An automatic clamping fixture for charging piles

Abstract

This application discloses an automatic clamping fixture for charging piles, including a base plate, a locking assembly, and a resetting assembly. The base plate is fixedly installed, and the resetting assembly is installed between the locking assembly and the base plate. The upper part of the base plate is suitable for placing the main frame of the charging pile, and the locking assembly is installed on the base plate. The locking assembly is initially in an open state. When the main frame of the charging pile is placed on the base plate, the resetting assembly, under the gravity of the main frame, drives the locking assembly to close and lock the main frame. When the main frame of the charging pile is removed from the base plate, the locking assembly is suitable for opening and releasing the locking of the main frame under the resetting action of the resetting assembly. The beneficial effects of this application are: by setting the locking assembly and the elastic assembly installed on the base plate, the locking assembly can automatically lock and unlock the main frame of the charging pile during installation and removal. The whole process does not require cumbersome installation operations on the main frame of the charging pile, and can be quickly installed or removed.

Description

Technical Field

[0001] This application relates to the field of charging piles, and in particular to an automatic clamping fixture for charging piles. Background Technology

[0002] In the manufacturing process of charging piles, assembly tooling is a crucial step in ensuring the structural accuracy and overall quality of the charging pile's main frame. Pre-set positioning pins, clamps, and guide grooves enable rapid alignment and temporary fixation between main frame components such as side plates, crossbeams, and mounting plates. The reliability, repeatability, and ease of operation of the entire tooling system directly determine the consistency and production efficiency of the charging pile's main frame assembly.

[0003] Currently, the assembly of traditional charging pile main frames often relies on general-purpose tooling fixtures or manual positioning, which presents challenges in component alignment and necessitates repeated adjustments. Manual alignment is not only time-consuming and labor-intensive, but also prone to misalignment or gaps between components due to visual errors or uneven clamping force, affecting structural rigidity. Furthermore, the fixing of the charging pile main frame often requires manual clamping and temporary spot welding, resulting in high labor intensity, slow assembly pace, and difficulty in ensuring dimensional uniformity across batches. Frequent manual intervention also increases the risk of surface scratches or deformation of components. Therefore, a new solution is urgently needed. Utility Model Content

[0004] The purpose of this application is to provide an automatic clamping fixture for charging piles that can solve at least one of the defects in the above-mentioned background technology.

[0005] To achieve at least one of the above objectives, this application provides an automatic clamping fixture for charging piles, including a base plate, a locking assembly, and a reset assembly. The base plate is fixedly disposed, and the reset assembly is installed between the locking assembly and the base plate. The upper part of the base plate is adapted to place the main frame of the charging pile, and the locking assembly is installed on the base plate. The locking assembly is initially in an open state. When the main frame of the charging pile is placed on the base plate, the reset assembly, under the gravity of the main frame, drives the locking assembly to close and lock the main frame of the charging pile. When the main frame of the charging pile is detached from the base plate, the locking assembly is adapted to open and release the locking of the main frame of the charging pile under the reset action of the reset assembly.

[0006] Preferably, the locking assembly includes a translational member and multiple rotating members; the rotating members are rotatably mounted on the base plate via their central portion, and the upper end of the rotating members is used to lock the main frame of the charging pile. The lower ends of the multiple rotating members cooperate with the translational member through a traction structure. When the main frame of the charging pile is placed on the base plate, the translational member is adapted to move vertically under the compression of the main frame of the charging pile, and then the traction structure drives each of the rotating members to rotate around the installation position toward the main frame of the charging pile until locking.

[0007] Preferably, the rotating component includes a first segment and a second segment, which are arranged at an angle. The first segment is used to lock the main frame of the charging pile. The traction structure includes a sliding rod and a sliding groove. The sliding groove is disposed in the second segment, and the sliding rod is disposed in the translational component. Alternatively, the sliding groove is disposed in the translational component, and the sliding rod is disposed in the rotating component. When the translational component moves vertically, the rotating component is driven to rotate around the installation position by the relative sliding of the sliding rod along the sliding groove.

[0008] Preferably, the included angle between the first segment and the second segment is in the range of 90°-145°.

[0009] Preferably, the number of the rotating components is at least one pair, and the rotating components are symmetrically arranged in pairs on both sides of the base plate.

[0010] Preferably, at least one locking head is provided at the end of the first segment away from the second segment; the locking head is adapted to engage with the locking groove on the main frame of the charging pile.

[0011] Preferably, the reset assembly is installed between the translational member and the base plate; when the main frame of the charging pile is placed and installed, the main frame of the charging pile is adapted to press the reset assembly to drive the translational member to move vertically downward; when the main frame of the charging pile is removed from the base plate, the main frame of the charging pile releases the pressure on the reset assembly, and then the reset assembly drives the translational member to move vertically upward under the action of the reset spring force, so as to release the locking of the rotating member on the main frame of the charging pile.

[0012] Preferably, the reset assembly includes a reset plate and an elastic element; the upper end of the reset plate is used to support the main frame of the charging pile, and the reset plate is connected to the translational element through its lower end; the first end of the elastic element is connected to the reset plate, and the second end of the elastic element is connected to the base plate.

[0013] Preferably, the reset plate is disposed above the base plate, the translational member is disposed below the base plate, and the lower end of the reset plate is fixedly connected to the translational member by a connecting rod; the connecting rod passes through the base plate, and the elastic member is a spring and is sleeved on the connecting rod.

[0014] Preferably, the upper part of the base plate is provided with multiple positioning rods, which are adapted to cooperate with the positioning holes on the main frame of the charging pile for installation and positioning.

[0015] Compared with the prior art, the beneficial effects of this application are as follows: In the technical solution of this application, the locking component installed on the base plate locks the main frame of the charging pile under the gravity of the main frame when the charging pile is installed on the base plate. The elastic component generates elastic force to drive the locking component to move and unlock it from the main frame when the charging pile is removed. The whole process does not require complicated installation operations on the main frame of the charging pile, and can be quickly installed or disassembled. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the unlocked state of this utility model.

[0018] Figure 3 This is a schematic diagram of the locking state of this utility model.

[0019] In the diagram: base plate 1, positioning rod 110, locking assembly 2, translational component 210, rotating component 220, first section 221, second section 222, sliding groove 230, sliding rod 240, locking head 250, reset assembly 3, reset plate 310, elastic component 320, connecting rod 330, charging pile main frame 4, locking groove 410. Detailed Implementation

[0020] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0021] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0022] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0023] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0024] A preferred embodiment of this application, such as Figure 1 As shown, an automatic clamping fixture for charging piles includes a base plate 1 and a locking assembly 2. The base plate 1 is fixedly installed, and the upper part of the base plate 1 is suitable for placing the main frame 4 of the charging pile. The locking assembly 2 is installed on the base plate 1, and the reset assembly 3 is installed between the locking assembly 2 and the base plate 1. The locking assembly 2 is initially in an open state. When the main frame 4 of the charging pile is placed on the base plate 1, the reset assembly 3 drives the locking assembly 2 to close and lock the main frame 4 of the charging pile under the gravity of the main frame 4 of the charging pile. When the main frame 4 of the charging pile is removed from the base plate 1, the locking assembly 2 is suitable for opening and releasing the locking of the main frame 4 of the charging pile under the reset action of the reset assembly 3.

[0025] It should be understood that the traditional assembly of the charging pile main frame 4 requires manual positioning and temporary connection by operators. The installation quality of the charging pile main frame 4 depends entirely on the professional skill level of the operators, which can easily lead to deviations in the installation position. Furthermore, the installation process involves operations such as temporary spot welding, resulting in low installation efficiency and high labor intensity. Most importantly, the traditional installation method makes it difficult to achieve standardized procedures. Due to differences in operation among different operators, the installation quality of the charging pile main frame 4 varies, thus affecting the assembly quality and efficiency of the charging pile main frame 4. The automatic clamping fixture of this application only requires placing the charging pile main frame 4 on top of it to automatically clamp and fix the charging pile main frame 4, eliminating the need for complex temporary installation operations for the entire charging pile main frame 4. This greatly simplifies the temporary installation process and improves the installation quality and positioning accuracy of the charging pile main frame 4, forming a standardized operation process for the assembly of the charging pile main frame 4.

[0026] It should also be noted that the base plate 1 is anchored to the ground or wall; while the locking component 2 is installed on the base plate 1. When the operator places the charging pile main frame 4 on the base plate 1, the locking component 2 will retract and lock the charging pile main frame 4 under the gravity of the charging pile main frame 4. The conversion process of the gravity of the charging pile main frame 4 to the retraction action of the locking component 2 can be achieved in various forms, such as using an internal control circuit. When the charging pile main frame 4 is placed on the base plate 1 and generates pressure, the control circuit connects to control the locking component 2 to retract and lock the charging pile main frame 4. Alternatively, a mechanical structure can be used. Through a linkage or other structure, the locking component 2 will deform under the action of the charging pile main frame 4, thereby retracting and locking the charging pile main frame 4. When the charging pile main frame 4 is hoisted and removed from the base plate 1, the locking component 2 is suitable for opening and unlocking the charging pile main frame 4 under the reset action of the reset component 3, thereby improving assembly efficiency and reducing the temporary installation work intensity of the charging pile main frame 4 for the operator.

[0027] It is understandable that the locking component 2 is initially in the open state. Only when the main frame of the charging pile 4 is placed on the base plate 1 will the locking component 2 be moved to lock the main frame of the charging pile 4. This working mechanism makes the placement process of the main frame of the charging pile 4 and the locking process seamlessly connected and easy to operate. In addition, in the initial state, the locking component 2 is in the open state, which leaves enough operating space for the placement of the main frame of the charging pile 4, making it easy for operators to accurately and without interference place the main frame of the charging pile 4 on the base plate 1, which greatly improves the reliability of installation.

[0028] Specifically, a preferred embodiment of this application, such as Figure 1-3 As shown, the upper part of the base plate 1 is provided with multiple positioning rods 110. The positioning rods 110 are suitable for installation and positioning by cooperating with the positioning holes on the charging pile main frame 4. During the cooperation of the locking assembly 2, the charging pile main frame 4 needs to be accurately positioned. Through the multiple positioning rods 110 provided on the upper part of the base plate 1, the positioning holes at the bottom of the charging pile main frame 4 are precisely matched with the positioning rods 110 to position the charging pile main frame 4 first. Then, the locking assembly 2 can lock the charging pile main frame 4 through precise mechanical structural deformation. If there is no priority positioning of the positioning rods 110, the relative position of the locking assembly 2 and the charging pile main frame 4 may deviate during the installation of the charging pile main frame 4, and it may not be able to cooperate and lock well with the charging pile main frame 4.

[0029] The structure of the locking component 2 should ensure that an automatic and complete clamping operation is completed during the process of placing the charging pile main frame 4 onto the base plate 1. A preferred embodiment of this application is as follows: Figure 1-3As shown, the locking assembly 2 includes a translational member 210 and multiple rotating members 220. The rotating members 220 are rotatably mounted on the base plate 1 through the middle. The upper end of the rotating members 220 is used to lock the charging pile main frame 4. The lower ends of the multiple rotating members 220 cooperate with the translational member 210 through a traction structure. When the charging pile main frame 4 is placed on the base plate 1, the translational member 210 is adapted to move vertically under the compression of the charging pile main frame 4, and then the traction structure drives each rotating member 220 to rotate around the installation position towards the charging pile main frame 4 until it is locked.

[0030] It should be understood that the locking assembly 2 includes multiple rotating parts 220. The multiple rotating parts 220 can clamp the charging pile main frame 4 from different directions in all directions, thereby making the fixing of the charging pile main frame 4 more reliable and firm. The multiple rotating parts 220 need to perform clamping operations synchronously when the charging pile main frame 4 is placed on the base plate 1. Therefore, the multiple rotating parts 220 are connected to each other through translational parts 210. Under the driving action of translational parts 210, the multiple rotating parts 220 can perform synchronous rotation and locking operations.

[0031] It should also be noted that the lower end of the rotating part 220 cooperates with the translational part 210 through a traction structure. Since the translational part 210 can only move vertically under the pressure of the charging pile main frame 4, while the rotating part 220 needs to rotate to rotate its upper end toward the charging pile main frame 4 to lock the charging pile main frame 4, the vertical translational motion of the translational part 210 needs to be converted into the rotational motion of the rotating part 220 through the traction structure.

[0032] It is understandable that the compression of the translational component 210 by the charging pile main frame 4 can be either a direct contact between the charging pile main frame 4 and the translational component 210, resulting in a vertical compression action, or the presence of other structures between the charging pile main frame 4 and the translational component 210, resulting in a vertical compression action on the translational component 210 through indirect contact with the charging pile main frame 4. Different structural designs can be made depending on the different positions of the translational component 210, the base plate 1, and the rotating component 220.

[0033] The coordination between the structure of the rotating member 220 and the traction structure is key to converting the translational motion of the translational member 210 into the rotational motion of the rotating member 220. A preferred embodiment of this application is as follows: Figure 1-3As shown, the rotating component 220 includes a first segment 221 and a second segment 222, which are arranged at an angle. The first segment 221 is used to lock the charging pile main frame 4. The traction structure includes a sliding rod 240 and a sliding groove 230. The sliding groove 230 is disposed in the second segment 222, and the sliding rod 240 is disposed in the translation component 210. Alternatively, the sliding groove 230 is disposed in the translation component 210, and the sliding rod 240 is disposed in the rotating component 220. When the translation component 210 moves vertically, the rotating component 220 is driven to rotate around the installation position by the relative sliding of the sliding rod 240 along the sliding groove 230.

[0034] It should be noted that the first segment 221 and the second segment 222 of the rotating component 220 are set at an angle. Therefore, when the second segment 222 rotates, it can drive the first segment 221 to rotate, thereby locking the charging pile main frame 4. The second segment 222 cooperates with the translational component 210 through a traction structure, and cooperates with the sliding rod 240 and the sliding groove 230. When the sliding rod 240 slides in the sliding groove 230, combined with the angled design of the rotating component 220, the vertical translational motion of the translational component 210 can be converted into the rotational motion of the rotating component 220.

[0035] It is understandable that the design of the sliding rod 240 and the sliding groove 230 can be such that the sliding rod 240 is set on the translation member 210 and the sliding groove 230 is set on the second segment 222; or the sliding rod 240 is set on the second segment 222 and the sliding groove 230 is set on the translation member 210. The structural principles of the two are the same, but the translation member 210 needs to connect all the rotating members 220. If multiple sliding grooves 230 are opened in its cross section, the structural strength will decrease significantly. Therefore, in this embodiment, it is preferable to open the sliding groove 230 in the second segment 222 and set the sliding rod 240 on the translation member 210.

[0036] Specifically, the included angle between the first segment 221 and the second segment 222 is 90°-145°. This included angle range takes into account the stroke, mechanical transmission efficiency and structural space layout. When the included angle is close to 90°, the second segment 222 can rotate under the drive of the translation member 210. However, when the included angle is greater than 145°, the motion conversion is too slow. The translation member 210 needs a very large motion distance to convert into a sufficient rotation angle for the rotating member 220. Therefore, in this embodiment, the included angle between the first segment 221 and the second segment 222 is preferably 90°-145°.

[0037] The number and position of the rotating parts 220 affect the locking effect on the main frame 4 of the charging pile. A preferred embodiment of this application is as follows: Figure 1-3 As shown, the number of rotating parts 220 is at least one pair, and the rotating parts 220 are symmetrically arranged in pairs on both sides of the base plate 1.

[0038] It should be noted that the rotating parts 220 are symmetrically arranged in pairs on both sides of the base plate 1, which can ensure that the main frame 4 of the charging pile is subjected to more balanced forces during the locking process and the installation process is more stable. The symmetrical layout allows the gravity of the main frame 4 of the charging pile to drive the translational part 210, and then the translational part 210 converts the translational motion into the synchronous and symmetrical locking action of the rotating parts 220 on both sides through the traction structure. This effectively avoids the uneven force phenomenon caused by unilateral locking. Uneven force due to unilateral locking may cause the main frame 4 of the charging pile to tilt or even cause additional stress problems in the internal structure. The synchronous and symmetrical locking action of the rotating parts 220 on both sides makes the installation process of the main frame 4 of the charging pile safer and more reliable.

[0039] Understandably, the symmetrical rotating component 220 allows the charging pile main frame 4 to be placed without having to face a specific direction, thus providing a certain degree of fault tolerance. Furthermore, the simultaneous locking on both sides enables the charging pile main frame 4 to be corrected by symmetrical locking force even when it is placed slightly off-center. This reduces the precision requirements for operators when placing the charging pile main frame 4, improves installation efficiency, and simplifies the installation and adjustment process.

[0040] The locking method of the main frame 4 of the charging pile in the first paragraph 221 determines the reliability of the locking. A preferred embodiment of this application is as follows: Figure 1 As shown, at least one locking head 250 is provided at the end of the first segment 221 away from the second segment 222; the locking head 250 is adapted to lock into the locking groove 410 on the charging pile main frame 4.

[0041] It should be noted that a locking head 250 is installed on the first section 221. The locking head 250 cooperates with the locking groove 410 preset on the charging pile main frame 4 to convert the horizontal rotational force into a vertical mechanical interlock, which can effectively resist the risk of loosening caused by unexpected factors such as site vibration and ensure the reliability of locking.

[0042] It is understandable that one or more locking heads 250 can be set on the first segment 221 to cooperate with one or more locking slots 410 on the charging pile main frame 4. Increasing the number of locking heads 250 can increase the reliability of the locking effect, while the precision of using a single locking head 250 can be relaxed, which is more suitable for the operation process of quick installation and avoids difficulty in normal installation due to small errors.

[0043] It is also understandable that the locking head 250 and the locking groove 410, through their cooperation, achieve standardization of the interface between the charging pile main frame 4 and the automatic clamping fixture. By simply pre-setting a standard-sized locking groove 410 on the bottom of the charging pile main frame 4, it can be quickly installed with all automatic clamping fixtures of the same specifications, greatly simplifying the installation process of the charging pile main frame 4 and increasing the flexibility of the cooperation between the charging pile main frame 4 and the automatic clamping fixture.

[0044] The structure of the reset component 3 is crucial for enabling the locking component 2 to automatically unlock during the hoisting and dismantling process of the charging pile main frame 4. A preferred embodiment of this application is as follows: Figure 1-3 As shown, the reset component 3 is installed between the translation member 210 and the base plate 1. When the charging pile main frame 4 is placed and installed, the charging pile main frame 4 is adapted to press the reset component 3 to drive the translation member 210 to move vertically downward. When the charging pile main frame 4 is removed from the base plate 1, the charging pile main frame 4 releases the pressure on the reset component 3, and then the reset component 3 drives the translation member 210 to move vertically upward under the action of the reset spring force, so as to release the locking of the rotating member 220 on the charging pile main frame 4.

[0045] It should be understood that the reset component 3 enables the automatic clamping and automatic unlocking of the charging pile main frame 4. When the charging pile main frame 4 needs to be installed, the charging pile main frame 4 presses against the reset component 3, and the reset component 3 transmits power to the translation component 210, which in turn drives the rotating component 220 to lock the charging pile main frame 4. During this process, the reset component 3 is compressed and stores elastic potential energy, providing a power source for the subsequent unlocking action. When the charging pile main frame 4 needs to be disassembled, when the charging pile main frame 4 is lifted away from the base plate 1, the pressure of the charging pile main frame 4 on the reset component 3 is released, the elastic potential energy of the reset component 3 is released, driving the translation component 210 to move upward, which in turn drives the rotating component 220 to rotate and release the lock on the charging pile main frame 4.

[0046] Understandably, the addition of the reset component 3 automates the unlocking process of the charging pile main frame 4. As the charging pile main frame 4 moves upward, it can be automatically unlocked without the need for manual intervention to detach the rotating part 220 from the charging pile main frame 4. This significantly increases the efficiency of temporary installation and detachment of the charging pile main frame 4 and substantially improves production efficiency.

[0047] The structure of the reset component 3 should be able to store elastic potential energy and transmit power to the translational member 210. A preferred embodiment of this application is as follows: Figure 1-3 As shown, the reset assembly 3 includes a reset plate 310 and an elastic member 320; the upper end of the reset plate 310 is used to support the charging pile main frame 4, and the reset plate 310 is connected to the translation member 210 through the lower end; the first end of the elastic member 320 is connected to the reset plate 310, and the second end of the elastic member 320 is connected to the base plate 1.

[0048] It should be understood that the upper part of the reset plate 310 directly contacts the main frame 4 of the charging pile, converting part of the gravitational potential energy of the main frame 4 into the elastic potential energy of the elastic member 320. Its lower part is fixedly connected to the translational member 210, ensuring the synchronicity of the downward movement of the main frame 4 and the downward movement of the translational member 210. This makes the installation process of the main frame 4 and the locking of the rotating member 220 onto the main frame 4 synchronized. When the installation is completed, the rotating member 220 is also fully locked onto the main frame 4. When the main frame 4 is disassembled, one end of the elastic member 320 is supported by the base plate 1, and the other end lifts the reset plate 310, realizing the vertical upward movement of the translational member 210 and the rotational unlocking of the rotating member 220. With the addition of the reset component 3, the placement and disassembly of the main frame 4 of the charging pile are automatically converted into the locking and unlocking action of the rotating member 220 through the mechanical structure.

[0049] Specifically, such as Figure 1-3 As shown, the reset plate 310 is disposed above the base plate 1, and the translation member 210 is disposed below the base plate 1. The lower end of the reset plate 310 and the translation member 210 are fixedly connected by a connecting rod 330. The connecting rod 330 passes through the base plate 1, and the elastic member 320 is a spring and is sleeved on the connecting rod 330.

[0050] It should be noted that placing the reset plate 310 above the base plate 1 and the translational member 210 below the base plate 1 makes better use of the space in the device. If the reset plate 310 were placed below the base plate 1, the charging pile main frame 4 would need to pass through the base plate 1 to compress the reset plate 310. However, by placing the reset plate 310 above the base plate 1, the reset plate 310 only needs to pass through a small through hole and be driven by the connecting rod 330 through the hole to drive the translational member 210. The connecting rod 330 can completely transfer the vertical displacement of the reset plate 310 to the translational member 210, ensuring the synchronization of the upper and lower parts. The elastic member 320 can be directly placed between the reset plate 310 and the base plate 1. When using a stable spring, the elastic force may not be vertical enough due to a certain offset, which may cause damage after long-term use. Therefore, the spring is sleeved on the connecting rod 330, and the connecting rod 330 provides a certain guiding and constraining effect on the spring, which greatly improves the stability of the movement and the service life of the spring.

[0051] Understandably, the precise fit between the connecting rod 330 and the through hole on the base plate 1 provides additional guidance for the entire structure, so that during the placement of the charging pile main frame 4, the translation member 210 will only move precisely in the vertical direction, thus avoiding the translation member 210 from moving in the horizontal direction due to vibration deviation, which would prevent all the rotating members 220 from locking the charging pile main frame 4 at the same time.

[0052] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. An automatic clamping fixture for charging piles, characterized in that: The device includes a base plate, a locking assembly, and a reset assembly. The base plate is fixedly installed, and the reset assembly is installed between the locking assembly and the base plate. The upper part of the base plate is suitable for placing the main frame of the charging pile, and the locking assembly is installed on the base plate. The locking assembly is initially in an open state. When the main frame of the charging pile is placed on the base plate, the reset assembly, under the gravity of the main frame, drives the locking assembly to close and lock the main frame. When the main frame of the charging pile is removed from the base plate, the locking assembly is adapted to open and release the locking of the main frame of the charging pile under the reset action of the reset assembly.

2. The automatic clamping fixture for charging piles as described in claim 1, characterized in that: The locking assembly includes a translational member and multiple rotating members. The rotating members are rotatably mounted on the base plate via their central portion. The upper end of the rotating members is used to lock the main frame of the charging pile. The lower ends of the multiple rotating members cooperate with the translational member through a traction structure. When the main frame of the charging pile is placed on the base plate, the translational member is adapted to move vertically under the compression of the main frame of the charging pile, and then the traction structure drives each of the rotating members to rotate around the installation position toward the main frame of the charging pile until it is locked.

3. The automatic clamping fixture for charging piles as described in claim 2, characterized in that: The rotating component includes a first segment and a second segment, which are arranged at an angle. The first segment is used to lock the main frame of the charging pile. The traction structure includes a sliding rod and a sliding groove. The sliding groove is disposed in the second segment, and the sliding rod is disposed in the translational component. Alternatively, the sliding groove is disposed in the translational component, and the sliding rod is disposed in the rotating component. When the translational component moves vertically, the rotating component is driven to rotate around the installation position by the relative sliding of the sliding rod along the sliding groove.

4. The automatic clamping fixture for charging piles as described in claim 3, characterized in that: The angle between the first segment and the second segment ranges from 90° to 145°.

5. The automatic clamping fixture for charging piles as described in claim 3, characterized in that: The number of rotating components is at least one pair, and the rotating components are symmetrically arranged in pairs on both sides of the base plate.

6. The automatic clamping fixture for charging piles as described in claim 3, characterized in that: At least one locking head is provided at the end of the first segment away from the second segment; the locking head is adapted to lock into a locking groove on the main frame of the charging pile.

7. The automatic clamping fixture for charging piles as described in any one of claims 2-6, characterized in that: The reset assembly is installed between the translational member and the base plate. When the main frame of the charging pile is placed and installed, the main frame of the charging pile is adapted to press the reset assembly to drive the translational member to move vertically downward. When the main frame of the charging pile is removed from the base plate, the main frame of the charging pile releases the pressure on the reset assembly, and then the reset assembly drives the translational member to move vertically upward under the action of the reset spring force, so as to release the locking of the rotating member on the main frame of the charging pile.

8. The automatic clamping fixture for charging piles as described in claim 7, characterized in that: The reset assembly includes a reset plate and an elastic element; the upper end of the reset plate is used to support the main frame of the charging pile, and the reset plate is connected to the translational element through its lower end; the first end of the elastic element is connected to the reset plate, and the second end of the elastic element is connected to the base plate.

9. The automatic clamping fixture for charging piles as described in claim 8, characterized in that: The reset plate is disposed above the base plate, and the translational member is disposed below the base plate. The lower end of the reset plate and the translational member are fixedly connected by a connecting rod. The connecting rod passes through the base plate, and the elastic member is a spring and is sleeved on the connecting rod.

10. The automatic clamping fixture for charging piles as described in claim 1, characterized in that: The upper part of the base plate is provided with multiple positioning rods, which are adapted to cooperate with the positioning holes on the main frame of the charging pile for installation and positioning.

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