DC MCC control cabinet with double power supply false switching prevention mechanism

Abstract

The present application relates to the technical field of control cabinet, disclose a kind of double power supply false switching mechanism's dc MCC control cabinet with preventing, including cabinet, power switch A and power switch B are respectively fixedly connected in cabinet, power switch A and power switch B are all rotatably connected with latch handle, limit hole is all set up on the latch handle, two hollow connecting rods are located in the limit hole of power switch A and power switch B in same side, slidingly connected with support block in the communicating port of hollow connecting rod, support block is close to the side in hollow connecting rod and is all fixedly connected with inclined guide plate, the inner wall of hollow connecting rod is fixedly connected with limit spring close to one end of mounting base, one end of limit spring is fixedly connected with guide seat, guide groove is set up on the guide seat, and the number and position are all corresponding with each guide plate, this double power supply false switching mechanism's dc MCC control cabinet with preventing, avoid the problem that hollow connecting rod movement stroke is consumed and cannot drive latch handle to complete closing action in time due to the wear and tear of connecting portion.

Description

Technical Field

[0001] This invention relates to the field of control cabinet technology, specifically to a DC MCC control cabinet with a dual power supply anti-misoperation switching mechanism. Background Technology

[0002] The DC MCC control cabinet is an integrated control cabinet with multi-functional integrated control capabilities. On the one hand, the control cabinet is connected to the pump body, and a water circulation cooling system is constructed through the pump body. The flowing water path is used to continuously and stably cool the equipment and related components in the data center, ensuring that the equipment in the data center operates in a suitable temperature environment. On the other hand, the control cabinet also has a lighting control function, which can centrally control the lighting system in the cabin or data center to achieve unified management of environmental lighting.

[0003] The control cabinet is equipped with two power switches, which are connected to the main power supply and the backup power supply respectively. When the main power supply fails to supply power normally due to fault, power outage or other abnormal conditions, the staff can turn off the power switch on the faulty side and turn on the switch on the backup power supply side, so that the backup power supply can continue to supply power to the control cabinet. Through this dual power supply switching mechanism, the control cabinet can be effectively guaranteed to maintain stable operation under various power supply abnormalities, and ensure the normal operation of the cooling system and lighting control functions of the cold source container.

[0004] Existing dual-power switches, to improve operational convenience and safety, typically incorporate a dual-switch switching mechanism. The mainstream approach uses a rotating linkage mechanism; after closing one switch, the linkage opens the other, safely switching between main and backup power. However, in actual operation, continuous wear occurs at the connection between the linkage and the switch, creating a gap. This gap consumes part of the linkage's travel, preventing the other switch from closing promptly. This can lead to situations where the main power is disconnected while the backup power fails to connect in time, affecting power continuity. Therefore, we propose a DC MCC control cabinet with a dual-power anti-misoperation switching mechanism. Summary of the Invention

[0005] The purpose of this invention is to provide a DC MCC control cabinet with a dual power supply anti-misoperation switching mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a DC MCC control cabinet with a dual power supply anti-misoperation switching mechanism, comprising a cabinet body, wherein a power switch A and a power switch B are fixedly connected in the cabinet body respectively, and a handle is rotatably connected to both power switch A and power switch B, the opening and closing states of the two handles are opposite, and a limit hole is provided on each handle.

[0007] A fixed frame is fixedly connected inside the cabinet. The fixed frame is located between power switch A and power switch B. A mounting bracket is fixedly connected to the end of the fixed frame away from the cabinet. Turntables are rotatably connected to both sides of the mounting bracket. A mounting sleeve is fixedly connected to the side of the turntable away from the mounting bracket. A connecting rod is slidably connected inside the mounting sleeve. A mounting base is rotatably connected to the end of the connecting rod away from the mounting sleeve. A hollow connecting rod is fixedly connected to the side of the mounting base away from the connecting rod. The two hollow connecting rods are respectively located in the limiting holes of power switch A and power switch B on the same side.

[0008] The hollow connecting rod has several evenly distributed communication openings on its outer wall. A support block is slidably connected to each communication opening of the hollow connecting rod. An inclined guide plate is fixedly connected to the side of each support block near the inside of the hollow connecting rod. A limit spring is fixedly connected to the inner wall of the hollow connecting rod near the mounting base. A guide seat is fixedly connected to one end of the limit spring. The guide seat has guide grooves in number and position corresponding to each guide plate. Each guide plate is fitted into a guide groove, and the guide plate is slidably connected to the inner wall of the guide groove.

[0009] Preferably, each of the two gate handles is fixedly connected to a limiting ring on the side near the mounting bracket, and the limiting ring is aligned with the limiting hole on the same side gate handle along the same axis.

[0010] Preferably, the hollow connecting rod is rotatably connected to an outer cover at the end away from the mounting base. The outer cover has an annular mounting groove on the side near the hollow connecting rod. An annular friction disc is fixedly connected to the opening side of the mounting groove. The friction disc is in contact with the side wall of the gate handle on the same side.

[0011] Preferably, the outer cover is fitted outside the limiting ring through a mounting groove, and a bearing and a torsion spring are fixedly connected between the inner wall of the mounting groove and the outer wall of the limiting ring, respectively.

[0012] Preferably, a positioning sleeve is fixedly connected to the side of the outer cover near the hollow connecting rod. The positioning sleeve passes through the hollow connecting rod and extends into the interior of the hollow connecting rod. A guide opening is provided on the side wall of the positioning sleeve, and several evenly distributed positioning openings are provided on the top of the positioning sleeve. Each positioning opening is connected to the guide opening.

[0013] Preferably, a guide rod is fixedly connected to the side of the guide seat away from the limiting spring, and the end of the guide rod away from the guide seat is located inside the positioning sleeve. A positioning rod is fixedly connected to the guide rod, and the positioning rod is located inside the guide opening. The positioning rod is slidably connected to the inner wall of the guide opening.

[0014] Preferably, a plurality of evenly distributed toothed blocks are fixedly connected to the turntable, and a return spring is fixedly connected between the connecting rod and the inner wall of the mounting sleeve.

[0015] Preferably, a gear is rotatably connected inside the mounting bracket, the gear is located between two turntables, and the gear meshes with the tooth blocks of the two turntables respectively.

[0016] Preferably, a hexagonal sleeve A is fixedly connected to the side of the mounting bracket away from the cabinet, a hexagonal sleeve B is slidably connected inside the hexagonal sleeve A, a mounting rod is fixedly connected to the side of the gear near the hexagonal sleeve A, the end of the mounting rod away from the gear is located inside the hexagonal sleeve B, the mounting rod and the inner wall of the hexagonal sleeve B are slidably connected along the axis, and a knob is fixedly connected to the side of the hexagonal sleeve B away from the mounting bracket.

[0017] Preferably, the cabinet body is rotatably connected to a double-opening cabinet door, and each cabinet door is fixedly connected to a cooling fan.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. This invention sets a limiting spring, a guide seat, and an inclined guide plate inside a hollow connecting rod, and slides a support block on the outer wall of the hollow connecting rod. When wear gaps occur in the inner wall of the limiting hole or the support block due to long-term use, the limiting spring pushes the guide seat to move horizontally. The guide seat converts the axial thrust into radial thrust through the sliding cooperation between the guide groove and the inclined guide plate, pushing the support block to move outward until it is tightly fitted with the inner wall of the limiting hole, automatically eliminating the wear gaps. This effectively avoids the problem that the hollow connecting rod's stroke is consumed due to wear at the connection between the hollow connecting rod and the limiting hole, preventing the hollow connecting rod from timely driving the gate handle to complete the closing action. This significantly improves the long-term operational reliability of the dual power supply switching mechanism.

[0020] 2. This invention uses a friction disc attached to the side wall of the gate handle, and includes an outer cover, a torsion spring, and a positioning sleeve with a positioning port. A guide rod and a positioning rod are fixed to the guide seat. When the gate handle rotates, the outer cover rotates along with it due to friction, causing the positioning sleeve to rotate synchronously. This moves the positioning port on the positioning sleeve to the position of the positioning rod, which then engages with the positioning port, locking the guide rod and guide seat and preventing the limit spring from extending. This avoids erroneous gap compensation due to motion interference during switching. When the gate handle is switched to the correct position, the torque released by the torsion spring is greater than the friction force of the friction disc, causing the outer cover to rotate in the opposite direction and reset. The positioning port disengages from the positioning rod, and the limit spring regains its compensation capability. This ensures that the compensation action only occurs when the switch is stationary, guaranteeing the accuracy and safety of the compensation.

[0021] 3. This invention uses gears that mesh with the toothed blocks of two turntables. The turntables are driven to rotate via mounting sleeves, connecting rods, and hollow connecting rods. The gears synchronously drive the two turntables to rotate in opposite directions, causing the two turntables to operate simultaneously. Furthermore, utilizing the asymmetrical travel characteristics of the turntables of power switches A and B, opening the switch requires only a small angle to cut off power, while closing it requires a large angle to connect power. During the synchronous rotation of the two turntables at the same angle, the opening side cuts off power first, followed by the closing side, achieving a mechanically forced first-to-last-connect sequence. This avoids the short-circuit risk of simultaneous connection of two power sources due to incorrect operation sequence or synchronization deviation in traditional dual-power switching, significantly improving switching safety. Additionally, the use of hexagonal sleeves A and B allows for pushing and pulling operations to limit and release the knob, improving the ease of operation of the device. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the power switch and its connection structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the power switch structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the mounting frame structure of the present invention;

[0026] Figure 5 This is a schematic cross-sectional view of the mounting frame of the present invention;

[0027] Figure 6 This is a schematic diagram of the cross-sectional structure of hexagonal sleeve A and hexagonal sleeve B of the present invention;

[0028] Figure 7 This is a schematic diagram of the cross-sectional structure of the hollow connecting rod of the present invention;

[0029] Figure 8 This is a schematic diagram of the cross-sectional structure of the gate handle of the present invention;

[0030] Figure 9 This is a schematic diagram of the outer casing structure of the present invention;

[0031] Figure 10 For the present invention Figure 8 The diagram shows an enlarged view of area A.

[0032] In the diagram: 1. Cabinet body; 11. Cabinet door; 2. Power switch A; 21. Power switch B; 22. Handle; 23. Limiting hole; 24. Limiting ring; 3. Fixing bracket; 31. Mounting bracket; 32. Gear; 4. Hexagonal sleeve A; 41. Hexagonal sleeve B; 42. Mounting rod; 43. Knob; 5. Turntable; 51. Tooth block; 52. Mounting sleeve; 53. Connecting rod; 54. Return spring; 55. Mounting seat; 6. Hollow connecting rod; 61. Support block; 62. Guide plate; 7. Limiting spring; 71. Guide seat; 72. Guide groove; 73. Guide rod; 74. Positioning rod; 8. Outer cover; 81. Mounting groove; 82. Friction disc; 83. Bearing; 84. Torsion spring; 85. Positioning sleeve; 86. Guide opening; 87. Positioning opening. Detailed Implementation

[0033] 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, and 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.

[0034] Please see Figure 1-10 The present invention provides a technical solution: a DC MCC control cabinet with a dual power supply anti-misoperation switching mechanism, including a cabinet body 1, a double-opening cabinet door 11 rotatably connected to the cabinet body 1, a cooling fan fixedly connected to each cabinet door 11, a power switch A2 and a power switch B21 fixedly connected inside the cabinet body 1, and a handle 22 rotatably connected to each power switch A2 and power switch B21, with the opening and closing states of the two handles 22 being opposite.

[0035] Furthermore, cabinet 1 is the main structure of a DC MCC control cabinet. Closing cabinet door 11 protects the electrical components inside cabinet 1. At the same time, the cooling fan on cabinet door 11 can expel the high temperature inside cabinet 1, preventing the temperature inside cabinet 1 from becoming too high and causing damage to the electrical components. Power switch A2 and power switch B21 are the main power supply and backup power supply, respectively. When the switch handle 22 is raised, it means that the current state is closed and the power is connected. When the switch handle 22 is lowered, it means that the current state is open and the power is disconnected. When the power supply connected by power switch A2 fails or malfunctions, the switch handle 22 of power switch A2 can be pulled down and the switch handle 22 of power switch B21 can be raised. At this time, the electrical components inside cabinet 1 are connected to the other power supply through power switch B21 and continue to work normally.

[0036] Combined with appendix Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, limit holes 23 are provided on each of the handles 22. A fixing frame 3 is fixedly connected inside the cabinet 1. The fixing frame 3 is located between the power switch A2 and the power switch B21. A mounting bracket 31 is fixedly connected to the end of the fixing frame 3 away from the cabinet 1. Turntables 5 are rotatably connected to both sides of the mounting bracket 31. A mounting sleeve 52 is fixedly connected to the side of the turntable 5 away from the mounting bracket 31. A connecting rod 53 is slidably connected inside the mounting sleeve 52. A mounting seat 55 is rotatably connected to the end of the connecting rod 53 away from the mounting sleeve 52. The mounting seat 55 is located away from the connecting rod 53. A hollow connecting rod 6 is fixedly connected to one side. Two hollow connecting rods 6 are respectively located in the limiting holes 23 of power switches A2 and B21 on the same side. Several evenly distributed toothed blocks 51 are fixedly connected to the turntable 5. A return spring 54 is fixedly connected between the connecting rod 53 and the inner wall of the mounting sleeve 52. During the process of the turntable 5 driving the hollow connecting rod 6 to push the gate handle 22 to rotate, the gate handle 22 moves in an arc around its own axis, causing the distance between the limiting hole 23 on the gate handle 22 and the mounting bracket 31 to change continuously. This is achieved through the connecting rod 53 on the mounting sleeve 52. The sliding and return spring 54 inside the bracket automatically adapt to the distance change, preventing the mechanism from jamming. A gear 32 is rotatably connected inside the mounting bracket 31. The gear 32 is located between the two turntables 5, and the gear 32 meshes with the tooth blocks 51 of the two turntables 5 respectively. A hexagonal sleeve A4 is fixedly connected to the side of the mounting bracket 31 away from the cabinet 1. A hexagonal sleeve B41 is slidably connected inside the hexagonal sleeve A4. A mounting rod 42 is fixedly connected to the side of the gear 32 near the hexagonal sleeve A4. The end of the mounting rod 42 away from the gear 32 is located at the hexagonal sleeve. Inside cylinder B41, mounting rod 42 is slidably connected to the inner wall of hexagonal sleeve B41 along an axis. A knob 43 is fixedly connected to the side of hexagonal sleeve B41 away from mounting bracket 31. Since the handles 22 of power switch A2 and power switch B21 have definite closing and opening stroke endpoints, when the handle 22 rotates to the endpoint, the circumferential position of gear 32 and hexagonal sleeve B41 is uniquely determined. Therefore, after each switching operation, hexagonal sleeve B41 is in the same angular position and can accurately lock into hexagonal sleeve A4, ensuring reliable locking.

[0037] Furthermore, when power switching is required, the knob 43 is pulled away from the mounting bracket 31. At this time, the knob 43 moves the hexagonal sleeve B41 out of the hexagonal sleeve A4, thus eliminating the limiting effect of the hexagonal sleeve A4 on the hexagonal sleeve B41. Rotating the knob 43 then causes the hexagonal sleeve B41 to rotate synchronously. The hexagonal sleeve B41 drives the gear 32 to rotate via the mounting rod 42. During rotation, the gear 32 engages with the gear blocks 51 on its two side discs 5, causing the two... Turntables 5 rotate in opposite directions. At this time, turntables 5 drive the mounting sleeve 52, connecting rod 53, mounting base 55, and hollow connecting rod 6 to rotate around the axis of turntables 5. The hollow connecting rod 6 then moves the handles 22 on the same side. The handle 22 on power switch A2 moves downwards, while the handle 22 on power switch B21 moves upwards, thus simultaneously switching power switches A2 and B21. The handles 22 of power switches A2 and B21 have asymmetrical travel characteristics; when opening, only a small angle is needed to disconnect the power, and when closing, a large angle is needed to connect the power. During the synchronous rotation of the two handles 22 at the same angle, power switch A2 opens first to disconnect the power, and power switch B21 closes to connect the power, ensuring disconnection before connection. This protects the electrical components inside cabinet 1 and prevents damage caused by simultaneous connection to two power sources. After completing the power switching operation, turn knob 43 towards mounting bracket 31. As the knob 43 is pushed forward, it causes the hexagonal sleeve B41 to engage with the hexagonal sleeve A4. The inner wall of the hexagonal sleeve A4 then engages with the outer wall of the hexagonal sleeve B41, thus limiting the position of the hexagonal sleeve B41. Once the hexagonal sleeve B41 is limited, it also limits the position of the mounting rod 42 and the gear 32. After the gear 32 is limited, it engages with the toothed blocks 51 on both sides of the turntable 5, thus limiting the position of the turntable 5 and indirectly limiting the position of the gate handle 22, ensuring the stability of the gate handle 22.

[0038] Combined with appendix Figure 4 and Figure 7 As shown, the outer wall of the hollow connecting rod 6 has several evenly distributed communication openings. A support block 61 is slidably connected inside the communication opening of the hollow connecting rod 6. An inclined guide plate 62 is fixedly connected to the side of the support block 61 near the inner side of the hollow connecting rod 6. A limit spring 7 is fixedly connected to the inner wall of the hollow connecting rod 6 near the mounting base 55. A guide seat 71 is fixedly connected to one end of the limit spring 7. A guide groove 72 is opened on the guide seat 71, and the number and position of the grooves are corresponding to each guide plate 62. Each guide plate 62 is fitted into the guide groove 72, and the guide plate 62 is slidably connected to the inner wall of the guide groove 72.

[0039] Furthermore, during the movement of the gate handle 22 driven by the hollow connecting rod 6, when wear occurs on the inner wall of the limiting hole 23 or the support block 61, resulting in a gap between the limiting hole 23 and the support block 61, the guide seat 71 is driven to move horizontally by the thrust of the limiting spring 7. At this time, the guide seat 71 cooperates with the guide plate 62 through the guide groove 72 to realize the pushing action of the support block 61, so that the support block 61 moves outward from the hollow connecting rod 6, ensuring that the support block 61 is always in contact with the inner wall of the limiting hole 23, improving the stability between the limiting hole 23 and the hollow connecting rod 6, and avoiding the problem that the gap caused by wear at the connection between the hollow connecting rod 6 and the inner wall of the limiting hole 23 will cause part of the movement stroke of the hollow connecting rod 6 to be consumed by the gap, and thus fail to drive the gate handle 22 on the other side to complete the closing action in time.

[0040] Combined with appendix Figure 2 , Figure 3 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, each of the two gate handles 22 is fixedly connected to a limit ring 24 on the side near the mounting bracket 31. The limit ring 24 and the limit hole 23 on the gate handle 22 on the same side are aligned on the same axis. The hollow connecting rod 6 is rotatably connected to an outer cover 8 at the end away from the mounting base 55. The outer cover 8 has an annular mounting groove 81 on the side near the hollow connecting rod 6. An annular friction disc 82 is fixedly connected to the opening side of the mounting groove 81. The friction disc 82 fits against the side wall of the gate handle 22 on the same side. The outer cover 8 is sleeved on the outside of the limit ring 24 through the mounting groove 81. A bearing 83 and a torsion spring 84 are fixedly connected between the inner wall of the mounting groove 81 and the outer wall of the limit ring 24, respectively. A positioning sleeve 85 is fixedly connected to one side of the hollow connecting rod 6. The positioning sleeve 85 passes through the hollow connecting rod 6 and extends into the interior of the hollow connecting rod 6. A guide opening 86 is provided on the side wall of the positioning sleeve 85. Several evenly distributed positioning openings 87 are provided on the top of the positioning sleeve 85. Each positioning opening 87 is connected to the guide opening 86. A guide rod 73 is fixedly connected to the side of the guide seat 71 away from the limiting spring 7. The end of the guide rod 73 away from the guide seat 71 is located inside the positioning sleeve 85. A positioning rod 74 is fixedly connected to the guide rod 73. The positioning rod 74 is located inside the guide opening 86 and is slidably connected to the inner wall of the guide opening 86.

[0041] Furthermore, during the movement of the gate handle 22, i.e., during the rotation of the gate handle 22 around its own axis, the outer cover 8 and the limiting ring 24 are in a state of relative rotation. In this state, the torsion spring 84 is tightened, and at the same time, the friction between the outer cover 8 and the gate handle 22 is increased through the friction disc 82, so that the gate handle 22 can drive the outer cover 8 to rotate synchronously during the movement. At this time, the outer cover 8 drives the positioning sleeve 85 to rotate synchronously. During the rotation of the positioning sleeve 85, it will change the position of the guide port 86 and the positioning port 87, so that the positioning rod 74 is inserted from the guide port 86 into the positioning port 87, thereby limiting the positioning rod 74 horizontally, and thus limiting the guide rod 73 synchronously. At this time, the guide rod 73 is limited by the cooperation of the positioning rod 74 and the positioning port 87. After the guide rod 73 is limited, it will exert force on the limiting spring 7. The limit spring 7 cannot extend, preventing the hollow connecting rod 6 from being in motion when the gate handle 22 moves. This avoids the problem of the gap compensation being easily affected by motion interference. After the gate handle 22 of the power switch A2 and power switch B21 is switched, the torsion spring 84 is tightened to the maximum threshold. The force released by the torsion spring 84 at this moment is greater than the friction force between the friction plate 82 and the side wall of the gate handle 22. Through this instantaneous torque and the inertia generated, the outer cover 8 is driven to reset. At this time, the outer cover 8 drives the positioning sleeve 85 to reset synchronously. At this time, the positioning rod 74 will move from the positioning port 87 to the guide port 86. The horizontal limiting force of the positioning port 87 on the positioning rod 74 disappears. At this time, the limit spring 7 will also be released synchronously. At this time, the limit spring 7 can extend normally and perform compensation work.

[0042] Working principle: First, the cabinet 1 is installed in the designated location. Then, the cabinet 1 is connected to the pump body. The pump body builds a water circulation cooling system. The flowing water channel is used to continuously and stably cool the equipment and related components in the data center, ensuring that the equipment in the data center operates in a suitable temperature environment. In addition, the cabinet 1 also has a lighting control function, which can centrally control the lighting system in the cabin or data center to achieve unified management of environmental lighting.

[0043] In the initial state, the handle 22 of power switch A2 is in the closed position, and the handle 22 of power switch B21 is in the open position. At this time, the main power supply supplies power to the electrical components in cabinet 1 through power switch A2.

[0044] When power needs to be switched, the operator pulls knob 43 away from mounting bracket 31, hexagonal sleeve B41 moves out of hexagonal sleeve A4, releasing the lock on gear 32. Then, knob 43 is rotated, and knob 43 drives gear 32 to rotate through hexagonal sleeve B41 and mounting rod 42. Gear 32 drives the two turntables 5 to rotate in opposite directions through tooth block 51. Turntable 5 drives mounting sleeve 52, connecting rod 53, mounting base 55 and hollow connecting rod 6 to rotate around the axis of turntable 5. Hollow connecting rod 6 pushes the handle 22 on the same side to rotate. The handle 22 of power switch A2 opens downwards, and the handle 22 of power switch B21 closes upwards. Because the handles 22 of power switch A2 and power switch B21 have asymmetrical stroke characteristics, during the process of the two handles 22 rotating synchronously at the same angle, power switch A2 completes the opening and power-off first, and power switch B21 completes the closing and power-on second, ensuring the order of first disconnection and then power-on.

[0045] During the rotation of the gate handle 22, the outer cover 8 rotates along with the friction between the friction disc 82 and the side wall of the gate handle 22. The outer cover 8 and the limiting ring 24 fixed on the gate handle 22 rotate relative to each other, the torsion spring 84 is tightened, and the outer cover 8 drives the positioning sleeve 85 to rotate synchronously. The positioning port 87 on the positioning sleeve 85 moves to the fixed position of the positioning rod 74 as it rotates. The positioning rod 74 is inserted into the positioning port 87, thereby locking the axial position of the guide rod 73 and the guide seat 71, so that the limiting spring 7 cannot extend, and avoids the gap compensation being mistakenly performed due to motion interference during the movement of the gate handle 22.

[0046] When the handles 22 of power switches A2 and B21 are switched to the position, the torsion spring 84 is tightened to the maximum threshold. At this time, the force released by the torsion spring 84 is greater than the friction between the friction disc 82 and the side wall of the handle 22. The torsion spring 84 drives the outer cover 8 to rotate in the opposite direction to reset. The outer cover 8 drives the positioning sleeve 85 to rotate in the same direction. The positioning port 87 disengages from the positioning rod 74, releasing the lock on the guide rod 73 and the guide seat 71. The limit spring 7 restores its free extension capacity. Then, the operator pushes the knob 43 towards the mounting bracket 31, so that the hexagonal sleeve B41 is inserted into the hexagonal sleeve A4. The inner wall of the hexagonal sleeve A4 limits the hexagonal sleeve B41 in a circumferential manner, thereby locking the gear 32, the turntable 5 and the handle 22, and maintaining the switched state.

[0047] After the gate handle 22 comes to rest, if wear gaps appear on the inner wall of the limiting hole 23 or the support block 61 due to long-term use, the limiting spring 7 pushes the guide seat 71 to move horizontally away from the mounting seat 55. The guide groove 72 on the guide seat 71 slides with the inclined guide plate 62, converting the axial thrust into radial thrust, pushing the support block 61 to move outward along the communication port of the hollow connecting rod 6, so that the support block 61 always fits against the inner wall of the limiting hole 23, automatically eliminating the wear gaps.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A DC MCC control cabinet with a dual power supply anti-misoperation switching mechanism, comprising a cabinet (1), wherein a power switch A (2) and a power switch B (21) are fixedly connected inside the cabinet (1), and a handle (22) is rotatably connected to both the power switch A (2) and the power switch B (21), wherein the opening and closing states of the two handles (22) are opposite, characterized in that: Limiting holes (23) are provided on each of the gate handles (22); A fixed frame (3) is fixedly connected inside the cabinet (1). The fixed frame (3) is located between power switch A (2) and power switch B (21). A mounting frame (31) is fixedly connected to one end of the fixed frame (3) away from the cabinet (1). A turntable (5) is rotatably connected to both sides of the mounting frame (31). A mounting sleeve (52) is fixedly connected to one side of the turntable (5) away from the mounting frame (31). A connecting rod (53) is slidably connected inside the mounting sleeve (52). A mounting base (55) is rotatably connected to one end of the connecting rod (53) away from the mounting sleeve (52). A hollow connecting rod (6) is fixedly connected to one side of the mounting base (55) away from the connecting rod (53). The two hollow connecting rods (6) are located in the limiting holes (23) of power switch A (2) and power switch B (21) on the same side, respectively. The hollow connecting rod (6) has several evenly distributed communication openings on its outer wall. A support block (61) is slidably connected in the communication opening of the hollow connecting rod (6). An inclined guide plate (62) is fixedly connected to the side of the support block (61) near the hollow connecting rod (6). A limit spring (7) is fixedly connected to the inner wall of the hollow connecting rod (6) near the mounting base (55). A guide seat (71) is fixedly connected to one end of the limit spring (7). A guide groove (72) is opened on the guide seat (71) in a number and position corresponding to each guide plate (62). Each guide plate (62) is fitted into the guide groove (72). The guide plate (62) is slidably connected to the inner wall of the guide groove (72). The hollow connecting rod (6) is rotatably connected to an outer cover (8) at the end away from the mounting base (55). The outer cover (8) has an annular mounting groove (81) on the side near the hollow connecting rod (6). An annular friction disc (82) is fixedly connected to the opening side of the mounting groove (81). The friction disc (82) is in contact with the side wall of the gate handle (22) on the same side. The outer cover (8) is sleeved on the outside of the limiting ring (24) through the mounting groove (81). A bearing (83) and a torsion spring (84) are fixedly connected between the inner wall of the mounting groove (81) and the outer wall of the limiting ring (24).

2. A DC MCC control cabinet with a dual power supply anti-misoperation switching mechanism according to claim 1, characterized in that: Both of the two gate handles (22) are fixedly connected to a limiting ring (24) on the side near the mounting bracket (31), and the limiting ring (24) is aligned with the limiting hole (23) on the same side gate handle (22) along the same axis.

3. A DC MCC control cabinet with a dual power supply anti-misoperation switching mechanism according to claim 1, characterized in that: The outer cover (8) is fixedly connected to a positioning sleeve (85) on the side near the hollow connecting rod (6). The positioning sleeve (85) penetrates the hollow connecting rod (6) and extends into the interior of the hollow connecting rod (6). A guide port (86) is provided on the side wall of the positioning sleeve (85). Several evenly distributed positioning ports (87) are provided on the top of the positioning sleeve (85). Each positioning port (87) is connected to the guide port (86).

4. A DC MCC control cabinet with a dual power supply anti-misoperation switching mechanism according to claim 3, characterized in that: A guide rod (73) is fixedly connected to the side of the guide seat (71) away from the limiting spring (7). The end of the guide rod (73) away from the guide seat (71) is located inside the positioning sleeve (85). A positioning rod (74) is fixedly connected to the guide rod (73). The positioning rod (74) is located inside the guide opening (86). The positioning rod (74) is slidably connected to the inner wall of the guide opening (86).

5. A DC MCC control cabinet with a dual power supply anti-misoperation switching mechanism according to claim 1, characterized in that: A number of evenly distributed toothed blocks (51) are fixedly connected to the turntable (5), and a return spring (54) is fixedly connected between the connecting rod (53) and the inner wall of the mounting sleeve (52).

6. A DC MCC control cabinet with a dual power supply anti-misoperation switching mechanism according to claim 5, characterized in that: The mounting bracket (31) is rotatably connected to a gear (32), which is located between two turntables (5). The gear (32) meshes with the tooth blocks (51) of the two turntables (5).

7. A DC MCC control cabinet with a dual power supply anti-misoperation switching mechanism according to claim 6, characterized in that: The mounting bracket (31) is fixedly connected to a hexagonal sleeve A (4) on the side away from the cabinet (1). A hexagonal sleeve B (41) is slidably connected inside the hexagonal sleeve A (4). The gear (32) is fixedly connected to a mounting rod (42) on the side near the hexagonal sleeve A (4). The end of the mounting rod (42) away from the gear (32) is located inside the hexagonal sleeve B (41). The mounting rod (42) and the inner wall of the hexagonal sleeve B (41) are slidably connected along the axis. A knob (43) is fixedly connected to the side of the hexagonal sleeve B (41) away from the mounting bracket (31).

8. A DC MCC control cabinet with a dual power supply anti-misoperation switching mechanism according to claim 7, characterized in that: The cabinet (1) is rotatably connected to a double-opening cabinet door (11), and a cooling fan is fixedly connected to each cabinet door (11).

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