Cone disc type stepless speed change transmission device pressurized by movable cone disc

Abstract

The utility model belongs to the technical field of transmissions, and relates to a cone disc type stepless speed change transmission device pressurized by a movable cone disc, which comprises a first-shaft cone disc unit, a second-shaft cone disc unit, an annular transmission part used for being in transmission connection with the first-shaft cone disc unit and the second-shaft cone disc unit, a thrust unit and a torsion unit, the thrust unit comprises a main thrust disc arranged at the non-conical-surface end of a first shaft moving conical disc, and the main thrust disc is connected with a first shaft in a circumferential fixing and axial moving mode. Torque is transmitted between the main thrust disc and the first shaft moving cone disc, axial thrust can be generated on the first shaft moving cone disc, and meanwhile clamping force needed by torque transmission of the annular transmission piece is formed. The axial stroke generated by mutual rotation between the main thrust disc and the first shaft moving cone disc is matched with the axial stroke needed by speed regulation of the first shaft moving cone disc. The torsion unit comprises a main torsion disc which is arranged on the first shaft in a sleeving mode in an axial sliding and circumferential fixing mode, and the main torsion disc is used for providing forward rotation torque for the power source.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of transmission, and relates to a cone disc type stepless speed change transmission device with dynamic cone disc pressurization. BACKGROUND

[0002] The cone disc type stepless speed change transmission device establishes rolling friction to realize power transmission through the clamping of the two pairs of conical surfaces of the cone discs on the annular transmission member (metal belt, rubber belt, etc.); the speed is adjusted by changing the rolling radius of the annular transmission member on the cone discs; when the annular transmission member transmits the same torque at different working radii, the required clamping force is negatively correlated with the working radius; the technical upgrading of the cone disc type stepless speed change transmission device mainly focuses on the breakthrough of the pressurized clamping force system and the speed adjustment system (referred to as speed adjustment).

[0003] The common cone disc type stepless speed change transmission device uses a hydraulic system to establish thrust to provide clamping force and speed adjustment force for the dynamic cone disc, and the disadvantages are as follows: 1. power transmission lag (meat); 2. excessive clamping force needs to be established to reduce impact damage, which reduces the service life, reliability and mechanical transmission efficiency; 3. the manufacturing process and control system of the hydraulic system are complex, and the cost is high; 4. the speed adjustment thrust demand is large, which leads to high cost of the hydraulic pump and its control system. The above performance shortcomings and cost factors limit the application of this scheme in a wider field (such as heavy-duty trucks, medium and large agricultural tractors, and some wind turbines).

[0004] To solve the problems of the above-mentioned hydraulic scheme, the existing technology attempts to provide the required clamping force for power transmission through a slope pressurization structure, that is, the clamping steel ball rolls and twists to generate clamping force; the advantage of the slope pressurization structure is that it can provide the required clamping force in real time during power transmission, avoiding the shortcomings of the hydraulic system providing clamping force.

[0005] It is found in practice that the existing slope pressurization structure has the following problems: 1. the slope pressurization structure is arranged on the side of the dynamic cone disc, and cannot reversely transmit torque, such as the process of switching from the reverse traction working condition of the electric vehicle to the braking energy recovery working condition; 2. the slope pressurization structure has mechanical clearance due to the wear, non-elastic elongation and assembly of the annular transmission member, which causes oscillation impact (test data is shown in the following table) during power transmission; 3. the slope pressurization structure is arranged on the side of the fixed cone disc, and the excessive clamping force leads to low mechanical transmission efficiency; 4. the slope pressurization structure is arranged on the side of the fixed cone disc, and the active speed adjustment system has poor adaptability (high cost and the performance of the parts cannot meet the use requirements). Figure 14

[0006] ​The patent document with patent number DE000010139119 discloses a technical solution of providing clamping force to the driving cone plate through the slope surface pressure structure, but the problems of impact and reverse power transmission are still not solved. The patent document with publication number CN117386773A discloses a technical solution of providing clamping force to the fixed cone plate through the slope surface pressure structure, and the driving cone plate of the driving shaft and the driven shaft is synchronously and axially moved by the reduction motor system and its actuator to adjust the speed. However, the following shortcomings exist: 1. The scheme attempts to reduce the impact (angular momentum) by changing the transmission path of the pre-tightening elastic component, but the key idea is still to eliminate the mechanical gap by extending the pre-tightening elastic component to push the slope surface pressure structure and the cone plate to move axially, and the oscillation impact problem still exists when the power is transmitted to compress the pre-tightening elastic component; 2. The slope surface pressure structure is arranged on the side of the fixed cone plate, and the size of the slope surface raceway angle corresponding to different transmission ratios cannot be reasonably matched, resulting in excessive clamping force, which reduces the mechanical transmission efficiency and service life; 3. The electromechanical speed regulation system increases the cost, complicates the structure, and reduces the reliability; 4. The electromechanical speed regulation system needs to be configured with four bearings to isolate the speed of the speed regulation system, which reduces the mechanical transmission efficiency; 5. For the cone plate type continuously variable transmission used in medium and large vehicles (such as power source torque above 400 Nm), the maximum speed regulation thrust will exceed 10 tons, and the speed will exceed 8000 rpm, so the physical limit of the thrust bearing cannot effectively adapt to such working condition requirements, which limits the application and promotion of the scheme.

[0007] In order to simplify the speed regulation structure and reduce the system cost, the patent document with publication number CN114838098A discloses a slope surface pressure structure and a driving pressure elastic component arranged in series on the driving cone plate of the driving shaft to provide the required clamping force and axial displacement for speed regulation, and a reduction motor system and its actuator are arranged on the driven shaft to drive the driven cone plate of the driven shaft for active speed regulation. The disadvantages of the scheme are: 1. The slope surface pressure structure still produces impact during the process of transmitting power to compress the driving pressure elastic component and the power transmission in forward and reverse directions, which reduces the service life and reliability; 2. When small and medium torque is transmitted, the driving pressure elastic component has the problem of excessive clamping force, which reduces the mechanical efficiency; 3. The scheme still has an active speed regulation electromechanical system, which cannot further reduce the cost; 4. The electromechanical speed regulation system still needs to be provided with a bearing to withstand large thrust and high speed, which reduces the mechanical transmission efficiency, and the poor adaptability of the thrust bearing limits the application field of the scheme. Practical new type

[0008] Therefore, the main purpose of the utility model is to provide a driving cone plate pressure cone plate type continuously variable transmission device to solve the problems of the existing slope surface pressure structure arranged on the driving cone plate, which cannot transmit power in reverse, the transmission of power has oscillation impact, and the active speed regulation system cannot be effectively adapted and has high cost.

[0009] To achieve the above object, the utility model provides the following technical scheme:

[0010] A cone disc type continuously variable transmission device with a moving cone disc and pressure, comprising a shaft cone disc unit, a second shaft cone disc unit, and a ring transmission element for transmission connection between the shaft cone disc unit and the second shaft cone disc unit, the shaft cone disc unit comprises a shaft, a shaft fixed cone disc and a shaft moving cone disc, the shaft fixed cone disc is sleeved on the shaft in a rotatable and axially fixed manner in at least one direction, the shaft moving cone disc is sleeved on the shaft fixed cone disc in a circumferentially fixed and axially sliding manner, the second shaft cone disc unit comprises a second shaft, and a second shaft fixed cone disc and a second shaft moving cone disc arranged oppositely in a conical surface, the shaft or the second shaft is connected with an output shaft of a power source, the power source comprises an internal combustion engine and a motor, and is used for providing driving force to a vehicle device, and the utility model is characterized in that it further comprises a thrust unit and a torsion unit.

[0011] The thrust unit comprises a thrust rolling body, a secondary thrust disc and a primary thrust disc arranged on one side of the non-conical surface end of the shaft moving cone disc, the primary thrust disc is connected with the shaft in a circumferentially fixed and axially movable manner, the secondary thrust disc is arranged on one side of the primary thrust disc close to the shaft moving cone disc and is fixedly connected with the non-conical surface end of the shaft moving cone disc or integrally formed with the shaft moving cone disc, opposite end faces of the primary thrust disc and the secondary thrust disc are respectively provided with a primary thrust inclined groove and a secondary thrust inclined groove which are symmetrically centered on the thrust rolling body, so that the primary thrust disc can generate axial thrust on the shaft moving cone disc when transmitting torque with the shaft moving cone disc, and the required clamping force for transmitting torque by the ring transmission element is formed, and the axial stroke generated by mutual rotation between the primary thrust disc and the secondary thrust disc matches the required axial stroke for speed regulation of the shaft moving cone disc.

[0012] The torsion unit comprises a primary torsion disc which is sleeved on the shaft in an axially sliding and circumferentially fixed manner, and the primary torsion disc is used for providing positive rotation torque to the power source.

[0013] Further, the torsion unit further comprises a secondary torsion disc, a torsion rolling body and a second elastic assembly of the shaft.

[0014] The secondary torsion disc is fixedly connected with the non-conical surface end of the shaft moving cone disc or integrally formed with the shaft moving cone disc and located at the non-conical surface end of the shaft moving cone disc, and the primary torsion disc is arranged on one side of the secondary torsion disc away from the shaft moving cone disc.

[0015] Opposite end faces of the primary torsion disc and the secondary torsion disc are respectively provided with a primary torsion inclined groove and a secondary torsion inclined groove which are symmetrically and uniformly distributed with the torsion rolling body as the center, the primary torsion inclined groove and the secondary torsion inclined groove are one-way inclined grooves which are raised from one end to the other end, and at least two groups of the secondary torsion inclined grooves and the primary torsion inclined grooves are uniformly distributed in the circumferential direction.

[0016] One end of the one-axis second elastic assembly abuts against the end face of the main torque disc away from the auxiliary torque disc and provides axial pressure to the main torque disc towards the auxiliary torque slope groove.

[0017] Further, the thrust unit further comprises a one-axis first elastic assembly, which is sleeved on the one-axis and arranged on the side of the main thrust disc away from the one-axis movable cone disc to provide axial thrust to the main thrust disc towards the one-axis movable cone disc, and the end face of the side of the main thrust disc away from the one-axis movable cone disc abuts against the fifth support seat fixedly connected with the one-axis;

[0018] At least two groups of auxiliary thrust slope grooves and main thrust slope grooves are arranged along the circumferential direction of the main thrust disc, and the auxiliary thrust slope grooves and the main thrust slope grooves are both V-shaped slope groove structures symmetrically rising from the low point to both ends or one-way slope grooves rising from one end to the other end.

[0019] Further, when the one-axis is connected with the power source and serves as the driving shaft, in the installed state, the thrust rolling body is arranged at the position of the lowest point in the main thrust slope groove, the torque rolling body is arranged at the intermediate position of the main torque slope groove, and the ring-shaped transmission member is located at the minimum working radius in the one-axis cone disc unit.

[0020] Further, when the two-axis is connected with the power source and serves as the driving shaft, in the installed state, the thrust rolling body is arranged at the position close to the highest point in the main thrust slope groove, the torque rolling body is arranged at the intermediate position of the main torque slope groove, and the ring-shaped transmission member is located at the maximum working radius in the one-axis cone disc unit.

[0021] Further, the centrifugal speed regulation unit is further included, the two-axis fixed cone disc is connected with the two-axis fixed sleeve, and the two-axis movable cone disc is connected with the two-axis sleeve in the circumferential direction and movable in the axial direction;

[0022] The centrifugal speed regulation unit comprises a movable centrifugal disc, a fixed centrifugal disc, a centrifugal block and a two-axis first elastic assembly, the movable centrifugal disc is connected with the two-axis movable cone disc, and the two-axis first elastic assembly is connected with the movable centrifugal disc.

[0023] The end faces of the fixed centrifugal disc and the movable centrifugal disc axially opposite to each other are respectively provided with a fixed centrifugal slope groove and a movable centrifugal slope groove, the centrifugal block is clamped between the movable centrifugal slope groove and the fixed centrifugal slope groove, and the centrifugal block compresses the two-axis first elastic assembly under the action of the rotational centrifugal force and causes the movable centrifugal disc to move axially, thereby providing space for the two-axis movable cone disc to move axially synchronously and in the same direction.

[0024] Further, the dynamic centrifugal inclined chute and the fixed centrifugal inclined chute are radial low-to-high slope surface rolling tracks, and at least two groups of the dynamic centrifugal inclined chute and the fixed centrifugal inclined chute are arranged along the circumferential direction and uniformly distribute the centrifugal bodies.

[0025] Further, when the two-shaft connection power source is used as a driving shaft, the fixed centrifugal disc is fixedly sleeved on the two-shaft and arranged on one side of the non-tapered end of the two-shaft driving cone disc, the dynamic centrifugal disc is axially movably and circumferentially fixedly sleeved on the two-shaft and arranged on the side of the fixed centrifugal disc away from the two-shaft driving cone disc.

[0026] The fixed centrifugal disc is provided with a through hole, so that the non-tapered end of the two-shaft driving cone disc and the end surface of the dynamic centrifugal disc are connected through a speed regulating push rod penetrating through the through hole of the fixed centrifugal disc.

[0027] In the installed state, the annular transmission member is at the maximum working radius of the two-shaft cone disc unit, and in the process of transmitting torque, the axial thrust generated by the thrust unit acting on the two-shaft driving cone disc through the annular transmission member is smaller than the elastic force of the first elastic component of the two-shaft.

[0028] Further, when the two-shaft connection power source is used as a driving shaft, the centrifugal speed regulating unit further comprises a second elastic component of the two-shaft.

[0029] One end of the second elastic component of the two-shaft is fixedly connected with the two-shaft sleeve, and the other end is pressed against the non-tapered end of the two-shaft driving cone disc and provides a thrust to the two-shaft driving cone disc towards the two-shaft fixed cone disc.

[0030] The dynamic centrifugal disc is axially movably and circumferentially fixedly sleeved with the two-shaft and arranged on one side of the non-tapered end of the two-shaft fixed cone disc, and the fixed centrifugal disc is fixedly connected with the non-tapered end of the two-shaft fixed cone disc or integrally manufactured, and arranged on the side of the dynamic centrifugal disc close to the two-shaft fixed cone disc.

[0031] The two-shaft fixed cone disc and the fixed centrifugal disc are provided with through holes, and the dynamic centrifugal disc and the two-shaft driving cone disc are in abutment through a speed regulating push rod penetrating through the through holes.

[0032] In the installed state, the first elastic component of the two-shaft compresses the second elastic component of the two-shaft through the speed regulating push rod, and the annular transmission member is at the minimum working radius of the two-shaft cone disc unit.

[0033] Further, the second elastic component of the two-shaft is provided with at least two groups of elastic members with different elastic coefficients, and each elastic coefficient in the second elastic component of the two-shaft is smaller than the elastic coefficient of the first elastic component of the two-shaft.

[0034] The beneficial effects of the utility model lie in:

[0035] 1. During the process of switching the torque transmitted by the power source between forward and reverse directions (such as when an electric vehicle switches from a driving condition to a braking energy recovery condition), the torsional rolling element of the torsional unit climbs and compresses the second elastic component of the first axis to provide the clamping force required to transmit the torque during the switching process. At the same time, the first elastic component of the first axis pushes the main thrust plate to move axially and compresses the thrust rolling element, ensuring that the thrust rolling element can roll in the opposite direction to the symmetrical position of the V-shaped thrust ramp groove during this process, thereby providing the thrust to meet the clamping force required to transmit the reverse torque (braking energy recovery). This function is suitable for electric vehicles that transmit large torque in the reverse direction during braking energy recovery.

[0036] 2. When the power source is in the reverse drag working condition (for example, the vehicle is coasting and the power source is rotating and the power source does not output reverse torque), the torque unit provides clamping force to the annular transmission member and keeps the main thrust plate and the first-axis dynamic cone plate from rotating relative to each other; that is, the torque unit can provide the clamping force required to transmit the reverse drag torque of the power source;

[0037] 3. Due to inelastic elongation, normal wear between the annular transmission member and the cone disk unit, and assembly, mechanical clearance exists between the annular transmission member and the cone disk unit. The existing technical solution eliminates the mechanical clearance by providing axial thrust through the pre-tightening elastic member. However, there will be oscillation impact in the process of transmitting power and compressing the pre-tightening elastic member, resulting in service life and smoothness not meeting the use requirements. The second elastic component of one shaft in the torsion unit of the utility model pushes the main torsion disk to squeeze the torsion rolling body to roll in the main torsion ramp groove and the auxiliary torsion ramp groove, which can provide a torque consistent with the direction of the power torque to one shaft (the torque is greater than the reverse drag torque at the peak speed of the power source), and overcome the rotational resistance torque of the power source to drive the power source to rotate until the mechanical clearance is eliminated. That is, in the installed state or before power is transmitted, the torsion unit has eliminated the mechanical clearance, avoiding oscillation impact in the power transmission process, and significantly improving the service life and practicability.

[0038] 4. By setting up a torque unit and placing the thrust unit on the side of the movable cone disc, the centrifugal force of the centrifugal speed control unit compresses the elastic member to provide the movable cone disc with displacement. The movable cone disc on the thrust unit side does not need to be equipped with a speed control structure to achieve adaptive speed control, which effectively simplifies the structure, reduces costs, and improves reliability. There is no need to set up a thrust bearing that can withstand large thrust and high speed, which improves the mechanical transmission efficiency and significantly broadens the scope of application of the technical solution.

[0039] 5. The magnitude of the torque generated by the torsion unit is related to the angles of the primary and secondary torsion ramps, as well as the elastic coefficient of the first elastic component. In practical applications, adaptive design based on the rotational resistance torque of the power source allows for automatic operation without the need for a complex active control system, effectively improving system reliability. When adapting to an internal combustion engine power source, the clamping force required to transmit the anti-drag torque can be provided by the torsion unit, meaning the primary and secondary thrust ramps can be set to unidirectional.

[0040] 6. The centrifugal force of the centrifugal speed regulating unit does not directly drive the moving cone disc to adjust the speed, thus avoiding the excessive clamping force caused by the centrifugal force at high speed, improving the mechanical transmission efficiency and service life, and reducing the structural strength design requirements;

[0041] 7. Since the motor can output constant power from the rated speed to 2 times the rated speed, and the peak power of the internal combustion engine usually occurs at the highest speed and increases monotonically, the thrust unit is set on the side of the dynamic cone, and the centrifugal speed control unit, thrust unit, and torque unit can be flexibly adapted according to the speed and power characteristics of the power source, thereby improving the scope of application of the utility model;

[0042] 8. The thrust unit is set on the side of the moving cone. The angles of the main thrust ramp groove and the auxiliary thrust ramp groove can be adapted according to the corresponding transmission speed ratio. This avoids excessive clamping force caused by setting the thrust unit on the side of the fixed cone, resulting in low mechanical transmission efficiency and reduced service life.

[0043] It is worth emphasizing that the above beneficial effects are mainly due to the fact that the torsion unit of the utility model solves the problems of the slope pressure structure in which the dynamic cone disc pressure cannot transmit power in the reverse direction and there is oscillation impact when transmitting power, which is a prerequisite for feasibility.

[0044] Other advantages, objectives, and features of the present invention will be described in detail in the following description and, to some extent, will be apparent to those skilled in the art upon examination and study of the following or may be learned from practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings, in which:

[0046] Figure 1 This is a schematic structural diagram of a cone-disc type continuously variable transmission device with a dynamic cone disc pressurized in Example 1;

[0047] Figure 2 Schematic diagram of the structure of the torsion unit in Example 3;

[0048] Figure 3 for Figure 2 Schematic diagram of the arrangement of the mid-circumferential elastic components;

[0049] Figure 4 This is a structural diagram of the auxiliary thrust ramp groove and the main thrust ramp groove being set as a one-way ramp groove;

[0050] Figure 5Structure diagram of a cone-pulley continuously variable transmission device with a moving cone pulley and pressure in Example 2;

[0051] Figure 6 For Figure 1 Right view of a shaft moving cone pulley, a secondary thrust pulley and a secondary torsion pulley in

[0052] Figure 7 For Figure 1 Right view of a moving centrifugal pulley in

[0053] Figure 8 Structure diagram of a prior art solution and its mechanical clearance generation;

[0054] Figure 9 Position diagram of a prior art solution thrust rolling when eliminating mechanical clearance through axial thrust;

[0055] Figure 10 Position diagram of a prior art solution thrust rolling body when transmitting power impact;

[0056] Figure 11 Position diagram of a thrust rolling body, a torsion rolling body and a centrifugal block when eliminating mechanical clearance through a driving power source rotation in the installed state in Example 1;

[0057] Figure 12 Position diagram of a thrust rolling body, a torsion rolling body and a centrifugal block in corresponding slope grooves when the minimum transmission ratio in Example 1;

[0058] Figure 13 Position diagram of a thrust rolling body, a torsion rolling body and a centrifugal block in corresponding slope grooves when the vehicle braking energy recovery reverse power transmission in Example 1;

[0059] Figure 14 Test data analysis diagram of a prior art solution oscillation impact.

[0060] : one shaft 1, first support seat 2, thrust bearing 3, one shaft fixed cone disc 4, ring transmission member 5, one shaft movable cone disc 6, auxiliary thrust disc 7, auxiliary thrust slope groove 7-1, auxiliary torsion disc 8, auxiliary torsion slope groove 8-1, torsion rolling body 9, thrust rolling body 10, main thrust disc 11, main thrust slope groove 11-1, main torsion disc 12, main torsion slope groove 12-1, one shaft first elastic assembly 13, one shaft second elastic assembly 14, second support seat 15, two shaft 16, third support seat 17, two shaft first elastic assembly 18, movable centrifugal disc 19, movable centrifugal slope groove 19-1, radial limiting part 20, centrifugal block 21, fixed centrifugal disc 22, fixed centrifugal slope groove 22-1, speed regulating push rod 23, two shaft movable cone disc 24, two shaft fixed cone disc 25, circumferential elastic assembly 26, power positive rotation direction 27, fourth support seat 28, two shaft second elastic assembly 29, mechanical clearance 30, fifth support seat 31, pre-tightening elastic assembly 32, pre-tightening elastic assembly support seat 2a, driving slope surface disc 11a, driving slope surface rolling track 11a-1, thrust steel ball 10a, driven slope surface disc 7a, driven slope surface rolling track 7a-1. DETAILED DESCRIPTION

[0061] The other advantages and effects of the present application can be easily understood by those skilled in the art from the content disclosed in the specification. The present application can also be implemented or applied in other different specific embodiments, and the details in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the drawings provided in the following embodiments only schematically illustrate the basic concept of the present application, and the features in the following embodiments and embodiments can be combined with each other without conflict.

[0062] The drawings are only used for exemplary illustration, and the representation is only a schematic diagram, not a physical diagram, and should not be understood as a limitation of the present application. In order to better illustrate the embodiments of the present application, some components in the drawings can be omitted, enlarged or reduced, and do not represent the size of the actual product. It is understandable for those skilled in the art that some known structures and their descriptions in the drawings can be omitted.

[0063] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0064] Example 1

[0065] like Figure 1 As shown, a cone-disc type continuously variable transmission device with a dynamic cone disc pressurized is shown, in which a first shaft 1 is connected to the output shaft of the power source to serve as the driving shaft, and a second shaft 16 serves as the driven shaft; it includes a first-shaft cone-disc unit, a second-shaft cone-disc unit, a thrust unit, a torque unit, and an annular transmission member 5 for transmitting power between the first-shaft cone-disc unit and the second-shaft cone-disc unit.

[0066] The single-shaft cone-disc unit includes a single shaft 1, a single-shaft fixed cone disk 4, and a single-shaft movable cone disk 6. The single-shaft fixed cone disk 4 includes a sleeve integrally manufactured with the cone disk and is sleeved on the single shaft 1 in a manner that allows axial movement and circumferential rotation. The outer ring of the sleeve of the single-shaft fixed cone disk 4 is provided with a sliding spline, and the inner ring of the single-shaft movable cone disk 6 is provided with a sliding spline and sleeved on the sleeve of the single-shaft fixed cone disk 4, so that the single-shaft movable cone disk 6 and the single-shaft fixed cone disk 4 can move axially relative to each other but cannot rotate circumferentially relative to each other.

[0067] One end of the annular transmission member 5 is clamped between the conical surfaces of the fixed cone disc 4 of the first shaft and the movable cone disc 6 of the first shaft, and the non-conical end of the fixed cone disc 4 of the first shaft is connected to the outer ring of the thrust bearing 3. The inner ring of the thrust bearing 3 is sleeved on the first shaft and abuts against the first support seat 2 fixedly connected to the first shaft 1, so that the cone disc unit of the first shaft and the first shaft 1 can achieve rolling rotation with each other, reducing rotational friction and limiting axial movement of one end of the fixed cone disc 4 of the first shaft;

[0068] It is worth emphasizing that the rotation angles of the inner and outer rings of the thrust bearing 3 are the same and synchronized with the rotation angles of the main thrust plate and the auxiliary thrust plate. That is, the maximum rotation angle of the thrust bearing 3 will not exceed one circle, and low mechanical efficiency and poor adaptability will not be caused by high-speed rotation.

[0069] It should be noted that the connection between the first support seat 2 and the shaft 1 can be an integral manufacturing method, fixed with a locking nut or other connection methods that cannot rotate or move axially.

[0070] like Figure 1 andFigure 11 As shown, the thrust unit includes a secondary thrust disc 7 provided with a secondary thrust ramp groove 7-1, a primary thrust disc 11 provided with a primary thrust ramp groove 11-1, a thrust rolling body 10, and a first shaft elastic assembly 13; the secondary thrust disc 7 is fixedly connected to the non-tapered side of the shaft movable cone disc 6;

[0071] In another embodiment, the secondary thrust disc 7 can also be integrally formed with the shaft movable cone disc 6; the primary thrust disc 11 is axially movable and circumferentially fixedly connected to the shaft 1;

[0072] One end of the first shaft elastic assembly 13 abuts against the end surface of the primary thrust disc 11 and provides a pressure to the primary thrust disc 11 towards the shaft movable cone disc 6, and the other end abuts against the end surface of the primary torsion disc 12; the end surface of the primary thrust disc 11 abuts against the fifth support seat 31 fixedly connected to the shaft 1.

[0073] As shown, Figure 11 The secondary thrust ramp groove 7-1 and the primary thrust ramp groove 11-1 are both V-shaped slope groove structures symmetrically raised from the middle to both ends; the secondary thrust ramp groove 7-1 and the primary thrust ramp groove 11-1 are symmetrically arranged with the thrust rolling body 10 clamped therebetween as the center, so that when the primary thrust disc 11 and the secondary thrust disc 7 transmit torque, axial thrust is generated to the shaft movable cone disc 6, and relative rotation of the primary thrust disc 11 and the secondary thrust disc 7 can provide a speed regulating stroke for the axial movement of the shaft movable cone disc 6; in the installed state, the thrust rolling body 10 is arranged at the lowest point of the secondary thrust ramp groove 7-1, and the annular transmission member 5 is at the minimum working radius of the shaft cone unit; in this embodiment, there are three groups of secondary thrust ramp grooves 7-1 and primary thrust ramp grooves 11-1, which are uniformly arranged along the circumference of the shaft movable cone disc 6.

[0074] In another embodiment, as shown, Figure 4 When the power source does not output reverse torque, the secondary thrust ramp groove 7-1 and the primary thrust ramp groove 11-1 can be arranged as one-way ramp grooves raised from one end to the other end;

[0075] As shown, Figure 1 and Figure 11 The torsion unit includes a primary torsion disc 12 provided with a primary torsion ramp groove 12-1, a secondary torsion disc 8 provided with a secondary torsion ramp groove 8-1, a torsion rolling body 9, and a second shaft elastic assembly 14;

[0076] The primary torsion disc 12 is connected to the shaft 1 through axial sliding spline; the secondary torsion disc 8 is fixedly connected to the non-tapered side of the shaft movable cone disc 6; in another embodiment, the secondary torsion disc 8 can also be integrally formed with the shaft movable cone disc 6;

[0077] In the installed state, the torsion roller 9 is clamped in the middle of the main torsion slope groove 12-1 and the auxiliary torsion slope groove 8-1; one end of the shaft second elastic assembly 14 is abutted against the end face of the main torsion disc 12 which is not the main torsion slope groove 12-1, and the other end is abutted against the second support seat 15 fixedly connected with the shaft 1; it is to be noted that the connection mode of the second support seat 15 with the shaft 1 can be integrally manufactured, fixed by lock nuts or other connection modes which cannot rotate and cannot move axially.

[0078] As shown in Figure 11 , the auxiliary torsion slope groove 8-1 and the main torsion slope groove 12-1 are one-way slope grooves with one end rising to the other end, and the auxiliary torsion slope groove 8-1 and the main torsion slope groove 12-1 are symmetrically arranged with the clamped torsion roller 9 as the center; the shaft second elastic assembly 14 realizes the forward rotation of the driving power source until the mechanical clearance 30 is eliminated by pushing the main torsion disc 12 to extrude the torsion roller 9 to roll; and the torsion unit forms a pre-tightening force between the shaft cone disc unit and the two-shaft cone disc unit.

[0079] In the embodiment, three groups of auxiliary torsion slope grooves 8-1 and main torsion slope grooves 12-1 are provided and uniformly arranged along the circumference of the shaft movable cone disc 6; it is to be noted that the positions of the thrust unit and the torsion unit on the shaft 1 are not unique, and in other embodiments besides the present embodiment, the thrust unit can be arranged to the outside, and the torsion unit can be arranged to the inside, which also belongs to the scope protected by the present application;

[0080] As shown in Figure 1 , the cone disc type continuously variable transmission device further comprises a two-shaft cone disc unit and a centrifugal speed regulation unit;

[0081] The two-shaft cone disc unit comprises a two-shaft 16, a two-shaft fixed cone disc 25 fixedly connected with the two-shaft 16, a two-shaft movable cone disc 24 coaxially sleeved on the two-shaft 16 through axial sliding splines, so that the two-shaft movable cone disc 24 and the two-shaft 16 can move axially relative to each other but are fixed in the circumferential direction;

[0082] The centrifugal speed regulation unit comprises a fixed centrifugal disc 22 provided with a fixed centrifugal slope groove 22-1, a movable centrifugal disc 19 provided with a movable centrifugal slope groove 19-1, a centrifugal block 21 and a two-shaft first elastic assembly 18;

[0083] The fixed centrifugal disc 22 is fixedly connected to the two-shaft 16, and the non-ramp groove end of the fixed centrifugal disc 22 is coaxially and oppositely arranged at a distance from the non-conical surface end of the two-shaft movable cone disc 24, and the distance is greater than the axial movement distance of the two-shaft movable cone disc 24; the movable centrifugal disc 19 is connected to the two-shaft 16 through axial sliding splines and can axially move but cannot rotate relative to each other; the movable centrifugal ramp groove 19-1 and the fixed centrifugal ramp groove 22-1 are both one-way rising ramp grooves arranged radially along the two-shaft 16, and the movable centrifugal ramp groove 19-1 and the fixed centrifugal ramp groove 22-1 are coaxially and oppositely arranged and clamping the centrifugal block 21; the embodiment is provided with six groups of movable centrifugal ramp grooves 19-1 and fixed centrifugal ramp grooves 22-1 clamping the centrifugal block 21.

[0084] The two-shaft first elastic assembly 18 is sleeved on the two-shaft 16, one end abuts against the third support seat 17 fixedly connected to the two-shaft 16, and the other end abuts against the non-ramp groove end of the movable centrifugal disc 19 and provides a pressure, and in the embodiment, the two-shaft first elastic assembly 18 is provided with three groups of elastic members with different elastic coefficients; it should be noted that the connection mode of the third support seat 17 and the two-shaft 16 can be integral manufacturing, locking nut fixing or other connection modes that cannot rotate and cannot axially move;

[0085] The fixed centrifugal disc 22 is provided with three through holes for sleeving the speed regulating push rod 23 at the inner circle position, three speed regulating push rods 23 pass through the through holes on the fixed centrifugal disc 22, one end abuts against the ramp groove end of the movable centrifugal disc 19, and the other end abuts against the non-conical surface end of the two-shaft movable cone disc 24, and the outer side of the movable centrifugal disc 19 and the two-shaft movable cone disc 24 in contact with the speed regulating push rod 23 is provided with a radial limiting portion 20, and the radial limiting portion 20 prevents the speed regulating push rod 23 from moving radially under the action of centrifugal force and interfering with the through hole on the fixed centrifugal disc 22;

[0086] In the installed state, the length of the speed regulating push rod 23 is set to satisfy that the elastic force of the two-shaft first elastic assembly 18 does not act on the two-shaft movable cone disc 24, and the axial position of the two-shaft movable cone disc 24 is limited to ensure that the annular transmission member 5 is at the maximum working radius of the two-shaft cone disc unit; during torque transmission, the axial thrust generated by the thrust unit acts on the two-shaft movable cone disc 24 through the annular transmission member 5, and the thrust is less than the elastic force of the two-shaft first elastic assembly 18; when the two-shaft 16 rotates at high speed, the centrifugal force generated by the centrifugal block 21 compresses the two-shaft first elastic assembly 18 and pushes the movable centrifugal disc 19 to axially displace, and at the same time, the thrust generated by the thrust unit and the torsion unit acts on the two-shaft movable cone disc 24 through the annular transmission member 5 and pushes the two-shaft movable cone disc 24 to synchronously and axially move with the movable centrifugal disc 19;

[0087] The two-shaft first elastic assembly 18 is a three-piece stacked butterfly spring, the two-shaft second elastic assembly 14 is a five-piece stacked butterfly spring, and the two-shaft first elastic assembly 18 is a seven-piece stacked butterfly spring;

[0088] In another embodiment, the speed regulating push rod 23 can also pass through the outer ring of the fixed centrifugal disc 22 (the outer side of the centrifugal block 21) to achieve the same function.

[0089] The method of using the structure is as follows:

[0090] This embodiment takes the application of a pure electric vehicle as an example, with the first shaft 1 as the power input shaft and the second shaft 16 as the output shaft, and analyzes the typical working conditions:

[0091] When the vehicle speed is zero and no power is transmitted, the mechanical gap 30 between the main thrust disc 11 and the auxiliary thrust disc 7 has been eliminated by the positive rotation of the torsion unit driven power source, and the thrust rolling body 10 is located at the M 0+ / N 0+ , the torsion rolling body 9 is located at the X 0+ / Y 0+ , and the centrifugal force rolling body 21 is located at the lowest point H0 / J0 of the dynamic centrifugal slope groove 19-1 and the fixed centrifugal slope groove 22-1, at which time the transmission speed ratio is maximum (as shown in Figure 11

[0092] When the vehicle transmits torque and reaches the highest vehicle speed from zero speed, the centrifugal force rolling body 21 compresses the first elastic component 18 of the second shaft under the action of centrifugal force and pushes the dynamic centrifugal disc 19 to move axially, while the thrust generated by the first shaft dynamic cone disc 6 under the action of the torsion unit and the thrust unit is applied to the second shaft dynamic cone disc 24 through the annular transmission member 5 to realize synchronous axial movement and speed regulation; At this time, the thrust rolling body 10 is located at the M1 / N2 position of the auxiliary thrust slope groove 7-1 and the main thrust slope groove 11-1, the torsion rolling body 9 is located at the X1 / Y2 position of the auxiliary torsion slope groove 8-1 and the main torsion slope groove 12-1, the first elastic component 14 of the first shaft is elongated, and the centrifugal force rolling body 21 is located at the highest point H1 / J1 of the dynamic centrifugal slope groove 19-1 and the fixed centrifugal slope groove 22-1, at which time the transmission speed ratio is minimum (as shown in Figure 12

[0093] ​​When the vehicle switches to the braking energy recovery working condition, the process of the torsion rolling body 9 climbing from the position X1 / Y2 to X2 / Y1 will compress the second elastic assembly 14 of the first shaft and provide the clamping force required for transmitting the reverse torque, while the first elastic assembly 13 of the first shaft pushes the main thrust disc 10 to move axially and compresses the thrust rolling body 10, so as to avoid the thrust rolling body 10 from being separated from the thrust slope groove in this working condition, and at the same time, the rolling movement of the thrust rolling body 10 is met (the thrust provided by the first elastic assembly 13 of the first shaft only needs to meet the axial movement of the main thrust disc 10 in this working condition); until the thrust rolling body 10 falls back from M1 / N2 to M0 / N0 and climbs to M2 / N1, the thrust unit starts to provide the clamping force required for transmitting the reverse torque; because the mass of the power source is relatively small, the energy consumed in the process of compressing the second elastic assembly 14 of the first shaft can avoid the slip and impact of the ring-shaped transmission member 5 caused by the direct rapid fall of the thrust rolling body 10 from M1 / N2 to M2 / N1, at this time, it is a transient working condition, the vehicle speed cannot be reduced, the centrifugal block is still at the position H1 / J1, and the transmission speed ratio is still at the minimum (for example, as shown in Figure 13 The process of this working condition explains the principle of the reverse traction transmission power.

[0094] When the vehicle is reduced from the highest vehicle speed (for example, as shown in Figure 13 ) to 0 kph, the centrifugal force of the centrifugal rolling body 21 decreases with the decrease of the vehicle speed, and falls back from the highest position H1 / J1 to the lowest position H0 / J0 under the thrust of the first elastic assembly 18 of the second shaft, at the same time, the thrust of the first elastic assembly 18 of the second shaft acts on the second shaft cone disc 24 through the speed regulating push rod 23, and is transmitted to the first shaft cone disc unit through the ring-shaped transmission member 5, the thrust rolling body 10 is pressed from M2 / N1 to M 0+ / N 0+ under the thrust of the thrust disc 7, at the same time, the main thrust disc 10 is pushed to move axially and compresses the first elastic assembly 13 of the first shaft, until the main thrust disc 10 abuts against the fifth support seat 31, at the same time, the torsion rolling body 9 falls back from X2 / Y1 to the intermediate position X 0+ / Y 0+ , at this time, the transmission speed ratio is at the maximum (for example, as shown in Figure 11 ).

[0095] Now taking the application of the road vehicle as an example, the principle of solving the impact of the torsion unit and the existing technical solutions is analyzed:

[0096] For example, as shown in Figure 8As shown, the structure of the prior art scheme, provided with the driving slope disc 11a with the driving slope track 11a-1, the driving slope disc 11a is axially sliding and circumferentially fixedly connected with the shaft 1, the non-slope groove end surface of the driving slope disc 11a is abuttingly connected with the pre-tightening elastic assembly 32 sleeved on the shaft 1, the other end of the pre-tightening elastic assembly 32 is fixedly sleeved on the shaft 1, and the pre-tightening elastic assembly 32 provides a pre-tightening force for the annular transmission member 5; the driven slope disc 7a fixedly connected with the shaft fixed cone disc 4 is provided with the driven slope track 7a-1 corresponding to the driving slope disc 11a, and the thrust steel ball 10a is clamped in the driven slope track 7a-1 and the driving slope track 11a-1; when the mechanical clearance 30 exists, the thrust steel ball 10a will climb along the slope track when transmitting power, that is, the thrust steel ball 10a does not provide a speed regulating stroke when climbing, and the driving speed regulating system is arranged to control the synchronous and same direction movement of the one-axis driving cone disc and the two-axis driving cone disc to realize speed regulation.

[0097] The principle of impact generated by the prior art scheme is as follows: Figure 8 As shown, when the driving slope track 11a-1 and the driven slope track 7a-1 exist the mechanical clearance 30 with the thrust steel ball 10a; the prior art scheme eliminates the mechanical clearance 30 by pushing the driving slope disc 11a to move axially by the pre-tightening elastic assembly 32 (as shown in Figure 9 When transmitting power, the driving slope disc 11a compresses the pre-tightening elastic assembly 32, and at the same time, the rolling body 10a quickly climbs from M0 / N0 to M 0+ / N 0+ , and at this moment, the pre-tightening elastic assembly 32 cannot be compressed (as shown in Figure 10 ), which will generate an impact on the whole vehicle; because the inertia of the whole vehicle is large, the speed of the driving slope disc 11a connected with the power source is relatively reduced at the moment of impact, so that the thrust steel ball 10a falls back along the driven slope track 7a-1, and at the same time, the pre-tightening elastic assembly 32 is elongated again to eliminate the mechanical clearance 30 (as shown in Figure 9 When continuously outputting power and compressing the pre-tightening elastic assembly 32, the above impact process will continuously occur in an oscillation mode (test analysis data is as shown in Figure 14 ).

[0098] The principle of eliminating impact of the torsion unit is as follows: Figure 11 As shown, the elastic pressure of the second elastic assembly 14 of the one-axis to the main torsion disc 12 will push the torsion rolling body 9 to roll from the X0 / Y0 position to the X1 / Y2 direction to the X 0+ / Y 0+ position, and at the same time, the driving power source is positively rotated until the thrust rolling body 10 climbs from the M0 / N0 position to the M 0+ / N 0+ position to eliminate the mechanical clearance 30.

[0099] The core concept of the torque unit of the present invention for eliminating the mechanical gap 30 is to drive the power source to rotate in the forward direction to eliminate the mechanical gap 30; that is, the mechanical gap 30 is eliminated before power is transmitted or in the installed state.

[0100] Example 2

[0101] like Figure 5 As shown, a continuously variable transmission device with dynamic cone disc pressurization is disclosed, comprising a first-shaft cone disc unit, a second-shaft cone disc unit, a thrust unit, a torque unit, and an annular transmission member 5 for transmitting power between the first-shaft cone disc unit and the second-shaft cone disc unit. In this embodiment, the first shaft 1 serves as a driven shaft, the second shaft 16 serves as a driving shaft for power input, and the auxiliary thrust disc 7 and the auxiliary torque disc 8 are integrally formed with the first-shaft dynamic cone disc 6.

[0102] The two-shaft cone-disc unit includes two shafts 16 and two fixed cone disks 25 and two movable cone disks 24 arranged opposite to each other with coaxial cone surfaces; the two fixed cone disks 25 are sleeved and fixedly connected to the two shafts 16, and the two movable cone disks 24 are sleeved and fixedly connected to the two shafts 16 so as to be axially movable relative to each other and circumferentially fixed;

[0103] Furthermore, the centrifugal speed regulating unit includes a dynamic centrifugal disc 19, a centrifugal block 21, a second elastic component 29 of the second shaft and a first elastic component 18 of the second shaft, which are arranged on the side of the second shaft fixed cone disc 25; the dynamic centrifugal disc 19 is sleeved on the second shaft 16 in a manner that it can move axially with respect to each other but is fixed circumferentially; the opposite end surfaces of the dynamic centrifugal disc 19 and the second shaft fixed cone disc 25 on the non-conical side are respectively provided with a dynamic centrifugal slope groove 19-1 and a fixed centrifugal slope groove 22-1, and the dynamic centrifugal slope groove 19-1 and the fixed centrifugal slope groove 22-1 are radially inclined from low to high; in the installed state, the centrifugal The core block 21 is clamped at the lowest point of the raceway between the dynamic centrifugal ramp groove 19-1 and the fixed centrifugal ramp groove 22-1; the first elastic component 18 of the second shaft is sleeved on the second shaft 16, and one end is pressed against the dynamic centrifugal disc 19, and the other end is pressed against the third support seat 17 fixedly connected to the second shaft 16; the second elastic component 29 of the second shaft is sleeved on the second shaft 16 and is provided with two groups of elastic members with different elastic coefficients. One end of the second elastic component 29 of the second shaft is pressed against the non-conical end of the dynamic cone disc 24 of the second shaft, and the other end is axially fixed by the fourth support seat 28 sleeved and fixedly connected to the second shaft 16;

[0104] Furthermore, the two-shaft fixed cone disc 25 is provided with three through holes near the sleeve portion, and the speed regulating push rod 23 passes through the through holes to connect the dynamic centrifugal disc 19 and the two-shaft dynamic cone disc 24, and the abutment portions are each provided with a groove-shaped radial limit portion 20 to limit the radial position of the speed regulating push rod 23;

[0105] Further, the centrifugal speed regulating unit is provided with six sets of dynamic centrifugal slope grooves 19-1 and fixed centrifugal slope grooves 22-1 clamping the centrifugal block 21; the maximum elastic coefficient of the two-axis first elastic component 18 is greater than that of the two-axis second elastic component 29, and in the installed state, the two-axis first elastic component 18 limits the axial position of the two-axis dynamic cone disc 24 through the speed regulating push rod 23, so that the annular transmission member 5 is located at the minimum working radius of the two-axis cone disc unit;

[0106] The other end of the annular transmission member 5 is clamped between the cone surfaces of the one-axis cone disc unit, which includes the one-axis 1, the one-axis fixed cone disc 4, and the one-axis dynamic cone disc 6. The one-axis fixed cone disc 4 contains a shaft sleeve integrally manufactured with the cone disc and is axially movable and circumferentially rotatable and sleeved on the one-axis 1. The outer ring of the shaft sleeve of the one-axis fixed cone disc 4 is provided with sliding splines, and the inner ring of the one-axis dynamic cone disc 6 is provided with sliding splines and is sleeved on the shaft sleeve of the one-axis fixed cone disc 4, so that the one-axis dynamic cone disc 6 and the one-axis fixed cone disc 4 can be axially movable and circumferentially rotatable. The non-cone surface end of the one-axis fixed cone disc 4 is connected with the outer ring of the thrust bearing 3, and the inner ring of the thrust bearing 3 is sleeved on the one-axis 1 and abuts against the first support seat 2 fixedly connected with the one-axis 1, so that the one-axis cone disc unit and the one-axis 1 can be mutually rolling and rotating, reducing the rotating friction and limiting the axial movement of the one-axis fixed cone disc 4. It is worth emphasizing that the rotating angles of the inner and outer rings of the thrust bearing 3 are the same as and synchronous with the rotating angles of the main thrust disc 11 and the one-axis dynamic cone disc 6, that is, the maximum rotating angle of the thrust bearing 3 does not exceed one circle, and the high-speed rotation does not cause low mechanical efficiency and poor adaptability.

[0107] Further, the thrust unit comprises a main thrust disc 11, a thrust rolling body 10 and a shaft first elastic assembly 13; the main thrust disc 11 is connected with the shaft 1 through axial movement and circumferential fixed connection, the end surface of the main thrust disc 11 abuts against the fifth support seat 31 fixedly connected with the shaft 1, and the outer ring of the main thrust disc 11 is provided with sliding splines; the opposite end surfaces of the main thrust disc 11 and the non-tapered end of the shaft movable cone disc 6 are respectively provided with a main thrust slope groove 11-1 and a secondary thrust slope groove 7-1, the secondary thrust slope groove 7-1 and the main thrust slope groove 11-1 are both circumferential V-shaped slope grooves symmetrically rising from the low point to both ends, and the secondary thrust slope groove 7-1 and the main thrust slope groove 11-1 are symmetrically arranged with the thrust rolling body 10 as the center; the shaft first elastic assembly 13 is sleeved on the shaft 1, one end abuts against the end surface of the main thrust disc 11, and the other end abuts against the second support seat 15 fixedly connected with the shaft 1; during the process that the power source is switched from transmitting positive driving torque to transmitting reverse dragging torque (such as braking energy recovery of an electric vehicle), the shaft first elastic assembly 13 pushes the main thrust disc 11 to move axially and press the thrust rolling body 10, so that the thrust rolling body 10 is prevented from separating from the thrust slope groove in this working condition, that is, the main effect of the shaft first elastic assembly 13 is to ensure that the thrust rolling body 10 can roll as a central symmetric body during the switching to the reverse dragging working condition;

[0108] Further, the thrust unit is provided with three groups of secondary thrust slope grooves 7-1 and main thrust slope grooves 11-1 clamping the thrust rolling body 10; in the installed state, the thrust rolling body 10 is arranged in the main thrust slope groove 7-1 in the positive driving torque direction of the power source, and the axial displacement of the highest point of the main thrust slope groove 7-1 is 3 mm;

[0109] Further, the torsion unit comprises a main torsion disc 12, a torsion rolling body 9 and a shaft second elastic assembly 14; the inner ring of the main torsion disc 12 is provided with sliding splines and is sleeved on the outer ring splines of the main thrust disc 11, so as to realize the axial movement but circumferential fixed connection with the shaft 1; the opposite end surfaces of the main torsion disc 12 and the non-tapered end of the shaft movable cone disc 6 are respectively provided with a main torsion slope groove 12-1 and a secondary torsion slope groove 8-1; the main torsion slope groove 12-1 and the secondary torsion slope groove 8-1 are both circumferentially distributed one-way slope grooves rising from one end to the other end, and are symmetrically arranged with the torsion rolling body 9 as the center;

[0110] The shaft second elastic assembly 14 is sleeved on the shaft 1, one end abuts against the end surface of the main torsion disc 12, and the other end abuts against the second support seat 15 fixedly connected with the shaft 1; the shaft second elastic assembly 14 pushes the main torsion disc 12 to press and roll the torsion rolling body 9, so as to realize the positive rotation of the power source connected with the shaft 1 until the mechanical clearance 30 is eliminated, and to form the pre-tightening force of the ring-shaped transmission member 5 between the shaft cone unit and the second shaft cone unit;

[0111] Further, the torsion unit is provided with three sets of clamping the torsion rolling body 9, the auxiliary torsion slope groove 7-1 and the main torsion slope groove 12-1; in the installed state, the torsion rolling body 9 is arranged at the middle position of the auxiliary torsion slope groove 12-1, and the annular transmission component 5 is limited at the maximum working radius state of the one-axis cone disc unit by the one-axis second elastic component 14; the elastic coefficient of the one-axis second elastic component 14 is smaller than the minimum elastic coefficient of the two-axis second elastic component 29.

[0112] In the installed state, the thrust of the two-axis second elastic component 29 does not act on the annular transmission component 5, and the pre-tightening force of the system is provided by the torsion unit.

[0113] Embodiment 3

[0114] As shown in Figure 2 and Figure 3 , the embodiment is an alternative structure of the torsion unit, which is different from the embodiment 1 in that the torsion unit is provided with the circumferential elastic component 26 between the main torsion disc 12 and the auxiliary torsion disc 8 to replace the auxiliary torsion slope groove 8-1, the torsion rolling body 9 and the main torsion slope groove 12-1, thereby realizing the positive torque provided by the power source.

[0115] Embodiment 4

[0116] The embodiment discloses a hybrid vehicle provided with the cone disc type continuously variable transmission device in the embodiment 1, the one-axis 1 is connected with the motor output end of the vehicle, the two-axis 16 is connected with the wheel end of the vehicle, and the transmission speed ratio can be self-adaptively adjusted through the change of the wheel speed.

[0117] Embodiment 5

[0118] The embodiment discloses a three-wheel or two-wheel motorcycle provided with the cone disc type continuously variable transmission device in the embodiment 1, the one-axis 1 is connected with the power source output end, and the two-axis 16 is connected with the wheel end, and the transmission speed ratio can be self-adaptively adjusted through the change of the wheel speed.

[0119] Embodiment 6

[0120] The embodiment discloses a wind power gear box provided with the continuously variable transmission device in the embodiment 1, the one-axis 1 is connected with the rotating shaft of the installed wind wheel (blade), and the two-axis 16 is connected with the rotating shaft of the generator, and the torque when the wind wheel rotates can be amplified through the continuously variable transmission device in the embodiment, so that the minimum wind speed of the starting generator is reduced.

[0121] It is worth mentioning that the embodiments are only used to illustrate the technical solutions of the utility model and are not limited. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions, and all should be covered in the scope of the claims of the utility model.

Claims

1. A cone-disc type continuously variable transmission device with a dynamic cone disc pressurized, comprising a first-shaft cone disc unit, a second-shaft cone disc unit, and an annular transmission member for transmitting and connecting the first-shaft cone disc unit and the second-shaft cone disc unit, wherein the first-shaft cone disc unit comprises a first shaft, a first-shaft fixed cone disc, and a first-shaft dynamic cone disc; the first-shaft fixed cone disc is sleeved on the first shaft in a manner that they can rotate with each other and are fixed in at least one axial direction, and the first-shaft dynamic cone disc is sleeved on the first-shaft fixed cone disc in a manner that is fixed in the circumferential direction and slidable in the axial direction; the second-shaft cone disc unit comprises two shafts and the second-shaft fixed cone disc and the second-shaft dynamic cone disc, whose cone surfaces are arranged opposite to each other; and a power source is connected to the first shaft or the second shaft, characterized in that: Also includes thrust unit and torque unit; The thrust unit includes a thrust rolling body and a secondary thrust plate and a main thrust plate arranged on one side of a non-conical surface end of a shaft-moving cone disc, the main thrust plate being connected to a shaft in a circumferentially fixed and axially movable manner, the secondary thrust plate being arranged on one side of the main thrust plate close to the shaft-moving cone disc and fixedly connected to the non-conical surface end of the shaft-moving cone disc or integrally manufactured; the opposite end surfaces of the main thrust plate and the secondary thrust plate are respectively provided with a main thrust ramp groove and a secondary thrust ramp groove which are centrally symmetrical for clamping the thrust rolling body, so that when the main thrust plate and the shaft-moving cone disc transmit torque, an axial thrust can be generated on the shaft-moving cone disc, and the clamping force required for the annular transmission member to transmit torque is formed, and the axial stroke generated by the mutual rotation between the main thrust plate and the secondary thrust plate matches the axial stroke required for speed regulation of the shaft-moving cone disc; The torsion unit includes a main torsion plate which is sleeved on the one shaft in an axially sliding and circumferentially fixed manner, and the main torsion plate is used to provide a forward rotation torque to the power source.

2. The cone-disc type continuously variable transmission device with dynamic cone disc pressurization according to claim 1, characterized in that: The torsion unit further comprises a secondary torsion plate, a torsion rolling element and a second elastic component of a shaft; The auxiliary torsion plate is fixedly connected to the non-conical end of a shaft-moving cone plate, or is integrally formed with the shaft-moving cone plate and is located at the non-conical end of the shaft-moving cone plate. The main torsion plate is arranged on the side of the auxiliary torsion plate away from the shaft-moving cone plate. The main torsion plate and the auxiliary torsion plate are respectively provided with main torsion ramp grooves and auxiliary torsion ramp grooves in the circumferential direction, which are symmetrically distributed around the torsion rolling element. The main torsion ramp grooves and auxiliary torsion ramp grooves are unidirectional ramp grooves that rise from one end to the other end. At least two groups of auxiliary torsion ramp grooves and main torsion ramp grooves are provided, which are evenly distributed along the circumferential direction. One end of the second elastic component of the first shaft abuts against the end surface of the main torsion plate away from the auxiliary torsion plate and provides the main torsion plate with axial pressure toward the auxiliary torsion ramp groove.

3. The cone-disc type continuously variable transmission device with dynamic cone disc pressurization according to claim 2, characterized in that: The thrust unit further includes a first elastic component of a shaft, which is sleeved on the shaft and arranged on a side of the main thrust disc away from the first shaft movable cone disc to provide an axial thrust to the main thrust disc in a direction toward the first shaft movable cone disc, and an end surface of the main thrust disc away from the first shaft movable cone disc abuts against a fifth support seat fixedly connected to the shaft; At least two groups of auxiliary thrust ramp grooves and main thrust ramp grooves are evenly distributed along the circumferential direction of the main thrust disc, and the auxiliary thrust ramp grooves and main thrust ramp grooves are both V-shaped slope groove structures that rise symmetrically from the low point to both ends or unidirectional slope grooves that rise from one end to the other end.

4. The cone-disc type continuously variable transmission device with dynamic cone disc pressurization according to claim 3, characterized in that: When the one shaft is connected to the power source and serves as the driving shaft, in the installed state, the thrust rolling body is arranged at the lowest point in the main thrust ramp groove, the torsion rolling body is arranged in the middle position of the main torsion ramp groove, and the annular transmission member is located at the minimum working radius in the one shaft cone disk unit.

5. The cone-disc type continuously variable transmission device with dynamic cone disc pressurization according to claim 3, characterized in that: When the two shafts are connected to a power source and serve as driving shafts, in the installed state, the thrust rolling body is arranged at a position close to the highest point in the main thrust ramp groove, the torsion rolling body is arranged at the middle position of the main torsion ramp groove, and the annular transmission member is located at the maximum working radius in the one-shaft cone disk unit.

6. The cone-disc type continuously variable transmission device with dynamic cone disc pressurization according to claim 3, characterized in that: It also includes a centrifugal speed regulating unit, wherein the two-shaft fixed cone discs are connected to the two-shaft fixed sleeves, and the two-shaft movable cone discs are connected to the two-shaft sleeves in a manner of being circumferentially fixed and axially movable; The centrifugal speed regulating unit includes a dynamic centrifugal disc, a fixed centrifugal disc, a centrifugal block and a first elastic component of the two shafts. The dynamic centrifugal disc is connected to the dynamic conical disc of the two shafts, and the first elastic component of the two shafts is connected to the dynamic centrifugal disc; The axially opposite end faces of the fixed centrifugal disc and the dynamic centrifugal disc are respectively provided with a fixed centrifugal slope groove and a dynamic centrifugal slope groove, the centrifugal block is clamped between the dynamic centrifugal slope groove and the fixed centrifugal slope groove, and the centrifugal block compresses the first elastic components of the two shafts under the action of the rotating centrifugal force and causes the dynamic centrifugal disc to move axially, while providing space for synchronous and same-direction axial movement of the two-shaft dynamic cone discs for speed regulation.

7. The cone-disc type continuously variable transmission device with dynamic cone disc pressurization according to claim 6, characterized in that: The dynamic centrifugal slope groove and the fixed centrifugal slope groove are radially inclined from low to high slope raceways, and at least two groups of dynamic centrifugal slope grooves and fixed centrifugal slope grooves are arranged evenly distributed along the circumferential direction to clamp the centrifugal body.

8. The cone-disc type continuously variable transmission device with dynamic cone disc pressurization according to claim 6, characterized in that: When the one shaft is connected to the power source and serves as the driving shaft, the fixed centrifugal disc is fixedly sleeved on the two shafts and arranged on the side of the non-conical end of the movable conical disc of the two shafts; the movable centrifugal disc is sleeved on the two shafts in an axially movable and circumferentially fixed manner and arranged on the side of the fixed centrifugal disc away from the movable conical disc of the two shafts; The fixed centrifugal disc is provided with a through hole, so that the non-conical end of the two-axis dynamic conical disc and the end surface of the dynamic centrifugal disc are abutted and connected through a speed regulating push rod passing through the through hole on the fixed centrifugal disc; In the installed state, the annular transmission member is at the maximum working radius of the two-shaft cone disc unit, and during the torque transmission process, the axial thrust generated by the thrust unit acting on the two-shaft movable cone disc through the annular transmission member is smaller than the elastic force of the first elastic component of the two shafts.

9. The cone-disc type continuously variable transmission device with dynamic cone disc pressurization according to claim 6, characterized in that: When the two shafts are connected to a power source and serve as driving shafts, the centrifugal speed regulating unit further includes a second elastic component of the two shafts; One end of the second elastic component of the second shaft is fixedly connected to the second shaft sleeve, and the other end presses against the non-conical end of the movable cone disk of the second shaft and provides thrust to the movable cone disk of the second shaft toward the fixed cone disk of the second shaft; The dynamic centrifugal disc is connected to the two shafts in a sleeve manner in an axially movable and circumferentially fixed manner, and is arranged on one side of the non-conical surface end of the fixed conical disc of the two shafts. The fixed centrifugal disc is fixedly connected to the non-conical surface end of the fixed conical disc of the two shafts or is integrally formed and arranged on the side of the dynamic centrifugal disc close to the fixed conical disc of the two shafts; The two-shaft fixed conical disc and the fixed centrifugal disc are both provided with through holes, and the dynamic centrifugal disc and the two-shaft dynamic conical disc are in contact with each other via a speed regulating push rod passing through the through holes; In the installed state, the first elastic component of the second shaft compresses the second elastic component of the second shaft through the speed regulating push rod, and ensures that the annular transmission member is at the minimum working radius of the second shaft cone disk unit.

10. The cone-disc type continuously variable transmission device with dynamic cone disc pressurization according to claim 9, characterized in that: The two-axis second elastic component is provided with at least two groups of elastic members with different elastic coefficients, and each elastic coefficient of the two-axis second elastic component is smaller than the elastic coefficient of the two-axis first elastic component.

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