CN212010834U

CN212010834U - Operating mechanism for ring main unit

Info

Publication number: CN212010834U
Application number: CN202021187145.4U
Authority: CN
Inventors: 刘军华; 赵微微; 刘妍妍; 刘文华; 张涛
Original assignee: Zhejiang Xuanyue Electric Co ltd
Current assignee: Zhejiang Xuanyue Electric Co ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2020-11-24
Anticipated expiration: 2030-06-23

Abstract

The utility model relates to an operating device for looped netowrk cabinet, the one end of keeping apart the operating axis is connected on the medium plate, the other end of keeping apart the operating axis forms keeps apart the flat axle, it is just to keeping apart the connecting hole to keep apart the flat axle, keep apart the both sides that are close to on the operating axis and keep apart the limiting plate and form first narrowing portion and first locating part respectively, be provided with the restriction on the first locating part and keep apart operating axis turned angle's isolation flange, the one end of ground connection operating axis is connected on the medium plate, the other end of ground connection operating axis forms the ground connection flat axle, the ground connection flat axle is just to the ground connection connecting hole, the both sides that are close to the ground connection limiting plate on the ground connection operating axis form second narrowing portion and second locating part respectively, be provided with restriction ground connection operating axis turned angle's ground flange on. The utility model discloses last operating axis action of operating device is reliable and stable, and mechanical long service life, and can not take place the malfunction, divide and shut to instruct accurate, travel switch wiring simple to operate.

Description

Operating mechanism for ring main unit

Technical Field

The utility model relates to an electrical equipment technical field especially relates to an operating device for looped netowrk cabinet.

Background

With the economic development and the technological progress, the ring main units are widely used in many large-scale power utilization places. The ring main unit is an electrical device with a group of high-voltage switch devices arranged in a steel plate metal main unit body or made into an assembled interval ring main unit, and the core part of the ring main unit adopts a load switch and a fuse, so that the ring main unit has the advantages of simple structure, small volume, low price, capability of improving power supply parameters and performance, power supply safety and the like.

As shown in fig. 1 and 2, an operating mechanism of a conventional ring network cabinet includes a front plate a, a rear plate b, and a bottom plate c, wherein an isolation shaft bracket h and a grounding shaft bracket i are respectively fixed on the bottom plate c, an isolation shaft tube d passes through the isolation shaft bracket h, a grounding shaft tube e passes through the grounding shaft bracket i, one end of the isolation shaft tube d and one end of the grounding shaft tube e are respectively connected in an isolation positioning hole b1 and a grounding positioning hole b2 of the rear plate b, the other end of the isolation shaft tube d forms an isolation hexagonal shaft d1, the isolation hexagonal shaft d1 faces an isolation operating hole a1 of the front plate a, the other end of the grounding shaft tube e forms a grounding hexagonal shaft e1, the grounding hexagonal shaft e1 faces a grounding operating hole a2 of the front plate a, plastic fasteners j are respectively fixed on the isolation shaft tube d and the grounding shaft tube e, and the plastic fasteners j are respectively arranged between the rear plate b and the isolation shaft bracket h and the grounding shaft bracket i, be provided with isolation drive block d2 on the isolation central siphon d, be provided with ground connection drive block e2 on the ground connection central siphon e, isolation drive block d2 can be along with the rotation drive below T type square steel action of isolation central siphon d to drive the action of isolation deciliter indicator f and instruct, ground connection drive block e2 can be along with the rotation drive below T type square steel action of ground connection central siphon e, thereby drive the action of ground connection deciliter indicator g and instruct. The operating mechanism with the structure has the following defects: 1. when an operator operates the isolation shaft tube, the handle crank is required to be sleeved on the isolation hexagonal shaft for rotating operation, radial acting force is inevitably generated in the rotating process, a fulcrum is formed at the joint of the isolation shaft tube and the rear plate, the isolation shaft tube becomes a lever, the isolation shaft tube is easily separated from the rear plate after long-term use, the operation mechanism cannot normally operate, and the grounding shaft tube is also the same; 2. under the condition that the ring main unit is shaken and collided by the outside, the isolation shaft tube and the grounding shaft tube are easy to deflect, so that an operating mechanism can generate misoperation, and the condition that the misoperation occurs when an adapted electric field is combined is extremely dangerous; 3. the isolation switching-on and switching-off indicating piece realizes the switching-on and switching-off indication of an isolation shaft through the matching of an isolation driving block on an isolation shaft tube and T-shaped square steel below the isolation driving block, but the isolation switching-on and switching-off indicating piece is not completely synchronous with the isolation shaft tube, and in the actual operation process, when the isolation shaft tube does not rotate to a switching-off position, the isolation switching-on and switching-off indicating piece jumps to a switching-off indicating mark, so that the grounding switching-on and switching-off indicating piece also has the problem that the defect can cause an operator to mistakenly consider that the switching-on and switching-off operation is completed, and great potential safety hazard; 4. the limit switch is usually installed on the rear plate, but the limit switch is inconvenient to install and wire.

Disclosure of Invention

In view of the above, an object of the present invention is to provide an operating mechanism for a ring main unit, which can ensure that an operating shaft can be firmly and stably connected to the mechanism, and the operating shaft will not shift; the switching of the switching-on and switching-off states caused by deflection of the operating shaft due to shaking can be avoided; the opening and closing indication can rotate coaxially with the corresponding operating shaft, and the condition that the actual state is inconsistent with the indication state cannot be generated; meanwhile, the travel switch can be conveniently connected to the operating mechanism, and positioning and wiring are facilitated.

In order to achieve the above object, the present invention adopts such an operating mechanism for a ring main unit, which comprises a front plate, a rear plate, a bottom plate, an isolation limiting plate and a ground limiting plate are disposed on the bottom plate, an isolation operating shaft is disposed on the isolation limiting plate, a ground operating shaft is disposed on the ground limiting plate, an isolation operating hole and a ground operating hole are respectively formed at the positions of the front plate opposite to the isolation operating shaft and the ground operating shaft, an isolation connecting hole and a ground connecting hole are respectively formed at the positions of the rear plate opposite to the isolation operating shaft and the ground operating shaft, the operating mechanism further comprises a middle plate, one end of the isolation operating shaft is connected to the middle plate, an isolation flat shaft is formed at the other end of the isolation operating shaft, the isolation flat shaft is opposite to the isolation connecting hole, a first narrowing portion and a first positioning portion are respectively formed at two sides of the isolation operating shaft close to the isolation limiting plate, an isolation flange for limiting the rotation, one end of the grounding operation shaft is connected to the middle plate, the other end of the grounding operation shaft forms a grounding flat shaft, the grounding flat shaft is opposite to the grounding connection hole, a second narrowing portion and a second positioning portion are respectively formed on the two sides, close to the grounding limiting plate, of the grounding operation shaft, a grounding flange limiting the rotation angle of the grounding operation shaft is arranged on the second positioning portion, and clamp springs are arranged on the first narrowing portion and the second narrowing portion.

The isolation operation shaft and the grounding operation shaft on the operation mechanism are not directly connected to the back plate any more, but one end of the isolation operation shaft and one end of the grounding operation shaft are connected to the middle plate, the other end of the isolation operation shaft and the other end of the grounding operation shaft are respectively connected to the isolation limiting plate and the grounding limiting plate, the other end of the isolation operation shaft forms an isolation flat shaft facing the isolation connecting hole on the back plate, the other end of the grounding operation shaft forms a grounding flat shaft facing the grounding connecting hole on the back plate, the isolation flat shaft is connected with the isolation flat shaft through a shaft sleeve matched with the isolation flat shaft on an external isolation switch, a shaft sleeve matched with the grounding flat shaft on the external grounding switch penetrates through the grounding connecting hole to be connected with the grounding flat shaft, so that when an operator operates the isolation operation shaft and the grounding operation shaft, the isolation operation shaft and the grounding operation shaft can be firmly and stably connected to the operation mechanism, the clamp spring is used for limiting the axial displacement of the isolation operation shaft and the grounding operation shaft, so that the working reliability of the operation mechanism during opening and closing is improved, and the mechanical service life of the operation mechanism is prolonged.

The utility model discloses further set up to be provided with first stuck point device on the isolation flange, first stuck point device is including fixing first hollow post on the isolation flange, connecting at the first cap of first hollow post one end, connecting at the first ball of the first hollow post other end, connecting in first hollow post and by first cap and the first pressure spring of first ball extruded, keep apart the first ball groove that forms a plurality of and first ball adaptation on the limiting plate, first ball forms the linkage cooperation along with the isolation flange rotates with first ball groove.

The utility model discloses further set up to be provided with the second stuck point device on the ground flange, the second stuck point device is including fixing the hollow post of second on the ground flange, connecting at the second cap of the hollow post one end of second, connecting at the second ball of the hollow post other end of second, connecting in the hollow post of second and by the extruded second pressure spring of second cap and second ball, form a plurality of second ball grooves with second ball adaptation on the ground connection limiting plate, the second ball forms the linkage cooperation with second ball groove along with the ground flange rotation.

All be provided with the stuck point device on above-mentioned isolation flange and the ground flange, no matter be isolation operation axle or ground connection operation axle at rotatory in-process, because the effect of pressure spring on the stuck point device separately, make the ball support all the time and press on limiting plate separately, when isolation operation axle is in separating brake or combined floodgate state, first ball can fall into first ball groove, when ground connection operation axle is in separating brake or combined floodgate state, the second ball can fall into second ball groove, avoid the cabinet body to take place the striking or move the operating axis when shaking and take place the mistake and rotate, the security and the stability that improve operating device used.

The utility model discloses further set up to form first spacing post on keeping apart the limiting plate, form first arc groove on the isolation flange, first spacing post sets up at first arc inslot, form the spacing post of second on the ground connection limiting plate, form second arc groove on the ground connection flange, the spacing post setting of second is at the second arc inslot.

The first limiting column is connected in the first arc groove, so that the rotating angle of the isolation flange is limited, namely the rotation of the isolation operation shaft is limited; the second limiting column is connected in the second arc groove, and the rotation angle of the grounding flange is limited, namely the rotation of the grounding operation shaft is limited. The corner limiting structure is simple and the opening and closing actions are reliable.

The utility model discloses it is fixed to be provided with the isolation axle sleeve to serve the fixed of isolation operation axle, it connects on the medium plate to keep apart the axle sleeve, one side that the isolation axle sleeve is close to the front bezel forms and keeps apart axle sleeve integrated into one piece's isolation divide-shut brake indicator, one of ground connection operation axle serves the fixed ground connection axle sleeve that is provided with, ground connection hub connection is on the medium plate, one side that the ground connection axle sleeve is close to the front bezel forms and ground connection axle sleeve integrated into one piece's ground connection divide-shut brake indicator.

The isolation opening and closing indicator and the grounding opening and closing indicator are respectively and directly connected to the isolation operating shaft and the grounding operating shaft, so that the isolation opening and closing indicator and the isolation operating shaft rotate coaxially, the grounding opening and closing indicator and the grounding operating shaft rotate coaxially, the condition that the state indicated by the indicator is inconsistent with the actual opening and closing state of the operating shaft does not exist, and the operating mechanism can accurately indicate the states of the isolation operating shaft and the grounding operating shaft.

The utility model discloses further set up to keep apart the equal fixed mounting in upper end of the upper end of limiting plate and ground connection limiting plate has travel switch installing support, be provided with travel switch on the travel switch installing support, keep apart and be provided with the isolation cam on the operating axis, the isolation cam rotates along with the isolation operating axis and keeps apart travel switch on the limiting plate and forms linkage cooperation, be provided with the ground connection cam on the ground connection operating axis, the ground connection cam rotates along with the ground connection operating axis and forms linkage cooperation with the travel switch on the ground connection limiting plate.

The travel switch mounting bracket is arranged on the isolation limiting plate and the grounding limiting plate, and the travel switch can be directly in linkage fit with the cam arranged on the operating shaft through the rotation of the operating shaft, so that the complexity of the operating mechanism is greatly reduced, and meanwhile, the assembly and wiring are also convenient.

This practicality further sets up to medium plate, bottom plate, back plate be integrated into one piece.

This practicality further sets up to keep apart between limiting plate and the back plate, all be provided with the reference column between ground connection limiting plate and the back plate.

The structure enables the whole structure of the operating mechanism to be stable, and the isolation limiting plate and the grounding limiting plate are kept stable relative to the rear plate.

Drawings

Fig. 1 is a front perspective view of an operating mechanism in the background art.

Fig. 2 is a rear perspective view of the operation mechanism in the related art.

Fig. 3 is a front perspective view of the embodiment of the present invention.

Fig. 4 is a back perspective view of the embodiment of the present invention.

Fig. 5 is a perspective view of the embodiment of the present invention for isolating the operation shaft and isolating the limiting plate.

Fig. 6 is a perspective view of the embodiment of the present invention, including the ground operation shaft and the ground limiting plate.

Fig. 7 is the embodiment of the utility model provides an keep apart flange, first stuck point device and keep apart limiting plate explosion chart.

Fig. 8 is an explosion diagram of the grounding flange, the second clamping point device and the grounding limiting plate according to the embodiment of the present invention.

Fig. 9 is a left side view of the embodiment of the present invention with the clamp spring and the isolation flange removed.

Fig. 10 is a right side view of the embodiment of the present invention with the clamp spring and the grounding flange removed.

Fig. 11 is an application perspective view in the ring main unit according to the embodiment of the present invention.

Detailed Description

As shown in fig. 3, 4, 9, and 10, the present invention is an operating mechanism for a ring main unit, including a front plate 1, a rear plate 2, a bottom plate 3, and a middle plate 4, wherein the middle plate 4, the bottom plate 3, and the rear plate 2 are integrally formed, the bottom plate 3 is provided with an isolating limiting plate 5 and a grounding limiting plate 6, the isolating limiting plate 5 is penetrated with an isolating operating shaft 51, the grounding limiting plate 6 is penetrated with a grounding operating shaft 61, the front plate 1 is aligned with the isolating operating shaft 51 and the grounding operating shaft 61 to respectively form an isolating operating hole 11 and a grounding operating hole 12, the rear plate 2 is aligned with the isolating operating shaft 5 and the grounding operating shaft 6 to respectively form an isolating connecting hole 21 and a grounding connecting hole 22, one end of the isolating operating shaft 51 is connected to the middle plate 4, the other end of the isolating operating shaft 51 forms an isolating flat shaft 511, the isolating flat shaft 511 is aligned with the isolating connecting hole 21, a first narrowing portion 512 and a first positioning portion 513 are respectively formed on two sides of the isolation operation shaft 51 close to the isolation limiting plate 5, an isolation flange 52 for limiting the rotation angle of the isolation operation shaft 51 is arranged on the first positioning portion 513, one end of the grounding operation shaft 61 is connected to the middle plate 4, the other end of the grounding operation shaft 61 is formed into a grounding flat shaft 611, the grounding flat shaft 611 faces the grounding connection hole 22, a second narrowing portion 612 and a second positioning portion 613 are respectively formed on two sides of the grounding operation shaft 61 close to the grounding limiting plate 6, a grounding flange 62 for limiting the rotation angle of the grounding operation shaft 61 is arranged on the second positioning portion 613, and clamp springs (53 and 63) are respectively arranged on the first narrowing portion 512 and the second narrowing portion 612.

As shown in fig. 7, the isolation flange 52 is provided with a first clamping device 54, the first clamping device 54 includes a first hollow column 541 fixed on the isolation flange 52, a first cap 542 connected to one end of the first hollow column 541, a first ball 543 connected to the other end of the first hollow column 541, and a first pressure spring 544 connected to the first hollow column 541 and pressed by the first cap 542 and the first ball 543, the isolation limiting plate 5 is formed with a plurality of first ball grooves 55 adapted to the first ball 543, and the first ball 543 rotates with the isolation flange 52 to form a linkage fit with the first ball grooves 55.

As shown in fig. 8, the grounding flange 62 is provided with a second detent device 64, the second detent device 64 includes a second hollow post 641 fixed on the grounding flange 62, a second cap 642 connected to one end of the second hollow post 641, a second ball 643 connected to the other end of the second hollow post 641, and a second pressure spring 644 connected to the second hollow post 641 and pressed by the second cap 642 and the second ball 643, the ground limiting plate 6 is formed with a plurality of second ball grooves 65 adapted to the second ball 643, and the second ball 643 rotates with the grounding flange 62 and forms an interlocking fit with the second ball grooves 65.

As shown in fig. 5 and 6, the first stopper post 56 is formed on the separation limiting plate 5, the outer edge of the separation flange 52 is recessed inward to form a first arc groove 521, the first position-limiting post 56 is disposed in the first arc groove 521, the second position-limiting post 66 is formed on the grounding position-limiting plate 6, the outer edge of the grounding flange 62 is recessed inwards to form a second arc groove 621, the second limiting post 66 is arranged in the second arc groove 621, an isolating shaft sleeve 514 is fixedly arranged at one end of the isolating operation shaft 51, the isolating shaft sleeve 514 is connected to the middle plate 4, one side of the isolating shaft sleeve 514 close to the front plate 1 forms an isolating on-off indicating piece 515 which is integrally formed with the isolating shaft sleeve 514, a grounding shaft sleeve 614 is fixedly arranged at one end of the grounding operation shaft 61, the grounding shaft sleeve 614 is connected to the middle plate 4, the side of the grounding bushing 614 near the front plate 1 forms a grounding switch-on/off indicator 615 integrally formed with the grounding bushing 614. The first limiting column and the second limiting column are bolts fixed on the limiting plates.

As shown in fig. 3, 4, 5, 6, 9 and 10, travel switch mounting brackets (57 and 67) are fixedly mounted at the upper ends of the isolation limit plate 5 and the grounding limit plate 6, travel switches (571 and 671) are arranged on the travel switch mounting brackets (57 and 67), an isolation cam 516 is arranged on the isolation operation shaft 51, the isolation cam 516 rotates along with the isolation operation shaft 51 to form linkage fit with the travel switch 571 on the isolation limit plate 5, a grounding cam 616 is arranged on the grounding operation shaft 61, and the grounding cam 616 rotates along with the grounding operation shaft 61 to form linkage fit with the travel switch 671 on the grounding limit plate 6.

According to the above embodiment, as shown in fig. 11, the utility model discloses an application of operating device in ring main unit, the axle sleeve on the isolating switch passes through the isolating connection hole on the back plate to be connected with the isolating flat shaft of isolating operating shaft, the axle sleeve on the grounding switch passes through the grounding connection hole on the back plate to be connected with the grounding flat shaft of grounding operating shaft, when operating personnel operates isolating operating shaft or grounding operating shaft, the problem that isolating operating shaft or grounding operating shaft drops from the back plate can not occur, and the fixing mode of isolating operating shaft and grounding operating shaft makes it not to have axial displacement, greatly improving the reliability of operating device; the isolating flange and the grounding flange are respectively provided with a clamping point device, the balls are always pressed on respective limiting plates under the action of pressure springs on respective clamping point devices in the rotating process of the isolating operating shaft and the grounding operating shaft, when the isolating operating shaft is in an opening or closing state, the first balls can fall into corresponding first ball grooves, and when the grounding operating shaft is in an opening or closing state, the second balls can fall into corresponding second ball grooves, so that the operating shaft is prevented from rotating mistakenly when the cabinet body is impacted or shakes, and the use safety and stability of the operating mechanism are improved; the isolation opening and closing indicating piece and the grounding opening and closing indicating piece are respectively and directly connected to the isolation operating shaft and the grounding operating shaft, so that the isolation opening and closing indicating piece and the isolation operating shaft rotate coaxially, and the grounding opening and closing indicating piece and the grounding operating shaft rotate coaxially, so that the operating mechanism can accurately indicate the states of the isolation operating shaft and the grounding operating shaft; the isolating limiting plate and the grounding limiting plate are provided with travel switch mounting supports, and the travel switches can be directly in linkage fit with cams arranged on the operating shafts through rotation of the operating shafts, so that the complexity of the operating mechanism is greatly reduced, and meanwhile, assembly and wiring are facilitated.

In addition to the above embodiments, there are also other embodiments of the present invention, and those skilled in the art can make various corresponding changes and modifications according to the present invention without departing from the spirit and scope of the present invention, and these corresponding changes and modifications should fall within the protection scope of the appended claims.

Claims

1. The utility model provides an operating device for looped netowrk cabinet, includes front bezel, back plate, bottom plate, be provided with on the bottom plate and keep apart limiting plate and ground connection limiting plate, it has kept apart the operating axis to wear to put on the isolation limiting plate, wears to put on the ground connection limiting plate and has put the ground connection operating axis, the front bezel just forms respectively to the position of keeping apart operating axis and ground connection operating axis and keeps apart operating hole and ground connection operating hole, its characterized in that is being formed respectively to the position of keeping apart operating axis and ground connection operating axis to the back plate: still include the medium plate, the one end of keeping apart the operating axis is connected on the medium plate, and the other end of keeping apart the operating axis forms keeps apart the flat axle, keeps apart the flat axle just to keeping apart the connecting hole, keeps apart the both sides that are close to on the operating axis and keep apart the limiting plate and form first narrowing portion and first locating part respectively, is provided with the isolation flange that the operating axis turned angle was kept apart in the restriction on the first locating part, the one end of ground connection operating axis is connected on the medium plate, and the other end of ground connection operating axis forms ground connection flat axle, and ground connection flat axle just to ground connection connecting hole, and the both sides that are close to the ground connection limiting plate on the ground connection operating axis form second narrowing portion and second locating part respectively, are provided with the ground connection flange that limits ground connection operating axis turned angle on the second locating.

2. The operating mechanism for the ring main unit according to claim 1, wherein: be provided with first stuck point device on the isolation flange, first stuck point device is including fixing first hollow post on the isolation flange, connecting at the first cap of first hollow post one end, connecting at the first ball of the first hollow post other end, connecting in first hollow post and by first cap and the first pressure spring of first ball extruded, form a plurality of first ball grooves with first ball adaptation on the isolation limiting plate, first ball forms the linkage cooperation along with the rotation of isolation flange and first ball groove.

3. The operating mechanism for the ring main unit according to claim 1, wherein: the ground flange is provided with the second stuck point device, and the second stuck point device is including fixing the hollow post of second on the ground flange, connecting at the second cap of the hollow post one end of second, connecting at the second ball of the hollow post other end of second, connecting in the hollow post of second and by second cap and the extruded second pressure spring of second ball, form a plurality of second ball grooves with the adaptation of second ball on the ground limiting plate, the second ball forms the linkage cooperation with second ball groove along with the ground flange rotation.

4. The operating mechanism for the ring main unit according to claim 1, 2 or 3, wherein: the isolation flange is characterized in that a first limiting column is formed on the isolation limiting plate, a first arc groove is formed on the isolation flange, the first limiting column is arranged in the first arc groove, a second limiting column is formed on the grounding limiting plate, a second arc groove is formed on the grounding flange, and the second limiting column is arranged in the second arc groove.

5. The operating mechanism for the ring main unit according to claim 1, 2 or 3, wherein: the isolation operation shaft is fixedly provided with an isolation shaft sleeve at one end, the isolation shaft sleeve is connected to the middle plate, one side, close to the front plate, of the isolation shaft sleeve forms an isolation opening and closing indicating piece integrally formed with the isolation shaft sleeve, one end of the grounding operation shaft is fixedly provided with a grounding shaft sleeve, the grounding shaft sleeve is connected to the middle plate, and one side, close to the front plate, of the grounding shaft sleeve forms a grounding opening and closing indicating piece integrally formed with the grounding shaft sleeve.

6. The operating mechanism for the ring main unit according to claim 1, 2 or 3, wherein: the isolation device is characterized in that travel switch mounting supports are fixedly mounted at the upper ends of the isolation limiting plate and the ground limiting plate respectively, travel switches are arranged on the travel switch mounting supports, isolation cams are arranged on the isolation operating shafts, the isolation cams rotate along with the isolation operating shafts and form linkage fit with the travel switches on the isolation limiting plate, ground cams are arranged on the ground operating shafts and form linkage fit with the travel switches on the ground limiting plate along with the rotation of the ground operating shafts.

7. The operating mechanism for the ring main unit according to claim 1, 2 or 3, wherein: the middle plate, the bottom plate and the rear plate are integrally formed.

8. The operating mechanism for the ring main unit according to claim 1, 2 or 3, wherein: positioning columns are arranged between the isolation limiting plate and the rear plate and between the grounding limiting plate and the rear plate.