Speed ​​regulator and speed regulating device

Abstract

The present invention relates to the technical field of vehicle speed regulation, and specifically to a speed regulator and a speed regulating device, wherein the speed regulator comprises a rotating wheel set, wherein the rotating wheel set comprises a fixed wheel fixed to a main shaft and a moving wheel freely sliding along the axial direction of the main shaft, wherein the moving wheel and the fixed wheel constitute a combined wheel set with adjustable travel spacing, wherein the speed regulator further comprises a movable plate connected to the moving wheel and a driving module driving the movable plate to move axially, wherein the driving module drives the moving wheel to move axially with the aid of the movable plate to adjust the travel spacing. The speed regulator and the speed regulating device provided by the present invention can realize active regulation of the transmission ratio, and the speed regulation control is accurate and reliable, and the speed regulation efficiency is high, which can effectively save power consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle speed regulation, and in particular to a speed regulator and a speed regulation device. Background Art

[0002] In the prior art, Figure 1 As shown, electric vehicles generally connect the power output main shaft 11' of the vehicle driving motor with the central axis of the wheel, that is, the driven shaft 21', through a speed regulating device. The speed regulating device includes a driving wheel set 1', a driven wheel set 2' and a belt 3', such as Figure 2 As shown, the driving wheel set 1' includes a fixed wheel 12' and a driven wheel 13' sleeved on the main shaft 11' of the driving motor. The backs of the fixed wheel 12' and the driven wheel 13' facing each other can be embedded with a belt 3'. The fixed wheel 12' is fixed at the end of the main shaft 11', and the driven wheel 13' can be slightly displaced along the axis direction of the main shaft 11'. Figure 3 As shown, the driven wheel group 2' includes a first slave side wheel 22' and a second slave side wheel 23' which are mounted on the driven shaft 21' of the wheel, and the backs of the first slave side wheel 22' and the second slave side wheel 23' face each other and can be embedded in the above-mentioned belt 3'. The first slave side wheel 22' is fixed to the middle part of the driven shaft 21', and the second slave side wheel 23' can move axially along the axial direction of the driven shaft 21', and a spring 24' for providing axial pressure is arranged on one side of the second slave side wheel 23'.

[0003] like Figure 2As shown, a plurality of raceways 132' are provided in a concave disc 131' on the back of the driving wheel 13' in the driving wheel assembly 1'. The raceways 132' are low inside and high outside and are sloped and evenly distributed on the circumference in three levels. A plurality of centrifugal rollers 133' are respectively installed in each raceway 132' and pressed by a chuck 134'. When the main shaft 11' of the driving motor rotates, the centrifugal roller 133' is subjected to centrifugal force. As the speed increases, the centrifugal force increases. Under the action of the centrifugal force, the centrifugal roller 133' flies outward along the raceway 132' on the driven wheel 13'. Since the chuck 134' is fixed on the main shaft 11' and does not move, it and the slope of the inner raceway 132' of the driven wheel 13' work together, the centrifugal roller 133' pushes the driven wheel 13' and squeezes the belt 3' outward. Since the center distance between the driving wheel group 1' and the driven wheel group 2' remains unchanged, the compression spring 24' of the second slave side wheel 23' of the driven wheel group 2' is forced to move outward, so that the interval between the first slave side wheel 22' and the second slave side wheel 23' is enlarged, and the working diameter of the driven wheel group 2' is reduced. In this way, the working diameter of the driving wheel group 1' gradually increases, and the working diameter of the driven wheel group 2' gradually decreases, so that the transmission ratio gradually decreases, and a stepless speed transmission from low speed to high speed is realized. On the contrary, when the speed of the driving motor decreases, the centrifugal force on the centrifugal roller 133' decreases, and the axial thrust of the driven wheel 13' also decreases. The driven wheel 13' moves in the opposite direction, and the working diameter of the driving wheel set 1' decreases. At this time, the second slave side wheel 23' moves inward under the action of the spring 24', and squeezes the belt 3' outward, so that the working diameter of the driven wheel set 2' increases, the transmission ratio gradually increases, and a continuously variable transmission from high speed to low speed is realized.

[0004] However, the speed regulating device in the above-mentioned prior art belongs to passive speed regulation, and the change of the transmission ratio depends on the rotation speed of the main shaft 11 ', and active speed regulation with adjustable and controllable transmission ratio cannot be achieved. Summary of the invention

[0005] In order to solve the technical problem that the speed regulating device in the prior art is passive speed regulating and cannot actively adjust the transmission ratio, the present invention proposes a speed regulator and a speed regulating device, which can realize active adjustment of the transmission ratio, and the speed regulation control is accurate and reliable.

[0006] The technical solution of the present invention:

[0007] A speed regulator includes a rotating wheel group, wherein the rotating wheel group includes a fixed wheel fixed to a main shaft and a moving wheel that slides freely along the axial direction of the main shaft, the moving wheel and the fixed wheel constitute a combined wheel group with adjustable travel spacing, the speed regulator includes a movable plate connected to the moving wheel and a driving module that drives the movable plate to move axially, and the driving module drives the moving wheel to move axially with the help of the movable plate to adjust the travel spacing.

[0008] Furthermore, the moving wheel is mounted on the main shaft by means of a spline structure, and the moving wheel rotates with the main shaft and can slide freely along the axial direction of the main shaft.

[0009] Furthermore, the moving wheel is connected to the movable plate via a rotating body, the rotating body comprises a first rotating part fixedly connected to the moving wheel and a second rotating part fixedly connected to the movable plate, and the first rotating part and the second rotating part rotate relatively.

[0010] Furthermore, the driving module includes:

[0011] A driving plate, the driving plate is sleeved on the shaft sleeve of the main shaft and is threadedly matched with the shaft sleeve, the main shaft and the shaft sleeve are rotatably assembled, the driving plate is fixedly connected to the movable plate through a connecting piece, and the connecting piece can move in the axial direction but is limited in rotation;

[0012] A driving module is used to drive the shaft sleeve to rotate so that the driving plate drives the movable plate to move axially.

[0013] Furthermore, the driving module drives the sleeve to rotate by means of a worm gear set, the worm gear set includes a worm driven by the driving module and a worm wheel fixedly connected to the sleeve, and the driving module drives the sleeve to rotate through the worm and the worm wheel in turn.

[0014] Furthermore, the speed regulator also includes a shell that accommodates the drive plate and the connecting member, and the connecting member is a column that penetrates the shell, and the column can slide relative to the shell.

[0015] Furthermore, there are a plurality of columns, the housing is formed with a plurality of through holes, and the columns are assembled in the through holes by means of linear bearings.

[0016] Another aspect of the present invention provides a speed regulating device, comprising:

[0017] The rotating wheel set as described in any one of the above items, wherein the rotating wheel set is configured as a driving wheel set, and the driving wheel set drives the driven wheel set through a transmission belt;

[0018] The driven wheel set is also a combined wheel set with adjustable travel spacing.

[0019] Furthermore, the driven wheel group includes a first slave side wheel and a second slave side wheel, the first slave side wheel is fixed on the driven shaft, the second slave side wheel is slidably installed on the driven shaft and can rotate with the driven shaft, and one side of the second slave side wheel is provided with an elastic member for providing axial pressure to the second slave side wheel toward the first slave side wheel.

[0020] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0021] (1) The speed regulator of the present invention no longer has centrifugal rollers and raceways in its moving wheel, and the travel distance between the moving wheel and the fixed wheel is controlled by the cooperation of the movable plate and the driving module, thereby converting passive speed regulation into active speed regulation, and the transmission ratio can be adjusted as needed at any time, making the speed regulation more flexible and reliable;

[0022] (2) The speed regulating device of the present invention does not rely on the centrifugal roller and raceway structure in the driving wheel, and can change the transmission ratio more quickly, with high speed regulation efficiency, faster vehicle acceleration or deceleration, and more power saving;

[0023] (3) The present invention provides a spline structure, which not only allows the driving wheel to rotate with the main shaft but also to slide along the axial direction of the main shaft, but also enables the main shaft and the driving wheel to have high centering accuracy and transmit large torque;

[0024] (4) The present invention transmits the shaft sleeve through the worm gear set, making the transmission more accurate and stable, thereby making the speed regulation of the speed regulator more stable and accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a speed regulating device in the prior art;

[0026] Figure 2 It is a structural schematic diagram of a driving wheel group in the prior art;

[0027] Figure 3 It is a structural schematic diagram of a driven wheel set in the prior art;

[0028] Figure 4 It is a structural schematic diagram of a speed regulator according to Embodiment 1 of the present invention;

[0029] Figure 5 This is an exploded schematic diagram of the rotating wheel assembly according to the first embodiment of the present invention;

[0030] Figure 6 It is a cross-sectional schematic diagram of a speed regulator (without a housing) according to Embodiment 1 of the present invention;

[0031] Figure 7 It is a cross-sectional schematic diagram of a speed regulator (with a housing) according to Embodiment 1 of the present invention;

[0032] Figure 8 This is a schematic diagram of the structure of the through hole on the shell of the first embodiment of the present invention;

[0033] Fig. 9 Schematic diagram of the internal structure of the speed regulating device according to the second embodiment of the present invention;

[0034] Fig.10It is a structural schematic diagram of the speed regulating device of the second embodiment of the present invention at a first viewing angle;

[0035] Fig.11 is a schematic structural diagram of a speed regulating device according to Embodiment 2 of the present invention at a second viewing angle;

[0036] Fig.12 It is a schematic structural diagram of the driven wheel group according to the second embodiment of the present invention.

[0037] in,

[0038] Driving wheel set 1', main shaft 11', fixed wheel 12', driving wheel 13', concave plate 131', raceway 132', centrifugal roller 133', chuck 134', driven wheel set 2', driven shaft 21', first slave side wheel 22', second slave side wheel 23', spring 24', belt 3';

[0039] Rotating wheel set 1, main shaft 11, external spline 111, sleeve 112, sleeve seat 113, fixed wheel 12, moving wheel 13, movable plate 14, rotating body 15, first rotating part 151, second rotating part 152, driving module 16, driving module 161, worm 1611, worm wheel 1612, intermediate idler wheel 1613, driving plate 162, connecting member 163, contact bearing 1631, housing 17, through hole 171, linear bearing 172, rotating bearing 173, sealing member 174;

[0040] Driven wheel assembly 2, driven shaft 21, first slave side wheel 22, second slave side wheel 23, sliding sleeve 231, elastic member 24, transmission assembly 25, central shaft 26, and limiting plate 27;

[0041] Transmission belt 3. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0044] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0045] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0046] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0047] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0048] Embodiment 1:

[0049] This embodiment provides a speed regulator, such as Figure 4 As shown, the speed regulator includes a rotating wheel set 1, which includes a fixed wheel 12 fixed to the main shaft 11 and a moving wheel 13 that can slide freely along the axial direction of the main shaft 11. The moving wheel 13 and the fixed wheel 12 constitute a combined wheel set with adjustable travel spacing. The speed regulator also includes a movable plate 14 connected to the moving wheel 13 and a driving module 16 that drives the movable plate 14 to move axially along the main shaft 11. The driving module 16 drives the moving wheel 13 to move axially with the help of the movable plate 14 to adjust the travel spacing. Specifically, as Figure 4 As shown, the main shaft 11 is an output shaft connected to the output end of the vehicle driving motor, and the fixed wheel 12 and the driving wheel 13 are sleeved on the main shaft 11, wherein the fixed wheel 12 is fixed to the end of the output shaft and can rotate with the main shaft 11, and the driving wheel 13 is arranged on one side of the fixed wheel 12, can rotate with the main shaft 11, and can slide freely along the axis direction of the main shaft 11, and when the driving wheel 13 slides, the travel distance between the fixed wheel 12 and the driving wheel 13 changes. Furthermore, a movable plate 14 and a driving module 16 are sequentially provided on one side of the driving wheel 13, and the driving module 16 drives the driving wheel 13 to move axially with the help of the movable plate 14 to adjust the travel distance.

[0050] Thus, when the speed regulator of this embodiment is applied to the prior art, for example, the rotating wheel set 1 of this embodiment is configured as Figure 2In the active wheel group, the centrifugal roller and raceway are no longer arranged in the moving wheel 13, and the travel distance between the moving wheel 13 and the fixed wheel 12 is controlled by the movable plate 14 and the driving module 16, so that the passive speed regulation is converted into active speed regulation, and the driving module 161 can be a linear motor, a cylinder or an electric cylinder, etc., and the travel distance between the fixed wheel 12 and the moving wheel 13 can be adjusted by adjusting and controlling the driving module 161, so that the transmission ratio can be adjusted as needed at any time, making the speed regulation more flexible and reliable. In addition, in the prior art, when the vehicle accelerates, the moving wheel 13 needs to be accelerated to a very high speed to achieve a small transmission ratio, and when the vehicle decelerates, the moving wheel 13 needs to be decelerated to a very low speed to achieve a large transmission ratio. The time consumption during this acceleration and deceleration period is long, the vehicle accelerates and decelerates slowly, and a high amount of electric energy is consumed during this acceleration and deceleration period. However, the speed regulating device of this embodiment does not rely on the centrifugal roller and raceway structure in the moving wheel 13, can change the transmission ratio faster, has high speed regulation efficiency, and accelerates or decelerates the vehicle faster and saves more electricity.

[0051] From the above content, it can be seen that the speed regulator of this embodiment can realize active control of the transmission ratio compared with the prior art, and the speed regulation is more flexible and reliable. At the same time, the transmission ratio can be changed faster, the vehicle accelerates or decelerates faster and more power-efficiently, effectively saving electricity.

[0052] Furthermore, in this embodiment, the driving wheel 13 is mounted on the main shaft 11 by means of a spline structure. Specifically, Figure 5 As shown, the front end of the main shaft 11 is configured in the form of an external spline 111, and the center hole of the moving wheel 13 is configured in the form of an internal spline. The internal spline on the moving wheel 13 passes through the front end of the main shaft 11 and cooperates with the external spline 111 on the main shaft 11, so that the moving wheel 13 can rotate with the main shaft 11 and can slide freely along the axial direction of the main shaft 11. By providing a spline structure, this embodiment not only allows the moving wheel 13 to rotate with the main shaft 11 and slide along the axial direction of the main shaft 11, but also makes the centering accuracy of the main shaft 11 and the moving wheel 13 high, and can transmit large torque.

[0053] Furthermore, the moving wheel 13 of this embodiment is connected to the movable plate 14 through the rotating body 15. Specifically, Figure 5-6 As shown, the rotating body 15 includes a first rotating part 151 fixedly connected to the moving wheel 13 and a second rotating part 152 fixedly connected to the movable plate 14. The first rotating part 151 and the second rotating part 152 can rotate relative to each other, so that when the moving wheel 13 rotates with the main shaft 11, the movable plate 14 does not rotate, but only drives the moving wheel 13 to perform linear motion along the axial direction of the main shaft 11. The rotating body 15 can be selected from but not limited to a bearing. For example, the inner ring of the bearing can be configured as the first rotating part 151, and the outer ring of the bearing can be configured as the second rotating part 152, so that the first rotating part 151 can rotate relative to the second rotating part 152.

[0054] Preferably, if Figure 4 and Figure 6 As shown, the driving module 16 of this embodiment includes a driving module 161, a driving plate 162 and a connecting member 163, wherein the driving plate 162 is sleeved on the sleeve 112 of the main shaft 11 and is threadedly matched with the 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 in rotation, and the driving module 161 is used to drive the sleeve 112 to rotate so that the driving plate 162 drives the movable plate 14 to move axially. Specifically, the main shaft 11 is rotatably equipped with a sleeve 112, and the sleeve 112 is rotatably equipped with a sleeve seat 113 configured to be fixedly installed, that is, the main shaft 11 can rotate relative to the sleeve 112, and the sleeve 112 can rotate relative to the sleeve seat 113, and the sleeve 112 is driven to rotate by the driving module 161. Furthermore, one end of the shaft sleeve 112 is rotatably assembled with the shaft sleeve seat 113, and the other end is sleeved with a driving plate 162 and is threadedly connected to the driving plate 162. The driving plate 162 is fixedly connected to the movable plate 14 through a connecting piece 163. The connecting piece 163 is formed as a column and can move along the axial direction of the main shaft 11 together with the driving plate 162 and the movable plate 14, but it is limited in rotation and cannot rotate around the shaft sleeve 112, so that the driving plate 162 and the movable plate 14 cannot rotate. Then, in the driving module 1 When the shaft sleeve 112 is driven by the drive module 161 to rotate, the drive plate 162 cannot rotate with the shaft sleeve 112, and the shaft sleeve 112 is limited by the drive module 161 and cannot move axially. Therefore, the drive plate 162 and the shaft sleeve 112 are equivalent to a screw nut and a screw structure. The drive plate 162 will move linearly along the axial direction of the main shaft 11 or the shaft sleeve 112 when the shaft sleeve 112 rotates. In this way, the drive plate 162 can drive the driven wheel 13 to move linearly along the axial direction through the connecting piece 163 and the movable plate 14.

[0055] Furthermore, the drive module 161 of this embodiment drives the sleeve 112 to rotate by means of the worm gear assembly, such as Figure 4 and Figure 6 As shown, 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 gear set includes a worm 1611 driven by the driving module 161 and a worm wheel 1612 fixedly connected to the shaft sleeve 112. The driving module 161 drives the shaft sleeve 112 to rotate through the worm 1611 and the worm wheel 1612 in turn. Preferably, an intermediate idler wheel 1613 is also arranged between the worm 1611 and the worm wheel 1612, so that the rotation direction of the worm wheel 1612 can be the same as the rotation direction of the worm 1611. This embodiment uses the worm gear set to transmit the transmission, so that the transmission is more accurate and stable, thereby making the speed regulation of the speed regulator more stable and accurate.

[0056] Furthermore, the speed regulator of this embodiment further comprises a housing 17 for accommodating a driving plate 162 and a connecting member 163. The connecting member 163 is assembled to the housing 17 by means of a linear bearing 172, and the housing 17 restricts the connecting member 163 from rotating around the shaft sleeve 112 and can only slide axially relative to the housing 17. Meanwhile, the shaft sleeve seat 113 is also fixedly assembled to the housing 17. Specifically, as Figure 7-8 As shown, a through hole 171 is formed on the housing 17, and the connecting member 163 passes through the housing 17 through the through hole 171, and a contact bearing 1631 is also provided between the connecting member 163 and the through hole 171, which can increase the contact area between the connecting member 163 and the housing 17, and play a certain protective role for the connecting member 163 and the housing 17. A linear bearing 172 fixed to the housing 17 is also provided between the driving plate 162 and the contact bearing 1631, which can reduce friction and facilitate the sliding of the connecting member 163 in the through hole 171 of the housing 17. Preferably, there are multiple connecting members 163, which are evenly spaced and arranged in the circumferential direction of the driving plate 162, and multiple through holes 171 corresponding to the connecting members 163 are formed in the housing 17, and the cooperation between the multiple connecting members 163 and the through holes 171 can better limit the rotation of the connecting member 163 around the shaft sleeve 112.

[0057] like Figure 4 and Figure 6 As shown, the main shaft 11 of this embodiment is rotatably assembled with the housing 17 by means of a rotating bearing 173. Specifically, there are two rotating bearings 173. The two rotating bearings 173 make the main shaft 11 rotate more smoothly, and a seal 174 is respectively provided on the outer side of the two rotating bearings 173 for realizing dynamic sealing and sealing protection of the worm gear set and the shaft sleeve 112.

[0058] It can be seen from the above content that the speed regulator provided in this embodiment can not only realize the active regulation of the transmission ratio, but also has smooth, accurate and reliable speed control, and at the same time has high speed regulation efficiency, which can effectively save electricity consumption.

[0059] Embodiment 2:

[0060] This embodiment provides a speed regulating device, such as Figure 9-11 As shown, the speed regulating device includes a driving wheel group, a transmission belt 3 and a driven wheel group 2, and the driving wheel group drives the driven wheel group 2 through the transmission belt 3, wherein the driving wheel group is the rotating wheel group 1 in the first embodiment, and the transmission belt 3 can be a belt or a metal belt.

[0061] Furthermore, the driven wheel set 2 of this embodiment is also a combined wheel set with adjustable travel distance. Specifically, Fig.12As shown, the driven wheel group 2 includes a first slave side wheel 22 and a second slave side wheel 23. The first slave side wheel 22 is fixed on the driven shaft 21, and the second slave side wheel 23 is slidably installed on the driven shaft 21 and can rotate with the driven shaft 21. One side of the second slave side wheel 23 is provided with an elastic member 24 for providing axial pressure to the second slave side wheel 23 toward the first slave side wheel 22. Specifically, the first slave side wheel 22 is fixed at the middle part of the driven shaft 21, the second slave side wheel 23 is arranged on one side of the first slave side wheel 22, and the second slave side wheel 23 is installed on the driven shaft 21 by means of a sliding sleeve 231, and can rotate with the driven shaft 21 and move along the axial direction of the driven shaft 21. A limit plate 27 fixed to the driven shaft 21 is provided on one side of the second slave side wheel 23, and the limit plate 27 and the second slave side wheel 23 rotate together with the driven shaft 21, and an elastic member 24 is also provided between the limit plate 27 and the second slave side wheel 2. The elastic member 24 is optional but not limited to a spring, which can provide axial pressure for the second slave side wheel 23 so as to press the transmission belt 3 with the first slave side wheel 22, so as to facilitate the driving wheel group to drive the driven wheel group 2 to rotate.

[0062] Preferably, the driven shaft 21 of this embodiment is connected to the central axis 26 of the wheel through a transmission assembly 25, thereby driving the wheel to rotate. The transmission assembly 25 may be, but is not limited to, a worm gear assembly.

[0063] From the above content, it can be seen that the speed regulation device provided in this embodiment can realize active regulation of the transmission ratio by driving the driven wheel group to rotate through the active wheel group, and the speed regulation control is smooth, accurate and reliable, and at the same time, the speed regulation efficiency is high, which can effectively save electricity consumption.

[0064] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A speed regulator, comprising a rotating wheel set (1), wherein the rotating wheel set (1) comprises a fixed wheel (12) fixed to a main shaft (11) and a moving wheel (13) freely sliding along the axial direction of the main shaft (11), wherein the moving wheel (13) and the fixed wheel (12) constitute a combined wheel set with adjustable travel spacing, characterized in that: The speed regulator comprises a movable plate (14) connected to the moving wheel (13) and a driving module (16) driving the moving plate (14) to move axially, wherein the driving module (16) drives the moving wheel (13) to move axially by means of the moving plate (14) to adjust the walking distance; the moving wheel (13) is mounted on the main shaft (11) by means of a spline structure, and the moving wheel (13) rotates along with the main shaft (11) and can slide freely along the axial direction of the main shaft (11); the moving wheel (13) is connected to the movable plate (14) via a rotating body (15), and the rotating body (15) comprises a first rotating part (151) fixedly connected to the moving wheel (13) and a second rotating part (152) fixedly connected to the moving plate (14), and the first rotating part (151) and the second rotating part (152) rotate relative to each other; The driving module (16) comprises: a driving plate (162), wherein the driving plate (162) is sleeved on the shaft sleeve (112) of the main shaft (11) and is threadedly matched with the shaft sleeve (112), wherein the main shaft (11) and the shaft sleeve (112) are rotatably assembled, and the driving plate (162) is fixedly connected to the movable plate (14) via a connecting piece (163), wherein the connecting piece (163) can move in the axial direction but is restricted in rotation; and a driving module (161), wherein the driving module (161) is used to drive the shaft sleeve (112) to rotate so that the driving plate (162) drives the movable plate (14) to move in the axial direction; and the travel distance between the moving wheel (13) and the fixed wheel (12) is controlled by the movable plate (14) and the driving module (16), thereby converting passive speed regulation into active speed regulation, and adjusting the transmission ratio according to needs at any time.

2. The speed regulator according to claim 1, characterized in that: The driving module (161) drives the shaft sleeve (112) to rotate by means of a worm gear group, wherein the worm gear group comprises 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) drives the shaft sleeve (112) to rotate via the worm (1611) and the worm wheel (1612) in sequence.

3. The speed regulator according to claim 1, characterized in that: The speed regulator further comprises a housing (17) accommodating the driving plate (162) and a connecting member (163); the connecting member (163) is a column penetrating the housing (17); and the column is capable of sliding relative to the housing (17).

4. The speed regulator according to claim 3, characterized in that: There are a plurality of columns, and the housing (17) is formed with a plurality of through holes (171). The columns are assembled in the through holes (171) by means of linear bearings (172).

5. A speed regulating device, characterized in that: include: According to the speed regulator as described in any one of claims 1 to 4, the rotating wheel group is configured as a driving wheel group, and the driving wheel group drives the driven wheel group (2) through a transmission belt (3); the driven wheel group (2), the driven wheel group (2) is also a combined wheel group with adjustable walking distance.

6. The speed regulating device according to claim 5, characterized in that: The driven wheel group (2) comprises a first driven side wheel (22) and a second driven side wheel (23), wherein the first driven side wheel (22) is fixed on a driven shaft (21), and the second driven side wheel (23) is slidably mounted on the driven shaft (21) and can rotate along with the driven shaft (21), and an elastic member (24) is provided on one side of the second driven side wheel (23) for providing the second driven side wheel (23) with axial pressure toward the first driven side wheel (22).

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