CN115117745A

CN115117745A - Interlocking mechanism and power distribution cabinet

Info

Publication number: CN115117745A
Application number: CN202210452917.XA
Authority: CN
Inventors: 韩文兵; 杨开勇; 何洪清
Original assignee: Mianyang Huahe Transmission And Distribution Equipment Research Institute; Sichuan Huahe Power Transmission And Transformation Engineering Co ltd; China Nuclear Electrical Co ltd
Current assignee: Mianyang Huahe Transmission And Distribution Equipment Research Institute; Sichuan Huahe Power Transmission And Transformation Engineering Co ltd; China Nuclear Electrical Co ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-09-27
Anticipated expiration: 2042-04-27
Also published as: CN115117745B

Abstract

The application provides an interlocking mechanism and switch board, interlocking mechanism includes: lock body and spring bolt. The lock body includes the mounting panel, and the front of mounting panel is equipped with the jam plate, and the push pedal is worn to be equipped with by the mounting panel hypomere, and the top of push pedal front end has the jacking inclined plane, and the back end top of push pedal is equipped with rotatable baffle, and the lockhole has been seted up to the upper segment of jam plate. The spring bolt moves along the direction of perpendicular to jam plate and sets up, and the upper segment of spring bolt front end has the slope that promotes, and the top surface of spring bolt has the draw-in groove, and the bottom has the step groove. The power distribution cabinet comprises a cabinet body and the interlocking mechanism, wherein the cabinet body is provided with an upper cabinet door and a lower cabinet door; the back surface of the mounting plate is mounted on the inner wall of the cabinet body, and the lock tongue is mounted on the inner side of the upper cabinet door; the rear section of the push plate penetrates through the cabinet body at a position corresponding to the lower cabinet door. Utilize interlocking device to control upper cabinet door and lower cabinet door interlock switch, have higher safety in utilization.

Description

Interlocking mechanism and power distribution cabinet

Technical Field

The invention belongs to the technical field of power distribution cabinets and lock catches, and particularly relates to an interlocking mechanism and a power distribution cabinet.

Background

The power distribution cabinet is mainly used for distributing and controlling circuits and plays a role in power utilization safety protection. In order to ensure the safety of installation, debugging, maintenance and use, the common power distribution cabinet respectively sets strong current and weak current in two independent cavities of the power distribution cabinet, and each cavity is provided with an independent cabinet door.

Daily maintenance only needs to open the cabinet door that weak current corresponds, and need not to open the forceful electric power cabinet door. The structure of current switch board setting up to upper and lower cabinet usually, goes up the cabinet and is used for the intercommunication forceful electric power, and lower cabinet is used for the intercommunication weak current, and the cabinet door of its upper cabinet and lower cabinet all can be opened alone, can not ensure when overhauing and maintaining the weak current that the upper cabinet is in the closed condition, can't hard realize closing the order of forceful electric power cabinet door earlier then closing the weak current cabinet door in addition, has very big potential safety hazard.

Disclosure of Invention

In order to solve the defects of the prior art, the invention provides the interlocking mechanism and the power distribution cabinet, the interlocking mechanism is used for controlling the interlocking switches of the upper cabinet door and the lower cabinet door, and the interlocking mechanism has higher use safety.

In order to realize the purpose of the invention, the following scheme is adopted:

an interlock mechanism, comprising: lock body and spring bolt.

The lock body comprises a mounting plate, a locking plate parallel to the mounting plate is arranged on the front face of the mounting plate, a push plate is perpendicularly arranged on the lower section of the mounting plate in a penetrating mode, a jacking inclined plane is arranged at the top of the front end of the push plate and used for pushing the locking plate to move along the length direction of the mounting plate, a rotatable baffle is arranged at the top of the rear section of the push plate, and a locking hole is formed in the upper section of the locking plate.

The spring bolt moves along the direction of perpendicular to jam plate and sets up, and the upper segment of spring bolt front end has the inclined plane that rises that pushes away for with the top surface contact of lockhole to promote the length direction removal of jam plate along the mounting panel, the top surface of spring bolt has the draw-in groove, and the spring bolt bottom has seted up the step groove corresponding the below of draw-in groove.

When the lock plate is at the lowest point, the front end of the push plate is positioned between the lock plate and the mounting plate; when the lock tongue is inserted into the preset position of the lock hole, the top surface is clamped in the clamping groove, and the bottom surface of the lock plate is higher than the bottom edge of the jacking inclined surface; when the push plate is pushed forward to a preset position, the lock plate is up to the highest point, and the bottom surface of the lock hole is clamped in the step groove.

Furthermore, guide rods are arranged below the front section of the push plate at intervals, the front end faces of the guide rods protrude out of the front end face of the push plate, the lower section of the front face of the mounting plate is parallel to and provided with a partition plate at intervals, the front section of the push plate and the guide rods penetrate through the partition plate, when the front end face of the push plate is positioned in the partition plate, the front ends of the guide rods protrude out of the partition plate, and the guide rods are used for supporting the bottom face of the locking plate at the lowest point; the outer side of the guide rod is sleeved with a pressure spring, the pressure spring is positioned between the partition plate and the mounting plate, and when the push plate moves towards the front, the root of the guide rod compresses the pressure spring towards the partition plate; the side wall of the push plate is provided with a stop pin in a penetrating manner, the stop pin is positioned between the mounting plate and the partition plate, and when the front end face of the push plate is positioned in the partition plate, the stop pin is in contact with the front face of the mounting plate.

Further, the middle section and the lower section of the lock plate are both provided with strip-shaped holes along the length direction, and the strip-shaped holes are both penetrated by limit screws which are used for installing the lock plate and guiding the lock plate; and a tension spring is arranged between the locking plate and the mounting plate, when the tension spring is in a natural state, the locking plate is in the lowest point position, and the push plate is withdrawn backwards to the maximum moving range.

Further, the top card of push pedal back end is equipped with the rectangular hole, and the rear end of baffle rotates and locates in the rectangular hole, and the front end of baffle is towards the front end of push pedal, when the baffle rotates predetermined angle downwards, can hide in the rectangular hole, is equipped with reset spring between baffle anterior segment bottom surface and the rectangular hole bottom surface, and when reset spring is the natural state of grabbing him more endurable, baffle protrusion in the top surface of push pedal, and the top surface of baffle is the tilt state.

A power distribution cabinet comprises a cabinet body and the interlocking mechanism, wherein the cabinet body is provided with an upper cabinet door and a lower cabinet door;

the back surface of the mounting plate is mounted on the inner wall of the cabinet body, the spring bolt is mounted on the inner side of the upper cabinet door, a through hole is formed in the position, corresponding to the spring bolt when the upper cabinet door is closed, of the cabinet body, when the upper cabinet door is closed, the spring bolt is inserted into the lock hole, and the top surface of the spring bolt is clamped in the clamping groove;

the cabinet body is passed to the position that the back end of push pedal corresponds lower cabinet door, and when the jam plate was in the extreme low position or the top surface card was located the draw-in groove, the baffle all was in the external side of cabinet, and the top surface of push pedal is stretched out to the epirelief, and when lower cabinet door was closed, the baffle was hidden in the push pedal downwards, and the jam plate rebound was to the peak this moment, and the bottom surface card was located the step inslot.

Further, the cabinet body is used for wearing to establish and leaves between the mounting hole top surface of push pedal and the top surface of push pedal and dodges the chamber, and lower cabinet door inboard is equipped with the ejector pin, and when lower cabinet door closed, the ejector pin promoted the baffle and rotates downwards to make the baffle hide in the push pedal, and the ejector pin inserts and dodges the intracavity.

Furthermore, a section of the avoiding cavity, which is positioned on the inner side of the cabinet body, is provided with a stop block, and when the front end of the stop plate is abutted against the stop block, the upper cabinet door is in an unlocking state.

Further, when closing down the cabinet door, the front end and the dog terminal surface laminating of ejector pin, and the bottom surface of ejector pin is less than the bottom surface of dog.

The invention has the beneficial effects that: utilize interlocking device to control the interlocking switch between last cabinet door and the lower cabinet door, make the switch board have higher safety in utilization. First towards insurance mode, when closing the cabinet door, need close earlier and go up the cabinet door, just can make down the cabinet door closure, accomplish then and go up the electricity. And can lock the cabinet door of going up when lower cabinet door is closed, under the condition of cabinet door under not opening, go up the cabinet door just can't open promptly. The second insurance mode, when the upper cabinet door is opened to needs, must open lower cabinet door at first, just can open the upper cabinet door, and the upper cabinet door can't directly open. The third kind of insurance mode, when only needing to open lower cabinet door, utilize lockhole bottom surface and draw-in groove cooperation, make and go up the cabinet door and do all can be in the lock state of dying to designed the baffle that prevents the mistake and touch, ensured under lower cabinet door open mode, unintended, just can't open and go up the cabinet door.

Drawings

The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure.

Fig. 1 shows an exploded view of the interlocking mechanism.

Fig. 2 shows an overall configuration diagram of the interlock mechanism.

Fig. 3 shows a front view of the interlocking mechanism.

Figure 4 shows a side view of the interlocking mechanism.

Fig. 5 is a side sectional view showing the interlock mechanism when the top surface of the lock hole is caught in the catch groove.

Fig. 6 shows an enlarged view at a in fig. 5.

Fig. 7 shows an enlarged view at B in fig. 5.

Fig. 8 is a partial sectional view showing the positional relationship between the push plate and the peripheral parts when the upper cabinet door is unlocked.

Fig. 9 is a partial cross-sectional view showing the positional relationship of the latch bolt and the lock hole when the upper cabinet door is unlocked.

Fig. 10 shows a partial cross-sectional view of the push plate in positional relationship to the peripheral components when the lower cabinet door is closed.

Fig. 11 shows a state diagram of the interlocking mechanism when both the upper cabinet door and the lower cabinet door are closed.

Fig. 12 shows an enlarged view at C in fig. 11.

Fig. 13 shows a schematic view of the installation structure of the interlocking mechanism on the power distribution cabinet.

Fig. 14 shows an enlarged view at D in fig. 13.

Fig. 15 shows a schematic structural diagram of the power distribution cabinet.

Fig. 16 shows an enlarged view at E in fig. 15.

The labels in the figure are: the lock comprises a lock body-10, a mounting plate-11, a transverse plate-111, a lock plate-12, a lock hole-121, a top surface-a, a bottom surface-b, a strip-shaped hole-122, a limit screw-123, a bending plate-124, a push plate-13, a jacking inclined surface-131, a guide rod-132, a pressure spring-133, a stop pin-134, a baffle-135, a rectangular hole-136, a reset spring-137, a partition-14, a tension spring-15, a bolt-20, a pushing inclined surface-21, a clamping groove-22, a step groove-23, a cabinet body-30, a through hole-301, an avoidance cavity-302, a stop block-303, an upper cabinet door-31, a lower cabinet door-32 and a push rod-321.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings, but the described embodiments of the present invention are a part of the embodiments of the present invention, not all of the embodiments of the present invention.

Example 1

As shown in fig. 1 to 4, an interlock mechanism includes: lock body 10 and locking bolt 20.

Specifically, as shown in fig. 1 to 5, the lock body 10 includes a mounting plate 11, and a back surface of the mounting plate 11 is used for connecting a cabinet body of the power distribution cabinet. The front of the mounting plate 11 is provided with a locking plate 12 parallel to the mounting plate 11, the lower section of the mounting plate 11 vertically penetrates through a push plate 13, and the top of the front end of the push plate 13 is provided with a jacking inclined surface 131 for pushing the locking plate 12 to move along the length direction of the mounting plate 11.

More specifically, as shown in fig. 7, a rotatable baffle 135 is disposed at the top of the rear section of the push plate 13, and the baffle 135 can be hidden in the solid body of the push plate 13 or can protrude from the top surface of the push plate 13. The top card of push pedal 13 back end is equipped with rectangular hole 136, and the rear end of baffle 135 rotates to be located in rectangular hole 136, and the front end of baffle 135 is towards the front end of push pedal 13 to baffle 135 can dodge automatically when push pedal 13 moves backward. As shown in fig. 10, when the baffle 135 rotates downward by a predetermined angle, it can be hidden in the rectangular hole 136, and a return spring 137 is disposed between the bottom surface of the front section of the baffle 135 and the bottom surface of the rectangular hole 136. As shown in fig. 7, 8 and 16, when the return spring 137 is in a state of naturally grasping the push plate, the flap 135 protrudes from the top surface of the push plate 13, and the top surface of the flap 135 is in an inclined state, so that the flap 135 can smoothly slide when the push plate 13 moves backward.

Specifically, the upper section of the lock plate 12 is provided with a lock hole 121, and the lock hole 121 is a rectangular hole structure.

Specifically, the latch tongue 20 is disposed to move in a direction perpendicular to the lock plate 12, and an upper section of a front end of the latch tongue 20 has a push-up inclined surface 21 for contacting with the top surface a of the lock hole 121 to push the lock plate 12 to move in a length direction of the mounting plate 11. The top surface of bolt 20 has draw-in groove 22, and bolt 20 bottom is equipped with step groove 23 corresponding to the below of draw-in groove 22. When the locking tongue 20 is separated from the lock body 10, as shown in fig. 3, in a projection view of the extending direction of the lock hole 121, the top surface a is located at the middle section of the push-up inclined surface 21, so that when the locking tongue 20 is inserted into the lock hole 121, the locking plate 12 is lifted up by the push-up inclined surface 21.

As shown in fig. 2, when the locking tongue 20 is inserted into the locking hole 121, the front end of the push plate 13 is located between the locking plate 12 and the mounting plate 11 when the locking plate 12 is at the lowest point. As shown in fig. 4 to 6, when the locking tongue 20 is inserted into the locking hole 121 at a predetermined position, the top surface a is engaged with the engaging groove 22. As shown in fig. 7, the bottom surface of the lock plate 12 is higher than the bottom edge of the lifting inclined surface 131 and lower than the top surface of the push plate 13. As shown in fig. 11, when the push plate 13 is pushed forward to a predetermined position, the locking plate 12 is at the highest point, the bottom surface of the locking plate 12 is supported on the top surface of the push plate 13, and the bottom surface b of the locking hole 121 is clamped in the stepped groove 23, and the top surface a is separated from the clamping groove 22.

Preferably, as shown in fig. 1 to 5, guide rods 132 are formed integrally below the front section of the push plate 13 at intervals, the front end surface of the guide rod 132 protrudes out of the front end surface of the push plate 13, the partition plates 14 are arranged in parallel and at intervals on the lower section of the front surface of the mounting plate 11, and both the front section of the push plate 13 and the guide rods 132 pass through the partition plates 14, so as to maintain the stability of the push plate 13 during movement and prevent the push plate 13 from deflecting.

Further preferably, as shown in fig. 2, when the front end surface of the push plate 13 is located inside the partition 14, the front end of the guide rod 132 protrudes out of the partition 14, and the guide rod 132 is used for supporting the bottom surface of the lock plate 12 when the push plate is at the lowest point, so as to act as a limit for the lowest position of the lock plate 12, thereby ensuring the relative position between the lock plate 12 and the lock tongue 20.

More preferably, as shown in fig. 4 and 5, a pressure spring 133 is sleeved outside the guide rod 132, and the pressure spring 133 is located between the partition 14 and the mounting plate 11, so that when the push plate 13 moves forward, the root of the guide rod 132 compresses the pressure spring 133 toward the partition 14. Therefore, when the push plate 13 loses the forward thrust, the push plate 13 can be rapidly ejected backwards through the pressure spring 133, the cabinet door can be ejected by using the elastic force, and the push plate 13 is rapidly retreated so that the lock plate 12 rapidly falls down, so that the top surface a is rapidly clamped into the clamping groove 22, and the bolt 20 is prevented from being separated from the lock hole 121 in the process of moving the lock plate 12 downwards.

More specifically, as shown in fig. 1 and 2, a stop pin 134 is formed on the side wall of the push plate 13 and is located between the mounting plate 11 and the partition 14, and when the front end surface of the push plate 13 is located in the partition 14, the stop pin 134 contacts the front surface of the mounting plate 11 to prevent the push plate 13 from moving out of the mounting plate 11 toward the rear end.

Preferably, as shown in fig. 1 to 3, strip-shaped holes 122 are formed in the middle section and the lower section of the locking plate 12 along the length direction, and limit screws 123 are inserted into the strip-shaped holes 122, and the limit screws 123 are used for installing the locking plate 12 and guiding the locking plate 12, so as to prevent the locking plate 12 from shifting. In this embodiment, the limit screw 123 corresponding to the lower strip-shaped hole 122 of the lock plate 12 is installed on the partition plate 14, and the limit screw 123 corresponding to the upper strip-shaped hole 122 of the lock plate 12 is connected to the installation plate 11.

Further preferably, as shown in fig. 1, 2, 4 and 5, a tension spring 15 is disposed between the locking plate 12 and the mounting plate 11, the front surface of the mounting plate 11 is provided with a vertical transverse plate 111, the middle section of the locking plate 12 is provided with a bending plate 124 corresponding to the transverse plate 111, the lower end of the tension spring 15 is connected to the transverse plate 111, the upper end of the tension spring 15 is connected to the bending plate 124, when the tension spring 15 is in a natural state, the locking plate 12 is at a lowest point position, and at this time, the push plate 13 is withdrawn backwards to a maximum moving range. Meanwhile, the tension spring 13 can be used for rapidly dropping the locking plate 12, and the tension spring 13 is matched with the pressure spring 133, so that the dropping speed of the locking plate 12 can be increased, the top surface a can be clamped into the clamping groove 22 more rapidly, and the bolt 20 is further prevented from being separated from the locking hole 121 in the process that the locking plate 12 moves downwards. After the latch tongue 20 is completely pulled out of the latch hole 121, the latch plate 12 can rapidly move downwards to the lowest point through the tension spring 13, so that the push plate 13 is blocked and the push plate 13 is prevented from moving forwards.

Example 2

As shown in fig. 13 to 16, a power distribution cabinet includes a cabinet 30 and the interlock mechanism described above.

Specifically, as shown in fig. 13 and 16, the cabinet 30 is provided with an upper cabinet door 31 and a lower cabinet door 32. Establish the high pressure at the internal of the cabinet that last cabinet door corresponds in this application, set up the low pressure at the internal of the cabinet that cabinet door corresponds down, when opening cabinet door down, the switch board will self-closing high pressure district's power.

Specifically, as shown in fig. 14, the back surface of mounting plate 11 is mounted on the inner wall of cabinet 30, and bolt 20 is mounted inside upper cabinet door 31 through the rear end. As shown in fig. 14 and 15, a through hole 301 is formed at a position of the cabinet 30 corresponding to the latch tongue 20 when the upper cabinet door 31 is closed. When the upper cabinet door 31 is closed, the latch bolt 20 is inserted into the lock hole 121 through the through hole 301, and the lock plate 12 is moved upward by sliding contact between the push-up inclined surface 21 and the top surface a, and the top surface a is clamped in the clamping groove 22, at this time, only the upper cabinet door 31 is in a locked state, and cannot be opened by directly pulling, and the lower cabinet door 32 is in an opened state.

Specifically, as shown in fig. 15 and 16, the rear section of the push plate 13 passes through the cabinet 30 at a position corresponding to the lower cabinet door 32. When the locking plate 12 is at the lowest position or the top surface a is clamped in the clamping groove 22, the rear section of the pushing plate 13 is located outside the cabinet 30, and the baffle 135 is also located outside the cabinet 30 and protrudes upward from the top surface of the pushing plate 13. Unable direct push pedal 13 that promotes in to the cabinet body 30 this moment to top surface a separates with draw-in groove 22 during preventing, in order to guarantee when opening cabinet door 32 and operate down, prevents to lead to push pedal 13 to the inboard promotion of the cabinet body 30 because of the mistake touching, and makes top surface a and draw-in groove 22 separate, leads to the unblock of last cabinet door 31 then. With this structure, it is ensured that the upper cabinet door 31 is in a locked state when the lower cabinet door 32 is opened. The push plate 13 can move forward only by pressing the baffle 135 into the push plate 13, so as to push the lock plate 12 to rise, thereby separating the top surface a from the slot 22, and making the upper cabinet door 31 in the unlocking state as shown in fig. 9, i.e. the projection of the lock tongue 20 along the length direction is just in the lock hole 121. When the lower cabinet door 32 is closed, the baffle 135 is hidden in the push plate 13 downward, the lower cabinet door 32 pushes the push plate 13 to move continuously toward the cabinet body 30, the jacking inclined surface 131 pushes the lock plate 12 upward, and when the rear end surface of the push plate 13 is flush with the surface of the cabinet body 30, as shown in fig. 11 and 12, the lock plate 12 moves upward to the highest point, and the bottom surface b is clamped in the step groove 23, so that the upper cabinet door 31 is continuously in a locked state. The lower cabinet door 32 is provided with an independent door lock for locking.

Preferably, as shown in fig. 15 and 16, an escape cavity 302 is left between the top surface of the installation hole of the cabinet 30 for penetrating the push plate 13 and the top surface of the push plate 13, and as shown in fig. 13 and 14, a top rod 321 is arranged inside the lower cabinet door 32. As shown in fig. 10, when the lower cabinet door 32 is closed, the push rod 321 pushes the baffle 135 to rotate downward, and the baffle 135 is hidden in the push plate 13, and the push rod 321 is inserted into the avoiding cavity 302, so that the baffle 135 is automatically hidden by the push rod 321, thereby avoiding being pressed by hands, and making the lower cabinet door 32 more convenient and smooth to close.

Preferably, as shown in fig. 8 and 10, a stopper 303 is disposed at a section inside the avoidance cavity 302 and located inside the cabinet 30, when the front end of the stopper 135 abuts against the stopper 303, the upper cabinet door 31 is in an unlocked state as shown in fig. 9, and the projection of the latch tongue 20 along the length direction is just located in the lock hole 121, so that the upper cabinet door 31 can be smoothly opened. The purpose of designing this structure lies in, even lower cabinet door 32 is in the open mode, goes up cabinet door 31 and is in the state of being locked by draw-in groove 22 anyhow, and design baffle 135 lies in preventing that the mistake from touching and leads to going up cabinet door 31 and open, when the operator is clear and the subjective consciousness on want to open last cabinet door 31, then need press baffle 135, then forward promotion push pedal 13, make and go up cabinet door 31 and be in the unblock state. The purpose of the design of the stop 303 in this embodiment is that it is inconvenient to accurately control the forward-pushing position and distance when pushing the push plate 13, and the unlocking position of the upper cabinet door 31 is not easy to control. After the stop 303 is provided, the unlocking position of the upper cabinet door 31 can be determined when the stop 135 abuts against the stop 303, so that blind operation can be realized, and an operator can quickly open the upper cabinet door 31.

Preferably, when closing the lower cabinet door 32, the front end of the top bar 321 is attached to the end surface of the stopper 303, and the bottom surface of the top bar 321 is lower than the bottom surface of the stopper 303, so that the baffle 135 can smoothly pass through the bottom surface of the stopper 303 in the process of moving the push plate 13 into the cabinet 30, and the stopper 303 is prevented from abutting against the baffle 135 when closing the lower cabinet door 32.

The foregoing is only a preferred embodiment of the present invention and is not intended to be exhaustive or to limit the invention. It will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention.

Claims

1. An interlock mechanism, comprising: a lock body (10) and a bolt (20);

the lock body (10) comprises a mounting plate (11), a locking plate (12) parallel to the mounting plate (11) is arranged on the front surface of the mounting plate (11), a push plate (13) vertically penetrates through the lower section of the mounting plate (11), a jacking inclined surface (131) is arranged at the top of the front end of the push plate (13) and used for pushing the locking plate (12) to move along the length direction of the mounting plate (11), a rotatable baffle plate (135) is arranged at the top of the rear section of the push plate (13), and a locking hole (121) is formed in the upper section of the locking plate (12);

the lock tongue (20) is movably arranged in the direction perpendicular to the lock plate (12), the upper section of the front end of the lock tongue (20) is provided with a push-up inclined surface (21) which is used for being in contact with the top surface (a) of the lock hole (121) to push the lock plate (12) to move along the length direction of the mounting plate (11), the top surface of the lock tongue (20) is provided with a clamping groove (22), and a step groove (23) is formed in the bottom of the lock tongue (20) corresponding to the lower part of the clamping groove (22);

when the lock plate (12) is at the lowest point, the front end of the push plate (13) is positioned between the lock plate (12) and the mounting plate (11); when the bolt (20) is inserted into the preset position of the lock hole (121), the top surface (a) is clamped in the clamping groove (22), and the bottom surface of the lock plate (12) is higher than the bottom edge of the jacking inclined surface (131); when the push plate (13) is pushed forwards to a preset position, the lock plate (12) is lifted to the highest point, and the bottom surface (b) of the lock hole (121) is clamped in the step groove (23).

2. An interlocking mechanism according to claim 1, characterized in that a guide rod (132) is arranged below the front section of the push plate (13) at an interval, the front end surface of the guide rod (132) protrudes out of the front end surface of the push plate (13), a partition plate (14) is arranged in parallel and at an interval on the lower section of the front surface of the mounting plate (11), the front section of the push plate (13) and the guide rod (132) both pass through the partition plate (14), when the front end surface of the push plate (13) is positioned in the partition plate (14), the front end of the guide rod (132) protrudes out of the partition plate (14), and the guide rod (132) is used for supporting the bottom surface of the locking plate (12) when the front end surface of the push plate (13) is at the lowest point; the pressure spring (133) is sleeved on the outer side of the guide rod (132), the pressure spring (133) is positioned between the partition plate (14) and the mounting plate (11), and when the push plate (13) moves towards the front, the root of the guide rod (132) compresses the pressure spring (133) towards the partition plate (14); the side wall of the push plate (13) is provided with a stop pin (134) in a penetrating way, the stop pin (134) is positioned between the mounting plate (11) and the partition plate (14), and when the front end face of the push plate (13) is positioned in the partition plate (14), the stop pin (134) is contacted with the front face of the mounting plate (11).

3. An interlocking mechanism according to claim 1, characterized in that the middle section and the lower section of the locking plate (12) are provided with strip-shaped holes (122) along the length direction, and the strip-shaped holes (122) are provided with limit screws (123) respectively, the limit screws (123) are used for installing the locking plate (12) and guiding the locking plate (12); a tension spring (15) is arranged between the locking plate (12) and the mounting plate (11), when the tension spring (15) is in a natural state, the locking plate (12) is in the lowest point position, and at the moment, the push plate (13) retreats backwards to the maximum moving range.

4. The interlocking mechanism according to claim 1, wherein a rectangular hole (136) is clamped at the top of the rear section of the push plate (13), the rear end of the baffle plate (135) is rotatably arranged in the rectangular hole (136), the front end of the baffle plate (135) faces the front end of the push plate (13), when the baffle plate (135) rotates downwards by a preset angle, the baffle plate can be hidden in the rectangular hole (136), a return spring (137) is arranged between the bottom surface of the front section of the baffle plate (135) and the bottom surface of the rectangular hole (136), when the return spring (137) is in a state of naturally grasping the finger to be more durable, the baffle plate (135) protrudes out of the top surface of the push plate (13), and the top surface of the baffle plate (135) is in an inclined state.

5. An electrical distribution cabinet, characterized by comprising a cabinet body (30) and an interlocking mechanism according to any one of claims 1 to 4, the cabinet body (30) being provided with an upper cabinet door (31) and a lower cabinet door (32);

the back surface of the mounting plate (11) is mounted on the inner wall of the cabinet body (30), the bolt (20) is mounted on the inner side of the upper cabinet door (31), and a through hole (301) is formed in the position, corresponding to the bolt (20), of the cabinet body (30) when the upper cabinet door (31) is closed;

the rear section of push pedal (13) corresponds the position of lower cabinet door (32) and passes cabinet body (30), and when jam plate (12) were in the extreme low position or top surface (a) card was located draw-in groove (22), baffle (135) all were in the cabinet body (30) outside, and raised upward and out in the top surface of push pedal (13), and when lower cabinet door (32) closed, jam plate (12) rebound to the peak, and bottom surface (b) card was located in step groove (23).

6. The power distribution cabinet according to claim 5, wherein an avoidance cavity (302) is reserved between the top surface of the mounting hole for penetrating the push plate (13) and the top surface of the push plate (13) in the cabinet body (30), a push rod (321) is arranged on the inner side of the lower cabinet door (32), when the lower cabinet door (32) is closed, the push rod (321) pushes the baffle plate (135) to rotate downwards, the baffle plate (135) is hidden in the push plate (13), and the push rod (321) is inserted into the avoidance cavity (302).

7. A power distribution cabinet according to claim 6, characterized in that a section of the inside of the avoidance cavity (302) which is located inside the cabinet body (30) is provided with a stop block (303), and when the front end of the stop block (135) abuts against the stop block (303), the upper cabinet door (31) is in an unlocked state.

8. A switch board according to claim 7, characterized in that when the lower door (32) is closed, the front end of the push rod (321) abuts against the end face of the stop block (303), and the bottom face of the push rod (321) is lower than the bottom face of the stop block (303).