CN111043278B - Transmission wheel and transmission mechanism - Google Patents
Transmission wheel and transmission mechanism Download PDFInfo
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- CN111043278B CN111043278B CN201911417757.XA CN201911417757A CN111043278B CN 111043278 B CN111043278 B CN 111043278B CN 201911417757 A CN201911417757 A CN 201911417757A CN 111043278 B CN111043278 B CN 111043278B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/36—Pulleys
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/36—Pulleys
- F16H55/46—Split pulleys
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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
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/02—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts
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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 belongs to the technical field of speed changing devices, and particularly relates to a driving wheel and a driving mechanism. According to the driving wheel provided by the embodiment of the invention, the wheel sheet assemblies are movably connected with the wheel frame, the radius of the circumference formed by the plurality of wheel sheet assemblies and contacted with the driving wheel and the driving belt is changed by applying external force to the wheel sheet assemblies, the radius is determined by the positions of the wheel sheet assemblies, and the transmission ratio is determined by the radius, so that stepless speed change is realized.
Description
Technical Field
The invention belongs to the technical field of speed changing devices, and particularly relates to a driving wheel and a driving mechanism.
Background
This section provides background information related to the present disclosure only and is not necessarily prior art.
The Continuously variable transmission, which is called Continuously variable transmission for short as CVT, refers to a transmission system capable of Continuously obtaining any transmission ratio in a transmission range, and the optimal matching between the transmission system and the engine working condition can be obtained through the Continuously variable transmission.
At present, the transmission ratio of the CVT is changed by mainly extruding the transmission belt through the movable V-shaped belt wheel side wings and forcing the transmission radius of the driving wheel and the driven wheel to change, the axial pressure required by the mode is large, the metal-to-metal extrusion contact easily causes the deformation or the over-fast abrasion and scratch of the transmission belt, the service life of a transmission mechanism is influenced, and the heat generation is serious at high speed.
Disclosure of Invention
The invention aims to at least solve the problems of deformation, abrasion and the like of a transmission belt caused by changing the transmission ratio in the prior art. The purpose is realized by the following technical scheme:
the invention provides a driving wheel, comprising:
a wheel carrier;
each wheel sheet assembly is connected with the wheel frame, and the wheel sheet assemblies are circumferentially arranged;
each wheel sheet component is movably connected with the wheel frame, and each wheel sheet component can synchronously move towards the direction close to or far away from the axis of the wheel frame so as to change the radius of the driving wheel.
According to the driving wheel of the embodiment of the invention, the driving wheel can be a driving wheel in a transmission mechanism, and can also be a driven wheel or a driving wheel driven wheel of the transmission mechanism, the driving wheel in the application is adopted, the driving wheel comprises a wheel frame and a plurality of wheel sheet assemblies, compared with the driving wheel in the prior art, the application divides the driving wheel into the plurality of wheel sheet assemblies, the wheel sheet assemblies are connected on the wheel frame, the wheel frame is used as an installation foundation, when the transmission mechanism acts, the wheel frame rotates under the action of external force, the wheel sheet assemblies are driven to rotate together, wherein the wheel sheet assemblies are provided with a plurality of wheel sheet assemblies, the free ends of the plurality of wheel sheet assemblies, namely the ends which are not connected with the wheel frame, form a stress surface contacted with the driving belt, the wheel sheet assemblies are movably connected on the wheel frame, the external force is applied to the wheel sheet assemblies, so that each wheel sheet assembly slides along the radial direction of the wheel frame, and the sliding amount of the wheel frame is consistent, meanwhile, the connecting position of each wheel sheet assembly and the wheel frame is changed, namely the radius of the circumference where each wheel sheet assembly is located is changed, the radius of the circumference formed by the plurality of wheel sheet assemblies is finally changed, and the size of the circumference determines the size of the transmission ratio, so that stepless speed change is realized, the problems of deformation and abrasion of the transmission belt caused by the fact that the transmission belt is extruded by the belt wheel in the prior art are solved, the extrusion damage of the transmission belt is eliminated, and the transmission efficiency is improved to a certain extent.
In addition, the transmission wheel according to the embodiment of the invention can also have the following additional technical characteristics:
in some embodiments of the invention, each of the wheel blade assemblies comprises:
the connecting piece is movably connected to the wheel frame;
a wheel piece connected to the connecting piece, and the wheel piece is arranged to contact with the transmission belt.
In some embodiments of the invention, the surface of the wheel blade is recessed to form a receiving groove configured to receive the drive belt.
In some embodiments of the present invention, the bottom of the receiving groove is an arc-shaped surface.
The second aspect of the present invention also provides a transmission mechanism comprising:
a frame;
in any of the above technical solutions, the driving wheel is connected to the frame;
the driving piece is connected with the driving wheel through a transmission mechanism and is arranged to drive the wheel sheet assembly to move relative to the wheel frame so as to change the radius of the driving wheel.
The transmission mechanism of the embodiment of the invention has the same advantages as the transmission wheel in any technical scheme, and is not repeated herein, and in addition, each wheel sheet assembly is driven to move by the driving piece, so that the automation of stepless speed change is realized, and the efficiency of stepless speed change is improved.
In some embodiments of the invention, the transmission mechanism comprises:
the first transmission assemblies are connected with the wheel sheet assemblies in a one-to-one correspondence mode;
wherein, a plurality of first transmission assembly all with the driving piece is connected.
In some embodiments of the invention, each of the first transmission assemblies comprises:
a slider slidably connected to the wheel assembly;
the transmission rod is connected to the rack in a rotatable mode, the driving piece is in transmission connection with one end of the transmission rod, and the sliding block is connected to the other end of the transmission rod in a rotatable mode.
In some embodiments of the invention, the drive link comprises:
the first rod body is in transmission connection with the driving piece;
the second rod body is connected to the first rod body, and the sliding block is connected to the second rod body in a rotatable mode;
the connecting part of the second rod body and the first rod body is rotatably connected to the rack, and the length of the second rod body is smaller than that of the first rod body.
In some embodiments of the invention, the transmission mechanism further comprises an elastic member;
the elastic piece is clamped between the first rod body and the rack.
In some embodiments of the invention, the transmission mechanism further comprises:
and the driving piece is connected with each first rod body through the thrust bearing.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a front view of a transmission wheel according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a transmission mechanism according to an embodiment of the present invention;
fig. 3 is a front view of a transmission according to an embodiment of the present invention.
Reference numerals:
1. a driving wheel; 11. a wheel carrier; 12. a wheel blade assembly; 121. a connecting member; 122. a wheel sheet; 1221. accommodating grooves;
2. a frame;
3. a drive member;
4. a first transmission assembly; 41. a slider; 42. a first rod body; 43. a second rod body;
5. a second transmission assembly; 51. a worm; 52. a turbine; 53. a rack;
6. an elastic member;
7. a thrust bearing;
8. a transmission device; 81. a driving wheel; 82. a driven wheel; 83. a transmission belt.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1, a transmission wheel 1 according to an embodiment of the present invention includes:
a wheel frame 11;
each wheel sheet assembly 12 is connected with the wheel frame 11, and the wheel sheet assemblies 12 are arranged circumferentially;
each wheel sheet assembly 12 is movably connected with the wheel frame 11, and each wheel sheet assembly 12 can synchronously move towards the direction close to or far away from the axis of the wheel frame 11 so as to change the radius of the transmission wheel 1.
According to the driving wheel 1 of the embodiment of the invention, the driving wheel 1 can be a driving wheel 81 in a transmission device, and can also be a driven wheel 82 of the transmission device or the driving wheel 81 and the driven wheel 82 adopt the driving wheel 1 in the present application, the driving wheel 1 includes a wheel frame 11 and a plurality of wheel sheet assemblies 12, compared with the driving wheel 1 in the prior art, the present application divides the driving wheel 1 into a plurality of wheel sheet assemblies 12, the wheel sheet assemblies 12 are connected to the wheel frame 11, the wheel frame 11 is used as an installation base, when the transmission device acts, the wheel frame 11 is rotated under the action of external force, the wheel sheet assemblies 12 are driven to rotate together, wherein, the wheel sheet assemblies 12 are provided with a plurality, each wheel sheet assembly 12 is connected to the wheel frame 11, and the plurality of wheel sheet assemblies 12 are arranged in a circumferential direction, the free ends of the plurality of wheel sheet assemblies 12, namely the ends which are not connected to the wheel frame 11, form a stress surface which is contacted with the driving belt 83, the wheel sheet assemblies 12 are connected to the wheel frame 11 in a movable manner, an external force is applied to the wheel sheet assemblies 12, so that each wheel sheet assembly 12 slides along the radial direction of the wheel frame 11, the sliding amount of each wheel sheet assembly 12 relative to the wheel frame 11 is consistent, the connecting position of each wheel sheet assembly 12 and the wheel frame 11 is changed, namely, the radius of the circumference where each wheel sheet assembly 12 is located is changed, the radius of the circumference formed by the wheel sheet assemblies 12 is changed, namely, the radius of the transmission wheel 1 is changed, and the size of the circumference determines the size of the transmission ratio, so that stepless speed change is realized, the problems of deformation and abrasion of the transmission belt 83 caused by the fact that the transmission belt 83 is extruded by the belt wheel in the prior art are solved, the extrusion damage of the transmission belt 83 is eliminated, and the transmission efficiency is improved to a certain extent.
It should be noted that the movement of each wheel assembly 12 toward or away from the wheel frame 11 can be achieved manually, or can be set automatically, and is not limited herein.
In some embodiments of the present invention, each wheel sheet assembly 12 includes a connecting member 121 and a wheel sheet 122, one end of the connecting member 121 is provided with the wheel sheet 122, and the other end of the connecting member 121 is slidably connected to the wheel frame 11, so that the connecting member 121 moves toward or away from the wheel frame 11, and the distance between each wheel sheet 122 and the wheel frame 11 is changed, that is, the radius of the circumference where each wheel sheet 122 is located is changed, and finally, the radius of the circumference formed by the plurality of wheel sheets 122 is changed.
Wherein, the direction of the connecting element 121 can be set to be the same as the radial direction of the wheel frame 11, or to be inclined relative to the radial direction of the wheel frame 11, in one embodiment, the direction of the connecting element 121 is the same as the radial direction of the wheel frame 11, the connection between the connecting element 121 and the wheel piece 122 is to make the two not relatively rotate or move, which can be detachable connection, such as screw connection, clamping connection or insertion connection, or non-detachable connection, such as an integral structure, welding or bonding, the connection between the connecting element 121 and the wheel frame 11 is in the following modes, the first mode is that the wheel frame 11 is set as a hollow structure, the connecting element 121 is slidably connected in the hollow structure, the second mode is that the connecting element 121 is set as a hollow structure, the wheel frame 11 is slidably connected in the hollow structure, the third mode is that the wheel frame 11 is set as a solid structure, a sliding groove is arranged on the surface, the connecting piece 121 is in limit fit with the sliding groove, and fourth, the connecting piece 121 is of a solid structure, the sliding groove is formed in the surface, the wheel carrier 11 is in limit fit with the sliding groove, and the connecting mode between the connecting piece 121 and the wheel carrier 11 is not limited to the above description.
In some embodiments of the present invention, an accommodating groove 1221 is formed in a surface of the wheel piece 122 in a recessed manner, when the transmission belt 83 is connected to the transmission wheel 1, the transmission belt 83 is in a position-limiting fit with the accommodating groove 1221, the accommodating groove 1221 includes a groove bottom and groove walls, and the groove walls are disposed on two sides of the groove bottom and play a role in limiting the transmission belt 83, so as to prevent the transmission belt 83 from being separated from the transmission wheel 1 during transmission to cause transmission failure.
The width of the accommodating groove 1221 is greater than or equal to the width of the transmission belt 83, so that the transmission wheel 1 can adapt to different transmission belts 83, and the application range is expanded.
In some embodiments of the present invention, the groove bottom is a position where the driving wheel 1 contacts the driving belt 83, that is, a stressed surface of the driving wheel 1, and the groove bottom is set to be an arc surface, so that a contact area between the driving wheel 1 and the driving belt 83 can be effectively increased, force transmission can be better achieved, and transmission reliability can be improved.
As shown in fig. 2, the second aspect of the present invention also provides a transmission mechanism comprising:
a frame 2;
in the transmission wheel 1 of any embodiment, the transmission wheel 1 is connected to the frame 2;
the driving part 3, the driving part 3 is connected with the driving wheel 1 through a transmission mechanism, and the driving part 3 is arranged for driving the wheel component 12 to move relative to the wheel carrier 11 so as to change the radius of the driving wheel 1.
The transmission mechanism of the embodiment of the invention has the same advantages as the transmission wheel 1 of any embodiment, and is not described herein again, and in addition, each wheel assembly 12 is driven by the driving part 3 to move, so that the automation of stepless speed change is realized, the efficiency of stepless speed change is improved, and the transmission wheel 1 and the frame 2 synchronously rotate under the driving of the driving part.
It should be noted that the number of the driving parts 3 and the number of the transmission mechanisms are at least one, one driving wheel 1 may be driven by one driving part 3 and one transmission mechanism, and one driving wheel 1 may also be driven by a plurality of driving parts 3 and a plurality of transmission mechanisms, in an embodiment, one driving wheel 1 is driven by two driving parts 3 and two driving mechanisms, the two driving parts 3 are respectively disposed at two sides of the driving wheel 1, the two driving parts 3 are respectively connected with the driving wheel 1 through the transmission mechanisms, the driving part 3 and the transmission mechanism at one side will be described below, and the description will not be repeated if the other sides are the same.
In some embodiments of the present invention, the transmission mechanism includes a first transmission assembly 4 and a second transmission assembly 5, the first transmission assembly 4 and the second transmission assembly 5 are both connected to the frame 2, the second transmission assembly 5 is connected to a driving end of the driving member 3, the first transmission assembly 4 is connected to the second transmission assembly 5, in one embodiment, the driving member is a motor, the output of the motor is converted into a rotational speed through the first transmission assembly 4 and the second transmission assembly 5 into a force capable of moving the wheel assembly 12 along the radial direction of the wheel frame 11, the second transmission assembly 5 includes a worm 51, a worm wheel 52 and a rack 53, the worm 51 is connected to the driving end of the driving member 3, the first transmission assembly 4 is connected to the rack 53, the worm wheel 52 is matched with the worm 51, the rack 53 is matched with the worm wheel 52, the worm wheel 51 is used for changing the magnitude and direction of the driving force output by the driving member 3, however, the driving force is still rotational output, the rotational driving force is converted into linear motion of the rack 53 through the matching of the turbine 52 and the rack 53, the linear motion is transmitted to the wheel sheet assemblies 12 through the first transmission assemblies 4, the number of the first transmission assemblies 4 is equal to that of the wheel sheet assemblies 12, each wheel sheet assembly 12 is connected to each first transmission assembly 4, the driving part 3 transmits the driving force to the wheel sheet assemblies 12 through the first transmission assemblies 4 and the second transmission assemblies 5, the movement of the wheel sheet assemblies 12 along the radial direction of the wheel frame 11 is realized, the radius of the arc formed by the driving wheel 1 is finally changed, and the transmission ratio is changed.
Wherein, owing to be provided with a plurality of first transmission assembly 4, first transmission assembly 4 is connected on second transmission assembly 5, if it is great to be provided with the required space of a plurality of second transmission assembly 5, be unfavorable for the structural arrangement, therefore drive mechanism still includes footstep bearing 7, footstep bearing 7 is connected on frame 2, footstep bearing 7 is as the connection media between first transmission assembly 4 and the second transmission assembly 5, can realize that a second transmission assembly 5 is connected with a plurality of first transmission assembly 4 simultaneously, has simplified the structure.
The thrust bearing 7 is mainly used for bearing axial load, and has the advantages of low friction factor, high rotating speed and aligning performance.
In some embodiments of the present invention, to realize the movement of each wheel blade assembly 12 along the radial direction of the wheel frame 11, a force along the radial direction of the wheel frame 11 needs to be provided, the first transmission assembly 4 includes a transmission rod and a sliding block 41, the transmission rod is rotatably connected to the frame 2, the sliding block 41 is rotatably connected to the transmission rod, the sliding block 41 is slidably connected to the wheel blade 122, the driving member 3 can drive the transmission rod to rotate around the rotatable connection with the frame 2, the rotation motion is decomposed, the movement in the radial direction and the movement in the axial direction of the wheel frame 11 can be obtained, the movement in the radial direction of the wheel frame 11 is used to realize the sliding of each wheel blade assembly 12 on the wheel frame 11, in order to avoid the axial motion from damaging the connection between each wheel blade assembly 12 and the wheel frame 11, and causing the separation of each wheel blade assembly 12 from the wheel frame 11, the axial movement needs to be transferred to other positions, and therefore, a sliding block 41 is provided, the sliding block 41 is slidably connected to the wheel piece 122 of the wheel piece assembly 12, when the transmission rod rotates, the disassembled radial movement makes the wheel piece 122 slide along the radial direction of the wheel frame 11 to the direction close to the wheel frame 11 to reduce the radius of the formed circumference, the disassembled axial movement makes the first relative wheel piece 122 perform axial movement, and the position of the wheel piece 122 in the axial direction does not change.
Wherein the slider 41 is slidably connected below the wheel 122 without affecting the contact between the wheel 122 and the belt 83.
In some embodiments of the present invention, the transmission rod includes a first rod 42 and a second rod 43, the first rod 42 and the second rod 43 are an integral structure, and can improve the strength of the transmission rod, the first rod 42 is in transmission connection with the driving member 3 through a thrust bearing 7, the second rod 43 is in rotatable connection with the sliding block 41, the connection between the first rod 42 and the second rod 43 is in rotatable connection with the frame 2, the transmission rod is driven by the driving member 3 to rotate around the connection between the first rod 42 and the second rod 43, when the first rod 42 moves downward, the second rod 43 moves upward, the second rod 43 rotates counterclockwise relative to the sliding block 41, the sliding block 41 slides relative to the wheel piece 122, and the wheel piece 122 slides in a direction away from the wheel frame 11 along the radial direction of the wheel frame 11 to increase the radius of the formed circle, when the first rod 42 moves upward, the second rod 43 moves downward, the second rod 43 rotates clockwise relative to the slider 41, the slider 41 slides relative to the wheel piece 122, so that the wheel piece 122 slides along the radial direction of the wheel frame 11 to approach the wheel frame 11 to increase the radius of the formed circumference, wherein the length of the first rod 42 is greater than that of the second rod 43, according to the lever principle, the two moments acting on the lever must be equal, and power x power arm is resistance x resistance arm, in this application, power is the acting force transmitted by the driving part 3 to the first rod 42, power arm is the first rod 42, resistance is the acting force transmitted by the second rod 43 to the wheel piece 122, resistance arm is the second rod 43, since the length of the first rod 42 is greater than that of the second rod 43, power is less than resistance, and by this arrangement, labor saving can be achieved, the requirements for the driving member 3 are low, and the economic cost is reduced.
The connection between the first rod 42 and the thrust bearing 7 is a detachable connection, which may be a threaded connection, a snap connection or an abutment, in one embodiment.
In some embodiments of the present invention, the elastic member 6 is further included, the elastic member 6 is sandwiched between the first rod 42 and the frame 2, when the first rod 42 moves downward, the second rod 43 moves upward, the first rod 42 presses the elastic member 6, so that the elastic member 6 is in a compressed state, when the first rod 42 moves upward, the second rod 43 moves downward, the first rod 42 no longer presses the elastic member 6, and because the first rod 42 is abutted against the thrust bearing 7, the first rod 42 cannot move in the opposite direction to return to the initial position, so that the first rod 42 returns to the initial position under the action of the elastic force of the elastic member 6 itself.
The elastic member 6 is a cylindrical spring, and at an initial position, the elastic member is in an uncompressed state, and two ends of the elastic member 6 are always in contact with the first rod 42 and the frame 2.
As shown in fig. 3, the third aspect of the present invention further provides a transmission device 8, which includes two transmission mechanisms, namely a first transmission mechanism and a second transmission mechanism, wherein the transmission wheel 1 in the first transmission mechanism is a driving wheel 81, the transmission wheel 1 in the second transmission mechanism is a driven wheel 82, and the driving wheel 81 and the driven wheel 82 are connected through a transmission belt 83.
The acceleration operation of the transmission 8 of the present application is described below:
the driving part 3 in the first transmission mechanism moves, the driving force is transmitted to the thrust bearing 7 through the second transmission component 5, the driving force is dispersed to each first transmission component 4 through the thrust bearing 7, the driving force enables the first rod body 42 to move downwards, the second rod body 43 integrated with the first rod body 42 moves upwards due to the rotatable connection of the transmission rod and the rack 2, the tail end of the second rod body 43 drives the wheel piece 122 to do curvilinear motion, the second rod body 43 is rotatably connected with the sliding block 41, the sliding block 41 is slidably connected with the wheel piece 122, the sliding block 41 moves inwards along the wheel piece 122, the wheel piece component 12 moves in the direction far away from the wheel frame 11 along the radial direction of the wheel frame 11, the radius of the circumference finally formed by the wheel piece 122 is increased, and the elastic part 6 is in a compressed state at the moment;
the driving member 3 in the second transmission mechanism moves in the opposite direction to drive the second transmission assembly 5 to return to the initial position, under the action of the elastic member 6, the first rod 42 returns to the initial position, the elastic member 6 is no longer in a compressed state, the first rod 42 moves upwards, because the transmission rod is rotatably connected with the frame 2, the second rod 43 integrally structured with the first rod 42 moves downwards, the end of the second rod 43 drives the wheel piece 122 to do a curved motion, because the second rod 43 is rotatably connected with the slider 41, the slider 41 is slidably connected with the wheel piece 122, the slider 41 moves outwards along the wheel piece 122, the wheel piece assembly 12 moves towards a direction close to the wheel frame 11 along the radial direction of the wheel frame 11, so that the radius of the circumference finally formed by the wheel piece 122 is reduced;
the radius of the driving pulley 81 is increased and the radius of the driven pulley 82 is decreased, thereby realizing the acceleration process.
In addition, the initial transmission ratio of the driving wheel 81 and the driven wheel 82 can be adjusted according to the parameters of the power system of the vehicle, and the deceleration process is opposite to the above description and is not repeated herein.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. A transmission mechanism, comprising:
a frame;
the drive wheel, the drive wheel is connected in the frame, the drive wheel includes:
a wheel carrier;
each wheel piece assembly is connected with the wheel carrier and is circumferentially arranged, each wheel piece assembly comprises a connecting piece and a wheel piece, the connecting piece is movably connected to the wheel carrier, the wheel piece is connected to the connecting piece, the wheel piece is arranged to be in contact with the transmission belt, the surface of the wheel piece is sunken to form an accommodating groove, the accommodating groove is arranged to accommodate the transmission belt, and the bottom of the accommodating groove is an arc-shaped surface;
each wheel sheet assembly is movably connected with the wheel frame, and can synchronously move towards the direction close to or far away from the axis of the wheel frame so as to change the radius of the driving wheel;
the two driving pieces are respectively arranged on two sides of the driving wheel and are respectively connected with the driving wheel through a transmission mechanism, and the driving pieces are arranged to drive the wheel piece assembly to move relative to the wheel carrier so as to change the radius of the driving wheel;
the first transmission assemblies are connected with the wheel sheet assemblies in a one-to-one correspondence mode, the first transmission assemblies are connected with the driving piece, each first transmission assembly comprises a sliding block and a transmission rod, the sliding block is connected to the wheel sheet assemblies in a sliding mode, the transmission rod is connected to the rack in a rotatable mode, the driving piece is in transmission connection with one end of the transmission rod, and the sliding block is connected to the other end of the transmission rod in a rotatable mode; the transmission rod comprises a first rod body and a second rod body, the first rod body is in transmission connection with the driving part, the second rod body is connected to the first rod body, and the sliding block is rotatably connected to the second rod body;
the connecting part of the second rod body and the first rod body is rotatably connected to the rack, and the length of the second rod body is smaller than that of the first rod body.
2. The transmission mechanism as claimed in claim 1, further comprising an elastic member;
the elastic piece is clamped between the first rod body and the rack.
3. The transmission mechanism as claimed in claim 1, further comprising:
and the driving piece is connected with each first rod body through the thrust bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911417757.XA CN111043278B (en) | 2019-12-31 | 2019-12-31 | Transmission wheel and transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911417757.XA CN111043278B (en) | 2019-12-31 | 2019-12-31 | Transmission wheel and transmission mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN111043278A CN111043278A (en) | 2020-04-21 |
| CN111043278B true CN111043278B (en) | 2022-01-25 |
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| CN201911417757.XA Active CN111043278B (en) | 2019-12-31 | 2019-12-31 | Transmission wheel and transmission mechanism |
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| CN (1) | CN111043278B (en) |
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| CN206017642U (en) * | 2016-08-24 | 2017-03-15 | 王万乐 | Lever type variable-speed regulator |
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| JP2001141034A (en) * | 1999-11-04 | 2001-05-25 | 文龍 ▲荘▼ | Pulley structure |
| CN201982616U (en) * | 2011-04-19 | 2011-09-21 | 顾曙华 | Belt pulley |
| CN203035896U (en) * | 2012-11-26 | 2013-07-03 | 重庆林腾机电有限公司 | Belt wheel |
| CN204140823U (en) * | 2014-08-06 | 2015-02-04 | 赵斌 | A kind of belt sheave |
| CN209414539U (en) * | 2018-12-29 | 2019-09-20 | 广东拓斯达科技股份有限公司 | It is driven idle pulley and manipulator transmission mechanism |
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| JPS60234162A (en) * | 1984-05-02 | 1985-11-20 | Koji Matsuura | Method of steplessly changing speed and device therefor |
| JP2002250420A (en) * | 2001-02-26 | 2002-09-06 | Hitoshi Fujisawa | Continuously stepless variable speed change gear |
| JP2011080577A (en) * | 2009-10-10 | 2011-04-21 | Hiroaki Kondo | Super continuously variable transmission |
| CN204420029U (en) * | 2015-02-03 | 2015-06-24 | 张宗涛 | Buncher |
| CN206017642U (en) * | 2016-08-24 | 2017-03-15 | 王万乐 | Lever type variable-speed regulator |
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