CN112908769B - Three-station manual isolation device of ring main unit and control method thereof - Google Patents
Three-station manual isolation device of ring main unit and control method thereof Download PDFInfo
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- CN112908769B CN112908769B CN202110103545.5A CN202110103545A CN112908769B CN 112908769 B CN112908769 B CN 112908769B CN 202110103545 A CN202110103545 A CN 202110103545A CN 112908769 B CN112908769 B CN 112908769B
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- isolation
- grounding
- assembly
- crank arm
- input shaft
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
- H01H31/08—Interlocking mechanisms for interlocking two or more parts of the mechanism for operating contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
- H01H5/04—Energy stored by deformation of elastic members
- H01H5/06—Energy stored by deformation of elastic members by compression or extension of coil springs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
Abstract
The invention discloses a three-station manual isolation device of a ring main unit and a control method thereof, wherein the device comprises: the limiting rod assembly is fixedly connected with the bracket assembly; the isolation crank arm assembly is sleeved on the isolation input shaft assembly, the isolation input shaft assembly drives the isolation crank arm assembly to rotate when rotating to a first preset position along the axial direction, and the isolation crank arm assembly abuts against the limiting rod assembly when rotating to a third preset position; the grounding crank arm assembly is sleeved on the grounding input shaft assembly, the grounding input shaft assembly drives the grounding crank arm assembly to rotate when rotating to a second preset position along the axial direction, and the grounding crank arm assembly abuts against the limiting rod assembly when rotating to a fourth preset position; the isolation crank arm component and the grounding crank arm component are respectively in transmission connection with the axe-shaped output shaft component; when the locking indication board rotates along with the axe-shaped output shaft assembly, the isolation input shaft assembly or the grounding input shaft assembly can be unlocked or locked respectively; and two ends of the energy storage spring are respectively connected with the isolation input shaft assembly and the grounding input shaft assembly.
Description
Technical Field
The invention relates to the field of power equipment manufacturing, in particular to a three-station manual isolation device of a ring main unit and a control method of the three-station manual isolation device.
Background
The 10kV totally-enclosed ring main unit is widely applied to a power grid and used for circuit protection and segmentation of a power system. The primary high-voltage element circuit breaker and the three-station isolating switch are sealed inside the metal air chamber, and the outside of the primary high-voltage element circuit breaker and the three-station isolating switch can be used for switching on, switching off and grounding a main circuit through the matched circuit breaker mechanism and the matched three-station isolating mechanism, so that external power supply output, disconnection and grounding are realized. The three-position isolating switch and the isolating mechanism thereof are used as one of important components in the network ring cabinet equipment, the reliability of the functions of the three-position isolating switch is extremely important for the reliable power supply of a loop and the safety of the overhaul and maintenance of the loop, and the three-position isolating switch and the isolating mechanism thereof are the safety guarantee of related operators.
The three-station manual isolating mechanism matched with the existing isolating switch mainly has the following defects: firstly, the structure is complex, the number of parts is large and small, and the deformation is easy to generate due to insufficient mechanism strength during operation; secondly, the whole volume is large, the installation space is limited, and the installation, the adjustment and the maintenance are not facilitated; thirdly, locking and indicating are carried out through multi-stage transmission, the structure is complex, and the position is inaccurate; and fourthly, when the mechanism is at the opening position, the opening limit keeping structure is complex, and large abrasion is easy to generate during frequent operation.
Disclosure of Invention
The embodiment of the invention aims to provide a three-station manual isolation device of a ring main unit and a control method thereof, which are arranged in a symmetrical layout mode, so that the structural complexity of the device is simplified, the service life and the reliability of the device are improved, the occupied space is reduced, and the cost of the device is reduced.
In order to solve the above technical problem, a first aspect of the embodiments of the present invention provides a three-station manual isolation device for a ring main unit, including: the device comprises a bracket assembly, an isolation input shaft assembly, an isolation crank arm assembly, a grounding input shaft assembly, a grounding crank arm assembly, an axe-shaped output shaft assembly, a limit rod assembly, an energy storage spring and a locking indication board;
the limiting rod assembly is fixedly connected with the bracket assembly;
the isolation crank arm assembly is sleeved on the isolation input shaft assembly, the isolation input shaft assembly drives the isolation crank arm assembly to rotate when rotating to a first preset position along the axial direction, and the isolation crank arm assembly abuts against the limiting rod assembly when rotating to a third preset position;
the grounding crank arm assembly is sleeved on the grounding input shaft assembly, the grounding input shaft assembly drives the grounding crank arm assembly to rotate when rotating to a second preset position along the axial direction, and the grounding crank arm assembly abuts against the limiting rod assembly when rotating to a fourth preset position;
the isolation crank arm assembly and the grounding crank arm assembly are in transmission connection with the axe-shaped output shaft assembly respectively;
the locking indication board is fixedly connected with one end, far away from the energy storage spring, of the axe-shaped output shaft assembly, and can respectively unlock or lock the isolation input shaft assembly or the grounding input shaft assembly when rotating along with the axe-shaped output shaft assembly;
and two ends of the energy storage spring are respectively connected with the isolation input shaft assembly and the grounding input shaft assembly.
Further, the isolated input shaft assembly comprises: the isolation input shaft, the isolation shaft end crank arm and the isolation coupling shaft are fixedly connected or integrally formed;
one end of the isolation input shaft is connected with the isolation shaft end crank arm;
the isolation linkage shaft penetrates through the isolation shaft end connecting lever and is parallel to the isolation input shaft;
one end of the isolation linkage shaft is connected with the energy storage spring, and the other end of the isolation linkage shaft is abutted to the isolation crank arm assembly when the isolation input shaft rotates.
Further, the grounded input shaft assembly comprises: the grounding input shaft, the grounding shaft end crank arm and the grounding linkage shaft are fixedly connected or integrally formed;
one end of the grounding input shaft is connected with the grounding shaft end crank arm;
the grounding linkage shaft penetrates through the grounding shaft end connecting lever and is parallel to the grounding input shaft;
one end of the grounding linkage shaft is connected with the energy storage spring, and the other end of the grounding linkage shaft is abutted to the grounding crank arm assembly when the grounding input shaft rotates.
Further, the bracket assembly includes: the bracket front plate, the bracket middle plate and the bracket rear plate are sequentially arranged in parallel;
the limiting rod assembly, the isolating crank arm assembly and the grounding crank arm assembly are positioned between the bracket front plate and the bracket middle plate;
the isolation input shaft assembly and the grounding input shaft assembly respectively penetrate through the bracket front plate and the bracket middle plate;
the axe-shaped output shaft assembly penetrates through the bracket front plate, the bracket middle plate and the bracket rear plate;
the energy storage spring is positioned between the bracket middle plate and the bracket rear plate;
the locking indication plate is positioned on one side, away from the support middle plate, of the support front plate.
Further, the bracket front plate and the bracket middle plate are connected through a plurality of fixing rods;
the support middle plate and the support rear plate are connected through a plurality of fixing rods.
Further, the isolating crank arm assembly includes: the isolation linkage crank arm, the isolation crank arm shaft sleeve and the isolation crank arm shaft are arranged on the connecting rod;
the isolation linkage crank arm is of a planar sheet structure and is sleeved on the isolation input shaft assembly through the isolation crank arm shaft sleeve;
the isolation crank arm shaft is fixedly arranged on one side of the isolation linkage crank arm;
the axe-shaped output shaft assembly is provided with an isolation linkage gap corresponding to the isolation crank arm shaft.
Furthermore, an isolation needle bearing and an isolation bearing clamp are arranged on the isolation crank arm shaft.
Further, the ground engaging crank arm assembly comprises: the grounding linkage crank arm, the grounding crank arm shaft sleeve and the grounding crank arm shaft are arranged on the base;
the grounding linkage crank arm is of a planar sheet structure and is sleeved on the grounding input shaft assembly through the grounding crank arm shaft sleeve;
the grounding crank arm shaft is fixedly arranged on one side of the grounding linkage crank arm;
the axe-shaped output shaft assembly is provided with a grounding linkage gap corresponding to the grounding crank arm shaft.
Furthermore, a grounding needle bearing and a grounding bearing clamp are arranged on the grounding crank arm shaft.
Further, the hatchet output shaft assembly includes: an axe-shaped turntable and an output main shaft;
the axe-shaped turntable is of a sheet structure, and an isolation linkage notch and a grounding linkage notch are arranged at the edge of the axe-shaped turntable;
the axe-shaped turntable is rotationally connected with the isolation crank arm assembly through the isolation linkage gap and is rotationally connected with the grounding crank arm assembly through the grounding linkage gap;
the output main shaft vertically penetrates through the axe-shaped turntable;
the locking indication plate is fixedly connected with one end, far away from the energy storage spring, of the output main shaft.
Furthermore, the energy storage spring is in a long hook structure, and two ends of the energy storage spring are respectively connected with the isolation input shaft assembly and the grounding input shaft assembly in a rotating mode.
Correspondingly, a second aspect of the embodiments of the present invention provides a method for controlling a ring main unit three-position manual isolation device, which is used for controlling any one of the above ring main unit three-position manual isolation devices, and includes the following steps:
controlling the isolation input shaft assembly to rotate anticlockwise to pull the energy storage spring;
when the energy storage spring passes through the middle, the energy storage spring is freely released, and the isolation input shaft assembly drives the isolation crank arm assembly to rotate anticlockwise so as to drive the axe-shaped output shaft assembly to rotate clockwise;
when the isolation crank arm assembly rotates anticlockwise to the limiting rod, the switch is switched on in place, the locking indication board is driven to rotate clockwise, the operation end of the grounding input shaft assembly is shielded by the lock, and the switch-on state indication is completed.
Correspondingly, a third aspect of the embodiments of the present invention provides a method for controlling a ring main unit three-station manual isolation device, for controlling any one of the above ring main unit three-station manual isolation devices, including the following steps:
controlling the isolation input shaft assembly to rotate clockwise to pull the energy storage spring;
when the energy storage spring passes through the middle, the energy storage spring is freely released, and the isolation input shaft assembly drives the isolation crank arm assembly to rotate clockwise so as to drive the axe-shaped output shaft assembly to rotate anticlockwise;
when the isolating crank arm assembly rotates clockwise to the limiting rod assembly, the brake is in place, the locking indicator rotates anticlockwise, the operation end of the grounding input shaft assembly is unlocked and avoided, and the brake separating state indication is completed.
Correspondingly, a fourth aspect of the embodiments of the present invention provides a method for controlling a ring main unit three-station manual isolation device, which is used for controlling any one of the above ring main unit three-station manual isolation devices, and includes the following steps:
controlling the grounding input shaft assembly to rotate clockwise to pull the energy storage spring;
when the energy storage spring passes through the middle, the energy storage spring is freely released, and the grounding input shaft assembly drives the grounding crank arm assembly to rotate clockwise so as to link the axe-shaped output shaft assembly to rotate anticlockwise;
when the grounding crank arm assembly rotates clockwise to the limiting rod assembly, the grounding is in place, meanwhile, the locking indication board rotates anticlockwise, the operation end of the isolation input shaft assembly is shielded by locking, and the grounding state indication is completed.
Correspondingly, a fifth aspect of the embodiments of the present invention provides a method for controlling a ring main unit three-position manual isolation device, which is used for controlling any one of the above ring main unit three-position manual isolation devices, and includes the following steps:
controlling the grounding input shaft assembly to rotate anticlockwise and pulling the energy storage spring;
when the energy storage spring passes through the middle, the energy storage spring is freely released, and the grounding input shaft assembly drives the grounding crank arm assembly to rotate anticlockwise so as to drive the axe-shaped output shaft assembly to rotate clockwise;
when the grounding crank arm assembly rotates anticlockwise to the limiting rod assembly, the brake is in place, meanwhile, the locking indication board rotates clockwise, the unlocking is carried out, the operation end of the isolation input shaft assembly is avoided, and the brake separating state indication is completed.
The technical scheme of the embodiment of the invention has the following beneficial technical effects:
by adopting the symmetrical layout arrangement, the structural complexity of the device is simplified, the service life and the reliability of the device are improved, the occupied space is reduced, and the cost of the device is reduced.
Drawings
Fig. 1 is a front view of a three-station manual isolating device of a ring main unit according to an embodiment of the present invention;
fig. 2 is a top view of a three-position manual isolation device of a ring main unit according to an embodiment of the present invention;
fig. 3 is a perspective view of a three-position manual isolating device of a ring main unit according to an embodiment of the present invention;
fig. 4 is a schematic view of a ring main unit three-station manual isolation device without a bracket according to an embodiment of the present invention;
fig. 5 is a schematic view of a ring main unit three-station manual isolation device without a bracket according to an embodiment of the present invention.
Reference numerals:
1. the device comprises a bracket component, 11, a bracket front plate, 12, a bracket middle plate, 13, a bracket rear plate, 14, a fixing rod, 2, an isolation input shaft component, 21, an isolation input shaft, 22, an isolation shaft end connecting lever, 23, an isolation connecting lever, 231, a copper sleeve, 3, an isolation connecting lever component, 31, an isolation connecting lever, 32, an isolation connecting lever shaft sleeve, 33, an isolation connecting lever shaft, 4, a grounding input shaft component, 41, a grounding input shaft, 42, a grounding shaft end connecting lever, 43, a grounding connecting lever, 5, a grounding connecting lever component, 51, a grounding connecting lever, 52, a grounding connecting lever shaft sleeve, 6, an axe-shaped output shaft component, 61, an axe-shaped rotary disc, 611, an isolation connecting gap, 612, a grounding connecting gap, 62, an output main shaft, 7, a limiting rod component, 8, an energy storage spring, 9 and a locking indicator.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Fig. 1 is a front view of a three-station manual isolating device of a ring main unit according to an embodiment of the present invention.
Fig. 2 is a top view of a three-position manual isolation device of a ring main unit according to an embodiment of the present invention.
Fig. 3 is a perspective view of a three-position manual isolating device of a ring main unit according to an embodiment of the present invention.
Fig. 4 is a schematic view of a ring main unit three-station manual isolation device without a bracket according to an embodiment of the present invention.
Fig. 5 is a schematic view of a ring main unit three-station manual isolation device without a bracket according to an embodiment of the present invention.
Referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, a first aspect of the embodiment of the present invention provides a three-station manual isolation device for a ring main unit, including: the device comprises a bracket assembly 1, an isolation input shaft assembly 2, an isolation crank arm assembly 3, a grounding input shaft assembly 4, a grounding crank arm assembly 5, an axe-shaped output shaft assembly 6, a limiting rod assembly 7, an energy storage spring 8 and a locking indication board 9; the limiting rod assembly 7 is fixedly connected with the bracket assembly 1; the isolation crank arm assembly 3 is sleeved on the isolation input shaft assembly 2, the isolation input shaft assembly 2 drives the isolation crank arm assembly 3 to rotate when rotating to a first preset position along the axial direction, and the isolation crank arm assembly 3 abuts against the limiting rod assembly 7 when rotating to a third preset position; the grounding crank arm assembly 5 is sleeved on the grounding input shaft assembly 4, the grounding input shaft assembly 4 drives the grounding crank arm assembly 5 to rotate when axially rotating to a second preset position, and the grounding crank arm assembly 5 abuts against the limiting rod assembly 7 when axially rotating to a fourth preset position; the isolation crank arm component 3 and the grounding crank arm component 5 are respectively in transmission connection with an axe-shaped output shaft component 6; the locking indication plate 9 and one end of the axe-shaped output shaft assembly 6, which is far away from the energy storage spring 8, can respectively unlock or lock the isolated input shaft assembly 2 or the grounding input shaft assembly 4 when rotating along with the axe-shaped output shaft assembly 6; two ends of the energy storage spring 8 are respectively connected with the isolation input shaft assembly 2 and the grounding input shaft assembly 4.
Among the above-mentioned technical scheme, separating brake limit structure is simple, reliable, and when separating brake position, isolation connecting lever subassembly 3, ground connection connecting lever subassembly 5 and axe shape output shaft subassembly form the auto-lock separating brake position at the output side and keep, when isolation input side or ground connection input side carry out combined floodgate or ground connection operation, only when the energy storage pressure spring is through the well release after, can accomplish the unblock and accomplish relevant action.
Specifically, the isolating input shaft assembly 2 includes: the isolation input shaft 21, the isolation shaft end crank arm 22 and the isolation linkage shaft 23 are fixedly connected or integrally formed; one end of the isolating input shaft 21 is connected with an isolating shaft end crank arm 22; the isolation interlocking shaft 23 penetrates through the isolation shaft end connecting lever 22 and is parallel to the isolation input shaft 21; one end of the isolating linkage shaft 23 is connected with the energy storage spring 8, and the other end of the isolating linkage shaft abuts against the isolating crank arm assembly 3 when the isolating input shaft 21 rotates.
Optionally, the isolation input shaft assembly 2 is formed by integral precision casting, the isolation linkage shaft 23 of the isolation input shaft assembly is provided with an alloy wear-resistant copper sleeve 231 with a limiting groove and a limiting bearing clamp, and the front end of the isolation input shaft 21 is hexagonal and is matched with an operating handle for use.
Specifically, the grounded input shaft assembly 4 includes: a grounding input shaft 41, a grounding shaft end crank arm 42 and a grounding linkage shaft 43 which are fixedly connected or integrally formed; one end of the grounding input shaft 41 is connected with a grounding shaft end crank arm 42; the grounding linkage shaft 43 penetrates through the grounding shaft end crank arm 42 and is parallel to the grounding input shaft 41; one end of the grounding linkage shaft 43 is connected with the energy storage spring 8, and the other end thereof is abutted against the grounding crank arm assembly 5 when the grounding input shaft 41 rotates.
Optionally, the grounding input shaft assembly 4 is formed by integral precision casting, the grounding linkage shaft 43 of the grounding input shaft assembly is provided with an alloy wear-resistant copper sleeve 231 with a limiting groove and a limiting bearing clamp, and the front end of the grounding input shaft 41 is hexagonal and is matched with an operating handle for use.
Specifically, the bracket assembly 1 includes: the bracket front plate 11, the bracket middle plate 12 and the bracket rear plate 13 are arranged in parallel in sequence; the limiting rod assembly 7, the isolating crank arm assembly 3 and the grounding crank arm assembly 5 are positioned between the support front plate 11 and the support middle plate 12; the isolating input shaft assembly 2 and the grounding input shaft assembly 4 respectively penetrate through the bracket front plate 11 and the bracket middle plate 12 through bearings, and the axe-shaped output shaft assembly 6 penetrates through the bracket front plate 11, the bracket middle plate 12 and the bracket rear plate 13 through bearings; the energy storage spring 8 is positioned between the bracket middle plate 12 and the bracket rear plate 13; and a locking indication plate 9 is arranged on one side of the bracket front plate 11 far away from the bracket middle plate 12.
Further, the bracket front plate 11 and the bracket middle plate 12 are connected through a plurality of fixing rods 14; the rack middle plate 12 and the rack rear plate 13 are connected by a plurality of fixing rods 14.
Specifically, the isolating crank arm assembly 3 includes: the isolation connecting lever 31, the isolation connecting lever shaft sleeve 32 and the isolation connecting lever shaft 33 are integrally formed by precision casting; the isolation linkage crank arm 31 is a plane sheet structure and is sleeved on the isolation input shaft assembly 2 through an isolation crank arm shaft sleeve 32; the isolation crank arm shaft 33 is fixedly arranged at one side of the isolation linkage crank arm 31; the axe-shaped output shaft assembly 6 is provided with an isolation interlock notch 611 corresponding to the isolation crank arm shaft 33.
Preferably, the isolating crank arm shaft 33 is provided with an isolating needle bearing and an isolating bearing clamp. The isolating needle roller bearing of the isolating crank arm assembly 3 rolls in the isolating linkage notch 611 of the axe-shaped output shaft assembly, so that the flexibility, the reliability and the service life of the device are improved.
Optionally, the isolation interlock notch 611 is of a U-shaped structure.
Specifically, the ground connecting crank arm assembly 5 includes: the grounding linkage crank arm 51, the grounding crank arm shaft sleeve 52 and the grounding crank arm shaft are integrally formed by precision casting; the grounding linkage crank arm 51 is a planar sheet structure and is sleeved on the grounding input shaft assembly 4 through a grounding crank arm shaft sleeve 52; the grounding crank arm shaft is fixedly arranged on one side of the grounding linkage crank arm 51; the axe-shaped output shaft component 6 is provided with a grounding linkage notch 612 corresponding to the grounding crank arm shaft.
Preferably, the grounding crank arm shaft is provided with a grounding needle bearing and a grounding bearing clamp. The grounding needle roller bearing assembled on the grounding crank arm assembly 5 rolls in the grounding linkage notch 612 of the axe-shaped output shaft assembly, so that the flexibility and reliability of the device action are improved, and the service life of the device is prolonged.
Optionally, the ground linking notch 612 has a U-shaped structure.
In particular, the hatchet-shaped output shaft assembly 6 comprises: an axe-shaped turntable 61 and an output main shaft 62 which are fixedly connected; the axe-shaped turntable 61 is of a sheet structure, and the edge of the axe-shaped turntable 61 is provided with an isolation linkage notch 611 and a grounding linkage notch 612; the axe-shaped turntable 61 is rotatably connected with the isolation crank arm component 3 through an isolation linkage notch 611 and is rotatably connected with the grounding crank arm component 5 through a grounding linkage notch 612; the output main shaft 62 vertically penetrates through the axe-shaped turntable 61; a lockout indicator 9 is fixedly attached to the end of the hatchet output shaft assembly 6 facing the isolated input shaft assembly 2.
Optionally, the axe-shaped turntable is welded to the output main shaft 62, and two ends of the output main shaft 62 are both square.
The axe-shaped output shaft assembly 6 is directly connected with the locking indication board 9, the structure is simple, and the accuracy of locking and mechanism position indication is guaranteed.
Specifically, energy storage spring 8 is long couple structure, and its both ends respectively with keep apart input shaft subassembly 2 and ground connection input shaft subassembly 4 fixed connection.
Alternatively, the locking indicators 9 are formed using a plastic mold.
Correspondingly, a second aspect of the embodiments of the present invention provides a method for controlling a three-position manual isolation device of a ring main unit, which is used for controlling the three-position manual isolation device of the ring main unit, and includes the following steps:
s110, controlling the isolation input shaft assembly 2 to rotate anticlockwise, and pulling the energy storage spring 8;
s120, after the energy storage spring 8 passes through the middle, the energy storage spring is freely released, the isolation input shaft assembly 2 drives the isolation crank arm assembly 3 to rotate anticlockwise, and the isolation linkage shaft 23 moves in the isolation linkage notch 611 of the axe-shaped output shaft assembly 6, so that the axe-shaped output shaft assembly is driven to rotate clockwise;
and S130, when the isolating crank arm assembly 3 rotates anticlockwise to the limiting rod, the switch is switched on in place, meanwhile, the locking indication board 9 is driven to rotate clockwise, the operation end of the grounding input shaft assembly 4 is blocked, and the switch-on state indication is completed.
Correspondingly, a third aspect of the embodiments of the present invention provides a method for controlling a three-position manual isolation device of a ring main unit, which is used for controlling the three-position manual isolation device of the ring main unit, and includes the following steps:
and S210, controlling the isolation input shaft assembly 2 to rotate clockwise, and pulling the energy storage spring 8.
And S220, after the energy storage spring 8 passes through the middle, the energy storage spring is freely released, the isolation input shaft assembly 2 drives the isolation crank arm assembly 3 to rotate clockwise, and the isolation linkage shaft 23 moves in the isolation linkage notch 611 of the axe-shaped output shaft assembly 6, so that the axe-shaped output shaft assembly is driven to rotate anticlockwise.
And S230, when the isolating crank arm assembly 3 rotates clockwise to the limiting rod assembly 7, the brake is switched off in place, meanwhile, the locking indication board 9 rotates anticlockwise, the operation end of the avoidance grounding input shaft assembly 4 is unlocked, and the brake switching-off state indication is completed.
Correspondingly, a fourth aspect of the embodiments of the present invention provides a method for controlling a three-station manual isolation device of a ring main unit, which is used for controlling the three-station manual isolation device of the ring main unit, and includes the following steps:
and S310, controlling the grounding input shaft assembly 4 to rotate clockwise, and pulling the energy storage spring 8.
And S320, after the energy storage spring 8 passes through the middle, the energy storage spring is freely released, the grounding input shaft assembly 4 drives the grounding crank arm assembly 5 to rotate clockwise, the grounding linkage shaft 43 moves in the grounding linkage notch 612 of the axe-shaped output shaft assembly 6, and then the axe-shaped output shaft assembly is linked to rotate anticlockwise.
S330, when the grounding crank arm assembly 5 rotates clockwise to the limiting rod assembly 7, the grounding is in place, meanwhile, the locking indication board 9 rotates anticlockwise, the locking shielding isolation input shaft assembly 2 is arranged at the operation end, and the grounding state indication is completed.
Correspondingly, a fifth aspect of the embodiment of the present invention provides a method for controlling a three-station manual isolation device of a ring main unit, which is used for controlling the three-station manual isolation device of the ring main unit, and includes the following steps:
and S410, controlling the grounding input shaft assembly 4 to rotate anticlockwise, and pulling the energy storage spring 8.
And S420, after the energy storage spring 8 passes through the middle, the energy storage spring is freely released, the grounding input shaft assembly 4 drives the grounding crank arm assembly 5 to rotate anticlockwise, the grounding linkage shaft 43 moves in the grounding linkage notch 612 of the axe-shaped output shaft assembly 6, and then the axe-shaped output shaft assembly is linked to rotate clockwise.
And S430, when the grounding crank arm assembly 5 rotates anticlockwise to the limiting rod assembly 7, the brake is switched off in place, meanwhile, the locking indication board 9 rotates clockwise, the operation end of the avoidance isolation input shaft assembly 2 is unlocked, and the brake switching-off state indication is completed.
The embodiment of the invention aims to protect a three-station manual isolation device of a ring main unit and a control method thereof, wherein the three-station manual isolation device of the ring main unit comprises: the device comprises a bracket assembly, an isolation input shaft assembly, an isolation crank arm assembly, a grounding input shaft assembly, a grounding crank arm assembly, an axe-shaped output shaft assembly, a limit rod assembly, an energy storage spring and a locking indication board; the limiting rod assembly is fixedly connected with the bracket assembly; the isolation crank arm assembly is sleeved on the isolation input shaft assembly, the isolation input shaft assembly drives the isolation crank arm assembly to rotate when rotating to a first preset position along the axial direction, and the isolation crank arm assembly abuts against the limiting rod assembly when rotating to a third preset position; the grounding crank arm assembly is sleeved on the grounding input shaft assembly, the grounding input shaft assembly drives the grounding crank arm assembly to rotate when axially rotating to a second preset position, and the grounding crank arm assembly abuts against the limiting rod assembly when rotating to a fourth preset position; the isolation crank arm assembly and the grounding crank arm assembly are respectively in transmission connection with the axe-shaped output shaft assembly; the locking indication plate is fixedly connected with one end of the axe-shaped output shaft assembly, which is far away from the energy storage spring, and can respectively unlock or lock the isolated input shaft assembly or the grounding input shaft assembly when rotating along with the axe-shaped output shaft assembly; and two ends of the energy storage spring are respectively connected with the isolation input shaft assembly and the grounding input shaft assembly. The technical scheme has the following effects:
by adopting the symmetrical layout arrangement, the structural complexity of the device is simplified, the service life and the reliability of the device are improved, the occupied space is reduced, and the cost of the device is reduced.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (14)
1. The utility model provides a manual isolating device of three stations of looped netowrk cabinet, its characterized in that includes: the device comprises a support assembly (1), an isolation input shaft assembly (2), an isolation crank arm assembly (3), a grounding input shaft assembly (4), a grounding crank arm assembly (5), an axe-shaped output shaft assembly (6), a limiting rod assembly (7), an energy storage spring (8) and a locking indicator (9);
the limiting rod assembly (7) is fixedly connected with the bracket assembly (1);
the isolation crank arm assembly (3) is sleeved on the isolation input shaft assembly (2), the isolation input shaft assembly (2) drives the isolation crank arm assembly (3) to rotate when rotating to a first preset position along the axial direction, and the isolation crank arm assembly abuts against the limiting rod assembly (7) when rotating to a third preset position;
the grounding crank arm assembly (5) is sleeved on the grounding input shaft assembly (4), the grounding input shaft assembly (4) drives the grounding crank arm assembly (5) to rotate when rotating to a second preset position along the axial direction, and the grounding crank arm assembly abuts against the limiting rod assembly (7) when rotating to a fourth preset position;
the isolation crank arm assembly (3) and the grounding crank arm assembly (5) are in transmission connection with the axe-shaped output shaft assembly (6) respectively;
the locking indication board (9) is fixedly connected with one end, far away from the energy storage spring (8), of the axe-shaped output shaft assembly (6), and can respectively unlock or lock the isolating input shaft assembly (2) or the grounding input shaft assembly (4) when rotating along with the axe-shaped output shaft assembly (6);
two ends of the energy storage spring (8) are respectively connected with the isolation input shaft assembly (2) and the grounding input shaft assembly (4);
the hatchet-shaped output shaft assembly (6) comprises: an axe-shaped turntable (61) and an output main shaft (62);
the axe-shaped turntable (61) is of a sheet-shaped structure, and an isolation linkage notch (611) and a grounding linkage notch (612) are arranged at the edge of the axe-shaped turntable (61);
the axe-shaped turntable (61) is rotationally connected with the isolation crank arm component (3) through the isolation linkage notch (611) and is rotationally connected with the grounding crank arm component (5) through the grounding linkage notch (612);
the output main shaft (62) vertically penetrates through the axe-shaped turntable (61);
and the locking indication plate (9) is fixedly connected with one end of the output main shaft (62) far away from the energy storage spring (8).
2. The ring main unit three-station manual isolation device as claimed in claim 1,
the isolated input shaft assembly (2) comprises: the isolation input shaft (21), the isolation shaft end crank arm (22) and the isolation interlocking shaft (23) are fixedly connected or integrally formed;
the isolation linkage shaft (23) penetrates through the isolation shaft end crank arm (22) and is parallel to the isolation input shaft (21);
one end of the isolation linkage shaft (23) is connected with the energy storage spring (8), and the other end of the isolation linkage shaft is abutted against the isolation crank arm assembly (3) when the isolation input shaft (21) rotates.
3. The ring main unit three-station manual isolation device as claimed in claim 1,
the grounded input shaft assembly (4) comprises: the grounding input shaft (41), the grounding shaft end crank arm (42) and the grounding linkage shaft (43) are fixedly connected or integrally formed;
the grounding linkage shaft (43) penetrates through the grounding shaft end crank arm (42) and is parallel to the grounding input shaft (41);
one end of the grounding linkage shaft (43) is connected with the energy storage spring (8), and the other end of the grounding linkage shaft is abutted against the grounding crank arm assembly (5) when the grounding input shaft (41) rotates.
4. The ring main unit three-station manual isolation device as claimed in claim 1,
the bracket assembly (1) comprises: the bracket front plate (11), the bracket middle plate (12) and the bracket rear plate (13) are sequentially arranged in parallel;
the limiting rod assembly (7), the isolating crank arm assembly (3) and the grounding crank arm assembly (5) are positioned between the support front plate (11) and the support middle plate (12);
the isolation input shaft assembly (2) and the grounding input shaft assembly (4) respectively penetrate through the support front plate (11) and the support middle plate (12);
the axe-shaped output shaft assembly (6) penetrates through the bracket front plate (11), the bracket middle plate (12) and the bracket rear plate (13);
the energy storage spring (8) is positioned between the support middle plate (12) and the support rear plate (13);
the locking indication plate (9) is positioned on one side, away from the support middle plate (12), of the support front plate (11).
5. The ring main unit three-station manual isolation device as claimed in claim 4,
the bracket front plate (11) is connected with the bracket middle plate (12) through a plurality of fixing rods (14);
the support middle plate (12) and the support rear plate (13) are connected through a plurality of fixing rods (14).
6. The ring main unit three-station manual isolation device as claimed in claim 1,
the isolating crank arm assembly (3) comprises: an isolation linkage crank arm (31), an isolation crank arm shaft sleeve (32) and an isolation crank arm shaft (33);
the isolation linkage crank arm (31) is of a plane sheet structure and is sleeved on the isolation input shaft assembly (2) through an isolation crank arm shaft sleeve (32);
the isolation crank arm shaft (33) is fixedly arranged on one side of the isolation linkage crank arm (31);
the axe-shaped output shaft assembly (6) is provided with an isolation linkage gap (611) corresponding to the isolation crank arm shaft (33).
7. The ring main unit three-station manual isolation device as claimed in claim 6,
an isolation needle bearing and an isolation bearing clamp are arranged on the isolation crank arm shaft (33).
8. The ring main unit three-station manual isolation device as claimed in claim 1,
the ground engaging crank arm assembly (5) comprises: a grounding linkage crank arm (51), a grounding crank arm shaft sleeve (52) and a grounding crank arm shaft;
the grounding linkage crank arm (51) is of a planar sheet structure and is sleeved on the grounding input shaft assembly (4) through the grounding crank arm shaft sleeve (52);
the grounding crank arm shaft is fixedly arranged on one side of the grounding linkage crank arm (51);
the axe-shaped output shaft assembly (6) is provided with a grounding linkage notch (612) corresponding to the grounding crank arm shaft.
9. The ring main unit three-station manual isolation device as claimed in claim 8,
and a grounding needle bearing and a grounding bearing clamp are arranged on the grounding crank arm shaft.
10. The ring main unit three-station manual isolation device as claimed in claim 1,
energy storage spring (8) are long couple structure, its both ends respectively with keep apart input shaft subassembly (2) with ground connection input shaft subassembly (4) rotate to be connected.
11. A control method of a three-station manual isolation device of a ring main unit is used for controlling the three-station manual isolation device of the ring main unit as claimed in any one of claims 1 to 10, and comprises the following steps:
controlling the isolation input shaft assembly (2) to rotate anticlockwise to pull the energy storage spring (8);
when the energy storage spring (8) passes through the middle, the energy storage spring is freely released, the isolation input shaft assembly (2) drives the isolation crank arm assembly (3) to rotate anticlockwise, and then the axe-shaped output shaft assembly (6) is driven to rotate clockwise;
when the isolating crank arm assembly (3) rotates anticlockwise to the limiting rod, the switch is switched on in place, the locking indication plate (9) is driven to rotate clockwise, the operation end of the grounding input shaft assembly (4) is shielded by locking, and the switch-on state indication is completed.
12. A control method of a three-station manual isolation device of a ring main unit is used for controlling the three-station manual isolation device of the ring main unit as claimed in any one of claims 1 to 10, and comprises the following steps:
controlling the isolation input shaft assembly (2) to rotate clockwise to pull the energy storage spring (8);
when the energy storage spring (8) passes through the middle, the energy storage spring is freely released, the isolation input shaft assembly (2) drives the isolation crank arm assembly (3) to rotate clockwise, and then the axe-shaped output shaft assembly (6) is driven to rotate anticlockwise;
when the isolating crank arm assembly (3) rotates clockwise to the limiting rod assembly (7), the brake is in place, meanwhile, the locking indication board (9) rotates anticlockwise, the operation end of the avoiding grounding input shaft assembly (4) is unlocked, and the brake-separating state indication is completed.
13. A control method of a three-station manual isolation device of a ring main unit is used for controlling the three-station manual isolation device of the ring main unit as claimed in any one of claims 1 to 10, and comprises the following steps:
controlling the grounding input shaft assembly (4) to rotate clockwise to pull the energy storage spring (8);
when the energy storage spring (8) passes through the middle, the energy storage spring is freely released, and the grounding input shaft assembly (4) drives the grounding crank arm assembly (5) to rotate clockwise, so that the axe-shaped output shaft assembly (6) is linked to rotate anticlockwise;
when ground connection turning arm subassembly (5) ground connection when clockwise rotation to spacing pole subassembly (7) target in place, simultaneously shutting sign (9) anticlockwise rotation, the shutting shelters from the operation end of isolation input shaft subassembly (2) to accomplish the ground connection state and instruct.
14. A control method of a three-station manual isolation device of a ring main unit is used for controlling the three-station manual isolation device of the ring main unit as claimed in any one of claims 1 to 10, and comprises the following steps:
controlling the grounding input shaft assembly (4) to rotate anticlockwise to pull the energy storage spring (8);
when the energy storage spring (8) passes through the middle, the energy storage spring is freely released, and the grounding input shaft assembly (4) drives the grounding crank arm assembly (5) to rotate anticlockwise so as to link the axe-shaped output shaft assembly (6) to rotate clockwise;
when the grounding crank arm assembly (5) rotates anticlockwise to the limiting rod assembly (7), the brake is in place, meanwhile, the locking indication board (9) rotates clockwise, the unlocking is carried out, the operation end of the isolation input shaft assembly (2) is avoided, and the brake-separating state indication is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110103545.5A CN112908769B (en) | 2021-01-26 | 2021-01-26 | Three-station manual isolation device of ring main unit and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110103545.5A CN112908769B (en) | 2021-01-26 | 2021-01-26 | Three-station manual isolation device of ring main unit and control method thereof |
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| Publication Number | Publication Date |
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| CN112908769A CN112908769A (en) | 2021-06-04 |
| CN112908769B true CN112908769B (en) | 2022-06-03 |
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| CN114400160B (en) * | 2021-12-16 | 2024-04-02 | 北京聚能达电力技术有限公司 | Direct-acting isolation mechanism |
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| CN103871773B (en) * | 2014-03-25 | 2016-04-13 | 厦门凯能电力科技有限公司 | Three station operating mechanisms |
| CN110323096A (en) * | 2019-07-08 | 2019-10-11 | 亚洲电力设备(深圳)股份有限公司 | A kind of three station isolated operation mechanism of ring network cabinet |
| CN215452110U (en) * | 2021-01-26 | 2022-01-07 | 北京清畅电力技术股份有限公司 | Three-station manual isolating device of ring main unit |
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