A pluggable integrated contactor

Abstract

The application relates to a pluggable integrated contactor, belonging to the technical field of contactors, which comprises a bottom plate, a main contact module and an auxiliary contact module are arranged on the bottom plate, the main contact module is connected with a main outgoing pin, the auxiliary contact module is connected with an auxiliary outgoing pin, and the main outgoing pin and the auxiliary outgoing pin are arranged through the bottom plate; a coil support is further arranged, an iron core and a coil are arranged on the coil support, a yoke is arranged on the coil support and close to the coil, an armature is arranged on the coil support and close to the iron core, a tension spring is arranged between the armature and the coil support, a transmission module is arranged at one end of the armature away from the tension spring, the transmission module can simultaneously act on the main contact module and the auxiliary contact module, the main contact module can supply power to a terminal, and the auxiliary contact module can form contactor interlocking. The application has the functions of built-in H-bridge forward and reverse control logic and contact interlocking, and realizes the effect of integrated self-driving control of the contactor.

Description

Technical Field

[0001] This application relates to the field of contactor technology, and in particular to a pluggable integrated contactor. Background Technology

[0002] In the current operation of power systems, the control of key equipment such as disconnect switches, three-limit switches, and energy storage motors generally relies on contactors or high-power relays. To meet the core requirements of equipment forward and reverse rotation, start-stop switching, etc., the control method usually requires the construction of an H-bridge circuit inside the switchgear through a large number of external wirings to achieve the target control function.

[0003] However, existing devices used for power system control, such as contactors and high-power relays, are mostly designed with multi-pole structures, which can only achieve basic circuit switching functions and do not have built-in "H" bridge forward and reverse control logic and contact interlocking logic required for power system control. Due to the lack of built-in control and interlocking logic, a large amount of external wiring is required to implement control and loops, resulting in messy internal wiring in the switchgear, an increased number of fault points, and more. Furthermore, the complex wiring not only increases the workload of construction but also increases the probability of wiring errors, making subsequent equipment commissioning and maintenance more difficult. Summary of the Invention

[0004] In order to realize the built-in H-bridge forward and reverse control logic and contact interlocking of the contactor, and to achieve the integrated drive control of the contactor itself, this application provides a pluggable integrated contactor.

[0005] This application provides a pluggable integrated contactor. The technical solution adopted is as follows: A pluggable integrated contactor includes a base plate on which a main contact module and an auxiliary contact module are supported. The main contact module is connected to a main lead-out pin, and the auxiliary contact module is connected to an auxiliary lead-out pin. The base plate supports the main lead-out pin and the auxiliary lead-out pin through which both are disposed. It also includes a coil support, on which an iron core and a coil are disposed. A yoke is disposed on the coil support near the coil, and an armature is disposed on the coil support near the iron core. A tension spring is disposed between the armature and the coil support. A transmission module is disposed at the end of the armature away from the tension spring. The transmission module can simultaneously act on the main contact module and the auxiliary contact module. The main contact module can supply power to the terminal, and the auxiliary contact module can form a contactor interlock.

[0006] By adopting the above technical solution, when the coil is energized, an electromagnetic attraction force is generated between the iron core and the armature on the coil support, which increases sharply as the air gap decreases. This attraction force overcomes the reaction force of the tension spring, drives the armature to rotate, and acts on the transmission module. The transmission module is limited by the base plate, so that the rotation of the armature becomes axial movement. Thus, the transmission module simultaneously drives the main contact module and the auxiliary contact module to act, forming a snap-fit ​​magnetic circuit structure. This structure is simple, low-cost, and has a large stroke, while ensuring precise and consistent switching timing. The built-in H-bridge forward and reverse contact structure ensures strict synchronization of the H-bridge switching and interlocking switching timing, structurally avoiding control failures, short-circuit risks, or interlocking failures caused by asynchrony. The main contact module can directly realize the forward and reverse drive power supply of the H-bridge, and the auxiliary contact module realizes the interlocking between contactors. The separation of the main contact module and the auxiliary contact module effectively improves anti-interference. Capability and electrical safety; by changing coil parameters to adapt to different coil voltage levels, it meets various structural adaptations, forming a universal structure. The yoke encloses the magnetic force generated by the coil, forming a complete magnetic circuit, which makes full use of magnetic energy and improves working efficiency. In addition, the main contact module outputs through the main lead, and the auxiliary contact module outputs through the auxiliary lead. The base plate can serve as a supporting structural component to support the lead insertion, and at the same time, the base plate can also play an insulating role, forming a safe pluggable lead integrated structure. No external wiring is required. During installation, the main lead and auxiliary lead are directly inserted into the matching encapsulated equipment, or directly connected through the lead, and the installation can be completed. The highly integrated structure provides great convenience for subsequent debugging and maintenance. It is stable and reliable in operation, avoids a lot of complex wiring, greatly reduces the possible failure points, and reduces the difficulty of debugging.

[0007] Optionally, the main contact module includes multiple sets of main contact stationary springs, with two main contact stationary springs in each set. The main contact stationary springs are connected to the main lead-out pins, and main contacts are provided on the main contact stationary springs. It also includes a contact bridge, which is located on the transmission module. The contact bridge has two main contacts, which correspond to the two main contacts on each set of main contact stationary springs.

[0008] By adopting the above technical solution, the main contact module uses two main contact static springs in each group in conjunction with a double-contact bridge double-break structure. In order to increase the arc distance of the main contacts and increase their arc breaking capability, a double-break structure is formed for the main contacts, which can improve the circuit breaking capability and arc extinguishing effect, and reduce contact resistance and temperature rise. The contact bridge is synchronously driven by the transmission module to ensure that the contact opening and closing actions are consistent and the force is uniform. At the same time, even if one of the two contacts is slightly oxidized or burned, the other contact can still be kept conductive, thus improving the operational reliability of the contactor.

[0009] Optionally, the auxiliary contact module includes multiple first auxiliary moving springs and multiple auxiliary normally closed stationary springs, with the first auxiliary moving springs and the auxiliary normally closed stationary springs arranged in a one-to-one correspondence, and normally closed contacts are provided on the opposite side of the first auxiliary moving springs and the auxiliary normally closed stationary springs. The auxiliary contact module also includes multiple second auxiliary moving springs and multiple auxiliary normally open stationary springs. The second auxiliary moving springs and the auxiliary normally open stationary springs are arranged in a one-to-one correspondence. A normally open contact is provided on the opposite side of the second auxiliary moving springs and the auxiliary normally open stationary springs. When the coil is de-energized, the normally closed contact on the first auxiliary moving spring and the normally closed contact on the auxiliary normally closed stationary spring are engaged, and the normally open contact on the second auxiliary moving spring is disengaged from the normally open contact on the auxiliary normally open contact; when the coil is energized, the normally closed contact on the first auxiliary moving spring and the normally closed contact on the auxiliary normally closed stationary spring are disengaged, and the normally open contact on the second auxiliary moving spring is engaged with the normally open contact on the auxiliary normally open contact. An auxiliary contact is provided between the first auxiliary moving spring and the auxiliary lead-out foot, and between the second auxiliary moving spring and the auxiliary lead-out foot.

[0010] By adopting the above technical solution, the auxiliary contact module uses multiple sets of first auxiliary moving springs and auxiliary normally closed stationary springs, and multiple sets of second auxiliary moving springs and auxiliary normally open stationary springs, which are independently corresponding and interconnected, forming multiple normally closed and normally open auxiliary contacts. The state switching when the coil is energized is clear and the operation is reliable, which can meet the requirements of power system H-bridge forward and reverse control, contact interlocking and multi-channel signal feedback. The multiple sets of auxiliary contacts are synchronously driven by the transmission module, with consistent on and off timing and high control accuracy. An auxiliary contact is set between the auxiliary moving spring and the auxiliary lead-out pin, which can distribute the force and prevent the spring from being deformed by long-term pressure or excessive stress, thereby improving the conduction stability and service life of the auxiliary contacts. The overall structure is compact, realizes strong and weak current isolation, and improves the integration and operational reliability of the device. The auxiliary module is mainly for signal switching, and its requirements for load power-off and arc extinguishing are not high. Therefore, it is different from the main contacts and adopts a single-break structure to simplify the design and achieve a balance between performance and cost.

[0011] Optionally, the transmission module includes a transmission back plate, on which a main linkage arm and an auxiliary linkage arm are connected and disposed. The main linkage arm is provided with a plurality of main pressing protrusions, each of which corresponds to a contact bridge. The contact bridge is located on the main pressing protrusion. The auxiliary linkage arm is provided with a plurality of auxiliary pressing protrusions, the sum of the first auxiliary moving spring and the second auxiliary moving spring being the same as the number of auxiliary pressing protrusions.

[0012] By adopting the above technical solution, the armature presses the transmission back plate to move, and the transmission back plate drives the main linkage arm and the auxiliary linkage arm to move simultaneously. This ensures that while the main contacts are in contact, the normally closed contacts are open and the normally open contacts are in contact, realizing the synchronous linkage on and off of the main contacts and auxiliary contacts. A single transmission module synchronously drives the main contacts and auxiliary contacts with strict timing synchronization, ensuring accurate and consistent control timing, meeting the requirements of H-bridge control and interlocking logic in power systems. The main pressing protrusion corresponds one-to-one with the contact bridge, and the auxiliary pressing protrusion corresponds one-to-one with the auxiliary moving spring, ensuring uniform force on the contacts and reliable contact. There will be no offset or unstable connection during pressing, ensuring stable and reliable operation of the contactor. It can synchronously drive multiple auxiliary contacts to achieve interlocking control.

[0013] Optionally, the contact bridge has a first slot, the main linkage arm has a receiving groove, the contact bridge is located in the receiving groove, the first slot and the main linkage arm are engaged, and a contact spring is provided in the receiving groove. When the contact spring is in a compressed state, it abuts against the contact bridge and the groove wall of the receiving groove.

[0014] By adopting the above technical solution, the contact bridge is located at the bottom of the receiving groove, and the two sides of the first slot are precisely engaged with the main linkage arm. The bottom of the first slot is in close contact with the groove wall of the receiving groove, so that the contact bridge and the main linkage arm are locked together, preventing the contact bridge from swaying back and forth or left and right in the receiving groove. The contact spring is compressed between the contact bridge and the top wall of the receiving groove. The elastic force of the contact spring presses the contact bridge downward, preventing the contact bridge from moving up and down in the receiving groove. Through the engagement of the first slot and the receiving groove and the elastic pressing action of the contact spring, the contact bridge is stably held in the receiving groove.

[0015] Optionally, the base plate is provided with multiple arc-extinguishing grids, and the main contact stationary spring is located between two adjacent arc-extinguishing grids.

[0016] By adopting the above technical solution, when the strong current passing through the main contacts is interrupted, a high-temperature arc will be generated. The magnetic blowout and arc-extinguishing grid cut the long arc into multiple short arc segments, quickly cooling and extinguishing the arc. This avoids the spring elasticity failure caused by overheating, prevents the arc from continuously burning the main contacts and stationary springs, and prevents the contact welding erosion. At the same time, the stationary springs of the main contacts are arranged between adjacent arc-extinguishing grids. As a physical insulation barrier, the arc-extinguishing grid can increase the electrical clearance and creepage distance between the main contacts, block the arc from spreading to adjacent circuits, and improve the insulation withstand voltage level of the main circuit. The arc-extinguishing grid prevents the arc from spreading to the weak current area of ​​the auxiliary contacts, prevents the arc from interfering with the control circuit, and ensures the stable operation of the H-bridge forward and reverse control and interlocking logic.

[0017] Optionally, a support frame is provided on the base plate, and a support column is provided on the side of the coil bracket facing the base plate, and the support frame is engaged between the support columns; The coil bracket has a first locking protrusion at one end near the tension spring, and the armature has a second locking protrusion at one end near the tension spring. Both the first locking protrusion and the second locking protrusion have a second locking groove, and the end of the tension spring is located in the second locking groove.

[0018] By adopting the above technical solution, the coil bracket is supported on the support frame, and the support column clamps the support frame between the support columns, forming multi-point support and locking limit, ensuring that the coil bracket stably carries the coil, ensuring the stability of the coil, armature and other components, ensuring smooth magnetic circuit attraction, avoiding displacement or tilting due to shaking, resulting in uneven attraction force, and realizing rapid positioning and assembly of the coil bracket and the base plate; the two ends of the tension spring are directly hooked into the second slot, realizing plug-and-play locking, improving assembly efficiency.

[0019] Optionally, the coil support is provided with a coil pin, the base plate is provided with a coil lead-out end, the coil pin and the coil lead-out end are electrically connected, and the coil lead-out end is connected with a coil lead-out foot.

[0020] By adopting the above technical solution, the coil pin and the coil lead-out end are stably connected, and the coil lead-out pin is connected to the outside to ensure reliable contact of the coil power supply circuit and realize reliable electrical connection between the coil and the external circuit. The coil lead-out end and the lead-out pin connect the internal circuit to the outside, avoiding direct wiring between the coil and the outside, thus improving safety. The coil pin is directly connected to the coil lead-out pin, without the need for an additional adapter board or complicated wiring.

[0021] Optionally, a clip is provided at one end of the main lead near the main contact stationary spring, the clip clamps the main contact stationary spring, an arc protrusion is provided on the main lead, the arc protrusion abuts against the base plate, an elastic support foot is provided on the main lead, the elastic support foot supports the base plate, and the structure of the auxiliary lead and the coil lead is the same as the structure of the main lead.

[0022] By adopting the above technical solution, the lead-out pins serve as external terminals, facilitating external wiring and enabling quick plugging and unplugging or wiring. This adapts to simplified and rapid wiring within the switchgear, reducing wiring errors and improving installation and commissioning efficiency. Furthermore, the fully integrated design within the contactor reduces potential failure points and shortens installation and commissioning time. The lead-out pins clamp the contact springs via clips, achieving reliable conductive connection. The arc-shaped protrusions on the lead-out pins abut against the base plate, and the elastic support feet provide support and positioning, preventing the lead-out pins from retracting into the contactor during plugging and unplugging, thus preventing connection failure. Simultaneously, the main lead-out pins, auxiliary lead-out pins, and coil lead-out pins adopt the same structure, improving component versatility.

[0023] Optionally, an arc-extinguishing cover is provided on the base plate.

[0024] By adopting the above technical solutions, the arc extinguishing cover can quickly cool and extinguish the arc generated when the main contacts are broken, preventing the arc from continuously burning the contacts and preventing short circuits; the protective cover guides and dissipates the arc heat, reduces internal heat accumulation, separates the inside and outside to prevent the arc from overflowing, and ensures that the contactor can still work safely in harsh environments with high voltage and high temperature; the arc extinguishing cover forms a closed space to prevent dust, lint, and metal shavings from entering the contact area, reducing poor contact and malfunctions, and improving operational reliability.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The snap-fit ​​magnetic circuit features a simple structure, low cost, and large stroke. The transmission module simultaneously drives the main contact module and the auxiliary contact module, ensuring precise and consistent on / off timing. This guarantees strict synchronization between the H-bridge's on / off and interlock switching timings, avoiding control faults, short circuit risks, or interlock failures, thus enabling forward and reverse drive of the H-bridge. The main contact module and auxiliary contact module are separate, effectively improving anti-interference capabilities and electrical safety. Furthermore, the pluggable integrated structure provides great convenience for subsequent debugging and maintenance, ensuring stable and reliable operation. It avoids a large amount of complex wiring, greatly reducing potential failure points and lowering debugging difficulty.

[0026] 2. The double-break structure of the main contacts improves circuit breaking capacity and arc extinguishing effect, while reducing contact resistance and temperature rise. The arc-extinguishing grid cuts the long arc into multiple short arc segments, quickly cooling and extinguishing the arc, preventing spring elasticity failure due to environmental overheating, and preventing the arc from continuously burning the main contacts and stationary springs, thus preventing contact welding erosion. At the same time, the arc-extinguishing grid acts as a physical insulation barrier, increasing the electrical clearance and creepage distance between the main contacts, blocking the arc from spreading to adjacent circuits, and improving the insulation withstand voltage level of the main circuit. The arc-extinguishing cover can quickly cool and extinguish the arc generated when the main contacts are broken, preventing the arc from continuously burning the contacts, preventing short circuits, guiding and dissipating arc heat, reducing internal heat accumulation, ensuring that the contactor can still work safely in harsh environments with high voltage and high temperature, forming a closed space to prevent dust, lint, and metal shavings from entering the contact area, reducing poor contact and malfunctions, and improving operational reliability.

[0027] 3. The auxiliary contact modules are set up independently and interconnectedly to form multiple normally closed and normally open auxiliary contacts, which can meet the requirements of H-bridge forward and reverse control, contact interlocking and multi-channel signal feedback in power systems. Driven synchronously by the transmission module, the on / off timing is consistent, and the control precision is high; it ensures the stable and reliable operation of the contactor and can synchronously drive multiple auxiliary contacts to achieve interlocking control.

[0028] 4. Stable continuity between the coil pin and the coil lead ensures reliable contact in the coil power supply circuit, enabling reliable electrical connection between the coil and external circuits. The coil pin directly connects to the coil lead, eliminating the need for additional adapters or complex wiring. The lead serves as an external terminal, facilitating external wiring and enabling quick plugging and unplugging or wiring. It is compatible with internal wiring in switch cabinets, simplifying and accelerating wiring, reducing wiring errors, and improving installation and commissioning efficiency. Furthermore, the fully integrated design of the contactor reduces potential failure points and shortens installation and commissioning time.

[0029] 5. The bottom of the first slot is fitted and abutted against the wall of the receiving slot, so that the contact bridge and the main linkage arm are fastened together to prevent the contact bridge from swaying back and forth or left and right in the receiving slot. The elastic force of the contact spring presses the contact bridge downward to prevent the contact bridge from moving up and down in the receiving slot, and keeps the contact bridge stably in the receiving slot. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0031] Figure 2 This is a schematic diagram illustrating the internal structure of the contactor in an embodiment of this application.

[0032] Figure 3 This is a schematic diagram illustrating the structure of the coil, armature, and yoke in an embodiment of this application.

[0033] Figure 4 This is a schematic diagram illustrating the structure of the main contact module and the blocking contact module in an embodiment of this application.

[0034] Figure 5 This is a schematic diagram illustrating the structure of the transmission module in an embodiment of this application.

[0035] Figure 6 This is a schematic diagram illustrating the structure of the main contact stationary spring, the first auxiliary moving spring, and the second auxiliary moving spring in an embodiment of this application.

[0036] Figure 7 This is a cross-sectional structural diagram illustrating the clip, the arc protrusion, and the elastic support leg in an embodiment of this application.

[0037] Figure 8 This is a circuit diagram illustrating the operating principle of an embodiment of this application.

[0038] Explanation of reference numerals in the attached drawings: 11. Base plate; 12. Arc extinguishing grid; 13. Support frame; 14. Coil lead-out end; 15. Arc extinguishing cover; 16. Positioning hole; 2. Main contact module; 21. Main contact stationary spring; 22. Main contact; 23. Contact bridge; 231. First slot; 3. Auxiliary contact module; 31. First auxiliary moving spring; 32. Auxiliary normally closed stationary spring; 33. Normally closed contact; 34. Second auxiliary moving spring; 35. Auxiliary normally open stationary spring; 36. Normally open contact; 37. Auxiliary contact element; 41. Main lead-out foot; 411. Clamping piece; 412. Arc 413. Protrusion; 42. Elastic support foot; 43. Auxiliary lead-out foot; 51. Coil lead-out foot; 51. Coil bracket; 511. Support column; 512. Coil pin; 52. Iron core; 53. Coil; 54. Yoke; 55. Armature; 551. Buckle; 56. Tension spring; 57. First snap-fit ​​protrusion; 58. Second snap-fit ​​protrusion; 59. Second slot; 6. Transmission module; 61. Transmission back plate; 62. Main linkage arm; 621. Main pressing protrusion; 622. Receiving groove; 623. Contact spring; 63. Auxiliary linkage arm; 631. Auxiliary pressing protrusion. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0040] This application discloses a pluggable integrated contactor.

[0041] like Figure 1 The pluggable integrated contactor includes a base plate 11, which is a cuboid structure. Several positioning holes 16 are provided on the base plate 11. The positioning holes 16 are provided with main lead 41, auxiliary lead 42 and coil lead 43. The main lead 41, auxiliary lead 42 and coil lead 43 are sealed. An arc extinguishing cover 15 is provided on the base. The main lead 41, auxiliary lead 42 and coil lead 43 pass through the base plate 11 and extend out from the arc extinguishing cover 15. The arc extinguishing cover 15 is a cuboid cover structure adapted to the base plate 11. The arc extinguishing cover 15 and the base plate 11 are potted with epoxy resin, and the protection level reaches IP65. It is suitable for sand and dust and water spray environments, and can withstand the working temperature of -45℃ to +80℃, 96h salt spray and 4500m low pressure environment.

[0042] like Figure 2 , Figure 3 and Figure 4A support frame 13 is fixedly mounted on the base plate 11. The support frame 13 is integrally formed with the base plate 11. A coil support 51 is mounted above the support frame 13. The side of the coil support 51 facing the support frame 13 has four support columns 511, with each pair of support columns 511 forming a group. The distance between the two support columns 511 in the same group is adapted to the support frame 13. The support frame 13 is sandwiched between the support columns 511. An iron core 52 and a coil 53 are mounted on the coil support 51. The coil 53 is a vacuum impregnated coil 53, compatible with 48 / 110 / 125 / 220VAC / DC coil 53 voltage. The iron core 52 is a DT4E coil. This is a pure iron motor, covering motor control scenarios with voltage levels of 110kV and below. A yoke 54 is set on the coil support 51 near the coil 53. The yoke 54 is fixedly connected to the coil support 51 and is located on one side of the coil 53. An armature 55 is set on the coil support 51 near the iron core 52 and is located above the iron core 52. One end of the armature 55 is in contact with one end of the yoke 54, forming a snap-fit ​​magnetic circuit system. It adopts PWM control to match the optimized magnetic circuit design, achieving high power consumption start-up and low power consumption hold, compatible with wide voltage input and low voltage hold, while the action time is ≤63ms and the release time is ≤20ms. A first locking protrusion 57 is provided on the coil support 51, which is located on the side of the coil support 51 near the yoke 54. A second locking protrusion 58 is also provided between the coils 53, which is located on the side of the armature 55 near the yoke 54. A second locking groove 59 is opened at the end of the first locking protrusion 57 away from the coil support 51, and a second locking groove 59 is also opened at the end of the second locking protrusion 58 away from the yoke 54. A tension spring 56 is provided between the first locking protrusion 57 and the second locking protrusion 58. One end of the tension spring 56 is located in the second locking groove 59 of the first locking protrusion 57, and the other end of the tension spring 56 is located in the second locking groove 59 of the second locking protrusion 58. The tension spring 56 can meet the requirements of application under a 20g vibration environment. Two coil pins 512 are provided on the coil bracket 51. The coil pins 512 are located on the same side of the coil bracket 51 near the yoke 54. The two coil pins 512 are located on opposite sides of the yoke 54. Two coil leads 14 are provided on the base plate 11. The coil leads 14 are located on the side of the base plate 11 near the coil pins 512. The coil pins 512 and the coil leads 14 correspond one-to-one and are electrically connected. The coil leads 14 are connected to the coil leads 43. A buckle 551 is provided at the end of the armature 55 away from the tension spring 56. A transmission module 6 is provided at the end of the armature 55 away from the tension spring 56. The transmission module 6 includes a transmission back plate 61. The buckle 551 is fastened to the transmission back plate 61 and connected to the transmission back plate 61.

[0043] like Figure 4 and Figure 5 The base plate 11 is provided with a main contact module 2 and an auxiliary contact module 3. The main contact module 2 and the auxiliary contact module 3 are located on both sides of the support frame 13. The transmission module 6 is located above the main contact module 2 and the auxiliary contact module 3. The transmission back plate 61 is located on the upper side of the main contact module 2 and the auxiliary contact module 3. The transmission back plate 61 is fixedly provided with a main linkage arm 62 and an auxiliary linkage arm 63. The main linkage arm 62 and the auxiliary linkage arm 63 are integrally formed with the transmission back plate 61. The main linkage arm 62 is located above the main contact module 2, and the auxiliary linkage arm 63 is located above the auxiliary contact module 3. The main linkage arm 62 is provided with three main pressing protrusions 621. The three main pressing protrusions 621 are integrally formed with the main linkage arm 62. The three main pressing protrusions 621 are equidistant from each other. The main pressing protrusions 621 are provided with receiving grooves 622. The length direction of the receiving grooves 622 is the same as the length direction of the main pressing protrusions 621. The main contact module 2 includes three contact bridges 23, each corresponding to a main pressing protrusion 621. The contact bridges 23 are located within a receiving groove 622, with their length direction perpendicular to the length direction of the receiving groove 622. The middle of each contact bridge 23 is located within the receiving groove 622, while both ends extend out of the receiving groove 622. Two first slots 231 are formed on each contact bridge 23, located on opposite sides of its length, and engage with the main linkage arm 62. The receiving groove 622 is equipped with a contact spring 623. The extension and retraction direction of the contact spring 623 is the same as the length direction of the receiving groove 622. When the contact spring 623 is in the compressed state, the contact spring 623 abuts against the contact bridge 23 and the top wall of the receiving groove 622. There is a cylindrical protrusion on the top arm of the receiving groove 622. There is also a cylindrical protrusion on the side of the contact bridge 23 facing the contact spring 623. One end of the contact spring 623 is located on the cylindrical protrusion on the top arm of the receiving groove 622, and the other end of the contact spring 623 is located on the cylindrical protrusion on the contact bridge 23. The auxiliary linkage arm 63 is provided with six auxiliary pressing protrusions 631. The six auxiliary pressing protrusions 631 are integrally formed with the auxiliary linkage arm 63 and are equidistant from each other.

[0044] like Figure 4 , Figure 5 and Figure 6The main contact module 2 also includes three sets of main contact stationary springs 21, each set of main contact stationary springs 21 has two springs, each set of main contact stationary springs 21 is correspondingly set with a contact bridge 23, the side of the main contact stationary springs 21 facing the contact bridge 23 is provided with main contacts 22, and the side of the contact bridge 23 facing the main contact stationary springs 21 is provided with two main contacts 22. The main contacts 22 on each set of main contact stationary springs 21 are opposite to the main contacts 22 on the corresponding contact bridge 23. The main contact stationary springs 21 are connected to the main lead-out pin 41. The auxiliary contact module 3 also includes four first auxiliary moving springs 31 and four auxiliary normally closed stationary springs 32. The first auxiliary moving springs 31 and the auxiliary normally closed stationary springs 32 are arranged in a one-to-one correspondence. The end of the first auxiliary moving spring 31 near the auxiliary normally closed stationary spring 32 is located below the auxiliary normally closed stationary spring 32. A normally closed contact 33 is provided on the side of the first auxiliary moving spring 31 facing the auxiliary normally closed stationary spring 32. A normally closed contact 33 is also provided on the side of the auxiliary normally closed stationary spring 32 facing the first auxiliary moving spring 31. The normally closed contact 33 on the first auxiliary moving spring 31 and the normally closed contact 33 on the auxiliary normally closed stationary spring 32 have the same structure and can be used interchangeably. The normally closed contact 33 on the first auxiliary moving spring 31 and the normally closed contact 33 on the auxiliary normally closed stationary spring 32 are arranged opposite to each other. When the coil 53 is not energized, the normally closed contact 33 on the first auxiliary moving spring 31 and the normally closed contact 33 on the auxiliary normally closed stationary spring 32 are in contact. The auxiliary contact module 3 also includes two second auxiliary moving springs 34 and two auxiliary normally open stationary springs 35. The second auxiliary moving springs 34 and the auxiliary normally open stationary springs 35 are arranged in a one-to-one correspondence. The end of the second auxiliary moving spring 34 near the auxiliary normally open stationary spring 35 is located above the auxiliary normally open stationary spring 35. A normally open contact 36 is provided on the side of the second auxiliary moving spring 34 facing the auxiliary normally open stationary spring 35. A normally open contact 36 is also provided on the side of the auxiliary normally open stationary spring 35 facing the second auxiliary moving spring 34. The normally open contact 36 on the second auxiliary moving spring 34 and the normally open contact 36 on the auxiliary normally open stationary spring 35 have the same structure and can be used interchangeably. The normally open contact 36 on the second auxiliary moving spring 34 and the normally open contact 36 on the auxiliary normally open stationary spring 35 are arranged opposite to each other. When the coil 53 is not energized, the normally open contact 36 on the second auxiliary moving spring 34 and the normally open contact 36 on the auxiliary normally open stationary spring 35 are in contact. An auxiliary contact 37 is provided between the first auxiliary moving spring 31 and the auxiliary lead-out foot 42; an auxiliary contact 37 is also provided between the second auxiliary moving spring 34 and the auxiliary lead-out foot 42. The auxiliary contact 37 has a linear structure. One end of the auxiliary contact 37 on the first auxiliary moving spring 31 is fixedly connected to the first auxiliary moving spring 31, one end of the auxiliary contact 37 on the second auxiliary moving spring 34 is fixedly connected to the second auxiliary moving spring 34, and the other end of the auxiliary contact 37 is connected to the auxiliary lead-out foot 42. The sum of the first auxiliary moving spring 31 and the second auxiliary moving spring 34 is the same as the number of auxiliary pressing protrusions 631. The first auxiliary moving spring 31 has an L-shaped structure. The first auxiliary moving spring 31 and the second auxiliary moving spring 34 have the same structure. The spacing between the four first auxiliary moving springs 31 and the two second auxiliary moving springs 34 is equal. The four first auxiliary moving springs 31 are arranged adjacent to each other, and the two second auxiliary moving springs 34 are arranged adjacent to each other. The auxiliary normally closed stationary spring 32 has an L-shaped structure, and the normally closed contact 33 is located on the shorter end of the auxiliary normally closed stationary spring 32. The auxiliary normally open stationary spring 35 has an L-shaped structure, and the normally open contact 36 is located on the auxiliary normally open stationary spring 35 near the second auxiliary moving spring 34. On the end, four arc-extinguishing grids 12 are provided on the base plate 11. The arc-extinguishing grids 12 are made of PPS (polyphenylene sulfide). The main contact stationary spring 21 is located between two adjacent arc-extinguishing grids 12. The gap of the main contacts 22 is optimized according to the voltage level (4.0mm for 110kV level, 1.6mm for 40.5kV level). The magnetic field strength at the center of the contact is ≥21mT, which elongates the arc and accelerates its extinction. The main contacts 22 have a square structure, while the auxiliary normally open contacts 36 and auxiliary normally closed contacts 33 are both circular structures. The main contacts 22, auxiliary normally open contacts 36, and auxiliary normally closed contacts 33 are all made of silver tin oxide (AgSnO2) or nickel-plated anti-rust contacts to improve the resistance to arc corrosion, in accordance with GB / T The 14048.1 standard optimizes the air gap, with a specific contact-to-coil distance of ≥6.5mm and a creepage distance of ≥10mm, making it suitable for low-pressure environments up to 4500m and with a power frequency withstand voltage of up to 4000VAC.

[0045] like Figure 7 The main lead 41, auxiliary lead 42 and coil lead 43 have the same structure. The main lead 41 is larger than the auxiliary lead 42 and coil lead 43. The auxiliary lead 42 and coil lead 43 are the same size. Taking the main lead 41 as an example, a clamping piece 411 is provided at the end of the main lead 41 near the main contact stationary spring 21. The main contact stationary spring 21 is clamped between the clamping pieces 411. An arc protrusion 412 is provided on the main lead 41. The arc protrusion 412 abuts against the base plate 11. An elastic support foot 413 is provided on the main lead 41. The elastic support foot 413 is supported on the side of the base plate 11 away from the arc extinguishing cover 15. The arc protrusion 412 is located between the clamping piece 411 and the elastic support foot 413.

[0046] like Figure 8The circuit diagram shows the connection circuits of two controllers. Specifically, since KM1 at 13-14 is in the open state (corresponding to normally open contact 36), the current of control power supply 1 cannot pass through, and coil 53 is in the de-energized state. By controlling the "closed" position, the current passes through KM2 at 51-52 (corresponding to normally closed contact 33), KM1 at A1-A2 (corresponding to coil 53), and KM1 and KM2 at 21-22 (corresponding to normally closed contact 33), causing coil 53 to be energized and generating a magnetic force to attract armature 55. Armature 55 moves downward and approaches iron core 52, while buckle 551 presses the transmission back plate 61. The transmission back plate 61 drives the main linkage arm 62 and auxiliary linkage arm 63 to press simultaneously, causing the main contact 22 to close, the normally closed contact 33 to open, and the normally open contact 36 to close. At this time, KM1 at 13-14 is closed (corresponding to normally closed contact 36). Normally open contact 36 should be closed. Since KM1 at 21-22 is open (corresponding to normally closed contact 33 being open), and KM1 at 19-20 is closed (corresponding to normally open contact 36 being closed), the current flows through KM2 at 51-52 (corresponding to normally closed contact 33), KM1 at A1-A2 (corresponding to coil 53), and KM1 at 19-20, connecting the circuit. At this time, KM1 at 5-6, KM1 at 1-2, and KM1 at 3-4 at the motor power supply are all closed (corresponding to the three main contacts 22 being closed). At this time, the current at "motor power supply +" flows through KM1 at 5-6, KM1 at 1-2, KM1 at 14-15, and KM1 at 3-4 to "motor power supply -", ultimately realizing the forward rotation of the motor. At this time, the synchronous action of the transmission module 6 makes the motor only able to rotate forward and unable to rotate in reverse. Similarly, when the motor needs to be reversed, since KM2 at 13-14 is in the open state (corresponding to normally open contact 36), the current from the control power supply cannot pass through, and coil 53 is in the de-energized state. By controlling the "disconnect" position, current is allowed to pass through KM1 at 51-52 (corresponding to normally closed contact 33), KM2 at A1-A2 (corresponding to coil 53), and KM1 and KM2 at 21-22 (corresponding to normally closed contact 33), so that coil 53 is energized and works. At this time, KM2 at 13-14 is closed (corresponding to normally open contact 36 being closed), and KM2 at 21-22 is open (corresponding to normally closed contact 33 being open). The KM2 at positions 19-20 is closed (corresponding to the normally open contact 36 being closed). Because the KM2 at positions 21-22 is open, current cannot pass through. However, the KM2 at positions 19-20 is closed, allowing current to pass through the KM2 at positions 19-20 and maintaining this state. In this state, the KM2 at positions 5-6, 1-2, and 3-4 are all closed (corresponding to the three main contacts 22 being closed). The current at "motor power supply +" passes through the KM2 at positions 5-6, 1-2, 15-14, and 3-4 to "motor power supply -", ultimately achieving the reverse rotation of the motor and preventing forward rotation.

[0047] In other embodiments, the arc extinguishing cover 15 and the base plate 11 can be other matching shapes and structures. Two, six or other numbers of support columns 511 can be provided on the coil support 51. Two, three or other numbers of tension springs 56 can be provided between the first snap-fit ​​protrusion 57 and the second snap-fit ​​protrusion 58. The coil pin 512 on the coil support 51 can be directly electrically connected to the coil lead 43. The first auxiliary moving spring 31 and the second auxiliary moving spring 34 can be integrally formed with the auxiliary contact 37. The main contact 22, the auxiliary normally open contact 36 and the auxiliary normally closed contact 33 can all adopt a cylindrical structure or all adopt a circular structure.

[0048] The implementation principle of this application embodiment is as follows: When energized, the iron core 52 on the coil support 51 generates a magnetic force to attract the armature 55. The armature 55 overcomes the tension of the tension spring 56 and presses the transmission module 6, forming a snap-fit ​​magnetic circuit structure. After the transmission module 6 is pressed, it simultaneously drives the main contact module 2 and the auxiliary contact module 3 to operate, ensuring precise and consistent on / off timing, and ensuring strict synchronization of the H-bridge on / off and interlock switching timing. Structurally, it avoids control failures, short-circuit risks, or interlock failures caused by asynchrony. The main contact module 2 can directly realize the forward and reverse drive power supply of the H-bridge, and the auxiliary contact module 3 realizes the interlock between contactors. The separation of the main contact module 2 and the auxiliary contact module 3 effectively improves anti-interference capability and electrical safety; by changing the coil... The 53 parameters are adjusted to adapt to different coil voltage levels, satisfying various structural adaptations and forming a universal structure. The yoke 54 encloses the magnetic force generated by the coil 53, forming a complete magnetic circuit, which makes full use of magnetic energy and improves working efficiency. In addition, the main contact module 2 outputs through the main lead 41, and the auxiliary contact module 3 outputs through the auxiliary lead 42, forming a pluggable integrated structure. During installation, the main lead 41 and the auxiliary lead 42 are directly inserted into the matching packageable device, or directly connected through the leads to complete the installation. The highly integrated structure provides great convenience for subsequent debugging and maintenance, ensuring stable and reliable operation, avoiding a large amount of complex wiring, greatly reducing potential failure points, and lowering the difficulty of debugging.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pluggable integrated contactor, characterized in that: Includes a base plate (11), on which a main contact module (2) and an auxiliary contact module (3) are provided. The main contact module (2) is connected to a main lead-out pin (41), and the auxiliary contact module (3) is connected to an auxiliary lead-out pin (42). Both the main lead-out pin (41) and the auxiliary lead-out pin (42) pass through the base plate (11). It also includes a coil support (51), on which an iron core (52) and a coil (53) are provided. A yoke (54) is provided on the coil support (51) near the coil (53). An armature (55) is provided on the coil support (51) near the iron core (52). A tension spring (56) is provided between the armature (55) and the coil support (51). A transmission module (6) is provided at the end of the armature (55) away from the tension spring (56). The transmission module (6) can act on the main contact module (2) and the auxiliary contact module (3) at the same time. The main contact module (2) can supply power to the terminal. The auxiliary contact module (3) can form a contactor interlock.

2. The pluggable integrated contactor according to claim 1, characterized in that: The main contact module (2) includes multiple sets of main contact stationary springs (21), each set of main contact stationary springs (21) contains two springs, the main contact stationary springs (21) are connected to the main lead-out pin (41), and the main contact stationary springs (21) are provided with main contacts (22); It also includes a contact bridge (23), which is located on the transmission module (6). The contact bridge (23) is provided with two main contacts (22). The two main contacts (22) on the contact bridge (23) are corresponding to the two main contacts (22) on each set of main contact stationary springs (21). The contact bridge (23) simultaneously bridges the two main contact stationary springs (21) to form two series breaks.

3. The pluggable integrated contactor according to claim 2, characterized in that: The auxiliary contact module (3) includes a plurality of first auxiliary moving springs (31) and a plurality of auxiliary normally closed stationary springs (32). The first auxiliary moving springs (31) and the auxiliary normally closed stationary springs (32) are arranged in a one-to-one correspondence. A normally closed contact (33) is provided on the opposite side of the first auxiliary moving springs (31) and the auxiliary normally closed stationary springs (32). The auxiliary contact module (3) further includes a plurality of second auxiliary moving springs (34) and a plurality of auxiliary normally open stationary springs (35). The second auxiliary moving springs (34) and the auxiliary normally open stationary springs (35) are arranged in a one-to-one correspondence. A normally open contact (36) is provided on the opposite side of the second auxiliary moving springs (34) and the auxiliary normally open stationary springs (35). When the coil (53) is de-energized, the normally closed contact (33) on the first auxiliary moving spring (31) and the normally closed contact (33) on the auxiliary normally closed stationary spring (32) are fitted together, and the normally open contact (36) on the second auxiliary moving spring (34) and the normally open contact (36) on the auxiliary normally open contact (36) are separated; when the coil (53) is energized, the normally closed contact (33) on the first auxiliary moving spring (31) and the normally closed contact (33) on the auxiliary normally closed stationary spring (32) become open, realizing the circuit is disconnected, and the normally open contact (36) on the second auxiliary moving spring (34) and the normally open contact (36) on the auxiliary normally open contact (36) become closed, realizing the circuit is closed; An auxiliary contact (37) is provided between the first auxiliary moving spring (31) and the auxiliary lead-out foot (42), and between the second auxiliary moving spring (34) and the auxiliary lead-out foot (42).

4. The pluggable integrated contactor according to claim 3, characterized in that: The transmission module (6) includes a transmission back plate (61), on which a main linkage arm (62) and an auxiliary linkage arm (63) are connected. The main linkage arm (62) is provided with a plurality of main pressing protrusions (621), and the main pressing protrusions (621) are provided in a one-to-one correspondence with the contact bridge (23). The contact bridge (23) is located on the main pressing protrusions (621). The auxiliary linkage arm (63) is provided with a plurality of auxiliary pressing protrusions (631). The sum of the first auxiliary moving spring (31) and the second auxiliary moving spring (34) is the same as the number of the auxiliary pressing protrusions (631).

5. The pluggable integrated contactor according to claim 4, characterized in that: The contact bridge (23) has a first slot (231) and the main linkage arm (62) has a receiving groove (622). The contact bridge (23) is located in the receiving groove (622). The first slot (231) and the main linkage arm (62) are engaged. The receiving groove (622) has a contact spring (623). When the contact spring (623) is in a compressed state, it abuts against the contact bridge (23) and the groove wall of the receiving groove (622).

6. The pluggable integrated contactor according to claim 2, characterized in that: Multiple arc-extinguishing grids (12) are provided on the base plate (11), and the main contact stationary spring (21) is located between two adjacent arc-extinguishing grids (12).

7. The pluggable integrated contactor according to claim 1, characterized in that: A support frame (13) is provided on the base plate (11), and a support column (511) is provided on the side of the coil bracket (51) facing the base plate (11). The support frame (13) is engaged between the support columns (511). The coil support (51) has a first snap-fit ​​protrusion (57) at one end near the tension spring (56), and the armature (55) has a second snap-fit ​​protrusion (58) at one end near the tension spring (56). Both the first snap-fit ​​protrusion (57) and the second snap-fit ​​protrusion (58) have a second slot (59), and the end of the tension spring (56) is located in the second slot (59).

8. The pluggable integrated contactor according to claim 2, characterized in that: The coil support (51) is provided with a coil pin (512), and the base plate (11) is provided with a coil lead-out end (14). The coil pin (512) and the coil lead-out end (14) are electrically connected, and the coil lead-out end (14) is connected with a coil lead-out foot (43).

9. The pluggable integrated contactor according to claim 8, characterized in that: A clip (411) is provided at one end of the main lead-out pin (41) near the main contact stationary spring (21), the clip (411) clamps the main contact stationary spring (21), an arc protrusion (412) is provided on the main lead-out pin (41), the arc protrusion (412) abuts against the base plate (11), an elastic support (413) is provided on the main lead-out pin (41), the elastic support (413) is supported on the base plate (11), and the auxiliary lead-out pin (42) and the coil lead-out pin (43) have the same structure as the main lead-out pin (41).

10. The pluggable integrated contactor according to claim 1, characterized in that: An arc-extinguishing cover (15) is provided on the base plate (11).

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