Safety protection type new energy automobile charging pile

Abstract

The invention discloses a safety protection type new energy automobile charging pile which comprises a mounting frame and a charging pile body mounted on the mounting frame, and the charging pile body is connected with a charging gun through a charging wire. The interior of the protection box is hollow, and the bottom of the protection box is provided with an opening; the bottom plate is used for sealing the opening in the bottom of the protection box; the protection box is installed on the installation frame, the bottom plate is movably installed on the protection box, and the protection box and the bottom plate are both made of heat insulation flame retardant materials. When spontaneous combustion of the new energy automobile occurs, the self-triggering unit can automatically convey the charging pile body into the protection box arranged at the high position, the protection box is sealed, the charging pile body is made to be away from a fire source and isolated from the outside by the protection box at the same time, and the good protection effect on the charging pile body is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of charging piles, and in particular to a safety protection type charging pile for new energy vehicles. Background Art

[0002] The main function of a charging pile is to provide energy for electric vehicles, similar to the gas pump in a gas station. It can convert AC or DC power into the voltage and current required by electric vehicles, thereby realizing the charging of electric vehicles. Charging piles are usually installed in public buildings (such as public buildings, shopping malls, public parking lots, etc.) and residential parking lots or charging stations to provide charging services for various models of electric vehicles.

[0003] There are various installation conditions for charging piles, and you can choose according to different needs. Vertical charging piles do not need to be against the wall, and are suitable for outdoor parking spaces or community parking spaces; while wall-mounted charging piles must be fixed to the wall and are suitable for indoor and underground parking spaces.

[0004] New energy vehicles often catch fire when parking in indoor and underground parking spaces. The high-temperature flames and smoke generated by the spontaneous combustion of new energy vehicles may directly burn the outer shell, circuit boards and internal components of the wall-mounted charging pile, causing the charging pile to be unable to work normally and be damaged. Since the charging pile is connected to the municipal power system, the burned charging pile is prone to leakage, further increasing the risk. Therefore, this application provides a safety protection type new energy vehicle charging pile to meet the needs. Summary of the invention

[0005] The purpose of this application is to provide a safety protection type new energy vehicle charging pile, which is used to solve the technical problem in the prior art that the wall-mounted charging pile will be damaged when the new energy vehicle spontaneously ignites.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a safety protection type new energy vehicle charging pile, comprising a mounting frame and a charging pile body mounted on the mounting frame, the charging pile body being connected to a charging gun via a charging wire, and further comprising a protection box with an opening at the bottom of the hollow interior, a bottom plate for sealing the opening at the bottom of the protection box, and a self-triggering unit; The protection box is installed on the mounting frame, the bottom plate is movably installed on the protection box, and the protection box and the bottom plate are both made of heat-insulating and flame-retardant materials; When the self-triggering unit detects that the new energy vehicle in the parking space is spontaneously ignited, it will automatically trigger and drive the charging pile body to move to the inner cavity of the protection box and then drive the bottom plate to seal the bottom opening of the protection box.

[0007] As a preferred implementation in this embodiment, the self-triggering unit includes a steel wire rope vertically passing through the protection box, a weight, two movable telescopic rods rotatably arranged on both sides of the protection box, a plurality of fixed guide wheels and a plurality of movable guide wheels installed at intervals on the inner wall of the protection box, and a heat-conducting cylinder fixed on the mounting frame; The mounting frame includes two side panels, and the two side panels are fixedly connected by two sets of transverse panels; The lower ends of the two movable telescopic rods are rotatably connected to the upper end of the bottom plate, a movement cavity is provided between the protection box and the mounting frame, the bottom plate is slidably engaged in the movement cavity, a damping sleeve is provided at the rotation of the two movable telescopic rods, and an opening and closing gear is fixed on the end of the rotating shaft of the two movable telescopic rods located in the protection box; The two ends of the steel wire rope are respectively connected to the limit plate and the weight, the limit plate is slidably arranged on the mounting frame, the charging pile body is installed at the lower end of the limit plate, and the limit plate is provided with an opening and closing gear plate adapted to the two opening and closing gears; The charging pile body is connected to the lower end of the transmission wire, the upper end of the transmission wire is sequentially assembled on a plurality of fixed guide wheels and a plurality of movable guide wheels and passes through the protection box to be connected to the mains system, the plurality of fixed guide wheels are rotatably connected to the protection box, the plurality of movable guide wheels are slidably engaged with the protection box, and the protection box is provided with a slide groove adapted to the movable guide wheel; An upper positioning rod is fixed to the upper end of the weight, a positioning hole is provided on the upper positioning rod, and the upper end of the upper positioning rod passes through the horizontal plate located above; The heat-conducting tube is connected to the inner cavity of the upper telescopic rod fixedly arranged on the mounting frame through the heat-insulating tube, and the inner cavity of the heat-conducting tube is filled with a low-boiling-point liquid; The output end of the upper telescopic rod is toothed with the rack through a transmission gear, and the transmission gear is rotatably set on the upper horizontal plate, and the rack is slidably clamped on the upper horizontal plate, a first positioning block is installed on the right side of the rack, and a guide inclined surface is provided at the lower end of the first positioning block, the right end of the first positioning block is plugged into the upper positioning hole, a sliding column is fixed to the left end of the first positioning block, and the left end of the sliding column is slidably set in the movable end cavity of the upper telescopic rod, and the movable end of the upper telescopic rod is connected to the left end of the first positioning block by a first connecting spring.

[0008] As a preferred implementation in this embodiment, it also includes an automatic reset unit, which automatically controls the charging pile body to be moved out of the protection box and restored to its original position when it is detected that the spontaneous combustion of the new energy vehicle has ended.

[0009] As a preferred implementation in this embodiment, the automatic reset unit includes a lower positioning rod installed at the lower end of the weight and having a positioning hole, a lower telescopic rod communicating with the inner cavity of the heat-conducting cylinder through a heat-insulating tube, and two rotating columns respectively rotatably arranged in the inner cavities of the two side plates; The lower telescopic rod is installed on the mounting frame, a second positioning block is arranged on the left side of the movable end of the lower telescopic rod, a sliding column is fixed to the right end of the second positioning block, and the right end of the sliding column is slidably arranged in the inner cavity of the movable end of the second positioning block, the second positioning block is connected to the movable end of the lower telescopic rod through a second connecting spring, and a guiding inclined surface is arranged on the upper end of the second positioning block; A groove is provided on the outer plane ends of the two rotating columns, and a first permanent magnet with a strip structure is installed in the groove. A driving shaft is provided above and below the rotating shaft of the rotating column, and a first bevel gear and a one-way gear are installed at both ends of the driving shaft respectively. A second bevel gear meshing with the first bevel gear is installed at both ends of the rotating shaft of the rotating column. The two groups of one-way gears located on the left or right side drive the driving shaft to rotate in opposite directions. An upper driving tooth plate and a lower driving tooth plate adapted to the corresponding one-way gears are installed on both side ends of the weight; Mounting blocks with mounting slopes are respectively installed on both side ends of the weight, and a second permanent magnet is installed on the mounting slope. The outer end of the second permanent magnet has the same magnetic pole as the outer end of the first permanent magnet.

[0010] As a preferred implementation manner in this embodiment, it also includes a winding unit, one end of which is installed on the mounting frame, and the other end is installed on the protective box, for winding the charging wire before the charging pile body enters the protective box.

[0011] As a preferred implementation in this embodiment, the winding unit includes a long tooth plate fixedly arranged at the bottom of the protection box and a winding shaft rotatably arranged in the inner cavity of the charging pile body; A winding wheel is installed on the winding shaft, the upper end of the charging wire passes through the axis of the winding shaft and is connected to the circuit board in the charging pile body through a conductive slip ring, and a winding gear adapted to the long tooth plate is fixed on the outer end of the winding shaft that passes through the charging pile body.

[0012] As a preferred implementation manner in this embodiment, an elastic buffer sleeve is fixed on the upper part of the steel wire rope, and the elastic buffer sleeve is a hollow structure with an open upper end and a closed lower end.

[0013] As a preferred implementation in this embodiment, multiple extrusion gaps of annular structures are arranged from top to bottom on the inner and outer walls of the elastic buffer sleeve.

[0014] In summary, the technical effects and advantages of the present invention are as follows: The present invention has a reasonable structure. When a new energy vehicle spontaneously ignites, the self-triggering unit can automatically transport the charging pile body to a protective box set at a high place, and seal the protective box, so that the charging pile body is away from the fire source and isolated from the outside world by the protective box, which has a good protective effect on the charging pile body. In the present invention, an automatic resetting unit is provided, and when the spontaneous combustion of the new energy vehicle ends, the charging pile body is automatically controlled to be moved out of the protective box and restored to its original position, and at the same time, the collision strength between heavy objects and other components can be effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Schematic diagram of partial split and enlarged structure; Figure 3 for Figure 2 The enlarged structural diagram at A in the middle; Figure 4 for Figure 1 Middle and rear view structure diagram; Figure 5 for Figure 4 The enlarged structural diagram at B in the middle; Figure 6 for Figure 4 Schematic diagram of partial and enlarged cross-section structure; Figure 7 for Figure 6 Schematic diagram of the structure of medium and heavy objects; Figure 8 It is a schematic diagram of the partial cross-section structure of the charging pile body; Fig. 9 It is a schematic diagram of the cross-sectional structure of the elastic buffer sleeve.

[0017] In the figure: 1, mounting frame; 101, side plate; 102, horizontal plate; 2, charging pile body; 3, limit plate; 4, charging gun; 5, charging wire; 6, transmission wire; 7, wire rope; 8, heavy object; 81, upper positioning rod; 82, lower positioning rod; 83, upper drive gear plate; 84, lower drive gear plate; 85, second permanent magnet; 9, protective box; 10, bottom plate; 11, movable telescopic rod; 12, opening and closing gear; 13, opening and closing gear plate; 14, moving guide wheel; 15, fixed guide wheel wheel; 16, extrusion gap; 17, upper telescopic rod; 18, transmission gear; 19, rack; 20, first connecting spring; 21, heat-conducting tube; 22, lower telescopic rod; 23, second connecting spring; 24, first positioning block; 25, second positioning block; 26, rotating column; 27, first permanent magnet; 28, driving shaft; 29, one-way gear; 30, winding shaft; 31, winding wheel; 32, conductive slip ring; 33, winding gear; 34, long tooth plate; 35, elastic buffer sleeve. DETAILED DESCRIPTION

[0018] 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.

[0019] Example: Reference Figure 1 A safety protection type new energy vehicle charging pile shown in the figure comprises a mounting frame 1 and a charging pile body 2 mounted on the mounting frame 1, a charging gun 4 is connected to the charging pile body 2 via a charging wire 5, and is characterized in that it also comprises a protection box 9 with an opening at the bottom of the hollow interior, a bottom plate 10 for sealing the bottom opening of the protection box 9, and a self-triggering unit; The protection box 9 is installed on the mounting frame 1, and the bottom plate 10 is movably installed on the protection box 9. The protection box 9 and the bottom plate 10 are both made of heat-insulating and flame-retardant materials; When the self-triggering unit detects that the new energy vehicle in the parking space is spontaneously ignited, it will automatically trigger and drive the charging pile body 2 to move to the inner cavity of the protection box 9 and then drive the bottom plate 10 to seal the bottom opening of the protection box 9.

[0020] When the new energy vehicle spontaneously ignites, the self-triggering unit starts and automatically transports the charging pile body 2 to the protection box 9, which can prevent the charging pile body 2 from being burned and has a good protective effect on the charging pile body 2.

[0021] As a preferred implementation in this embodiment, Figure 1-7As shown, the self-triggering unit includes a steel wire rope 7 vertically penetrating the protection box 9, a weight 8, two movable telescopic rods 11 rotatably arranged on both sides of the protection box 9, a plurality of fixed guide wheels 15 and a plurality of movable guide wheels 14 installed at intervals on the inner wall of the protection box 9, and a heat-conducting tube 21 fixed on the mounting frame 1; The mounting frame 1 includes two side panels 101, and the two side panels 101 are fixedly connected by two sets of transverse panels 102; The lower ends of the two movable telescopic rods 11 are rotatably connected to the upper end of the bottom plate 10. A movement cavity is provided between the protection box 9 and the mounting frame 1. The bottom plate 10 is slidably engaged in the movement cavity. A damping sleeve is provided at the rotation of the two movable telescopic rods 11. An opening and closing gear 12 is fixed to the end of the rotating shaft of the two movable telescopic rods 11 located in the protection box 9. The two ends of the steel wire rope 7 are connected to the limit plate 3 and the weight 8 respectively. The limit plate 3 is slidably arranged on the mounting frame 1. The charging pile body 2 is installed at the lower end of the limit plate 3. The limit plate 3 is provided with an opening and closing gear plate 13 adapted to the two opening and closing gears 12; The charging pile body 2 is connected to the lower end of the transmission wire 6, and the upper end of the transmission wire 6 is sequentially assembled on a plurality of fixed guide wheels 15 and a plurality of movable guide wheels 14 and penetrates the protection box 9 to be connected to the mains system. The plurality of fixed guide wheels 15 are rotatably connected to the protection box 9, and the plurality of movable guide wheels 14 are slidably engaged with the protection box 9. The protection box 9 is provided with a slide groove adapted to the movable guide wheel 14; An upper positioning rod 81 is fixed to the upper end of the weight 8. A positioning hole is provided on the upper positioning rod 81. The upper end of the upper positioning rod 81 passes through the upper horizontal plate 102. The heat-conducting tube 21 is connected to the inner cavity of the upper telescopic rod 17 fixedly arranged on the mounting frame 1 through the heat-insulating tube, and the inner cavity of the heat-conducting tube 21 is filled with a low-boiling-point liquid; The output end of the upper telescopic rod 17 is gear-connected with the rack 19 through a transmission gear 18, and the transmission gear 18 is rotatably set on the upper horizontal plate 102, and the rack 19 is slidably connected to the upper horizontal plate 102. A first positioning block 24 is installed on the right side of the rack 19, and a guide slope is provided at the lower end of the first positioning block 24. The right end of the first positioning block 24 is plugged into the upper positioning hole, and a sliding column is fixed to the left end of the first positioning block 24, and the left end of the sliding column is slidably set in the movable end cavity of the upper telescopic rod 17. The movable end of the upper telescopic rod 17 is connected to the left end of the first positioning block 24 through a first connecting spring 20.

[0022] At the beginning, the first positioning block 24 is plugged into the upper positioning rod 81 on the weight 8. At this time, the weight 8 cannot move downward, and the weight 8 is located above the charging pile body 2. When the new energy vehicle spontaneously ignites, the ambient temperature rises and heats the heat-conducting tube 21 (made of heat-conducting metal material). The low-boiling point liquid inside (the boiling point temperature is controlled between 60 degrees Celsius and 80 degrees Celsius as required) absorbs heat and vaporizes, and pushes the active end of the upper telescopic rod 17 to move outward, and the rack 19 moves away from the upper positioning rod 81 through the transmission gear 18, thereby releasing the first positioning block 24 from the upper positioning rod 81. Then, at this time, the heavy object 8 (whose weight is greater than the weight of the charging pile body 2, the weight of the steel wire rope 7 and the sum of the weights of the multiple movable guide wheels 14) overcomes the resistance and moves downward, on the contrary, the charging pile body 2 will move upward, and finally move into the protection box 9 (at this time, the heavy object 8 moves to the horizontal plate 102 arranged below), and in this process, the opening and closing tooth plate 13 will be engaged with the opening and closing gear 12 and drive the movable telescopic rod 11 to rotate, so that the bottom plate 10 seals the opening at the bottom of the protection box 9. After being completely sealed, the opening and closing tooth plate 12 is meshed and separated from the opening and closing gear 13 and continues to move upward for a distance before stopping; The protection box 9 is set at a high place, and the charging pile body 2 located at a low place can automatically enter the protection box 9 set at a high place, so that the charging pile body 2 is away from the fire source and is isolated from the outside world by the protection box 9, which has a good protection effect on the charging pile body 2; When the charging pile body 2 moves upward, the multiple movable guide wheels 14 will move downward by their own gravity, so that the power transmission wire 6 is stored in the protection box 9; After the fire is over, the low-boiling-point liquid in the heat-conducting tube 21 is liquefied, and the components return to their original positions. When resetting at this time, the weight 8 can be manually lifted and moved upward. At this time, the charging pile body 2 moves downward due to its own gravity, and the opening and closing gear plate 12 makes the opening and closing gear 13 rotate in the opposite direction, thereby causing the bottom plate 10 to move outward, releasing the seal on the bottom of the protective box 9, allowing the charging pile body 2 to move out of the protective box 9 and finally return to its original position, and the upper positioning rod 81 will pass through the through hole set on the upper horizontal plate 102 and form a liquid-adding contact with the guide inclined surface at the lower end of the first positioning block 24, and finally make the first positioning block 24 and the upper positioning rod 81 form a plug-in connection to position the weight 8.

[0023] It should be noted that: 1. Elastic buffer pads are provided on the upper end of the lower horizontal plate 102 and the lower end of the upper horizontal plate 102 for collision buffering; 2. The portion of the power transmission wire 6 located outside the protective box 9 can be protected by a protective tube made of heat-insulating material; 3. The outer surface of the bottom plate 10 is wrapped with a high-temperature resistant elastic layer to further improve the sealing effect.

[0024] As a preferred implementation in this embodiment, it also includes an automatic resetting unit, which automatically controls the charging pile body 2 to be moved out of the protection box 9 and restored to its original position when it is detected that the spontaneous combustion of the new energy vehicle has ended.

[0025] As a preferred implementation in this embodiment, Figure 2-7 As shown, the automatic reset unit includes a lower positioning rod 82 installed at the lower end of the weight 8 and having a positioning hole, a lower telescopic rod 22 communicating with the inner cavity of the heat-conducting tube 21 through a heat-insulating tube, and two rotating columns 26 respectively rotatably arranged in the inner cavities of the two side plates 101; The lower telescopic rod 22 is mounted on the mounting frame 1, and a second positioning block 25 is arranged on the left side of the movable end of the lower telescopic rod 22, a sliding column is fixed to the right end of the second positioning block 25, and the right end of the sliding column is slidably arranged in the inner cavity of the movable end of the second positioning block 25, the second positioning block 25 is connected to the movable end of the lower telescopic rod 22 by a second connecting spring 23, and a guiding inclined surface is arranged on the upper end of the second positioning block 25; A groove is provided on the outer plane end of the two rotating columns 26, and a first permanent magnet 27 of a strip structure is installed in the groove. A driving shaft 28 is provided above and below the rotating shaft of the rotating column 26, and a first bevel gear and a one-way gear 29 are respectively installed at both ends of the driving shaft 28. A second bevel gear meshing with the first bevel gear is installed at both ends of the rotating shaft of the rotating column 26. The two sets of one-way gears 29 located on the left or right side drive the driving shaft 28 to rotate in opposite directions. An upper driving tooth plate 83 and a lower driving tooth plate 84 adapted to the corresponding one-way gear 29 are installed on both side ends of the weight 8. Mounting blocks with mounting slopes are respectively mounted on both side ends of the weight 8 , and a second permanent magnet 85 is mounted on the mounting slopes. The outer end of the second permanent magnet 85 has the same magnetic pole as the outer end of the first permanent magnet 27 .

[0026] An automatic reset unit is provided to facilitate the automatic restoration of the charging pile body 2 to its original position after the spontaneous combustion ends; When the automobile starts to self-ignite and the ambient temperature rises, the low-boiling-point liquid in the heat-conducting tube 21 absorbs heat and vaporizes, causing the movable ends of the upper telescopic rod 17 and the lower telescopic rod 22 to move outward. As the weight 8 moves downward (releasing the connection between the first positioning block 24 and the upper positioning rod 81), the upper drive tooth plate 83 disposed at its side end and located above moves downward and engages with the one-way gear 29 disposed above, but does not cause the drive shaft 28 disposed above to rotate. The weight 8 continues to move downward, causing the lower drive tooth plate 83 disposed below to engage with the one-way gear 29 disposed below. At this time, the drive shaft 28 disposed below is driven by the gear. The movable rotating column 26 rotates 180° (at the beginning, the first permanent magnet 27 faces away from the second permanent magnet 85) and makes the first permanent magnet 27 face the second permanent magnet 85. At this time, the lower driving gear plate 83 is separated from the one-way gear 29. The magnetic force generated by the first permanent magnet 27 and the second permanent magnet 85 arranged on both sides exerts an upward force on the weight 8, which can slow down the weight 8. At the same time, the weight 8 will form an extrusion contact with the guide inclined surface on the second positioning block 25 under the action of its own gravity and inertia, and finally complete the connection between the second positioning block 25 and the lower positioning rod 83. At this time, the weight 8 is positioned at the bottom; After the spontaneous combustion of the car ends and the ambient temperature returns to normal, the low-boiling point liquid in the heat-conducting tube 21 is liquefied, the air pressure decreases, and the movable ends of the upper telescopic rod 17 and the lower telescopic rod 22 move inward and return to their original positions. At this time, the second positioning block 25 is released from the plugging with the lower positioning rod 82. At this time, the weight 8 moves upward under the action of the upward component force and the gravity of the charging pile body 2. The lower driving plate 84 arranged below cannot drive the lower driving shaft 28 to rotate. During the upward movement of the weight 8, there is always an upward force to cause it to move upward. When the upper driving tooth plate 83 is geared with the one-way gear 29 arranged above and drives the rotating column 26 to rotate 180° to return to its original position, the first permanent magnet 27 is facing away from the second permanent magnet 85, and the repulsive force is isolated. At this time, the weight 8 continues to move upward through inertia and contacts the guide slope of the first positioning block 24 and finally completes the plugging of the first positioning block 24 and the upper positioning rod 82 to form a positioning.

[0027] It should be noted that, first, the upper telescopic rod 17 and the lower telescopic rod 22 both include a movable part and a fixed part, and the movable part is sealed and slidably arranged in the inner cavity of the fixed part through an elastic sleeve arranged at its end, and the elastic sleeve is made of high-temperature resistant flame-retardant material; second, a damping sleeve is arranged at the rotating connection of the rotating column 26.

[0028] As a preferred implementation manner in this embodiment, it also includes a winding unit, one end of which is installed on the mounting frame 1 and the other end is installed on the protective box 9, and the charging wire 5 is wound before the charging pile body 2 enters the protective box 9.

[0029] As a preferred implementation in this embodiment, Figure 4 and Figure 8 As shown, the winding unit includes a long tooth plate 34 fixedly arranged at the bottom of the protection box 9 and a winding shaft 30 rotatably arranged in the inner cavity of the charging pile body 2; A winding wheel 31 is installed on the winding shaft 30. The upper end of the charging wire 5 passes through the axis of the winding shaft 30 and is connected to the circuit board in the charging pile body 2 through a conductive slip ring 32. A winding gear 33 adapted to the long tooth plate 34 is fixed on the outer end of the winding shaft 30 that passes through the charging pile body 2.

[0030] When the heavy object 8 moves downward and the charging pile body 2 moves upward, its winding gear 33 will contact the long tooth plate 34 and cause the winding shaft 30 to rotate and wind, so that the charging wire 5 can be wound on the winding wheel 31. The winding is completed before the protective box 9 is sealed, which is beneficial for the charging wire 5 to be transported to the protective box 9 for protection. At the same time, it has a certain slowing effect on the downward movement of the heavy object 8, which is beneficial for reducing the collision intensity. On the contrary, when the charging pile body 2 moves upward, it will release the wire. After winding, the charging wire 5 can enter the protective box 9 together with the charging pile body 2.

[0031] It should be noted that a damping sleeve is provided at the rotating connection of the winding shaft 30 so that the winding wheel 31 does not rotate after winding.

[0032] As a preferred implementation in this embodiment, Figure 1 As shown, an elastic buffer sleeve 35 is fixed on the wire rope 7, and the elastic buffer sleeve 35 is a hollow structure with an open upper end and a closed lower end.

[0033] The purpose of setting the elastic buffer sleeve 35 is that when the heavy object 8 is positioned at a low place, the upper end of the elastic buffer sleeve 35 contacts the upper end of the inner wall of the protection box 9. At this time, the through hole on the protection box 9 for the steel wire rope 7 to pass through can be sealed, which can prevent hot air and thick smoke generated by spontaneous combustion of new energy vehicles from entering the protection box 9 and causing damage to the internal components of the internal charging pile body 2. The elastic buffer sleeve 35 of this structure has good deformability and a longer buffer distance.

[0034] As a preferred implementation in this embodiment, Fig. 9 As shown, multiple annular extrusion gaps 16 are arranged from top to bottom on the inner and outer walls of the elastic buffer sleeve 35 .

[0035] The buffer distance of the elastic buffer sleeve 35 is further extended, and the collision strength between the heavy object 8 and the component is further reduced.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A safety protection type new energy vehicle charging pile, comprising a mounting frame (1) and a charging pile body (2) mounted on the mounting frame (1), wherein a charging gun (4) is connected to the charging pile body (2) via a charging wire (5), and characterized in that: It also includes a protection box (9) with an internal hollow bottom that is open, a bottom plate (10) for sealing the bottom opening of the protection box (9), and a self-triggering unit; The protection box (9) is mounted on the mounting frame (1), the bottom plate (10) is movably mounted on the protection box (9), and the protection box (9) and the bottom plate (10) are both made of heat-insulating and flame-retardant materials; When the self-triggering unit detects that the new energy vehicle in the parking space has spontaneously combusted, it will automatically trigger and drive the charging pile body (2) to move to the inner cavity of the protection box (9) and then drive the bottom plate (10) to seal the bottom opening of the protection box (9).

2. A safety protection type new energy vehicle charging pile according to claim (1), characterized in that: The self-triggering unit comprises a steel wire rope (7) vertically passing through the protection box (9), a weight (8), two movable telescopic rods (11) rotatably arranged on both sides of the protection box (9), a plurality of fixed guide wheels (15) and a plurality of movable guide wheels (14) installed at intervals on the inner wall of the protection box (9), and a heat-conducting cylinder (21) fixed on the mounting frame (1); The mounting frame (1) comprises two side panels (101), and the two side panels (101) are fixedly connected via two sets of transverse panels (102); The lower ends of the two movable telescopic rods (11) are rotatably connected to the upper end of the bottom plate (10); a movement cavity is provided between the protection box (9) and the mounting frame (1); the bottom plate (10) is slidably engaged in the movement cavity; damping sleeves are provided at the rotation points of the two movable telescopic rods (11); and opening and closing gears (12) are fixed to the ends of the rotating shafts of the two movable telescopic rods (11) located in the protection box (9); The two ends of the steel wire rope (7) are respectively connected to a limit plate (3) and the weight (8); the limit plate (3) is slidably arranged on the mounting frame (1); the charging pile body (2) is mounted on the lower end of the limit plate (3); and an opening and closing gear plate (13) adapted to the two opening and closing gears (12) is provided on the limit plate (3); The charging pile body (2) is connected to the lower end of the power transmission wire (6); the upper end of the power transmission wire (6) is sequentially mounted on a plurality of fixed guide wheels (15) and a plurality of movable guide wheels (14) and passes through the protection box (9) to be connected to the mains power system; the plurality of fixed guide wheels (15) are rotationally connected to the protection box (9); the plurality of movable guide wheels (14) are slidably engaged with the protection box (9); and a slide groove adapted to the movable guide wheel (14) is provided on the protection box (9); An upper positioning rod (81) is fixed to the upper end of the weight (8), a positioning hole is provided on the upper positioning rod (81), and the upper end of the upper positioning rod (81) passes through the horizontal plate (102) located above; The heat-conducting tube (21) is in communication with the inner cavity of an upper telescopic rod (17) fixedly mounted on the mounting frame (1) via a heat-insulating tube, and the inner cavity of the heat-conducting tube (21) is filled with a low-boiling-point liquid; The output end of the upper telescopic rod (17) is gear-connected with the rack (19) through a transmission gear (18); the transmission gear (18) is rotatably arranged on the upper horizontal plate (102); the rack (19) is slidably engaged with the upper horizontal plate (102); a first positioning block (24) is installed on the right side of the rack (19); a guide inclined surface is arranged at the lower end of the first positioning block (24); the right end of the first positioning block (24) is plugged into the upper positioning hole; a sliding column is fixed to the left end of the first positioning block (24); and the left end of the sliding column is slidably arranged in the inner cavity of the movable end of the upper telescopic rod (17); the movable end of the upper telescopic rod (17) and the left end of the first positioning block (24) are connected via a first connecting spring (20).

3. A safety protection type new energy vehicle charging pile according to claim 2, characterized in that: It also includes an automatic resetting unit which automatically controls the charging pile body (2) to be moved out of the protection box (9) and restored to its original position when the spontaneous combustion of the new energy vehicle is detected to have ended.

4. A safety protection type new energy vehicle charging pile according to claim 3, characterized in that: The automatic reset unit comprises a lower positioning rod (82) installed at the lower end of the weight (8) and having a positioning hole, a lower telescopic rod (22) communicating with the inner cavity of the heat-conducting tube (21) through a heat-insulating tube, and two rotating columns (26) rotatably arranged in the inner cavities of the two side plates (101); The lower telescopic rod (22) is mounted on the mounting frame (1); a second positioning block (25) is arranged on the left side of the movable end of the lower telescopic rod (22); a sliding column is fixed to the right end of the second positioning block (25); and the right end of the sliding column is slidably arranged in the inner cavity of the movable end of the second positioning block (25); the second positioning block (25) is connected to the movable end of the lower telescopic rod (22) via a second connecting spring (23); and a guiding inclined surface is arranged on the upper end of the second positioning block (25); A groove is provided on the outer plane ends of the two rotating columns (26), and a first permanent magnet (27) with a strip structure is installed in the groove. A driving shaft (28) is provided above and below the rotating shaft of the rotating column (26), and a first bevel gear and a one-way gear (29) are respectively installed at both ends of the driving shaft (28). A second bevel gear meshing with the first bevel gear is installed at both ends of the rotating shaft of the rotating column (26). The two groups of one-way gears (29) located on the left or right side drive the driving shaft (28) to rotate in opposite directions. An upper driving tooth plate (83) and a lower driving tooth plate (84) adapted to the corresponding one-way gear (29) are installed on both side ends of the weight (8) in an upper and lower manner. Mounting blocks with mounting bevels are respectively mounted on both side ends of the weight (8), and a second permanent magnet (85) is mounted on the mounting bevel. The outer end of the second permanent magnet (85) has the same magnetic pole as the outer end of the first permanent magnet (27).

5. A safety protection type new energy vehicle charging pile according to claim 2, characterized in that: It also comprises a winding unit, one end of which is mounted on the mounting frame (1) and the other end of which is mounted on the protective box (9), for winding the charging wire (5) before the charging pile body (2) enters the protective box (9).

6. A safety protection type new energy vehicle charging pile according to claim 5, characterized in that: The winding unit comprises a long tooth plate (34) fixedly arranged at the bottom of the protection box (9) and a winding shaft (30) rotatably arranged in the inner cavity of the charging pile body (2); A winding wheel (31) is mounted on the winding shaft (30); the upper end of the charging wire (5) passes through the axis of the winding shaft (30) and is connected to a circuit board in the charging pile body (2) via a conductive slip ring (32); and a winding gear (33) adapted to the long tooth plate (34) is fixed to the outer end of the winding shaft (30) that passes through the charging pile body (2).

7. A safety protection type new energy vehicle charging pile according to claim 2, characterized in that: An elastic buffer sleeve (35) is fixed on the steel wire rope (7), and the elastic buffer sleeve (35) is a hollow structure with an open upper end and a closed lower end.

8. A safety protection type new energy vehicle charging pile according to claim 7, characterized in that: Multiple extrusion gaps (16) of annular structures are arranged on the inner and outer walls of the elastic buffer sleeve (35) from top to bottom.

Images