Short-stroke rapid transmission mechanism for dual-power change-over switch

Abstract

The invention relates to a short-stroke quick transmission mechanism for a dual-power change-over switch, which comprises a switch casing for a loop device of a standby power supply, a transmission bearing used for disconnecting a normal power supply and connecting the normal power supply to the standby power supply is arranged in the switch casing, and a T-shaped clasping arm is rotatably connected to the outer side of the transmission bearing. A vacuum switch tube is arranged in the switch machine shell, a compensation mechanism is arranged between the vacuum switch tube and the T-shaped clapping arm and comprises a positioning pin, a threaded groove is formed in the outer side of the positioning pin, a pressing piece is arranged at the top of the positioning pin in a sleeving mode, and the compensation mechanism further comprises a boss. Movable conducting rods are arranged at the front end of the boss and the front end of the vacuum switch tube, outer spherical shells are fixedly connected to the ends of the movable conducting rods, inner spherical shells are rotationally connected to the inner sides of the outer spherical shells, and an inner threaded tube is rotationally connected between the two inner spherical shells. The butt joint dislocation problem caused by insufficient machining precision and assembly errors is effectively solved, it is guaranteed that the transmission process of the T-shaped clapper arm is stable and not blocked, and the transmission stability is enhanced.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment technology, specifically to a short-stroke fast transmission mechanism for a dual power supply transfer switch. Background Technology

[0002] ATS (Automatic Transfer Switch) switches are widely used in industrial power supply, emergency power systems, and building power distribution. Their core function is to enable rapid and reliable switching between two power sources, ensuring a continuous and stable power supply to electrical equipment. The short-stroke, fast-acting mechanism, as the core actuator of the ATS switch, directly determines the response speed, connection accuracy, and operational stability of the power switching. Its structural rationality and functional reliability have a decisive impact on the overall performance of the ATS switch.

[0003] Existing short-stroke transmission mechanisms for ATS switches typically consist of an electromagnetic drive component, a transmission arm, a vacuum switch tube, and connecting components. During operation, the electromagnetic drive component generates driving force, which drives the transmission arm to rotate around a fixed axis, thereby driving the moving conductive rod of the vacuum switch tube to move, realizing the closing and opening of the moving contact and completing the switching of dual power supplies.

[0004] However, this type of transmission mechanism lacks an effective angle and position compensation structure, making it difficult to adjust for insufficient machining accuracy and errors generated during assembly. This leads to misalignment between the moving conductive rod and the vacuum switch tube contacts and output ports, which in turn affects the smoothness of the transmission process and becomes the core problem restricting its operational reliability. Summary of the Invention

[0005] The purpose of this invention is to provide a short-stroke fast transmission mechanism for a dual-power transfer switch, which aims to improve the problem in the prior art where the moving conductive rod is prone to misalignment with the vacuum switch tube contacts and output port due to errors in machining accuracy.

[0006] The objective of this invention is achieved through the following technical solution: a short-stroke fast transmission mechanism for a dual power supply transfer switch, comprising a switch housing, wherein a transmission bearing is provided inside the switch housing, a T-shaped contact arm is rotatably connected to the outside of the transmission bearing, and a vacuum switch tube is provided inside the switch housing, wherein a compensation mechanism is provided between the vacuum switch tube and the T-shaped contact arm. The compensation mechanism includes a positioning pin, a threaded groove on the outer side of the positioning pin, and a pressure plate fitted on the top of the positioning pin. The compensation mechanism also includes a boss, and a movable conductive rod is provided at the front end of the boss and the front end of the vacuum switch tube. An outer spherical shell is fixedly connected to the end of the movable conductive rod, and an inner spherical shell is rotatably connected to the inner side of the outer spherical shell. An internally threaded tube is rotatably connected between the two inner spherical shells. The compensation mechanism also includes abutment shafts, with one end of each abutment shaft threaded to one end of an internally threaded tube. Multiple sliders are fixedly connected to the outside of the abutment shafts, and a retaining ring is sleeved on the outside of each slider.

[0007] As a further description of the above technical solution: The outer side of the fixed ring is fixedly connected to the inner wall of the inner spherical shell, and the slider is slidably connected to the inner side of the fixed ring. The shape of the other end of the abutting shaft is compatible with the shape of the inner side of the outer spherical shell. As a further description of the above technical solution: The switch housing is also equipped with a spring assembly, one end of which abuts against the T-shaped mating wall, and the other end of which abuts against the mounting bracket. As a further description of the above technical solution: The T-shaped mating wall includes a T-shaped rod, one end of which is provided with an output port, and an adjustment groove is provided on the T-shaped rod; As a further description of the above technical solution: The pressure plate is threadedly connected to the positioning pin through a threaded groove, and the bottom of the pressure plate abuts against the top of the T-shaped mating wall to fix the positioning pin. As a further description of the above technical solution: The outer side of the positioning pin is slidably connected to the inside of the adjustment groove, and friction surfaces are provided around the bottom of the pressing plate and the top of the adjustment groove. As a further description of the above technical solution: The top of the switch housing is covered with a cover, and a mounting bracket is fixed inside the switch housing. A drive coil is mounted on the mounting bracket, and a relay is located next to the drive coil. One end of the vacuum switch tube is connected to a current transformer. Copper busbars are installed inside the two vacuum switch tubes and the current transformer, and the copper busbars extend to the outside of the switch housing. As a further description of the above technical solution: When the drive coil is energized, it generates electromagnetic force to drive the T-shaped mating wall to rotate around the transmission bearing. When the T-shaped mating wall rotates, it drives the compensation mechanism to operate. The compensation mechanism cooperates with the vacuum switch tube through the moving conductive rod to realize the rapid switching of the circuit. Moreover, the spherical shell structure and threaded groove of the compensation mechanism can compensate for processing and assembly errors during the transmission process, ensuring the stability of short-stroke transmission.

[0008] Compared with the prior art, the advantages of the present invention are as follows: 1. Through the cooperation of the positioning pin, pressure plate and threaded groove of the compensation mechanism, the positioning pin is driven to adjust and fix its position in the adjustment groove. Then, after adjusting the relative angle by rotating the inner ball shell, the two ends are driven to move against the two ends of the axial direction and against the outer ball shell, locking the relative angle of the inner ball shell. This drives the moving conductive rod to accurately connect the vacuum switch tube contacts and output port, effectively solving the problem of misalignment caused by insufficient processing accuracy and assembly error, ensuring that the T-shaped matching arm transmission process is smooth and without jamming, and enhancing transmission stability.

[0009] 2. The electromagnetic drive unit drives the drive coil to generate electromagnetic force, which pushes the T-shaped clasping arm to rotate around the transmission bearing. Simultaneously, it drives its own drive rod to switch the relay state. Through the positioning pin, it drives the compensation mechanism and the insulating operating rods of the two vacuum switch tubes to move in opposite directions. With the help of the spring assembly, it drives each component to reset in reverse. At the same time, the current transformer monitors the circuit and the copper busbar transmits the current. It can realize the rapid synchronous switching of dual power supplies with a single drive action. The reset is reliable and the circuit switching is safe and stable, and it can operate stably for a long time. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the main body of an embodiment of a short-stroke rapid transmission mechanism for a dual-power transfer switch proposed in this invention; Figure 2 This is a plan view of an embodiment of a short-stroke rapid transmission mechanism for a dual-power transfer switch proposed in this invention; Figure 3 This is a schematic diagram of the mounting bracket for a short-stroke fast transmission mechanism for a dual-power transfer switch proposed in this invention. Figure 4 This is a schematic diagram of the structure of a relay for a short-stroke fast transmission mechanism for a dual-power transfer switch proposed in this invention; Figure 5 This is a schematic diagram of the T-shaped mating wall of a short-stroke fast transmission mechanism for a dual-power transfer switch proposed in this invention; Figure 6 This is a schematic diagram of the positioning pin of a short-stroke fast transmission mechanism for a dual-power transfer switch proposed in this invention; Figure 7 This is a schematic diagram of the compensation mechanism of a short-stroke fast transmission mechanism for a dual-power transfer switch proposed in this invention. Figure 8 This is a schematic diagram of the internally threaded tube of a short-stroke rapid transmission mechanism for a dual-power transfer switch proposed in this invention.

[0011] Labeling Explanation: 1. Switch housing; 2. Cover; 3. Mounting bracket; 4. Drive coil; 5. Relay; 6. T-shaped mating wall; 601. T-shaped rod; 602. Output port; 603. Adjustment groove; 7. Transmission bearing; 8. Compensation mechanism; 801. Positioning pin; 802. Threaded groove; 803. Pressure plate; 804. Boss; 805. Moving conductive rod; 806. Outer spherical shell; 807. Inner spherical shell; 808. Internally threaded tube; 809. Abutment shaft; 810. Slider; 811. Retaining ring; 9. Spring assembly; 10. Vacuum switch tube; 11. Current transformer; 12. Copper busbar. Detailed Implementation

[0012] The present invention will now be described in detail with reference to the accompanying drawings and embodiments: like Figures 1 to 8 The diagram shows an embodiment of a short-stroke rapid transmission mechanism for a dual-power transfer switch provided by the present invention. This embodiment provides a short-stroke rapid transmission mechanism for a dual-power transfer switch, including a switch housing 1. The switch housing 1 provides mounting support for all components of the entire transmission mechanism, ensuring the orderly arrangement of each component, maintaining the overall structural stability of the mechanism, and protecting the internal components from external interference. A transmission bearing 7 is provided inside the switch housing 1. The transmission bearing 7 provides support for the rotation of the T-shaped connecting arm, reducing the friction during the rotation of the T-shaped connecting arm, ensuring the smooth rotation of the T-shaped connecting arm, and ensuring the smoothness of the transmission process. The T-shaped connecting arm is rotatably connected to the outside of the transmission bearing 7. As the core component of power transmission, the T-shaped connecting arm receives the driving force of the electromagnetic drive unit and transmits it synchronously in two directions, realizing the synchronous operation of the relay 5 state switching and the dual-channel vacuum switch tube 10, ensuring that a single drive action completes the dual-channel power switching.

[0013] The switch housing 1 houses a vacuum switch tube 10, which switches between two power sources by closing and opening its moving contact. This ensures the reliability of circuit connection and disconnection, preventing leakage and short circuits during circuit switching. A compensation mechanism 8 is installed between the vacuum switch tube 10 and the T-shaped connecting arm. This mechanism compensates for insufficient machining precision and errors generated during assembly, adjusts the alignment accuracy between the moving conductive rod 805 and the contacts and output port 602 of the vacuum switch tube 10, locks the relative positions of each component, ensures the stability of the transmission process, and prevents transmission jamming and misalignment. The switch housing 1 also houses a spring assembly 9. When a reset command is triggered, the spring assembly 9 releases its stored elastic potential energy, pushing the T-shaped connecting arm to rotate in the opposite direction, resetting each component and restoring the device to its initial standby state. This ensures the reliability of the reset action. One end of the spring assembly 9 abuts against the T-shaped connecting wall 6, and the other end abuts against the mounting bracket 3.

[0014] The top of the switch housing 1 is covered with a cover 2, which seals and protects all the internal components of the switch housing 1, preventing dust and debris from entering the switch housing 1 and affecting the normal operation of the components. The switch housing 1 is fixed with a mounting bracket 3, which provides mounting points for components such as the drive coil 4 and the spring assembly 9, ensuring that the drive coil 4, the spring assembly 9 and other components are fixed in position and do not shift during operation. The drive coil 4 is installed on the mounting bracket 3. When the drive coil 4 is energized, it generates electromagnetic force, which provides driving force for the rotation of the T-shaped connecting arm, ensuring that the T-shaped connecting arm can quickly obtain rotational torque and realize short-stroke fast transmission.

[0015] A relay 5 is provided on the side of the drive coil 4. The relay 5 responds to the switching and reset commands of the control system to control the on and off of the drive coil 4, thereby controlling the generation and disappearance of electromagnetic force and realizing precise control of the entire device's operation. One end of the vacuum switch tube 10 is connected to a current transformer 11. The current transformer 11 monitors the current changes in the circuit in real time, provides feedback on the circuit's operating status, promptly detects circuit abnormalities, and ensures the safety and reliability of the circuit switching and operation process. Copper busbars 12 are installed inside the two vacuum switch tubes 10 and the current transformer 11. The copper busbars 12 serve as connecting components for the external circuit, smoothly transmitting the current in the circuit to the external load, while simultaneously enabling the vacuum switch tubes 10 to conduct with the external circuit, ensuring the stability of current transmission. The copper busbars 12 extend to the outside of the switch housing 1.

[0016] The compensation mechanism 8 includes a positioning pin 801, which works with the adjusting groove 603 and the pressure plate 803 to fine-tune the position of the T-shaped clapping arm, ensuring that the T-shaped clapping arm is in a horizontal state, laying the foundation for transmission stability. At the same time, it transmits the power of the T-shaped clapping arm to the compensation mechanism 8. The outer side of the positioning pin 801 is provided with a threaded groove 802, which provides a fit for the installation and rotation of the pressure plate 803. It is convenient to adjust the position of the positioning pin 801 by rotating the pressure plate 803, and at the same time, it fixes the pressure plate 803 to the positioning pin 801 to prevent the positioning pin 801 from shifting position. The top of the positioning pin 801 is fitted with the pressure plate 803, which fixes the position of the positioning pin 801 by fitting with the threaded groove 802. The bottom friction surface increases the friction force to ensure that the positioning pin 801 does not loosen or shift during transmission, ensuring positioning reliability.

[0017] The compensation mechanism 8 also includes a boss 804, which receives the power transmitted by the T-shaped clasping arm and transmits the power to the moving conductive rod 805, ensuring that the moving conductive rod 805 can move synchronously with the rotation of the T-shaped clasping arm and guaranteeing the stability of power transmission. Moving conductive rods 805 are provided at the front ends of both the boss 804 and the vacuum switch tube 10. These moving conductive rods 805 connect the boss 804 and the vacuum switch tube 10, driving the closing and opening of the moving contacts of the vacuum switch tube 10 to achieve circuit conduction and disconnection, while ensuring the accuracy of power transmission. An outer spherical shell 806 is fixedly connected to the end of the moving conductive rod 805. The outer spherical shell 806 provides installation support and rotation space for the inner spherical shell 807, and also receives the abutment shaft 80. The abutment force of 9 forms a reverse support for the abutment shaft 809, which, together with the abutment shaft 809, locks the relative angle of the inner spherical shell 807. The inner spherical shell 807 is rotatably connected to the inner side of the outer spherical shell 806. The inner spherical shell 807 can rotate relative to the outer spherical shell 806 to adjust the angle of the moving conductive rod 805, so that the moving conductive rod 805 is precisely aligned with the contacts and output port 602 of the vacuum switch tube 10, compensating for angle errors. An internally threaded tube 808 is rotatably connected between the two inner spherical shells 807. The internally threaded tube 808 drives the abutment shafts 809 at both ends to move axially through rotation, realizing the abutment and separation of the abutment shaft 809 and the outer spherical shell 806, thereby locking or unlocking the relative angle of the inner spherical shells 807 and ensuring the stability after angle adjustment.

[0018] The compensation mechanism 8 also includes an abutment shaft 809, which cooperates with the internally threaded tube 808. When the internally threaded tube 808 is rotated, it moves axially, abutting against the outer spherical shell 806 and locking the relative angle of the inner spherical shell 807, preventing the inner spherical shell 807 from rotating during transmission and ensuring angular stability. The adjacent ends of the two abutment shafts 809 are respectively threaded to both ends of the internally threaded tube 808. Multiple sliders 810 are fixedly connected to the outer side of the abutment shafts 809. These sliders 810 cooperate with the retaining ring 811 to restrict the movement trajectory of the abutment shafts 809, ensuring that the abutment shafts 809 only move axially and preventing... The abutment shaft 809 exhibits radial offset to ensure precise contact between the abutment shaft 809 and the outer spherical shell 806. A fixing ring 811 is fitted on the outer side of the slider 810. The fixing ring 811 is fixed to the inner wall of the inner spherical shell 807, providing sliding support and guidance for the slider 810, restricting the movement direction of the slider 810, and thus restricting the movement trajectory of the abutment shaft 809, ensuring smooth movement of the abutment shaft 809. The outer side of the fixing ring 811 is fixedly connected to the inner wall of the inner spherical shell 807, and the slider 810 is slidably connected to the inner side of the fixing ring 811. The shape of the other end of the abutment shaft 809 is adapted to the inner shape of the outer spherical shell 806.

[0019] The T-shaped connecting wall 6 includes a T-shaped rod 601, which serves as the main structure of the T-shaped connecting arm. It is used to install the output port 602 and the adjustment groove 603, receiving the driving force and transmitting it to relevant components to ensure smooth power transmission. One end of the T-shaped rod 601 has an output port 602, which serves as the power output interface. It works with the moving conductive rod 805 to switch between dual power sources, ensuring normal current transmission after power switching. The T-shaped rod 601 has an adjustment groove 603, which provides sliding space for the positioning pin 801, facilitating adjustment of the positioning pin 801. Position 01 ensures that the T-shaped clasping arm remains horizontal, guaranteeing stability during transmission. The pressure plate 803 is threadedly connected to the positioning pin 801 via the threaded groove 802. The bottom of the pressure plate 803 abuts against the top of the T-shaped clasping wall 6 to fix the positioning pin 801. The outer side of the positioning pin 801 is slidably connected inside the adjustment groove 603. Friction surfaces are provided around the bottom of the pressure plate 803 and the top of the adjustment groove 603. These friction surfaces increase the friction between the pressure plate 803 and the adjustment groove 603, further enhancing the fixing reliability of the positioning pin 801 and preventing it from loosening.

[0020] When the drive coil 4 is energized, it generates electromagnetic force to drive the T-shaped mating wall 6 to rotate around the transmission bearing 7. When the T-shaped mating wall 6 rotates, it drives the compensation mechanism 8 to move. The compensation mechanism 8 cooperates with the vacuum switch tube 10 through the moving conductive rod 805 to realize the rapid switching of the circuit. Moreover, the spherical shell structure and threaded groove 802 of the compensation mechanism 8 can compensate for processing and assembly errors during the transmission process, ensuring the stability of short-stroke transmission.

[0021] Working principle: In the initial debugging stage after the device is assembled, the entire transmission mechanism is first manually calibrated. First, the positioning pin 801 is operated by rotating the pressure plate 803 to move it up and down along the threaded groove 802, thereby changing the specific position of the positioning pin 801 inside the adjustment groove 603 until the positioning pin 801 is in the optimal position that allows the T-shaped clasping arm to remain horizontal. Then, the pressure plate 803 is tightened, and the position of the positioning pin 801 is fixed by the friction force generated by the friction surface around the bottom of the pressure plate 803 and the top of the adjustment groove 603.

[0022] After adjusting the positioning pin 801, rotate the two inner spherical shells 807 to adjust their relative angle, ensuring that the moving conductive rod 805, the contact of the vacuum switch tube 10, and the two output ports 602 are perfectly aligned. Once aligned, rotate the internal threaded tube 808. Since the internal threaded tube 808 is threadedly connected to the abutment shafts 809 at both ends, rotating the internal threaded tube 808 will cause the two abutment shafts 809 to move synchronously axially towards both ends until the ends of the abutment shafts 809 firmly abut against the inner wall of the outer spherical shell 806. At this point, the outer spherical shell 806 will generate a reverse supporting force on the abutment shafts 809. Through the threaded connection between the abutment shafts 809 and the internal threaded tube 808, the relative angle of the two inner spherical shells 807 is completely locked, preventing rotation during subsequent transmission. This solves the problem of misalignment between the vacuum switch tube 10 and the output ports 602 caused by insufficient machining accuracy or assembly errors.

[0023] When the control system issues a circuit switching command, the electromagnetic drive unit immediately activates. Relay 5 responds to the electrical signal to supply power to drive coil 4. The electromagnetic force generated by the energized drive coil 4 directly acts on the T-shaped connecting arm, giving it the torque to rotate around the transmission bearing 7. Under the continuous action of the electromagnetic force, the T-shaped connecting arm begins to rotate smoothly around the transmission bearing 7. At this time, the position of the positioning pin 801 is fixed. The rotation of the T-shaped connecting arm synchronously transmits power in two directions: firstly, it drives its own drive rod to separate from the control end of relay 5, triggering the state switching of relay 5; secondly, it stably transmits power to the compensation mechanism 8 through the positioning pin 801. The boss 804 of the compensation mechanism 8 moves synchronously with the rotation of the T-shaped connecting arm, thereby driving the insulating operating rods of the two vacuum switch tubes 10 to move towards each other in a preset direction. Since the angle of the inner spherical shell 807 of the compensation mechanism 8 is locked by the cooperation between the abutment shaft 809 and the internal threaded tube 808, the moving conductive rod 805 will not deviate in angle during the movement. It can accurately drive the moving contact of the vacuum switch tube 10 to move, so that the moving contact of one vacuum switch tube 10 is closed and the moving contact of the other is opened, thereby completing the fast and synchronous switching of the dual power supply under a single drive action.

[0024] During the transmission process, the current transformer 11 monitors the current changes in the circuit in real time, and the copper busbar 12, as the connection terminal of the external circuit, smoothly transmits the current to the external load, ensuring the safety and reliability of the circuit switching process. At the same time, since the compensation mechanism 8 has been pre-tuned and locked, the transmission process of the T-shaped connecting arm is not prone to jamming or misalignment due to processing or assembly errors, effectively maintaining the stability of short-stroke transmission.

[0025] When the control system issues a reset command, relay 5 immediately cuts off the power supply to drive coil 4, and the electromagnetic force disappears. At this time, the compressed spring assembly 9 begins to release its stored elastic potential energy, pushing the T-shaped contact arm to rotate in the opposite direction around the transmission bearing 7. On the one hand, this drives the drive rod to reset and re-contact the control terminal of relay 5, restoring relay 5 to its initial state; on the other hand, it drives the positioning pin 801 to slide in the opposite direction within the adjusting groove 603. The boss 804 of the compensation mechanism 8, the moving conductive rod 805, and the insulating operating rod of the vacuum switch tube 10 are simultaneously reset, and the moving contacts of both vacuum switch tubes 10 return to their initial positions, switching the circuit back to its initial state. The current transformer 11 stops monitoring, the copper busbar 12 returns to its standby state, and the entire device returns to its initial position, awaiting the triggering of the next switching command. If a positional shift occurs after long-term operation, the position of the positioning pin 801 and the angle of the inner spherical shell 807 of the compensation mechanism 8 can be finely adjusted again to re-lock and maintain stable operation of the device.

Claims

1. A short-stroke fast-drive mechanism for a dual-power transfer switch, comprising a switch housing (1) for a circuit device of a backup power supply, characterized in that: The inside of the switch housing (1) is provided with a transmission bearing (7) for disconnecting the normal power supply and connecting to the backup power supply. A T-shaped clasp arm is rotatably connected to the outside of the transmission bearing (7). A vacuum switch tube (10) is provided inside the switch housing (1). A compensation mechanism (8) is provided between the vacuum switch tube (10) and the T-shaped clasp arm. The compensation mechanism (8) includes a positioning pin (801), a threaded groove (802) is provided on the outer side of the positioning pin (801), and a pressure plate (803) is sleeved on the top of the positioning pin (801). The compensation mechanism (8) also includes a boss (804), and a moving conductive rod (805) is provided at the front end of the boss (804) and the front end of the vacuum switch tube (10). An outer spherical shell (806) is fixedly connected to the end of the moving conductive rod (805), and an inner spherical shell (807) is rotatably connected to the inner side of the outer spherical shell (806). An internal threaded tube (808) is rotatably connected between the two inner spherical shells (807). The compensation mechanism (8) also includes abutment shafts (809), with one end of each abutment shaft (809) threadedly connected to the two ends of the internal threaded tube (808). Multiple sliders (810) are fixedly connected to the outside of the abutment shafts (809), and a fixing ring (811) is sleeved on the outside of the sliders (810).

2. The short-stroke rapid transmission mechanism for a dual-power transfer switch according to claim 1, characterized in that: The outer side of the fixed ring (811) is fixedly connected to the inner wall of the inner spherical shell (807), and the slider (810) is slidably connected to the inner side of the fixed ring (811). The shape of the other end of the abutment shaft (809) is adapted to the shape of the inner side of the outer spherical shell (806).

3. The short-stroke rapid transmission mechanism for a dual-power transfer switch according to claim 1, characterized in that: The switch housing (1) is also provided with a spring assembly (9) inside. One end of the spring assembly (9) abuts against the T-shaped mating wall (6), and the other end of the spring assembly (9) abuts against the mounting bracket (3).

4. The short-stroke rapid transmission mechanism for a dual-power transfer switch according to claim 1, characterized in that: The T-shaped mating wall (6) includes a T-shaped rod (601), one end of which is provided with an output port (602), and an adjustment groove (603) is provided on the T-shaped rod (601).

5. The short-stroke rapid transmission mechanism for a dual-power transfer switch according to claim 4, characterized in that: The pressure plate (803) is threadedly connected to the positioning pin (801) through the threaded groove (802), and the bottom of the pressure plate (803) abuts against the top of the T-shaped mating wall (6) to fix the positioning pin (801).

6. The short-stroke rapid transmission mechanism for a dual-power transfer switch according to claim 4, characterized in that: The outer side of the positioning pin (801) is slidably connected to the inside of the adjustment groove (603), and friction surfaces are provided around the bottom of the pressure plate (803) and the top of the adjustment groove (603).

7. The short-stroke rapid transmission mechanism for a dual-power transfer switch according to claim 1, characterized in that: The top of the switch housing (1) is covered with a cover (2). A mounting bracket (3) is fixed inside the switch housing (1). A drive coil (4) is mounted on the mounting bracket (3). A relay (5) is provided on the side of the drive coil (4). One end of the vacuum switch tube (10) is connected to a current transformer (11). Copper busbars (12) are installed on the inner sides of both vacuum switch tubes (10) and the current transformer (11). The copper busbars (12) extend to the outer side of the switch housing (1).

8. The short-stroke rapid transmission mechanism for a dual-power transfer switch according to claim 7, characterized in that: After the drive coil (4) is energized, it generates electromagnetic force to drive the T-shaped mating wall (6) to rotate around the transmission bearing (7). When the T-shaped mating wall (6) rotates, it drives the compensation mechanism (8) to move. The compensation mechanism (8) cooperates with the vacuum switch tube (10) through the moving conductive rod (805) to realize the rapid switching of the circuit. The spherical shell structure and threaded groove (802) of the compensation mechanism (8) can compensate for processing and assembly errors during transmission, ensuring the stability of short-stroke transmission.

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