Replacement device for arc extinguish chamber of T-shaped circuit breaker

Abstract

The invention discloses a T-type circuit breaker arc extinguish chamber replacement device, and relates to the technical field of transformer substation maintenance, the T-type circuit breaker arc extinguish chamber replacement device comprises a bottom plate and a jacking assembly, the bottom of the bottom plate is connected with a mounting assembly, the jacking assembly is arranged at the top of the bottom plate, and the jacking assembly comprises a servo motor, an RV speed reducer, a steering gear, a lead screw lifter, a jacking plate and a guider. The end of the servo motor is connected with an RV speed reducer, and the two ends of the RV speed reducer are connected with steering gears. According to the replacement device for the arc extinguish chamber of the T-shaped circuit breaker, through the arrangement of the jacking assembly, after the replacement device is fixed to a support of the T-shaped circuit breaker through the installation assembly and the arc extinguish chamber is fixed through the locking mechanism, only a servo motor needs to be started, the lead screw lifters on the two sides can be controlled to work at the same time through an RV speed reducer and a steering gear, a jacking plate is made to move upwards, and then the replacement device is replaced. Therefore, the arc extinguish chamber is ejected and dismounted from the T-shaped circuit breaker, and the stability of the jacking plate in the moving process is improved through the guider.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer substation maintenance, in particular to a T-type circuit breaker arc extinguishing chamber replacement device. Background Art

[0002] A circuit breaker is a switching device that can close, carry and interrupt current under normal circuit conditions and can close, carry and interrupt current under abnormal circuit conditions within a specified time. The removal of the arc extinguishing chamber on the T-shaped circuit breaker, that is, the porcelain column switch arc extinguishing device, is one of the key tasks in the substation maintenance process.

[0003] The current method used is crane lifting, but there is often a busbar above the porcelain column switch, and the busbar must be powered off before removal. In addition, since the arc extinguishing device of the porcelain column switch is relatively heavy, about 2T plus friction, the lifting weight must be greater than 3.5T. Due to the limitation of operating space, the crane arm has a large span and elevation angle, and the lifting process causes a large elastic deformation of the crane arm. The moment the porcelain column switch is separated from the support, the crane arm rebounds greatly, resulting in a low overall safety problem.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a T-type circuit breaker arc extinguishing chamber replacement device is provided. Summary of the Invention

[0005] The object of the present invention is to provide a T-type circuit breaker arc extinguishing chamber replacement device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a T-type circuit breaker arc chamber replacement device, comprising a base plate and a lifting assembly, wherein the bottom of the base plate is connected to a mounting assembly, and the lifting assembly is arranged on the top of the base plate, and the lifting assembly comprises a servo motor, an RV reducer, a steering gear, a screw lifter, a lifting plate and a guide, the end of the servo motor is connected to the RV reducer, and the two ends of the RV reducer are connected to the steering gear, the end of the steering gear is connected to the screw lifter, and the top of the screw lifter is fixed with a lifting plate, and the bottom of the lifting plate is connected to the guide.

[0007] Furthermore, the bottom plate is U-shaped, and two screw lifts are symmetrically arranged about the center line of the bottom plate.

[0008] Furthermore, the guide is fixedly connected to the base plate, and there are four guides.

[0009] Furthermore, the mounting assembly includes a movable bracket, an adjusting screw and a fixed bracket. The bottom of the base plate is fixed with a movable bracket, and the four ends of the bottom of the movable bracket are threadedly connected to the adjusting screw, and the bottom of the adjusting screw is rotatably connected to the fixed bracket.

[0010] Furthermore, a locking assembly is arranged on the top of the jacking plate, and the locking assembly includes a connecting plate and left and right slide rails. A connecting plate is arranged on the top of the jacking plate, and left and right slide rails are fixed to the four ends of the top of the connecting plate.

[0011] Furthermore, the locking assembly also includes left and right slides and a first tensioner. The tops of the left and right slide rails are slidably connected to the left and right slides, and the front ends of the left and right slides are connected to the first tensioner.

[0012] Furthermore, the locking assembly also includes front and rear slide rails and front and rear slide seats. The front and rear slide rails are fixed to the tops of the left and right slide seats, and the front and rear ends of the tops of the front and rear slide rails are slidably connected to the front and rear slide seats.

[0013] Furthermore, the locking assembly also includes a second tensioner and an octagonal locker. The second tensioner is placed on one side of the front and rear slides, and the octagonal locker is fixed on the top of the front and rear slides.

[0014] The present invention provides a T-type circuit breaker arc extinguishing chamber replacement device, which has the following beneficial effects:

[0015] 1. The present invention utilizes a lifting assembly. After the replacement device is fixed to the bracket of the T-shaped circuit breaker using the mounting assembly and the arc extinguishing chamber is secured using a locking mechanism, the servo motor is simply started to control the screw lifters on both sides to operate simultaneously via the RV reducer and steering gear, causing the lifting plate to move upward, thereby ejecting and removing the arc extinguishing chamber from the T-shaped circuit breaker. The guide improves the stability of the lifting plate during movement, resulting in less overall shaking and greater safety compared to existing methods of lifting and removing the arc extinguishing chamber using a crane.

[0016] 2. The present invention, through the setting of the locking assembly, can use the octagonal locker to lock and fix the mounting plate on the arc extinguishing chamber, thereby reducing the shaking between the arc extinguishing chamber and the locking assembly. At the same time, before locking, the left and right slide rails, left and right slide seats, front and rear slide rails, and front and rear slide seats can be used to adjust the locking position, and the first tensioner and the second tensioner can be used to adjust the spacing and the width of the octagonal lockers on both sides, so as to fix various types of arc extinguishing chambers, which is conducive to improving the scope of use of the replacement device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the arc extinguishing chamber replacement device of a T-type circuit breaker of the present invention;

[0018] Figure 2 This is a front view structural diagram of the T-type circuit breaker arc extinguishing chamber replacement device during installation of the present invention;

[0019] Figure 3This is a schematic diagram of the three-dimensional structure of the lifting assembly of the arc extinguishing chamber replacement device of the T-type circuit breaker of the present invention;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the locking assembly of the arc extinguishing chamber replacement device of the T-type circuit breaker of the present invention.

[0021] In the figure: 1. Base plate; 2. Mounting assembly; 201. Movable bracket; 202. Adjusting screw; 203. Fixed bracket; 3. Lifting assembly; 301. Servo motor; 302. RV reducer; 303. Steering gear; 304. Screw lift; 305. Lifting plate; 306. Guide; 4. Locking assembly; 401. Connecting plate; 402. Left and right slide rails; 403. Left and right slide seats; 404. First tensioner; 405. Front and rear slide rails; 406. Front and rear slide seats; 407. Second tensioner; 408. Octagonal locker. DETAILED DESCRIPTION

[0022] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0023] like Figures 1 to 3 As shown, the arc extinguishing chamber replacement device of T-type circuit breaker includes a base plate 1 and a lifting assembly 3. The bottom of the base plate 1 is connected to the installation assembly 2, and the installation assembly 2 includes a movable bracket 201, an adjusting screw 202 and a fixed bracket 203. The bottom of the base plate 1 is fixed with a movable bracket 201, and the four ends of the bottom of the movable bracket 201 are threadedly connected to the adjusting screw 202, and the bottom of the adjusting screw 202 is rotatably connected to the fixed bracket 203. The device is installed on the bracket of the T-shaped circuit breaker on site using the fixed bracket 203. The movable bracket 201 can be moved up and down along the fixed bracket 203 by adjusting the screw 202. The lifting assembly 3 is arranged on the top of the base plate 1. The lifting assembly 3 includes a servo motor 301, an RV reducer 302, a steering gear 303, a screw lift 304, a lifting plate 305 and a guide 306. The servo The end of the servo motor 301 is connected to the RV reducer 302, and the two ends of the RV reducer 302 are connected to the diverter 303, the end of the diverter 303 is connected to the screw lift 304, and the top of the screw lift 304 is fixed with a lifting plate 305, and the bottom of the lifting plate 305 is connected to a guide 306. The base plate 1 is U-shaped, and two screw lifts 304 are symmetrically arranged about the center line of the base plate 1. By starting the servo motor 301, the screw lifts 304 on both sides can be controlled to work simultaneously through the RV reducer 302 and the diverter 303, so that the lifting plate 305 moves upward, thereby ejecting and removing the arc extinguishing chamber from the T-shaped circuit breaker. The guide 306 is fixedly connected to the base plate 1, and there are four guides 306. The guide 306 is used to improve the stability of the lifting plate 305 during movement.

[0024] like Figure 4 As shown, a locking assembly 4 is arranged on the top of the jacking plate 305, and the locking assembly 4 includes a connecting plate 401 and left and right slide rails 402. A connecting plate 401 is arranged on the top of the jacking plate 305, and the left and right slide rails 402 are fixed to the four ends of the top of the connecting plate 401. The locking assembly 4 also includes left and right slides 403 and a first tensioner 404. The tops of the left and right slide rails 402 are slidably connected to the left and right slides 403, and the front ends of the left and right slides 403 are connected to the first tensioner 404. The locking assembly 4 also includes front and rear slide rails 405 and front and rear slides 406. The tops of the left and right slides 403 are fixed to the front and rear slide rails 405, and the front and rear ends of the tops of the front and rear slide rails 405 are slidably connected to the front and rear slides 406. The locking position can be adjusted by the left and right slide rails 402, the left and right slide seats 403, the front and rear slide rails 405, and the front and rear slide seats 406. The locking assembly 4 also includes a second tensioner 407 and an octagonal locker 408. The second tensioner 407 is placed on one side of the front and rear slide seats 406, and the octagonal locker 408 is fixed on the top of the front and rear slide seats 406. The octagonal locker 408 is used to lock and fix the mounting plate on the arc extinguishing chamber to reduce the shaking between the arc extinguishing chamber and the locking assembly 4. The first tensioner 404 and the second tensioner 407 can adjust the spacing and the width of the octagonal lockers 408 on both sides, so as to fix arc extinguishing chambers of various models.

[0025] In summary, when using the T-type circuit breaker arc chamber replacement device, first follow the Figures 1 to 4 The structure shown in FIG1 is to first fix the fixed bracket 203 on the bracket of the on-site T-shaped circuit breaker, and then adjust the movable bracket 201 up and down along the fixed bracket 203 by adjusting the screw 202 as needed to adjust the position of the jacking assembly 3 and the locking assembly 4. Then, the position of the octagonal locker 408 can be adjusted by the left and right slide rails 402, the left and right slide seats 403, the front and rear slide rails 405, and the front and rear slide seats 406. The first tensioner 404 and the second tensioner 407 are used to adjust the position of the octagonal locker 408. The spacing and width of the octagonal lockers 408 on both sides can be adjusted, and then the octagonal lockers 408 are used to lock and fix the mounting plate on the arc extinguishing chamber. Finally, the servo motor 301 is started, and the screw lifts 304 on both sides can be controlled to work simultaneously through the RV reducer 302 and the steering gear 303, so that the lifting plate 305 moves upward, thereby ejecting the arc extinguishing chamber from the T-shaped circuit breaker, and the stability of the lifting plate 305 during movement is improved through the guide 306.

[0026] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. A T-type circuit breaker arc chamber replacement device, comprising a base plate (1) and a lifting assembly (3), characterized in that: The bottom of the base plate (1) is connected to a mounting assembly (2); the lifting assembly (3) is arranged on the top of the base plate (1); the lifting assembly (3) comprises a servo motor (301), an RV reducer (302), a steering gear (303), a screw lift (304), a lifting plate (305) and a guide (306); the end of the servo motor (301) is connected to the RV reducer (302), and the two ends of the RV reducer (302) are connected to the steering gear (303); the end of the steering gear (303) is connected to the screw lift (304), and the top of the screw lift (304) is fixed with a lifting plate (305), and the bottom of the lifting plate (305) is connected to the guide (306).

2. The arc extinguishing chamber replacement device for a T-type circuit breaker according to claim 1, characterized in that: The bottom plate (1) is U-shaped, and two screw lifts (304) are symmetrically arranged about the center line of the bottom plate (1).

3. The arc extinguishing chamber replacement device for a T-type circuit breaker according to claim 1, characterized in that: The guide (306) is fixedly connected to the bottom plate (1), and the number of the guides (306) is four.

4. The arc extinguishing chamber replacement device for a T-type circuit breaker according to claim 1, characterized in that: The mounting assembly (2) comprises a movable bracket (201), an adjusting screw (202) and a fixed bracket (203); the movable bracket (201) is fixed to the bottom of the base plate (1); the four ends of the bottom of the movable bracket (201) are threadedly connected to the adjusting screw (202); and the bottom of the adjusting screw (202) is rotatably connected to the fixed bracket (203).

5. The arc extinguishing chamber replacement device for a T-type circuit breaker according to claim 4, characterized in that: A locking assembly (4) is arranged on the top of the lifting plate (305), and the locking assembly (4) comprises a connecting plate (401) and left and right slide rails (402). A connecting plate (401) is arranged on the top of the lifting plate (305), and left and right slide rails (402) are fixed to the four ends of the top of the connecting plate (401).

6. The arc extinguishing chamber replacement device for a T-type circuit breaker according to claim 5, characterized in that: The locking assembly (4) further comprises left and right slide seats (403) and a first tensioner (404); the tops of the left and right slide rails (402) are slidably connected to the left and right slide seats (403), and the front ends of the left and right slide seats (403) are connected to the first tensioner (404).

7. The arc extinguishing chamber replacement device for a T-type circuit breaker according to claim 6, characterized in that: The locking assembly (4) further comprises front and rear slide rails (405) and front and rear slide seats (406); the front and rear slide rails (405) are fixed on the top of the left and right slide seats (403); and the front and rear slide seats (406) are slidably connected at the front and rear ends of the top of the front and rear slide rails (405).

8. The arc extinguishing chamber replacement device for a T-type circuit breaker according to claim 7, characterized in that: The locking assembly (4) further comprises a second tensioner (407) and an octagonal locker (408); the second tensioner (407) is arranged on one side of the front and rear slides (406), and the octagonal locker (408) is fixed on the top of the front and rear slides (406).

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