CN112483620A - Speed regulator and speed regulating device - Google Patents

Abstract

The invention relates to the technical field of vehicle speed regulation, in particular to a speed regulator and a speed regulating device, wherein the speed regulator comprises a rotating wheel set, the rotating wheel set comprises a fixed wheel fixed on a main shaft and a movable wheel freely sliding along the axial direction of the main shaft, the movable wheel and the fixed wheel form a combined wheel set with adjustable walking space, the speed regulator also comprises a movable plate connected with the movable wheel and a driving module driving the movable plate to move along the axial direction, and the driving module drives the movable wheel to move along the axial direction by means of the movable plate so as to adjust the walking space. The speed regulator and the speed regulating device provided by the invention can realize active regulation and control of the transmission ratio, are accurate and reliable in speed regulation control and high in speed regulation efficiency, and can effectively save electric energy consumption.

Description

Speed regulator and speed regulating device

Technical Field

The invention relates to the technical field of vehicle speed regulation, in particular to a speed regulator and a speed regulating device.

Background

In the prior art, as shown in fig. 1, an electric vehicle generally connects a power output main shaft 11 'of a vehicle driving motor with a central shaft of a wheel, i.e., a driven shaft 21', through a speed regulating device. The speed regulating device comprises a driving wheel set 1 ', a driven wheel set 2' and a belt 3 ', as shown in fig. 2, the driving wheel set 1' comprises a fixed wheel 12 'and a movable wheel 13' which are sleeved on a main shaft 11 'of a driving motor, the back parts of the fixed wheel 12' and the movable wheel 13 'are oppositely embedded into the belt 3', the fixed wheel 12 'is fixed at the end part of the main shaft 11', and the movable wheel 13 'can make a small amount of displacement along the axial direction of the main shaft 11'. As shown in fig. 3, the driven wheel set 2 ' includes a first driven side wheel 22 ' and a second driven side wheel 23 ' which are sleeved on the driven shaft 21 ' of the wheel, the back parts of the first driven side wheel 22 ' and the second driven side wheel 23 ' are opposite to each other and can be embedded into the belt 3 ', the first driven side wheel 22 ' is fixed at the middle part of the driven shaft 21 ', the second driven side wheel 23 ' can axially move along the axial direction of the driven shaft 21 ', and one side of the second driven side wheel 23 ' is provided with a spring 24 ' for providing axial pressure.

As shown in FIG. 2, a plurality of raceways 132 'are provided in a concave plate 131' at the back of a driving wheel 13 'of a driving wheel set 1', the raceways 132 'are inclined at a low inner part and a high outer part, and are divided into three stages and uniformly distributed on the circumference thereof, and a plurality of centrifugal rollers 133' are respectively arranged in the raceways 132 'and pressed by a chuck 134'. When the driving motor spindle 11 ' rotates, the centrifugal roller 133 ' is subject to centrifugal force, the centrifugal roller 133 ' flies outwards along the raceway 132 ' on the driving wheel 13 ' under the action of the centrifugal force as the centrifugal force increases with the increase of the rotation speed, the centrifugal roller 133 ' pushes the driving wheel 13 ' to extrude the belt 3 ' outwards under the action of the chuck 134 ' fixed on the spindle 11 ' and the slope of the inner raceway 132 ' of the driving wheel 13 ', and the second driven wheel 23 ' of the driven wheel set 2 ' is forced to move outwards by the compression spring 24 ' of the second driven wheel 23 ' due to the constant center distance between the driving wheel set 1 ' and the driven wheel set 2 ', so that the space between the first driven wheel 22 ' and the second driven wheel 23 ' is enlarged to reduce the working diameter of the driven wheel set 2 ', thus the working diameter of the driving wheel set 1 ' is gradually enlarged, the working diameter of the driven wheel set 2 ' is gradually reduced, and the transmission ratio is gradually reduced, the stepless speed change transmission from low speed to high speed is realized. On the contrary, when the rotation speed of the driving motor is reduced, the centrifugal force applied to the centrifugal roller 133 'is reduced, the axial thrust of the driving wheel 13' is also reduced, the driving wheel 13 'moves in the opposite direction, the working diameter of the driving wheel set 1' is reduced, the second driven wheel 23 'moves inwards under the action of the spring 24', the belt 3 'is extruded outwards, the working diameter of the driven wheel set 2' is increased, the transmission ratio is gradually increased, and the stepless speed change transmission from high speed to low speed is realized.

However, the speed regulating device in the prior art belongs to passive speed regulation, the change of the transmission ratio depends on the rotating speed of the main shaft 11', and the active speed regulation with adjustable and controllable transmission ratio cannot be realized.

Disclosure of Invention

The invention provides a speed regulator and a speed regulating device, aiming at solving the technical problems that the speed regulating device in the prior art belongs to passive speed regulation and cannot actively regulate and control a transmission ratio, and the speed regulator and the speed regulating device can realize active regulation and control of the transmission ratio and are accurate and reliable in speed regulating control.

The technical scheme of the invention is as follows:

the utility model provides a speed regulator, includes the runner band, the runner band is including the fixed wheel that is fixed in the main shaft and the axial free slip's of edge main shaft driving wheel, driving wheel and fixed wheel constitute walking interval adjustable combination formula wheelset, the speed regulator include with fly leaf and drive that the driving wheel is connected the fly leaf is along axial displacement's drive module, the drive module with the help of the fly leaf drive the driving wheel is along axial displacement in order to adjust the walking interval.

Further, the driving wheel is mounted on the main shaft through a spline structure, and the driving wheel rotates along with the main shaft and can freely slide along the axial direction of the main shaft.

Further, the driving wheel is connected with the movable plate through the rotating body, the rotating body comprises a first rotating portion fixedly connected with the driving wheel and a second rotating portion fixedly connected with the movable plate, and the first rotating portion and the second rotating portion rotate relatively.

Further, the driving module includes:

the driving plate is sleeved on a shaft sleeve of the main shaft and is in threaded fit with the shaft sleeve, the main shaft is rotatably assembled with the shaft sleeve, the driving plate is fixedly connected to the movable plate through a connecting piece, and the connecting piece can move along the axial direction but is limited to rotate;

the driving module is used for driving the shaft sleeve to rotate so that the driving plate drives the movable plate to move axially.

Furthermore, the driving module drives the shaft sleeve to rotate by means of a worm and gear set, the worm and gear set comprises a worm driven by the driving module and a worm gear fixedly connected with the shaft sleeve, and the driving module drives the shaft sleeve to rotate sequentially through the worm and the worm gear.

Further, the speed regulator also comprises a shell for accommodating the driving plate and a connecting piece, wherein the connecting piece is a cylinder penetrating through the shell, and the cylinder can slide relative to the shell.

Further, the cylinder is a plurality of, the casing is formed with a plurality of through-holes, the cylinder is in with the help of linear bearing assembly in the through-hole.

In another aspect of the present invention, there is provided a speed adjusting device, including:

the running gear set according to any one of the above, configured as a driving gear set, which drives a driven gear set via a transmission belt;

the driven wheel set is also a combined wheel set with adjustable walking distance.

Further, the driven wheel set comprises a first driven side wheel and a second driven side wheel, the first driven side wheel is fixed on the driven shaft, the second driven side wheel is slidably mounted on the driven shaft and can rotate along with the driven shaft, and an elastic piece for providing axial pressure to the second driven side wheel towards the first driven side wheel is arranged on one side of the second driven side wheel.

Compared with the prior art, the technical scheme of the invention has the following beneficial effects:

(1) according to the speed regulator, the centrifugal roller and the roller path are not arranged in the driving wheel, the walking distance between the driving wheel and the fixed wheel is controlled by the cooperation of the movable plate and the driving module, so that passive speed regulation is changed into active speed regulation, the transmission ratio can be regulated at any time according to the requirement, and the speed regulation is more flexible and reliable;

(2) the speed regulating device does not depend on a centrifugal roller and a raceway structure in the driving wheel, can change the transmission ratio more quickly, has high speed regulating efficiency, and can accelerate or decelerate the vehicle more quickly and save more electricity;

(3) by arranging the spline structure, the driving wheel can rotate along with the main shaft and can slide along the axial direction of the main shaft, the centering precision of the main shaft and the driving wheel is high, and large torque can be transmitted;

(4) the worm gear set is used for driving the shaft sleeve, so that the transmission is more accurate and stable, and the speed of the speed regulator is more stable and accurate.

Drawings

FIG. 1 is a schematic structural diagram of a prior art governor device;

FIG. 2 is a schematic structural diagram of a driving wheel set in the prior art;

FIG. 3 is a schematic diagram of a driven wheel set according to the prior art;

FIG. 4 is a schematic structural diagram of a governor according to a first embodiment of the present invention;

FIG. 5 is an exploded view of a rotating wheel set according to a first embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a governor (without a housing) according to a first embodiment of the present invention;

fig. 7 is a schematic sectional view of a governor (with a housing) according to a first embodiment of the present invention;

fig. 8 is a schematic structural view of a through hole in a housing according to a first embodiment of the present invention;

fig. 9 is a schematic view of the internal structure of a speed adjusting device according to a second embodiment of the present invention;

fig. 10 is a schematic structural diagram of a speed adjusting device according to a second embodiment of the invention in a first view;

fig. 11 is a schematic structural diagram of a speed adjusting device according to a second embodiment of the invention in a second viewing angle;

fig. 12 is a schematic structural diagram of a driven wheel set according to a second embodiment of the present invention.

Wherein,

the driving wheel set 1 ', the main shaft 11', the fixed wheel 12 ', the driving wheel 13', the concave disc 131 ', the raceway 132', the centrifugal roller 133 ', the chuck 134', the driven wheel set 2 ', the driven shaft 21', the first driven side wheel 22 ', the second driven side wheel 23', the spring 24 'and the belt 3';

the driving device comprises a rotating wheel set 1, a main shaft 11, an external spline 111, a shaft sleeve 112, a shaft sleeve seat 113, a fixed wheel 12, a movable wheel 13, a movable plate 14, a rotating body 15, a first rotating part 151, a second rotating part 152, a driving module 16, a driving module 161, a worm 1611, a worm wheel 1612, an intermediate idle wheel 1613, a driving plate 162, a connecting piece 163, a contact bearing 1631, a shell 17, a through hole 171, a linear bearing 172, a rotating bearing 173 and a sealing piece 174;

the driven wheel set 2, the driven shaft 21, the first driven side wheel 22, the second driven side wheel 23, the sliding sleeve 231, the elastic element 24, the transmission assembly 25, the central shaft 26 and the limiting plate 27;

a transmission belt 3.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the 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 a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The first embodiment is as follows:

the present embodiment provides a speed governor, as shown in fig. 4, the speed governor includes a rotating wheel set 1, the rotating wheel set 1 includes a fixed wheel 12 fixed to a main shaft 11 and a movable wheel 13 capable of freely sliding along an axial direction of the main shaft 11, the movable wheel 13 and the fixed wheel 12 form a combined wheel set with adjustable walking distance, the speed governor further includes a movable plate 14 connected to the movable wheel 13 and a driving module 16 for driving the movable plate 14 to move along the axial direction of the main shaft 11, and the driving module 16 drives the movable wheel 13 to move along the axial direction by means of the movable plate 14 to adjust the walking distance. Specifically, as shown in fig. 4, the main shaft 11 is an output shaft connected to an output end of a driving motor of a vehicle, and the fixed sheave 12 and the movable sheave 13 are sleeved on the main shaft 11, wherein the fixed sheave 12 is fixed to an end portion of the output shaft and is rotatable along with the main shaft 11, the movable sheave 13 is disposed on one side of the fixed sheave 12 and is rotatable along with the main shaft 11 and is freely slidable along an axial direction of the main shaft 11, and when the movable sheave 13 slides, a traveling distance between the fixed sheave 12 and the movable sheave 13 changes. Further, a movable plate 14 and a driving module 16 are sequentially disposed on one side of the movable wheel 13, and the driving module 16 drives the movable wheel 13 to move in the axial direction by means of the movable plate 14 so as to adjust the walking distance.

Thus, when the speed governor of the present embodiment is applied to the prior art, if the rotating wheel set 1 of the present embodiment is configured as the driving wheel set in fig. 2, the driving wheel 13 is no longer provided with a centrifugal roller and a raceway, the traveling distance between the driving wheel 13 and the fixed wheel 12 is controlled by the cooperation of the movable plate 14 and the driving module 16, so that the passive speed regulation is changed into the active speed regulation, the driving module 161 can be a linear motor, an air cylinder or an electric cylinder, etc., and the traveling distance between the fixed wheel 12 and the driving wheel 13 can be adjusted by adjusting and controlling the driving module 161, so that the transmission ratio can be adjusted at any time as required, and the speed regulation is more flexible and reliable. In addition, in the prior art, when a vehicle is accelerated, the driving wheel 13 needs to be accelerated to a high rotating speed to realize a small transmission ratio, and when the vehicle is decelerated, the driving wheel 13 needs to be decelerated to a low rotating speed to realize a large transmission ratio, so that the time consumption during acceleration and deceleration is long, the vehicle is accelerated and decelerated slowly, and high electric energy needs to be consumed during the acceleration and deceleration, but the speed regulating device of the embodiment does not depend on a centrifugal roller and a roller path structure in the driving wheel 13, so that the transmission ratio can be changed more quickly, the speed regulating efficiency is high, and the vehicle is accelerated or decelerated more quickly and saves more electricity.

Compared with the prior art, the speed regulator of the embodiment can realize active regulation and control of the transmission ratio, the speed regulation is more flexible and reliable, the transmission ratio can be changed more quickly, the vehicle can accelerate or decelerate more quickly, more electricity is saved, and electric energy is effectively saved.

Further, in the present embodiment, the driving sheave 13 is mounted on the main shaft 11 by means of a spline structure, specifically, as shown in fig. 5, the front end of the main shaft 11 is configured in the form of an external spline 111, the center hole of the driving sheave 13 is configured in the form of an internal spline, and the internal spline on the driving sheave 13 passes through the front end of the main shaft 11 and is engaged with the external spline 111 on the main shaft 11, so that the driving sheave 13 can rotate along with the main shaft 11 while being freely slidable in the axial direction of the main shaft 11. In the embodiment, by arranging the spline structure, the movable wheel 13 can rotate along with the main shaft 11 and can slide along the axial direction of the main shaft 11, and the main shaft 11 and the movable wheel 13 are high in centering precision and can transmit large torque.

Further, the driving sheave 13 of the present embodiment is connected to the movable sheave 14 through the rotating body 15, and specifically, as shown in fig. 5 to 6, the rotating body 15 includes a first rotating portion 151 fixedly connected to the driving sheave 13 and a second rotating portion 152 fixedly connected to the movable sheave 14, and the first rotating portion 151 and the second rotating portion 152 are relatively rotatable, so that the movable sheave 14 may not rotate but only drive the driving sheave 13 to move linearly in the axial direction of the main shaft 11 in a case where the driving sheave 13 rotates along with the main shaft 11. The rotating body 15 is an alternative but not limited to a bearing, and if the inner ring of the bearing is configured as the first rotating portion 151 and the outer ring of the bearing is configured as the second rotating portion 152, the first rotating portion 151 can rotate relative to the second rotating portion 152.

Preferably, as shown in fig. 4 and 6, the driving module 16 of the present embodiment includes a driving module 161, a driving plate 162 and a connecting member 163, wherein the driving plate 162 is sleeved on the shaft sleeve 112 of the main shaft 11 and is in threaded fit with the shaft sleeve 112, the driving plate 162 is fixedly connected to the movable plate 14 through the connecting member 163, the connecting member 163 can move axially along the main shaft 11 but is limited to rotate, and the driving module 161 is configured to drive the shaft sleeve 112 to rotate so that the driving plate 162 drives the movable plate 14 to move axially. Specifically, the spindle 11 is rotatably assembled with a shaft sleeve 112, the shaft sleeve 112 is rotatably assembled with a shaft sleeve seat 113 configured to be fixedly installed, that is, the spindle 11 can rotate relative to the shaft sleeve 112, the shaft sleeve 112 can rotate relative to the shaft sleeve seat 113, and the shaft sleeve 112 is driven to rotate by the driving module 161. Further, one end of the shaft sleeve 112 is rotatably assembled with the shaft sleeve seat 113, the other end is sleeved with a driving plate 162 and is in threaded connection with the driving plate 162, the driving plate 162 is fixedly connected with the movable plate 14 through a connecting member 163, the connection 163 is formed as a cylinder, movable in the axial direction of the main shaft 11 together with the driving plate 162 and the movable plate 14, but is restricted from rotating about the sleeve 112 such that neither the drive plate 162 nor the movable plate 14 can rotate, then when the drive module 161 drives the sleeve 112 to rotate, since the driving plate 162 cannot rotate along with the sleeve 112 and the sleeve 112 cannot move axially when being restrained by the driving module 161, the driving plate 162 and the sleeve 112 correspond to a lead screw nut and lead screw structure, the driving plate 162 can move linearly along the axial direction of the spindle 11 or the sleeve 112 when the sleeve 112 rotates, the driving plate 162 can drive the movable wheel 13 to move linearly in the axial direction through the connecting member 163 and the movable plate 14.

Further, the driving module 161 of the present embodiment drives the shaft sleeve 112 to rotate by means of a worm and gear set, as shown in fig. 4 and fig. 6, the driving module 161 is a right-angle motor, which can reduce the size of the speed regulator in the axial direction of the main shaft 11, the worm and gear set includes a worm 1611 driven by the driving module 161 and a worm wheel 1612 fixedly connected to the shaft sleeve 112, and the driving module 161 sequentially drives the shaft sleeve 112 to rotate by means of the worm 1611 and the worm wheel 1612. Preferably, an intermediate idle wheel 1613 is further disposed between the worm 1611 and the worm wheel 1612, so that the worm wheel 1612 rotates in the same direction as the worm 1611. The embodiment transmits through the worm gear set, so that the transmission is more accurate and stable, and the speed regulation of the speed regulator is more stable and accurate.

Further, the speed governor of the present embodiment further includes a housing 17 that accommodates the drive plate 162 and a coupling member 163, the coupling member 163 is mounted to the housing 17 via a linear bearing 172, and the housing 17 restricts the rotation of the coupling member 163 about the boss 112 so as to be slidable only in the axial direction with respect to the housing 17, and the boss 113 is also fixedly mounted to the housing 17. Specifically, as shown in fig. 7 to 8, a through hole 171 is formed in the housing 17, the connecting element 163 penetrates the housing 17 through the through hole 171, and a contact bearing 1631 is further provided between the connecting element 163 and the through hole 171, so that a contact area between the connecting element 163 and the housing 17 can be increased, and the connecting element 163 and the housing 17 can be protected to some extent. A linear bearing 172 fixed to the housing 17 is further provided between the driving plate 162 and the contact bearing 1631 to reduce friction and facilitate sliding of the connecting member 163 in the through hole 171 of the housing 17. Preferably, the connecting member 163 is provided in plural, and is disposed in the circumferential direction of the driving plate 162 at regular intervals, and the housing 17 is formed with plural through holes 171 corresponding to the connecting member 163 one by one, so that the rotation of the connecting member 163 around the sleeve 112 can be better restricted by the cooperation of the plural connecting members 163 and the through holes 171.

As shown in fig. 4 and 6, the main shaft 11 of the present embodiment is rotatably assembled with the housing 17 by means of two rotating bearings 173, specifically, the two rotating bearings 173 make the main shaft 11 rotate more smoothly, and the outer sides of the two rotating bearings 173 are respectively provided with a sealing member 174 for realizing dynamic sealing and sealing protection of the worm and gear set and the shaft sleeve 112.

Therefore, the speed regulator provided by the embodiment can realize active regulation and control of the transmission ratio, is stable, accurate and reliable in speed regulation and control, is high in speed regulation efficiency, and can effectively save electric energy consumption.

Example two:

the present embodiment provides a speed adjusting device, as shown in fig. 9-11, the speed adjusting device includes a driving wheel set, a driving belt 3 and a driven wheel set 2, the driving wheel set drives the driven wheel set 2 through the driving belt 3, wherein the driving wheel set is a rotating wheel set 1 in the first embodiment, and the driving belt 3 can be a belt or a metal belt.

Further, the driven wheel set 2 of the present embodiment is also a combined wheel set with adjustable walking pitch, specifically, as shown in fig. 12, the driven wheel set 2 includes a first driven side wheel 22 and a second driven side wheel 23, the first driven side wheel 22 is fixed on the driven shaft 21, the second driven side wheel 23 is slidably mounted on the driven shaft 21 and can rotate along with the driven shaft 21, and one side of the second driven side wheel 23 is provided with an elastic member 24 for providing axial pressure to the second driven side wheel 23 towards the first driven side wheel 22. Specifically, the first driven side wheel 22 is fixed in the middle of the driven shaft 21, the second driven side wheel 23 is arranged on one side of the first driven side wheel 22, the second driven side wheel 23 is mounted on the driven shaft 21 through a sliding sleeve 231, and can rotate along with the driven shaft 21 and move along the axial direction of the driven shaft 21, one side of the second driven side wheel 23 is provided with a limit plate 27 fixed with the driven shaft 21, the limit plate 27 and the second driven side wheel 23 rotate along with the driven shaft 21, and an elastic member 24 is further arranged between the limit plate 27 and the second driven side wheel 2, the elastic member 24 can be selected from, but not limited to, a spring, and can provide axial pressure for the second driven side wheel 23 so as to press the driving belt 3 with the first driven side wheel 22, so that the driving wheel set drives the driven wheel set 2 to rotate.

Preferably, the driven shaft 21 of the present embodiment is connected to the central shaft 26 of the wheel through a transmission assembly 25, so as to drive the wheel to rotate, and the transmission assembly 25 can be selected from, but is not limited to, a worm gear assembly.

Therefore, the speed regulating device provided by the embodiment can realize active regulation and control of the transmission ratio by driving the driven wheel set to rotate through the driving wheel set, and is stable, accurate and reliable in speed regulating control, high in speed regulating efficiency and capable of effectively saving electric energy consumption.

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 person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (9)

1. The utility model provides a speed regulator, includes runner wagon (1), runner wagon (1) is including fixed wheel (12) that are fixed in main shaft (11) and along axial free slip's of main shaft (11) driving wheel (13), driving wheel (13) and fixed wheel (12) constitute walking interval adjustable combination formula wheelset, a serial communication port, the speed regulator include with fly leaf (14) and the drive that driving wheel (13) are connected fly leaf (14) along axial displacement's drive module (16), drive module (16) with the help of fly leaf (14) drive driving wheel (13) are along axial displacement in order to adjust the walking interval.

2. A speed governor according to claim 1, characterized in that the driving pulley (13) is mounted on the main shaft (11) by means of a spline structure, the driving pulley (13) following the rotation of the main shaft (11) while being freely slidable in the axial direction of the main shaft (11).

3. A governor according to claim 1 or 2, characterized in that the moving wheel (13) is connected to a moving plate (14) via a rotating body (15), the rotating body (15) comprising a first rotating portion (151) fixedly connected to the moving wheel (13) and a second rotating portion (152) fixedly connected to the moving plate (14), the first rotating portion (151) and the second rotating portion (152) rotating relatively.

4. A governor according to claim 1, characterised in that the drive module (16) comprises:

the driving plate (162) is sleeved on a shaft sleeve (112) of the main shaft (11) and is in threaded fit with the shaft sleeve (112), the main shaft (11) and the shaft sleeve (112) are rotatably assembled, the driving plate (162) is fixedly connected to the movable plate (14) through a connecting piece (163), and the connecting piece (163) can move along the axial direction but is limited to rotate;

the driving module (161) is used for driving the shaft sleeve (112) to rotate so that the driving plate (162) drives the movable plate (14) to move along the axial direction.

5. A speed regulator according to claim 4, characterized in that the drive module (161) drives the shaft sleeve (112) to rotate by means of a worm and gear set, the worm and gear set comprises a worm (1611) driven by the drive module (161) and a worm gear (1612) fixedly connected with the shaft sleeve (112), and the drive module (161) drives the shaft sleeve (112) to rotate sequentially through the worm (1611) and the worm gear (1612).

6. A governor according to claim 4, further comprising a housing (17) housing the drive plate (162) and a connection member (163), the connection member (163) being a post extending through the housing (17), the post being slidable relative to the housing (17).

7. A governor according to claim 6, wherein the cylinder is plural, and the housing (17) is formed with a plurality of through-holes (171), and the cylinder is fitted to the through-holes (171) by means of linear bearings (172).

8. A governor device, comprising:

rotating wheel set according to any of claims 1-7, configured as a driving wheel set, which drives a driven wheel set (2) via a drive belt (3);

the driven wheel set (2), the driven wheel set (2) also is the combination formula wheelset of walking interval adjustable.

9. A device according to claim 8, characterised in that the driven wheel group (2) comprises a first driven side wheel (22) and a second driven side wheel (23), the first driven side wheel (22) being fixed to the driven shaft (21), the second driven side wheel (23) being slidably mounted on the driven shaft (21) while being rotatable with the driven shaft (21), an elastic member (24) being provided on one side of the second driven side wheel (23) for providing the second driven side wheel (23) with an axial pressure towards the first driven side wheel (22).

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