CN212322884U - Operating mechanism of isolating switch and isolating switch - Google Patents
Operating mechanism of isolating switch and isolating switch Download PDFInfo
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- CN212322884U CN212322884U CN202020920705.6U CN202020920705U CN212322884U CN 212322884 U CN212322884 U CN 212322884U CN 202020920705 U CN202020920705 U CN 202020920705U CN 212322884 U CN212322884 U CN 212322884U
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Abstract
The application discloses include: a motor; the motor comprises an output shaft and a worm gear speed reducer; the output shaft is in transmission connection with the main shaft through a worm gear speed reducer, and the main shaft comprises a target rotation angle; the main shaft is in transmission connection with the cam mechanism; a first microswitch; the locking mechanism comprises an electromagnetic lock, a mechanical lock, an adjusting shaft and an indicating device with a first indicating state and a second indicating state; the output shaft is in transmission connection with the adjusting shaft through a worm gear speed reducer, the electromagnetic lock is used for locking the adjusting shaft to limit the rotation of the main shaft, and the mechanical lock is used for locking the adjusting shaft to limit the rotation of the main shaft; when the electromagnetic lock locks the adjusting shaft, the indicating device is in a first indicating state; when the mechanical lock locks the adjusting shaft, the indicating device is in a second indicating state. The application discloses isolator's operating device and isolator have the advantage that the commonality is good.
Description
Technical Field
The application relates to rail transit, especially relates to isolator's operating device and isolator.
Background
The isolating switch is a no-load switch and is used for connecting and isolating an electric loop. The direct current traction power supply system is widely applied to direct current traction power supply systems of rail transit, metallurgy, mines and the like, and can also be applied to other industrial fields.
In the prior art, an operating mechanism of the disconnecting switch is generally integrated with a main circuit of the disconnecting switch, and is used for operating the disconnecting switch to switch between a separated position and a closed position.
When the isolating switch is in the separated position, the contacts have insulation distance meeting the specified requirements and obvious disconnection marks; a switching device capable of carrying a current under a normal loop condition and a current under an abnormal condition (for example, short circuit) within a predetermined time when in an on position, and required to have an interlock function; however, different parameter configurations of the disconnecting switch correspond to different branch position requirements and different close position requirements, so that corresponding interlocking structures are different, and the structural design and the assembly and debugging of the operating mechanism are complex.
SUMMERY OF THE UTILITY MODEL
In view of the above, embodiments of the present application are directed to an operating mechanism of a disconnecting switch and a disconnecting switch, so as to solve the problem of general use.
In order to achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:
an operating mechanism for a disconnector, comprising: a motor; the motor comprises an output shaft and a worm gear speed reducer; the output shaft is in transmission connection with the main shaft through the worm gear speed reducer so as to drive the main shaft to rotate around the axis of the main shaft, and the main shaft comprises at least one target rotation angle; the main shaft is in transmission connection with the cam mechanism; the cam mechanism triggers the first microswitch to stop the motor from rotating; and a locking mechanism comprising an electromagnetic lock, a mechanical lock, an adjustment shaft, and an indicating device having a first indicating state and a second indicating state; the output shaft is in transmission connection with the adjusting shaft through the worm gear speed reducer, the electromagnetic lock is used for locking the adjusting shaft to limit the rotation of the main shaft, and the mechanical lock is used for locking the adjusting shaft to limit the rotation of the main shaft; when the electromagnetic lock locks the adjusting shaft, the indicating device is in the first indicating state; when the mechanical lock locks the adjusting shaft, the indicating device is in the second indicating state.
Furthermore, the electromagnetic lock comprises a driving unit and a first bolt which can be driven by the driving unit to stretch, and a pin hole matched with the first bolt is formed in the adjusting shaft; the first bolt can be embedded into the pin hole so that the electromagnetic lock locks the adjusting shaft, and the indicating device is in the first indicating state.
Further, the indicating device comprises a second microswitch and a signal output part corresponding to the second microswitch, and when the first bolt is embedded into the pin hole, the first bolt triggers the second microswitch so that the signal output part enters a first indicating state.
Furthermore, the mechanical lock comprises a second bolt which can be driven to stretch manually, and a pin hole matched with the second bolt is formed in the adjusting shaft; the second bolt can be embedded into the pin hole so that the mechanical lock locks the adjusting shaft, and the indicating device is in the second indicating state.
Further, the indicating device comprises a third microswitch and a signal output part corresponding to the third microswitch, and when the second bolt is embedded into the pin hole, the second bolt triggers the third microswitch so that the signal output part enters a second indicating state.
Furthermore, the locking mechanism comprises a shaft sleeve, the adjusting shaft sleeve is arranged on the shaft sleeve, and a guide hole opposite to the pin hole is formed in the shaft sleeve.
Further, the guide hole is provided with a guide slope surface.
Further, the cam mechanism comprises a crank arm, a connecting rod and a rotatable cam, one end of the crank arm is fixedly connected with the main shaft, the other end of the crank arm is hinged to the connecting rod, and the connecting rod is eccentrically hinged to the cam.
Further, the operating mechanism comprises a fixed frame; the fixed frame comprises a bottom plate, a panel and a plurality of supporting columns supported between the bottom plate and the panel; the main shaft penetrates through the bottom plate, and the adjusting shaft penetrates through the panel.
An isolating switch adopting the operating mechanism comprises a rotatable knife switch and at least two electrode posts, wherein the knife switch is fixedly connected with one end of the main shaft, which is far away from the motor; when the motor drives the main shaft to rotate to the target rotation angle, the disconnecting link is communicated with the two electrode columns.
The operating mechanism of the isolating switch and the isolating switch are provided with a main shaft and a locking mechanism, and the locking mechanism comprises an electromagnetic lock, a mechanical lock, an adjusting shaft and an indicating device with a first indicating state and a second indicating state; the electromagnetic lock is used for locking the rotation of the adjusting shaft to limit the rotation of the main shaft, and the mechanical lock is used for locking the rotation of the motor to limit the rotation of the main shaft, so that the main shaft of the operating mechanism is interlocked; because the electromagnetic lock and the mechanical lock are in different interlocking modes, when the electromagnetic lock locks the motor, the indicating device is in a first indicating state; when the mechanical lock locks the motor, the indicating device is in a second indicating state; therefore, the current interlocking state of an operator can be reminded of being locked by the electromagnetic lock or the mechanical lock, and the operating mechanism can adapt to the isolating switches with different parameters and has better universality.
Drawings
FIG. 1 is a schematic structural diagram of an operating mechanism according to an embodiment of the present application;
FIG. 2 is a side view of an operating mechanism according to another embodiment of the present application;
FIG. 3 is a right side view of the operating mechanism of FIG. 2 with the faceplate omitted;
FIG. 4 is a schematic structural view of the operating mechanism of FIG. 2 from another perspective, wherein the base plate, motor, spindle, and cam mechanism are omitted;
fig. 5 is a partially enlarged view a of fig. 2.
Detailed Description
It should be noted that, in the case of conflict, the technical features in the examples and examples of the present application may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the present application and should not be construed as an improper limitation of the present application.
In the description of the embodiments of the present application, the "up", "down", "left", "right", "front", "back" orientation or positional relationship is based on the orientation or positional relationship shown in fig. 3, it is to be understood that these orientation terms are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present application.
As shown in fig. 1 to 5, an operating mechanism of a disconnector includes: the device comprises a fixed frame 8, a motor 1, a main shaft 2, a cam mechanism 3, at least one first microswitch 4 and a locking mechanism 5.
The motor 1 comprises an output shaft 11 and a worm gear reducer 12; the output shaft 11 is in transmission connection with the main shaft 2 through a worm gear speed reducer 12 so as to drive the main shaft 2 to rotate around the axis of the main shaft 2, and the main shaft 2 comprises at least one target rotation angle; the main shaft 2 is in transmission connection with the cam mechanism 3, the first microswitch 4 is used for controlling the opening and closing of the motor 1, and when the motor 1 drives the main shaft 2 to rotate to a target rotation angle, the cam mechanism 3 triggers the first microswitch 4 to stop the rotation of the motor 1.
The motor 1 can be fixed on the fixed frame 8; the first microswitch 4 can be fixed on the fixing frame 8, and the main shaft 2 can be arranged on the fixing frame 8 in a penetrating way.
When the motor 1 drives the main shaft 2 to rotate to a target rotation angle around the axis of the main shaft 2, the main shaft 2 drives the cam mechanism 3 to move to a specified position, the cam mechanism 3 triggers the first microswitch 4, the first microswitch 4 is connected to a control circuit of the motor 1, and the first microswitch 4 is disconnected, so that the motor 1 stops rotating, and the main shaft 2 can accurately stop at the target rotation angle.
The disconnecting link (mentioned below) of the isolating switch connected to the main shaft 2 can be connected with a circuit between the two electrode columns (mentioned below) at a position of the main shaft 2 corresponding to the target rotation angle, and finally the on-off function of the isolating switch is completed.
The number of the first micro switches 4 can be three, and the first micro switches correspond to three target rotation angles respectively, so that the disconnecting link can be communicated with circuits among six electrode columns, the two electrode columns form a group of circuits, three groups of circuits can be communicated/cut off, the operating mechanism is more flexible to use, and the disconnecting switch is suitable for isolating switches with different parameters.
The locking mechanism 5 comprises an electromagnetic lock 51, a mechanical lock 52, an adjustment shaft 54, and an indicating device 53 having a first indicating state and a second indicating state. The electromagnetic lock 51, the mechanical lock 52, and the indicating device 53 may be provided on the mount 8, respectively. The output shaft 11 is in transmission connection with an adjusting shaft 54 through a worm and gear speed reducer 12, the electromagnetic lock 51 is used for locking the adjusting shaft 54, so that the worm and gear speed reducer 12 is locked, and further the rotation of the main shaft 2 is limited, the mechanical lock 52 is used for locking the adjusting shaft 54, so that the worm and gear speed reducer 12 is locked, further the rotation of the main shaft 2 is limited, and finally the main shaft 2 of the operating mechanism is interlocked; the former is driven by an electromagnetic actuator, and the latter is driven by a conventional lock body manually rotated by a customized key.
Since the electromagnetic lock 51 and the mechanical lock 52 are different in interlocking manner, when the electromagnetic lock 51 locks the adjusting shaft 54, the indicating device 53 is in a first indicating state; when the mechanical lock 52 locks the adjusting shaft 54, the indicating device 53 is in a second indicating state; therefore, the current interlocking state of an operator can be reminded of whether the electromagnetic lock 51 or the mechanical lock 52 is locked, and the operating mechanism can adapt to isolating switches with different parameters and has better universality.
Further, the indicating device 53 may include a signal output portion (not shown); the signal output part may be an indicator light; when the indicating device 53 is in the first indicating state or the second indicating state, the indicator lamp is turned on or off. Generally, indicator lights are lit with a distinctive light color; for example, the first indicating state is green and the second indicating state is red. The indicator light can be a plurality of indicator lights, and the first indication state or the second indication state is represented by the fact that different indicator lights are turned on or off; the signal output part can be a sound generating device which generates different sounds when the indicating device 53 is in the first indicating state or the second indicating state; the signal output portion may be a display screen that displays different prompt images and the like when the indicating device 53 is in the first indicating state or the second indicating state.
In a possible implementation mode, as shown in fig. 1 to 5, the output shaft 11 is in transmission connection with the main shaft 2 through a worm gear reducer 12, so that the axis of the output shaft 11 and the axis of the main shaft 2 can be staggered to be fixed on the fixing frame 8 respectively, and the structure is more compact. The output shaft 11 drives the adjusting shaft 54 to rotate around the self axis of the adjusting shaft 54 through the worm gear reducer 12.
In one possible embodiment, as shown in fig. 1 to 5, the electromagnetic lock 51 includes a driving unit (not shown) and a first pin 511 driven by the driving unit to extend and retract, the driving unit may be a linear motor or a step motor, and the adjusting shaft 54 is formed with a pin hole 56 engaged with the first pin 511; when the first latch 511 is inserted into the pin hole 56 so that the electromagnetic lock 51 locks the adjusting shaft 54, the indicating device 53 is in the first indicating state.
The indicating means 53 comprises a second microswitch 531, and when the first latch 511 is inserted into the pin hole 56, the first latch 511 triggers the second microswitch 531 to make the signal output part enter the first indicating state.
Specifically, when the first pin 511 is driven by the driving unit to extend, and the first pin 511 extends into the pin hole 56, the pin hole 56 may be along the axial direction of the adjusting shaft 54, in this case, the shape of the pin hole 56 is a shape other than a circle, for example, the shape of the pin hole 56 is a polygon, the first pin 511 also has a shape matched with the pin hole 56, so as to prevent the adjusting shaft 54 from rotating around its own axis, and the pin hole 56 may also be arranged along the radial direction of the adjusting shaft 54. The adjusting shaft 54 cannot rotate around the axis thereof by locking, and then the worm gear reducer 12 is limited in turn, and finally the main shaft 2 stops rotating.
In the process that the electromagnetic lock 51 locks the adjusting shaft 54, the indicating device 53 is in a first indicating state, the first bolt 511 can be a long strip body, the extension and retraction of the first bolt 511 are just concepts corresponding to the electromagnetic lock 51, and the extension and retraction of the first bolt 511 can trigger the second microswitch 531; taking the signal output part as an indicator light as an example, the second microswitch 531 is a normally-on switch, the first bolt 511 extends out, the plectrum of the second microswitch 531 is off, the circuit of the indicator light is on, the display is in the first indication state, the first bolt 511 retracts, the plectrum of the second microswitch 531 is on, the circuit of the indicator light is off, and the first indication state exits.
In one possible embodiment, as shown in fig. 1 to 5, the mechanical lock 52 includes a second latch 521 that can be driven to extend and retract manually, and the adjusting shaft 54 is formed with a pin hole 56 that is matched with the second latch 521; the second latch 521 can be inserted into the pin hole 56 so that the mechanical lock 52 locks the adjusting shaft 54 and the indicating device 53 is in the second indicating state.
The indicating device 53 comprises a third microswitch 532, when the second latch 521 is embedded in the pin hole 56, the second latch 521 triggers the third microswitch 532 to enable the signal output part to enter a second indicating state.
Similar to the previous embodiment, when the second latch 521 extends under the action of manually rotating the lock cylinder, the second latch 521 extends into the pin hole 56, the adjusting shaft 54 cannot rotate around its axis, and then the worm gear reducer 12 is limited, and finally the main shaft 2 stops rotating.
In the process that the mechanical lock 52 locks the adjusting shaft 54, the indicating device 53 is shown in the second indicating state, the second bolt 521 can be a long strip body, the extension and retraction of the second bolt 521 are only concepts relative to the mechanical lock 52, and the extension and retraction of the second bolt 521 can trigger the third microswitch 532; taking the signal output part as an indicator light as an example, the third microswitch 532 is a normally-on switch, the second bolt 521 extends out, the dial plate of the third microswitch 532 is disconnected, the circuit of the indicator light is connected, the display is in a second indication state, the second bolt 521 retracts, the dial plate of the third microswitch 532 is connected, the circuit of the indicator light is disconnected, and the indicator light exits from the second indication state.
It should be understood that in the present embodiment and the previous embodiment, there may be one pin hole 56, and the mechanical lock 52 locks the motor 1 and the electromagnetic lock 51 locks the motor 1 alternatively. Of course, the pin holes 56 may be plural to match the second latch 521 and the first latch 511, respectively, and the processes of locking the adjusting shaft 54 by the mechanical lock 52 and locking the adjusting shaft 54 by the electromagnetic lock 51 may be performed separately or simultaneously, and various interlocking manners are used to ensure that the main shaft 2 is locked, prevent displacement, and be used more flexibly. Correspondingly, taking the signal output part as an indicator light as an example, the number of the indicator lights is two or more, and the first indication state and the second indication state can occur independently or simultaneously; if the number of the indicator lights is one, the first indication state and the second indication state are selected to appear.
In one possible embodiment, as shown in fig. 1 to 5, the locking mechanism 5 includes a shaft sleeve 541, the adjusting shaft 54 is sleeved on the shaft sleeve 541, and the shaft sleeve 541 is embedded in the fixing frame 8, so that the adjusting shaft 54 is inserted into the fixing frame 8. The shaft sleeve 541 is formed with a guide hole 542 opposite to the pin hole 56 for guiding the second latch 521 and/or the first latch 511 to be inserted into the pin hole 56.
In one possible embodiment, as shown in fig. 1-5, the guiding hole 542 has a guiding ramp 5421 to provide guidance for the first latch 511 and/or the second latch 521 to prevent the insertion deviation from causing the locking adjustment shaft 54 to fail.
In one possible embodiment, as shown in fig. 1 to 5, the cam mechanism 3 includes a crank arm 32, a link 33, and a rotatable cam 31; the cam 31 is rotatably fixed on the fixing frame 8, and the first microswitches 4 can be uniformly distributed around the cam 31 along the circumferential direction. One end of the crank arm 32 is fixedly connected with the main shaft 2, the other end of the crank arm 32 is hinged with the connecting rod 33, and the connecting rod 33 is eccentrically hinged with the cam 31, so that a four-link transmission mechanism is formed.
Specifically, when the output shaft 11 of the motor 1 rotates to drive the main shaft 2 to rotate, the main shaft 2 drives the crank arm 32 to further transmit to the connecting rod 33, the connecting rod 33 drives the cam 31 to rotate, the protruding part of the cam 31 triggers the first microswitch 4, and the first microswitch 4 is switched off, so that the motor 1 stops rotating, the main shaft 2 can accurately stop at a target rotating angle, and finally the on-off function of the isolating switch is realized.
In a possible embodiment, as shown in fig. 1 to 5, the operating mechanism comprises a fixed frame 8; the fixing frame 8 includes a bottom plate 81, a face plate 82, and a plurality of support columns 83 supported between the bottom plate 81 and the face plate 82, thereby providing fixing to the respective portions.
The main shaft 2 is arranged on the bottom plate 81 in a penetrating mode, the adjusting shaft 54 is arranged on the panel 82 in a penetrating mode, and the motor 1 is vertically arranged between the bottom plate 81 and the panel 82, so that the structure is compact. The axes of the adjusting shaft 54 and the main shaft 2 can be collinear, so that unnecessary transmission structures are reduced, and the structure is compact.
In a possible embodiment, shown in fig. 1 to 5, the operating mechanism comprises an aviation plug 71, the aviation plug 71 being arranged on a panel 82 to facilitate access to the line. A viewing window 811 is formed on the base plate 81 to facilitate viewing of the position of a knife switch (mentioned below).
One possible implementation manner, as shown in fig. 1 to 5, the operating mechanism includes a coupler 73 and a commutator 72 having a rotating shaft 721, the commutator 72 is connected to the output shaft 11 of the motor 1 through the coupler 73, the rotating shaft 721 is disposed on the panel 82 in a penetrating manner, a key slot (not labeled) is disposed on the rotating shaft 721, an operating handle (not labeled) is inserted into the rotating shaft 721 through the key slot, the commutator 72 is driven by rotating the operating handle, the coupler 73 is then driven, and the coupler drives the motor 1 to rotate the spindle 2, so as to realize manual emergency operation in case of a failure of the motor 1.
The isolating switch comprises a rotatable knife switch and at least two electrode columns, and the knife switch is fixedly connected with one end, far away from the motor 1, of the main shaft 2. The disconnecting link is perpendicular to the axis of the spindle 2 and is T-shaped, when the spindle 2 is driven by the motor 1 to rotate to a target rotation angle, the disconnecting link rotates between the two electrode columns to communicate the two electrode columns, the circuit is communicated, when the spindle 2 is driven by the motor 1 to leave the target rotation angle, the disconnecting link is far away from the two electrode columns, and the circuit is cut off.
The various embodiments/implementations provided herein may be combined with each other without contradiction.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. Operating device of isolator, its characterized in that includes:
a motor (1); the motor (1) comprises an output shaft (11) and a worm gear speed reducer (12);
the output shaft (11) is in transmission connection with the main shaft (2) through the worm gear speed reducer (12) to drive the main shaft (2) to rotate around the axis of the main shaft (2), and the main shaft (2) comprises at least one target rotation angle;
the main shaft (2) is in transmission connection with the cam mechanism (3);
the first microswitch (4) is used for controlling the starting and the stopping of the motor (1), the motor (1) drives the spindle (2) to rotate to the target rotation angle, and the cam mechanism (3) triggers the first microswitch (4) to stop the motor (1) from rotating; and a locking mechanism (5), the locking mechanism (5) comprising an electromagnetic lock (51), a mechanical lock (52), an adjustment shaft (54), and an indicating device (53) having a first indicating state and a second indicating state; the output shaft (11) is in transmission connection with the adjusting shaft (54) through the worm gear speed reducer (12), the electromagnetic lock (51) is used for locking the adjusting shaft (54) to limit the rotation of the main shaft (2), and the mechanical lock (52) is used for locking the adjusting shaft (54) to limit the rotation of the main shaft (2);
when the electromagnetic lock (51) locks the adjusting shaft (54), the indicating device (53) is in the first indicating state; when the mechanical lock (52) locks the adjusting shaft (54), the indicating device (53) is in the second indicating state.
2. The operating mechanism of claim 1, wherein: the electromagnetic lock (51) comprises a driving unit and a first bolt (511) which can be driven by the driving unit to stretch and retract, and a pin hole (56) matched with the first bolt (511) is formed in the adjusting shaft (54);
the first bolt (511) can be inserted into the pin hole (56) so that the electromagnetic lock (51) locks the adjusting shaft (54), and the indicating device (53) is in the first indicating state.
3. The operating mechanism of claim 2, wherein: the indicating device (53) comprises a second microswitch (531) and a signal output part corresponding to the second microswitch (531), and when the first bolt (511) is embedded into the pin hole (56), the first bolt (511) triggers the second microswitch (531) to enable the signal output part to enter a first indicating state.
4. The operating mechanism of claim 1, wherein: the mechanical lock (52) comprises a second bolt (521) which can be driven to stretch and retract manually, and a pin hole (56) matched with the second bolt (521) is formed in the adjusting shaft (54); the second bolt (521) can be embedded into the pin hole (56) so that the mechanical lock (52) locks the adjusting shaft (54), and the indicating device (53) is in the second indicating state.
5. The operating mechanism of claim 4, wherein: the indicating device (53) comprises a third microswitch (532) and a signal output part corresponding to the third microswitch (532), and when the second bolt (521) is embedded into the pin hole (56), the second bolt (521) triggers the third microswitch (532) to enable the signal output part to enter a second indicating state.
6. Operating mechanism according to claim 2 or 4, characterized in that: the locking mechanism (5) comprises a shaft sleeve (541), the adjusting shaft (54) is sleeved on the shaft sleeve (541), and a guide hole (542) which is opposite to the pin hole (56) is formed in the shaft sleeve (541).
7. The operating mechanism of claim 6, wherein: the guide hole (542) is provided with a guide slope surface (5421).
8. The operating mechanism of claim 1, wherein: cam mechanism (3) include crank arm (32), connecting rod (33) and rotatable cam (31), the one end of crank arm (32) with main shaft (2) fixed connection, the other end of crank arm (32) with connecting rod (33) are articulated, connecting rod (33) with cam (31) eccentric articulated.
9. The operating mechanism of claim 1, wherein: the operating mechanism comprises a fixed frame (8); the fixed frame (8) comprises a bottom plate (81), a panel (82) and a plurality of supporting columns (83) supported between the bottom plate (81) and the panel (82);
the main shaft (2) penetrates through the bottom plate (81), and the adjusting shaft (54) penetrates through the panel (82).
10. A disconnector employing an operating mechanism according to any one of claims 1 to 9, characterized in that: the isolating switch comprises a rotatable knife switch and at least two electrode columns, and the knife switch is fixedly connected with one end of the main shaft (2) far away from the motor (1);
when the motor (1) drives the spindle (2) to rotate to the target rotation angle, the disconnecting link is communicated with the two electrode columns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020920705.6U CN212322884U (en) | 2020-05-27 | 2020-05-27 | Operating mechanism of isolating switch and isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020920705.6U CN212322884U (en) | 2020-05-27 | 2020-05-27 | Operating mechanism of isolating switch and isolating switch |
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| Publication Number | Publication Date |
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| CN212322884U true CN212322884U (en) | 2021-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020920705.6U Active CN212322884U (en) | 2020-05-27 | 2020-05-27 | Operating mechanism of isolating switch and isolating switch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113944385A (en) * | 2021-10-25 | 2022-01-18 | 中铁第四勘察设计院集团有限公司 | Heavy push rod lock for tunnel protection door and tunnel protection door comprising heavy push rod lock |
| WO2023217210A1 (en) * | 2022-05-11 | 2023-11-16 | 上海良信电器股份有限公司 | Operation mechanism capable of being operated at multiple sides, isolation switch and switch appliance |
-
2020
- 2020-05-27 CN CN202020920705.6U patent/CN212322884U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113944385A (en) * | 2021-10-25 | 2022-01-18 | 中铁第四勘察设计院集团有限公司 | Heavy push rod lock for tunnel protection door and tunnel protection door comprising heavy push rod lock |
| CN113944385B (en) * | 2021-10-25 | 2023-04-28 | 中铁第四勘察设计院集团有限公司 | Heavy push rod lock for tunnel protection door and tunnel protection door comprising same |
| WO2023217210A1 (en) * | 2022-05-11 | 2023-11-16 | 上海良信电器股份有限公司 | Operation mechanism capable of being operated at multiple sides, isolation switch and switch appliance |
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