CN220640150U - Differential tower foundation system - Google Patents
Differential tower foundation system Download PDFInfo
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- CN220640150U CN220640150U CN202322169030.2U CN202322169030U CN220640150U CN 220640150 U CN220640150 U CN 220640150U CN 202322169030 U CN202322169030 U CN 202322169030U CN 220640150 U CN220640150 U CN 220640150U
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- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000013016 damping Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 description 6
- 239000004519 grease Substances 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 4
- 230000035939 shock Effects 0.000 description 3
- 230000009699 differential effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
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- 239000007788 liquid Substances 0.000 description 1
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Abstract
The application belongs to the field of vehicles, and particularly relates to a differential tower foundation system which comprises a tower foundation, a flywheel, a bearing and a wheel shaft, wherein counter sunk holes are formed in two opposite end surfaces of the tower foundation along the axis of the tower foundation, each counter sunk hole comprises a ratchet wheel section and a bearing section, uniform ratchets are arranged on the inner wall of the ratchet wheel section, and the bearing is fixedly connected with the bearing section; one end of the wheel shaft is configured to be fixed with the rear wheel of the tricycle, the other end of the wheel shaft is matched with the bearing, a plurality of pawls are arranged on the side wall of the wheel shaft, which is close to one end of the tower foundation, and the pawls are distributed in an array along the circumference of the axis of the wheel shaft and are matched with the ratchet teeth; the flywheels are connected to the outer wall of the tower foundation and are perpendicular to the axis of the tower foundation. The method has the effect of coordinating the differential speed of the two rear wheels of the vehicle in the turning process.
Description
Technical Field
The application relates to the field of vehicles, in particular to a differential tower foundation system.
Background
In the steering process of the vehicle, because the strokes of the inner side and the outer side of the vehicle are different, the wheels on the left side and the right side of the vehicle can generate differential speed, and because most of the vehicles are driven by the rear wheels and are linked with the transmission shaft, the two rear wheels cannot adapt to the differential speed, and an additional device is needed for coordinating the differential speed.
The differential structure commonly used in the automotive field is a planetary gear differential, and torque of a transmission is distributed in a self-adaptive manner through the cooperation of a gear set, so that the advancing distance of a left tire and a right tire is matched with the steering of a vehicle on the premise of ensuring the transmission.
However, in the field of light vehicles such as tricycles, particularly in human powered vehicles, it is too luxury to provide a planetary gear differential and the physical effort during riding is greatly increased, so that there is a need for a differential device that is adapted to the light vehicles.
Disclosure of Invention
In order to solve the problems, the application provides a differential tower foundation system for coordinating the differential speed of two rear wheels of a vehicle in the turning process.
The differential tower footing system provided by the application adopts the following technical scheme:
a differential tower foundation system comprises a tower foundation, a flywheel, a bearing and an axle,
the tower foundation is provided with countersunk holes along the axes of the two opposite end surfaces, each countersunk hole comprises a ratchet wheel section and a bearing section, the inner wall of each ratchet wheel section is provided with uniform ratchets, and the bearings are fixedly connected with the bearing sections; one end of the wheel shaft is configured to be fixed with a rear wheel of the tricycle, the other end of the wheel shaft is matched with the bearing, a plurality of pawls are arranged on the side wall of the wheel shaft, which is close to one end of the tower foundation, and the pawls are distributed in a circumferential array along the axis of the wheel shaft and are matched with the ratchet teeth; the flywheels are connected to the outer wall of the tower foundation and are perpendicular to the axis of the tower foundation.
By adopting the technical scheme, when two rear wheels of the tricycle have no differential speed, the tower footing is normally meshed with the wheel axle to provide torque for the two rear wheels; when two rear wheels of the tricycle generate differential speed, the slow wheels are meshed with the tower footing, the fast wheels generate larger angular velocity under the interaction of the frame and the ground, and corresponding pawls and ratchets are disengaged, so that the differential speed effect is realized.
Optionally, the outer wall of tower footing is equipped with the spline parallel with its axis, the flywheel with the spline corresponds to set up the keyway, the flywheel passes through the spline with the cooperation of keyway, can dismantle connect in the outer wall of tower footing.
Through adopting above-mentioned technical scheme, a plurality of flywheels can dismantle the outer wall of piling up in the tower base, under the circumstances of guaranteeing the moment of torsion conduction, dismantle conveniently.
Optionally, the tower foundation further includes the pot head, the outer wall of tower foundation is close to the position of one of them terminal surface and is equipped with the flange, the external diameter of flange is greater than the aperture of flywheel, the tower foundation is close to the position of another terminal surface and is equipped with the external screw thread, the pot head with the external screw thread cooperation sets up, a plurality of flywheel configuration in the flange with between the pot head.
Through adopting above-mentioned technical scheme, a plurality of flywheel cards are located between flange and the pot head, and the assembly is stable, and it is convenient to dismantle, whether be in the variable speed design, or the local change after the component wearing and tearing, all has better suitability.
Optionally, the outer diameters of the plurality of flywheels are different from each other, and the flywheels are sequentially arranged along the axial direction of the tower foundation.
By adopting the technical scheme, when the chain is meshed with the flywheels with different outer diameters, the transmission ratio of the driving wheel and the flywheels is changed, so that the effects of adjusting the speed and the power are achieved.
Optionally, the bearing section is disposed on a side of the ratchet section near the end surface, and an inner diameter of the bearing is greater than an inner diameter of the ratchet section.
By adopting the technical scheme, the bearing for bearing the load of the vehicle has a larger diameter, the stability of the vehicle can be improved, and the ratchet wheel section for transmitting the torque can realize the torsional strength matched with the load by using a smaller diameter.
Optionally, the axle has an outer diameter in the pawl stowed condition that is less than a minimum inner diameter of the ratchet section.
By adopting the technical scheme, under the condition that the pawl is disengaged from the ratchet, the wheel shaft can freely rotate in the ratchet section, so that the differential effect is realized.
Optionally, radial pawl groove is seted up to the lateral wall of shaft, the pawl passes through compression spring and is connected with the bottom in pawl groove.
By adopting the technical scheme, the pawl is radially arranged in the pawl groove, can provide larger torsion load, and is suitable for low-speed heavy load.
Optionally, a tangential pawl groove is formed in the side wall of the wheel shaft, the pawl is rotationally connected with one side of the pawl groove through a hinge, a torsion spring is sleeved on the hinge, and two ends of the torsion spring are respectively fixed with the pawl and the wheel shaft.
By adopting the technical scheme, the pawl is hinged with the pawl groove, and when the pawl is disengaged from the ratchet, the pawl swings to more effectively and rapidly pass over the ratchet, so that the differential speed is realized, and the device is suitable for high-speed light load.
Optionally, a damping ring is arranged between the bearing and the tower foundation.
Through adopting above-mentioned technical scheme, when the vehicle marcing in-process, meetting the impact, can be buffered to a certain extent by the shock attenuation circle, make passenger's sense of jolting reduce.
Optionally, the bearing is a cylindrical roller bearing.
By adopting the technical scheme, the bearing has better bearing effect.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the rear wheels do not have the differential speed, the two wheel shafts are meshed with the tower footing to realize stable transmission, when the differential speed occurs to the two rear wheels, the slow wheels still keep meshed transmission with the tower footing, and the pawls corresponding to the fast wheels pass through the ratchet teeth to realize the differential speed effect;
2. the outer detachable connection of tower base a plurality of flywheels not only can realize the quick replacement after the component wearing and tearing, can realize the variable speed effect again.
Drawings
FIG. 1 is a view of the use of the differential foundation system of embodiment 1 of the present application;
FIG. 2 is an enlarged partial view of area A of FIG. 1;
FIG. 3 is an axial view of the foundation of example 1 of the present application;
FIG. 4 is a schematic cross-sectional view taken along line B-B of FIG. 3;
FIG. 5 is an exploded schematic view of the differential tower foundation system of example 1 of the present application;
FIG. 6 is a schematic cross-sectional view of the inner hexagonal cylinder jacket of example 1 of the present application;
fig. 7 is a schematic cross-sectional view of the inner hexagonal cylinder jacket of example 2 of the present application.
Reference numerals illustrate:
1. a tower foundation; 11. a countersunk hole; 111. a ratchet; 12. a spline; 13. a flange; 14. an end sleeve; 15. an external thread; 2. a flywheel; 21. a key slot; 3. a bearing; 4. a wheel axle; 41. a pawl; 42. a compression spring; 43. a hinge; 44. an inner hexagonal cylinder sleeve; 45. an outer hexagonal tenon; 51. a frame; 52. a chain; 53. a pedal; 54. and (3) driving wheels.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-7.
The application discloses a differential tower footing system.
Example 1
Referring to fig. 1 and 2, the differential tower base system is arranged between two rear wheels of a tricycle, and comprises a tower base 1, a flywheel 2, a bearing 3 and an axle 4, wherein the two rear wheels are respectively and rotatably connected with the tower base 1 through the axle 4, the tower base 1 is rotatably connected with a frame 51 through the bearing 3, a plurality of flywheels 2 with different diameters are detachably connected to the outer wall of the tower base 1, and the flywheels 2 are connected with pedals 53 through chains 52 and are used for driving the tower base 1 and the rear wheels to rotate.
Referring to fig. 3 and 4, counter bores 11 are formed in two opposite end surfaces of the tower foundation 1 along the axes of the counter bores 11, the depth of each counter bore 11 is one fourth to one third of the axial length of the tower foundation 1, each counter bore 11 is divided into a ratchet wheel section and a bearing section, the bearing section is arranged close to the end surface of the tower foundation 1, and the ratchet wheel section is arranged on one side of the bearing section away from the end surface of the tower foundation 1. The inner wall of the ratchet wheel section is provided with ratchet teeth 111 which are uniformly distributed, and the teeth directions of the two ratchet wheel sections are the same when observed along the same direction; the bearing section is internally clamped with a bearing 3, and the diameter of the inner ring of the bearing 3 is larger than the inner diameter of the ratchet section.
The outer wall of the tower foundation 1 is provided with a plurality of splines 12, the direction of the splines 12 is parallel to the axis of the tower foundation 1, and all the splines 12 are distributed in a circumferential array by taking the axis of the tower foundation 1 as the center. One end of the tower foundation 1 is provided with a flange 13, the flange 13 is fixedly connected with the tower foundation 1 and is higher than the top of the spline 12, one side of the spline 12 far away from the flange 13 is provided with an external thread 15, the tooth tops of the thread teeth are flush with the top of the spline 12, and the total tooth height is smaller than the height of the spline 12. The foundation 1 further comprises an end cap 14, the end cap 14 is detachably connected to the external thread 15 through threaded engagement, and the distance between the end cap 14 and the flange 13 is adjustable.
Referring to fig. 5, the flywheel 2 is provided with a central through hole, the edge of the through hole is provided with a key slot 21 matched with the spline 12, the through holes of all the flywheel 2 are the same as the key slot 21 in size and shape, the tooth shapes of the outer edges are the same, and the tooth numbers are different. The plurality of flywheels 2 are sleeved on the outer wall of the tower foundation 1, the flywheels 2 are attached to each other, one side of the flywheels 2 is abutted with the flange 13, and the other side of the flywheels 2 is abutted with the end cover. The outer diameter of the flywheel 2 gradually decreases with distance from the flange 13. Wherein the flywheel 2 with the largest diameter is in the same plane as the driving wheel 54 connected to the pedal 53.
Preferably, the differential tower footing system further comprises a speed regulating assembly for enabling the chain 52 to switch the engaged flywheel 2 to achieve the speed regulating effect.
Preferably, the tower foundation 1 further comprises a plurality of shims sleeved on the spline 12, and a fixed interval is formed between the adjacent flywheels 2 and between the flywheels 2 and the flange 13 by the shims, wherein the interval is preferably equal to the thickness of the flywheels 2 or smaller than the thickness of the flywheels 2 so as to prevent the chain 52 from being blocked.
The differential tower footing system in this embodiment includes three bearings 3, one of which connects the tower footing 1 with the frame 51, and the remaining two connects the axle 4 with the tower footing 1, and shock absorbing rings are provided between the bearings 3 and the frame 51, between the bearings 3 and the tower footing 1, and between the bearings 3 and the axle 4, for buffering shocks during traveling.
The bearing 3 is preferably a cylindrical roller bearing or a double row bearing.
One end of the wheel shaft 4 is fixedly connected with a wheel hub of the rear wheel, and the other end of the wheel shaft is connected with the tower foundation 1 in a unidirectional rotation manner, and specifically: one end of the wheel shaft 4 is provided with a spline 12, a key groove 21 is formed in the center of the wheel shaft corresponding to the spline 12, an external thread 15 is turned on one end of the spline 12 away from the tower foundation 1, a wheel roller is sleeved on the spline 12, one side of the wheel roller is abutted to one end of the spline 12 away from the external thread 15, and the other side of the wheel roller is screwed and fixed by a nut.
Referring to fig. 6, the other end of the axle 4 is provided with a plurality of pawls 41, the side wall of the axle 4 is provided with a plurality of radially arranged pawl grooves which are distributed in a circumferential array with the axis of the axle 4 as the center, the bottom of each pawl groove is provided with a compression spring 42, one end of each spring is fixedly connected with the bottom of the pawl groove, and the other end of each spring is connected with the pawl 41.
One end of the wheel shaft 4 provided with the pawl 41 is inserted into the counter bore 11 of the tower foundation 1 and fixedly connected with the inner ring of the bearing 3, the pawl 41 is suspended on the ratchet wheel section of the tower foundation 1, when the compression spring 42 is in a compressed state, the pawl 41 is completely retracted into the wheel shaft 4, a gap exists between the wheel shaft 4 and the ratchet wheel section of the counter bore 11 at the moment, and when the compression spring 42 is in a natural state, the pawl 41 pops out and is meshed with the ratchet 111. The angle of the top angle of the pawl 41 is the same as the angle of the bottom angle of the ratchet 111, and the force receiving surfaces of both in the loaded state are disposed in the axial direction.
The wheel axle 4 is close to the one end of pawl 41 and is outer hexagonal tenon 45, and wheel axle 4 still includes interior hexagonal cylinder cover 44, and pawl groove, pawl 41 and compression spring 42 all locate the lateral wall of interior hexagonal cylinder cover 44, and interior hexagonal cylinder cover 44 cover is located outer hexagonal tenon 45 and is fixed with the bolt to reach the effect that the part is changed easily damaged and is not needed to change whole wheel axle 4.
Preferably, an oil guiding groove is arranged on one side of the pawl groove, which is close to the stress surface of the pawl 41, lubricating grease is smeared on the ratchet section of the counter bore 11, after the wheel shaft 4 is inserted, the ratchet section of the counter bore 11 is closed, the lubricating grease lubricates the sliding between the pawl 41 and the ratchet 111, and the force of the pawl 41 and the ratchet 111 is vertical to the normal direction under the load state due to the arrangement of the stress surface direction, so that the lubricating grease cannot be influenced. In addition, when the wheel shaft 4 rotates at a high speed, the grease becomes liquid due to various reasons such as differential speed, vibration, heat conduction from the flywheel 2, etc., and is immersed in the pawl groove along the oil guide groove, thereby providing a lubricating effect on sliding between the pawl 41 and the pawl groove.
It should be noted that the two axles 4 in this embodiment are not equal in length, and the frame 51 is disposed on the center axis of the tricycle in consideration of balance, so that the driving wheel 54 and the flywheel 2 are disposed on one side of the frame 51, and accordingly, the tower 1 is also biased to one side of the frame 51, and the axle 4 on the side of the frame 51 near the tower 1 is shorter than the axle 4 on the side far from the tower 1.
The implementation principle of the embodiment 1 is as follows:
when the tricycle runs smoothly forward, the ratchet 111 of the tower foundation 1 is meshed with the pawl 41 of the wheel shaft 4, and the torque from the driving wheel 54 is transmitted to the rear wheels to drive the rear wheels to rotate, and the rotation angular speed of the two rear wheels is the same as that of the wheel shaft 4, the flywheel 2 and the tower foundation 1.
When the tricycle encounters disturbance or is in a turning state, the two rear wheels are differential, at the moment, the wheel shaft 4 of the slow wheel is meshed with the tower foundation 1, the fast wheel is pushed by the frame 51, the angular speed exceeds that of the slow wheel and the tower foundation 1, and then the corresponding pawl 41 of the fast wheel passes over the ratchet teeth 111 and is disengaged with the ratchet teeth 111, so that the differential effect is realized.
Example 2
Referring to fig. 7, this embodiment is different from embodiment 1 in that:
the side wall of the wheel axle 4 is provided with a plurality of tangentially arranged pawl grooves which are distributed in a circumferential array by taking the axis of the wheel axle 4 as the center, one end of each pawl 41 is rotationally connected with the pawl groove through a hinge 43, each hinge 43 is sleeved with a torsion spring, one end of each torsion spring is fixedly connected with the pawl groove, and the other end of each torsion spring is fixedly connected with the pawl 41. Alternatively, the bottom of each pawl slot is provided with a compression spring 42, one end of the spring is fixedly connected with one end of the pawl slot away from the hinge 43, and the other end of the spring is connected with one end of the pawl 41 away from the hinge 43.
One end of the wheel shaft 4 provided with the pawl 41 is inserted into the counter bore 11 of the tower foundation 1 and fixedly connected with the inner ring of the bearing 3, the pawl 41 is suspended on the ratchet wheel section of the tower foundation 1, when the compression spring 42 or the torsion spring is in a compressed state, the pawl 41 is completely retracted into the wheel shaft 4, a gap exists between the wheel shaft 4 and the ratchet wheel section of the counter bore 11, and when the compression spring 42 or the torsion spring is in a natural state, the pawl 41 pops out and is meshed with the ratchet 111.
The implementation principle of the embodiment 2 is as follows:
when the pawl 41 and the ratchet 111 are disengaged, the pawl 41 is in swing fit, the disengagement is lighter, and when the tricycle is in a light-load high-speed state, the pawl 41 structure of the embodiment is preferably selected.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (10)
1. A differential tower foundation system is characterized by comprising a tower foundation (1), a flywheel (2), a bearing (3) and an axle (4),
the tower foundation (1) is provided with countersunk holes (11) along the axes of the two opposite end surfaces, the countersunk holes (11) comprise ratchet wheel sections and bearing sections, the inner walls of the ratchet wheel sections are provided with uniform ratchets (111), and the bearings (3) are fixedly connected with the bearing sections;
one end of the wheel axle (4) is configured to be fixed with a rear wheel of the tricycle, the other end of the wheel axle is matched with the bearing (3), a plurality of pawls (41) are arranged on the side wall, close to one end of the tower foundation (1), of the wheel axle (4), the pawls (41) are distributed along the axis circumference array of the wheel axle (4), and the pawls (41) are matched with the ratchet teeth (111);
the plurality of flywheels (2) are connected to the outer wall of the tower foundation (1) and are perpendicular to the axis of the tower foundation (1).
2. Differential tower footing system according to claim 1, characterized in that the outer wall of the tower footing (1) is provided with splines (12) parallel to its axis, the flywheel (2) is provided with keyways (21) corresponding to the splines (12), and the flywheel (2) is detachably connected to the outer wall of the tower footing (1) by the cooperation of the splines (12) and the keyways (21).
3. The differential tower footing system according to claim 2, wherein the tower footing (1) further comprises an end cap (14), a flange (13) is provided at a position of the outer wall of the tower footing (1) near one of the end surfaces, the outer diameter of the flange (13) is larger than the aperture of the flywheel (2), an external thread (15) is provided at a position of the tower footing (1) near the other end surface, the end cap (14) is matched with the external thread (15), and a plurality of flywheels (2) are arranged between the flange (13) and the end cap (14).
4. Differential foundation system according to claim 1, characterized in that the outer diameters of the plurality of flywheels (2) are different, arranged in sequence in the axial direction of the foundation (1).
5. The differential tower footing system of claim 1, wherein the bearing section is disposed on a side of the ratchet section proximate the end face, and wherein the inner diameter of the bearing (3) is greater than the inner diameter of the ratchet section.
6. Differential tower foundation system according to claim 1, wherein the axle (4) has an outer diameter in the retracted state of the pawl (41) smaller than the smallest inner diameter of the ratchet section.
7. Differential tower foundation system according to claim 1, characterized in that the side walls of the axle (4) are provided with radial pawl grooves, the pawl (41) being connected to the bottom of the pawl groove by means of a compression spring (42).
8. The differential tower footing system according to claim 1, characterized in that a tangential pawl groove is provided on the side wall of the axle (4), the pawl (41) is rotatably connected with one side of the pawl groove through a hinge (43), a torsion spring is sleeved on the hinge (43), and two ends of the torsion spring are respectively fixed with the pawl (41) and the axle (4).
9. Differential foundation system according to claim 1, characterized in that a damping ring is arranged between the bearing (3) and the foundation (1).
10. Differential tower foundation system according to claim 1, characterized in that the bearing (3) is a cylindrical roller bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322169030.2U CN220640150U (en) | 2023-08-10 | 2023-08-10 | Differential tower foundation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322169030.2U CN220640150U (en) | 2023-08-10 | 2023-08-10 | Differential tower foundation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220640150U true CN220640150U (en) | 2024-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322169030.2U Active CN220640150U (en) | 2023-08-10 | 2023-08-10 | Differential tower foundation system |
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| Country | Link |
|---|---|
| CN (1) | CN220640150U (en) |
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2023
- 2023-08-10 CN CN202322169030.2U patent/CN220640150U/en active Active
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