CN113500883A - Variable width wheel - Google Patents
Variable width wheel Download PDFInfo
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- CN113500883A CN113500883A CN202110845300.XA CN202110845300A CN113500883A CN 113500883 A CN113500883 A CN 113500883A CN 202110845300 A CN202110845300 A CN 202110845300A CN 113500883 A CN113500883 A CN 113500883A
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- 238000005096 rolling process Methods 0.000 claims description 7
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C19/00—Tyre parts or constructions not otherwise provided for
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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Abstract
The invention discloses a variable width wheel, comprising: a center wheel body; the expanding wheel body and the central wheel body are arranged in parallel along the extension direction of the central axis, have the same wheel surface outer diameter and are in sliding connection with the central wheel body along the extension direction of the central axis; and the transmission driving mechanism is used for driving the expansion wheel body to slide along the central axis relative to the central wheel body. When the central wheel body and the expanding wheel body move away from each other, the distance between the expanding wheel body and the central wheel body is increased, at the moment, the width-variable wheel is in a widened state, and when the expanding wheel body and the central wheel body move close to each other, the distance between the expanding wheel body and the central wheel body is reduced, at the moment, the width-variable wheel is in a narrowed state, and therefore width adjustment of the wheel is achieved. The width-variable wheel can effectively solve the problem that the width of the wheel cannot be adjusted.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a width-variable wheel.
Background
The problems of poor safety, poor adaptability to variable and complex road conditions, large tire loss, incapability of adjusting the width of the tire and the like of a vehicle mainly comprising a fixed rubber tire are solved.
In summary, how to effectively solve the problem that the width of the wheel cannot be adjusted is a problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a variable width wheel, which can effectively solve the problem that the width of the wheel cannot be adjusted.
In order to achieve the purpose, the invention provides the following technical scheme:
a variable width wheel comprising:
a center wheel body;
the expanding wheel body and the central wheel body are arranged in parallel along the extension direction of the central axis, have the same wheel surface outer diameter and are in sliding connection with the central wheel body along the extension direction of the central axis;
and the transmission driving mechanism is used for driving the expansion wheel body to slide along the central axis relative to the central wheel body.
In the variable width wheel, the center wheel body and the expanding wheel body are arranged in parallel, and the expanding wheel body and the center wheel body are connected in a sliding mode along the extending direction of the central axis. When the central wheel body and the expanding wheel body move away from each other, the distance between the expanding wheel body and the central wheel body is increased, at the moment, the width-variable wheel is in a widened state, and when the expanding wheel body and the central wheel body move close to each other, the distance between the expanding wheel body and the central wheel body is reduced, at the moment, the width-variable wheel is in a narrowed state, and therefore width adjustment of the wheel is achieved. In summary, the width-variable wheel can effectively solve the problem that the width of the wheel cannot be adjusted.
Preferably, the expanding wheel body is provided on both sides of the center wheel body in the central axis direction.
Preferably, the center wheel body is uniformly provided with a plurality of radial protrusion supporting portions in the circumferential direction, one side of the expansion wheel body, which is close to the center wheel body, is provided with a plurality of slide rod portions, and each slide rod portion is in sliding fit with each radial protrusion supporting portion.
Preferably, radial protruding supporting part includes the root post portion that radial outside cross section reduces gradually and is located root post portion outer end just follows the horizontal pole portion that the central axis extending direction extends, the radial lateral surface of horizontal pole portion is the convex surface, the both sides of horizontal pole portion respectively with both sides on the extension wheel body slide bar portion sliding connection.
Preferably, the cover plate portion is arranged on the outer side of the transverse rod portion, sliding protrusions are arranged on two sides of the portion, located on the inner side of the cover plate portion, of the transverse rod portion, sliding grooves matched with the sliding protrusions are formed in one sides, corresponding to the sliding rod portions, of the sliding rod portions, reinforcing convex strips are arranged on one sides, away from the sliding grooves, reinforcing blocks are arranged between the root portions of the sliding rod portions and the body of the expansion wheel body, the reinforcing blocks are provided with lightening holes, and the cross sections of the sliding rod portions are gradually reduced from the root portions to the front ends.
Preferably, the transmission driving mechanism comprises a rotation cylinder, the rotation cylinder is in threaded connection with the expansion wheel body through a thread with an axis consistent with the central axis, and the rotation cylinder is in rotational connection with the central wheel body around the central axis.
Preferably, the transmission driving mechanism further comprises a central cylinder, the central cylinder is rotatably connected with the central wheel body around the central axis, the central cylinder is provided with an external tooth part, the central wheel body is provided with an internal tooth part, a meshed planetary gear is arranged between the external tooth part and the internal tooth part, and one end shaft part of the planetary gear is connected with the hole part of the rotating cylinder so as to push the rotating cylinder to rotate.
Preferably, the rotating cylinder includes a cylindrical portion and a disk portion connected to an end of the cylindrical portion close to the sun gear body, the cylindrical portion has an external thread to be connected to an internal thread on the expander gear body, the disk portion has a hole portion fitted to an end shaft portion of the planetary gear, and a reinforcing rib is provided between the disk portion and the cylindrical portion.
Preferably, the radial outer side of the central cylinder is provided with a clamping groove to be clamped on the inner ring of the central wheel body, the groove wall of the clamping groove is in matched contact with the inner ring through an annular raised line and an annular groove which extend axially, and the central cylinder is fixedly connected with a transmission rod which extends along the central axis.
Preferably, the rotating cylinder has an installation cylinder portion extending into the central wheel body, a bearing is arranged between the installation cylinder portion and the central wheel body to realize rotating connection, and a locking ring is further arranged at the rotating cylinder to prevent the rotating cylinder from separating from the central wheel body along the central axis direction.
Preferably, the control device is capable of acquiring a slip ratio of the vehicle running according to a speed difference between a rolling speed of the wheel and a translation speed of the wheel, and when the slip ratio is higher than a first predetermined value, the control device controls the built-in motor to rotate so as to move the expanding wheel body in a direction away from the central wheel body, and when the slip ratio is lower than a second predetermined value, the control device controls the built-in motor to rotate so as to move the expanding wheel body in a direction close to the central wheel body.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a variable-width wheel provided in an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the expanding wheel body A-A shown in FIG. 1;
FIG. 3 is an exploded view of an embodiment of the expandable wheel body of the present invention;
FIG. 4 is a schematic illustration of a planetary gear set according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of an expanding wheel body according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a center wheel body according to an embodiment of the present invention.
The drawings are numbered as follows:
the planetary gear transmission mechanism comprises a central gear body 1, an expanding gear body 2, a rotating cylinder 3, a central cylinder 4, a planetary gear 5, a transmission rod 6, a bearing 7, a locking ring 8, a radial protrusion supporting part 11, a root column part 111, a cross rod part 112, an internal tooth part 12, a sliding rod part 21, a mounting cylinder part 31 and an external tooth part 41.
Detailed Description
The embodiment of the invention discloses a width-variable wheel, which can effectively solve the problem that the width of the wheel cannot be adjusted.
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. 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.
Referring to fig. 1 to 6, fig. 1 is a schematic structural diagram of a variable-width wheel according to an embodiment of the present invention; FIG. 2 is a schematic cross-sectional view of the expanding wheel body AA in FIG. 1; FIG. 3 is an exploded view of an embodiment of the expandable wheel body of the present invention; FIG. 4 is a schematic illustration of a planetary gear set according to an embodiment of the present invention; FIG. 5 is a schematic structural view of an expanding wheel body according to an embodiment of the present invention; fig. 6 is a schematic structural view of a center wheel body according to an embodiment of the present invention.
In one embodiment, the present embodiment provides a variable-width wheel, which specifically includes a center wheel body 1, an expanding wheel body 2, and a transmission drive mechanism.
The expanding wheel body 2 and the central wheel body 1 are arranged in parallel along the extending direction of the central axis, the wheel surface outer diameters are equal, and the expanding wheel body 2 and the central wheel body 1 are connected in a sliding manner along the extending direction of the central axis. It should be noted that, the central axis refers to a rotation axis of the wheel which can be widened, that is, the wheel which can be widened rolls when rotating around the central axis.
The expanding wheel body 2 and the central wheel body 1 are arranged in parallel along the central axis direction, and when the expanding wheel body 2 and the central wheel body 1 move away from each other, the distance between the expanding wheel body 2 and the central wheel body 1 is increased, at the moment, the width-variable wheel is in a widened state, and when the expanding wheel body 2 and the central wheel body 1 move close to each other, the distance between the expanding wheel body and the central wheel body is reduced, at the moment, the width-variable wheel is in a narrowed state.
It should be noted that the central wheel body 1 may be provided with the expanding wheel body 2 only on one side, or may be provided with the expanding wheel bodies 2 on both sides. If the two sides are provided with the above-mentioned expanding wheel bodies 2, the connecting modes between the expanding wheel bodies 2 on the two sides and the transmission driving mechanism and the central wheel body 1 can be completely the same or different. The transmission driving mechanism can synchronously drive the two side expanding wheel bodies 2 to move far away from the central wheel body 1 so as to widen, or drive the two side expanding wheel bodies 2 to move close to the central wheel body 1 so as to narrow. Of course, the transmission driving mechanism can separately drive the two side expanding wheel bodies 2 to move compared with the central wheel body 1, so that the two side expanding wheel bodies 2 can move without interference.
The wheel surface of the expanding wheel body 2 is equal to the wheel surface of the central wheel body 1 in external diameter, and can be approximately equal to or completely equal to each other, so that the wheel surface of the expanding wheel body 2 and the wheel surface of the central wheel body 1 jointly form a wheel surface, and when the wheel surface of the expanding wheel body 2 is in contact with the ground, the wheel surface of the central wheel body 1 and the wheel surface of the expanding wheel body 2 are in contact with the ground, and both can form supporting force.
The expanding wheel body 2 and the central wheel body 1 are slidably connected along the extending direction of the central axis, so that the position relationship between the expanding wheel body 2 and the central wheel body 1 is restricted through the sliding connection, and the expanding wheel body and the central wheel body can only slide along the central axis, as described above, so as to adjust the wheel width. And the expanding wheel 2 and said central wheel 1 should also be able to transmit torque through this sliding connection.
The sliding connection can be realized through a sliding rail, and can also be realized through a sliding hole and a sliding rod. For facilitating the force transmission, it is preferable that the center wheel body 1 is provided with a plurality of radial raised supporting portions 11 uniformly in the circumferential direction, and one side of the expanding wheel body 2 close to the center wheel body 1 is provided with a plurality of sliding rod portions 21, and each sliding rod portion 21 is in sliding fit with each radial raised supporting portion 11.
The radial raised supporting portion 11 is a supporting portion of the central wheel body 1, that is, when rolling, the radial raised supporting portion 11 is the portion closest to the ground, and even directly contacts with the ground. It should be noted that, in order to make the radial protrusion support portion 11 have a better support effect, the more the radial protrusion support portions 11 are arranged in the circumferential direction, the better the overall circumferential effect is.
Further, in order to achieve a better supporting effect, the radial protrusion supporting portion 11 includes a root portion 111 whose radial outward cross section is gradually reduced and a cross rod portion 112 located at an outer end of the root portion 111 and extending along the extending direction of the central axis, so as to achieve a better supporting effect through the root portion 111, and reduce the middle space, so that other structures can be more conveniently mounted.
Specifically, the radial outer side surface of the crossbar portion 112 may be a convex surface, so as to achieve a better supporting effect. When the above-mentioned extension wheel bodies 2 are arranged on both sides of the central wheel body 1, both sides of the cross rod portion 112 are slidably connected with the slide rod portions 21 of the extension wheel bodies 2 on both sides, respectively, so that the extension wheel bodies 2 on both sides are installed in a staggered manner, and a better installation and matching effect is achieved, thereby realizing a staggered sliding fit.
The outside of the crossbar 112 is a cover plate, and the outside surface of the cover plate is preferably the convex surface. The two sides of the part of the cross rod part 112 located inside the cover plate part are provided with sliding projections, and the corresponding side of the sliding rod part 21 is provided with a sliding groove matched with the sliding projections to realize sliding connection. The slide bar part 21 is provided with a reinforcing convex strip at one side far away from the slide groove, a reinforcing block is arranged between the root part of the slide bar part 21 and the body of the expanding wheel body 2, the reinforcing block is provided with a lightening hole, and the cross section of the slide bar part is gradually reduced from the root part to the front end.
The transmission driving mechanism is used for driving the expansion wheel body 2 to slide along the central axis relative to the central wheel body 1. The expanding wheel body 2 can be a power source structure such as a motor and the like, and can also be a simple transmission mechanism to mainly convert rotation into linear driving so as to drive the expanding wheel body 2 to slide along the central axis relative to the central wheel body 1.
Further, the transmission driving mechanism may include a rotation cylinder 3, the rotation cylinder 3 and the extension wheel body 2 are connected by a screw thread having an axis coincident with the central axis, and the rotation cylinder 3 and the central wheel body 1 are rotatably connected around the central axis. So that a screw nut transmission mechanism is formed among the rotating cylinder 3, the central wheel body 1 and the expanding wheel body 2, that is, when the rotating cylinder 3 rotates relative to the central wheel body 1, because the expanding wheel body 2 is connected with the central wheel body 1 in a sliding manner to limit relative rotation, under the screw-thread fit, the rotating cylinder 3 moves spirally relative to the expanding wheel body 2, so that the expanding wheel body 2 and the central wheel body 1 slide along the central axis.
Further, it is preferable that the transmission driving mechanism further includes a central cylinder 4, the central cylinder 4 is rotatably connected to the central wheel body 1 around the central axis, the central cylinder 4 has an external tooth portion 41, the central wheel body 1 has an internal tooth portion 12, wherein the internal tooth portion 12 is disposed on the external tooth portion 41 and coaxially disposed therebetween, a planetary gear 5 engaged with the external tooth portion 41 and the internal tooth portion 12 is disposed between the external tooth portion 41 and the internal tooth portion 12, the planetary gear 5 is respectively engaged with the internal tooth portion 12 and the external tooth portion 41 to jointly form a planetary gear set, so that when the central cylinder 4 rotates, the external tooth portion 41 rotates relative to the internal tooth portion 12, and because of the engagement relationship between the planetary gear 5 and the internal tooth portion 12 and the external tooth portion 41, the planetary gear 5 rolls relative to the internal tooth portion 12 at this time, that is, the axis thereof rotates around the axis of the central wheel body 1. And the shaft part of one end of the planetary gear 5 is connected with the hole part of the rotating cylinder 3 so as to push the rotating cylinder 3 to rotate around the central axis, further push the expanding wheel 2 to slide along the central axis, and the shaft part of the other end is matched with the annular groove on the central wheel body 1. It should be noted that one or more planetary gears 5, typically three planetary gears 5, may be disposed between the internal tooth portion 12 and the external tooth portion 41.
Wherein, the external tooth part 41 is connected with the body of the central cylinder 4 through a bolt, and can be detached from the body of the central cylinder 4 to form an independent sun gear. During assembly, the body of the central cylinder 4, i.e. a transmission cylinder, is inserted into the circular hole of the central wheel body 1, and the external teeth 41 are in contact fit with the transmission cylinder from the other side and are fastened by bolts, so that the central cylinder 4 can rotate relative to the axis of the central wheel body 1.
The rotating cylinder 3 comprises a cylindrical part and a disk part connected to one end of the cylindrical part close to the central wheel body, the cylindrical part is provided with an external thread to be connected with an internal thread on the expanding wheel body 2, the disk part is provided with a hole part matched with the shaft part at one end of the planetary gear 5, and a reinforcing rib is arranged between the disk part and the cylindrical part.
Wherein the radial outside of the central cylinder 4 is provided with a clamping groove to be clamped on the inner ring of the central wheel body 1, the groove wall of the clamping groove is in matched contact with the inner ring through an annular raised line and an annular groove which extend axially, the groove walls on two sides of the general clamping groove are provided with the annular raised lines, and the inner ring is provided with the annular groove. The central cylinder 4 is fixedly connected to a transmission rod 6 extending along said central axis. The radial protrusion support portions 11 are provided on an inner ring having rotary cylinders 3 on both sides in the direction of the central axis to be screwed with the expansion wheel bodies 2 on both sides.
The rotating cylinder 3 is provided with an installation cylinder part 31, a bearing 7 is arranged between the installation cylinder part 31 and the central wheel body 1 to realize rotating connection, for convenience of installation, an installation groove for placing the bearing 7 is preferably arranged on the side surface of the central wheel body 1, the installation cylinder part 31 extends into the installation groove of the central wheel body 1, the outer ring of the bearing 7 is in matched contact with the outer side groove wall of the installation groove, and the inner ring is in matched contact with the outer wall of the installation cylinder part 31. The rotating cylinder 3 is further provided with a locking ring 8 to prevent the rotating cylinder 3 from separating from the central wheel body 1 along the central axis direction, so that the rotating cylinder 3 can only rotate around the axis relative to the central wheel body 1.
During installation, the bearing 7, the rotating cylinder 3 and the center wheel body 1 are installed, namely the bearing 7 is installed in the installation groove of the center wheel body 1, then the rotating cylinder 3 is installed, and finally the locking ring 8 is installed for limiting. Specifically, can make installation section of thick bamboo portion 31 lateral surface, bearing 7 lateral surface, the corresponding side of central wheel body 1 align at the mounting groove notch to be located the coplanar, and the lock collar laminating in this plane, with the installation section of thick bamboo portion 31 outer end, the bearing 7 outside and the corresponding side of central wheel body 1 offset, and lock collar 8 passes through bolted connection with central wheel body 1, and then carries on spacingly to rotating cylinder 3 and bearing 7.
Furthermore, it is preferred here to include control means and an internal motor for driving the central cylinder 4 in rotation relative to the central wheel 1, wherein the internal motor mount is mainly mounted on the hub of the automobile or on the central wheel 1, and the spindle 1 of the internal motor is in driving connection with the central cylinder 4, for example via the above-mentioned drive rod 6. The central wheel body 1 is generally fixedly connected with an automobile hub, and at the moment, the built-in motor base is mainly installed on the automobile hub or the central wheel body 1; if the central cylinder 4 is fixed relative to the hub of the automobile, the built-in motor base should be mounted on the central wheel body 1. Specifically, the installation mode can be set according to actual needs.
The control device can acquire the slip rate of the running vehicle according to the speed difference between the rolling speed and the translation speed of the wheels; when the slip ratio is higher than a first preset value, controlling the built-in motor to rotate so as to enable the extension wheel body to move towards the direction far away from the central wheel body until the slip ratio meets the requirement; and when the slip ratio is lower than a second preset value, controlling the built-in motor to rotate so as to enable the extension wheel body to move towards the direction close to the central wheel body until the slip ratio meets the requirement. Wherein the second predetermined value is lower than the first predetermined value. So as to adjust the width of the wheel according to the slip rate.
When the vehicle runs on different road surfaces, the wheel slip rate is different, for example, on a structured road surface, the slip rate is smaller, and on an unstructured road surface, the slip rate is higher, so that the road surface condition on which the wheel runs can be determined according to the change of the slip rate, and the wheel can be adjusted to be wider or narrower.
At the same time, the slip ratio will also vary at different speeds: under the high-speed road condition of traveling, the vehicle speed of traveling is higher, and the wheel slip rate is lower, and the wheel can narrow, simultaneously, because the high-speed traveling of car, for guaranteeing the stability in the driving process, can make the wheel widen slightly.
Under the low-speed road condition of driving, the vehicle speed of driving is lower, and the wheel slip rate is higher, and reduces the extra unnecessary loss that brings because friction loss, makes the vehicle acceleration process comparatively light simultaneously, and the wheel can narrow.
The rolling speed of the wheels refers to the running speed of the wheel surfaces of the wheels when rotating, and can be obtained through a wheel speed sensor; the wheel translation speed refers to the speed of the axis of the wheel translating relative to the ground during running, the strain gauge torque sensor placed on the transmission shaft is used for detecting the deformation of the transmission shaft so as to obtain the driving force, and the driving force is further obtained through calculation of the driving force.
The specific calculation method is as follows: the wheel speed sensor is placed on the drive axle housing for monitoring the wheel speed, and the strain gauge torque sensor is placed on the drive shaft. According to the wheel speed measured by the wheel speed sensor, using the formula: the wheel rotating speed is equal to the running speed/the tire circumference, then the wheel rotating speed is obtained according to a wheel speed formula by v equal to 2 pi nr, n is the wheel rotating speed, r is the wheel radius, and the wheel rolling speed is obtained; the strain gauge torque sensor can measure the torque through the deformation of the transmission shaft, and according to a formula: the driving force (torque) gearbox tooth ratio final gear wall mechanical efficiency)/tire radius, where x represents the multiplication of the two to obtain the driving force experienced by the vehicle. According to the driving force diagram, the actual running speed of the automobile, namely the wheel translation speed can be obtained. And averaging the two running speeds measured by the rotating speed sensor and the strain gauge torque sensor to obtain the average running speed of the vehicle. According to the formula of the slip rate, the slip rate is (actual driving speed-wheel rolling speed)/actual driving speed, and the magnitude of the slip rate under the current driving road condition can be obtained.
According to the above-described calculation structure, the control device includes the processing steps of:
and transmitting the obtained slip ratio to a control device, wherein the optimal slip ratio range when the vehicle runs is as follows: 10% -30%, the control device compares the measured slip ratio with the optimal slip ratio and outputs a signal:
if the measured slip ratio is greater than the optimal slip ratio, the control device judges that the vehicle runs on the unstructured road surface at the moment, and accordingly outputs signals to control the built-in motor of the wheel hub to rotate, so that the wheel can perform widening action. Specifically, the built-in motor rotates in the forward direction, and then drives the central cylinder 4 to rotate relative to the central wheel body 1, so as to drive the rotating cylinder 3 to rotate through the planetary gear 5, and then drive the expanding wheel body 2 to slide in the direction away from the central wheel body 1, and the wheel becomes wider.
If the measured slip rate is smaller than the optimal slip rate, the central processing unit judges that the vehicle runs on the structured road surface at the moment, so that the output signal controls the rotation of the built-in motor of the wheel hub to enable the wheel to perform the narrowing action. Specifically, the built-in motor rotates in the reverse direction, and then drives the central cylinder 4 to rotate relative to the central wheel body 1, so as to drive the rotating cylinder 3 to rotate through the planetary gear 5, and then drive the expanding wheel body 2 to slide in the direction close to the central wheel body 1, and the wheel becomes narrow.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A variable width wheel, comprising:
a center wheel body;
the expanding wheel body and the central wheel body are arranged in parallel along the extension direction of the central axis, have the same wheel surface outer diameter and are in sliding connection with the central wheel body along the extension direction of the central axis;
and the transmission driving mechanism is used for driving the expansion wheel body to slide along the central axis relative to the central wheel body.
2. The variable width wheel of claim 1, wherein the center wheel body is provided with the expanded wheel body on both sides in the center axis direction.
3. The variable width wheel of claim 2, wherein the center wheel body is provided with a plurality of radially protruding support portions uniformly in the circumferential direction, and a side of the expander wheel body adjacent to the center wheel body is provided with a plurality of slide rod portions, each slide rod portion being in sliding engagement with each radially protruding support portion.
4. The variable-width wheel according to claim 3, wherein the radial protrusion supporting portion comprises a root column portion with a gradually decreasing radial outward cross section and a cross rod portion located at an outer end of the root column portion and extending along the extending direction of the central axis, a radial outer side surface of the cross rod portion is a convex surface, and two sides of the cross rod portion are slidably connected with the sliding rod portions on the expanding wheel bodies on two sides respectively.
5. The variable-width wheel according to claim 4, wherein the outer side of the cross rod is a cover plate, sliding protrusions are arranged on two sides of the portion, located on the inner side of the cover plate, of the cross rod, sliding grooves matched with the sliding protrusions are arranged on one corresponding side of the cross rod, the cross rod is provided with reinforcing convex strips on one side away from the sliding grooves, reinforcing blocks are arranged between the root portion of the cross rod and the body of the expanding wheel body, the reinforcing blocks are provided with lightening holes, and the cross section of the cross rod is gradually reduced from the root portion to the front end.
6. The variable width wheel of any of claims 1-5, wherein the transmission drive mechanism comprises a rotating cylinder, the rotating cylinder being threadedly connected to the expander body with an axis coincident with the central axis, and the rotating cylinder being rotatably connected to the central body about the central axis.
7. The variable width wheel of claim 6, wherein the transmission drive mechanism further comprises a central cylinder, the central cylinder is rotatably connected with the central wheel body around the central axis, the central cylinder is provided with an external tooth part, the central wheel body is provided with an internal tooth part, a planetary gear meshed with the external tooth part and the internal tooth part is arranged between the external tooth part and the internal tooth part, and one end shaft part of the planetary gear is connected with the hole part of the rotating cylinder so as to push the rotating cylinder to rotate.
8. The variable width wheel of claim 7, wherein the rotating cylinder includes a cylindrical portion having an external thread to be coupled to an internal thread on the expander body, and a disc portion coupled to an end of the cylindrical portion adjacent to the center wheel body, the disc portion having a hole portion to be fitted to an end shaft portion of the planetary gear, a rib being provided between the disc portion and the cylindrical portion.
9. The variable width wheel of claim 8, wherein the center cylinder has a locking groove at the radial outer side for locking on the inner ring of the center wheel body, and the locking groove wall is in matching contact with the inner ring through an annular rib and an annular groove extending axially, and the center cylinder is fixedly connected with a transmission rod extending along the central axis; the rotating cylinder is provided with an installation cylinder part extending into the central wheel body, a bearing is arranged between the installation cylinder part and the central wheel body to realize rotating connection, and a locking ring is further arranged at the rotating cylinder to prevent the rotating cylinder from separating from the central wheel body along the direction of the central axis.
10. The variable width wheel of claim 9, comprising a control device and an internal motor for driving the center cylinder to rotate relative to the center wheel body, wherein the control device is capable of acquiring a slip ratio of a vehicle traveling according to a speed difference between a wheel rolling speed and a wheel translation speed, and when the slip ratio is higher than a first predetermined value, the internal motor is controlled to rotate to move the expanding wheel body in a direction away from the center wheel body, and when the slip ratio is lower than a second predetermined value, the internal motor is controlled to rotate to move the expanding wheel body in a direction closer to the center wheel body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110845300.XA CN113500883B (en) | 2021-07-26 | 2021-07-26 | Variable width wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110845300.XA CN113500883B (en) | 2021-07-26 | 2021-07-26 | Variable width wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113500883A true CN113500883A (en) | 2021-10-15 |
| CN113500883B CN113500883B (en) | 2022-08-26 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008065407A1 (en) * | 2006-11-29 | 2008-06-05 | Royal College Of Art | Vehicle wheel |
| EP1958793A1 (en) * | 2006-12-01 | 2008-08-20 | The Royal College of Art | Vehicle wheel |
| KR20160041116A (en) * | 2014-10-06 | 2016-04-18 | 현대자동차주식회사 | Variable tire |
| CN111216490A (en) * | 2020-02-28 | 2020-06-02 | 山东大学 | Wheel structure and vehicle with adjustable width and rigidity |
| CN111634154A (en) * | 2020-07-06 | 2020-09-08 | 山东科技大学 | Wheel with variable diameter and variable wheel surface shape |
| CN211493526U (en) * | 2019-12-23 | 2020-09-15 | 北京电子科技职业学院 | Width-adjustable deformable wheel and deformable vehicle |
| CN111845193A (en) * | 2020-07-08 | 2020-10-30 | 广州大学 | Large-width deformation ratio wheel type paper folding principle robot |
-
2021
- 2021-07-26 CN CN202110845300.XA patent/CN113500883B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008065407A1 (en) * | 2006-11-29 | 2008-06-05 | Royal College Of Art | Vehicle wheel |
| EP1958793A1 (en) * | 2006-12-01 | 2008-08-20 | The Royal College of Art | Vehicle wheel |
| KR20160041116A (en) * | 2014-10-06 | 2016-04-18 | 현대자동차주식회사 | Variable tire |
| CN211493526U (en) * | 2019-12-23 | 2020-09-15 | 北京电子科技职业学院 | Width-adjustable deformable wheel and deformable vehicle |
| CN111216490A (en) * | 2020-02-28 | 2020-06-02 | 山东大学 | Wheel structure and vehicle with adjustable width and rigidity |
| CN111634154A (en) * | 2020-07-06 | 2020-09-08 | 山东科技大学 | Wheel with variable diameter and variable wheel surface shape |
| CN111845193A (en) * | 2020-07-08 | 2020-10-30 | 广州大学 | Large-width deformation ratio wheel type paper folding principle robot |
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| CN113500883B (en) | 2022-08-26 |
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Application publication date: 20211015 Assignee: CHONGQING LOTUSSMART INTELLIGENT TECHNOLOGY CO.,LTD. Assignor: SOUTHWEST University Contract record no.: X2024980009904 Denomination of invention: A variable width wheel Granted publication date: 20220826 License type: Common License Record date: 20240722 |
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Application publication date: 20211015 Assignee: Chongqing Central Asia Huitong Technology Co.,Ltd. Assignor: SOUTHWEST University Contract record no.: X2024980010599 Denomination of invention: A variable width wheel Granted publication date: 20220826 License type: Common License Record date: 20240726 |
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