6 and 7, the driving gear 6 is provided with a shaft hole 15; the inner circle surface of the shaft hole 15 is provided with a toggle cavity 16 and a volute spiral spring cavity 17; the toggle cavity 16 and the scroll spring cavity 17 are both positioned in the driving gear 6, and the toggle cavity 16 is communicated with the scroll spring cavity 17; as shown in fig. 4 and 8, one end of the spiral spring 9 is mounted on the outer circumferential surface of the driving shaft 4, and the other end is mounted on the inner circumferential surface of the spiral spring chamber 17; scroll spring 9 is located in scroll spring chamber 17; as shown in fig. 4 and 7, two limit plates 10 are mounted on the inner circumferential surface of the toggle cavity 16, and the two limit plates 10 are opposite; as shown in fig. 4 and 8, the shifting plate 12 is arranged on the outer circular surface of the driving shaft 4; the shifting plate 12 is positioned in the shifting cavity 16, and the shifting plate 12 is matched with the limiting plate 10; as shown in fig. 1, two bushings 7 are installed on the driving shaft 4, and the two bushings 7 are respectively located at two sides of the driving gear 6; as shown in fig. 9, a plurality of driving mechanisms 8 are uniformly installed on the outer circumferential surface of each boss 7 in the circumferential direction; and a gap is reserved between two adjacent driving mechanisms 8 on the same shaft sleeve 7.
The driving teeth 5 and the driven teeth 3 have the same structure; as shown in fig. 5, for the driving tooth 5, two ends of the driving tooth 5 have slide-in sharp corners 14, and the surface of the driving tooth 5 not connected with the outer circular surface of the driving gear 6 is a transition circular surface 13.
The driven teeth 3 are respectively matched with the driving mechanism 8 and the driving teeth 5.
As shown in fig. 9, the driving mechanism 8 comprises a telescopic rod 18, a spring 19, an arc-shaped plate 20 and a round corner 21, as shown in fig. 9, wherein one end of the telescopic rod 18 is mounted on the outer circular surface of the shaft sleeve 7, and the other end is mounted with the arc-shaped plate 20; the outer arc surface of the arc plate 20 is provided with a round angle 21; the spring 19 is nested on the telescopic rod 18, one end of the spring 19 is arranged on the outer circular surface of the shaft sleeve 7, and the other end of the spring 19 is arranged on the inner arc surface of the arc-shaped plate 20.
The round corners 21 on the arc-shaped plates 20 are matched with the driven teeth 3.
As shown in fig. 1, the arc plates 20 located in two adjacent driving mechanisms 8 on the same shaft sleeve 7 have a gap therebetween.
As shown in fig. 2, the arc plate 20 and the driving gear 6 have a gap therebetween.
As a further improvement of the present technique, one end of the above-mentioned drive shaft 4 is connected to a power unit.
As a further improvement of the present technology, the driven shaft 1 is connected to an actuator at one end and to a pulling mechanism at the other end.
As a further improvement of the technology, when the telescopic rod 18 is not compressed, the distance from the outer arc surface of the arc plate 20 to the axis of the driving shaft 4 is equal to the distance from the transition circular surface 13 of the driving tooth 5 to the axis of the driving shaft 4.
As a further improvement of the present technique, when the driving shaft 4 is not started to rotate, the dial plate 12 is located at the intermediate position of the two limit plates 10.
As a further improvement of the present technique, when the telescopic rod 18 is compressed to the extreme position, there is a gap between the arc plates 20 located in two adjacent driving mechanisms 8 on the same bushing 7.
According to the invention, the driven gear 2 is arranged on the driven shaft 1, so that the driven gear 3 can drive the driven shaft 1 to rotate; one end of the driven shaft 1 is connected with the execution unit, and the other end is connected with the pulling mechanism, so that the rotation of the driven shaft 1 can enable the execution unit using the mechanism to work, and the pulling mechanism has the following functions: the pulling mechanism pulls the driven shaft 1, so that the driven gear 2 slides towards the driving gear 6, and the driven gear 2 is matched with the driving mechanism 8 and meshed with the driving gear 6.
The driving gear 6 is nested on the driving shaft 4, dials board 12 and installs on driving shaft 4, dials board 12 and limiting plate 10 combined action and is: after the driving shaft 4 is rotatory to make and dial board 12 and limiting plate 10 to contact the cooperation, dial board 12 and can stir limiting plate 10 to make driving shaft 4 can drive driving gear 6 rotatory through dialling board 12 and limiting plate 10, and owing to dial the contact cooperation of board 12 with limiting plate 10, volute spiral spring 9 is compressed so, and volute spiral spring 9 also can make and dial board 12 and remove and reset. For the volute spiral spring 9, the other function is that when the driving tooth 5 cannot just enter the gap between two adjacent driven teeth 3 in the process that the driven teeth 3 are meshed with the driving tooth 5, the inclined plane of the slide-in sharp corner 14 on the driven teeth 3 is in contact fit with the inclined plane of the slide-in sharp corner 14 of the driving tooth 5, and in the process that the driving gear 6 continues to enter the gap between two driven teeth 3, because the inclined plane of the slide-in sharp corner 14 on the driven teeth 3 extrudes the inclined plane of the slide-in sharp corner 14 on the driving tooth 5, the driving tooth 5 slightly swings along the extrusion direction, and the driving gear 6 slightly swings, at the moment, the volute spiral spring 9 can play a role of buffering swing, and the volute spiral spring 9 can avoid the tooth beating phenomenon in the process that the driving tooth 5 is rigidly collided and meshed with the driven teeth 3.
The shaft sleeve 7 is arranged on the driving shaft 4, the driving mechanism 8 is arranged on the shaft sleeve 7, and then the driving shaft 4 can drive the driving mechanism 8 to rotate through the shaft sleeve 7.
For the driving mechanism 8, one end of the telescopic rod 18 is installed on the shaft sleeve 7, the other end of the telescopic rod is installed with the arc-shaped plate 20, one end of the spring 19 is installed on the shaft sleeve 7, and the other end of the spring 19 is installed on the arc-shaped plate 20, so that the arc-shaped plate 20 can move and reset along the axis of the telescopic rod 18 under the action of the telescopic rod 18 and the spring 19.
The fillet 21 on the arc plate 20 is matched with the driven gear 3, so that when the driven gear 3 moves towards the driving gear 6, the driven gear 3 can be in extrusion fit with the fillet 21 on the arc plate 20; in the process that the driven teeth 3 extrude the round corners 21 on the arc-shaped plates 20, the arc-shaped plates 20 move towards the direction of the shaft sleeve 7; in addition, the rotation of the arc plate 20 can make the driven gear 3 rotate by the friction between the fillet 21 on the arc plate 20 and the driven gear 3, and then the driven gear 3 can drive the driven gear 2 to rotate.
The design of the transition round surface 13 and the slide-in cusp 14 on the driven tooth 3 and the transition round surface 13 and the slide-in cusp 14 on the driving tooth 5 is to facilitate the engagement of the driven tooth 3 with the driving tooth 5.
The gap is reserved between the arc-shaped plate 20 and the driving gear 6, so that the friction fit between the rotating arc-shaped plate 20 and the driving gear 6 is avoided, and finally the rotating arc-shaped plate 20 cannot influence the rotation of the driving gear 6.
Gaps are reserved between the arc-shaped plates 20 in two adjacent driving mechanisms 8 on the same shaft sleeve 7, so that the movement of the two arc-shaped plates 20 cannot influence each other in the process that the two adjacent arc-shaped plates 20 move along the axial direction of the telescopic rod 18; the other function is that because a gap exists between two adjacent arc-shaped plates 20, when the rotating arc-shaped plates 20 drive the driven teeth 3 to rotate through friction force, the driven teeth 3 can generate the pulsation phenomenon of the friction force when passing through the gap; when the driven teeth 3 pass through the middle position of the gap, the friction force is minimum, and when the friction force is minimum, the driven teeth 3 are matched with the driving teeth 5 more easily; the design of the gap may also reduce frictional damage.
When the telescopic rod 18 is compressed to the limit position, a gap is formed between the arc plates 20 in the two adjacent driving mechanisms 8 on the same shaft sleeve 7, so that when the two adjacent arc plates 20 in the state are reset, the two adjacent arc plates 20 cannot generate friction limitation, and the resetting of the arc plates 20 is facilitated.
The specific implementation mode is as follows: when the driving shaft 4 does not start to rotate, the shifting plate 12 is positioned in the middle of the two limiting plates 10; when the telescopic rod 18 is not compressed, the distance from the outer arc surface of the arc plate 20 to the axis of the driving shaft 4 is equal to the distance from the transition circular surface 13 of the driving tooth 5 to the axis of the driving shaft 4.
When the driving shaft 4 is driven by the power unit to start rotating, the shaft sleeve 7 rotates along with the driving shaft 4, and the driving mechanism 8 rotates along with the shaft sleeve 7; when the driving shaft 4 starts to rotate, because the driving gear 6 does not rotate along with the driving shaft 4, the scroll spring 9 is slightly compressed, the driving shaft 4 drives the driving gear 6 to rotate through the scroll spring 9, and at the moment, in the synchronous rotation of the driving shaft 4 and the driving gear 6, the shifting plate 12 is positioned between the two limiting plates 10 but is not in contact fit with the limiting plates 10; rotation of the drive shaft 4 may synchronize the rotational speed of the drive mechanism 8 and the drive gear 6.
When the pulling mechanism pulls the driven shaft 1 to enable the driven gear 2 to be meshed with the driving gear 6, the driven gear 2 is firstly contacted and matched with the driving mechanism 8; in the contact engagement of the driven gear 2 with the drive mechanism 8: the driven teeth 3 can generate extrusion fit with the round corners 21 on the arc-shaped plates 20, the extruded arc-shaped plates 20 move towards the shaft sleeve 7, the telescopic rods 18 and the springs 19 are compressed, in addition, the rotation of the arc-shaped plates 20 can enable the driven teeth 3 to rotate through the friction between the round corners 21 on the arc-shaped plates 20 and the driven teeth 3, and then the driven teeth 3 can drive the driven gear 2 to rotate; in this process, since the driving mechanism 8 rotates the driven gear 2 by friction instead of directly engaging with the driven teeth 3 to rotate the driven gear 2, the rotation speed of the driven gear 2 is not equal to that of the driving gear 6, but the rotation speed of the driven gear 2 is close to that of the driving gear 6, which facilitates the engagement of the driving gear 6 with the driven gear 2.
When one end of the driven tooth 3 slides into the sharp corner 14 and is in friction fit with the arc-shaped plate 20, the driven tooth 3 starts to be in meshing fit with the driving tooth 5: when one end of the driven tooth 3 slides into the sharp corner 14 and just enters the gap between two adjacent driven teeth 3, the driven tooth 3 is just meshed with the driving tooth 5, so that the driving tooth 5 can drive the driven teeth 3 to rotate, and finally the driving gear 6 drives the driven gear 2 to rotate; when one end of the driving tooth 5 slides into the sharp corner 14 and cannot enter the gap between two adjacent driven teeth 3, the inclined surface of the sliding-in sharp corner 14 on the driven tooth 3 is in contact fit with the inclined surface of the sliding-in sharp corner 14 of the driving tooth 5, and in the process that the driving tooth 6 continuously enters the gap between two driven teeth 3, as the sliding-in sharp corner 14 on the driven tooth 3 extrudes the sliding-in sharp corner 14 on the driving tooth 5, the driving tooth 5 slightly swings along the extrusion direction, and further the driving tooth 6 slightly swings; the two limit plates 10 slightly swing along with the driving gear 6, under the slight swing, one of the limit plates 10 is in contact fit with the shifting plate 12, and at the moment, the driving shaft 4 enables the driving gear 6 to rotate through shifting of the spiral spring 9, the shifting plate 12 and the limit plate 10; after slight swinging, the driving tooth 5 can be completely meshed with the driven tooth 3, the driving tooth 5 can drive the driven tooth 3 to rotate, and finally the driving gear 6 drives the driven gear 2 to rotate; due to the design, in the process that the driving teeth 5 and the driven teeth 3 are in rigid collision and meshing, the tooth hitting phenomenon is avoided, the completeness of the driving teeth 5 and the driven teeth 3 is protected, and the service lives of the driving gear 6 and the driven gear 2 are greatly prolonged.
In addition, in the process of torque output of the driving shaft 4, the compression amount of the scroll spring 9 can change along with the change of the torque output of the driving shaft 4, so that the scroll spring 9 can drive the driving gear 6 to rotate all the time.
When the driven tooth 3 is completely meshed with the driving tooth 5, the driven tooth 3 will not press the arc plate 20 any more, and the arc plate 20 can be restored to the original position under the reset action of the telescopic rod 18 and the spring 19.
In conclusion, the invention has the main beneficial effects that: after the driving mechanism 8 is in contact fit with the driven gear 2, the rotating speed of the driven gear 2 is close to that of the driving gear 6, so that rigid collision generated when the driving gear 6 is meshed with the driven gear 2 is weakened; in addition, when slight rigid collision occurs in the process of meshing the driving teeth 5 and the driven teeth 3, the spiral spring 9 can play a certain role in buffering the rigid collision; due to the design, the gear beating phenomenon caused by rigid collision when the gears are meshed is avoided, and the service life of the gears is prolonged; the invention has simple structure and better use effect.
Claims (4)
1. The utility model provides a prevent gear drive who beats tooth which characterized in that: the device comprises a driven shaft, a driven gear, a driving shaft, a driving gear, a shaft sleeve, a driving mechanism, a volute spring, a limiting plate, a shifting plate, a transition circular surface, a sliding-in sharp corner, a shaft hole, a shifting cavity and a volute spring cavity, wherein the driven gear is arranged on the outer circular surface of the driven shaft; the outer circular surface of the driven gear is provided with driven teeth; the outer circle surface of the driving shaft is nested with a driving gear; the outer circular surface of the driving gear is provided with driving teeth; the driving gear is provided with a shaft hole; the inner circular surface of the shaft hole is provided with a toggle cavity and a volute spiral spring cavity; the toggle cavity and the scroll spring cavity are both positioned in the driving gear and are communicated with each other; one end of the scroll spring is arranged on the outer circular surface of the driving shaft, and the other end of the scroll spring is arranged on the inner circular surface of the scroll spring cavity; the scroll spring is positioned in the scroll spring cavity; two limiting plates are arranged on the inner circular surface of the poking cavity and are opposite to each other; the shifting plate is arranged on the outer circular surface of the driving shaft; the poking plate is positioned in the poking cavity; the two shaft sleeves are arranged on the driving shaft and are respectively positioned at two sides of the driving gear; a plurality of driving mechanisms are uniformly arranged on the outer circular surface of each shaft sleeve along the circumferential direction; a gap is formed between two adjacent driving mechanisms on the same shaft sleeve;
the driving tooth and the driven tooth have the same structure; for the driving tooth, two ends of the driving tooth are provided with slide-in sharp corners, and the surface of the driving tooth, which is not connected with the outer circular surface of the driving gear, is a transition circular surface;
the driven teeth are respectively matched with the driving mechanism and the driving teeth;
the driving mechanism comprises a telescopic rod, a spring, an arc-shaped plate and a round corner, wherein one end of the telescopic rod is arranged on the outer circular surface of the shaft sleeve, and the other end of the telescopic rod is provided with the arc-shaped plate; the outer arc surface of the arc plate is provided with a round angle; the spring is nested on the telescopic rod, one end of the spring is arranged on the outer circular surface of the shaft sleeve, and the other end of the spring is arranged on the inner arc surface of the arc-shaped plate;
the fillet on the arc-shaped plate is matched with the driven tooth;
gaps are formed between the arc-shaped plates in the two adjacent driving mechanisms on the same shaft sleeve;
a gap is formed between the arc-shaped plate and the driving gear;
when the driving shaft does not start to rotate, the shifting plate is positioned in the middle of the two limiting plates;
when the telescopic rod is not compressed, the distance from the outer arc surface of the arc plate to the axis of the driving shaft is equal to the distance from the transition circular surface of the driving tooth to the axis of the driving shaft.
2. The gear transmission mechanism of claim 1, wherein: one end of the driving shaft is connected with the power unit.
3. The gear transmission mechanism of claim 1, wherein: one end of the driven shaft is connected with the execution unit, and the other end of the driven shaft is connected with the pulling mechanism.
4. The gear transmission mechanism of claim 1, wherein: when the telescopic rod is compressed to the limit position, a gap is reserved between the arc-shaped plates in the two adjacent driving mechanisms on the same shaft sleeve.
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| CN201810431604.XA CN108547916B (en) | 2018-05-08 | 2018-05-08 | Gear transmission mechanism capable of preventing gear from being driven |
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| CN201810431604.XA CN108547916B (en) | 2018-05-08 | 2018-05-08 | Gear transmission mechanism capable of preventing gear from being driven |
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| CN108547916A CN108547916A (en) | 2018-09-18 |
| CN108547916B true CN108547916B (en) | 2020-09-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109290882A (en) * | 2018-12-07 | 2019-02-01 | 金湖县常盛动力机械配件有限公司 | A kind of burr remover of roller body workpiece |
| CN113145874B (en) * | 2021-05-13 | 2022-11-01 | 扬州鼎准科技有限责任公司 | Self-meshing axial multi-cutter-bar power cutter rest |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62215165A (en) * | 1986-03-14 | 1987-09-21 | Suzuki Motor Co Ltd | Gear with damper spring |
| CN103016647A (en) * | 2011-09-27 | 2013-04-03 | 鸿富锦精密工业（深圳）有限公司 | Gear transmission device |
| CN104204618A (en) * | 2012-03-05 | 2014-12-10 | 卡特彼勒公司 | Scissors gear assembly |
| CN205036823U (en) * | 2015-08-14 | 2016-02-17 | 温岭市五龙机械有限公司 | Car is with type gear that shocks resistance |
| CN205896093U (en) * | 2016-07-25 | 2017-01-18 | 上海汽车变速器有限公司 | Direct screening formula crashproof derailleur profile modified gear and gear shift operating mechanism thereof |
| JP2018062941A (en) * | 2016-10-11 | 2018-04-19 | 株式会社椿本チエイン | Cushion type sprocket |
-
2018
- 2018-05-08 CN CN201810431604.XA patent/CN108547916B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62215165A (en) * | 1986-03-14 | 1987-09-21 | Suzuki Motor Co Ltd | Gear with damper spring |
| CN103016647A (en) * | 2011-09-27 | 2013-04-03 | 鸿富锦精密工业（深圳）有限公司 | Gear transmission device |
| CN104204618A (en) * | 2012-03-05 | 2014-12-10 | 卡特彼勒公司 | Scissors gear assembly |
| CN205036823U (en) * | 2015-08-14 | 2016-02-17 | 温岭市五龙机械有限公司 | Car is with type gear that shocks resistance |
| CN205896093U (en) * | 2016-07-25 | 2017-01-18 | 上海汽车变速器有限公司 | Direct screening formula crashproof derailleur profile modified gear and gear shift operating mechanism thereof |
| JP2018062941A (en) * | 2016-10-11 | 2018-04-19 | 株式会社椿本チエイン | Cushion type sprocket |
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| CN108547916A (en) | 2018-09-18 |
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