A circuit breaker insulation mounting bracket

Abstract

The present invention relates to the technical field of circuit breaker mounting frame devices, and discloses an insulating mounting frame for a circuit breaker, which includes a mounting frame housing, a clamping and fixing device, an ejecting device, a heat dissipation device, a controller and other structures. The clamping and fixing device is arranged on the mounting frame housing and is used for clamping and fixing the circuit breaker. The ejecting device is arranged on the mounting frame housing and is used for ejecting the circuit breaker housing. The heat dissipation device is arranged on the mounting frame housing and is used for dissipating heat from the circuit breaker. By setting structures such as a cylinder, a fixing plate, and clamping plates, when fixing the circuit breaker, the fixing plate moves downward to fix the top of the circuit breaker, and the two clamping plates move towards each other to clamp and fix the two side parts of the circuit breaker, so that the circuit breaker can receive uniform fixing force and prevent the circuit breaker from loosening. By setting structures such as a number of first springs and a number of second springs, the circuit breaker can be buffered when fixing the circuit breaker, preventing damage to the circuit breaker when clamping and fixing the circuit breaker.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breaker mounting frame equipment, and in particular to an insulating mounting frame for a circuit breaker. Background Art

[0002] As an electrical device, the main function of a circuit breaker is to protect the circuit from faults such as overload and short circuit. To ensure the safe operation of the circuit breaker and extend its service life, the installation environment and installation method of the circuit breaker are very crucial. As a device for fixing and supporting the circuit breaker, the insulating mounting frame not only needs to provide sufficient mechanical support but also ensure electrical safety and stability.

[0003] During the process of clamping and fixing the circuit breaker, the existing circuit breaker mounting frame may not evenly distribute the fixing force, resulting in inaccurate positioning or looseness of the circuit breaker on the mounting frame, which will in turn affect the normal working state of the circuit breaker. Therefore, an insulating mounting frame for a circuit breaker is proposed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is how to prevent the circuit breaker from loosening due to uneven fixing force by making the circuit breaker receive uniform fixing force from the fixing device, and provide an insulating mounting frame for a circuit breaker.

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

[0006] An insulating mounting frame for a circuit breaker includes a mounting frame housing, a clamping and fixing device, an ejecting device, a heat dissipation device, and a controller.

[0007] The mounting frame housing is horizontally arranged and fixedly connected to the wall surface.

[0008] The clamping and fixing device is arranged on the mounting frame housing and is used for clamping and fixing the circuit breaker.

[0009] The ejecting device is arranged on the mounting frame housing and is used for ejecting the circuit breaker housing.

[0010] The heat dissipation device is arranged on the mounting frame housing and is used for dissipating heat from the circuit breaker.

[0011] The controller is fixedly connected to the side of the mounting frame housing, and the controller is electrically connected to the clamping and fixing device and the heat dissipation device respectively.

[0012] When using this device, the staff places the circuit breaker inside the mounting frame housing. The staff fixes the circuit breaker through the clamping and fixing device, dissipates heat from the circuit breaker through the heat dissipation device. When it is necessary to take out the circuit breaker for maintenance, the ejecting device ejects the circuit breaker, facilitating the staff to take out the circuit breaker.

[0013] Further, the clamping and fixing device includes a mounting box, a cylinder, a mounting plate, a plurality of first springs, and a fixing plate.

[0014] The mounting box is arranged inside the housing of the mounting rack, close to the inner top surface of the housing of the mounting rack, and the upper part of the mounting box is fixedly connected to the inner top surface of the housing of the mounting rack.

[0015] The telescopic rod of the cylinder extends vertically, the cylinder is fixedly connected to the inner top surface of the housing of the mounting rack, and the telescopic rod of the cylinder vertically penetrates the bottom of the mounting box. The telescopic rod of the cylinder is slidably connected to the mounting box, and the sliding direction is parallel to the telescopic direction of the telescopic rod of the cylinder.

[0016] The mounting plate is perpendicular to the telescopic rod of the cylinder, is arranged inside the housing of the mounting rack, is below the mounting box, and the top of the mounting plate is fixedly connected to the telescopic rod of the cylinder.

[0017] A plurality of first springs are arranged inside the housing of the mounting rack, are below the mounting plate, and are respectively arranged on both sides of the telescopic rod of the cylinder. The upper ends of the plurality of first springs are respectively fixedly connected to the bottom of the mounting plate.

[0018] The fixing plate is parallel to the mounting plate, is arranged inside the housing of the mounting rack, is below the plurality of first springs, and the top of the fixing plate is fixedly connected to the lower ends of the plurality of first springs.

[0019] When it is necessary to fix the top of the circuit breaker, the staff controls the telescopic rod of the cylinder to move downward through the controller. The telescopic rod of the cylinder drives the two movable rods to contract, drives the mounting plate to move downward, the mounting plate drives the plurality of first springs to move downward, the plurality of first springs drive the fixing plate to move downward. After the fixing plate contacts the top of the circuit breaker, the mounting plate continues to move downward relative to the fixing plate, and then the plurality of first springs contract, so that the fixing plate fixes the top of the circuit breaker.

[0020] When it is necessary to release the fixation of the top of the circuit breaker, the staff controls the telescopic rod of the cylinder to move upward through the controller. The telescopic rod of the cylinder drives the two movable rods to expand, drives the mounting plate to move upward. The mounting plate first moves upward relative to the fixing plate. After the plurality of first springs are reset, the mounting plate drives the plurality of first springs to move upward, and the plurality of first springs drive the fixing plate to move upward, releasing the fixation of the top of the circuit breaker.

[0021] Further, the clamping and fixing device includes two chutes, two round rods, two sliders, two sliding plates, two movable rods, a plurality of second springs, and two clamping plates.

[0022] The extending directions of the two chutes are respectively perpendicular to the telescopic rod of the cylinder. The two chutes are arranged at the bottom of the mounting box and are symmetrically arranged on both sides of the telescopic rod of the cylinder.

[0023] The axes of the two round rods are respectively parallel to the extending directions of the two sliding grooves, and are respectively arranged inside the two sliding grooves. The two round rods are respectively fixedly connected to the inner walls of the two sliding grooves.

[0024] The two sliders are respectively perpendicular to the two round rods, are respectively arranged at the lower parts of the two sliding grooves, and are respectively sleeved outside the two round rods. The two sliders are respectively slidably connected to the two round rods, and the sliding directions are both parallel to the axes of the round rods.

[0025] The two sliding plates are respectively perpendicular to the axes of the two round rods, are arranged inside the housing of the mounting bracket, are respectively below the two sliders, and the tops of the two sliding plates are respectively fixedly connected to the bottoms of the two sliders.

[0026] The two movable rods are obliquely arranged inside the housing of the mounting bracket, are arranged below the mounting box, are between the two sliding plates, and are symmetrically arranged on both sides of the telescopic rod of the air cylinder. The lower ends of the two movable rods are respectively hinged to the telescopic rod of the air cylinder, and the upper ends are respectively hinged to the two sliding plates. The axes of the hinges are both horizontal and perpendicular to the axes of the round rods.

[0027] A number of second springs are respectively arranged inside the housing of the mounting bracket, are below the fixed plate, and are on the opposite sides of the two sliding plates. The far ends of the a number of second springs are respectively fixedly connected to the two sliding plates.

[0028] The two clamping plates are respectively parallel to the two sliding plates, are arranged inside the housing of the mounting bracket, are below the fixed plate, and are between the two sliding plates. The two clamping plates are respectively fixedly connected to the opposite ends of a number of second springs.

[0029] When it is necessary to clamp and fix the two sides of the circuit breaker, the telescopic rod of the air cylinder drives the two movable rods to contract. The two movable rods drive the two sliding plates to move towards each other. The two sliding plates drive a number of second springs to move towards each other. A number of second springs drive the two clamping plates to move towards each other. After the two clamping plates contact the two sides of the circuit breaker, the two sliding plates continue to move towards each other relative to the two clamping plates. Further, a number of second springs contract, so that the two clamping plates clamp and fix the circuit breaker.

[0030] When it is necessary to release the clamping and fixing of the two sides of the circuit breaker, the telescopic rod of the air cylinder drives the two movable rods to expand. The two movable rods drive the two sliding plates to move in opposite directions. The two sliding plates first move in opposite directions relative to the two clamping plates. After a number of second springs are reset, the two sliding plates drive a number of second springs to move in opposite directions. A number of second springs drive the two clamping plates to move in opposite directions, releasing the clamping and fixing of the circuit breaker.

[0031] Further, a number of first springs and a number of second springs are evenly distributed.

[0032] So that the fixed plate and the clamping plate can obtain buffering when fixing the circuit breaker.

[0033] Furthermore, the ejection device includes a first groove, a first cylinder body, a first piston, a plug rod, a placement box, a second cylinder body, a second piston, two first telescopic rods, two third springs, a second telescopic rod, and a connecting pipe.

[0034] The first groove is arranged on the inner bottom surface of the mounting frame housing and is oppositely arranged with the fixed plate.

[0035] The axis of the first cylinder body is parallel to the telescopic direction of the telescopic rod of the cylinder, and it is arranged inside the first groove. The bottom of the first cylinder body is fixedly connected to the inner wall of the first groove.

[0036] The axis of the first piston coincides with the axis of the first cylinder body, and it is arranged inside the first cylinder body. The first piston is slidably connected to the inner wall of the first cylinder body, and the sliding direction is parallel to the axis of the first cylinder body.

[0037] The axis of the plug rod coincides with the axis of the first cylinder body, and it is arranged at the upper part of the first cylinder body, above the first piston. The lower end of the plug rod is fixedly connected to the top of the first piston, and the upper end of the plug rod penetrates through the top of the first cylinder body. The plug rod is slidably connected to the top of the first cylinder body, and the sliding direction is parallel to the axis of the first cylinder body.

[0038] The placement box is perpendicular to the plug rod and is arranged inside the mounting frame housing, above the first groove. The bottom of the placement box is fixedly connected to the upper end of the plug rod, and the outer part of the placement box is slidably connected to the inner wall of the first groove, and the sliding direction is parallel to the axis of the first cylinder body. The top and side of the placement box have openings.

[0039] The axis of the second cylinder body is parallel to the axis of the round rod, and it is arranged inside the mounting frame housing, on the side of the chute away from the cylinder. The second cylinder body is fixedly connected to the inner bottom surface of the mounting frame housing. A ventilation hole is arranged on the side of the second cylinder body close to the placement box.

[0040] The axis of the second piston coincides with the axis of the second cylinder body, and it is arranged inside the second cylinder body. The second piston is slidably connected to the inner wall of the second cylinder body, and the sliding direction is parallel to the axis of the second cylinder body.

[0041] The telescopic directions of the two first telescopic rods are parallel to the axis of the second cylinder body, and they are symmetrically arranged up and down inside the second cylinder body, on the side of the second piston away from the placement box. One end of each of the two first telescopic rods is fixedly connected to the inner wall of the second cylinder body, and the other end of each is fixedly connected to the second piston. The two first telescopic rods are multi-section telescopic rods.

[0042] The two third springs are respectively arranged inside the second cylinder body, on the side of the second piston away from the placement box, and are respectively sleeved on the outer sides of the two first telescopic rods. One end of each of the two third springs is fixedly connected to the inner wall of the second cylinder body, and the other end of each is fixedly connected to the second piston. The two third springs are in a compressed state.

[0043] The axis of the second telescopic rod coincides with the axis of the second cylinder body. It is arranged on the side of the second cylinder body close to the placement box and is located on the side of the second piston close to the placement box. One end of the second telescopic rod is fixedly connected to the second piston, and the other end penetrates through the side of the second cylinder body and is fixedly connected to the side of the sliding plate. Moreover, the second telescopic rod is slidably connected to the side of the second cylinder body, and the sliding direction is parallel to the axis of the second cylinder body. The second telescopic rod is in a contracted state.

[0044] The connecting pipe is arranged inside the housing of the mounting rack. One end of the connecting pipe communicates with the side of the second cylinder body away from the placement box, and the other end penetrates through the bottom of the housing of the mounting rack and communicates with the bottom of the first cylinder body.

[0045] When it is necessary to move the circuit breaker downward, when the two movable rods drive the two sliding plates to move towards each other, the two third springs gradually reset. The two third springs drive the second piston close to the placement box. After the two third springs are fully reset, the second piston also moves to the inner wall of the side of the second cylinder body close to the placement box. Then, when the two sliding plates continue to move towards each other, the sliding plate will stretch the second telescopic rod.

[0046] When the two third springs drive the second piston close to the placement box, the first piston moves downward, the first piston drives the plug rod to move downward, the plug rod drives the placement box to move downward, and the placement box drives the circuit breaker to move downward, so that the top of the placement box is at the same horizontal plane as the inner bottom surface of the housing of the mounting rack.

[0047] When it is necessary to move the circuit breaker upward to take it out, the two movable rods drive the two sliding plates to move in the opposite direction. The sliding plate first drives the second telescopic rod to contract. After the second telescopic rod finishes contracting, the sliding plate drives the second telescopic rod away from the placement box. The second telescopic rod drives the second piston away from the placement box, and the second piston compresses the two third springs.

[0048] When the second telescopic rod drives the second piston away from the placement box, the first piston moves upward, the first piston drives the plug rod to move upward, the plug rod drives the placement box to move upward, and the placement box drives the circuit breaker to move upward. Then, the staff can take out the circuit breaker from the opening of the placement box without having to pull the circuit breaker upward, which is more convenient.

[0049] Furthermore, the second telescopic rod and the sliding plate are fixedly connected by welding.

[0050] So that the sliding plate can stably drive the second telescopic rod to contract.

[0051] Furthermore, the connecting pipe is made of a flexible pipe.

[0052] Prevent the connecting pipe from being damaged due to collision.

[0053] Furthermore, the heat dissipation device includes a first motor, a fan, a second groove, a switch, and a vertical rod.

[0054] The axis of the rotating shaft of the first motor is parallel to the axis of the second cylinder block, and it is arranged inside the housing of the mounting bracket, on the side of the sliding plate away from the placement box. The housing of the first motor is fixedly connected to the side part of the sliding plate.

[0055] The axis of the fan coincides with the axis of the rotating shaft of the first motor, and it is arranged inside the housing of the mounting bracket, on the side of the first motor away from the placement box. It is sleeved outside the rotating shaft of the first motor, and the fan is fixedly connected to the rotating shaft of the first motor, and its axis of rotation coincides with its own axis.

[0056] The second groove is arranged on the bottom surface of the mounting plate and above the fixed plate.

[0057] The switch is arranged inside the second groove, and the switch is fixedly connected to the inner top surface of the second groove. The switch is used to control the start and stop of the first motor.

[0058] The axis of the vertical rod coincides with the axis of the first cylinder block, and it is arranged at the lower part of the second groove and above the fixed plate. The lower end of the vertical rod is fixedly connected to the top of the fixed plate.

[0059] When heat dissipation is required for the circuit breaker, the mounting plate continues to move downward relative to the fixed plate. The mounting plate drives the switch to move downward relative to the fixed plate. Then the vertical rod contacts and presses the switch. The switch transmits a signal to the controller. Then the controller controls the first motor to start. The rotating shaft of the first motor drives the fan to rotate. The rotation of the fan accelerates the air flow around the circuit breaker to dissipate heat from the circuit breaker.

[0060] When heat dissipation for the circuit breaker is not required, the mounting plate moves upward relative to the fixed plate. The mounting plate drives the switch to move upward relative to the fixed plate. Then the switch moves away from the vertical rod and releases the pressed state. Then the switch transmits a signal to the controller. Then the controller controls the first motor to stop working, thereby saving electric energy.

[0061] Furthermore, the placement box and the plug rod are fixedly connected by bolts.

[0062] It is convenient to replace the placement box.

[0063] Furthermore, insulating layers are arranged on the bottom of the fixed plate, on the opposite side parts of the two clamping plates, and on the inner wall of the placement box.

[0064] Prevent the current of the circuit breaker from being transmitted out through the fixed plate, the clamping plates, and the placement box.

[0065] The beneficial effects of the present invention:

[0066] 1. The present invention is provided with structures such as a cylinder, a fixing plate, and a clamping plate. When fixing the circuit breaker, the fixing plate moves downward to fix the top of the circuit breaker, and the two clamping plates move towards each other to clamp and fix the two side parts of the circuit breaker, so that the circuit breaker can receive uniform fixing force and prevent the phenomenon of loosening of the circuit breaker. By providing a number of first springs, a number of second springs and other structures, it is possible to buffer the circuit breaker when fixing the circuit breaker, and prevent damage to the circuit breaker when clamping and fixing the circuit breaker.

[0067] 2. The present invention is provided with structures such as a placement box, a first cylinder body, a second cylinder body, etc. The circuit breaker is placed in the placement box, so that the clamping and fixing device can accurately clamp and fix the circuit breaker. When the circuit breaker needs to be replaced and repaired, the placement box can be ejected, and then the staff can take out the circuit breaker from the opening of the placement box, which is more convenient.

[0068] 3. The present invention is provided with structures such as a switch, a first motor, a fan, etc. When the circuit breaker is clamped and fixed, the first motor drives the fan to accelerate the air circulation around the circuit breaker and dissipate heat from the circuit breaker. When the circuit breaker needs to be taken out, the circuit breaker is not fixed, and the first motor does not start, saving electric energy. Description of the Drawings

[0069] Figure 1 is the front sectional structure schematic diagram of the insulating mounting frame of this circuit breaker;

[0070] Figure 2 is the Figure 1 enlarged structure schematic diagram at A in

[0071] Figure 3 is the side view structure schematic diagram of the mounting frame housing of the insulating mounting frame of this circuit breaker;

[0072] Figure 4 is the top view structure schematic diagram of the placement box of the insulating mounting frame of this circuit breaker.

[0073] Description of the Reference Numerals: 1. Mounting Frame Housing; 2. Mounting Box; 3. Cylinder; 4. Mounting Plate; 5. First Spring; 6. Fixing Plate; 7. Chute; 8. Round Rod; 9. Slide Block; 10. Sliding Plate; 11. Movable Rod; 12. Second Spring; 13. Clamping Plate; 14. First Groove; 15. First Cylinder Body; 16. First Piston; 17. Plug Rod; 18. Placement Box; 19. Second Cylinder Body; 20. Second Piston; 21. First Telescopic Rod; 22. Third Spring; 23. Second Telescopic Rod; 24. Connecting Pipe; 25. First Motor; 26. Fan; 27. Second Groove; 28. Switch; 29. Vertical Rod; 30. Controller. Detailed Embodiments

[0074] The concept of the present invention and the technical effects produced will be clearly and completely described below in conjunction with embodiments to fully understand the purpose, features, and effects of the present invention.

[0075] As Figures 1-4 shown, the technical solution adopted by the present invention to solve its technical problems is:

[0076] A circuit breaker insulating mounting bracket, comprising a mounting bracket housing 1, a clamping and fixing device, an ejecting device, a heat dissipation device, and a controller 30.

[0077] The mounting bracket housing 1 is horizontally arranged and fixedly connected to the wall surface.

[0078] The clamping and fixing device is arranged on the mounting bracket housing 1 and is used for clamping and fixing the circuit breaker.

[0079] The ejecting device is arranged on the mounting bracket housing 1 and is used for ejecting the circuit breaker housing.

[0080] The heat dissipation device is arranged on the mounting bracket housing 1 and is used for dissipating heat from the circuit breaker.

[0081] The controller 30 is fixedly connected to the side of the mounting bracket housing 1, and the controller 30 is electrically connected to the clamping and fixing device and the heat dissipation device respectively.

[0082] When using this device, the staff places the circuit breaker inside the mounting bracket housing 1. The staff fixes the circuit breaker through the clamping and fixing device, dissipates heat from the circuit breaker through the heat dissipation device. When it is necessary to take out the circuit breaker for maintenance, the ejecting device ejects the circuit breaker, facilitating the staff to take out the circuit breaker.

[0083] The clamping and fixing device includes a mounting box 2, a cylinder 3, a mounting plate 4, a plurality of first springs 5, and a fixing plate 6.

[0084] The mounting box 2 is arranged inside the mounting bracket housing 1, close to the inner top surface of the mounting bracket housing 1. The upper part of the mounting box 2 is fixedly connected to the inner top surface of the mounting bracket housing 1.

[0085] The telescopic rod of the cylinder 3 extends vertically. The cylinder 3 is fixedly connected to the inner top surface of the mounting bracket housing 1, and the telescopic rod of the cylinder 3 vertically penetrates the bottom of the mounting box 2. The telescopic rod of the cylinder 3 is slidably connected to the mounting box 2, and the sliding direction is parallel to the telescopic direction of the telescopic rod of the cylinder 3.

[0086] The mounting plate 4 is perpendicular to the telescopic rod of the cylinder 3, is arranged inside the mounting bracket housing 1, is located below the mounting box 2, and the top of the mounting plate 4 is fixedly connected to the telescopic rod of the cylinder 3.

[0087] A number of first springs 5 are arranged inside the mounting frame housing 1, below the mounting plate 4, and are respectively arranged on both sides of the telescopic rod of the cylinder 3. The upper ends of the number of first springs 5 are respectively fixedly connected to the bottom of the mounting plate 4.

[0088] The fixing plate 6 is parallel to the mounting plate 4, is arranged inside the mounting frame housing 1, below the number of first springs 5, and the top of the fixing plate 6 is fixedly connected to the lower ends of the number of first springs 5.

[0089] When it is necessary to fix the top of the circuit breaker, the staff controls the telescopic rod of the cylinder 3 to move downward through the controller 30. The telescopic rod of the cylinder 3 drives the two movable rods 11 to contract, drives the mounting plate 4 to move downward, the mounting plate 4 drives the number of first springs 5 to move downward, the number of first springs 5 drives the fixing plate 6 to move downward. After the fixing plate 6 contacts the top of the circuit breaker, the mounting plate 4 continues to move downward relative to the fixing plate 6, and then the number of first springs 5 contracts, so that the fixing plate 6 fixes the top of the circuit breaker.

[0090] When it is necessary to release the fixation of the top of the circuit breaker, the staff controls the telescopic rod of the cylinder 3 to move upward through the controller 30. The telescopic rod of the cylinder 3 drives the two movable rods 11 to expand, drives the mounting plate 4 to move upward. The mounting plate 4 first moves upward relative to the fixing plate 6. After the number of first springs 5 is reset, the mounting plate 4 drives the number of first springs 5 to move upward, and the number of first springs 5 drives the fixing plate 6 to move upward, releasing the fixation of the top of the circuit breaker.

[0091] The clamping and fixing device includes two chutes 7, two round rods 8, two sliders 9, two sliding plates 10, two movable rods 11, a number of second springs 12, and two clamping plates 13.

[0092] The extending directions of the two chutes 7 are respectively perpendicular to the telescopic rod of the cylinder 3. The two chutes 7 are arranged at the bottom of the mounting box 2 and are symmetrically arranged on both sides of the telescopic rod of the cylinder 3.

[0093] The axes of the two round rods 8 are respectively parallel to the extending directions of the two chutes 7, are respectively arranged inside the two chutes 7, and the two round rods 8 are respectively fixedly connected to the inner walls of the two chutes 7.

[0094] The two sliders 9 are respectively perpendicular to the two round rods 8, are respectively arranged at the lower parts of the two chutes 7, are respectively sleeved on the outer sides of the two round rods 8, and the two sliders 9 are respectively slidably connected to the two round rods 8, and the sliding directions are both parallel to the axes of the round rods 8.

[0095] The two sliding plates 10 are respectively perpendicular to the axes of the two round rods 8, are arranged inside the mounting frame housing 1, are respectively below the two sliders 9, and the tops of the two sliding plates 10 are respectively fixedly connected to the bottoms of the two sliders 9.

[0096] Two movable rods 11 are obliquely arranged inside the mounting frame housing 1, below the mounting box 2, between the two sliding plates 10, and symmetrically arranged on both sides of the telescopic rod of the cylinder 3. The lower ends of the two movable rods 11 are respectively hinged to the telescopic rod of the cylinder 3, and the upper ends are respectively hinged to the two sliding plates 10. The axes of the hinges are all horizontal and perpendicular to the axis of the round rod 8.

[0097] A number of second springs 12 are respectively arranged inside the mounting frame housing 1, below the fixing plate 6, and on the opposite sides of the two sliding plates 10. The remote ends of the number of second springs 12 are respectively fixedly connected to the two sliding plates 10.

[0098] Two clamping plates 13 are respectively parallel to the two sliding plates 10, arranged inside the mounting frame housing 1, below the fixing plate 6, and between the two sliding plates 10. The two clamping plates 13 are respectively fixedly connected to the opposite ends of the number of second springs 12.

[0099] When it is necessary to clamp and fix the two sides of the circuit breaker, the telescopic rod of the cylinder 3 drives the two movable rods 11 to contract. The two movable rods 11 drive the two sliding plates 10 to move towards each other. The two sliding plates 10 drive the number of second springs 12 to move towards each other. The number of second springs 12 drive the two clamping plates 13 to move towards each other. After the two clamping plates 13 contact the two sides of the circuit breaker, the two sliding plates 10 continue to move towards each other relative to the two clamping plates 13. Furthermore, the number of second springs 12 contract, so that the two clamping plates 13 clamp and fix the circuit breaker.

[0100] When it is necessary to release the clamping and fixing of the two sides of the circuit breaker, the telescopic rod of the cylinder 3 drives the two movable rods 11 to expand. The two movable rods 11 drive the two sliding plates 10 to move in opposite directions. The two sliding plates 10 first move in opposite directions relative to the two clamping plates 13. After the number of second springs 12 are reset, the two sliding plates 10 drive the number of second springs 12 to move in opposite directions. The number of second springs 12 drive the two clamping plates 13 to move in opposite directions, releasing the clamping and fixing of the circuit breaker.

[0101] The number of first springs 5 and the number of second springs 12 are evenly distributed.

[0102] So that the fixing plate 6 and the clamping plate 13 can obtain buffering when fixing the circuit breaker.

[0103] The ejecting device includes a first groove 14, a first cylinder body 15, a first piston 16, a plug rod 17, a placement box 18, a second cylinder body 19, a second piston 20, two first telescopic rods 21, two third springs 22, a second telescopic rod 23, and a connecting pipe 24.

[0104] The first groove 14 is arranged on the inner bottom surface of the mounting frame housing 1, opposite to the fixing plate 6.

[0105] The axis of the first cylinder block 15 is parallel to the telescopic direction of the telescopic rod of the air cylinder 3, and it is arranged inside the first groove 14. The bottom of the first cylinder block 15 is fixedly connected to the inner wall of the first groove 14.

[0106] The axis of the first piston 16 coincides with the axis of the first cylinder block 15, and it is arranged inside the first cylinder block 15. The first piston 16 is slidably connected to the inner wall of the first cylinder block 15, and the sliding direction is parallel to the axis of the first cylinder block 15.

[0107] The axis of the plug rod 17 coincides with the axis of the first cylinder block 15, and it is arranged at the upper part of the first cylinder block 15, above the first piston 16. The lower end of the plug rod 17 is fixedly connected to the top of the first piston 16. The upper end of the plug rod 17 penetrates through the top of the first cylinder block 15, and the plug rod 17 is slidably connected to the top of the first cylinder block 15, and the sliding direction is parallel to the axis of the first cylinder block 15.

[0108] The placement box 18 is perpendicular to the plug rod 17, and it is arranged inside the mounting frame housing 1, above the first groove 14. The bottom of the placement box 18 is fixedly connected to the upper end of the plug rod 17, and the outside of the placement box 18 is slidably connected to the inner wall of the first groove 14, and the sliding direction is parallel to the axis of the first cylinder block 15. The top and side of the placement box 18 have openings.

[0109] The axis of the second cylinder block 19 is parallel to the axis of the round rod 8, and it is arranged inside the mounting frame housing 1, on the side of the chute 7 away from the air cylinder 3. The second cylinder block 19 is fixedly connected to the inner bottom surface of the mounting frame housing 1. A ventilation hole is provided on the side of the second cylinder block 19 close to the placement box 18.

[0110] The axis of the second piston 20 coincides with the axis of the second cylinder block 19, and it is arranged inside the second cylinder block 19. The second piston 20 is slidably connected to the inner wall of the second cylinder block 19, and the sliding direction is parallel to the axis of the second cylinder block 19.

[0111] The telescopic directions of the two first telescopic rods 21 are parallel to the axis of the second cylinder block 19, and they are symmetrically arranged up and down inside the second cylinder block 19, on the side of the second piston 20 away from the placement box 18. One end of each of the two first telescopic rods 21 is fixedly connected to the inner wall of the second cylinder block 19, and the other end is respectively fixedly connected to the second piston 20. The two first telescopic rods 21 are multi-section telescopic rods.

[0112] The two third springs 22 are respectively arranged inside the second cylinder block 19, on the side of the second piston 20 away from the placement box 18, and they are respectively sleeved on the outside of the two first telescopic rods 21. One end of each of the two third springs 22 is fixedly connected to the inner wall of the second cylinder block 19, and the other end is respectively fixedly connected to the second piston 20. The two third springs 22 are in a compressed state.

[0113] The axis of the second telescopic rod 23 coincides with the axis of the second cylinder block 19. It is arranged on the side of the second cylinder block 19 close to the placement box 18 and is located on the side of the second piston 20 close to the placement box 18. One end of the second telescopic rod 23 is fixedly connected to the second piston 20, and the other end passes through the side of the second cylinder block 19 and is fixedly connected to the side of the sliding plate 10. Moreover, the second telescopic rod 23 is slidably connected to the side of the second cylinder block 19, and the sliding direction is parallel to the axis of the second cylinder block 19. The second telescopic rod 23 is in a contracted state.

[0114] The connecting pipe 24 is arranged inside the mounting frame housing 1. One end of the connecting pipe 24 communicates with the side of the second cylinder block 19 far from the placement box 18, and the other end passes through the bottom of the mounting frame housing 1 and communicates with the bottom of the first cylinder block 15.

[0115] When it is necessary to move the circuit breaker downward, when the two movable rods 11 drive the two sliding plates 10 to move towards each other, the two third springs 22 gradually reset. The two third springs 22 drive the second piston 20 close to the placement box 18. After the two third springs 22 are completely reset, the second piston 20 also moves to the inner wall of the side of the second cylinder block 19 close to the placement box 18. Then, when the two sliding plates 10 continue to move towards each other, the sliding plate 10 will stretch the second telescopic rod 23.

[0116] When the two third springs 22 drive the second piston 20 close to the placement box 18, the first piston 16 moves downward, the first piston 16 drives the plug rod 17 to move downward, the plug rod 17 drives the placement box 18 to move downward, and the placement box 18 drives the circuit breaker to move downward, so that the top of the placement box 18 is at the same horizontal plane as the inner bottom surface of the mounting frame housing 1.

[0117] When it is necessary to move the circuit breaker upward to take it out, the two movable rods drive the two sliding plates 10 to move in the opposite direction. The sliding plate 10 first drives the second telescopic rod 23 to contract. After the second telescopic rod 23 finishes contracting, the sliding plate 10 drives the second telescopic rod 23 away from the placement box 18. The second telescopic rod 23 drives the second piston 20 away from the placement box 18, and the second piston 20 compresses the two third springs 22.

[0118] When the second telescopic rod 23 drives the second piston 20 away from the placement box 18, the first piston 16 moves upward, the first piston 16 drives the plug rod 17 to move upward, the plug rod 17 drives the placement box 18 to move upward, and the placement box 18 drives the circuit breaker to move upward. Then, the staff can take out the circuit breaker from the opening of the placement box 18 without having to pull the circuit breaker upward, which is more convenient.

[0119] The second telescopic rod 23 and the sliding plate 10 are fixedly connected by welding.

[0120] So that the sliding plate 10 can stably drive the second telescopic rod 23 to contract.

[0121] The connecting pipe 24 is made of a flexible hose.

[0122] Prevent the connecting pipe 24 from being damaged due to collision.

[0123] The heat dissipation device includes a first motor 25, a fan 26, a second groove 27, a switch 28, and a vertical rod 29.

[0124] The axis of the rotating shaft of the first motor 25 is parallel to the axis of the second cylinder block 19, and it is arranged inside the mounting frame housing 1, on the side of the sliding plate 10 away from the placement box 18. The housing of the first motor 25 is fixedly connected to the side of the sliding plate 10.

[0125] The axis of the fan 26 coincides with the axis of the rotating shaft of the first motor 25. It is arranged inside the mounting frame housing 1, on the side of the first motor 25 away from the placement box 18, and is sleeved outside the rotating shaft of the first motor 25. The fan 26 is fixedly connected to the rotating shaft of the first motor 25, and its rotation axis coincides with its own axis.

[0126] The second groove 27 is arranged on the bottom surface of the mounting plate 4 and is above the fixing plate 6.

[0127] The switch 28 is arranged inside the second groove 27, and the switch 28 is fixedly connected to the inner top surface of the second groove 27. The switch 28 is used to control the start and stop of the first motor 25.

[0128] The axis of the vertical rod 29 coincides with the axis of the first cylinder block 15. It is arranged at the lower part of the second groove 27 and is above the fixing plate 6. The lower end of the vertical rod 29 is fixedly connected to the top of the fixing plate 6.

[0129] When heat dissipation is required for the circuit breaker, the mounting plate 4 continues to move downward relative to the fixing plate 6. The mounting plate 4 drives the switch 28 to move downward relative to the fixing plate 6. Then, the vertical rod 29 contacts and presses the switch 28. The switch 28 transmits a signal to the controller 30. Then, the controller 30 controls the first motor 25 to start. The rotating shaft of the first motor 25 drives the fan 26 to rotate. The rotation of the fan 26 accelerates the air flow around the circuit breaker to dissipate heat from the circuit breaker.

[0130] When heat dissipation is not required for the circuit breaker, the mounting plate 4 moves upward relative to the fixing plate 6. The mounting plate 4 drives the switch 28 to move upward relative to the fixing plate 6. Then, the switch 28 moves away from the vertical rod 29 and is released from the pressed state. Then, the switch 28 transmits a signal to the controller 30. Then, the controller 30 controls the first motor 25 to stop working, thus saving electric energy.

[0131] The placement box 18 and the plug rod 17 are fixedly connected by bolts.

[0132] Facilitate the replacement of the placement box 18.

[0133] An insulating layer is provided on the bottom of the fixing plate 6, on the opposite side parts of the two clamping plates 13, and on the inner wall of the placement box 18.

[0134] Prevent the current of the circuit breaker from being transmitted out through the fixing plate 6, the clamping plates 13, and the placement box 18.

[0135] Working principle: When installing the circuit breaker onto the mounting frame, the staff places the bottom of the circuit breaker inside the placement box 18. Then, the staff controls the telescopic rod of the cylinder 3 to move downward through the controller 30. The telescopic rod of the cylinder 3 drives the two movable rods 11 to contract, driving the mounting plate 4 to move downward. The mounting plate 4 drives a number of first springs 5 to move downward. A number of first springs 5 drive the fixing plate 6 to move downward. After the fixing plate 6 contacts the top of the circuit breaker, the mounting plate 4 continues to move downward relative to the fixing plate 6. Furthermore, a number of first springs 5 contract, causing the fixing plate 6 to fix the circuit breaker.

[0136] When the telescopic rod of the cylinder 3 drives the two movable rods 11 to contract, the two movable rods 11 drive the two sliding plates 10 to move towards each other. The two sliding plates 10 drive a number of second springs 12 to move towards each other. A number of second springs 12 drive the two clamping plates 13 to move towards each other. After the two clamping plates 13 contact the two side parts of the circuit breaker, the two sliding plates 10 continue to move towards each other relative to the two clamping plates 13. Furthermore, a number of second springs 12 contract, causing the two clamping plates 13 to clamp and fix the circuit breaker.

[0137] When the two movable rods 11 drive the two sliding plates 10 to move towards each other, the two third springs 22 gradually reset. The two third springs 22 drive the second piston 20 to approach the placement box 18. After the two third springs 22 are fully reset, the second piston 20 also moves to the inner wall of the side of the second cylinder 19 close to the placement box 18. Furthermore, when the two sliding plates 10 continue to move towards each other, the sliding plate 10 will stretch the second telescopic rod 23.

[0138] When the two third springs 22 drive the second piston 20 to approach the placement box 18, the first piston 16 moves downward. The first piston 16 drives the plug rod 17 to move downward. The plug rod 17 drives the placement box 18 to move downward. The placement box 18 drives the circuit breaker to move downward, making the top of the placement box 18 be at the same horizontal plane as the inner bottom surface of the mounting frame housing 1.

[0139] When the mounting plate 4 continues to move downward relative to the fixing plate 6, the mounting plate 4 drives the switch 28 to move downward relative to the fixing plate 6. Furthermore, the vertical rod 29 contacts and presses the switch 28. The switch 28 transmits a signal to the controller 30. Furthermore, the controller 30 controls the first motor 25 to start. The rotating shaft of the first motor 25 drives the fan 26 to rotate. The rotation of the fan 26 accelerates the air flow around the circuit breaker to dissipate heat from the circuit breaker.

[0140] When it is necessary to take out the maintenance circuit breaker, the staff controls the telescopic rod of the cylinder 3 to move upward through the controller 30. The telescopic rod of the cylinder 3 drives the two movable rods 11 to open, driving the mounting plate 4 to move upward. The mounting plate 4 first moves upward relative to the fixed plate 6. After several first springs 5 are reset, the mounting plate 4 drives several first springs 5 to move upward, and several first springs 5 drive the fixed plate 6 to move upward, releasing the fixation of the circuit breaker.

[0141] When the telescopic rod of the cylinder 3 drives the two movable rods 11 to open, the two movable rods 11 drive the two sliding plates 10 to move in opposite directions. The two sliding plates 10 first move in opposite directions relative to the two clamping plates 13. After several second springs 12 are reset, the two sliding plates 10 drive several second springs 12 to move in opposite directions, and several second springs 12 drive the two clamping plates 13 to move in opposite directions, releasing the clamping fixation of the circuit breaker.

[0142] When the two movable rods 11 drive the two sliding plates 10 to move in opposite directions, the sliding plate 10 first drives the second telescopic rod 23 to contract. After the second telescopic rod 23 finishes contracting, the sliding plate 10 drives the second telescopic rod 23 away from the placement box 18. The second telescopic rod 23 drives the second piston 20 away from the placement box 18, and the second piston 20 compresses the two third springs 22.

[0143] When the second telescopic rod 23 drives the second piston 20 away from the placement box 18, the first piston 16 moves upward. The first piston 16 drives the plug rod 17 to move upward, and the plug rod 17 drives the placement box 18 to move upward. The placement box 18 drives the circuit breaker to move upward. Then the staff can take out the circuit breaker from the opening of the placement box 18 without having to pull the circuit breaker upward, which is more convenient.

[0144] When the mounting plate 4 moves upward relative to the fixed plate 6, the mounting plate 4 drives the switch 28 to move upward relative to the fixed plate 6. Then the switch 28 moves away from the vertical rod 29, releasing the pressed state. Then the switch 28 transmits a signal to the controller 30. Then the controller 30 controls the first motor 25 to stop working, thereby saving electrical energy.

[0145] The above embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

Claims

1. A circuit breaker insulation mounting bracket, characterized in that: It includes a mounting frame housing (1), a clamping and fixing device, an ejection device, a heat dissipation device, and a controller (30); The mounting frame housing (1) is horizontally arranged and fixedly connected to the wall surface; The clamping and fixing device is arranged on the mounting frame housing (1) and is used for clamping and fixing a circuit breaker; The clamping and fixing device includes two chutes (7), two round rods (8), two sliders (9), two sliding plates (10), two movable rods (11), a number of second springs (12), and two clamping plates (13); The two movable rods (11) are obliquely arranged inside the mounting frame housing (1), below the mounting box (2), between the two sliding plates (10), and symmetrically arranged on both sides of the telescopic rod of the air cylinder (3). The lower ends of the two movable rods (11) are respectively hinged to the telescopic rod of the air cylinder (3), and the upper ends are respectively hinged to the two sliding plates (10). The axes of the hinges are all horizontal and perpendicular to the axis of the round rod (8); The two clamping plates (13) are respectively parallel to the two sliding plates (10), arranged inside the mounting frame housing (1), below the fixing plate (6), and between the two sliding plates (10). The two clamping plates (13) are respectively fixedly connected to the opposite ends of a number of the second springs (12); The ejection device is arranged on the mounting frame housing (1) and is used for ejecting the circuit breaker housing; The ejection device includes a first groove (14), a first cylinder body (15), a first piston (16), a plug rod (17), a placement box (18), a second cylinder body (19), a second piston (20), two first telescopic rods (21), two third springs (22), a second telescopic rod (23), and a connecting pipe (24); The first groove (14) is arranged on the inner bottom surface of the mounting frame housing (1) and is arranged opposite to the fixing plate (6); The axis of the first cylinder body (15) is parallel to the telescopic direction of the telescopic rod of the air cylinder (3), arranged inside the first groove (14), and the bottom of the first cylinder body (15) is fixedly connected to the inner wall of the first groove (14); The axis of the first piston (16) coincides with the axis of the first cylinder body (15) and is arranged inside the first cylinder body (15); The axis of the plug rod (17) coincides with the axis of the first cylinder block (15), is arranged at the upper part of the first cylinder block (15), above the first piston (16). The lower end of the plug rod (17) is fixedly connected to the top of the first piston (16), and the upper end of the plug rod (17) penetrates through the top of the first cylinder block (15). The placement box (18) is perpendicular to the plug rod (17), is arranged inside the mounting frame housing (1), above the first groove (14), and the bottom of the placement box (18) is fixedly connected to the upper end of the plug rod (17). The axis of the second cylinder block (19) is parallel to the axis of the round rod (8), is arranged inside the mounting frame housing (1), on the side of the chute (7) away from the cylinder (3), and the second cylinder block (19) is fixedly connected to the inner bottom surface of the mounting frame housing (1). An air vent is arranged on the side of the second cylinder block (19) close to the placement box (18). The axis of the second piston (20) coincides with the axis of the second cylinder block (19), and is arranged inside the second cylinder block (19). The telescopic directions of the two first telescopic rods (21) are parallel to the axis of the second cylinder block (19), are symmetrically arranged up and down inside the second cylinder block (19), on the side of the second piston (20) away from the placement box (18). The two third springs (22) are respectively arranged inside the second cylinder block (19), on the side of the second piston (20) away from the placement box (18), and are respectively sleeved on the outer sides of the two first telescopic rods (21). The axis of the second telescopic rod (23) coincides with the axis of the second cylinder block (19), is arranged on the side of the second cylinder block (19) close to the placement box (18), on the side of the second piston (20) close to the placement box (18). The connecting pipe (24) is arranged inside the mounting frame housing (1). One end of the connecting pipe (24) is communicated with the side of the second cylinder block (19) away from the placement box (18), and the other end penetrates through the bottom of the mounting frame housing (1) and is communicated with the bottom of the first cylinder block (15). The heat dissipation device is arranged on the mounting frame housing (1) and is used for dissipating heat from the circuit breaker. The controller (30) is fixedly connected to the side of the mounting frame housing (1), and the controller (30) is electrically connected to the clamping and fixing device and the heat dissipation device respectively.

2. The insulating mounting bracket of a circuit breaker according to claim 1, characterized in that The clamping and fixing device includes a mounting box (2), a cylinder (3), a mounting plate (4), a plurality of first springs (5), and a fixing plate (6). The mounting box (2) is arranged inside the mounting frame housing (1), close to the inner top surface of the mounting frame housing (1), and the upper part of the mounting box (2) is fixedly connected to the inner top surface of the mounting frame housing (1). The telescopic rod of the cylinder (3) extends vertically. The cylinder (3) is fixedly connected to the inner top surface of the mounting frame housing (1), and the telescopic rod of the cylinder (3) vertically penetrates the bottom of the mounting box (2). The telescopic rod of the cylinder (3) is slidably connected to the mounting box (2), and the sliding direction is parallel to the telescopic direction of the telescopic rod of the cylinder (3). The mounting plate (4) is perpendicular to the telescopic rod of the cylinder (3), is arranged inside the mounting frame housing (1), is below the mounting box (2), and the top of the mounting plate (4) is fixedly connected to the telescopic rod of the cylinder (3). A plurality of the first springs (5) are arranged inside the mounting frame housing (1), are below the mounting plate (4), and are respectively arranged on both sides of the telescopic rod of the cylinder (3). The upper ends of the plurality of the first springs (5) are respectively fixedly connected to the bottom of the mounting plate (4). The fixing plate (6) is parallel to the mounting plate (4), is arranged inside the mounting frame housing (1), is below the plurality of the first springs (5), and the top of the fixing plate (6) is fixedly connected to the lower ends of the plurality of the first springs (5).

3. The insulating mounting bracket of a circuit breaker according to claim 2, characterized in that The extending directions of the two chutes (7) are respectively perpendicular to the telescopic rod of the cylinder (3). The two chutes (7) are arranged at the bottom of the mounting box (2) and are symmetrically arranged on both sides of the telescopic rod of the cylinder (3). The axes of the two round rods (8) are respectively parallel to the extending directions of the two chutes (7), are respectively arranged inside the two chutes (7), and the two round rods (8) are respectively fixedly connected to the inner walls of the two chutes (7). The two sliders (9) are respectively perpendicular to the two round rods (8), are respectively arranged at the lower parts of the two chutes (7), are respectively sleeved on the outer sides of the two round rods (8), and the two sliders (9) are respectively slidably connected to the two round rods (8), and the sliding directions are both parallel to the axes of the round rods (8). The two sliding plates (10) are respectively perpendicular to the axes of the two round rods (8), are arranged inside the mounting frame housing (1), are respectively below the two sliders (9), and the tops of the two sliding plates (10) are respectively fixedly connected to the bottoms of the two sliders (9). A plurality of the second springs (12) are respectively arranged inside the mounting frame housing (1), are below the fixing plate (6), and are on the opposite sides of the two sliding plates (10). The remote ends of the plurality of the second springs (12) are respectively fixedly connected to the two sliding plates (10).

4. The insulating mounting bracket of a circuit breaker according to claim 3, characterized in that The plurality of the first springs (5) and the plurality of the second springs (12) are evenly distributed.

5. The insulating mounting bracket of a circuit breaker according to claim 3, characterized in that The first piston (16) is slidably connected to the inner wall of the first cylinder body (15), and the sliding direction is parallel to the axis of the first cylinder body (15). The plug rod (17) is slidably connected to the top of the first cylinder body (15), and the sliding direction is parallel to the axis of the first cylinder body (15). The exterior of the placement box (18) is slidably connected to the inner wall of the first groove (14), and the sliding direction is parallel to the axis of the first cylinder body (15). The top and side of the placement box (18) are provided with openings; The second piston (20) is slidably connected to the inner wall of the second cylinder body (19), and the sliding direction is parallel to the axis of the second cylinder body (19); One end of each of the two first telescopic rods (21) is fixedly connected to the inner wall of the second cylinder body (19), and the other end is fixedly connected to the second piston (20). The two first telescopic rods (21) are multi-section telescopic rods; One end of each of the two third springs (22) is fixedly connected to the inner wall of the second cylinder body (19), and the other end is fixedly connected to the second piston (20). The two third springs (22) are in a compressed state; One end of the second telescopic rod (23) is fixedly connected to the second piston (20), and the other end penetrates through the side of the second cylinder body (19) and is fixedly connected to the side of the sliding plate (10). Moreover, the second telescopic rod (23) is slidably connected to the side of the second cylinder body (19), and the sliding direction is parallel to the axis of the second cylinder body (19). The second telescopic rod (23) is in a contracted state.

6. The insulating mounting bracket of a circuit breaker according to claim 5, characterized in that : The second telescopic rod (23) is fixedly connected to the sliding plate (10) by welding.

7. The insulating mounting bracket of a circuit breaker according to claim 5, characterized in that : The connecting pipe (24) is made of a flexible hose.

8. The insulating mounting bracket of a circuit breaker according to claim 5, characterized in that : The heat dissipation device includes a first motor (25), a fan (26), a second groove (27), a switch (28), and a vertical rod (29); The axis of the rotating shaft of the first motor (25) is parallel to the axis of the second cylinder body (19), and it is arranged inside the housing of the mounting frame (1), on the side of the sliding plate (10) away from the placement box (18). The housing of the first motor (25) is fixedly connected to the side of the sliding plate (10); The axis of the fan (26) coincides with the axis of the rotating shaft of the first motor (25), and it is arranged inside the housing of the mounting frame (1), on the side of the first motor (25) away from the placement box (18). It is sleeved outside the rotating shaft of the first motor (25). The fan (26) is fixedly connected to the rotating shaft of the first motor (25), and its rotation axis coincides with its own axis; The second groove (27) is arranged on the bottom surface of the mounting plate (4), above the fixing plate (6); The switch (28) is arranged inside the second groove (27), and the switch (28) is fixedly connected to the inner top surface of the second groove (27). The switch (28) is used to control the start and stop of the first motor (25); The axis of the vertical rod (29) coincides with the axis of the first cylinder body (15), and it is arranged at the lower part of the second groove (27), above the fixing plate (6). The lower end of the vertical rod (29) is fixedly connected to the top of the fixing plate (6).

9. The insulating mounting bracket of a circuit breaker according to claim 8, characterized in that : The placement box (18) is fixedly connected to the plug rod (17) by bolts.

10. The insulating mounting bracket of a circuit breaker according to claim 8, characterized in that :An insulating layer is provided on the bottom of the fixed plate (6), on the opposite side portions of the two clamping plates (13), and on the inner wall of the placement box (18).

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