CN112211971A - Double-pulley controllable hydraulic arm stepless speed changer and automobile - Google Patents
Double-pulley controllable hydraulic arm stepless speed changer and automobile Download PDFInfo
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- CN112211971A CN112211971A CN202010995615.8A CN202010995615A CN112211971A CN 112211971 A CN112211971 A CN 112211971A CN 202010995615 A CN202010995615 A CN 202010995615A CN 112211971 A CN112211971 A CN 112211971A
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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
- F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
- F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
- F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
- F16H9/10—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley provided with radially-actuatable elements carrying the belt
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/52—Pulleys or friction discs of adjustable construction
- F16H55/54—Pulleys or friction discs of adjustable construction of which the bearing parts are radially adjustable
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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
- 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
- F16H63/3023—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by fluid pressure
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Abstract
The invention relates to the technical field of vehicle power equipment, in particular to a double-pulley controllable hydraulic arm continuously variable transmission and an automobile. The continuously variable transmission includes: the driving wheel set comprises a driving wheel, and the driving wheel comprises a first connecting disc, a plurality of first telescopic arms and a plurality of first auxiliary wheels; the plurality of first telescopic arms are distributed along the circumferential direction of the first connecting disc and can be telescopic along the radial direction of the first connecting disc; the driven wheel set comprises a driven wheel, the driven wheel comprises a second connecting disc, a plurality of second telescopic arms and a plurality of second auxiliary wheels, and the plurality of second telescopic arms are distributed along the circumferential direction of the second connecting disc and can be telescopic along the radial direction of the second connecting disc; and the transmission belt is wound around the first auxiliary wheel and the second auxiliary wheel. The speed change range in the embodiment of the invention comes from the change of the inner diameters of the two pulleys, and the speed change range of the transmission is increased because the first telescopic arm and the second telescopic arm attached to the driving wheel and the driven wheel are subjected to telescopic change.
Description
Technical Field
The invention relates to the technical field of vehicle power equipment, in particular to a double-pulley controllable hydraulic arm continuously variable transmission and an automobile.
Background
The stepless speed changer is an ideal Transmission system of the automobile, and has been a pursuit target of human beings since the birth of the automobile, the stepless speed change Transmission (CVT for short) has the advantage that the common stepped speed change cannot be compared, the engine of the automobile can be controlled to always run in an optimal target running area, the economy of the automobile is obviously improved, the dynamic property of the automobile is improved, the gear shift impact of the automobile can be reduced, and the labor intensity of a driver can be reduced.
In the existing stepless speed changer, a metal belt and a roller with variable radius are mostly used for transmitting power, and the change of the gear ratio is achieved through the change of the radius of an active roller and the radius of a passive roller. The transmission belt and the ratchet wheel with variable groove width are adopted for power transmission, namely when the groove width of the ratchet wheel is changed, the contact radius of the driving wheel and the transmission belt on the driven wheel is correspondingly changed for speed change, and the transmission belt generally adopts a rubber belt, a metal chain and the like. However, the continuously variable transmission in the prior art only has one pulley combination, and the pulley combination is a driving pulley and a driving pulley, and the speed change range only depends on the driving pulley, so that the speed change range of the traditional transmission only depends on the driving pulley, and the continuously variable transmission has the advantages of small speed change range, complex structure and high maintenance cost.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides the double-pulley controllable hydraulic arm continuously variable transmission, which adopts two pulleys with variable inner diameters and increases the speed change range of the continuously variable transmission.
In order to achieve the above technical object, one aspect of the present invention provides a dual-pulley controllable hydraulic arm continuously variable transmission, including a driving pulley set, a driven pulley set, and a transmission belt drivingly connecting the driving pulley set and the driven pulley set, wherein: the driving wheel set comprises a driving wheel, the driving wheel comprises a first connecting disc, a plurality of first telescopic arms and a plurality of first auxiliary wheels, the first auxiliary wheels correspond to the first telescopic arms one by one, the first end of each first telescopic arm is connected with the first connecting disc, and the second end of each first telescopic arm extends along the radial direction of the first connecting disc and is connected with the first auxiliary wheel; the plurality of first telescopic arms are distributed along the circumferential direction of the first connecting disc and can be telescopic along the radial direction of the first connecting disc; the driven wheel set comprises a driven wheel, the driven wheel comprises a second connecting disc, a plurality of second telescopic arms and a plurality of second auxiliary wheels, the second auxiliary wheels correspond to the second telescopic arms one by one, the first end of each second telescopic arm is connected with the second connecting disc, and the second end of each second telescopic arm extends along the radial direction of the second connecting disc and is connected with the second auxiliary wheel; the plurality of second telescopic arms are distributed along the circumferential direction of the second connecting disc and can be telescopic along the radial direction of the second connecting disc; and the drive belt passes around the first auxiliary wheel and the second auxiliary wheel.
Further, first flexible arm with the flexible arm of second is the hydraulic pressure arm, first connection pad include with a plurality of first hydraulic pressure grease chambeies of first flexible arm one-to-one, the second connection pad include with a plurality of second hydraulic pressure grease chambeies of the flexible arm one-to-one of second.
Further, the continuously variable transmission further includes:
the first hydraulic pump is used for supplying oil to the first hydraulic oil chamber and communicated with the first hydraulic oil chamber;
and the first hydraulic control unit is connected with the first hydraulic pump and the first hydraulic oil chamber, and is arranged to control the oil supply state of the first hydraulic pump according to a control signal so as to control the first telescopic arm to stretch along the radial direction of the first connecting disc.
Further, the continuously variable transmission further includes:
the second hydraulic pump is used for supplying oil to the second hydraulic oil chamber and communicated with the second hydraulic oil chamber;
and the second hydraulic control unit is connected with the second hydraulic pump and the second hydraulic oil chamber and is used for controlling the oil supply state of the second hydraulic pump according to a control signal so as to control the second telescopic arm to stretch along the radial direction of the second connecting disc.
Further, the continuously variable transmission further includes an adjusting mechanism disposed between the driving wheel set and the driven wheel set and used for adjusting a tightness state of the transmission belt, and the adjusting mechanism includes:
the first adjusting wheel is arranged on the inner side of the transmission belt and is in meshed connection with the transmission belt;
the second adjusting wheel is arranged at a certain distance from the first adjusting wheel and positioned on the outer side of the transmission belt, and the second adjusting wheel is meshed with the transmission belt;
and the first telescopic piece is in transmission connection with the second adjusting wheel and is used for driving the second adjusting wheel to move towards or back to the first adjusting wheel.
Further, the adjustment mechanism further comprises:
the third adjusting wheel is positioned on the outer side of the transmission belt and is in meshed connection with the transmission belt;
the fourth adjusting wheel is positioned on the inner side of the transmission belt and is in meshed connection with the transmission belt;
and the second telescopic piece is in transmission connection with the third adjusting wheel and is used for driving the third adjusting wheel to move towards or back to the fourth adjusting wheel.
Further, the first auxiliary wheel and the second auxiliary wheel are both connected with a buffer spring.
Further, an inner tooth part is arranged on the inner side wall of the transmission belt, the first auxiliary wheel and the second auxiliary wheel are gears, and the gears are meshed with the inner tooth part.
Further, an outer tooth portion is arranged on the outer side wall of the transmission belt, the first adjusting wheel and the fourth adjusting wheel are gears meshed with the inner tooth portion, and the second adjusting wheel and the third adjusting wheel are gears meshed with the outer tooth portion.
The invention also provides a vehicle which comprises the double-pulley controllable hydraulic arm continuously variable transmission in any one technical scheme.
One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:
1. the double-pulley controllable hydraulic arm stepless transmission in the embodiment of the invention is provided with two pulleys with variable inner diameters, namely the driving wheel and the driven wheel, the speed change range is from the change of the inner diameters of the two pulleys, and the speed change range of the transmission is increased because the first telescopic arm and the second telescopic arm attached to the driving wheel and the driven wheel can be simultaneously changed in a telescopic manner.
2. In the embodiment of the invention, the first adjusting wheel, the second adjusting wheel, the third adjusting wheel and the fourth adjusting wheel are stretched through the first stretching member and the second stretching member and are always kept attached to the transmission belt, so that the speed of the transmission belt can be quickly and stably reduced to meet the use requirement, meanwhile, the abrasion to the transmission belt can be greatly reduced, the transmission belt (steel chain) is prevented from being strongly stretched at a closed position in the stretching process of the first stretching arm and the second stretching arm, the abrasion to the transmission belt is reduced, the service life of the transmission belt is prolonged, the cost caused by the abrasion of the steel chain is saved, and the long-distance market benefit is achieved.
3. The buffer spring in the embodiment of the invention enables all the attached first auxiliary wheels and second auxiliary wheels to vibrate in a small range, reduces the impact when the first auxiliary wheels and the second auxiliary wheels are engaged with the transmission belt and prevents the tooth jumping when the first auxiliary wheels and the second auxiliary wheels are engaged.
4. In the embodiment of the invention, the reducing of the driving wheel and the driven wheel adopts hydraulic transmission, the hydraulic transmission has the unique advantages that other transmission modes do not have, the hydraulic transmission has inertia, small action, sensitive braking, quick speed, stable movement, easy realization of stepless speed change and great speed regulation ratio.
Drawings
FIG. 1 is a schematic structural diagram of a continuously variable transmission in an embodiment of the present invention, wherein the continuously variable transmission is in an operating state at maximum speed;
FIG. 2 is a schematic structural diagram of a driving pulley set according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 1;
FIG. 4 is a partially enlarged view of part B in the embodiment of the present invention;
FIG. 5 is a front view of an adjustment mechanism in an embodiment of the present invention;
FIG. 6 is a top plan view of a continuously variable transmission in accordance with an embodiment of the present invention;
FIG. 7 is a partial perspective view of an adjustment mechanism according to an embodiment of the present invention;
fig. 8 is a schematic structural view of a continuously variable transmission in an embodiment of the present invention, in which the continuously variable transmission is in a decelerating state.
Description of the reference numerals
100-driving wheel group, 101-first connecting disc, 102-first telescopic arm, 103-first auxiliary wheel, 104-driving shaft, 105-bearing, 106-first hydraulic oil chamber, 107-first oil inlet and outlet, 108-second oil inlet and outlet, 109-buffer spring, 110-fixing plate, 111-key groove, 112-piston and 113-piston rod;
200-a driven wheel group, 201-a second connecting disc, 202-a second telescopic arm, 203-a second auxiliary wheel, 204-a driven shaft;
300-a transmission belt;
400-an adjusting mechanism, 401-a first adjusting wheel, 402-a second adjusting wheel, 403-a first telescopic piece, 404-a third adjusting wheel, 405-a fourth adjusting wheel, 406-a second telescopic piece, 407-a connecting shaft, 408-a first fixing rod, 409-a second fixing rod, 410-a first transmission shaft, 411-a second transmission shaft, 412-a third transmission shaft, 413-a fourth transmission shaft.
Detailed Description
Other objects and advantages of the present invention will become apparent by the following explanation of preferred embodiments of the present invention.
Fig. 1-8 show a schematic structural diagram of a double-pulley controllable hydraulic arm continuously variable transmission provided by the invention. For convenience of description, the terms "upper", "lower", "left" and "right" are used in the same direction as the upper, lower, left and right directions of the drawings, but do not limit the structure of the present invention. The arrows in fig. 6 indicate a specific orientation of the front, where the opposite front is the rear.
[ EXAMPLES one ]
As shown in fig. 1 to 8, a dual pulley controllable hydraulic arm continuously variable transmission is characterized by comprising a driving pulley set 100, a driven pulley set 200 and a transmission belt 300 for driving and connecting the driving pulley set 100 and the driven pulley set 200, wherein: the driving pulley set 100 includes a driving pulley and a driving shaft 104 for transmitting a driving force to the driving pulley, the driving pulley includes a first connecting plate 101, a plurality of first telescopic arms 102 (e.g., 6), and a plurality of first auxiliary wheels 103 corresponding to the first telescopic arms 102 one by one, a first end of the first telescopic arm 102 is connected to the first connecting plate 101, and a second end of the first telescopic arm 102 extends in a radial direction of the first connecting plate 101 and is connected to the first auxiliary wheels 103; a plurality of first telescopic arms 102 are distributed along the circumferential direction of the first connecting disc 101 and can be telescopic along the radial direction of the first connecting disc 101; the driven wheel set 200 includes a driven wheel and a driven shaft 204 for transmitting a driving force to the driven wheel, the driven wheel includes a second connecting disc 201, a plurality of second telescopic arms 202 (for example, 6) and a plurality of second auxiliary wheels 203 corresponding to the second telescopic arms 202 one by one, a first end of the second telescopic arm 202 is connected with the second connecting disc 201, a second end extends along a radial direction of the second connecting disc 201 and is connected with the second auxiliary wheels 203; a plurality of second telescopic arms 202 are distributed along the circumferential direction of the second connecting disc 201 and can be telescopic along the radial direction of the second connecting disc 201; and the driving belt 300 is wound around the first auxiliary wheel 103 and the second auxiliary wheel 203. The driving shaft 104 penetrates through the center of the first connecting disc 101, the driven shaft 204 penetrates through the center of the second connecting disc 201, and bearings 105 are arranged at the joint of the driving shaft 104 and the first connecting disc 101 and the joint of the driven shaft 204 and the second connecting disc 201, so that the first connecting disc 101 and the second connecting disc 201 can rotate.
In the embodiment of the invention, the double-pulley controllable hydraulic arm stepless transmission is provided with two pulleys with variable inner diameters, namely a driving pulley and a driven pulley, the speed change range is from the change of the inner diameters of the two pulleys, and the first telescopic arm 102 and the second telescopic arm 202 attached to the driving pulley and the driven pulley can be simultaneously changed in a telescopic manner, so that the speed change range of the transmission is increased.
As shown in fig. 1 to 3, the first telescopic arm 102 and the second telescopic arm 202 are both hydraulic arms, the first connection disc 101 includes a plurality of first hydraulic oil chambers 106 corresponding to the first telescopic arm 102 one to one, and the second connection disc 201 includes a plurality of second hydraulic oil chambers corresponding to the second telescopic arm 202 one to one. Specifically, the hydraulic arm comprises a piston 112 and a telescopic piston rod 113 connected with the piston 112, the other end of the piston rod 113 is connected with the fixed plate 110, the first auxiliary wheel 103 is rotatably connected with the fixed plate 110, and the connection mode can be that a shaft and a key are matched and connected; the second auxiliary wheel 203 and the second telescopic arm 202 are assembled in the same manner or structure as the first auxiliary wheel 103.
The continuously variable transmission further includes: a first hydraulic pump for supplying oil into the first hydraulic oil chamber 106, the first hydraulic pump being communicated with the first hydraulic oil chamber 106; and a first hydraulic control unit connected to the first hydraulic pump and the first hydraulic oil chamber 106, the first hydraulic control unit being configured to control an oil supply state of the first hydraulic pump according to a control signal to control the first telescopic arm 102 to be telescopic in the radial direction of the first connecting disc 101. The first telescopic arm 102 is controlled to be telescopic through hydraulic pressure, the first hydraulic control unit may include an electromagnetic valve for controlling the first oil inlet/outlet 107 and the second oil inlet/outlet 108, a controller for controlling the working state of the electromagnetic valve according to a control signal, and the like, and the first hydraulic control unit receives the control signal and controls the oil supply state of the first oil inlet/outlet 107 and the second oil inlet/outlet 108 according to the control signal to control the telescopic movement of the piston rod 113, that is, the first telescopic arm 102 moves along the radial direction of the first connecting disc 101, so as to change the diameter of the driving wheel, thereby realizing stepless speed change. The plurality of first telescopic booms 102 are connected with the plurality of first hydraulic oil chambers 106 corresponding to one another, and the plurality of first telescopic booms 102 are controlled to work independently so as to be telescopic in different lengths, and the speed change range is further enlarged.
The continuously variable transmission further includes: the second hydraulic pump is used for supplying oil to the second hydraulic oil chamber and communicated with the second hydraulic oil chamber; and a second hydraulic control unit connected to the second hydraulic pump and the second hydraulic oil chamber, the second hydraulic control unit being configured to control an oil supply state of the second hydraulic pump according to a control signal to control the second telescopic arm 202 to be telescopic in the radial direction of the second land 201. The method for controlling the second telescopic arm 202 by the second hydraulic control unit is the same as that of the first hydraulic control unit, so that the second telescopic arm 202 moves along the radial direction of the second connecting disc 201, the diameter of a driven wheel is changed, and the purpose of speed change is achieved. Six hydraulic arms attached to each large pulley (driving wheel or driven wheel) can be independently extended and retracted through program control, certain extension and retraction change is carried out according to the speed requirement required by a user, and the speed change range is further enlarged.
As shown in fig. 1 and 4, the transmission belt 300 may be a steel chain, and when the transmission belt 300 is a steel chain, the first auxiliary wheel 103 and the second auxiliary wheel 203 are sprockets to meet the transmission requirements of the first auxiliary wheel 103 and the second auxiliary wheel 203.
As shown in fig. 5 to 8, the continuously variable transmission further includes an adjusting mechanism 400 disposed between the driving pulley set 100 and the driven pulley set 200 and used for adjusting the tightness state of the transmission belt 300, the adjusting mechanism 400 includes a first adjusting pulley 401, a second adjusting pulley 402 and a first telescopic member 403, wherein: the first adjusting wheel 401 is arranged on the inner side of the transmission belt 300, and the first adjusting wheel 401 is in meshed connection with the transmission belt 300; the second adjusting wheel 402 is arranged at a distance from the first adjusting wheel 401 and is positioned on the outer side of the transmission belt 300, and the second adjusting wheel 402 is meshed with the transmission belt 300; the first telescopic member 403 is in transmission connection with the second adjustment wheel 402 for driving the second adjustment wheel 402 to move towards or away from the first adjustment wheel 401. Specifically, the front and rear sides of the driving wheel and the driven wheel are respectively connected with a connecting shaft 407, and two ends of the connecting shaft 407 are respectively rotatably connected with the driving shaft 104 and the driven shaft 204. Each connecting shaft 407 is connected with a first fixing rod 408 vertically arranged with the connecting shaft 407, the extending directions of the first fixing rod 408 and the first telescopic member 403 are on the same straight line, the first end of the first fixing rod 408 is fixedly connected with the connecting shaft 407, the second end of the first fixing rod 408 extends upward away from the first telescopic member 403, the first end of the first telescopic member 403 is fixedly connected with the connecting shaft 407, and the second end of the first telescopic member 403 extends downward away from the first fixing rod 408. The number of the first fixing rods 408 and the first telescopic members 403 is equal to the number of the connecting shafts 407, for example, 2. The two first fixing rods 408 connected to the two connecting shafts 407 are disposed opposite to each other, a first transmission shaft 410 is connected between the two first fixing rods 408, two ends of the first transmission shaft 410 are rotatably connected to second ends of the two first fixing rods 408, respectively, and the first adjusting wheel 401 is connected to the first transmission shaft 410, so that the first adjusting wheel 401 is connected to the driving belt 300. The two first telescopic members 403 connected with the two connecting shafts 407 are oppositely arranged, a second transmission shaft 411 is connected between the two first telescopic members 403, two ends of the second transmission shaft 411 are respectively rotatably connected with second ends of the two first telescopic members 403, and the second adjusting wheel 402 is connected to the second transmission shaft 411, so that the second adjusting wheel 402 is connected with the transmission belt 300. The first adjustment wheel 401 and the second adjustment wheel 402 are sprockets, the first adjustment wheel 401 is disposed on the inner side of the belt 300, and the second adjustment wheel 402 is disposed on the outer side of the belt 300.
As shown in fig. 5-8, the adjustment mechanism 400 further comprises a third adjustment wheel 404, a fourth adjustment wheel 405, and a second telescoping member 406, wherein: the third regulating wheel 404 is positioned at the outer side of the transmission belt 300, and the third regulating wheel 404 is in meshed connection with the transmission belt 300; the fourth regulating wheel 405 is positioned on the inner side of the transmission belt 300, and the fourth regulating wheel 405 is in meshed connection with the transmission belt 300; the second telescopic member 406 is in transmission connection with the third adjustment wheel 404 for driving the third adjustment wheel 404 to move towards or away from the fourth adjustment wheel 405. Specifically, each connecting shaft 407 is connected with a second fixing rod 409 which is perpendicular to the connecting shaft 407, the extending directions of the second fixing rod 409 and the second telescopic member 406 are on the same straight line, the first end of the second telescopic member 406 is fixedly connected with the connecting shaft 407, and the second end of the second telescopic member 406 extends upwards back to the first fixing rod 408; a first end of the second fixing rod 409 is fixedly connected to the connecting shaft 407, and a second end thereof extends downward away from the second extensible member 406. The number of the second fixing rods 409 and the second telescopic members 406 is equal to the number of the connecting shafts 407, for example, 2. The two second telescopic members 406 connected to the two connecting shafts 407 are disposed opposite to each other, a third transmission shaft 412 is connected between the two second telescopic members 406, two ends of the third transmission shaft 412 are rotatably connected to the second ends of the two second telescopic members 406, respectively, and the third adjustment wheel 404 is connected to the third transmission shaft 412, so that the third adjustment wheel 404 is connected to the driving belt 300. Two second fixing rods 409 connected with the two connecting shafts 407 are oppositely arranged, a fourth transmission shaft 413 is connected between the two second fixing rods 409, two ends of the fourth transmission shaft 413 are respectively rotatably connected with second ends of the two second fixing rods 409, and a fourth adjusting wheel 405 is connected to the fourth transmission shaft 413, so that the fourth adjusting wheel 405 is connected with the transmission belt 300. The third pulley 404 and the fourth pulley 405 are sprockets, the third pulley 404 is disposed on the outer side of the belt 300, and the fourth pulley 405 is disposed on the inner side of the belt 300.
The first telescopic member 403 and the second telescopic member 406 are both hydraulic arms, and when the continuously variable transmission is in a speed-up state through hydraulic control of extension and retraction, the first, second, third and fourth adjusting wheels 401, 402, 404 and 405 are always kept attached to the transmission belt 300 through extension and retraction of the first telescopic member 403 and the second telescopic member 406; when the continuously variable transmission is in a speed reduction state, the first, second, third and fourth adjusting wheels 401, 402, 404 and 405 extend through the first telescopic piece 403 and the second telescopic piece 406 and are always kept attached to the transmission belt 300, so that the speed of the steel chain can be rapidly and stably reduced to the use requirement, meanwhile, the abrasion to the transmission belt 300 can be reduced to a great extent, the situation that the transmission belt 300 (the steel chain) is strongly stretched at a closed position in the process of stretching the first telescopic arm 102 and the second telescopic arm 202 is avoided, the abrasion to the transmission belt 300 is reduced, the service life of the transmission belt 300 is prolonged, the cost of abrasion of the steel chain is saved, and the long-distance market benefit is achieved.
As shown in fig. 3, a damper spring 109 is connected to the first auxiliary wheel 103 and the second auxiliary wheel 203. The provision of the damper spring 109 allows all of the attached first auxiliary sheave 103 and second auxiliary sheave 203 to vibrate within a small range, reduces the impact when the first and second auxiliary sheaves 103, 203 are engaged with the transmission belt 300, and prevents tooth jumping during engagement.
The working principle of one embodiment of the invention is as follows: in the speed-up state, the driving wheel sequentially extends and expands the inner diameter of the driving wheel when the first telescopic arm 102 of the six first auxiliary wheels 103 attached to the driving wheel rotates anticlockwise, and the driven wheel reduces the inner diameter of the driven wheel by the counterclockwise shortening of the second telescopic arm 202 of the six second auxiliary wheels 203 attached to the driven wheel; the first telescopic arms 102 of the six first auxiliary wheels 103 attached to the driving wheel set 100 have been extended to the maximum length, and the second telescopic arms 202 of the six second auxiliary wheels 203 attached to the driven wheel set 200 have been shortened to the minimum length, at which time the linear speed of the transmission output reaches the maximum; in a deceleration state, the first telescopic arms 102 of the six first auxiliary wheels 103 attached to the driving wheel set 100 in the deceleration state are sequentially shortened in a counterclockwise direction (the first auxiliary wheels 103 which are not in contact with the belt 300 participate in telescopic transformation), and simultaneously the second telescopic arms 202 of the six second auxiliary wheels 203 attached to the driven wheel set 200 are also sequentially extended in a counterclockwise direction (the second auxiliary wheels 203 which are not in contact with the belt 300 participate in telescopic transformation); the first, second, third and fourth adjusting wheels 401, 402, 404 and 405 on the connecting shafts are always kept attached to the driving belt 300 by the telescopic change of the first telescopic member 403 and the second telescopic member 406.
The reducing and adjusting mechanisms 400 of the driving wheel and the driven wheel are all controlled by hydraulic pressure, and the hydraulic transmission technology has unique advantages, so that the hydraulic transmission mechanism can be widely applied to various mechanical devices, the hydraulic transmission which can best embody the unique characteristics of the hydraulic transmission technology can be widely used inevitably, such as automobiles, engineering machinery, metal cutting machine tools, robots and the like, therefore, the mechanical and electrical integration, automation and intellectualization of the hydraulic stepless speed changer become a new development trend in the industry in the world at present, the hydraulic transmission has the characteristics of environmental protection, high efficiency, easy realization of automatic control and compact structure, meets the development requirements of current industrial equipment, has the unique advantages of no other transmission modes, has inertia of movement, sensitive and quick small action, stable movement, easy realization of stepless speed change and can obtain a great speed regulation ratio.
[ example two ]
The two-pulley controllable hydraulic arm continuously variable transmission in the present embodiment is different from the first embodiment in that the two-pulley controllable hydraulic arm continuously variable transmission in the present embodiment has a different transmission belt 300. Therefore, the following description focuses on the transmission belt 300 in this embodiment. Descriptions of the same or similar elements as in the first embodiment will be omitted.
The inner side wall of the belt 300 in this embodiment is provided with an internal tooth portion, and the first auxiliary wheel 103 and the second auxiliary wheel 203 are gears that are engaged with the internal tooth portion. An outer tooth portion is provided on an outer side wall of the belt 300, the first and fourth adjustment wheels 401 and 405 are gears engaged with the inner tooth portion, and the second and third adjustment wheels 402 and 404 are gears engaged with the outer tooth portion.
[ EXAMPLE III ]
The invention further provides an automobile which comprises the double-pulley controllable hydraulic arm continuously variable transmission in any technical scheme, and the automobile has all the beneficial effects of the double-pulley controllable hydraulic arm continuously variable transmission, and the details are not repeated.
The double pulley controllable hydraulic arm continuously variable transmission of the present invention has been described in detail with reference to the preferred embodiments thereof, however, it should be noted that those skilled in the art may make modifications, alterations and adaptations on the basis of the above disclosure without departing from the spirit of the present invention. The invention includes the specific embodiments described above and any equivalents thereof.
Claims (10)
1. A dual pulley controlled hydraulic arm continuously variable transmission, comprising a driving pulley set (100), a driven pulley set (200) and a transmission belt (300) for driving and connecting the driving pulley set (100) and the driven pulley set (200), wherein:
the driving wheel set (100) comprises a driving wheel, the driving wheel comprises a first connecting disc (101), a plurality of first telescopic arms (102) and a plurality of first auxiliary wheels (103) corresponding to the first telescopic arms (102) one by one, the first end of each first telescopic arm (102) is connected with the first connecting disc (101), and the second end of each first telescopic arm (102) extends along the radial direction of the first connecting disc (101) and is connected with the first auxiliary wheel (103); the first telescopic arms (102) are distributed along the circumferential direction of the first connecting disc (101) and can be stretched and contracted along the radial direction of the first connecting disc (101);
the driven wheel set (200) comprises a driven wheel, the driven wheel comprises a second connecting disc (201), a plurality of second telescopic arms (202) and a plurality of second auxiliary wheels (203) corresponding to the second telescopic arms (202) one by one, the first ends of the second telescopic arms (202) are connected with the second connecting disc (201), and the second ends of the second telescopic arms (202) extend along the radial direction of the second connecting disc (201) and are connected with the second auxiliary wheels (203); the plurality of second telescopic arms (202) are distributed along the circumferential direction of the second connecting disc (201) and can be telescopic along the radial direction of the second connecting disc (201); and
the drive belt (300) passes around the first auxiliary wheel (103) and the second auxiliary wheel (203).
2. The dual pulley controllable hydraulic arm continuously variable transmission of claim 1, wherein the first telescopic arm (102) and the second telescopic arm (202) are both hydraulic arms, the first connection disc (101) comprises a plurality of first hydraulic oil chambers (106) in one-to-one correspondence with the first telescopic arm (102), and the second connection disc (201) comprises a plurality of second hydraulic oil chambers in one-to-one correspondence with the second telescopic arm (202).
3. The dual pulley controllable hydraulic arm continuously variable transmission of claim 2, further comprising:
a first hydraulic pump for supplying oil into the first hydraulic oil chamber (106), the first hydraulic pump being in communication with the first hydraulic oil chamber (106);
a first hydraulic control unit connected to the first hydraulic pump and the first hydraulic oil chamber (106), the first hydraulic control unit being configured to control an oil supply state of the first hydraulic pump in accordance with a control signal to control the first telescopic arm (102) to be telescopic in a radial direction of the first connecting disc (101).
4. The dual pulley controllable hydraulic arm continuously variable transmission of claim 2, further comprising:
the second hydraulic pump is used for supplying oil to the second hydraulic oil chamber and communicated with the second hydraulic oil chamber;
the second hydraulic control unit is connected with the second hydraulic pump and the second hydraulic oil chamber and is set to control the oil supply state of the second hydraulic pump according to a control signal so as to control the second telescopic arm (202) to stretch along the radial direction of the second connecting disc (201).
5. The dual pulley controllable hydraulic arm continuously variable transmission according to claim 1, further comprising an adjusting mechanism (400) provided between the driving pulley set (100) and the driven pulley set (200) for adjusting a tightness state of the transmission belt (300), the adjusting mechanism (400) comprising:
a first regulating wheel (401) arranged on the inner side of the transmission belt (300), wherein the first regulating wheel (401) is connected with the transmission belt (300) in a meshing way;
the second adjusting wheel (402) is arranged at a distance from the first adjusting wheel (401) and is positioned on the outer side of the transmission belt (300), and the second adjusting wheel (402) is in meshed connection with the transmission belt (300);
the first telescopic piece (403) is in transmission connection with the second adjusting wheel (402) and is used for driving the second adjusting wheel (402) to move towards or away from the first adjusting wheel (401).
6. The dual pulley controllable hydraulic arm continuously variable transmission of claim 5, wherein the adjustment mechanism (400) further comprises:
a third adjusting wheel (404) positioned on the outer side of the transmission belt (300), wherein the third adjusting wheel (404) is in meshed connection with the transmission belt (300);
a fourth adjusting wheel (405) is positioned on the inner side of the transmission belt (300), and the fourth adjusting wheel (405) is in meshed connection with the transmission belt (300);
and the second telescopic piece (406) is in transmission connection with the third adjusting wheel (404) and is used for driving the third adjusting wheel (404) to move towards or away from the fourth adjusting wheel (405).
7. The dual pulley controllable hydraulic arm continuously variable transmission according to claim 1, wherein a damper spring (109) is connected to each of the first auxiliary wheel (103) and the second auxiliary wheel (203).
8. The twin pulley controllable hydraulic arm continuously variable transmission according to claim 6, wherein an inner toothed portion is provided on an inner side wall of the transmission belt (300), and the first auxiliary wheel (103) and the second auxiliary wheel (203) are gears engaged with the inner toothed portion.
9. The dual pulley controllable hydraulic arm continuously variable transmission according to claim 8, wherein an outer side wall of the transmission belt (300) is provided with an outer toothed portion, the first and fourth adjustment wheels (401, 405) are gears engaged with the inner toothed portion, and the second and third adjustment wheels (402, 404) are gears engaged with the outer toothed portion.
10. An automobile comprising the double pulley controllable hydraulic arm continuously variable transmission according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010995615.8A CN112211971A (en) | 2020-09-21 | 2020-09-21 | Double-pulley controllable hydraulic arm stepless speed changer and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010995615.8A CN112211971A (en) | 2020-09-21 | 2020-09-21 | Double-pulley controllable hydraulic arm stepless speed changer and automobile |
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| Publication Number | Publication Date |
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| CN112211971A true CN112211971A (en) | 2021-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010995615.8A Pending CN112211971A (en) | 2020-09-21 | 2020-09-21 | Double-pulley controllable hydraulic arm stepless speed changer and automobile |
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Application publication date: 20210112 |
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