An electrophoretic flip-over self-locking device

Abstract

The application discloses an electrophoretic overturning self-locking device, which comprises a rotating shaft, a locking mechanism and a clamping groove. The clamping groove is connected to the rotating shaft, and the locking mechanism is movably connected to the overturning trolley and comprises a first posture and a second posture. The locking mechanism comprises a driving end and a locking end. When the locking mechanism is in the first posture, the locking end of the locking mechanism is matched with the clamping groove to lock the rotating shaft. When the locking mechanism is in the second posture, the locking end of the locking mechanism is separated from the clamping groove. Compared with the prior art, the electrophoretic overturning self-locking device has the advantages that the automatic self-locking function of the overturning trolley is realized, whether the gravity center of the body-in-white is in the center of the overturning trolley does not need to be considered, the overturning trolley has the capacity of co-line production of various vehicle models, mechanical automatic self-locking is realized, manual intervention is not needed in the whole process, and the production model limitation caused by the overturning trolley is changed.

Description

Technical Field

[0001] This application relates to the field of transportation equipment technology, and more specifically, to an electrophoretic flipping self-locking device. Background Technology

[0002] An automotive electrophoresis line is a specialized production line used in automobile manufacturing to apply electrophoretic coating to the car body. The body-in-white refers to the unpainted body of the vehicle's structural components and body panels. On a stepping-type tilting automotive electrophoresis line, the tilting trolley acts as the carrier for the body-in-white, moving it along with the coating process.

[0003] After the body-in-white is fixed onto the tilting trolley, its center of gravity is not at the center of the trolley's axis of rotation, causing it to tilt forward or backward and become unable to maintain a horizontal posture, thus preventing it from moving forward. Existing technology adjusts the relative position of the body-in-white on the tilting trolley to ensure its center of gravity is at the center of the trolley's axis, thereby ensuring the body-in-white remains horizontal during transport. However, different fixing and unlocking fixtures are used for each vehicle model, increasing the overall vehicle development cost and the operating cost of the painting workshop. Furthermore, since the dimensions of the electrophoresis tank are fixed, moving the body-in-white has significant limitations and is not conducive to the co-production of multiple vehicle models.

[0004] Therefore, how to prevent the vehicle body from tipping over during transportation has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this application is to disclose an electrophoretic flipping self-locking device to prevent the vehicle body from tipping over during transportation.

[0006] An electrophoresis flipping self-locking device includes a flipping trolley, the flipping trolley including a rotating shaft.

[0007] The electrophoretic flipping self-locking device includes a locking mechanism and a slot;

[0008] The slot is connected to the rotating shaft; the locking mechanism is movably connected to the tilting trolley and includes a first posture and a second posture, and the locking mechanism includes a driving end and a locking end;

[0009] When the locking mechanism is in the first position, the locking end of the locking mechanism and the slot cooperate to lock the rotating shaft; when the locking mechanism is in the second position, the locking end of the locking mechanism separates from the slot.

[0010] In one possible implementation, the locking mechanism includes a central shaft assembly and a rotating arm assembly, the central shaft assembly being rotatably mounted on the tilting trolley, and the rotating arm assembly including a first rotating arm and a second rotating arm at a preset angle.

[0011] The rotating arm assembly is connected to the central shaft assembly and can rotate around the axis of the central shaft assembly; the locking end is disposed on the first rotating arm, and the driving end is disposed on the second rotating arm.

[0012] In one possible implementation, the torque of the self-weight of the first rotating arm acting on the central shaft assembly is a first torque, and the torque of the self-weight of the second rotating arm acting on the central shaft assembly is a second torque, the second torque being greater than the first torque, so that the rotating arm assembly rotates to engage with the locking end of the first rotating arm and the slot.

[0013] or,

[0014] The locking mechanism includes a torsion elastic element, one arm of which acts on one of the first rotating arm and the second rotating arm, and the other arm acts on the tilting trolley to drive the rotating arm assembly to rotate to the locking end of the first rotating arm and engage with the slot.

[0015] In one possible implementation, the central shaft assembly includes a rotating shaft rotatably disposed on the tilting trolley, and the rotating arm assembly is fixed to the rotating shaft;

[0016] or,

[0017] The central shaft assembly includes a fixed shaft and a bushing. The fixed shaft is fixedly mounted on the tilting trolley, and the bushing is rotatably fitted onto the fixed shaft. The rotating arm assembly is fixed to the bushing.

[0018] In one possible implementation, the electrophoresis flipping self-locking device further includes an unlocking disc, which is disposed at the electrophoresis station;

[0019] The unlocking disc has a guide groove for sliding cooperation with the drive end, and the guide groove includes a release area and a first transition area that are connected to each other.

[0020] When the tilting trolley moves toward the electrophoresis station, the drive end slides through the first transition zone to the release zone. When the drive end is in the release zone, the locking end of the locking mechanism separates from the slot.

[0021] In one possible implementation, the first transition zone includes an inlet end and an outlet end, the outlet end of the first transition zone is connected to the release zone, and the slot width of the first transition zone gradually decreases from the inlet end to the outlet end.

[0022] In one possible implementation, the guide groove further includes a first locking region, which is connected to the inlet end of the first transition region, and the groove width at the first locking region is greater than the groove width at the release region.

[0023] In one possible implementation, the guide groove further includes a second locking region and a second transition region, the second transition region being symmetrically arranged at both ends of the release region with respect to the first transition region, and the release region being connected to the second locking region through the second transition region.

[0024] In one possible implementation, a pulley is also included, which is disposed at the drive end of the locking mechanism, and the diameter of the pulley is smaller than the width of the guide groove.

[0025] In one possible implementation, the rotating shaft is provided with a connector for connecting a drive device; the slots include two slots arranged opposite to each other on the connector.

[0026] During the operation of the electrophoresis flipping self-locking device disclosed in this application, when the flipping trolley is in the transport state, the locking mechanism is in the first position, the locking end of the locking mechanism and the slot are engaged, and the rotating shaft of the flipping trolley is locked and cannot rotate; when the flipping trolley moves to the electrophoresis station and needs to perform the flipping action, it can be manually operated by the operator or automatically controlled by the mechanical structure to make the locking mechanism in the second position, the locking end and the slot are separated, and the rotating shaft of the flipping trolley can rotate freely.

[0027] Compared with related technologies, the electrophoretic tilting self-locking device disclosed in this application realizes the automatic self-locking function of the tilting trolley, without needing to consider whether the center of gravity of the body-in-white is in the center of the tilting trolley, and has the ability to produce multiple models on the same line, realizing mechanical automation self-locking, without the need for manual intervention throughout the process, and changing the limitations of production models caused by the tilting trolley. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the electrophoretic flipping self-locking device disclosed in the embodiments of this application when it is unlocked;

[0030] Figure 2 This is a schematic diagram of the electrophoretic flipping self-locking device disclosed in the embodiments of this application when locked;

[0031] Figure 3 This is a schematic diagram of the structure of the tilting trolley and locking mechanism disclosed in the embodiments of this application;

[0032] Figure 4This is a schematic diagram of the electrophoretic flipping self-locking device disclosed in the embodiments of this application.

[0033] The attached figures are labeled as follows:

[0034] 100. Tilting trolley; 110. Rotating shaft; 120. Connecting component;

[0035] 200. Unlock disk; 210. First locked zone; 220. First transition zone; 230. Release zone; 240. Second transition zone; 250. Second locked zone;

[0036] 300. Locking mechanism; 310. First rotating arm; 320. Central shaft; 330. Second rotating arm;

[0037] 400. Card slot;

[0038] 500. Pulley. Detailed Implementation

[0039] The purpose of this application is to disclose an electrophoretic flipping self-locking device to prevent the vehicle body from tipping over during transportation.

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] See Figures 1 to 4 The electrophoresis flipping self-locking device disclosed in this application is used to prevent the flipping trolley 100 from tilting during transportation.

[0042] The tilting trolley 100 includes an upper longitudinal beam, a rotating shaft 110, and a trolley body. The upper longitudinal beam is fixed to the rotating shaft 110 and serves as a fixed beam for the car body. The bottom beam serves as a carrier for the longitudinal movement of the tilting trolley 100, and the trolley body can move along the bottom beam. On the automotive electrophoresis line, the car body is fixed to the fixed beam and moves with the tilting trolley 100. When the tilting trolley 100 moves to the electrophoresis tank, the rotating shaft 110 rotates, causing the upper longitudinal beam and the car body to tilt, thereby performing electrophoretic coating on the car body.

[0043] The electrophoresis flipping self-locking device includes a locking mechanism 300 and a slot 400. The slot 400 is connected to the rotating shaft 110. The locking mechanism 300 is movably connected to the flipping trolley 100, allowing it to move with the flipping trolley 100 and operate between a set first and second posture. The locking mechanism 300 includes a driving end and a locking end. The slot 400 has an open opening, and the locking end can be a protrusion corresponding to the shape of the opening. The two cooperate to prevent relative movement between the locking end and the slot 400, thus preventing the rotating shaft 110 connected to the slot 400 from rotating freely.

[0044] When the locking mechanism 300 is in the first position, the locking end of the locking mechanism 300 moves upward to the top and precisely inserts into the slot 400, thereby achieving anti-rotation locking of the rotating shaft 110. When the locking mechanism 300 is in the second position, the locking end of the locking mechanism 300 separates from the slot 400, and the rotating shaft 110 can rotate freely.

[0045] During the operation of the electrophoresis flipping self-locking device disclosed in this application, when the flipping trolley 100 is in the transport state, the locking mechanism 300 is in the first posture, the locking end of the locking mechanism 300 and the slot are engaged, and the rotating shaft of the flipping trolley is locked and cannot rotate; when the flipping trolley 100 moves to the electrophoresis station and needs to perform the flipping action, the locking mechanism 300 can be put into the second posture by manual operation by the operator or by automatic control of the mechanical structure, the locking end and the slot 400 are separated, and the rotating shaft 110 of the flipping trolley 100 can rotate freely.

[0046] Compared with related technologies, the electrophoretic flipping self-locking device disclosed in this application realizes the automatic self-locking function of the flipping trolley 100 without considering whether the center of gravity of the body-in-white is at the center of the flipping trolley 100. It has the ability to produce multiple models on the same line, realizes mechanical automation self-locking, and requires no manual intervention throughout the process, thus changing the limitations on the production models caused by the flipping trolley 100.

[0047] In one specific embodiment, the locking mechanism 300 may include a central shaft assembly 320 and a rotating arm assembly, such as Figure 3As shown. The central shaft assembly 320 is rotatably mounted on the tilting trolley 100, and the rotating arm assembly is connected to the central shaft assembly 320 and can rotate around the axis of the central shaft assembly 320. The rotating arm assembly includes a first rotating arm 310 and a second rotating arm 330 with a preset angle. This preset angle is preferably an obtuse angle, which helps to reduce bending moment and stress concentration. Under load, the force acting on the end of the first rotating arm 310 is transmitted to the connected central shaft assembly 320 and the second rotating arm 330. The obtuse angle design makes the force flow line smoother, and the force is transmitted more in the form of compression / tension along the axis of the arm, rather than generating a huge bending moment, thereby improving structural strength and fatigue life. The locking end of the locking mechanism 300 is located on the first rotating arm 310, and the driving end is located on the second rotating arm 330, so that when the driving end rotates around the central shaft assembly 320, the locking end will rotate in the opposite direction to the driving end.

[0048] To ensure the locking mechanism 300 is in its first position (locked state) under natural conditions, the torque exerted by the weight of the first rotating arm 310 on the central shaft assembly 320 is the first torque, and the torque exerted by the weight of the second rotating arm 330 on the central shaft assembly 320 is the second torque. Since the second torque is greater than the first torque, the locking end of the first rotating arm 310 automatically falls into the slot 400. The geometry of the slot 400 and the locking end forms a self-locking angle. At this point, the torque exerted by the tilting trolley 100 attempting to reverse cannot overcome gravity, thus achieving reliable locking. Specifically, this can be achieved by designing the length and width of the second rotating arm 330 to be greater, or by adding a counterweight to the second rotating arm 330, making its weight greater than that of the first rotating arm 310. This design achieves self-locking through gravity. When subjected to external forces, the locking mechanism relies on its own mass and robust structure to resist, making it less prone to irreversible damage. The self-locking force is constant and reliable, the structure is simple, and maintenance is convenient.

[0049] In another embodiment, the locking mechanism 300 includes a torsional elastic element, one arm of which acts on one of the first and second rotating arms 330, and the other arm acts on the tilting trolley 100. Through pre-compression (or pre-tension), the torsional elastic element provides a continuous, unidirectional elastic force to the locking mechanism 300. This elastic force drives the locking end of the locking mechanism 300 to quickly and automatically enter the slot 400, thereby preventing the rotating shaft 110 from rotating. This design provides locking force through the preload of the torsional elastic element, is unrestricted by installation orientation, and can be used in any installation position. Designers can precisely control the magnitude of the locking force by selecting springs of different stiffnesses.

[0050] In one specific embodiment of the central shaft assembly 320, the central shaft assembly 320 may include a rotating shaft. The rotating shaft is supported on the tilting trolley 100 by bearings, allowing the rotating shaft to rotate relative to the tilting trolley 100. The rotating arm assembly is fixed to the rotating shaft to ensure no relative movement. The central shaft assembly 320 of this design has a simple structure, high transmission efficiency, and low maintenance cost.

[0051] In another specific embodiment of the central shaft assembly 320, the central shaft assembly 320 may include a fixed shaft and a bushing. The fixed shaft is fixedly connected to the tilting trolley 100 and serves a supporting function. For example Figure 4 As shown, a mounting plate is fixed to the fixed shaft, and the mounting holes on the mounting plate are bolted to the tilting trolley 100. A bushing is rotatably fitted onto the fixed shaft and can engage with the fixed shaft via bearings, allowing the bushing to rotate around the fixed shaft. The first rotating arm 310 and the second rotating arm 330 are fixedly connected to the bushing, enabling the first rotating arm 310 and the second rotating arm 330 to rotate around the fixed shaft. This design requires minimal modification to the original structure of the tilting trolley 100; only corresponding mounting holes need to be added, reducing the installation difficulty of the electrophoresis tilting self-locking device.

[0052] To achieve automatic control of the locking mechanism 300, the electrophoresis flipping self-locking device also includes an unlocking disc 200. The unlocking disc 200 is fixedly installed at the electrophoresis station, and a precision guide groove is machined on its end face. This guide groove is used to slide and engage with the drive end of the locking mechanism 300, and includes a connected release area 230 and a first transition area 220.

[0053] The first transition zone 220 can be a straight or curved groove, the vertical distance of which relative to the bottom of the unlocking disc 200 continuously increases (or decreases). When the tilting trolley 100 moves, this groove wall rotates upward (or downward) through the drive end, causing the locking end of the locking mechanism 300 to rotate downward (or upward).

[0054] Release area 230 can be a horizontal straight groove. When the drive end is in this area, the movement of the tilting trolley 100 will not cause the locking mechanism 300 to rotate. The locking mechanism 300 is in the second posture, the locking end is in the lowest position, the locking end is disengaged from the slot 400, and the rotating shaft 110 is unlocked.

[0055] In its natural state, the locking mechanism 300 is in its first posture, with the locking end at its highest position, engaging with the slot 400, and the rotating shaft 110 locked. When the tilting trolley 100 moves towards the electrophoresis station, it drives the locking mechanism 300. The drive end first enters the first transition zone 220. As the tilting trolley 100 continues to move, the wall of the first transition zone 220 rotates upwards (or downwards) via the drive end, causing the locking end of the locking mechanism 300 to rotate downwards (or upwards). Until the drive end slides through the first transition zone 220 to the release zone 230, the locking mechanism 300 is in its second posture, the locking end completely exits the slot 400, and the rotating shaft 110 is unlocked. The tilting trolley 100 continues to move until the drive end disengages from the release zone 230, at which point the locking mechanism 300 quickly returns to its first posture, the locking end engages with the slot 400, and the rotating shaft 110 re-locks. The guide groove of this design has a simple shape, making it easy to manufacture. The locking mechanism 300 quickly locks after the release action, making it suitable for applications requiring rapid response. The unlocking disc and the drive end have multi-faceted contact, resulting in a large contact area, uniform stress distribution, good overall structural rigidity, and the ability to withstand high loads and impact vibrations, ensuring a long service life.

[0056] To ensure smooth and shock-free movement of the drive end within the guide groove, the first transition zone 220 includes an inlet end and an outlet end. The outlet end of the first transition zone 220 is connected to the release zone 230, and the groove width of the first transition zone 220 gradually decreases from the inlet end to the outlet end. This design ensures that the constraint force of the groove wall on the drive end is continuously varied, guaranteeing a smooth transition of speed and momentum, resulting in very smooth movement. Furthermore, the groove width at the inlet end is greater than that at the outlet end, which facilitates the drive end's entry into the guide groove and reduces assembly difficulty and alignment accuracy requirements.

[0057] In one specific embodiment, the guide groove may further include a first locking area 210, which is connected to the entrance end of the first transition area 220. When the tilting trolley 100 moves toward the electrophoresis station, the drive end of the locking mechanism 300 enters the first transition area 220 via the first locking area 210. When the drive end enters this area, the locking end is in its highest position, inserted into the slot 400, and the rotating shaft 110 is locked. To ensure that the drive end can smoothly enter the first locking area 210, the groove width at the first locking area 210 is set to be greater than the groove width at the release area 230. In the direction of movement of the tilting trolley 100, the groove width of the first locking area 210 can be constant or gradually decrease. It should be noted that when the tilting trolley 100 has not reached the electrophoresis station, the position of the drive end must be between the highest and lowest points at the entrance of the first locking area 210.

[0058] In one specific embodiment, the guide groove further includes a second locking area 250 and a second transition area 240. The second transition area 240 and the first transition area 220 are symmetrically arranged at both ends of the release area 230, and the release area 230 is connected to the second locking area 250 through the second transition area 240. The tilting trolley 100 drives the locking mechanism 300 to move. After the driving end leaves the release area 230, it enters the second transition area 240. The groove wall of the second transition area 240 drives the locking mechanism 300 to rotate. When the driving end passes through the first transition area 220 and the second transition area 240, the rotation direction of the locking mechanism 300 is opposite. When the driving end slides to the second locking area 250, the locking mechanism 300 returns to the first posture, the locking end engages with the slot 400, and the rotating shaft 110 is re-locked. This design facilitates full control of the movement of the locking mechanism 300. Both the unlocking and locking actions of the locking mechanism 300 are restricted by the guide groove. By precisely designing the shape of the guide groove, the movement law of the locking mechanism 300 can be optimized, achieving smooth acceleration and deceleration. This effectively reduces the impact, vibration, and noise when the locking end is inserted and withdrawn. At the same time, the second locking zone 250 and the second transition zone 240 ensure that the locking mechanism 300 accurately returns to the locking position, guaranteeing extremely high repeatability.

[0059] To reduce friction between the driving end of the locking mechanism 300 and the guide groove, the electrophoretic flipping self-locking device also includes a pulley 500, which is disposed at the driving end of the locking mechanism 300. The diameter of the pulley 500 is smaller than the width of the guide groove, allowing the outer ring of the pulley 500 to be embedded in the guide groove and roll freely. A needle roller bearing is preferably installed between the pulley 500 and the driving end of the locking mechanism 300 to further reduce wear between them.

[0060] To facilitate the loading and unloading of the slots 400, a connector 120 is provided on the rotating shaft 110. The connector 120 can be a U-shaped component, with the back of its U-shaped opening connected to the rotating shaft 110. The U-shaped opening is used to connect a drive device, which can be a motor fixed to the electrophoresis station. When the tilting trolley 100 moves to the electrophoresis station, the drive device is connected to the rotating shaft 110 through the connector 120, thereby driving the rotating shaft 110 to rotate. Two slots 400 are arranged opposite each other on the U-shaped sidewall of the connector 120.

[0061] Before the tilting trolley 100 enters the electrophoresis station, the locking mechanism 300 locks with the first slot 400. The tilting trolley 100 first reaches the first tilting station for electrophoresis, where the locking mechanism 300 unlocks, and the rotating shaft 110 rotates the car body 180°. The second slot 400 rotates from top to bottom, and the locking mechanism 300 locks with the second slot 400. The car body then undergoes electrophoresis until the tilting trolley 100 reaches the second tilting station. The rotating shaft 110 then rotates the car body another 180°, and the first slot 400 rotates back to the bottom, locking the locking mechanism 300 again. This design expands the lockable positions of the device, allowing the tilting trolley 100 to switch and lock between two precise, fixed positions.

[0062] The terms "first" and "second," etc., used in the specification and claims of this application are used to distinguish different objects, not to describe a specific order, and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units may include steps or units not listed, but rather steps or units not listed. Additionally, in the description of embodiments in this application, "a plurality of" means two or more.

[0063] In the description of this application, it should be understood that the terms "height," "thickness," "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used 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 therefore should not be construed as a limitation of this application. In the description of this application, "a plurality of" means two or more, and "at least one" can mean one, two, or more, unless otherwise expressly specified.

[0064] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Specific technical means in some embodiments may be incorporated, in whole or in part, into another embodiment unless explicitly excluded by another embodiment. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electrophoretic flipping self-locking device, characterized in that, It includes a tilting trolley (100), the tilting trolley (100) includes a rotating shaft (110), and the electrophoresis tilting self-locking device includes a locking mechanism (300) and a slot; The slot (400) is connected to the rotating shaft (110); the locking mechanism (300) is movably connected to the tilting trolley (100) and includes a first posture and a second posture. The locking mechanism (300) includes a driving end and a locking end. When the locking mechanism (300) is in the first posture, the locking end of the locking mechanism (300) and the slot (400) cooperate to lock the rotating shaft (110); when the locking mechanism (300) is in the second posture, the locking end of the locking mechanism (300) separates from the slot (400).

2. The electrophoresis flipping self-locking device as described in claim 1, characterized in that, The locking mechanism (300) includes a central shaft assembly (320) and a rotating arm assembly. The central shaft assembly (320) is rotatably mounted on the tilting trolley (100). The rotating arm assembly includes a first rotating arm (310) and a second rotating arm (330) at a preset angle. The rotating arm assembly is connected to the central shaft assembly (320) and can rotate around the axis of the central shaft assembly (320); the locking end is disposed on the first rotating arm (310) and the driving end is disposed on the second rotating arm (330).

3. The electrophoretic flipping self-locking device as described in claim 2, characterized in that, The torque of the weight of the first rotating arm (310) acting on the central shaft assembly (320) is the first torque, and the torque of the weight of the second rotating arm (330) acting on the central shaft assembly (320) is the second torque. The second torque is greater than the first torque, so that the rotating arm assembly rotates to engage with the locking end of the first rotating arm (310) and the slot (400). or, The locking mechanism (300) includes a torsion elastic element, one arm of which acts on one of the first rotating arm and the second rotating arm (330), and the other arm acts on the tilting trolley (100) to drive the rotating arm assembly to rotate to engage the locking end of the first rotating arm (310) with the slot (400).

4. The electrophoretic flipping self-locking device as described in claim 2, characterized in that, The central shaft assembly (320) includes a rotating shaft, which is rotatably mounted on the tilting trolley (100), and the rotating arm assembly is fixed to the rotating shaft; or, The central shaft assembly (320) includes a fixed shaft and a bushing. The fixed shaft is fixedly mounted on the tilting trolley (100), and the bushing is rotatably mounted on the fixed shaft. The rotating arm assembly is fixed to the bushing.

5. The electrophoretic flipping self-locking device as described in any one of claims 1-4, characterized in that, The electrophoresis flipping self-locking device also includes an unlocking disc (200), which is disposed at the electrophoresis station; The unlocking disk (200) has a guide groove for sliding cooperation with the drive end, and the guide groove includes a release area (230) and a first transition area (220) that are connected. When the tilting trolley (100) moves toward the electrophoresis station, the drive end slides through the first transition zone (220) to the release zone (230). When the drive end is in the release zone (230), the locking end of the locking mechanism (300) separates from the slot (400).

6. The electrophoretic flipping self-locking device as described in claim 5, characterized in that, The first transition zone (220) includes an inlet end and an outlet end. The outlet end of the first transition zone (220) is connected to the release zone (230). The width of the groove in the first transition zone (220) gradually decreases from the inlet end to the outlet end.

7. The electrophoretic flipping self-locking device as described in claim 6, characterized in that, The guide groove also includes a first locking area (210), which is connected to the inlet end of the first transition area (220), and the groove width at the first locking area (210) is greater than the groove width at the release area (230).

8. The electrophoretic flipping self-locking device as described in claim 5, characterized in that, The guide groove further includes a second locking area (250) and a second transition area (240). The second transition area (240) and the first transition area (220) are symmetrically arranged at both ends of the release area (230). The release area (230) is connected to the second locking area (250) through the second transition area (240).

9. The electrophoretic flipping self-locking device as described in claim 5, characterized in that, It also includes a pulley (500), which is disposed at the drive end of the locking mechanism (300), and the diameter of the pulley (500) is smaller than the width of the guide groove.

10. The electrophoretic flipping self-locking device as described in claim 1, characterized in that, The rotating shaft (110) is provided with a connector (120), which is used to connect the drive device; the slot (400) includes two slots, which are arranged opposite to each other on the connector (120).

Images