Arc extinguishing mechanism of air circuit breaker

Abstract

According to the technical scheme, the arc extinguishing mechanism of the air circuit breaker is characterized in that the arc extinguishing mechanism comprises a shell, and a mounting hole is formed in the outer portion of the shell; the grid baffle plate is movably arranged in the mounting hole in a sleeving manner; the placing block is fixedly connected to one side of the grid baffle plate, and an insulating frame is movably arranged in the placing block in a sleeving manner; the adjusting part is arranged in the placing block; through the arrangement of the cleaning piece, after the arc extinguishing grid pieces are used for a long time and the shell is detached from the interior of the distribution box, the position of the adjusting frame is adjusted by using the adjusting part, so that the adjusting frame can move up and down outside the arc extinguishing grid pieces; at the moment, the plurality of cleaning pieces can clean the surfaces of the left side and the right side of the arc extinguishing grid piece respectively, so that dirt deposited on the surfaces of the arc extinguishing grid piece is removed, and the dirt on the surfaces of the arc extinguishing grid piece is prevented from affecting the arc extinguishing effect.

Description

Technical Field

[0001] The invention relates to the technical field of arc extinguishing, and in particular to an arc extinguishing mechanism of an air circuit breaker. Background Art

[0002] Air switch, also known as air circuit breaker, is a type of circuit breaker. It is a switch that automatically disconnects as long as the current in the circuit exceeds the rated current. Air switch is a very important electrical appliance in low-voltage power distribution network and electric traction system, which integrates control and multiple protection functions. In addition to completing contact and disconnection of circuits, it can also protect circuits or electrical equipment from short circuits, severe overloads and undervoltages, and can also be used to start motors infrequently.

[0003] For example, the Chinese patent with publication number CN220138239U discloses a graded arc-extinguishing air switch, which includes a shell, a shell cover installed at the front end of the shell, an inlet installed between the shell and the left end of the shell cover, an outlet installed between the shell and the right end of the shell cover, an actuating mechanism installed between the shell and the upper end of the shell cover, and a tripping part installed on the inner side of the shell and the shell cover and facing the actuating mechanism. In the utility model, the original arc extinguishing chamber is scientifically and rationally improved, a staggered arc extinguishing grid structure is adopted, and a side guard plate made of alumina ceramic material is arranged on the left side of the arc extinguishing chamber, and an S-shaped arc extinguishing plate is arranged on the right side of the arc extinguishing chamber. The arc generated in the opening and closing process of the air switch can be graded to extinguish the arc, which effectively accelerates the extinction of the arc. At the same time, the shell and the shell cover can be laterally protected against breakdown, thereby comprehensively improving the arc extinguishing efficiency and the safety of use of the air switch. However, in the actual application of this scheme, the arc extinguishing effect of the arc extinguishing grid is easily affected by dust, dirt, etc. attached to the surface of the arc extinguishing grid when the arc extinguishing grid is used for a long time. In order to solve the above problems, we have proposed an arc extinguishing mechanism for an air circuit breaker. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an arc extinguishing mechanism for an air circuit breaker, which solves the problems mentioned in the background technology.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] An arc extinguishing mechanism for an air circuit breaker, comprising:

[0007] A housing, wherein a mounting hole is provided on the exterior of the housing;

[0008] A baffle plate, the baffle plate being movably sleeved inside the mounting hole;

[0009] A placement block, the placement block is fixedly connected to one side of the baffle plate, and an insulating frame is provided in an inner movable sleeve of the placement block;

[0010] A plurality of arc-extinguishing grids, wherein the plurality of arc-extinguishing grids are fixedly connected to the interior of the insulating frame, an adjusting frame is movably sleeved inside the insulating frame, and the adjusting frame and the plurality of arc-extinguishing grids are movably sleeved together;

[0011] Two rotating grooves, both of which are opened on one side of the placement block, an adjusting rod is provided in an inner movable sleeve of the rotating groove, and one end of the adjusting rod is fixedly connected to a first bevel gear;

[0012] A plurality of cleaning sheets, wherein the plurality of cleaning sheets are fixedly connected to the inside of the adjusting frame;

[0013] An adjusting component disposed inside the placement block, used for adjusting the position of the adjusting frame;

[0014] The fixing component arranged inside the placing block is used to fix the insulating frame.

[0015] Preferably, the adjusting component comprises:

[0016] Two adjustment grooves, both of which are opened on the left and right sides of the placement block, the internal movable sleeve of the adjustment groove is provided with an adjustment block, the top surface of the adjustment block is provided with a threaded hole, the internal thread of the threaded hole is connected to a rotating rod, the top surface of the adjustment block is provided with two installation grooves, the inside of the installation groove is fixedly connected with a magnet, the left and right sides of the insulating frame are fixedly connected with a connecting block, and the magnet is magnetically attracted to the connecting block.

[0017] Preferably, the fixing component comprises:

[0018] Two placement slots, both of which are opened on the left and right sides of the placement block, the placement slots are internally movably sleeved with a positioning rod, the left and right sides of the insulating frame are opened with positioning slots, the positioning rod and the positioning slot are movably sleeved together, the inner circular wall of the placement slot is opened with a storage slot, the outer circular wall of the positioning rod is fixedly connected with an adjusting ring, one side of the storage slot is fixedly connected with a spring, one end of the spring is fixedly connected to one end of the adjusting ring, one end of the positioning rod is fixedly connected with a connecting rope, one side of the placement slot is opened with a connecting hole, the connecting rope is movably sleeved together with the connecting hole, the movement of the first bevel gear is opened with a connecting slot, and a connecting ring is rotatably installed inside the connecting slot, and one end of the connecting rope is fixedly connected to one end of the connecting ring.

[0019] Preferably, through holes are provided on both left and right sides of the insulating frame, and the connecting block is movably sleeved with the through holes.

[0020] Preferably, a rotating hole is provided on the bottom surface of the adjusting groove, the rotating rod is rotatably mounted together with the rotating hole, a second bevel gear is provided on the bottom surface of the rotating rod, and the first bevel gear is meshed with the second bevel gear.

[0021] Preferably, two adjustment holes are provided on one side of the baffle plate, and the adjustment holes are movably mounted together with the adjustment rod, and a control groove is provided on the inner circular wall of the adjustment hole, and a gear is provided inside the control groove, and a fixing ring is fixedly connected to one side of the gear, and a fixing groove is provided on one side of the control groove, and the fixing ring is rotatably mounted together with the fixing groove.

[0022] Preferably, a clamping hole is opened on one side of the gear, and a clamping block is movably sleeved inside the adjusting hole, and the clamping block is movably sleeved together with the clamping hole.

[0023] Preferably, a connecting rod is fixedly connected to one side of the clamping block, one end of the connecting rod is fixedly connected to one end of the adjusting rod, and one end of the clamping block is fixedly connected to a pulling rod.

[0024] Preferably, a sliding hole is provided on one side of the control groove, a sliding block is movably sleeved inside the sliding hole, the sliding block is meshed with the gear, and sliding grooves are provided on both the left and right sides inside the mounting hole, the sliding block and the sliding groove are movably sleeved together.

[0025] Preferably, a sealing gasket is fixedly connected to one side of the baffle plate, a plurality of support rods are fixedly connected to one side of the interior of the shell, a plurality of support grooves are opened on one side of the placement block, and the support rods are movably sleeved with the support grooves.

[0026] In summary, the present invention mainly has the following beneficial effects:

[0027] By setting up the shell, when the staff fixes the electrical components inside the air circuit breaker inside the shell, and then fixes the baffle plate inside the mounting hole, several arc extinguishing grids can divide the arc inside the shell into multiple short arcs, and use the near-cathode effect of the AC arc to extinguish the arc. By setting up cleaning sheets, when the arc extinguishing grids are used for a long time, after the shell is removed from the inside of the distribution box, the position of the adjustment frame is adjusted by using the adjustment component, so that the adjustment frame can move up and down outside several arc extinguishing grids. At this time, several cleaning sheets can clean the left and right surfaces of the arc extinguishing grids respectively, so as to remove the dirt deposited on the surface of the arc extinguishing grids, thereby avoiding the dirt on the surface of the arc extinguishing grids affecting the arc extinguishing effect. By using the fixing component to fix the insulating frame inside the placement block, it is convenient to disassemble and assemble the insulating frame, so that after cracks, scratches and other damages appear on the outer surface of the arc extinguishing grid, the arc extinguishing grid can be directly replaced, so as to improve the arc extinguishing effect of the arc extinguishing grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0029] Figure 2 It is a schematic diagram of the baffle structure of the present invention;

[0030] Figure 3 It is a schematic diagram of the insulating frame structure of the present invention;

[0031] Figure 4 It is a schematic diagram of the placement block structure of the present invention.

[0032] Figure 5 yes Figure 4 Schematic diagram of the locally enlarged structure of A in the middle.

[0033] Figure 6 It is a schematic diagram of the structure of the adjustment block of the present invention.

[0034] Figure 7 It is a schematic diagram of the positioning rod structure of the present invention.

[0035] Figure 8 It is a schematic diagram of the sliding block structure of the present invention.

[0036] Fig. 9 It is a schematic diagram of the card block structure of the present invention.

[0037] Fig.10 It is a schematic diagram of the shell structure of the present invention.

[0038] Reference numerals: 1, housing; 2, mounting hole; 3, baffle plate; 4, placement block; 5, insulation frame; 6, arc-extinguishing grid; 7, adjustment frame; 8, rotation slot; 9, adjustment rod; 10, cleaning sheet; 11, first bevel gear; 12, adjustment slot; 13, adjustment block; 14, threaded hole; 15, rotation rod; 16, mounting slot; 17, magnet; 18, connection block; 19, placement slot; 20, positioning rod; 21, positioning slot; 22, storage slot; 23, adjustment ring; 24. Spring; 25. Connecting rope; 26. Connecting hole; 27. Through hole; 28. Rotating hole; 29. ​​Second bevel gear; 30. Adjusting hole; 31. Control groove; 32. Gear; 33. Fixed ring; 34. Fixed groove; 35. Clamping hole; 36. Clamping block; 37. Connecting rod; 38. Pulling rod; 39. Sliding hole; 40. Sliding block; 41. Sliding groove; 42. Sealing pad; 43. Support rod; 44. Support groove; 45. Connecting groove; 46. Connecting ring. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] refer to Figure 1 -and Fig.10 , an arc extinguishing mechanism of an air circuit breaker, comprising:

[0041] A housing 1, wherein a mounting hole 2 is formed on the outside of the housing 1;

[0042] The baffle plate 3 is movably sleeved inside the mounting hole 2;

[0043] A placement block 4, which is fixedly connected to one side of the baffle plate 3, is made of insulating material, and an insulating frame 5 is provided inside the placement block 4;

[0044] A plurality of arc extinguishing grids 6, wherein the plurality of arc extinguishing grids 6 are fixedly connected to the inside of the insulating frame 5, and an adjusting frame 7 is movably sleeved inside the insulating frame 5, and the adjusting frame 7 is made of insulating material, and the adjusting frame 7 and the plurality of arc extinguishing grids 6 are movably sleeved together;

[0045] Two rotating grooves 8, both of which are opened on one side of the placement block 4, the internal movable sleeve of the rotating groove 8 is provided with an adjusting rod 9, one end of the adjusting rod 9 is fixedly connected to the first bevel gear 11;

[0046] A plurality of cleaning sheets 10, wherein the plurality of cleaning sheets 10 are fixedly connected to the inside of the adjusting frame 7, and a plurality of plastic wires are fixedly connected to the left and right sides of the cleaning sheets 10, so that when the adjusting frame 7 is located at the bottom surface of the placing block 4, the cleaning sheets 10 can be prevented from contacting with the arc extinguishing grid 6;

[0047] An adjusting component disposed inside the placement block 4, used to adjust the position of the adjusting frame 7;

[0048] A fixing component disposed inside the placement block 4, used to fix the insulating frame 5;

[0049] By setting the housing 1, when the staff fixes the electrical components inside the air circuit breaker inside the housing 1, and then fixes the baffle plate 3 inside the mounting hole 2, the arc inside the housing 1 can be divided into multiple short arcs by the plurality of arc extinguishing grids 6, and the arc is extinguished by using the near cathode effect of the AC arc. By setting the cleaning sheet 10, after the arc extinguishing grid 6 is used for a long time, after the housing 1 is removed from the inside of the distribution box, the position of the adjusting frame 7 can be adjusted by using the adjusting component, so that the adjusting frame 7 can be adjusted between the plurality of arc extinguishing grids. 6 moves up and down outside, and at this time, several cleaning sheets 10 can clean the surfaces of the left and right sides of the arc extinguishing grid 6 respectively, so as to remove the dirt deposited on the surface of the arc extinguishing grid 6, so as to avoid the dirt on the surface of the arc extinguishing grid 6 affecting the arc extinguishing effect. The insulating frame 5 is fixed to the inside of the placement block 4 by using a fixing component to facilitate the disassembly and assembly of the insulating frame 5, so that after the outer surface of the arc extinguishing grid 6 is damaged by cracks, scratches, etc., the arc extinguishing grid 6 can be directly replaced, so as to improve the arc extinguishing effect of the arc extinguishing grid 6.

[0050] As a further solution of the present invention, the adjusting component includes:

[0051] Two adjustment grooves 12, both of which are provided on the left and right sides of the placement block 4, an adjustment block 13 is provided in a movable sleeve inside the adjustment groove 12, a threaded hole 14 is provided on the top surface of the adjustment block 13, a rotating rod 15 is connected to the internal thread of the threaded hole 14, a thread is provided on the outer wall of the rotating rod 15, two mounting grooves 16 are provided on the top surface of the adjustment block 13, a magnet 17 is fixedly connected to the inside of the mounting groove 16, and a connecting block 18 is fixedly connected to the left and right sides of the insulating frame 5, and the magnet 17 and the connecting block 18 are magnetically attracted together;

[0052] By setting the rotating rod 15, when the rotating rod 15 rotates, the adjusting block 13 can move up and down inside the adjusting slot 12. At this time, the adjusting block 13 can drive the insulating frame 5 to move through the connecting block 18, so that the insulating frame 5 can move up and down outside the plurality of arc extinguishing grids 6.

[0053] As a further solution of the present invention, the fixing component comprises:

[0054] Two placement grooves 19, both placement grooves 19 are opened on the left and right sides of the placement block 4, the placement groove 19 is movably sleeved with a positioning rod 20, and the left and right sides of the insulating frame 5 are opened with positioning grooves 21, the positioning rod 20 and the positioning groove 21 are movably sleeved together, the inner circular wall surface of the placement groove 19 is opened with a storage groove 22, the outer circular wall surface of the positioning rod 20 is fixedly connected with an adjusting ring 23, one side of the storage groove 22 is fixedly connected with a spring 24, one end of the spring 24 is fixedly connected with one end of the adjusting ring 23, one end of the positioning rod 20 is fixedly connected with a connecting rope 25, one side of the placement groove 19 is opened with a connecting hole 26, the connecting rope 25 is movably sleeved with the connecting hole 26, the movement of the first bevel gear 11 is opened with a connecting groove 45, the inner rotatable installation of a connecting ring 46, one end of the connecting rope 25 is fixedly connected with one end of the connecting ring 46;

[0055] By setting the insulating frame 5, when the staff places the insulating frame 5 inside the placement block 4, the positioning rod 20 can be movably sleeved with the positioning groove 21, so that the insulating frame 5 can be fixed inside the placement block 4. At the same time, when the adjusting rod 9 moves inside the rotating groove 8, the adjusting rod 9 can pull one end of the connecting rope 25 to move through the first bevel gear 11, so that the connecting rope 25 can drive the positioning rod 20 to move during movement, thereby facilitating the later adjustment of the position of the positioning rod 20 inside the placement groove 19. At the same time, when the positioning rod 20 is moving, the positioning rod 20 can drive one end of the spring 24 to move through the adjusting ring 23, so that the spring 24 is compressed to generate a force. When the adjusting rod 9 returns to its original position, the force generated by the spring 24 can drive the positioning rod 20 to move, so that the positioning rod 20 can return to its original position. By setting the connecting ring 46, since the connecting ring 46 is installed inside the connecting groove 45 for rotation, the connecting rope 25 is prevented from being entangled around the outside of the adjusting rod 9 when the adjusting rod 9 rotates.

[0056] As a further solution of the present invention, through holes 27 are provided on both the left and right sides of the insulating frame 5, and the connecting block 18 is movably sleeved with the through holes 27;

[0057] By providing the connection block 18 , since the connection block 18 and the through hole 27 are movably sleeved together, the adjustment frame 7 can move inside the insulation frame 5 .

[0058] As a further solution of the present invention, a rotating hole 28 is provided on the bottom surface of the adjusting groove 12, and the rotating rod 15 is rotatably mounted together with the rotating hole 28. A second bevel gear 29 is provided on the bottom surface of the rotating rod 15, and the first bevel gear 11 is meshed with the second bevel gear 29.

[0059] By setting the second bevel gear 29, when the staff adjusts the position of the adjusting rod 9 inside the rotating groove 8, the second bevel gear 29 can be meshed with the first bevel gear 11. When the adjusting rod 9 rotates, the first bevel gear 11 can be driven to rotate through the second bevel gear 29, so that the first bevel gear 11 can drive the rotating rod 15 to rotate. At this time, the adjusting block 13 can move up and down outside the rotating rod 15.

[0060] As a further solution of the present invention, two adjustment holes 30 are provided on one side of the baffle plate 3, and the adjustment holes 30 are movably sleeved together with the adjustment rod 9, and a control groove 31 is provided on the inner wall surface of the adjustment hole 30, and a gear 32 is provided inside the control groove 31, and a fixing ring 33 is fixedly connected to one side of the gear 32, and a fixing groove 34 is provided on one side of the control groove 31, and the fixing ring 33 and the fixing groove 34 are rotatably installed together;

[0061] By providing the gear 32 , since the fixing ring 33 and the fixing groove 34 are rotatably mounted together, the gear 32 can be fixed inside the control groove 31 , and the gear 32 can rotate inside the fixing ring 33 .

[0062] As a further solution of the present invention, a clamping hole 35 is opened on one side of the gear 32, and a clamping block 36 is movably sleeved inside the adjustment hole 30, and the clamping block 36 is movably sleeved together with the clamping hole 35;

[0063] By providing the clamping block 36 , when the clamping block 36 and the clamping hole 35 are movably sleeved together, the clamping block 36 can drive the gear 32 to rotate when rotating.

[0064] As a further solution of the present invention, a connecting rod 37 is fixedly connected to one side of the block 36, one end of the connecting rod 37 is fixedly connected to one end of the adjusting rod 9, and one end of the block 36 is fixedly connected to a pulling rod 38, and both the connecting rod 37 and the pulling rod 38 are movably installed inside the adjusting hole 30;

[0065] By setting the block 36, when the staff pulls the block 36 to move by pulling the rod 38, the block 36 can be movably mounted together with the hole 35. At this time, when the staff rotates the pulling rod 38, the block 36 can drive the gear 32 to rotate. At the same time, since one end of the connecting rod 37 is fixedly connected to one end of the adjusting rod 9, when the pulling rod 38 rotates, the adjusting rod 9 can be driven to rotate through the connecting rod 37. At the same time, when the staff moves the pulling rod 38 inside the adjusting hole 30, the pulling rod 38 can drive the adjusting rod 9 to move through the connecting rod 37, so that the adjusting rod 9 can be moved to the inside of the adjusting hole 30.

[0066] As a further solution of the present invention, a sliding hole 39 is provided on one side of the control groove 31, a sliding block 40 is movably sleeved inside the sliding hole 39, a tooth groove is provided on the bottom surface of the sliding block 40, the sliding block 40 is meshed with the gear 32, and sliding grooves 41 are provided on both the left and right sides of the inside of the mounting hole 2, and the sliding block 40 and the sliding groove 41 are movably sleeved together;

[0067] By setting the gear 32, when the gear 32 rotates, the sliding block 40 is meshed with the gear 32, so that the rotating gear 32 can drive the sliding block 40 to move. When the sliding block 40 and the sliding groove 41 are movably mounted together, the baffle plate 3 can be fixed inside the mounting hole 2, so as to facilitate the disassembly of the baffle plate 3 at a later time.

[0068] As a further solution of the present invention, a sealing gasket 42 is fixedly connected to one side of the baffle plate 3, a plurality of support rods 43 are fixedly connected to one side of the inner part of the shell 1, a plurality of support grooves 44 are opened on one side of the placement block 4, and the support rods 43 and the support grooves 44 are movably sleeved together;

[0069] By providing the sealing gasket 42 , the sealing gasket 42 can seal between the baffle plate 3 and the housing 1 .

[0070] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An arc extinguishing mechanism for an air circuit breaker, characterized in that: include: A housing (1), wherein a mounting hole (2) is provided on the outside of the housing (1); A baffle plate (3), the baffle plate (3) being movably sleeved inside the mounting hole (2); A placement block (4), the placement block (4) being fixedly connected to one side of the baffle plate (3), and an insulating frame (5) being movably sleeved inside the placement block (4); A plurality of arc-extinguishing grids (6), wherein the plurality of arc-extinguishing grids (6) are fixedly connected to the interior of the insulating frame (5), an adjusting frame (7) is movably sleeved inside the insulating frame (5), and the adjusting frame (7) and the plurality of arc-extinguishing grids (6) are movably sleeved together; Two rotating grooves (8), both of which are opened on one side of the placement block (4), an adjusting rod (9) is movably sleeved inside the rotating groove (8), and one end of the adjusting rod (9) is fixedly connected to a first bevel gear (11); A plurality of cleaning sheets (10), wherein the plurality of cleaning sheets (10) are fixedly connected to the inside of the adjustment frame (7); An adjusting component disposed inside the placement block (4) and used for adjusting the position of the adjusting frame (7); A fixing component arranged inside the placement block (4) is used to fix the insulation frame (5).

2. The arc extinguishing mechanism of an air circuit breaker according to claim 1, characterized in that: The adjusting component comprises: Two adjustment grooves (12), the two adjustment grooves (12) are both arranged on the left and right sides of the placement block (4), an adjustment block (13) is movably sleeved inside the adjustment groove (12), a threaded hole (14) is arranged on the top surface of the adjustment block (13), a rotating rod (15) is connected to the internal thread of the threaded hole (14), two installation grooves (16) are arranged on the top surface of the adjustment block (13), a magnet (17) is fixedly connected inside the installation groove (16), and a connection block (18) is fixedly connected to the left and right sides of the insulation frame (5), and the magnet (17) and the connection block (18) are magnetically attracted together.

3. The arc extinguishing mechanism of an air circuit breaker according to claim 1, characterized in that: The fixing member comprises: Two placement grooves (19), the two placement grooves (19) are both opened on the left and right sides of the placement block (4), a positioning rod (20) is movably sleeved inside the placement groove (19), the left and right sides of the insulation frame (5) are both opened with positioning grooves (21), the positioning rod (20) and the positioning groove (21) are movably sleeved together, the inner circular wall surface of the placement groove (19) is opened with a storage groove (22), the outer circular wall surface of the positioning rod (20) is fixedly connected with an adjustment ring (23), and one side of the storage groove (22) is fixedly connected with a spring (24), One end of the spring (24) is fixedly connected to one end of the adjusting ring (23); one end of the positioning rod (20) is fixedly connected to a connecting rope (25); a connecting hole (26) is provided on one side of the placement groove (19); the connecting rope (25) is movably sleeved with the connecting hole (26); a connecting groove (45) is provided for movement of the first bevel gear (11); a connecting ring (46) is rotatably installed inside the connecting groove (45); one end of the connecting rope (25) is fixedly connected to one end of the connecting ring (46).

4. The arc extinguishing mechanism of an air circuit breaker according to claim 2, characterized in that: Through holes (27) are provided on both left and right sides of the insulating frame (5), and the connecting block (18) is movably sleeved with the through holes (27).

5. The arc extinguishing mechanism of an air circuit breaker according to claim 2, characterized in that: A rotating hole (28) is provided on the bottom surface of the adjusting groove (12), the rotating rod (15) is rotatably mounted together with the rotating hole (28), a second bevel gear (29) is provided on the bottom surface of the rotating rod (15), and the first bevel gear (11) is meshed with the second bevel gear (29).

6. The arc extinguishing mechanism of an air circuit breaker according to claim 1, characterized in that: Two adjustment holes (30) are provided on one side of the baffle plate (3), the adjustment holes (30) and the adjustment rod (9) are movably sleeved together, a control groove (31) is provided on the inner circular wall surface of the adjustment hole (30), a gear (32) is provided inside the control groove (31), a fixing ring (33) is fixedly connected to one side of the gear (32), a fixing groove (34) is provided on one side of the control groove (31), and the fixing ring (33) and the fixing groove (34) are rotatably mounted together.

7. The arc extinguishing mechanism of an air circuit breaker according to claim 6, characterized in that: A clamping hole (35) is provided on one side of the gear (32), and a clamping block (36) is movably sleeved inside the adjusting hole (30), and the clamping block (36) and the clamping hole (35) are movably sleeved together.

8. The arc extinguishing mechanism of an air circuit breaker according to claim 7, characterized in that: A connecting rod (37) is fixedly connected to one side of the clamping block (36), one end of the connecting rod (37) is fixedly connected to one end of the adjusting rod (9), and one end of the clamping block (36) is fixedly connected to a pulling rod (38).

9. The arc extinguishing mechanism of an air circuit breaker according to claim 8, characterized in that: A sliding hole (39) is provided on one side of the control groove (31), a sliding block (40) is movably sleeved inside the sliding hole (39), and the sliding block (40) is meshed with the gear (32). Sliding grooves (41) are provided on both left and right sides inside the mounting hole (2), and the sliding block (40) and the sliding groove (41) are movably sleeved together.

10. The arc extinguishing mechanism of an air circuit breaker according to claim 1, characterized in that: A sealing gasket (42) is fixedly connected to one side of the baffle plate (3), a plurality of support rods (43) are fixedly connected to one side of the interior of the shell (1), a plurality of support grooves (44) are provided on one side of the placement block (4), and the support rods (43) and the support grooves (44) are movably sleeved together.

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