Device for controlling in and out of breaker drawer and electric closing and opening through single motor

Abstract

The invention discloses a single-motor control circuit breaker drawer in-out and electric closing and opening device which comprises a shell, a driving motor, a drawer transmission screw, a closing and opening operation shaft and a transmission shaft are arranged on the shell, a first gear and a second gear are installed on a motor shaft of the driving motor, the first gear and the second gear are matched through a first clutch, and a second gear is installed on the transmission shaft. A third gear meshed with the second gear is installed on the transmission shaft in a linkage mode, a fourth gear meshed with the third gear is arranged on the drawer transmission screw rod, a linkage disc and a fifth gear are installed on the opening and closing operation shaft, the fifth gear is meshed with the first gear, and the linkage disc is matched with the fifth gear through a second clutch. The shell is further provided with a first electromagnet used for controlling the first clutch to be separated and combined and a second electromagnet used for controlling the second clutch to be separated and combined. Electric push-in and push-out and electric switching-on and switching-off of the circuit breaker drawer are achieved through the single motor, the occupied space of the structure is reduced, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit breaker structure, in particular to a device for controlling the in-out of circuit breaker drawer and the electric closing and opening of circuit breaker. BACKGROUND

[0002] The universal circuit breaker is also called frame type circuit breaker, which can be connected, carried and interrupted under normal circuit conditions, and can also be interrupted under specified abnormal circuit conditions. In terms of the application of universal circuit breakers, it is divided into fixed circuit breakers and pull-out circuit breakers. Since the pull-out circuit breaker is mounted in the drawer and can move in the drawer, it has the advantage of convenient detection and maintenance, and is widely used.

[0003] At present, the in-out of the circuit breaker drawer and the electric closing and opening of the circuit breaker are driven by two sets of devices, and the two sets of devices are driven by one motor respectively. This not only occupies a large space in structure, but also has a high production cost. SUMMARY

[0004] The purpose of the present application is to provide a device for controlling the in-out of circuit breaker drawer and the electric closing and opening of circuit breaker by a single motor. The present application realizes the electric pushing in and out of circuit breaker drawer and the electric closing and opening of circuit breaker by a single motor, which not only greatly reduces the occupied space of the structure, but also significantly reduces the production cost.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a device for controlling the in-out of circuit breaker drawer and the electric closing and opening of circuit breaker by a single motor, comprising a shell, a driving motor, a drawer transmission screw rod, an opening and closing operation shaft and a transmission shaft are arranged on the shell, a first gear is connected to the motor shaft of the driving motor and a second gear is rotatably installed, the first gear and the second gear are matched by a first clutch, a third gear meshing with the second gear is rotatably installed on the transmission shaft, a fourth gear meshing with the third gear is arranged on the drawer transmission screw rod, a linkage disc is connected to the opening and closing operation shaft and a fifth gear is rotatably installed, the fifth gear is meshed with the first gear, and the linkage disc is matched with the fifth gear by a second clutch; a first electromagnet and a second electromagnet are further arranged on the shell, the first electromagnet is extended or retracted to control the first clutch to make the first gear and the second gear cooperate or separate, and the second electromagnet is extended or retracted to control the second clutch to cooperate or separate.

[0006] By adopting the technical scheme, when the electrically-operated drawer is in and out, the motor shaft of the driving motor rotates, the first electromagnet is electrified to extend the first spring clamp acting on the first clutch, the first clutch is in the linkage state, the motor shaft drives the first gear and the second gear to rotate, the second gear drives the third gear on the transmission shaft to rotate, the third gear drives the fourth gear to rotate, and then drives the drawer transmission screw to rotate, realizing the in and out of the drawer, while the drawer is in and out, the second electromagnet is de-energized, the second clutch is in the separated state, the fifth gear is idling, and the opening and closing operation shaft does not rotate; when the electrically-operated circuit breaker is in and out, the motor shaft of the driving motor rotates, the first electromagnet is electrified to extend the second spring clamp acting on the second clutch, the second clutch is in the linkage state, when the motor shaft drives the first gear to rotate, the first gear drives the fifth gear to rotate, the fifth gear drives the linkage disc to rotate, and then drives the opening and closing operation shaft to rotate, realizing the in and out of the circuit breaker, while the circuit breaker is in and out, the first electromagnet is de-energized, the first clutch is in the separated state, and the second gear does not rotate, so that the drawer transmission screw does not rotate. The design realizes the electrically-operated drawer in and out and the electrically-operated circuit breaker in and out by a single motor, which greatly reduces the occupied space of the structure and significantly reduces the production cost.

[0007] The drawer transmission screw and the opening and closing operation shaft are respectively provided with a first operation hole and a second operation hole for inserting a handle.

[0008] By adopting the technical scheme, the drawer transmission screw is manually operated to realize the in and out of the drawer, and the opening and closing operation shaft is manually operated to realize the in and out of the circuit breaker.

[0009] The shell is further provided with a baffle slidingly arranged on the shell and a manually-operated micro switch electrically connected with the driving motor, one end of the baffle abuts against the elastic sheet of the manually-operated micro switch, and the other end of the baffle extends to the front of the first operation hole of the drawer transmission screw; when the handle is inserted into the first operation hole, the baffle slides and triggers the manually-operated micro switch, so that the driving motor does not work.

[0010] By adopting the technical scheme, when the drawer is manually operated to be in and out, the background terminal cannot operate the driving motor to work, and the operation safety is improved.

[0011] The shell is further provided with a first cam, a latch plate and a tension spring, the first cam is linked and installed on the opening and closing operation shaft, the latch plate is slidingly arranged on the shell in the vertical direction, one end of the tension spring is connected with the shell, and the other end of the tension spring is connected with the latch plate; when the opening and closing operation shaft is in the closing operation, the first cam rotates and drives the latch plate to move downward to be inserted into the bottom plate of the circuit breaker drawer, and when the opening and closing operation shaft is in the opening operation, the first cam returns, and the latch plate returns upward under the action of the tension spring.

[0012] By adopting the above technical solution, a mechanical closing interlocking structure is provided to ensure that the drawer cannot be electrically swung out when the circuit breaker is in the closed state.

[0013] The present invention is further configured such that a locking plate is vertically slidably provided on the shell, one end of the locking plate is provided with a supporting bend, and the supporting bend is overlapped on the latch plate. When the latch plate moves upward, the latch plate drives the locking plate upward. When the latch plate moves downward, the locking plate moves downward by its own gravity and blocks the first operating hole of the drawer drive screw.

[0014] By adopting the above technical solution, when the circuit breaker is in the closed state, the locking plate falls to block the first operating hole of the drawer drive screw, preventing the handle from being inserted in the working position, thereby having a double protection function.

[0015] The present invention is further configured such that a micro switch for opening and a micro switch for closing are also provided on the shell, the micro switch for opening and the micro switch for closing are electrically connected to the drive motor, a second cam is linked to the opening and closing operating shaft, and the second cam has a first position for triggering the micro switch for opening and a second position for triggering the micro switch for closing when the opening and closing operating shaft rotates.

[0016] By adopting the above technical solution, when the opening and closing operating shaft rotates to the closing limit position and the opening limit position, the drive motor stops working in time, thereby accurately controlling the closing and opening of the circuit breaker.

[0017] The present invention is further configured such that an indicator shaft is rotatably connected to the shell, a sixth gear is linked to the transmission shaft, a seventh gear is linked to the indicator shaft, the sixth gear and the seventh gear are meshed with each other, a status indicator plate is provided at the front end of the indicator shaft, and a pointer pointing to the status indicator plate is provided on the shell.

[0018] By adopting the above technical solution, it is convenient for staff to judge the position of the drawer and swing the drawer in when the drawer is in a separated state.

[0019] The present application is further provided to further comprise a positioning wheel, a positioning spring piece, a separation micro switch, a connection micro switch, a separation spring piece and a connection spring piece, the positioning wheel is circumferentially linked and installed on the indicating shaft, the positioning spring piece comprises an arc-shaped positioning protrusion in the middle, elastic arms symmetrically arranged at both ends of the arc-shaped positioning protrusion, and clamping portions respectively arranged at the ends of the two elastic arms, the shell is provided with two clamping holes respectively for inserting the clamping portions, the arc-shaped positioning protrusion abuts against the outer periphery of the positioning wheel, and the positioning wheel is provided with a first positioning recess for matching the arc-shaped positioning protrusion when the drawer is separated and a second positioning recess for matching the arc-shaped positioning protrusion when the drawer is connected; the separation micro switch and the connection micro switch are installed on the shell and electrically connected with the driving motor, the separation spring piece and the connection spring piece are respectively installed on the shell at positions in front of the separation micro switch and the connection micro switch through fasteners, the ends of the separation spring piece and the connection spring piece are respectively provided with a separation follow-up block and a connection follow-up block, one end surface of the positioning wheel is provided with an annular accommodation groove for the separation follow-up block and the connection follow-up block to extend into, the annular accommodation groove is provided with an arc-shaped trigger block, when the drawer is separated to the position, the arc-shaped trigger block pushes the separation follow-up block, causes the separation spring piece to deform, and triggers the separation micro switch to cause the driving motor to stop working, when the drawer is connected to the position, the arc-shaped trigger block pushes the connection follow-up block, causes the connection spring piece to deform, and triggers the connection micro switch to cause the driving motor to stop working.

[0020] By adopting the above technical scheme, the two spring pieces cooperate with the positioning wheel, which can cause the positioning wheel to accurately trigger the micro switch when the positioning wheel cooperates with the two micro switches, and the situation of not reaching the position or overrunning does not occur, so as to accurately control the motor to stop working when the drawer is in place, the structure is very reliable, and in addition, the positioning structure can also accurately realize the indication of the pointer to the indicating plate.

[0021] The present invention is further configured as follows: the first clutch includes a first clutch plate, a first spring clip and a plurality of first clutch balls; the outer periphery of the motor shaft of the driving motor is rotatably provided with a first shaft sleeve; the second gear is rotatably provided on the upper end of the first shaft sleeve; the first clutch plate is rotatably provided on the outer periphery of the first shaft sleeve; the upper end of the first gear is provided with a plurality of first upper conical grooves corresponding to the number of the first clutch balls; the lower end of the first clutch plate is provided with a plurality of first lower conical grooves adapted to the first upper conical grooves; part of the first clutch ball is provided in the first lower conical groove; the other part of the first clutch ball is provided in the first upper conical groove; the upper end of the first clutch plate is provided with a plurality of first upper conical grooves corresponding to the number of the first clutch balls; There are multiple first clutch protrusions, and the lower end of the second gear is provided with multiple first clutch grooves for matching with the first clutch protrusions. The outer periphery of the first clutch disk is also provided with a first annular groove, and the first spring clip is provided on the outer periphery of the first annular groove, and the first spring clip is provided with a first protrusion limiting portion for matching with the first electromagnet; when the first electromagnet extends to limit the first protrusion limiting portion of the first spring clip, the first clutch ball drives the first clutch disk to move toward the direction close to the second gear until the first clutch protrusion on the first clutch disk fits with the first clutch groove on the second gear, so that the first gear and the second gear rotate synchronously.

[0022] By adopting the above technical solution, the clutch control of the first gear and the second gear can be achieved through the cooperation of the first electromagnet and the first clutch. The control structure is simple and ingenious, which is conducive to assembly and production.

[0023] The present invention is further configured as follows: the second clutch includes a second clutch disc, a second spring clip and a plurality of second clutch balls; a second sleeve is rotatably provided on the outer periphery of the separation and connection operating shaft; the fifth gear is rotatably provided on the lower end of the second sleeve; the second clutch disc is rotatably provided on the outer periphery of the second sleeve; the upper end of the fifth gear is provided with a plurality of second upper conical grooves corresponding to the number of the second clutch balls; the lower end of the second clutch disc is provided with a plurality of second lower conical grooves adapted to the second upper conical grooves; part of the second clutch ball is provided in the second lower conical groove; the other part of the second clutch ball is provided in the second upper conical groove; the upper end of the second clutch disc is provided with a plurality of The second clutch protrusion, the lower end of the linkage disk is provided with a plurality of second clutch grooves for matching with the second clutch protrusion, the outer periphery of the second clutch disk is also provided with a second annular groove, the second spring clip is arranged on the outer periphery of the second annular groove, and the second spring clip is provided with a second protrusion limiting portion for matching with the second electromagnet; when the second electromagnet extends to limit the second protrusion limiting portion of the second spring clip, the second clutch ball drives the second clutch disk to move toward the direction approaching the linkage disk until the second clutch protrusion on the second clutch disk is matched with the second clutch groove on the linkage disk, so that the fifth gear, the linkage disk and the separation and combination operating shaft rotate synchronously.

[0024] By adopting the above technical solution, the clutch control of the fifth gear and the linkage plate can be achieved through the cooperation of the second electromagnet and the second clutch, thereby controlling the rotation or stop of the separation and connection operating shaft. The control structure is simple and ingenious, which is conducive to assembly and production. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A first perspective view of the present invention as a whole; Figure 2 This is a schematic diagram of the structure of the present invention after the shell is removed; Figure 3 Schematic diagram of the matching structure between the baffle and the drawer drive screw of the present invention; Figure 4 Schematic diagram of the installation structure of the latch plate and the locking plate of the present invention; Figure 5 A second perspective view of the present invention as a whole; Figure 6 Schematic diagram of the transmission structure of the transmission shaft and the indicator shaft of the present invention; Figure 7 A first perspective view of the structure of the indicator portion of the present invention; Figure 8 A second perspective view of the structure of the indicator portion of the present invention; Figure 9 Schematic diagram of the matching structure of the positioning wheel and the positioning spring of the present invention; Figure 10 Schematic diagram of the coordination structure between the positioning wheel and two spring pieces of the present invention; Figure 11 Schematic diagram of the installation structure of the first clutch of the present invention; Figure 12 for Figure 11 Cross-sectional view of the structure; Figure 13 Schematic diagram of the installation structure of the second clutch of the present invention; Figure 14 for Figure 13 Cross-sectional view of the structure.

[0026] In the figure: 1, housing; 2, driving motor; 3, drawer transmission screw; 4, opening and closing operation shaft; 5, transmission shaft; 6, motor shaft; 7, first gear; 8, second gear; 9, first clutch; 10, third gear; 11, fourth gear; 12, linkage disc; 13, fifth gear; 14, second clutch; 15, first electromagnet; 16, second electromagnet; 17, first operation hole; 18, second operation hole; 19, baffle; 20, manual operation micro switch; 21, first cam; 22, latch plate; 23, tension spring; 24, drop lock plate; 25, support bend; 26, opening micro switch; 27, closing micro switch; 28, second cam; 29, indication shaft; 30, sixth gear; 31, seventh gear; 32, state indication plate; 33, pointer; 34, positioning wheel; 35, positioning leaf; 36, separation micro switch; 37, connection micro switch; 39, separation spring leaf; 40, connection spring leaf; 41, arc-shaped positioning protrusion; 42, elastic arm; 43, clamping part; 44, bayonet; 45, first positioning recess; 46, second positioning recess; 47, separation follow-up block; 48, connection follow-up block; 49, annular accommodation groove; 50, arc-shaped trigger block; 51, first clutch disc; 52, first spring clamp; 53, first clutch ball; 54, first shaft sleeve; 55, first upper taper groove; 56, first lower taper groove; 57, first clutch protrusion; 58, first clutch recess; 59, first annular groove; 60, first protrusion limiting part; 61, second clutch disc; 62, second spring clamp; 63, second clutch ball; 64, second shaft sleeve; 65, second upper taper groove; 66, second lower taper groove; 67, second clutch protrusion; 68, second clutch recess; 69, second annular groove; 70, second protrusion limiting part. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0028] Embodiment: as shown in the accompanying drawings Figures 1 to 14The device for the drawer of a single motor controlled circuit breaker to enter and exit and the electric closing and opening of the device is shown, including a shell 1, the shell 1 is provided with a driving motor 2, a drawer transmission screw rod 3, a closing and opening operation shaft 4 and a transmission shaft 5, the driving motor 2 can be controlled by a background terminal, such as a PLC controller, the motor shaft 6 of the driving motor 2 is provided with a first gear 7 and a second gear 8 in linkage, that is, the first gear 7 and the motor shaft 6 realize the circumferential synchronous rotation through the non-circular section cooperation, the second gear 8 and the motor shaft 6 realize the rotation of the second gear 8 on the motor shaft 6 through the circular section cooperation, the first gear 7 and the second gear 8 are matched through a first clutch 9, the transmission shaft 5 is provided with a third gear 10 in linkage, the third gear 10 is engaged with the second gear 8, the drawer transmission screw rod 3 is provided with a fourth gear 11 engaged with the third gear 10, the closing and opening operation shaft 4 is provided with a linkage disc 12 in linkage and a fifth gear 13 in rotation, that is, the linkage disc 12 and the closing and opening operation shaft 4 realize the synchronous rotation through the non-circular section cooperation, the fifth gear 13 and the closing and opening operation shaft 4 realize the rotation of the fifth gear 13 on the closing and opening operation shaft 4 through the circular section cooperation, the fifth gear 13 is engaged with the first gear 7, the linkage disc 12 is matched with the fifth gear 13 through a second clutch 14; the shell 1 is further provided with a first electromagnet 15 and a second electromagnet 16, the first electromagnet 15 is extended or retracted for controlling the first clutch 9 to promote the first gear 7 and the second gear 8 to cooperate or separate, the second electromagnet 16 is extended or retracted for controlling the second clutch 14 to cooperate or separate. When the drawer enters and exits, the motor shaft 6 of the driving motor 2 rotates, the first electromagnet 15 is energized to extend and act on the first spring clamp of the first clutch 9, promoting the first clutch 9 to be in linkage state, the motor shaft 6 drives the first gear 7 and the second gear 8 to rotate, the second gear 8 drives the third gear 10 on the transmission shaft 5 to rotate, the third gear 10 drives the fourth gear 11 to rotate, and then drives the drawer transmission screw rod 3 to rotate, realizing the entry and exit of the drawer, while the drawer enters and exits, the second electromagnet 16 is de-energized, the second clutch 14 is in a separated state, the fifth gear 13 idles, and the closing and opening operation shaft 4 does not rotate; when the circuit breaker is electrically operated to open and close, the motor shaft 6 of the driving motor 2 rotates, the first electromagnet 15 is energized to extend and act on the second spring clamp of the second clutch 14, promoting the second clutch 14 to be in linkage state, when the motor shaft 6 drives the first gear 7 to rotate, the first gear 7 drives the fifth gear 13 to rotate, the fifth gear 13 drives the linkage disc 12 to rotate, and then promotes the closing and opening operation shaft 4 to rotate, realizing the opening and closing operation of the circuit breaker, while the circuit breaker is operated to open and close, the first electromagnet 15 is de-energized, the first clutch 9 is in a separated state, the second gear 8 does not rotate, so that the drawer transmission screw rod 3 does not rotate. The design realizes the electric pushing in and out of the circuit breaker drawer and the electric closing and opening of the circuit breaker through a single motor, not only greatly reduces the occupied space of the structure, but also significantly reduces the production cost.

[0029] As shown in the accompanying drawings Figure 1 The front end of the drawer transmission screw 3 and the on-off operation shaft 4 is respectively provided with a first operation hole 17 and a second operation hole 18 for inserting a handle, which are both square hole structures in this embodiment. This design facilitates manual operation of the drawer transmission screw 3 for drawer in-out and manual operation of the on-off operation shaft 4 for breaker opening and closing.

[0030] As shown in the accompanying drawings Figure 3 A baffle 19 is slidably arranged on the shell 1, and a first sliding hole extending transversely can be arranged on the baffle 19. Two pins are installed on the shell, and the two pins pass through the first sliding hole, and the pin head is limited. A manual operation micro switch 20 electrically connected with the driving motor 2 is further arranged on the shell 1. One end of the baffle 19 abuts against the spring sheet of the manual operation micro switch 20, and the other end of the baffle 19 extends to the front of the first operation hole 17 of the drawer transmission screw 3. When the handle is inserted into the first operation hole 17, the baffle 19 slides and triggers the manual operation micro switch 20, and the manual operation micro switch 20 sends a signal to the background terminal, and the background terminal controls the driving motor 2 not to work. This design can prevent the background terminal from operating the driving motor 2 when manually operating the drawer in-out, thereby improving the operation safety.

[0031] As shown in the accompanying drawings Figure 4 Further comprising a first cam 21, a latch plate 22 and a tension spring 23. The first cam 21 is circumferentially linked and installed on the on-off operation shaft 4. The latch plate 22 is vertically slidably arranged on the shell 1. A second sliding hole extending vertically can be arranged on the shell 1. Two pins are arranged on the latch plate 22, and the two pins pass through the second sliding hole, and the pin head is limited. One end of the tension spring 23 is connected with the shell 1, and the other end of the tension spring 23 is connected with the latch plate 22. A hole is arranged on the shell 1 for hooking one end of the tension spring 23, and a screw is arranged on the latch plate 22 for hooking the other end of the tension spring 23. When the on-off operation shaft 4 is closed, the first cam 21 rotates and pushes the latch plate 22 downward to insert into the bottom plate of the breaker drawer. When the on-off operation shaft 4 is opened, the first cam 21 resets, and the latch plate 22 resets upward under the action of the tension spring 23. This is a mechanical closing interlocking structure, which ensures that the drawer cannot be manually opened when the breaker is closed.

[0032] As shown in the accompanying drawings Figure 4As shown, a locking plate 24 is provided on the housing 1 for vertical sliding. A third sliding hole extending vertically can be provided on the housing 1. Two pins are provided on the locking plate 24. The two pins pass through the third sliding hole, and the pin heads are used for position limiting. One end of the locking plate 24 is provided with a support bend 25. The support bend 25 overlaps the latch plate 22, specifically the upper end of the screw of the latch plate 22. When the latch plate 22 moves upward, the latch plate 22 drives the locking plate 24 upward. When the latch plate 22 moves downward, the locking plate 24 descends under its own weight and blocks the first operating hole 17 of the drawer drive screw 3. When the circuit breaker is in the closed state, the locking plate 24 falls to block the first operating hole 17 of the drawer drive screw 3, preventing the handle from being inserted in the working position, providing a double protection function.

[0033] As attached Figure 5 As shown, the housing 1 is further provided with an opening microswitch 26 and a closing microswitch 27. The opening microswitch 26 and the closing microswitch 27 are electrically connected to the drive motor 2. Specifically, when the opening microswitch 26 and the closing microswitch 27 are triggered, they send a signal to the background terminal, which then sends a corresponding instruction to the drive motor 2 to control it to stop based on the signal. The opening and closing operating shaft 4 is linked to a second cam 28. When the second cam 28 rotates with the opening and closing operating shaft 4, it has a first position for triggering the opening microswitch 26 and a second position for triggering the closing microswitch 27. When the opening and closing operating shaft 4 rotates to the closing limit position and the opening limit position, the drive motor 2 stops working in time, thereby accurately controlling the closing and opening of the circuit breaker.

[0034] As attached Figure 1 and attached Figure 6 As shown, the housing 1 is rotatably connected to an indicator shaft 29, the transmission shaft 5 is interlockedly connected to a sixth gear 30, and the indicator shaft 29 is interlockedly connected to a seventh gear 31. The sixth gear 30 and the seventh gear 31 are meshed, and the sixth gear 30 has fewer teeth than the third gear 10 and the seventh gear 31. A status indicator plate 32 is provided at the front end of the indicator shaft 29. The status indicator plate 32 is provided with three status indicators: "disconnected," "connected," and "testing." A pointer 33 pointing to the status indicator plate 32 is provided on the housing 1. This design makes it easier for staff to determine the position of the drawer; when the drawer is in the disconnected state, it can be rocked in.

[0035] As attached Figures 7 to 10As shown, the device further comprises a positioning wheel 34, a positioning spring piece 35, a separation micro switch 36, a connection micro switch 37, a separation elastic piece 39 and a connection elastic piece 40. The positioning wheel 34 is circumferentially connected to the indicating shaft 29. The positioning spring piece 35 comprises an arc-shaped positioning protrusion 41 in the middle, elastic arms 42 symmetrically arranged at both ends of the arc-shaped positioning protrusion 41, and clamping portions 43 arranged at the ends of the two elastic arms 42 respectively. Two clamping holes 44 are arranged on the shell 1 for the clamping portions 43 to be inserted into respectively. The arc-shaped positioning protrusion 41 abuts against the outer periphery of the positioning wheel 34. The positioning wheel 34 is provided with a first positioning recess 45 for engaging with the arc-shaped positioning protrusion 41 when the drawer is separated, and a second positioning recess 46 for engaging with the arc-shaped positioning protrusion 41 when the drawer is connected. The separation micro switch 36 and the connection micro switch 37 are mounted on the shell 1 and electrically connected with the driving motor 2. Specifically, when the separation micro switch 36 and the connection micro switch 37 are triggered, signals will be sent to the background terminal, and the background terminal will send corresponding instructions to the driving motor 2 to control it to stop according to the signals. The separation elastic piece 39 and the connection elastic piece 40 are mounted on the shell 1 by fasteners at positions in front of the separation micro switch 36 and the connection micro switch 37 respectively. The ends of the separation elastic piece 39 and the connection elastic piece 40 are respectively provided with a separation follow-up block 47 and a connection follow-up block 48. One end surface of the positioning wheel 34 is provided with an annular accommodation slot 49 for the separation follow-up block 47 and the connection follow-up block 48 to extend into. The annular accommodation slot 49 is provided with an arc-shaped trigger block 50. When the drawer is separated to the position, the arc-shaped trigger block 50 pushes the separation follow-up block 47, causing the separation elastic piece 39 to deform, and triggering the separation micro switch 36 to cause the driving motor 2 to stop working. When the drawer is connected to the position, the arc-shaped trigger block 50 pushes the connection follow-up block 48, causing the connection elastic piece 40 to deform, and triggering the connection micro switch 37 to cause the driving motor 2 to stop working. The two elastic pieces cooperate with the positioning wheel 34 to cause the positioning wheel 34 to accurately trigger the micro switches when cooperating with the two micro switches, without the situation of not reaching the position or over-traveling, thereby accurately controlling the motor to stop working when the drawer is in position, and the structure is very reliable. In addition, the positioning structure can also accurately realize the indication of the pointer 33 to the indicating plate.

[0036] As shown in the accompanying drawings Figure 11 and the accompanying drawings Figure 12As shown, the first clutch 9 includes a first clutch disc 51, a first spring clamp 52, and a plurality of first clutch balls 53. The motor shaft 6 of the driving motor 2 is provided with a first shaft sleeve 54. The second gear 8 is rotatably arranged on the upper end of the first shaft sleeve 54. A first step can be arranged on the upper end of the first shaft sleeve 54. A limiting nut is threadedly connected to the motor shaft 6. The limiting nut limits the second gear 8 on the second step. The first clutch disc 51 is rotatably arranged on the outer periphery of the first shaft sleeve 54. The upper end of the first gear 7 is provided with a plurality of first upper tapered grooves 55, the number of which is equal to that of the first clutch balls 53. The lower end of the first clutch disc 51 is provided with a plurality of first lower tapered grooves 56, which are matched with the first upper tapered grooves 55. Part of the first clutch balls 53 is arranged in the first lower tapered grooves 56, and the other part of the first clutch balls 53 is arranged in the first upper tapered grooves 55. The upper end of the first clutch disc 51 is provided with a plurality of first clutch protrusions 57. The lower end of the second gear 8 is provided with a plurality of first clutch grooves 58, which are matched with the first clutch protrusions 57. The outer periphery of the first clutch disc 51 is further provided with a first annular groove 59. The first spring clamp 52 is clamped on the outer periphery of the first annular groove 59. The first spring clamp 52 is provided with a first protrusion limiting portion 60, which is matched with the first electromagnet 15. When the first electromagnet 15 extends to limit the first protrusion limiting portion 60 of the first spring clamp 52, the first clutch balls 53 drive the first clutch disc 51 to move towards the second gear 8. The first clutch balls 53 are always not separated from the first upper tapered grooves 55 and the first lower tapered grooves 56, until the first clutch protrusions 57 on the first clutch disc 51 are matched with the first clutch grooves 58 on the second gear 8, so that the first gear 7 and the second gear 8 are synchronously rotated. The clutch control of the first gear 7 and the second gear 8 can be realized by the cooperation of the first electromagnet 15 and the first clutch 9. The control structure is simple and ingenious, and is beneficial to assembly and production.

[0037] As shown in the accompanying drawings Figure 13 and the accompanying drawings Figure 14As shown, the second clutch 14 includes a second clutch disc 61, a second spring clamp 62, and a plurality of second clutch balls 63. The split and combination operation shaft 4 is provided with a second shaft sleeve 64 at the outer periphery thereof. The fifth gear 13 is rotatably arranged at the lower end of the second shaft sleeve 64. The second clutch disc 61 is rotatably arranged at the outer periphery of the second shaft sleeve 64. The fifth gear 13 is provided with a plurality of second upper tapered grooves 65 at the upper end thereof, the number of which is equal to that of the second clutch balls 63. The second clutch disc 61 is provided with a plurality of second lower tapered grooves 66 at the lower end thereof, which are adapted to the second upper tapered grooves 65. The second upper tapered grooves 65 and the second lower tapered grooves 66 are both conical in shape. The second clutch balls 63 are partially arranged in the second lower tapered grooves 66 and the other part of the second clutch balls 63 are arranged in the second upper tapered grooves 65. The second clutch disc 61 is provided with a plurality of second clutch protrusions 67 at the upper end thereof. The linkage disc 12 is provided with a plurality of second clutch grooves 68 at the lower end thereof, which are adapted to the second clutch protrusions 67. The second clutch disc 61 is further provided with a second annular groove 69 at the outer periphery thereof. The second spring clamp 62 is clamped at the outer periphery of the second annular groove 69, and the second spring clamp 62 is provided with a second protrusion limiting portion 70 which is adapted to the second electromagnet 16. When the second electromagnet 16 extends out and limits the second protrusion limiting portion 70 of the second spring clamp 62, the second clutch balls 63 drive the second clutch disc 61 to move towards the linkage disc 12, and the second clutch balls 63 will not be separated from the second upper tapered grooves 65 and the second lower tapered grooves 66 at all times, until the second clutch protrusions 67 on the second clutch disc 61 are matched with the second clutch grooves 68 on the linkage disc 12, so that the fifth gear 13, the linkage disc 12, and the split and combination operation shaft 4 are synchronously rotated. The clutch control of the fifth gear 13 and the linkage disc 12 can be realized through the cooperation of the second electromagnet 16 and the second clutch 14, thereby controlling the rotation or stop of the split and combination operation shaft 4. The control structure is simple and ingenious, and is beneficial to assembly and production.

Claims

1. A device for controlling the entry and exit of a circuit breaker drawer and the electric closing and opening of the circuit breaker by a single motor, characterized by: The invention comprises a housing (1), wherein the housing (1) is provided with a driving motor (2), a drawer transmission screw (3), a separation and combination operating shaft (4) and a transmission shaft (5); a first gear (7) is linked and installed on the motor shaft (6) of the driving motor (2) and a second gear (8) is rotatably installed; the first gear (7) and the second gear (8) are matched through a first clutch (9); a third gear (10) meshing with the second gear (8) is linked and installed on the transmission shaft (5); the drawer transmission screw (3) is provided with a fourth gear (11) meshing with the third gear (10); the separation and combination operating shaft (4) and the transmission shaft (5) are ... separation and combination operating shaft (4) are provided with a fourth gear A linkage disk (12) and a fifth gear (13) are rotatably mounted on the working shaft (4); the fifth gear (13) is meshed with the first gear (7); the linkage disk (12) is matched with the fifth gear (13) through a second clutch (14); a first electromagnet (15) and a second electromagnet (16) are also provided on the housing (1); the first electromagnet (15) is extended or retracted to control the first clutch (9) to force the first gear (7) and the second gear (8) to engage or disengage; the second electromagnet (16) is extended or retracted to control the second clutch (14) to engage or disengage.

2. A device for controlling the entry and exit of a circuit breaker drawer and electric closing and opening by a single motor according to claim 1, characterized in that: The front ends of the drawer transmission screw (3) and the opening and closing operating shaft (4) are respectively provided with a first operating hole (17) and a second operating hole (18) for inserting a handle.

3. A device for controlling the entry and exit of a circuit breaker drawer and electric closing and opening by a single motor according to claim 2, characterized in that: A baffle (19) is slidably provided on the housing (1), and a manually operated micro switch (20) electrically connected to the drive motor (2) is also provided on the housing (1). One end of the baffle (19) abuts against a spring of the manually operated micro switch (20), and the other end of the baffle (19) extends to the front of the first operating hole (17) of the drawer drive screw (3). When the handle is inserted into the first operating hole (17), the baffle (19) slides and triggers the manually operated micro switch (20), so that the drive motor (2) does not work.

4. The device for controlling the entry and exit of a circuit breaker drawer and electric closing and opening by a single motor according to claim 1, characterized in that: The invention also includes a first cam (21), a latch plate (22) and a tension spring (23), wherein the first cam (21) is mounted on the opening and closing operating shaft (4) in a linkage manner, the latch plate (22) is arranged on the housing (1) in a vertical sliding manner, one end of the tension spring (23) is connected to the housing (1), and the other end of the tension spring (23) is connected to the latch plate (22); when the opening and closing operating shaft (4) is closed, the first cam (21) rotates and moves the latch plate (22) downward so that it is inserted under the bottom plate of the circuit breaker drawer; when the opening and closing operating shaft (4) is opened, the first cam (21) returns to its original position, and at the same time, the latch plate (22) returns to its original position upward under the action of the tension spring (23).

5. The device for controlling the entry and exit of a circuit breaker drawer and electric closing and opening by a single motor according to claim 4, characterized in that: A locking plate (24) is vertically slidably provided on the housing (1), and a supporting bend (25) is provided at one end of the locking plate (24). The supporting bend (25) is overlapped on the latch plate (22). When the latch plate (22) moves upward, the latch plate (22) drives the locking plate (24) upward. When the latch plate (22) moves downward, the locking plate (24) moves downward by its own weight and blocks the first operating hole (17) of the drawer drive screw (3).

6. The device for controlling the entry and exit of a circuit breaker drawer and electric closing and opening by a single motor according to claim 1, characterized in that: The housing (1) is further provided with an opening micro switch (26) and a closing micro switch (27), the opening micro switch (26) and the closing micro switch (27) being electrically connected to the drive motor (2), and the opening and closing operating shaft (4) is linked with a second cam (28), and the second cam (28) has a first position for triggering the opening micro switch (26) and a second position for triggering the closing micro switch (27) when the opening and closing operating shaft (4) rotates.

7. The device for controlling the entry and exit of a circuit breaker drawer and electric closing and opening by a single motor according to claim 1, characterized in that: The housing (1) is rotatably connected to an indicating shaft (29), the transmission shaft (5) is linked to a sixth gear (30), the indicating shaft (29) is linked to a seventh gear (31), the sixth gear (30) and the seventh gear (31) are meshed, a state indicating plate (32) is provided at the front end of the indicating shaft (29), and a pointer (33) pointing to the state indicating plate (32) is provided on the housing (1).

8. The device for controlling the entry and exit of a circuit breaker drawer and electric closing and opening by a single motor according to claim 7, characterized in that: The invention also includes a positioning wheel (34), a positioning spring (35), a separation micro switch (36), a connection micro switch (37), a separation spring (39) and a connection spring (40), wherein the positioning wheel (34) is mounted on the indicating shaft (29) in a circumferentially linked manner, and the positioning spring (35) includes an arc-shaped positioning protrusion (41) located in the middle, elastic arms (42) symmetrically arranged at both ends of the arc-shaped positioning protrusion (41), and clamping parts (43) respectively arranged at the ends of the two elastic arms (42). (1) is provided with two bayonet holes (44) for inserting corresponding clamping parts (43), the arc-shaped positioning protrusion (41) is in contact with the outer periphery of the positioning wheel (34), and the positioning wheel (34) is provided with a first positioning recess (45) for fitting with the arc-shaped positioning protrusion (41) when the drawer is in a separated state and a second positioning recess (46) for fitting with the arc-shaped positioning protrusion (41) when the drawer is in a connected state; the separation micro switch (36) and the connection micro switch (37) are installed on the housing (1 ) and is electrically connected to the drive motor (2), the separation spring piece (39) and the connection spring piece (40) are respectively installed on the housing (1) at positions corresponding to the front of the separation micro switch (36) and the connection micro switch (37) through fasteners, and the ends of the separation spring piece (39) and the connection spring piece (40) are respectively provided with a separation follower block (47) and a connection follower block (48), and one end surface of the positioning wheel (34) is provided with a ring-shaped spacer for the separation follower block (47) and the connection follower block (48) to extend into. A groove (49) is provided in the annular give way groove (49). An arc-shaped trigger block (50) is provided in the annular give way groove (49). When the drawer is separated into place, the arc-shaped trigger block (50) pushes the separation follower block (47), causing the separation spring (39) to deform and triggering the separation micro switch (36) to stop the driving motor (2). When the drawer is connected into place, the arc-shaped trigger block (50) pushes the connection follower block (48), causing the connection spring (40) to deform and triggering the connection micro switch (37) to stop the driving motor (2).

9. The device for controlling the entry and exit of a circuit breaker drawer and electric closing and opening by a single motor according to claim 1, characterized in that: The first clutch (9) comprises a first clutch disc (51), a first spring clip (52) and a plurality of first clutch balls (53); a first sleeve (54) is rotatably provided on the outer periphery of the motor shaft (6) of the drive motor (2); the second gear (8) is rotatably provided on the upper end of the first sleeve (54); the first clutch disc (51) is rotatably provided on the outer periphery of the first sleeve (54); the upper end of the first gear (7) is provided with a plurality of first upper conical grooves (55) whose number is equal to that of the first clutch balls (53); the lower end of the first clutch disc (51) is provided with a plurality of first lower conical grooves (56) adapted to the first upper conical grooves (55); a portion of the first clutch balls (53) is provided in the first lower conical grooves (56); the other portion of the first clutch balls (53) is provided in the first upper conical grooves (55); the upper end of the first clutch disc (51) is provided with a plurality of first clutch balls (53); The first clutch disc (51) is provided with a plurality of first clutch grooves (58) for matching with the first clutch protrusions (57), and the outer periphery of the first clutch disc (51) is also provided with a first annular groove (59). The first spring clip (52) is clamped on the outer periphery of the first annular groove (59), and the first spring clip (52) is provided with a first protruding limiting portion (60) for matching with the first electromagnet (15); when the first electromagnet (15) extends to limit the first protruding limiting portion (60) of the first spring clip (52), the first clutch ball (53) drives the first clutch disc (51) to move toward the second gear (8) until the first clutch protrusion (57) on the first clutch disc (51) is matched with the first clutch groove (58) on the second gear (8), so that the first gear (7) and the second gear (8) rotate synchronously.

10. The device for controlling the entry and exit of a circuit breaker drawer and electric closing and opening by a single motor according to claim 1, characterized in that: The second clutch (14) includes a second clutch disc (61), a second spring clip (62) and a plurality of second clutch balls (63); a second sleeve (64) is rotatably provided on the outer periphery of the separation and connection operating shaft (4); the fifth gear (13) is rotatably provided on the lower end of the second sleeve (64); the second clutch disc (61) is rotatably provided on the outer periphery of the second sleeve (64); the upper end of the fifth gear (13) is provided with a plurality of second upper conical grooves (65) whose number is equivalent to the second clutch balls (63); the lower end of the second clutch disc (61) is provided with a plurality of second lower conical grooves (66) adapted to the second upper conical grooves (65); a portion of the second clutch balls (63) is provided in the second lower conical grooves (66); another portion of the second clutch balls (63) is provided in the second upper conical grooves (65); the upper end of the second clutch disc (61) is provided with a plurality of second clutch protrusions (67); The lower end of the linkage disk (12) is provided with a plurality of second clutch grooves (68) for matching with the second clutch protrusion (67); the outer periphery of the second clutch disk (61) is further provided with a second annular groove (69); the second spring clip (62) is clamped on the outer periphery of the second annular groove (69), and the second spring clip (62) is provided with a second protruding limiting portion (70) for matching with the second electromagnet (16); when the second electromagnet (16) extends to limit the second protruding limiting portion (70) of the second spring clip (62), the second clutch ball (63) drives the second clutch disk (61) to move toward the linkage disk (12) until the second clutch protrusion (67) on the second clutch disk (61) is matched with the second clutch groove (68) on the linkage disk (12), so that the fifth gear (13), the linkage disk (12) and the separation and combination operating shaft (4) rotate synchronously.

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