Grounding device of charging pile
By adopting an n-shaped grounding rod and protection structure in the charging pile, the problem of the charging pile grounding circuit being susceptible to environmental impact when installed outdoors, achieving higher service life and safety.
Patent Information
- Application Number
- CN202421517674.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-30
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-06-30
AI Technical Summary
When the grounding circuit of existing charging piles is installed outdoors, it is susceptible to impact, rainwater and other environments, resulting in poor contact between the ground rod and the ground or ground wire, affecting the long-term and stable operation of the grounding circuit of the charging pile.
The grounding rod with an n-shaped structure is adopted, and through the structures such as the fixed rod, pressure plate, insert rod and protective shell, the stable connection between the grounding wire and the grounding rod is ensured. At the same time, the grounding wire and grounding rod are used to protect the grounding wire and grounding rod and prevent external influences.
It improves the service life and safety of the charging pile grounding circuit, ensures the grounding stability of the charging pile, and reduces the risk of electric shock accidents caused by poor grounding.
Smart Images
Figure CN222763198U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of charging pile grounding, and in particular to a grounding device for a charging pile. Background Art
[0002] In order to promote the development of urban transportation in the direction of low-carbon, green and environmentally friendly, it is necessary to alleviate the environmental pollution and energy pressure brought by traditional fuel vehicles, and instead advocate the use of new energy vehicles as our travel vehicles, among which electric vehicles are a major form of new energy vehicles. In order to ensure that the use of electric vehicles is more convenient, charging piles are installed in public buildings and residential parking lots or charging stations to provide power replenishment for electric vehicles. The function of charging piles is similar to that of gas pumps in gas stations, which can charge various models of electric vehicles according to different voltage levels. The working principle of the charging pile is to directly connect the input end of the charging pile to the AC power grid, and then the output end of the charging pile is equipped with a charging plug. As long as the charging plug is plugged into the charging interface of the electric vehicle, the electric vehicle can be charged and replenished.
[0003] With the increase in the charging speed of electric vehicles and the large-scale investment and application of charging piles, it is becoming increasingly important to ensure the safety of charging facilities. For the safety of the use of charging piles, the charging piles must be equipped with grounding lines during the installation phase to keep the charging piles running in a safe circuit environment to prevent electric shock accidents caused by the charging pile shell being charged. In addition, the electrical interference energy generated by the electrical equipment inside the charging pile is transmitted to the ground through the grounding line, thereby reducing the impact of the electrical interference energy on the electrical equipment inside the charging pile. The grounding line mainly includes grounding wires and grounding rods. The grounding rods are designed based on the theoretical basis of improving the internal conductivity of the grounding body and reducing the external soil resistivity of the grounding body. By inserting the grounding rod into the ground and wrapping the two sides of the grounding wire around the grounding end of the charging facility and the grounding rod respectively, the grounding end of the charging pile can be connected to the ground, thereby effectively improving the safety of the charging pile when in use. However, since most charging piles are installed outdoors, directly inserting the exposed grounding rod into the ground will expose the connection between the grounding rod and the grounding wire. Therefore, the grounding rod may be affected by impact, rain, humidity and other environmental factors, which may cause poor contact between the grounding rod and the ground or grounding wire, thereby affecting the long-term stable operation of the grounding circuit of the charging pile. Therefore, the grounding protection of the charging pile needs to be improved, which will help to increase the service life of the charging pile grounding line, meet the safety requirements of the charging pile, and improve the market acceptance of the charging pile. Summary of the invention
[0004] In view of the deficiencies in the prior art, the utility model provides a grounding device for a charging pile, which helps to improve the service life and safety of the grounding circuit of the charging pile, and is used to overcome the defects in the prior art.
[0005] The technical solution adopted by the utility model is: a grounding device for a charging pile, comprising a grounding rod of an N-shaped structure, a fixing rod is arranged above the grounding rod, the bottom end of the fixing rod is installed on the grounding rod, a pressure plate is arranged above the fixing rod, a plug rod is arranged on the side of the pressure plate close to the fixing rod, the top of the plug rod is installed on the pressure plate, a plug hole is opened in the middle and upper part of the fixing rod, the plug rod is sleeved in the plug hole, the tops of the pressure plate and the fixing rod are respectively sleeved with flanges, bolts are passed through the flanges, nuts are threadedly sleeved on the bolts, the flange sleeved on the pressure plate and the flange sleeved on the fixing rod are both pressed and fixed on the bolts through nuts, the pressure plate is sleeved with a protective shell, and the middle and upper parts of the fixing rod and the grounding rod are both sleeved in the protective shell.
[0006] Preferably, the protective shell includes a shell one with a bottom opening and a shell two with a bottom opening, the shell one adopts a barrel-shaped structure, the bottom end of the shell one is installed on the top surface of the shell two, a connecting hole is provided on the top of the shell two, and the shell two is connected to the shell one through the connecting hole, the pressure plate, flange plate and fixing rod are all mounted in the shell one, and the upper and middle parts of the grounding rod are mounted in the shell two.
[0007] Preferably, a fixing tube is arranged above the shell one, and the bottom end of the fixing tube is installed on the shell one. A through hole is opened at the top of the shell one, and the shell one is connected with the fixing tube through the through hole. A pressure cap is threadedly sleeved on the fixing tube, and the pressure cap adopts an inverted barrel structure. A protective sleeve made of elastic material is sleeved on the pressure cap, and the bottom end of the protective sleeve is in contact with the top end of the fixing tube. The shape of the protective sleeve adopts a truncated cone structure, and the outer diameter of the bottom end of the protective sleeve is not less than the inner diameter of the fixing tube. A sleeve hole is opened at the top of the pressure cap, and the aperture of the sleeve hole gradually increases in the direction approaching the shell one. The sleeve hole is sleeved on the protective sleeve, and the top aperture of the sleeve hole is not less than the outer diameter of the top end of the protective sleeve, and the bottom aperture of the sleeve hole is not larger than the outer diameter of the middle and lower part of the protective sleeve.
[0008] Preferably, a through hole is provided on the pressure plate, and the through hole is opened along the top of the pressure plate to the bottom end of the insertion rod, and a through groove is provided on one side of the insertion rod, and the through groove is connected to the through hole.
[0009] Preferably, the diameter of the plug rod matches the aperture of the jack, a guide hole is provided on the top of the fixing rod, the aperture of the guide hole gradually decreases in the direction approaching the grounding rod, and the bottom of the guide hole is connected to the jack.
[0010] Preferably, a first plug is provided at the bottom end of the grounding rod, the first plug adopts a conical structure, the top end of the first plug is installed on the grounding rod, and a first barb groove is provided at the bottom of the grounding rod, and the groove diameter of the first barb groove gradually increases along the direction approaching the first plug.
[0011] Preferably, a fixing ring is provided on one side of the protective shell, and the fixing ring is installed on the outer wall of the protective shell. A support rod is movably sleeved inside the fixing ring. A threaded hole is opened on the side wall of the fixing ring, and the threaded hole is connected to the inner cavity of the fixing ring. A screw is threadedly sleeved inside the threaded hole, and the support rod is pressed onto the fixing ring by the screw.
[0012] Preferably, a second plug is provided at the bottom end of the support rod, the second plug adopts a conical structure, the top end of the second plug is installed on the support rod, and a second barb groove is opened at the bottom of the support rod, and the groove diameter of the second barb groove gradually increases along the direction approaching the second plug.
[0013] The beneficial effects of the utility model are as follows: first, the utility model adopts an N-shaped structure through the grounding rod, and both sides of the grounding rod are penetrated into the ground to increase the contact area between the grounding rod and the soil, thereby improving the grounding effect of the grounding rod; by winding one side of the grounding wire on the plug rod, using bolts to pass through the flange, and then tightening the nut on the bolt, the grounding wire wrapped on the fixed rod is pressed between the pressure plate and the fixed rod, thereby ensuring that one side of the grounding wire is connected to the fixed rod, and then ensuring that the grounding wire is connected to the grounding rod, so as to ensure the grounding stability of the charging pile; and the utility model protects the exposed grounding rod and the connection between the grounding wire and the fixed rod through a protective shell mounted on the pressure plate to prevent touching the fixed rod or the grounding rod, thereby facilitating long-term use of the grounding rod.
[0014] Secondly, the utility model uses a through hole opened at the top of the shell one to allow the grounding wire to pass through the through hole from the shell one, and by sheathing the grounding wire in the protective sleeve, the protective sleeve made of elastic material is used to protect the part of the grounding wire that passes through the through hole, and the pressure cover is screwed and installed on the fixed tube, so that the protective sleeve is fixed to the fixed tube; at the same time, the protective sleeve is squeezed and deformed by the sleeve hole, so that the inner cavity channel of the protective sleeve is concave, so that the protective sleeve presses against the grounding wire sheathed in the protective sleeve, thereby pressing the grounding wire into the protective sleeve to improve the fixing stability of the grounding wire. In addition, the utility model uses a through hole opened on the pressure plate and a through slot opened on the plug rod, so that the grounding wire passes through the through hole and the through slot, so that the grounding wire can be wrapped around the side wall of the plug rod.
[0015] Thirdly, the utility model provides a guide hole at the top of the fixed rod, so that when the rod is inserted into the jack, the rod can be guided by the guide hole, so as to facilitate the insertion of the rod into the jack, and a part of the grounding wire wrapped around the rod is located in the guide hole, so that a part of the grounding wire contacts the hole wall of the guide hole, thereby increasing the contact area between the grounding wire and the fixed rod, and further improving the conductive effect between the grounding wire and the fixed rod. In addition, the utility model provides a first plug at the bottom end of the grounding rod, which facilitates the first plug and the grounding rod to penetrate the ground, and provides a first barbed groove at the bottom of the grounding rod to increase the contact area between the grounding rod and the ground, and improve the firmness of the grounding rod fixed on the ground, so as to prevent the grounding rod from being easily pulled out of the ground.
[0016] In addition, the utility model penetrates the bottom of the support rod into the ground, and uses screws to press the support rod onto the fixing ring to fix the protective shell on the ground. Therefore, when the utility model is hit, the support rod buffers the impact force caused by the impact to reduce the impact force on the ground rod. In addition, the utility model provides a second plug to facilitate the penetration of the second plug and the support rod into the ground, and a second barbed groove is provided at the bottom of the support rod to improve the firmness of the support rod fixed on the ground and prevent the support rod from being easily pulled out of the ground. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of the utility model.
[0018] Figure 2 for Figure 1 A magnified schematic diagram of center A.
[0019] Figure 3 It is a three-dimensional schematic diagram of the utility model.
[0020] Figure 4 It is an exploded view of the assembly of the ground rod and the pressure plate in the utility model.
[0021] Figure 5 It is an exploded view of the assembly of the protective shell, the pressure cover and the support rod in the utility model.
[0022] Figure 6 It is a schematic diagram of the assembly of the pressure plate, the plug rod and the flange plate of the utility model. DETAILED DESCRIPTION
[0023] like Figures 1 to 6As shown, a grounding device for a charging pile comprises a grounding rod 1 of an N-shaped structure, a fixing rod 2 is arranged above the grounding rod 1, the bottom end of the fixing rod 2 is mounted on the grounding rod 1, a pressure plate 3 is arranged above the fixing rod 2, a plug rod 4 is arranged on the side of the pressure plate 3 close to the fixing rod 2, the top of the plug rod 4 is mounted on the pressure plate 3, a plug hole 5 is opened in the middle and upper part of the fixing rod 2, the plug rod 4 is sleeved in the plug hole 5, the tops of the pressure plate 3 and the fixing rod 2 are respectively sleeved with flanges 6, bolts 7 are passed through the flanges 6, nuts 8 are threadedly sleeved on the bolts 7, the flanges 6 sleeved on the pressure plate 3 and the flanges 6 sleeved on the fixing rod 2 are both fixed to the bolts 7 by nuts 8, the pressure plate 3 is sleeved with a protective shell 9, the fixing rod 2 and the middle and upper parts of the grounding rod 1 are both sleeved in the protective shell 9. The grounding rod 1 adopts an N-shaped structure, and both sides of the grounding rod 1 are penetrated into the ground to increase the contact area between the grounding rod 1 and the soil, thereby improving the grounding effect of the grounding rod 1; and then one side of the grounding wire is wrapped around the plug rod 4, and the bolt 7 is passed through the flange 6, and the nut 8 is tightened on the bolt 7, so that the grounding wire wrapped around the fixed rod 2 is pressed between the pressure plate 3 and the fixed rod 2, thereby ensuring that one side of the grounding wire is connected to the fixed rod 2, and then ensuring that the grounding wire is connected to the grounding rod 1, so as to ensure the grounding stability of the charging pile. The protective shell 9 set on the pressure plate 3 protects the exposed grounding rod 1 and the connection between the grounding wire and the fixed rod 2 to prevent touching the fixed rod 2 or the grounding rod 1, so as to facilitate the long-term use of the fixed rod 2 and the grounding rod 1 to connect the grounding end of the charging pile.
[0024] In this embodiment, the protective shell 9 includes a shell 1 9-1 with a bottom opening and a shell 2 9-2 with a bottom opening. The shell 1 9-1 adopts a barrel-shaped structure. The bottom end of the shell 1 9-1 is installed on the top surface of the shell 2 9-2. A connecting hole is opened on the top of the shell 2 9-2. The shell 2 9-2 is connected to the shell 1 9-1 through the connecting hole. The pressure plate 3, flange 6 and fixing rod 2 are all mounted in the shell 1 9-1, and the upper and middle parts of the grounding rod 1 are mounted in the shell 2 9-2, so that the protective shell 9 can be used to protect the grounding rod 1, the fixing rod 2, the flange 6 and the pressure plate 3, and prevent contact with the fixing rod 2, the grounding rod 1, the flange 6 and the pressure plate 3.
[0025] Specifically, a fixing tube 10 is arranged above the shell 9-1, and the bottom end of the fixing tube 10 is installed on the shell 9-1. A through hole 11 is opened at the top of the shell 9-1, and the shell 9-1 is connected with the fixing tube 10 through the through hole 11. A pressure cap 12 is threadedly sleeved on the fixing tube 10, and the pressure cap 12 adopts an inverted barrel structure. The inner cavity diameter of the pressure cap 12 coincides with the outer diameter of the fixing tube 10. A protective sleeve 13 made of elastic material is sleeved on the pressure cap 12, and the bottom end of the protective sleeve 13 contacts the top end of the fixing tube 10. The shape of the protective sleeve 13 adopts a truncated cone structure, and the outer diameter of the bottom end of the protective sleeve 13 is not less than the inner diameter of the fixing tube 10, and the outer diameter of the top end of the protective sleeve 13 is not greater than the outer diameter of the bottom end of the protective sleeve 13. A sleeve hole 14 is opened at the top of the pressure cap 12, and the sleeve hole 14 The aperture gradually increases in the direction approaching the shell 9-1, and the sleeve hole 14 is sleeved on the protective sleeve 13. The top aperture of the sleeve hole 14 is not less than the outer diameter of the top of the protective sleeve 13, and the bottom aperture of the sleeve hole 14 is not greater than the outer diameter of the middle and lower part of the protective sleeve 13, so that the grounding wire passes through the through hole 11 from the shell 9-1, and the grounding wire is sleeved in the protective sleeve 13, so that the grounding wire is protected by the protective sleeve 13 made of elastic material, and the protective sleeve 13 is fixed to the fixed tube 10 by screwing the pressure cover 12 to install it on the fixed tube 10. At the same time, the protective sleeve 13 is squeezed and deformed by the sleeve hole 14, so that the inner cavity channel of the protective sleeve 13 is recessed, so that the protective sleeve 13 is pressed against the grounding wire sleeved in the protective sleeve 13, so that the grounding wire is pressed and fixed in the protective sleeve 13, so as to improve the fixing stability of the grounding wire.
[0026] Please refer again Figure 3 and 6 A through hole 15 is provided on the pressure plate 3, and the through hole 15 is opened along the top of the pressure plate 3 to the bottom end of the insertion rod 4. A through groove 16 is provided on one side of the insertion rod 4, and the through groove 16 is connected to the through hole 15. The grounding wire passes through the through hole 15 and the through groove 16 so as to wrap the grounding wire around the side wall of the insertion rod 4.
[0027] In this embodiment, the diameter of the plug rod 4 is consistent with the aperture of the socket 5, and a guide hole 17 is opened on the top of the fixing rod 2. The aperture of the guide hole 17 gradually decreases along the direction close to the grounding rod 1, and the bottom of the guide hole 17 is connected to the socket 5, so that when the plug rod 4 is inserted toward the socket 5, the plug rod 4 is guided by the guide hole 17 to facilitate the insertion of the plug rod 4 into the socket 5, and a part of the grounding wire wrapped around the plug rod 4 is located in the guide hole 17, so that a part of the grounding wire contacts the hole wall of the guide hole 17, thereby increasing the contact area between the grounding wire and the fixing rod 2, and then improving the conductive effect between the grounding wire and the fixing rod 2.
[0028] Specifically, a first plug 18 is provided at the bottom end of the grounding rod 1. The first plug 18 adopts a conical structure. The top end of the first plug 18 is installed on the grounding rod 1, so as to facilitate the first plug 18 and the grounding rod 1 to penetrate the ground. A first barb groove 19 is provided at the bottom of the grounding rod 1. The groove diameter of the first barb groove 19 gradually increases along the direction approaching the first plug 18 to increase the contact area between the grounding rod 1 and the ground, thereby improving the grounding effect of the grounding rod 1 and improving the firmness of the grounding rod 1 fixed to the ground to prevent the grounding rod 1 from being easily pulled out of the ground.
[0029] Please refer again Figure 3 and 5 A fixing ring 20 is provided on one side of the protective shell 9, and the fixing ring 20 is installed on the outer wall of the protective shell 9. A support rod 21 is movably sleeved in the fixing ring 20. A threaded hole 22 is opened on the side wall of the fixing ring 20, and the threaded hole 22 is connected to the inner cavity of the fixing ring 20. A screw 23 is sleeved in the threaded hole 22. The support rod 21 is pressed on the fixing ring 20 by the screw 23. The protective shell 9 is fixed to the ground by penetrating the bottom of the support rod 21 into the ground; in order to prevent the support rod 21 from falling off the protective shell 9, a round block is provided on the top of the support rod 21, and the diameter of the round block is not less than the inner cavity diameter of the fixing ring 20, and the round block is installed on the support rod 21.
[0030] Specifically, a second plug 24 is provided at the bottom end of the support rod 21. The second plug 24 adopts a conical structure. The top end of the second plug 24 is installed on the support rod 21, so as to facilitate the second plug 24 and the support rod 21 to penetrate the ground. A second barb groove 25 is provided at the bottom of the support rod 21. The groove diameter of the second barb groove 25 gradually increases in the direction approaching the second plug 24 to improve the firmness of the support rod 21 fixed to the ground and prevent the support rod 21 from being easily pulled out of the ground.
[0031] The assembly and construction method of this product is as follows: Figures 1 to 6As shown, first, after completing the construction of the charging pile, place the grounding rod 1 and the fixing rod 2 on the ground, use a hammer or other tools to knock the grounding rod 1 and the fixing rod 2, so that the middle and lower part of the grounding rod 1 and the first plug 18 penetrate the ground, take out the grounding wire connecting the charging pile and this product, wrap one side of the grounding wire around and fix it to the grounding end of the charging pile, and sequentially put the pressure cap 12, the protective sleeve 13, the protective shell 9 and the pressure plate 3 on the grounding wire, so that the other side of the grounding wire passes through the through groove 16. Then, wrap the other side of the grounding wire around the plug rod 4, and then insert the plug rod 4 into the socket 5, use the bolt 7 to penetrate the flange 6, and use the nut 8 to tighten the bolt 7, so that the grounding wire wrapped on the fixing rod 2 is pressed between the pressure plate 3 and the fixing rod 2, thereby completing the connection between the grounding wire and the fixing rod 2 and the grounding rod 1. Then, buckle the protective shell 9 on the grounding wire onto the pressure plate 3, push the bottom end of the protective cover 13 to contact the fixed tube 10, and tighten the pressure cover 12 onto the fixed tube 10, so that the protective cover 13 is fixed to the fixed tube 10, and the protective cover 13 is pressed against the grounding wire set inside the protective cover 13. Finally, fit the support rod 21 into the fixing ring 20, use a hammer or other tool to hit the support rod 21, so that the middle and lower part of the support rod 21 and the second plug 24 penetrate the ground, and tighten the screw 23 into the threaded hole 22, so that the support rod 21 is pressed and fixed to the fixing ring 20 by the screw 23, so as to complete the construction of this product.
[0032] Through this embodiment, the grounding rod 1 adopts an N-shaped structure, and both sides of the grounding rod 1 are penetrated into the ground to increase the contact area between the grounding rod 1 and the soil, thereby improving the grounding effect of the grounding rod 1. By winding one side of the grounding wire on the plug rod 4, using a bolt 7 to pass through the flange 6, and then tightening the nut 8 on the bolt 7, the grounding wire wrapped on the fixed rod 2 is pressed between the pressure plate 3 and the fixed rod 2, thereby ensuring that one side of the grounding wire is connected to the fixed rod 2, and then ensuring that the grounding wire is connected to the grounding rod 1, so as to ensure the grounding stability of the charging pile, and in this embodiment, the protective shell 9 set on the pressure plate 3 protects the exposed grounding rod 1 and the connection between the grounding wire and the fixed rod 2 to prevent touching the fixed rod 2 or the grounding rod 1, so as to facilitate long-term use of the grounding rod 1.
[0033] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.
Claims
1. A grounding device for a charging pile, characterized in that: The invention comprises an N-shaped grounding rod (1), a fixing rod (2) is arranged above the grounding rod (1), the bottom end of the fixing rod (2) is mounted on the grounding rod (1), a pressure plate (3) is arranged above the fixing rod (2), a plug rod (4) is arranged on the side of the pressure plate (3) close to the fixing rod (2), the top end of the plug rod (4) is mounted on the pressure plate (3), a plug hole (5) is opened in the middle and upper part of the fixing rod (2), the plug rod (4) is sleeved in the plug hole (5), and the pressure plate (3) is provided with a plurality of plug holes (5). The tops of the pressure plate (3) and the fixing rod (2) are respectively provided with flanges (6), bolts (7) are passed through the flanges (6), nuts (8) are threadedly provided on the bolts (7), the flanges (6) provided on the pressure plate (3) and the flanges (6) provided on the fixing rod (2) are both fixed to the bolts (7) by nuts (8), the pressure plate (3) is provided with a protective shell (9), and the fixing rod (2) and the upper and middle parts of the grounding rod (1) are both provided in the protective shell (9).
2. The grounding device of the charging pile according to claim 1, characterized in that: The protective shell (9) comprises a shell one (9-1) with an opening at the bottom and a shell two (9-2) with an opening at the bottom. The shell one (9-1) adopts a cylindrical structure. The bottom end of the shell one (9-1) is mounted on the top surface of the shell two (9-2). The top of the shell two (9-2) is provided with a connecting hole. The shell two (9-2) is connected to the shell one (9-1) through the connecting hole. The pressure plate (3), the flange plate (6) and the fixing rod (2) are all mounted in the shell one (9-1). The upper and middle parts of the grounding rod (1) are mounted in the shell two (9-2).
3. The grounding device of the charging pile according to claim 2, characterized in that: A fixing tube (10) is arranged above the shell one (9-1), the bottom end of the fixing tube (10) is mounted on the shell one (9-1), a through hole (11) is opened at the top end of the shell one (9-1), the shell one (9-1) is connected to the fixing tube (10) through the through hole (11), a pressure cap (12) is threadedly sleeved on the fixing tube (10), the pressure cap (12) adopts an inverted barrel structure, a protective sleeve (13) made of elastic material is sleeved on the pressure cap (12), the bottom end of the protective sleeve (13) is in contact with the top end of the fixing tube (10), The protective sleeve (13) is in contact with the housing (9-1), the outer shape of the protective sleeve (13) adopts a truncated cone structure, the outer diameter of the bottom end of the protective sleeve (13) is not less than the inner diameter of the fixed tube (10), the top end of the gland (12) is provided with a sleeve hole (14), the aperture of the sleeve hole (14) gradually increases along the direction close to the housing (9-1), the sleeve hole (14) is sleeved on the protective sleeve (13), the top aperture of the sleeve hole (14) is not less than the outer diameter of the top end of the protective sleeve (13), and the bottom aperture of the sleeve hole (14) is not greater than the outer diameter of the middle and lower part of the protective sleeve (13).
4. The grounding device of the charging pile according to claim 1, characterized in that: The pressure plate (3) is provided with a through hole (15), which extends from the top of the pressure plate (3) to the bottom of the insertion rod (4). A through groove (16) is provided on one side of the insertion rod (4), and the through groove (16) is connected to the through hole (15).
5. The grounding device of the charging pile according to claim 1, characterized in that: The diameter of the insertion rod (4) matches the aperture of the insertion hole (5), a guide hole (17) is provided at the top of the fixing rod (2), the aperture of the guide hole (17) gradually decreases in a direction approaching the grounding rod (1), and the bottom of the guide hole (17) is connected to the insertion hole (5).
6. The grounding device of the charging pile according to claim 1, characterized in that: A first plug (18) is arranged at the bottom end of the grounding rod (1), the first plug (18) adopts a conical structure, the top end of the first plug (18) is mounted on the grounding rod (1), and a first barb groove (19) is provided at the bottom of the grounding rod (1), the groove diameter of the first barb groove (19) gradually increases in a direction approaching the first plug (18).
7. The grounding device of the charging pile according to claim 1, characterized in that: A fixing ring (20) is provided on one side of the protective shell (9). The fixing ring (20) is mounted on the outer wall of the protective shell (9). A support rod (21) is movably sleeved inside the fixing ring (20). A threaded hole (22) is provided on the side wall of the fixing ring (20). The threaded hole (22) is connected to the inner cavity of the fixing ring (20). A screw (23) is sleeved inside the threaded hole (22). The support rod (21) is pressed onto the fixing ring (20) by the screw (23).
8. The grounding device of the charging pile according to claim 7, characterized in that: A second plug (24) is arranged at the bottom end of the support rod (21), the second plug (24) adopts a conical structure, the top end of the second plug (24) is mounted on the support rod (21), and a second barb groove (25) is provided at the bottom of the support rod (21), the groove diameter of the second barb groove (25) gradually increases in a direction approaching the second plug (24).