CN112747092A - Diagonal connection steel chain stepless speed changing box - Google Patents
Diagonal connection steel chain stepless speed changing box Download PDFInfo
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- CN112747092A CN112747092A CN201911078661.5A CN201911078661A CN112747092A CN 112747092 A CN112747092 A CN 112747092A CN 201911078661 A CN201911078661 A CN 201911078661A CN 112747092 A CN112747092 A CN 112747092A
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- chain
- cone pulley
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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
- F16H9/24—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using chains or toothed belts, belts in the form of links; Chains or belts specially adapted to such gearing
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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
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G15/00—Chain couplings, Shackles; Chain joints; Chain links; Chain bushes
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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
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G15/00—Chain couplings, Shackles; Chain joints; Chain links; Chain bushes
- F16G15/12—Chain links
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmissions By Endless Flexible Members (AREA)
Abstract
The invention relates to the technical field of continuously variable transmissions. This diagonal shaft connects steel chain continuously variable transmission, its characterized in that mainly includes: the chain link friction kicking piece comprises an input movable cone pulley (3), an input fixed cone pulley (6), an output fixed cone pulley (12), a chain link friction kicking piece (13), a chain link connecting piece (14), a chain link shaft (15) and an output movable cone pulley (16). Two ends of two link shafts (15) of the steel chain are respectively fixed with a chain link friction kicking sheet (13); the chain links are connected with each other diagonally and crosswise by a plurality of chain link connecting sheets (14); two adjacent chain links are symmetrical by the bisector of the included angle of the central lines of the two chain links; the V-shaped surfaces of the friction kicking sheets (13) at the two ends of the chain link are contacted with the tangent lines of the V-shaped surfaces of the two groups of cone pulleys, and the contact lines are also the center lines of the friction surfaces of the friction kicking sheets (13). And simultaneously, the distance between the movable cone pulley (3) and the input fixed cone pulley (6) and the distance between the output movable cone pulley (16) and the output fixed cone pulley (12) are adjusted, and the circumference of the motion track of a friction pair formed by the joint of the chain links and the V-shaped surface of the cone pulley set is correspondingly changed.
Description
The invention relates to the technical field of continuously variable transmissions.
At present, automobile gearboxes are divided into a multi-stage gearbox and a stepless gearbox, each gear of the multi-stage gearbox corresponds to a transmission ratio, the change of the transmission ratio is completed by meshing switching gears, so that the gear shifting is interrupted, and the transmission ratio of each gear can not completely meet the requirements of each working condition on power control and energy conservation. The existing continuously variable transmission is a CVT steel belt continuously variable transmission used on a low-power car. The steel belt is the core of the CVT transmission. The CVT steel belt is similar to a steel belt of a band sawing machine, multiple layers of steel belts are overlapped and connected end to form a ring, countless friction tin sheets are carried on one side of the steel belt, and transmission between two cone pulley sets is realized by friction of friction kicking sheets and cone pulleys. Because the tensile strength of the steel belt of the CVT steel belt stepless gearbox is low, the power transmission capability is weak; the steel belt tension direction is not in the symmetrical center of the friction surface of the friction kicking piece, the friction kicking piece rotates under the action of the steel belt tension during transmission, the steel belt friction kicking piece and the contact surface of the cone pulley cannot be tangent all the time, and the phenomenon of slipping occurs when large torque is transmitted; the steel belt is bent in multiple directions to cause mechanical fatigue and influence the service life, so that the tensioning wheel cannot be used to enable the steel belt to surround the conical wheel surface in a larger circumferential range; the steel belt is not tightened by the tensioning wheel, and can generate transverse vibration during movement, so that the service life of the steel belt is not favorable. Therefore, the CVT steel belt stepless speed changing box is not suitable for high-power and high-torque transmission. The diagonal cross connecting sheet is used for connecting diagonal shafts of two chain links, and adjacent chain links are symmetrical by an included angle bisector of central lines of the two chain links, so that when a large relative acting force is generated between a chain link friction kicking surface and a cone pulley surface, the chain links cannot rotate, the chain link kicking surface and the cone pulley surface are always in contact with a large contact surface, and the chain link kicking surface and the cone pulley surface cannot slip; the tension pulley can enable the steel chain to be retracted towards the middle, the circumferential range of the steel chain wound in the cone pulley is larger, so that more chain links attached to the cone pulley surface are provided, and the friction between the chain links and the cone pulley surface is larger; meanwhile, a plurality of connecting piece shaft pins are arranged between the chain links for connection, so that the whole chain has high tensile strength and can be used for power transmission with high power and high torque.
The invention aims to provide a steel chain stepless gearbox, which solves the problems that the multi-stage gearbox is unsmooth in gear shifting and the stepless steel belt gearbox cannot be used for high-power and high-torque transmission. Meanwhile, the power controllability of the automobile and the speed change smoothness of the transmission equipment can be improved.
The technical scheme of the invention is realized by that two bevel wheel sets are driven by a closed steel chain, one chain link of the steel chain is provided with two link shafts (15) and two chain link friction kicking sheets (13), and two ends of each link shaft (15) are respectively fixed with one chain link friction kicking sheet (13); the chain links are connected with the chain links through a plurality of chain link connecting sheets (14), each chain link connecting sheet (14) is provided with two shaft holes, one shaft hole is connected with an upper chain link shaft (15) of the left chain link, the other shaft hole of the chain link connecting sheet (14) is connected with a lower chain link shaft (15) of the right chain link, the two shaft holes of the next chain link connecting sheet (14) are respectively connected with the lower chain link shaft (15) of the left chain link and the upper chain link shaft (15) of the right chain link, and the two chain link connecting sheets (14) form a diagonal cross connection mode. Two diagonal cross connecting pieces (14) are in a group, and two chain links are provided with a plurality of groups of diagonal cross connecting pieces (14) which are connected with corresponding chain link shafts (15). The chain links connected by the diagonal cross connecting sheets (14) are symmetrical by the included angle bisector of the central lines of two adjacent chain links. Meanwhile, the included angle of the two chain links can be changed. A plurality of links are connected by diagonal cross links (14) to form a chain-like flexible steel chain structure.
The friction surfaces on both sides of the chain link friction kicking sheet (13) of each chain link are V-shaped. The included angle between the input fixed cone pulley (6) and the input movable cone pulley (3) of the gearbox and the included angle between the output fixed cone pulley (12) and the output movable cone pulley (16) are also V-shaped. The V-shaped surface of the friction kicking sheets (13) at the two ends of the chain link is tangent to the V-shaped surfaces of the two groups of cone pulleys, and the V-shaped surfaces are in line contact with the V-shaped surfaces.
The input movable cone pulley (3) and the input fixed cone pulley (6) which are coaxially arranged on the input shaft (9) form an input cone pulley group, the input fixed cone pulley (6) and the input shaft (9) are fixedly arranged, and the input movable cone pulley (3) can axially slide on the input shaft (9) by a spline. The output fixed cone pulley (12) and the output movable cone pulley (16) form an output cone pulley group which is coaxially arranged on the output shaft (11), the output fixed cone pulley (12) and the output shaft (11) are fixedly arranged, and the output movable cone pulley (16) can axially slide on the output shaft (11) through a spline.
The diagonal cross chain link connecting sheet (14) is used for connecting diagonal axes of two chain links, so that when the chain links are bent, adjacent chain links are symmetrically restrained by an included angle bisector of central lines of the two chain links, and the chain links cannot rotate when large relative acting force exists between friction kicking surfaces of the chain links and cone pulley surfaces; v-shaped surfaces of chain link friction kicking sheets (13) at two ends of the chain link can be in line contact with the corresponding V-shaped surfaces of the conical disc all the time, contact lines are tangent lines of contact surfaces and are also central lines of friction surfaces of the chain link friction kicking sheets (13), and the contact between the kicking surfaces of the chain link friction kicking sheets (13) and conical wheel surfaces is good; in addition, the tension wheel (4) can enable the steel chain to be retracted towards the middle, the circumferential range of the steel chain wound in the conical pulley is larger, more chain links attached to the pulley surface are provided, and the friction range between the chain links and the conical pulley surface is larger; meanwhile, a plurality of connecting piece shaft pins are arranged between the chain links for connection, and the tensile strength of the whole chain is higher than that of a steel belt.
The shift lever (10) is pushed counterclockwise and the shift lever gear (20) rotates counterclockwise. Under the meshing action of a gear lever gear (20), an input speed change gear (8) and an output gear (19), the input speed change gear (8) and the output speed change gear (19) respectively drive an input speed change screw rod (1) and an output speed change screw rod (18) to rotate clockwise, and under the threaded connection action, the input speed change screw rod (1) and the output speed change screw rod (18) respectively drive an input speed change deflector rod (2) and an output speed change deflector rod (17) to move towards the directions of the input speed change gear (8) and the output gear (19).
The input speed change deflector rod (2) pushes the input movable cone pulley (3) to apply an acting force to the input fixed cone pulley (6) along the axial direction, the acting force enables a chain link wound on the V-shaped surface of the input cone pulley set to generate an outward expansion component force, the expansion force is larger than the tightening force generated by the tension pulley (4), the distance between the input movable cone pulley (3) and the input fixed cone pulley (6) is reduced, a steel chain wound on the input cone pulley set expands outward, and the circumference of a friction pair motion track formed by the joint of the chain link and the V-shaped surface of the input cone pulley set is enlarged.
The output speed change deflector rod (17) moves towards the direction of an output speed change gear (19), the thrust of the speed change deflector rod (17) to an output movable cone pulley (16) is weakened, the axial component force generated by the tightening force (generated by the matching of a tightening pulley) of a steel chain in the V-shaped surface of the output cone pulley set pushes the output movable cone pulley (16) to move towards the direction far away from the output fixed cone pulley (12), the distance between the output movable cone pulley (16) and the output fixed cone pulley (12) is increased, the steel chain around the output cone pulley set is contracted inwards under the action of the tightening force of the tightening pulley (4), and the circumference of a friction pair motion track formed by the joint of a chain link and the V-shaped surface of the output cone pulley set is reduced.
The gear lever (10) is pushed in the anticlockwise direction, the circumference of a motion track of a friction pair formed by the joint of the chain link and the V-shaped surface of the input bevel wheel set is increased, the circumference of a motion track of the friction pair formed by the joint of the chain link and the V-shaped surface of the output bevel wheel set is decreased, and the rotating speed of the output shaft (11) is increased under the condition that the rotating speed of the input shaft (9) is not changed. Each corner part of the gear lever (10) corresponds to the rotating speed ratio between the input shaft (9) and the output shaft (11), so stepless smooth speed regulation can be realized.
The chain links are connected in a diagonal cross manner by the connecting sheets, the steel chain has high tensile strength, large friction force of a friction pair, large load and smooth speed change, and the smoothness of the whole vehicle power controllability and speed ratio control can be improved when the steel chain is used for a vehicle.
Description of the drawings:
FIG. 1 is a front view of a diagonal connection steel chain stepless transmission
FIG. 2 is a sectional view of the contact surface of the diagonal connection steel chain stepless speed changing box chain link and the cone pulley
FIG. 3 is a schematic diagram of the operation of a diagonal connection steel chain stepless transmission tension pulley
The invention is described in detail below with reference to the following description of the drawings.
As shown in figure 1, the diagonal shaft connection steel chain continuously variable transmission comprises an input speed change screw rod (1), an input speed change deflector rod (2), an input movable cone pulley (3), a tension pulley (4), a tension pulley support (5), an input fixed cone pulley (6), a shell (7), an input speed change gear (8), an input shaft (9), a gear lever (10), an output shaft (11), an output fixed cone pulley (12), a chain link friction kicking sheet (13), a chain link connecting sheet (14), a chain link shaft (15), an output movable cone pulley (16), an output speed change deflector rod (17), an output speed change screw rod (18), an output gear (19) and a gear lever (20).
As shown in fig. 1, the input shaft (9) and the output shaft (11) are rotatably mounted on the housing (7) in parallel.
As shown in figure 1, the input movable cone pulley (3) and the input fixed cone pulley (6) form an input cone pulley group which is coaxially arranged on the input shaft (9), the input fixed cone pulley (6) and the input shaft (9) are fixedly arranged, and the input movable cone pulley (3) can axially slide on the input shaft (9) by a spline. The output fixed cone pulley (12) and the output movable cone pulley (16) form an output cone pulley group which is coaxially arranged on the output shaft (11), the output fixed cone pulley (12) and the output shaft (11) are fixedly arranged, and the output movable cone pulley (16) can axially slide on the output shaft (11) through a spline. The integral steel chain is wound between the input cone pulley set and the output cone pulley set in a closed loop mode.
As shown in fig. 2, two link shafts (15) and two link friction kickers (13) are arranged on one link of the steel chain, and one link friction kicker (13) is respectively fixed at two ends of each link shaft (15); the chain links are connected with the chain links through a plurality of chain link connecting sheets (14), each chain link connecting sheet (14) is provided with two shaft holes, one shaft hole is connected with an upper chain link shaft (15) of the left chain link, the other shaft hole of the chain link connecting sheet (14) is connected with a lower chain link shaft (15) of the right chain link, the two shaft holes of the next chain link connecting sheet (14) are respectively connected with the lower chain link shaft (15) of the left chain link and the upper chain link shaft (15) of the right chain link, and the two chain link connecting sheets (14) form a diagonal cross connection mode. Two diagonal cross connecting pieces (14) are in a group, and two chain links are provided with a plurality of groups of diagonal cross connecting pieces (14) which are connected with corresponding chain link shafts (15). The chain links connected by the diagonal cross connecting sheets (14) are symmetrical by the included angle bisector of the central lines of two adjacent chain links. Meanwhile, the included angle of the two chain links can be changed. A plurality of links are connected by diagonal cross links (14) to form a chain-like flexible steel chain structure.
As shown in figure 2, the two tensioning wheels (4) press the steel chain towards the middle by the springs on the tensioning wheel brackets (5), and the steel chain wound on the two cone pulley sets is tightened towards the center of the cone pulley to form a pre-tightening force. Meanwhile, the tension wheel (4) enables the steel chain to bend inwards, friction pairs which are wound on the cone pulley and tangent to the V-shaped surface of the cone pulley are increased, and the friction force between the cone pulley and the whole steel chain is increased.
As shown in figure 2, the two tensioning wheels (4) press the steel chain towards the middle by the springs on the tensioning wheel brackets (5), and the steel chain wound on the two cone pulley sets is tightened towards the center of the cone pulley to form a pre-tightening force. Meanwhile, the tension wheel (4) enables the steel chain to bend inwards, friction pairs which are wound on the cone pulley and tangent to the V-shaped surface of the cone pulley are increased, the friction range between the chain links and the cone pulley surface is larger, and the friction force between the cone pulley and the whole steel chain is increased.
As shown in figure 3, the friction surfaces on both sides of the chain link friction kicking sheet (13) of each chain link are V-shaped. The included angle between the input movable cone pulley (3) and the input fixed cone pulley (6) of the gearbox is also V-shaped, and the included angle between the output fixed cone pulley (12) and the output movable cone pulley (16) is also V-shaped. The V-shaped surfaces of the friction kicking sheets (13) at the two ends of the chain link are tangent to the V-shaped surfaces of the two groups of cone pulleys, the V-shaped surfaces are in line contact with the V-shaped surfaces, and the contact line is also the center line of the friction surface of the friction kicking sheets (13).
As shown in fig. 3, the input cone pulley set drives the friction amplitude to rotate actively, and drives the whole steel chain wound in the two cone pulleys to move, and the steel chain drives the output cone pulley set to rotate by virtue of a friction pair formed by the output cone pulley set and the chain link, so that a transmission mechanism of the cone pulleys and the steel chain is formed.
As shown in fig. 3, the shift lever (10) is pushed counterclockwise and the shift lever gear (20) rotates counterclockwise. Under the meshing action of a gear lever gear (20), an input speed change gear (8) and an output speed change gear (19), the input speed change gear (8) and the output gear (19) respectively drive an input speed change screw rod (1) and an output speed change screw rod (18) to rotate clockwise, and under the threaded connection action, the input speed change screw rod (1) and the output speed change screw rod (18) respectively drive an input speed change deflector rod (2) and an output speed change deflector rod (17) to move towards the directions of the input speed change gear (8) and the output speed change gear (19).
As shown in fig. 3, the input shift lever (2) pushes the input movable cone pulley (3) to apply an acting force to the input fixed cone pulley (6) along the axial direction, the acting force causes a chain link on the V-shaped surface of the input cone pulley set to generate an outward expansion component force, the expansion force is greater than a tightening force generated by the tension pulley (4), the steel chain around the output cone pulley set expands outward, the distance between the input movable cone pulley (3) and the input fixed cone pulley (6) decreases, and the circumference of a friction pair motion track formed by the joint of the chain link and the V-shaped surface of the input cone pulley set increases.
As shown in fig. 3, the output speed change shift lever (17) moves towards the output speed change gear (19), the thrust of the speed change shift lever (17) to the output movable cone pulley (16) is weakened, the axial component force generated by the tightening force (generated by the tightening of the tightening pulley) of the steel chain in the V-shaped surface of the output cone pulley set pushes the output movable cone pulley (16) to move towards the direction far away from the output fixed cone pulley (12), the distance between the output movable cone pulley (16) and the output fixed cone pulley (12) is increased, the steel chain around the output cone pulley set contracts inwards under the action of the tightening force of the tightening pulley (4), and the circumference of the motion track of a friction pair formed by the joint of the chain link and the V-shaped surface of the output cone pulley set is reduced.
As shown in figure 3, when the gear lever (10) is pushed in the anticlockwise direction, the motion track circumference of a friction pair formed by the joint of the chain link and the V-shaped surface of the input bevel wheel set is increased, the motion track circumference of the friction pair formed by the joint of the chain link and the V-shaped surface of the output bevel wheel set is decreased, and under the condition that the rotation speed of the input shaft (9) is not changed, the rotation speed of the output shaft (11) is increased under the transmission action of a steel chain. Each rotation angle of the gear lever (10) corresponds to the rotation speed ratio between the input shaft (9) and the output shaft (11), so stepless smooth speed regulation can be realized.
The diagonal cross chain link connecting sheet (14) is used for connecting diagonal shafts of the two chain links, so that when the chain links are bent, the adjacent chain links are symmetrically restrained by the central lines of the two chain links, and the chain links cannot rotate when large relative acting force exists between the friction kicking surfaces of the chain links and the conical pulley surface; v-shaped surfaces of chain link friction kicking sheets (13) at two ends of each chain link contacted with the cone pulley can be contacted with corresponding V-shaped surfaces of the cone pulley by lines, contact lines are tangent lines of contact surfaces and also are central lines of friction surfaces of the chain link friction kicking sheets (13), and the contact between the kicking surfaces of the chain link friction kicking sheets (13) and the cone pulley surface is better; in addition, the tension wheel (4) can enable the steel chain to be retracted inwards, the circumferential range of the steel chain wound in the cone pulley is larger, more chain links attached to the cone pulley surface are provided, and the friction range between the chain links and the cone pulley surface is larger; meanwhile, a plurality of connecting piece shaft pins are arranged between the chain links for connection, and the tensile strength of the whole chain is high.
Meanwhile, the input movable cone pulley (3) and the output movable cone pulley (16) are pushed to simultaneously move towards one direction along the axial direction, the distance between the two cone pulleys of the input cone pulley set is increased or decreased, the distance between the two cone pulleys of the output cone pulley set is decreased or increased, the circumferential diameter of a steel chain wound on the input cone pulley set is decreased or increased, the circumferential diameter of the steel chain wound on the output cone pulley set is increased or decreased, the transmission ratio between the input shaft (9) and the output shaft (11) is decreased or increased, and stepless smooth speed regulation can be realized.
Claims (6)
1. The utility model provides a diagonal axis connection steel chain continuously variable transmission, by input variable speed lead screw (1), input variable speed driving lever (2), input moves cone pulley (3), take-up pulley (4), take-up pulley support (5), input fixed cone pulley (6), casing (7), input change gear (8), input shaft (9), gear lever (10), output shaft (11), output fixed cone pulley (12), chain link friction kicking piece (13), chain link connection piece (14), chain link axle (15), output moves cone pulley (16), output variable speed driving lever (17), output variable speed lead screw (18), output gear (19), gear lever gear (20) are constituteed. The method is characterized in that:
(1) two steel chain link shafts (15) are aligned in parallel, and two ends of each steel chain link shaft are fixedly installed with the friction kicking pieces (13) respectively to form a chain link.
(2) The link connecting plates (14) are diagonally crossed to connect the link shafts (15) of the two links, and the links and the connecting plates (14) are connected to form a closed loop to form the steel chain.
(3) Two tensioning wheels (4) are assembled on the tensioning wheel support (5), and the tensioning wheels (4) are tensioned towards the middle under the action of springs.
2. The diagonal shaft connection steel chain continuously variable transmission as claimed in one of the claims, wherein two link shafts (15) and two link friction kickers (13) are arranged on one link, and one link friction kicker (13) is respectively fixed at two ends of each link shaft (15); each chain link connecting piece (14) is provided with two shaft holes, one shaft hole is connected with an upper chain link shaft (15) of the left chain link, the other shaft hole is connected with a lower chain link shaft (15) of the right chain link, the two shaft holes of the next chain link connecting piece (14) are respectively connected with the lower chain link shaft (15) of the left chain link and the upper chain link shaft (15) of the right chain link, and the two chain link connecting pieces (14) form a diagonal cross connection mode. Two diagonal cross connecting pieces (14) are in a group, and two adjacent chain links are provided with a plurality of groups of diagonal cross connecting pieces (14) which are connected with corresponding link shafts (15). Two adjacent chain links are symmetrical by the bisector of the included angle of the central lines of the two chain links. When the friction kicking surface of the chain link and the cone pulley surface have larger relative acting force, the chain link can not rotate. The included angle of the central lines of the two chain links is variable, and the whole steel chain can be bent.
3. The diagonal shaft connecting steel chain continuously variable transmission according to claim two, wherein diagonal cross link connecting plates (14) are used for connecting diagonal shafts of two chain links, adjacent chain links are symmetrically restrained by an included angle bisector of central lines of the two chain links, V-shaped surfaces of chain link friction kicking plates (13) at two ends of each chain link contacted with a cone pulley can be contacted with V-shaped surfaces of corresponding cone disks, contact lines are tangent lines of contact surfaces and central lines of friction surfaces of the chain link friction kicking plates (13), and the contact between the kicking surfaces of the chain link friction kicking plates (13) and the cone pulley surface is better; in addition, the tension wheel (4) can enable the steel chain to be retracted inwards, the circumferential range of the steel chain wound in the cone pulley is larger, more chain links attached to the cone pulley surface are provided, and the friction range between the chain links and the cone pulley surface is larger; meanwhile, a plurality of connecting piece shaft pins are arranged between the chain links for connection, and the whole chain has higher tensile strength.
4. The diagonal axle-connected steel chain continuously variable transmission according to claim one, wherein the invention pushes the shift lever (10) counterclockwise and the shift lever gear (20) rotates counterclockwise. Under the meshing action of a gear lever gear (20), an input speed change gear (8) and an output speed change gear (19), the input speed change gear (8) and the output speed change gear (19) respectively drive an input speed change screw rod (1) and an output speed change screw rod (18) to rotate clockwise, and under the action of threaded connection, the input speed change screw rod (1) and the output speed change screw rod (18) respectively drive an input speed change deflector rod (2) and an output speed change deflector rod (17) to simultaneously move towards the directions of the input speed change gear (8) and the output speed change gear (19), so that the function of a speed change mechanism is realized.
5. The diagonal shaft connection steel chain continuously variable transmission according to the claim, the invention is that through the pushing action of the gear shift lever (10) and the gear shift mechanism, when the distance between the input movable cone pulley (3) and the input fixed cone pulley (6) is reduced, the circumference of the motion track of the friction pair formed by the joint of the chain links and the V-shaped surface of the input cone pulley set is enlarged; meanwhile, the distance between the output movable cone pulley (16) and the output fixed cone pulley (12) is correspondingly increased, and the circumference of a motion track of a friction pair formed by the joint of a chain link and the V-shaped surface of the output cone pulley set is correspondingly reduced; under the action of a speed change mechanism and the action of steel chain transmission, each rotating angle of the gear lever (10) corresponds to the rotating speed ratio between the input shaft (9) and the output shaft (11), and stepless smooth speed regulation of the gearbox can be realized.
6. The diagonal shaft connecting steel chain continuously variable transmission as claimed in one of the claims, wherein two tension pulleys (4) press the steel chain towards the middle by a spring on a tension pulley bracket (5), and the steel chain wound on two cone pulley sets is tightened towards the center of the cone pulley to form a pre-tightening force. Meanwhile, the tension wheel (4) enables the steel chain to bend inwards, friction pairs which are wound on the cone pulley and attached to the V-shaped surface of the cone pulley are increased, the friction range between the chain links and the cone pulley surface is larger, and the friction force between the cone pulley and the whole steel chain is favorably improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911078661.5A CN112747092A (en) | 2019-10-30 | 2019-10-30 | Diagonal connection steel chain stepless speed changing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911078661.5A CN112747092A (en) | 2019-10-30 | 2019-10-30 | Diagonal connection steel chain stepless speed changing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112747092A true CN112747092A (en) | 2021-05-04 |
Family
ID=75645084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911078661.5A Pending CN112747092A (en) | 2019-10-30 | 2019-10-30 | Diagonal connection steel chain stepless speed changing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112747092A (en) |
-
2019
- 2019-10-30 CN CN201911078661.5A patent/CN112747092A/en active Pending
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Application publication date: 20210504 |