Liftable tank-type circuit breaker

Abstract

The utility model discloses a liftable tank-type circuit breaker, and relates to the field of tank-type circuit breakers, the liftable tank-type circuit breaker comprises a rack, an arc extinguish chamber, a connecting sleeve, a case, a lifting assembly and a limiting assembly, a motor drives one threaded rod to rotate, and the threaded rod drives a transmission bevel gear to rotate; the transmission bevel gear drives the other three threaded rods to rotate through the driven bevel gear and the rotating shaft, and finally the four threaded rods rotate at the same time, so that the lifting plate is driven to ascend and descend, height adjustment is conveniently conducted according to the installation environment, the lifting plate drives the arc extinguish chamber to ascend and descend, and after the arc extinguish chamber ascends and descends to the designated position, the rotating block is rotated to rotate. And the threaded pin drives the inserting plate to retract, so that the inserting plate is inserted into the inserting groove in the outer surface of the supporting frame, and the limiting effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of tank-type circuit breakers, and in particular to a liftable tank-type circuit breaker. Background Technology

[0002] A tank-type circuit breaker is a type of high-voltage switchgear widely used in power systems to control and protect power lines. It uses sulfur hexafluoride gas as an insulating and arc-extinguishing medium, and has good insulation performance and arc-extinguishing capability.

[0003] The assembly of tank-type circuit breakers is generally completed at the factory. After being transported to the designated location, the circuit breaker is lifted to the designated position by a crane and then installed. After installation, electrical inspection, mechanical inspection and other necessary tests are required before the installation is finally completed.

[0004] The support frame of the existing tank-type circuit breaker is completely fixed during installation. This means that the height of the circuit breaker after it is installed in the designated position is fixed from the factory. It is impossible to adjust the height according to the installation environment afterward, which is quite inconvenient to use. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the problems existing in the prior art, this utility model provides a liftable tank-type circuit breaker.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: a liftable tank-type circuit breaker, including a frame, an arc-extinguishing chamber is provided inside the frame, a connecting sleeve is provided on the outer surface of the arc-extinguishing chamber, a housing is provided on the outer surface of the frame, a lifting assembly is provided below the arc-extinguishing chamber, and limit components are provided on both sides of the lifting assembly;

[0009] The lifting assembly includes four support frames fixedly connected inside the frame. Threaded rods are movably connected to the inside of each support frame via bearings. A lifting plate is threadedly connected to the outer surface of each threaded rod. A transmission bevel gear is fixedly connected to the outer surface of each threaded rod. Two mutually perpendicular driven bevel gears are meshed with the outer surface of each transmission bevel gear. A transmission shaft is fixedly connected between the two driven bevel gears on the same side. The transmission shaft is movably connected inside the frame. The arc-extinguishing chamber is fixedly installed on the upper surface of the lifting plate.

[0010] The limiting assembly includes a connecting plate fixedly connected to the side of the lifting plate, a connecting disc movably connected to the outer surface of the connecting plate, a rotating block fixedly connected to the side of the connecting disc away from the lifting plate, a threaded pin connected internally to the rotating block, and a plug-in plate fixedly connected to the end of the threaded pin near the connecting plate through the connecting plate.

[0011] In a preferred embodiment of the liftable tank-type circuit breaker described in this utility model, a motor is fixedly connected inside the frame, and the output end of the motor is fixedly connected to the bottom end of one of the threaded rods.

[0012] In a preferred embodiment of the liftable tank-type circuit breaker described in this utility model, the thread directions of two adjacent threaded rods are opposite.

[0013] In a preferred embodiment of the liftable tank-type circuit breaker described in this utility model, two adjacent driven bevel gears do not contact each other.

[0014] In a preferred embodiment of the liftable tank-type circuit breaker described in this utility model, the support frame has a rectangular groove inside for lifting the threaded pin, and the inner side of the support frame has several slots that mate with the plug-in plate.

[0015] In a preferred embodiment of the liftable tank circuit breaker described in this utility model, two limiting pins are fixedly connected to the side of the plug plate near the connecting plate, and a limiting groove for the lifting pins is provided on the inner side of the lifting plate, wherein the limiting pins are always kept inside the limiting groove.

[0016] (III) Beneficial Effects

[0017] This utility model provides a liftable tank-type circuit breaker. It has the following advantages:

[0018] 1. The motor drives one of the threaded rods to rotate, which in turn drives the transmission bevel gear to rotate. The transmission bevel gear, through the driven bevel gear and the rotating shaft, drives the other three threaded rods to rotate, ultimately achieving simultaneous rotation of all four threaded rods. This enables the lifting plate to be raised or lowered, facilitating height adjustment according to the installation environment.

[0019] 2. The lifting plate drives the arc-extinguishing chamber to rise and fall. After rising to the designated position, the rotating block is rotated to cause the threaded pin to retract the plug plate, so that the plug plate is inserted into the slot on the outer surface of the support frame to achieve the limiting effect. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is a structural schematic diagram of the lifting component of this utility model.

[0023] Figure 3 This is a utility model Figure 2 A magnified structural diagram of A in the diagram.

[0024] Figure 4 This is an exploded structural diagram of the limiting component of this utility model.

[0025] Figure 5 This is a schematic diagram of the structure of the limiting pin of this utility model.

[0026] In the diagram, 1 is the chassis; 2 is the frame; 3 is the lifting assembly; 301 is the lifting plate; 302 is the support frame; 303 is the drive shaft; 304 is the threaded rod; 305 is the driven bevel gear; 306 is the transmission bevel gear; 4 is the limiting assembly; 401 is the connecting plate; 402 is the threaded pin; 403 is the plug plate; 404 is the limiting pin; 405 is the connecting disc; 406 is the rotating block; 5 is the arc extinguishing chamber; and 6 is the connecting sleeve. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0028] Example 1

[0029] Reference Figure 1 , Figure 2 and Figure 3This is the first embodiment of the present invention, which provides a liftable tank-type circuit breaker, including a frame 2, an arc-extinguishing chamber 5 inside the frame 2, a connecting sleeve 6 on the outer surface of the arc-extinguishing chamber 5, a housing 1 on the outer surface of the frame 2, a lifting assembly 3 below the arc-extinguishing chamber 5, and limit components 4 on both sides of the lifting assembly 3. The lifting assembly 3 includes four support frames 302 fixedly connected inside the frame 2. Threaded rods 304 are movably connected inside the support frames 302 via bearings. A lifting plate 301 is threadedly connected to the outer surface of the threaded rods 304. A transmission bevel gear 306 is fixedly connected to the outer surface of the threaded rods 304. Two mutually perpendicular driven bevel gears 305 are meshed on the outer surface of the transmission bevel gears 306. A transmission shaft 303 is fixedly connected between the two driven bevel gears 305 on the same side. The transmission shaft 303 is movably connected inside the frame 2. The arc-extinguishing chamber 5 is fixedly installed on the upper surface of the lifting plate 301.

[0030] Specifically, a motor is fixedly connected inside the frame 2. The output end of the motor is fixedly connected to the bottom end of one of the threaded rods 304. The thread directions of two adjacent threaded rods 304 are opposite, and the two adjacent driven bevel gears 305 do not contact each other.

[0031] Furthermore, the motor drives one of the threaded rods 304 to rotate, which in turn drives the transmission bevel gear 306 to rotate. The transmission bevel gear 306, through the driven bevel gear 305 and the rotating shaft, drives the other three threaded rods 304 to rotate, ultimately achieving simultaneous rotation of all four threaded rods 304. This enables the lifting plate 301 to rise or fall. The threads on the outer surfaces of adjacent threaded rods 304 have opposite directions, ensuring that when one threaded rod 304 rotates to raise or lower the lifting plate 301, the other three threaded rods 304 can simultaneously raise or lower the lifting plate 301.

[0032] Example 2

[0033] Reference Figure 1 , Figure 4 and Figure 5 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment. The limiting component 4 includes a connecting plate 401 fixedly connected to the side of the lifting plate 301. A connecting disk 405 is movably connected to the outer surface of the connecting plate 401. A rotating block 406 is fixedly connected to the side of the connecting disk 405 away from the lifting plate 301. A threaded pin 402 is threadedly connected to the inside of the rotating block 406. A plug-in plate 403 is fixedly connected to the end of the threaded pin 402 near the connecting plate 401 through the connecting plate 401.

[0034] Specifically, the support frame 302 has a rectangular groove inside for the lifting of the threaded pin 402. The inner side of the support frame 302 has several slots that mate with the plug plate 403. Two limit pins 404 are fixedly connected to the side of the plug plate 403 near the connecting plate 405. The inner side of the lifting plate 301 has a limit groove for the lifting of the limit pins 404. The limit pins 404 are always kept inside the limit groove.

[0035] Furthermore, the lifting plate 301 drives the arc-extinguishing chamber 5 to rise and fall. After rising to the designated position, the rotating block 406 is rotated to cause the threaded pin 402 to drive the plug plate 403 to retract, thereby allowing the plug plate 403 to be inserted into the slot on the outer surface of the support frame 302, achieving a limiting effect.

[0036] Working principle: When installing the tank-type circuit breaker, after the frame 2 is installed in the designated position, the chassis 1, the arc-extinguishing chamber 5, and the connecting sleeve 6 are installed in the designated position. The arc-extinguishing chamber 5 is installed on the lifting plate 301. Then, the rotating block 406 is rotated, causing the limit pin 404 to move inward, thereby causing the plug plate 403 to disengage from the slot on the inner side of the support frame 302. Then, the motor is started, and the motor drives one of the threaded rods 304 to rotate. The threaded rod 304 drives the transmission bevel gear 306 to rotate. The transmission bevel gear 306, through the driven bevel gear 305 and... The rotating shaft drives the other three threaded rods 304 to rotate, ultimately achieving simultaneous rotation of all four threaded rods 304. This causes the lifting plate 301 to rise and fall, which in turn causes the arc-extinguishing chamber 5 to rise and fall. After reaching the designated position, the rotating block 406 is rotated, causing the threaded pin 402 to retract the plug plate 403. This allows the plug plate 403 to insert into the slot on the outer surface of the support frame 302, achieving a limiting effect. This completes the installation of the tank-type circuit breaker, enabling it to rise and fall, facilitating subsequent maintenance and height adjustment for workers.

[0037] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A liftable tank-type circuit breaker, comprising a frame (2), wherein an arc-extinguishing chamber (5) is disposed inside the frame (2), a connecting sleeve (6) is disposed on the outer surface of the arc-extinguishing chamber (5), and a housing (1) is disposed on the outer surface of the frame (2), characterized in that: A lifting assembly (3) is provided below the arc-extinguishing chamber (5), and limit assemblies (4) are provided on both sides of the lifting assembly (3); The lifting assembly (3) includes four support frames (302) fixedly connected inside the frame (2). The support frames (302) are movably connected to threaded rods (304) through bearings. The outer surface of the threaded rods (304) is threadedly connected to a lifting plate (301). The outer surface of the threaded rods (304) is fixedly connected to a transmission bevel gear (306). The outer surface of the transmission bevel gears (306) is meshed with two mutually perpendicular driven bevel gears (305). A transmission shaft (303) is fixedly connected between the two driven bevel gears (305) on the same side. The transmission shaft (303) is movably connected inside the frame (2). The arc-extinguishing chamber (5) is fixedly installed on the upper surface of the lifting plate (301). The limiting component (4) includes a connecting plate (401) fixedly connected to the side of the lifting plate (301). A connecting disc (405) is movably connected to the outer surface of the connecting plate (401). A rotating block (406) is fixedly connected to the side of the connecting disc (405) away from the lifting plate (301). A threaded pin (402) is threadedly connected to the inside of the rotating block (406). A plug-in plate (403) is fixedly connected to the end of the threaded pin (402) near the connecting plate (401) through the connecting plate (401).

2. The liftable tank-type circuit breaker according to claim 1, characterized in that: A motor is fixedly connected inside the frame (2), and the output end of the motor is fixedly connected to the bottom end of one of the threaded rods (304).

3. A liftable tank-type circuit breaker according to claim 2, characterized in that: The thread directions of two adjacent threaded rods (304) are opposite.

4. A liftable tank-type circuit breaker according to claim 3, characterized in that: The two adjacent driven bevel gears (305) do not contact each other.

5. A liftable tank-type circuit breaker according to claim 4, characterized in that: The support frame (302) has a rectangular groove inside for the lifting of the threaded pin (402), and the inner side of the support frame (302) has several slots that cooperate with the plug-in plate (403).

6. A liftable tank-type circuit breaker according to claim 5, characterized in that: Two limiting pins (404) are fixedly connected to the side of the plug plate (403) near the connecting plate (405). The inner side of the lifting plate (301) is provided with a limiting groove for the lifting of the limiting pins (404). The limiting pins (404) are always kept inside the limiting groove.

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