An improved locking device for high voltage vacuum circuit breaker

Abstract

The present invention is applicable to the technical field of vacuum circuit breakers, and provides a locking device for an improved high-voltage vacuum circuit breaker, including a circuit breaker body. A locking housing is installed inside the circuit breaker body. A mounting plate is fixedly connected to the outer surface of the locking housing. The locking housing is fixed to the circuit breaker body through bolts passing through the mounting plate. An adsorption plate is fixedly connected to one side of the mounting plate. In the locking device for the improved high-voltage vacuum circuit breaker of the present invention, since the cross-section of the U-shaped transmission frame is U-shaped, when one iron rod is stuck and cannot descend, the other iron rod can still descend to push the U-shaped transmission frame to move, and realize the switch locking of the circuit breaker body, thus ensuring the smooth operation of the device. At the same time, to a certain extent, when the number of iron rods is reduced to one, when the iron rod is stuck and cannot descend, the situation where the device cannot normally lock the switch of the circuit breaker body will not occur.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum circuit breakers, and more specifically, it relates to a locking device for an improved high-voltage vacuum circuit breaker. Background Art

[0002] A high-voltage vacuum circuit breaker is an important device in high-voltage complete sets of equipment. It is a high-voltage switch device that uses a vacuum medium to achieve circuit interruption, mainly used for controlling and protecting circuits. Especially in case of a fault, it can automatically disconnect the current to protect the safety of equipment and personnel.

[0003] Currently, some existing high-voltage vacuum circuit breakers lock the switch of the high-voltage vacuum circuit breaker through a locking electromagnet. However, when the locking electromagnet fails and the iron rod of the locking electromagnet gets stuck and cannot descend to block and lock the switch, it is easy to cause mis-touching of the switch by the staff during the operation of the device, and the locking of the device switch is affected. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a locking device for an improved high-voltage vacuum circuit breaker.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A locking device for an improved high-voltage vacuum circuit breaker, including a circuit breaker body. A locking housing is installed inside the circuit breaker body. A mounting plate is fixedly connected to the outer surface of the locking housing. The locking housing is fixed to the circuit breaker body through bolts passing through the mounting plate. An adsorption plate is fixedly connected to one side of the mounting plate. Two symmetric circular ring grooves are provided inside the locking housing. Coils are arranged inside the circular ring grooves. Two symmetric sliding grooves are provided at the top of the locking housing. Iron rods are slidably connected inside both of the two sliding grooves. A first moving groove extending to the outside of the locking housing is provided inside the locking housing. A locking rod extending to the outside of the locking housing is slidably connected inside the first moving groove. Two symmetric inclined grooves are provided inside the locking housing. The inclined grooves are arranged obliquely inside the locking housing. The inside of the inclined grooves is communicated with the inside of the sliding grooves and the inside of the first moving groove. Two symmetric support plates are fixedly connected to the bottom of the iron rod. A connection transmission device is arranged on the support plates. An activity groove is provided inside the locking housing. A transmission indicating device is arranged inside the activity groove. A power groove is provided inside the locking housing. A positioning release device is arranged inside the power groove. The inside of the power groove is communicated with the inside of the sliding groove. The inside of the activity groove is communicated with the inside of the sliding groove. The cross-sections of the power groove and the activity groove are both U-shaped.

[0007] The present invention is further configured such that: the connecting and driving device includes a push rod, the surface of the push rod is slidably connected to the inside of the support plate, the number of push rods is two, the two push rods are respectively arranged on the two support plates, the adjacent sides of the two push rods are respectively fixedly connected with a first L-shaped positioning plate and a second L-shaped positioning plate, the cross-sections of the second L-shaped positioning plate and the first L-shaped positioning plate are both L-shaped, a connecting block is arranged inside the chute, the cross-section of the connecting block is an isosceles trapezoid, two symmetrical limiting grooves are opened inside the chute, a limiting rod fixedly connected to the surface of the connecting block is slidably connected inside the limiting groove, one end of a pull rope is fixedly connected to the bottom of the connecting block, the other end of the pull rope away from the connecting block passes through the inside of the inclined groove and extends into the inside of the first moving groove, the other end of the pull rope away from the connecting block is fixedly connected to the top of the locking rod, a first spring is fixedly connected to the top of the locking rod, the top end of the first spring is fixedly connected to the inner wall of the first moving groove, two symmetrical guiding blocks are fixedly connected inside the chute, and the cross-section of the guiding block is a right-angled trapezoid.

[0008] The present invention is further configured such that: one end of the left push rod slides through the inside of the second L-shaped positioning plate and extends to the outside of the second L-shaped positioning plate, and one end of the right push rod slides through the inside of the first L-shaped positioning plate and extends to the outside of the first L-shaped positioning plate.

[0009] The present invention is further configured such that: springs are fixedly connected to the relatively far sides of the first L-shaped positioning plate and the second L-shaped positioning plate, and the ends of the springs close to the support plate are fixedly connected to the surface of the support plate.

[0010] The present invention is further configured such that: the positioning release device includes a U-shaped transmission frame, the surface of the U-shaped transmission frame is slidably connected to the inside of the power groove, the cross-section of the U-shaped transmission frame is also U-shaped, the U-shaped transmission frame is composed of two vertical rods and a horizontal rod, grooves are opened on both vertical rods of the U-shaped transmission frame, the surface of the limiting rod is slidably connected to the inside of the groove, a transmission groove communicated with the inside of the first moving groove is opened inside the locking housing, a positioning rod is slidably connected to the inside of the transmission groove, an inclined surface is arranged on one side of the positioning rod, a second spring is fixedly connected to one side of the positioning rod, and the end of the second spring away from the positioning rod is fixedly connected to the inside of the transmission groove, the inside of the power groove and the inside of the transmission groove are communicated, a guiding groove is opened on the side of the U-shaped transmission frame close to the positioning rod, and a first transmission rod fixedly connected to the positioning rod is slidably connected to the inside of the guiding groove, and the guiding groove is arranged obliquely on the U-shaped transmission frame.

[0011] The present invention is further configured such that: a first pulling spring is fixedly connected to the top of the horizontal rod of the U-shaped transmission frame, and the top end of the first pulling spring is fixedly connected to the inner wall of the power groove.

[0012] The present invention is further configured such that: the transmission indicating device includes a second transmission rod, the surface of the second transmission rod is slidably connected to the inside of the movable groove, the number of the second transmission rods is two, a rotating plate is arranged inside the movable groove, the two second transmission rods are respectively arranged at both ends of the rotating plate, grooves are also formed at the tops of the second transmission rods, a second tension spring is fixedly connected to the top of the rotating plate, and the top end of the second tension spring is fixedly connected to the inner wall of the movable groove.

[0013] The present invention is further configured such that: a second moving groove extending to the inside of the movable groove is formed at the front side of the locking housing, a limiting rotating shaft is fixedly connected to one side of the rotating plate, an indicating needle is fixedly connected to the front end of the limiting rotating shaft, and a marking is arranged at the front side of the locking housing.

[0014] The present invention is further configured such that: the limiting rotating shaft is arranged at the center of the rotating plate, and the surface of the limiting rotating shaft is movably connected to the inside of the second moving groove.

[0015] The advantages of the present invention are:

[0016] For a locking device of an improved high-voltage vacuum circuit breaker of the present invention, since the cross-section of the U-shaped transmission frame is U-shaped, when one iron rod is stuck and cannot descend, the other iron rod can still descend to push the U-shaped transmission frame to move, and the opening and closing of the circuit breaker body can be locked, thus ensuring the smooth operation of the device. At the same time, to a certain extent, when the number of iron rods is one, when the iron rod is stuck and cannot descend, the situation that the device cannot normally lock the opening and closing of the circuit breaker body can be avoided, so that the staff can use the device more smoothly.

[0017] For a locking device of an improved high-voltage vacuum circuit breaker of the present invention, by pushing a second transmission rod against the rotating plate, the rotating plate is unbalanced in force, the rotating plate rotates around the limiting rotating shaft, the indicating needle deflects, and since a marking is arranged at the front side of the locking housing, the limiting rotating shaft drives the indicating needle to point to different markings, enabling the staff to accurately know which iron rod is stuck, so that the staff can repair the device more smoothly.

[0018] For a locking device of an improved high-voltage vacuum circuit breaker of the present invention, since the cross-section of the connecting block is an isosceles trapezoid, when the iron rod descends, the second L-shaped positioning plate and the first L-shaped positioning plate move relatively away under the action of the inclined surface of the connecting block, and the second L-shaped positioning plate and the first L-shaped positioning plate can more smoothly clamp and fix the connecting block, and at the same time, the device can be recycled more smoothly.

[0019] For a locking device of an improved high-voltage vacuum circuit breaker of the present invention, through the mutual cooperation of the limiting groove and the limiting rod, the moving direction of the connecting block is restricted, and the connecting block can move more smoothly. Brief Description of the Drawings

[0020] Figure 1 Structural schematic diagram of a locking device for an improved high-voltage vacuum circuit breaker of the present invention;

[0021] Figure 2 Structural schematic diagram of the locking housing of the present invention;

[0022] Figure 3 Structural schematic diagram of the first moving groove of the present invention;

[0023] Figure 4 Structural schematic diagram of the locking rod of the present invention;

[0024] Figure 5 Structural schematic diagram of the power groove of the present invention;

[0025] Figure 6 Structural schematic diagram of the rotating plate of the present invention;

[0026] Figure 7 Of the present invention Figure 3 Enlarged structural schematic diagram of A in;

[0027] Figure 8 Planar structural schematic diagram of the connecting block of the present invention;

[0028] Fig. 9 Planar structural schematic diagram of the rotating plate of the present invention;

[0029] Fig.10 Structural schematic diagram of the U-shaped transmission frame of the present invention.

[0030] In the figure: 1, circuit breaker body; 2, locking housing; 3, adsorption plate; 4, mounting plate; 5, chute; 6, iron rod; 7, circular ring groove; 8, locking rod; 9, inclined groove;

[0031] 10, first moving groove; 11, transmission groove; 12, positioning rod; 13, positioning groove; 14, first spring; 15, pull rope; 16, connecting block; 17, first L-shaped positioning plate; 18, support plate; 19, push rod;

[0032] 20, second L-shaped positioning plate; 21, U-shaped transmission frame; 22, guide groove; 23, power groove; 24, second spring; 25, groove; 26, limit groove; 27, limit rod; 28, first tension spring;

[0033] 29, first transmission rod; 30, movable groove; 31, rotating plate; 32, second transmission rod; 33, limit rotating shaft; 34, second tension spring; 35, indicating needle;

[0034] 36, spring; 37, second moving groove; 38, guide block. Detailed Description of the Invention

[0035] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0036] Please refer to Figure 1-10 , the present invention provides the following technical solution: An improved locking device for a high-voltage vacuum circuit breaker, including a circuit breaker body 1. The circuit breaker body 1 is an existing structure and will not be elaborated here. The circuit breaker body 1 can disconnect and close the control circuit. A locking housing 2 is installed inside the circuit breaker body 1. A mounting plate 4 is fixedly connected to the outer surface of the locking housing 2. The locking housing 2 is fixed to the circuit breaker body 1 through bolts passing through the mounting plate 4. A suction plate 3 is fixedly connected to one side of the mounting plate 4. Two elastic pieces are provided at the bottom of the suction plate 3. The elastic pieces are existing structures and will not be elaborated here. A wiring terminal is provided on the suction plate 3. Two symmetrical circular ring grooves 7 are opened inside the locking housing 2. A coil is provided inside the circular ring groove 7. The coil is energized through the wiring terminal on the suction plate 3. Two symmetrical sliding grooves 5 are opened at the top of the locking housing 2. An iron rod 6 is slidably connected inside each of the two sliding grooves 5. By energizing the coil, the iron rod 6 has magnetism and can be adsorbed on the suction plate 3. Due to the certain elasticity of the elastic pieces, after the iron rod 6 loses magnetism, the elastic pieces act on the iron rod 6 to make the iron rod 6 move downward more smoothly. The two elastic pieces correspond to the two iron rods 6. At the same time, a copper plate is provided between the two iron rods 6 to reduce the magnetic interference between the two iron rods 6. A first moving groove 10 extending to the outside of the locking housing 2 is opened inside the locking housing 2. A locking rod 8 extending to the outside of the locking housing 2 is slidably connected inside the first moving groove 10. The closing switch of the circuit breaker body 1 can be blocked and locked by the locking rod 8, thereby avoiding the situation that during the use of the device, the staff is prone to accidentally touch the switch of the circuit breaker body 1 and making the circuit breaker body 1 more stable in use. Two symmetrical inclined grooves 9 are opened inside the locking housing 2. The inclined grooves 9 are arranged in an inclined shape inside the locking housing 2. The inside of the inclined grooves 9 is communicated with the inside of the sliding grooves 5 and the first moving groove 10. Two symmetrical support plates 18 are fixedly connected to the bottom of the iron rod 6. A connecting transmission device is provided on the support plates 18. An activity groove 30 is opened inside the locking housing 2. A transmission indicating device is provided inside the activity groove 30. A power groove 23 is opened inside the locking housing 2. A positioning release device is provided inside the power groove 23. The inside of the power groove 23 is communicated with the inside of the sliding groove 5. The inside of the activity groove 30 is communicated with the inside of the sliding groove 5. The cross-sections of the power groove 23 and the activity groove 30 are both in a C shape. The activity groove 30 is located in front of the power groove 23. The inclined grooves 9 are provided between the power groove 23 and the activity groove 30. The transmission groove 11 is also provided between the power groove 23 and the activity groove 30. The transmission groove 11 is provided below the inclined grooves 9.

[0037] The connecting transmission device includes a push rod 19, the surface of which is slidably connected to the inside of the support plate 18. There are two push rods 19, which are respectively arranged on the two support plates 18. The adjacent sides of the two push rods 19 are respectively fixedly connected with the first L-shaped positioning plate 17 and the second L-shaped positioning plate 20. One end of the left push rod 19 slides through the inside of the second L-shaped positioning plate 20 and extends to the outside of the second L-shaped positioning plate 20. One end of the right push rod 19 slides through the inside of the first L-shaped positioning plate 17 and extends to the outside of the first L-shaped positioning plate 17. The cross-sections of the second L-shaped positioning plate 20 and the first L-shaped positioning plate 17 are both L-shaped. A connecting block 16 is arranged inside the slide groove 5. The cross-section of the connecting block 16 is an isosceles trapezoid. Two symmetrical limiting grooves 26 are provided inside the slide groove 5. The inside of the limiting groove 26 is slidably connected with the connecting block 1 6, the limit rod 27 is fixedly connected to the surface, and the movement direction of the connecting block 16 is limited by the mutual cooperation between the limit groove 26 and the limit rod 27. One end of the pull rope 15 is fixedly connected to the bottom of the connecting block 16, and the other end of the pull rope 15 away from the connecting block 16 passes through the inside of the inclined groove 9 and extends to the inside of the first moving groove 10. The other end of the pull rope 15 away from the connecting block 16 is fixedly connected to the top of the locking rod 8, and the pull rope 15 is driven to move by the connecting block 16, so that the pull rope 15 can drive the locking rod 8 to move upward. The top of the locking rod 8 is fixedly connected to the first spring 14, and the top end of the first spring 14 is fixedly connected to the inner wall of the first moving groove 10. The first spring 14 can be compressed and reset by the movement of the locking rod 8. Two symmetrical guide blocks 38 are fixedly connected to the inside of the slide groove 5, and the cross-section of the guide block 38 is a right-angle trapezoid.

[0038] Specifically, the first L-shaped positioning plate 17 and the second L-shaped positioning plate 20 are fixedly connected to the relatively distant side with a spring 36, and the end of the spring 36 close to the support plate 18 is fixedly connected to the surface of the support plate 18, and the spring 36 can be compressed and reset by the relative movement of the second L-shaped positioning plate 20 and the first L-shaped positioning plate 17. The cross-section of the connecting block 16 is an isosceles trapezoid, so that the second L-shaped positioning plate 20 and the first L-shaped positioning plate 17 move relatively away from each other under the action of the inclined surface of the connecting block 16 during the falling process of the iron rod 6, and the spring 36 is compressed. When the first L-shaped positioning plate 17 and the second L-shaped positioning plate 20 move to the bottom of the connecting block 16, the spring 36 resets to clamp the second L-shaped positioning plate 20 and the first L-shaped positioning plate 17 to fix the connecting block 16.

[0039] When the iron rod 6 drives the connecting block 16 to move upward through the second L-shaped positioning plate 20 and the first L-shaped positioning plate 17, the connecting block 16 drives the locking rod 8 to move upward through the pull rope 15, so that the locking of the switch of the circuit breaker body 1 by the device is released, and the switch of the circuit breaker body 1 can operate normally. At the same time, when the iron rod 6 moves upward to a suitable position, the inclined surface of the guide block 38 causes the two push rods 19 to move relatively closer, and the first L-shaped positioning plate 17 and the second L-shaped positioning plate 20 move relatively closer and away from each other, so that the fixing of the connecting block 16 by the first L-shaped positioning plate 17 and the second L-shaped positioning plate 20 is released.

[0040] The positioning release device includes a U-shaped transmission frame 21. The surface of the U-shaped transmission frame 21 is slidably connected to the inside of the power groove 23. The cross-section of the U-shaped transmission frame 21 is also U-shaped. The U-shaped transmission frame 21 is composed of two vertical rods and a horizontal rod. Grooves 25 are provided on both vertical rods of the U-shaped transmission frame 21. The surface of the limit rod 27 is slidably connected to the inside of the groove 25. A transmission groove 11 communicating with the inside of the first moving groove 10 is provided inside the locking housing 2. A positioning rod 12 is slidably connected to the inside of the transmission groove 11. One side of the positioning rod 12 is provided with an inclined surface. A second spring 24 is fixedly connected to one side of the positioning rod 12. The end of the second spring 24 away from the positioning rod 12 is fixedly connected to the inside of the transmission groove 11. The arrangement of the groove 25 enables the limit rod 27 and the connecting block 16 to slide more smoothly. The inside of the power groove 23 communicates with the inside of the transmission groove 11. A guide groove 22 is provided on one side of the U-shaped transmission frame 21 close to the positioning rod 12. A first transmission rod 29 fixedly connected to the positioning rod 12 is slidably connected to the inside of the guide groove 22. The guide groove 22 is inclined on the U-shaped transmission frame 21. A first pull spring 28 is fixedly connected to the top of the horizontal rod of the U-shaped transmission frame 21. The top end of the first pull spring 28 is fixedly connected to the inner wall of the power groove 23. The movement of the U-shaped transmission frame 21 can stretch and reset the first pull spring 28. The pulling force of the first pull spring 28 is less than the gravity of the iron rod 6. A positioning groove 13 is provided on one side of the locking rod 8 close to the transmission groove 11. The surface of the positioning rod 12 is inserted into the inside of the positioning groove 13. The positioning rod 12 can slide into and out of the inside of the positioning groove 13, and the position fixing and fixing release of the locking rod 8 are realized.

[0041] When the iron rod 6 drives the locking rod 8 to move upward, the U-shaped transmission frame 21 moves upward, causing the positioning rod 12 to slide into the first moving groove 10. At the same time, the locking rod 8 can push the positioning rod 12 to slide into the transmission groove 11 through the inclined surface at the bottom of the positioning rod 12. When the locking rod 8 moves to a certain position, the fixation of the connecting block 16 is released. At this time, the second spring 24 resets, causing the positioning rod 12 to slide into the positioning groove 13 and fixing the position of the locking rod 8. When the iron rod 6 drops, the iron rod 6 pushes the U-shaped transmission frame 21 to move downward, and the U-shaped transmission frame 21 drives the positioning rod 12 to slide out of the positioning groove 13 through the guiding groove 22, thereby releasing the fixation of the locking rod 8, enabling the first spring 14 to drive the locking rod 8 to reset, and enabling the locking rod 8 to block and lock the switch of the circuit breaker body 1. At the same time, since the cross-section of the U-shaped transmission frame 21 is U-shaped, when one iron rod 6 is stuck and cannot descend, the other iron rod 6 can still push the U-shaped transmission frame 21 to move downward when it descends, and the switch of the circuit breaker body 1 can be locked, thus ensuring the smooth operation of the device. At the same time, to a certain extent, when the number of iron rods 6 is reduced to one, when the iron rod 6 is stuck and cannot descend, the situation where the device cannot normally lock the switch of the circuit breaker body 1 will not occur, enabling the staff to use the device more smoothly.

[0042] The transmission indicating device includes a second transmission rod 32. The surface of the second transmission rod 32 is slidably connected to the inside of the moving groove 30. The number of the second transmission rods 32 is two. A rotating plate 31 is arranged inside the moving groove 30. The two second transmission rods 32 are respectively arranged at both ends of the rotating plate 31 to keep the rotating plate 31 horizontal. A groove 25 is also formed at the top of the second transmission rod 32. A second tension spring 34 is fixedly connected to the top of the rotating plate 31. The top end of the second tension spring 34 is fixedly connected to the inner wall of the moving groove 30. The second tension spring 34 can be stretched and reset by the up and down movement of the rotating plate 31.

[0043] A second moving groove 37 extending to the inside of the moving groove 30 is formed on the front side of the locking housing 2. A limiting rotating shaft 33 is fixedly connected to one side of the rotating plate 31. The limiting rotating shaft 33 is arranged at the center of the rotating plate 31. The surface of the limiting rotating shaft 33 is movably connected to the inside of the second moving groove 37. The limiting rotating shaft 33 can rotate and move inside the second moving groove 37. An indicating needle 35 is fixedly connected to the front end of the limiting rotating shaft 33. A mark is arranged on the front side of the locking housing 2. By driving the indicating needle 35 to point to different marks through the limiting rotating shaft 33, the staff can accurately know which iron rod 6 is stuck, enabling the staff to repair the device more smoothly.

[0044] When the two iron rods 6 move downward during the fall, they push the two second transmission rods 32 downward, causing the second transmission rods 32 to push the second transmission rods 32, the limit rotation shaft 33, and the indicating needle 35 downward. When one iron rod 6 gets stuck, the other iron rod 6 moves downward to push the corresponding second transmission rod 32, causing one second transmission rod 32 to push the rotating plate 31, making the force on the rotating plate 31 unbalanced. The rotating plate 31 rotates around the limit rotation shaft 33, causing the indicating needle 35 to deflect and make a mark.

[0045] Working principle: For a locking device of an improved high-voltage vacuum circuit breaker, after the locking housing 2 is installed by the operator during use, the wiring terminal of the locking housing 2 is connected by plugging in a wire. When the device is in use, the external control device makes the iron rod 6 magnetic by energizing the coil, and the iron rod 6 can be adsorbed on the adsorption plate 3. Due to the elasticity of the elastic piece, after the iron rod 6 loses magnetism, the elastic piece acts on the iron rod 6, enabling the iron rod 6 to move downward more smoothly;

[0046] When the iron rod 6 drives the connecting block 16 to move upward through the second L-shaped positioning plate 20 and the first L-shaped positioning plate 17, the connecting block 16 drives the locking rod 8 to move upward through the pull rope 15, releasing the locking of the switch of the circuit breaker body 1, enabling the switch of the circuit breaker body 1 to operate normally. At the same time, when the iron rod 6 moves upward to a suitable position, the inclined surface of the guide block 38 causes the two push rods 19 to move relatively closer, and the first L-shaped positioning plate 17 and the second L-shaped positioning plate 20 move relatively closer and farther away, thus releasing the fixation of the connecting block 16 by the first L-shaped positioning plate 17 and the second L-shaped positioning plate 20;

[0047] During the process of the iron rod 6 driving the locking rod 8 to move upward, the U-shaped transmission frame 21 moves upward, causing the positioning rod 12 to slide into the first moving groove 10. At the same time, the locking rod 8, through the inclined surface at the bottom of the positioning rod 12, enables the locking rod 8 to push the positioning rod 12 to slide into the transmission groove 11. When the locking rod 8 moves to a certain position, the fixation of the connecting block 16 is released. At this time, the second spring 24 resets, causing the positioning rod 12 to slide into the positioning groove 13 and achieving the position fixation of the locking rod 8;

[0048] The cross-section of the connecting block 16 is an isosceles trapezoid, so that when the iron rod 6 falls, the second L-shaped positioning plate 20 and the first L-shaped positioning plate 17 move relatively away under the action of the inclined surface of the connecting block 16, and the spring 36 is compressed. When the first L-shaped positioning plate 17 and the second L-shaped positioning plate 20 move to the bottom of the connecting block 16, the spring 36 resets to clamp and fix the connecting block 16 by the second L-shaped positioning plate 20 and the first L-shaped positioning plate 17, and enable the recycling of the device, so that when the iron rod 6 rises, it can drive the connecting block 16 to move upward through the first L-shaped positioning plate 17 and the second L-shaped positioning plate 20;

[0049] When the iron rod 6 falls, the iron rod 6 pushes the U-shaped transmission frame 21 to move downward, and the U-shaped transmission frame 21 drives the positioning rod 12 to slide out of the positioning slot 13 through the guide slot 22, so as to realize the release of the fixation of the locking rod 8, and the first spring 14 drives the locking rod 8 to reset, and the locking rod 8 can block and lock the switch of the circuit breaker body 1. At the same time, because the cross-section of the U-shaped transmission frame 21 is U-shaped, when one iron rod 6 is stuck and cannot descend, the other iron rod 6 can also push the U-shaped transmission frame 21 to move downward when it descends, and realize the locking of the switch of the circuit breaker body 1, thus ensuring the smooth operation of the device. At the same time, to a certain extent, when the number of iron rods 6 is one, when the iron rod 6 is stuck and cannot descend, the situation that the device cannot normally lock the switch of the circuit breaker body 1 will not occur;

[0050] When the two iron rods 6 fall, they push the two second transmission rods 32 to move downward, and the second transmission rods 32 push the second transmission rods 32, the limit rotating shaft 33, and the indicating needle 35 to move downward. When one iron rod 6 is stuck, the other iron rod 6 moves downward to push the corresponding second transmission rod 32 to move, so that one second transmission rod 32 pushes the rotating plate 31, making the force on the rotating plate 31 unbalanced. The rotating plate 31 rotates around the limit rotating shaft 33, causing the indicating needle 35 to deflect. Since there are marks on the front side of the locking housing 2, the limit rotating shaft 33 drives the indicating needle 35 to point to different marks, enabling the staff to accurately know which iron rod 6 is stuck, and enabling the staff to repair the device more smoothly.

[0051] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An improved locking device for a high-voltage vacuum circuit breaker, comprising a circuit breaker body (1), characterized in that: Inside the circuit breaker body (1), a locking housing (2) is installed. An installation plate (4) is fixedly connected to the outer surface of the locking housing (2). The locking housing (2) is fixed to the circuit breaker body (1) by bolts passing through the installation plate (4). An adsorption plate (3) is fixedly connected to one side of the installation plate (4). Two symmetrical circular grooves (7) are formed inside the locking housing (2). A coil is arranged inside the circular groove (7). Two symmetrical sliding grooves (5) are formed at the top of the locking housing (2). A iron rod (6) is slidably connected inside each of the two sliding grooves (5). A first moving groove (10) extending to the outside of the locking housing (2) is formed inside the locking housing (2). A locking rod (8) extending to the outside of the locking housing (2) is slidably connected inside the first moving groove (10). Two symmetrical inclined grooves (9) are formed inside the locking housing (2). The inclined grooves (9) are arranged obliquely inside the locking housing (2). The inside of the inclined grooves (9) communicates with the inside of the sliding grooves (5) and the first moving groove (10). Two symmetrical support plates (18) are fixedly connected to the bottom of the iron rod (6). A connection transmission device is arranged on the support plate (18). An activity groove (30) is formed inside the locking housing (2). A transmission indication device is arranged inside the activity groove (30). A power groove (23) is formed inside the locking housing (2). A positioning release device is arranged inside the power groove (23). The inside of the power groove (23) communicates with the inside of the sliding groove (5). The inside of the activity groove (30) communicates with the inside of the sliding groove (5). The cross-sections of the power groove (23) and the activity groove (30) are both C-shaped; The connection transmission device includes push rods (19). The surface of the push rod (19) is slidably connected to the inside of the support plate (18). The number of the push rods (19) is two. The two push rods (19) are respectively arranged on the two support plates (18). A first L-shaped positioning plate (17) and a second L-shaped positioning plate (20) are respectively fixedly connected to the adjacent sides of the two push rods (19). The cross-sections of the second L-shaped positioning plate (20) and the first L-shaped positioning plate (17) are both L-shaped. A connection block (16) is arranged inside the sliding groove (5). The cross-section of the connection block (16) is an isosceles trapezoid. Two symmetrical limiting grooves (26) are formed inside the sliding groove (5). A limiting rod (27) fixedly connected to the surface of the connection block (16) is slidably connected inside the limiting groove (26). One end of a pull rope (15) is fixedly connected to the bottom of the connection block (16). The other end of the pull rope (15) far from the connection block (16) passes through the inside of the inclined groove (9) and extends to the inside of the first moving groove (10). The other end of the pull rope (15) far from the connection block (16) is fixedly connected to the top of the locking rod (8). A first spring (14) is fixedly connected to the top of the locking rod (8). The top end of the first spring (14) is fixedly connected to the inner wall of the first moving groove (10). Two symmetrical guiding blocks (38) are fixedly connected inside the sliding groove (5). The cross-section of the guiding block (38) is a right trapezoid; One end of the push rod (19) on the left side slides through the interior of the second L-shaped positioning plate (20) and extends to the outside of the second L-shaped positioning plate (20), and one end of the push rod (19) on the right side slides through the interior of the first L-shaped positioning plate (17) and extends to the outside of the first L-shaped positioning plate (17). On the relatively far sides of the first L-shaped positioning plate (17) and the second L-shaped positioning plate (20), a spring (36) is fixedly connected, and the end of the spring (36) close to the support plate (18) is fixedly connected to the surface of the support plate (18). The positioning release device includes a U-shaped transmission frame (21). The surface of the U-shaped transmission frame (21) is slidably connected to the interior of the power groove (23). The cross-section of the U-shaped transmission frame (21) is also U-shaped. The U-shaped transmission frame (21) is composed of two vertical rods and a horizontal rod. Grooves (25) are provided on both vertical rods of the U-shaped transmission frame (21). The surface of the limit rod (27) is slidably connected to the interior of the groove (25). A transmission groove (11) communicating with the interior of the first moving groove (10) is provided in the interior of the locking housing (2). A positioning rod (12) is slidably connected to the interior of the transmission groove (11). One side of the positioning rod (12) is provided with an inclined surface. A second spring (24) is fixedly connected to one side of the positioning rod (12). The end of the second spring (24) away from the positioning rod (12) is fixedly connected to the interior of the transmission groove (11). The interior of the power groove (23) and the interior of the transmission groove (11) are communicated. A guiding groove (22) is provided on one side of the U-shaped transmission frame (21) close to the positioning rod (12). A first transmission rod (29) fixedly connected to the positioning rod (12) is slidably connected to the interior of the guiding groove (22). The guiding groove (22) is inclinedly arranged on the U-shaped transmission frame (21).

2. The locking device of an improved high-voltage vacuum circuit breaker according to claim 1 is characterized in that: A first pulling spring (28) is fixedly connected to the top of the horizontal rod of the U-shaped transmission frame (21), and the top end of the first pulling spring (28) is fixedly connected to the inner wall of the power groove (23).

3. The locking device of an improved high-voltage vacuum circuit breaker according to claim 1 is characterized in that: The transmission indicating device includes a second transmission rod (32). The surface of the second transmission rod (32) is slidably connected to the interior of the moving groove (30). The number of the second transmission rods (32) is two. A rotating plate (31) is arranged in the interior of the moving groove (30). The two second transmission rods (32) are respectively arranged at both ends of the rotating plate (31). Grooves (25) are also provided at the tops of the second transmission rods (32). A second pulling spring (34) is fixedly connected to the top of the rotating plate (31), and the top end of the second pulling spring (34) is fixedly connected to the inner wall of the moving groove (30).

4. The locking device of an improved high-voltage vacuum circuit breaker according to claim 3 is characterized in that: A second moving groove (37) extending to the interior of the moving groove (30) is provided on the front side of the locking housing (2). A limit rotating shaft (33) is fixedly connected to one side of the rotating plate (31). An indicating needle (35) is fixedly connected to the front end of the limit rotating shaft (33). A mark is provided on the front side of the locking housing (2).

5. The locking device of an improved high-voltage vacuum circuit breaker according to claim 4 is characterized in that: The limit rotating shaft (33) is arranged at the center of the rotating plate (31), and the surface of the limit rotating shaft (33) is movably connected to the interior of the second moving groove (37).

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