CN212131207U - Double-ratchet power linkage mechanism - Google Patents
Double-ratchet power linkage mechanism Download PDFInfo
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- CN212131207U CN212131207U CN202020915593.5U CN202020915593U CN212131207U CN 212131207 U CN212131207 U CN 212131207U CN 202020915593 U CN202020915593 U CN 202020915593U CN 212131207 U CN212131207 U CN 212131207U
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- wheel
- ratchet
- pawl
- power
- periphery
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Abstract
A double-ratchet power linkage mechanism belongs to the field of mechanical transmission and comprises an inner wheel and an outer wheel, wherein the inner wheel is a driving wheel, the outer wheel is arranged on the periphery of the inner wheel and is a driven wheel, a gap is formed between the inner wheel and the outer wheel, an inner pawl is rotationally arranged on the periphery of the inner wheel, an outer pawl is rotationally arranged on the periphery of the outer wheel, an inner ratchet wheel and an outer ratchet wheel are respectively arranged on the periphery of the inner wheel and the inner periphery of the outer wheel, ratchets on the outer ratchet wheel and the inner ratchet wheel are respectively matched with the end part of the inner pawl and the end part of the outer pawl, springs are respectively arranged on the outer ratchet wheel and the inner pawl, a power output shaft is connected onto the, at least one pawl will interior wheel and foreign steamer interlock, the utility model discloses can simplify mechanical structure, switching when reducing the change speed reduces operating procedure, and the mechanical system's when realizing the change speed natural transition need not to change high-speed or low-speed interlock state through the operation.
Description
Technical Field
The utility model relates to a power interlock mechanism, in particular to two ratchet power interlock mechanisms belongs to the mechanical transmission field.
Background
Under normal conditions, the vehicles are high in forward speed and low in reverse speed; the hoisting equipment is also generally slow in the hoisting process and fast in no-load return; in machining, the rotating speed of the main shaft can also be set to different rotating speeds according to requirements, rotating equipment such as running automobiles, hoisting equipment, component processing lathes and the like can change the rotating direction, the rotating speed is controlled, for example, in a transportation tool, the gear requirement of the forward rotating speed is more than that of reverse movement, the forward speed can advance at a speed higher than that of reverse movement, in machining, the forward rotating speed requirement in tool processing can be high-speed rotation or low-speed rotation, and in reverse rotation, the tool can be generally withdrawn from the vicinity of a workpiece under high-speed rotation to switch the unloading of the tool or the workpiece. However, in general mechanical transmission, when switching between high speed and low speed, corresponding operations are required to switch the rotational speed, and how to switch between low speed and high speed without any operation will simplify the operation procedure, reduce the operation procedure in the driving process, be more beneficial to the concentration of drivers and operators, reduce the operation errors, and improve the driving safety factor.
Disclosure of Invention
To the high-speed and low-speed condition that just can realize that need operate among the switching process among the mechanical equipment, the inventor has carried out relevant research, the utility model provides a two ratchet power linkage, its purpose is simplified mechanical structure, reduces the switching when changing speed, reduces operating procedure, and the mechanical system's when realizing changing speed natural transition need not to change high-speed or low-speed interlock state through the operation.
The technical scheme of the utility model is that: a double-ratchet power linkage mechanism comprises a power output shaft, wherein the power linkage mechanism comprises an inner wheel and an outer wheel, the inner wheel is a driving wheel, the outer wheel is arranged on the periphery of the inner wheel, the outer wheel is a driven wheel, a gap is formed between the inner wheel and the outer wheel, an inner pawl is rotatably arranged on the periphery of the inner wheel, an outer pawl is rotatably arranged on the inner periphery of the outer wheel, an inner ratchet wheel and an outer ratchet wheel are respectively arranged on the periphery of the inner wheel and the inner periphery of the outer wheel, ratchets on the outer ratchet wheel and the inner ratchet wheel are respectively matched with the end part of the inner pawl and the end part of the outer pawl, springs are respectively arranged on the outer pawl and the inner pawl, the outer wheel is connected with the power output shaft, and at least one;
further, the axes of the inner wheel and the outer wheel are the same, the directions of the ratchets of the outer ratchet wheel and the inner ratchet wheel in the circumferential direction are the same, and the directions of the end parts of the outer pawl and the inner pawl corresponding to the outer ratchet wheel and the inner ratchet wheel in the axial direction are also the same;
furthermore, the inner wheel is fixedly connected with the power input teeth, and the power output shaft is in spline connection with the outer wheel;
furthermore, the included angle formed by the inner and outer tooth edges of the ratchet and the tangent line of the inner or outer circumference of the inner ratchet wheel or the outer ratchet wheel is an acute angle;
furthermore, the spring arranged on the inner pawl has outward elasticity, and the spring arranged on the outer pawl has inward elasticity;
furthermore, the power output shaft is connected with power output teeth, and the power input teeth and the inner wheel are connected into a whole;
furthermore, the power output shaft is positioned in the center positions of the inner wheel and the outer wheel, and the power output shaft is in sliding connection with the center hole of the inner wheel.
The utility model discloses the positive effect who has is: the utility model discloses the positive effect who has is: the outer wheel is arranged on the periphery of the inner wheel, a gap is formed between the inner wheel and the outer wheel, the pawl which rotates outwards is arranged on the driving inner wheel, the pawl which rotates inwards is arranged on the driven outer wheel, the outward ratchet is arranged on the driving inner wheel, the inward ratchet is arranged on the driven outer wheel, the gap is favorable for relative motion between the inner wheel and the outer wheel, and is also favorable for leaving a moving room for the pawl between the inner wheel and the outer wheel, particularly, when the outer wheel serving as the driven outer wheel rotates at a high speed, one or more pawls on the outer wheel can freely rotate around a pawl rotating shaft, the pawl overcomes the action of spring force pressing the outer sides of the pawls inwards to throw outwards under the action of centrifugal force, the inner pawl is arranged on the periphery of the inner wheel in a rotating mode, the spring with the outward elasticity is arranged on the inner pawl, the inner pawl can rotate outwards and is meshed with the ratchet arranged on the inner periphery of the outer wheel, under the rotation of the power drive of the inner wheel, the inner pawl can be linked with the outer wheel to transmit the power to the outer wheel, and then the power is transmitted to the power output shaft.
When the inner wheel rotates slowly in the same direction, the centrifugal force is greater than the spring force of the outer pawl, the outer pawl is separated from the inner wheel by compressing the spring of the outer pawl, and if the rotation of the driving inner wheel stops or the rotation speed is lower than that of the driven outer wheel, the rotation speed of the outer pawl on the driving inner wheel exceeds that of the inner wheel and is in a no-load sliding state, the inner ratchet wheel does not act, and the outer pawl retracts into the inner part of the driven outer wheel under the action of the centrifugal force, also does not provide a driving action; when the power on the inner wheel stops, the outer wheel continues to rotate under the action of inertia, under the condition, the speed is gradually reduced, the centrifugal force of the outer pawl under high-speed rotation is reduced, the spring force of the outer pawl is greater than the centrifugal force, the outer pawl rotates towards the direction of the circle center, the outer pawl is meshed with the ratchet teeth of the inner wheel, the outer pawl drives the inner wheel to start synchronous rotation, and at the moment, the inner pawl and the ratchet teeth of the outer wheel are in a synchronous state and do not act until the inertia power is removed; the utility model discloses a pawl and outer pawl in setting up respectively in interior wheel and foreign steamer to set up corresponding ratchet respectively in interior wheel periphery and foreign steamer, can simplify mechanical structure, switching when reducing the change speed reduces operating procedure, and the mechanical system's when realizing the change speed natural transition need not to change high-speed or low-speed interlock state through the operation.
Drawings
Fig. 1 shows an application example of the present invention.
Fig. 2 is an exploded view of the power linkage mechanism.
Fig. 3 is an exploded view of the power linkage mechanism.
Fig. 4 is a partial sectional view of the power link mechanism.
Fig. 5 is a front view of the inner wheel.
Fig. 6 is a front view of the outer wheel.
Description of reference numerals: 10-drive shaft, 11-drive teeth, 12-power input teeth, 13-power output teeth, 14-power output shaft, 15-power receiving teeth, 16-differential, 17-outer wheel, 17 a-outer pawl, 17 b-outer ratchet, 18-inner wheel, 18 a-inner pawl, 18 b-inner ratchet, 19 a-outer spline, 19 b-inner spline, 20 a-spring I, 20 b-spring II and 21-compression spring wire.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to the accompanying drawings.
The technical scheme of the utility model is that: a double-ratchet power linkage mechanism comprises a power input shaft and a power output shaft 14, wherein fig. 1 is an application example of the utility model, fig. 2 is a first exploded view of the power linkage mechanism, and fig. 3 is a second exploded view of the power linkage mechanism. Fig. 4 is a partially cut-away view of the assembled portion of the power link mechanism. Wherein figure 2 shows primarily the inner wheel side of the power linkage and figure 3 shows primarily the outer wheel side of the power linkage. In the figure, 10 is a driving shaft of the driving device, the driving shaft 10 is assembled with driving teeth 11, the driving teeth 11 are engaged with power input teeth 12, the power input teeth 12 are connected with an inner wheel 18 into a whole, the power linkage mechanism comprises an inner wheel and an outer wheel, the inner wheel 18 is a driving wheel, the outer wheel 18 is arranged on the periphery of the inner wheel 17 and is a driven wheel, a gap is arranged between the inner wheel 18 and the outer wheel 17, an inner pawl 18a is arranged on the periphery of the inner wheel 18 in a rotating way, an outer pawl 17a is arranged on the periphery of the outer wheel 17 in a rotating way, an inner ratchet wheel and an outer ratchet wheel are respectively arranged on the periphery of the inner wheel 18 and the inner periphery of the outer wheel 17, the ratchet teeth on the outer ratchet wheel and the inner ratchet wheel are respectively matched with the end part of the inner pawl 18a and the end part of the outer pawl 17a, a first spring 20a with inward elasticity and a second spring 20b with outward elasticity are respectively arranged on the outer side of the outer pawl 17a and the inner side of, a first spring 20a is arranged in each hole, and each hole is provided with a first spring 20a which is fixed in a hole which is radially opened in the outer wheel 17 through a compression spring wire 21 in a threaded mode. The outer wheel 17 is connected with a power output shaft 14, the power output shaft 14 is fixedly connected with power output teeth 13, and when the power output shaft rotates, at least one pawl can link the inner wheel 18 and the outer wheel 17.
In the embodiment, three outer pawls 17a and three inner pawls 18a are provided, and three outer ratchets 17c and three inner ratchets 18c which are three times as many as the outer pawls 17a and the inner pawls 18a are provided on the inner ratchet and the outer ratchet, in the embodiment, the power linkage mechanism is applied to a rear axle of the electric tricycle, the power receiving teeth 15 are engaged on the power output teeth 13, the power receiving teeth 15 are used as power input teeth of the differential 16 to transmit power to the differential 16, and the differential 16 transmits the power to half shafts connected at two sides respectively, and then the half shafts drive wheels to rotate.
In this embodiment, the counterclockwise direction is a forward direction, the clockwise direction is a reverse direction, and the inner ring 18 is driven to rotate at a high speed or at a low speed, the inner pawls 18a and the outer ratchet teeth 17b of the outer ring 18 are interlocked with each other at the high speed, the outer pawls 17a are thrown to the inner periphery of the outer ring 18 to rotate at a high speed, and the outer pawls 17a and the inner ratchet teeth 18b of the inner ring are interlocked to perform reverse movement at the clockwise direction.
The rotation axes of the inner wheel 18 and the outer wheel 17 are the same, the ratchets of the outer ratchet wheel and the inner ratchet wheel are in the same direction in the circumferential direction, and the end parts of the outer pawl 17a and the inner pawl 18a corresponding to the outer ratchet wheel and the inner ratchet wheel are in the same direction in the axial direction.
The inner wheel 18 is fixedly connected with the power input teeth 12, the power output shaft 14 is in spline connection with the outer wheel 17, specifically, the power output shaft is provided with an external spline 19a, and the inner periphery of the outer wheel 17 is provided with an internal spline 19 b.
The included angle formed by the inner and outer tooth edges of the inner ratchet 18b and the outer ratchet 17b and the tangent of the inner circumference or the outer circumference of the inner ratchet or the outer ratchet is an acute angle.
Fig. 5 is a front view of the inner wheel. Fig. 6 is a front view of the outer wheel. The inner pawl 18a is provided with a spring II 20b with outward elasticity close to the circle center side of the inner wheel 18, and the outer pawl 17a is provided with a spring I20 a with inward elasticity on the outer periphery side of the outer wheel 17.
The power output shaft 14 is connected with power output teeth which are connected with the inner wheel 18 into a whole.
The power output shaft 14 is positioned at the central positions of the inner wheel 18 and the outer wheel 17, and the power output shaft 14 is in sliding connection with the central hole of the inner wheel 18.
The utility model discloses the positive effect who has is: the utility model discloses the positive effect who has is: the outer wheel 17 is arranged on the periphery of the inner wheel 18, a gap is arranged between the inner wheel 18 and the outer wheel 17, an inner pawl 18a moving outwards in a rotating way is arranged on the driving inner wheel 18, an outer pawl 17a moving inwards in a rotating way is arranged on the driven outer wheel 17, an inner ratchet 18b is arranged on the driving inner wheel 18, an outer ratchet 17b is arranged on the driven outer wheel 17, the gap is favorable for the relative movement between the inner wheel 18 and the outer wheel 17 and is also favorable for leaving a pawl movement space between the inner wheel 18 and the outer wheel 17, particularly, when the outer wheel 17 rotates at a high speed, one or more outer pawls 17a on the outer wheel 17 serving as the driven outer wheel 17 can freely rotate around a pawl rotating shaft, the outer pawl 17a overcomes the action of a spring 20a pressing the outer side of the outer pawl inwards under the action of centrifugal force, the inner pawl 18a is arranged on the periphery of the inner wheel 18 in a rotating way, and a spring 20b with the action of the outer pawl 18a is arranged on the inner pawl 18a, the inner pawl 18a can be rotated outward to engage with the ratchet teeth provided on the inner periphery of the outer wheel 17, and when the inner wheel 18 is rotated by power, the inner pawl 18a is interlocked with the outer wheel 17 to transmit power to the outer wheel 17, and then to the power output shaft 14.
In the above embodiments, the electro-tricycle rear axle is taken as an example, and the technical solution may be applied to mechanical transmission aspects such as machining and engineering vehicles.
The power input teeth 12 are fixed on the inner wheel 18, the power can be transmitted to the inner wheel 18, the rotating speed can be fast rotation or slow rotation in the linkage of the inner pawl 18a of the inner wheel 18 and the outer wheel 17, when the inner wheel 18 rotates slowly to the driving direction, the driven outer wheel 17 is driven to rotate synchronously in the same direction, the outer pawl 17a on the driven outer wheel 17 and the inner wheel 18 are relatively static and do not act, when the inner wheel 18 rotates rapidly in the same direction, the rotating centrifugal force is larger than the spring force of the outer pawl 17a, the spring of the outer pawl 17a is compressed to separate the outer pawl 17a from the inner wheel 18, at the moment, if the inner wheel 18 stops rotating or the rotating speed is lower than the rotating speed of the driven outer wheel 17, the rotating speed of the inner pawl 18a on the inner wheel 18 and the outer ratchet 17b on the driven outer wheel 17 is in the state that the rotating speed of the outer wheel 17 exceeds the rotating speed of the inner wheel 18, and is in the state of no-load slip, the inner ratchet wheel does not act, the outer pawl 17a retracts inside the driven outer wheel 17 due to the action of centrifugal force, and driving action is not provided; after the power on the inner wheel 18 stops, the outer wheel 17 continues to rotate under the action of inertia, in this case, the speed is gradually reduced, the centrifugal force of the outer pawl 17a under high-speed rotation is reduced, after the elastic force of a spring 20a on the outer pawl 17a is greater than the centrifugal force, the outer pawl 17a rotates towards the direction of the circle center, the outer pawl 17a is meshed with the ratchet teeth of the inner wheel 18, the outer pawl 17a drives the inner wheel 18 to start synchronous rotation, and at the moment, the inner pawl 18a and the outer ratchet teeth 17b of the outer wheel 17 are in a synchronous state and do not act until the inertia power is removed; the utility model discloses a pawl 18a and outer pawl 17a in setting up respectively on interior wheel 18 and foreign steamer 17 to set up corresponding interior ratchet 18b and outer ratchet 17b respectively in interior wheel 18 periphery and foreign steamer 17 internal week, can simplify mechanical structure, reduce the switching when changing speed, reduce the operating procedure, mechanical system's when realizing changing speed natural transition need not to change high-speed or low-speed interlock state through the operation.
Claims (7)
1. The utility model provides a double-ratchet power linkage mechanism, includes power output shaft, its characterized in that: the power linkage mechanism comprises an inner wheel and an outer wheel, the inner wheel is a driving wheel, the outer wheel is arranged on the periphery of the inner wheel and is a driven wheel, a gap is formed between the inner wheel and the outer wheel, an inner pawl is rotationally arranged on the periphery of the inner wheel, an outer pawl is rotationally arranged on the periphery of the outer wheel, an inner ratchet wheel and an outer ratchet wheel are respectively arranged on the periphery of the inner wheel and the inner periphery of the outer wheel, ratchets on the outer ratchet wheel and the inner ratchet wheel are respectively matched with the end part of the inner ratchet pawl and the end part of the outer pawl, springs are respectively arranged on the outer ratchet wheel and the inner pawl, a power output shaft is connected onto the outer wheel, and when the power linkage mechanism rotates.
2. The dual ratchet power linkage of claim 1, wherein: the axes of the inner wheel and the outer wheel are the same, the directions of the ratchets of the outer ratchet wheel and the inner ratchet wheel in the circumferential direction are the same, and the directions of the end parts of the outer pawl and the inner pawl corresponding to the outer ratchet wheel and the inner ratchet wheel in the circumferential direction are also the same.
3. The dual ratchet power linkage of claim 1, wherein: the inner wheel is fixedly connected with the power input teeth, and the power output shaft is connected with the outer wheel through splines.
4. The dual ratchet power linkage of claim 1, wherein: the included angle formed by the inner and outer tooth edges of the ratchet and the tangent of the inner or outer circumference of the inner ratchet wheel or the outer ratchet wheel is an acute angle.
5. The dual ratchet power linkage of claim 1, wherein: the spring elasticity that sets up on the interior pawl is outside, and the spring elasticity that sets up on the outer pawl is inside.
6. The dual ratchet power linkage of claim 1, wherein: the power output shaft is connected with power output teeth, and the power input teeth and the inner wheel are connected into a whole.
7. The dual ratchet power linkage of claim 1, wherein: the power output shaft is positioned in the center positions of the inner wheel and the outer wheel, and the power output shaft is in sliding connection with the center hole of the inner wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020915593.5U CN212131207U (en) | 2020-05-27 | 2020-05-27 | Double-ratchet power linkage mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020915593.5U CN212131207U (en) | 2020-05-27 | 2020-05-27 | Double-ratchet power linkage mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212131207U true CN212131207U (en) | 2020-12-11 |
Family
ID=73669047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020915593.5U Expired - Fee Related CN212131207U (en) | 2020-05-27 | 2020-05-27 | Double-ratchet power linkage mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212131207U (en) |
-
2020
- 2020-05-27 CN CN202020915593.5U patent/CN212131207U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201211 Termination date: 20210527 |