An emergency power access box

Abstract

The application discloses an emergency power supply access box, which comprises a cabinet body, a cabinet door, a power supply input port, an isolation switch, a circuit breaker, a door lock mechanism, an operation shaft, a switch shaft and a mechanical linkage locking protection mechanism. The mechanical linkage locking protection mechanism comprises a main shaft, a driving gear and a driven gear. The driven gear comprises a first driven gear, a second driven gear and a third driven gear. When the main shaft drives the driving gear to rotate, the driving gear is sequentially meshed with the first driven gear, the second driven gear and the third driven gear and sequentially drives the first driven gear, the second driven gear and the third driven gear to rotate, so that the door lock mechanism, the operation shaft and the switch shaft are sequentially actuated. The above scheme can complete all opening and closing operations through only one rotating action, and the operation efficiency is high. Moreover, the opening and closing actions are strictly executed according to the sequence by the mechanical structure, the misoperation of the operator can be prevented, and the safety hidden danger can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of switch cabinet, in particular to an emergency power access box. BACKGROUND

[0002] The emergency power access box can be put into use in emergency, provide emergency power, and guarantee various social activities. At present, each switch of the existing emergency power access box is controlled separately, and many operation steps are required, which leads to long access time, and the circuit breaker can still be closed or opened after the cabinet door is opened, which brings safety hazards to the maintenance personnel. The plug connected to the input port of the power supply can also be separated from the power supply input port, which causes safety hazards in the use of the switch cabinet. SUMMARY

[0003] In order to overcome the defects of the prior art that the emergency power access box is controlled separately, the operation steps are many, the access time is long, and there is a certain safety hazard, the present application provides an emergency power access box, which can complete all opening and closing operations through only one rotating action, has high operation efficiency, and the opening and closing actions are strictly executed according to the sequence by the mechanical structure, which can prevent the misoperation of the operator and avoid safety hazards.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0005] An emergency power access box, comprising a cabinet body, a cabinet door, a power supply input port, a disconnecting switch, a circuit breaker, a door lock mechanism for locking the cabinet door, an operation shaft for controlling the opening and closing of the disconnecting switch, and a switch shaft for controlling the opening and closing of the circuit breaker, the power supply input port, the disconnecting switch and the circuit breaker being arranged in the cabinet body; further comprising a mechanical linkage locking protection mechanism, the mechanical linkage locking protection mechanism comprising a main shaft, a driving gear in transmission connection with the main shaft, and a driven gear in transmission connection with the driving gear, the driven gear comprising a first driven gear in transmission connection with the door lock mechanism, a second driven gear in transmission connection with the operation shaft, and a third driven gear in transmission connection with the switch shaft, when the main shaft drives the driving gear to rotate, the driving gear is in mesh with the first driven gear, the second driven gear and the third driven gear in sequence and drives the first driven gear, the second driven gear and the third driven gear to rotate in sequence, so that the door lock mechanism, the operation shaft and the switch shaft act in sequence.

[0006] The first driven gear rotates forward, and the second driven gear rotates forward, which drives the door lock mechanism to move forward and unlock the door lock mechanism. At this time, the door can be opened. Since the above actions are strictly executed in sequence by the mechanical structure, the isolating switch and the circuit breaker must be in the open state when the door can be opened, so as to prevent the operator from operating incorrectly and avoid safety hazards. When it is necessary to close the circuit breaker, the main shaft is rotated in the opposite direction, so that the driving gear is first meshed with the first driven gear and drives the first driven gear to rotate in the opposite direction. When the first driven gear rotates in the opposite direction, it drives the door lock mechanism to move in the opposite direction so that the door lock mechanism locks the cabinet door, so that the cabinet door cannot be opened. Then the main shaft is rotated in the opposite direction, so that the driving gear is disengaged from the first driven gear and meshed with the second driven gear. The main shaft drives the second driven gear to rotate in the opposite direction. When the second driven gear rotates in the opposite direction, it drives the operating shaft to rotate in the opposite direction to close the disconnector. Then the main shaft is rotated in the opposite direction, so that the driving gear is disengaged from the second driven gear and meshed with the third driven gear. The driving gear drives the third driven gear to rotate in the opposite direction. When the third driven gear rotates in the opposite direction, it drives the switch shaft to rotate in the opposite direction to close the circuit breaker, completing the closing operation. The mechanical structure ensures that the closing action is strictly executed in sequence to prevent the operator from operating incorrectly.

[0007] Preferably, the driving gear is an incomplete gear including a toothed segment and a toothless segment, and the first driven gear, the second driven gear and the third driven gear are arranged in sequence along the circumference of the main shaft. When the main shaft drives the driving gear to rotate, the toothed segment is engaged with the first driven gear, the second driven gear and the third driven gear in sequence and is engaged with at most one of them at the same time.

[0008] In the above technical solution, when the toothed segment of the driving gear meshes with the driven gear, the driving gear can drive the driven gear to rotate. When the toothed segment of the driving gear disengages the driven gear and the toothless segment aligns with the driven gear, the driving gear cannot drive the driven gear to rotate. This solution uses only one driving gear to drive three driven gears at different circumferential positions, resulting in a more compact and simple structure.

[0009] Preferably, the driving gear includes a first driving gear, a second driving gear and a third driving gear, and the first driving gear, the second driving gear and the third driving gear are all incomplete gears including tooth segments and toothless segments. The first driven gear is correspondingly arranged with the first driving gear and constitutes a first gear set, the second driven gear is correspondingly arranged with the second driving gear and constitutes a second gear set, and the third driven gear is correspondingly arranged with the third driving gear and constitutes a third gear set. When the main shaft drives the driving gear to rotate, the first gear set, the second gear set and the third gear set are meshed in sequence and at most only one set of gears is meshed at the same time.

[0010] In the above technical solution, the main shaft is at different angles, which allows the first, second, and third gear sets to engage independently and not simultaneously. In one gear set, when the toothed segment of the driving gear meshes with the driven gear, the driving gear can drive the driven gear to rotate. When the toothed segment of the driving gear disengages from the driven gear and the toothless segment aligns with the driven gear, the driving gear cannot drive the driven gear to rotate. The above solution uses multiple gear sets to control each mechanism separately, eliminating the need to arrange the three driven gears circumferentially, allowing for more flexible arrangement based on the space within the cabinet.

[0011] The cam is connected to the sliding plate by the spring, and the two ends of the spring are connected to the sliding plate and the cabinet body, so that one end of the sliding plate is pressed against the side wall of the cam. The cam includes a first contact surface and a second contact surface, and the distance from the first contact surface to the axis of the driving gear is greater than the distance from the second contact surface to the axis of the driving gear. When the toothed section of the driving gear is meshed with the driven gear, one end of the sliding plate is pressed against the first contact surface, and the locking toothed section disengages from the driven gear and unlocks the driven gear. When the toothed section of the driving gear is disengaged from the driven gear, one end of the sliding plate is pressed against the second contact surface, and the locking toothed section is meshed with the driven gear and locks the driven gear.

[0012] In the above technical solution, the locking mechanism can be used to lock any one of the first, second, and third driven gears, or multiple locking mechanisms can be configured, one for each of the first, second, and third driven gears. The locking mechanism can lock the driven gear when it is not meshing with the driving gear, thereby preventing the driven gear from rotating accidentally, such as when the driven gear is accidentally touched by an operator while the cabinet door is open. When the toothed segment of the driving gear meshes with the driven gear, one end of the sliding plate abuts against a first contact surface, which moves the locking toothed member away from the driven gear. The locking toothed member disengages from the driven gear and unlocks the driven gear, allowing the driving gear to drive the driven gear to rotate. When the toothed segment of the driving gear disengages from the driven gear, one end of the sliding plate abuts against a second contact surface, and the telescopic spring moves the locking toothed member toward the driven gear. The locking toothed member meshes with the driven gear and locks the driven gear, preventing the driven gear from rotating under the action of external forces.

[0013] Preferably, the cabinet is provided with a lock plate that can be raised and lowered relative to the cabinet, and the switch shaft drives the lock plate to rise and fall through a linkage mechanism. The lock plate is provided with a plurality of lock slots. When the switch shaft rotates to close the circuit breaker, the lock slot locks the plug inserted in the power input port.

[0014] In the above technical solution, when the switch shaft rotates, a linkage mechanism drives the lock plate to rise and fall synchronously. When the switch shaft rotates to close the circuit breaker, the linkage mechanism drives the lock plate to descend synchronously, allowing the plug to fall into the lock slot. The lock plate locks the plug and prevents the plug from being removed from the power input port. When the switch shaft rotates to open the circuit breaker, the linkage mechanism drives the lock plate to rise synchronously, allowing the plug to disengage from the lock slot, separating the lock plate from the plug, and allowing the plug to be removed from the power input port. The linkage mechanism includes a connecting rod, one end of which is eccentrically hinged to the switch shaft, and the other end of which is hinged to the lock plate. When the switch shaft rotates, it drives the connecting rod to move, thereby driving the lock plate to rise and fall.

[0015] Preferably, the main shaft is provided with a handle for facilitating the rotation of the main shaft, and the handle facilitates the operator to rotate the main shaft.

[0016] Preferably, a first limiter is fixed to the main shaft, and a second limiter is provided on the cabinet. When the door lock mechanism is locked, the isolating switch is closed, and the circuit breaker is closed, the first limiter and the second limiter abut against each other to limit further rotation of the main shaft. And / or when the circuit breaker is opened, the isolating switch is opened, and the door lock mechanism is unlocked, the first limiter and the second limiter abut against each other to limit further rotation of the main shaft. The first limiter and the second limiter can limit the extreme position of the main shaft.

[0017] Preferably, the door lock mechanism includes a connecting rod and a latch slidably connected to the cabinet body, a lock hole adapted for the latch is provided on the cabinet door, one end of the connecting rod is eccentrically hinged to the first driven gear, and the other end of the connecting rod is hinged to the latch.

[0018] In the above technical solution, when the first driven gear rotates, it drives the connecting rod to move, thereby driving the latch to move horizontally, so that the latch is inserted into the lock hole to enter a locked state, or the latch is disengaged from the lock hole to enter an unlocked state.

[0019] Preferably, the second driven gear is connected to the operating shaft via a belt transmission mechanism; or, the second driven gear is connected to the operating shaft via a gear transmission mechanism; or, the second driven gear is connected to the operating shaft via a chain transmission mechanism.

[0020] Preferably, the third driven gear is connected to the switch shaft via a belt transmission mechanism; or, the third driven gear is connected to the switch shaft via a gear transmission mechanism; or, the third driven gear is connected to the switch shaft via a chain transmission mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the emergency power supply access box of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the driving gear in the present invention;

[0023] Figure 3 It is a structural diagram of the door lock mechanism in the present invention;

[0024] Figure 4 It is a structural diagram of the linkage mechanism in the present invention;

[0025] Figure 5 It is a structural schematic diagram of the locking mechanism in the present invention.

[0026] In the figure: cabinet 1, disconnector 3, circuit breaker 4, door lock mechanism 5, connecting rod 5.1, latch 5.2, operating shaft 6, switch shaft 7, main shaft 8, driving gear 9, toothed segment 9.4, toothless segment 9.5, driven gear 10, first driven gear 10.1, second driven gear 10.2, third driven gear 10.3, power input port 11, lock plate 12, lock slot 12.1, linkage mechanism 13, connecting rod 13.1, handle 14, locking mechanism 15, locking gear 15.1, sliding plate 15.2, telescopic spring 15.3, cam 15.4, first contact surface 15.4.1, second contact surface 15.4.2. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1:

[0029] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, an emergency power access box includes a cabinet 1, a cabinet door, a power input port 11, an isolating switch 3, a circuit breaker 4, a door lock mechanism 5 for locking the cabinet door, an operating shaft 6 for controlling the opening and closing of the isolating switch 3, a switch shaft 7 for controlling the opening and closing of the circuit breaker 4, and a mechanical linkage locking protection mechanism. The power input port 11, the isolating switch 3, and the circuit breaker 4 are fixed in the cabinet 1, one side of the cabinet door is hinged to the cabinet 1, and the other side of the cabinet door is locked to the cabinet 1 through the door lock mechanism 5; the mechanical linkage locking protection mechanism includes a main shaft 8, a driving gear 9 coaxially fixed to the main shaft 8, and a driving gear 9 coaxially fixed to the driving gear. The driven gear 10 is connected to the wheel 9 in a transmission manner. The driven gear 10 includes a first driven gear 10.1 connected to the door lock mechanism 5, a second driven gear 10.2 connected to the operating shaft 6, and a third driven gear 10.3 connected to the switch shaft 7. When the main shaft 8 drives the driving gear 9 to rotate, the driving gear 9 meshes with the first driven gear 10.1, the second driven gear 10.2 and the third driven gear 10.3 in sequence and drives the first driven gear 10.1, the second driven gear 10.2 and the third driven gear 10.3 to rotate in sequence, so that the door lock mechanism 5, the operating shaft 6 and the switch shaft 7 are activated in sequence.

[0030] In the above technical solution, when the cabinet door is closed, part of the structure of the main shaft 8 passes through the cabinet body 1 or the cabinet door, making it easy to rotate the main shaft 8 from the outside through the operating member. When the cabinet door needs to be opened, the main shaft 8 is rotated forward, so that the driving gear 9 first meshes with the third driven gear 10.3 and drives the third driven gear 10.3 to rotate forward. When the third driven gear 10.3 rotates forward, it drives the switch shaft 7 to rotate forward and opens the circuit breaker 4. Then, the main shaft 8 is rotated forward again, so that the driving gear 9 disengages from the third driven gear 10.3 and meshes with the second driven gear 10.2. The main shaft 8 drives the second driven gear 10.2 to rotate forward. When the second driven gear 10.2 rotates forward, it drives the operating shaft 6 to rotate forward and opens the circuit breaker 4. The switch 3 is opened, and the main shaft 8 is then continued to rotate forward, so that the driving gear 9 disengages the second driven gear 10.2 and meshes with the first driven gear 10.1. The main shaft 8 drives the first driven gear 10.1 to rotate forward. When the first driven gear 10.1 rotates forward, it drives the door lock mechanism 5 to move forward and unlock the door lock mechanism 5. At this time, the cabinet door can be opened. Since the above actions are strictly executed in sequence by the mechanical structure, the disconnector 3 and the circuit breaker 4 must be in the open state when the cabinet door can be opened, so as to prevent the operator from operating it incorrectly and avoid safety hazards. When closing is required, the main shaft 8 is rotated in the opposite direction, so that the driving gear 9 first meshes with the first driven gear 10.1 and drives the first driven gear 10.1 to rotate in the opposite direction. When the first driven gear 10.1 rotates in the opposite direction, it drives the door lock mechanism 5 to move in the opposite direction, so that the door cannot be opened. Then, the main shaft 8 is rotated in the opposite direction, so that the driving gear 9 is disengaged from the first driven gear 10.1 and meshes with the second driven gear 10.2. The main shaft 8 drives the second driven gear 10.2 to rotate in the opposite direction. When the second driven gear 10.2 rotates in the opposite direction, it drives the operating shaft 6 to rotate in the opposite direction to close the disconnector 3. Then, the main shaft 8 is rotated in the opposite direction, so that the driving gear 9 is disengaged from the second driven gear 10.2 and meshes with the third driven gear 10.3. The driving gear 9 drives the third driven gear 10.3 to rotate in the opposite direction. When the third driven gear 10.3 rotates in the opposite direction, it drives the switch shaft 7 to rotate in the opposite direction to close the circuit breaker 4, completing the closing operation. The closing operation is ensured to be executed strictly in sequence by the mechanical structure, which can prevent operator error.

[0031] In the above technical solution, when the toothed segment 9.4 of the driving gear 9 meshes with the driven gear 10, the driving gear 9 can drive the driven gear 10 to rotate. When the toothed segment 9.4 of the driving gear 9 is disengaged from the driven gear 10 and the toothless segment 9.5 is aligned with the driven gear 10, the driving gear 9 cannot rotate the driven gear 10. The above solution uses only one driving gear 9 to drive three driven gears 10 at different circumferential positions, resulting in a more compact and simple structure.

[0032] In this embodiment, the cabinet body 1 is provided with a lock plate 12 that can be raised and lowered relative to the cabinet body 1. The switch shaft 7 drives the lock plate 12 to rise and fall through a linkage mechanism 13. The lock plate 12 is provided with a plurality of lock slots 12.1. When the switch shaft 7 rotates to close the circuit breaker 4, the lock slots 12.1 lock the plug inserted into the power input port 11.

[0033] In the above technical solution, when the switch shaft 7 rotates, the linkage mechanism 13 drives the lock plate 12 to rise and fall synchronously. When the switch shaft 7 rotates to close the circuit breaker 4, the linkage mechanism 13 drives the lock plate 12 to descend synchronously, allowing the plug to fall into the lock slot 12.1. The lock plate 12 locks the plug and prevents the plug from being removed from the power input port 11. When the switch shaft 7 rotates to open the circuit breaker 4, the linkage mechanism 13 drives the lock plate 12 to rise synchronously, allowing the plug to disengage from the lock slot 12.1, separating the lock plate 12 from the plug, and allowing the plug to be removed from the power input port 11. The linkage mechanism 13 includes a connecting rod 13.1, one end of which is eccentrically hinged to the switch shaft 7, and the other end of which is hinged to the lock plate 12. When the switch shaft 7 rotates, it drives the connecting rod 13.1 to move, thereby driving the lock plate 12 to rise and fall. The eccentric hinge connection between one end of the connecting rod 13 . 1 and the switch shaft 7 means that the hinge axis between the one end of the connecting rod 13 . 1 and the switch shaft 7 and the axis of the switch shaft 7 are eccentrically arranged.

[0034] Preferably, the main shaft 8 is provided with a handle 14 for conveniently rotating the main shaft 8. The handle 14 makes it convenient for the operator to rotate the main shaft 8.

[0035] Preferably, a first limiter is fixed to the main shaft 8, and a second limiter is provided on the cabinet 1. When the door lock mechanism 5 is locked, the disconnector 3 is closed, and the circuit breaker 4 is closed, the first limiter and the second limiter abut against each other to limit further rotation of the main shaft 8. When the circuit breaker 4 is opened, the disconnector 3 is opened, and the door lock mechanism 5 is unlocked, the first limiter and the second limiter abut against each other to limit further rotation of the main shaft 8. The first limiter and the second limiter can limit the extreme position of the main shaft 8.

[0036] Preferably, the door lock mechanism 5 includes a connecting rod 5.1 and a latch 5.2 slidably connected to the cabinet body 1, and a lock hole adapted to the latch 5.2 is provided on the cabinet door, one end of the connecting rod 5.1 is eccentrically hinged to the first driven gear 10.1, and the other end of the connecting rod 5.1 is hinged to the latch 5.2.

[0037] In the above technical solution, when the first driven gear 10.1 rotates, it drives the connecting rod 5.1 to move, thereby driving the latch pin 5.2 to move laterally, causing the latch pin 5.2 to be inserted into the keyhole to enter the locked state, or to be released from the keyhole to enter the unlocked state. The eccentric hinge connection between one end of the connecting rod 5.1 and the first driven gear 10.1 means that the hinge axis between the one end of the connecting rod 5.1 and the first driven gear 10.1 is eccentrically arranged with the axis of the first driven gear 10.1.

[0038] Preferably, the second driven gear 10.2 is connected to the operating shaft 6 via a belt transmission mechanism. It is understood that in another embodiment, the second driven gear is connected to the operating shaft via a gear transmission mechanism. It is understood that in another embodiment, the second driven gear is connected to the operating shaft via a chain transmission mechanism.

[0039] Preferably, the third driven gear 10.3 is connected to the switch shaft 7 via a belt drive mechanism. It is understood that in another embodiment, the third driven gear is connected to the switch shaft via a gear drive mechanism. It is understood that in another embodiment, the third driven gear is connected to the switch shaft via a chain drive mechanism.

[0040] Preferably, the first driven gear 10.1, the second driven gear 10.2 and the third driven gear 10.3 are all full-tooth gears. It is understood that in another embodiment, the first driven gear 10.1, the second driven gear 10.2 and the third driven gear 10.3 can also be incomplete gears.

[0041] It can be understood that in another embodiment, the driving gear 9 is connected to the main shaft 8 through a gear transmission mechanism.

[0042] It can be understood that in another embodiment, the driving gear 9 includes a first driving gear, a second driving gear and a third driving gear, and the first driving gear, the second driving gear and the third driving gear are all incomplete gears including a tooth segment 9.4 and a toothless segment 9.5. The first driven gear 10.1 is corresponding to the first driving gear and constitutes a first gear set, the second driven gear 10.2 is corresponding to the second driving gear and constitutes a second gear set, and the third driven gear 10.3 is corresponding to the third driving gear and constitutes a third gear set. When the main shaft 8 drives the driving gear 9 to rotate, the first gear set, the second gear set and the third gear set are engaged in sequence and at most only one set of gears is engaged at the same time.

[0043] In the above technical solution, the main shaft 8 is at different angles so that the first gear set, the second gear set, and the third gear set can be engaged separately and not simultaneously. In one gear set, when the toothed segment 9.4 of the driving gear 9 is engaged with the driven gear 10, the driving gear 9 can drive the driven gear 10 to rotate. When the toothed segment 9.4 of the driving gear 9 is disengaged from the driven gear 10 and the toothless segment 9.5 is aligned with the driven gear 10, the driving gear 9 cannot rotate and the driven gear 10 cannot be driven to rotate. The above solution controls each mechanism separately through multiple gear sets, and does not require the three driven gears 10 to be arranged circumferentially. It can be arranged more flexibly according to the space in the cabinet 1.

[0044] Example 2:

[0045] like Figure 5 As shown, on the basis of Example 1, the mechanical linkage locking protection mechanism further includes a locking mechanism 15, the locking mechanism 15 includes a locking tooth 15.1, a sliding plate 15.2, a telescopic spring 15.3 and a cam 15.4 fixed to the driving gear 9, the sliding plate 15.2 is slidably connected to the cabinet 1, the locking tooth 15.1 is adapted to the driven gear 10, the locking tooth 15.1 is slidably connected to the cabinet 1, the locking tooth 15.1 is fixed to the sliding plate 15.2, the two ends of the telescopic spring 15.3 are respectively connected to the cabinet 1 and the sliding plate 15.2, so that one end of the sliding plate 15.2 is pressed against the side wall of the cam 15.4, and the cam 15.4 includes a first contact The first contact surface 15.4.1 and the second contact surface 15.4.2 are greater than the distance between the first contact surface 15.4.1 and the axis of the driving gear 9. When the toothed segment 9.4 of the driving gear 9 is engaged with the driven gear 10, one end of the sliding plate 15.2 abuts against the first contact surface 15.4.1, the locking toothed member 15.1 disengages from the driven gear 10, and unlocks the driven gear 10. When the toothed segment 9.4 of the driving gear 9 is disengaged from the driven gear 10, one end of the sliding plate 15.2 abuts against the second contact surface 15.4.2, the locking toothed member 15.1 engages with the driven gear 10, and locks the driven gear 10. The first contact surface 15.4.1 and the second contact surface 15.4.2 have a smooth transition.

[0046] In the above technical solution, the locking mechanism 15 can be used to lock any one of the first driven gear 10.1, the second driven gear 10.2, and the third driven gear 10.3. Alternatively, multiple locking mechanisms 15 can be provided, each for locking the first driven gear 10.1, the second driven gear 10.2, and the third driven gear 10.3. The locking mechanism 15 can lock the driven gear 10 when the driven gear 10 is not engaged with the driving gear 9, thereby preventing the driven gear 10 from accidentally rotating, such as when the driven gear 10 is accidentally touched by an operator while the cabinet door is open. When the toothed segment 9.4 of the driving gear 9 meshes with the driven gear 10, one end of the sliding plate 15.2 abuts against the first contact surface 15.4.1, and the first contact surface 15.4.1 moves the locking toothed member 15.1 away from the driven gear 10, and the locking toothed member 15.1 disengages from the driven gear 10 and unlocks the driven gear 10, so that the driving gear 9 can drive the driven gear 10 to rotate. When the toothed segment 9.4 of the driving gear 9 disengages from the driven gear 10, one end of the sliding plate 15.2 abuts against the second contact surface 15.4.2, and the telescopic spring 15.3 moves the locking toothed member 15.1 toward the driven gear 10, and the locking toothed member 15.1 meshes with the driven gear 10 and locks the driven gear 10, so that the driven gear 10 cannot rotate under the action of external force.

[0047] Preferably, a pressing member may be provided on the side of the sliding plate 15.2 pressing against the cam 15.4, and the sliding plate 15.2 presses against the cam 15.4 through the pressing member.

Claims

1. An emergency power access box, comprising a cabinet, a cabinet door, a power input port, an isolating switch, a circuit breaker, a door lock mechanism for locking the cabinet door, an operating shaft for controlling the opening and closing of the isolating switch, and a switch shaft for controlling the opening and closing of the circuit breaker, wherein the power input port, isolating switch, and circuit breaker are arranged in the cabinet; wherein: The invention also includes a mechanical linkage locking protection mechanism, which includes a main shaft, a driving gear connected to the main shaft, and a driven gear connected to the driving gear. The driven gear includes a first driven gear connected to the door lock mechanism, a second driven gear connected to the operating shaft, and a third driven gear connected to the switch shaft. When the main shaft drives the driving gear to rotate, the driving gear meshes with the first driven gear, the second driven gear, and the third driven gear in sequence and drives the first driven gear, the second driven gear, and the third driven gear to rotate in sequence, so that the door lock mechanism, the operating shaft, and the switch shaft are activated in sequence. The driving gear is an incomplete gear including a toothed segment and a toothless segment. The first driven gear, the second driven gear, and the third driven gear are sequentially arranged along the circumference of the main shaft. When the main shaft drives the driving gear to rotate, the toothed segment meshes with the first driven gear, the second driven gear, and the third driven gear in sequence and meshes with at most one of them at a time. The cam is connected to the sliding plate and the sliding plate is fixed to the sliding plate, and the two ends of the elastic spring are respectively connected to the cabinet and the sliding plate, so that one end of the sliding plate is pressed against the side wall of the cam, and the cam includes a first contact surface and a second contact surface, and the distance from the first contact surface to the axis of the driving gear is greater than the distance from the second contact surface to the axis of the driving gear. When the toothed segment of the driving gear is meshed with the driven gear, one end of the sliding plate is pressed against the first contact surface, and the locking toothed segment disengages from the driven gear and unlocks the driven gear. When the toothed segment of the driving gear is disengaged from the driven gear, one end of the sliding plate is pressed against the second contact surface, and the locking toothed segment is meshed with the driven gear and locks the driven gear.

2. An emergency power supply access box according to claim 1, characterized in that: The driving gear includes a first driving gear, a second driving gear and a third driving gear. The first driving gear, the second driving gear and the third driving gear are all incomplete gears including tooth segments and toothless segments. The first driven gear is correspondingly arranged with the first driving gear and constitutes a first gear set. The second driven gear is correspondingly arranged with the second driving gear and constitutes a second gear set. The third driven gear is correspondingly arranged with the third driving gear and constitutes a third gear set. When the main shaft drives the driving gear to rotate, the first gear set, the second gear set and the third gear set are meshed in sequence and at most only one gear set is meshed at the same time.

3. An emergency power supply access box according to claim 1 or 2, characterized in that: The cabinet body is provided with a lock plate that can be raised and lowered relative to the cabinet body. The switch shaft drives the lock plate to rise and fall through a linkage mechanism. The lock plate is provided with a plurality of lock slots. When the switch shaft rotates to close the circuit breaker, the lock slots lock the plug inserted in the power input port.

4. An emergency power supply access box according to claim 1 or 2, characterized in that: The main shaft is provided with a handle for facilitating the rotation of the main shaft.

5. An emergency power supply access box according to claim 1 or 2, characterized in that: A first limit member is fixed on the main shaft, and a second limit member is provided on the cabinet. When the door lock mechanism is locked, the isolating switch is closed, and the circuit breaker is closed, the first limit member and the second limit member are pressed against each other to limit the main shaft from continuing to rotate; and / or when the circuit breaker is opened, the isolating switch is opened, and the door lock mechanism is unlocked, the first limit member and the second limit member are pressed against each other to limit the main shaft from continuing to rotate.

6. An emergency power supply access box according to claim 1 or 2, characterized in that: The door lock mechanism includes a connecting rod and a latch slidably connected to the cabinet body. The cabinet door is provided with a lock hole adapted to the latch. One end of the connecting rod is eccentrically hinged to the first driven gear, and the other end of the connecting rod is hinged to the latch.

7. An emergency power supply access box according to claim 1 or 2, characterized in that: The second driven gear is connected to the operating shaft via a belt transmission mechanism; or, the second driven gear is connected to the operating shaft via a gear transmission mechanism; or, the second driven gear is connected to the operating shaft via a chain transmission mechanism.

8. An emergency power supply access box according to claim 1 or 2, characterized in that: The third driven gear is connected to the switch shaft via a belt transmission mechanism; or, the third driven gear is connected to the switch shaft via a gear transmission mechanism; or, the third driven gear is connected to the switch shaft via a chain transmission mechanism.

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