CN112509887B - Single-shaft manual operation return forward device for composite isolation circuit breaker - Google Patents
Single-shaft manual operation return forward device for composite isolation circuit breaker Download PDFInfo
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- CN112509887B CN112509887B CN202011294224.XA CN202011294224A CN112509887B CN 112509887 B CN112509887 B CN 112509887B CN 202011294224 A CN202011294224 A CN 202011294224A CN 112509887 B CN112509887 B CN 112509887B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
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Abstract
The invention discloses a single-shaft manual operation return forward device for a composite isolation circuit breaker, which comprises: the single-shaft bidirectional return ratchet wheel assembly, the isolating switch opening and closing assembly, the isolating shaft, the breaker opening and closing assembly, the breaker shaft and the frame; the single-shaft bidirectional return ratchet assembly is rotationally connected with the frame, drives the isolating shaft to rotate through the isolating switch opening and closing assembly, drives the breaker shaft to rotate through the breaker opening and closing assembly, can rotate a preset angle in a clockwise direction or a counterclockwise direction under the drive of external force, and can automatically return to an initial position after the external force disappears; when the single-shaft bidirectional return ratchet wheel assembly rotates, the isolating shaft and/or the breaker shaft are/is driven to rotate, so that the opening and closing operation of the isolating switch and/or the breaker is realized. The single-shaft manual operation is adopted to realize the opening and closing operation of the breaker and the isolating switch in a sectionalized manner according to a given sequence at the same time, so that the operation convenience is improved, and the operation and maintenance efficiency of equipment is improved.
Description
Technical Field
The invention relates to the technical field of power equipment manufacturing, in particular to a single-shaft manual operation returnable following device for a composite isolating circuit breaker.
Background
At present, with the continuous deepening of urban power grid and rural power grid transformation, a large number of on-pole devices such as load switches and circuit breakers installed on outdoor poles are popularized and applied in the field, the on-off operation of the existing on-pole switch circuit breakers and isolating knives is two independent operation levers, the operation of the circuit breakers and isolating knives needs to be carried out on the operation levers for many times, the working procedure is complex, the workload of operation and maintenance personnel is increased, and the working efficiency is reduced; in addition, the opening and closing operations of the circuit breaker and the isolating knife of other existing switch equipment are also two independent operation rods, and an interlocking device is required to be independently operated and additionally arranged, so that the structure is relatively complex.
Disclosure of Invention
The embodiment of the invention aims to provide a single-shaft manual operation return-following device for a composite isolating circuit breaker, which can realize the switching-on and switching-off operation of the circuit breaker and an isolating switch in a sectionalized and anti-misoperation manner according to a given sequence through single-shaft manual operation, thereby greatly improving the convenience of operation, improving the operation and maintenance efficiency of equipment and simplifying the structure of the device.
In order to solve the above technical problems, an embodiment of the present invention provides a single-axis manually-operated returnable follow-up device for a composite isolation breaker, including: the single-shaft bidirectional return ratchet wheel assembly, the isolating switch opening and closing assembly, the isolating shaft, the breaker opening and closing assembly, the breaker shaft and the frame;
the single-shaft bidirectional return ratchet wheel assembly is rotationally connected with the frame;
the single-shaft bidirectional returnable ratchet assembly drives the isolating shaft to rotate through the isolating switch opening and closing assembly, and drives the circuit breaker shaft to rotate through the circuit breaker opening and closing assembly;
the single-shaft bidirectional return ratchet wheel assembly can rotate a preset angle in the clockwise direction or the reverse time needle direction under the drive of external force and can automatically return to an initial position after the external force disappears;
and when the single-shaft bidirectional return ratchet wheel assembly rotates, the isolating shaft and/or the breaker shaft are/is driven to realize opening and closing operation of the isolating switch and/or the breaker.
Further, the single-shaft bi-directional repositionable ratchet assembly includes: the main shaft, and the single-shaft operation unit, the double-ratchet wheel unit and the limiting unit are sequentially arranged along the axial direction of the main shaft;
the single-shaft operation unit is rotationally connected with the frame and sleeved at one end of the main shaft, the single-shaft operation unit drives the main shaft to rotate by a preset angle in a clockwise direction or a counterclockwise direction through the double-ratchet unit under the action of external force, drives the limit unit to move along a preset track, and returns to the original position after the external force disappears;
the double ratchet wheel unit is fixedly connected to the main shaft;
one side of the limiting unit is fixedly connected with the frame, and the other side of the limiting unit is rotatably connected with the double-ratchet unit.
Further, the single-axis operation unit includes: the device comprises an operating handle, a rocker and a bidirectional torsion spring;
the operating handle is rotationally connected with the frame, sleeved on the main shaft and fixedly connected with the rocker;
the bidirectional torsion spring is respectively connected with the frame and the rocker, and drives the rocker to move to the initial position when the external force disappears.
Further, the dual ratchet unit includes: the device comprises a first pawl, a second pawl, a bidirectional ratchet wheel and a limiting spring;
the first pawl and the second pawl are coaxial with the driven end of the rocker;
the bidirectional ratchet wheel is sleeved on the main shaft and fixedly connected with the main shaft;
and two ends of the limiting spring are respectively connected with the first pawl and the second pawl, so that the first pawl and the second pawl are spaced by a preset distance.
Further, the limiting unit includes: the device comprises a connecting rod, a limiting block, a roller and a fixed block;
one end of the connecting rod is connected with the driven end of the rocker and is coaxial with the first pawl and the second pawl, and the other end of the connecting rod is rotationally connected with the roller;
the limiting block is fixedly connected with the connecting rod, is positioned between the first pawl and the second pawl and is matched with the limiting spring for use, so that the minimum distance between the first pawl and the second pawl is kept:
the fixed block is fixedly connected with the frame, and the roller is in rolling connection with the upper surface of the fixed block.
Further, the disconnecting switch opening and closing component and/or the breaker opening and closing component are of a cam structure, an incomplete gear structure or a grooved pulley structure.
Further, the isolating switch opening and closing assembly includes: a first driving dial and a first driven dial;
the first driving plate is sleeved on the main shaft and fixedly connected with the main shaft;
the first driven driving plate is sleeved on the isolation shaft and fixedly connected with the isolation shaft;
the first driving dial is engaged with the first driven dial.
Further, the breaker opening and closing assembly includes: a second driving dial and a second driven dial;
the second driving plate is sleeved on the main shaft and fixedly connected with the main shaft;
the second driven driving plate is sleeved on the breaker shaft and fixedly connected with the breaker shaft;
the second driving dial is engaged with the second driven dial.
The technical scheme provided by the embodiment of the invention has the following beneficial technical effects:
the single-shaft manual operation can realize the opening and closing operation of the circuit breaker and the isolating switch in a sectionalized manner according to a given sequence and in an error-proof manner, so that the convenience of operation is greatly improved, the operation and maintenance efficiency of equipment is improved, and the structure of the device is simplified.
Drawings
Fig. 1 is a schematic perspective view of a single-shaft manual operation returnable forward device for a composite isolating circuit breaker according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a single-shaft bi-directional repositionable ratchet assembly provided by an embodiment of the present invention;
FIG. 3 is a schematic illustration of components of a single-axis bi-directional repositionable ratchet assembly provided by an embodiment of the present invention;
FIG. 4a is a schematic illustration of a component part assembly of a single-axis bi-directional repositionable ratchet assembly provided in accordance with an embodiment of the present invention;
FIG. 4b is a schematic diagram II of the components of the single-shaft bi-directional repositionable ratchet assembly provided by the present invention;
FIG. 4c is a schematic diagram III of the components of a single-axis bi-directional repositionable ratchet assembly provided by an embodiment of the present invention;
FIG. 5a is a schematic diagram showing a counterclockwise operation of the single-shaft bi-directional repositionable ratchet assembly according to one embodiment of the present invention;
FIG. 5b is a schematic diagram showing a second process of counterclockwise operation of the single-shaft bi-directional repositionable ratchet assembly according to the present invention;
FIG. 6a is a schematic diagram showing a single-axis bi-directional repositionable ratchet assembly operating in a counter-clockwise direction according to one embodiment of the present invention;
FIG. 6b is a schematic diagram II of a single-axis bi-directional resettable ratchet assembly according to an embodiment of the present invention operating in a counter-clockwise direction;
FIG. 7a is a schematic diagram showing a clockwise operation of the single-shaft bi-directional repositionable ratchet assembly according to one embodiment of the present invention;
FIG. 7b is a schematic diagram showing a clockwise operation of the single-shaft bi-directional repositionable ratchet assembly according to an embodiment of the present invention;
FIG. 8a is a schematic diagram showing a clockwise operation of a single-axis bi-directional repositionable ratchet assembly according to an embodiment of the present invention;
FIG. 8b is a schematic diagram II illustrating a clockwise operation of the single-axis bi-directional repositionable ratchet assembly according to an embodiment of the present invention;
FIG. 9a is a front view of a compliant device assembly provided in an embodiment of the present invention;
FIG. 9b is a top view of a compliant device according to an embodiment of the present invention;
fig. 10a is a schematic diagram of an isolating switch opening and closing assembly according to an embodiment of the present invention;
fig. 10b is a schematic diagram of a breaker opening and closing assembly according to an embodiment of the present invention;
FIG. 11a is a schematic diagram showing a clockwise rotation process of the clockwise rotation device according to the embodiment of the present invention;
FIG. 11b is a schematic diagram showing a clockwise rotation process of the clockwise rotation device according to the embodiment of the present invention;
FIG. 11c is a schematic diagram of a clockwise rotation process of the clockwise rotation device according to the embodiment of the present invention;
FIG. 12a is a schematic diagram showing a single operation of the clockwise motion device according to an embodiment of the present invention moving counterclockwise into position;
fig. 12b is a schematic diagram of a position of an opening and closing component of a disconnecting switch corresponding to a counterclockwise movement of a one-time operation clockwise moving device provided by an embodiment of the invention;
fig. 12c is a schematic diagram of a position of a circuit breaker opening and closing component corresponding to a counterclockwise movement of the one-time operation clockwise moving device provided by the embodiment of the invention;
FIG. 13a is a schematic diagram showing a counterclockwise operation and rotation process of the follow-up device according to the embodiment of the present invention;
FIG. 13b is a schematic diagram showing a second counterclockwise rotation process of the follow-up device according to the embodiment of the present invention;
FIG. 13c is a schematic diagram of a third counterclockwise rotation process of the secondary operation clockwise rotation device according to the embodiment of the invention;
FIG. 14a is a schematic diagram showing a counterclockwise rotation process of the follow-up device according to the embodiment of the present invention;
FIG. 14b is a schematic diagram showing a second counterclockwise rotation process of the follow-up device according to the embodiment of the present invention;
FIG. 14c is a schematic diagram showing a second counterclockwise rotation process of the follow-up device according to the embodiment of the present invention;
FIG. 15a is a schematic diagram showing a counter-clockwise movement of a again operable cam follower provided by an embodiment of the present invention;
fig. 15b is a schematic diagram of a position of a switching assembly of the disconnecting switch, which is provided by the embodiment of the invention and corresponds to the counter-clockwise movement of the operating and following device;
fig. 15c is a schematic diagram of a position of a switching assembly of a circuit breaker corresponding to a counter-clockwise movement of the operating and following device according to an embodiment of the present invention.
Reference numerals:
1. the device comprises a single-shaft bidirectional returnable ratchet wheel assembly, 1-1, a single-shaft operation unit, 1-1-1, an operation handle, 1-1-2, a rocker, 1-1-3, a bidirectional torsion spring, 1-2-1, a first pawl, 1-2-2, a second pawl, 1-2-3, a bidirectional ratchet wheel, 1-2-4, a limit spring, 1-3-1, a connecting rod, 1-3-2, a limit block, 1-3-3, a roller, 1-3-4, a fixed block, 1-2, a double-ratchet wheel unit, 1-3, a limit unit, 1-4, a main shaft, 2, an isolating switch opening and closing assembly, 2-1, a first driving dial plate, 2-2, a first driven dial plate, 3, an isolating shaft, 4, a circuit breaker shaft, 5, a circuit breaker opening/closing assembly, 5-1, a second driving dial plate, 5-2, a second driven dial plate, 6 and a frame.
Detailed Description
The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
Fig. 1 is a schematic perspective view of a single-shaft manual operation returnable forward device for a composite isolating circuit breaker according to an embodiment of the invention.
Referring to fig. 1, an embodiment of the present invention provides a single-shaft manual operation returnable cis-acting device for a composite isolation circuit breaker, including: the single-shaft bidirectional return ratchet wheel assembly 1, the isolating switch opening and closing assembly 2, the isolating shaft 3, the breaker opening and closing assembly 5, the breaker shaft 4 and the frame 6; the single-shaft bidirectional return ratchet wheel assembly 1 is rotationally connected with the frame 6; the single-shaft bidirectional return ratchet assembly 1 drives the isolating shaft 3 to rotate through the isolating switch opening and closing assembly 2, and the single-shaft bidirectional return ratchet assembly 1 drives the breaker shaft 4 to rotate through the breaker opening and closing assembly 5; the single-shaft bidirectional return ratchet assembly 1 can rotate a preset angle in a clockwise direction or a counterclockwise direction under the drive of external force and can automatically return to an initial position after the external force disappears; when the single-shaft bidirectional return ratchet assembly 1 rotates, the isolating shaft 3 and/or the breaker shaft 4 are/is driven to realize the opening and closing operation of the isolating switch and/or the breaker.
FIG. 2 is a schematic perspective view of a single-shaft bi-directional repositionable ratchet assembly according to an embodiment of the present invention.
FIG. 3 is a schematic illustration of components of a single-axis bi-directional resettable ratchet assembly provided by an embodiment of the invention.
FIG. 4a is a schematic illustration of a component part assembly of a single-axis bi-directional repositionable ratchet assembly according to an embodiment of the present invention.
FIG. 4b is a schematic diagram II of the components of the single-axis bi-directional repositionable ratchet assembly provided by the present invention.
FIG. 4c is a schematic diagram III of the components of a single-axis bi-directional repositionable ratchet assembly provided by an embodiment of the present invention.
Specifically, referring to fig. 2, 3, 4a, 4B and 4C, the partial cross-sectional view of fig. 4B is the cross-section B-B of fig. 4a, and the partial cross-sectional view of fig. 4C is the cross-section C-C of fig. 4 a. The single-shaft bidirectional repositionable ratchet assembly 1 comprises: the device comprises a main shaft 1-4, and a single-shaft operation unit 1-1, a double-ratchet unit 1-2 and a limit unit 1-3 which are sequentially arranged along the axial direction of the main shaft; the single-shaft operation unit 1-1 is rotationally connected with the frame 6 and sleeved at one end of the main shaft 1-4, the single-shaft operation unit 1-1 drives the main shaft 1-4 to rotate by a preset angle in the clockwise direction or the reverse time needle direction through the double-ratchet unit 1-2 under the action of the external force, and simultaneously drives the limit unit 1-3 to move along a preset track and restore to the original position after the external force disappears; the double ratchet wheel unit 1-2 is sleeved on the main shaft 1-4; one side of the limiting unit 1-3 is fixedly connected with the frame 6, and the other side is rotatably connected with the double ratchet unit 1-2.
Specifically, the single-axis operation unit 1-1 includes: the device comprises an operating handle 1-1-1, a rocker 1-1-2 and a bidirectional torsion spring 1-1-3; the operating handle 1-1-1 is rotationally connected with the frame 6, sleeved on the main shaft 1-4 and fixedly connected with the rocker 1-1-2; the bidirectional torsion spring 1-1-3 is respectively connected with the frame 6 and the rocker 1-1-2, and drives the rocker 1-1-2 to move to the initial position when the external force disappears.
Specifically, the dual ratchet unit 1-2 includes: the two-way ratchet comprises a first pawl 1-2-1, a second pawl 1-2-2, a two-way ratchet 1-2-3 and a limit spring 1-2-4; the first pawl 1-2-1 and the second pawl 1-2-2 are coaxial with the driven end of the rocker 1-1-2; the bidirectional ratchet wheel 1-2-3 is sleeved on the main shaft and is fixedly connected with the main shaft 1-4; two ends of the limiting spring 1-2-4 are respectively connected with the first pawl 1-2-1 and the second pawl 1-2-2 so that the first pawl 1-2-1 and the second pawl 1-2-2 are spaced by a preset distance.
Specifically, the limiting unit 1-3 includes: connecting rod 1-3-1, limiting block 1-3-2, roller 1-3-3 and fixed block 1-3-4; one end of the connecting rod 1-3-1 is connected with the driven end of the rocker 1-1-2 and is coaxial with the first pawl 1-2-1 and the second pawl 1-2-2, and the other end of the connecting rod is rotationally connected with the roller 1-3-3; the limiting block 1-3-2 is fixedly connected with the connecting rod 1-3-1, is positioned between the first pawl 1-2-1 and the second pawl 1-2-2, and is matched with the limiting spring 1-2-4 for use, so that a certain minimum distance is kept between the first pawl 1-2-1 and the second pawl 1-2-2; the fixed block 1-3-4 is fixedly connected with the frame 6, and the idler wheel 1-3-3 is in rolling connection with the upper surface of the fixed block 1-3-4.
Optionally, the disconnecting switch opening and closing assembly 2 and/or the breaker opening and closing assembly 5 are of a cam structure, an incomplete gear structure or a sheave structure. In the embodiment of the invention, the sheave structure is only taken as an example for explanation, but the sheave structure can be replaced by a cam structure or an incomplete gear structure.
Further, the isolating switch opening and closing assembly 2 includes: a first active dial 2-1 and a first passive dial 2-2; the first driving plate 2-1 is sleeved on the main shaft 6 and is fixedly connected with the main shaft 6; the first driven driving plate sleeve 2-2 is arranged on the isolating shaft 3 and is fixedly connected with the isolating shaft 3; the first driving dial 2-1 is engaged with the first driven dial 2-2.
Further, the breaker opening and closing assembly 5 includes: a second driving dial 5-1 and a second driven dial 5-2; the second driving plate 5-1 is sleeved on the main shaft 6 and is fixedly connected with the main shaft 6; the second driven driving plate 5-1 is sleeved on the breaker shaft 4 and is fixedly connected with the breaker shaft 4; the second driving dial 5-1 is engaged with the second driven dial 5-2.
FIG. 5a is a schematic diagram illustrating a counterclockwise operation of the single-shaft bi-directional repositionable ratchet assembly according to one embodiment of the present invention.
FIG. 5b is a schematic diagram showing a counterclockwise operation of the single-shaft bi-directional repositionable ratchet assembly according to the present invention.
FIG. 6a is a schematic diagram showing a single-axis bi-directional resettable ratchet assembly operating counter-clockwise in place according to an embodiment of the present invention.
FIG. 6b is a schematic diagram showing a single-axis bi-directional resettable ratchet assembly operating counter-clockwise in place according to an embodiment of the present invention.
In one embodiment of the present invention, as shown in fig. 5a and 5B, the partial cross-sectional view of fig. 5a is the section B-B of fig. 4a, and the partial cross-sectional view of fig. 5B is the section C-C of fig. 4 a. The single-shaft bidirectional-return ratchet assembly 1 is in an initial position, and the operating handle 1-1-1 can rotate in two directions. For example, the operating handle 1-1-1 rotates anticlockwise for a certain angle, the rocker 1-1-2 and the first pawl 1-2-1 drive the bidirectional ratchet 1-2-3 to rotate anticlockwise for a certain angle, the connecting rod 1-3-1 rotates anticlockwise relative to the remote rod 1-1-2, the roller 1-3-3 is driven to move along the limiting fixed block 1-3-4, and the second pawl 1-2 maintains a certain angle with the first pawl 1-2-1 under the action of the spring 1-2-4 and the limiting block 1-3-2, so that the anticlockwise rotation of the bidirectional ratchet 1-2-3 is not influenced; after one operation is completed, the operating handle 1-1-1 is released, the bidirectional ratchet wheel 1-2-3 rotates anticlockwise to a certain angle, at this time, under the action of the bidirectional torsion spring 1-1-3, the operating handle 1-1-1, the rocker 1-1-2, the first pawl 1-2-1, the second pawl 1-2 and the like return to the initial positions, and at this time, the operating handle can rotate bidirectionally. The single axis operated bi-directional repositionable ratchet assembly is shown in schematic counter-clockwise operation as viewed in fig. 6a and 6B, wherein the partial cross-sectional view of fig. 6a is taken as section B-B in fig. 4a and the partial cross-sectional view of fig. 6B is taken as section C-C in fig. 4 a.
FIG. 7a is a schematic diagram of a clockwise operation of the single-axis bi-directional repositionable ratchet assembly according to one embodiment of the present invention.
FIG. 7b is a schematic diagram showing a clockwise operation process of the single-shaft bi-directional repositionable ratchet assembly according to the present invention.
FIG. 8a is a schematic diagram of a single-axis bi-directional resettable ratchet assembly according to an embodiment of the invention operating clockwise in place.
FIG. 8b is a schematic diagram showing a clockwise operation of the single-axis bi-directional repositionable ratchet assembly according to one embodiment of the present invention.
As shown in fig. 7a and 7B, wherein the partial cross-sectional view of fig. 7a is the B-B section of fig. 4a and the partial cross-sectional view of fig. 7B is the C-C section of fig. 4 a. The operating handle 1-1-1 rotates clockwise for a certain angle, the rocker 1-1-2 and the pawl 1-2-2 drive the ratchet wheel 1-2-3 to rotate clockwise for a certain angle, the connecting rod 1-3-1 rotates clockwise relative to the remote rod 1-1-2 and drives the roller 1-3-3 to move along the limiting fixed block 1-3-4, and the pawl 1-2-1 keeps a certain angle with the pawl 1-1 under the action of the spring 1-2-4 and the limiting block 1-3-2, so that the clockwise rotation of the ratchet wheel 1-2-3 is not influenced; after one operation is completed, the operation handle 1-1-1 is released, the ratchet wheel 1-2-3 rotates clockwise to a certain angle, at this time, under the action of the bidirectional torsion spring 1-1-3, the operation handle 1-1-1, the rocker 1-1-2, the pawl 1-2-1, the pawl 1-2-2 and the like return to the initial positions, and at this time, the operation handle can rotate bidirectionally. The single axis operated reversible ratchet assembly 1 is shown in schematic counter-clockwise operation as viewed in fig. 8a and 8B, wherein the partial cross-sectional view of fig. 8a is taken as section B-B in fig. 4a and the partial cross-sectional view of fig. 8B is taken as section C-C in fig. 4 a.
Fig. 9a is a front view of a compliant device according to an embodiment of the present invention.
Fig. 9b is a top view of a compliant device according to an embodiment of the present invention.
Fig. 10a is a schematic diagram of an isolating switch opening and closing assembly according to an embodiment of the present invention.
Fig. 10b is a schematic diagram of a circuit breaker switching assembly according to an embodiment of the present invention.
As shown in fig. 9a, 9b, 10a and 10b, wherein the full cross-sectional view section of fig. 10a is the E-E section of fig. 9b and the full cross-sectional view section of fig. 10b is the D-D section of fig. 9 b. The following device is in an initial position, the isolating switch is in a switching-off state, the circuit breaker is in a switching-off state, the following device can move bidirectionally, but only anticlockwise movement is effective operation, and switching-on operation of the isolating switch can be realized.
Fig. 11a is a schematic diagram showing a counterclockwise operation and rotation process of the one-time operation clockwise moving device according to the embodiment of the invention.
Fig. 11b is a schematic diagram showing a counterclockwise operation and rotation process of the one-time operation clockwise device according to the embodiment of the invention.
Fig. 11c is a schematic diagram of a counterclockwise operation rotation process of the one-time operation clockwise device according to the embodiment of the invention.
Fig. 12a is a schematic diagram showing a counter-clockwise movement of a single-operation clockwise moving device according to an embodiment of the present invention.
Fig. 12b is a schematic diagram showing a position of the isolating switch on/off assembly when the one-time operation clockwise moving device provided by the embodiment of the invention moves in place counterclockwise.
Fig. 12c is a schematic diagram showing a position of a switching assembly of a circuit breaker when the one-time operation clockwise moving device provided by the embodiment of the invention moves in place anticlockwise.
Fig. 13a is a schematic diagram showing a counterclockwise operation and rotation process of the re-operation clockwise device according to the embodiment of the invention.
Fig. 13b is a schematic diagram showing a counter-clockwise rotation process of the re-operation clockwise device according to the second embodiment of the present invention.
Fig. 13c is a schematic diagram of a counter-clockwise rotation process of the re-operation clockwise device according to the embodiment of the invention.
Fig. 14a is a schematic diagram showing a counterclockwise operation and rotation process of the re-operation clockwise device according to the embodiment of the invention.
Fig. 14b is a schematic diagram showing a counter-clockwise rotation process of the re-operation clockwise device according to the second embodiment of the present invention.
Fig. 14c is a schematic diagram showing a counter-clockwise rotation process of the re-operation clockwise device according to the second embodiment of the present invention.
Fig. 15a is a schematic diagram of a counter-clockwise movement of a again operated cam follower provided by an embodiment of the present invention.
Fig. 15b is a schematic view of a position of the isolating switch on/off assembly when the re-operating cam follower provided in an embodiment of the present invention moves counter clockwise into position.
Fig. 15c is a schematic view of the position of the opening and closing assembly of the circuit breaker when the operational cam device is moved to the right and left again according to the embodiment of the present invention.
The primary hanging rod is operated to rotate the operating handle 1-1-1 anticlockwise by a certain angle alpha, the movement process of the follow-up device is shown in fig. 11a, 11b and 11c, wherein the section of the whole cross section of fig. 11b is the section E-E in fig. 9b, and the section of the whole cross section of fig. 11c is the section D-D in fig. 9 b. The main shaft 1-4 of the single-shaft bidirectional return ratchet wheel assembly 1 drives the first driving plate 2-1 to rotate anticlockwise by a certain angle, the driving pin of the first driving plate 2-1 drives the first driven plate 2-2 to rotate clockwise by a certain angle beta, closing operation of the isolating switch is realized, and the second driven plate 5-2 keeps in-situ under the action of a locking arc. After the operation of the primary hanging rod is completed, the operating handle 1-1-1 moves anticlockwise to a schematic diagram of the initial position restoring clockwise moving device under the action of the bidirectional torsion spring 1-1-3, as shown in fig. 12a, the positions of the disconnecting switch opening/closing device and the disconnecting switch opening/closing device are respectively shown in fig. 12b and fig. 12c, wherein the section of the full-section view of fig. 12b is the section E-E in fig. 9b, and the section of the full-section view of fig. 12c is the section D-D in fig. 9 b. At the moment, the circuit breaker is in a breaking state, the isolating switch is in a closing state, and the clockwise motion device can move anticlockwise to realize the closing operation of the circuit breaker or rotate clockwise to realize the breaking operation of the isolating switch.
The operating handle is operated again to rotate anticlockwise by a certain angle alpha, the movement process of the following device is shown in fig. 13a, 13b and 13c, the section of the whole cross section of fig. 13b is the section E-E in fig. 9b, and the section of the whole cross section of fig. 13c is the section D-D in fig. 9 b. The main shaft 1-4 of the single-shaft bidirectional return ratchet assembly 1 drives the second driving plate 5-1 to rotate anticlockwise by a certain angle, the driving pin of the second driving plate 5-1 drives the second driven plate 5-2 to rotate clockwise by a certain angle gamma, the switching-on operation of the circuit breaker is realized, and the first driven plate 2-2 keeps in-situ under the action of a locking arc; as shown in fig. 14a, when the operation handle 1-1-1 is rotated counterclockwise by an angle smaller than α, the second driven dial 5-2 has been rotated to an angle γ. At this time, the circuit breaker completes the closing operation, and the circuit breaker closing operation is shown in schematic views in place as shown in fig. 14b and 14c, wherein the cross section of the full sectional view of fig. 14b is the E-E cross section of fig. 9b, and the cross section of the full sectional view of fig. 14c is the D-D cross section of fig. 9 b. When the operating handle is continuously operated to rotate anticlockwise to an angle alpha, the main shaft 4 of the circuit breaker returns under the action of the return device; after the operation is completed again, the operating handle is moved to a schematic diagram in place anticlockwise by the original position following device under the action of the bidirectional torsion spring 1-1-3, as shown in fig. 15a, the positions of the disconnecting switch opening/closing device and the disconnecting switch opening/closing device are shown in fig. 15b and 15c respectively, wherein the full cross section of fig. 15b is the section E-E in fig. 9b, and the full cross section of fig. 15c is the section D-D in fig. 9 b. In this case, the circuit breaker is in a closing state, the isolating switch is in a closing state, the clockwise motion device can move bidirectionally, but only clockwise motion is effective operation, and the opening operation of the circuit breaker can be realized.
As shown in fig. 11a to 15c, the clockwise operation implementation principle of the clockwise operation implementation principle is the same as the counterclockwise operation implementation principle, and thus only the counterclockwise operation implementation mode will be described.
The embodiment of the invention aims to protect a single-shaft manually-operated returnable sequential device for a composite isolating circuit breaker, which comprises the following components: the single-shaft bidirectional return ratchet wheel assembly, the isolating switch opening and closing assembly, the isolating shaft, the breaker opening and closing assembly, the breaker shaft and the frame; the single-shaft bidirectional return ratchet wheel assembly is rotationally connected with the machine frame; the single-shaft bidirectional return ratchet assembly drives the isolating shaft to rotate through the isolating switch opening and closing assembly, and drives the breaker shaft to rotate through the breaker opening and closing assembly; the single-shaft bidirectional return ratchet wheel assembly can rotate a preset angle in a clockwise direction or a counterclockwise direction under the drive of external force and can automatically return to an initial position after the external force disappears; when the single-shaft bidirectional return ratchet wheel assembly rotates, the isolating shaft and/or the breaker shaft are/is driven to realize the opening and closing operation of the isolating switch and/or the breaker. The technical scheme has the following effects:
the single-shaft manual operation can realize the opening and closing operation of the circuit breaker and the isolating switch in a sectionalized manner according to a given sequence and in an error-proof manner, so that the convenience of operation is greatly improved, and the operation and maintenance efficiency of equipment is improved.
It is to be understood that the above-described embodiments of the present invention are merely illustrative or explanatory of the principles of the invention, and are not restrictive of the invention. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.
Claims (4)
1. A single-axis manually-operated resettable follow-up device for a composite isolation circuit breaker, comprising: the single-shaft bidirectional return ratchet wheel assembly, the isolating switch opening and closing assembly, the isolating shaft, the breaker opening and closing assembly, the breaker shaft and the frame;
the single-shaft bidirectional return ratchet wheel assembly is rotationally connected with the frame; the single-shaft bidirectional returnable ratchet assembly drives the isolating shaft to rotate through the isolating switch opening and closing assembly, and drives the circuit breaker shaft to rotate through the circuit breaker opening and closing assembly; the single-shaft bidirectional return ratchet wheel assembly can rotate a preset angle in a clockwise direction or a counterclockwise direction under the drive of external force and can automatically return to an initial position after the external force disappears; when the single-shaft bidirectional return ratchet wheel assembly rotates, the isolating shaft and/or the breaker shaft are/is driven to rotate so as to realize the opening and closing operation of the isolating switch and/or the breaker;
the single-shaft bidirectional repositionable ratchet assembly includes: the main shaft, and the single-shaft operation unit, the double-ratchet wheel unit and the limiting unit are sequentially arranged along the axial direction of the main shaft; the single-shaft operation unit is rotationally connected with the frame and sleeved at one end of the main shaft, the single-shaft operation unit drives the main shaft to rotate by a preset angle in a clockwise direction or a counterclockwise direction through the double-ratchet unit under the action of the external force, drives the limit unit to move along a preset track, and returns to the initial position after the external force disappears; the double ratchet wheel unit is fixedly connected to the main shaft; one side of the limiting unit is fixedly connected with the frame, and the other side of the limiting unit is rotationally connected with the double-ratchet unit;
the single-axis operation unit includes: the device comprises an operating handle, a rocker and a bidirectional torsion spring; the operating handle is rotationally connected with the frame, sleeved on the main shaft and fixedly connected with the rocker; the bidirectional torsion spring is respectively connected with the frame and the rocker, and drives the rocker to move to the initial position when the external force disappears;
the dual ratchet unit includes: the device comprises a first pawl, a second pawl, a bidirectional ratchet wheel and a limiting spring; the first pawl and the second pawl are coaxial with the driven end of the rocker; the bidirectional ratchet wheel is sleeved on the main shaft and fixedly connected with the main shaft; the two ends of the limiting spring are respectively connected with the first pawl and the second pawl, so that the first pawl and the second pawl are separated by a preset distance;
the limit unit includes: the device comprises a connecting rod, a limiting block, a roller and a fixed block; one end of the connecting rod is connected with the driven end of the rocker and is coaxial with the first pawl and the second pawl, and the other end of the connecting rod is rotationally connected with the roller; the limiting block is fixedly connected with the connecting rod, is positioned between the first pawl and the second pawl and is matched with the limiting spring for use, so that the first pawl and the second pawl keep a minimum distance; the fixed block is fixedly connected with the frame, and the roller is in rolling connection with the upper surface of the fixed block.
2. The single-axis manually operated resettable motion device for a composite isolation circuit breaker of claim 1, wherein,
the disconnecting switch opening and closing assembly and/or the breaker opening and closing assembly are of a cam structure, an incomplete gear structure or a grooved pulley structure.
3. The single-axis manually operable return-to-motion device for a composite isolating breaker as in claim 2,
the isolating switch opening and closing assembly comprises: a first driving dial and a first driven dial;
the first driving plate is sleeved on the main shaft and fixedly connected with the main shaft;
the first driven driving plate is sleeved on the isolation shaft and fixedly connected with the isolation shaft;
the first driving dial is engaged with the first driven dial.
4. The single-axis manually operable return-to-motion device for a composite isolating breaker as in claim 2,
the breaker divide-shut brake subassembly includes: a second driving dial and a second driven dial;
the second driving plate is sleeved on the main shaft and fixedly connected with the main shaft;
the second driven driving plate is sleeved on the breaker shaft and fixedly connected with the breaker shaft;
the second driving dial is engaged with the second driven dial.
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| CN202011294224.XA CN112509887B (en) | 2020-11-18 | 2020-11-18 | Single-shaft manual operation return forward device for composite isolation circuit breaker |
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| CN202011294224.XA CN112509887B (en) | 2020-11-18 | 2020-11-18 | Single-shaft manual operation return forward device for composite isolation circuit breaker |
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| CN112509887B true CN112509887B (en) | 2023-09-15 |
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