CN211828621U

CN211828621U - Opening mechanism for vacuum circuit breaker, vacuum circuit breaker and switch cabinet

Info

Publication number: CN211828621U
Application number: CN202020737585.6U
Authority: CN
Inventors: 赵俊生; 柯志新
Original assignee: Siemens Switchgear Ltd
Current assignee: Siemens Switchgear Ltd
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2020-10-30
Anticipated expiration: 2030-05-07

Abstract

The utility model relates to a separating brake mechanism, vacuum circuit breaker and cubical switchboard for vacuum circuit breaker's separating brake mechanism, separating brake mechanism include a separating brake device, and separating brake device includes a backup pad, a rotating member and an interlocking structure, and the rotating member is rotatably connected and is driven interlocking structure motion in backup pad and accessible rotation, and interlocking structure connects and can drive the end and remove so that vacuum circuit breaker separating brake in a vacuum circuit breaker's movable end, and separating brake mechanism still includes: a rotating assembly rotatably connected to the supporting plate; one end of the pull rod is connected with the rotating assembly; under the drive of the pull rod, the rotating assembly can rotate and drive the rotating piece to rotate, so that the vacuum circuit breaker is switched off through the interlocking structure.

Description

Opening mechanism for vacuum circuit breaker, vacuum circuit breaker and switch cabinet

Technical Field

The utility model relates to the field of machinary, especially a separating brake mechanism for vacuum circuit breaker. Furthermore, the utility model discloses still relate to the vacuum circuit breaker and the cubical switchboard that adopt this kind of separating brake mechanism.

Background

In an electric power system, a switch cabinet is used to open or close an electric circuit, and convenience of operation thereof is crucial to safety and stability of the electric power system. Breaking or closing the circuit is achieved by means of circuit breakers installed in the switchgear cabinet.

In some emergency situations, the circuit breaker needs to be manually opened without opening the cabinet door, so that dangerous situations can be avoided. Therefore, how to realize the manual opening of the breaker under the condition of not opening the cabinet door is called as a problem which needs to be solved urgently.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an opening mechanism for vacuum circuit breaker, opening mechanism includes an opening device, opening device includes a backup pad, a rotating member and an interlocking structure, the rotating member rotatably connect in the backup pad and accessible rotate and drive the interlocking structure motion, the interlocking structure is connected in a vacuum circuit breaker's movable end and can drive the movable end and remove so that vacuum circuit breaker opens the floodgate, opening mechanism still includes:

a rotating assembly rotatably connected to the support plate;

one end of the pull rod is connected with the rotating assembly;

under the drive of the pull rod, the rotating assembly can rotate and drive the rotating piece to rotate, so that the vacuum circuit breaker is opened through the interlocking structure.

In the vacuum circuit breaker in the cubical switchboard, through setting up runner assembly and the pull rod that can promote the separating brake device, the staff can the manual drive pull rod, and then can realize urgent separating brake, realizes preventing the effect of electrified maloperation.

According to the opening mechanism, optionally, the rotating assembly comprises:

the pin shaft is fixed on the supporting plate;

the hinge pin is arranged on the plate body in a penetrating mode, the plate body can rotate by taking the hinge pin as an axis, and the pull rod is connected to the plate body.

The structure of the pin shaft and the plate body is adopted, the structure is simple, and the assembly is convenient.

According to the opening mechanism, optionally, the plate body has a protruding portion, the protruding portion can switch between a first position and a second position along with the rotation of the plate body, the protruding portion is separated from the rotating member when located at the first position, and in the process that the protruding portion moves from the first position to the second position, the protruding portion can drive the rotating member to move, so that the rotating member drives the interlocking structure to move to the position where the vacuum circuit breaker is opened.

According to the opening mechanism, optionally, the plate body is parallel to the support plate, and the rotating member is parallel to the support plate. The structure is simple and convenient to install.

According to the opening mechanism as described above, optionally, the opening mechanism further includes:

a reset member for resetting the rotating assembly to reset the protrusion from the second position to the first position.

According to the opening mechanism, optionally, the reset member is a tension spring, one end of the reset member is connected to the rotating assembly, and the other end of the reset member is connected to the supporting plate.

According to the opening mechanism, optionally, the rotating assembly further includes a hook fixed to the pin, one end of the reset member is connected to the hook, and the other end of the reset member is connected to the supporting plate. The mode of hook-and-hook piece is adopted, so that the reset piece is fixed more firmly.

According to the opening mechanism, optionally, the rotating component and the pull rod are located on one side of the support plate, the rotating member is located on the other side of the support plate, the support plate is provided with an opening, and the rotating component can be in contact with the rotating member through the opening. Thus, the opening mechanism of the embodiment is realized under the condition that the original structure is not changed as much as possible.

Another aspect of the present invention provides a vacuum circuit breaker, including any one of the above-mentioned opening mechanism for a vacuum circuit breaker.

The utility model discloses another aspect provides a cubical switchboard, include as above arbitrary the separating brake mechanism for vacuum circuit breaker.

Drawings

The above and other features and advantages of the present invention will become more apparent to those of ordinary skill in the art by describing in detail preferred embodiments thereof with reference to the attached drawings, in which:

fig. 1 is an initial structural schematic diagram of a switching-off mechanism for a vacuum circuit breaker according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a vacuum circuit breaker according to an embodiment of the present invention after rotation of the opening mechanism.

Fig. 3 is a schematic diagram of an interlocking structure of a vacuum circuit breaker in a closing state according to the present invention.

Fig. 4 is a schematic diagram of an interlocking structure of the vacuum circuit breaker in the open state according to an embodiment of the present invention.

Reference numerals:

11-support plate

12-rotating member

131-linkage member

132-half shaft

133-Long pin

134-trip part

135-principal axis

136-baffle

21-rotating assembly

211-Pin shaft

212-plate body

2123-projection

213-hook hanging part

22-pull rod

23-reset piece

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is further described in detail by referring to the following embodiments.

The embodiment provides an opening mechanism for a vacuum circuit breaker, which is used for opening the vacuum circuit breaker. The switching-off mechanism can be particularly applied to a fixed vacuum circuit breaker, and can be switched off under the condition that a cabinet door of a switch cabinet is not opened. The fixed vacuum circuit breaker means that the vacuum circuit breaker is fixed in a switchgear, which is different from a handcart type switchgear.

As shown in fig. 1, a schematic structural diagram of the opening mechanism for a vacuum circuit breaker according to the present embodiment is shown. It should be noted that the opening mechanism may be considered as a part of the vacuum circuit breaker. The opening mechanism comprises an opening device which comprises a supporting plate 11, a rotating piece 12 and an interlocking structure. Wherein, the rotating member 12 can be rotatably connected to the supporting plate 11 and can rotate to drive the linkage structure to move, and the linkage structure is connected to the moving end of a vacuum circuit breaker and can drive the moving end to move so as to open the vacuum circuit breaker. By pushing the rotating member 12, the interlocking structure can be moved, and the vacuum circuit breaker is opened. The support plate 11, the rotatable member 12 and the interlocking structure may all be of the prior art. That is, the vacuum circuit breaker itself has a mechanism for opening the vacuum circuit breaker, such as the opening device described above. The opening device can also be a device for emergency opening of the vacuum circuit breaker, for example, an emergency opening button is arranged on the circuit breaker, and the opening device can be driven to move by pressing the button so as to open the vacuum circuit breaker. The interlocking structure may be any one of the prior art structures, and may also be the interlocking structure shown in fig. 3 and 4, as long as the vacuum circuit breaker can be opened. The rotating member 12 can rotate at a certain angle, such as an obtuse angle or an acute angle, and even can rotate only within a certain angle range through the structural design, which can be specifically selected according to actual needs and will not be described herein again. The rotary member 12 may be parallel to the support plate 11, i.e. the rotary member 12 may rotate in a plane parallel to the support plate 11.

In this embodiment, the opening mechanism for the vacuum circuit breaker further includes a rotating assembly 21 and a pull rod 22. The rotating assembly 21 is rotatably connected to the supporting plate 11, and one end of the pull rod 22 is connected to the rotating assembly 21. The rotating assembly 21 can rotate under the driving of the pull rod 22, and drives the rotating member 12 to rotate, so as to open the vacuum circuit breaker. The other end of the pull rod 22 can be connected to other structures or extend out of the set position of the switch cabinet according to actual needs, and is not limited herein.

The rotating assembly may specifically include a pin 211 and a plate 212. Wherein, on the round pin axle 211 was fixed in support piece, round pin axle 211 worn to locate plate body 212 and plate body 212 can use round pin axle 211 to rotate as the axle, and pull rod 22 is connected in plate body 212. The plate 212 may be irregularly shaped to avoid other components on the support plate 11, for example, the plate 212 may rotate without interfering with other components. Specifically, the plate body 212 may be parallel to the support plate 11, i.e., the plate body 212 may rotate in a plane parallel to the support plate 11. The structure of the pin shaft 211 and the plate body 212 is adopted, the structure is simple, and the assembly is convenient.

As shown in fig. 1 and 2, the plate body 212 has a protruding portion 2123, the protruding portion 2123 can switch between a first position and a second position along with the rotation of the plate body 212, the protruding portion 2123 is separated from the rotating element 12 when located at the first position, and during the movement of the protruding portion 2123 from the first position to the second position, the protruding portion 2123 can drive the rotating element 12 to move, so that the rotating element 12 drives the interlocking structure to move to the position where the vacuum circuit breaker is opened. A protrusion 2123, such as an arc-shaped protrusion 2123 on plate 212, wherein when plate 212 is not driven by lever 22 to move, protrusion 2123 does not contact rotary member 12; when the pull rod 22 drives the plate body 212 to move, the protrusion 2123 gradually approaches a position where the rotating element 12 can be contacted, and after the contact, the rotating element 12 is continuously driven to rotate so as to reach the second position, in the process, the rotating element 12 can drive the interlocking structure to move, so that the vacuum circuit breaker is switched off.

As shown in fig. 1 and 2, the rotary member 12 and the rotating assembly 21 may be respectively located at both sides of the support plate 11. This is because the rotating assembly 21 is typically located within a protective housing, one side of which is the support plate 11. The rotary member 12 and the pull rod 22 added in this embodiment are arranged on the other side of the support plate 11, namely, on the outer side of the protective casing, which facilitates installation. Accordingly, the support plate 11 may have an opening through which the rotating member 21 contacts the rotating member 12. For example, a portion of the rotating member 12 can be rotated in the opening, or a portion of the rotating assembly 21 can be rotated in the opening. In addition, the opening should be large enough that the protrusion 2123 should remain in contact with the rotating element 12 at all times as the protrusion 2123 comes into contact with the rotating element 12 and moves to the second position. Therefore, the opening mechanism of the embodiment is realized and the process is simplified under the condition that the original structure is not changed as much as possible. In particular, the opening may be an arcuate slot.

The pull rod 22 of this embodiment may be specifically a strip rod, and the pull rod 22 is pulled to drive the rotating assembly 21 to rotate, for example, to drive the plate body 212 to rotate. Fig. 1 and 2 show that, when the lever 22 is actuated, the plate body 212 rotates clockwise and the rotary member rotates counterclockwise. Fig. 1 is a schematic view of the protrusion 2123 in the first position, and fig. 2 is a schematic view of the protrusion moving from the first position to the second position. As can be seen in fig. 1 and 2, the protrusion 2123 can push the rotary member 12 through the opening. The other end of the pull rod 22 of this embodiment can be connected to a linkage mechanism, and the staff can pull the pull rod 22 by operating the linkage mechanism, and the specific structure or function of the linkage mechanism can be set according to actual needs. Of course, the other end of the pull rod 22 may also directly extend out of the cabinet body of the switch cabinet, and the worker can drive the plate body 212 to rotate by pulling the pull rod 22. The pull direction of the pull rod 22 can be a downward pull, as indicated by arrow D in fig. 2.

Optionally, the opening mechanism of the present embodiment further includes a reset member 23, and the reset member 23 is used for resetting the rotating assembly 21 to reset the protrusion 2123 from the second position to the first position. In the unstressed condition of the pull rod 22, the position of the rotating assembly 21 is as shown in fig. 1. After the tension rod 22 is stressed, the protrusion 2123 moves from the first position to the second position. In the case where the pull rod 22 is again unstressed, the return member 23 is able to return the rotating assembly 21 to the position shown in fig. 1, i.e. to return the projection 2123 from the second position to the first position. The reset member 23 may be a tension spring, one end of which is connected to the rotating assembly 21, and the other end of which is connected to the supporting plate 11, and as an exemplary illustration, the tension spring may be connected to the pin 211 of the rotating assembly 21. Or may be connected to a part to which the pin 211 is fixed. The component is, for example, a hook 213, the hook 213 is fixed to the pin 211, and the tension spring can be hooked on the hook 213. The hook member 213 can firmly fix the restoring member 23.

As an exemplary illustration, the interlocking structure of the present invention may be as shown in fig. 3 and 4, and includes a link 131, a half shaft 132, a long pin 133, a trip element 134, a main shaft 135, a blocking plate 136 and a trip spring (not shown).

Wherein the link 131 is slidably connected to the support plate 11. The link 131 can move in one direction and the opposite direction. The half shaft 132 is rotatably connected to the support plate 11, and the half shaft 132 has a notch. That is, the half shaft 132 has a step in cross section, and the recessed portion is a notch. The long pins 133 are fixedly provided to the half shafts 132. During sliding, the link 131 pushes the long pin 133, which in turn rotates the half shaft 132.

The trip element 134 is rotatably coupled to the support plate 11 such that upon rotation of the half shaft 132, the trip element 134 is able to rotate into the notch from a first position blocked by the half shaft 132.

The blocking plate 136 is fixed to the main shaft 135, when the trip element 134 is located at the first position, the blocking plate 136 is blocked by the trip element 134 to prevent the main shaft 135 from rotating to the opening position, and when the trip element 134 is located in the notch, the blocking plate 136 can be separated from the trip element 134, and then the main shaft 135 can rotate to the opening position to open the vacuum circuit breaker.

The opening spring can apply a pushing force to the main shaft 135 to rotate the main shaft 135 to the opening position. When the trip element 134 is in the first position, the blocking plate 136 is blocked by the trip element 134, and the main shaft 135 cannot rotate to a position where the vacuum circuit breaker can be opened, as shown in fig. 3. After the trip element 134 enters the notch, the blocking plate 136 is not blocked by the trip element 134, so that the main shaft 135 can rotate to the position of opening the vacuum circuit breaker under the action of the opening spring.

Specifically, upon rotation of the rotary member 12, the rotary member can push the link 131 to move, and the link 131 can push the long pin 133 to rotate the half shaft 132, and thus the trip element 134, into the notch. To open the vacuum interrupter.

The orientation shown in fig. 3 and 4 is used as a specific example below. Fig. 3 is a schematic diagram of an interlocking structure of the vacuum circuit breaker in a closing state. When the pull rod 22 is pulled, the rotating member 12 rotates counterclockwise, so that the link member 131 moves to the left, and the long pin 133 is pushed to drive the half shaft 132 to rotate counterclockwise, so that the trip element 134 rotates counterclockwise under the action of the elastic member, and the blocking plate 136 is no longer blocked by the trip element 134. Under the action of the opening spring, the main shaft 135 rotates counterclockwise, so that the vacuum circuit breaker is opened. Fig. 4 shows a schematic diagram of an interlocking structure of the vacuum circuit breaker in an open state. Of course, the resetting of each component may be implemented by a corresponding resetting structure or other operations, which will not be described in detail.

According to the utility model discloses, vacuum circuit breaker in the cubical switchboard can promote the runner assembly 21 and the pull rod 22 of separating brake device through the setting, and then can realize urgent separating brake, realizes preventing the effect of electrified maloperation. This pull rod 22 can be connected in isolator's operating end through additional link gear, because the isolator of forbidden operation when vacuum circuit breaker closes a floodgate electrified, it is dangerous to go to operate isolator when vacuum circuit breaker closes a floodgate, consequently can adopt runner assembly 21 and pull rod 22 earlier with vacuum circuit breaker separating brake, and then guarantee staff's safety.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A separating brake mechanism for vacuum circuit breaker, separating brake mechanism includes a separating brake device, separating brake device includes a backup pad (11), a rotating member (12) and an interlocking structure, rotating member (12) rotatably connect in backup pad (11) and accessible rotate and drive the interlocking structure motion, interlocking structure connects in a vacuum circuit breaker's the end of moving and can drive the end of moving and remove so that vacuum circuit breaker separating brake, its characterized in that, separating brake mechanism still includes:

a rotating assembly (21), said rotating assembly (21) being rotatably connected to said support plate (11);

a pull rod (22), one end of the pull rod (22) is connected with the rotating assembly (21);

under the drive of pull rod (22), runner assembly (21) can rotate to drive swivel (12) rotate, make through interlocking structure the vacuum circuit breaker separating brake.

2. Opening mechanism according to claim 1, characterized in that said rotating assembly (21) comprises:

the pin shaft (211), the pin shaft (211) is fixed on the supporting plate (11);

the novel LED lamp comprises a plate body (212), wherein a pin shaft (211) penetrates through the plate body (212), the plate body (212) can rotate by taking the pin shaft (211) as a shaft, and a pull rod (22) is connected to the plate body (212).

3. The opening mechanism according to claim 2, wherein the plate (212) has a protrusion (2123), the protrusion (2123) is switchable between a first position and a second position along with the rotation of the plate (212), the protrusion (2123) is separated from the rotary member (12) when located at the first position, and the protrusion (2123) can move the rotary member (12) during the movement of the protrusion (2123) from the first position to the second position, so that the rotary member (12) moves the interlocking structure to open the vacuum circuit breaker.

4. Opening mechanism according to claim 2, characterized in that said plate (212) is parallel to said support plate (11) and said rotating member (12) is parallel to said support plate (11).

5. The opening mechanism according to claim 3, further comprising:

a resetting member (23), said resetting member (23) being adapted to reset said rotating assembly (21) to reset said protrusion (2123) from the second position to the first position.

6. The opening mechanism according to claim 5, characterized in that the resetting member (23) is a tension spring, one end of the resetting member (23) is connected to the rotating component (21), and the other end of the resetting member (23) is connected to the supporting plate (11).

7. The opening mechanism according to claim 5, wherein said rotating member (21) further comprises a hooking member (213), said hooking member (213) is fixed to said pin (211), and said reset member (23) has one end connected to said hooking member (213) and the other end connected to said supporting plate (11).

8. Opening mechanism according to any one of claims 1-4, characterized in that the rotating member (21) and the pull rod (22) are located on one side of the support plate (11), the rotating member (12) is located on the other side of the support plate (11), the support plate (11) has an opening through which the rotating member (21) can contact the rotating member (12).

9. The opening mechanism according to any one of claims 1 to 4, wherein the interlocking structure comprises:

a linkage member (131), the linkage member (131) being slidably connected to the support plate (11);

a half shaft (132), said half shaft (132) rotatably connected to said support plate (11), said half shaft (132) having a notch;

a long pin (133), said long pin (133) being fixedly disposed to said half shaft (132);

a trip element (134), said trip element (134) being rotatably coupled to said support plate (11), said trip element (134) being rotatable into said notch from a first position blocked by said half shaft (132) upon rotation of said half shaft (132);

a main shaft (135);

a blocking plate (136), wherein the blocking plate (136) is fixed on the main shaft (135), when the tripping element (134) is located at the first position, the blocking plate (136) is blocked by the tripping element (134) to prevent the main shaft (135) from rotating to the opening position, when the tripping element (134) is located at the notch, the blocking plate (136) can be separated from the tripping element (134), and the main shaft (135) can rotate to the opening position to open the vacuum circuit breaker;

a opening spring capable of applying a pushing force to the main shaft (135) to rotate the main shaft (135) to an opening position;

under the condition that the rotating piece (12) rotates, the rotating piece can push the linkage piece (131) to move, and the linkage piece (131) can push the long pin (133) to enable the half shaft (132) to rotate, so that the tripping part (134) enters the notch to enable the vacuum circuit breaker to be switched off.

10. Vacuum interrupter, characterized in, that it comprises a tripping mechanism for a vacuum interrupter according to any of the claims 1-9.

11. Switchgear, characterized in that it comprises a breaking mechanism for vacuum circuit breakers according to any of the claims 1 to 9.