CN117329280B - Friction speed changer - Google Patents
Friction speed changer Download PDFInfo
- Publication number
- CN117329280B CN117329280B CN202311320703.8A CN202311320703A CN117329280B CN 117329280 B CN117329280 B CN 117329280B CN 202311320703 A CN202311320703 A CN 202311320703A CN 117329280 B CN117329280 B CN 117329280B
- Authority
- CN
- China
- Prior art keywords
- gear
- friction
- transmission
- output
- driving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 212
- 230000007246 mechanism Effects 0.000 claims abstract description 31
- 238000007599 discharging Methods 0.000 claims 1
- 230000008859 change Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000007306 turnover Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- 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
- F16H15/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
- F16H15/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members without members having orbital motion
- F16H15/04—Gearings providing a continuous range of gear ratios
- F16H15/06—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B
-
- 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
-
- 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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
-
- 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
- F16H61/664—Friction gearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
The invention discloses a friction transmission, which comprises an output shaft, an input shaft, a gear transmission mechanism, a plurality of transmission friction discs with different gears, an output friction disc and a gear shifting assembly, wherein the transmission friction discs with different gears are circumferentially distributed along the input shaft, the input shaft is respectively connected with the transmission friction discs with different gears through the gear transmission mechanism, the output friction disc is arranged above each transmission friction disc, the output friction disc is connected with a friction wheel connecting rod, the friction wheel connecting rod is connected with the gear shifting assembly, the gear shifting assembly is connected with the output shaft, the gear shifting assembly can drive the output friction disc to rotate around the input shaft through the friction wheel connecting rod, and enable the output friction disc to move along the distribution path circle of each transmission friction disc, so that the output friction disc rotates around the input shaft to stay on each transmission friction disc, and further the output friction disc and the corresponding transmission friction disc form friction transmission. The invention can realize quick gear shifting, has simple structure and does not need to install a clutch.
Description
Technical Field
The invention relates to a friction transmission, in particular to a friction transmission.
Background
The existing step-variable transmission mainly realizes torque transmission through gear engagement, and further realizes a torque conversion function through gear engagement with different proportions, but the gear can be switched only by firstly disconnecting the clutch when shifting gears each time. The friction type speed changer is mainly round table type, disc type and hemisphere type, realizes the effect of changing moment through the change of friction pulley on friction disc, friction cone, friction ball, but when changing moment at every turn, the friction pulley all moves on friction disc, friction cone, friction ball through sliding friction, because itself friction pulley and friction disc, friction cone, friction ball are high coefficient of friction face, consequently the slip is shifted and is made the loss of derailleur aggravate.
Disclosure of Invention
The invention aims to provide a friction transmission which is capable of realizing quick gear shifting and simple in structure and does not need to be provided with a clutch.
The technical scheme adopted by the invention is as follows:
The friction transmission comprises an output shaft, an input shaft, a gear transmission mechanism, a plurality of transmission friction discs with different gears, an output friction disc and a gear shifting assembly, wherein the transmission friction discs with different gears are circumferentially distributed along the input shaft; the input shaft drives the transmission friction discs of different gears to rotate respectively through the gear transmission mechanism, the corresponding transmission friction discs drive the output friction discs to rotate through friction, and the output friction discs drive the output shaft to rotate through the gear shifting assembly.
Preferably, the gear shifting assembly comprises a gear shifting ring, a gear shifting motor, a driving rotating shaft, a gear shifting transmission mechanism and a gear shifting overturning locker, wherein the gear shifting motor is connected with the driving rotating shaft through the gear shifting transmission mechanism, the driving rotating shaft is connected with the friction wheel connecting rod through the gear shifting overturning locker, and the driving rotating shaft is connected with the output shaft through the output gear transmission mechanism;
The gear shifting ring is arranged at the inner ring of the distribution path circle and is arranged below the friction wheel connecting rod, the gear shifting ring comprises a bottom circular ring, a plurality of gear shifting flange curved sections are distributed on the bottom circular ring at intervals, a smooth section is arranged between every two adjacent gear shifting flange curved sections, a corresponding smooth section is arranged between the transmission friction plate and the axis of the input shaft, when the output friction plate rotates from one transmission friction plate to the next transmission friction plate along with the friction wheel connecting rod, the gear shifting overturning locker closes to enable the friction wheel connecting rod to rotate relative to the driving rotating shaft, the friction wheel connecting rod passes through the gear shifting flange curved sections, the friction wheel connecting rod and the output friction plate are jacked upwards, so that the output friction plate is separated from the corresponding transmission friction plate, when the output friction plate rotates to the corresponding transmission friction plate needing to be abutted, the friction wheel connecting rod falls into the corresponding smooth section, the friction wheel connecting rod falls down, the output friction plate contacts with the corresponding transmission friction plate, and the gear shifting overturning locker starts to lock the position between the friction wheel connecting rod and the driving rotating shaft, and the corresponding transmission friction plate is enabled to rotate tightly to be in contact with the corresponding transmission friction plate, and the corresponding transmission friction plate is enabled to be convenient to rotate tightly through the corresponding transmission friction plate.
Preferably, the gear shifting transmission mechanism comprises a gear shifting rotating shaft, a gear shifting motor, a third bevel gear, a fourth bevel gear and a gear shifting steering block, wherein the gear shifting steering block and the fourth bevel gear are arranged on the gear shifting rotating shaft, the gear shifting steering block is connected with the driving rotating shaft, the third bevel gear is arranged on an output shaft of the gear shifting motor, and the third bevel gear is meshed with the fourth bevel gear; the gear shifting motor drives a fourth bevel gear to rotate through a third bevel gear, the fourth bevel gear drives a gear shifting steering block to rotate through a gear shifting rotating shaft, and the gear shifting steering block drives a friction wheel connecting rod and an output friction coil to rotate through a driving rotating shaft.
Preferably, the output gear transmission mechanism comprises a first bevel gear and a second bevel gear, the first bevel gear is sleeved on the driving rotating shaft, the second bevel gear is arranged on the output shaft, and the first bevel gear is meshed with the second bevel gear; the driving rotation drives the first bevel gear to rotate, and the first bevel gear drives the output shaft to rotate through the second bevel gear.
Preferably, the gear shifting overturning locker comprises a locking driving motor, a hydraulic disc, locking blocks and a locking disc, wherein a friction wheel connecting rod is connected with a hydraulic rotating plate, the locking disc is connected with a driving rotating shaft through a connecting rod, the hydraulic rotating plate is connected with the locking disc through a rotating shaft, locking block sliding grooves are circumferentially distributed on the hydraulic rotating plate, the locking blocks are arranged in the locking block sliding grooves, and the locking disc is provided with positioning pin locking grooves which are consistent in number with the locking block sliding grooves and are arranged in a one-to-one correspondence manner;
The locking plate is positioned at one side of the hydraulic rotating plate, the other end of the hydraulic rotating plate is provided with a hydraulic cavity, a hydraulic plate driving cylinder is arranged on the hydraulic cavity, the hydraulic plate is arranged in the hydraulic plate driving cylinder, and the locking driving motor is connected with the hydraulic plate through a screw rod; the locking driving motor drives the hydraulic plate to move back and forth along the hydraulic plate driving cylinder through the screw rod, so that the driving locking block is inserted into the locating pin locking groove on the locking plate, and further the rotating position between the hydraulic rotating plate and the locking plate is locked, or the driving locking block is retracted and pulled out from the locating pin locking groove, and further the hydraulic rotating plate can rotate around the rotating shaft and the locking plate.
Preferably, the upper end surface of the locating pin locking groove is provided with a locating pin chute, and the lower end surface of the locating pin locking groove is provided with a through hole for exhausting air in the locating pin locking groove from the through hole when the locking block is inserted into the locating pin locking groove.
Preferably, the number of the positioning pin locking grooves is 2-6, and the positioning pin locking grooves are distributed along the circumferential direction of the rotating shaft.
Preferably, the gear transmission mechanism comprises a pair of mutually meshed output gears and driving gears which are correspondingly arranged on each transmission friction disc, the driving gears are sequentially arranged on the input shaft, and each transmission friction disc is connected with the corresponding output gear through a transmission shaft;
When one of the transmission friction discs is used as a reverse gear friction disc, the output gear and the driving gear which are correspondingly arranged on the reverse gear friction disc are a reverse gear output gear and a reverse gear driving gear, and the reverse gear output gear and the reverse gear driving gear are meshed through a reverse gear idler wheel.
Preferably, the number of the transmission friction discs is 6, the transmission friction discs are respectively a first-gear transmission friction disc, a second-gear transmission friction disc, a third-gear transmission friction disc, a fourth-gear transmission friction disc, a fifth-gear transmission friction disc and a reverse-gear transmission friction disc, the first-gear transmission friction disc, the second-gear transmission friction disc, the third-gear transmission friction disc, the fourth-gear transmission friction disc, the fifth-gear transmission friction disc and the reverse-gear transmission friction disc are respectively connected with a corresponding first-gear output gear, a second-gear output gear, a third-gear output gear, a fourth-gear output gear, a fifth-gear output gear and a reverse-gear output gear through corresponding transmission shafts, a first-gear drive gear, a second-gear drive gear, a third-gear drive gear, a fourth-gear drive gear and a fifth-gear drive gear are sequentially distributed on an input shaft, and the first-gear drive gear, the second-gear drive gear, the third-gear drive gear, the fourth-gear drive gear and the fifth-gear drive gear are respectively meshed with the first-gear output gear, the second-gear output gear, the third-gear output gear, the fourth-gear output gear and the fifth-gear output gear are respectively meshed with the reverse-gear idler gear through the reverse-gear output idler gear.
Preferably, the friction transmission further comprises a transmission shell and a frame, the transmission shell is connected with the frame, the input shaft is arranged on the frame through a bearing and is arranged below the working face of the transmission friction disc, the transmission shafts of the transmission friction discs are arranged on the frame through bearings, and the output shaft, the input shaft, the gear transmission mechanism, the transmission friction discs with different gears, the output friction disc and the gear shifting assembly are arranged in the transmission shell.
The beneficial effects of the invention are as follows:
1. According to the gear shifting assembly, the output friction coil input shaft can be driven to rotate through the friction wheel connecting rod, the output friction coil input shaft can be enabled to move along the distribution path circle of each transmission friction disc, the output friction coil input shaft can be enabled to rotate and stay on each transmission friction disc according to the requirement, rapid gear shifting can be achieved through driving the output friction disc, and the gear shifting assembly is simple in structure and does not need to be provided with a clutch.
2. The friction transmission realizes that when in gear shifting, the friction wheels do not need to be in sliding friction mode on the friction disc to change different positions through the gear shifting ring and the gear shifting overturning locker, so that the function of gear shifting is realized; according to the technical scheme, only rolling friction force exists between the friction wheel and the friction disc, friction loss can be greatly reduced, the service life of the transmission is prolonged, the friction wheel is in contact with the friction disc with different rotation speeds, the speed change function is realized, and compared with a gear transmission, a clutch is not required to be installed due to the adoption of friction speed change, so that the whole vehicle structure is further simplified.
Drawings
FIG. 1 is a schematic illustration of a friction transmission according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a gear assembly according to an embodiment of the present invention;
FIG. 3 is a schematic view of the structure of a lock disk according to an embodiment of the present invention;
FIG. 4 is a top perspective view of a housing in an embodiment of the invention;
FIG. 5 is a bottom perspective view of a housing in accordance with an embodiment of the present invention;
FIG. 6 is a schematic view of a gear shifting ring according to an embodiment of the present invention;
FIG. 7 is a schematic illustration of a shift assembly in accordance with an embodiment of the present invention;
FIG. 8 is a schematic view of the structure of an output friction disk in an embodiment of the invention;
In the figure: 1-output shaft, 2-input shaft, 3-transmission housing, 4-third gear transmission friction disk, 5-fourth gear transmission friction disk, 6-fifth gear transmission friction disk, 7-reverse gear transmission friction disk, 8-first gear transmission friction disk, 9-second gear transmission friction disk, 10-output friction disk, 11-locking disk, 12-shift ring, 13-first bevel gear, 14-second bevel gear, 15-shift motor, 16-third bevel gear, 17-fourth bevel gear, 18-bearing, 19-reverse gear drive gear, 20-reverse gear idler, 21-reverse gear output gear, 22-first gear drive gear, 23-first gear output gear, 24-second gear drive gear, 25-second gear output gear, 26-third gear drive gear, 27-third gear output gear, 28-fourth gear drive gear, 29-fourth gear output gear, 30-fifth gear drive gear, 31-fifth gear output gear, 32-frame, 33-locking drive motor, 34-hydraulic pressure plate, 35-steering block, 36-locking block;
1001-friction wheels, 1002-friction wheel connecting rods, 1003-hydraulic plate driving cylinders, 1004-locking block sliding grooves, 1005-rotating shaft holes and 1006-motor holes;
1101-driving shaft, 1102-connecting rod, 1103-locating pin locking groove, 1104-through hole, 1105-locating pin chute, 1106-rotating shaft;
1201-smooth segment, 1202-shift flange curved segment, 1203-bottom ring;
3201-friction disk mounting groove, 3202-friction disk rotating shaft mounting groove, 3203-gear shifting ring mounting groove, 3204-gear shifting rotating groove, 3205-motor mounting groove, 3206-idler rotating shaft, 3207-bearing mounting groove.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the indicated azimuth or positional relationship is based on the azimuth or positional relationship shown in the drawings, it is merely for convenience of description and simplification of the description, and does not indicate or imply that the indicated apparatus or element must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present invention, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
1-8, The friction transmission comprises an output shaft 1, an input shaft 2, a gear transmission mechanism, a plurality of transmission friction discs with different gears, an output friction disc 10 and a gear shifting assembly, wherein the transmission friction discs with different gears are circumferentially distributed along the input shaft 2 and are sequentially arranged along a path circle, the input shaft 2 is respectively connected with the transmission friction discs with different gears through the gear transmission mechanism, the output friction disc 10 is arranged above each transmission friction disc, the output friction disc 10 is connected with a friction wheel connecting rod, the friction wheel connecting rod is connected with the gear shifting assembly, the gear shifting assembly is connected with the output shaft 1, the gear shifting assembly can drive the output friction disc 10 to rotate around the input shaft 2 through the friction wheel connecting rod, and enable the output friction disc 10 to move along the distribution path circle of each transmission friction disc, the rotation speeds of each transmission friction disc are different, the output friction disc 10 can rotate around the input shaft 2 to stay on each transmission friction disc as required, the rotation speeds of the output friction disc and the output shaft are adjusted, and the corresponding transmission friction discs are enabled to form friction transmission; the input shaft 2 drives transmission friction discs of different gears to rotate respectively through a gear transmission mechanism, the corresponding transmission friction discs drive the output friction disc 10 to rotate through friction, and the output friction disc 10 drives the output shaft 1 to rotate through a gear shifting assembly. The frame 32 and transmission housing 3 in fig. 1 are of half-section construction.
Further, the side surface of the output friction disk 10 contacts with the top surface of the transmission friction disk, and the distribution path of each transmission friction disk forms a path circle, and the center of the path circle is arranged on the axis of the input shaft 2.
Example 2
Further limitations of the shift assembly are provided on the basis of example 1, as shown in fig. 3 and 6-8, with the performance of example 2 being further improved after the limitations.
The gear shifting assembly comprises a gear shifting ring 12, a gear shifting motor 15, a driving rotating shaft, a gear shifting transmission mechanism and a gear shifting overturning locker, wherein the gear shifting motor 15 is connected with the driving rotating shaft through the gear shifting transmission mechanism, the driving rotating shaft is connected with the friction wheel connecting rod through the gear shifting overturning locker, and the driving rotating shaft is connected with the output shaft 1 through the output gear transmission mechanism;
The distribution path of each transmission friction disc forms a path circle, the gear shifting ring 12 is arranged on the inner ring of the distribution path circle, the gear shifting ring is sleeved outside the input shaft 2 and takes the input shaft 2 as the center of the gear shifting ring 12, the gear shifting ring 12 comprises a bottom circular ring, a plurality of gear shifting flange curved sections are distributed on the bottom circular ring at intervals, smooth sections are arranged between every two adjacent gear shifting flange curved sections, the number of the smooth sections is consistent with that of the transmission friction discs, the smooth sections are arranged in one-to-one correspondence, corresponding smooth sections are arranged between the transmission friction discs and the axis of the input shaft 2, when the output friction disc 10 rotates along with the friction wheel connecting rod from one transmission friction disc to the next transmission friction disc, the gear shifting turnover locking device is closed, the friction wheel connecting rod and the driving rotating shaft can rotate relatively, the friction wheel connecting rod passes through the gear shifting flange curved sections, the friction wheel connecting rod and the output friction disc 10 are jacked up, the output friction disc 10 and the corresponding transmission friction disc are separated from contact, when the output friction disc 10 rotates along with the friction wheel connecting rod to the corresponding transmission friction disc needing to be butted, the corresponding smooth sections fall into the corresponding friction disc, the friction disc and the corresponding friction disc is locked with the corresponding friction disc 10, the corresponding friction disc is in the rotation position between the output friction disc and the corresponding friction disc and the driving friction disc is locked, the corresponding friction disc is in the rotation position, and the corresponding friction disc is tightly contacted with the output friction disc 10, and the corresponding friction disc is driven by the corresponding friction disc.
Further, the gear shifting transmission mechanism comprises a gear shifting rotating shaft, a gear shifting motor 15, a third bevel gear 16, a fourth bevel gear 17 and a gear shifting steering block 35, wherein the gear shifting steering block 35 and the fourth bevel gear 17 are arranged on the gear shifting rotating shaft, the gear shifting rotating shaft and the input shaft 2 are arranged on the same straight line, the gear shifting steering block 35 is connected with the driving rotating shaft, the third bevel gear 16 is arranged on an output shaft of the gear shifting motor 15, and the third bevel gear 16 is meshed with the fourth bevel gear 17; the gear shifting motor 15 drives the fourth bevel gear 17 to rotate through the third bevel gear 16, the fourth bevel gear 17 drives the gear shifting steering block 35 to rotate through a gear shifting rotating shaft, and the gear shifting steering block 35 drives the friction wheel connecting rod and the output friction disc 10 to rotate around the gear shifting rotating shaft through a driving rotating shaft.
Further, the output gear transmission mechanism comprises a first bevel gear 13 and a second bevel gear 14, the first bevel gear 13 is sleeved on the driving rotating shaft, the second bevel gear 14 is arranged on the output shaft 1, and the first bevel gear 13 is meshed with the second bevel gear 14; the driving rotation drives the first bevel gear 13 to rotate, and the first bevel gear 13 drives the output shaft 1 to rotate through the second bevel gear 14.
Example 3
As shown in fig. 3 and fig. 7 to 8, the shift flip-flop lock is defined on the basis of examples 1 and 2, and the performance of example 3 after the definition is more excellent. In order to conveniently display the internal structure of the gear shifting turnover locker, the friction wheel connecting rod and the hydraulic disc 34 in fig. 7 are of a half-section structure, and the friction wheel connecting rod, the hydraulic rotating plate, the hydraulic cavity and the hydraulic plate driving cylinder in fig. 8 are of a half-section structure.
The gear shifting turnover locker comprises a locking driving motor 33, a hydraulic disc 34, a locking block 36 and a locking disc 11, wherein a friction wheel connecting rod is connected with a hydraulic rotating plate, the locking disc 11 is connected with a driving rotating shaft 1101 through a connecting rod 1102, the hydraulic rotating plate is connected with the locking disc 11 through the rotating shaft, locking block sliding grooves are circumferentially distributed on the hydraulic rotating plate, the locking block 36 is arranged in the locking block sliding grooves, positioning pin locking grooves are formed in the locking disc 11, and the positioning pin locking grooves are consistent in number with the locking block sliding grooves and are arranged in a one-to-one correspondence manner;
The locking plate 11 is positioned at one side of the hydraulic rotating plate, the other end of the hydraulic rotating plate is provided with a hydraulic cavity, a hydraulic plate driving cylinder is arranged on the hydraulic cavity, the hydraulic plate 34 is arranged in the hydraulic plate driving cylinder, the locking driving motor 33 is connected with the hydraulic plate 34 through a screw rod, and a hydraulic medium is filled between the hydraulic plate driving cylinder and one end of the locking block; the locking driving motor 33 drives the hydraulic disc 34 to move back and forth along the hydraulic plate driving cylinder through the screw rod, the hydraulic disc 34 enables the driving locking block 36 to be inserted into the locating pin locking groove on the locking disc 11 through the hydraulic medium in the hydraulic plate driving cylinder, so that the rotating position between the hydraulic rotating plate and the locking disc 11 is locked, or the driving locking block 36 is retracted and pulled out from the locating pin locking groove, so that the hydraulic rotating plate can rotate around the rotating shaft and the locking disc 11.
Further, the upper end face of the locating pin locking groove is provided with a locating pin chute, and the lower end face of the locating pin locking groove is provided with a through hole, so that air in the locating pin locking groove can be discharged from the through hole when the locking block is inserted into the locating pin locking groove.
Further, the number of the positioning pin locking grooves is 2-6, and the positioning pin locking grooves are distributed along the circumferential direction of the rotating shaft.
Further, the gear transmission mechanism comprises a pair of mutually meshed output gears and driving gears which are correspondingly arranged on each transmission friction disc, the driving gears corresponding to the transmission friction discs are sequentially arranged on the input shaft 2, and the transmission friction discs are connected with the corresponding output gears through transmission shafts; the transmission ratio coefficients of the output gear and the driving gear corresponding to different transmission friction discs are different, so that the different rotation speeds of the transmission friction discs are realized.
When one of the transmission friction discs is used as a reverse gear friction disc, the output gear and the driving gear which are correspondingly arranged on the reverse gear friction disc are a reverse gear output gear 21 and a reverse gear driving gear 19, and the reverse gear output gear 21 and the reverse gear driving gear 19 are meshed through a reverse gear idler gear 20.
Further, the number of the transmission friction discs is 6, the transmission friction discs are respectively a first-gear transmission friction disc 8, a second-gear transmission friction disc 9, a third-gear transmission friction disc 4, a fourth-gear transmission friction disc 5, a fifth-gear transmission friction disc 6 and a reverse-gear transmission friction disc 7, the first-gear transmission friction disc 8, the second-gear transmission friction disc 9, the third-gear transmission friction disc 4, the fourth-gear transmission friction disc 5, the fifth-gear transmission friction disc 6 and the reverse-gear transmission friction disc 7 are respectively connected with a corresponding first-gear output gear 23, a second-gear output gear 25, a third-gear output gear 27, a fourth-gear output gear 29, a fifth-gear output gear 31 and a reverse-gear output gear 21 through corresponding transmission shafts, a first-gear drive gear 22, a second-gear drive gear 24, a third-gear drive gear 26, a fourth-gear drive gear 28, a fifth-gear drive gear 30 and a reverse-gear drive gear 19 are sequentially distributed on the input shaft 2, and are respectively meshed with the first-gear output gear 23, the second-gear output gear 25, the third-gear output gear 27, the fourth-gear output gear 31 and the reverse-gear output gear 21 and the reverse-gear drive gear 20 through the reverse-gear drive gear 21.
Further, the friction transmission further comprises a transmission housing 3 and a frame 32, the transmission housing 3 is connected with the frame 32, the input shaft 2 is arranged on the frame 32 through a bearing and is arranged below the working surface of the transmission friction disc, the transmission shafts of the transmission friction discs are arranged on the frame 32 through bearings, and the output shaft 1, the input shaft 2, the gear transmission mechanism, the transmission friction discs with different gears, the output friction disc 10 and the gear shifting assembly are arranged in the transmission housing 3.
Further, the output shaft 1, the input shaft 2, and the shift spindle are arranged on the same axis.
The frame 32 is the platelike structure, the up end of frame 32 is equipped with the gear shift ring mounting groove and is used for installing gear shift ring 12, the up end of frame 32 still is equipped with the change gear groove 3204, the change gear groove 3204 is located the center of gear shift ring mounting groove, the change gear groove 3204 is used for installing the gear shift pivot, still be equipped with a plurality of friction disc mounting grooves 3201 along gear shift ring mounting groove circumference on the frame 32, the center of friction disc mounting groove 3201 is equipped with friction disc pivot mounting groove 3202, friction disc mounting groove 3201 is used for setting up each transmission friction disc, the transmission shaft of each transmission friction disc passes frame 32 to frame 32 below and is connected with gear drive mechanism from friction disc pivot mounting groove 3202, the up end of frame 32 still is equipped with motor mounting groove 3205, be used for installing gear shift motor 15, the lower terminal surface of frame 32 is equipped with bearing mounting groove 3207 and idler shaft 3206, the bearing mounting groove 3207 arranges in the center of gear shift ring mounting groove, be used for installing the bearing of input shaft 2.
The cross-sections of the frame 32 and the transmission housing 3 are circular.
The working principle of the invention is as follows: referring to fig. 1, in an initial state, the output friction disc 10 and the locking disc 11 are positioned on the same axis, and six locking blocks 36 are driven by hydraulic pressure to enter the locating pin chute 1105, so that the output friction disc 10 and the locking disc 11 cannot rotate, and at the moment, the friction wheel 1001 is in close contact with the three-gear transmission friction disc 4. And friction wheel link 1002 is now in smooth section 1201.
When power enters the transmission from the input shaft 2, the reverse gear drive gear 19, the first gear drive gear 22, the second gear drive gear 24, the third gear drive gear 26, the fourth gear drive gear 28 and the fifth gear drive gear 30 which are connected with the power from the input shaft 2 are driven, so that the reverse gear idler gear 20, the reverse gear output gear 21, the first gear output gear 23, the second gear output gear 25, the third gear output gear 27, the fourth gear output gear 29 and the fifth gear output gear 31 which are respectively meshed with the power are driven. So that the reverse gear transmission friction disk 7, the first gear transmission friction disk 8, the second gear transmission friction disk 9, the third gear transmission friction disk 4, the fourth gear transmission friction disk 5 and the fifth gear transmission friction disk 6 connected with the rotary shaft rotate. Since the third gear transmission friction disc 4 is in contact with the friction wheel 1001, the output friction disc 10 is rotated by friction transmission force, and the locking disc 11 is driven to rotate around the friction wheel link, and the first bevel gear 13 connected with the driving rotating shaft 1101 is driven, and the second bevel gear 14 meshed with the first bevel gear 13 is driven, so that power is finally transmitted to the output shaft 1.
When a gear shift is required, the locking driving motor 33 drives the hydraulic disc 34 to move away from the output friction disc 10 through the screw rod, so that the locking block 36 is separated from the positioning pin locking groove 1103, the output friction disc 10 can rotate along the rotating shaft 1106, at this time, the gear shift motor 15 rotates clockwise, so that the third bevel gear 16 connected with the gear shift motor rotates, and further drives the fourth bevel gear 17 meshed with the gear shift motor, so that the gear shift steering block 35 rotates around the gear shift groove 3204, and when the friction wheel connecting rod 1002 moves from the smooth section 1201 to the gear shift flange curved section 1202, the friction wheel 1001 is lifted and is not in tight contact with the three-gear transmission friction disc 4 any more, and compared with a traditional friction speed changer, low-loss gear shift is realized. Since the shift flange curved section 1202 is arc-shaped, and thus the output friction disk 10 falls back, and enters the smoothing section 1201 again, at this time the friction wheel 1001 is in contact with the fourth-gear transmission friction disk 5, at this time the lock drive motor 33 drives the hydraulic disk 34 to move in a direction approaching the output friction disk 10 by the lead screw, and further the lock block 36 is caused to enter precisely into the positioning pin lock groove 1103 under the guide action of the positioning pin chute 1105, so that the output friction disk 10 cannot rotate along the rotation shaft 1106, and positive pressure is provided so that the friction wheel 1001 is brought into close contact with the fourth-gear transmission friction disk 5, and the fourth-gear transmission friction disk 5 is higher in rotation speed because the fourth-gear drive gear 28 connected to the fourth-gear transmission friction disk 5 is smaller in size. And the rotation speed of the output shaft 1 is increased, and if the rotation speed needs to be reduced, the gear shifting motor 15 only needs to be controlled to rotate anticlockwise.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (9)
1. A friction transmission, characterized by: the gear shifting mechanism comprises an output shaft, an input shaft, a gear transmission mechanism, a plurality of transmission friction discs with different gears, an output friction disc and a gear shifting assembly, wherein the transmission friction discs with different gears are circumferentially distributed along the input shaft;
The gear shifting assembly comprises a gear shifting ring, a gear shifting motor, a driving rotating shaft, a gear shifting transmission mechanism and a gear shifting overturning locker, wherein the gear shifting motor is connected with the driving rotating shaft through the gear shifting transmission mechanism, the driving rotating shaft is connected with the friction wheel connecting rod through the gear shifting overturning locker, and the driving rotating shaft is connected with the output shaft through the output gear transmission mechanism;
The gear shifting ring is arranged at the inner ring of the distribution path circle and is arranged below the friction wheel connecting rod, the gear shifting ring comprises a bottom circular ring, a plurality of gear shifting flange curved sections are distributed on the bottom circular ring at intervals, a smooth section is arranged between every two adjacent gear shifting flange curved sections, a corresponding smooth section is arranged between the transmission friction plate and the axis of the input shaft, when the output friction plate rotates from one transmission friction plate to the next transmission friction plate along with the friction wheel connecting rod, the gear shifting overturning locker closes to enable the friction wheel connecting rod to rotate relative to the driving rotating shaft, the friction wheel connecting rod passes through the gear shifting flange curved sections, the friction wheel connecting rod and the output friction plate are jacked upwards, so that the output friction plate is separated from the corresponding transmission friction plate, when the output friction plate rotates to the corresponding transmission friction plate needing to be abutted, the friction wheel connecting rod falls into the corresponding smooth section, the friction wheel connecting rod falls down, the output friction plate contacts with the corresponding transmission friction plate, and the gear shifting overturning locker starts to lock the position between the friction wheel connecting rod and the driving rotating shaft, and the corresponding transmission friction plate is enabled to rotate tightly to be in contact with the corresponding transmission friction plate, and the corresponding transmission friction plate is enabled to be convenient to rotate tightly through the corresponding transmission friction plate.
2. The friction transmission as recited in claim 1 wherein: the gear shifting transmission mechanism comprises a gear shifting rotating shaft, a gear shifting motor, a third bevel gear, a fourth bevel gear and a gear shifting steering block, wherein the gear shifting steering block and the fourth bevel gear are arranged on the gear shifting rotating shaft, the gear shifting steering block is connected with the driving rotating shaft, the third bevel gear is arranged on an output shaft of the gear shifting motor, and the third bevel gear is meshed with the fourth bevel gear; the gear shifting motor drives a fourth bevel gear to rotate through a third bevel gear, the fourth bevel gear drives a gear shifting steering block to rotate through a gear shifting rotating shaft, and the gear shifting steering block drives a friction wheel connecting rod and an output friction coil to rotate through a driving rotating shaft.
3. The friction transmission as recited in claim 1 wherein: the output gear transmission mechanism comprises a first bevel gear and a second bevel gear, the first bevel gear is sleeved on the driving rotating shaft, the second bevel gear is arranged on the output shaft, and the first bevel gear is meshed with the second bevel gear; the driving rotation drives the first bevel gear to rotate, and the first bevel gear drives the output shaft to rotate through the second bevel gear.
4. The friction transmission as recited in claim 1 wherein: the gear shifting overturning locker comprises a locking driving motor, a hydraulic disc, locking blocks and a locking disc, wherein a friction wheel connecting rod is connected with a hydraulic rotating plate, the locking disc is connected with a driving rotating shaft through a connecting rod, the hydraulic rotating plate is connected with the locking disc through a rotating shaft, locking block sliding grooves are circumferentially distributed on the hydraulic rotating plate, the locking blocks are arranged in the locking block sliding grooves, and the locking disc is provided with positioning pin locking grooves which are consistent in number with the locking block sliding grooves and are arranged in a one-to-one correspondence manner;
The locking plate is positioned at one side of the hydraulic rotating plate, the other end of the hydraulic rotating plate is provided with a hydraulic cavity, a hydraulic plate driving cylinder is arranged on the hydraulic cavity, the hydraulic plate is arranged in the hydraulic plate driving cylinder, and the locking driving motor is connected with the hydraulic plate through a screw rod; the locking driving motor drives the hydraulic plate to move back and forth along the hydraulic plate driving cylinder through the screw rod, so that the driving locking block is inserted into the locating pin locking groove on the locking plate, and further the rotating position between the hydraulic rotating plate and the locking plate is locked, or the driving locking block is retracted and pulled out from the locating pin locking groove, and further the hydraulic rotating plate can rotate around the rotating shaft and the locking plate.
5. The friction transmission as recited in claim 4 wherein: the upper end face of the locating pin locking groove is provided with a locating pin chute, the lower end face of the locating pin locking groove is provided with a through hole, and the locating pin chute is used for discharging air in the locating pin locking groove from the through hole when the locking block is inserted into the locating pin locking groove.
6. The friction transmission as recited in claim 4 wherein: the number of the locating pin locking grooves is 2-6, and the locating pin locking grooves are distributed along the circumferential direction of the rotating shaft.
7. The friction transmission as recited in claim 1 wherein: the gear transmission mechanism comprises a pair of mutually meshed output gears and driving gears which are correspondingly arranged on each transmission friction disk, the driving gears are sequentially arranged on the input shaft, and the transmission friction disks are connected with the corresponding output gears through transmission shafts;
When one of the transmission friction discs is used as a reverse gear friction disc, the output gear and the driving gear which are correspondingly arranged on the reverse gear friction disc are a reverse gear output gear and a reverse gear driving gear, and the reverse gear output gear and the reverse gear driving gear are meshed through a reverse gear idler wheel.
8. The friction transmission as recited in claim 7 wherein: the number of the transmission friction discs is 6, namely a first gear transmission friction disc, a second gear transmission friction disc, a third gear transmission friction disc, a fourth gear transmission friction disc, a fifth gear transmission friction disc and a reverse gear transmission friction disc, wherein the first gear transmission friction disc, the second gear transmission friction disc, the third gear transmission friction disc, the fourth gear transmission friction disc, the fifth gear transmission friction disc and the reverse gear transmission friction disc are respectively connected with a corresponding first gear output gear, a second gear output gear, a third gear output gear, a fourth gear output gear, a fifth gear output gear and a reverse gear output gear through corresponding transmission shafts, the input shaft is sequentially provided with a first-gear driving gear, a second-gear driving gear, a third-gear driving gear, a fourth-gear driving gear, a fifth-gear driving gear and a reverse-gear driving gear, wherein the first-gear driving gear, the second-gear driving gear, the third-gear driving gear, the fourth-gear driving gear and the fifth-gear driving gear are respectively meshed with a first-gear output gear, a second-gear output gear, a third-gear output gear, a fourth-gear output gear and a fifth-gear output gear, a reverse-gear idler gear is arranged between the reverse-gear driving gear and the reverse-gear output gear, and the reverse-gear driving gear is meshed with the reverse-gear output gear through the reverse-gear idler gear.
9. The friction transmission as recited in claim 1 wherein: the friction speed changer also comprises a speed changer shell and a frame, wherein the speed changer shell is connected with the frame, an input shaft is arranged on the frame through a bearing and is arranged below a working surface of a transmission friction disc, a transmission shaft of each transmission friction disc is arranged on the frame through a bearing, and an output shaft, the input shaft, a gear transmission mechanism, a plurality of transmission friction discs with different gears, an output friction disc and a gear shifting assembly are arranged in the speed changer shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311320703.8A CN117329280B (en) | 2023-10-12 | 2023-10-12 | Friction speed changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311320703.8A CN117329280B (en) | 2023-10-12 | 2023-10-12 | Friction speed changer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117329280A CN117329280A (en) | 2024-01-02 |
| CN117329280B true CN117329280B (en) | 2024-04-30 |
Family
ID=89278873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311320703.8A Active CN117329280B (en) | 2023-10-12 | 2023-10-12 | Friction speed changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117329280B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114576A (en) * | 2015-09-18 | 2015-12-02 | 湖南农业大学 | Dual-spherical disc type stepless transmission |
| CN111188879A (en) * | 2020-02-18 | 2020-05-22 | 雷兵 | Speed variator |
| CN112855874A (en) * | 2021-01-28 | 2021-05-28 | 雷兵 | Speed changer |
| CN116592102A (en) * | 2023-05-17 | 2023-08-15 | 武汉洋葱云网技术有限公司 | Friction type step-variable transmission with long service life for vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110059821A1 (en) * | 2009-09-08 | 2011-03-10 | Vmt Technologies, Llc | Infinitely variable transmission |
-
2023
- 2023-10-12 CN CN202311320703.8A patent/CN117329280B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114576A (en) * | 2015-09-18 | 2015-12-02 | 湖南农业大学 | Dual-spherical disc type stepless transmission |
| CN111188879A (en) * | 2020-02-18 | 2020-05-22 | 雷兵 | Speed variator |
| CN112855874A (en) * | 2021-01-28 | 2021-05-28 | 雷兵 | Speed changer |
| CN116592102A (en) * | 2023-05-17 | 2023-08-15 | 武汉洋葱云网技术有限公司 | Friction type step-variable transmission with long service life for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117329280A (en) | 2024-01-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201747872U (en) | Transmission case main shaft gear positioning mechanism of heavy-duty truck | |
| CN117329280B (en) | Friction speed changer | |
| CN208535127U (en) | A kind of mixed dynamic transmission countershaft assembly of double clutches | |
| CN111075913B (en) | Speed changing method for surrounding type common rail in-line gearbox | |
| CN111396512A (en) | Dry-type double-clutch two-gear gearbox and power assembly of electric automobile | |
| CN210510172U (en) | Three-gear variable-speed transmission mechanism | |
| JPH10288062A (en) | Hydraulic drive device for construction machinery | |
| CN106838145A (en) | A kind of low consumption noise reduction commercial car speed changer | |
| CN220151828U (en) | Driving axle transmission mechanism with differential lock function | |
| CN219687068U (en) | Driving axle transmission mechanism without clutch gear shifting | |
| CN201027926Y (en) | Gear box | |
| CN219339109U (en) | Electric drive axle and vehicle | |
| CN217207655U (en) | Gear shifting mechanism | |
| CN212080062U (en) | Dry-type double-clutch two-gear gearbox and power assembly of electric automobile | |
| CN218377543U (en) | Compact twelve-gear gearbox | |
| CN219605959U (en) | Gearbox transmission device of 340-400 horsepower tractor | |
| CN219492888U (en) | Synchronizer of planetary gear transmission | |
| CN221033872U (en) | Gear box | |
| CN116538247B (en) | 16 keep off power shift derailleur | |
| CN217074010U (en) | Electric drive axle assembly and vehicle | |
| CN217381500U (en) | Worm gear differential device | |
| CN221054177U (en) | Planetary gear structure rear auxiliary box synchronizer and speed changer | |
| CN216112045U (en) | Derailleur jackshaft and derailleur | |
| CN220168485U (en) | Multi-gear four-wheel-drive off-road forklift gearbox with short forward transmission chain | |
| CN217355455U (en) | Rearmounted speed change mechanism of gearbox |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |