Remote control electric switch-on and switch-off and drawer shake-in and shake-out device

Abstract

The invention discloses a remote control electric switching-on and switching-off and drawer shaking-in and shaking-out device, and belongs to the technical field of drawer cabinets. Comprising a manual crank and an operating handle, and further comprises a seat body, a power unit, a pressing belt assembly, a transition adaptation unit, a circuit breaker transmission assembly and a drawer transmission assembly, and the seat body is fixed on a frame in a drawer cabinet; a hole array is formed in the seat body; the power unit is fixed on the seat body, and the power unit is in communication connection with the remote control end through the controller; the power unit comprises a double-worm-gear speed reducer, and the input end of the double-worm-gear speed reducer is connected to a driving motor; according to the remote control electric switching-on and switching-off and drawer shaking-in and shaking-out device, switching-on and switching-off of a circuit breaker and shaking-in and shaking-out of a drawer unit can be controlled on site or remotely, mechanical interlocking between the circuit breaker and a drawer cabinet can be achieved, and safety is higher.

Description

Technical Field

[0001] This invention specifically relates to a remote-controlled electric opening and closing device and a drawer rocking-in and rocking-out device, belonging to the field of drawer cabinet technology. Background Technology

[0002] Drawer-type distribution cabinets are enclosed steel-plate enclosures where electrical components for incoming and outgoing circuits are housed in removable drawers. Drawer-type distribution cabinets offer high reliability, safety, and interchangeability. For example, Chinese Patent Publication No. CN107579477B discloses a drawer structure and distribution cabinet that allows for timely acquisition of relevant information without on-site monitoring, enabling energy consumption analysis of power distribution equipment, dynamic monitoring of power load operation, and timely switching operations (closing and opening) and relocation operations. Currently, MNS drawer cabinets on the market achieve remote electric switching functions by adding an electric operating mechanism from the circuit breaker brand (molded case circuit breaker or frame circuit breaker) to the circuit breaker body. This traditional solution has the following significant drawbacks: 1. Complex structure and high cost: It requires the purchase of special electric accessories from specific brands, which are complicated to install and expensive.

[0003] 2. Inconvenient maintenance: The electric mechanism is integrated with the circuit breaker, and troubleshooting and maintenance require operating the entire circuit breaker unit, which is not flexible enough.

[0004] 3. It is prone to misoperation. When there is no electrical control monitoring interlock device or the electrical control monitoring is faulty, it is impossible to achieve interlock between the circuit breaker and the drawer unit. Summary of the Invention

[0005] To address the aforementioned issues, this invention proposes a remote-controlled electric circuit breaker opening and closing device and a drawer rocking-in and rocking-out device, which enables on-site or remote control of the circuit breaker's opening and closing as well as the rocking-in and rocking-out of the drawer unit. Furthermore, it enables mechanical interlocking between the circuit breaker and the drawer cabinet, resulting in enhanced safety.

[0006] The remote-controlled electric circuit breaker opening and closing device of the present invention includes a manual crank handle for driving the drawer in and out, and an operating handle for driving the circuit breaker opening and closing, and further includes: A base, which is fixed to a frame inside the drawer cabinet; the base has a row of holes. The power unit is fixed to the base and is connected to a remote control terminal via a controller. The power unit includes a double worm gear reducer, the input end of which is connected to a drive motor. Both output ends of the double worm gear reducer are fixed with clutches, the input end of which is fixed to the worm gear, and the output end of which is fixed with a drive wheel. The transition adapter unit is provided in two sets. The transition adapter unit includes a first wheel seat fixed on the base, and a pulley is rotatably mounted on the first wheel seat. A transmission belt is sleeved on the pulley, and each of the two transmission belts is sleeved on a drive wheel. A belt pressing assembly includes a second wheel seat fixed to a base, on which a pressure roller is rotatably mounted; the pressure roller is externally pressed onto the drive belt, and a rotation damper is fixed inside the second wheel seat, with the rotating end of the rotation damper fixed to the rotating end of the pressure roller; A circuit breaker drive assembly, the circuit breaker drive assembly including a crank eccentrically fixed to the front end of a pulley, the crank being hinged to one end of a connecting rod, the other end of the connecting rod being hinged to a rocker arm, and the bottom of the rocker arm being fitted and fixed to an operating handle; A drawer drive assembly includes a drive gear fixed to the rear end of a pulley, the drive gear meshing with a transmission gear through multiple reduction gears, and the transmission gear being engaged and fixed with a manual crank handle; the reduction gear is rotatably mounted on the front end of a first wheel seat.

[0007] The remote-controlled electric opening and closing device and drawer rocking-in / rocking-out device of the present invention features an independent electric operating device for the drawer unit. This device is not installed on the circuit breaker body but is independently fixed to the drawer cabinet frame. This device can be coupled with a manual crank and operating handle. When the controller receives a remote electrical signal, its action can drive the circuit breaker handle to simulate manual opening and closing operations and to rock the drawer unit in and out. The original manual operating hole or operating handle is still retained on the panel of the drawer unit. This manual operating component and the built-in device of the present invention are mechanically independent or detachable. In the absence of power or when on-site operation is required, the operator can operate the drawer unit locally and use a dedicated crank or handle to perform opening and closing and rocking-in / rocking-out operations.

[0008] Before use, first fix the power unit to the base. Then, determine the position and distance between the manual crank and the operating handle according to the switchgear model. Next, fix the crank arm to the operating handle and the transmission gear to the manual crank arm. Then, fix the transition adapter unit to the base so that the circuit breaker transmission assembly and the drawer transmission assembly can transmit the driving force to the crank arm and the operating handle. After fixing the position of the transition adapter unit, select a transmission belt that matches the distance between the transition adapter unit and the power unit. Then, put the transmission belt onto the pulley and the drive wheel. Finally, fix the belt pressing assembly to the base so that the pressure wheel and the transmission belt are tensioned. Through the fit of the holes in the transmission belt and the base, and the pressing of the belt by the belt pressing assembly, the positions of the power unit and the transition adapter unit can be matched, completing the installation of the entire device with the switchgear.

[0009] In use, the drawer can be manually cranked in and out, and the circuit breaker can be opened and closed using the operating handle, enabling manual operation. Simultaneously, remote control is also possible as needed. When a control command is issued from the remote control terminal, the controller receives the command and sends it to the dual worm gear reducer and clutch, as detailed below: When electric opening and closing are selected, the corresponding clutches engage, the drive motor drives the worm of the double worm gear reducer to rotate, the worm drives the worm wheel to rotate, and the engaged clutch is driven by the rotation of the worm wheel, synchronously transmitting rotational force to the drive wheel. The drive wheel drives the pulley to rotate synchronously through the transmission belt, the pulley drives the crank to rotate, and the crank drives the rocker arm to swing through the connecting rod. When the rocker arm swings, it drives the operating handle to rotate at a set angle, thereby realizing the operation handle to rotate the circuit breaker to close or open. When the transmission belt is driving, the pressure wheel rotates synchronously, and the pressure wheel is limited by rotational damping. When the drive wheel stops rotating or the clutch disengages, the pressure wheel is limited by rotational damping, which can lock the pressure wheel and prevent the transmission belt from driving.

[0010] When the drawer unit is rocked in or out, the corresponding clutch engages, the drive motor drives the worm of the double worm gear reducer to rotate, the worm drives the worm wheel to rotate, and the engaged clutch is driven by the rotation of the worm wheel, synchronously transmitting the rotational force to the drive wheel. The drive wheel drives another pulley to rotate synchronously through the transmission belt, the drive gear at the pulley rotates synchronously, the drive gear drives the transmission gear to rotate synchronously through multiple reduction gears, and the transmission gear drives the manual crank handle to rotate synchronously, thereby driving the drawer unit to rock in or out.

[0011] Furthermore, a bushing is fixed inside the first wheel seat and the second wheel seat, and a bearing is fitted inside the bushing. A drive shaft is rotatably mounted on the first wheel seat and the second wheel seat, and the drive shaft moves through the bearing. A limit nut is screwed onto the rear end of the drive shaft, and a pulley, a pressure roller, and a drive gear are fixed to the front end of the drive shaft. When the pulley, pressure roller, and drive gear rotate, the drive shaft rotates synchronously. The drive shaft is guided by the bearing when it rotates, and the rear end of the drive shaft is axially limited by the limit nut to prevent the drive shaft from disengaging from the first wheel seat or the second wheel seat.

[0012] Furthermore, the transmission belt is a double-sided synchronous belt, and the pulley, drive wheel, and pressure wheel are synchronous pulleys; the inner teeth of the transmission belt mesh with the pulley and drive wheel; the outer teeth of the transmission belt mesh with the pressure wheel; the double-sided synchronous belt is a belt body with tooth grooves on both the inner and outer surfaces; thus, the driving force of the drive wheel can be synchronously transmitted to the pulley and pressure wheel, with no slippage and ensuring driving accuracy.

[0013] Furthermore, a locking toothed sleeve is also fitted and fixed on the manual crank handle; an elastic telescopic tube is also fixed to the seat body via a bracket, and the front end of the telescopic rod of the elastic telescopic tube is integrally formed with a locking tooth, which engages with the locking toothed sleeve; a guide tube is fixed to the front side of the power unit, and a first insulating pull rope is movably inserted into the inner side of the guide tube; one end of the first insulating pull rope is fixed to the connecting rod, and the other end of the first insulating pull rope is fixed to the rear end of the telescopic rod of the elastic telescopic tube; When the circuit breaker is closed, the first insulated pull rope loses its traction on the elastic telescopic tube. At this time, the locking teeth at the front end of the elastic telescopic tube engage with the locking sleeve of the manual crank handle, ensuring the locking teeth are engaged to the correct depth. The manual crank handle is locked until the circuit breaker is opened. Then, the connecting rod pulls the telescopic end of the elastic telescopic tube through the first insulated pull rope, causing the locking teeth to separate from the locking sleeve of the manual crank handle. At this time, the drawer unit can be cranked in and out, preventing the drawer unit from being cranked in and out when the circuit breaker is closed.

[0014] Furthermore, the elastic telescopic tube includes an outer tube fixed to a bracket, a telescopic rod slidably fitted inside the outer tube, a disc integrally formed on the outside of the telescopic rod, a cover plate screwed to the rear end of the telescopic rod, the rear end of the telescopic rod moving through the cover plate, and a first spring body sleeved between the cover plate and the disc body; when the first insulating pull rope is not pulled, it is pushed forward by the elastic force of the first spring body, causing the locking teeth to engage with the locking sleeve, wherein the elastic force of the first spring body is sufficient to allow the telescopic rod to reset, so that the locking teeth can smoothly enter the locking sleeve; when the manual crank drives the circuit breaker to close, the connecting rod swings and pulls the first insulating pull rope, the first insulating pull rope drives the telescopic rod of the elastic telescopic tube, causing the locking teeth to disengage from the locking sleeve.

[0015] Furthermore, a flexible stop is fixed to the side of the base near the connecting rod, and a second insulated pull rope is fixed to the actuating end of the flexible stop. The other end of the second insulated pull rope is fixed to the bottom of the travel end of the drawer unit. A travel guide wheel assembly is provided on the base in the direction of travel of the second insulated pull rope. When the drawer unit is swung out to the test position or the separated position, the second insulated pull rope loses its traction force, the flexible stop is subjected to the spring force, and the stop bar moves towards the connecting rod. At this time, the connecting rod is restricted by the stop bar, and the circuit breaker cannot be closed. Until the drawer unit is swung in to the connected position, the drawer unit pulls the flexible stop to move through the second insulated pull rope, causing the stop bar to disengage from the connecting rod. At this time, the circuit breaker can be closed freely. When the second insulated pull rope moves, it can be guided and clamped by the travel guide wheel assembly.

[0016] Furthermore, the elastic stopper includes a slot seat, with multiple guide posts fixed inside the slot seat. A slider is slidably mounted on the guide posts, a stop rod is fixed to the front end of the slider, and a sliding post is fixed to the side of the slider. The sliding post slides through the slot seat, and a second spring body is sleeved between the sliding post and the slot seat. The second insulated pull rope is fixed to the sliding post. The second spring body can drive the sliding post and the slider to slide. When the second insulated pull rope is pulled, the second spring body is compressed, the slider slides along the guide posts, and the sliding post slides along the slot seat, thereby causing the stop rod on the slider to disengage from the linkage action area.

[0017] Furthermore, when the drawer unit is in the connected position, the second insulated pull rope pulls the slider, causing the stop bar to disengage from the swing position of the connecting rod.

[0018] Furthermore, the manual crank handle and operating handle are plug-in crank interfaces or operating handles.

[0019] Compared with the prior art, the remote-controlled electric opening and closing device and drawer rocking in and out device of the present invention have the following advantages: 1. It has strong compatibility and versatility, and can be adapted to switch cabinets of different brands and models. Only the position of the transition adapter unit needs to be adjusted, which reduces the overall cost and supply chain complexity.

[0020] 2. The control is more convenient, enabling the circuit breaker to be opened and closed on-site or remotely, as well as the drawer unit to be rocked in and out.

[0021] 3. High safety: It can achieve mechanical interlocking between the circuit breaker and the drawer unit to avoid misoperation. When the circuit breaker is closed, the first insulated pull rope loses its traction force on the elastic telescopic tube. At this time, the locking teeth at the front end of the elastic telescopic tube engage with the locking tooth sleeve of the manual crank handle, ensuring the locking teeth are engaged to the correct depth. The manual crank handle is locked until the circuit breaker is opened. Then, the connecting rod pulls the telescopic end of the elastic telescopic tube through the first insulated pull rope, causing the locking teeth to disengage from the locking tooth sleeve of the manual crank handle. At this time, the drawer unit can be cranked in and out. When the drawer unit is cranked out to the test position or the separated position, the second insulated pull rope loses its traction force. The elastic stop is subjected to the spring force, and the stop bar moves towards the connecting rod. At this time, the connecting rod is restricted by the stop bar, and the circuit breaker cannot be closed. When the drawer unit is cranked in to the connected position, the drawer unit pulls the elastic stop through the second insulated pull rope, causing the stop bar to disengage from the connecting rod. At this time, the circuit breaker can be closed freely.

[0022] 4. The electric mechanism and switch cabinet are modularly separated, so even if the electric mechanism fails, the manual operation function will not be affected, and maintenance and replacement are more convenient.

[0023] 5. Easy to operate, retaining the same appearance and habits as manual operation, requiring no additional training for operators. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the remote-controlled electric opening and closing device and drawer rocking in and out device of the present invention.

[0025] Figure 2 This is a schematic diagram of the overall structure of Embodiment 2 of the remote-controlled electric opening and closing device and drawer rocking in and out device of the present invention.

[0026] Figure 3 This is a schematic diagram of the elastic telescopic tube structure of the present invention.

[0027] Figure 4 This is a schematic diagram of the overall structure of Embodiment 3 of the remote-controlled electric opening and closing device and drawer rocking in and out device of the present invention.

[0028] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0029] Figure 6 For the present invention Figure 4 A magnified schematic diagram of the structure at point B in the middle.

[0030] Reference numerals: 1. Manual crank handle; 2. Operating handle; 3. Base; 4. Double worm gear reducer; 5. Drive motor; 6. Clutch; 7. Drive wheel; 8. First wheel seat; 9. Pulley; 10. Drive belt; 11. Second wheel seat; 12. Pressure roller; 13. Crank; 14. Connecting rod; 15. Rocker arm; 16. Drive gear; 17. Reduction gear; 18. Transmission gear; 19. Bushing; 20. Drive shaft; 2 1. Locking tooth sleeve; 22. Elastic telescopic tube; 23. Clamping tooth; 24. Guide wire tube; 25. First insulated pull rope; 26. Outer tube body; 27. Telescopic rod; 28. Disc body; 29. ​​Cover plate; 30. First spring body; 31. Elastic stop; 32. Second insulated pull rope; 33. Traveling guide wheel assembly; 34. Groove seat; 35. Guide post; 36. Sliding block; 37. Stop bar; 38. Sliding column; 39. Second spring body. Detailed Implementation

[0031] Example 1: like Figure 1 The remote-controlled electric circuit breaker opening / closing and drawer-in / out device shown includes a manual crank handle 1 for driving the drawer in / out and an operating handle for driving the circuit breaker opening / closing. The manual crank handle 1 and the operating handle are either plug-in crank interfaces or operating handle 2. It also includes: The base 3 is fixed to the frame inside the drawer cabinet; the base 3 has a row of holes. The power unit is fixed on the base 3 and is connected to a remote control terminal via a controller. The power unit includes a double worm gear reducer 4, the input end of which is connected to a drive motor 5. Both output ends of the double worm gear reducer 4 are fixed with clutches 6. The input end of the clutches 6 is fixed to the worm gear, and the output end of the clutches 6 is fixed with a drive wheel 7. The transition adapter unit is provided in two sets. The transition adapter unit includes a first wheel seat 8 fixed on the base 3, and a pulley 9 is rotatably mounted on the first wheel seat 8. A transmission belt 10 is sleeved on the pulley 9, and each of the two transmission belts 10 is sleeved on a drive wheel 7. The belt pressing assembly includes a second wheel seat 11 fixed on the base 3, and a pressure roller 12 rotatably mounted on the second wheel seat 11; the transmission belt 10 is externally pressed on the pressure roller 12, and a rotation damper is fixed inside the second wheel seat 11, with the rotating end of the rotation damper fixed to the rotating end of the pressure roller 12; The circuit breaker transmission assembly includes a crank 13 eccentrically fixed to the front end of a pulley 9, the crank 13 being hinged to one end of a connecting rod 14, the other end of the connecting rod 14 being hinged to a rocker arm 15, and the bottom of the rocker arm 15 being fitted and fixed to an operating handle 2. The drawer drive assembly includes a drive gear 16 fixed to the rear end of a pulley 9. The drive gear 16 meshes with a transmission gear 18 through a plurality of reduction gears 17. The transmission gear 18 is engaged and fixed with a manual crank handle 1. The reduction gears 17 are rotatably mounted on the front end of a first wheel seat 8.

[0032] The remote-controlled electric opening and closing device and drawer rocking-in / rocking-out device of the present invention features an independent electric operating device for the drawer unit. This device is not installed on the circuit breaker body but is independently fixed to the drawer cabinet frame. This device can be coupled with the manual crank handle 1 and the operating handle 2. When the controller receives a remote electrical signal, its action can drive the circuit breaker handle to simulate manual opening and closing operations and to rock the drawer unit in and out. The original manual operating hole or operating handle 2 is still retained on the panel of the drawer unit. The manual operating component and the built-in device of the present invention are mechanically independent or detachable. In the absence of power or when on-site operation is required, the operator can operate the drawer unit on-site and use the dedicated crank handle or handle to perform opening and closing and rocking-in / rocking-out operations.

[0033] Before use, first fix the power unit to the base 3. Then, determine the positional distance between the manual crank 1 and the operating handle 2 according to the switch cabinet model. Next, fix the rocker arm 15 to the operating handle 2 and the transmission gear 18 to the manual crank arm 1. Then, fix the transition adapter unit to the base 3 so that the circuit breaker transmission assembly and the drawer transmission assembly can transmit the driving force to the rocker arm 15 and the operating handle 2. After fixing the position of the transition adapter unit, select the appropriate transmission belt 10 according to the distance between the transition adapter unit and the power unit. Then, attach the transmission belt 10 to the pulley 9 and the drive wheel 7. Finally, fix the belt pressing assembly to the base 3 so that the pressure wheel 12 and the transmission belt 10 are tensioned. Through the hole arrangement of the transmission belt 10 and the base 3, and the pressing of the belt pressing assembly, the positions of the power unit and the transition adapter unit can be matched, completing the installation of the entire device with the switch cabinet.

[0034] In use, the drawer can be manually cranked in and out using the manual crank 1, and the circuit breaker can be opened and closed using the operating handle 2, enabling manual operation. Simultaneously, remote control is also possible as needed. When a control command is issued from the remote control terminal, the controller receives the command and sends it to the dual worm gear reducer 4 and the clutch 6, as detailed below: When electric opening and closing are selected, the corresponding clutch 6 engages, and the drive motor 5 drives the worm of the double worm gear reducer 4 to rotate. The worm drives the worm wheel to rotate, and the engaged clutch 6 is driven by the rotation of the worm wheel, synchronously transmitting the rotational force to the drive wheel 7. The drive wheel 7 drives the pulley 9 to rotate synchronously through the transmission belt 10. The pulley 9 drives the crank 13 to rotate. The crank 13 drives the rocker arm 15 to swing through the connecting rod 14. When the rocker arm 15 swings, it drives the operating handle 2 to rotate at a set angle, thereby realizing the rotation of the operating handle 2 to close or open the circuit breaker. When the transmission belt 10 is driving, the pressure wheel 12 rotates synchronously, and the pressure wheel 12 is limited by rotational damping. When the drive wheel 7 stops rotating or the clutch 6 disengages, the pressure wheel 12 is limited by rotational damping, which can lock the pressure wheel 12 and prevent the transmission belt 10 from being in a driving state.

[0035] When the drawer unit is selected to be rocked in or out, the corresponding clutch 6 engages, and the drive motor 5 drives the worm of the double worm gear reducer 4 to rotate. The worm drives the worm wheel to rotate. The engaged clutch 6 is driven by the rotation of the worm wheel and synchronously transmits the rotational force to the drive wheel 7. The drive wheel 7 drives another pulley 9 to rotate synchronously through the transmission belt 10. The drive gear 16 at the pulley 9 rotates synchronously. The drive gear 16 drives the transmission gear 18 to rotate synchronously through multiple reduction gears 17. The transmission gear 18 drives the manual crank handle 1 to rotate synchronously, thereby driving the drawer unit to be rocked in or out.

[0036] A bushing 19 is fixed inside the first wheel seat 8 and the second wheel seat 11. A bearing is fitted inside the bushing 19. A drive shaft 20 is rotatably mounted on the first wheel seat 8 and the second wheel seat 11. The drive shaft 20 moves through the bearing. A limit nut is screwed to the rear end of the drive shaft 20. A pulley 9, a pressure roller 12, and a drive gear 18 are fixed to the front end of the drive shaft 20. When the pulley 9, the pressure roller 12, and the drive gear 18 rotate, the drive shaft 20 rotates synchronously. The drive shaft 20 is guided by the bearing when it rotates. The rear end of the drive shaft 20 is axially limited by the limit nut to prevent the drive shaft 20 from disengaging from the first wheel seat 8 or the second wheel seat 11.

[0037] The transmission belt 10 is a double-sided synchronous belt, and the pulley 9, drive wheel 7, and pressure wheel 12 are synchronous pulleys. The inner teeth of the transmission belt 10 are engaged with the pulley 9 and drive wheel 7. The outer teeth of the transmission belt 10 are engaged with the pressure wheel 12. The double-sided synchronous belt has tooth grooves on both its inner and outer surfaces. This allows the driving force of the drive wheel 7 to be synchronously transmitted to the pulley 9 and pressure wheel 12 without slippage, ensuring driving accuracy.

[0038] Example 2: like Figure 2 and Figure 3 The remote-controlled electric opening and closing device and drawer cranking in and out device shown includes a locking tooth sleeve 21 fitted and fixed on the manual crank handle 1; the base 3 is also fixed with an elastic telescopic tube 22 by a bracket, and the front end of the telescopic rod of the elastic telescopic tube 22 is integrally formed with a locking tooth 23, which engages with the locking tooth sleeve 21; a guide tube 24 is fixed to the front side of the power unit, and a first insulating pull rope 25 is movably inserted into the inner side of the guide tube 24; one end of the first insulating pull rope 25 is fixed to the connecting rod 14, and the other end of the first insulating pull rope 25 is fixed to the rear end of the telescopic rod of the elastic telescopic tube 22; When the circuit breaker is closed, the first insulated pull rope 25 loses its traction force on the elastic telescopic tube 22. At this time, the locking teeth 23 at the front end of the elastic telescopic tube 22 engage with the locking tooth sleeve 21 of the manual crank handle 1, ensuring the locking teeth 23 are engaged to the correct depth. At this time, the manual crank handle 1 is locked until the circuit breaker is opened. Then, the connecting rod 14 pulls the telescopic end of the elastic telescopic tube 22 through the first insulated pull rope 25, causing the locking teeth 23 to separate from the locking tooth sleeve 21 of the manual crank handle 1. At this time, the drawer unit can be cranked in and out, thus preventing the drawer unit from being cranked in and out when the circuit breaker is closed.

[0039] The elastic telescopic tube 22 includes an outer tube 26 fixed to a bracket. A telescopic rod 27 is slidably fitted inside the outer tube 26. A disc 28 is integrally formed on the outside of the telescopic rod 27. A cover plate 29 is screwed to the rear end of the telescopic rod 27. The rear end of the telescopic rod 27 moves through the cover plate 29. A first spring body 30 is sleeved between the cover plate 29 and the disc 28. When the first insulating pull rope 25 is not pulled, it is subjected to the elastic force of the first spring body 30, which pushes the telescopic rod 27 forward, causing the locking teeth 23 to engage with the locking sleeve 21. The elastic force of the first spring body 30 is sufficient to allow the telescopic rod 27 to reset, so that the locking teeth 23 can smoothly enter the locking sleeve 21. When the manual crank 1 drives the circuit breaker to close, the connecting rod 14 swings and pulls the first insulating pull rope 25. The first insulating pull rope 25 drives the telescopic rod 27 of the elastic telescopic tube 22, causing the locking teeth 23 to disengage from the locking sleeve 21.

[0040] Example 3: like Figures 4 to 6 The remote-controlled electric circuit breaker and drawer rocking-in / out device shown has an elastic stopper 31 fixed to the side of the base 3 near the connecting rod 14. A second insulated pull rope 32 is fixed to the actuating end of the elastic stopper 31, and the other end of the second insulated pull rope 32 is fixed to the bottom of the drawer unit's traveling end. A traveling guide wheel assembly 33 is provided on the base 3 in the traveling direction of the second insulated pull rope 32. When the drawer unit is rocked out to the test position or the separated position, the second insulated pull rope 32 loses its traction, and the elastic stopper 31 is subjected to spring force, causing the stop bar to move towards the connecting rod 14. At this time, the connecting rod 14 is restricted by the stop bar, and the circuit breaker cannot close. Until the drawer unit is rocked in to the connected position, the drawer unit pulls the elastic stopper 31 through the second insulated pull rope 32, causing the stop bar to disengage from the connecting rod 14. At this time, the circuit breaker can close freely. When the second insulated pull rope 32 moves, it can be guided and clamped by the traveling guide wheel assembly.

[0041] The elastic stopper 31 includes a slot 34, with multiple guide posts 35 fixed inside the slot 34. A slider 36 is slidably mounted on the guide posts 35. A stop bar 37 is fixed to the front end of the slider 36, and a sliding post 38 is fixed to the side of the slider 36. The sliding post 38 slides through the slot 34, and a second spring body 39 is sleeved between the sliding post 38 and the slot 34. The second insulated pull rope 32 is fixed to the sliding post 38. The second spring body 39 can drive the sliding post 38 and the slider 36 to slide. When the second insulated pull rope 32 is pulled, the second spring body 39 is compressed, the slider 36 slides along the guide post 35, and the sliding post 38 slides along the slot 34, thereby causing the stop bar 37 on the slider 36 to disengage from the operating area of ​​the connecting rod 14. When the drawer unit is in the connected position, the second insulated pull rope 32 pulls the slider 36, causing the stop bar 37 to disengage from the swing position of the connecting rod 14.

[0042] The above embodiments are merely preferred embodiments of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present invention are included within the scope of the present invention.

Claims

1. A remote-controlled electric circuit breaker opening and closing device and a drawer cranking mechanism, comprising a manual crank for cranking the drawer in and out, and an operating handle for opening and closing the circuit breaker, characterized in that: Also includes: A base, which is fixed to a frame inside the drawer cabinet; the base has a row of holes. The power unit is fixed to the base and is connected to a remote control terminal via a controller. The power unit includes a double worm gear reducer, the input end of which is connected to a drive motor. Both output ends of the double worm gear reducer are fixed with clutches, the input end of which is fixed to the worm gear, and the output end of which is fixed with a drive wheel. The transition adapter unit is provided in two sets. The transition adapter unit includes a first wheel seat fixed on the base, and a pulley is rotatably mounted on the first wheel seat. A transmission belt is sleeved on the pulley, and each of the two transmission belts is sleeved on a drive wheel. A belt pressing assembly includes a second wheel seat fixed to a base, on which a pressure roller is rotatably mounted; the pressure roller is externally pressed onto the drive belt, and a rotation damper is fixed inside the second wheel seat, with the rotating end of the rotation damper fixed to the rotating end of the pressure roller; A circuit breaker drive assembly, the circuit breaker drive assembly including a crank eccentrically fixed to the front end of a pulley, the crank being hinged to one end of a connecting rod, the other end of the connecting rod being hinged to a rocker arm, and the bottom of the rocker arm being fitted and fixed to an operating handle; A drawer drive assembly includes a drive gear fixed to the rear end of a pulley, the drive gear meshing with a transmission gear through multiple reduction gears, and the transmission gear being engaged and fixed with a manual crank handle; the reduction gear is rotatably mounted on the front end of a first wheel seat.

2. The remote-controlled electric opening and closing device and drawer rocking in and out device according to claim 1, characterized in that: A bushing is fixed inside the first wheel seat and the second wheel seat, and a bearing is fitted inside the bushing. A drive shaft is rotatably mounted on the first wheel seat and the second wheel seat, and the drive shaft moves through the bearing. A limit nut is screwed to the rear end of the drive shaft, and a pulley, a pressure roller and a drive gear are fixed to the front end of the drive shaft.

3. The remote-controlled electric opening and closing device and drawer rocking in and out device according to claim 1, characterized in that: The transmission belt is a double-sided synchronous belt, and the pulley, drive wheel, and pressure wheel are synchronous pulleys; the inner teeth of the transmission belt are engaged with the pulley and drive wheel; the outer teeth of the transmission belt are engaged with the pressure wheel.

4. The remote-controlled electric opening and closing device and drawer rocking in and out device according to claim 1, characterized in that: The manual crank handle is also fitted with a locking tooth sleeve; the seat is also fixed with an elastic telescopic tube by a bracket, and the front end of the telescopic rod of the elastic telescopic tube is integrally formed with a locking tooth, which engages with the locking tooth sleeve; a guide tube is fixed to the front side of the power unit, and a first insulating pull rope is movably inserted into the inner side of the guide tube; one end of the first insulating pull rope is fixed to the connecting rod, and the other end of the first insulating pull rope is fixed to the rear end of the telescopic rod of the elastic telescopic tube.

5. The remote-controlled electric opening and closing device and drawer rocking in and out device according to claim 4, characterized in that: The elastic telescopic tube includes an outer tube fixed to a bracket, a telescopic rod slidably fitted inside the outer tube, a disc integrally formed on the outside of the telescopic rod, a cover plate screwed to the rear end of the telescopic rod, the rear end of the telescopic rod moving through the cover plate, and a first spring body sleeved between the telescopic rod and the cover plate and the disc.

6. The remote-controlled electric opening and closing device and drawer rocking in and out device according to claim 4, characterized in that: When the manual crank drives the circuit breaker to close, the connecting rod swings and pulls the first insulated pull rope. The first insulated pull rope drives the telescopic rod of the elastic telescopic tube, causing the locking teeth to disengage from the locking sleeve.

7. The remote-controlled electric opening and closing device and drawer rocking in and out device according to claim 1, characterized in that: An elastic stop is fixed to the side of the seat near the connecting rod. A second insulating pull rope is fixed to the actuating end of the elastic stop. The other end of the second insulating pull rope is fixed to the bottom of the travel end of the drawer unit. A travel guide wheel assembly is provided on the seat in the travel direction of the second insulating pull rope.

8. The remote-controlled electric opening and closing device and drawer rocking in and out device according to claim 7, characterized in that: The elastic stopper includes a slot seat, with multiple guide posts fixed inside the slot seat. A slider is slidably mounted on the guide posts. A stop rod is fixed to the front end of the slider. A sliding post is fixed to the side of the slider. The sliding post slides through the slot seat. A second spring body is sleeved between the sliding post and the slider and the slot seat. The second insulating pull rope is fixed to the sliding post.

9. The remote-controlled electric opening and closing device and drawer rocking in and out device according to claim 8, characterized in that: When the drawer unit is in the connected position, the second insulated pull rope pulls the slider, causing the stop bar to disengage from the swing position of the connecting rod.

10. The remote-controlled electric opening and closing device and drawer rocking-in and rocking-out device according to claim 1, characterized in that: The manual crank and operating handle are plug-in crank interfaces or operating handles.

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