CN111800972A - Electric and mechanical interlocking device - Google Patents

Abstract

An electric and mechanical interlocking device comprises an electromagnet, a bottom plate, a movable plate, a handle plate and a linkage plate; the front end of the bottom plate is provided with a fixed plate, one end of the fixed plate is provided with a through hole, and the side part of the through hole is provided with a guide rod; the movable plate is provided with a plurality of guide grooves, and a limiting rod is arranged on one inner side of one guide groove; the movable plate is arranged at the rear part of one end of the fixed plate and positioned at the front side of the fixed plate, and the armature rod of the electromagnet is positioned in the other side of one guide groove of the movable plate; a through hole is arranged at the rear end of the armature rod of the electromagnet, and a clamping groove is arranged at the front part of the through hole; the upper part of the bottom plate is provided with a shaft lever, and a shaft hole in the middle of the linkage plate is sleeved outside the shaft lever; the handle plate is provided with a shaft hole, and the shaft hole of the handle plate is hinged with one side of the linkage plate; the fixed plate is arranged on one side in the electric control cabinet, and the front end of the handle plate is positioned on the outer side of the electric control cabinet. The invention prevents the electric shock risk brought to the related personnel by the live operation, and is more convenient to use without adopting a key switch. Based on the above, the invention has good application prospect.

Description

An electrical and mechanical interlocking device

technical field

The invention relates to the technical field of electrical control cabinet matching equipment, in particular to an electrical and mechanical interlocking device.

Background technique

The electrical control cabinet is a kind of equipment widely used in the field of electricity consumption and power supply. Various control switches, circuit breakers, electrical monitoring equipment, etc. are installed inside it. In order to facilitate the operation of the electrical equipment in the electrical control cabinet and read the data displayed by the relevant monitoring equipment, the electrical control cabinet is equipped with a movable door. In order to prevent unrelated personnel from opening the movable door, the existing electrical control cabinets are equipped with various locks.

At present, the locks used in electrical control cabinets are generally mechanical locks such as padlocks and dark locks. Although they can prevent keyless personnel from opening the movable door, when the relevant personnel do not turn off the main gate switch that inputs power to the electrical control cabinet (The main gate is located outside the electrical control cabinet), and the relevant personnel operate the electrical equipment in the electrical control cabinet, which may lead to electric shock accidents (such as electric shock accidents caused by electrical leakage of electrical components in the electrical control cabinet, related personnel touching the cabinet body, or operation The electrical components inside the cabinet, the arcing of the electrical components causes electric shock to the relevant personnel, etc.), there are certain safety hazards. Based on the above, it is particularly necessary to provide a more secure electrical and mechanical interlocking device that can not open the cabinet door when the main gate is not powered off, and can only open the cabinet door after the main gate is powered off.

SUMMARY OF THE INVENTION

In order to overcome the limitation of the structure of the existing electrical control cabinet, the adopted lock cannot prevent the relevant personnel from opening the cabinet door under the condition of electrification inside the cabinet, thus there is a certain safety hazard. In the application, as long as the power input to the electrical control cabinet is not disconnected, the relevant personnel cannot open the cabinet door, and the cabinet door can only be opened after the power is cut off, which effectively prevents the risk of electric shock caused by the live operation to the relevant personnel, and does not use a key Switching the cabinet door (there are certain disadvantages in using the key, the key needs to be carried by the relevant personnel, which will bring certain inconvenience to the relevant personnel), an electrical and mechanical interlocking device that is more convenient to use.

The technical scheme adopted by the present invention to solve its technical problems is:

An electrical and mechanical interlocking device includes an electromagnet, and is characterized in that it also has a bottom plate, a movable plate, a handle plate, and a linkage plate; the front end of the bottom plate is provided with a fixed plate, and one end of the fixed plate is provided with a through hole and a side portion of the through hole. There is a guide rod; the movable plate has a plurality of guide grooves, and the inner side of one of the guide grooves has a limit rod; the electromagnet is installed at the rear of one end of the fixed plate, and its armature rod is located in the through hole of the fixed plate; The movable plate is located on the front side of the fixed plate, the armature rod of the electromagnet is located in the other side of one of the guide grooves of the movable plate, and the guide rod of the fixed plate is located in the grooves of the remaining guide grooves of the movable plate; the rear end of the armature rod of the electromagnet There is a through hole, and the front part of the through hole has a slot; the upper part of the bottom plate has a shaft rod, and the shaft hole in the middle of the linkage plate is sleeved on the outside of the shaft rod; the handle plate has a shaft hole, and the shaft hole of the handle plate is hinged with one side of the linkage plate Installed together, there is a rear support plate on the rear side of the bottom plate, a rear through hole in the middle of the rear support plate, a spring on the rear side of the handle plate, and the rear end of the handle plate is located in the rear through hole; The front of the handle board is located outside the front side of the fixed board; the fixed board is installed on one side of the electrical control cabinet, and the front end of the handle board is located on the outside of the electrical control cabinet.

Further, the inner diameter of the through hole at one end of the fixing plate is larger than the outer diameter of the armature rod.

Further, the movable plate can move laterally along the fixed plate.

Further, the outer diameter of the limit rod of one of the guide grooves of the movable plate is smaller than the through hole of the armature rod of the electromagnet and the inner diameter of the clamping groove.

The beneficial effects of the present invention are: when the present invention is installed, the lower end of the bottom plate is connected to a support plate through a screw nut, the front end of the support plate is installed at a fixed position on one side of the movable door in the electrical control cabinet through the screw nut, and the front end of the movable plate and the inner side of the cabinet door are spaced at a certain distance . In the application, when the electromagnet is not de-energized, the electromagnet pulls in, the limit rod of the movable plate and the rectangular slot at the front end of the armature rod are in a horizontal line, and the interval is a very small distance of 1mm, so that even if someone pushes the handle plate backward, The movable panel will not move to the right, so the cabinet door will not be opened. After the electromagnet loses power, the armature rod moves toward the front end, and the limit rod of the movable plate and the rear through hole of the armature rod of the electromagnet are in a straight line, so that after the operator pushes the handle plate backward, the front left side of the linkage plate will push the movable plate Move to the right, the lower right end of the movable plate is separated from the "U"-shaped card slot on the side of the cabinet, and the operator can open the cabinet door. In the present invention, as long as the power input into the electrical control cabinet is not disconnected, the relevant personnel cannot open the cabinet door, and the cabinet door can only be opened after the power is cut off, which effectively prevents the electric shock risk brought by the live operation to the relevant personnel, and does not use a key switch cabinet. The door (there are certain disadvantages in using the key, the key needs to be carried by the relevant personnel, which will bring certain inconvenience to the relevant personnel), which is more convenient to use. Based on the above, the present invention has a good application prospect.

Description of drawings

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

FIG. 1 is a schematic diagram of the front view structure of the present invention.

FIG. 2 is a schematic top view of the structure of the present invention.

Figure 3 is a schematic side view of the structure of the present invention.

FIG. 4 is a schematic diagram of a partially enlarged structure of the present invention.

Detailed ways

As shown in Figures 1, 2, 3, and 4, an electrical and mechanical interlocking device includes an electromagnet 1, the two ends of the power input of the electromagnet 1 and the two ends of the power output of the circuit breaker in the electrical control cabinet (380V three-phase four One of the phase lines and the neutral line of the line power supply is connected by wires; it also has a bottom plate 2, a rectangular movable plate 3, a handle plate 4, and a linkage plate 5; The plate 21, the left end of the fixed plate 21 has a through hole 211, and the fixed plate 21 is located on the right side of the through hole and has two cylindrical guide rods 212 longitudinally and longitudinally distributed at a certain distance; the left end of the movable plate 3 reaches the front middle part There are three laterally distributed guide grooves 31 at a certain distance in the lateral direction, and there is a rectangular limit rod 311 in the middle of the inner left side of the leftmost guide groove 31. The length of the limit rod 311 is the inner lateral direction of the guide groove 31. The length of the electromagnet 1 is more than half; the electromagnet 1 is longitudinally distributed and installed in the middle of the left side of the fixed plate 21 through the screw nut, and the rear part of the armature rod 101 is located in the left through hole 211 of the fixed plate; the movable plate 3 is horizontally located in the fixed plate 21 On the front side, the front part of the armature rod 101 of the electromagnet is located in the right end of the guide groove 31 at the leftmost end of the movable plate. The front ends of the rods 212 each have a circular limit plate 312. The outer diameter of the limit plates 312 is larger than the inner diameter of the guide grooves 31 at the left and right ends and the middle of the movable plate. The front and outer sides of the fixed plate 21 are in contact with the rear side of the movable plate; the electromagnet The armature rod 101 has a horizontal through hole 102 in the middle of the rear end, the left side (semi-circle) of the armature rod at the front of the through hole 102 has a longitudinally distributed rectangular slot 103, the rear end of the slot 103 and the left end of the through hole 102 pass through , when the electromagnet 1 loses power, the inner left limit rod of the guide groove 31 at the leftmost end of the movable plate is located on the left side of the through hole 102 in a straight line; the middle of the bottom plate 2 is vertically distributed and welded with a shaft rod 213, The linkage plate 5 is of the "┍" type. There is a shaft hole in the middle of the linkage plate 5. The shaft hole in the middle of the linkage plate 5 is sleeved on the outside of the shaft rod 213. The shaft rod 213 has a fixed plate with an outer diameter larger than the inner diameter of the shaft hole; the handle plate There is a shaft hole in the middle of 4. The shaft hole of the handle plate 4 and the right shaft hole of the linkage plate 5 are hingedly installed together. There is a rear support plate 23 vertically distributed and integrally formed with the base plate on the right rear side of the base plate 2. The rear support plate There is a rectangular rear through hole 231 in the middle of 23, the rear side of the handle plate 4 has a rear rod 41 which is integrally formed and whose outer diameter is smaller than the inner diameter of the rear through hole of the rear support plate. is located in the rear through hole 231; the lower front right end of the fixing plate 21 has a rectangular opening 214 with a certain length (4cm) in the transverse direction, the left front side of the linkage plate 5 and the middle part of the handle plate 4 are located in the opening 214, and the left front side of the linkage plate 5 is located in the opening 214. A part of the front end, the front end of the handle plate 4 is located outside the front side of the fixed plate, and the lower middle part of the front side of the movable plate 3 has a first bayonet 313 whose lateral width is slightly larger than the width of the left front end of the linkage plate 5 (the left front end of the linkage plate is located in the bayonet), and the movable front center to There is a "Π" type opening 314 with a certain length (6cm) in the lower part of the right end, and the middle part of the handle plate 4 is located between the upper end of the bottom plate 2 and the lower end of the opening 314; the fixed plate 21 is installed on the movable door 1 in the electrical control cabinet through the screw nut. Side fixed position, the matching "U"-shaped card slot 7 of the electrical control cabinet is installed in the fixed position on one side of the cabinet through the screw nut. When the cabinet door is closed, the lower right side 315 of the movable panel 3 (the downward height is higher than the movable panel) The opening 314 is located in the card slot 7, when the cabinet door is opened, the opening 314 of the movable plate is located above and outside the card slot 7 (the downward protruding part 315 on the lower right side of the movable plate plays a locking role), and the front end of the handle plate 4 It is located outside the opening at the front end of the movable door.

As shown in FIGS. 1 , 2 , 3 and 4 , the inner diameter of the left through hole 211 of the fixing plate is larger than the outer diameter of the armature rod 101 . The movable plate 3 can move laterally left and right along the guide rod 212 of the fixed plate through the guide groove 31 . The outer diameter of the inner left limit rod 311 of the guide slot at the leftmost end of the movable plate is smaller than the inner diameter of the through hole 102 and the inner diameter of the rectangular slot 103 at the rear end of the armature rod of the electromagnet. The thickness of the handle plate 4 is smaller than the upper and lower spacing of the lower right end opening 314 of the fixing plate.

As shown in Figures 1, 2, 3, and 4, when the present invention is installed, the lower end of the bottom plate 2 is connected to a support plate through a screw nut, and the support plate is installed at a fixed position on one side of the movable door in the electrical control cabinet through the screw nut. The inner side of the cabinet door is separated by a certain distance, and the matching "U"-shaped card slot 7 of the electrical control cabinet is installed in a fixed position on one side of the cabinet through the screw nut. In the application, when there is no power failure in the electrical control cabinet and the electromagnet 1 does not lose power, the electromagnet 1 is pulled in, the movable plate limit rod 311 and the rectangular slot 103 at the front end of the armature rod are in a horizontal line, and the interval is a very small distance of 1mm. In this way, even if someone pushes the handle plate 4 backwards, the movable plate limit rod 311 will contact the left end of the armature rod slot 103 after moving a very small distance to the right, so the movable plate 3 cannot continue to move to the right end, and the movable plate The lower right side 315 of 3 is located in the card slot 7, and the cabinet door will not be opened. When the circuit breaker in the electrical control cabinet loses power (or after the operator actively turns off the output power before opening the cabinet door to the main switch in the electrical control cabinet), at this moment, due to the power failure of the circuit breaker, the electromagnet 1 will also lose power. Under the action of its internal spring, the armature rod 101 moves toward the front end, and the limit rod 311 of the movable plate and the rear end through hole 102 of the armature rod of the electromagnet are in a straight line, so that after the operator pushes the handle plate 4 backward, the middle part of the handle plate 4 is in a straight line. It will drive the right side of the linkage plate 5 to move backwards through the hinge point (the rear rod 41 of the handle plate overcomes the elastic force of the spring 6 to move backwards), at this moment, the left middle part of the linkage plate 5 will rotate to the right along the shaft 213, Then the front left end of the linkage plate 5 pushes the movable plate 3 to move to the right for a certain distance, the lower right end 315 of the movable plate 3 is separated from the "U"-shaped card slot 7, and the operator can open the cabinet door (the right side of the movable plate and the The lock cylinder of the lock is connected, the movable plate moves to the right to drive the lock cylinder to move to the right, and then the cabinet door is opened, and the movable plate moves to the left to close the lock cylinder, so that the cabinet door cannot be opened). After opening the cabinet door, the operator's hand leaves the front end of the handle plate, so under the elastic force of the spring 6, the front end of the handle plate 4 moves forward, and the left end of the linkage plate 5 moves backward to restore the initial state, ready for the next use. When the operator closes the cabinet door, first press the handle plate, so that the front left end of the linkage plate 5 pushes the movable plate 3 to the right for a certain distance. After the cabinet door is closed, the movable plate opening 314 is located at the upper end of the "U"-shaped slot 7, and then operate When the person releases his hand, under the action of the spring 6, the lowermost right side 315 of the movable plate is located in the card slot 7, thereby locking the cabinet door. In the present invention, as long as the power input into the electrical control cabinet is not disconnected, the relevant personnel cannot open the cabinet door, and the cabinet door can only be opened after the power is cut off, which effectively prevents the electric shock risk brought by the live operation to the relevant personnel, and does not use a key switch cabinet. The door (there are certain disadvantages in using the key, the key needs to be carried by the relevant personnel, which will bring certain inconvenience to the relevant personnel), which is more convenient to use. Based on the above, the present invention has a good application prospect.

While the main features of the present invention and the advantages of the present invention have been shown and described above, it will be apparent to those skilled in the art that the present invention is limited to the details of the above-described exemplary embodiments without departing from the spirit or essential characteristics of the present invention. , the present invention can be implemented in other specific forms. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the appended claims. All changes within the meaning and range of the equivalents of , are included in the present invention.

In addition, it should be understood that although this specification is described according to an embodiment, it does not mean that the embodiment only includes an independent technical solution. This description in the specification is only for the sake of clarity. Those skilled in the art should take the specification as a whole and implement the The technical solutions in the examples can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims (4)

1. An electric and mechanical interlocking device comprises an electromagnet and is characterized by also comprising a bottom plate, a movable plate, a handle plate and a linkage plate; the front end of the bottom plate is provided with a fixed plate, one end of the fixed plate is provided with a through hole, and the side part of the through hole is provided with a guide rod; the movable plate is provided with a plurality of guide grooves, and a limiting rod is arranged on one inner side of one guide groove; the electromagnet is arranged at the rear part of one end of the fixed plate, and the armature rod of the electromagnet is positioned in the through hole of the fixed plate; the movable plate is positioned on the front side of the fixed plate, the armature rod of the electromagnet is positioned in the other side of one guide groove of the movable plate, and the guide rod of the fixed plate is positioned in the grooves of the rest guide grooves of the movable plate; a through hole is formed in the rear side end of the armature rod of the electromagnet, and a clamping groove is formed in the front of the through hole; the upper part of the bottom plate is provided with a shaft rod, and a shaft hole in the middle of the linkage plate is sleeved outside the shaft rod; the handle plate is provided with a shaft hole, the shaft hole of the handle plate is hinged with one side of the linkage plate, the rear side of the bottom plate is provided with a rear supporting plate, the middle part of the rear supporting plate is provided with a rear through hole, the rear side of the handle plate is externally sleeved with a spring, and the rear end of the handle plate is positioned in the rear through hole; the front of one side of the linkage plate and the front of the handle plate are positioned outside the front side of the fixed plate; the fixed plate is installed on one side in the electrical control cabinet, and the front end of the handle plate is located on the outer side of the electrical control cabinet.

2. An electrical and mechanical interlock according to claim 1 wherein the bore at one end of the fixing plate has an internal diameter greater than the external diameter of the armature rod.

3. An electrical and mechanical interlock as defined in claim 1 wherein the movable plate is movable laterally of the fixed plate.

4. An electrical and mechanical interlock as defined in claim 1 wherein the outer diameter of the limiting rod of one of the guide slots of the movable plate is smaller than the inner diameter of the through hole of the armature rod and the engaging slot of the electromagnet.

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