Electrical lock for electrical maintenance

Abstract

The utility model relates to the technical field of electrical locks, in particular to an electrical lock for electrical maintenance, which comprises a circuit breaker I and a circuit breaker II, the circuit breaker I and the circuit breaker II are respectively provided with a knife switch handle, a connecting shell is fixedly connected between the circuit breaker I and the circuit breaker II, and a connecting plate is slidably connected in the connecting shell. A connecting rod is rotationally connected to the connecting plate and movably penetrates through the top of the connecting shell, a first bevel gear is rotationally connected to the connecting rod, connecting shafts are rotationally connected to the two sides of the connecting shell correspondingly, and a first linkage rod and a second linkage rod are fixedly connected to one ends of the two connecting shafts correspondingly; the other ends of the two connecting shafts are fixedly connected with a second bevel gear and a third bevel gear respectively, the first bevel gear is meshed with the second bevel gear and the third bevel gear, and the first linkage rod and the second linkage rod are connected with the two knife switch handles in a sleeving mode respectively, so that the two knife switch handles can always face the opposite directions. And parallel operation of the first circuit breaker and the second circuit breaker is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical interlocks, in particular to an electrical interlock for electrical maintenance. Background Art

[0002] Interlocking in the electrical industry refers to the interlocking between various electrical equipment such as circuit breakers, switches, cabinet doors, etc. in the power system. After interlocking, the equipment cannot be started or prevented from accidentally entering the energized interval to ensure the safety of maintenance. Electrical interlocking is a safety measure to prevent electrical misoperation and is widely used in power systems. However, since electrical interlocking requires the connection of a large number of secondary cables and control circuits, the wiring method is relatively complicated and there is a certain degree of difficulty in operation and maintenance. In addition, electrical interlocking cannot completely prevent the occurrence of misoperation.

[0003] In the prior art, during the maintenance of power distribution equipment, in order to achieve interlock protection, the switches of the two circuit breakers need to be turned to opposite directions to avoid the two circuit breakers running in parallel. However, the following technical problems exist during the operation: it is easy to accidentally touch the switch of the circuit breaker during the maintenance process, resulting in the two circuit breakers being in the on state and running in parallel, which increases the risk of maintenance. Utility Model Content

[0004] The utility model aims to provide an electrical interlock for electrical maintenance to solve the problem that the switch of the circuit breaker is accidentally touched and turned on during the maintenance process, resulting in two circuit breakers being in the open state and running in parallel, thereby increasing the maintenance risk.

[0005] To achieve the above-mentioned purpose, the basic scheme provided by the utility model is: an electrical lock for electrical maintenance, comprising circuit breaker 1 and circuit breaker 2, both of which are provided with knife handles, a connecting shell is fixedly connected between circuit breaker 1 and circuit breaker 2, a connecting plate is slidably connected in the connecting shell, a connecting rod is rotatably connected to the connecting plate, the connecting rod movably passes through the top of the connecting shell, a bevel gear 1 is rotatably connected to the connecting rod, and connecting shafts are rotatably connected on both sides of the connecting shell, one end of the two connecting shafts is respectively fixedly connected with a linkage rod 1 and a linkage rod 2, and the other ends of the two connecting shafts are respectively fixedly connected with a bevel gear 2 and a bevel gear 3, the bevel gear 1 is meshed with the bevel gear 2 and the bevel gear 3, and the linkage rod 1 and the linkage rod 2 are respectively connected to the two knife handles.

[0006] The principle and beneficial effect of the utility model are as follows: when performing maintenance, when the knife handle on the circuit breaker 1 is toggled, the linkage rod 1 will be driven to flip, and during the flipping process of the linkage rod 1, the bevel gear 2 will be driven to rotate, and the rotating bevel gear 2 will drive the bevel gear 3 to rotate in the opposite direction through the cooperation with the bevel gear 1, so that the bevel gear 3 can drive the linkage rod 2 to flip in the direction opposite to the linkage rod 1, so that the two knife handles can always face in opposite directions, thereby preventing the circuit breaker 1 and the circuit breaker 2 from running in parallel when the knife handle is accidentally touched, thereby avoiding the circuit breaker 1 and the circuit breaker 2 from running in parallel.

[0007] Option 2, which is the preferred option of the basic option, is characterized in that two limiting strips are fixedly connected to the connecting shell, each of which is provided with an adjustment groove and a slide-out groove, a cross plate is fixedly connected to the connecting rod, and the cross plate is movably connected in the two adjustment grooves, and screw 1 and screw 2 are threadedly connected to the two limiting strips, and two positioning holes 1 and two positioning holes 2 are provided on the cross plate, and the two screw 1s are respectively bolted to the two positioning holes 1.

[0008] Option three, which is the preferred option of the basic option, each of the connecting shafts is fixedly connected with a baffle, the connecting shell is provided with two movable holes, each of the movable holes is slidably connected with a linkage plate, the two linkage plates are respectively rotatably connected to bevel gear two and bevel gear three, each of the linkage plates is rotatably connected with a linkage bar, a linkage turntable is movably sleeved on the connecting rod, the linkage turntable is rotatably connected with the two linkage bars, the bevel gear two and bevel gear three are fixedly connected with a fixing plate, the two fixing plates are respectively fixedly connected with a fixing rod and a fixed shaft, and a slot is provided on the fixing rod.

[0009] Option 4 is a preferred option of the basic option. Both the bevel gear 1 and the connecting plate are provided with limiting grooves, and both limiting grooves are rotatably connected to limiting swivels, and both limiting swivels are fixedly connected to the connecting rod.

[0010] Option five is a preferred option of the basic option. Two limiting slots are provided on the connecting rod. Both limiting slots are slidably connected with limiting blocks. Both limiting blocks are fixedly connected to the linkage turntable. The limiting blocks can drive the linkage turntable to move on the limiting slots.

[0011] Option six is ​​a preferred option of the basic option. Two guide grooves are provided on each linkage plate, two guide rods are fixedly connected to each movable hole, and the four guide grooves are slidably connected to the four guide rods respectively.

[0012] Option seven is a preferred option of the basic option. Two connecting grooves are provided on the bevel gear two and the bevel gear three. Two connecting strips are fixedly connected to each of the connecting shafts. The four connecting grooves are slidably connected to the four connecting strips respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an electrical interlock for electrical maintenance of the utility model;

[0014] Figure 2 It is a structural schematic diagram of a connecting shell portion of an electrical lock for electrical maintenance of the utility model;

[0015] Figure 3 It is a structural schematic diagram of a cross plate portion of an electrical interlock for electrical maintenance of the utility model;

[0016] Figure 4 It is a structural schematic diagram of a linkage plate portion of an electrical interlock for electrical maintenance of the utility model;

[0017] Figure 5 This is a structural schematic diagram of a connecting shaft portion of an electrical interlock for electrical maintenance of the utility model;

[0018] Figure 6 It is a structural schematic diagram of a connecting strip portion of an electrical lock for electrical maintenance of the utility model;

[0019] Figure 7 It is a cross-sectional structural schematic diagram of a connection shell portion of an electrical interlock for electrical maintenance of the utility model;

[0020] Figure 8 The utility model is a partial cross-sectional structural diagram of an electrical interlock for electrical maintenance. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below through specific implementation modes:

[0022] The reference numerals in the drawings of the specification include: 100 circuit breaker 1, 101 circuit breaker 2, 102 knife handle, 200 connecting shell, 201 connecting plate, 202 connecting rod, 203 bevel gear 1, 204 connecting shaft, 205 baffle, 206 linkage rod 1, 207 linkage rod 2, 208 bevel gear 2, 209 bevel gear 3, 210 limiting groove, 211 limiting swivel, 300 limiting strip, 301 adjusting groove , 302 sliding groove, 303 cross plate, 304 screw rod one, 305 positioning hole one, 306 screw rod two, 307 positioning hole two, 400 movable hole, 401 linkage plate, 402 linkage bar, 403 linkage turntable, 404 fixed plate, 405 fixed rod, 406 slot, 407 fixed shaft, 408 limiting slide groove, 409 limiting block, 410 guide groove, 411 guide rod, 412 connecting groove, 413 connecting bar.

[0023] Example

[0024] like Figures 1 to 8As shown: an electrical lock for electrical maintenance, including a circuit breaker 100 and a circuit breaker 101, both of which are movably connected with a switch handle 102, a connection shell 200 is fixedly connected between the circuit breaker 100 and the circuit breaker 101, a connection plate 201 is slidably connected in the connection shell 200, a connection rod 202 is rotatably connected to the connection plate 201, the connection rod 202 movably passes through the top of the connection shell 200, a bevel gear 1 203 is rotatably connected to the connection rod 202, and connecting shafts 204 are rotatably connected to both sides of the connection shell 200, and one end of the two connecting shafts 204 is respectively welded with a linkage rod 1 206 and a linkage rod 207, and the other end of the two connecting shafts 204 is respectively welded with a cone gear 1 203. Bevel gear 208 and bevel gear 3 209, bevel gear 1 203 and bevel gear 208 and bevel gear 3 209 are meshed, linkage rod 1 206 and linkage rod 2 207 are respectively sleeved with two switch handles 102, two limiting strips 300 are welded on the connecting shell 200, each limiting strip 300 is provided with an adjustment groove 301 and a slide-out groove 302, a cross plate 303 is welded on the connecting rod 202, the cross plate 303 is movably connected in the two adjustment grooves 301, the two limiting strips 300 are both threadedly connected with screw 1 304 and screw 2 306, the cross plate 303 is provided with two positioning holes 1 305 and two positioning holes 2 307, the two screws 1 304 are respectively bolted with the two positioning holes 1 305, A baffle 205 is welded on each connecting shaft 204, two movable holes 400 are provided on the connecting shell 200, a linkage plate 401 is slidably connected in each movable hole 400, the two linkage plates 401 are rotatably connected to the bevel gear 208 and the bevel gear 3 209 respectively, a linkage bar 402 is rotatably connected to each linkage plate 401, a linkage rotating disk 403 is movably sleeved on the connecting rod 202, the linkage rotating disk 403 is rotatably connected to the two linkage bars 402, a fixing plate 404 is welded on the bevel gear 208 and the bevel gear 3 209, a fixing rod 405 and a fixing shaft 407 are respectively welded on the two fixing plates 404, a slot 406 is provided on the fixing rod 405, and the bevel gear 1 203 and the connecting plate 201 are connected to each other. A limiting groove 210 is provided on each of the two limiting grooves 210, and a limiting swivel 211 is rotatably connected to each of the two limiting grooves 210. The two limiting swivels 211 are fixedly connected to the connecting rod 202. The connecting rod 202 is provided with two limiting slide grooves 408, and limiting blocks 409 are slidably connected to each of the two limiting slide grooves 408. The two limiting blocks 409 are welded to the linkage rotating disk 403. Two guide grooves 410 are provided on each linkage plate 401, and two guide rods 411 are fixedly connected to each of the movable holes 400. The four guide grooves 410 are slidably connected to the four guide rods 411 respectively. Two connecting grooves 412 are provided on the bevel gear 208 and the bevel gear 3 209, and two connecting strips 413 are fixedly sleeved on each connecting shaft 204.The four connection grooves 412 are slidably connected to the four connection bars 413 respectively.

[0025] The implementation method of this embodiment is as follows: during the maintenance process, when the knife handle 102 on the circuit breaker 100 is toggled, the moving knife handle 102 will drive the linkage rod 1 206 to flip, and the flipped linkage rod 1 206 will drive one of the connecting shafts 204 to rotate, and the rotating connecting shaft 204 will drive the bevel gear 2 208 to rotate through the cooperation of the connecting groove 412 and the connecting bar 413. The baffle 205 can prevent the bevel gear 208 from falling off the connecting shaft 204, and the continuously rotating bevel gear 208 will drive the bevel gear 1 203 to rotate by meshing with the bevel gear 1 203, and the rotating bevel gear 1 203 will pass through the limiting groove 210 on the limiting ring 21. 1 to prevent the bevel gear 1 203 from being skewed, and the continuously rotating bevel gear 1 203 will drive the bevel gear 3 209 to rotate by meshing with the bevel gear 3 209. At this time, the rotation direction of the bevel gear 3 209 is opposite to that of the bevel gear 2 208, so that the rotating bevel gear 3 209 drives another connecting shaft 204 to rotate, and then drives the linkage rod 2 207 to flip in the direction opposite to the linkage rod 1 206, so that the knife handle 102 on the circuit breaker 2 101 is moved to the direction opposite to the knife handle 102 on the circuit breaker 1 100, so that the knife handles 102 on the circuit breaker 1 100 and the circuit breaker 2 101 can always be in opposite directions.

[0026] After the inspection is completed, the screw rods 304 on both sides can be rotated to disengage the screw rods 304 from the positioning holes 305 on the cross plate 303, and the cross plate 303 can be pressed downward. When the cross plate 303 moves, it will disengage the adjustment slot 301 and slide into the slide-out slot 302. The continuously sliding cross plate 303 will drive the connecting rod 202 to slide on the connecting shell 200, and the sliding connecting rod 202 will slide on the two limiting blocks 409 respectively through the two limiting slots 408. The connecting rod 202 will drive the bevel gear 1 203 and the connecting plate 201 to slide on the inner wall of the connecting shell 200 through the cooperation of the limiting slot 210 and the limiting swivel 211, and the sliding bevel gear 1 203 will disengage from the meshing with the bevel gear 2 208 and the bevel gear 3 209. , thereby releasing the restriction on the bevel gear 208 and the bevel gear 3 209, and the linkage rod 1 206 and the linkage rod 2 207 can be moved to be in a straight line, and at the same time, the switch handles 102 on the circuit breaker 1 100 and the circuit breaker 2 101 will also be in a straight line. During the moving process, the bevel gear 208 and the bevel gear 3 209 will follow the rotation, and then the bevel gear 208 and the bevel gear 3 209 will respectively drive the upper fixed plate 404 to move, so that the slots 406 on the two fixed plates 404 correspond to the positions of the fixed shaft 407, and the fixed shaft 407 is facing the slot 406 on the fixed rod 405. At this time, the rotating cross plate 303 drives the positioning hole 2 307 and the screw 2 The position of 306 corresponds to that of the cross plate 303. When the cross plate 303 rotates, the connecting rod 202 is driven to rotate. The connecting rod 202 drives the two limiting swivels 211 to rotate in the limiting grooves 210 on the bevel gear 203 and the connecting plate 201 respectively. The rotating connecting rod 202 drives the linkage turntable 403 to rotate through the cooperation of the limiting slide groove 408 and the limiting block 409, so that the linkage turntable 403 rotates on the connecting shell 200. The linkage turntable 403 drives one end of the two linkage bars 402 to rotate and move, so that the other ends of the two linkage bars 402 respectively pull the two linkage plates 401 to move and approach each other. When the linkage plate 401 moves, it slides on the two guide rods 411 respectively through the two guide grooves 410, thereby limiting the linkage plate 401. In the moving direction, the two continuously approaching linkage plates 401 will respectively push the bevel gear 208 and the bevel gear 3 209 to move and approach each other. When the bevel gear 208 and the bevel gear 3 209 move, they will slide on the two connecting strips 413 through the two connecting grooves 412 above. The bevel gear 208 and the bevel gear 3 209 will respectively drive the two fixed plates 404 to approach each other, so that the fixed shaft 407 and the fixed rod 405 are close to each other, so that the fixed shaft 407 is inserted into the slot 406 on the fixed rod 405, so that the bevel gear 208 and the bevel gear 3 209 can achieve the effect of connection. After adjustment, the two screw rods 306 are rotated and inserted into the corresponding two positioning holes 307, so that the cross plate 303 cannot rotate.At this time, the two knife handles 102 are in the same direction. When the knife handle 102 on the circuit breaker 100 is turned, the linkage rod 1 206 will be driven to flip, and the linkage rod 1 206 will drive the bevel gear 2 208 to rotate through the connecting shaft 204. The bevel gear 208 will drive the fixed plate 404 to flip, and the fixed plate 404 will drive the fixed shaft 407 to flip through the cooperation of the fixed rod 405 and the slot 406, so that the fixed shaft 407 drives the bevel gear 3 209 to flip through another fixed plate 404, so that the linkage rod 207 can follow the linkage rod 1 206 to flip in the same direction, so that the two knife handles 102 can be opened and closed synchronously, and can be switched freely according to the usage.

[0027] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An electrical interlock for electrical maintenance, characterized in that: The invention comprises a circuit breaker 1 (100) and a circuit breaker 2 (101), wherein the circuit breaker 1 (100) and the circuit breaker 2 (101) are both provided with a switch handle (102), a connection shell (200) is fixedly connected between the circuit breaker 1 (100) and the circuit breaker 2 (101), a connection plate (201) is slidably connected in the connection shell (200), a connection rod (202) is rotatably connected to the connection plate (201), the connection rod (202) movably passes through the top of the connection shell (200), and a bevel gear 1 (203) is rotatably connected to the connection rod (202). ), the two sides of the connecting shell (200) are rotatably connected with connecting shafts (204), one end of the two connecting shafts (204) is fixedly connected with linkage rod 1 (206) and linkage rod 2 (207), the other end of the two connecting shafts (204) is fixedly connected with bevel gear 2 (208) and bevel gear 3 (209), the bevel gear 1 (203) is meshed with bevel gear 2 (208) and bevel gear 3 (209), and the linkage rod 1 (206) and linkage rod 2 (207) are respectively connected with two knife handles (102).

2. An electrical lock for electrical maintenance according to claim 1, characterized in that The connecting shell (200) is fixedly connected to two limiting bars (300), each of which is provided with an adjustment slot (301) and a slide-out slot (302). The connecting rod (202) is fixedly connected to a cross plate (303), and the cross plate (303) is movably connected in the two adjustment slots (301). The two limiting bars (300) are threadedly connected to a screw rod 1 (304) and a screw rod 2 (306). The cross plate (303) is provided with two positioning holes 1 (305) and two positioning holes 2 (307), and the two screw rods 1 (304) are respectively bolted to the two positioning holes 1 (305).

3. The electrical interlock for electrical maintenance according to claim 1, characterized in that: Each of the connecting shafts (204) is fixedly connected with a baffle (205); two movable holes (400) are provided on the connecting shell (200); a linkage plate (401) is slidably connected in each of the movable holes (400); the two linkage plates (401) are rotatably connected to the bevel gear 2 (208) and the bevel gear 3 (209) respectively; each of the linkage plates (401) is rotatably connected with a linkage bar (402); a linkage rotating disk (403) is movably sleeved on the connecting rod (202); the linkage rotating disk (403) is rotatably connected with the two linkage bars (402); the bevel gear 2 (208) and the bevel gear 3 (209) are fixedly connected with a fixing plate (404); the two fixing plates (404) are fixedly connected with a fixing rod (405) and a fixing shaft (407) respectively; a slot (406) is provided on the fixing rod (405).

4. The electrical interlock for electrical maintenance according to claim 1, characterized in that: The bevel gear 1 (203) and the connecting plate (201) are both provided with a limiting groove (210), and the two limiting grooves (210) are both rotatably connected with limiting swivels (211), and the two limiting swivels (211) are both fixedly connected to the connecting rod (202).

5. The electrical interlock for electrical maintenance according to claim 1, characterized in that The connecting rod (202) is provided with two limiting grooves (408), and both limiting grooves (408) are slidably connected with limiting blocks (409), and both limiting blocks (409) are fixedly connected to the linkage rotating disk (403).

6. The electrical interlock for electrical maintenance according to claim 3, characterized in that: Two guide grooves (410) are provided on each linkage plate (401), two guide rods (411) are fixedly connected to each movable hole (400), and the four guide grooves (410) are slidably connected to the four guide rods (411) respectively.

7. The electrical interlock for electrical maintenance according to claim 1, characterized in that: The bevel gear 2 (208) and the bevel gear 3 (209) are each provided with two connection grooves (412), each of the connection shafts (204) is fixedly connected with two connection bars (413), and the four connection grooves (412) are respectively slidably connected with the four connection bars (413).

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