An electrical and mechanical interlocking device

Abstract

An electrical and mechanical interlocking device includes an electromagnet, and also has a base plate, a movable plate, a handle plate, and a linkage plate; the front end of the base plate has a fixed plate, one end of the fixed plate has a through hole, and the side of the through hole has a guide rod; the movable plate has multiple guide grooves, and one side of 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, the movable plate is located at the front of the fixed plate, and the armature rod of the electromagnet is located in the other side of one of the guide grooves of the movable plate; the rear end of the armature rod of the electromagnet has a through hole, and the front part of the through hole has a slot; the upper part of the base 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 and one side of the linkage plate are hingedly installed together; the fixed plate is installed on one side of the electrical control cabinet, and the front end of the handle plate is located on the outside of the electrical control cabinet. The present invention prevents the risk of electric shock to relevant personnel caused by live operation, and does not use a key switch, so it is more convenient to use. Based on the above, the present invention has good application prospects.

Description

Technical Field

[0001] The invention relates to the technical field of electrical control cabinet supporting equipment, in particular to an electrical and mechanical interlocking device. Background Art

[0002] Electrical control cabinets are widely used in the field of electricity consumption and power supply. Various control switches, circuit breakers, electrical monitoring equipment, etc. are installed inside them. In order to facilitate the operation of electrical equipment in the electrical control cabinet and read the data displayed by related monitoring equipment, the electrical control cabinet is equipped with a movable door. In order to prevent unauthorized personnel from opening the movable door, the existing electrical control cabinets are equipped with various locks.

[0003] At present, the locks used in electrical control cabinets are generally mechanical locks such as padlocks and concealed locks. Although they can prevent keyless personnel from opening movable doors, when the relevant personnel do not turn off the main switch that inputs power to the electrical control cabinet (the main switch is located outside the electrical control cabinet), the relevant personnel operate the electrical equipment in the electrical control cabinet, which may cause electric shock accidents (for example, the electrical control cabinet may cause electric shock accidents due to leakage of electrical components, or the relevant personnel may cause electric shock accidents due to arcing of electrical components when operating the electrical components inside the cabinet, etc.), which poses certain safety hazards. Based on the above, it is particularly necessary to provide a safer electrical and mechanical interlocking device that can prevent the cabinet door from being opened when the main switch is not de-energized, and can only be opened after the main switch is de-energized. Summary of the invention

[0004] In order to overcome the disadvantage that the locks used in existing electrical control cabinets cannot prevent relevant personnel from opening the cabinet door when the cabinet is powered on due to structural limitations, thus posing certain safety hazards, the present invention provides a cabinet door opening method using both mechanical and electrical dual control. In application, as long as the power input to the electrical control cabinet is not disconnected, relevant personnel cannot open the cabinet door, and the cabinet door can be opened only after a power outage, which effectively prevents the risk of electric shock to relevant personnel caused by live operation, and does not use keys to open and close the cabinet door (using keys has certain disadvantages, and the keys need to be carried by relevant personnel, which will bring certain inconveniences to relevant personnel), so an electrical and mechanical interlocking device is more convenient to use.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] An electrical and mechanical interlocking device, comprising an electromagnet, characterized in that it also comprises 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 of the through hole is provided with a guide rod; the movable plate has a plurality of guide grooves, and one side of one of the guide grooves has a limit rod; the electromagnet is mounted 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 at 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 other guide grooves of the movable plate. The groove is in the groove; the rear side end of the armature rod of the electromagnet is provided with a through hole, and the front part of the through hole is provided with a slot; the upper part of the base plate is provided with a shaft rod, and the shaft hole in the middle part of the linkage plate is sleeved on the outside of the shaft rod; the handle plate is provided with a shaft hole, and the shaft hole of the handle plate and one side of the linkage plate are hingedly installed together, the rear side of the base plate is provided with a rear support plate, the middle part of the rear support plate is provided with a rear through hole, the rear side of the handle plate is covered with a spring, and the rear end of the handle plate is located in the rear through hole; the front of one side of the linkage plate and the front of the handle plate are located outside the front side of the fixed plate; the fixed plate is installed on one side inside the electrical control cabinet, and the front end of the handle plate is located outside the electrical control cabinet.

[0007] Furthermore, the inner diameter of the through hole at one end of the fixing plate is larger than the outer diameter of the armature rod.

[0008] Furthermore, the movable plate can move laterally along the fixed plate.

[0009] Furthermore, the outer diameter of the limit rod of one of the guide grooves of the movable plate is smaller than the inner diameters of the armature rod through hole and the clamping groove of the electromagnet.

[0010] The beneficial effect of the present invention is as follows: when the present invention is installed, the lower end of the bottom plate is connected to a support plate through a screw nut, and 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 a screw nut, and the front end of the movable plate is spaced a certain distance from the inner side of the cabinet door. In application, when the electromagnet is not de-energized, the electromagnet is attracted, and the movable plate limit rod and the rectangular slot at the front end of the armature rod are in a straight line horizontally, and the interval is a very small distance of 1mm, so that even if someone presses the handle plate backward, the movable plate will not move toward the right side, and the cabinet door cannot be opened. After the electromagnet loses power, the armature rod moves toward the front end, and the movable plate limit rod and the rear end through hole of the armature rod of the electromagnet are in a straight line, so that after the operator presses the handle plate backward, the left side of the front of the linkage plate will push the movable plate to move to the right, and the rightmost lower end of the movable plate is separated from the "U"-shaped 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 to the electrical control cabinet is not disconnected, the relevant personnel cannot open the cabinet door, and the cabinet door can be opened only after a power outage, which effectively prevents the risk of electric shock to the relevant personnel caused by live operation, and does not use keys to switch the cabinet door (using keys has certain disadvantages, and the keys need to be carried by the relevant personnel, which will bring certain inconvenience to the relevant personnel), making it more convenient to use. Based on the above, the present invention has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 It is a front structural schematic diagram of the present invention.

[0013] Figure 2 It is a schematic diagram of the top structure of the present invention.

[0014] Figure 3 It is a side structural schematic diagram of the present invention.

[0015] Figure 4 It is a schematic diagram of a partially enlarged structure of the present invention. DETAILED DESCRIPTION

[0016] Figure 1 , 2As shown in , 3, and 4, an electrical and mechanical interlocking device includes an electromagnet 1, wherein both ends of the power input of the electromagnet 1 and both ends of the power output of the circuit breaker in the electrical control cabinet (one of the phase lines and the neutral line of the 380V three-phase four-wire power supply) are 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 front end of the bottom plate has an integrally formed fixed plate 21 that is perpendicular to the upper part of the bottom plate, the left end of the fixed plate 21 has a through hole 211, the fixed plate 21 is located on the right side of the through hole and is spaced a certain distance apart and is longitudinally welded with two columnar guide rods 212; the left end of the movable plate 3 is spaced a certain distance apart from the front middle The movable plate 3 has three laterally distributed guide grooves 31, and a rectangular limit rod 311 is laterally provided in the middle of the left side of the leftmost guide groove 31, and the length of the limit rod 311 is more than half of the inner lateral length of the guide groove 31; 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 its armature rod 101 is located in the left through hole 211 of the fixed plate; the movable plate 3 is laterally located at the front end of the fixed plate 21, and the front part of the armature rod 101 of the electromagnet is located in the right end of the leftmost guide groove 31 of the movable plate, and the two guide rods 212 of the fixed plate 21 are respectively located in the guide grooves 31 at the right end and the middle of the left side of the movable plate, and the two guide rods 212 are respectively located in the guide grooves 31 at the right end and the middle of the left side of the movable plate. There is a circular limit plate 312 at the front end of each guide rod 212. The outer diameter of the limit plate 312 is larger than the inner diameter of the guide groove 31 at the left and right ends and the middle of the movable plate. The front outer side of the fixed plate 21 is in contact with the rear side of the movable plate; the middle part of the rear end of the armature rod 101 of the electromagnet is horizontally provided with a through hole 102, and the left side (semicircle) of the armature rod at the front position of the through hole 102 is provided with a longitudinally distributed rectangular slot 103, and the rear end of the slot 103 is connected with the left end of the through hole 102. 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 part of the bottom plate 2 is vertically distributed and welded with a The shaft rod 213, the linkage plate 5 is a "┍" type, there is an axial hole in the middle of the linkage plate 5, the axial hole in the middle of the linkage plate 5 is sleeved on the outside of the shaft rod 213, and there is a fixing plate on the shaft rod 213 whose outer diameter is larger than the inner diameter of the axial hole; the handle plate 4 has an axial hole in the middle, the axial hole of the handle plate 4 and the axial hole on the right side of the linkage plate 5 are hingedly installed together, and there is a rear support plate 23 vertically distributed and integrally formed with the bottom plate on the right rear side of the bottom plate 2, and there is a rectangular rear through hole 231 in the middle of the rear support plate 23, and there is an integrally formed rear rod 41 on the rear side of the handle plate 4 whose outer diameter is smaller than the inner diameter of the rear through hole of the rear support plate, and a spring 6 is sleeved on the outside of the rear rod 41, and the rear end of the rear rod 41 is located in the rear through hole 231;The lower front right end of the fixed plate 21 has a rectangular opening 214 with a certain length (4 cm) in the horizontal 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, the front end part of the left front side of the linkage plate 5 and the front end of the handle plate 4 are located outside the front side of the fixed plate, the lower middle part of the front side of the movable plate 3 has a first bayonet 313 with a horizontal width 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 there is a "Π"-shaped opening 314 with a certain length (6 cm) from the front middle to the lower right end of the movable plate, and the middle of the handle plate 4 is located at the bottom plate 2 The fixing plate 21 is installed at a fixed position on one side of the movable door in the electrical control cabinet through screws and nuts, and the matching "U"-shaped card slot 7 of the electrical control cabinet is installed at a fixed position on one side of the cabinet body through screws and nuts. When the cabinet door is closed, the lower right side 315 of the movable plate 3 (the downward height is higher than the downward height of the opening 314 of the movable plate) is located in the card slot 7. When the cabinet door is opened, the opening 314 of the movable plate is located outside the card slot 7 (the downward protruding part 315 of the lower right side of the movable plate plays a locking role), and the front end of the handle plate 4 is located outside the front opening of the movable door. ;

[0017] Figure 1 , 2 As shown in FIGS. 3 and 4, the inner diameter of the through hole 211 on the left of the fixed plate is larger than the outer diameter of the armature rod 101. The movable plate 3 can move horizontally left and right along the guide rod 212 of the fixed plate through the guide groove 31. The outer diameter of the left limit rod 311 inside the guide groove at the leftmost end of the movable plate is smaller than the inner diameter of the through hole 102 at the rear end of the electromagnet armature rod and the rectangular slot 103. The thickness of the handle plate 4 is smaller than the upper and lower spacing of the lower right end opening 314 of the fixed plate.

[0018] Figure 1 , 2As shown in Figures 3 and 4, when the present invention is installed, the lower end of the bottom plate 2 is connected to a support plate via 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 via a screw nut. The front end of the movable plate is spaced a certain distance from the inner side of the cabinet door, and the matching "U"-shaped card slot 7 of the electrical control cabinet is installed at a fixed position on one side of the cabinet body via a screw nut. In application, when there is no power outage in the electrical control cabinet and the electromagnet 1 is not de-energized, the electromagnet 1 is attracted, and the movable plate limit rod 311 and the rectangular card slot 103 at the front end of the armature rod are in a straight line horizontally, and the interval is a very small distance of 1mm. In this way, even if someone presses the handle plate 4 backward, the movable plate limit rod 311 will contact the left end of the armature rod card slot 103 after moving a very short distance to the right. Then, since the movable plate 3 cannot continue to move to the right end, the lower right side 315 of the movable plate 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 the operator actively turns off the output power to the main switch in the electrical control cabinet before opening the cabinet door), the electromagnet 1 will also lose power due to the power failure of the circuit breaker. Under the action of its internal spring, the armature rod 101 moves toward the front end, and the movable plate limit rod 311 and the rear end through hole 102 of the electromagnet armature rod are in a straight line. In this way, when the operator presses the handle plate 4 backward, the middle part of the handle plate 4 will drive the right side of the linkage plate 5 to move backward through the hinge point (handle The rear rod 41 of the handle plate overcomes the elastic force of the spring 6 and moves backward). At this moment, the left middle part of the linkage plate 5 will rotate to the right along the shaft 213, and then the front left end of the linkage plate 5 will push the movable plate 3 to move to the right for a distance, and the rightmost lower end 315 of the movable plate 3 will separate from the "U"-shaped slot 7, and the operator can open the cabinet door (the right side of the movable plate can also be connected to the lock core of the lock, and the movable plate moves to the right to drive the lock core to move to the right, and then the cabinet door is opened, and the movable plate moves to the left to close the lock core, 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, he first presses the handle plate, so that the front left end of the linkage plate 5 pushes the movable plate 3 to move a distance to the right. 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 the operator releases his hand. Under the action of the spring 6, the rightmost lower side 315 of the movable plate is located in the slot 7, thereby locking the cabinet door. In the present invention, 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 a power outage, which effectively prevents the risk of electric shock to the relevant personnel caused by live operation, and does not use a key to switch the cabinet door (there are certain disadvantages in using a key, and the key needs to be carried by the relevant personnel, which will bring certain inconvenience to the relevant personnel), so it is more convenient to use. Based on the above, the present invention has a good application prospect.

[0019] The main features and advantages of the present invention are shown and described above. It is obvious to those skilled in the art that the present invention is limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0020] In addition, it should be understood that although the present specification is described according to the implementation mode, the implementation mode does not only include an independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An electrical and mechanical interlocking device, comprising an electromagnet, 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 has a fixed plate, one end of the fixed plate has a through hole, and the side of the through hole has a guide rod; the movable plate has a plurality of guide grooves, and one 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 at 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 groove of the remaining guide grooves of the movable plate; the electromagnet There is a through hole at the rear end of the armature rod, and a slot is provided at the front of the through hole; there is a shaft rod at the upper part of the base plate, 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 and one side of the linkage plate are hingedly installed together, there is a rear support plate on the rear side of the base plate, and a rear through hole is provided in the middle of the rear support plate, a spring is arranged on the rear outer sleeve of the handle plate, and the rear end of the handle plate is located in the rear through hole; the front of one side of the linkage plate and the front of the handle plate are located outside the front side of the fixed plate; the fixed plate is installed on one side inside the electrical control cabinet, and the front end of the handle plate is located outside the electrical control cabinet.

2. An electrical and mechanical interlocking device according to claim 1, characterized in that: The inner diameter of the through hole at one end of the fixing plate is larger than the outer diameter of the armature rod.

3. An electrical and mechanical interlocking device according to claim 1, characterized in that: The movable plate can move laterally along the fixed plate.

4. An electrical and mechanical interlocking device according to claim 1, characterized in that: The outer diameter of the limit rod of one of the guide grooves of the movable plate is smaller than the inner diameter of the armature rod through hole and the clamping groove of the electromagnet.

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