CN115899190A - Gear drive stepless speed change device - Google Patents

Gear drive stepless speed change device Download PDF

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Publication number
CN115899190A
CN115899190A CN202310107772.4A CN202310107772A CN115899190A CN 115899190 A CN115899190 A CN 115899190A CN 202310107772 A CN202310107772 A CN 202310107772A CN 115899190 A CN115899190 A CN 115899190A
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CN
China
Prior art keywords
gear
shaft
torque
point
differential
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Pending
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CN202310107772.4A
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Chinese (zh)
Inventor
陈帅
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Individual
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Individual
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Priority claimed from CN202211091893.6A external-priority patent/CN115370721A/en
Priority claimed from CN202211092029.8A external-priority patent/CN115325123A/en
Application filed by Individual filed Critical Individual
Publication of CN115899190A publication Critical patent/CN115899190A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
    • F16H37/0806—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with a plurality of driving or driven shafts
    • F16H37/0813—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with a plurality of driving or driven shafts with only one input shaft
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
    • F16H2061/6604—Special control features generally applicable to continuously variable gearings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

The invention provides a gear transmission stepless speed change device, and relates to the field of variable speed transmission. The speed change device is used for changing the rotating speed and the torque in the power transmission process and comprises a gearbox, an input shaft, an output shaft, a differential mechanism, a telescopic universal coupling, a torque adjusting disc and a control adjusting mechanism, wherein the input shaft is in transmission connection with the power output device through a clutch, the output shaft is directly externally connected with a driving mechanism, the control adjusting mechanism is used for controlling and adjusting the change of the rotating speed and the torque of the output shaft so as to meet the actual requirement, and only the adjusting mechanism needs to be controlled to linearly and steplessly adjust the optimal output power of the output shaft to meet the actual requirement in the actual operation.

Description

Gear drive stepless speed change device
Technical Field
The invention relates to the technical field of speed change, in particular to a gear transmission stepless speed change device.
Background
At present, automobile transmissions commonly used for fuel vehicles mainly comprise manual gear shifting transmissions (MT) and automatic gear shifting transmissions, and the automatic transmissions are commonly provided with four types: the automatic transmission system is characterized by comprising a hydraulic Automatic Transmission (AT), a mechanical stepless automatic transmission (CVT), an electric control mechanical automatic transmission (AMT) and a double-clutch automatic transmission (DSG/DCT). AT and DSG/DCT are currently in common use in cars. An electrically controlled mechanical automatic transmission (AMT) is a manual transmission, namely, automatic gear shifting is realized by computer control, and the method has the advantages of realizing automation, avoiding manual operation and ensuring convenient driving. The gear shifting device has the disadvantages of polar gear shifting, dynamic frustration, small and fixed speed change range and low fuel economy. The hydraulic Automatic Transmission (AT) structure comprises a hydraulic torque converter, a planetary gear and a hydraulic control system, achieves speed and torque changing through a hydraulic transmission and gear combination mode, and has the advantages that 1, the service life of an engine and a transmission system can be prolonged due to the soft connection of a liquid working medium, 2, the passing performance of an automobile can be improved due to the gradual increase of driving torque, 3, the hydraulic torque converter has good self-adaptability, and 4, the operation is light and convenient. Its disadvantages are complex structure, high cost, complex maintenance technique and low transmission efficiency. For a hydraulic torque converter, the highest efficiency is generally only about 82% -86%, and the fuel economy is low. The mechanical Continuously Variable Transmission (CVT) has the advantages of capability of continuously changing the transmission ratio, simple structure, small size, few parts, no moving and frustrating feeling, high efficiency, improvement on the fuel economy and the dynamic property of the whole vehicle, and improvement on the operation convenience of a driver and the riding comfort of passengers. The disadvantage is that the driving belt is easy to be damaged, and the driving wheel and the driving belt are easy to generate heat at high speed, so that the common small displacement automobile with larger load cannot be born. The double-clutch automatic transmission (DSG/DCT) has the advantages of no power interruption during acceleration, high driving pleasure, higher speed than the traditional manual transmission and outstanding fuel economy. The defects of complex structure, high price and high maintenance cost. Therefore, no continuously variable transmission device capable of overcoming the above defects is applied in practice, and the invention provides a brand-new continuously variable transmission device and a gearbox depending on gear transmission, so as to solve the problems in the prior art.
Disclosure of Invention
The object of the present invention is to provide a geared continuously variable transmission which is able to continue the advantages of the existing transmissions and to improve the drawbacks of the prior art, being an innovation over the existing transmissions.
The embodiment of the invention is realized by the following steps:
in a first aspect, the present invention provides a gear transmission continuously variable transmission, including two different points a and B separated by a fixed distance L on a diameter in a same plane of a rotatable circle of a fixed circular spindle O, the point a being separated by a vertical distance L1 from the circular spindle, the point B being separated by a vertical distance L2 from the circular spindle, L1+ L2= L, and applying forces F having the same magnitude and the same direction to the points a and B, wherein when the vertical distances L1 and L2 from the points a and B to the circular spindle O are equal, the rotatable circle is not rotated according to a lever principle; when the vertical distance L1 between the point A and the circular mandrel O is greater than the vertical distance L2 between the point B and the circular mandrel O, the rotatable circle can rotate towards the point B along the direction of the force F acting on the point A according to the lever principle; when the vertical distance L1 from the point a to the circular axis O is smaller than the vertical distance L2 from the point B to the circular axis O, the rotatable circle rotates to the point a in the direction of the force F acting on the point B according to the lever principle, including:
the differential mechanism comprises a differential mechanism, wherein a semi-axis gear of the differential mechanism coaxially externally connects a torque adjusting disc, the torque adjusting disc is provided with a round spindle O, the torque adjusting disc is provided with a point A and a point B which are equidistant L, the vertical distance between the point A and the round spindle L1, the vertical distance between the point B and the round spindle L2, L1+ L2= L, the point A and the point B can move along the same diameter at equal distance L, an input axis gear is used for driving a main gear of the differential mechanism to rotate, the main gear of the differential mechanism drives two semi-axis gears of the differential mechanism to rotate through a planet gear, wherein one semi-axis gear of the differential mechanism drives the point A of the torque adjusting disc, and the other semi-axis of the differential mechanism drives the point B of the torque adjusting disc; when the vertical distance L1 between the point A and the circular mandrel O is equal to the vertical distance L2 between the point B and the circular mandrel O, the two half-axle gears of the differential rotate synchronously; when the vertical distance L1 between the point A and the circular mandrel O is greater than the vertical distance L2 between the point B and the circular mandrel O, the side gear of the point A is driven to rotate, and the side gear of the point B is driven not to rotate or rotate slowly; when the vertical distance L1 between the point A and the circular mandrel O is smaller than the vertical distance L2 between the point B and the circular mandrel O, the side gear of the point A is driven to rotate or rotate slowly, and the side gear of the point B is driven to rotate, so that the rotation speed of the two half shafts of the differential mechanism can be adjusted by adjusting the positions of the point A and the point B on the diameter of the torque adjusting disc relative to the circular mandrel O.
In a second aspect, the present invention provides a geared continuously variable transmission for adjusting a rotational speed and a torque during power transmission, comprising:
the speed-changing device comprises a speed-changing box, wherein an input shaft is arranged at one end of the speed-changing box, an output shaft is arranged at the other end of the speed-changing box, one end of the input shaft outside the speed-changing box is connected with a power source output shaft, an input shaft gear is arranged at the other end of the input shaft inside the speed-changing box, the input shaft gear is meshed with a differential main gear, the differential main gear drives two differential half-shaft gears through a planetary gear, one of the differential half-shaft gears is fixedly connected with an external torque adjusting disc through the same axle center, the other differential half-shaft gear shaft penetrates through the center of the torque adjusting disc and is connected with a driving gear through a telescopic universal coupling, a radial adjusting device and a guide rail groove are arranged at the diameter position on the torque adjusting disc, a sliding shaft block is arranged close to the center of the torque adjusting disc, the sliding shaft block is respectively provided with a driving gear shaft and an output gear shaft which are connected with the differential half-shaft gears through the telescopic universal coupling, the driving gear is meshed with the output shaft gear, and the radial adjusting device can adjust the sliding shaft block to move along the diameter direction of the guide rail groove so as to adjust the central positions of the driving gear shaft and the torque adjusting disc, and further adjust the output shaft speed.
In an alternative embodiment, one of the two differential side gears is coaxial with a fixed external torque adjusting disc, the other differential side gear shaft passes through the center of the previous differential side gear and is connected with the driving gear through a telescopic universal coupling to directly drive the output shaft gear, and the two differential side gears and the torque adjusting disc are coaxial; the output shaft gear is fixed on the output gear shaft.
In an alternative embodiment, a guide groove and a radial adjusting device are installed at a diameter position on the torque adjusting disk, the guide groove extends in a direction perpendicular to a rotation axis of the torque adjusting disk, the sliding shaft block is rotatably connected with the drive gear shaft and the output gear shaft through bearings, a distance between the drive gear shaft and the output gear shaft is fixed, and the radial adjusting device can adjust the sliding shaft block to drive the drive gear shaft and the output gear shaft to synchronously move along the extension direction of the guide groove so as to adjust positions of the drive gear shaft and the output gear shaft relative to the rotation axis of the torque adjusting disk, thereby adjusting a torque of the drive gear shaft and the output gear shaft relative to the torque adjusting disk.
In an alternative embodiment, when the distance between the output gear on the torque adjusting disk and the rotating axis of the torque adjusting disk is less than or equal to the distance between the driving gear and the rotating axis of the torque adjusting disk, the resistance effect of the two differential half-shaft gears on the planetary gear is the same, the speed ratio of the input shaft and the output shaft is the maximum, and the minimum torque of the rotating speed of the output shaft is the maximum at the moment; when the radial adjusting device adjusts the sliding shaft block to move along the extending direction of the guide rail groove, the output gear shaft is far away from the center of the torque adjusting disc and simultaneously drives the gear shaft to be close to the center of the torque adjusting disc, the resistance of the half shaft gear connected with the torque adjusting disc to the planetary gear is gradually increased, and the planetary gear gradually tends to only drive the half shaft gear connected with the output gear shaft to rotate so as to drive the output shaft to rotate; when the torque adjusting disc adjusts the driving gear shaft to be infinitely close to the center of the torque adjusting disc, the resistance of a half shaft gear connected with the torque adjusting disc to the planetary gear reaches the maximum, the planetary gear only drives the half shaft gear connected with the output gear shaft to rotate, and then the output shaft is driven to rotate, the speed ratio of the input shaft and the output shaft is the minimum, and the maximum torque of the rotating speed of the output shaft is the minimum; the distances of the output gear shaft and the driving gear shaft on the torque adjusting disc from the rotating axis of the torque adjusting disc are adjusted so as to adjust the torque and the rotating speed of the output shaft.
In an optional embodiment, a radial adjusting device is mounted on the torque adjusting disk, and is used for dynamically and linearly adjusting distances between the driving gear shaft and the output gear shaft and the rotation axis of the torque adjusting disk, so as to dynamically and linearly adjust the differential side gear resistance torque connected with the torque adjusting disk and the side gear resistance torque connected with the output shaft, and further adjust the rotation speed of the output shaft.
In an optional embodiment, the device further comprises a gear steering mechanism, wherein the other differential side gear shaft penetrates through the center of the torque adjusting disc and is connected with one end of the telescopic universal coupling through the gear steering mechanism, and the other end of the telescopic universal coupling is connected with the driving gear.
In an alternative embodiment, the gear steering mechanism comprises a connecting gear, an idle gear and a steering gear which are meshed in sequence, wherein the axle of the connecting gear is coaxial and fixedly connected with a differential side shaft gear shaft arranged on the torque adjusting disc, and the steering gear is connected with the driving gear shaft through a telescopic universal coupling.
In an alternative embodiment, the connecting gear, idler gear and steering gear are all bevel gears.
In a third aspect, the present invention provides a geared continuously variable transmission for adjusting a rotational speed and a torque in a power transmission process, comprising:
the transmission comprises a transmission case, an input shaft is arranged at one end of the transmission case, an output shaft is arranged at the other end of the transmission case, one end of the input shaft outside the transmission case is used for connecting a power source output shaft, an input shaft gear is arranged at the other end of the input shaft inside the transmission case, the input shaft gear is meshed with a differential main gear, the differential main gear is meshed with two differential half-shaft gears through planetary gears, a first differential half-shaft gear of the two differential half-shaft gears is coaxially fixed with an external torque adjusting disc, and the axis of the first differential half-shaft gear is coaxially arranged with the rotating axis of the torque adjusting disc; the second differential half shaft gear shaft of two differential half shaft gears passes torque adjusting disk center and connects drive gear through scalable universal joint, be equipped with the guide rail groove on the torque adjusting disk, install radial adjusting device on the torque adjusting disk, radial adjusting device is close to torque adjusting disk center and installs the slip axle piece, the slip axle piece passes through the bearing and connects simultaneously in output gear shaft and the drive gear axle of being connected with second differential half shaft gear, the output gear shaft passes through scalable universal joint and connects the output shaft, drive gear and output shaft gear meshing, the adjustable slip axle piece of radial adjusting device removes in order to adjust drive gear shaft and the relative torque adjusting disk central point of output gear shaft along the extending direction in guide rail groove, and then adjusts the output shaft speed.
The embodiment of the invention has the beneficial effects that:
1. the stepless speed change transmission can be realized, the power is transmitted by the gear, the radial adjusting device is controlled by the adjusting system between the input shaft and the output shaft to adjust the position of a driving shaft which is connected with the two differential half shafts and has unchanged relative distance on a torque adjusting disc on the diameter, so that the resistance torque of the gear of the two differential half shafts is adjusted, the rotating speed of the output shaft can be adjusted at any time during operation, and the stepless speed change can be realized by the stepless step-free spanning of the power transmission.
2. The speed change device has a wide speed change range, can be installed in series and parallel in pure mechanical manufacturing and installation, and has a wide application range and a wide speed change range.
3. The bearing device can bear large torque and has wide application range, and the power of the bearing device is always transmitted by the gear without other friction force transmission accessories, so the bearing device can bear large torque and has wide application range.
4. The transmission device has the advantages of high efficiency, low oil consumption, power transmission through the gear, constant transmission ratio, compact structure, small volume, light weight, high transmission efficiency and low oil consumption.
5. Simple structure, the part is few, and the low later maintenance of fault rate is convenient.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
FIG. 1a is a schematic diagram of a state of the geared continuously variable transmission of the present invention;
FIG. 1b is a schematic diagram of the two-state adjustment of the geared continuously variable transmission of the present invention;
FIG. 1c is a three-state adjustment schematic of the geared continuously variable transmission of the present invention;
fig. 2 is a schematic structural view of a gear transmission continuously variable transmission of embodiment 1 of the invention;
fig. 3 is a control flow schematic diagram of the gear transmission continuously variable transmission of embodiment 1 of the invention;
fig. 4 is a schematic structural view of a geared continuously variable transmission device of embodiment 2 of the present invention.
Icon:
01-an input shaft; 02-input shaft gear; 03-differential main gear; 04-planetary gear; 05-a first differential side gear; 06-a second differential side gear; 07-torque adjustment disc; 08-guide rail grooves; 09-a radial adjustment device; 010-a guide block; 011-sliding shaft block; 012-drive gear; 013 — a first telescopic universal coupling; 014-drive gear shaft; 015-output gear shaft; 016-second telescopic universal coupling; 017-output shaft; 018-a gearbox;
1-an input shaft; 2-input shaft gear; 3-a differential main gear; 4-a planetary gear; 5-a first differential side gear; 6-a second differential side gear; 7-torque adjusting disc; 8-connecting gear; 9-an idler wheel; 10-a steering gear; 11-sliding shaft block; 12-a first telescopic universal coupling; 13-drive gear shaft; 14-output gear shaft; 15-a radial adjustment device; 16-a guide block; 17-sliding shaft block; 18-guide rail groove; 19-a second telescopic universal coupling; 20-an output shaft; 21-gearbox.
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 invention, as claimed, but is merely representative of selected embodiments of the invention. 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 orientations or positional relationships shown in the drawings or orientations or positional relationships that the present product is conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular 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.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the following embodiments, unless otherwise specified, the operation principle of the geared continuously variable transmission apparatus shall be described with reference to the following descriptions:
referring to fig. 1a, 1B and 1c, two different points a and B are separated from each other by a fixed distance L on a diameter of a rotatable circle of a fixed circular spindle O in a same plane, where the point a is separated from the circular spindle by a vertical distance L1, the point B is separated from the circular spindle by a vertical distance L2, and L1+ L2= L, and forces F with equal magnitude and same direction are applied to the point a and the point B, and when the vertical distances L1 and L2 of the point a and the point B from the circular spindle O are equal, the rotatable circle is not rotated according to the lever principle; when the vertical distance L1 between the point A and the circular mandrel O is greater than the vertical distance L2 between the point B and the circular mandrel O, the rotatable circle can rotate towards the point B along the direction of the force F acting on the point A according to the lever principle; when the vertical distance L1 of the point a from the circular central axis O is smaller than the vertical distance L2 of the point B from the circular central axis O, the rotatable circle rotates toward the point a in the direction of the force F acting on the point B according to the principle of leverage.
Example 1
Referring to fig. 1 a-3, the present embodiment provides a geared continuously variable transmission device, which includes a transmission case 018, an input shaft 01 is installed at one end of the transmission case 018, and an output shaft 017 is installed at the other end of the transmission case 018 according to design requirements. The input shaft 01 is connected with a power source output at one end outside a gearbox 018, the input shaft 01 is provided with an input shaft gear 02 in the gearbox 018, the input shaft gear 02 is meshed with a differential main gear 03, wherein the differential main gear 03 can also be called a differential main gear, the differential main gear 03 drives two differential half-shaft gears through planet gears 04, for convenience of description, the two differential half-shaft gears are respectively a first differential half-shaft gear 05 and a second differential half-shaft gear 06, the second differential half-shaft gear 06 coaxially fixes an externally-connected torque adjusting disc 07, the first differential half-shaft gear 05 is connected with one end of a first telescopic universal coupling 013 through the center of the torque adjusting disc 07, and the other end of the first telescopic universal coupling 013 is connected with one end of a driving gear shaft 014 of a driving gear 012. A radial adjusting device 09 and a guide rail groove 08 are arranged at the diameter position of one end, close to an output shaft, of the torque adjusting disc 07, a sliding shaft block 011 is arranged at the position, close to the center of the torque adjusting disc, of the radial adjusting device 09, and the sliding shaft block 011 can be adjusted by the radial adjusting device 09 to move along the diameter direction of the guide rail groove 08. The other ends of the output gear shaft 015 and the drive gear shaft 014 of the drive gear 012 are mounted equidistantly on the slide shaft block 011 through bearings, and the output gear shaft 015 is connected to the output shaft 017 through a second telescopic universal joint 016. That is, the output gear shaft 015 and the drive gear shaft 014 are disposed in parallel and at an interval, and the interval therebetween is always kept equal and does not change, for example, the interval therebetween is always L, and the output gear shaft 015 and the drive gear shaft 014 are synchronously moved by the sliding shaft block 011, thereby adjusting the distance L1 between the output gear shaft 015 and the rotational axis of the torque adjustment disk 07 and the distance L2 between the drive gear shaft 014 and the rotational axis of the torque adjustment disk 07, and L1+ L2= L during the adjustment position.
In the present embodiment, it should be understood that when the input shaft gear 02 drives the differential main gear 03 to rotate, and the differential main gear 03 drives the first differential side gear 05 and the second differential side gear 06 to rotate through the planet gears 04, as is understood from the differential characteristics, when the resistance force acting on the planet gears 04 from the first differential side gear 05 is equal to the resistance force acting on the planet gears 04 from the second differential side gear 06, the planet gears 04 drive the first differential side gear 05 and the second differential side gear 06 to rotate synchronously. When the resistance of the first differential side gear 05 to the planet gear 04 is greater than the resistance of the second differential side gear 06 to the planet gear 04, the first differential side gear 05 does not rotate, and the planet gear 04 makes rolling motion to the first differential side gear 05 and drives only the second differential side gear 06 to rotate. When the resistance of the first differential side gear 05 acting on the planet gear 04 is smaller than the resistance of the second differential side gear 06 acting on the planet gear 04, the second differential side gear 06 does not rotate, and the planet gear 04 makes rolling motion to the second differential side gear 06 and drives only the first differential side gear 05 to rotate. Meanwhile, a radial adjusting device 09 mounted on the torque adjustment disc 07 can adjust the position of a sliding axle block 011 provided with an output gear axle 015 and a driving gear axle 014, so that the sliding axle block 011 can move along a guide rail groove 08 in the extending direction of the guide rail groove, wherein the extending direction of the guide rail groove 08 is perpendicular to the rotation axis of the torque adjustment disc 07, i.e., perpendicular to the center line of the torque adjustment disc 07, when the distance between the output gear axle 015 and the center of the torque adjustment disc 07 is equal to the distance between the driving gear axle 014 and the center of the torque adjustment disc 07, i.e., L1= L2, the resistances of the first differential side gear 05 and the second differential side gear 06 to the planet gears 04 are equal, the speed ratio of the input shaft 01 and the output shaft 017 is maximum, and the minimum rotation speed of the output shaft 017 and the maximum torque are achieved at this time. The radial adjusting device 09 adjusts the sliding shaft block 011 to move along the guide rail groove 08 in the diameter direction, the output shaft gear shaft 015 is gradually far away from the rotating axis of the torque adjusting disc 07 disc, and simultaneously the gear shaft 014 is driven to gradually approach the center of the torque adjusting disc 07, namely L1 is larger than L2, the resistance of the second differential half-shaft gear 06 connected with the torque adjusting disc 07 to the planet gear 04 is increased, and the planet gear 04 gradually drives only the first differential half-shaft gear 05 to rotate, so that the output shaft 017 is driven to rotate; when the disk of the torque adjusting disk 07 adjusts the driving gear shaft 014 to be infinitely close to the center of the torque adjusting disk 07, the resistance of the second differential side gear 06 connected with the torque adjusting disk 07 to the planet gear 04 is maximum, the planet gear 04 only drives the first differential side gear 05 to rotate, and then drives the output shaft 017 to rotate, the speed ratio of the input shaft 01 and the output shaft 017 is minimum at the moment, and the rotating speed and the maximum torque of the output shaft 017 are minimum at the moment. Therefore, the torque and the rotation speed of the output shaft 017 can be adjusted by adjusting the relative positions of the output shaft gear shaft 015 and the drive gear shaft 014 on the torque adjustment disk 07 to the torque distance from the rotation axis of the adjustment disk 07.
The drive gear 012 is a ring gear.
Optionally, a guide block 010 is further installed in the guide rail groove 08, and the guide block 010 drives the sliding shaft block 011 to slide in the guide rail groove in a reciprocating manner.
Example 2
Referring to fig. 1 and 4, the present embodiment also provides a geared continuously variable transmission device, which includes a transmission case 21, an input shaft 1 is installed at one end of the transmission case 21 according to design requirements, and an output shaft 20 is installed at the other end of the transmission case 21. The end of an input shaft 1 outside a gearbox 21 is connected with a power source for outputting, the input shaft 1 is provided with an input shaft gear 2 in the gearbox 21, the input shaft gear 2 is meshed with a differential main gear 3, the differential main gear 3 drives two differential half shaft gears through a planetary gear 4, for convenience of description, the two differential half shaft gears are respectively a first differential half shaft gear 5 and a second differential half shaft gear 6, wherein the second differential half shaft gear 6 is coaxially fixed with an external torque adjusting disc 7, an idler shaft 11 and a steering gear 10 are fixedly arranged in the internal diameter position of the torque adjusting disc 7, and an idler wheel 9 is arranged on the idler shaft 11. The shaft end of the steering gear 10 is connected with one end of a first telescopic universal coupling 12. The other end of the torque adjusting disk 7 is provided with a radial adjusting device 15 and a guide rail groove 18, the radial adjusting device 15 is provided with a sliding shaft block 17 close to the center of the torque adjusting disk 7, the sliding shaft block 17 is provided with an output gear shaft 14 and a driving gear shaft 13 at equal distance through a bearing, and the radial adjusting device 15 can adjust the sliding shaft block 17 to move along the diameter direction of the guide rail groove 18. That is, the output gear shaft 14 and the drive gear shaft 13 are arranged in parallel and at an interval, and the interval therebetween is always kept equal and does not change, for example, the interval therebetween is always L, and the output gear shaft 14 and the drive gear shaft 13 are synchronously moved by the sliding shaft block 11, so that the distance L1 between the output gear shaft 14 and the rotation axis of the torque adjustment disk 7 and the distance L2 between the drive gear shaft 13 and the rotation axis of the torque adjustment disk 7 are adjusted, and L1+ L2= L during the adjustment position. The drive gear shaft 13 is connected to the other end of the first telescopic universal joint 12. The end of the output gear shaft 14 is connected with one end of a second telescopic universal coupling 19, and the other end of the second telescopic universal coupling 19 is connected with an output shaft 20. The extension shaft of the first differential side gear 5 is centrally mounted with a connecting gear 8 through a torque adjusting disk 7, the connecting gear 8 engaging an idler gear 9, the idler gear 9 engaging a steering gear 10.
In the present embodiment, it should be noted that, when the input shaft gear 2 drives the differential main gear 3 to rotate, and the differential main gear 3 drives the first differential side gear 5 and the second differential side gear 6 to rotate through the planet gears 4, as is known from the differential characteristics, when the resistance given to the planet gears 4 by the first differential side gear 5 is equal to the resistance given to the planet gears 4 by the second differential side gear 6, the planet gears 4 drive the first differential side gear 5 and the second differential side gear 6 to rotate synchronously. When the resistance of the first differential side gear 5 to the planet gear 4 is greater than the resistance of the second differential side gear 6 to the planet gear 4, the first differential side gear 5 does not rotate, and the planet gear 4 makes rolling motion to the first differential side gear 5 and drives only the second differential side gear 6 to rotate. When the resistance of the first differential side gear 5 to the planet gear 4 is less than the resistance of the second differential side gear 6 to the planet gear 4, the second differential side gear 6 does not rotate, and the planet gear 4 makes rolling motion to the second differential side gear 6 and drives only the first differential side gear 5 to rotate. The second step is as follows: the radial adjusting device 15 mounted on the torque adjusting disk 7 can adjust the sliding shaft block 17 mounted with the output gear shaft 14 and the driving gear shaft 13 to move along the guide rail groove 18 in the diameter direction, when the distance between the output gear shaft 14 and the center of the torque adjusting disk 7 is equal to the distance between the driving gear shaft 13 and the center of the torque adjusting disk 7, namely L1= L2, the resistance of the first differential side gear 5 and the second differential side gear 6 to the planetary gear 4 is equal, the speed ratio of the input shaft 1 and the output shaft 20 is maximum, and the rotating speed of the output shaft 20 is the minimum and the torque is the maximum. The radial adjusting device 15 adjusts the sliding shaft block 17 to move along the guide rail groove 18 in the diameter direction, the output shaft gear 14 is gradually far away from the center of the torque adjusting disc 7 and the driving gear shaft 13 is gradually close to the center of the torque adjusting disc 7, namely L1 is larger than L2, the resistance of the second differential half-shaft gear 6 connected with the torque adjusting disc 7 to the planetary gear 4 is increased, the planetary gear 4 gradually drives only the first differential half-shaft gear 5 to rotate, and then drives the output shaft 20 to rotate, when the torque adjusting disc 7 adjusts the driving gear shaft 13 to be infinitely close to the center of the torque adjusting disc 7, the resistance of the second differential half-shaft gear 6 connected with the torque adjusting disc 7 to the planetary gear 4 is maximum, the planetary gear 4 drives only the first half-shaft gear 5 to rotate, and then drives the output shaft 20 to rotate, at the moment, the speed ratio of the input shaft 1 and the output shaft 20 is minimum, and at the moment, the maximum torque of the rotating speed of the output shaft 20 is minimum. Therefore, the torque and the rotating speed of the output shaft 20 can be adjusted by adjusting the positions of the output shaft gear 14 shaft and the driving gear shaft 13 on the torque adjusting disc 7 relative to the torque distance from the rotating axis of the adjusting disc 7.
It should be understood that the gears on the drive gear shaft 13 and the gears on the output gear shaft 14 in this embodiment are in external mesh.
Optionally, a guide block 16 is further installed in the guide rail groove 18, and the guide block 16 drives the sliding shaft block 17 to slide back and forth in the guide rail groove.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A gear transmission stepless speed change device is characterized in that two different points A and B which are separated from a fixed distance L on the diameter in the same plane of a rotatable circle of a fixed circular mandrel O are provided, the point A is separated from the circular mandrel by a vertical distance L1, the point B is separated from the circular mandrel by a vertical distance L2, and L1+ L2= L, and meanwhile, forces F which are equal in size and direction are applied to the point A and the point B, and when the vertical distance L1 and the vertical distance L2 of the point A and the circular mandrel O are equal, the rotatable circle is not rotated according to the lever principle; when the vertical distance L1 between the point A and the circular mandrel O is greater than the vertical distance L2 between the point B and the circular mandrel O, the rotatable circle can rotate towards the point B along the direction of the force F acting on the point A according to the lever principle; when the vertical distance L1 from the point a to the circular axis O is smaller than the vertical distance L2 from the point B to the circular axis O, the rotatable circle rotates to the point a in the direction of the force F acting on the point B according to the lever principle, which is characterized by comprising:
the differential mechanism comprises a differential mechanism, wherein a semi-axis gear of the differential mechanism coaxially externally connects a torque adjusting disc, the torque adjusting disc is provided with a round spindle O, the torque adjusting disc is provided with a point A and a point B which are equidistant L, the vertical distance between the point A and the round spindle L1, the vertical distance between the point B and the round spindle L2, L1+ L2= L, the point A and the point B can move along the same diameter at equal distance L, an input axis gear is used for driving a main gear of the differential mechanism to rotate, the main gear of the differential mechanism drives two semi-axis gears of the differential mechanism to rotate through a planet gear, wherein one semi-axis gear of the differential mechanism drives the point A of the torque adjusting disc, and the other semi-axis of the differential mechanism drives the point B of the torque adjusting disc; when the vertical distance L1 between the point A and the circular mandrel O is equal to the vertical distance L2 between the point B and the circular mandrel O, the two half-axle gears of the differential rotate synchronously; when the vertical distance L1 between the point A and the circular mandrel O is greater than the vertical distance L2 between the point B and the circular mandrel O, the side gear of the point A is driven to rotate, and the side gear of the point B is driven not to rotate or rotate slowly; when the vertical distance L1 between the point A and the circular mandrel O is smaller than the vertical distance L2 between the point B and the circular mandrel O, the side gear of the point A is driven to rotate or rotate slowly, and the side gear of the point B is driven to rotate, so that the rotation speed of the two half shafts of the differential mechanism can be adjusted by adjusting the positions of the point A and the point B on the diameter of the torque adjusting disc relative to the circular mandrel O.
2. A geared continuously variable transmission for regulating rotational speed and torque during power transmission, comprising:
the speed-changing device comprises a speed-changing box, wherein an input shaft is arranged at one end of the speed-changing box, an output shaft is arranged at the other end of the speed-changing box, one end of the input shaft outside the speed-changing box is connected with a power source output shaft, an input shaft gear is arranged at the other end of the input shaft inside the speed-changing box, the input shaft gear is meshed with a differential main gear, the differential main gear drives two differential half-shaft gears through a planetary gear, one of the differential half-shaft gears is fixedly connected with an external torque adjusting disc through the same axle center, the other differential half-shaft gear shaft penetrates through the center of the torque adjusting disc and is connected with a driving gear through a telescopic universal coupling, a radial adjusting device and a guide rail groove are arranged at the diameter position on the torque adjusting disc, a sliding shaft block is arranged close to the center of the torque adjusting disc, the sliding shaft block is respectively provided with a driving gear shaft and an output gear shaft which are connected with the differential half-shaft gears through the telescopic universal coupling, the driving gear is meshed with the output shaft gear, and the radial adjusting device can adjust the sliding shaft block to move along the diameter direction of the guide rail groove so as to adjust the central positions of the driving gear shaft and the torque adjusting disc, and further adjust the output shaft speed.
3. The geared continuously variable transmission of claim 2, wherein one of the two differential side gears is concentric with the externally connected torque adjustment disk, and the other differential side gear shaft passes through the center of the previous differential side gear and is connected to the drive gear via a telescopic universal coupling to directly drive the output shaft gear, the two differential side gears and the torque adjustment disk being concentric; the output shaft gear is fixed on the output gear shaft.
4. The gear transmission stepless speed change device according to claim 3, wherein a guide rail groove and a radial adjusting device are installed on the torque adjusting disc at a diameter position, the guide rail groove extends in a direction perpendicular to the rotation axis of the torque adjusting disc, the sliding shaft block is rotatably connected with the drive gear shaft and the output gear shaft through bearings, the distance between the drive gear shaft and the output gear shaft is fixed, and the radial adjusting device can adjust the position of the drive gear shaft and the output gear shaft relative to the rotation axis of the torque adjusting disc by driving the drive gear shaft and the output gear shaft to synchronously move along the extension direction of the guide rail groove, so as to adjust the rotation torque of the drive gear shaft and the output gear shaft relative to the rotation axis of the torque adjusting disc.
5. The geared continuously variable transmission of claim 2, wherein when the distance between the output gear on the torque adjustment disk and the rotational axis of the torque adjustment disk is less than or equal to the distance between the drive gear and the rotational axis of the torque adjustment disk, the two differential side gears have the same effect on the resistance of the planetary gears, the input shaft and the output shaft have the highest speed ratio, and the output shaft has the lowest rotational speed and the highest torque; when the radial adjusting device adjusts the sliding shaft block to move along the extending direction of the guide rail groove, the output gear shaft is far away from the center of the torque adjusting disc and simultaneously drives the gear shaft to be close to the center of the torque adjusting disc, the resistance of the half shaft gear connected with the torque adjusting disc to the planetary gear is gradually increased, and the planetary gear gradually tends to only drive the half shaft gear connected with the output gear shaft to rotate so as to drive the output shaft to rotate; when the torque adjusting disc adjusts the driving gear shaft to be infinitely close to the center of the torque adjusting disc, the resistance of a half shaft gear connected with the torque adjusting disc to the planetary gear reaches the maximum, the planetary gear only drives the half shaft gear connected with the output gear shaft to rotate, and then the output shaft is driven to rotate, the speed ratio of the input shaft and the output shaft is the minimum, and the maximum torque of the rotating speed of the output shaft is the minimum; the distances of the output gear shaft and the driving gear shaft on the torque adjusting disc relative to the rotating axis of the torque adjusting disc are adjusted to adjust the torque and the rotating speed of the output shaft.
6. The gear-driven continuously variable transmission device according to any one of claims 2 to 5, wherein a radial adjusting device is mounted on the torque adjustment disc for dynamically linearly adjusting the distances between the drive gear shaft and the output gear shaft and the rotation axis of the torque adjustment disc, to dynamically linearly adjust the differential side gear resistance torque connected to the torque adjustment disc and the side gear resistance torque connected to the output shaft, to thereby adjust the rotation speed of the output shaft, and when the rotation speed of the input shaft is at a certain value, the drive torque of the input shaft to the output shaft is increased to decrease the rotation speed of the output shaft when the center distance between the drive gear shaft and the torque adjustment disc is increased and the center distance between the output gear shaft and the torque adjustment disc is decreased, and the drive torque of the input shaft to the output shaft is decreased to increase the rotation speed of the output shaft when the center distance between the drive gear shaft and the torque adjustment disc is decreased, to thereby achieve purely physical linear stepless adjustment.
7. The geared continuously variable transmission of claim 2 further comprising a gear steering mechanism, said other differential side gear shaft passing through the center of the torque adjusting disk and through the gear steering mechanism to one end of a retractable universal joint, said other end of the retractable universal joint being connected to the drive gear.
8. The geared continuously variable transmission of claim 7, wherein the gear steering mechanism includes a connecting gear, an idler gear, and a steering gear that mesh in sequence, the axle of the connecting gear being coaxial with and fixedly connected to a differential side gear shaft provided on the torque adjusting disk, the steering gear being connected to the drive gear shaft by a telescopic universal joint.
9. The geared continuously variable transmission of claim 8, wherein the connecting gear, idler gear and steering gear are bevel gears.
10. A geared continuously variable transmission for regulating rotational speed and torque during power transmission, comprising:
the transmission comprises a transmission case, an input shaft is arranged at one end of the transmission case, an output shaft is arranged at the other end of the transmission case, one end of the input shaft outside the transmission case is used for connecting a power source output shaft, an input shaft gear is arranged at the other end of the input shaft inside the transmission case, the input shaft gear is meshed with a differential main gear, the differential main gear is meshed with two differential half shaft gears through a planetary gear, a first differential half shaft gear of the two differential half shaft gears is coaxially fixed with an externally-connected torque adjusting disc, and the axis of the first differential half shaft gear is coaxially arranged with the rotating axis of the torque adjusting disc; the second differential half shaft gear shaft of two differential half shaft gears passes torque adjusting disk center and connects drive gear through scalable universal joint, be equipped with the guide rail groove on the torque adjusting disk, install radial adjusting device on the torque adjusting disk, radial adjusting device is close to torque adjusting disk center and installs the slip axle piece, the slip axle piece passes through the bearing and connects simultaneously in output gear shaft and the drive gear axle of being connected with second differential half shaft gear, the output gear shaft passes through scalable universal joint and connects the output shaft, drive gear and output shaft gear meshing, the adjustable slip axle piece of radial adjusting device removes in order to adjust drive gear shaft and the relative torque adjusting disk central point of output gear shaft along the extending direction in guide rail groove, and then adjusts the output shaft speed.
CN202310107772.4A 2022-09-07 2023-02-14 Gear drive stepless speed change device Pending CN115899190A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202211091893.6A CN115370721A (en) 2022-09-07 2022-09-07 Gear transmission speed changing device and gearbox
CN2022110918936 2022-09-07
CN2022110920298 2022-09-07
CN202211092029.8A CN115325123A (en) 2022-09-07 2022-09-07 Gear transmission speed change device and gearbox

Publications (1)

Publication Number Publication Date
CN115899190A true CN115899190A (en) 2023-04-04

Family

ID=86471279

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310107772.4A Pending CN115899190A (en) 2022-09-07 2023-02-14 Gear drive stepless speed change device

Country Status (1)

Country Link
CN (1) CN115899190A (en)

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