Electric vehicle charging station protection equipment and protection method

Abstract

The invention relates to the technical field of charging piles, in particular to electric vehicle charging station protection equipment and a protection method. The electric vehicle charging station protection equipment comprises a main body frame, a charging pile body and a buffer contraction mechanism, and the buffer contraction mechanism comprises a buffer steel frame set arranged in front of the charging pile body and a first guide buffer assembly which is matched with the buffer steel frame set to move axially and buffers a vehicle transversely. According to the charging pile, when the charging pile body is subjected to the vehicle collision risk, the collision force can be buffered through the buffer contraction mechanism, the charging pile body is subjected to descending displacement through the buffer contraction mechanism while buffering is conducted, and therefore dual protection on the charging pile body is achieved; emergency braking and inertia buffering of an out-of-control vehicle are achieved, the safety of a driver and personnel around the charging pile body is protected while the safety of the charging pile body is ensured, and the purpose of protecting the charging pile body and the personnel is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of charging piles, and in particular to electric vehicle charging station protection equipment and a protection method. Background Art

[0002] A charging pile, also known as an electric vehicle charging station or electric vehicle power supply equipment, is a device that provides electrical energy to electric vehicles, enabling them to store enough electricity to support their operation.

[0003] During the use of charging piles, they are prone to leaking current after being damaged, and the current is instantaneous to damage personnel or equipment, which can easily lead to casualties or equipment damage. At the same time, based on the high transmission efficiency of new energy vehicles, they can generate a large impact force in a short time after losing control, further exacerbating the risk of damage to the charging piles. Therefore, it is necessary to equip the charging piles with protective equipment.

[0004] Refer to patent document CN110466372B, which is titled as a patent for a charging station protection device. It can absorb part of the impact energy between the electric new energy vehicle and the anti-collision frame by adding a buffer mechanism. Therefore, it can not only reduce the probability of serious damage to the electric new energy vehicle, but also reduce the probability of driver injury.

[0005] Meanwhile, refer to patent document CN210337615U, which is entitled a patent for an electric vehicle charging station with anti-collision function. Springs are arranged inside two buffer cylinders and slide bars and support bars are respectively installed at the left and right ends of the two springs. After the vehicle hits the anti-collision bar, the anti-collision bar transfers the impact force to the slide bar through the support bar and the spring, so that the slide bar moves to the left to the button switch. Pressing the button switch turns on the air pump to inflate the airbag, thereby protecting the charging pile body and effectively preventing the charging pile body from being damaged. It is more practical.

[0006] However, the above-mentioned charging station protection equipment is to add guardrails or buffer components and place them around the charging piles to withstand the impact force brought by vehicles. However, the guardrails and buffer components and any peripheral protection measures need to take space issues into consideration when setting up, so their ability to withstand impact force is relatively limited. When the impact force is large, the charging pile is still at risk of being hit, and conventional protection equipment tends to focus on protecting the charging piles, and less on protecting personnel, which is prone to personnel safety issues caused by collisions. Summary of the invention

[0007] The purpose of the present invention is to make up for the deficiencies of the prior art and to provide an electric vehicle charging station protection device and a protection method. The scheme can not only provide buffer protection for the charging pile, but also displace the charging pile during the buffer protection so that it is lowered below the ground, thereby solving the risk of the charging pile being hit from the root. At the same time, when the impact force is large, the out-of-control vehicle can be further braked after the charging pile is protected to avoid casualties of the driver, thereby achieving the purpose of protecting the charging pile and the driver at the same time.

[0008] To solve the above problems, the present invention provides the following technical solutions: an electric vehicle charging station protection device, comprising a main frame, a charging pile body and a buffer retraction mechanism, the buffer retraction mechanism comprising a buffer steel frame group arranged in front of the charging pile body, and a first guide buffer component cooperating with the buffer steel frame group for axial movement and lateral buffering of the vehicle, and a transmission component for the buffer steel frame group to drive the charging pile body to rise and fall, the buffer retraction mechanism also comprises a lifting frame member and an elastic claw, the lifting frame member is fixedly connected to the charging pile body and is used to support the lifting of the charging pile body, and the elastic claw is fixedly connected to the main frame and is used to lock the position of the charging pile body after it is lowered.

[0009] A protective plate and an auxiliary braking mechanism are arranged above the main frame. The auxiliary braking mechanism includes a support for suspending the driving wheel of the vehicle, a third guide buffer assembly that cooperates with the protective plate to laterally buffer the vehicle again, and a torsion spring combination component fixedly connected to the steel plate body for supporting the third guide buffer assembly to rotate 90°.

[0010] Furthermore, the main frame includes a steel plate body and a prefabricated box detachably connected to the bottom surface of the steel plate body, the charging pile body is located in a reserved groove in the middle of the steel plate body, the buffer retraction mechanism is located inside the prefabricated box, and the bottom surface of the steel plate body is fixedly connected with a support frame for supporting the steel plate body, and the support frame is arranged side by side with the prefabricated box.

[0011] The beneficial effect of adopting the above-mentioned further scheme is that by providing a steel plate main body and a prefabricated box that are easily spliced, the device can be easily installed, disassembled and maintained efficiently. After the support frame is provided, the weak parts of the supporting capacity of the steel plate main body can be further strengthened, thereby improving the structural strength of the device and achieving the purpose of enhancing the safety of the device.

[0012] Furthermore, the first guide buffer assembly includes a guide rail fixedly connected to the bottom surface of the steel plate body for guiding the buffer steel frame group. The first guide buffer assembly also includes a first buffer tension spring. The two ends of the first buffer tension spring are respectively fixedly connected to the buffer steel frame group and the guide rail for buffering the movement of the buffer steel frame group.

[0013] The beneficial effect of adopting the above-mentioned further scheme is that by setting up the first guide buffer assembly, the movement process of the buffer steel frame group can be buffered and decelerated. When the buffer steel frame group is hit by a vehicle, the collision force acting on the buffer steel frame group is gradually offset, thereby achieving the purpose of protecting the charging pile body, avoiding damage to the charging pile body caused by collision, and ensuring the safety of the device.

[0014] Furthermore, the transmission assembly includes a longitudinal hydraulic component and a transverse hydraulic component fixedly connected to the inner wall of the prefabricated box, and a diverging and merging duct group arranged between the longitudinal hydraulic component and the transverse hydraulic component. The longitudinal hydraulic component and the transverse hydraulic component are connected through the diverging and merging duct group, and the telescopic end of the longitudinal hydraulic component passes through the reserved groove in the middle of the steel plate body and extends to the upper part of the steel plate body. The telescopic end of the longitudinal hydraulic component is fixedly connected to the lifting frame component, and the telescopic end of the transverse hydraulic component is fixedly connected to the buffer steel frame group.

[0015] The beneficial effect of adopting the above-mentioned further scheme is that by setting up a transmission assembly, when the buffer steel frame group is hit, the charging pile body can be driven down synchronously, so that the charging pile body sinks below the ground under the force of the vehicle impact, thereby solving the problem that the charging pile body may be damaged by external impact from the root, achieving the purpose of protecting the charging pile body, thereby ensuring the stability of the charging pile body and ensuring the safety of people around the device.

[0016] Furthermore, the torsion spring combination component is used to support the third guide buffer assembly in a vertical state, and the third guide buffer assembly is driven by an external force to rotate around the torsion spring combination component so that the support member contacts the upper surface of the steel plate body, and the upper surface of the steel plate body is fixedly connected with a limit baffle for preventing the third guide buffer assembly from rotating excessively.

[0017] The beneficial effect of adopting the above further scheme is that by arranging the torsion spring combination component, the third guide buffer assembly is in a vertical state, which can cooperate with the protective plate to achieve the upper protection of the charging pile body, prevent rain and debris from falling on the charging pile body, and at the same time avoid direct sunlight exposure to the charging pile body, thereby solving the problem of the charging pile body being eroded by rain or sunlight.

[0018] Furthermore, the third guide buffer assembly includes a sliding frame and a third buffer tension spring, the sliding frame is fixedly connected to the rotating part of the torsion spring combination component, the sliding frame is internally slidably connected with a sliding member and the telescopic end of the sliding member is fixedly connected to the protective plate, the two ends of the third buffer tension spring are respectively fixedly connected to the sliding frame and the sliding member for buffering the movement of the sliding member, and the support member is equidistantly installed on the sliding member for suspending the vehicle driving wheel, as well as supporting and buffering the movement of the sliding member.

[0019] The beneficial effect of adopting the above-mentioned further scheme is that, through the rotatability of the torsion spring combination component, the third guide buffer assembly can be converted into a lateral buffer state when the front buffer measures are unable to stop the vehicle collision, thereby eliminating the vehicle power and buffering the vehicle inertia, avoiding casualties caused by large impact force of the vehicle, and maximally avoiding casualties and equipment damage caused by vehicle collision.

[0020] Furthermore, the longitudinal hydraulic parts, transverse hydraulic parts and the dividing and merging duct group are tightly connected and filled with hydraulic fluid with low viscosity and small deformation coefficient for driving the mutual expansion and contraction between the longitudinal hydraulic parts and the transverse hydraulic parts. The upper surface of the steel plate body is fixedly connected with reinforcing ribs, which are used to block the movement of the buffer steel frame group and control the deformation of the buffer steel frame group.

[0021] The beneficial effect of adopting the above-mentioned further scheme is that, through the hydraulic transmission method, it can assist in producing a certain buffering effect when the hydraulic oil moves, and through the hydraulic oil with a smaller deformation coefficient, the hydraulic system can feedback more quickly, thereby enhancing the buffering performance of the first guide buffer assembly, and by setting reinforcing ribs, it can provide a certain degree of auxiliary support for the buffer steel frame group, and when the buffer steel frame group cannot block the collision of the vehicle, the structural strength of the lower half of the buffer steel frame group can be strengthened to achieve the deformation of the upper half of the buffer steel frame group, so that the vehicle tends to move obliquely upward, thereby achieving the purpose of crossing the upper part of the charging pile body and falling more smoothly onto the auxiliary braking mechanism.

[0022] Furthermore, an auxiliary buffer mechanism is provided inside the prefabricated box, and the auxiliary buffer mechanism includes a second guide buffer assembly for auxiliary buffering of the lifting and lowering of the lifting frame member, the second guide buffer assembly includes a support plate fixedly connected to the inner wall of the prefabricated box, and a sliding rod is slidably connected inside the support plate, and the second guide buffer assembly also includes a movable plate fixedly connected to the sliding rod, and a side of the movable plate close to the support plate is fixedly connected to a second buffer tension spring, the other end of the second buffer tension spring passes through the support plate and is fixedly connected to the inner wall of the prefabricated box through a fixed block, and the second buffer tension spring is used to buffer the sliding movement of the sliding rod inside the support plate through the movable plate and the fixed block, and the end of the sliding rod away from the movable plate is hinged with a linkage rod through a pin shaft, and the other end of the linkage rod is hinged with the bottom surface of the lifting frame member through the pin shaft to transmit the force of lifting the lifting frame member to the second guide buffer assembly.

[0023] The beneficial effect of adopting the above further scheme is that by setting up an auxiliary buffer mechanism, a certain buffering capacity can be generated when the charging pile body descends, which is used to indirectly assist the first buffer assembly and the buffer steel frame group in buffering the impact force of the vehicle, and can provide a certain degree of assistance when the charging pile body needs to rise, thereby achieving the purpose of convenient operation of the auxiliary device.

[0024] Furthermore, the electric vehicle charging station protection method comprises the following steps: S1: When the charging pile body is at risk of being hit by a vehicle, the buffer steel frame group will first be hit by the vehicle and move axially. When the buffer steel frame group moves, the impact force is offset based on the buffering effect of the first guide buffer component; S2: When the buffer steel frame group is hit by a vehicle, the transmission assembly transmits the displacement caused by the collision to the lifting frame component to lower the charging pile body; S3: The charging pile body descends, and the linkage rod drives the second guide buffer assembly to move. By blocking the charging pile body from descending, the transmission assembly indirectly blocks the movement trend of the buffer steel frame group, further offsetting the impact force; S4: When the impact force of the vehicle is large, the buffer steel frame group moves to the maximum stroke, the charging pile body moves to the bottom of the prefabricated box, the elastic claws are limited, and the charging pile body is completely retracted into the prefabricated box, sealing and isolating the charging pile body; S5: When the impact force of the vehicle further increases, the buffer steel frame assembly is deformed or broken, the vehicle continues to move forward and hits the third guide buffer assembly, the third guide buffer assembly rotates and becomes horizontal, the vehicle falls on the third guide buffer assembly and the chassis contacts the third guide buffer assembly, the support member cooperates with the third guide buffer assembly to support the vehicle and suspend the vehicle driving wheels, the vehicle loses forward momentum, the guard plate blocks the vehicle from moving forward, and cooperates with the third guide buffer assembly to buffer the vehicle inertia, and the vehicle stops moving.

[0025] Compared with the prior art, the electric vehicle charging station protection device and protection method have the following beneficial effects: 1. When the charging pile body is at risk of being hit by a vehicle, the present invention can buffer the impact force through the buffer contraction mechanism, and at the same time, the charging pile body can be downwardly displaced through the buffer contraction mechanism, thereby achieving double protection for the charging pile body, and when the vehicle impact force is large, the second stage of buffering protection can be performed, that is, emergency braking and inertia buffering of the out-of-control vehicle can be achieved through the auxiliary braking mechanism, while ensuring the safety of the charging pile body, the safety of the driver and the people around the charging pile body is protected, thereby achieving the purpose of protecting the charging pile body and the people.

[0026] 2. The present invention can provide auxiliary buffering effect on the movement of the buffer steel frame group by setting an auxiliary buffer mechanism and a hydraulic transmission method, thereby maximally reducing the movement process of the buffer steel frame group, thereby improving the buffering efficiency of the impact force, and by setting reinforcing ribs, it can provide a certain degree of auxiliary support for the buffer steel frame group, and when the buffer steel frame group cannot block the collision of the vehicle, the structural strength of the lower half of the buffer steel frame group can be strengthened to achieve the deformation of the upper half of the buffer steel frame group, so that the vehicle tends to move obliquely upward, so as to pass over the upper part of the charging pile body and fall more smoothly onto the auxiliary braking mechanism for the next step of emergency braking and inertia buffering. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 It is a schematic diagram of the final motion effect structure of the three-dimensional structure of the overall device of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the buffer shrinkage component of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the auxiliary buffer assembly of the present invention; Figure 6 It is a schematic diagram of the three-dimensional explosion structure of the auxiliary stop assembly of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the buffer steel frame group of the present invention; Figure 8 It is a schematic diagram of the effect of the cooperation between the buffer steel frame assembly and the rod breaker of the present invention; Fig. 9 For the present invention Figure 2 A schematic diagram of the enlarged structure of the structure at center A; Fig.10 For the present invention Figure 4 A schematic diagram of the enlarged structure at B in the middle; Fig.11 It is a front view cross-sectional structural schematic diagram of the transmission assembly of the present invention; Fig.12 It is a schematic diagram of the connection path structure of the transmission component of the present invention.

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Steel plate body; 2. Charging pile body; 3. Prefabricated box; 4. Protective plate; 5. Buffer retraction mechanism; 501. Longitudinal hydraulic parts; 502. Transverse hydraulic parts; 503. Buffer steel frame group; 504. Guide rail; 505. First buffer tension spring; 506. Reinforcement rib; 507. Lifting frame member; 508. Elastic claw; 6. Auxiliary buffer mechanism; 601. Support plate; 602. Sliding rod; 603. Moving plate; 604. Second buffer tension spring; 605. Linkage rod; 7. Auxiliary braking mechanism; 701. Torsion spring combination component; 702. Sliding frame; 703. Sliding member; 704. Support member; 705. Third buffer tension spring. DETAILED DESCRIPTION

[0029] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0030] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrally formed structure. For ordinary technicians in this field, the specific meanings of such terms in this patent can be understood according to specific circumstances.

[0031] As described in the background technology, conventional charging piles have limited efficiency in buffering external impact forces through protective components, and cannot achieve the purpose of completely avoiding collision risks for the charging piles, and cannot effectively ensure the safety of people around the charging piles. For this reason, the present embodiment provides an electric vehicle charging station protection device and a protection method. The device can not only provide buffering protection for the charging piles, but also can be lowered into the ground when the charging piles are about to be hit, thereby achieving the purpose of maximizing the avoidance of collisions for the charging piles, and can perform emergency braking and inertia buffering on the vehicle to protect the personal safety of people around the charging piles.

[0032] See also Figure 1 - Fig.10 This embodiment proposes an electric vehicle charging station protection device, including a main frame, a charging pile body 2 and a buffer retraction mechanism 5.

[0033] In this embodiment, the main frame includes a steel plate body 1 and a prefabricated box 3 detachably connected to the bottom surface of the steel plate body 1, the charging pile body 2 is located in the reserved groove position in the middle of the steel plate body 1, the buffer retraction mechanism 5 is located inside the prefabricated box 3, and the bottom surface of the steel plate body 1 is fixedly connected to a support frame for supporting the steel plate body 1, and the support frame and the prefabricated box 3 are arranged side by side.

[0034] like Figure 1 As shown, the support frame can adopt an X-shaped structure to maximize the structural strength.

[0035] Furthermore, by providing a steel plate main body 1 and a prefabricated box 3 that are easily spliced, the device can be easily installed and disassembled and the maintenance efficiency can be improved. After the support frame is provided, the weak supporting capacity of the steel plate main body 1 can be further strengthened, the structural strength of the device can be improved, and the purpose of enhancing the safety of the device can be achieved.

[0036] At the same time, if Figure 1 As shown, two preset strip grooves are opened on the steel plate body 1 during casting to adapt to the movement of subsequent transmission components.

[0037] The buffer retraction mechanism 5 includes a buffer steel frame group 503 arranged in front of the charging pile body 2, a first guide buffer component that cooperates with the buffer steel frame group 503 for axial movement and lateral buffering of the vehicle, and a transmission component used for the buffer steel frame group 503 to drive the charging pile body 2 to rise and fall.

[0038] Here, the buffer steel frame assembly 503 slides in two preset strip grooves on the steel plate body 1 .

[0039] At the same time, the first guide buffer assembly includes a guide rail 504 fixedly connected to the bottom surface of the steel plate body 1 for guiding the buffer steel frame group 503. The first guide buffer assembly also includes a first buffer tension spring 505. The two ends of the first buffer tension spring 505 are respectively fixedly connected to the buffer steel frame group 503 and the guide rail 504 for buffering the movement of the buffer steel frame group 503.

[0040] Furthermore, by setting up a first guide buffer component, the movement process of the buffer steel frame group 503 can be buffered and decelerated. When the buffer steel frame group 503 is hit by a vehicle, the collision force acting on the buffer steel frame group 503 is gradually offset, thereby achieving the purpose of protecting the charging pile body 2, avoiding damage to the charging pile body 2 caused by collision, and ensuring the safety of the device.

[0041] The buffer retraction mechanism 5 also includes a lifting frame component 507 and an elastic claw 508. The lifting frame component 507 is fixedly connected to the charging pile body 2 and is used to support the lifting of the charging pile body 2. The elastic claw 508 is fixedly connected to the main frame and is used to lock the position of the charging pile body 2 after it is lowered.

[0042] The upper surface of the charging pile body 2 is fixedly connected with a plate-like structure that matches the reserved groove in the middle of the steel plate body 1, so as to achieve the purpose of protecting the top of the charging pile body 2 after it is lowered.

[0043] In addition, the transmission assembly includes a longitudinal hydraulic component 501 and a transverse hydraulic component 502 fixedly connected to the inner wall of the prefabricated box 3, and a split-and-joint duct group arranged between the longitudinal hydraulic component 501 and the transverse hydraulic component 502. The longitudinal hydraulic component 501 and the transverse hydraulic component 502 are connected through the split-and-joint duct group, and the telescopic end of the longitudinal hydraulic component 501 passes through the reserved groove in the middle of the steel plate body 1 and extends to the upper part of the steel plate body 1. The telescopic end of the longitudinal hydraulic component 501 is fixedly connected to the lifting frame component 507, and the telescopic end of the transverse hydraulic component 502 is fixedly connected to the buffer steel frame group 503.

[0044] It should be noted here that the hydraulic oil volume in the horizontal hydraulic component 502 must be greater than the hydraulic oil volume inside the longitudinal hydraulic component 501 to ensure that when the buffer steel frame group 503 drives the horizontal hydraulic component 502 to move to the maximum stroke, the lifting frame component 507 has dropped to the bottom of the prefabricated box 3.

[0045] If the lifting frame component 507 moves to the locking range of the elastic claw 508, it means that the lifting frame component 507 moves to the lowest point. At this time, the buffer steel frame group 503 is in the maximum stroke state. For the purpose of protecting the charging pile body 2, and the buffer steel frame group 503 may be continuously subjected to impact force, the lifting frame component 507 and the charging pile body 2 are locked for protection.

[0046] Furthermore, by setting up a transmission component, when the buffer steel frame group 503 is hit, the charging pile body 2 can be driven down synchronously, so that the charging pile body 2 sinks below the ground under the force of the vehicle impact, thereby solving the problem that the charging pile body 2 may be damaged by external impact from the root, achieving the purpose of protecting the charging pile body 2, thereby ensuring the stability of the charging pile body 2 and ensuring the safety of people around the device.

[0047] A protective plate 4 and an auxiliary braking mechanism 7 are arranged above the main frame. The auxiliary braking mechanism 7 includes a support 704 for suspending the vehicle drive wheel, a third guide buffer assembly that cooperates with the protective plate 4 to laterally buffer the vehicle again, and a torsion spring combination component 701 fixedly connected to the steel plate main body 1 for supporting the third guide buffer assembly to rotate 90°.

[0048] The torsion spring combination component 701 becomes a conventional torsion spring structure, which enables the third guide buffer assembly to maintain a vertical state under normal conditions. However, when subjected to external force, that is, when the external force is greater than the torsion spring torsion force, it can also rotate to achieve the goal of converting the third guide buffer assembly to a horizontal state. The torsion spring elastic force needs to maintain a certain strength to avoid the problem of rotation of the third guide buffer assembly caused by strong airflow. The torsion force of the torsion spring is maintained at a level that allows the third guide buffer assembly to rotate when subjected to a large impact force.

[0049] The torsion spring combination component 701 is used to support the third guide buffer assembly in a vertical state, and the third guide buffer assembly is driven by an external force to rotate around the torsion spring combination component 701 so that the support member 704 contacts the upper surface of the steel plate body 1, and the upper surface of the steel plate body 1 is fixedly connected with a limit baffle for preventing the third guide buffer assembly from rotating excessively.

[0050] Preferably, by arranging the torsion spring combination component 701, the third guide buffer assembly is in a vertical state, which can cooperate with the protective plate 4 to protect the upper part of the charging pile body 2, prevent rain and debris from falling onto the charging pile body 2, and at the same time avoid direct sunlight exposure to the charging pile body 2, thereby solving the problem of the charging pile body 2 being eroded by rain or sunlight.

[0051] The third guide buffer assembly includes a sliding frame 702 and a third buffer tension spring 705. The sliding frame 702 is fixedly connected to the rotating part of the torsion spring combination component 701. The sliding frame 702 is internally slidably connected to the sliding member 703 and the telescopic end of the sliding member 703 is fixedly connected to the protective plate 4. The two ends of the third buffer tension spring 705 are respectively fixedly connected to the sliding frame 702 and the sliding member 703 for buffering the movement of the sliding member 703. The support member 704 is installed equidistantly on the sliding member 703 for suspending the vehicle driving wheel and supporting and buffering the movement of the sliding member 703.

[0052] Through the rotatability of the torsion spring combination component 701, the third guide buffer assembly can be converted into a lateral buffer state when the front buffer measures are unable to stop the vehicle collision, thereby eliminating the vehicle power and buffering the vehicle inertia, avoiding casualties caused by large impact force of the vehicle, and maximally avoiding casualties and equipment damage caused by vehicle collision.

[0053] It should be noted that the sum of the heights of the sliding member 703 and the supporting member 704 must be greater than the height between the chassis of a conventional vehicle and the ground to ensure that the driving wheels of the vehicle are separated from the bearing surface when the chassis contacts the sliding frame 702 .

[0054] The width of the sliding frame 702 needs to be smaller than the lateral spacing of the driving wheels of a conventional vehicle to ensure that it can only contact the vehicle chassis but not the vehicle driving wheels. If necessary, guide plates can be set on both sides of the auxiliary braking mechanism 7 so that the vehicle moving direction is consistent with the sliding direction of the sliding member 703.

[0055] At the same time, the edges and corners of the sliding frame 702 and the sliding member 703 should be treated with friction-reducing materials or with the addition of grease materials to prevent the driving wheels from contacting the above two and generating power when the vehicle is tilted, thereby preventing the vehicle from detaching from the device and causing braking failure.

[0056] like Fig.11 and Fig.12 As shown, the longitudinal hydraulic parts 501, the transverse hydraulic parts 502 and the dividing and merging duct groups are tightly connected, and are filled with hydraulic fluid with low viscosity and small deformation coefficient to drive the mutual expansion and contraction between the longitudinal hydraulic parts 501 and the transverse hydraulic parts 502. The upper surface of the steel plate body 1 is fixedly connected with a reinforcing rib 506, which is used to block the movement of the buffer steel frame group 503 and control the deformation of the buffer steel frame group 503.

[0057] The longitudinal hydraulic component 501 and the transverse hydraulic component 502 are conventional hydraulic telescopic rod structures, specifically: hydraulic cylinder: filled with hydraulic oil, which is the main part of generating hydraulic pressure; piston rod (or called inner telescopic rod): connected to the piston in the hydraulic cylinder, and pushed by the pressure of the hydraulic oil to achieve telescopic movement; Extension process: When the hydraulic oil enters the hydraulic cylinder through the oil nozzle, the hydraulic oil generates pressure on the piston, pushing the piston and piston rod outward.

[0058] Retraction process: Hydraulic oil is discharged from the hydraulic cylinder nozzle, and the piston rod is retracted to its original position under the action of external load (such as spring force, gravity or other mechanical devices).

[0059] The split-and-joint duct group is used to transfer hydraulic oil between the longitudinal hydraulic component 501 and the transverse hydraulic component 502 .

[0060] The specific working principle between the longitudinal hydraulic component 501, the transverse hydraulic component 502 and the flow separation and confluence duct group is as follows: First, when the inner telescopic rod of the horizontal hydraulic component 502 is driven by an external force to extend out of the outer sleeve, the space inside the outer sleeve becomes larger, and the hydraulic oil in the longitudinal hydraulic component 501 and the separation and confluence duct group is drawn into the outer sleeve of the horizontal hydraulic component 502, and the inner telescopic rod end of the longitudinal hydraulic component 501 will retract into the outer sleeve of the longitudinal hydraulic component 501; Second: when the inner telescopic rod of the horizontal hydraulic component 502 is driven by external force to retract into the outer sleeve, based on the above movement principle, a reverse effect will occur between the structures, and the inner telescopic rod end of the longitudinal hydraulic component 501 will extend out of the outer sleeve of the longitudinal hydraulic component 501.

[0061] Under normal circumstances, the outer sleeve of the longitudinal hydraulic component 501 and the dividing and merging duct group are filled with hydraulic oil, and the inner sleeve of the transverse hydraulic component 502 is its corresponding inner telescopic rod, which is subjected to the force of the first buffer tension spring 505. The longitudinal hydraulic component 501 and the transverse hydraulic component 502 will not generate hydraulic oil interaction on their own.

[0062] As an implementation mode, through the hydraulic transmission method, it can assist in generating a certain buffering effect when the hydraulic oil moves, and through the hydraulic oil with a smaller deformation coefficient, the hydraulic system feedback can be relatively rapid, thereby enhancing the buffering performance of the first guide buffer assembly, and by setting the reinforcing ribs 506, it can provide a certain degree of auxiliary support for the buffer steel frame group 503, and when the buffer steel frame group 503 cannot block the collision of the vehicle, the structural strength of the lower half of the buffer steel frame group 503 can be strengthened to achieve the deformation of the upper half of the buffer steel frame group 503, so that the vehicle tends to move obliquely upward, thereby achieving the purpose of crossing the upper part of the charging pile body 2 and falling onto the auxiliary braking mechanism 7 more smoothly.

[0063] like Figure 8 As shown, a sharp head can be added to the upper end of the reinforcing rib 506, and the contact position with the buffer steel frame group 503 needs to be above the reinforcing structure node of the buffer steel frame group 503 itself. By setting the sharp head, the deformation speed of the buffer steel frame group 503 when contacting the reinforcing rib 506 can be accelerated, and even the buffer steel frame group 503 can be directly broken when the rigidity of the buffer steel frame group 503 itself is relatively large, so as to more conveniently guide the vehicle into the auxiliary braking mechanism 7 for the next stage of buffering and braking.

[0064] The purpose of causing the buffer steel frame group 503 to deform or break is to avoid the impact force from continuously acting on the buffer steel frame group 503, which may cause the vehicle impact direction to change or the linkage structure of the buffer steel frame group 503 to be seriously damaged. Therefore, when the impact force is large, it is the best option to abandon the buffer steel frame group 503 and guide the vehicle to the next stage of buffering and braking.

[0065] As for whether the fracture of the buffer steel frame group 503 will cause scratches on the bottom of the vehicle, considering that the bottom of the vehicle is generally thickened, especially new energy vehicles with the power source placed at the bottom of the vehicle will also be reinforced and thickened, there will basically be no problem of the fracture of the buffer steel frame group 503 causing scratches on the bottom of the vehicle, which will seriously increase the danger of the vehicle.

[0066] An auxiliary buffer mechanism 6 is provided inside the prefabricated box 3, and the auxiliary buffer mechanism 6 includes a second guide buffer assembly for auxiliary buffering of the lifting and lowering of the lifting frame component 507. The second guide buffer assembly includes a support plate 601 fixedly connected to the inner wall of the prefabricated box 3, and a slide rod 602 is slidably connected inside the support plate 601. The second guide buffer assembly also includes a moving plate 603 fixedly connected to the slide rod 602, and a second buffer tension spring 604 is fixedly connected to the side of the moving plate 603 close to the support plate 601. The other end of the second buffer tension spring 604 passes through the support plate 601 and is fixedly connected to the inner wall of the prefabricated box 3 through a fixed block. The second buffer tension spring 604 is used to buffer the sliding movement of the slide rod 602 inside the support plate 601 through the moving plate 603 and the fixed block. The end of the slide rod 602 away from the moving plate 603 is hinged with a linkage rod 605 through a pin shaft, and the other end of the linkage rod 605 is hinged to the bottom surface of the lifting frame component 507 through a pin shaft to transmit the force of lifting and lowering the lifting frame component 507 to the second guide buffer assembly.

[0067] In addition, by setting up an auxiliary buffer mechanism 6, a certain buffering capacity can be generated when the charging pile body 2 descends, which is used to indirectly assist the first buffer component and the buffer steel frame group 503 in buffering the impact force of the vehicle, and can provide a certain degree of assistance when the charging pile body 2 needs to rise, so as to achieve the purpose of convenient operation of the auxiliary device.

[0068] As for the problem of setting the second buffer tension spring 604 between the sliding rod 602 instead of setting it on the sliding rod 602, it is to maximize the moving stroke of the sliding rod 602 so that it is not affected by the extreme compression length of the second buffer tension spring 604. The method selected in this scheme can maximize the reduction of the overall moving stroke of the sliding rod 602 to reduce the overall occupied space of the auxiliary buffer mechanism 6.

[0069] The above impact force on the vehicle is directed in the following directions, such as Figure 1 As shown, the right side is intended to be the front direction of the charging pile body 2. According to common understanding, when choosing a commercial large-scale charging pile for charging, the vehicle needs to charge facing the charging pile body 2, and there will generally be parking spaces for standardized parking. Therefore, this solution is mainly aimed at the impact of vehicles coming from the front of the charging pile body 2.

[0070] At the same time, according to conventional understanding, the transmission efficiency of hydraulic oil is relatively slow, so the hydraulic oil with a smaller deformation coefficient can make the hydraulic system feedback faster and have a certain buffering effect. The auxiliary buffer mechanism 6 proposed in this solution will affect the feedback rate of the hydraulic system, so the buffer steel frame group 503 needs to have a certain structural strength to avoid breakage when the buffer steel frame group 503 has not reached the maximum stroke, or an elastic buffer structure is added to the buffer steel frame group 503 to enable it to properly buffer the impact force first, so as to avoid the instantaneous large impact force directly acting on the hydraulic system, so that the hydraulic system has no time to feedback and causes the buffer steel frame group 503 to break.

[0071] The steps of protecting the charging device of the present invention are as follows: S1: When the charging pile body is at risk of being hit by a vehicle, the buffer steel frame group will first be hit by the vehicle and move axially. When the buffer steel frame group moves, the impact force is offset based on the buffering effect of the first guide buffer component; S2: When the buffer steel frame group is hit by a vehicle, the transmission assembly transmits the displacement caused by the collision to the lifting frame component to lower the charging pile body; S3: The charging pile body descends, and the linkage rod drives the second guide buffer assembly to move. By blocking the charging pile body from descending, the transmission assembly indirectly blocks the movement trend of the buffer steel frame group, further offsetting the impact force; S4: When the impact force of the vehicle is large, the buffer steel frame group moves to the maximum stroke, the charging pile body moves to the bottom of the prefabricated box, the elastic claws are limited, and the charging pile body is completely retracted into the prefabricated box, sealing and isolating the charging pile body; S5: When the impact force of the vehicle further increases, the buffer steel frame assembly is deformed or broken, the vehicle continues to move forward and hits the third guide buffer assembly, the third guide buffer assembly rotates and becomes horizontal, the vehicle falls on the third guide buffer assembly and the chassis contacts the third guide buffer assembly, the support member cooperates with the third guide buffer assembly to support the vehicle and suspend the vehicle driving wheels, the vehicle loses forward momentum, the guard plate blocks the vehicle from moving forward, and cooperates with the third guide buffer assembly to buffer the vehicle inertia, and the vehicle stops moving.

[0072] The working principle of the present invention is as follows: The present invention buffers the impact force of the vehicle in two stages to protect the charging pile body 2 and the personnel around the charging pile body 2, as follows: The first buffer stage operation state: when the vehicle is about to collide with the charging pile body 2, it will first contact the buffer steel frame group 503, and the buffer steel frame group 503 will move inside the guide rail 504, and the impact force will be buffered by the first buffer tension spring 505. When the buffer steel frame group 503 moves, it will simultaneously drive the transverse hydraulic component 502 to extend, so that the hydraulic oil inside the longitudinal hydraulic component 501 can enter the transverse hydraulic component 502 through the separation and confluence duct group. This process further increases the buffering force. When the hydraulic oil inside the longitudinal hydraulic component 501 is pumped away, it will drive the lifting frame component 507 and the charging pile body 2 to descend to the inside of the prefabricated box 3, and through the auxiliary buffer The impact mechanism 6 slows down the speed at which the charging pile body 2 descends, which inevitably leads to a decrease in the transmission efficiency of the hydraulic oil, thereby achieving the purpose of further buffering the movement of the buffer steel frame group 503. At this time, when facing normal impact force, the buffer steel frame group 503 can be buffered without moving the entire distance; 1. If the buffering of the out-of-control vehicle is successful: the lifting frame member 507 has not moved to the lowest point, then after the impact force disappears, the above structure will run in the reverse direction, and the lifting frame member 507 drives the undamaged charging pile body 2 to slowly rise and reset, and the protection process ends; 2. If the buffering of the out-of-control vehicle is unsuccessful, the impact force continues to act on the buffer steel frame group 503, and this scheme enters the next process; The first buffering stage limit state: when the above-mentioned buffering of the out-of-control vehicle is unsuccessful, when the impact force continues to act on the buffer steel frame group 503, the buffer steel frame group 503 will eventually move to the maximum stroke state and contact the reinforcing rib 506. At this time, the buffer steel frame group 503 cannot move further. At the same time, the lifting frame member 507 has moved to the lowest point and successfully entered the limit range of the elastic claw 508. The charging pile body 2 is locked. At this time, regardless of whether the out-of-control vehicle is successfully blocked, the buffer steel frame group 503 will lose the impact force after a short time. The out-of-control vehicle will no longer move or the buffer steel frame group 503 will be deformed or broken; 1. If the out-of-control vehicle is successfully blocked: buffer The impact force on the steel frame group 503 disappears, but the above structure is locked by the lifting frame member 507 and the elastic claw 508 and will not move in the opposite direction. Subsequently, the locking of the elastic claw 508 on the elastic claw 508 is cancelled, and the buffer steel frame group 503 is replaced according to the damaged state. The device can automatically return to the initial state and the protection process ends; 2. If the out-of-control vehicle is not blocked successfully: at this time, the buffer steel frame group 503 is deformed or broken, and the impact force on the buffer steel frame group 503 disappears, but the lifting frame member 507 and the elastic claw 508 are in a locked state, and the charging pile body 2 will not be reset, so the charging pile body 2 is not damaged, and this scheme enters the next stage; The second buffering stage: when the above-mentioned blocking of the out-of-control vehicle is unsuccessful, it means that the impact force of the out-of-control vehicle is large or is still continuing, which may cause casualties. During this process, the out-of-control vehicle will first hit the third guide buffer assembly and make it horizontal. After the out-of-control vehicle falls on the third guide buffer assembly, the sliding frame 702 will contact the vehicle chassis and, at the same time, supported by the support member 704, the vehicle will present a state in which the chassis contacts the sliding frame 702 but the driving wheel cannot contact the bearing surface. At this time, the vehicle power disappears, but there is still a certain inertia. After the vehicle contacts the guard plate 4, it will drive the sliding member 703 to slide. When the sliding member 703 slides, it gradually slows down through the tension of the third buffer tension spring 705 and the friction of the support member 704 until it stops, completing the braking effect on the vehicle and achieving the purpose of protecting the safety of people. Through the above two stages, the purpose of maximizing the protection of the charging pile body 2 and ensuring the safety of personnel can be achieved.

[0073] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0074] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. Electric vehicle charging station protection equipment, characterized by: The utility model comprises a main frame, a charging pile body (2) and a buffer retracting mechanism (5), wherein the buffer retracting mechanism (5) comprises a buffer steel frame group (503) arranged in front of the charging pile body (2), a first guide buffer component cooperating with the buffer steel frame group (503) for axial movement and lateral buffering of the vehicle, and a transmission component used for the buffer steel frame group (503) to drive the charging pile body (2) to rise and fall, and the buffer retracting mechanism (5) further comprises a lifting frame component (507) and an elastic clamping claw (508), wherein the lifting frame component (507) is fixedly connected to the charging pile body (2) and used to support the lifting of the charging pile body (2), and the elastic clamping claw (508) is fixedly connected to the main frame and used to lock the position of the charging pile body (2) after it is lowered; A protective plate (4) and an auxiliary braking mechanism (7) are arranged above the main frame, and the auxiliary braking mechanism (7) comprises a support member (704) for suspending the driving wheel of the vehicle, a third guide buffer component for cooperating with the protective plate (4) to buffer the vehicle laterally again, and a torsion spring combination component (701) fixedly connected to the steel plate main body (1) for supporting the third guide buffer component to rotate 90 degrees.

2. The electric vehicle charging station protection device according to claim 1, characterized in that: The main frame comprises a steel plate main body (1) and a prefabricated box (3) detachably connected to the bottom surface of the steel plate main body (1); the charging pile body (2) is located at a reserved groove in the middle of the steel plate main body (1); the buffer retraction mechanism (5) is located inside the prefabricated box (3); the bottom surface of the steel plate main body (1) is fixedly connected to a support frame for supporting the steel plate main body (1); the support frame and the prefabricated box (3) are arranged side by side.

3. The electric vehicle charging station protection device according to claim 2, characterized in that: The first guide buffer assembly comprises a guide rail (504) fixedly connected to the bottom surface of the steel plate body (1) and used for guiding the buffer steel frame group (503). The first guide buffer assembly also comprises a first buffer tension spring (505), wherein two ends of the first buffer tension spring (505) are respectively fixedly connected to the buffer steel frame group (503) and the guide rail (504) and used for buffering the movement of the buffer steel frame group (503).

4. The electric vehicle charging station protection device according to claim 2, characterized in that: The transmission assembly comprises a longitudinal hydraulic component (501) and a transverse hydraulic component (502) fixedly connected to the inner wall of the prefabricated box (3), and a separation and confluence duct group arranged between the longitudinal hydraulic component (501) and the transverse hydraulic component (502); the longitudinal hydraulic component (501) and the transverse hydraulic component (502) are connected via the separation and confluence duct group, and the telescopic end of the longitudinal hydraulic component (501) passes through a reserved groove in the middle of the steel plate body (1) and extends to the upper part of the steel plate body (1); the telescopic end of the longitudinal hydraulic component (501) is fixedly connected to a lifting frame component (507), and the telescopic end of the transverse hydraulic component (502) is fixedly connected to the buffer steel frame group (503).

5. The electric vehicle charging station protection device according to claim 2, characterized in that: The torsion spring assembly (701) is used to support the third guide buffer assembly in a vertical state, and the third guide buffer assembly is driven by an external force to rotate around the torsion spring assembly (701) so that the support member (704) contacts the upper surface of the steel plate body (1), and a limit baffle is fixedly connected to the upper surface of the steel plate body (1) for preventing the third guide buffer assembly from rotating excessively.

6. The electric vehicle charging station protection device according to claim 1, characterized in that: The third guide buffer assembly comprises a sliding frame (702) and a third buffer tension spring (705); the sliding frame (702) is fixedly connected to the rotating part of the torsion spring combination component (701); a sliding member (703) is slidably connected inside the sliding frame (702), and the telescopic end of the sliding member (703) is fixedly connected to the protective plate (4); two ends of the third buffer tension spring (705) are respectively fixedly connected to the sliding frame (702) and the sliding member (703) for buffering the movement of the sliding member (703); the support member (704) is equidistantly installed on the sliding member (703) for suspending the vehicle driving wheel and supporting and buffering the movement of the sliding member (703).

7. The electric vehicle charging station protection device according to claim 4, characterized in that: The longitudinal hydraulic component (501), the transverse hydraulic component (502) and the flow separation and confluence duct group are in a closed communication, and are filled with hydraulic fluid with a low viscosity and a small deformation coefficient for driving the longitudinal hydraulic component (501) and the transverse hydraulic component (502) to expand and contract with each other. A reinforcing rib (506) is fixedly connected to the upper surface of the steel plate body (1), and the reinforcing rib (506) is used to block the movement of the buffer steel frame group (503) and control the deformation of the buffer steel frame group (503).

8. The electric vehicle charging station protection device according to claim 2, characterized in that: An auxiliary buffer mechanism (6) is arranged inside the prefabricated box (3), and the auxiliary buffer mechanism (6) comprises a second guide buffer assembly for auxiliary buffering of the lifting frame member (507) during lifting, and the second guide buffer assembly comprises a support plate (601) fixedly connected to the inner wall of the prefabricated box (3), and a slide rod (602) is slidably connected inside the support plate (601). The second guide buffer assembly also comprises a moving plate (603) fixedly connected to the slide rod (602), and a second buffer tension spring (604) is fixedly connected to a side of the moving plate (603) close to the support plate (601). The other end of the second buffer tension spring (604) passes through the support plate (601) and is fixedly connected to the inner wall of the prefabricated box (3) through a fixed block. The second buffer tension spring (604) is used to buffer the sliding movement of the slide rod (602) inside the support plate (601) through the movable plate (603) and the fixed block. One end of the slide rod (602) away from the movable plate (603) is hinged to a linkage rod (605) through a pin shaft. The other end of the linkage rod (605) is hinged to the bottom surface of the lifting frame component (507) through a pin shaft to transmit the lifting force of the lifting frame component (507) to the second guide buffer component.

9. An electric vehicle charging station protection method, based on the electric vehicle charging station protection device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: When the charging pile body is at risk of being hit by a vehicle, the buffer steel frame group will first be hit by the vehicle and move axially. When the buffer steel frame group moves, the impact force is offset based on the buffering effect of the first guide buffer component; S2: When the buffer steel frame group is hit by a vehicle, the transmission assembly transmits the displacement caused by the collision to the lifting frame component to lower the charging pile body; S3: The charging pile body descends, and the linkage rod drives the second guide buffer assembly to move. By blocking the charging pile body from descending, the transmission assembly indirectly blocks the movement trend of the buffer steel frame group, further offsetting the impact force; S4: When the impact force of the vehicle is large, the buffer steel frame group moves to the maximum stroke, the charging pile body moves to the bottom of the prefabricated box, the elastic claws are limited, and the charging pile body is completely retracted into the prefabricated box, sealing and isolating the charging pile body; S5: When the impact force of the vehicle further increases, the buffer steel frame assembly is deformed or broken, the vehicle continues to move forward and hits the third guide buffer assembly, the third guide buffer assembly rotates and becomes horizontal, the vehicle falls on the third guide buffer assembly and the chassis contacts the third guide buffer assembly, the support member cooperates with the third guide buffer assembly to support the vehicle and suspend the vehicle driving wheels, the vehicle loses forward momentum, the guard plate blocks the vehicle from moving forward, and cooperates with the third guide buffer assembly to buffer the vehicle inertia, and the vehicle stops moving.

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