Underground automatic recovery device for power line of automobile charging pile

Abstract

The utility model provides an underground automatic recovery device for a power line of an automobile charging pile, and the device comprises a buried box body which is provided with an opening at the top; the telescopic element is vertically arranged in the buried box body, and the lower end of the telescopic element is fixedly connected with the inner bottom of the buried box body; the edge of the protection plate is slidably connected with the inner wall of the buried box, and the top end of the telescopic element is fixedly connected with the bottom of the protection plate; the take-up and pay-off device is arranged at the top of the protection plate; and the box cover is arranged above the take-up and pay-off device and connected with the protection plate through a supporting column, and the connecting line penetrates through the box cover and extends out of the box body. The take-up and pay-off device is arranged in the buried box body, the buried box body is sealed by the box cover, the power line is protected, and the power line is prevented from being exposed to the sun and rain for a long time. And during charging, the protection plate seals the opening in the top end of the buried box body, so that the interior of the buried box body can be protected. And after charging is completed, the driving mechanism drives the winding roller to rotate, the power line is wound on the winding roller, and convenience is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicle charging, in particular to an underground automatic recovery device for the power cord of an automobile charging pile. Background Art

[0002] With the development of new energy vehicles, the number of new energy vehicles is increasing, and automobile charging piles can be seen everywhere. New energy vehicles need to use a charging gun for charging, and the charging gun is connected to the charging pile through a power cord. To improve the charging rate, the power cord for new energy vehicle charging is usually thick and heavy, and it is not easy to put it back to its original position after charging, which is not conducive to use. Moreover, the power cord is exposed to sunlight and rain for a long time, accelerating the aging of the outer skin of the power cord.

[0003] Therefore, it is necessary to design an underground automatic recovery device for the power cord of an automobile charging pile to solve the above technical problems. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problems existing in the prior art and provide an underground automatic recovery device for the power cord of an automobile charging pile.

[0005] To achieve the above object, the utility model is realized through the following technical solutions:

[0006] An underground automatic recovery device for the power cord of an automobile charging pile, comprising:

[0007] A buried box body with an opening at the top;

[0008] A telescopic element, vertically arranged in the buried box body and fixedly connected to the inner bottom of the buried box body at the lower end;

[0009] A protective plate, the edge of which is slidably connected to the inner wall of the buried box body, and the top end of the telescopic element is fixedly connected to the bottom of the protective plate;

[0010] A wire winding and releasing device, including a support arranged on the top of the protective plate, a wire winding roller rotatably connected to the support, a conductive slip ring arranged between the support and the wire winding roller, and a driving mechanism for driving the wire winding roller. The rotor of the conductive slip ring is fixedly connected to the wire winding roller, the stator is fixedly connected to the support, a power cord is wound around the wire winding roller, one end of the power cord is connected with a charging gun, the other end is connected with the rotor of the conductive slip ring, and the stator of the conductive slip ring is connected with a connecting wire;

[0011] A box cover, arranged above the wire winding and releasing device and connected to the protective plate through a support column, and the connecting wire penetrates through the box cover and extends to the outside of the box body.

[0012] Preferably, a first sealing ring is provided at the top edge of the buried box body, and the bottom of the box cover can abut against the first sealing ring.

[0013] Preferably, the telescopic element is an electric push rod or a hydraulic cylinder.

[0014] Preferably, a second sealing ring is provided at the edge of the protection plate, and the second sealing ring is slidably connected to the inner wall of the buried box body.

[0015] Preferably, the driving mechanism includes a motor fixed on the top of the protection plate, the output shaft of the motor is connected with a driving gear, one end of the wire winding roller is connected with a driven gear, and the driving gear meshes with the driven gear.

[0016] Preferably, retaining discs are respectively provided at both ends of the wire winding roller, and the rotor of the conductive slip ring is fixedly connected to one of the retaining discs.

[0017] Preferably, one end of the power cord away from the charging gun penetrates through the retaining disc and is connected to the rotor of the conductive slip ring.

[0018] Preferably, a collar is provided on the top of the protection plate, and the power cord passes through the collar movably.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] When the underground automatic recovery device for the power cord of the vehicle charger of the present utility model is not in use, the wire winding and unwinding device is arranged in the buried box body, and the box cover is closed on the top of the buried box body to seal the buried box body and protect the power cord from being exposed to sunlight and rain for a long time. During the charging process, the protection plate closes the opening at the top of the buried box body, which can protect the inside of the buried box body and prevent sundries from entering the buried box body. After charging is completed, the driving mechanism drives the wire winding roller to rotate, and winds the power cord on the wire winding roller, which is relatively convenient. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of one state of the present utility model;

[0022] Figure 2 is a schematic structural diagram of another state of the present utility model;

[0023] Figure 3 is Figure 2 the enlarged structural view of part A in

[0024] Description of the Reference Numerals

[0025] 1 - Underground box, 2 - Telescopic element, 3 - Protection plate, 4 - Support, 5 - Wire winding roller, 6 - Conductive slip ring, 7 - Power cord, 8 - Charging gun, 9 - Connecting wire, 10 - Box cover, 11 - Support column, 12 - First sealing ring, 13 - Second sealing ring, 14 - Motor, 15 - Driving gear, 16 - Driven gear, 17 - Stop disc, 18 - Collar. Detailed implementation manner

[0026] The following further elaborates on the present utility model in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by this application.

[0027] As Figures 1 to 3 shown, an underground automatic retracting device for the power cord 7 of an electric vehicle charging pile includes: an underground box 1 with an open top, and the underground box 1 can be set as a rectangular box, and the underground type does not occupy the above-ground space. A telescopic element 2 is vertically arranged inside the underground box 1 and is fixedly connected to the inner bottom of the underground box 1 at the lower end. The telescopic element 2 can be selected from an electric push rod or a hydraulic cylinder. A protection plate 3 has its edge slidably connected to the inner wall of the underground box 1, and the top end of the telescopic element 2 is fixedly connected to the bottom of the protection plate 3. A wire winding and unwinding device includes a support 4 arranged on the top of the protection plate 3, a wire winding roller 5 rotatably connected to the support 4, a conductive slip ring 6 arranged between the support 4 and the wire winding roller 5, and a driving mechanism for driving the wire winding roller 5. The rotor of the conductive slip ring 6 is fixedly connected to the wire winding roller 5, the stator is fixedly connected to the support 4, the power cord 7 is wound around the wire winding roller 5, one end of the power cord 7 is connected to a charging gun 8, the other end is connected to the rotor of the conductive slip ring 6, and the stator of the conductive slip ring 6 is connected to a connecting wire 9. A box cover 10 is arranged above the wire winding and unwinding device and is connected to the protection plate 3 through a support column 11. The connecting wire 9 passes through the box cover 10 and extends to the outside of the box.

[0028] In the underground automatic retracting device for the power cord 7 of the electric vehicle charging pile in this embodiment, the vertically arranged telescopic element 2 can drive the protection plate 3, the wire winding and unwinding device, and the box cover 10 to move up and down. The connecting wire 9 in the wire winding and unwinding device is used to connect to the charging pile. Since the connecting wire 9 is fixed to the box cover 10, the connecting wire 9 will be driven during the up and down movement of the box cover 10. Therefore, a certain safe length needs to be reserved for the connecting wire 9.

[0029] The underground automatic retraction device for the power cord 7 of the vehicle charging pile in this embodiment has a wire winding and unwinding device disposed in the buried box body 1, and the box cover 10 is closed on the top end of the buried box body 1 to enclose the buried box body 1 and protect the power cord 7 from being exposed to sunlight and rain for a long time. When charging is required, the vertically arranged telescopic element 2 extends to drive the protective plate 3, the wire winding and unwinding device, and the box cover 10 to rise until the protective plate 3 closes the opening at the top end of the buried box body 1. At this time, the protective plate 3 can protect the interior of the buried box body 1 and prevent sundries from entering the buried box body 1. Then, the driving mechanism drives the wire winding roller 5 to rotate to release the power cord 7, and the user can charge the vehicle through the charging gun 8. After charging is completed, the driving mechanism drives the wire winding roller 5 to rotate in the reverse direction to wind the power cord 7 around the wire winding roller 5, which is relatively convenient. After the wire winding is completed, the telescopic mechanism drives the protective plate 3, the wire winding and unwinding device, and the box cover 10 to descend until the box cover 10 is closed on the top end of the buried box body 1.

[0030] In some embodiments, a first sealing ring 12 is provided at the edge of the top end of the buried box body 1, and the bottom of the box cover 10 can abut against the first sealing ring 12. By providing the first sealing ring 12 between the ground box body and the box cover 10, when the underground automatic retraction device for the power cord 7 of the vehicle charging pile is not in use, rainwater, dust, etc. can be prevented from entering the interior of the buried box body 1.

[0031] In some embodiments, a second sealing ring 13 is provided at the edge of the protective plate 3, and the second sealing ring 13 is slidably connected to the inner wall of the buried box body 1. By providing the second sealing ring 13 between the ground box body and the box cover 10, when the underground automatic retraction device for the power cord 7 of the vehicle charging pile is in use, rainwater, dust, etc. can be prevented from entering the interior of the buried box body 1, and normal charging can be carried out on rainy days without worrying about rainwater entering the buried box body 1.

[0032] In some embodiments, the driving mechanism includes a motor 14 fixed to the top of the protective plate 3, an output shaft of the motor 14 is connected with a driving gear 15, one end of the wire winding roller 5 is connected with a driven gear 16, and the driving gear 15 meshes with the driven gear 16. The motor 14 drives the driving gear 15, and through the cooperation of the driving gear 15 and the driven gear 16, the wire winding roller 5 is driven.

[0033] In some embodiments, retaining discs 17 are respectively provided at both ends of the wire winding roller 5, and a rotor of the conductive slip ring 6 is fixedly connected to one of the retaining discs 17. One end of the power cord 7 away from the charging gun 8 passes through the retaining disc 17 and is connected to the rotor of the conductive slip ring 6.

[0034] In some embodiments, a collar 18 is provided at the top of the protective plate, and the power cord 7 passes through the collar 18 movably, so that the wire outlet position is fixed. Also, during the process of winding up the wire, the friction between the power cord 7 and the collar 18 can also make the power cord 7 wind up more tightly.

Claims

1. An automatic underground recovery device for the power cord of a car charging pile, characterized in that: include: An underground box body, wherein the top of the underground box body is open; A telescopic element is vertically arranged in the underground box, and the lower end is fixedly connected to the bottom of the underground box; A protective plate, the edge of which is slidably connected to the inner wall of the buried box, and the top of the telescopic element is fixedly connected to the bottom of the protective plate; A wire-reeling and -unreeling device, comprising a support arranged on the top of the protective plate, a wire-reeling roller rotatably connected to the support, a conductive slip ring arranged between the support and the wire-reeling roller, and a driving mechanism for driving the wire-reeling roller, wherein the rotor of the conductive slip ring is fixedly connected to the wire-reeling roller, and the stator is fixedly connected to the support, a power cord is wound around the wire-reeling roller, one end of the power cord is connected to a charging gun, and the other end is connected to the rotor of the conductive slip ring, and the stator of the conductive slip ring is connected to a connecting wire; The box cover is arranged above the wire-retracting and -releasing device and is connected to the protective plate through a supporting column. The connecting wire passes through the box cover and extends to the outside of the box body.

2. According to claim 1, the automatic underground recovery device for the power cord of a car charging pile is characterized by: A first sealing ring is disposed on the top edge of the underground box body, and the bottom of the box cover can abut against the first sealing ring.

3. The underground automatic recovery device for the power cord of a car charging pile according to claim 1 is characterized in that: The telescopic element is an electric push rod or a hydraulic cylinder.

4. The underground automatic recovery device for the power cord of a car charging pile according to claim 1 is characterized in that: A second sealing ring is provided at the edge of the protective plate, and the second sealing ring is slidably connected to the inner wall of the buried box.

5. The underground automatic recovery device for the power cord of a car charging pile according to claim 1 is characterized by: The driving mechanism comprises a motor fixed on the top of the protective plate, the output shaft of the motor is connected with a driving gear, one end of the winding roller is connected with a driven gear, and the driving gear is meshed with the driven gear.

6. The underground automatic recovery device for the power cord of a car charging pile according to claim 1 is characterized by: Baffles are respectively provided at both ends of the winding roller, and the rotor of the conductive slip ring is fixedly connected to one of the baffles.

7. The underground automatic recovery device for the power cord of a car charging pile according to claim 6, characterized in that: One end of the power line away from the charging gun passes through the baffle and is connected to the rotor of the conductive slip ring.

8. The underground automatic recovery device for the power cord of a car charging pile according to claim 1 is characterized by: A ring is arranged on the top of the protection plate, and the power cord movably passes through the ring.

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