CN217881316U - Circuit breaker advancing mechanism locking device - Google Patents
Circuit breaker advancing mechanism locking device Download PDFInfo
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- CN217881316U CN217881316U CN202221986077.7U CN202221986077U CN217881316U CN 217881316 U CN217881316 U CN 217881316U CN 202221986077 U CN202221986077 U CN 202221986077U CN 217881316 U CN217881316 U CN 217881316U
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Abstract
The utility model relates to the technical field of electrical equipment-medium voltage switch, in particular to a breaker propulsion mechanism locking device which comprises a lead screw, an interlocking assembly, a connecting plate assembly, a transmission plate assembly and a main shaft assembly, and is characterized in that a test position shifting block is fixed on the lead screw; the interlocking assembly comprises a nut, a nut mounting plate, a working position shifting block, a closing interlocking plate and a reset torsion spring; the connecting plate assembly comprises an interlocking bent plate, the transmission plate assembly comprises a transmission connecting plate, the main shaft assembly comprises a main shaft and a connecting lever, the connecting lever is fixed on the main shaft, the interlocking bent plate and the transmission connecting plate are installed on a partition plate of a case and can move up and down within a certain range, the interlocking bent plate is connected with a closing interlocking plate, the interlocking bent plate is in contact with the transmission connecting plate, the transmission connecting plate is connected with the connecting lever, and the closing interlocking plate is driven to be in an unlocking position and a locking position respectively when a breaker is switched on and off. The utility model discloses it is simple to connect the transmission part, the cost control of being convenient for.
Description
Technical Field
The utility model relates to an electrical equipment-medium voltage switch technical field, concretely relates to circuit breaker advancing mechanism blocking device.
Background
In the existing 40.5kV vacuum circuit breaker, in order to realize that the circuit breaker is pushed into a switch cabinet and withdrawn, namely, the circuit breaker moves between a test position and a working position, handcart driven by a propelling mechanism is arranged, the handcart is accurately moved by virtue of screw transmission of the propelling mechanism, a mechanical interlocking structure is usually added on the propelling mechanism in order to prevent the screw from reversing, but the propelling mechanism is more complicated, and inconvenience is caused to installation and maintenance personnel.
The interlocking device of the existing handcart advancing mechanism of the circuit breaker is of a ratchet wheel and pawl structure, a spring is used as a reset piece, and when a lead screw is in place, an interlocking rod drives the spring to drive a push plate to rotate, so that a pawl is pushed to be clamped with a ratchet wheel, and the effect of locking the lead screw is achieved.
The existing interlocking device of the propulsion mechanism has a complex transmission structure and is inconvenient to install and maintain, the reliability of a mechanical structure can be continuously reduced along with frequent friction, the requirements on each component member are high, the cost is difficult to control, and the interlocking device is not suitable for large-scale production and use of circuit breaker products.
SUMMERY OF THE UTILITY MODEL
The defects in the prior art are overcome, and a proper and reliable pushing mechanism locking device is provided.
A circuit breaker propulsion mechanism locking device comprises a lead screw, an interlocking assembly, a connecting plate assembly, a transmission plate assembly and a main shaft assembly, and is characterized in that a test position shifting block is fixed on the lead screw; the interlocking assembly comprises a nut, a nut mounting plate, a working position shifting block, a closing interlocking plate and a reset torsion spring; the screw installation plate is fixed on a case of the circuit breaker, the screw is installed on the screw installation plate, the lead screw is connected with the screw installation plate through the screw and penetrates through the working position shifting block to drive the working position shifting block to synchronously rotate, the working position shifting block keeps a fixed distance with the screw installation plate through a pressure spring, a shaft is fixed on the screw installation plate, a closing interlocking plate is installed on the shaft and rotates around the shaft to form a locking position and a non-locking position, the working position shifting block or a test position shifting block is clamped by the closing interlocking plate in the locking position, the closing interlocking plate is not clamped in the non-locking position, and the reset torsion spring enables the closing interlocking plate to have a pretightening force for turning to the non-locking position; the connecting plate assembly comprises an interlocking bent plate, the transmission plate assembly comprises a transmission connecting plate, the main shaft assembly comprises a main shaft and a connecting lever, the connecting lever is fixed on the main shaft, the interlocking bent plate and the transmission connecting plate are installed on a partition plate of a case and can move up and down within a certain range, the interlocking bent plate is connected with a closing interlocking plate, the interlocking bent plate is in contact with the transmission connecting plate, the transmission connecting plate is connected with the connecting lever, and the closing interlocking plate is driven to be in an unlocking position and a locking position respectively when a breaker is switched on and off.
The interlocking device comprises an interlocking electromagnet which is fixed on a breaker case and used for clamping the interlocking bent plate when the breaker is switched on and releasing the interlocking bent plate when the breaker is switched off.
Furthermore, the locking device further comprises an L-shaped mounting plate, the L-shaped mounting plate is mounted on the case, and the locking electromagnet is mounted on the L-shaped mounting plate.
Furthermore, the interlocking bent plate and the closing interlocking plate are connected with each other through an interlocking piece and a connecting plate, the interlocking piece is connected with the closing interlocking plate, the interlocking piece is connected with the connecting plate, and the connecting plate is connected with the interlocking bent plate.
Furthermore, the switching-on interlocking plate is connected with an interlocking piece through a first pin, and the interlocking piece is fixedly connected with the connecting plate and the interlocking bent plate through screws and nuts.
The utility model discloses there is following advantage:
1) The locking device can be used for being matched with a propelling mechanism of a driver, and a screw rod interlocking function is added on the original functions of accurate locking work and test position;
2) The interlocking function is realized by controlling the attraction of the interlocking electromagnet, when the breaker is switched on, the interlocking electromagnet is not electrified, the armature part of the interlocking electromagnet blocks the interlocking bent plate connected with the interlocking piece of the advancing mechanism to prevent the interlocking bent plate from acting, when the breaker is switched off, the armature of the electromagnet is electrified to attract and remove the interlocking, and the screw rod of the advancing mechanism can be shaken.
3) The design of the attaching product is closely matched with the rest components of the pushing mechanism of the circuit breaker, so that the reliability of the product is ensured;
4) The locking electromagnet is simple to control, and is convenient to maintain and install;
5) The connecting transmission parts are simple, and the cost is convenient to control.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
FIG. 2 is a perspective view of the propulsion mechanism and interlock assembly;
FIG. 3 is a front view of the structure of the propulsion mechanism and key parts of the interlocking assembly;
FIG. 4 is a top view of the propulsion mechanism and interlock assembly key components;
FIG. 5 is a schematic diagram of the overall structure of the connection plate assembly, the spindle assembly, the transmission plate assembly, the locking device and the chassis (part);
FIG. 6 is a schematic diagram of an interlock function implementation action;
the labels in the figure are as follows: the interlocking device comprises a propelling mechanism 1, a screw static support 11, a positioning sleeve 12, a test position shifting block 13, a screw 14, a screw 15, a screw 2, an interlocking assembly 21, a screw mounting plate 21, a reset torsion spring 22, a 23-shaft 24-switching-on interlocking plate, a first pin 25, a 26 interlocking piece, a working position shifting block 27, a connecting plate 3, a connecting plate 31, an interlocking bent plate 32, a main shaft 4, a main shaft 41, a crank arm 42, a transmission plate 5, a transmission connecting plate 51, a third pin 52, a locking device 6, a locking electromagnet 61, a 62L-shaped mounting plate, a chassis 7, a chassis backplate 71, a chassis fixing bent plate 73, a main shaft 8, a vertical downward movement direction 9 and a closing plate 10 movement direction.
Detailed Description
The overall structural assembly of this embodiment is shown in fig. 1.
Propulsion mechanism 1 is connected with interlocking assembly 2 in this structure, interlocking assembly 2 fixes on quick-witted case 7, connecting plate assembly 3 is connected with interlocking assembly 2 and is installed simultaneously in baffle (not marking) one side of quick-witted case 7, main shaft assembly 4 passes the through-hole of baffle (not marking), install inside quick-witted case 7 through the axle sleeve, keep off the card etc., driving plate assembly 5 also installs on quick-witted case 7 baffle, with connecting plate assembly 3 at the baffle homonymy, the rethread screw nut is connected with the turning arm 42 on main shaft assembly 4, blocking device 6 passes through L shape mounting panel 62 and fixes on quick-witted case backplate 71 of quick-witted case 7.
The specific connection condition of the structure is analyzed according to fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6. The screw static support 11 is connected with a screw 14 through a positioning sleeve 12 fixed on the screw static support, a test position shifting block 13 is welded on the screw 14, the screw 14 is connected with the interlocking assembly 2 through a screw 15 arranged on the interlocking assembly 2, meanwhile, the screw passes through a working position shifting block 27 arranged in the interlocking assembly 2 and finally passes through a through hole of the case 7, wherein the working position shifting block 27 is pressed on a screw mounting plate 21 by a pressure spring and can synchronously rotate with the screw 14, and the working position shifting block 27 is fixed relative to the screw mounting plate and moves forwards and backwards along with the screw mounting plate 21. The nut mounting plate 21 is fixed on the case fixing bent plate 73 by screws and nuts, the reset torsion spring 22 is sleeved on the shaft 23, and meanwhile, two ends of the reset torsion spring are respectively clamped on the nut mounting plate 21 and the closing interlocking plate 24, so that elasticity can be provided for the closing interlocking plate 24. The shaft 23 penetrates through the closing interlocking plate 24 to be installed in the interlocking assembly 2, so that the closing interlocking plate can only rotate around the shaft 23, the closing interlocking plate 24 is connected with the interlocking piece 26 through the first pin 25, and the interlocking piece 26 is fixedly connected with the connecting plate 31 and the connecting plate 31 is fixedly connected with the interlocking bent plate 32 through screws and nuts. The transmission plate assembly 5 is arranged on a partition plate (not marked) of the case 7 through a pin III 52, the top of a transmission connecting plate 51 is connected with the interlocking bent plate 32, the bottom of the transmission connecting plate is connected with a crank arm 42 through a screw, and the crank arm 42 is arranged on the main shaft 41 and is matched with a six-equal-dividing-groove structure of the main shaft 41 and can rotate along with the main shaft 41. The latching electromagnet 61 is mounted on the L-shaped mounting plate 62 and is fixed to the chassis back plate 71, and the interlocking bent plate has a protrusion that engages with the latching electromagnet 61.
The operation of this embodiment will be described in detail with reference to fig. 6. Fig. 6 shows an overall state of the present embodiment after the breaker is opened at the working position, when the breaker is opened, the spindle 41 rotates in the spindle rotating direction 8 shown in the figure to drive the crank arm 42 mounted thereon to rotate in the same direction, the crank arm 42 pulls the transmission connecting plate 51 connected thereto to move in the vertical downward moving direction 9 shown in the figure during the rotation process until the breaker is opened in place, at this time, the latching electromagnet 61 is electrically attracted, and no longer blocks the interlocking bent plate 32, the closing interlocking plate 24 rotates in the interlocking plate moving direction 10 shown in the figure under the action of the reset torsion spring 22 to drive the interlocking piece 26 and the interlocking bent plate 32 connected thereto to move in the vertical downward moving direction 9 shown in the figure, at this time, the handle is normally shaken to rotate the lead screw 14, the test position dial 13 welded on the lead screw 14 is no longer blocked by the left end of the closing interlocking plate 24, the working position dial 27 is no longer blocked by the notch of the interlocking plate 24, and the lead screw 14 can freely rotate to switch the breaker to the test position or the working position.
When the switching-on operation is performed, if the switching-on operation is performed at the test position, the test position shifting block 13 on which the lead screw 14 moves reaches the position below the switching-on interlocking plate 24, the spindle 41 rotates in the direction opposite to the rotating direction 8 of the spindle shown in the drawing to drive the crank arm 42 mounted on the upper side to rotate in the same direction, the crank arm 42 pushes the transmission connecting plate 51 connected with the crank arm to move in the direction opposite to the vertical downward moving direction 9 shown in the drawing in the rotating process, the transmission connecting plate 51 pushes the interlocking bent plate 32 connected with one end of the transmission connecting plate to move in the direction opposite to the vertical downward moving direction 9 shown in the drawing in the moving process, the interlocking piece 26 connected with the other end of the interlocking bent plate 32 also moves together, the switching-on interlocking plate 24 is driven to rotate in the direction opposite to the moving direction 10 of the switching-on interlocking plate shown in the drawing against the elastic force of the reset torsion spring 22, the switching-on interlocking plate 24 blocks the test position shifting block 13, the locking electromagnet 61 is not to be sucked any more, the interlocking bent plate 32 is also in case of being out of electricity, and the interlocking piece 26 and the switching-on interlocking plate 24 cannot move, and finally the lead screw is locked. If the spindle 41 moves to the closing interlocking plate 24 at the working position and the closing is the same as at the testing position, the locking electromagnet 61 loses power to clamp the interlocking bent plate 32, but the closing interlocking plate 24 clamps the working position shifting block 27 by using the notch, so that the screw 14 is locked, and the interlocking function is realized.
Claims (5)
1. A locking device of a circuit breaker pushing mechanism is characterized by comprising a screw rod, an interlocking assembly, a connecting plate assembly, a transmission plate assembly and a main shaft assembly, wherein a test position shifting block is fixed on the screw rod; the interlocking assembly comprises a nut, a nut mounting plate, a working position shifting block, a closing interlocking plate and a reset torsion spring; the screw installation plate is fixed on a case of the circuit breaker, the screw is installed on the screw installation plate, the lead screw is connected with the screw installation plate through the screw and penetrates through the working position shifting block to drive the working position shifting block to synchronously rotate, the working position shifting block keeps a fixed distance with the screw installation plate through a pressure spring, a shaft is fixed on the screw installation plate, a closing interlocking plate is installed on the shaft and rotates around the shaft to form a locking position and a non-locking position, the working position shifting block or a test position shifting block is clamped by the closing interlocking plate when the locking position is achieved, the closing interlocking plate is not clamped when the non-locking position is achieved, and the reset torsion spring enables the closing interlocking plate to have a pretightening force for turning to the non-locking position; the connecting plate assembly comprises an interlocking bent plate, the transmission plate assembly comprises a transmission connecting plate, the main shaft assembly comprises a main shaft and a connecting lever, the connecting lever is fixed on the main shaft, the interlocking bent plate and the transmission connecting plate are installed on a partition plate of a case and can move up and down within a certain range, the interlocking bent plate is connected with a closing interlocking plate, the interlocking bent plate is in contact with the transmission connecting plate, the transmission connecting plate is connected with the connecting lever, and the closing interlocking plate is driven to be in an unlocking position and a locking position respectively when a breaker is switched on and off.
2. The locking device of claim 1, further comprising a locking device, wherein the locking device comprises a locking electromagnet, the locking electromagnet is fixed on the case of the circuit breaker and is used for locking the interlocking bent plate when the circuit breaker is closed and releasing the interlocking bent plate when the circuit breaker is opened.
3. The circuit breaker advance mechanism lockout device of claim 2, further comprising an L-shaped mounting plate mounted on the chassis, the lockout electromagnet being mounted on the L-shaped mounting plate.
4. The circuit breaker propulsion mechanism blocking device of claim 1, wherein the interlock plate and the closing interlock plate are interconnected by an interlock tab and a connection plate, the interlock tab is connected to the closing interlock plate, the interlock tab is connected to the connection plate, and the connection plate is connected to the interlock plate.
5. The circuit breaker advancing mechanism blocking device according to claim 4, wherein the closing interlocking plate is connected with the interlocking piece through a first pin, and the interlocking piece is fixedly connected with the connecting plate and the connecting plate is fixedly connected with the interlocking bent plate through screws and nuts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221986077.7U CN217881316U (en) | 2022-07-29 | 2022-07-29 | Circuit breaker advancing mechanism locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221986077.7U CN217881316U (en) | 2022-07-29 | 2022-07-29 | Circuit breaker advancing mechanism locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217881316U true CN217881316U (en) | 2022-11-22 |
Family
ID=84057161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221986077.7U Active CN217881316U (en) | 2022-07-29 | 2022-07-29 | Circuit breaker advancing mechanism locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217881316U (en) |
-
2022
- 2022-07-29 CN CN202221986077.7U patent/CN217881316U/en active Active
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