CN216343768U - Real-time torque differential mechanism - Google Patents
Real-time torque differential mechanism Download PDFInfo
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- CN216343768U CN216343768U CN202122785870.2U CN202122785870U CN216343768U CN 216343768 U CN216343768 U CN 216343768U CN 202122785870 U CN202122785870 U CN 202122785870U CN 216343768 U CN216343768 U CN 216343768U
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Abstract
The utility model relates to the technical field of automobile differentials, in particular to a real-time torque differential, which comprises two groups of differential devices, wherein the differential devices are arranged on two sides of a driving wheel, each differential device comprises a driving wheel, a differential wheel device, a speed limiting wheel device and a driving shaft, a plurality of sliding holes uniformly distributed along the axis are formed in the driving wheel, a plurality of driving rod pieces are fixedly connected with the driving wheel, and the driving rod pieces are connected to the differential wheel devices; the speed limiting wheel device is arranged between the driving wheel and the differential wheel device, one side of the speed limiting wheel device is connected in the slide hole, and the other side of the speed limiting wheel device is connected to the differential wheel device; the driving shaft is connected to the differential gear device and the speed limiting gear device; the utility model skillfully locks the rotating speed ratio interval of the left wheel and the right wheel by utilizing the speed limiting wheel device, thereby realizing the purpose of limiting the rotating speed ratio of the wheels at both sides.
Description
Technical Field
The utility model relates to the technical field of automobile differentials, in particular to a real-time torque differential.
Background
The automobile differential mechanism can realize a mechanism that left and right (or front and rear) driving wheels rotate at different rotating speeds. Mainly comprises a left half shaft gear, a right half shaft gear, two planet gears and a gear carrier. The function is that when the automobile turns or runs on an uneven road surface, the left wheel and the right wheel roll at different rotating speeds, namely, the pure rolling motion of the driving wheels at two sides is ensured. The differential is provided for adjusting the difference in the rotational speeds of the left and right wheels. However, the differential has the disadvantage that since the differential allows the wheels on both sides to rotate at different speeds, when one side of the driving wheels of the vehicle slips or one side of the wheels lifts off due to heavy driving, all the power is transmitted to the slipping half shaft due to the constant torque action of the differential, so that the wheel on the slipping side rotates at a high speed, and the wheel on the other side loses the driving force, which may cause the vehicle to be in trouble and lose maneuverability. Limited slip differentials have emerged;
the Limited Slip Differential (LSD) is an improved differential for limiting wheel slip, and refers to a differential with rotational speed difference of driving wheels at two sides allowed within a certain range to ensure normal turning and other driving performances. The limited slip differential can better solve the defects of the common differential, and when the wheel on one side slips, the rotating speed of the slipping side wheel is limited, and the rotating speed of the wheel on the other side which does not slip is increased, so that the automobile continuously keeps power.
Chinese patent CN201810157064.0 discloses a limited slip differential, which comprises a differential case, wherein the differential case is provided with a power input device, two ends of the differential case are respectively and rotatably provided with half shafts along the axial direction, and the end parts of the two half shafts extending into the differential case are respectively and fixedly provided with half shaft gears; a differential transmission device corresponding to the two half-shaft gears is arranged in the differential shell, an inner limit sliding sleeve is fixedly arranged on at least one half shaft and positioned outside the half-shaft gear, an outer limit sliding sleeve is fixedly arranged on the differential shell, an annular limited slip space is formed between the inner limit sliding sleeve and the outer limit sliding sleeve, a limited slip end cover is hermetically arranged at the end opening of the annular limited slip space, the limited slip end cover is in sliding connection with the inner limited slip sleeve or the outer limited slip sleeve, and high-viscosity liquid is filled in the annular limited slip space; the outer peripheral surface of the inner limit sliding sleeve is provided with a plurality of sliding limit inner ring pieces, and the inner peripheral surface of the outer limit sliding sleeve is provided with a plurality of sliding limit outer ring pieces. The limited slip differential mechanism utilizes the friction force of the outer limit sliding sleeve, the inner limit sliding sleeve and high-viscosity liquid to prevent the slipping side wheel from increasing speed, so that the speed difference between the half shaft and the differential mechanism shell is reduced, but the mode causes a large amount of power to be consumed by the friction force, the energy waste is large, and the friction heat generation quantity is large.
SUMMERY OF THE UTILITY MODEL
To solve the above problems, the present invention provides a real-time torque differential.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a real-time torque differential mechanism comprises two groups of differential devices, wherein the differential devices are arranged on two sides of a driving wheel and comprise a driving wheel, a differential wheel device, a speed limiting wheel device and a driving shaft;
the speed limiting wheel device is arranged between the driving wheel and the differential wheel device, one side of the speed limiting wheel device is connected in the mounting groove, and the other side of the speed limiting wheel device is connected to the differential wheel device;
two speed limiting wheel devices at corresponding positions on the two groups of differential devices are arranged in the same mounting groove, and the two speed limiting wheel devices are connected through gear engagement;
the driving shaft is connected to the differential gear device and the speed limiting gear device.
As optimization, the speed limiting wheel device comprises a first speed limiting gear, a speed limiting gear rod and a second speed limiting gear arranged on the driving shaft;
the first speed limiting gear is arranged on the differential wheel device;
the speed-limiting gear rod comprises a constant speed gear, a reduction gear and an intermediate gear, the constant speed gear is coaxially and fixedly connected with the reduction gear, a rotating shaft is arranged on one side of the constant speed gear, the intermediate gear is arranged on the rotating shaft, and the rotating shaft is rotatably arranged in the mounting groove;
the constant speed gear is meshed with the second speed limiting gear, and the reduction gear is meshed with the first speed limiting gear.
Preferably, the mounting groove comprises two sliding holes, a gear groove is connected between the two sliding holes, two speed-limiting gear rods at corresponding positions on the two sets of differential devices are respectively mounted in the two sliding holes through rotating shafts and are meshed and connected through an intermediate gear, and the intermediate gear is arranged in the gear groove.
Preferably, the differential gear device comprises a first bevel gear, a second bevel gear and a planetary gear, the first bevel gear is coaxially and fixedly connected with the driving shaft, the first speed limiting gear is coaxially and fixedly connected to the second bevel gear, the planetary gear is meshed with the first bevel gear and the second bevel gear, and the planetary gear is rotatably connected to the driving rod.
Preferably, the first speed limiting gear is an internal gear.
Preferably, the driving shaft passes through the second bevel gear and is connected to the speed-limiting gear rod.
Preferably, the differential device is externally provided with a shell, the shell is fixed on the driving wheel, the driving rod piece is fixed on the shell, and the driving rod piece is fixedly connected with the driving wheel through the shell.
Preferably, the reference circle diameter of the constant speed gear is larger than that of the reduction gear, and the speed-limiting gear rod is used for carrying out differential torque transmission on the driving shaft and limiting the rotation speed ratio of the left wheel and the right wheel of the automobile.
As optimization, the mounting groove be equipped with 2 ~ 4, the corresponding speed limit wheel device of installing in the mounting groove on same differential gear is equipped with 2 ~ 4.
Preferably, the rotating shaft is installed in the sliding hole through a bearing bush.
The real-time torque differential mechanism has the advantages that the real-time torque differential mechanism can reduce the speed of wheels at the slipping side without a friction blocking structure, safe driving is guaranteed, and the wheels at the left side and the right side have upper limits and lower limits under the condition that the rotating speed of the driving wheel is fixed, so that a rotating speed ratio interval is formed. The real-time torque differential mechanism is provided with a rotation speed ratio interval, so that when a wheel slips, the rotation speed cannot rise without limit, the non-slip side cannot stop, and the wheel on the non-slip side can continue to move forwards.
Drawings
Fig. 1 is a schematic diagram of the transmission principle of the utility model.
FIG. 2 is a schematic axial view of the internal structure of the present invention.
FIG. 3 is a schematic axial view of the present invention.
FIG. 4 is a left side view of the present invention.
FIG. 5 is a schematic structural view of a speed limiting gear rod of the present invention.
Fig. 6 is a schematic view of a driving wheel in embodiment 1 of the present invention.
Fig. 7 is a side schematic view of the drive wheel of fig. 6 in accordance with the present invention.
Fig. 8 is a schematic cross-sectional view a-a of fig. 7 according to the present invention.
FIG. 9 is a schematic cross-sectional view B-B of FIG. 7 according to the present invention.
Fig. 10 is a schematic view of a driving wheel according to embodiment 2 of the present invention.
Fig. 11 is a schematic view of the drive shaft of the present invention.
FIG. 12 is a schematic view of a differential assembly according to one aspect of the present invention.
Fig. 13 is a partially enlarged schematic view of a portion a of fig. 12 showing the connection of the speed limiting gear.
The speed limiting device comprises a differential device 1, a differential device 2, a driving wheel 3, a differential wheel device 4, a speed limiting wheel device 5, a driving shaft 6, a sliding hole 7, a driving rod 8, a first speed limiting gear 9, a speed limiting gear rod 10, a second speed limiting gear 11, a constant speed gear 12, a reduction gear 13, a rotating shaft 14, a first bevel gear 15, a second bevel gear 16, a planetary gear 17, a shell 18, a mounting groove 19, a gear groove 20 and an intermediate gear.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Example 1
As shown in fig. 1, a real-time torque differential mechanism includes two sets of differential devices 1, where the differential devices 1 are disposed on two sides of a driving wheel 2, driving teeth (not shown in the figure) connected to an engine are disposed on an outer circumference of the driving wheel 2, the driving teeth are straight teeth or helical teeth, the differential device 1 includes the driving wheel 2, a differential wheel device 3, a speed limiting wheel device 4 and a driving shaft 5, the driving wheel 2 is provided with 2 mounting grooves 18 uniformly distributed along an axis, the driving wheel 2 is fixedly connected with a plurality of driving rod members 7, and the driving rod members 7 are connected to the differential wheel device 3;
as shown in fig. 2, the speed-limiting wheel device 4 is arranged between the driving wheel 2 and the differential wheel device 3, one side of the speed-limiting wheel device 4 is connected in the mounting groove 18, and the other side is connected to the differential wheel device 3;
two speed limiting wheel devices 4 at corresponding positions on the two groups of differential devices 1 are arranged in the same mounting groove 18, and the two speed limiting wheel devices 4 are connected in a meshing way through gears;
as shown in fig. 2, the driving shaft 5 is connected to the differential wheel device and the speed limiting wheel device 3 4, and the other end of the driving shaft is externally connected to the vehicle wheel.
As shown in fig. 1 or 2, the speed limiting wheel device 4 includes a first speed limiting gear 8, a speed limiting gear rod 9 and a second speed limiting gear 10 arranged on the driving shaft 5;
as shown in fig. 2 or fig. 13, the first speed-limiting gear 8 is arranged on the differential gear device 3;
as shown in fig. 1 or 5, the speed-limiting gear rod 9 includes a constant speed gear 11, a reduction gear 12 and an intermediate gear 20, the constant speed gear 11 and the reduction gear 12 are coaxially and fixedly connected, a rotating shaft 13 is disposed on one side of the constant speed gear 11, the intermediate gear 20 is disposed on the rotating shaft, and the rotating shaft 13 is rotatably mounted in the mounting groove 18;
the speed-limiting gear rod 9 is formed by combining tooth columns with different diameters, and is a key part for realizing the purpose of limiting slip, the ratio of the reference circle diameter of the constant-speed gear and the reduction gear is adjusted, namely the speed ratio interval between the wheels at two sides can be adjusted, and the specific calculation method is out of the range included in the utility model.
As shown in fig. 1 or 13, the constant speed gear 11 is engaged with the second speed limit gear 10, and the reduction gear 12 is engaged with the first speed limit gear 8.
The mounting groove 18 comprises two sliding holes 6, a gear groove 19 is connected between the two sliding holes 6, two speed-limiting gear rods 9 at corresponding positions on the two groups of differential devices 1 are respectively mounted in the two sliding holes 6 through rotating shafts 13 and are meshed and connected through an intermediate gear 20, and the intermediate gear 20 is arranged in the gear groove 19. The intermediate gear 20 is used to realize the differential device 1 connecting the two sides of the driving wheel 2, and realize the interaction between the wheels at the two sides, mainly the mutual limitation of the rotation speed ratio.
As shown in fig. 1 or 2, the differential gear device 3 includes a first bevel gear 14, a second bevel gear 15 and a planetary gear 16, the first bevel gear 14 is coaxially and fixedly connected with the driving shaft 5, the first speed limiting gear 8 is coaxially and fixedly connected to the second bevel gear 15, the planetary gear 16 is engaged with the first bevel gear 14 and the second bevel gear 15, and the planetary gear 16 is rotatably connected to the driving rod 7.
Planetary gear be equipped with 2 ~ 3, the drive member that corresponds the connection is equipped with 2 ~ 3.
In order to realize the rotation of the reduction gear 12 and the second bevel gear 15 in the same direction, the first speed limiting gear 8 is an internal gear.
The driving shaft 5 passes through a second bevel gear 15 and is connected to the speed limiting gear rod 9.
As shown in fig. 2 or fig. 3, a housing 17 is provided outside the differential device 1, the housing 17 is fixed on the driving wheel 2, the driving rod 7 is fixed on the housing 17, and the driving rod 7 is fixedly connected with the driving wheel 2 through the housing 17.
In order to fix the rotation speed ratio of the left wheel and the right wheel of the automobile in a certain interval, the reference circle diameter of the constant speed gear 11 is larger than the reference circle diameter of the reduction gear 12, the speed-limiting gear rod 9 is used for carrying out differential torque transmission on the driving shaft 5, and the rotation speed ratio of the left wheel and the right wheel of the automobile is limited through gear transmission with different tooth numbers.
The number of the mounting grooves 18 is two, the number of the speed limiting wheel devices 4 correspondingly mounted in the mounting grooves 18 on the same differential device 1 is two, the number of the corresponding planetary gears 16 is three, and the number of the speed limiting gear rods 9 is three.
The driving rod 7 is a rigid rod and is used for providing a rotating force for the driving wheel 2 to the driving shaft 5.
In order to realize that the speed-limiting gear rod 9 can rotate and rotate along with the driving wheel 2, the rotating shaft 13 is arranged in the sliding hole through a bearing bush.
Example 2
The difference of this embodiment lies in, is equipped with three mounting groove on the action wheel 2, and the speed limit wheel device 4 who corresponds to install in mounting groove 18 is equipped with threely, and corresponding planetary gear 16 is equipped with threely, and speed limit gear pole 9 is equipped with threely. The remaining features are the same as those of embodiment 1 and are not described again.
The utility model principle is as follows:
when the vehicle runs normally, the driving wheel 2 rotates synchronously with the driving shafts 5 on two sides, n0 is n1 is n2, wherein n0 is the rotating speed of the driving wheel 2, n1 and n2 are the rotating speeds of the two driving shafts 5 respectively, and the differential wheel device 3 and the speed limiting wheel device 4 rotate synchronously and do not work; when one side slips, the slip side rotation speed n2 rises, the first bevel gear 14 and the second bevel gear 15 of the differential device 3 rotate relatively, namely the side driving shaft 5 and the driving wheel 2 rotate relatively, and simultaneously the driving wheel 2 and the non-slip side driving shaft 5 also rotate relatively, the relative rotation speed difference is equal, namely n2> n0> n1, the rotation speed of the slip side driving shaft 5 can be limited by the rotation speed of the non-slip side driving shaft 5, thereby limiting the rotation speed ratio of the left wheel and the right wheel;
the rotating speed of the wheel on the side with the higher rotating speed is limited by the side with the lower rotating speed of the wheel, so that the purpose of limiting the interval of the rotating speed ratio of the wheels on the two sides is achieved.
The precondition for the following situation is that the same fixed rotational speed of the driving wheel 2 is provided.
When the wheels on the two sides are all grounded and the external force is the same, all parts rotate along with the driving wheel 2, the rotating speed is the same as that of the driving wheel 2, all parts do not rotate, and the rotating speeds of the wheels on the two sides are the same.
When one side wheel slips, the driving shaft 5 on the side rotates in an accelerating way, and the rotation of the speed-limiting gear rod 9 engaged with the driving shaft 5 rotates in the opposite direction; the other side non-slip side driving shaft 5 rotates in a speed reduction mode, the rotation direction of the speed-limiting gear rod 9 is the same as that of the driving shaft 5, the driving wheel 2 drives the speed-limiting gear rod 9 to rotate around the driving shaft 5 along the rotation direction of the driving shaft 5, the speed reduction gear 12 performs speed reduction movement relative to the constant speed gear 11, the rotating speed of the second bevel gear 15 is smaller than that of the driving wheel 2, at the moment, the revolution speed between the planetary gear 16 and the driving wheel 2 is the same, and therefore torque is transmitted to the driving shaft 5 to drive the driving shaft 5 to rotate, and the rotating speed of the non-slip side driving shaft 5 has a lower limit; the rotation direction of the non-slip side speed limit gear lever 9 is opposite to the rotation direction of the slip side speed limit gear lever 9, and the rotation speed is the same, so the non-slip side speed limit gear lever 9 limits the rotation speed of the slip side speed limit gear lever 9, thereby limiting the rotation speed of the slip side drive shaft 5, and making the rotation speed of the slip side drive shaft 5 have an upper limit.
In summary, when the rotational speed of the primary pulley 2 is fixed, the left and right wheels have upper and lower limits, the ratio of the upper and lower limits is the rotational speed ratio of the two wheels, and the interval formed by the minimum value and the maximum value of the rotational speed ratio is the limited rotational speed ratio interval. The utility model has a rotation speed ratio interval, so that when the wheel slips, the rotation speed can not rise without limit, the driving shaft 5 at the non-slip side can not stop, and the wheel at the non-slip side can continue to move forwards.
The above embodiments are merely exemplary embodiments of the present invention, and the scope of the present invention includes but is not limited to the above embodiments, and any real-time torque differential according to the claims and any suitable changes or modifications thereof by those of ordinary skill in the art shall fall within the scope of the present invention.
Claims (10)
1. A real-time torque differential, comprising: the differential mechanism comprises two groups of differential devices, wherein the differential devices are arranged on two sides of a driving wheel, each differential device comprises a driving wheel, a differential wheel device, a speed limiting wheel device and a driving shaft, a plurality of groups of mounting grooves which are uniformly distributed along the axis are formed in the driving wheel, a plurality of driving rod pieces are fixedly connected with the driving wheel, and the driving rod pieces are connected to the differential wheel devices;
the speed limiting wheel device is arranged between the driving wheel and the differential wheel device, one side of the speed limiting wheel device is connected in the mounting groove, and the other side of the speed limiting wheel device is connected to the differential wheel device;
two speed limiting wheel devices at corresponding positions on the two groups of differential devices are arranged in the same mounting groove, and the two speed limiting wheel devices are connected through gear engagement;
the driving shaft is connected to the differential gear device and the speed limiting gear device.
2. A real time torque differential as defined in claim 1 wherein: the speed limiting wheel device comprises a first speed limiting gear, a speed limiting gear rod and a second speed limiting gear arranged on the driving shaft;
the first speed limiting gear is arranged on the differential wheel device;
the speed-limiting gear rod comprises a constant speed gear, a reduction gear and an intermediate gear, the constant speed gear is coaxially and fixedly connected with the reduction gear, a rotating shaft is arranged on one side of the constant speed gear, the intermediate gear is arranged on the rotating shaft, and the rotating shaft is rotatably arranged in the mounting groove;
the constant speed gear is meshed with the second speed limiting gear, and the reduction gear is meshed with the first speed limiting gear.
3. A real time torque differential as claimed in claim 2 wherein: the mounting groove comprises two sliding holes, a gear groove is connected between the two sliding holes, two speed limiting gear rods at corresponding positions on the two groups of differential devices are respectively mounted in the two sliding holes through rotating shafts and are meshed and connected through an intermediate gear, and the intermediate gear is arranged in the gear groove.
4. A real time torque differential as claimed in claim 2 wherein: the differential gear device comprises a first bevel gear, a second bevel gear and a planetary gear, wherein the first bevel gear is coaxially and fixedly connected with the driving shaft, the first speed limiting gear is coaxially and fixedly connected to the second bevel gear, the planetary gear is meshed with the first bevel gear and the second bevel gear, and the planetary gear is rotatably connected to the driving rod piece.
5. The real time torque differential according to claim 4, wherein: the first speed limiting gear is an internal gear.
6. The real time torque differential according to claim 4, wherein: and the driving shaft passes through the second bevel gear and is connected to the speed-limiting gear rod.
7. A real time torque differential as defined in claim 1 wherein: the differential device is externally provided with a shell, the shell is fixed on the driving wheel, the driving rod piece is fixed on the shell, and the driving rod piece is fixedly connected with the driving wheel through the shell.
8. A real time torque differential as claimed in claim 2 wherein: the reference circle diameter of the constant speed gear is larger than that of the reduction gear, and the speed-limiting gear rod is used for carrying out differential torque transmission on the driving shaft and limiting the rotation speed ratio of the left wheel and the right wheel of the automobile.
9. A real time torque differential as defined in claim 1 wherein: the mounting groove be equipped with 2 ~ 4, correspond the speed limit wheel device of installing in the mounting groove on same differential gear and be equipped with 2 ~ 4.
10. A real time torque differential as claimed in claim 3 wherein: the rotating shaft is arranged in the sliding hole through a bearing bush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122785870.2U CN216343768U (en) | 2021-11-15 | 2021-11-15 | Real-time torque differential mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122785870.2U CN216343768U (en) | 2021-11-15 | 2021-11-15 | Real-time torque differential mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216343768U true CN216343768U (en) | 2022-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122785870.2U Active CN216343768U (en) | 2021-11-15 | 2021-11-15 | Real-time torque differential mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216343768U (en) |
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2021
- 2021-11-15 CN CN202122785870.2U patent/CN216343768U/en active Active
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