Annular multi-charging-position charging pile

Abstract

The invention relates to the technical field of charging piles, in particular to an annular multi-charging-position charging pile, and an annular power supply mechanism comprises a plurality of insulating inner rings stacked on the top surface of a charging pile cabinet body and a top cover covering the top of the insulating inner ring at the top end; the rotary supporting mechanism comprises an insulating outer ring rotationally sleeved outside the insulating inner ring, a long shell fixed on the outer peripheral wall of the insulating outer ring along the radial direction, and a socket fixed at the outer end of the inner cavity of the long shell; the grooved wheels are arranged in an inner cavity of the long shell in a zigzag shape, the elastic supporting piece is arranged on the top and bottom face of the long shell and used for elastically supporting the top and bottom ends of center shafts of the grooved wheels in the direction perpendicular to the axis of the long shell, the charging wire sequentially winds around the grooved wheels, and the inner end of the charging wire is fixed to the peripheral wall of the insulating outer ring; a rotary power supply structure is arranged between the insulating outer ring and the insulating inner ring, and the wiring end of the charging pile cabinet body and a core wire at the inner end of the charging wire are electrically connected to the rotary power supply structure; and the problems of low utilization rate of the charging pile and waste of charging bit resources are well solved.

Description

Technical Field

[0001] The present invention relates to the technical field of charging piles, and in particular to a ring-shaped charging pile with multiple charging positions. Background Art

[0002] The function of the charging pile is similar to that of a gas pump in a gas station. It can be fixed on the ground or on a wall and installed in public buildings (public buildings, shopping malls, public parking lots, etc.) and residential parking lots or charging stations. It can charge various types of electric vehicles according to different voltage levels. The input end of the charging pile is directly connected to the AC power grid, and the output end is equipped with a charging plug for charging electric vehicles.

[0003] With the country's promotion of new energy vehicles and the maturity of new energy vehicle technology, more and more people now favor new energy vehicles, which not only saves fuel money, but also makes a strong contribution to environmental protection.

[0004] However, with the popularity of new energy vehicles, the application of charging piles has gradually revealed its shortcomings. Since it takes a long time to fully charge, users often need to wait in line for a long time. At present, in order to save users' waiting time in line for charging, charging piles are equipped in each parking space. Although this approach can solve the problem of queuing time, the construction of multiple charging piles will greatly increase the investment cost. In actual applications, not every vehicle parked in a parking space is being charged, and the utilization rate of the charging piles is low. The use of a multi-charging charging pile to fully and reasonably allocate charging pile resources is an urgent problem that needs to be solved. Summary of the invention

[0005] The object of the present invention is to provide a ring-shaped multi-charging position charging pile, which is used to solve the problem of low charging pile utilization and waste of charging position resources in the prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ring-shaped multi-charging position charging pile, the ring-shaped power supply mechanism includes a plurality of insulating inner rings stacked in the middle of the top surface of the charging pile cabinet and a top cover covering the top of the insulating inner ring at the top; the rotating support mechanism includes an insulating outer ring rotatably sleeved on the outside of the insulating inner ring, a long shell body radially fixed to the outer peripheral wall of the insulating outer ring, a socket fixed to the inner cavity of the long shell body close to the outer end and used for inserting the charging gun, a plurality of groove wheels arranged in a zigzag shape in the inner cavity of the long shell body, and an elastic support member provided on the top and bottom surfaces of the long shell body and used for elastically supporting the top and bottom ends of the central axis of the groove wheel in a direction perpendicular to the axis of the long shell body, the charging line passes around the plurality of groove wheels in turn, and the inner end of the charging line is fixed on the outer peripheral wall of the insulating outer ring; a rotating power supply structure is provided between the insulating outer ring and the insulating inner ring, and the wiring terminal of the charging pile cabinet and the core wire at the inner end of the charging line are respectively electrically connected to the rotating power supply mechanism.

[0007] Preferably, the outer circumferential wall of the insulating inner ring is vertically provided with a plurality of annular grooves, the inner cavities of the annular grooves are respectively fixedly mounted with annular conductors one, the inner circumferential wall of the insulating inner ring is provided with core wire connectors one respectively electrically connected to the corresponding annular conductors one, the core wire connectors one are electrically connected to the wiring terminals of the charging pile cabinet, the inner circumferential wall of the insulating outer ring is fixed with annular conductors two respectively rotatably engaged with the annular grooves and correspondingly electrically contacting the annular conductor one, the outer circumferential wall of the insulating outer ring is respectively provided with core wire connectors two electrically connected to the annular conductors two one by one at the positions corresponding to the inner cavities of the long shell body, and the core wires at the inner ends of the charging cables are respectively electrically connected to the core wire connectors two.

[0008] Preferably, an arc block is fixed on the outer peripheral wall of the insulating outer ring at a position corresponding to the inner cavity of the long shell, and an arc clamp is fixedly connected to the arc block by bolts, and the arc clamp and the arc block constitute a clamp structure for fixing the inner end of the charging cable.

[0009] Preferably, a plurality of vertical through holes are evenly arranged along the circumference of the insulating inner ring, a plurality of fixing rods which are respectively sleeved with the through holes are vertically fixed to the top surface of the charging pile cabinet, an external thread is arranged on the top end of the fixing rod, a clamping nut is sleeved on the external thread, and a sleeve ring which is sleeved with the inner cavity of the insulating inner ring at the top end is arranged on the bottom surface of the top cover.

[0010] Preferably, the top and bottom surfaces of the long shell are respectively provided with rectangular grooves that are slidably engaged with the top and bottom ends of the groove wheel center axis in a direction perpendicular to its axis, and the elastic support member includes a strip shell fixed to the top and bottom surfaces of the long shell and corresponding to the rectangular groove, a slider slidably engaged in the inner cavity of the strip shell, and a spring supported between the slider and one end surface of the inner cavity of the strip shell, and a strip groove that is slidably engaged with the end of the groove wheel center axis is opened in the strip shell near the rectangular groove.

[0011] Preferably, wing plates are respectively fixed on both sides of the strip-shaped shell near the top and bottom surfaces of the long shell, and the wing plates are fixed to the corresponding top and bottom surfaces of the long shell by screws.

[0012] Preferably, a guide wheel is rollingly mounted on one end of the inner cavity of the strip shell away from the spring, and a side wall of the slider away from the spring is abutted against the outer wall of the guide wheel. A column cavity is provided at the center of the guide wheel, and the top and bottom ends of the central axis of the groove wheel are respectively fixedly docked with plug-in columns that match the column cavity sleeve.

[0013] Preferably, an annular groove is fixed on the top surface of the insulating outer ring near the outer edge, and an annular protrusion rotatably engaging with the annular groove is provided on the bottom surface of the insulating outer ring near the outer edge.

[0014] Preferably, a locking mechanism is provided at the outer end of the long housing for preventing the pulled-out charging cable from retracting.

[0015] Preferably, the locking mechanism includes a cylindrical outer shell fixed on the top surface of the outer end of the long shell, an arcuate base fixed on the bottom surface of the outer end of the inner cavity of the long shell, an arcuate pressure plate arranged on the upper side of the arcuate base, a telescopic cylinder whose bottom end of the piston rod is fixed to the middle of the top surface of the arcuate pressure plate and is sleeved in the inner cavity of the cylindrical outer shell, and a guide rod whose bottom end is vertically fixed to the top surfaces on both sides of the arcuate base and is slidably sleeved on both sides of the bottom of the arcuate pressure plate; a circular hole which is slidably sleeved on the piston rod of the telescopic cylinder is provided on the top surface of the outer end of the long shell corresponding to the position of the cylindrical outer shell.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention relates to a ring-shaped multi-charging position charging pile in which multiple rotating support mechanisms can be flexibly rotated to positions corresponding to parking spaces of vehicles to be charged, and the multiple rotating support mechanisms complement each other to improve the utilization rate of the charging pile and avoid the problem of waste of charging position resources.

[0018] 2. The present invention relates to a ring-shaped multi-charging station charging pile in which the charging cable and the charging gun are flexibly and conveniently stored in a long shell of a rotating support mechanism, which is not only convenient for use but also improves the protection effect of the charging cable and the charging gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the exploded structure of the ring power supply mechanism of the present invention;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the insulating inner ring of the present invention;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the rotary support mechanism of the present invention;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the insulating outer ring of the present invention;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the long shell of the present invention;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the elastic support member of the present invention;

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the sheave of the present invention;

[0027] Fig. 9 It is a three-dimensional structural schematic diagram of the locking mechanism of the present invention.

[0028] In the figure: 1- charging pile cabinet;

[0029] 2- Charging cable;

[0030] 3-Charging gun;

[0031] 4-ring power supply mechanism; 4.1-insulating inner ring; 4.1.1-ring groove; 4.1.2-ring conductor 1; 4.1.3-core wire connector 1; 4.1.4-perforation; 4.2-top cover; 4.2.1-sleeve ring; 4.3-fixing rod; 4.3.1-external thread; 4.4-pressing nut;

[0032] 5-rotating support mechanism; 5.1-insulating outer ring; 5.1.1-annular conductor 2; 5.1.2-core wire connector 2; 5.1.3-annular protrusion; 5.1.4-annular groove; 5.1.5-arc block; 5.1.6-arc plate; 5.2-long shell; 5.2.1-rectangular groove; 5.2.2-round hole; 5.3-socket; 5.4-elastic support member; 5.4.1-strip shell; 5.4.1.1-strip groove; 5.4.1.2-wing plate; 5.4.2-guide wheel; 5.4.2.1-column cavity; 5.4.3-slider; 5.4.4-spring; 5.5-groove wheel; 5.5.1-plug-in column;

[0033] 6-locking mechanism; 6.1-arc base; 6.2-arc pressure plate; 6.3-guide rod; 6.4-telescopic cylinder; 6.5-cylindrical shell. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-9 The present invention provides a technical solution, a ring-shaped multi-charging position charging pile, the ring-shaped power supply mechanism 4 includes a plurality of insulating inner rings 4.1 stacked in the middle of the top surface of the charging pile cabinet 1 and a top cover 4.2 covering the top of the top insulating inner ring 4.1. Among them, the insulating inner ring 4.1 is evenly provided with a plurality of vertical through holes 4.1.4 along the circumferential direction, and the top surface of the charging pile cabinet 1 is vertically fixed with a plurality of fixing rods 4.3 respectively sleeved with the through holes 4.1.4, and the top of the fixing rod 4.3 is provided with an external thread 4.3.1, and a compression nut 4.4 is threadedly sleeved on the external thread 4.3.1, and the bottom surface of the top cover 4.2 is provided with a sleeve ring 4.2.1 that is sleeved with the inner cavity of the insulating inner ring 4.1 at the top. That is, multiple insulating inner rings 4.1 placed in a stacked manner are sequentially inserted through the through holes 4.1.4 on the fixing rod 4.3, and the clamping nut 4.4 is installed and tightened so that the clamping nut 4.4 is pressed against the top surface of the insulating inner ring 4.1 at the top to achieve fixed assembly of the insulating inner ring 4.1. The top cover 4.2 is fixed to the insulating inner ring 4.1 at the top through the sleeve ring 4.2.1. The top surface of the top cover 4.2 is a spherical convex structure, and the top cover 4.2 provides protection for the multiple insulating inner rings 4.1 below.

[0036] The outer wall of the insulating inner ring 4.1 is vertically provided with a plurality of annular grooves 4.1.1, and the inner cavities of the annular grooves 4.1.1 are respectively fixed with annular conductors 4.1.2, and the inner wall of the insulating inner ring 4.1 is provided with core wire connectors 4.1.3 respectively electrically connected to the corresponding annular conductors 4.1.2, and the core wire connectors 4.1.3 are electrically connected to the wiring terminals of the charging pile cabinet 1.

[0037] The rotating support mechanism 5 includes an insulating outer ring 5.1 rotatably sleeved on the outside of the insulating inner ring 4.1, a long shell 5.2 radially fixed to the outer peripheral wall of the insulating outer ring 5.1, a socket 5.3 fixed to the inner cavity of the long shell 5.2 close to the outer end and used for inserting the charging gun 3, a plurality of groove wheels 5.5 arranged in a zigzag shape in the inner cavity of the long shell 5.2, and an elastic support member 5.4 provided on the top and bottom surfaces of the long shell 5.2 and used for elastically supporting the top and bottom ends of the central axis of the groove wheel 5.5 in a direction perpendicular to the axis of the long shell 5.2. The charging line 2 passes around the plurality of groove wheels 5.5 in sequence, and the inner end of the charging line 2 is fixed to the outer peripheral wall of the insulating outer ring 5.1. Among them, the inner circumference wall of the insulating outer ring 5.1 is fixed with a ring conductor 2 5.1.1 that is rotatably engaged with the ring groove 4.1.1 and electrically in contact with the ring conductor 1 4.1.2. The outer circumference wall of the insulating outer ring 5.1 is respectively provided with a core wire connector 2 5.1.2 that is electrically connected to the ring conductor 2 5.1.1 at the position corresponding to the inner cavity of the long shell 5.2. The core wires at the inner end of the charging line 2 are electrically connected to the core wire connector 2 5.1.2. That is, the ring conductor 1 4.1.2 is always in electrical contact with the corresponding ring conductor 2 5.1.1, forming a rotating power supply structure, and realizing the electrical connection between the terminal of the charging pile cabinet 1 and the inner end of the charging line 2.

[0038] A curved block 5.1.5 is fixed to the outer wall of the insulating outer ring 5.1 at a position corresponding to the inner cavity of the long shell 5.2, and a curved clamp 5.1.6 is fixedly connected to the curved block 5.1.5 by bolts, and the curved clamp 5.1.6 and the curved block 5.1.5 form a clamp structure for fixing the inner end of the charging cable 2. That is, the clamp structure formed by the curved clamp 5.1.6 and the curved block 5.1.5 is used to fix the inner end sheath of the charging cable 2 to avoid the problem of the core wire falling off from the core wire connector 2 5.1.2 when the charging gun 3 pulls the charging cable 2 outward.

[0039] The top and bottom surfaces of the long shell 5.2 are respectively provided with rectangular grooves 5.2.1 that are slidably engaged with the top and bottom ends of the central axis of the groove wheel 5.5 in a direction perpendicular to its axis. The elastic support member 5.4 includes a strip shell 5.4.1 fixed to the top and bottom surfaces of the long shell 5.2 and corresponding to the rectangular groove 5.2.1, a slider 5.4.3 slidably engaged in the inner cavity of the strip shell 5.4.1, and a spring supported between the slider 5.4.3 and one end surface of the inner cavity of the strip shell 5.4.1. A strip groove 5.4.1.1 that is slidably engaged with the end of the central axis of the groove wheel 5.5 is opened near the rectangular groove 5.2.1 in the strip shell 5.4.1.

[0040] In summary, when in use, the parking spaces are distributed in a ring around the periphery of the charging pile. When it is necessary to charge the new energy vehicles parked in the parking spaces within the range, the entire rotating support mechanism 5 is swung by the long shell 5.2 so that the outer end of the long shell 5.2 corresponds to the vehicle to be charged;

[0041] Pull out the charging gun 3 from the socket 5.3, and then use the charging gun 3 to pull the charging cable 2 outward. When the charging cable 2 is pulled outward, each groove wheel 5.5 moves toward the center line of the long shell 5.2, so that the spring 5.4.4 is gradually compressed. Until the charging gun 3 can be inserted into the charging socket of the vehicle to be charged, stop pulling the charging cable 2. At this time, the charging cable 2 is located near the middle of the inner cavity of the long shell 5.2 and tends to be straightened.

[0042] After charging is completed, the charging gun 3 is pulled out from the charging socket. Due to the rebound effect of the spring 5.4.4, the groove wheel 5.5 tends to move to both sides of the long shell 5.2. After the charging line 2 is relaxed, the groove wheel 5.5 will push the charging line 2 to both sides, so that the charging line 2 is re-arranged in a zigzag shape in the inner cavity of the long shell 5.2 to realize the storage of the charging line 2. Finally, the charging gun 3 can be reinserted into the socket 5.3.

[0043] Due to the action of the elastic support member 5.4, after the charging cable 2 is pulled through the charging gun 3 and the charging gun 3 is inserted into the charging socket of the new energy vehicle, a pulling force will be generated on the charging gun 3. In order to prevent the charging gun 3 from being pulled back and falling off from the charging socket, a locking mechanism 6 is provided at the outer end of the long shell 5.2 for preventing the pulled-out charging cable 2 from retracting. The locking mechanism 6 includes a cylindrical shell 6.5 fixed on the top surface of the outer end of the long shell 5.2, a curved base 6.1 fixed on the bottom surface of the outer end of the inner cavity of the long shell 5.2, a curved pressure plate 6.2 arranged on the upper side of the curved base 6.1, a telescopic cylinder 6.4 whose piston rod bottom end is fixed to the middle of the top surface of the curved pressure plate 6.2 and sleeved in the inner cavity of the cylindrical shell 6.5, and a guide rod 6.3 whose bottom end is vertically fixed to the top surfaces of both sides of the curved base 6.1 and slidably sleeved with both sides of the bottom of the curved pressure plate 6.2. A circular hole 5.2.2 slidably sleeved with the piston rod of the telescopic cylinder 6.4 is provided on the top surface of the outer end of the long shell 5.2 corresponding to the position of the cylindrical shell 6.5. That is, when the charging line 2 is pulled to the charging socket position of the new energy vehicle through the charging gun 3, the telescopic cylinder 6.4 extends the piston rod to push the curved pressure plate 6.2 downward, so that the curved pressure plate 6.2 moves downward under the guidance of the guide rod 6.3 to achieve the locking of the charging line 2. In order to avoid interference when the long shells 5.2 swing, the height of the cylindrical shell 6.5 is smaller than the height difference between two adjacent long shells 5.2.

[0044] In order to facilitate the assembly of the elastic support member 5.4, wing plates 5.4.1.2 are respectively fixed on both sides of the strip housing 5.4.1 close to the top and bottom surfaces of the long housing 5.2, and the wing plates 5.4.1.2 are fixed to the corresponding top and bottom surfaces of the long housing 5.2 by screws.

[0045] In order to improve the smooth movement of the groove wheel 5.5 in the direction perpendicular to the axis of the long shell 5.2, the inner cavity of the strip shell 5.4.1 is away from the spring 5.4.4. One end of the guide wheel 5.4.2 is rollingly mounted on the card, and the side wall of the slider 5.4.3 away from the spring 5.4.4 is abutted against the outer peripheral wall of the guide wheel 5.4.2. A column cavity 5.4.2.1 is provided in the center of the guide wheel 5.4.2, and the top and bottom ends of the central axis of the groove wheel 5.5 are respectively fixedly docked with plug-in columns 5.5.1 that are sleeved and matched with the column cavity 5.4.2.1.

[0046] In order to improve the sealing effect between adjacent insulating outer rings 5.1, an annular groove 5.1.4 is fixed near the outer edge of the top surface of the insulating outer ring 5.1, and an annular protrusion 5.1.3 rotatably engaged with the annular groove 5.1.4 is provided near the outer edge of the bottom surface of the insulating outer ring 5.1.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ring-shaped multi-charging station charging pile, comprising a charging pile cabinet (1), a plurality of charging cables (2), and charging guns (3) electrically connected to the outer ends of the charging cables (2), characterized in that: Also includes: A ring-shaped power supply mechanism (4), the ring-shaped power supply mechanism (4) comprising a plurality of insulating inner rings (4.1) stacked on the middle of the top surface of the charging pile cabinet (1) and a top cover (4.2) covering the top of the insulating inner rings (4.1); A rotating support mechanism (5), the rotating support mechanism (5) comprising an insulating outer ring (5.1) rotatably sleeved on the outside of the insulating inner ring (4.1), a long shell (5.2) fixed radially to the outer peripheral wall of the insulating outer ring (5.1), a socket (5.3) fixed to the inner cavity of the long shell (5.2) close to the outer end and used for inserting the charging gun (3), a plurality of groove wheels (5.5) arranged in a zigzag pattern in the inner cavity of the long shell (5.2), and an elastic support member (5.4) provided on the top and bottom surfaces of the long shell (5.2) and used for elastically supporting the top and bottom ends of the central axis of the groove wheel (5.5) in a direction perpendicular to the axis of the long shell (5.2), the charging line (2) sequentially passes around the plurality of groove wheels (5.5), and the inner end of the charging line (2) is fixed to the outer peripheral wall of the insulating outer ring (5.1); A rotating power supply structure is provided between the insulating outer ring (5.1) and the insulating inner ring (4.1), and the connection terminal of the charging pile cabinet (1) and the core wire at the inner end of the charging cable (2) are respectively electrically connected to the rotating power supply mechanism.

2. A ring-shaped multi-charging station charging pile according to claim 1, characterized in that: The outer peripheral wall of the insulating inner ring (4.1) is vertically provided with a plurality of annular grooves (4.1.1), the inner cavities of the annular grooves (4.1.1) are respectively fixedly mounted with annular conductors 1 (4.1.2), the inner peripheral wall of the insulating inner ring (4.1) is provided with core wire connectors 1 (4.1.3) respectively electrically connected to the corresponding annular conductors 1 (4.1.2), the core wire connectors 1 (4.1.3) are electrically connected to the wiring terminals of the charging pile cabinet (1), and the inner peripheral wall of the insulating outer ring (5.1) is provided with a plurality of annular grooves (4.1.1) respectively fixedly mounted with annular conductors 1 (4.1.2), the inner peripheral wall of the insulating inner ring (4.1) is provided with core wire connectors 1 (4.1.3) respectively ...) respectively. The wall is fixed with an annular conductor 2 (5.1.1) which is rotatably engaged with the annular groove (4.1.1) and electrically contacted with the annular conductor 1 (4.1.2) respectively; the outer peripheral wall of the insulating outer ring (5.1) is respectively provided with core wire connectors 2 (5.1.2) which are electrically connected to the annular conductor 2 (5.1.1) one by one at positions corresponding to the inner cavity of the long shell (5.2); the core wires at the inner ends of the charging cable (2) are respectively electrically connected to the core wire connectors 2 (5.1.2).

3. The annular multi-charging station charging pile according to claim 1, characterized in that: A curved surface block (5.1.5) is fixed to the outer peripheral wall of the insulating outer ring (5.1) at a position corresponding to the inner cavity of the long shell (5.2); a curved surface clamping plate (5.1.6) is fixedly connected to the curved surface block (5.1.5) by bolts; the curved surface clamping plate (5.1.6) and the curved surface block (5.1.5) form a clamp structure for fixing the inner end of the charging cable (2).

4. The annular multi-charging station charging pile according to claim 1, characterized in that: The insulating inner ring (4.1) is evenly provided with a plurality of vertical through holes (4.1.4) along the circumference, and the top surface of the charging pile cabinet (1) is vertically fixed with a plurality of fixing rods (4.3) respectively sleeved with the through holes (4.1.4), and the top of the fixing rod (4.3) is provided with an external thread (4.3.1), and the external thread (4.3.1) is threadedly sleeved with a clamping nut (4.4), and the bottom surface of the top cover (4.2) is provided with a sleeve ring (4.2.1) that is sleeved with the inner cavity of the insulating inner ring (4.1) at the top.

5. The annular multi-charging station charging pile according to claim 1, characterized in that: The top and bottom surfaces of the long shell (5.2) are respectively provided with rectangular grooves (5.2.1) in a direction perpendicular to the axis thereof, which are slidably engaged with the top and bottom ends of the central axis of the groove wheel (5.5); the elastic support member (5.4) comprises a strip shell (5.4.1) fixed to the top and bottom surfaces of the long shell (5.2) and corresponding to the rectangular groove (5.2.1); a slider (5.4.3) slidably engaged in the inner cavity of the strip shell (5.4.1); and a spring supported between the slider (5.4.3) and one end surface of the inner cavity of the strip shell (5.4.1); and a strip groove (5.4.1.1) is provided in the strip shell (5.4.1) near the rectangular groove (5.2.1) and is slidably engaged with the end of the central axis of the groove wheel (5.5).

6. The annular multi-charging station charging pile according to claim 5, characterized in that: Wing plates (5.4.1.2) are respectively fixed on both sides of the strip-shaped housing (5.4.1) close to the top and bottom surfaces of the long housing (5.2), and the wing plates (5.4.1.2) are fixed to the corresponding top and bottom surfaces of the long housing (5.2) by means of screws.

7. The annular multi-charging station charging pile according to claim 5, characterized in that: A guide wheel (5.4.2) is rollingly mounted on one end of the inner cavity of the strip housing (5.4.1) away from the spring (5.4.4); a side wall of the slider (5.4.3) away from the spring (5.4.4) is pressed against the outer peripheral wall of the guide wheel (5.4.2); a column cavity (5.4.2.1) is provided at the center of the guide wheel (5.4.2); and plug-in columns (5.5.1) that are sleeved and matched with the column cavity (5.4.2.1) are fixedly connected to the top and bottom ends of the central axis of the groove wheel (5.5).

8. The annular multi-charging station charging pile according to claim 1, characterized in that: An annular groove (5.1.4) is fixed on the top surface of the insulating outer ring (5.1) near the outer edge, and an annular protrusion (5.1.3) rotatably engaging and matching with the annular groove (5.1.4) is provided on the bottom surface of the insulating outer ring (5.1) near the outer edge.

9. The annular multi-charging station charging pile according to claim 1, characterized in that: The outer end of the long housing (5.2) is provided with a locking mechanism (6) for preventing the pulled-out charging cable (2) from retracting.

10. The annular multi-charging station charging pile according to claim 9, characterized in that: The locking mechanism (6) comprises a cylindrical shell (6.5) fixed on the top surface of the outer end of the long shell (5.2), a curved base (6.1) fixed on the bottom surface of the outer end of the inner cavity of the long shell (5.2), a curved pressure plate (6.2) arranged on the upper side of the curved base (6.1), a telescopic cylinder (6.4) whose bottom end of the piston rod is fixed to the middle of the top surface of the curved pressure plate (6.2) and is sleeved in the inner cavity of the cylindrical shell (6.5), and a guide rod (6.3) whose bottom end is vertically fixed to the top surfaces on both sides of the curved base (6.1) and is slidably sleeved on both sides of the bottom of the curved pressure plate (6.2). A circular hole (5.2.2) slidably sleeved with the piston rod of the telescopic cylinder (6.4) is provided on the top surface of the outer end of the long shell (5.2) corresponding to the position of the cylindrical shell (6.5) and is slidably sleeved with the piston rod of the telescopic cylinder (6.4).

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