CN111262166A - Drawer interlocking mechanism - Google Patents

Abstract

The application discloses a drawer interlocking mechanism, which comprises a base, a switching-on and switching-off interlocking mechanism and an unlocking mechanism, wherein the unlocking mechanism comprises an unlocking push rod; divide closing interlocking device includes: the closing support plate is provided with a vertical part, the middle part of the vertical part is provided with an avoiding opening, and the vertical part is erected on the unlocking push rod through the avoiding opening; the unlocking baffle is vertically arranged on the closing bracket plate in a sliding and sliding mode and is provided with a connecting part, a first locking part and a second locking part, wherein the first locking part and the second locking part extend downwards; divide-shut brake hook plate rotates and installs on vertical portion, and divide-shut brake hook plate has the handle hole that arc slide and confession square stick passed, connecting portion and arc slide sliding fit. The middle part of this application combined floodgate mounting panel erects on the unblock push rod for divide-shut brake interlocking device combines in an area with unlocking mechanism, and compact structure can effectively reduce the volume.

Description

Drawer Interlocking Mechanism

technical field

The invention relates to the field of electrical cabinets, in particular to a drawer interlocking mechanism.

Background technique

The withdrawable low-voltage power distribution cabinet (drawer-type electrical cabinet) has the advantages of saving space, reliable operation, convenient installation and maintenance, strong breaking capacity, and many outgoing circuits. It is widely used in power plants, substations, factories and mines, and high-rise buildings. in the power distribution system of the application. The main function of the power distribution cabinet is to convert, distribute and control the electrical energy of power distribution, motor control and lighting distribution equipment.

The drawer interlocking mechanism of the drawer-type electrical cabinet includes the opening and closing interlocking mechanism and the unlocking mechanism. The opening and closing interlocking mechanism and the unlocking mechanism are arranged in parallel, resulting in the overall inadequacy of the drawer interlocking mechanism and the large volume.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention proposes a drawer interlocking mechanism.

The technical scheme adopted by the present invention is as follows:

A drawer interlocking mechanism, comprising a base, an opening and closing interlocking mechanism and an unlocking mechanism installed on the base, the unlocking mechanism comprising:

a locking piece, which is slidably installed on the base, and the locking piece is used for cooperating with the external structure to lock or unlock the base;

a first spring, used for cooperating with the locking piece, so that the locking piece has a movement tendency to move downward;

The unlocking push rod is slidably installed on the base, the unlocking push rod has a matching part and a locking groove, the matching part is used to cooperate with the locking piece, and the unlocking push rod has a first working position and a second working position; the unlocking push rod is in the In the first working position, the lower end of the locking piece passes through the base, so that the base and the external structure are positioned; when the unlocking push rod is in the second working position, the unlocking push rod is pressed to move, and the matching portion drives the locking piece Moving up, the base is no longer positioned with the outer structure;

The second spring is used to cooperate with the unlocking push rod, and returns to the first working position when the unlocking push rod is not subjected to external force;

The opening and closing interlocking mechanism includes:

The closing bracket plate has a vertical part and a horizontal part located at the lower end of the vertical part, the horizontal part is fixed on the base, and the middle part of the vertical part has an escape opening, and the vertical part is erected through the escape opening on said unlocking push rod;

The unlocking baffle is slidably and vertically slidably arranged on the closing bracket plate, and the unlocking baffle has a connecting part, a first locking part extending downward for passing through the bottom plate, and a second locking part matched with the locking groove. Two locking parts, when the unlocking push rod is in the first working position, the locking groove corresponds to the second locking part and can be locked by the second locking part;

The opening and closing hook plate is rotatably installed on the vertical part, the opening and closing hook plate has an arc-shaped slideway and an operation hole for the square rod to pass through, and the connecting part is slidably matched with the arc-shaped slideway.

The middle part of the closing support plate is erected on the unlocking push rod, so that the opening and closing interlocking mechanism and the unlocking mechanism are combined in one area, the structure is compact, and the volume can be effectively reduced.

In the initial state, the unlocking push rod is in the first working position. At this time, the lower end of the locking piece passes through the base to cooperate with the external structure to limit the base. The lower end of the first locking portion of the unlocking baffle also passes through the base to cooperate with the external structure. The base is limited, and the second locking part is inserted into the locking groove, so that the unlocking push rod cannot be pressed; when the opening and closing hook plate is rotated, the unlocking baffle is moved upward, and the first locking part is separated from the external Structure, the second locking part is separated from the locking groove, at this time the unlocking push rod can be pressed, and when pressed, it can be switched from the first working position to the second working position.

The opening and closing interlocking mechanism of the present application has a simple structure. By rotating the opening and closing hook plate, the connecting part can be driven to move the unlocking baffle up and down, so that the first locking part and the second locking part can unlock or lock the hand. Shake the corresponding structure of the interlocking device.

In one embodiment of the present invention, the unlocking baffle plate has a plurality of vertical holes arranged vertically, and the opening and closing interlocking mechanism further includes a first screw, the first screw is screwed on the vertical part and is through the corresponding vertical holes.

In one embodiment of the present invention, the connecting portion has a threaded hole, and the opening and closing interlocking mechanism further includes a second screw, and the second screw passes through the arc-shaped slideway and is connected to the threaded hole of the connecting portion.

In one embodiment of the present invention, the horizontal portion has a limiting hole through which the first locking portion passes.

In one embodiment of the present invention, the second locking portion is a slot.

In one embodiment of the present invention, it further includes a multi-station bracket mounted on the base, and the multi-station bracket includes:

The frame body, which is a plastic part, has an installation hole for the electric operation position, the installation hole for the connection position and the installation hole for the test position, and the frame body has two installation cavities between the installation hole for the connection position and the installation hole for the test position;

a first micro switch, used for being installed in the installation hole of the electric operating position;

The second micro switch is used to install in the connection position mounting hole or the test position mounting hole;

The trigger assembly is installed in the installation cavity close to the second micro switch, and is used to cooperate with the second micro switch to trigger the second micro switch.

In one embodiment of the present invention, the triggering component includes:

a trigger rod, which is slidably installed in the installation cavity, the lower end of the trigger rod penetrates the frame body, and the upper end of the trigger rod is used to cooperate with the switch button of the corresponding micro switch;

The trigger spring is installed in the installation cavity and cooperates with the trigger rod, so that the trigger rod has a downward movement tendency.

In one embodiment of the present invention, the upper end of the trigger rod has an inclined surface, and the inclined surface is matched with the switch button corresponding to the micro switch.

Through the inclined plane, it can be better matched with the switch button of the micro switch.

In one embodiment of the present invention, a third micro switch is further included, and the second micro switch and the third micro switch are respectively installed in the connection position installation hole and the test position installation hole; the trigger assembly has two, respectively. Installed in two installation cavities, the two trigger assemblies are respectively matched with the second microswitch and the third microswitch to trigger the corresponding microswitches.

In one embodiment of the present invention, the unlocking push rod has a triggering portion, when the unlocking push rod is in the second working position, the unlocking push rod is pressed and moved, and the triggering portion is used to cooperate with the first micro switch to trigger the unlocking push rod. The first micro switch.

In one embodiment of the present invention, the frame body has three position marks, and the three position marks correspond to the installation hole of the electric operation position, the installation hole of the connection position and the installation hole of the test position respectively.

In one embodiment of the present invention, the frame body has two installation grooves, and the frame body further includes a clamping member clamped above the installation groove, and the clamping member has a hollow portion corresponding to the two installation grooves, respectively, The installation groove and the clip form two installation cavities; at least one hollow part has a blocking net.

When an installation cavity is idle, the blocking net can play a shielding role to prevent sundries from falling into the lower end of the frame body through the hollow. When the trigger components need to be installed in both installation cavities, because the frame body is a plastic part, at this time, the blocking net can be disconnected and separated from the hollow part by pressing hard.

In one embodiment of the present invention, it further includes an indicating component mounted on the base, the indicating component including:

The indicating arm, the middle part is installed on the base through the rotating shaft, one end of the indicating arm goes out of the base to have a pressure-receiving part, and the other end is the indicating end;

an indicator bracket, fixed on the indicator end, and the indicator bracket has a plurality of indicator marks;

The indicating torsion spring, installed on the base, is used to cooperate with the indicating crutch arm to reset the indicating crutch arm.

In one of the embodiments of the present invention, it further includes a positioning member for fixing on the partition board of the electrical cabinet, the positioning member has two trigger slots, and the two trigger slots correspond to the lower ends of the two installation cavities respectively. The trigger groove is provided with a trigger convex surface, and the trigger convex surface is used to cooperate with the trigger rod, so that the trigger rod can overcome the elastic force of the trigger spring to move upward, and the switch button of the micro switch is triggered;

The positioning member also has a pressing surface matched with the pressure-receiving portion, and the pressure-receiving portion is driven by the pressing surface to drive the instructing crank arm to rotate.

In one embodiment of the present invention, a pressure post is installed on the locking piece, and the matching portion is a driving surface. After the unlocking push rod is moved under pressure, the matching portion cooperates with the pressure receiving column to drive the locking piece to move upward. Through the cooperation between the driving surface and the pressure column, it is convenient to drive the locking piece to move upward after the unlocking push rod is pushed.

In one embodiment of the present invention, the base has an L-shaped plate, the L-shaped plate includes a vertical plate and a horizontal plate located at the upper end of the vertical plate, and the upper end of the locking piece is slidably arranged on the horizontal plate, so The first spring casing is on the upper part of the locking piece and the upper end abuts against the horizontal plate; the vertical plate has a bar-shaped vertical hole through which the end of the pressure-receiving column passes. The pressure column and the locking piece can be further limited by the vertical vertical holes, and the structure is more reliable during movement. The setting of the L-shaped plate is convenient for the reliable force of the locking piece.

In one embodiment of the present invention, the vertical plate has a bar-shaped vertical hole through which the end of the compression column passes. The pressure column and the locking piece can be further limited by the vertical vertical holes, and the structure is more reliable during movement.

In one embodiment of the present invention, the base has a vertical portion, one end of the unlocking push rod is slidably disposed on the vertical portion, the second spring sleeve is at one end of the unlocking push rod adjacent to the vertical portion, and the second One end of the spring is abutted against the vertical portion. The vertical part is arranged to facilitate the installation of the unlocking push rod and the second spring.

The beneficial effect of the invention is that the middle part of the closing support plate is erected on the unlocking push rod, so that the opening and closing interlocking mechanism and the unlocking mechanism are combined in one area, the structure is compact, and the volume can be effectively reduced.

Description of drawings:

Fig. 1 is the structural representation of drawer interlocking mechanism;

Fig. 2 is the schematic diagram of the drawer interlocking mechanism after removing the multi-station bracket;

3 is a schematic diagram of another angle after the drawer interlocking mechanism is removed from the multi-station bracket;

Fig. 4 is the schematic diagram of the positioning member;

Fig. 5 is the schematic diagram of the frame;

Fig. 6 is the schematic diagram of another angle of the frame body;

Fig. 7 is the schematic diagram of multi-station bracket;

Figure 8 is a top view of the multi-station bracket;

9 is a schematic view of another angle of the multi-station bracket;

Fig. 10 is the A-A sectional view of Fig. 8;

Figure 11 is a schematic diagram of a second microswitch and trigger assembly;

FIG. 12 is a schematic diagram of the drawer interlocking mechanism of Embodiment 2. FIG.

The reference numbers in the figure are:

1. Base; 2. Indicating component; 3. Opening and closing interlocking mechanism; 4. Multi-station bracket; 5. Unlocking mechanism; 6. Positioning piece; 7. Triggering slot; 8. Triggering convex surface; ; 10, rotating shaft; 11, pressure-receiving part; 12, indicating end; 13, avoidance port; 14, indicating bracket; 15, indicating sign; 16, indicating torsion spring; 17, closing bracket plate; 18, vertical part ; 19, horizontal part; 20, unlocking baffle; 21, first locking part; 22, second locking part; 23, opening and closing hook plate; 24, arc slide; 25, operating hole; 26, connecting part; 27, vertical hole; 28, first screw; 29, second screw; 31, locking piece; 32, first spring; 33, unlocking push rod; 34, locking groove; 35, second spring; 36, pressure column; 37, L-shaped plate; 38, vertical plate; 39, horizontal plate; 40, strip vertical hole; 41, vertical part; 42, pressure surface; 43, trigger part; 45, limit hole; 58, frame body; 59, installation hole for electric operation position; 60, installation hole for connection position; 61, installation hole for test position; 62, installation cavity; 63, first microswitch; 64, second microswitch; 65, trigger assembly; 66, trigger rod; 67, switch button; 68, trigger spring; 69, inclined plane; 72, position marking; 73, installation slot; 74, clip; 75, hollow part; 76, blocking net.

Detailed ways:

The present invention will be described in detail below with reference to the accompanying drawings.

Example 1

As shown in Figures 1, 2 and 3, a drawer interlocking mechanism includes a base 1, an opening and closing interlocking mechanism 3 and an unlocking mechanism 5 mounted on the base 1, and the unlocking mechanism 5 includes:

The locking piece 31 is slidably installed on the base 1, and the locking piece 31 is used to cooperate with the external structure to lock or unlock the base 1;

The first spring 32 is used to cooperate with the locking piece 31, so that the locking piece 31 has a movement tendency to move downward;

The unlocking push rod 33 is slidably installed on the base 1, the unlocking push rod 33 has a matching portion and a locking groove 34, the matching portion is used to cooperate with the locking piece 31, and the unlocking push rod 33 has a first working position and a second working position; When the unlocking push rod 33 is in the first working position, the lower end of the locking piece 31 passes through the base 1, so that the base 1 and the external structure are positioned; when the unlocking push rod 33 is at the second working position, the unlocking push rod 33 is pressed to move, and The part drives the locking piece 31 to move upward, and the base 1 is no longer positioned with the external structure;

The second spring 35 is used to cooperate with the unlocking push rod 33, and returns to the first working position when the unlocking push rod 33 is not subjected to external force;

The opening and closing interlocking mechanism 3 includes:

The closing bracket plate 17 has a vertical part 18 and a horizontal part 19 located at the lower end of the vertical part 18. The horizontal part 19 is fixed on the base 1, and the middle part of the vertical part 18 has an escape opening 13, and the vertical part 18 passes through the avoidance The mouth 13 is erected on the unlocking push rod 33;

The unlocking shutter 20 is slidably and vertically slidably arranged on the closing bracket plate 17 . The unlocking shutter 20 has a connecting portion 26 , a first locking portion 21 extending downward for passing through the bottom plate and matching with the locking groove 34 When the unlocking push rod 33 is in the first working position, the locking groove 34 corresponds to the second locking portion 22 and can be locked by the second locking portion 22;

The opening and closing hook plate 23 is rotatably installed on the vertical part 18 , the opening and closing hook plate 23 has an arc-shaped slideway 24 and an operation hole 25 for the square rod to pass through, and the connecting part 26 is slidingly matched with the arc-shaped slideway 24 .

The middle of the closing bracket plate 17 is erected on the unlocking push rod 33, so that the opening and closing interlocking mechanism 3 and the unlocking mechanism 5 are combined in one area, and the structure is compact and can effectively reduce the volume.

In the initial state, the unlocking push rod 33 is in the first working position. At this time, the lower end of the locking piece 31 penetrates out of the base 1 to cooperate with the external structure to limit the base 1, and the lower end of the first locking portion 21 of the unlocking shutter 20 also penetrates out. The base 1 cooperates with the external structure to limit the base 1, and the second locking portion 22 is inserted into the locking groove 34, so that the unlocking push rod 33 cannot be pressed; when the opening and closing hook plate 23 is operated to rotate, the unlocking block is driven. When the plate 20 moves up, the first locking portion 21 is separated from the external structure, and the second locking portion 22 is separated from the locking groove 34. At this time, the unlocking push rod 33 can be pressed, and when pressed, can be removed from the first working position. Switch to the second work position.

In this embodiment, the second locking portion 22 is a slot. The opening and closing interlocking mechanism 3 of the present application has a simple structure. By rotating the opening and closing hook plate 23, the connecting part 26 can be driven to move the unlocking baffle plate 20 up and down, so that the first locking part 21 and the second locking part can be moved up and down. 22 can unlock or lock the corresponding structure of the hand crank interlocking device.

As shown in FIGS. 1 , 2 and 3 , in this embodiment, the unlocking shutter 20 has a plurality of vertical holes 27 arranged vertically, and the opening and closing interlocking mechanism 3 further includes a first screw 28 . The first screw 28 It is screwed on the vertical part 18 and passes through the corresponding vertical hole 27 .

In this embodiment, the connecting portion 26 has a threaded hole, and the opening and closing interlocking mechanism 3 further includes a second screw 29 . The second screw 29 is connected to the threaded hole of the connecting portion 26 through the arc-shaped slideway 24 .

As shown in FIGS. 1 and 3 , in this embodiment, the horizontal portion 19 has a limiting hole 45 through which the first locking portion 21 passes.

As shown in Figures 1, 5, 6, 7, 8, 9, 10 and 11, in this embodiment, it also includes a multi-station bracket 4 mounted on the base 1, and the multi-station bracket 4 includes:

The frame body 58 is a plastic part, and has installation holes 59 at the electrical operation position, 60 at the connection position and 61 at the test position. The frame body 58 has two installation cavities between the installation holes 60 at the connection position and the installation holes 61 at the test position. 62;

The first micro switch 63 is used to be installed in the installation hole 59 of the electric operating position;

The second micro switch 64 is used to be installed in the connection position mounting hole 60 or the test position mounting hole 61;

The trigger assembly 65 is installed in the installation cavity 62 close to the second micro switch 64 and is used to cooperate with the second micro switch 64 to trigger the second micro switch 64 .

As shown in Figures 10 and 11, in this embodiment, the trigger assembly 65 includes:

The trigger rod 66 is slidably installed in the installation cavity 62, the lower end of the trigger rod 66 penetrates the frame body 58, and the upper end of the trigger rod 66 is used to cooperate with the switch button 67 of the corresponding micro switch;

The trigger spring 68 is installed in the installation cavity 62 and cooperates with the trigger rod 66 to make the trigger rod 66 have a downward movement tendency.

In this embodiment, the upper end of the trigger rod 66 has an inclined surface 69, and the inclined surface 69 is matched with the switch button 67 corresponding to the micro switch.

Through the inclined surface 69, the switch button 67 of the micro switch can be better matched.

In other embodiments, the multi-position bracket 4 further includes a third microswitch, at this time the second microswitch 64 and the third microswitch are installed in the connection position mounting hole 60 and the test position mounting hole 61 respectively; the trigger assembly There are two 65 , which are respectively installed in the two installation cavities 62 , and the two trigger assemblies 65 cooperate with the second microswitch 64 and the third microswitch respectively to trigger the corresponding microswitch.

As shown in FIG. 3 , in this embodiment, the unlocking push rod 33 has a trigger portion 43 . When the unlocking push rod 33 is in the second working position, the unlocking push rod 33 is pressed to move, and the trigger portion 43 is used for micro-moving with the first The switch 63 cooperates to trigger the first micro switch 63 .

As shown in FIG. 1 , in this embodiment, the frame body 58 has three position markers 72 , and the three position markers 72 correspond to the electrical operation position mounting holes 59 , the connection position mounting holes 60 and the test position mounting holes 61 respectively.

As shown in FIGS. 5 and 10 , in this embodiment, the frame body 58 has two installation grooves 73 , and the frame body 58 further includes a clamping member 74 clamped above the installation groove 73 . The hollow parts 75 corresponding to the grooves 73 , the installation grooves 73 and the clips 74 form two installation cavities 62 ; at least one hollow part 75 has a blocking net 76 .

When an installation cavity 62 is idle, the blocking net 76 can play a shielding role to prevent sundries from falling into the lower end of the frame body 58 through the hollow portion 75 . When the trigger assembly 65 needs to be installed in the two installation cavities 62 , because the frame body 58 is a plastic part, the blocking net 76 can be disconnected and separated from the hollow part 75 by pressing hard.

As shown in Figures 1, 2 and 3, in this embodiment, it also includes an indicator assembly 2 mounted on the base 1, and the indicator assembly 2 includes:

The indicating arm 9, the middle part is rotatably mounted on the base 1 through the rotating shaft 10, one end of the indicating arm 9 passes through the base 1 and has a pressure-receiving part 11, and the other end is the indicating end 12;

The indicating bracket 14 is fixed on the indicating end 12, and the indicating bracket 14 is provided with a plurality of indicating marks 15;

The indicating torsion spring 16 is installed on the base 1 and is used to cooperate with the indicating arm 9 to reset the indicating arm 9 .

As shown in FIG. 4 , in this embodiment, the drawer interlocking mechanism further includes a positioning member 6 for fixing on the partition board of the electrical cabinet. The positioning member 6 has two trigger slots 7 , which are respectively connected to the two trigger slots 7 . The lower ends of the mounting cavities 62 correspond to each other, and the trigger groove 7 has a trigger convex surface 8. The trigger convex surface 8 is used to cooperate with the trigger rod 66, so that the trigger rod 66 can overcome the elastic force of the trigger spring 68 to move upward, and the switch button 67 of the micro switch is triggered. ;

The positioning member 6 also has a pressing surface 42 that cooperates with the pressure receiving portion 11 , and the pressure receiving portion 11 is driven by the pressing surface 42 to drive the instructing arm 9 to rotate.

As shown in FIGS. 2 and 3 , in this embodiment, the locking piece 31 is provided with a pressure receiving column 36 , and the engaging portion is the driving surface. After the unlocking push rod 33 is moved under pressure, the engaging portion cooperates with the pressure receiving column 36 to drive the The locking piece 31 moves up. Through the cooperation between the driving surface and the pressure column 36, it is convenient to drive the locking piece 31 to move upward after the unlocking push rod 33 is pushed.

As shown in FIGS. 2 and 3 , in this embodiment, the base 1 has an L-shaped plate 37 . The L-shaped plate 37 includes a vertical plate 38 and a horizontal plate 39 located at the upper end of the vertical plate 38 . The upper end of the locking piece 31 is slidably arranged. On the horizontal plate 39 , the first spring 32 is sheathed on the upper part of the locking piece 31 and the upper end abuts against the horizontal plate 39 ; The pressure column 36 and the locking piece 31 can be further defined by the bar-shaped vertical hole 40, and the structure is more reliable during movement. The arrangement of the L-shaped plate 37 facilitates the reliable force-bearing of the locking piece 31 .

As shown in FIGS. 2 and 3 , in this embodiment, the vertical plate 38 has a bar-shaped vertical hole 40 through which the end of the compression column 36 passes. The pressure column 36 and the locking piece 31 can be further defined by the bar-shaped vertical hole 40, and the structure is more reliable during movement.

As shown in FIGS. 2 and 3 , in this embodiment, the base 1 has a vertical portion 41 , one end of the unlocking push rod 33 is slidably disposed on the vertical portion 41 , and the second spring 35 is sheathed on one end of the unlocking push rod 33 adjacent to the vertical portion 41 . , and one end of the second spring 35 is in contact with the vertical portion 41 . The vertical portion 41 is provided to facilitate the installation of the unlocking push rod 33 and the second spring 35 .

Example 2

As shown in Figure 12, it is another layout form of the drawer interlocking mechanism.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of patent protection of the present invention. Any equivalent structural transformation made by using the contents of the description and accompanying drawings of the present invention can be directly or indirectly used in other related technical fields. All are similarly included in the protection scope of the present invention.

Claims (10)

1. A drawer interlocking mechanism, characterized in that, comprising a base and an opening and closing interlocking mechanism and an unlocking mechanism installed on the base, the unlocking mechanism comprising: a locking piece, which is slidably installed on the base, and the locking piece is used for cooperating with the external structure to lock or unlock the base; a first spring, used for cooperating with the locking piece, so that the locking piece has a movement tendency to move downward; The unlocking push rod is slidably installed on the base, the unlocking push rod has a matching part and a locking groove, the matching part is used to cooperate with the locking piece, and the unlocking push rod has a first working position and a second working position; the unlocking push rod is in the In the first working position, the lower end of the locking piece passes through the base, so that the base and the external structure are positioned; when the unlocking push rod is in the second working position, the unlocking push rod is pressed to move, and the matching portion drives the locking piece Moving up, the base is no longer positioned with the outer structure; The second spring is used to cooperate with the unlocking push rod, and returns to the first working position when the unlocking push rod is not subjected to external force; The opening and closing interlocking mechanism includes: The closing bracket plate has a vertical part and a horizontal part located at the lower end of the vertical part, the horizontal part is fixed on the base, and the middle part of the vertical part has an escape opening, and the vertical part is erected through the escape opening on said unlocking push rod; The unlocking baffle is slidably and vertically slidably arranged on the closing bracket plate, and the unlocking baffle has a connecting part, a first locking part extending downward for passing through the bottom plate, and a second locking part matched with the locking groove. Two locking parts, when the unlocking push rod is in the first working position, the locking groove corresponds to the second locking part and can be locked by the second locking part; The opening and closing hook plate is rotatably installed on the vertical part, the opening and closing hook plate has an arc-shaped slideway and an operation hole for the square rod to pass through, and the connecting part is slidably matched with the arc-shaped slideway. 2. The drawer interlocking mechanism of claim 1, further comprising a multi-station bracket mounted on the base, the multi-station bracket comprising: The frame body, which is a plastic part, has an installation hole for the electric operation position, the installation hole for the connection position and the installation hole for the test position, and the frame body has two installation cavities between the installation hole for the connection position and the installation hole for the test position; a first micro switch, used for being installed in the installation hole of the electric operating position; The second micro switch is used to install in the connection position mounting hole or the test position mounting hole; The trigger assembly is installed in the installation cavity close to the second micro switch, and is used to cooperate with the second micro switch to trigger the second micro switch. 3. The drawer interlocking mechanism of claim 2, wherein the trigger assembly comprises: a trigger rod, which is slidably installed in the installation cavity, the lower end of the trigger rod penetrates the frame body, and the upper end of the trigger rod is used to cooperate with the switch button of the corresponding micro switch; The trigger spring is installed in the installation cavity and cooperates with the trigger rod, so that the trigger rod has a downward movement tendency. 4 . The drawer interlocking mechanism according to claim 2 , wherein the unlocking push rod has a trigger portion, and when the unlocking push rod is in the second working position, the unlocking push rod is pressed and moved, and the trigger portion is used for Cooperate with the first micro switch to trigger the first micro switch. 5. The drawer interlocking mechanism as claimed in claim 2, wherein the frame body has three position marks, and the three position marks are respectively corresponding to the installation holes of the electric operation position, the installation holes of the connection position and the installation holes of the test position; The frame body has two installation grooves, and the frame body further includes a clamp piece clamped above the installation groove, the clamp piece has hollow parts corresponding to the two installation grooves respectively, and the installation groove and the clamp piece form two parts. A mounting cavity; at least one hollow part has a blocking net. 6. The drawer interlocking mechanism of claim 2, further comprising an indicator assembly mounted on the base, the indicator assembly comprising: The indicating arm, the middle part is installed on the base through the rotating shaft, one end of the indicating arm goes out of the base to have a pressure-receiving part, and the other end is the indicating end; an indicator bracket, fixed on the indicator end, and the indicator bracket has a plurality of indicator marks; The indicating torsion spring, installed on the base, is used to cooperate with the indicating crutch arm to reset the indicating crutch arm. 7. The drawer interlocking mechanism according to claim 6, further comprising a positioning member for fixing on the partition board of the electrical cabinet, the positioning member has two trigger slots, the two trigger slots are respectively connected with the two trigger slots. The lower ends of the installation cavities correspond to each other, the trigger groove has a trigger convex surface, and the trigger convex surface is used to cooperate with the trigger rod, so that the trigger rod can overcome the elastic force of the trigger spring to move upward, and the switch button of the micro switch is triggered; The positioning member also has a pressing surface matched with the pressure-receiving portion, and the pressure-receiving portion is driven by the pressing surface to drive the instructing crank arm to rotate. 8 . The drawer interlocking mechanism according to claim 1 , wherein a pressure-receiving column is installed on the locking piece, and the matching portion is a driving surface. After the unlocking push rod is moved under pressure, the matching portion is connected to the receiving portion. 9 . The pressure column cooperates to drive the locking piece to move up. 9 . The drawer interlocking mechanism according to claim 8 , wherein the base has an L-shaped plate, the L-shaped plate comprises a vertical plate and a horizontal plate located at the upper end of the vertical plate, and the locking piece has an L-shaped plate. 10 . The upper end is slidably arranged on the horizontal plate, the first spring sleeve is on the upper part of the locking piece and the upper end is abutted against the horizontal plate; the vertical plate has a bar-shaped vertical hole through which the end of the compression column passes. 10 . The drawer interlocking mechanism according to claim 1 , wherein the base has a vertical portion, one end of the unlocking push rod is slidably disposed on the vertical portion, and the second spring jacket is positioned on the unlocking push rod. 11 . One end of the vertical portion is adjacent to, and one end of the second spring is abutted against the vertical portion.

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