CN208570454U - The vacuum permanent magnet circuit breaker of separating brake protection - Google Patents

Abstract

The utility model relates to a kind of vacuum permanent magnet circuit breakers of separating brake protection; including shell, pole, insulated pull rod, main shaft, transmission arm and permanent magnet mechanism; the lower part of shell is coated with protection shaft; protection shaft is located at the intracorporal part of shell and is provided with protection swing arm; protect shaft with protection shaft rotation; protection swing arm is located at the lower section of transmission arm, protects the other end of swing arm corresponding with the side of transmission arm connecting with permanent magnet mechanism, and the one end of shaft being located at outside shell is protected to be provided with handle.The protection swing arm of the lower end setting separating brake protection of transmission arm of the utility model in vacuum circuit breaker; when maintenance of equipment and line maintenance; make the lower end for protecting swing arm to support transmission arm by operation handle; transmission arm can not also fall under the action of protecting swing arm; the moving conductive rod of vacuum interrupter remains motionless, cannot achieve feed motion, to guarantee safe construction safety operation; it eliminates safe hidden trouble, guarantees the personal safety of operation maintenance personal.

Description

The vacuum permanent magnet circuit breaker of separating brake protection

Technical field

The utility model relates to electric switch equipment technical fields, and in particular to a kind of vacuum and permanent magnet open circuit of separating brake protection Device.

Background technique

Breaker is the electric current referred to close, carry and cut-off under normal loop condition and can close, when defined Interior carrying and the switching device for cut-offfing the electric current under abnormal loop condition.Breaker can be used to distribute electric energy, infrequently open Dynamic asynchronous motor protects the implementations such as power circuit and motor, when serious overload or short circuit and under-voltage occurs in they Etc. failures when can automatic shutdown circuit, function is equivalent to Fuse switch and crosses the combination of underheat relay etc..And Change components are not needed after disjunction fault current generally.Currently, having had been widely used.

Vacuum circuit breaker in the prior art, which has begun using permanent-magnet manipulating mechanism, replaces traditional operating machine of the spring Structure makes the insulated pull rod 3 in electrode column of vacuum arc extinguishing chamber move up and down by the drive rod connecting with permanent-magnet manipulating mechanism.But The vacuum circuit breaker of existing permanent-magnet operating mechanism is that electric generation magnetic field is obtained by coil, so that transmission arm 8 be made to act, is driven true The moving conductive rod of empty arc-chutes moves up and down, and realizes combined floodgate or separating brake movement.During carrying out maintenance of equipment and line maintenance, It must assure that vacuum circuit breaker disconnects separating brake, still, existing vacuum circuit breaker is arranged after separating brake without protection accordingly It applies, once maloperation or maintenance personal's cooperation occurs not enough, once the coil of permanent-magnet operating mechanism obtains electric, vacuum circuit breaker realization Rapid closing influences the personal safety for operating maintenance personal there are certain equipment safety hidden danger.

Utility model content

In conclusion in order to overcome the shortcomings of prior art problem, the utility model provides a kind of the true of separating brake protection Empty permanent-magnet breaker, it is the protection swing arm of the lower end setting separating brake protection of the transmission arm in vacuum circuit breaker, works as equipment When maintenance and line maintenance, operator makes the lower end for protecting swing arm to support transmission arm by operation handle, even if permanent magnet operating The coil of mechanism obtains electric, and transmission arm can not also fall under the action of protecting swing arm, and the moving conductive rod of vacuum interrupter is protected always It holds motionless, cannot achieve feed motion, to guarantee safe construction safety operation, eliminate safe hidden trouble, guarantee operation maintenance people The personal safety of member

In order to solve the above technical problems, the technical solution adopted by the utility model is:

A kind of vacuum permanent magnet circuit breaker of separating brake protection, in which: including shell, pole, insulated pull rod, main shaft, biography Swing arm and permanent magnet mechanism, the shell are insulation shell, and one side is provided with pole, and the other side is set in the shell Permanent magnet mechanism is set, the lower end of the permanent magnet mechanism and one end of transmission arm are hinged, and the lower part of the shell is coated with main shaft, The middle part of the transmission arm and main shaft, which relatively rotate, to be connected, the lower end of the other end connection insulated pull rod of the transmission arm, The moving conductive rod of vacuum interrupter that the upper end connection of the insulated pull rod is arranged in pole, under the shell Portion is coated with protection shaft, and protection shaft is connected with respect to housing into rotation, and the protection shaft is located at the intracorporal part setting of shell There is protection swing arm, one end of the protection swing arm is connect with protection shaft, and with protection shaft rotation, the protection swing arm Positioned at the lower section of transmission arm, the other end of the protection swing arm is corresponding with the side of transmission arm connecting with permanent magnet mechanism, institute The one end of the protection shaft stated being located at outside shell is provided with handle.

Further, the part of the protection shaft being located at outside shell is provided with ratchet, and the ratchet turns with protection Axis rotates, and is provided with spine slot on the excircle of the ratchet, pawl is provided on the shell, the pawl passes through company Outbound axis is connect with shell, and pawl, with respect to housing into rotation, the pawl is corresponding with the spine slot on the excircle of ratchet, described Shell on be provided with limited block.

Further, the connecting pin outer shaft sleeve is equipped with spring, and the spring is between shell and pawl.

Further, the lower part of the shell is coated with countershaft, and the countershaft is connected with respect to housing into rotation, the pair Axle position is provided with hand wheel in one end outside shell, and the countershaft is located at the intracorporal part of shell and is provided with manual swing arm, institute The manual swing arm one end stated is connect with countershaft, and the other end is corresponding with the one end of transmission arm connecting with permanent magnet mechanism.

The utility model has the following beneficial effects:

1, the protection swing arm of the lower end setting separating brake protection of transmission arm of the utility model in vacuum circuit breaker, when setting When standby maintenance and line maintenance, operator makes the lower end for protecting swing arm to support transmission arm by operation handle, even if permanent magnetism is grasped The coil for making mechanism obtains electric, and transmission arm can not also fall under the action of protecting swing arm, and the moving conductive rod of vacuum interrupter is always It remains stationary, cannot achieve feed motion, to guarantee safe construction safety operation, eliminate safe hidden trouble, guarantee operation maintenance The personal safety of personnel.

2, the setting of the ratchet and pawl of the utility model can effectively prevent protection shaft from reversing, to guarantee Protect the fastness of swing arm support transmission arm.

3, the hand of time vacuum circuit breaker is capable of in the setting of the countershaft, hand wheel of this city utility model and manual swing arm Manual operation can be used in the case where permanent-magnet operating mechanism damage is invalid in dynamic switching.

4, the utility model structure is simple, easy to use, low in cost, in maintenance of equipment maintenance or line maintenance process In, it can effectively ensure that breaker cannot achieve combined floodgate, realize the purpose for guaranteeing safety in production.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the backsight structural representation of the utility model Fig. 1.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing.

As shown in Figure 1 and Figure 2, a kind of vacuum permanent magnet circuit breaker of separating brake protection, including shell 1, pole 2, insulation drawing Bar 3, main shaft 7, transmission arm 8 and permanent magnet mechanism 4, the shell 1 are insulation shell 1, and one side is provided with pole 2, institute Permanent magnet mechanism 4 is arranged in the other side in the shell 1 stated, and the lower end of the permanent magnet mechanism 4 and one end of transmission arm 8 are hinged, described The lower part of shell 1 be coated with main shaft 7, the middle part of the transmission arm 8 and main shaft 7 are relatively rotated and are connected, the transmission arm 8 Other end connection insulated pull rod 3 lower end, the upper end of the insulated pull rod 3 connects the vacuum being arranged in pole 2 The moving conductive rod of arc-chutes, the lower part of the shell 1 are coated with protection shaft 9, and protection shaft 9 is rotatablely connected with respect to shell 1, The part that the protection shaft 9 is located in shell 1 is provided with protection swing arm 10, one end of the protection swing arm 10 and protection Shaft 9 connects, and rotates with protection shaft 9, and the protection swing arm 10 is located at the lower section of transmission arm 8, the protection swing arm 10 other end is corresponding with the side of transmission arm 8 connecting with permanent magnet mechanism 4, and the protection shaft 9 is located at outside shell 1 One end is provided with handle 15.The part of the protection shaft 9 being located at outside shell 1 is provided with ratchet 14, the ratchet 14 It is rotated with protection shaft 9, is provided with spine slot on the excircle of the ratchet 14, pawl 12, institute are provided on the shell 1 The pawl 12 stated is connect by connecting pin shaft with shell 1, and pawl 12 is rotated relative to shell 1, and connecting pin outer shaft sleeve is equipped with spring, The spring is between shell 1 and pawl 12.The pawl 12 is corresponding with the spine slot on the excircle of ratchet 14, described Shell 1 on be provided with limited block 13.

The lower part of the shell 1 is coated with countershaft 5, and the countershaft 5 is rotatablely connected with respect to shell 1, the countershaft 5 One end outside shell 1 is provided with hand wheel 11, and the part that the countershaft 5 is located in shell 1 is provided with manual swing arm 6, described 6 one end of manual swing arm is connect with countershaft 5, the one end pair of the other end and transmission arm 8 connecting with permanent magnet mechanism 4 It answers.

In use, permanent magnet mechanism 4 is operated when needing to repair equipment maintenance or line maintenance needs to power off, 4 opening coil of permanent magnet mechanism obtains electric generation magnetic field, moves upwards the dynamic iron core of permanent magnet mechanism 4, drives transmission arm 8 and permanent magnetic motor One end that structure 4 connects moves up, and transmission arm 8 is driven around main shaft 7, thus the one end for connecting transmission arm 8 with insulated pull rod 3 It moves down, the moving conductive rod of vacuum interrupter is pulled to move down, realize separating brake, later, to guarantee safety, operator turns Fixed handle 15 makes that shaft 9 is protected to rotate, to make that swing arm 10 is protected to rotate, the support of protection swing arm 10 holds out against transmission arm 8, energy Enough effective guarantee transmission arms 8 can not fall, that is, cannot achieve feed motion, the setting of ratchet 14 and pawl 12 can be effective It avoids protection shaft 9 from reversing, guarantees the fastness of support.Maintenance finishes, when needing to close a floodgate, press pawl 12, make pawl 12 from Be detached from the spine slot of ratchet 14, make to protect shaft 9 be in free state again, Low market efficiency handle 15, make to protect swing arm 10 and Transmission arm 8 is detached from, then normally combined floodgate separating brake acts the vacuum circuit breaker.

It is noted that above-described embodiment is the affiliated technology neck to the illustrative and not limiting of technical solutions of the utility model The equivalent replacement of domain those of ordinary skill or the other modifications made according to the prior art, as long as not exceeding the utility model skill The thinking and range of art scheme, should be included within interest field required by the utility model.

Claims (4)

1. a kind of vacuum permanent magnet circuit breaker of separating brake protection, it is characterised in that: including shell, pole, insulated pull rod, master Axis, transmission arm and permanent magnet mechanism, the shell are insulation shell, and one side is provided with pole, another in the shell Permanent magnet mechanism is arranged in side, and the lower end of the permanent magnet mechanism and one end of transmission arm are hinged, and the lower part of the shell installs There is main shaft, the middle part of the transmission arm and main shaft, which relatively rotate, to be connected, and the other end of the transmission arm connects insulated pull rod Lower end, the moving conductive rod of vacuum interrupter that the upper end connection of the insulated pull rod is arranged in pole is described The lower part of shell is coated with protection shaft, and protection shaft is connected with respect to housing into rotation, and it is intracorporal that the protection shaft is located at shell Part is provided with protection swing arm, and one end of the protection swing arm is connect with protection shaft, and with protection shaft rotation, described Protection swing arm is located at the lower section of transmission arm, the other end of the protection swing arm and the side of transmission arm connecting with permanent magnet mechanism Corresponding, the one end of the protection shaft being located at outside shell is provided with handle.

2. the vacuum permanent magnet circuit breaker of separating brake protection according to claim 1, it is characterised in that: the protection shaft Part outside shell is provided with ratchet, and the ratchet is rotated with protection shaft, is arranged on the excircle of the ratchet There is spine slot, pawl is provided on the shell, the pawl is connect by connecting pin shaft with shell, and pawl is with respect to shell Rotation, the pawl is corresponding with the spine slot on the excircle of ratchet, is provided with limited block on the shell.

3. the vacuum permanent magnet circuit breaker of separating brake protection according to claim 2, it is characterised in that: outside the connection pin shaft It is set with spring, the spring is between shell and pawl.

4. the vacuum permanent magnet circuit breaker of separating brake protection according to claim 1, it is characterised in that: the lower part of the shell It is coated with countershaft, the countershaft is connected with respect to housing into rotation, and one end that the countershaft is located at outside shell is provided with to be turned manually Wheel, the countershaft are located at the intracorporal part of shell and are provided with manual swing arm, and described manual swing arm one end is connect with countershaft, another One end is corresponding with the one end of transmission arm connecting with permanent magnet mechanism.