Primary and secondary fusion pole-mounted circuit breaker and use method thereof

Abstract

The invention discloses a primary and secondary fusion pole-mounted circuit breaker and a use method thereof, and belongs to the technical field of circuit breakers, two handles are extruded to enable a sliding block to drive a clamping rod to be separated from a clamping groove so as to release the locking state between a moving contact and a static contact, a sliding column is supported through a first spring, the sliding column jacks up an isolation switch through a pin shaft, and the isolation switch is fixed through a second spring. When the isolating knife switch is not stressed, the moving contact and the static contact are always in a separated state, the isolating knife switch is prevented from deflecting to be in contact with the static contact due to external force, and when the isolating knife switch and the pillar insulation assembly are connected, the moving contact or the isolating knife switch is pressed down, and the moving contact is in close contact with the static contact, the static contact is in close contact with the pillar insulation assembly. The sliding block is supported through the elastic force of the second spring, so that the sliding block drives the clamping rod to be clamped into the clamping groove, the purpose of locking the static contact and the moving contact is achieved, the situation that the static contact and the moving contact are separated due to external force collision is prevented, and the working stability of the primary and secondary fusion pole-mounted circuit breaker is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and particularly to a primary-secondary integrated pole-mounted circuit breaker and its usage method. Background Art

[0002] A circuit breaker is a high-voltage or high-current switch with an arc extinguishing or arc-proof device. A primary-secondary integrated pole-mounted circuit breaker is a power device that integrates the functions of primary equipment (such as the circuit breaker body) and secondary equipment (such as control, protection, and monitoring equipment), and is mainly used for sectioning, connection, and protection of 10 kV or 12 kV distribution networks. The design concept of this device is to integrate the functions of traditional primary and secondary equipment to improve the response speed, diagnostic accuracy, and intelligent level of the equipment.

[0003] Existing primary-secondary integrated pole-mounted circuit breakers usually use multiple bolt parts to fix them on an external mounting frame, which is inconvenient to operate. Moreover, during the use of the primary-secondary integrated pole-mounted circuit breaker, the multiple bolts fixing it may become loose under the action of external forces, affecting the installation stability.

[0004] And the isolating switch, as a key connecting part for the conversion of the circuit state of the primary-secondary integrated pole-mounted circuit breaker, mainly consists of a moving contact, a static contact, an insulator, an operating mechanism, etc. The isolating switch usually has a structure similar to a knife switch. The moving contact can be separated and combined with the static contact under the drive of the operating mechanism. The insulator is used to support the conductive part of the isolating switch to ensure its insulation from other components. When converting the circuit state, it is necessary to operate the isolating switch to combine the static contact and the moving contact. When combining by means of insertion, it is easy for the static contact and the moving contact to separate due to external force collision, resulting in poor contact. After separating the static contact and the moving contact, there is a distance between them. The moving contact is also prone to deflection or even contact with the static contact due to external force, thus affecting the working stability and usage safety of the primary-secondary integrated pole-mounted circuit breaker. Summary of the Invention

[0005] The purpose of the present invention is to provide a primary-secondary integrated pole-mounted circuit breaker and its usage method to solve the problems proposed in the above background art, that is, during the use of the circuit breaker, the multiple bolts fixing it may become loose under the action of external forces, and when converting the circuit state, it is necessary to operate the isolating switch to combine the static contact and the moving contact. When combining by means of insertion, it is easy for the static contact and the moving contact to separate due to external force collision, resulting in poor contact. After separating the static contact and the moving contact, there is a distance between them. The moving contact is also prone to deflection or even contact with the static contact due to external force.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A primary-secondary integrated pole-mounted circuit breaker and its usage method, comprising a bottom bracket, on the top of the bottom bracket, several circuit breaker bodies are installed. A wiring terminal is arranged outside the circuit breaker body. On one side of the outer wall of the circuit breaker body far from the wiring terminal, a hinge seat is installed. An isolating switch is hingedly installed in the hinge seat. An operating insulation assembly is installed in the middle of the isolating switch. A rotating shaft is sleeved at the bottom end of the operating insulation assembly, and the rotating shaft is installed on the bottom bracket. A moving contact is installed at the bottom end of the isolating switch. The bottom of the moving contact is connected with a post insulation assembly, and the bottom end of the post insulation assembly is installed on one side of the bottom bracket. Slideways are respectively opened on both sides of the bottom of the moving contact. Grooves are opened on the inner wall of the slideway, and a locking assembly is installed in the groove. The bottom end of the locking assembly is clamped on the top of the post insulation assembly. The bottom of the bottom bracket is fixed with a mounting base. A support plate is arranged at the bottom of the mounting base. A mounting assembly is installed through the mounting base. A sliding hole is opened at the bottom of the mounting base corresponding to the position of the mounting assembly. A sliding groove is opened at one end of the mounting assembly. An anti-deviation assembly is connected in the sliding groove. A gear ring is arranged outside the anti-deviation assembly, and the gear ring is fixed on one side of the mounting base.

[0008] As a further scheme of the present invention, the operating insulation assembly includes an operating insulator. A rotating sleeve is arranged at the bottom end of the operating insulator, and the rotating sleeve is connected to the outer wall of the rotating shaft. A sliding groove is opened at the top end of the operating insulator, and a sliding column is slidably connected in the sliding groove. A pin shaft is connected to the top end of the sliding column, and the sliding column is hinged to the middle of the isolating switch through the pin shaft. A first spring is fixedly connected between the bottom end of the sliding column and the inner wall of the sliding groove.

[0009] As a further scheme of the present invention, the post insulation assembly includes a post insulator. A top block is fixed on the top of the post insulator. A static contact is connected to one side of the top block, and the static contact is lapped on the inner wall of the moving contact. A connecting groove is opened on one side of the top block, and clamping grooves are respectively opened on both sides of the inner wall of the connecting groove. The locking assembly is located in the connecting groove and is clamped in the two clamping grooves.

[0010] As a further scheme of the present invention, the locking assembly includes two handles. The handles penetrate and slide in the groove. A slider is fixed at the bottom end of the handle. A clamping rod is fixed at the bottom of the slider, and the clamping rod is slidably connected in the slideway. The clamping rod is clamped in the clamping groove.

[0011] As a further scheme of the present invention, the end of the clamping rod is designed in an L shape, and the part of the clamping rod embedded in the clamping groove is adapted to the shape of the clamping groove. A sliding rod is sleeved in the slider, and the sliding rod is fixed on both sides of the inner wall of the groove. A second spring is sleeved outside the sliding rod, and both ends of the second spring are respectively fixed on one side of the slider and the inner wall of the groove.

[0012] As a further solution of the present invention, the installation component includes a bidirectional lead screw. Bearings are respectively installed on both sides outside the bidirectional lead screw. The two bearings are respectively clamped on both sides of the installation base. Nuts are respectively threadedly connected to both sides outside the bidirectional lead screw. A slide bar is fixed outside the nut. An installation block is fixed at the bottom of the slide bar. The installation block is designed in an L shape and slides through the slide hole.

[0013] As a further solution of the present invention, the anti-deviation component includes an ear plate. A turning handle is fixed on one side of the ear plate. The other side of the ear plate is fixedly connected to a gear. The gear is clamped in a toothed ring. A sliding block is arranged in the middle of the gear and is fixed to the ear plate. The sliding block is slidably connected in a sliding groove. The cross-sectional shape of the sliding block is T-shaped. A third spring is fixedly connected between the sliding block and the inner wall of the sliding groove.

[0014] A usage method of a primary-secondary integrated pole-mounted circuit breaker, the usage method comprising the following steps:

[0015] When installing the primary-secondary integrated pole-mounted circuit breaker, move the installation base to the installation position so that the support plate at the bottom of the installation base contacts the installation base surface. At this time, the four installation blocks are respectively located in the preset L-shaped grooves on the installation base surface. By holding the turning handle and pulling it to one side, the ear plate drives the gear and the sliding block to move. During the process of the sliding block sliding in the sliding groove, the gear can disengage from the toothed ring, that is, the locking state of the bidirectional lead screw is released. Secondly, rotate the turning handle to drive the sliding block to rotate through the ear plate. Because the cross-sectional shape of the sliding block is T-shaped and slides in the sliding groove, the sliding block can drive the bidirectional lead screw to rotate outside the two bearings through the sliding groove;

[0016] During the rotation of the bidirectional lead screw, the two opposite nuts can drive the two slide bars to move away from each other, so that the slide bars drive the installation blocks at the bottom to move and snap into the preset L-shaped grooves on the installation base surface, achieving the purpose of installing the primary-secondary integrated pole-mounted circuit breaker. Moreover, the installation blocks are limited by the slide holes, improving the stability of the horizontal movement of the installation blocks. Secondly, release the turning handle, and drive the sliding block to move inside the sliding groove through the pulling force of the third spring. The sliding block drives the gear to approach the installation base through the ear plate, so that the gear can be snapped into the inner wall of the toothed ring, and the ear plate is locked by means of tooth engagement, so that the bidirectional lead screw will not rotate freely;

[0017] When disconnecting the isolation switch from the on-state with the pillar insulation assembly, by squeezing the two handles, the two sliders are driven to approach each other, enabling the sliders to slide outside the slide bar and compress the second spring. Meanwhile, the sliders can drive the latch rod out of the card slot, thereby releasing the locked state between the moving contact and the static contact. Lift the two handles to drive the moving contact to move away from the static contact and the top block on the pillar insulator. Secondly, operate the first spring inside the insulator to support the sliding column, so that the sliding column jacks up the isolation switch through the pin shaft. And the bottom end of the operating insulator rotates outside the rotating shaft through the rotating sleeve, and the end of the isolation switch rotates inside the hinge seat. Therefore, after releasing the two handles, the isolation switch drives the moving contact to deflect, and in the case where the isolation switch is not stressed, the moving contact and the static contact are always in a separated state, preventing the isolation switch from deflecting and contacting the static contact due to external force;

[0018] When connecting the isolation switch and the pillar insulation assembly, press down the moving contact or the isolation switch, so that the top end of the isolation switch rotates inside the hinge seat. Then the moving contact at the bottom end of the isolation switch approaches the top block on the pillar insulator, and the two latch rods on the moving contact move into the connection slot. Due to the L-shaped design of the end of the latch rod, the two latch rods will approach each other when pressed. When the moving contact is in close contact with the static contact on the top block, support the slider through the elastic force of the second spring, so that the slider drives the latch rod to snap into the card slot, achieving the purpose of locking the static contact and the moving contact, preventing the static contact and the moving contact from separating due to external force collision, and ensuring the connection stability between the static contact and the static contact.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. In the present invention, by squeezing the two handles, the two sliders are driven to approach each other. The sliders can drive the latch rod out of the card slot, thereby releasing the locked state between the moving contact and the static contact. Support the sliding column through the first spring, so that the sliding column jacks up the isolation switch through the pin shaft. Therefore, after releasing the two handles, the isolation switch drives the moving contact to deflect, and in the case where the isolation switch is not stressed, the moving contact and the static contact are always in a separated state, preventing the isolation switch from deflecting and contacting the static contact due to external force, and ensuring the use safety of the one-secondary integrated pole-mounted circuit breaker. When connecting the isolation switch and the pillar insulation assembly, press down the moving contact or the isolation switch, the moving contact at the bottom end of the isolation switch approaches the top block on the pillar insulator, and the two latch rods on the moving contact move into the connection slot. Due to the L-shaped design of the end of the latch rod, the two latch rods will approach each other when pressed. When the moving contact is in close contact with the static contact on the top block, support the slider through the elastic force of the second spring, so that the slider drives the latch rod to snap into the card slot, achieving the purpose of locking the static contact and the moving contact, preventing the static contact and the moving contact from separating due to external force collision, and ensuring the working stability of the one-secondary integrated pole-mounted circuit breaker.

[0021] 2. When installing the primary-secondary integrated pole-mounted circuit breaker of the present invention, move the installation base to the installation position so that the support plate at the bottom of the installation base contacts the installation base surface. At this time, the four installation blocks are respectively located in the preset L-shaped grooves on the installation base surface. By holding the rotating handle and pulling it to one side, the ear plate drives the gear and the sliding block to move. During the process of the sliding block sliding in the sliding groove, the gear can disengage from the toothed ring, that is, the locking state of the bidirectional lead screw is released. Secondly, rotate the rotating handle to drive the sliding block to rotate through the ear plate. Since the cross-sectional shape of the sliding block is designed as a T shape and slides in the sliding groove, during the rotation of the bidirectional lead screw, the two opposite nuts can drive the two sliding bars to move away from each other, so that the sliding bars drive the installation blocks at the bottom to move and snap into the preset L-shaped grooves on the installation base surface, achieving the purpose of installing the primary-secondary integrated pole-mounted circuit breaker. Abandoning the traditional method of fixing it on the external installation base surface with multiple bolt parts improves the installation stability and operation convenience.

[0022] 3. By snapping the installation blocks into the preset L-shaped grooves on the installation base surface, the installation work of the primary-secondary integrated pole-mounted circuit breaker can be completed. After stopping rotating the rotating handle and then loosening the rotating handle, the sliding block is driven to move inside the sliding groove by the pulling force of the third spring. The sliding block drives the gear to approach the installation base through the ear plate, so that the gear can be snapped into the inner wall of the toothed ring, and the ear plate is locked by means of tooth connection, so that the bidirectional lead screw will not rotate freely, and further the nut will not drive the sliding bar to move, achieving the purpose of locking the position of the installation block and preventing the installation block from loosening and affecting the installation stability of the primary-secondary integrated pole-mounted circuit breaker. When removing the primary-secondary integrated pole-mounted circuit breaker, hold the rotating handle and pull it to one side, so that the ear plate drives the gear and the sliding block to move. During the process of the sliding block sliding in the sliding groove, the gear can disengage from the toothed ring, which is convenient for releasing the locking state of the bidirectional lead screw. Secondly, rotate the rotating handle to drive the bidirectional lead screw to rotate, so as to adjust the positions of the nut, the sliding bar and the installation block, thereby improving the operation convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 is a bottom view structural schematic diagram of the present invention;

[0026] Figure 3Schematic diagram of the connection between the bottom bracket and the circuit breaker body of the present invention;

[0027] Figure 4 Schematic diagram of the cross-section of the operating insulation assembly of the present invention;

[0028] Figure 5 Schematic diagram of the connection between the moving contact and the locking assembly of the present invention;

[0029] Figure 6 Schematic diagram of the support insulation assembly of the present invention;

[0030] Figure 7 Schematic diagram of the installation assembly of the present invention;

[0031] Figure 8 Schematic diagram of the partial cross-section of the bidirectional lead screw of the present invention;

[0032] Figure 9 Schematic diagram of the anti-deviation assembly of the present invention;

[0033] Figure 10 For the present invention Figure 4 Enlarged schematic diagram of the structure at position A in the figure.

[0034] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0035] 1. Bottom bracket; 2. Circuit breaker body; 3. Wiring terminal; 4. Isolating switch; 5. Hinge seat; 6. Operating insulation assembly; 601. Operating insulator; 602. Rotating sleeve; 603. Sliding groove; 604. Sliding column; 605. Pin shaft; 606. First spring; 7. Rotating shaft; 8. Moving contact; 9. Support insulation assembly; 901. Support insulator; 902. Top block; 903. Static contact; 904. Connection groove; 905. Card slot; 10. Slideway; 11. Locking assembly; 111. Handle; 112. Slide block; 113. Card rod; 114. Second spring; 115. Slide rod; 12. Groove; 13. Installation base; 14. Support plate; 15. Installation assembly; 151. Bidirectional lead screw; 152. Bearing; 153. Nut; 154. Slide bar; 155. Installation block; 16. Slide hole; 17. Gear ring; 18. Anti-deviation assembly; 181. Ear plate; 182. Rotating handle; 183. Gear; 184. Sliding block; 185. Third spring; 19. Sliding groove. Detailed implementation method

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0037] Please refer to Figures 1-3 , the present invention provides a technical solution:

[0038] A primary-secondary integrated pole-mounted circuit breaker includes a bottom bracket 1. A plurality of circuit breaker bodies 2 are installed on the top of the bottom bracket 1. A wiring terminal 3 is provided outside the circuit breaker body 2. A hinge seat 5 is installed on one side of the outer wall of the circuit breaker body 2 away from the wiring terminal 3. An isolating switch 4 is hingedly installed in the hinge seat 5. An operating insulation assembly 6 is installed in the middle of the isolating switch 4. A rotating shaft 7 is sleeved at the bottom end of the operating insulation assembly 6, and the rotating shaft 7 is installed on the bottom bracket 1; a moving contact 8 is installed at the bottom end of the isolating switch 4, and a support insulation assembly 9 is connected to the bottom of the moving contact 8. The bottom end of the support insulation assembly 9 is installed on one side of the bottom bracket 1.

[0039] As Figure 4 shown, as a further solution of the present invention, the operating insulation assembly 6 includes an operating insulator 601. A rotating sleeve 602 is provided at the bottom end of the operating insulator 601, and the rotating sleeve 602 is connected to the outer wall of the rotating shaft 7. A sliding groove 603 is opened at the top end of the operating insulator 601. A sliding column 604 is slidably connected in the sliding groove 603. A pin shaft 605 is connected to the top end of the sliding column 604. The sliding column 604 is hinged to the middle of the isolating switch 4 through the pin shaft 605. A first spring 606 is fixedly connected between the bottom end of the sliding column 604 and the inner wall of the sliding groove 603.

[0040] The sliding column 604 is supported by the first spring 606 inside the operating insulator 601, so that the sliding column 604 jacks up the isolating switch 4 through the pin shaft 605. And the bottom end of the operating insulator 601 rotates outside the rotating shaft 7 through the rotating sleeve 602, and the end of the isolating switch 4 rotates inside the hinge seat 5.

[0041] As Figure 6 shown, as a further solution of the present invention, the support insulation assembly 9 includes a support insulator 901. A top block 902 is fixed on the top of the support insulator 901. A static contact 903 is connected to one side of the top block 902. The static contact 903 is lapped on the inner wall of the moving contact 8, so that the moving contact 8 and the static contact 903 are always in a separated state when the isolating switch 4 is not stressed; a connection groove 904 is opened on one side of the top block 902. Card slots 905 are respectively opened on both sides of the inner wall of the connection groove 904. A locking assembly 11 is located in the connection groove 904 and is clamped in the two card slots 905.

[0042] As shown Figure 5 and 10 As shown, slideways 10 are respectively formed on both sides of the bottom of the moving contact 8. Grooves 12 are formed on the inner walls of the slideways 10. A locking component 11 is installed in the grooves 12. The bottom end of the locking component 11 is clamped on the top of the support insulating component 9. The locking component 11 includes two handles 111. The handles 111 penetrate and slide in the grooves 12. A slider 112 is fixed to the bottom end of the handle 111. A clamping rod 113 is fixed to the bottom of the slider 112. The clamping rod 113 is slidably connected in the slideway 10. The clamping rod 113 is clamped in the clamping groove 905;

[0043] The moving contact 8 at the bottom end of the isolating switch 4 is close to the top block 902. The two clamping rods 113 on the moving contact 8 then move into the connecting groove 904. After being pressed, the two clamping rods 113 will approach each other, enabling the clamping rods 113 to slide into the connecting groove 904, eliminating the need for manual adjustment of the position of the clamping rods 113 for operation.

[0044] The end of the clamping rod 113 is designed in an L shape, and the part of the clamping rod 113 embedded in the clamping groove 905 is adapted to the shape of the clamping groove 905. A sliding rod 115 is sleeved in the slider 112. The clamping rod 113 can move in the slideway 10. The slideway 10 limits the clamping rod 113, and the sliding rod 115 supports the slider 112, thereby improving the stability of the horizontal movement of the clamping rod 113. The sliding rod 115 is fixed to both sides of the inner wall of the groove 12. A second spring 114 is sleeved outside the sliding rod 115. The two ends of the second spring 114 are respectively fixed to one side of the slider 112 and the inner wall of the groove 12.

[0045] When the moving contact 8 is in close contact with the static contact 903 on the top block 902, the slider 112 is supported by the elastic force of the second spring 114, enabling the slider 112 to drive the clamping rod 113 to be clamped into the clamping groove 905, achieving the purpose of locking the static contact 903 and the moving contact 8 and preventing the static contact 903 and the moving contact 8 from separating due to external collision.

[0046] As a further solution of the present invention, an installation base 13 is fixed to the bottom of the bottom bracket 1. A support plate 14 is provided at the bottom of the installation base 13. An installation component 15 is installed through the installation base 13. A sliding hole 16 is formed at the bottom of the installation base 13 corresponding to the position of the installation component 15. A sliding groove 19 is formed at one end of the installation component 15. An anti-deviation component 18 is connected in the sliding groove 19. A gear ring 17 is provided outside the anti-deviation component 18. The gear ring 17 is fixed to one side of the installation base 13.

[0047] As shown Figures 7-8As shown, the installation component 15 includes a bidirectional lead screw 151. On both sides outside the bidirectional lead screw 151, bearings 152 are installed respectively. The two bearings 152 are respectively clamped on both sides of the installation base 13. On both sides outside the bidirectional lead screw 151, nuts 153 are respectively threadedly connected. A slide bar 154 is fixed outside the nut 153, and an installation block 155 is fixed at the bottom of the slide bar 154. The installation block 155 is designed in an L shape and slides through the slide hole 16.

[0048] Rotating the turning handle 182 drives the sliding block 184 to rotate through the ear plate 181. Since the cross-sectional shape of the sliding block 184 is designed in a T shape and slides in the sliding groove 19, during the rotation of the bidirectional lead screw 151, the two opposite nuts 153 can drive the two slide bars 154 to move away from each other, so that the slide bars 154 drive the installation blocks 155 at the bottom to move and snap into the preset L-shaped grooves on the installation base surface, improving the stability of the installation of the breaker on the primary-secondary fusion column.

[0049] As Figure 9 As shown, the anti-deviation component 18 includes an ear plate 181. On one side of the ear plate 181, a turning handle 182 is fixed. On the other side of the ear plate 181, a gear 183 is fixedly connected. The gear 183 is clamped in the toothed ring 17. A sliding block 184 is provided in the middle of the gear 183, and the sliding block 184 is fixed to the ear plate 181. The sliding block 184 is slidably connected in the sliding groove 19, and the cross-sectional shape of the sliding block 184 is T-shaped. A third spring 185 is fixedly connected between the sliding block 184 and the inner wall of the sliding groove 19.

[0050] Driven by the pulling force of the third spring 185, the sliding block 184 moves inside the sliding groove 19. The sliding block 184 drives the gear 183 to approach the installation base 13 through the ear plate 181, so that the gear 183 can be clamped into the inner wall of the toothed ring 17, and the ear plate 181 is locked by means of tooth engagement, so that the bidirectional lead screw 151 will not rotate freely, preventing the installation block 155 from loosening and affecting the stability of the installation of the breaker on the primary-secondary fusion column.

[0051] A usage method of a primary-secondary fusion column-mounted breaker, the usage method includes the following steps:

[0052] When installing the primary and secondary fusion column mounted circuit breaker, the mounting base 13 is moved to the mounting position so that the support plate 14 at the bottom of the mounting base 13 contacts the mounting base surface. At this time, the four mounting blocks 155 are respectively located in the L-shaped groove bodies preset on the mounting base surface. By holding the turning handle 182 and pulling it to one side, the ear plate 181 drives the gear 183 and the sliding block 184 to move. During the sliding process of the sliding block 184 in the sliding groove 19, the gear 183 can be separated from the gear ring 17, that is, the locking state of the bidirectional screw rod 151 is released. Then, the turning handle 182 is rotated to drive the sliding block 184 to rotate through the ear plate 181. Because the cross-sectional shape of the sliding block 184 is T-shaped and slides in the sliding groove 19, the sliding block 184 can drive the bidirectional screw rod 151 to rotate outside the two bearings 152 through the sliding groove 19.

[0053] During the rotation of the bidirectional screw rod 151, the two opposite nuts 153 can drive the two slide bars 154 to move away from each other, so that the slide bar 154 drives the bottom mounting block 155 to move and snap into the L-shaped groove body preset on the mounting base surface, so as to achieve the purpose of installing the circuit breaker on the primary and secondary fusion column, and the mounting block 155 is limited by the sliding hole 16 to improve the stability of the horizontal movement of the mounting block 155. Next, the handle 182 is loosened, and the sliding block 184 is driven to move inside the sliding groove 19 by the pulling force of the third spring 185. The sliding block 184 drives the gear 183 to approach the mounting base 13 through the ear plate 181, so that the gear 183 can snap into the inner wall of the gear ring 17, and the ear plate 181 is locked by gear connection, so that the bidirectional screw rod 151 will not rotate freely.

[0054] When disconnecting the isolating switch 4 and the supporting insulator assembly 9, the two sliders 112 are driven to approach each other by squeezing the two handles 111, so that the slider 112 can slide outside the slide rod 115 and squeeze the second spring 114, and the slider 112 can drive the clamping rod 113 to disengage from the clamping groove 905, thereby releasing the locking state between the moving contact 8 and the static contact 903, and lifting the two handles 111 to drive the moving contact 8 to move and disengage from the static contact 903 and the top block 902 on the supporting insulator 901, and then by operating the insulator 60 The first spring 606 inside the 1 supports the slide post 604, so that the slide post 604 lifts the isolating knife switch 4 through the pin shaft 605, and the bottom end of the operating insulator 601 rotates outside the rotating shaft 7 through the rotating sleeve 602, and the end of the isolating knife switch 4 rotates inside the hinge seat 5. Therefore, after the two handles 111 are released, the isolating knife switch 4 drives the moving contact 8 to deflect, and when the isolating knife switch 4 is not subjected to force, the moving contact 8 and the static contact 903 are always in a separated state, so as to prevent the isolating knife switch 4 from being deflected and contacting the static contact 903 due to the external force;

[0055] When closing the disconnecting switch 4 and the post insulator assembly 9, press down the moving contact 8 or the disconnecting switch 4 to cause the top end of the disconnecting switch 4 to rotate inside the hinge seat 5. Then, the moving contact 8 at the bottom end of the disconnecting switch 4 approaches the top block 902 on the post insulator 901, and the two latch rods 113 on the moving contact 8 move into the connecting groove 904. Due to the L-shaped design of the ends of the latch rods 113, the two latch rods 113 will approach each other when pressed. When the moving contact 8 is in close contact with the static contact 903 on the top block 902, the slider 112 is supported by the elastic force of the second spring 114, causing the slider 112 to drive the latch rods 113 to snap into the card slot 905, achieving the purpose of locking the static contact 903 and the moving contact 8, preventing the separation of the static contact 903 and the moving contact 8 caused by external force collision, and ensuring the connection stability between the static contact 903 and the moving contact 8.

Claims

1. A primary-secondary fusion column mounted circuit breaker, comprising a bottom bracket (1), characterized in that: A plurality of circuit breaker bodies (2) are mounted on the top of the bottom bracket (1), the circuit breaker body (2) is provided with a wiring terminal (3) on the outside, a hinge seat (5) is mounted on the side of the outer wall of the circuit breaker body (2) away from the wiring terminal (3), an isolating knife switch (4) is hingedly mounted in the hinge seat (5), an operating insulating component (6) is mounted in the middle of the isolating knife switch (4), a rotating shaft (7) is sleeved at the bottom end of the operating insulating component (6), the rotating shaft (7) is mounted on the bottom bracket (1), a moving contact (8) is mounted at the bottom end of the isolating knife switch (4), a support insulating component (9) is connected to the bottom of the moving contact (8), the bottom end of the support insulating component (9) is mounted on one side of the bottom bracket (1), and slideways ( 10), the inner wall of the slideway (10) is provided with a groove (12), a locking component (11) is installed in the groove (12), the bottom end of the locking component (11) is clamped on the top of the pillar insulation component (9), the bottom of the bottom bracket (1) is fixed with a mounting base (13), the bottom of the mounting base (13) is provided with a support plate (14), a mounting component (15) is installed through the mounting base (13), a sliding hole (16) is provided at the bottom of the mounting base (13) corresponding to the position of the mounting component (15), one end of the mounting component (15) is provided with a sliding groove (19), an anti-deflection component (18) is connected in the sliding groove (19), a gear ring (17) is provided on the outside of the anti-deflection component (18), and the gear ring (17) is fixed to one side of the mounting base (13).

2. A primary and secondary fusion column mounted circuit breaker according to claim 1, characterized in that: The operating insulating assembly (6) comprises an operating insulator (601), a rotating sleeve (602) is provided at the bottom end of the operating insulator (601), the rotating sleeve (602) is connected to the outer wall of the rotating shaft (7), a sliding groove (603) is provided at the top end of the operating insulator (601), a sliding column (604) is slidably connected in the sliding groove (603), a pin shaft (605) is connected to the top end of the sliding column (604), the sliding column (604) is hinged to the middle part of the isolating knife switch (4) through the pin shaft (605), and a first spring (606) is fixedly connected between the bottom end of the sliding column (604) and the inner wall of the sliding groove (603).

3. The primary and secondary fusion column mounted circuit breaker according to claim 1, characterized in that: The support insulating assembly (9) comprises a support insulator (901), a top block (902) is fixed on the top of the support insulator (901), a static contact (903) is connected to one side of the top block (902), the static contact (903) overlaps the inner wall of the moving contact (8), a connecting groove (904) is provided on one side of the top block (902), and clamping grooves (905) are respectively provided on both sides of the inner wall of the connecting groove (904), and the locking assembly (11) is located in the connecting groove (904) and clamped in the two clamping grooves (905).

4. The primary and secondary fusion column mounted circuit breaker according to claim 3, characterized in that: The locking assembly (11) comprises two handles (111), the handles (111) penetrate and slide in the groove (12), a slider (112) is fixed at the bottom end of the handle (111), a clamping rod (113) is fixed at the bottom of the slider (112), the clamping rod (113) is slidably connected in the slideway (10), and the clamping rod (113) is clamped in the clamping groove (905).

5. The primary and secondary fusion column mounted circuit breaker according to claim 4, characterized in that: The end of the clamping rod (113) is L-shaped, and the portion of the clamping rod (113) embedded in the clamping groove (905) is adapted to the shape of the clamping groove (905). The sliding block (112) is sleeved with a sliding rod (115), and the sliding rod (115) is fixed on both sides of the inner wall of the groove (12). The sliding rod (115) is sleeved with a second spring (114), and the two ends of the second spring (114) are respectively fixed on one side of the sliding block (112) and the inner wall of the groove (12).

6. The primary and secondary fusion column mounted circuit breaker according to claim 1, characterized in that: The mounting assembly (15) comprises a bidirectional screw rod (151), bearings (152) are respectively installed on both sides of the bidirectional screw rod (151), and the two bearings (152) are respectively clamped on both sides of the mounting base (13), and nuts (153) are respectively threadedly connected on both sides of the bidirectional screw rod (151), and a sliding bar (154) is fixed outside the nut (153), and a mounting block (155) is fixed at the bottom of the sliding bar (154), and the mounting block (155) is L-shaped and passes through and slides in the sliding hole (16).

7. The primary and secondary fusion column mounted circuit breaker according to claim 1, characterized in that: The anti-deflection component (18) comprises an ear plate (181), a rotating handle (182) is fixed on one side of the ear plate (181), a gear (183) is fixedly connected on the other side of the ear plate (181), the gear (183) is clamped in the gear ring (17), a sliding block (184) is provided in the middle of the gear (183), and the sliding block (184) is fixed to the ear plate (181), the sliding block (184) is slidably connected in the sliding groove (19), and the cross-sectional shape of the sliding block (184) is T-shaped, and a third spring (185) is fixedly connected between the sliding block (184) and the inner wall of the sliding groove (19).

8. A method for using a primary-secondary fusion column mounted circuit breaker, according to any one of claims 1 to 7, characterized in that: The method of use comprises the following steps: When installing the primary and secondary fusion column mounted circuit breaker, the mounting base (13) is moved to the mounting position so that the support plate (14) at the bottom of the mounting base (13) contacts the mounting base surface. At this time, the four mounting blocks (155) are respectively located in L-shaped grooves preset on the mounting base surface. By holding the rotating handle (182) and pulling it to one side, the ear plate (181) drives the gear (183) and the sliding block (184) to move. The sliding block (184) is in the sliding groove (1 9), during the sliding process, the gear (183) can be disengaged from the gear ring (17), that is, the locking state of the bidirectional screw rod (151) is released, and then the handle (182) is rotated to drive the sliding block (184) to rotate through the ear plate (181). Since the cross-sectional shape of the sliding block (184) is T-shaped and slides in the sliding groove (19), the sliding block (184) can drive the bidirectional screw rod (151) to rotate outside the two bearings (152) through the sliding groove (19); During the rotation of the bidirectional screw rod (151), the two nuts (153) facing each other can drive the two slide bars (154) to move away from each other, so that the slide bar (154) drives the mounting block (155) at the bottom to move and snap into the L-shaped groove body preset on the mounting base surface, thereby achieving the purpose of installing the circuit breaker on the primary and secondary fusion column, and the mounting block (155) is limited by the sliding hole (16) to improve the stability of the horizontal movement of the mounting block (155). Next, the handle (182) is released, and the sliding block (184) is driven to move inside the sliding groove (19) by the pulling force of the third spring (185). The sliding block (184) drives the gear (183) to approach the mounting base (13) through the ear plate (181), so that the gear (183) can snap into the inner wall of the gear ring (17), and the ear plate (181) is locked by a tooth connection, so that the bidirectional screw rod (151) does not rotate freely. When disconnecting the isolating knife switch (4) and the supporting insulator assembly (9), the two sliders (112) are driven to approach each other by squeezing the two handles (111), so that the sliders (112) can slide outside the slide bar (115) and squeeze the second spring (114), and at the same time, the sliders (112) can drive the clamping rod (113) to disengage from the clamping groove (905), thereby releasing the locking state between the moving contact (8) and the stationary contact (903), and the two handles (111) are lifted to drive the moving contact (8) to move and disengage from the stationary contact (903) and the top block (902) on the supporting insulator (901), and then the insulator (601) is operated. ) The first spring (606) inside supports the slide column (604), so that the slide column (604) lifts the isolating knife switch (4) through the pin shaft (605), and the bottom end of the operating insulator (601) rotates outside the rotating shaft (7) through the rotating sleeve (602), and the end of the isolating knife switch (4) rotates inside the hinge seat (5). Therefore, after the two handles (111) are released, the isolating knife switch (4) drives the moving contact (8) to deflect, and when the isolating knife switch (4) is not subjected to force, the moving contact (8) and the static contact (903) are always in a separated state, thereby preventing the isolating knife switch (4) from deflecting and contacting the static contact (903) due to external force; When the isolating knife switch (4) and the supporting insulator assembly (9) are connected, the moving contact (8) or the isolating knife switch (4) is pressed down, so that the top end of the isolating knife switch (4) rotates inside the hinge seat (5), and the moving contact (8) at the bottom end of the isolating knife switch (4) approaches the top block (902) on the supporting insulator (901), and the two clamping rods (113) on the moving contact (8) move into the connecting groove (904). Since the ends of the clamping rods (113) are designed in an L shape, the two clamping rods (113) will approach each other after being pressed. When the moving contact (8) is in close contact with the stationary contact (903) on the top block (902), the slider (112) is supported by the elastic force of the second spring (114), so that the slider (112) drives the clamping rod (113) to be clamped into the clamping groove (905), thereby achieving the purpose of locking the stationary contact (903) and the moving contact (8), preventing the stationary contact (903) and the moving contact (8) from being separated due to external force collision, and ensuring the connection stability between the stationary contact (903) and the stationary contact (903).

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