CN112140926A - Anti-damage charging pile protection device - Google Patents
Anti-damage charging pile protection device Download PDFInfo
- Publication number
- CN112140926A CN112140926A CN202010969762.8A CN202010969762A CN112140926A CN 112140926 A CN112140926 A CN 112140926A CN 202010969762 A CN202010969762 A CN 202010969762A CN 112140926 A CN112140926 A CN 112140926A
- Authority
- CN
- China
- Prior art keywords
- fixing
- ring
- sheath unit
- sheath
- charging pile
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
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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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
Abstract
The invention discloses a charging pile protection device for preventing damage, and relates to the technical field of charging cable protection equipment. The cable sheath comprises a first sheath unit and a second sheath unit which are alternately arranged; the sheath unit II comprises a first fixing ring and a second fixing ring which are arranged in parallel; a connecting lath is connected between the first fixing ring and the second fixing ring; a plurality of first fixing battens are arranged on the first fixing rings positioned on the two sides of the connecting battens, a convex column is arranged at the end part of the first fixing batten, and a limiting clamping plate is arranged at the end part of the convex column; the second fixing rings positioned on the two sides of the connecting plate are provided with second fixing laths, and the end parts of the second fixing laths are provided with limiting holes matched with the limiting clamping plates; the second sheath unit comprises ring bodies positioned at two ends, and a plurality of connecting rods are connected between the two ring bodies. According to the cable sheath, the cable sheath is formed by the sheath unit I and the sheath unit II, so that a cable is protected, and the abrasion of an outer insulating skin of the cable caused by long-term dragging is avoided.
Description
Technical Field
The invention belongs to the technical field of charging cable protection equipment, and particularly relates to a charging pile protection device for preventing damage.
Background
With the challenge of energy demand and resource environment to human beings, the number of new energy automobiles is continuously increasing. In current new energy automobile charging station, be provided with one in the parking stall department of charging of every charging station and fill electric pile, draw forth the charging wire on one side of filling electric pile, be provided with the rifle that charges at the front end of charging wire, when needs charge to electric bus, will charge in the rifle inserts the charging hole on electric bus, charge to electric bus. In prior art, because the outermost insulating skin of charging wire is the rubber material, consequently after long-time the use, because frequently dragging of charging wire, the phenomenon of insulating skin wearing and tearing can take place for the charging wire, in case insulating skin degree of wear is great, and in time take remedial action, the inside wire of power cord can expose outside and cause electric leakage or even short circuit phenomenon, because the inside great and two polar voltage that charge of electric motor car charging device is 750V, so in case take place electric leakage or short circuit phenomenon, very easily cause danger. Therefore how to obtain one kind and protect new energy automobile charging cable, it is crucial to avoid charging wire insulating skin to take place wearing and tearing in the frequent in-process that pulls.
Disclosure of Invention
The invention aims to provide a charging pile protection device for preventing damage, and the charging pile protection device is used for solving the problem that an insulating skin of a charging wire provided by the background technology center is abraded in the frequent dragging process.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a protection device of a charging pile for preventing damage, which comprises a cable sheath arranged on the peripheral side of a cable, wherein the cable sheath comprises a sheath unit I and a sheath unit II which are alternately arranged; the sheath unit II comprises a first fixing ring and a second fixing ring which are arranged in parallel; a connecting lath is connected between the first fixing ring and the second fixing ring; a plurality of first fixing battens are arranged on the first fixing rings positioned on the two sides of the connecting battens, a convex column is arranged at the end part of the first fixing batten, and a limiting clamping plate is arranged at the end part of the convex column; a plurality of fixing plate strips II matched with the fixing plate strips I one by one are arranged on the fixing rings II positioned on the two sides of the connecting plate, and limiting holes matched with the limiting clamping plates are formed in the end parts of the fixing plate strips II; the limiting hole is a waist-shaped hole; the sheath unit II comprises ring bodies positioned at two ends, and a plurality of connecting rods are connected between the two ring bodies; the inner side of the ring body is provided with a plurality of convex blocks, one side of each convex block, which is close to the circle center of the ring body, is provided with a blind hole, the bottom of each blind hole is provided with a spring, the end part of each spring is connected with a cylinder which slides along the inner side wall of the corresponding blind hole, and the end part of each cylinder is provided with a hemisphere.
Furthermore, the cylinder body and the hemispheroid are an integral part, and the cylinder body is made of plastic materials or stainless steel materials; the hemispheroid is made of plastic materials or rubber materials.
Furthermore, the semi-circle radius of the waist-shaped hole is larger than that of the convex column and smaller than that of the limiting clamping plate; meanwhile, the semi-circle diameter of the waist-shaped hole is larger than the thickness of the limiting clamping plate.
Furthermore, six first fixing holes are formed in the first fixing ring, and six second fixing holes are formed in the second fixing ring; the ring body is provided with a first mounting hole which is matched with the second fixing hole and/or the first fixing hole one by one.
Furthermore, the whole of the sheath unit II is made of plastic or metal.
Furthermore, the connecting lath is made of deformable materials, and the first fixing lath and the second fixing lath are made of plastic plates.
Further, the connecting lath is made of rubber.
Furthermore, a wear-resistant rolling structure capable of moving along the ground is arranged between the first sheath unit and the second sheath unit.
Furthermore, the wear-resistant rolling structure comprises an outer ring which can be sleeved on the outer side of the ring body, and the outer side surface of the outer ring is provided with a protruding part which can move along the ground; a flange bent inwards is arranged on one side of the outer ring, and a second mounting hole matched with the first mounting hole is formed in the flange; the wear-resistant rolling structure is arranged between the first sheath unit and the second sheath unit through a screw rod assembly, and the screw rod assembly comprises a screw rod and a nut in threaded connection with the end of the screw rod;
the screw penetrates through the first mounting hole, the second mounting hole and the second fixing hole/the first fixing hole in sequence.
Furthermore, the convex part comprises a spherical rubber bulge arranged on the outer side surface of the outer ring; or POM material balls embedded on the outer side surface of the outer ring.
The invention has the following beneficial effects:
according to the cable sheath, the cable sheath is formed by the sheath unit I and the sheath unit II, so that a cable is protected, and the abrasion of an outer insulating skin of the cable caused by long-term dragging is avoided; simultaneously through the setting of wear-resisting roll structure, the sliding friction that traditional cable dragged converts rolling friction into, and it is comparatively laborsaving to drag the in-process, and adopts the ball to conveniently remove along each direction.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a view of a cable jacket in use according to the present invention;
FIG. 2 is a schematic structural view of a sheath unit according to the present invention;
FIG. 3 is a schematic structural view of the wear-resistant rolling structure of the present invention;
FIG. 4 is a schematic structural diagram of a sheath unit II according to the present invention;
FIG. 5 is a cross-sectional view of a bump according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
Referring to fig. 1 to 5, the present invention provides a protection device for a charging pile for preventing damage, including a cable sheath disposed on an outer circumferential side of an electric cable 10, the cable sheath includes a sheath unit i 20 and a sheath unit ii 40 alternately disposed; the second sheath unit 40 comprises a first fixing ring 21 and a second fixing ring 22 which are arranged in parallel; a connecting lath 23 is connected between the first fixing ring 21 and the second fixing ring 22; a plurality of first fixing battens 26 are arranged on the first fixing rings 21 positioned at two sides of the connecting battens 23, a convex column 27 is arranged at the end part of the first fixing battens 26, and a limiting clamping plate 28 is arranged at the end part of the convex column 27; the second fixing rings 22 positioned on the two sides of the connecting plate 23 are provided with a plurality of second fixing laths 24 which are matched with the first fixing laths 26 one by one, and the end parts of the second fixing laths 24 are provided with limiting holes 25 matched with a limiting clamping plate 28; the limiting hole 25 is a waist-shaped hole; the second sheath unit 40 comprises ring bodies 4 positioned at two ends, and a plurality of connecting rods 43 are connected between the two ring bodies 4; the inner side of the ring body 4 is provided with a plurality of protrusions 42, one side of the protrusions 42, which is close to the center of the circle of the ring body 4, is provided with a blind hole 421, the bottom of the blind hole 421 is provided with a spring 422, the end of the spring 422 is connected with a cylinder 44 which slides along the inner side wall of the blind hole 421, and the end of the cylinder 44 is provided with a hemisphere 45.
Preferably, the cylinder 44 and the hemisphere 45 are an integral piece, and the cylinder 44 is made of plastic or stainless steel; the hemisphere 45 is made of plastic or rubber.
Preferably, the semi-circle radius of the waist-shaped hole is larger than the radius of the convex column 27 and smaller than the radius of the limit clamping plate 28; meanwhile, the semi-circle diameter of the waist-shaped hole is larger than the thickness of the limiting clamping plate 28.
Preferably, the first fixing ring 21 is provided with six first fixing holes 211, and the second fixing ring 22 is provided with six second fixing holes 221; the ring body 4 is provided with first mounting holes 41 which are matched with the second fixing holes 221 and/or the first fixing holes 211 one by one.
Preferably, the sheath unit 40 is made of plastic or metal.
Preferably, the connecting strips 23 are made of a deformable material, and the first fixing strips 26 and the second fixing strips 24 are made of plastic plates.
Preferably, the connecting strips 23 are of rubber.
Preferably, a wear-resistant rolling structure 30 which can move along the ground is further arranged between the first sheath unit 20 and the second sheath unit 40.
Preferably, the wear-resistant rolling structure 30 comprises an outer ring 31 capable of being sleeved on the outer side of the ring body 4, and the outer side surface of the outer ring 31 is provided with a protruding part 32 capable of moving along the ground; one side of the outer ring 31 is provided with a flanging 33 bent inwards, and the flanging 33 is provided with a second mounting hole 34 matched with the first mounting hole 41; the wear-resistant rolling structure 30 is arranged between the first sheath unit 20 and the second sheath unit 40 through a screw assembly, and the screw assembly comprises a screw and a nut in threaded connection with the end of the screw;
the screw rod penetrates through the first mounting hole 41, the second mounting hole 34 and the second fixing hole 221/the first fixing hole 211 in sequence.
Preferably, the protrusion 32 comprises a spherical rubber projection provided on the outer side surface of the outer ring 31; or POM balls embedded on the outer surface of the outer ring 31.
Due to the arrangement of the first sheath unit 20 and the second sheath unit 40, the cable 10 positioned in the inner part is well protected, and external force damage is avoided;
meanwhile, through the arrangement of the bump 42, the blind hole 421, the spring 422, the cylinder 44 and the hemisphere 45, when the second sheath unit 40 is fixed outside the cables 10 with different sizes, the second sheath unit 40 can be automatically fixed, and the cable sheath formed by the second sheath unit 40 and the first sheath unit 20 is prevented from moving freely along the axial direction of the cables 10 under the action of gravity.
The hemisphere 45 and the hemisphere 45 are made of plastic or rubber, so that the hemisphere 45 is prevented from pressing the outer insulating layer of the cable 10 and from puncturing the outer insulating layer.
According to the invention, through the first sheath unit 20 and the matching arrangement of the second fixing strip 24, the first fixing strip 26 and the connecting strip 23, when the cable 10 is bent, the first sheath unit 20 is relatively displaced through the second fixing strip 24 and the first fixing strip 26, so that the whole first sheath unit 20 is bent to adapt to the completeness of the cable 10;
meanwhile, the second sheath unit 40 is made of an inflexible material, so that the second sheath unit 40 is not bent when the cable 10 is bent in use, the abrasion-resistant rolling structures 30 arranged at two ends of the second sheath unit 40 can move along the ground, and the second sheath unit 40 and the first sheath unit 20 are prevented from being worn by the ground due to friction in the moving process along with the cable 10. Meanwhile, due to the arrangement of the POM material balls, the abrasion-resistant rolling structure 30 can move along any dragging direction in the dragging process.
The invention can select to install a proper number of the sheath units two 40 and the sheath units one 20 on the outer side of the cable 10 according to actual requirements.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. The utility model provides a prevent destroying with filling electric pile protection device, is including setting up the cable sheath at cable conductor (10) periphery side, its characterized in that: the cable sheath comprises a first sheath unit (20) and a second sheath unit (40) which are alternately arranged;
the second sheath unit (40) comprises a first fixing ring (21) and a second fixing ring (22) which are arranged in parallel;
a connecting lath (23) is connected between the first fixing ring (21) and the second fixing ring (22);
a plurality of first fixing battens (26) are arranged on the first fixing rings (21) positioned on the two sides of the connecting battens (23), a convex column (27) is arranged at the end part of each first fixing batten (26), and a limiting clamping plate (28) is arranged at the end part of each convex column (27);
a plurality of second fixing battens (24) which are matched with the first fixing battens (26) one by one are arranged on the second fixing rings (22) positioned on the two sides of the connecting plate (23), and limiting holes (25) matched with the limiting clamping plates (28) are formed in the end parts of the second fixing battens (24); the limiting hole (25) is a waist-shaped hole;
the second sheath unit (40) comprises ring bodies (4) positioned at two ends, and a plurality of connecting rods (43) are connected between the two ring bodies (4);
the inboard of ring body (4) is provided with a plurality of lugs (42), one side that lug (42) are close to the ring body (4) centre of a circle is provided with a blind hole (421), the bottom of blind hole (421) is provided with a spring (422), the end connection of spring (422) has one along the gliding cylinder (44) of blind hole (421) inside wall, the tip of cylinder (44) is provided with a hemisphere body (45).
2. The device for protecting a charging pile against vandalism as claimed in claim 1, wherein said post (44) and hemisphere (45) are a single piece, said post (44) being made of plastic or stainless steel; the hemispheroid (45) is made of plastic materials or rubber materials.
3. The device for protecting a charging pile against damage as claimed in claim 1, wherein the semi-circle radius of the waist-shaped hole is larger than the radius of the convex column (27) and smaller than the radius of the limiting clamping plate (28); meanwhile, the semi-circle diameter of the waist-shaped hole is larger than the thickness of the limiting clamping plate (28).
4. The device for protecting a charging pile against damage as claimed in claim 1, wherein said first fixing ring (21) is provided with six first fixing holes (211), and said second fixing ring (22) is provided with six second fixing holes (221);
the ring body (4) is provided with first mounting holes (41) which are matched with the second fixing holes (221) and/or the first fixing holes (211) one by one.
5. The device for protecting a charging pile against damage as claimed in claim 4, wherein the sheath unit (40) is made of plastic or metal.
6. The device for protecting a charging pile against vandalism according to claim 5, characterized in that the connecting strips (23) are made of deformable material, and the first fixing strips (26) and the second fixing strips (24) are made of plastic plates.
7. The device for protecting a charging pile against vandalism according to claim 6, characterized in that the connecting strips (23) are made of rubber.
8. The device for protecting a charging pile against damage according to any one of claims 4 to 7, wherein a wear-resistant rolling structure (30) which can move along the ground is further provided between the first sheath unit (20) and the second sheath unit (40).
9. The device for protecting a charging pile against damage as claimed in claim 8, wherein said wear-resistant rolling structure (30) comprises an outer ring (31) that can be fitted around the outside of the ring body (4), and the outside of said outer ring (31) is provided with a protrusion (32) that can move along the ground;
a flanging (33) bent inwards is arranged on one side of the outer ring (31), and a second mounting hole (34) matched with the first mounting hole (41) is formed in the flanging (33);
the wear-resistant rolling structure (30) is arranged between the first sheath unit (20) and the second sheath unit (40) through a screw assembly, and the screw assembly comprises a screw and a nut in threaded connection with the end of the screw;
the screw rod penetrates through the first mounting hole (41), the second mounting hole (34) and the second fixing hole (221)/the first fixing hole (211) in sequence.
10. The device for protecting a charging pile against vandalism according to claim 9, characterized in that said projection (32) comprises a spherical rubber projection on the outer side of the outer ring (31); or POM material balls embedded on the outer side surface of the outer ring (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010969762.8A CN112140926B (en) | 2020-09-15 | 2020-09-15 | Anti-damage charging pile protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010969762.8A CN112140926B (en) | 2020-09-15 | 2020-09-15 | Anti-damage charging pile protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112140926A true CN112140926A (en) | 2020-12-29 |
| CN112140926B CN112140926B (en) | 2021-11-26 |
Family
ID=73892249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010969762.8A Active CN112140926B (en) | 2020-09-15 | 2020-09-15 | Anti-damage charging pile protection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN112140926B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202210669U (en) * | 2011-09-22 | 2012-05-02 | 长沙电缆附件有限公司 | Cold shrink telescoping tube for power cable sealing and watertightness |
| CN109346215A (en) * | 2018-09-21 | 2019-02-15 | 何银亚 | A kind of flexible wire structure of insulation fire-type |
| CN110228387A (en) * | 2019-07-25 | 2019-09-13 | 杭州隽珀科技有限公司 | A kind of charging pile plug regulating device based on snakelike movement |
| CN110809531A (en) * | 2017-06-02 | 2020-02-18 | 易格斯有限公司 | Multi-conductor cable with reduced diameter and contact device for the same |
-
2020
- 2020-09-15 CN CN202010969762.8A patent/CN112140926B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202210669U (en) * | 2011-09-22 | 2012-05-02 | 长沙电缆附件有限公司 | Cold shrink telescoping tube for power cable sealing and watertightness |
| CN110809531A (en) * | 2017-06-02 | 2020-02-18 | 易格斯有限公司 | Multi-conductor cable with reduced diameter and contact device for the same |
| US20200180450A1 (en) * | 2017-06-02 | 2020-06-11 | Igus Gmbh | Multi-conductor cable of reduced diameter and contact apparatus for same |
| CN109346215A (en) * | 2018-09-21 | 2019-02-15 | 何银亚 | A kind of flexible wire structure of insulation fire-type |
| CN110228387A (en) * | 2019-07-25 | 2019-09-13 | 杭州隽珀科技有限公司 | A kind of charging pile plug regulating device based on snakelike movement |
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| Publication number | Publication date |
|---|---|
| CN112140926B (en) | 2021-11-26 |
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