Vacuum circuit breaker for high-low voltage switch cabinet

Abstract

The utility model relates to the technical field of vacuum circuit breakers, in particular to a vacuum circuit breaker for a high-low voltage switch cabinet, which comprises a mounting plate and a circuit breaker main body, the outer wall of the top end of the mounting plate is fixedly connected with a mounting frame, the outer wall of the top end of the mounting frame is provided with a mounting groove, and the outer walls of the two sides of the mounting frame are provided with mounting holes. Threaded rods are slidably connected to the inner walls of the mounting holes correspondingly, rotary knobs are fixedly connected to the outer walls of one sides of the threaded rods correspondingly, and threaded pipes are connected to the outer walls of the threaded rods through threads correspondingly. The circuit breaker main body is more convenient to disassemble and assemble, the limiting structure directly limits and protects the circuit breaker main body from the two sides and the middle part, the circuit breaker main body is more stable and safer, the limiting frame is driven by the threaded rod, the knob is fixed by the fixing bolt, and the knob cannot move as long as the fixing bolt is not separated from the mounting frame. And the limiting frame and the circuit breaker main body are kept stable, so that the use efficiency of the vacuum circuit breaker is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum circuit breakers, in particular to a vacuum circuit breaker for high and low voltage switch cabinets. Background Art

[0002] The vacuum circuit breaker is named because its arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum. At present, when fixing the trolley type vacuum circuit breaker on the high voltage switch cabinet, the trolley type vacuum circuit breaker is mostly fixed to the mounting plate in the high voltage switch cabinet by bolts. However, during use, the bolts often rotate due to the vibration of the high voltage switch cabinet, which makes it easy for the trolley type vacuum circuit breaker and the mounting plate to loosen.

[0003] After searching the Chinese patent with publication number CN218101083U, a trolley-type vacuum circuit breaker for a high-voltage switch cabinet is disclosed. The fixing bolt cannot rotate through the cooperation of the locking block and the locking groove, and the locking block and the locking groove cannot be automatically separated through the spring. After the fixing bolt is screwed into the threaded hole, the locking block can be inserted into the locking groove to prevent the fixing bolt from rotating, thereby preventing the first mounting plate and the second mounting plate from loosening.

[0004] Based on the above search and combined with the prior art, it is found that the above patent has certain defects. The fixing bolt is fixed by the locking block and the locking groove, so as to limit the first mounting plate. However, the first mounting plate and the circuit breaker body are not stable enough, the circuit breaker body is not protected by limit, and the locking structure is cumbersome to operate. The spring will experience elastic fatigue after long-term use. The locking structure cannot work normally and needs to be replaced, which reduces the use efficiency of the vacuum circuit breaker. Utility Model Content

[0005] The purpose of the utility model is to provide a vacuum circuit breaker for high and low voltage switch cabinets to solve the problems raised in the above background technology.

[0006] The technical scheme of the utility model is: a vacuum circuit breaker for a high and low voltage switch cabinet, comprising a mounting plate and a circuit breaker body, wherein the top outer wall of the mounting plate is fixedly connected with a mounting frame, the top outer wall of the mounting frame is provided with a mounting groove, the outer walls on both sides of the mounting frame are provided with mounting holes, the inner walls of the mounting holes are slidably connected with threaded rods, the outer walls on one side of the threaded rods are fixedly connected with knobs, the outer walls of the threaded rods are threadedly connected with threaded tubes, the outer walls on one side of the threaded tubes are fixedly connected with a limiting frame, and the top outer wall of the limiting frame is fixedly connected There is a protective top plate, and the outer walls on both sides of one side of the bottom of the protective top plate are fixedly connected with push rods, and the outer wall on one side of the push rod is provided with a slope, and the inner walls on both sides of the top of the mounting groove are provided with trapezoidal grooves, and the inner walls of the trapezoidal grooves are slidably connected with limit plates, and the outer wall on one side of the limit plate is provided with a circular groove, and the inner walls of the trapezoidal grooves are fixedly connected with telescopic rods, and one end of the telescopic rod piston rod is fixedly connected to the inner wall of the circular groove, and the top outer walls of the knob and the mounting frame are provided with positioning holes, and the inner walls of the positioning holes are threadedly connected with fixing bolts.

[0007] Preferably, a return spring is sleeved on the outer wall of one end of the telescopic rod piston rod, and the return spring is connected to the telescopic rod and the limit plate.

[0008] Preferably, both inner walls on both sides of the bottom of the installation groove and both inner walls on both sides are fixedly connected with limit blocks, and the spacing between the limit blocks is adapted to the size of the circuit breaker body.

[0009] Preferably, the limit plate is arranged in an isosceles trapezoidal shape, the outer walls on both sides of one side of the limit plate are provided with inclined surface 2, the inclined surface 1 is adapted to the size of inclined surface 2, and the push rod is slidably connected to the outer wall of the limit plate.

[0010] Preferably, the limit frame is arranged in an L shape, the limit frame and the limit plate are both adapted to the size of the circuit breaker body, and the limit frame is slidably connected to the inner wall of the installation groove.

[0011] Preferably, the outer wall of the bottom end of the limiting frame is provided with a rectangular hole, and the rectangular hole is adapted to the size of the limiting block.

[0012] The utility model provides a vacuum circuit breaker for high and low voltage switch cabinets through improvement, which has the following improvements and advantages compared with the prior art:

[0013] First, the utility model is provided with a mounting frame, a circuit breaker body, a limiting frame, a limiting plate, a push rod and a threaded rod, and the middle part of the circuit breaker body is limited and protected from the middle. Finally, the positioning hole on the knob coincides with the positioning hole on the mounting frame, and the fixing bolt is screwed in to fix it. When disassembling, the fixing bolt is loosened and the knob is screwed in the opposite direction. The limiting plate is reset under the action of the telescopic rod and the reset spring, and the disassembly and assembly of the circuit breaker body is more convenient. The limiting structure directly limits the circuit breaker body from both sides and the middle, and the circuit breaker body is more stable and safe. The limiting frame is driven by the threaded rod, and the knob is fixed by the fixing bolt. As long as the fixing bolt does not separate from the mounting frame, the knob cannot move, and the limiting frame and the circuit breaker body remain stable, thereby improving the use efficiency of the vacuum circuit breaker.

[0014] Secondly, the utility model is provided with a mounting frame and a limit block. When the circuit breaker body is placed in the rectangular groove of the mounting frame, it is quickly positioned by four limit blocks to ensure the same distance with the limit plate and the limit frame, thereby improving the installation efficiency of the vacuum circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 It is a schematic cross-sectional view of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the connection structure of the limit frame of the utility model;

[0018] Figure 3 It is a schematic diagram of the threaded rod connection structure of the utility model;

[0019] Figure 4 It is an exploded schematic diagram of the limit plate connection structure of the utility model.

[0020] Description of reference numerals:

[0021] 1. Mounting plate; 2. Mounting frame; 3. Knob; 4. Fixing bolt; 5. Threaded rod; 6. Threaded pipe; 7. Limiting frame; 8. Protective top plate; 9. Circuit breaker body; 10. Push rod; 11. Limiting block; 12. Limiting plate; 13. Inclined surface 1; 14. Inclined surface 2; 15. Telescopic rod; 16. Reset spring. DETAILED DESCRIPTION

[0022] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides a vacuum circuit breaker for high and low voltage switch cabinets through improvement. The technical solution of the utility model is:

[0024] like Figure 1-Figure 4 As shown, a vacuum circuit breaker for a high and low voltage switch cabinet includes a mounting plate 1 and a circuit breaker body 9, the top outer wall of the mounting plate 1 is fixedly connected with a mounting frame 2, the top outer wall of the mounting frame 2 is provided with a mounting groove, the outer walls of both sides of the mounting frame 2 are provided with mounting holes, the inner walls of the mounting holes are slidably connected with threaded rods 5, the outer walls of one side of the threaded rods 5 are fixedly connected with knobs 3, the outer walls of the threaded rods 5 are threadedly connected with threaded pipes 6, the outer walls of one side of the threaded pipes 6 are fixedly connected with a limiting frame 7, and the top outer wall of the limiting frame 7 is fixedly connected with a protective top plate 8 The outer walls of both sides of one side of the bottom of the protective top plate 8 are fixedly connected with push rods 10, and the outer wall of one side of the push rod 10 is provided with an inclined surface 13. The inner walls of both sides of the top of the installation groove are provided with trapezoidal grooves, and the inner walls of the trapezoidal grooves are slidably connected with limit plates 12. The outer wall of one side of the limit plate 12 is provided with a circular groove, and the inner wall of the trapezoidal groove is fixedly connected with a telescopic rod 15, and one end of the piston rod of the telescopic rod 15 is fixedly connected to the inner wall of the circular groove. The outer walls of the top of the knob 3 and the mounting frame 2 are provided with positioning holes, and the inner walls of the positioning holes are threadedly connected with fixing bolts 4.

[0025] Furthermore, a return spring 16 is sleeved on the outer wall of one end of the piston rod of the telescopic rod 15, and the return spring 16 is connected to the telescopic rod 15 and the limit plate 12. The inner walls on both sides of the bottom of the installation groove and the inner walls on both sides are fixedly connected to the limit blocks 11, and the spacing of the limit blocks 11 is adapted to the size of the circuit breaker body 9.

[0026] Furthermore, the limit plate 12 is arranged in an isosceles trapezoid, and the outer walls on both sides of one side of the limit plate 12 are provided with inclined plane 2 14, and the inclined plane 13 is adapted to the size of inclined plane 2 14, and the push rod 10 is slidably connected to the outer wall of the limit plate 12, and the limit frame 7 is arranged in an L shape, and the limit frame 7 and the limit plate 12 are adapted to the size of the circuit breaker body 9, and the limit frame 7 is slidably connected to the inner wall of the installation groove, and the outer wall of the bottom end of the limit frame 7 is provided with a rectangular hole, and the rectangular hole is adapted to the size of the limit block 11, so as to ensure that the limit frame 7 can pass through the limit block 11 normally.

[0027] Working principle: When using, when installing the circuit breaker body 9 of the high and low voltage switch cabinet, directly put the circuit breaker body 9 in the rectangular groove of the mounting frame 2, turn the knobs 3 on both sides of the mounting frame 2, and the threaded rod 5 rotates accordingly, thereby driving the threaded tube 6 and the limit frame 7 to move through the thread, and the L-shaped limit frame 7 limits the circuit breaker body 9 from both sides. When the limit frame 7 approaches, the top protective top plate 8 also approaches. When the protective top plate 8 moves, the push rod 10 at the bottom also moves. The push rod 10 contacts the limit plate 12 of the mounting frame 2, and the inclined surface is 13 contacts with the second inclined surface 14, pushing the limit plates 12 on both sides to move toward the middle, and limiting the middle part of the circuit breaker body from the middle. Finally, the positioning hole on the knob 3 coincides with the positioning hole on the mounting frame 2, and the fixing bolt 4 is screwed in to fix it. When disassembling, loosen the fixing bolt 4 and turn the knob 3 in the opposite direction. The limit plate 12 is reset under the action of the telescopic rod 15 and the reset spring 16. When the circuit breaker body 9 is placed inside the rectangular groove of the mounting frame 2, it is quickly positioned by the four limit blocks 11 to ensure that the distance with the limit plate 12 and the limit frame 7 is the same.

[0028] The technical means disclosed in the utility model are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the utility model belong to the common knowledge of those skilled in the art.

Claims

1. A vacuum circuit breaker for a high and low voltage switch cabinet, comprising a mounting plate (1) and a circuit breaker body (9), characterized in that: The top outer wall of the mounting plate (1) is fixedly connected to a mounting frame (2), the top outer wall of the mounting frame (2) is provided with a mounting groove, the outer walls on both sides of the mounting frame (2) are provided with mounting holes, the inner walls of the mounting holes are slidably connected to threaded rods (5), the outer wall on one side of the threaded rod (5) is fixedly connected to a knob (3), the outer wall of the threaded rod (5) is threadedly connected to a threaded tube (6), the outer wall on one side of the threaded tube (6) is fixedly connected to a limiting frame (7), the top outer wall of the limiting frame (7) is fixedly connected to a protective top plate (8), and the bottom side of the protective top plate (8) is The outer walls on both sides are fixedly connected with push rods (10), and the outer wall on one side of the push rod (10) is provided with an inclined surface (13). The inner walls on both sides of the top of the installation groove are provided with trapezoidal grooves, and the inner walls of the trapezoidal grooves are slidably connected with limit plates (12). The outer wall on one side of the limit plate (12) is provided with a circular groove. The inner wall of the trapezoidal groove is fixedly connected with a telescopic rod (15), and one end of the piston rod of the telescopic rod (15) is fixedly connected to the inner wall of the circular groove. The outer walls of the top of the knob (3) and the mounting frame (2) are provided with positioning holes, and the inner walls of the positioning holes are threadedly connected with fixing bolts (4).

2. A vacuum circuit breaker for high and low voltage switch cabinet according to claim 1, characterized in that: The outer wall of one end of the piston rod of the telescopic rod (15) is sleeved with a return spring (16), and the return spring (16) is connected to the telescopic rod (15) and the limit plate (12).

3. A vacuum circuit breaker for high and low voltage switch cabinet according to claim 1, characterized in that: The inner walls on both sides of the bottom of the installation groove and the inner walls on both sides are fixedly connected to limit blocks (11), and the spacing between the limit blocks (11) is compatible with the size of the circuit breaker body (9).

4. A vacuum circuit breaker for high and low voltage switch cabinet according to claim 1, characterized in that: The limiting plate (12) is arranged in an isosceles trapezoidal shape, and the outer walls on both sides of one side of the limiting plate (12) are provided with inclined plane 2 (14), the inclined plane 1 (13) is adapted to the size of inclined plane 2 (14), and the push rod (10) is slidably connected to the outer wall of the limiting plate (12).

5. A vacuum circuit breaker for high and low voltage switch cabinet according to claim 1, characterized in that: The limiting frame (7) is arranged in an L shape, the limiting frame (7) and the limiting plate (12) are both adapted to the size of the circuit breaker body (9), and the limiting frame (7) is slidably connected to the inner wall of the installation groove.

6. A vacuum circuit breaker for high and low voltage switch cabinet according to claim 1, characterized in that: The outer wall of the bottom end of the limiting frame (7) is provided with a rectangular hole, and the rectangular hole is adapted to the size of the limiting block (11).

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