Modular combined multi-position disconnector

Abstract

The application discloses a modular combined multi-position isolating switch, wherein an operating handle is fixed to one end of a main rotating shaft through a handle rod, a movable contact cam is installed on a shaft body of the main rotating shaft, a locking pin respectively locks the operating handle in different rotating positions, a control handle ball can release the locking of the operating handle by the locking pin, a contact group is installed in a switch frame, and the movable contact cam can drive the contact group in a corresponding position to adjust a contact state of the contact group during rotation, a preset contact group corresponds to an angle of the movable contact cam relative to the main rotating shaft, and a combination of the contact state of the contact group under the driving of the movable contact cam meets a preset switch state of a current rotating position. Through the technical scheme of the application, circuit switching of multiple rotating position states is realized, the volume of the isolating switch is greatly reduced, complicated structure systems are modularized and integrated, and the operability and maintainability of the isolating switch are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of disconnector technology, and in particular to a modular, multi-position disconnector. Background Technology

[0002] Currently, the control element in the disconnecting switch system is the control contact opening and closing. Under control or interference conditions, the rail vehicle can meet different power supply requirements in the normal position, workshop power supply position and connection position. Existing disconnecting switches have complex structures and many types. They are generally customized designs without unified structural design requirements. There are few common parts, which increases the design difficulty, manufacturing cost and maintenance cost. They cannot meet the requirements of rapid response to customer solutions and energy conservation and environmental protection. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a modular, multi-position disconnecting switch. Through the modular arrangement of contact groups, the circuit, current parameters, and functional requirements for each contact group to achieve independent on / off switching are combined. The on / off control of each contact group is achieved via a moving contact cam on the main rotating shaft, which is connected to the operating handle. This allows for circuit switching across multiple rotational positions, solving the modular design requirements of rail locomotive disconnecting switches while meeting various control state needs. This significantly reduces the size of the disconnecting switch and modularizes and integrates the complex structural system. During use and maintenance, only different modules need to be operated and replaced, without needing to consider the specific internal structure of the modules, greatly improving the operability and maintainability of the disconnecting switch.

[0004] To achieve the above objectives, the present invention provides a modular combined multi-position disconnect switch, comprising: a switch frame, a switching assembly, a transmission assembly, and a contact assembly;

[0005] The switching assembly includes an operating handle, a handle ball, and a locking pin. The transmission assembly includes a handle rod, a main rotating shaft, and a moving contact cam. The operating handle is mounted on the handle rod, and the handle rod is fixed to one end of the main rotating shaft. The moving contact cam is mounted on the shaft of the main rotating shaft. Driving the operating handle can drive the moving contact cam to rotate synchronously.

[0006] The locking pins lock the operating handle to different rotation positions respectively. The handle ball is connected to the locking pin. By operating the handle ball, the locking pin can be released from locking the operating handle.

[0007] A preset number of contact groups are installed in the switch frame, and the moving contact cam can move the moving contact bearing of the corresponding contact group during rotation to adjust the contact state of the contact group;

[0008] The angle of the moving contact cam corresponding to the contact group relative to the main rotating shaft is preset so that when the operating handle is in different rotation positions, the combination of contact states of the contact group under the action of the moving contact cam conforms to the preset switching state of the current rotation position.

[0009] In the above technical solution, preferably, the contact group includes a moving contact, a moving contact plate, a stationary contact, a stationary contact plate, a toggle spring, and a merging spring;

[0010] The fixed end of the moving contact plate is rotatably connected to the stationary contact plate via a cylindrical pin. One end of the actuating spring is connected to the moving contact plate, and the other end is connected to the stationary contact plate.

[0011] The stationary contact is fixed to the stationary contact plate by a stationary contact pad, and the merging spring is fixed relative to the stationary contact plate by a spring seat. The moving contact is fixed to the merging spring, and the movable end of the moving contact plate abuts against the moving contact. In the initial state, the moving contact is able to merge and contact the stationary contact under the elastic force of the merging spring.

[0012] The moving contact plate, under the action of the external force of the moving contact cam, can overcome the elastic force of the actuating spring and rotate around the cylindrical pin, so that the moving contact plate can push the moving contact to overcome the elastic force of the merging spring and separate from the stationary contact, thereby releasing the merging contact state between the moving contact and the stationary contact.

[0013] In the above technical solution, preferably, a bearing is provided at the contact point between the moving contact plate and the moving contact cam, so that the moving contact cam contacts the bearing during the process of moving the moving contact plate, and the relative rotational movement between the moving contact cam and the moving contact plate is realized by the rotation of the bearing.

[0014] In the above technical solution, preferably, stationary contacts are provided at both ends of the moving contact, and connecting holes are provided on the stationary contacts at both ends. According to the preset switch state to be achieved, the same end stationary contacts of different groups of contacts are connected in different parallel ways through the connecting holes, so that different switch states are achieved by combining the contact states of the contact groups when the operating handle is in different rotation positions.

[0015] In the above technical solution, preferably, the switch frame includes a front panel bracket, a rear panel bracket, a support plate and a support shaft. The front panel bracket and the rear panel bracket are fixed together by the support plate and the support shaft. The contact group is fixed on the support plate. The main rotating shaft passes through the area between the front panel bracket and the rear panel bracket. The handle lever is connected to one end of the main rotating shaft outside the front panel bracket through a handle cam.

[0016] The locking pin is movably inserted into the pin seat, which is fixed to the front panel bracket. A return spring is provided between the locking pin and the pin seat. Under the elastic force of the return spring, the locking pin can be inserted into different grooves of the handle cam to lock the operating handle at different rotation positions. When the handle ball is subjected to external force, it overcomes the elastic force of the return spring and disengages from the groove to release the locking pin from locking the operating handle.

[0017] In the above technical solution, preferably, a first padlock bracket is fixed on the front panel bracket, and a second padlock bracket is provided on the handle rod, with matching lock holes provided on the first padlock bracket and the second padlock bracket;

[0018] When the handle is rotated to the point where the locking holes on the first padlock bracket and the second padlock bracket correspond, the rotation position of the handle is locked by the padlock.

[0019] The first padlock bracket is fixed to the front panel bracket at a preset position and preset angle, so that the operating handle is in a preset rotation position when the first padlock bracket and the second padlock bracket are locked.

[0020] In the above technical solution, preferably, the modular combination multi-position disconnect switch further includes a micro switch and a micro switch cam. The micro switch is fixed on the rear panel bracket, and the micro switch cam is fixed on the main rotating shaft near the outer side of the rear panel bracket. The micro switch cam rotates synchronously with the main rotating shaft and can trigger different switching states of the micro switch when the operating handle is in different rotation positions.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: through the modular design of the contact group arrangement, the circuit, current parameters and functional requirements of each contact group are combined to achieve the on / off state. The on / off control of each contact group is achieved by the moving contact cam on the main rotating shaft connected to the operating handle, realizing the circuit switching of multiple rotation position states. This solves the modular design requirements of the rail locomotive disconnect switch, while meeting the needs of multiple control states, greatly reducing the size of the disconnect switch, and modularizing and integrating the complex structural system. During use and maintenance, only different modules need to be operated and replaced, without having to consider the specific internal structure of the modules, which greatly improves the operability and maintainability of the disconnect switch. Attached Figure Description

[0022] Figure 1 Here are three structural views of a modular combined multi-position disconnector disclosed in one embodiment of the present invention;

[0023] Figure 2This is a right view of a modular combined multi-position disconnector disclosed in an embodiment of the present invention;

[0024] Figure 3 Here are three structural views of a contact assembly disclosed in one embodiment of the present invention;

[0025] Figure 4 for Figure 3 A sectional view of the contact assembly in the embodiment shown from direction AA;

[0026] Figure 5 This is an electrical schematic diagram of a disconnecting switch disclosed in one embodiment of the present invention.

[0027] In the diagram, the correspondence between the components and the reference numerals is as follows:

[0028] 1. Front panel bracket; 2. Rear panel bracket; 3. Support shaft; 4. Support plate; 5. Contact assembly; 6. Operating handle; 7. Second padlock bracket; 8. Handle lever; 9. Handle cam; 10. Moving contact cam; 11. Micro switch cam; 12. Micro switch; 13. Handle ball; 14. Locking pin; 15. Return spring; 16. Pin seat; 17. First padlock bracket; 18. Main shaft; 21. Moving contact; 22. Moving contact plate; 23. Stationary contact; 24. Stationary contact plate; 25. Toggle spring; 26. Combining spring; 27. Cylindrical pin; 28. Bearing; 29. ​​Connecting hole; 30. Stationary contact pad; 31. Spring seat; 32. Mounting hole. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] The present invention will now be described in further detail with reference to the accompanying drawings:

[0031] like Figure 1 and Figure 2 As shown, a modular combined multi-position disconnect switch according to the present invention includes: a switch frame, a switching assembly, a transmission assembly, and a contact group 5;

[0032] The switching assembly includes an operating handle 6, a handle ball 13, and a locking pin 14. The transmission assembly includes a handle rod 8, a main rotating shaft 18, and a moving contact cam 10. The operating handle 6 is mounted on the handle rod 8, and the handle rod 8 is fixed to one end of the main rotating shaft 18. The moving contact cam 10 is mounted on the shaft of the main rotating shaft 18. Driving the operating handle 6 can drive the moving contact cam 10 to rotate synchronously.

[0033] The locking pin 14 locks the operating handle 6 to different rotation positions. The handle ball 13 is connected to the locking pin 14. By operating the handle ball 13, the locking pin 14 can be released from locking the operating handle 6.

[0034] A preset number of contact groups 5 are installed in the switch frame, and the moving contact cam 10 can move the moving contact bearing 28 of the corresponding contact group 5 during rotation to adjust the contact state of the contact group 5.

[0035] The angle of the moving contact cam 10 corresponding to the preset contact group 5 relative to the main rotating shaft 18 ensures that when the operating handle 6 is in different rotation positions, the combination of contact states of the contact group 5 under the action of the moving contact cam 10 conforms to the preset switch state of the current rotation position.

[0036] In this embodiment, the modular design of the contact group 5 allows each contact group 5 to independently achieve the circuit switching, current parameters, and functional requirements. The moving contact cam 10 on the main rotating shaft 18, which is connected to the operating handle 6, controls the switching of each contact group 5, enabling circuit switching between multiple rotational positions. This solves the modular design requirements of the rail locomotive disconnect switch while meeting various control state requirements, greatly reducing the size of the disconnect switch. It also modularizes and integrates the complex structural system, requiring only the operation and replacement of different modules during use and maintenance, without needing to consider the specific internal structure of the modules, thus greatly improving the operability and maintainability of the disconnect switch.

[0037] Specifically, during operation, the operating handle 6 is held in a rotating position by the locking pin 14, preventing the operating handle 6 from rotating or shaking. If the protruding part of the moving contact cam 10 on the main rotating shaft 18 faces the corresponding moving contact 21 at the current rotating position, then the moving contact 21 will be actuated by the moving contact cam 10. If the protruding part of the moving contact cam 10 is not facing the corresponding moving contact 21 at the current rotating position, then the moving contact 21 will not be actuated by the moving contact cam 10.

[0038] By setting the angle of the protruding part of the different moving contact cams 10 on the main rotating shaft 18 relative to the main rotating shaft 18, the moving contact cams 10 of different contact groups 5 are turned differently, and the contact states of different contact groups 5 are different. Therefore, when the operating handle 6 is rotated to different rotation positions, the combination of contact states of these contact groups 5 is different, realizing different switching states of the disconnecting switch, and thus realizing different functions.

[0039] like Figure 3 and Figure 4 As shown, in the above embodiment, preferably, the contact group 5 includes a moving contact 21, a moving contact plate 22, a stationary contact 23, a stationary contact plate 24, a toggle spring 25, and a merging spring 26.

[0040] The fixed end of the moving contact plate 22 is rotatably connected to the stationary contact plate 24 via a cylindrical pin 27. One end of the actuating spring 25 is connected to the moving contact plate 22, and the other end is connected to the stationary contact plate 24.

[0041] The stationary contact 23 is fixed to the stationary contact plate 24 by the stationary contact pad 30. The merging spring 26 is fixed relative to the stationary contact plate 24 by the spring seat 31. The moving contact 21 is fixed to the merging spring 26. The movable end of the moving contact plate 22 abuts against the moving contact 21. In the initial state, the moving contact 21 is able to merge and contact with the stationary contact 23 under the elastic force of the merging spring 26.

[0042] Under the external force of the moving contact cam 10, the moving contact plate 22 can overcome the elastic force of the actuating spring 25 and rotate around the cylindrical pin 27, so that the moving contact plate 22 can push the moving contact 21 to overcome the elastic force of the merging spring 26 and separate from the stationary contact 23, thereby releasing the merging contact state between the moving contact 21 and the stationary contact 23.

[0043] Specifically, the moving contact plate 22 can rotate relative to the stationary contact plate 24 through the hinge of the cylindrical pin 27. When the actuating spring 25 and the merging spring 26 are in their initial state, the moving contact plate 22 abuts against the moving contact 21, and the moving contact 21 is in contact with the stationary contact 23. When the moving contact plate 22 is actuated by an external force and rotates around the cylindrical pin 27 against the elastic force of the actuating spring 25, it pushes the moving contact 21 against the elastic force of the merging spring 26 and causes the moving contact 21 to begin moving in the direction of contraction of the merging spring 26, thereby separating the moving contact 21 from the stationary contact 23 and changing the switching state.

[0044] After the external force on the moving contact plate 22 is released, the actuating spring 25 returns to its initial state under the action of elastic force, and at the same time drives the moving contact plate 22 back to its original position. The moving contact 21 is no longer pushed by the moving contact plate 22, and the merging spring 26 returns to its initial state under the action of elastic force, and at the same time drives the moving contact 21 back to its original position, so that the moving contact 21 and the stationary contact 23 re-contact, changing the switching state.

[0045] In the above embodiment, preferably, stationary contacts 23 are respectively provided at both ends of the moving contact 21, and connection holes 29 are provided on the stationary contacts 23 at both ends. According to the preset switch state to be achieved, the same end stationary contacts 23 of different groups of contact groups 5 are connected in different parallel ways through the connection holes 29, so that the combination of contact states of contact group 5 when the operating handle 6 is in different rotation positions can achieve different switch states.

[0046] Specifically, each contact group 5 has two stationary contacts 23, i.e., two connection points. By connecting the connection points at the same end of multiple contact groups 5 in different parallel ways, the isolating switch formed by multiple contact groups 5 can achieve different switching operation methods. The specific parallel connection method needs to be designed according to the function to be achieved. The design method is not within the protection scope of this invention and will not be elaborated here.

[0047] In the above embodiment, preferably, a bearing 28 is provided on the moving contact plate 22 at the contact point with the moving contact cam 10, so that the moving contact cam 10 contacts the bearing 28 during the process of moving the moving contact plate 22, and the relative rotational movement between the moving contact cam 10 and the moving contact plate 22 is realized by the rotation of the bearing 28. By providing the bearing 28, the sliding friction between the moving contact cam 10 and the moving contact plate 22 is changed to rolling friction, reducing wear, increasing service life, and improving the stability and reliability of the disconnecting switch operation process.

[0048] In the above embodiment, preferably, the switch frame includes a front panel bracket 1, a rear panel bracket 2, a support plate 4 and a support shaft 3. The front panel bracket 1 and the rear panel bracket 2 are fixed together by the support plate 4 and the support shaft 3. The contact group 5 is fixed to the support plate 4 through the mounting hole 32. The main rotating shaft 18 passes through the area between the front panel bracket 1 and the rear panel bracket 2. The handle rod 8 is connected to one end of the main rotating shaft 18 outside the front panel bracket 1 through the handle cam 9.

[0049] The locking pin 14 is movably mounted on the pin seat 16, which is fixed to the front panel bracket 1. A return spring 15 is provided between the locking pin 14 and the pin seat 16. Under the elastic force of the return spring 15, the locking pin 14 can be inserted into different grooves of the handle cam 9 to lock the operating handle 6 at different rotation positions. Under the action of external force, the handle ball 13 overcomes the elastic force of the return spring 15 and disengages from the groove to release the locking pin 14 from locking the operating handle 6.

[0050] Specifically, the modular contact group 5 is integrated between the front panel bracket 1 and the rear panel bracket 2. The moving contact plate 22 is downwardly aligned with the moving contact cam 10 mounted on the main rotating shaft 18. During the rotation of the operating handle 6, when the protruding part of the moving contact cam 10 rotates to the position facing upward and corresponding to the moving contact plate 22, the moving contact plate 22 is moved, and the moving contact 21 of the current contact group 5 is separated from the stationary contact 23. When the protruding part of the moving contact cam 10 rotates to other positions, the moving contact 21 contacts the stationary contact 23.

[0051] Different switch positions are pre-set on the front panel bracket 1. When the operating handle 6 is in the rotation position corresponding to the switch position, a fixed angle is set between the moving contact cam 10 and the main rotating shaft 18, so that each set of moving contact cams 10 can control the switch state of the corresponding contact group 5 according to the currently set switch state. When the operating handle 6 is rotated to another switch position, each set of moving contact cams 10 can also control the switch state of the corresponding contact group 5 according to the other switch state.

[0052] During this setting process, the switching state of the disconnecting switch is customized by setting different switch state positions on the front panel bracket 1, setting the number of contact groups 5 and moving contact cams 10, setting the fixed angle of the moving contact cam 10 relative to the main rotating shaft 18, setting the shape of the protruding part of the moving contact cam 10, and setting the parallel connection method between different contact groups 5.

[0053] In the above embodiment, preferably, a first padlock bracket 17 is also fixed on the front panel bracket 1, and a second padlock bracket 7 is provided on the handle rod 8. The first padlock bracket 17 and the second padlock bracket 7 are provided with matching lock holes.

[0054] When the handle lever 8 is rotated to the point where the first padlock bracket 17 aligns with the locking hole on the second padlock bracket 7, the rotation position of the handle lever 8 is locked by the padlock.

[0055] The first padlock bracket 17 is fixed to the front panel bracket 1 at a preset position and preset angle, so that the operating handle 6 is in a preset rotation position when the first padlock bracket 17 and the second padlock bracket 7 are locked.

[0056] The relative locking of the padlock bracket further enhances the locking of the operating handle 6 position, preventing external interference from disrupting the operating handle 6.

[0057] In the above embodiments, preferably, the modular combination multi-position disconnect switch also includes a micro switch 12 and a micro switch cam 11. The micro switch 12 is fixed on the rear panel bracket 2, and the micro switch cam 11 is fixed on the main rotating shaft 18 at one end near the outer side of the rear panel bracket 2. The micro switch cam 11 rotates synchronously with the main rotating shaft 18 and can trigger different switching states of the micro switch 12 when the operating handle 6 is in different rotation positions.

[0058] By setting the micro switch 12, the micro switch 12 can be in a corresponding switching state when the operating handle 6 is in different rotational positions. By directly outputting the switching state command of the micro switch 12, the current switching state of the isolating switch can be determined. That is, the complex combination of contact states of the contact group 5 in the isolating switch is represented by a single switching state of the isolating switch. In this embodiment, the combination of contact states of the contact group 5 and the switching state of the micro switch 12 have a one-to-one correspondence.

[0059] According to the modular multi-position disconnector disclosed in the above embodiments, in specific implementation, the operating handle 6 can be set to three rotation positions: Operation, Workshop, and Earthing. The disconnector is equipped with five sets of contacts: main contacts Q1, main contacts Q2, and auxiliary contacts AS1, AS2, and AS3.

[0060] During operation, the contact groups can be switched on and off by operating handle 6. To operate handle 6, handle ball 13 must be pulled first to unlock handle 6.

[0061] like Figure 5 As shown, when the operating handle 6 is in the "Operation" position, the main contacts Q1.1 and Q1.2 are closed, Q1.1 and Q1.3 are open, and Q2.1 and Q2.3 are open. The auxiliary contacts (AS1, AS2, AS3) 1 and 2 are closed, 3 and 4 are open, 7 and 8 are open, 9 and 10 are closed, 13 and 14 are open, and 15 and 16 are closed.

[0062] When the operating handle 6 is in the "Workshop" position, the main contacts Q1.1 and Q1.3 are closed, Q1.1 and Q1.2 are open, and Q2.1 and Q2.3 are open. The auxiliary contacts (AS1, AS2, AS3) 1 and 2 are open, 3 and 4 are closed, 7 and 8 are closed, 9 and 10 are open, 13 and 14 are open, and 15 and 16 are closed.

[0063] When the operating handle 6 is in the "Earthing" position, the main contacts Q1.1 and Q1.3 are closed, Q1.1 and Q1.2 are open, and Q2.1 and Q2.3 are closed. The auxiliary contacts (AS1, AS2, AS3) 1 and 2 are open, 3 and 4 are closed, 7 and 8 are open, 9 and 10 are closed, 13 and 14 are closed, and 15 and 16 are open.

[0064] The modular, multi-position disconnect switch disclosed in the above embodiments aims to provide safety protection for rail vehicles and workshop personnel during control or interference situations. When closed, this switch reliably connects the connected conductors to the ground, while also featuring small size and modular contact assembly. This disconnect switch addresses the modular design requirements of rail locomotive disconnect switches, while also considering rapid response to customer solutions and energy conservation and environmental protection requirements. This is the result of the product's design based on integrated and modular principles. It can meet various customer needs, uses multiple interchangeable parts, significantly reduces the size of the disconnect switch, and modularizes the complex structural system. During maintenance and use, only the module needs to be replaced or operated, without needing to consider the specific internal structure of the module. This greatly improves the operability and maintainability of the product.

[0065] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A modular, multi-position disconnect switch, characterized in that, include: Switch frame, switching components, transmission components, and contact assembly; The switching assembly includes an operating handle, a handle ball, and a locking pin. The transmission assembly includes a handle rod, a main rotating shaft, and a moving contact cam. The operating handle is mounted on the handle rod, and the handle rod is fixed to one end of the main rotating shaft. The moving contact cam is mounted on the shaft of the main rotating shaft. Driving the operating handle can drive the moving contact cam to rotate synchronously. The locking pins lock the operating handle to different rotation positions respectively. The handle ball is connected to the locking pin. By operating the handle ball, the locking pin can be released from locking the operating handle. A predetermined number of contact groups are installed within the switch frame. During rotation of the moving contact cam, the moving contact bearing of the corresponding contact group can be actuated to adjust the contact state of the contact group. Each contact group includes a moving contact, a moving contact plate, a stationary contact, a stationary contact plate, a toggle spring, and a merging spring. The fixed end of the moving contact plate is rotatably connected to the stationary contact plate via a cylindrical pin. One end of the toggle spring is connected to the moving contact plate, and the other end is connected to the stationary contact plate. The stationary contact is fixed to the stationary contact plate via a stationary contact pad. The merging spring... The moving contact is fixed relative to the stationary contact plate via a spring seat. The moving contact is fixed to the merging spring, and the movable end of the moving contact plate abuts against the moving contact. In the initial state, the moving contact is able to merge with the stationary contact under the elastic force of the merging spring. Under the external force of the moving contact cam, the moving contact plate can overcome the elastic force of the actuating spring and rotate around the cylindrical pin, so that the moving contact plate can push the moving contact to overcome the elastic force of the merging spring and separate from the stationary contact, thereby releasing the merged contact state between the moving contact and the stationary contact. The angle of the moving contact cam corresponding to the contact group relative to the main rotating shaft is preset so that when the operating handle is in different rotation positions, the combination of contact states of the contact group under the action of the moving contact cam conforms to the preset switching state of the current rotation position. The moving contact is provided with stationary contacts at both ends, and the stationary contacts at both ends are provided with connecting holes. According to the preset switching state to be achieved, the same end stationary contacts of different groups of contact groups are connected in different parallel ways through the connecting holes, so that the combination of contact states of the contact group achieves different switching states when the operating handle is in different rotation positions.

2. The modular combined multi-position disconnect switch according to claim 1, characterized in that, A bearing is provided at the contact point between the moving contact plate and the moving contact cam, so that the moving contact cam contacts the bearing during the process of moving the moving contact plate, and the relative rotational movement between the moving contact cam and the moving contact plate is realized by the rotation of the bearing.

3. The modular combined multi-position disconnect switch according to claim 1, characterized in that, The switch frame includes a front panel bracket, a rear panel bracket, a support plate, and a support shaft. The front panel bracket and the rear panel bracket are fixed together by the support plate and the support shaft. The contact assembly is fixed to the support plate. The main rotating shaft passes through the area between the front panel bracket and the rear panel bracket. The handle lever is connected to one end of the main rotating shaft outside the front panel bracket through a handle cam. The locking pin is movably inserted into the pin seat, which is fixed to the front panel bracket. A return spring is provided between the locking pin and the pin seat. Under the elastic force of the return spring, the locking pin can be inserted into different grooves of the handle cam to lock the operating handle at different rotation positions. When the handle ball is subjected to external force, it overcomes the elastic force of the return spring and disengages from the groove to release the locking pin from locking the operating handle.

4. The modular combined multi-position disconnect switch according to claim 3, characterized in that, The front panel bracket is also fixed with a first padlock bracket, and the handle bar is provided with a second padlock bracket. The first padlock bracket and the second padlock bracket are provided with matching lock holes. When the handle is rotated to the point where the locking holes on the first padlock bracket and the second padlock bracket correspond, the rotation position of the handle is locked by the padlock. The first padlock bracket is fixed to the front panel bracket at a preset position and preset angle, so that the operating handle is in a preset rotation position when the first padlock bracket and the second padlock bracket are locked.

5. The modular combined multi-position disconnect switch according to claim 3, characterized in that, It also includes a micro switch and a micro switch cam. The micro switch is fixed on the rear panel bracket, and the micro switch cam is fixed on the main rotating shaft near the outer side of the rear panel bracket. The micro switch cam rotates synchronously with the main rotating shaft and can trigger different switching states of the micro switch when the operating handle is in different rotation positions.

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