CN109178143A - A kind of non-contact wheel of ball-type magnetic suspension and the trolley using the wheel - Google Patents
A kind of non-contact wheel of ball-type magnetic suspension and the trolley using the wheel Download PDFInfo
- Publication number
- CN109178143A CN109178143A CN201810975832.3A CN201810975832A CN109178143A CN 109178143 A CN109178143 A CN 109178143A CN 201810975832 A CN201810975832 A CN 201810975832A CN 109178143 A CN109178143 A CN 109178143A
- Authority
- CN
- China
- Prior art keywords
- wheel
- ball
- levitation device
- vehicle body
- trolley
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D63/00—Motor vehicles or trailers not otherwise provided for
- B62D63/02—Motor vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B19/00—Wheels not otherwise provided for or having characteristics specified in one of the subgroups of this group
- B60B19/14—Ball-type wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D63/00—Motor vehicles or trailers not otherwise provided for
- B62D63/02—Motor vehicles
- B62D63/04—Component parts or accessories
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for
Abstract
The present invention provides a kind of non-contact wheel of ball-type magnetic suspension and using the trolley of the wheel, belong to the technical field of electromagnetic equipment.A kind of non-contact wheel of ball-type magnetic suspension includes the wheel and hollow levitation device of ball-type, and wheel is set to the hollow interior of levitation device, and levitation device is connect with vehicle body, and the two tool has magnetisable material；The present invention is by forming arrangement of repelling each other for magnetic on magnetic field on wheel and levitation device, so that levitation device is suspended on wheel, the contactless connection of wheel is realized, it is therefore prevented that mechanical wear and operation vibration problems, and universal can turn to, improve controllability and flexibility；And it provides using the plane driving device of carrying magnetic structure and the AC coil effect of vehicle body, the wireless control system signal connection of the wireless drive control system of vehicle body and wheel and the trolley for adding three kinds of driving methods that the driving wheel that band drives is driven, it prevents trolley to turn to Caton problem, improves the controllability and flexibility of trolley.
Description
Technical field
The present invention relates to the technical field of electromagnetic equipment, it is specifically related to a kind of non-contact wheel of ball-type magnetic suspension and use
The trolley of the wheel.
Background technique
Trolley is widely used as vehicle-carried, and the research for trolley is always emphasis concerned by people.
Traditional, trolley includes vehicle body and wheel, and the chassis of vehicle body and the oblate cylindricality wheel hub of wheel belong to coupling of shaft system,
And by rigid gear mechanism driving, there is limitation, can not accomplish transverse shifting etc., and its turn in the direction of traffic for resulting in trolley
It is then generally adjusted to control by differential mechanism, results in it when turning to there are minimum turning radius, can not accomplish that 360 ° of original place turns
Dynamic to wait movement, limitation is big, bad adaptability；And due to being coupling of shaft system between chassis and wheel, result in this contact
There is the problem for being prone to wear out, and shaking larger in mechanical structure, not only the wasting of resources is big, but also a usage experience is poor.
Summary of the invention
For the above-mentioned problems in the prior art, it is now intended to provide a kind of non-contact wheel of ball-type magnetic suspension and use
The trolley of the wheel the wheel of ball-type is arranged, and covers at the levitation device on wheel, and sets in the outer surface of wheel
Magnetisable material is set, meanwhile, it is again provided with opposite magnetisable material on the inner surface of levitation device, generates mutual expelling force, will hang
Floating device is suspended on wheel, so that the support and rotation of wheel are realized, so that wheel and the vehicle body connecting with levitation device
Between be contactless connection, avoid mechanical wear and shake larger problem, resource utilization is higher, and experience effect is more
It is good, meanwhile, wheel can universal rotational, to improve the manipulation flexibility and mobility of trolley, realize transverse shifting and
Compound actions, the adaptability such as 360 ° of rotations are higher；And it uses to be arranged in vehicle body using the trolley of this car wheel structure and hand over
Streamline circle, and it is provided with the plane driving device of permanent magnet in surface, by changing the current strength in AC coil,
Realize the purpose of control trolley movement, it is simple to operate, and act multiplicity；Can also using car wheel structure as driven wheel, and in
Driving wheel of the vehicle bottom setting with driving of trolley, provides power by driving wheel, and driven wheel turns to, and prevents from turning to asking for Caton
Topic, equally can complete various compound actions, improve the flexibility and mobility of trolley, and settable wireless drive in trolley vehicle body
Autocontrol system, with wheel built in wireless control system connect, realize the control to wheel, equally improve the manipulation of trolley
Flexibility and mobility, practicability are higher.
Specific technical solution is as follows:
A kind of non-contact wheel of ball-type magnetic suspension, has the feature that, comprising: wheel and levitation device, wheel are in ball
Type setting, levitation device are arranged in hollow ball-type, and wheel is set to the hollow interior of levitation device and is provided between the two
Gap, the lower part of levitation device offer a through-hole, and a part of spherical surface of wheel is projecting inward from through-hole, on the outer surface of wheel
It is even to be covered with magnetisable material or uniform segmentation is disposed with several magnetisable materials, uniformly it is covered with magnetisable material on the inner surface of levitation device
Or uniform segmentation is disposed with several magnetisable materials, and the polarity of the magnetic field of method phase that is formed of magnetisable material on the outer surface of wheel with
The mutually outside polarity of the magnetic field of the method that magnetisable material on the inner surface of levitation device is formed is identical.
Above-mentioned a kind of non-contact wheel of ball-type magnetic suspension, wherein the top of the outer surface of levitation device is provided with connection
Block, link block are coaxially disposed with through-hole in the vertical direction.
Above-mentioned a kind of non-contact wheel of ball-type magnetic suspension, wherein magnetisable material is thin slice magnet, and each thin slice magnet
Shape it is consistent.
Above-mentioned a kind of non-contact wheel of ball-type magnetic suspension, wherein the rounded setting of magnetisable material, and same wheel or same
The edge of two adjacent magnetisable materials on one levitation device is tangent.
Above-mentioned a kind of non-contact wheel of ball-type magnetic suspension, wherein uniform segmentation is disposed with several magnetic on wheel outer surface
Property substance when, same uniform segmentation is disposed with several magnetisable materials on the inner surface of levitation device；Or on wheel outer surface uniformly
When being covered with magnetisable material, equally uniformly it is covered with magnetisable material on the inner surface of levitation device.
Above-mentioned a kind of non-contact wheel of ball-type magnetic suspension, wherein uniform segmentation is disposed with 12 on the outer surface of wheel
Magnetisable material, uniform segmentation is disposed with 10 or 11 magnetisable materials on the inner surface of levitation device.
A kind of trolley uses the non-contact wheel of ball-type magnetic suspension described in above-mentioned any one, which is characterized in that also wrap
Vehicle body is included, the bottom of vehicle body is provided with several levitation devices, and the bottom of vehicle body is fixed on the top of the outer surface of levitation device.
Above-mentioned a kind of trolley, wherein be provided with wireless drive control system on vehicle body, be built-in in wheel and wirelessly drive
The wireless control system of autocontrol system signal connection.
Above-mentioned a kind of trolley, wherein further include driving device, driving device is arranged in planarized structure, driving device
It is horizontally placed on the top of vehicle body, vehicle body is built-in with AC coil, and several magnetic texures have been arranged in array in driving device.
Above-mentioned a kind of trolley, wherein further include driving wheel, driving wheel is set to the bottom of vehicle body, and driving wheel is connected with
Driver, there are two driving wheel settings, and is respectively arranged at the two sides of vehicle body, and two driving wheels are that differential drives or bi-motor is independent
Driving.
The good effect of above-mentioned technical proposal is:
The above-mentioned non-contact wheel of ball-type magnetic suspension and trolley using the wheel, by be arranged hollow levitation device and
The wheel of ball-type, and by wheel be placed in levitation device it is hollow in and gap is set, and in being provided with magnetic on the outer surface of wheel
Property substance, magnetisable material is again provided on the inner surface of levitation device, and the magnetic field that the two is formed is repelled each other, so that levitation device
It is suspended on wheel, to realize the contactless connection of wheel, improves the manipulation flexibility and mobility of wheel, reduce
Mechanical wear, reduces that vibration is big, and resource utilization is high, and usage experience is good；And the trolley using this kind of structure is provided,
It can be driven using the plane driving device for being provided with magnetic texure with the AC coil being set in vehicle body effect
Dynamic mode, moreover it is possible to be believed using the wireless drive control system being set on vehicle body with the wireless control system being built in wheel
Number connection is come the mode that is driven, and uses using the non-contact wheel of ball-type magnetic suspension as driven wheel and turn to, in vehicle body
The mode that lower setting is driven with the driving wheel of driving, three kinds of modes realize the control to moving of car, and can prevent
The problem of Caton is turned in operational process, the controllability and flexibility of lifting truck can select to drive according to practical service environment
Flowing mode, adaptability is higher, and practicability is more preferable.
Detailed description of the invention
Fig. 1 is a kind of structure chart of the embodiment of non-contact wheel of ball-type magnetic suspension of the invention；
Fig. 2 is a preferred embodiment of the present invention the structure chart of levitation device；
Fig. 3 is a preferred embodiment of the present invention the structure chart of wheel；
Fig. 4 is a preferred embodiment of the present invention the structure chart of the trolley with driving device；
Fig. 5 is a preferred embodiment of the present invention the vehicle structure of wireless drive control system；
Fig. 6 is a preferred embodiment of the present invention the structure chart at a visual angle of the trolley with driving wheel；
Fig. 7 is a preferred embodiment of the present invention the structure chart at another visual angle of the trolley with driving wheel.
In attached drawing: 1, wheel；2, levitation device；21, link block；22, through-hole；3, magnetisable material；4, vehicle body；5, actively
Wheel；6, driving device；61, magnetic texure；7, driver.
Specific embodiment
It is real below in order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention
It applies example combination attached drawing 1 and technical solution provided by the invention is specifically addressed to attached drawing 7, but the following contents is not as of the invention
It limits.
Fig. 1 is a kind of structure chart of the embodiment of non-contact wheel of ball-type magnetic suspension of the invention；Fig. 2 be the present invention one compared with
The structure chart of the levitation device of good embodiment；Fig. 3 is a preferred embodiment of the present invention the structure chart of wheel.As Fig. 1, Fig. 3 with
And shown in Fig. 3, the non-contact wheel of ball-type magnetic suspension provided in this embodiment includes: wheel 1 and levitation device 2, and wheel 1 is in ball-type
Setting, levitation device 2 are arranged in hollow ball-type, and wheel 1 is set to the hollow interior of levitation device 2 and is provided between the two
Gap guaranteed that wheel 1 can arbitrarily roll in levitation device 2, to realize universal steering, improved controllability and flexibly
Property.And the lower part of levitation device 2 offers a through-hole 22, and chamber is set to a part of ball of the hollow interior wheel 1 of levitation device 2
Face is projecting inward from through-hole 22, enables the bottom of wheel 1 to touch ground, and will not be influenced by levitation device 2, structure is more closed
Reason.And in being uniformly covered with magnetisable material 3 on the outer surface of wheel 1, uniformly it is covered with magnetisable material on the inner surface of levitation device 2
3, or several magnetisable materials 3, uniform segmentation on the inner surface of levitation device 2 are disposed in uniform segmentation on the outer surface of wheel 1
Be disposed with several magnetisable materials 3, and no matter any arrangement, be both needed to 3 shape of magnetisable material so that on the outer surface of wheel 1
At the mutually outside polarity of the magnetic field phase of method that is formed with the magnetisable material 3 on the inner surface of levitation device 2 of the polarity of the magnetic field of method phase
Together, and on wheel 1 magnetic field formed and the magnetic field formed on levitation device 2 are uniform magnetic field, so that generating on wheel 1
Magnetic field and levitation device 2 on the magnetic field that generates it is mutually exclusive, realize that levitation device 2 is suspended in the purpose on wheel 1, thus real
The contactless connection for having showed wheel 1, avoids mechanical wear and movement shakes big problem, improves controllability and flexibly
Property.
When entire car wheel structure remains static, the gravity carried on levitation device 2 and the magnetic field generation with wheel 1
Repulsion it is equal, uniform force in horizontal direction simultaneously keeps balancing；When wheel 1 rotates, the outer surface of wheel 1 and the dress that suspends
The relative distance for setting 2 inner surface changes, and the stress balance of horizontal direction is destroyed, cause levitation device 2 can simultaneously to
The direction of motion of wheel 1 is mobile, to realize the movement for driving the weight carried on levitation device 2.
Specifically, link block 21 is provided on the top of the outer surface of levitation device 2, convenient for being connected and fixed on the vehicle of trolley
On body 4, and link block 21 is coaxially disposed with through-hole 22 in the vertical direction, so that stress more evenly, ensure that wheel 1 outstanding
Movement in floating device 2 is more reasonable.
More specifically, magnetisable material 3 is thin slice magnet, and the shapes and sizes of each thin slice magnet are consistent, is guaranteed
The consistent same magnetic field of method, and magnetisable material 3 rounded setting are formed, and on same wheel 1 or same levitation device 2
Two adjacent magnetisable materials 3 edge it is tangent, space layout is more reasonable.Preferably, uniform segmentation cloth on the outer surface of wheel 1
12 magnetisable materials 3 are equipped with, uniform segmentation is disposed with 10 or 11 magnetisable materials 3 on the inner surface of levitation device 2, can be more preferable
Suitable wheel 1 size, and structure is simple, easy to produce and manufacture.
Fig. 4 is a preferred embodiment of the present invention the structure chart of the trolley with driving device.As shown in Figures 1 to 4, it also mentions
For a kind of trolley using the above-mentioned non-contact wheel of ball-type magnetic suspension, trolley includes vehicle body 4 and driving device 6, the bottom of vehicle body 4
Portion is provided with several levitation devices 2, and the bottom of vehicle body 4 is fixed on the top of the outer surface of levitation device 2, realizes 4 He of vehicle body
The connection of the non-contact wheel of ball-type magnetic suspension.Also, driving device 6 is arranged in planarized structure, and driving device 6 is horizontally placed on
The top of vehicle body 4, vehicle body 4 are built-in with AC coil, and several magnetic texures 61 have been arranged in array in driving device 6, pass through
Number and shape and magnetic induction to magnetic texure 61 in driving device 6 carry out different combination arrangements, and combine vehicle
The variation of the current strength in AC coil on body 4 realizes the driving to trolley, and traffic direction is according to magnetic texure 61
The adjusting of arrangement and current strength controlled, to realize the universal steering of trolley, improve grasping for trolley
Control property and flexibility, the Caton problem for preventing trolley from turning to.
Fig. 5 is a preferred embodiment of the present invention the vehicle structure of wireless drive control system.Such as Fig. 1 to Fig. 3 and
Shown in Fig. 5, a kind of trolley using the above-mentioned non-contact wheel of ball-type magnetic suspension is additionally provided, trolley includes vehicle body 4, vehicle body 4
Bottom is provided with several levitation devices 2, and the bottom of vehicle body 4 is fixed on the top of the outer surface of levitation device 2, realizes vehicle body 4
It is built-in in wheel 1 with the connection of the non-contact wheel of ball-type magnetic suspension and in being provided with wireless drive control system on vehicle body 4
The wireless control system connecting with wireless drive control system signal passes through the wireless drive control system and wheel 1 on vehicle body 4
On wireless control system mutual cooperation, realize control wheel 1 turn to and rotation purpose, to realize to moving of car
Control, equally improve the controllability and flexibility of trolley, prevent trolley turn to Caton problem.
Fig. 6 is a preferred embodiment of the present invention the structure chart at a visual angle of the trolley with driving wheel；Fig. 7 is the present invention one
The structure chart at another visual angle of the trolley with driving wheel of preferred embodiment.As shown in Fig. 1 to Fig. 3 and Fig. 6 and Fig. 7, also mention
For a kind of trolley using the above-mentioned non-contact wheel of ball-type magnetic suspension, trolley includes vehicle body 4 and driving wheel 5, the bottom of vehicle body 4
Several levitation devices 2 are provided with, the bottom of vehicle body 4 is fixed on the top of the outer surface of levitation device 2, realizes vehicle body 4 and ball
The connection of the non-contact wheel of type magnetic suspension.And driving wheel 5 is set to the bottom of vehicle body 4, and driving wheel 5 is connected with driver 7, excellent
Choosing, there are two the settings of driving wheel 5, and is respectively arranged at the two sides of vehicle body 4, and two driving wheels 5 are that differential drives or bi-motor is only
Vertical driving, realizes using the non-contact wheel of ball-type magnetic suspension and turns to, and driving wheel 5 provides driving, equally improves trolley
Controllability and flexibility, the Caton problem for preventing trolley from turning to.
The non-contact wheel of ball-type magnetic suspension on the above-mentioned trolley using the non-contact wheel of ball-type magnetic suspension is on vehicle body 4
Arrangement and arrangement quantity can be selected according to actual use demand, improve adaptability.
The non-contact wheel of ball-type magnetic suspension provided in this embodiment and the trolley using the wheel, car wheel structure includes ball-type
Wheel 1 and hollow levitation device 2, wheel 1 be set to levitation device 2 it is hollow in, levitation device 2 is connect with vehicle body 4, and
The two tool has magnetisable material 3；By the way that magnetic field on magnetic field on wheel 1 and levitation device 2 is formed arrangement of repelling each other, so that the dress that suspends
It sets 2 to be suspended on wheel 1, realizes the contactless connection of wheel 1, so that mechanical wear and operation vibration problems are prevented,
And universal can turn to, improve controllability and flexibility；And provide the plane driving dress using carrying magnetic structure 61
6 are set to connect with the effect of the AC coil of vehicle body 4, the wireless drive control system of vehicle body 4 with the wireless control system signal of wheel 1
And the trolley for three kinds of driving methods that the driving wheel 5 of tape drive 7 is driven is added, and realize the control to moving of car
System, it is therefore prevented that turn to Caton problem, improve the controllability and flexibility of trolley.
The above is only preferred embodiments of the present invention, are not intended to limit the implementation manners and the protection scope of the present invention, right
For those skilled in the art, it should can appreciate that and all replace with being equal made by description of the invention and diagramatic content
It changes and obviously changes obtained scheme, should all be included within the scope of the present invention.
Claims (10)
1. a kind of non-contact wheel of ball-type magnetic suspension characterized by comprising wheel and levitation device, the wheel are in ball-type
Setting, the levitation device are arranged in hollow ball-type, and the wheel is set to hollow interior and the two of the levitation device
Between be provided with gap, the lower part of the levitation device offers a through-hole, and a part of spherical surface of the wheel is from the through-hole
It is projecting inward, magnetisable material is uniformly covered on the outer surface of the wheel or uniform segmentation is disposed with several magnetisable materials, it is described outstanding
Uniformly it is covered with magnetisable material on the inner surface of floating device or uniform segmentation is disposed with several magnetisable materials, and the appearance of the wheel
The method that the magnetisable material on the polarity of the magnetic field of method phase and the inner surface of the levitation device that magnetisable material on face is formed is formed
Mutually outside polarity of the magnetic field is identical.
2. the non-contact wheel of ball-type magnetic suspension according to claim 1, which is characterized in that the outer surface of the levitation device
Top be provided with link block, the link block is coaxially disposed with the through-hole in the vertical direction.
3. the non-contact wheel of ball-type magnetic suspension according to claim 1, which is characterized in that the magnetisable material is thin slice magnetic
Iron, and the shape of each thin slice magnet is consistent.
4. the non-contact wheel of ball-type magnetic suspension according to claim 1 or 3, which is characterized in that the magnetisable material is in circle
Shape setting, and the edge of the two adjacent magnetisable materials on the same wheel or the same levitation device is tangent.
5. the non-contact wheel of ball-type magnetic suspension according to claim 1, which is characterized in that on the outer surface of the wheel
When even subregion is disposed with several magnetisable materials, same uniform segmentation is disposed with several magnetic materials on the inner surface of the levitation device
Matter；Or when being uniformly covered with magnetisable material on the outer surface of the wheel, equally uniformly it is covered on the inner surface of the levitation device
Magnetisable material.
6. the non-contact wheel of ball-type magnetic suspension according to claim 5, which is characterized in that on the outer surface of the wheel
Even subregion is disposed with 12 magnetisable materials, and uniform segmentation is disposed with 10 or 11 magnetic materials on the inner surface of the levitation device
Matter.
7. a kind of trolley exists including the non-contact wheel of ball-type magnetic suspension, feature described in any one of claim 1~6
In further including vehicle body, the bottom of the vehicle body is provided with several levitation devices, the top of the outer surface of the levitation device
It is fixed on the bottom of the vehicle body.
8. trolley according to claim 7, which is characterized in that be provided with wireless drive control system, institute on the vehicle body
State the wireless control system for being built-in in wheel and connecting with the wireless drive control system signal.
9. trolley according to claim 7, which is characterized in that further include driving device, the driving device is in plane
Structure arrangement, the driving device are horizontally placed on the top of the vehicle body, and the vehicle body is built-in with AC coil, and the drive
Several magnetic texures have been arranged in array on dynamic device.
10. trolley according to claim 7, which is characterized in that further include driving wheel, the driving wheel is set to the vehicle
The bottom of body, the driving wheel are connected with driver, and there are two the driving wheel settings, and is respectively arranged at the two of the vehicle body
Side, two driving wheels are differential driving or dual motors drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810975832.3A CN109178143A (en) | 2018-08-24 | 2018-08-24 | A kind of non-contact wheel of ball-type magnetic suspension and the trolley using the wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810975832.3A CN109178143A (en) | 2018-08-24 | 2018-08-24 | A kind of non-contact wheel of ball-type magnetic suspension and the trolley using the wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109178143A true CN109178143A (en) | 2019-01-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810975832.3A Pending CN109178143A (en) | 2018-08-24 | 2018-08-24 | A kind of non-contact wheel of ball-type magnetic suspension and the trolley using the wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109178143A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110979508A (en) * | 2019-12-26 | 2020-04-10 | 湖南斯德克智能开关有限公司 | Magnetic suspension workshop travelling bogie |
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| CN106541777A (en) * | 2016-12-07 | 2017-03-29 | 徐州乐泰机电科技有限公司 | A kind of full angle bogie car |
| CN107516143A (en) * | 2017-07-24 | 2017-12-26 | 上海理工大学 | A kind of preferred AGV handling systems in path based on dijkstra's algorithm |
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| CN103158433A (en) * | 2011-12-08 | 2013-06-19 | 现代自动车株式会社 | System for driving spherical wheel |
| CN103036482A (en) * | 2012-12-07 | 2013-04-10 | 葛昂 | High-efficient electromagnetic drive system |
| AU2014100796A4 (en) * | 2014-07-10 | 2014-08-14 | Williams, Geoffrey Eaton MR | Caravan Automatic Latch Monitor (CALM) device monitors all the roof locking latches on a pop top or similar type caravan. The CALM device warns both visually and aurally if one or more roof locking latches are not in their full unlocked position when the crank door hatch is open. The CALM device will signal visually when it is safe to raise the caravan’s roof. Additionally, the CALM device will indicate when the caravan's battery voltage falls below a set point (typically around 11.7 - 12 volts) to indicate that the battery requires recharging. |
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| CN110979508A (en) * | 2019-12-26 | 2020-04-10 | 湖南斯德克智能开关有限公司 | Magnetic suspension workshop travelling bogie |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190111 |
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| RJ01 | Rejection of invention patent application after publication |