Mechanical interlocking mechanism and contactor mechanical interlocking device
Patent Information
- Application Number
- CN202522179565.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-14
- Publication Date
- 2026-09-11
- Estimated Expiration
- 2035-10-14
AI Technical Summary
[0004]至于三个接触器之间的连锁问题，比如：自耦降压启动的主接触器与星接触器之间的连锁，变频启动的接触器与自耦降压启动的主接触器之间的连锁，目前市场上海没有三个接触器之间的机械连锁产品
[0020]本实用新型的有益效果：在实际应用中，起始时，复位弹簧处于伸展状态，左活动限位孔与左固定限位孔具有二分之一的孔位相通，左联动杆的驱动斜角与该二分之一的孔位对应，中活动限位孔与中固定限位孔具有二分之一的孔位相通，中联动杆的驱动斜角与该二分之一的孔位对应，右活动限位孔与右固定限位孔具有二分之一的孔位相通，右联动杆的驱动斜角与该二分之一的孔位对应；当左接触器通电，左接触器的线圈模组的衔铁驱动左联动杆下移，下移的左联动杆的驱动斜角逐渐插入左活动限位孔与左固定限位孔相通的孔位内，即左联动杆的驱动斜角逐渐插入左活动限位孔内，在此过程中，驱动斜角会抵触连锁杆朝左平移，直至连锁杆上的左活动限位孔与基板上的左固定限位孔完全相通，此时中活动限位孔与中固定限位孔不相通，右活动限位孔与右固定限位孔不相通，连锁杆的顶面抵触中联动杆的驱动斜角和右联动杆的驱动斜角，使得中联动杆和右联动杆无法向下移动，左接触器闭合，中接触器和右接触器不能闭合；同理地，当中接触器通电时，中联动杆的驱动斜角逐渐插入中活动限位孔内，连锁杆朝右平移，直至连锁杆上的中活动限位孔与基板上的中固定限位孔完全相通，此时左活动限位孔与左固定限位孔不相通，连锁杆的顶面抵触左联动杆的驱动斜角，左联动杆无法向下移动，右活动限位孔与右固定限位孔相通，右联动杆能够选择性向下移动，中接触器闭合，左接触器不能闭合，右接触器能够选择性闭合或不闭合；当右接触器通电时，右联动杆的驱动斜角逐渐插入右活动限位孔内，连锁杆朝右平移，直至连锁杆上的右活动限位孔与基板上的右固定限位孔完全相通，此时左活动限位孔与左固定限位孔不相通，连锁杆的顶面抵触左联动杆的驱动斜角，左联动杆无法向下移动，中活动限位孔与中固定限位孔相通，中联动杆能够选择性向下移动，右接触器闭合，左接触器不能闭合，中接触器能够选择性闭合或不闭合。本申请能够满足三个接触器之间的机械连锁，以确保起到、切换过程的安全可靠。
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Figure CN224745607U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical interlocking technology, and in particular to a mechanical interlocking mechanism and a contactor mechanical interlocking device. Background Technology
[0002] In electrical control systems, especially motor starting control, such as star-delta starting and autotransformer reduced voltage starting, in addition to electrical interlocking, mechanical interlocking is also required between the starting contactor and the running contactor to ensure safe and reliable switching process. Usually, the mechanical interlocking of contactors produced by contactor manufacturers can only achieve mechanical interlocking between two contactors.
[0003] Currently, in some key engineering projects, for high-power exhaust and smoke extraction devices, each motor uses two sets of starting devices (e.g., one set of frequency converter starting and one set of bypass autotransformer reduced voltage starting) to improve the operational reliability of the equipment. If one set of starting devices fails, it can be switched to the other set. During the switching process between the two sets of starting devices, in order to ensure absolute safety and reliability, it is essential to add a mechanical interlock in addition to the electrical interlock.
[0004] Regarding the interlocking issues between the three contactors, such as the interlocking between the main contactor and the star contactor in autotransformer reduced voltage starting, and the interlocking between the contactor in frequency converter starting and the main contactor in autotransformer reduced voltage starting, there are currently no mechanical interlocking products for the three contactors on the Shanghai market.
[0005] Therefore, the defects are very obvious, and a solution is urgently needed. Utility Model Content
[0006] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a mechanical interlocking mechanism and a contactor mechanical interlocking device.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] A mechanical interlocking mechanism includes a base plate, an interlocking rod, a return spring, and several fixed slots. The fixed slots are linearly mounted on one side of the base plate, and a guide groove is formed between the inner cavity of the fixed slot and the side of the base plate. The interlocking rod is translatably disposed between the base plate and the fixed slots, and slides through the guide grooves. The base plate has a mounting hole, a set of left fixed limiting holes, a set of middle fixed limiting holes, and a set of right fixed limiting holes, which are arranged in a straight line. The interlocking rod has a spring slot hole, a set of left movable limiting holes, a set of middle movable limiting holes, and a set of right movable limiting holes. The return spring is mounted in the spring slot hole and is located inside the mounting hole. The two ends of the return spring can elastically abut against the two opposite side walls of the mounting hole, respectively.
[0009] When the return spring is in the extended state, the left movable limit hole and the left fixed limit hole are connected by half of their holes, the middle movable limit hole and the middle fixed limit hole are connected by half of their holes, and the right movable limit hole and the right fixed limit hole are connected by half of their holes.
[0010] When the drive linkage moves to the point where the left movable limit hole and the left fixed limit hole are fully connected, the return spring is in a compressed state, the middle movable limit hole and the middle fixed limit hole are not connected, and the right movable limit hole and the right fixed limit hole are not connected.
[0011] When the drive linkage moves to the point where the middle movable limit hole and the middle fixed limit hole are fully connected, the return spring is in a compressed state, the left movable limit hole and the left fixed limit hole are not connected, and the right movable limit hole and the right fixed limit hole are fully connected.
[0012] When the drive linkage moves to the point where the right movable limit hole and the right fixed limit hole are fully connected, the return spring is in a compressed state, the left movable limit hole and the left fixed limit hole are not connected, and the middle movable limit hole and the middle fixed limit hole are fully connected.
[0013] Furthermore, the mechanical interlocking mechanism also includes a set of left linkage rods, a set of middle linkage rods, and a set of right linkage rods. The left, middle, and right linkage rods are all located on the side of the base plate away from the interlocking rods. The left linkage rod corresponds to the left fixed limiting hole, the middle linkage rod corresponds to the middle fixed limiting hole, and the right linkage rod corresponds to the right fixed limiting hole. Each of the ends of the left, middle, and right linkage rods near the base plate has a driving angle. The direction of the driving angle of the left linkage rod is opposite to that of the middle linkage rod, and the direction of the driving angle of the middle linkage rod is the same as that of the right linkage rod. When the movable limiting hole and the fixed limiting hole are connected in half, the driving angle corresponds to that half of the hole position. The driving angle can be inserted into that half of the hole position to drive the interlocking rod to translate.
[0014] Furthermore, positioning posts are protruding from both opposite sidewalls of the spring slot hole, and the end of the reset spring is sleeved on the positioning posts.
[0015] Furthermore, there are two mounting holes, two spring slot holes, and two return springs. The two mounting holes, two spring slot holes, and two return springs are set one-to-one, and one mounting hole is located between two adjacent fixed limit holes.
[0016] Furthermore, a mounting bracket is provided on the side of the substrate.
[0017] Furthermore, the substrate has several locking holes.
[0018] Furthermore, a cover plate is installed on the other side of the substrate, which covers the mounting holes.
[0019] This utility model also provides a contactor mechanical interlocking device, including a left contactor, a middle contactor, a right contactor, and the aforementioned mechanical interlocking mechanism. The left contactor, the middle contactor, and the right contactor are linearly mounted on the side of the base plate of the mechanical interlocking mechanism away from the interlocking rod. The left linkage rod is connected to the armature of the coil module of the left contactor, the middle linkage rod is connected to the armature of the coil module of the middle contactor, and the right linkage rod is connected to the armature of the coil module of the right contactor.
[0020] The beneficial effects of this utility model are as follows: In practical application, initially, the return spring is in the extended state, the left movable limiting hole and the left fixed limiting hole are connected by half of their positions, and the driving angle of the left linkage rod corresponds to this half of the hole position; the middle movable limiting hole and the middle fixed limiting hole are connected by half of their positions, and the driving angle of the middle linkage rod corresponds to this half of the hole position; the right movable limiting hole and the right fixed limiting hole are connected by half of their positions, and the driving angle of the right linkage rod corresponds to this half of the hole position; when the left contactor is energized, the armature of the coil module of the left contactor drives... As the left linkage rod moves downward, its driving angle gradually inserts into the hole where the left movable limiting hole and the left fixed limiting hole communicate. During this process, the driving angle will resist the interlocking rod as it moves to the left until the left movable limiting hole on the interlocking rod is fully connected to the left fixed limiting hole on the base plate. At this point, the middle movable limiting hole and the middle fixed limiting hole are not connected, and the right movable limiting hole and the right fixed limiting hole are not connected. The top surface of the interlocking rod abuts against the driving angles of the middle and right linkage rods, causing the middle and right linkage rods to... When the lever moves downwards, the left contactor closes, but the middle and right contactors cannot close. Similarly, when the middle contactor is energized, the driving angle of the middle linkage gradually inserts into the middle movable limit hole, and the interlocking rod moves to the right until the middle movable limit hole on the interlocking rod is fully connected to the middle fixed limit hole on the base plate. At this point, the left movable limit hole is not connected to the left fixed limit hole, and the top surface of the interlocking rod abuts against the driving angle of the left linkage, preventing the left linkage from moving downwards. The right movable limit hole is connected to the right fixed limit hole, allowing the right linkage to selectively move downwards, closing the middle contactor but preventing the left contactor from closing. The right contactor can selectively close or not close. When the right contactor is energized, the driving angle of the right linkage rod gradually inserts into the right movable limit hole, and the interlocking rod moves to the right until the right movable limit hole on the interlocking rod is fully connected to the right fixed limit hole on the base plate. At this time, the left movable limit hole and the left fixed limit hole are not connected, the top surface of the interlocking rod abuts against the driving angle of the left linkage rod, and the left linkage rod cannot move downward. The middle movable limit hole and the middle fixed limit hole are connected, and the middle linkage rod can selectively move downward. The right contactor closes, the left contactor cannot close, and the middle contactor can selectively close or not close. This application can satisfy the mechanical interlock between the three contactors to ensure the safety and reliability of the operation and switching process. Attached Figure Description
[0021] Figure 1 This is a three-dimensional structural diagram of the mechanical interlocking mechanism of this utility model, showing that half of the movable limiting hole and the fixed limiting hole are connected.
[0022] Figure 2This is a three-dimensional structural diagram of the mechanical interlocking mechanism of this utility model, showing the left linkage rod, middle linkage rod, and right linkage rod concealed, with the left movable limiting hole and the left fixed limiting hole fully connected.
[0023] Figure 3 This is a three-dimensional structural diagram of the mechanical interlocking mechanism of this utility model, showing the mechanism with the left linkage rod, middle linkage rod, and right linkage rod concealed and in a state where the left movable limiting hole and the left fixed limiting hole are fully connected.
[0024] Figure 4 This is an exploded structural diagram of the mechanical interlocking mechanism of this utility model after concealing the left linkage, middle linkage, and right linkage.
[0025] Figure 5 This is a three-dimensional structural diagram of the interlocking rod of this utility model.
[0026] Figure 6 This is a three-dimensional structural diagram of the left linkage rod, middle linkage rod, or right linkage rod of this utility model.
[0027] Figure 7 This is a three-dimensional structural diagram of the contactor mechanical interlocking device of this utility model.
[0028] Explanation of reference numerals in the attached figures:
[0029] 1. Base plate; 2. Interlocking rod; 3. Return spring; 4. Fixing slot; 5. Mounting hole; 6. Left fixed limit hole; 7. Middle fixed limit hole; 8. Right fixed limit hole; 9. Spring slot hole; 10. Left movable limit hole; 11. Middle movable limit hole; 12. Right movable limit hole; 13. Left linkage rod; 14. Middle linkage rod; 15. Right linkage rod; 16. Drive angle; 17. Positioning post; 18. Mounting bracket; 19. Locking hole; 20. Cover plate; 21. Left contactor; 22. Middle contactor; 23. Right contactor. Detailed Implementation
[0030] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.
[0031] like Figures 1 to 7As shown, the present invention provides a mechanical interlocking mechanism, which includes a base plate 1, an interlocking rod 2, a return spring 3, and several fixed slots 4. The several fixed slots 4 are linearly installed on one side of the base plate 1, and a guide groove is formed between the inner cavity of the fixed slot 4 and the side of the base plate 1. The interlocking rod 2 is translatably disposed between the base plate 1 and the several fixed slots 4, and the interlocking rod 2 slides through the several guide grooves. The base plate 1 has a mounting hole 5, a set of left fixed limiting holes 6, a set of middle fixed limiting holes 7, and a set of right fixed limiting holes 8. The mounting hole 5, the left fixed limiting hole 6, the middle fixed limiting hole 7, and the right fixed limiting hole 8 are arranged in a straight line. The interlocking rod 2 has a spring slot hole 9, a set of left movable limiting holes 10, a set of middle movable limiting holes 11, and a set of right movable limiting holes 12. The return spring 3 is installed in the spring slot hole 9 and is located in the mounting hole 5. The two ends of the return spring 3 can elastically abut against the two opposite side walls of the mounting hole 5 respectively.
[0032] When the return spring 3 is in the extended state, the left movable limiting hole 10 and the left fixed limiting hole 6 are connected by half of their holes, the middle movable limiting hole 11 and the middle fixed limiting hole 7 are connected by half of their holes, and the right movable limiting hole 12 and the right fixed limiting hole 8 are connected by half of their holes.
[0033] When the drive linkage 2 moves to the point where the left movable limit hole 10 and the left fixed limit hole 6 are fully connected, the return spring 3 is in a compressed state, the middle movable limit hole 11 and the middle fixed limit hole 7 are not connected, and the right movable limit hole 12 and the right fixed limit hole 8 are not connected.
[0034] When the drive linkage 2 moves to the point where the middle movable limit hole 11 is fully connected to the middle fixed limit hole 7, the return spring 3 is in a compressed state, the left movable limit hole 10 is not connected to the left fixed limit hole 6, and the right movable limit hole 12 is fully connected to the right fixed limit hole 8.
[0035] When the drive linkage 2 moves to the point where the right movable limit hole 12 is fully connected to the right fixed limit hole 8, the return spring 3 is in a compressed state, the left movable limit hole 10 is not connected to the left fixed limit hole 6, and the middle movable limit hole 11 is fully connected to the middle fixed limit hole 7.
[0036] Specifically, a set of left fixed limiting holes 6 has two left fixed limiting holes 6, a set of middle fixed limiting holes 7 has two middle fixed limiting holes 7, a set of right fixed limiting holes 8 has two right fixed limiting holes 8, a set of left movable limiting holes 10 has two left movable limiting holes 10, a set of middle movable limiting holes 11 has two middle movable limiting holes 11, and a set of right movable limiting holes 12 has two right movable limiting holes 12.
[0037] In this embodiment, the mechanical interlocking mechanism further includes a set of left linkage rods 13, a set of middle linkage rods 14, and a set of right linkage rods 15. The left linkage rods 13, 14, and 15 are all located on the side of the base plate 1 away from the interlocking rod 2. The left linkage rod 13 corresponds to the left fixed limiting hole 6, the middle linkage rod 14 corresponds to the middle fixed limiting hole 7, and the right linkage rod 15 corresponds to the right fixed limiting hole 8. The end of the left linkage rod 13 closest to the base plate 1, the end of the middle linkage rod 14 closest to the base plate 1, and the right linkage rod 15... 5. A drive angle 16 is provided at one end near the substrate 1. The drive angle 16 of the left linkage rod 13 is opposite to the drive angle 16 of the middle linkage rod 14 (back to back). The drive angle 16 of the middle linkage rod 14 is the same as the drive angle 16 of the right linkage rod 15. When the movable limiting hole and the fixed limiting hole are connected by half of the hole position, the drive angle 16 is set to correspond to the half hole position. The drive angle 16 can be inserted into the half hole position to drive the interlocking rod 2 to translate.
[0038] Specifically, a set of left linkage rods 13 has two left linkage rods 13, a set of middle linkage rods 14 has two middle linkage rods 14, and a set of right linkage rods 15 has two right linkage rods 15.
[0039] like Figure 7 As shown, this utility model also provides a contactor mechanical interlocking device, including a left contactor 21, a middle contactor 22, a right contactor 23 and the aforementioned mechanical interlocking mechanism. The left contactor 21, the middle contactor 22 and the right contactor 23 are linearly mounted on the side of the base plate 1 of the mechanical interlocking mechanism away from the interlocking rod 2. The left linkage rod 13 is connected to the armature of the coil module of the left contactor 21, the middle linkage rod 14 is connected to the armature of the coil module of the middle contactor 22, and the right linkage rod 15 is connected to the armature of the coil module of the right contactor 23.
[0040] In practical applications, initially, the return spring 3 is in the extended state. The left movable limiting hole 10 communicates with the left fixed limiting hole 6 by half its length, and the driving angle 16 of the left linkage rod 13 corresponds to this half-hole position. The middle movable limiting hole 11 communicates with the middle fixed limiting hole 7 by half its length, and the driving angle 16 of the middle linkage rod 14 corresponds to this half-hole position. The right movable limiting hole 12 communicates with the right fixed limiting hole 8 by half its length, and the driving angle 16 of the right linkage rod 15 corresponds to this half-hole position. When the left contactor 21 is energized, the armature of the coil module of the left contactor 21 drives the left linkage rod 13 downwards. The downward-moving left linkage rod 1... The driving angle 16 of the left linkage rod 13 is gradually inserted into the hole where the left movable limiting hole 10 and the left fixed limiting hole 6 communicate. During this process, the driving angle 16 will abut against the interlocking rod 2 and move it to the left until the left movable limiting hole 10 on the interlocking rod 2 is fully connected to the left fixed limiting hole 6 on the base plate 1. At this point, the middle movable limiting hole 11 is not connected to the middle fixed limiting hole 7, and the right movable limiting hole 12 is not connected to the right fixed limiting hole 8. The top surface of the interlocking rod 2 abuts against the driving angle 16 of the middle linkage rod 14 and the driving angle 16 of the right linkage rod 15, preventing the middle linkage rod 14 and the right linkage rod 15 from moving downwards. The left contactor... When contactor 21 is closed, contactors 22 and 23 cannot close. Similarly, when contactor 22 is energized, the drive angle 16 of the middle linkage rod 14 gradually inserts into the middle movable limiting hole 11, and the interlocking rod 2 moves to the right until the middle movable limiting hole 11 on the interlocking rod 2 is fully connected to the middle fixed limiting hole 7 on the base plate 1. At this time, the left movable limiting hole 10 is not connected to the left fixed limiting hole 6, and the top surface of the interlocking rod 2 abuts against the drive angle 16 of the left linkage rod 13. The left linkage rod 13 cannot move downward, and the right movable limiting hole 12 is connected to the right fixed limiting hole 8. The right linkage rod 15 can selectively move downward, contactor 22 closes, contactor 21 cannot close, and contactor 23 cannot close. Contactor 23 can selectively close or not close; when contactor 23 is energized, the driving angle 16 of the right linkage rod 15 gradually inserts into the right movable limiting hole 12, and the interlocking rod 2 moves to the right until the right movable limiting hole 12 on the interlocking rod 2 is fully connected to the right fixed limiting hole 8 on the base plate 1. At this time, the left movable limiting hole 10 is not connected to the left fixed limiting hole 6, the top surface of the interlocking rod 2 abuts against the driving angle 16 of the left linkage rod 13, the left linkage rod 13 cannot move downward, the middle movable limiting hole 11 is connected to the middle fixed limiting hole 7, the middle linkage rod 14 can selectively move downward, the right contactor 23 closes, the left contactor 21 cannot close, and the middle contactor 22 can selectively close or not close.This application can satisfy the mechanical interlocking between three contactors to ensure the safety and reliability of the starting and switching process. It is particularly suitable for interlocking between the main contactor, star contactor and frequency converter contactor of autotransformer starting, such as the interlocking between the main contactor and star contactor of autotransformer starting, and the interlocking between the contactor of frequency converter starting and the main contactor of autotransformer starting.
[0041] In this embodiment, positioning posts 17 protrude from both opposite sidewalls of the spring slot hole 9, and the end of the return spring 3 is sleeved on the positioning post 17. This structural design facilitates the secure installation of the return spring 3 and prevents the return spring 3 from disengaging from the spring slot hole 9 of the interlocking rod 2.
[0042] In this embodiment, there are two mounting holes 5, two spring slot holes 9, and two return springs 3. Each mounting hole 5, spring slot hole 9, and return spring 3 is arranged in a one-to-one correspondence. One mounting hole 5 is located between two adjacent fixed limiting holes; that is, one mounting hole 5 is located between the left fixed limiting hole 6 and the middle fixed limiting hole 7, and the other mounting hole 5 is located between the middle fixed limiting hole 7 and the right fixed limiting hole 8. This structural design helps improve the working stability of the interlocking rod 2.
[0043] In this embodiment, a mounting bracket 18 is provided on the side of the substrate 1, and the housings of the left contactor 21, the middle contactor 22 and the right contactor 23 are respectively fixedly mounted on the corresponding mounting brackets 18.
[0044] In this embodiment, the substrate 1 has a plurality of locking holes 19. The locking holes 19 facilitate the fixing of the substrate 1 onto an external structure.
[0045] In this embodiment, a cover plate 20 is installed on the other side of the substrate 1, and the cover plate 20 covers the mounting hole 5; the cover plate 20 is provided to protect the reset spring 3 in the mounting hole 5.
[0046] All technical features in this embodiment can be freely combined according to actual needs.
[0047] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.
Claims
1. A mechanical interlocking mechanism, characterized in that: The system includes a base plate (1), a chain rod (2), a return spring (3), and several fixing slots (4). The fixing slots (4) are arranged in a straight line on one side of the base plate (1). A guide groove is formed between the inner cavity of the fixing slot (4) and the side of the base plate (1). The chain rod (2) is translatably disposed between the base plate (1) and the fixing slots (4). The chain rod (2) slides through the guide grooves. The base plate (1) has a mounting hole (5), a set of left fixing limiting holes (6), a set of middle fixing limiting holes (7), and a set of right fixing limiting holes (7). The fixed limiting hole (8), mounting hole (5), left fixed limiting hole (6), middle fixed limiting hole (7) and right fixed limiting hole (8) are arranged in a straight line. The interlocking rod (2) is provided with a spring slot hole (9), a set of left movable limiting holes (10), a set of middle movable limiting holes (11) and a set of right movable limiting holes (12). The reset spring (3) is installed in the spring slot hole (9). The reset spring (3) is located in the mounting hole (5). The two ends of the reset spring (3) can elastically abut against the two opposite side walls of the mounting hole (5) respectively. When the return spring (3) is in the extended state, the left movable limiting hole (10) and the left fixed limiting hole (6) are connected by half of their holes, the middle movable limiting hole (11) and the middle fixed limiting hole (7) are connected by half of their holes, and the right movable limiting hole (12) and the right fixed limiting hole (8) are connected by half of their holes. When the drive linkage (2) moves to the point where the left movable limit hole (10) and the left fixed limit hole (6) are fully connected, the return spring (3) is in a compressed state, the middle movable limit hole (11) and the middle fixed limit hole (7) are not connected, and the right movable limit hole (12) and the right fixed limit hole (8) are not connected. When the drive linkage (2) moves to the point where the middle movable limit hole (11) and the middle fixed limit hole (7) are fully connected, the return spring (3) is in a compressed state, the left movable limit hole (10) and the left fixed limit hole (6) are not connected, and the right movable limit hole (12) and the right fixed limit hole (8) are fully connected. When the drive linkage (2) moves to the point where the right movable limit hole (12) and the right fixed limit hole (8) are fully connected, the return spring (3) is in a compressed state, the left movable limit hole (10) and the left fixed limit hole (6) are not connected, and the middle movable limit hole (11) and the middle fixed limit hole (7) are fully connected.
2. The mechanical interlocking mechanism according to claim 1, characterized in that: The mechanical interlocking mechanism also includes a set of left linkage rods (13), a set of middle linkage rods (14), and a set of right linkage rods (15). The left linkage rods (13), middle linkage rods (14), and right linkage rods (15) are all located on the side of the base plate (1) away from the interlocking rods (2). The left linkage rod (13) is corresponding to the left fixed limiting hole (6), the middle linkage rod (14) is corresponding to the middle fixed limiting hole (7), and the right linkage rod (15) is corresponding to the right fixed limiting hole (8). The end of the left linkage rod (13) closest to the base plate (1), the end of the middle linkage rod (14) closest to the base plate (1), and the right linkage rod (15) are all located on the side of the base plate (1). Each of the moving rods (15) near the base plate (1) is provided with a driving angle (16). The direction of the driving angle (16) of the left linkage rod (13) is opposite to that of the driving angle (16) of the middle linkage rod (14), and the direction of the driving angle (16) of the middle linkage rod (14) is the same as that of the driving angle (16) of the right linkage rod (15). When the movable limiting hole and the fixed limiting hole are connected by half of the hole position, the driving angle (16) is set to correspond to the half hole position. The driving angle (16) can be inserted into the half hole position to drive the interlocking rod (2) to translate.
3. The mechanical interlocking mechanism according to claim 1, characterized in that: The two opposite sidewalls of the spring slot hole (9) are provided with positioning posts (17), and the end of the reset spring (3) is sleeved on the positioning post (17).
4. A mechanical interlocking mechanism according to any one of claims 1 to 3, characterized in that: The number of mounting holes (5), the number of spring slot holes (9), and the number of reset springs (3) are all two. The two mounting holes (5), the two spring slot holes (9), and the two reset springs (3) are set one-to-one. One mounting hole (5) is located between two adjacent fixed limit holes.
5. A mechanical interlocking mechanism according to claim 1, characterized in that: A mounting bracket (18) is provided on the side of the substrate (1).
6. A mechanical interlocking mechanism according to claim 1, characterized in that: The substrate (1) has several locking holes (19).
7. A mechanical interlocking mechanism according to claim 1, characterized in that: A cover plate (20) is installed on the other side of the substrate (1), and the cover plate (20) covers the mounting hole (5).
8. A contactor mechanical interlocking device, characterized in that: The device includes a left contactor (21), a middle contactor (22), a right contactor (23), and a mechanical interlocking mechanism as described in claim 2. The left contactor (21), the middle contactor (22), and the right contactor (23) are mounted in a straight line on the side of the base plate (1) of the mechanical interlocking mechanism away from the interlocking rod (2). The left linkage rod (13) is connected to the armature of the coil module of the left contactor (21), the middle linkage rod (14) is connected to the armature of the coil module of the middle contactor (22), and the right linkage rod (15) is connected to the armature of the coil module of the right contactor (23).