A modular low voltage switch cabinet

Abstract

The present invention belongs to the technical field of switch cabinets, and is specifically a modular low-voltage switch cabinet, including a cabinet body and a drawer unit, wherein the drawer unit includes a bottom plate, a panel, a left side plate, a back plate and a right side plate, a first operating handle and a second operating handle are respectively arranged at both ends of the panel, a mounting plate is fixed between the left side plate and the right side plate, a circuit breaker is fixed on one side of the mounting plate, a manual operating mechanism is arranged on one side of the circuit breaker, and the manual operating mechanism is drivingly connected with the second operating handle, a cover plate is fixed at one end of the bottom plate, a latch assembly for locking the drawer unit is installed at the bottom of the cover plate, an interlocking mechanism is arranged at the top of the cover plate, and the manual operating mechanism controls the latch assembly and the first operating handle through the interlocking mechanism. The locking mechanism of the drawer unit prevents misoperation, reduces the risk of electric shock to operators, and ensures that the drawer unit can be operated only when the circuit breaker is disconnected.

Description

Technical Field

[0001] The invention belongs to the technical field of switch cabinets, in particular to a modular low-voltage switch cabinet. Background Art

[0002] Low-voltage switchgear is a type of complete set of power distribution equipment. It assembles switchgear, measuring instruments, protective electrical appliances and auxiliary equipment in a closed or semi-closed metal cabinet or on a screen to form a low-voltage power distribution device. The modular drawer design in the low-voltage switchgear is an important innovation in the modern power system, which greatly improves the flexibility, reliability and maintainability of the power distribution equipment.

[0003] In the existing low-voltage switch cabinet, after the drawer unit is installed in the cabinet, the drawer unit is not locked relative to the cabinet. When the low-voltage switch cabinet is in a live state, if the operator opens it rashly, a safety accident is likely to occur. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention proposes a modular low-voltage switch cabinet, which aims to lock the drawer unit in the switch cabinet to ensure the safety of operators and the stable operation of equipment. Specifically, it is achieved through the following technical solutions:

[0005] A modular low-voltage switch cabinet comprises a cabinet body and a drawer unit, wherein the cabinet body is provided with a partition for supporting the drawer unit, the drawer unit comprises a bottom plate, the outer edge of the bottom plate is sequentially surrounded by a panel, a left side plate, a back plate and a right side plate; a first operating handle is provided at one end of the panel, and a second operating handle is provided at the other end of the panel; an incoming line moving plug-in is fixed at one end of the back plate, and an outgoing line moving plug-in is fixed at the other end of the back plate; a mounting plate is fixed between the left side plate and the right side plate; a circuit breaker is fixed at one side of the mounting plate; one end of the circuit breaker is connected to the incoming line moving plug-in through an incoming line connection row, and the other end of the circuit breaker is connected to the outgoing line moving plug-in through an outgoing line connection row; a manual operating mechanism is provided at one side of the circuit breaker, and the manual operating mechanism is drivingly connected to the second operating handle; a cover plate is fixed at one end of the bottom plate, a latch assembly for locking the drawer unit is installed at the bottom of the cover plate, an interlocking mechanism is provided at the top of the cover plate, and the manual operating mechanism controls the latch assembly and the first operating handle through the interlocking mechanism.

[0006] Preferably, the interlocking mechanism includes a first locking mechanism and a second locking mechanism, the first locking mechanism is fixed at one end of the cover plate, the first operating handle controls the latch assembly through the first locking mechanism, the second locking mechanism is fixed at the other end of the cover plate, and the manual operating mechanism controls the latch assembly through the second locking mechanism.

[0007] Preferably, the latch assembly includes a transmission gear installed at the bottom of the cover plate, and a second latch pointing to the left plate and a first latch pointing to the right plate are slidably installed at the bottom of the cover plate, one side of the first latch is provided with a first tooth groove cooperating with the transmission gear, and one side of the second latch is provided with a second tooth groove cooperating with the transmission gear.

[0008] Preferably, the first locking mechanism includes a rack, a first gear and a second gear, a first bracket and a second bracket spaced apart are fixed to one end of the top of the cover plate, the first gear is meshed with the second gear and both are installed between the first bracket and the second bracket, a rack matching the second gear is fixed to one side of the first latch, and the first gear is provided with a first transmission shaft fixedly connected to the first operating handle at one end facing the first bracket.

[0009] Preferably, a limit plate is provided at one end of the first gear facing the second bracket, and two groups of limit holes are provided on the limit plate. A bent plate is provided on one side of the second bracket, and a guide column is fixed to one end of the bent plate. The end of the guide column is covered with a sliding lock, and the lock passes through the guide hole of the second bracket and is embedded in one of the limit holes to achieve locking of the first gear. The guide column is covered with a spring, and the spring is pressed between the lock and the bent plate.

[0010] Preferably, the second locking mechanism includes a second transmission shaft, one end of the second transmission shaft is fixedly connected to the second operating handle, the other end of the second transmission shaft is connected to the manual operating mechanism, a vertical plate is fixed to the top of the cover plate, one end of the vertical plate is provided with a mounting hole, a column seat is fixed to the shaft body of the second transmission shaft, the column seat is rotatably connected to the mounting hole, a first transmission pin is provided on one side of the column seat, a plug plate is slidably connected to one side of the vertical plate, the top of the plug plate is hooked and connected to the first transmission pin, the second plug pin is provided with a first waist hole matching the plug plate, and the cover plate is provided with an avoidance hole facing the first waist hole.

[0011] Preferably, the manual operating mechanism includes a shield and a retaining frame, the shield covers the retaining frame and is fixedly connected to the circuit breaker, a rotating seat is fixed to one end of the second transmission shaft, one end of the rotating seat passes through the shield and is fixed to a transmission plate, one end of the transmission plate is provided with a second waist hole, one side of the transmission plate is provided with a first guide pin, the end surface of the shield is provided with an arc-shaped hole matching the first guide pin, one end of the retaining frame is provided with a rotating shaft, the rotating shaft is rotatably connected to the shield, the other end of the retaining frame is provided with a second guide pin passing through the second waist hole, and pressure wheels for pushing the handle are provided on both sides of the inner cavity of the retaining frame.

[0012] Preferably, a fixing plate is provided on one side of the partition, and a fixed socket matching the input line dynamic plug-in is fixed on one end of the fixing plate.

[0013] Preferably, the incoming line dynamic plug-in includes a dynamic seat body, the dynamic seat body is provided with a plurality of plug-in parts, the front end of the plug-in part is provided with an intermediate plate, the end of the intermediate plate is provided with two groups of buckles distributed up and down, the interior of the plug-in part is provided with a wiring part, the wiring part is composed of a pair of touch panels arranged on the upper and lower sides of the intermediate plate, the middle part of the touch panel is provided with a card interface matching the buckle, the two sides of the touch panel are provided with wing edges, the inner wall of the plug-in part is provided with card grooves matching the wing edges, the end of the touch panel is divided into two groups of contact parts, and the end of the contact part is provided with a contact.

[0014] Preferably, the fixed socket includes a fixed seat body, a copper busbar and a buckle plate, the buckle plate is fixed to the rear end of the fixed seat body to clamp the copper busbar, the front end of the fixed seat body is provided with a docking part corresponding to the plug-in part one by one, the other end of the fixed seat body is provided with a socket connected to the docking part, one end of the copper busbar extends into the docking part through the socket, the docking part is embedded in the plug-in part, and the two groups of contacts at the end of the contact plate clamp the copper busbar.

[0015] After adopting the above technical solution, the beneficial effects of the present invention are:

[0016] The design of the first operating handle and the second operating handle allows the operator to easily control the entry and exit of the drawer unit and the status of the circuit breaker. The locking mechanism of the drawer unit prevents misoperation, reduces the risk of electric shock for the operator, and ensures that the drawer unit can be operated only when the circuit breaker is off. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a structural schematic diagram of a drawer unit;

[0020] Figure 3 It is a structural schematic diagram of the interlocking mechanism;

[0021] Figure 4 is a schematic diagram of the structure of the latch assembly;

[0022] Figure 5 is a structural schematic diagram of a first locking mechanism;

[0023] Figure 6 is a schematic structural diagram of a second bracket;

[0024] Figure 7 This is a schematic diagram of the installation of the lock;

[0025] Figure 8 is a structural schematic diagram of a second locking mechanism;

[0026] Fig. 9 This is the installation diagram of the manual operating mechanism;

[0027] Fig.10 It is a structural diagram of the linkage component;

[0028] Fig.11 This is a schematic diagram of the installation of the linkage components;

[0029] Fig.12 is a schematic diagram of the structure of the guide rail;

[0030] Fig.13 This is the installation diagram of the fixed socket;

[0031] Fig.14 is a schematic diagram of the structure of a fixed socket;

[0032] Fig.15 This is the installation diagram of the incoming line dynamic plug-in;

[0033] Fig.16 It is a structural schematic diagram of the moving seat body;

[0034] Fig.17 The figure is a schematic diagram of the installation of the touch panel.

[0035] Description of the accompanying drawings: 1-partition, 2-guide rail, 3-drawer unit, 4-first operating handle, 5-panel, 6-second operating handle, 7-bottom plate, 8-manual operating mechanism, 9-circuit breaker, 10-left side plate, 11-inlet moving plug-in, 12-back plate, 13-mounting plate, 14-outlet moving plug-in, 15-right side plate, 16-latch assembly, 17-first locking mechanism, 18-first transmission shaft, 19-cover plate, 20-second locking mechanism, 21-second transmission shaft, 22-first latch, 23-first tooth groove, 24-second tooth groove, 25-second latch, 26-first waist hole, 27-transmission gear, 28-first bracket, 29-rack, 30-first gear, 31-limiting plate, 32-limiting hole, 33-second gear, 34-second bracket, 35-guide column, 36-bend plate, 37-spring, 3 8-lock head, 39-guide hole, 40-insert plate, 41-first transmission pin, 42-column seat, 43-vertical plate, 44-mounting hole, 45-pin hole, 46-Z-shaped hole, 47-second transmission pin, 48-shield, 49-arc hole, 50-first guide pin, 51-second waist hole, 52-second guide pin, 53-transmission plate, 54-retaining frame, 55-rotating shaft, 56-rotating seat, 57-pressing wheel, 58 -roller, 59-positioning hole, 60-limiting part, 61-through hole, 62-guide wheel, 63-fixed plate, 64-fixed socket, 65-fixed seat body, 66-jack, 67-threaded hole, 68-wiring hole, 69-buckle plate, 70-copper busbar, 71-buckle, 72-moving seat body, 73-middle plate, 74-touch plate, 75-card slot, 76-card interface, 77-wing edge, 78-contact part, 79-contact. DETAILED DESCRIPTION

[0036] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention.

[0037] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0038] like Figure 1 , Figure 2 and Fig.12 As shown, a modular low-voltage switch cabinet includes a cabinet body and a drawer unit 3. The drawer unit 3 includes a bottom plate 7, and the outer edge of the bottom plate 7 is surrounded by a panel 5, a left side plate 10, a back plate 12 and a right side plate 15 in sequence. A partition 1 for supporting the drawer unit 3 is provided inside the cabinet body, and guide rails 2 are provided on both sides of the partition 1 to provide guidance and support for the sliding of the drawer unit 3. Limiting parts 60 are provided at both ends of the guide rail 2 to limit the stroke of the drawer unit 3 and prevent the drawer unit 3 from being excessively pulled out or pushed in. A positioning hole 59 is provided on one side of the end of the guide rail 2 (the end close to the back plate 12), and the left side plate 10 and the right side plate 15 are provided with a through hole 61 facing the positioning hole 59. A roller 58 is installed on one side of the left side plate 10 and the right side plate 15, and a guide wheel 62 is installed on the other side. The two ends of the body of the guide rail 2 are relatively vertically folded to form a retaining edge to limit the travel route of the roller 58. The roller 58 is located in the guide rail 2, and its outer diameter is adapted to the distance between the two ribs of the guide rail 2, so that the drawer unit 3 can slide smoothly along the guide rail 2. The guide wheel 62 is also located in the guide rail 2 and fits the rib at the upper end of the body, playing the role of auxiliary guidance and stabilization of the drawer unit 3. When the drawer unit 3 is pulled outward or pushed back, the travel path of the roller 58 is blocked by the limiter 60, so that the travel of the drawer unit 3 is limited.

[0039] like Figure 2 As shown, a mounting plate 13 is fixed between the left side plate 10 and the right side plate 15, and a circuit breaker 9 is fixed to one side of the mounting plate 13. An inlet actuator plug-in 11 is fixed to one end of the back plate 12 for receiving power input from an external power source. An outlet actuator plug-in 14 is fixed to the other end of the back plate 12 for outputting power to the outside of the drawer unit 3 or connecting to other devices. One end of the circuit breaker 9 is connected to the inlet actuator plug-in 11 through an inlet connection row, and the other end of the circuit breaker 9 is connected to the outlet actuator plug-in 14 through an outlet connection row. Fig.13 As shown, a fixing plate 63 is provided on one side of the partition 1, and a fixed socket 64 adapted to the input line dynamic plug-in 11 and the output line dynamic plug-in 14 is fixed at one end of the fixing plate 63. When the drawer unit 3 is pushed into the switch cabinet, the input line dynamic plug-in 11 and the output line dynamic plug-in 14 are respectively connected with the fixed socket 64 in the switch cabinet to form a channel for power input and output.

[0040] The structures of the inlet movable plug-in 11 and the outlet movable plug-in 14 are consistent. Taking the inlet movable plug-in 11 as an example, it includes a movable seat body 72 .

[0041] like Figures 15 to 17As shown, the movable seat body 72 is fixedly connected to the back plate 12 by bolts. The movable seat body 72 is provided with a plurality of plug-in parts, and an intermediate plate 73 is provided at the front end of each plug-in part. A wiring part is provided inside the plug-in part, and the wiring part is composed of a pair of touch plates 74 disposed on the upper and lower sides of the intermediate plate 73, and the intermediate plate 73 provides a mounting reference for the touch plate 74. The end of the intermediate plate 73 is provided with buckles 71 distributed up and down, and the middle of the touch plate 74 is provided with a card interface 76 that matches the buckle 71. Wing edges 77 are provided on both sides of the touch plate 74, and card grooves 75 that match the wing edges 77 are provided on both sides of the inner wall of the plug-in part. Two groups of contact parts 78 are divided at the end of the touch plate 74, and contacts 79 are provided at the ends of the contact parts 78, forming the key part of electrical contact.

[0042] When the touch panel 74 is pushed into the plug-in portion along the card slot 75, the buckle 71 will continue to be squeezed and closely adhere to the surface of the touch panel 74. When the touch panel 74 is pushed to the bottom, the buckle 71 will be snapped into the card interface 76 in the middle of the touch panel 74 while returning to its original shape, thereby fixing the touch panel 74. The thickness of the wing edge 77 is consistent with the width of the card slot 75. Since their sizes are completely matched, the touch panel 74 is firmly fixed in the thickness direction. The above measures prevent the touch panel 74 from loosening or shifting during use, thereby ensuring the stability and reliability of the electrical connection.

[0043] like Fig.14 and Fig.15 As shown, the fixed socket 64 includes a fixed seat body 65, a copper bar 70 and a buckle plate 69. The buckle plate 69 is fixed to the rear end of the fixed seat body 65, and the copper bar 70 is clamped between the fixed seat body 65 and the buckle plate 69, so as to ensure the stability of the copper bar 70 and prevent it from moving or loosening during operation. The front end of the fixed seat body 65 is provided with a docking part corresponding to the plug-in part, and the other end of the fixed seat body 65 is provided with a plug hole 66 connected to the docking part. One end of the copper bar 70 is inserted into the docking part of the fixed seat body 65 through the plug hole 66 so as to make electrical contact with the corresponding part of the plug-in part.

[0044] A wiring hole 68 is provided on one side of the pinch plate 69, and a threaded hole 67 corresponding to the wiring hole 68 is provided on the copper busbar 70. The wiring terminal of the external busbar passes through the wiring hole 68, and the wiring terminal of the busbar is fixedly connected to the copper busbar 70 by screws or other fasteners fixedly connected to the threaded hole 67, thereby ensuring the reliability and stability of the electrical connection.

[0045] When the plug-in portion of the movable seat body 72 is inserted into the docking portion of the fixed socket 64, the contacts 79 of the plug-in portion will make electrical contact with the copper bar 70, thereby establishing an electrical connection. The two sets of contacts 79 at the end of the contact plate 74 clamp the copper bar 70, further ensuring the stability and reliability of the electrical connection.

[0046] like Figure 2 and Figure 3As shown, a manual operating mechanism 8 is provided on one side of the circuit breaker 9 for controlling the handle of the circuit breaker 9 to realize the on-off operation of the circuit. A cover plate 19 is fixed to one end of the bottom plate 7, and a latch assembly 16 for locking the drawer unit 3 is installed at the bottom of the cover plate 19. A first operating handle 4 is provided at one end of the panel 5, and a second operating handle 6 is provided at the other end of the panel 5. An interlocking mechanism is provided on the top of the cover plate 19. The manual operating mechanism 8 controls the latch assembly 16 and the first operating handle 4 through the interlocking mechanism, and the second operating handle 6 is drivingly connected to the manual operating mechanism 8.

[0047] The interlocking mechanism includes a first locking mechanism 17 and a second locking mechanism 20. The first locking mechanism 17 is fixed to one end of the cover plate 19, and the first operating handle 4 controls the state of the latch assembly 16 through the first locking mechanism 17. The second locking mechanism 20 is fixed to the other end of the cover plate 19, and the manual operating mechanism 8 controls the latch assembly 16 in linkage with the second locking mechanism 20.

[0048] like Figure 4 As shown, the latch assembly 16 includes a transmission gear 27 installed at the bottom of the cover plate 19. The first latch 22 and the second latch 25 are slidably installed at the bottom of the cover plate 19. The first latch 22 corresponds to the through hole 61 of the right side plate 15, and the second latch 25 corresponds to the through hole 61 of the left side plate 10. A first tooth groove 23 matching the transmission gear 27 is provided on one side of the first latch 22, and a second tooth groove 24 matching the transmission gear 27 is provided on one side of the second latch 25. Through the transmission of the transmission gear 27, the first latch 22 and the second latch 25 can be extended or retracted at the same time.

[0049] like Figure 5 As shown, the first locking mechanism 17 includes a rack 29, a first gear 30 and a second gear 33. A first bracket 28 and a second bracket 34 are fixed to one end of the top of the cover plate 19, and the first gear 30 and the second gear 33 are installed between the first bracket 28 and the second bracket 34 to ensure that they can rotate smoothly. The first gear 30 is meshed with the second gear 33, and the first gear 30 is provided with a first transmission shaft 18 at one end of the first gear 30 facing the first bracket 28. The first transmission shaft 18 passes through the panel 5 and is fixedly connected to the first operating handle 4. A rack 29 is fixed to one side of the first latch 22, and the rack 29 is meshed with the second gear 33.

[0050] The user rotates the first transmission shaft 18 by operating the first operating handle 4, and the rotation of the first transmission shaft 18 drives the first gear 30 fixedly connected thereto to rotate. The first gear 30 is meshed with the second gear 33. When the first gear 30 rotates, it drives the second gear 33 to rotate in the opposite direction. The second gear 33 cooperates with the rack 29. The rotation of the second gear 33 drives the rack 29 to move horizontally, thereby driving the first latch 22 to move. The movement of the first latch 22 drives the transmission gear 27 to rotate, thereby driving the second latch 25 to move. Since the transmission gear 27 is meshed with the first tooth groove 23 and the second tooth groove 24 at the same time, it can ensure that the first latch 22 and the second latch 25 are synchronized when extending or retracting.

[0051] The first operating handle 4 is rotated, and after the transmission of the transmission chain, the first latch 22 and the second latch 25 are simultaneously extended from the bottom of the cover plate 19, move along their respective paths, pass through the through holes 61 of the right side plate 15 and the left side plate 10, and are inserted into the positioning holes 59 of the corresponding guide rails 2, thereby locking the drawer unit 3. When the drawer unit 3 needs to be unlocked, the first operating handle 4 is reversely operated, and after the transmission of the transmission chain, the first latch 22 and the second latch 25 are simultaneously pulled out from the positioning holes 59 and the through holes 61, and completely retracted to the bottom of the cover plate 19, and they no longer apply any locking force to the drawer unit 3. At this time, the user can easily pull out the drawer unit 3.

[0052] like Figure 6 and Figure 7 As shown, a limiting plate 31 is provided at one end of the first gear 30 facing the second bracket 34. Two groups of limiting holes 32 are provided on the limiting plate 31, and the two groups of limiting holes 32 correspond to the locking position of the first operating handle 4 and the unlocking position of the first operating handle 4 respectively. A bent plate 36 is provided on one side of the second bracket 34, and a guide column 35 is fixed to one end of the bent plate 36. The end of the guide column 35 is covered with a sliding lock 38, and the lock 38 passes through the guide hole 39 of the second bracket 34 and is embedded in one of the limiting holes 32 to achieve the locking of the first gear 30. A spring 37 is provided on the guide column 35, and the spring 37 is pressed between the lock 38 and the bent plate 36. The end of the lock 38 is a ball head, and the limiting hole 32 is a hemispherical groove adapted thereto.

[0053] When the first gear 30 is in the locked position, the lock head 38 is aligned with one of the limiting holes 32. Under the push of the spring 37, the lock head 38 is embedded in the limiting hole 32, limiting the further rotation of the first gear 30, and the entire first locking mechanism 17 is locked. When the first operating handle 4 is operated, the first gear 30 drives the limiting plate 31 to rotate. When the first gear 30 rotates to the unlocked position, the lock head 38 gradually overcomes the thrust of the spring 37 and withdraws from the current limiting hole 32. Once the lock head 38 completely withdraws from the limiting hole 32, the first gear 30 can rotate freely. When the first gear 30 rotates to the unlocked position, under the push of the spring 37, the lock head 38 is embedded in the current limiting hole 32, again limiting the further rotation of the first gear 30.

[0054] like Figure 8 As shown, the second locking mechanism 20 includes a second transmission shaft 21 and a plug plate 40. One end of the second transmission shaft 21 is fixedly connected to the second operating handle 6, and the other end of the second transmission shaft 21 is connected to the manual operating mechanism 8. A vertical plate 43 is fixed to the top of the cover plate 19, and a mounting hole 44 is provided at one end of the vertical plate 43. A column seat 42 is fixed to the shaft body of the second transmission shaft 21, and the column seat 42 is rotatably connected to the mounting hole 44. A pin hole 45 is provided at one end of the plug plate 40, and a first transmission pin 41 is provided on one side of the column seat 42. The first transmission pin 41 passes through the pin hole 45 to complete the hook connection between the plug plate 40 and the first transmission pin 41. The vertical plate 43 is provided with a Z-shaped hole 46, and a second transmission pin 47 inserted into the Z-shaped hole 46 is provided on the side of the plug plate 40 facing the vertical plate 43. The second plug pin 25 is provided with a first waist hole 26 that matches the plug plate 40, and the cover plate 19 is provided with an avoidance hole facing the first waist hole 26.

[0055] The second transmission shaft 21 drives the column seat 42 to rotate, and the first transmission pin 41 will swing accordingly, thereby driving the insert plate 40 to move relative to the vertical plate 43. This movement will cause the second transmission pin 47 to slide in the Z-shaped hole 46, and the travel route of the insert plate 40 is determined by the design of the Z-shaped hole 46. The Z-shaped hole 46 includes two sets of vertical and parallel vertical channels, and the two sets of vertical channels are connected by an inclined channel.

[0056] When the second transmission shaft 21 is in the initial position (the second operating handle 6 is in the locked position), the second transmission pin 47 is at the end position of one of the vertical tracks. At this time, the plug plate 40 passes through the avoidance hole and is inserted into the first waist hole 26, and the second latch 25 is locked. In this locked state, even if the first operating handle 4 is operated, the latch assembly 16 cannot be controlled.

[0057] When the second operating handle 6 rotates to the unlocking position, the second transmission shaft 21 drives the column seat 42 to rotate, and the first transmission pin 41 lifts the plug plate 40, and the second plug pin 25 moves up along the current vertical path, and after being guided by the inclined path, it moves to the end of the travel of another vertical path. At this time, the plug plate 40 is pulled out of the first waist hole 26, and the plug assembly 16 is unlocked.

[0058] like Figures 9 to 11 As shown, the manual operating mechanism 8 includes a shield 48 and a retaining frame 54. The shield 48 covers the retaining frame 54 and is fixedly connected to the circuit breaker 9. A rotating seat 56 is fixed to one end of the second transmission shaft 21, and one end of the rotating seat 56 passes through the shield 48 and is fixed to a transmission plate 53, so as to transmit the rotational movement of the second transmission shaft 21 to the transmission plate 53. A second waist hole 51 is provided at one end of the transmission plate 53, a first guide pin 50 is provided at one side of the transmission plate 53, and an arc hole 49 matching the first guide pin 50 is provided on the end surface of the shield 48. The first guide pin 50 slides in the arc hole 49 of the shield 48, limiting the rotation range of the transmission plate 53 and providing a guiding function. A rotating shaft 55 is provided at one end of the retaining frame 54, and the rotating shaft 55 is rotatably connected to the shield 48, allowing the retaining frame 54 to rotate relative to the shield 48. A second guide pin 52 passing through the second waist hole 51 is provided at the other end of the retaining frame 54. Pressure wheels 57 are provided on both sides of the inner cavity of the retaining frame 54 for contacting the handle of the circuit breaker 9 to push or pull the handle.

[0059] When a fault occurs in the circuit (such as overload, short circuit, etc.), the circuit breaker 9 will automatically trip. The movement of the handle will cause the push holder 54 in contact with it to rotate, and then drive the transmission plate 53 to rotate through the second guide pin 52, and the second transmission shaft 21 will rotate accordingly, and the manual operating mechanism 8 will rotate to the unlocking position. While unlocking the latch assembly 16, the operator can also check whether the circuit breaker 9 has tripped according to the state of the manual operating mechanism 8.

[0060] If manual tripping is required, the manual operating mechanism 8 can be actively rotated to the unlocking position, and the manual operating mechanism 8 drives the transmission plate 53 to rotate through the second transmission shaft 21. The rotation of the transmission plate 53 will push the retaining frame 54 to rotate around the rotating shaft 55, and the rotation of the retaining frame 54 will approach and push the handle, thereby realizing the tripping of the circuit breaker 9.

[0061] According to the embodiments of the present invention as described above, these embodiments do not describe all the details in detail, nor do they limit the invention to specific embodiments. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can make good use of the present invention and the modified use based on the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A modular low-voltage switch cabinet, comprising a cabinet body and a drawer unit (3), wherein the cabinet body is provided with a partition (1) for supporting the drawer unit (3), wherein the drawer unit (3) comprises a bottom plate (7), wherein the outer edge of the bottom plate (7) is surrounded in sequence by a front plate (5), a left side plate (10), a back plate (12) and a right side plate (15); characterized in that: A first operating handle (4) is provided at one end of the panel (5), a second operating handle (6) is provided at the other end of the panel (5), an incoming line actuator plug-in (11) is fixed at one end of the back panel (12), an outgoing line actuator plug-in (14) is fixed at the other end of the back panel (12), a mounting plate (13) is fixed between the left side panel (10) and the right side panel (15), a circuit breaker (9) is fixed on one side of the mounting plate (13); a handle is provided on one side of the circuit breaker (9), one end of the circuit breaker (9) is connected to the incoming line actuator plug-in (11) via an incoming line connection row, and the The other end of the circuit breaker (9) is connected to the outgoing line moving plug-in (14) via an outgoing line connection row; a manual operating mechanism (8) for controlling a handle is installed on one side of the circuit breaker (9); the manual operating mechanism (8) is drivingly connected to the second operating handle (6); a cover plate (19) is fixed to one end of the bottom plate (7); a latch assembly (16) for locking the drawer unit (3) is installed at the bottom of the cover plate (19); an interlocking mechanism is provided at the top of the cover plate (19); the manual operating mechanism (8) controls the latch assembly (16) and the first operating handle (6) in a linkage manner through the interlocking mechanism. The manual operating mechanism (8) is linked to control the latch assembly (16) through the second locking mechanism (20); the manual operating mechanism (8) comprises a shield (48) and a retaining frame (54); the shield (48) covers the retaining frame (54) and is fixedly connected to the circuit breaker (9); the second locking mechanism (20) comprises a second transmission shaft (21); one end of the second transmission shaft (21) is fixed with a rotating seat (56); one end of the rotating seat (56) passes through the shield (48) and is fixed with a transmission seat (56). A movable plate (53) is provided at one end of the transmission plate (53) with a second waist hole (51), a first guide pin (50) is provided on one side of the transmission plate (53), an arc-shaped hole (49) matching the first guide pin (50) is provided on the end surface of the shield (48), a rotating shaft (55) is provided at one end of the retaining frame (54), the rotating shaft (55) is rotatably connected to the shield (48), a second guide pin (52) passing through the second waist hole (51) is provided at the other end of the retaining frame (54), and pressure wheels (57) for pushing the handle are provided on both sides of the inner cavity of the retaining frame (54).

2. The modular low-voltage switchgear according to claim 1, characterized in that: The interlocking mechanism further comprises a first locking mechanism (17), wherein the first locking mechanism (17) is fixed to one end of the cover plate (19), the first operating handle (4) controls the latch assembly (16) via the first locking mechanism (17), and the second locking mechanism (20) is fixed to the other end of the cover plate (19).

3. The modular low-voltage switchgear according to claim 2, characterized in that: The latch assembly (16) comprises a transmission gear (27) mounted on the bottom of the cover plate (19); a second latch (25) pointing to the left side plate (10) and a first latch (22) pointing to the right side plate (15) are slidably mounted on the bottom of the cover plate (19); a first tooth groove (23) cooperating with the transmission gear (27) is provided on one side of the first latch (22); and a second tooth groove (24) cooperating with the transmission gear (27) is provided on one side of the second latch (25).

4. The modular low-voltage switchgear according to claim 3 is characterized in that: The first locking mechanism (17) comprises a rack (29), a first gear (30) and a second gear (33); a first bracket (28) and a second bracket (34) spaced apart from each other are fixed to one end of the top of the cover plate (19); the first gear (30) and the second gear (33) are meshed with each other and are both installed between the first bracket (28) and the second bracket (34); a rack (29) matching with the second gear (33) is fixed to one side of the first latch (22); and a first transmission shaft (18) fixedly connected to the first operating handle (4) is provided at one end of the first gear (30) facing the first bracket (28).

5. The modular low-voltage switchgear according to claim 4, characterized in that: A limiting plate (31) is provided at one end of the first gear (30) facing the second bracket (34), and two groups of limiting holes (32) are provided on the limiting plate (31). A bent plate (36) is provided on one side of the second bracket (34), and a guide column (35) is fixed to one end of the bent plate (36). A sliding lock head (38) is provided on the end of the guide column (35), and the lock head (38) passes through the guide hole (39) of the second bracket (34) and is embedded in one of the limiting holes (32) to achieve locking of the first gear (30). A spring (37) is provided on the guide column (35), and the spring (37) is pressed between the lock head (38) and the bent plate (36).

6. The modular low-voltage switchgear according to claim 4, characterized in that: The second locking mechanism (20) comprises a second transmission shaft (21), one end of the second transmission shaft (21) is fixedly connected to the second operating handle (6), the other end of the second transmission shaft (21) is connected to the manual operating mechanism (8), a vertical plate (43) is fixed to the top of the cover plate (19), one end of the vertical plate (43) is provided with a mounting hole (44), a column seat (42) is fixed to the shaft body of the second transmission shaft (21), the column seat (42) is rotatably connected to the mounting hole (44), a first transmission pin (41) is provided on one side of the column seat (42), a plug plate (40) is slidably connected to one side of the vertical plate (43), the top of the plug plate (40) is hooked and connected to the first transmission pin (41), the second plug pin (25) is provided with a first waist hole (26) matching the plug plate (40), and the cover plate (19) is provided with an avoidance hole facing the first waist hole (26).

7. The modular low-voltage switchgear according to claim 1, characterized in that: A fixing plate (63) is provided on one side of the partition plate (1), and a fixing socket (64) matching the inlet moving plug-in (11) is fixed to one end of the fixing plate (63).

8. The modular low-voltage switchgear according to claim 7, characterized in that: The inlet dynamic plug-in (11) comprises a dynamic seat body (72), the dynamic seat body (72) is provided with a plurality of plug-in parts, the front end of the plug-in part is provided with an intermediate plate (73), the end of the intermediate plate (73) is provided with two groups of buckles (71) distributed up and down, the inside of each plug-in part is provided with a wiring part, the wiring part is composed of a pair of touch plates (74) arranged on the upper and lower sides of the intermediate plate (73), the middle part of the touch plate (74) is provided with a card interface (76) matching the buckle (71), the two sides of the touch plate (74) are provided with wing edges (77), the inner wall of the plug-in part is provided with card grooves (75) matching the wing edges (77), the end of the touch plate (74) is divided into two groups of contact parts (78), and the end of the contact part (78) is provided with a contact head (79).

9. The modular low-voltage switchgear according to claim 8, characterized in that: The fixed socket (64) comprises a fixed seat body (65), a copper busbar (70) and a buckle plate (69); the buckle plate (69) is fixed to the rear end of the fixed seat body (65) to clamp the copper busbar (70); the front end of the fixed seat body (65) is provided with a docking portion corresponding to the plug-in portion; the other end of the fixed seat body (65) is provided with a plug hole (66) connected to the docking portion; one end of the copper busbar (70) extends into the docking portion through the plug hole (66); the docking portion is embedded in the plug-in portion; and two groups of contacts (79) at the end of the contact plate (74) clamp the copper busbar (70).

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