CN212570828U

CN212570828U - Circuit breaker major loop structure convenient to dismouting

Info

Publication number: CN212570828U
Application number: CN202021337168.9U
Authority: CN
Inventors: 李晨
Original assignee: Shanghai Veikai Electric Co ltd
Current assignee: Shanghai Veikai Electric Co ltd
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2021-02-19
Anticipated expiration: 2030-07-09

Abstract

The utility model discloses a circuit breaker major loop structure convenient to dismouting, including the insulating cylinder, go up the seat of being qualified for the next round of competitions, vacuum interrupter, go out the seat of being qualified for the next round of competitions down, flexible connector, insulating pull rod, still include and touch the arm, touch the arm down, touch the arm and touch down at last and arranged connecting bolt one, the one end that vacuum interrupter was kept away from to the hexagon socket head is separately with last touch the arm and touch the terminal surface parallel and level of arm down, go out the seat and set up a shoulder hole down, be fixed with a guide bar on connecting bolt two's the terminal surface, connecting bolt two passes through-hole three in proper order and shoulder hole and takes the screwed part fixed with the shoulder hole. The utility model discloses a to be located hollow last contact arm and touch down the inside connecting bolt of arm and prolong to the open end of the two, convenient to last contact arm and touch down the dismantlement and the installation of arm, seted up the shoulder hole on the seat of being qualified for the next round of competitions down, should set up and to make two first advance line location of connecting bolt, then screw, should set up the screw thread part on the seat of being qualified for the next round of competitions down of being convenient for constructor alignment, improved work efficiency.

Description

Circuit breaker major loop structure convenient to dismouting

Technical Field

The utility model relates to a power equipment field, more specifically say so and relate to a circuit breaker major loop structure convenient to dismouting.

Background

The vacuum circuit breaker is named because arc extinguishing media and insulating media of contact gaps after arc extinguishing are high vacuum; the arc extinguishing device has the advantages of small volume, light weight, suitability for frequent operation and no need of maintenance for arc extinguishing, and is relatively popularized in power distribution networks. The vacuum circuit breaker is an indoor power distribution device in a 3-10 kV and 50Hz three-phase alternating-current system, can be used for protecting and controlling electrical equipment in industrial and mining enterprises, power plants and transformer substations, is particularly suitable for use places requiring no oil, less maintenance and frequent operation, and can be arranged in a middle cabinet, a double-layer cabinet and a fixed cabinet to be used for controlling and protecting high-voltage electrical equipment.

The existing vacuum circuit breaker has a compact structure of a main loop, but the main loop is difficult for maintenance personnel to disassemble, assemble and maintain, and is difficult to fasten and disassemble due to the compact structure and the extrusion of a plurality of connecting parts in a narrow space, so that the construction difficulty of the maintenance personnel is increased, and the working efficiency is reduced. For example, the main circuit structure of vacuum circuit breaker, which is named as 201620632044.0, has the fastening bolt which is deeper into the insulating cylinder when the upper and lower contact arms, the lower wire outlet base and the soft connecting piece are installed, so that the maintenance personnel is very inconvenient to disassemble and install the main circuit structure.

Therefore, how to provide a main circuit structure of a circuit breaker which is convenient to disassemble and assemble, so that the main circuit structure of the circuit breaker can overcome the problems. Is a problem that needs to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a circuit breaker major loop structure convenient to dismouting.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a circuit breaker main loop structure convenient to disassemble and assemble comprises an insulating cylinder, an upper wire outlet seat, a vacuum arc extinguish chamber, a lower wire outlet seat, a flexible connecting piece and an insulating pull rod, wherein the vacuum arc extinguish chamber is positioned in the insulating cylinder, the movable end of the vacuum arc extinguish chamber is connected with one end of the insulating pull rod, one end of the flexible connecting piece is fixed with the movable end of the vacuum arc extinguish chamber and the joint of the insulating pull rod, the other end of the flexible connecting piece is fixed with the lower wire outlet seat, the static end of the vacuum arc extinguish chamber is connected with the upper wire outlet seat,

the upper contact arm is hollow, the other end of the upper contact arm is provided with a first through hole, the other end of the upper contact arm is provided with a second through hole, the other end of the upper contact arm is provided with a first threaded hole, the end of the upper wire outlet seat, which is far away from the vacuum arc-extinguishing chamber, is provided with a second threaded hole, the end of the lower wire outlet seat, which is far away from the flexible connecting piece, is provided with a first connecting bolt, the inner ends of the first connecting bolts are provided with threads and are screwed with the corresponding first threaded hole or the corresponding second threaded hole after respectively penetrating through the corresponding first through hole and the corresponding second through hole, the other ends of the first connecting bolts are provided with hexagon socket head connectors, one ends of the hexagon socket head connectors, which are far away from the vacuum arc-extinguishing chamber, are respectively flush with the end surfaces of the upper contact arm and the lower contact arm, and support rings are respectively fixed on bolt rods, which are close to the,

the flexible connecting piece is kept away from the one end of moving the end has seted up through-hole three the seat of being qualified for the next round of competitions down with a shoulder hole is seted up to flexible connecting piece's fixed position department, the big aperture section inner wall of shoulder hole is provided with the internal thread, is fixed with a guide bar on the terminal surface that connecting bolt two kept away from the bolt head, the diameter of guide bar with the aperture section adaptation of shoulder hole, connecting bolt two pass in proper order through-hole three with the shoulder hole and with the big aperture section threaded connection of shoulder hole.

According to the technical scheme, compared with the prior art, the utility model discloses a circuit breaker main loop structure convenient to disassemble and assemble is provided, the utility model discloses a through will be located hollow upper contact arm and lower contact arm inside be used for fixing above-mentioned two connecting bolt one extend to the open end of the two, convenient when overhauing to the dismantlement and the installation of upper contact arm and lower contact arm, and, owing to extend connecting bolt one, constructor can clearly see the interior hexagonal joint on the connecting bolt one, prevent under the condition that can't see interior hexagonal joint, interior hexagonal spanner easily damages interior hexagonal joint; in addition, a shoulder hole has been seted up on the seat of being qualified for the next round of competitions down, a corresponding matching has the connecting bolt two of guide bar, constructor is being connected the flexible connectors and is being qualified for the next round of competitions the seat fixedly down, because the construction space is narrow and small, connecting bolt two is in the inside of insulating cylinder again, be difficult for aiming at connecting bolt two and screw, this setting can make connecting bolt two advance fix a position, then screw, this setting is difficult to twist connecting bolt two dislocation, the seat of being qualified for the next round of competitions under the preventing damage, in addition, the constructor of being convenient for aims at the screw thread part on the seat of being qualified for the.

Preferably, the outer diameter of the support ring is smaller than or equal to the diameter of the upper contact arm and the lower contact arm. This setting can guarantee that connecting bolt one can be stable fix in touching the arm last, avoids because connecting bolt one length overlength, the connection that leads to is unstable or because connecting bolt shakes once to lead to going out the problem that the seat connection is not hard up from top to bottom.

Preferably, the inner wall of the small aperture section of the stepped hole is smooth and is chamfered at one end close to the large aperture section. This setting can guarantee that the guide bar can insert smoothly in the little hole of diameter of shoulder hole, reduces the operation degree of difficulty.

Preferably, the length of the internal thread on the inner wall of the large-aperture section of the stepped hole is greater than that of the two thread parts of the connecting bolt. This setting can guarantee that connecting bolt two can effectual fastening in the shoulder hole.

Preferably, the length of the guide rod is greater than that of the large-aperture section of the stepped hole. This setting can guarantee when the guide bar just inserted in the part that the diameter is little in the shoulder hole, the part that the diameter is big can not contact with the screw thread part of connecting bolt two, guarantees that the guide bar plays the effect of direction and location.

Preferably, spring washers are arranged inside the upper contact arm and the lower contact arm and between the first through hole and the support ring and between the second through hole and the support ring. This setting can guarantee that connecting bolt is when connecting and touch the arm under with, avoids the not hard up of connecting bolt that leads to because vibration or other reasons.

Preferably, the first connecting bolt and the second connecting bolt are both made of high-quality carbon structural steel. This setting can guarantee that connecting bolt one and connecting bolt two have higher intensity, prevents to be turned round bad.

Preferably, neodymium iron boron magnets are bonded inside the bolt heads of the second connecting bolts. This setting can guarantee that connecting bolt two is difficult for coming off from outer hexagonal spanner.

Can know via foretell technical scheme, compare with prior art, the utility model discloses a circuit breaker major loop structure convenient to dismouting is provided. The following technical effects can be achieved:

the utility model discloses a will lie in the hollow upper contact arm and touch the arm inside and be used for fixing the above-mentioned two connecting bolt one of the two and extend to the open end of the two, conveniently touch the arm and touch the dismantlement and the installation of arm down when overhauing, and, because prolong connecting bolt one, constructor can see the socket head cap on connecting bolt one clearly, prevent under the condition that can't see socket head cap; in addition, a shoulder hole has been seted up on the seat of being qualified for the next round of competitions down, a corresponding matching has the connecting bolt two of guide bar, constructor is being connected the flexible connectors and is being qualified for the next round of competitions the seat fixedly down, because the construction space is narrow and small, connecting bolt two is in the inside of insulating cylinder again, be difficult for aiming at connecting bolt two and screw, this setting can make connecting bolt two advance fix a position, then screw, this setting is difficult to twist connecting bolt two dislocation, the seat of being qualified for the next round of competitions under the preventing damage, in addition, the constructor of being convenient for aims at the screw thread part on the seat of being qualified for the.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is an overall sectional view of a main circuit structure of a circuit breaker facilitating disassembly and assembly;

fig. 2 is a partially enlarged view of a main circuit structure of a circuit breaker for easy assembly and disassembly;

fig. 3 is a partial enlarged view of a main circuit structure of a circuit breaker at a position B, which is convenient to disassemble and assemble;

FIG. 4 is a first connecting bolt structure of a main circuit structure of the circuit breaker, which is convenient to disassemble and assemble;

fig. 5 is a structural diagram of a second connecting bolt of the main circuit structure of the circuit breaker, which is convenient to disassemble and assemble.

In the figure:

01 is an insulating cylinder, 02 is an upper wire outlet seat, 020 is a first threaded hole, 03 is a vacuum arc-extinguishing chamber, 030 is a moving end, 031 is a static end, 04 is a lower wire outlet seat, 040 is a second threaded hole, 041 is a stepped hole, 05 is a soft connecting piece, 050 is a third through hole, 06 is an insulating pull rod, 07 is an upper contact arm, 070 is a first through hole, 08 is a lower contact arm, 080 is a second through hole, 09 is a first connecting bolt, 090 is a thread, 091 is an inner hexagonal connector, 092 is a support ring, 10 is a second connecting bolt, 100 is a guide rod, 11 is a spring gasket, and 12 is a neodymium-iron-boron magnet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model discloses a circuit breaker major loop structure convenient to dismouting, the utility model discloses a through will be located hollow upper contact arm and lower contact arm inside be used for fixing the above-mentioned two connecting bolt one extend to the open end of the two, convenient when overhauing to the dismantlement and the installation of upper contact arm and lower contact arm, and, owing to extend connecting bolt one, constructor can clearly see the interior hexagonal joint on the connecting bolt one, prevent under the condition that can not see interior hexagonal joint, interior hexagonal spanner easily damages interior hexagonal joint; in addition, a shoulder hole has been seted up on the seat of being qualified for the next round of competitions down, a corresponding matching has the connecting bolt two of guide bar, constructor is being connected the flexible connectors and is being qualified for the next round of competitions the seat fixedly down, because the construction space is narrow and small, connecting bolt two is in the inside of insulating cylinder again, be difficult for aiming at connecting bolt two and screw, this setting can make connecting bolt two advance fix a position, then screw, this setting is difficult to twist connecting bolt two dislocation, the seat of being qualified for the next round of competitions under the preventing damage, in addition, the constructor of being convenient for aims at the screw thread part on the seat of being qualified for the.

Examples

Referring to the accompanying drawings 1-5, which are schematic diagrams of the whole and partial structures of an embodiment of the present invention, the present invention provides a main circuit structure of a circuit breaker convenient for disassembly and assembly, comprising an insulating cylinder 01, an upper wire outlet seat 02, a vacuum arc-extinguishing chamber 03, a lower wire outlet seat 04, a flexible connecting member 05, and an insulating pull rod 06, wherein the vacuum arc-extinguishing chamber 03 is fixed in the insulating cylinder 01 through bolts, a movable end 030 of the vacuum arc-extinguishing chamber 03 is connected with one end of the insulating pull rod 06, one end of the flexible connecting member 05 is fixed with the joint of the movable end 030 of the vacuum arc-extinguishing chamber and the insulating pull rod 06, the other end of the flexible connecting member 05 is fixed with the lower wire outlet seat 04, a stationary end 031 of the vacuum arc-extinguishing chamber 03 is connected with the upper wire outlet seat 02 through bolts, the main circuit structure further comprises an upper contact arm 07 and a lower contact arm 08, the upper contact arm 07 is hollow, the other end of which, one end of the upper wire outlet seat 02 far away from the vacuum arc-extinguishing chamber 03 is provided with a first threaded hole 020, one end of the lower wire outlet seat 04 far away from the soft connecting piece 05 is provided with a second threaded hole 040, the insides of the upper contact arm 07 and the lower contact arm 08 are respectively provided with a first connecting bolt 09, one ends of the two first connecting bolts 09 are provided with threads 090 and are screwed with the first threaded hole 020 and the second threaded hole 040 after respectively penetrating through a first through hole 070 and a second through hole 080, the other ends of the two first connecting bolts are provided with inner hexagonal joints 091, one ends of the inner hexagonal joints 091 far away from the vacuum arc-extinguishing chamber 03 are respectively flush with the end faces of the upper contact arm 07 and the lower contact arm 08, bolt rods which are positioned between the threads 090 and the inner hexagonal joints 091 and are close to the threads 090,

the end, far away from the moving end 030, of the soft connecting piece 05 is provided with a through hole III 050, a stepped hole 041 is formed in the position, where the lower wire outlet seat 04 is fixed to the soft connecting piece 05, the inner wall of the large-hole-diameter section of the stepped hole 041 is provided with internal threads, a guide rod 100 is fixed to the end face, far away from the bolt head, of the connecting bolt II 10, the diameter of the guide rod 100 is matched with the small-hole-diameter section of the stepped hole 041, and the connecting bolt II 10 sequentially penetrates through the through hole III 050 and the stepped hole 041 and is in threaded connection with the large-hole-diameter section of.

The support ring 092 is provided in two, and the outer diameter of the support ring 092 is equal to or smaller than the diameters of the upper contact arm 07 and the lower contact arm 08. The inner wall of the small-aperture section of the stepped hole 041 is smooth and is chamfered near one end of the large-aperture section. The length of the internal thread of the large-aperture section of the stepped hole 041 is greater than that of the threaded part of the second connecting bolt 10. The length of the guide rod 100 is greater than the length of the large-bore section of the stepped bore 041. Spring washers 11 are arranged inside the upper contact arm 07 and the lower contact arm 08 and between the first through hole 070 and the support ring 092 and between the second through hole 080 and the support ring 092. The first connecting bolt 09 and the second connecting bolt 10 are both made of high-quality carbon structural steel. The inside of the bolt head of the second connecting bolt 10 is adhered with a circular neodymium iron boron magnet 12.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a circuit breaker major loop structure convenient to dismouting, includes insulating cylinder (01), goes out line seat (02), vacuum interrupter (03), goes out line seat (04), flexible connector (05), insulating pull rod (06) down, vacuum interrupter (03) are located in insulating cylinder (01), the end (030) that moves of vacuum interrupter (03) with the one end of insulating pull rod (06) is connected, the one end of flexible connector (05) with the end (030) that moves of vacuum interrupter (03) with the junction of insulating pull rod (06) is fixed, the other end of flexible connector (05) with it is fixed to go out line seat (04) down, the quiet end (031) of vacuum interrupter (03) with go out line seat (02) and connect its characterized in that:

the vacuum wire drawing device is characterized by further comprising an upper contact arm (07) and a lower contact arm (08), wherein the upper contact arm (07) is hollow, one end of the upper contact arm (07) is provided with a first through hole (070), the other end of the lower contact arm (08) is provided with a second through hole (080), one end of the upper wire outlet seat (02) far away from the vacuum arc-extinguishing chamber (03) is provided with a first threaded hole (020), one end of the lower wire outlet seat (04) far away from the soft connecting piece (05) is provided with a second threaded hole (040), the upper contact arm (07) and the lower contact arm (08) are respectively internally provided with a first connecting bolt (09), one ends of the first connecting bolts (09) are provided with threads (090), penetrate through the corresponding first through hole (070) and the second through hole (080) and then are in threaded connection with the corresponding first threaded hole (020) or the second threaded hole (040), the other end of the connecting bolt I (09) is provided with an inner hexagonal joint (091), one end of the inner hexagonal joint (091) far away from the vacuum arc-extinguishing chamber (03) is flush with the end surfaces of the upper contact arm (07) and the lower contact arm (08), support rings (092) are fixed on the bolt rod of the connecting bolt I (09) close to the thread (090) and the inner hexagonal joint respectively,

the flexible connector is characterized in that a through hole III (050) is formed in one end, far away from the movable end (030), of the flexible connector (05), a stepped hole (041) is formed in a fixed position of the lower wire outlet seat (04) and the flexible connector (05), internal threads are formed in the inner wall of a large-bore section of the stepped hole (041), a guide rod (100) is fixed to the end face, far away from the bolt head, of the connecting bolt II (10), the diameter of the guide rod (100) is matched with the small-bore section of the stepped hole (041), and the connecting bolt II (10) sequentially penetrates through the through hole III (050) and the stepped hole (041) and is in threaded connection with the large-bore section of the stepped hole (041).

2. The circuit breaker main circuit structure convenient to disassemble and assemble of claim 1, wherein: the outer diameter of the support ring (092) is smaller than or equal to the diameter of the upper contact arm (07) and the lower contact arm (08).

3. The circuit breaker main circuit structure convenient to disassemble and assemble of claim 1, wherein: the inner wall of the small-aperture section of the stepped hole (041) is smooth and is chamfered near one end of the large-aperture section.

4. The circuit breaker main circuit structure convenient to disassemble and assemble of claim 1, wherein: the length of the internal thread on the inner wall of the large-aperture section of the stepped hole (041) is greater than that of the threaded part of the connecting bolt II (10).

5. The circuit breaker main circuit structure convenient to disassemble and assemble of claim 1, wherein: the length of the guide rod (100) is larger than that of the large-aperture section of the stepped hole (041).

6. The circuit breaker main circuit structure convenient to disassemble and assemble of claim 1, wherein: spring washers (11) are arranged inside the upper contact arm (07) and the lower contact arm (08) and between the first through hole (070) and the support ring (092) and between the second through hole (080) and the support ring (092).

7. The circuit breaker main circuit structure convenient to disassemble and assemble of claim 1, wherein: the connecting bolt I (09) and the connecting bolt II (10) are both made of high-quality carbon structural steel.

8. The circuit breaker main circuit structure convenient to disassemble and assemble of claim 1, wherein: a neodymium iron boron magnet (12) is bonded inside the bolt head of the second connecting bolt (10).