Butt joint device for isolating switch box

Abstract

The invention discloses a docking device for an isolating switch box, which is used for aligning and inserting a splined hole of a mechanism box and an isolating switch spline shaft, and comprises a fixed seat which is configured to rotate around the central axis of the splined hole in response to an external acting force; the movable plate is arranged on the fixed seat, and the movable plate has a locking state capable of keeping stable relative to the fixed seat and an unlocking state capable of moving in the first direction relative to the fixed seat; the clamping assembly is arranged on the movable plate and can clamp, fix, release and separate the mechanism box relative to the movable plate; the locking assembly is arranged between the movable plate and the fixed seat and is used for switching the movable plate between a locking state and an unlocking state; the first direction is the direction from the mechanism box to the isolation switch spline shaft. According to the invention, automatic plug-in assembly of the mechanism box and the disconnecting switch spline shaft can be realized.

Description

Technical Field

[0001] The present application relates to the technical field of isolating switch box assembly equipment, and in particular to a docking device for an isolating switch box. Background Art

[0002] The disconnector box is an electrical device used in power systems, primarily for isolating power, switching operations, and ensuring safety during maintenance. The mechanism box and disconnector spline shaft within the disconnector box are crucial components of the disconnector box. The mechanism box serves as the disconnector's operating and control center, primarily housing various operating mechanisms, control elements, and transmissions to enable opening and closing operations, as well as protection and monitoring. The disconnector spline shaft is a key transmission component connecting the operating mechanism and the disconnector's moving contacts. It is primarily used to transmit torque and motion, accurately transferring the operating mechanism's power to the moving contacts within the mechanism box, enabling the moving contacts to open and close as required.

[0003] During the assembly of the disconnector box, the mechanism box and the disconnector spline shaft must be assembled. Specifically, the spline hole on the mechanism box must be aligned and plugged into the disconnector spline shaft. However, current related technologies only address the issue of aligning the spline hole on the mechanism box with the central axis of the disconnector spline shaft, but fail to address the issue of aligning the spline hole on the mechanism box with the central axis keyway of the disconnector spline shaft. This makes it impossible to achieve automated assembly of the mechanism box and the disconnector spline shaft. Summary of the Invention

[0004] The present application aims to solve one of the technical problems in the related art to a certain extent. To this end, the present application provides a docking device for an isolating switch box.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solution: a docking device for an isolating switch box, used to align the spline hole of the mechanism box with the spline shaft of the isolating switch for insertion, the docking device comprising:

[0006] a fixed seat configured to be rotatable about a central axis of the spline hole in response to an external force;

[0007] a movable plate disposed on the fixed seat, wherein the movable plate has a locked state capable of maintaining a stable state relative to the fixed seat and an unlocked state capable of moving relative to the fixed seat in a first direction;

[0008] a clamping assembly, which is disposed on the movable plate and is capable of clamping and fixing the mechanism box relative to the movable plate and releasing and separating the mechanism box; and

[0009] a locking assembly, which is disposed between the movable plate and the fixed seat and is used to switch the movable plate between the locked state and the unlocked state;

[0010] The first direction is the direction from the mechanism box to the spline shaft of the isolating switch.

[0011] The application of this application has the following beneficial effects: the movable plate can be switched to a locked state by the locking assembly. In the locked state, the fixed seat can drive the mechanism box to move through the movable plate and the clamping assembly until the spline hole on the mechanism box is aligned with the central axis of the spline shaft of the isolating switch. Then, the locking assembly can be used to switch the movable plate to an unlocked state. By driving the fixed seat to rotate about the central axis of the spline hole, the movable plate and the mechanism box clamped to the movable plate by the clamping assembly can be driven to rotate synchronously. Because the movable plate can move in a first direction relative to the fixed seat, when the mechanism box rotates until the keyway of the spline shaft is aligned with the keyway of the spline shaft of the isolating switch, the mechanism box and the movable plate as a whole can automatically fall under the action of their own gravity, realizing the automated plug-in assembly of the mechanism box and the spline shaft of the isolating switch.

[0012] Optionally, the locking assembly includes a first driving mechanism and a support block driven by the first driving mechanism to switch between a first position and a second position, wherein when the support block is in the first position, it is respectively pressed against the fixed seat and the movable plate so that the movable plate is in a locked state; when the support block is in the second position, it is separated from one of the fixed seat and the movable plate so that the movable plate is in an unlocked state.

[0013] Optionally, the first driving mechanism is a linear driver arranged on the movable plate, the support block is connected to the output end of the first driving mechanism and is slidably arranged on the movable plate; a docking protrusion is formed below the fixed seat, and a guide slope is provided between the support block and the docking protrusion to guide the support block to extend under the docking protrusion. When the support block is in the first position, it extends under the docking protrusion and the two are pressed tightly. When the support block is in the second position, it is separated from the docking protrusion.

[0014] Optionally, the locking assembly also includes a guide structure arranged between the movable plate and the fixed seat, the guide structure including a guide shaft extending along the first direction and a limit member arranged at the lower end of the guide shaft, the top end of the guide shaft is fixedly connected to the fixed seat, the guide shaft passes through the movable plate and the two are slidably fitted together, and the limit member is located below the movable plate and is used to limit the movable plate from disengaging from the guide shaft.

[0015] Optionally, the guide structures are provided in multiple groups, and the multiple groups of guide structures cooperate to limit the circumferential shaking of the movable plate relative to the fixed seat along the guide axis.

[0016] Optionally, the docking device further includes a robotic arm, which is fixedly connected to the fixing seat and can drive the fixing seat to rotate around the central axis of the spline hole at a set speed, and the set speed is a selected value between 0.5r / min and 3r / min.

[0017] Optionally, the docking device further includes a detection element, which is electrically connected to the robotic arm and the clamping assembly, and is disposed on one of the fixed seat and the movable plate, and is used to detect relative position change information between the fixed seat and the movable plate.

[0018] Optionally, the docking device further includes an elastic member arranged between the fixed seat and the movable plate, the elastic member applying pressure on the movable plate and the fixed seat so that the movable plate and the fixed seat tend to approach each other, and the force applied by the elastic member on the movable plate is less than the weight of the mechanism box.

[0019] Optionally, the clamping assembly includes a second driving mechanism provided on the movable plate and a clamp connected to the second driving mechanism, and the clamp can be docked with and separated from the mechanism box under the drive of the second driving mechanism.

[0020] Optionally, the docking device further comprises a positioning shaft fixedly arranged on the movable plate, and a positioning protrusion for movable insertion with the mechanism box is provided at the lower end of the positioning shaft.

[0021] These features and advantages of this application will be disclosed in detail in the following detailed description and accompanying drawings. The best embodiments or means of this application will be fully illustrated in conjunction with the accompanying drawings, but this does not limit the technical solutions of this application. Furthermore, although there may be multiple features, elements, and components in each of the following text and accompanying drawings, different symbols or numbers may be used for convenience, but all represent components with the same or similar structure or function. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present application will be further described below with reference to the accompanying drawings:

[0023] Figure 1 A schematic structural diagram of a docking device for an isolating switch box provided in an embodiment of the present application;

[0024] Figure 2 is a side view of the docking device;

[0025] Figure 3 Side view of the docking device Figure 1 ;

[0026] Figure 4 Side view of the docking device Figure 2 ;

[0027] Figure 5 Side view of the docking device Figure 3 ;

[0028] Figure 6 The exploded view of the locking assembly and the fixing seat;

[0029] Figure 7 This is an exploded view of the locking assembly and the fixing seat from another perspective;

[0030] Figure 8 This is an exploded view of the fixed seat, movable plate and guide structure;

[0031] Figure 9 It is a longitudinal cross-sectional view of the fixed seat, movable plate and guide structure;

[0032] Figure 10 A side view of a support block and a fixing seat in a locking assembly in another embodiment.

[0033] Among them, 1. fixed seat; 10. docking protrusion; 100. first guide slope; 2. movable plate; 20. first slide rail; 21. second slide rail; 3. clamping assembly; 30. second drive mechanism; 31. clamp; 4. locking assembly; 40. first drive mechanism; 41. support block; 410. second guide slope; 42. guide shaft; 43. limit member; 44. bushing; 5. elastic member; 6. positioning shaft; 60. positioning protrusion; 7. robot arm coupler; 8. mechanism box. DETAILED DESCRIPTION

[0034] The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described in the embodiments are intended to be used to explain the present application and are not to be construed as limiting the present application.

[0035] In the description of this application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They 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, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to this application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0037] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0038] This embodiment provides a docking device for an isolating switch box, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the docking device is used to align and insert the spline hole of the mechanism box 8 with the spline shaft of the isolating switch, and the docking device includes a fixed seat 1, a movable plate 2, a clamping assembly 3 and a locking assembly 4. Among them, the fixed seat 1 is configured to be able to rotate around the central axis of the spline hole in response to an external force, and the movable plate 2 is arranged on the fixed seat 1. The movable plate 2 has a locked state that can maintain a stable state relative to the fixed seat 1 and an unlocked state that can move relative to the fixed seat 1 along a first direction. The locking assembly 4 is arranged between the movable plate 2 and the fixed seat 1 and is used to switch the movable plate 2 between the locked state and the unlocked state. The clamping assembly 3 is arranged on the movable plate 2 and can clamp and fix the mechanism box 8 relative to the movable plate 2 and release and separate it. The first direction is the direction in which the mechanism box 8 points to the spline shaft of the isolating switch, that is, Figure 2 The arrow P in the middle indicates the direction from top to bottom.

[0039] The movable plate 2 can be switched to a locked state by the locking assembly 4. In the locked state, the fixed seat 1 can drive the mechanism box 8 through the movable plate 2 and the clamping assembly 3 to move until the spline hole on the mechanism box 8 is aligned with the central axis of the spline shaft of the isolating switch. Then, the movable plate 2 can be switched to an unlocked state by the locking assembly 4. By driving the fixed seat 1 to rotate about the central axis of the spline hole, the movable plate 2 and the mechanism box 8 clamped to the movable plate 2 by the clamping assembly 3 can be driven to rotate synchronously. Since the movable plate 2 can move in a first direction relative to the fixed seat 1, when the mechanism box 8 rotates until the keyway of the spline shaft is aligned with the keyway of the spline shaft of the isolating switch, the mechanism box 8 and the movable plate 2 as a whole can automatically fall under the action of their own weight, realizing the automated plug-in assembly of the mechanism box 8 and the spline shaft of the isolating switch.

[0040] Combine Figure 1 、 Figure 6 and Figure 7 As shown, the locking assembly 4 in this embodiment includes a first driving mechanism 40 and a support block 41. The support block 41 is connected to the output end of the first driving mechanism 40 and can be switched between a first position and a second position under the drive of the first driving mechanism 40. When the support block 41 is in the first position, it is respectively pressed against the fixed seat 1 and the movable plate 2, so that the movable plate 2 is in a locked state. When the support block 41 is in the second position, it is separated from one of the fixed seat 1 and the movable plate 2, so that the movable plate 2 is in an unlocked state. Specifically in this embodiment, the locking assembly 4 is arranged on the movable plate 2, and the support block 41 is spaced apart from the fixed seat 1 when it is in the second position, that is, the support block 41 is separated from the fixed seat 1 when it is in the second position.

[0041] Combine Figure 8 and Figure 9 As shown, the locking assembly 4 in this embodiment also includes a guide structure disposed between the movable plate 2 and the fixed base 1. Specifically, the guide structure includes a guide shaft 42 extending in a first direction and a stopper 43 disposed at the lower end of the guide shaft 42. The top end of the guide shaft 42 is fixedly connected to the fixed base 1, and the guide shaft 42 passes through the movable plate 2, with the two slidingly engaging. The stopper 43 is located below the movable plate 2 and is used to prevent the movable plate 2 from disengaging from the guide shaft 42. Thus, when the first drive mechanism 40 drives the support block 41 to move to the first position, the support block 41 applies upward pressure to the fixed base 1 and downward pressure to the movable plate 2. Because the top end of the guide shaft 42 is fixedly connected to the fixed base 1, and the lower end of the guide shaft 42 passes through the movable plate 2 and is provided with the stopper 43, the movable plate 2 can reach the maximum distance relative to the fixed base 1, maintaining the relative fixation between the two. When the first drive mechanism 40 drives the support block 41 to move to the second position, the support block 41 separates from the fixed base 1, allowing the movable plate 2 to slide relative to the fixed base 1 along the guide shaft 42.

[0042] The assembly process of the movable plate 2, fixed seat 1, and guide structure in this embodiment is described as follows: The top end of the guide shaft 42 is screwed and fixed to the fixed seat 1. The movable plate 2 is provided with a through-hole, through which the lower end of the guide shaft 42 passes. A stopper 43 is then fixed to the lower end of the guide shaft 42 with screws. The stopper 43 in this embodiment is a circular plate with a larger diameter than the guide shaft 42. In addition, before installing the stopper 43, a bushing 44 can be installed between the guide shaft 42 and the through-hole. The bushing 44 is locked and fixed to the movable plate 2 via the bottom edge. The provision of the bushing 44 can make the sliding of the guide shaft 42 relative to the through-hole smoother.

[0043] Combine Figure 3 、 Figure 4 and Figure 5 As shown, the process of automatically assembling the mechanism box 8 and the isolating switch spline shaft using the docking device is described as follows:

[0044] Figure 3 The figure shows the state when the docking device provided by this embodiment is used to clamp the mechanism box 8 to the movable plate 2. At this time, the locking assembly 4 makes the movable plate 2 in a locked state, that is, the support block 41 is in the first position, which facilitates the fixing base 1 to drive the mechanism box 8 through the movable plate 2 and the clamping assembly 3 to move the mechanism box 8 until the spline hole on the mechanism box 8 is aligned with the central axis of the spline shaft of the disconnector. After the spline hole on the mechanism box 8 is aligned with the central axis of the spline shaft of the disconnector, the fixing base 1 is controlled to move downward to obtain the following result: Figure 4 The state shown. At this time, since the keyway of the spline hole on the mechanism box 8 is not aligned with the keyway of the spline shaft of the isolating switch, the spline shaft of the isolating switch can support the mechanism box 8, so the guide shaft 42 can follow the fixed seat 1 to move downward during the downward movement of the fixed seat 1. That is, at this time, the support block 41 is in the second position, and the movable plate 2 is in the unlocked state. Afterwards, the fixed seat 1 is driven to rotate around the central axis of the spline shaft, which can drive the movable plate 2 and the isolation box locked and fixed to the movable plate 2 by the clamping assembly 3 to rotate synchronously. It is easy to understand that after the isolation box rotates a certain angle, the keyway of the spline hole on the lower surface of the isolation box can be aligned with the keyway of the spline shaft of the isolating switch, and under the action of the self-gravity of the mechanism box 8 and the movable plate 2, the mechanism box 8 and the movable plate 2 can automatically fall, realizing the automatic assembly of the mechanism box 8 and the spline shaft of the isolating switch. Afterwards, the clamping assembly 3 is controlled to release the locking fixation of the mechanism box 8, so that the docking device is separated from the mechanism box 8, and the result is as shown. Figure 5 Status shown.

[0045] In this embodiment, the first driving mechanism 40 is a linear actuator provided on the movable plate 2. The support block 41 is connected to the output end of the first driving mechanism 40 and is slidably provided on the movable plate 2. A docking protrusion 10 is formed below the fixed seat 1. A guide slope is provided between the support block 41 and the docking protrusion 10 to guide the support block 41 to extend below the docking protrusion 10. When the support block 41 is in the first position, it extends below the docking protrusion 10 and the two are tightly pressed against each other. When the support block 41 is in the second position, it is separated from the docking protrusion 10. Figure 2 As shown, in order to ensure the sliding stability of the support block 41, in this embodiment, a first slide rail 20 is further provided on the movable plate 2, and the support block 41 is slidably provided on the first slide rail 20. In addition, a first planar guide slope 100 is provided on the docking protrusion 10, and a second planar guide slope 410 is provided on the support block 41. The first guide slope 100 and the second guide slope 410 cooperate with each other.

[0046] It should be noted that the first drive mechanism 40 in this embodiment is a linear drive, which drives the support block 41 to slide in the horizontal direction so that the support block 41 switches between the first position and the second position. In other optional embodiments, a drive motor can also be used as the first drive mechanism 40, and the first drive mechanism 40 drives the support block 41 to switch between the first position and the second position through a rotational action. Specifically, Figure 10 As shown, in this embodiment, the support block 41 is plate-shaped, and the lower surface of the docking protrusion 10 is provided with a first guide slope 100 in the form of an arc surface, and one end of the support block 41 is provided with a second guide slope 410 in the form of an arc surface, and the first guide slope 100 and the second guide slope 410 cooperate with each other. The first driving mechanism 40 drives the support block 41 to rotate. When the support block 41 rotates to a vertical state (that is, the support block 41 is in the first position), it can be tightly pressed against the docking protrusion 10; when the support block 41 rotates to a horizontal position ( Figure 10 The state shown by the dotted line, that is, the support block 41 is located at the second position) can be separated from the fixing base 1. The effect that can be achieved by the drive assembly in this application can also be achieved.

[0047] In addition, the present embodiment has four sets of guide structures, which cooperate to limit the circumferential shaking of the movable plate 2 relative to the fixed base 1 along the guide shaft 42. It is easy to understand that in other optional embodiments, the guide structures can also be provided in two or more sets.

[0048] As previously described, the clamping assembly 3 and locking assembly 4 in this embodiment are both disposed on the movable plate 2. When the keyway of the spline hole in the isolation box aligns with the keyway of the isolating switch spline shaft, the mechanism box 8, movable plate 2, clamping assembly 3, and locking assembly 4 as a whole move downward relative to the fixed base 1. Due to the heavy weight of the mechanism box 8, movable plate 2, clamping assembly 3, and locking assembly 4, they may experience a relatively violent rigid collision with the isolating switch spline shaft, potentially causing damage to the mechanism box 8 or the isolating switch spline shaft. To this end, the docking device provided in this embodiment also includes an elastic member 5 disposed between the fixed base 1 and the movable plate 2. The elastic member 5 applies pressure to the movable plate 2 and the fixed base 1, causing the movable plate 2 and the fixed base 1 to move closer to each other. Specifically, the elastic member 5 in this embodiment is a tension spring, one end of which is fixed to the fixed base 1 and the other end of which is fixed to the movable plate 2. It is easy to understand that the force applied by the elastic member 5 on the movable plate 2 is less than the weight of the mechanism box 8.

[0049] By providing the elastic member 5, an upward pulling force can be applied to the mechanism box 8 during the falling process, thereby reducing the rigid collision force between the mechanism box 8 and the isolating switch spline shaft, avoiding damage to the mechanism box 8 and the isolating switch spline shaft.

[0050] As mentioned above, when the docking device is used to assemble the mechanism box 8 and the spline shaft of the disconnector, it is necessary to control the fixed seat 1 to rotate. For this purpose, the docking device provided in this embodiment also includes a mechanical arm (not shown in the figure), which is fixedly connected to the fixed seat 1 and can drive the fixed seat 1 to rotate around the central axis of the spline hole at a set speed. Specifically in this embodiment, the set speed is 2r / min, that is, the fixed seat 1 is controlled to rotate at a speed of two revolutions per minute. Of course, according to different keyway specifications, the set speed can be a selected value between 0.5r / min and 3r / min. As Figure 1 As shown, a robotic arm coupler 7 for docking with a robotic arm is provided on the upper portion of the fixed base 1. In addition, the robotic arm in this embodiment is a six-axis robotic arm, which can not only drive the fixed base 1 to rotate around the central axis of the spline shaft, but also drive the fixed base 1 to move horizontally and vertically. In this way, when the movable plate 2 is in a locked state, the fixed base 1, the movable plate 2, and the mechanism box 8 can be driven by the robotic arm to move horizontally, so as to drive the mechanism box 8 to move until the spline hole on the mechanism box 8 is aligned with the spline shaft of the disconnector. It is also possible to drive the fixed base 1 and the guide shaft 42 downward relative to the movable plate 2 when the movable plate 2 is in an unlocked state, so that the movable plate 2 can float relative to the fixed base 1.

[0051] Furthermore, the docking device provided in this embodiment also includes a detection element (not shown in the figure), which is electrically connected to the mechanical arm and the clamping assembly 3, and is used to detect the relative position change information between the fixed seat 1 and the movable plate 2. Specifically, the detection element in this embodiment is a position sensor. When the mechanism box 8 rotates so that the keyway of the spline hole on the mechanism box 8 is automatically aligned with the keyway of the spline shaft of the isolating switch, the mechanism box 8 moves downward under the action of gravity, so that the spline shaft is inserted into the spline hole. The position change of the movable plate 2 following the downward movement of the mechanism box 8 can be detected by the detection element, so that it can be determined that the mechanism box 8 has completed the docking and insertion with the spline shaft of the isolating switch. The operation of the mechanical arm and the clamping assembly 3 can be controlled based on the information detected by the detection element. It is easy to understand that the detection element can be set on the fixed seat 1 or on the movable plate 2.

[0052] In addition, if Figure 1 and Figure 2 As shown, the clamping assembly 3 in this embodiment includes a second drive mechanism 30 provided on the movable plate 2 and a clamp 31 connected to the second drive mechanism 30. The clamp 31 can be connected to and separated from the mechanism box 8 under the drive of the second drive mechanism 30. Specifically, the clamp 31 can be a pneumatic clamp. The clamp 31 can move in the horizontal direction under the drive of the second drive mechanism 30, so that the clamp 31 can be connected to and separated from the edge of the mechanism box 8. After the clamp 31 is connected to the edge of the mechanism box 8, the clamp 31 can automatically clamp the edge of the mechanism box 8, locking the mechanism box 8 to the movable plate 2. In order to improve the stability of the clamp 31 in the horizontal direction, a second slide rail 21 is further provided on the lower surface of the movable plate 2 in this embodiment, and the clamp 31 is slidably provided on the second slide rail 21.

[0053] Furthermore, the docking device also includes a positioning shaft 6 fixedly mounted on the movable plate 2. The lower end of the positioning shaft 6 is provided with a positioning protrusion 60 for movable insertion with the mechanism box 8. The provision of the positioning shaft 6 and the positioning protrusion 60 facilitates the docking of the docking device with the mechanism box 8. Specifically, in the initial assembly stage, the robot arm first drives the fixing base 1 to move so that the positioning protrusion 60 is inserted into the corresponding positioning hole on the mechanism box 8. The mechanism box 8 is then locked and fixed to the movable plate 2 by the clamping assembly 3.

[0054] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. Those skilled in the art should understand that the present application includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the present application are included within the scope of the claims.

Claims

1. A docking device for an isolating switch box, used to align the spline hole of a mechanism box (8) with the spline shaft of the isolating switch for insertion, characterized in that: The docking device comprises: A fixed seat (1) configured to be rotatable about the central axis of the spline hole in response to an external force; A movable plate (2) is arranged on the fixed seat (1), and the movable plate (2) has a locked state capable of maintaining a stable state relative to the fixed seat (1) and an unlocked state capable of moving relative to the fixed seat (1) along a first direction; a clamping assembly (3), which is arranged on the movable plate (2) and is capable of clamping and fixing the mechanism box (8) relative to the movable plate (2) and releasing and separating the mechanism box (8); and A locking assembly (4), which is arranged between the movable plate (2) and the fixed seat (1) and is used to switch the movable plate (2) between the locked state and the unlocked state; Wherein, the first direction is the direction in which the mechanism box (8) points to the spline shaft of the isolating switch.

2. The docking device according to claim 1, characterized in that: The locking assembly (4) comprises a first driving mechanism (40) and a support block (41) driven by the first driving mechanism (40) to switch between a first position and a second position; when the support block (41) is located at the first position, it is respectively pressed against the fixed seat (1) and the movable plate (2) so that the movable plate (2) is in a locked state; When the support block (41) is located at the second position, it is separated from one of the fixed seat (1) and the movable plate (2), so that the movable plate (2) is in an unlocked state.

3. The docking device according to claim 2, characterized in that: The first driving mechanism (40) is a linear driver arranged on the movable plate (2); the supporting block (41) is connected to the output end of the first driving mechanism (40) and is slidably arranged on the movable plate (2); A docking protrusion (10) is formed below the fixing seat (1), and a guiding inclined surface is provided between the supporting block (41) and the docking protrusion (10) to guide the supporting block (41) to extend below the docking protrusion (10); when the supporting block (41) is in a first position, it extends below the docking protrusion (10) and the two are tightly pressed against each other; when the supporting block (41) is in a second position, it is separated from the docking protrusion (10).

4. The docking device according to claim 2, characterized in that: The locking assembly (4) also includes a guide structure arranged between the movable plate (2) and the fixed seat (1), the guide structure including a guide shaft (42) extending along the first direction and a limiter (43) arranged at the lower end of the guide shaft (42), the top end of the guide shaft (42) is fixedly connected to the fixed seat (1), the guide shaft (42) passes through the movable plate (2) and the two are slidably matched, and the limiter (43) is located below the movable plate (2) and is used to limit the movable plate (2) from disengaging from the guide shaft (42).

5. The docking device according to claim 4, characterized in that: The guide structures are provided in multiple groups, and the multiple groups of guide structures cooperate with each other to limit the circumferential shaking of the movable plate (2) relative to the fixed seat (1) along the guide shaft (42).

6. The docking device according to claim 1, characterized in that: The docking device also includes a mechanical arm, which is fixedly connected to the fixing seat (1) and can drive the fixing seat (1) to rotate around the central axis of the spline hole at a set speed, wherein the set speed is a selected value between 0.5 r / min and 3 r / min.

7. The docking device according to claim 6, characterized in that: The docking device further comprises a detection element, the detection element being electrically connected to both the mechanical arm and the clamping assembly (3), the detection element being arranged on one of the fixed seat (1) and the movable plate (2), and the detection element being used to detect relative position change information between the fixed seat (1) and the movable plate (2).

8. The docking device according to any one of claims 1 to 7, characterized in that: The docking device further comprises an elastic member (5) arranged between the fixed seat (1) and the movable plate (2), wherein the elastic member (5) applies pressure to the movable plate (2) and the fixed seat (1) so that the movable plate (2) and the fixed seat (1) tend to approach each other, and the force applied by the elastic member (5) to the movable plate (2) is less than the weight of the mechanism box (8).

9. The docking device according to any one of claims 1 to 7, characterized in that: The clamping assembly (3) comprises a second driving mechanism (30) arranged on the movable plate (2) and a clamp (31) connected to the second driving mechanism (30); the clamp (31) can be connected to and separated from the mechanism box (8) under the drive of the second driving mechanism (30).

10. The docking device according to any one of claims 1 to 7, characterized in that: The docking device also includes a positioning shaft (6) fixedly arranged on the movable plate (2), and a positioning protrusion (60) for movable insertion with the mechanism box (8) is arranged at the lower end of the positioning shaft (6).

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