A novel modular combination drive mechanism

Abstract

The utility model relates to power system field especially relates to a novel modular combined drive mechanism, including the reduction gearbox that is composed of mounting seat and box seat, the upper end of reduction gearbox is provided with output feedback module, and the front side of output feedback module is provided with program control module, the side of program control module is provided with hand shake module, and mounting seat and box seat are detachably connected through bolt, and the surface of mounting seat is fixedly installed with reversible motor, the utility model discloses modularization is favorable to production, installation, replacement, maintenance and maintenance, by setting up output module, the output shaft, main helical gear, vice helical gear, conducting shaft, limit brake disc and brake pin are installed in module casing and are integrated, can prevent helical gear lubricating oil loss, improve helical gear transmission accuracy, and cancel the limit brake component of scattered installation, simplify limit brake structure, improve limit brake reliability, and increase program control box open function, provide great convenience for overhaul maintenance and gear setting.

Description

Technical Field

[0001] This utility model relates to the field of power systems, and in particular to a novel modular combined drive mechanism. Background Technology

[0002] In the power system, the mechanism box is an important driving device for switching the tap changer of the outdoor power transformer winding. It can automatically switch the power transformer coil winding without interruption each time according to the voltage fluctuation of the power grid. As the core driving mechanism in the mechanism box, it has the basic functions of reversible motor drive, gearbox deceleration and power increase, output shaft limit brake, hand-cranked power failure protection, and manual button remote control or local operation.

[0003] The mechanical limit device for the electric mechanism of the tap changer described in patent CN200710070035.2 is that the rotation of the indexing plate (gear plate) is transmitted to the guide wheel intermittently by the meshing of helical gear one on the output shaft and helical gear two on the back of the programmable control box. When the output shaft drives the tap changer to the beginning and end limit positions, the upper limit pin and the lower limit pin fixed on the indexing plate (gear plate) move the lever one and lever two mounted on the iron plate column to move the push rod with the return spring in the push plate to brake the rotation of the limit concave wheel fixed on the output shaft, so as to realize the limit braking protection and prevent the tap changer from exceeding the limit position when changing.

[0004] After on-site observation and analysis of the mechanism box currently equipped with the aforementioned mechanical limit device, the following three main problems were found in this structure: First, the control box (programmable controller box) is directly fixed to the mounting plate using high-mounted screws. Behind it are the indexing plate (gear plate) and guide wheels. When it is necessary to set or maintain the upper and lower limit sliders of the indexing plate (gear plate), the control box must be disassembled, which is extremely inconvenient, and the lead-out wires are easily pulled and damaged. Second, the limit brake accessory column, lever one, lever two, push plate, and push rod (brake) installed on the iron plate... The components include pins, shafts, adjusting nuts, pressure plates, return springs, and mounting brackets. However, levers one and two, being strip-shaped flat iron components, are unstable and prone to wobbling. These limit brake components are conveniently located on the iron plate behind the control box, making on-site adjustment difficult. The complex structure and numerous parts require repeated adjustments. Thirdly, helical gear two (main helical gear) and helical gear one (secondary helical gear) are exposed and independently installed. The meshing distance between the two helical gears is unstable, resulting in transmission errors and requiring repeated adjustments. In hot summer weather, the lubricating oil in the helical gears easily melts and leaks, causing wear. Utility Model Content

[0005] In order to overcome the problem that the existing mechanism box uses mechanical limit devices, resulting in a complex structure with many parts, requiring repeated adjustments.

[0006] The technical solution of this utility model is: a novel modular combined drive mechanism, including a reduction gearbox composed of a mounting base and a gearbox base, an output feedback module is provided at the upper end of the reduction gearbox, a programmable control module is provided on the front side of the output feedback module, and a hand-cranked module is provided on the side of the programmable control module.

[0007] The mounting base and the housing are detachably connected by bolts. A reversible motor is fixedly mounted on the surface of the mounting base. The housing is equipped with a meshing worm gear and worm. The output end of the reversible motor is fixedly connected to one end of the worm. The reversible motor is used to drive the worm to rotate. The meshing of the worm and the worm gear can achieve speed reduction transmission. The other end of the worm is equipped with a bevel gear. The two ends of the worm gear are rotatably connected to the housing through a shaft. The top of the shaft extends to the outside of the housing and is equipped with a drive interface. The drive interface is equipped with a keyway for connection.

[0008] The output feedback module includes an output module housing connected to the upper end of the housing. An output shaft is provided on the top of the output module housing. The output shaft runs through the output module housing from top to bottom, and the lower end of the output shaft extends to the bottom of the output module housing and is provided with a shaft end with a key bar. A limit brake assembly is provided inside the output module housing.

[0009] The programmable control module includes a protective frame installed on the front side of the housing. The front end of the protective frame is fixedly connected to the housing. The right end of the housing is equipped with a manual button operation panel (the panel is equipped with a zero-reset action counter to count each gear adjustment action of the mechanism housing. Remote / local control is selected by the button, and 1-N and N-1 are increment / decrement operation buttons. It can also be remotely controlled or manually operated on-site to increase or decrease the gear adjustment of the tap changer). The rear end of the housing is equipped with a multi-pin interface socket on the side of the protective frame. The rear end of the housing is equipped with a gearing component on the inside of the protective frame. The inside of the housing is equipped with a programmable switch component.

[0010] The hand-cranked module includes a hand-cranked housing mounted on the right end of the housing base. A hand crank is provided at the front end of the hand-cranked housing, and the hand crank and the hand-cranked housing are connected by a plug assembly. A power-off switch is provided at the rear end of the surface of the hand-cranked housing.

[0011] Preferably, the bottom of the front end of the gearbox is rotatably connected to the protective frame. Static hinges are installed at the front ends of both the mounting base and the gearbox base. A movable hinge is fixedly installed at the bottom of the rear end of the protective frame. The two ends of the static and movable hinges are rotatably connected. By rotating the hinges, the gearbox can be flipped. A chain is provided between the left end of the protective frame and the left end of the output module housing. When the gearbox is flipped, the chain is connected and limited. A hand-tightening screw is installed on the top of the protective frame. After the front end of the protective frame and the output module housing are attached, the hand-tightening screw is tightened to fix them.

[0012] Preferably, the shaft end and the drive interface mesh with each other. When the shaft end is inserted into the drive interface, the rotational power of the worm gear is synchronously transmitted to the output shaft, which can drive the output shaft to rotate. An oil seal is provided between the surface of the output shaft and the output module housing to prevent the lubricating oil in the output module housing from leaking out.

[0013] Preferably, the limiting brake assembly includes a limiting brake disc and a secondary helical gear fixedly mounted on the surface of the output shaft. Inside the output module housing, a primary helical gear is meshed with the secondary helical gear on its side. A transmission shaft is provided on the primary helical gear. Both ends of the transmission shaft are rotatably connected to the front and rear sides of the output module housing. The front end of the transmission shaft extends to the outside of the output module housing and is provided with a guide interface. When the output shaft rotates, the meshing of the secondary helical gear and the primary helical gear can transmit power to the transmission shaft.

[0014] Preferably, a brake pin is installed at the front end of the output module housing on the side of the transmission shaft, and a pulley is installed at the front end of the brake pin extending to the outside of the output module housing. Notches are opened on both sides of the surface of the limiting brake disc, the rear end of the brake pin is adapted to the notches, and a connecting sleeve is fitted on the surface of the brake pin.

[0015] The connecting sleeve and the output module housing are fixedly connected, and the connecting sleeve and the brake pin are slidably connected. The surface of the brake pin is provided with a cam in the connecting sleeve. A connecting spring is provided between the cam and the connecting sleeve. Due to the elasticity of the connecting spring, the brake pin has a certain movement gap, and when the rear end of the brake pin enters the notch groove, it forms a limiting engagement with the limiting brake disc.

[0016] Preferably, the gear-separating assembly includes a gear-separating disc rotatably mounted at the rear end of the housing via a disc shaft, and a guide wheel rotatably mounted at the rear end of the housing via a wheel shaft on the side of the gear-separating disc. The guide wheel has a protruding tooth on its surface, which fits into the surface of the gear-separating disc. A connecting block is provided at the end of the wheel shaft surface, and the wheel shaft is meshed with the guide wheel interface through an interface. When the transmission shaft rotates, it can synchronously drive the guide wheel to rotate. The surface of the gear-separating disc has an annular array of openings, and the rear end face of the housing is provided with an elastic ball that engages with the openings. When the guide wheel rotates once, the tooth moves the gear-separating disc one gear position.

[0017] The upper limit slider and the lower limit slider are fixedly installed on the upper and lower sides of the dividing plate, respectively. Both the upper limit slider and the lower limit slider are designed with a trapezoidal structure, and the pulleys are attached to the side of the dividing plate.

[0018] Preferably, the programmable switch assembly includes an indicator panel mounted on the front surface of the housing. A small pointer and a large pointer are respectively provided on both sides of the indicator panel surface. The small pointer is used to indicate the switching operation, and the large pointer is used to indicate the gear position. The small pointer is connected to the front end of the wheel axle, and the large pointer is connected to the front end of the disc axle. The main control board is located inside the housing behind the indicator panel. A toggle turntable programmable switch and a gear turntable programmable switch are respectively provided on the front side of the main control board. The toggle turntable programmable switch is connected and fixed to the wheel axle, and the gear turntable programmable switch is connected and fixed to the disc axle.

[0019] Preferably, the connector assembly includes an insertion sleeve mounted on a hand-cranked housing. A drive shaft is slidably mounted inside the insertion sleeve. The front end of the drive shaft is provided with a mating end, and the surface of the mating end is provided with a locking groove. The rear end of the drive shaft extends to the outside of the hand-cranked housing and is provided with an abutting wheel. The rear end of the drive shaft and the hand-cranked housing are slidably connected by a guide sleeve. A second bevel gear is fixedly mounted on the surface of the drive shaft on the inside of the hand-cranked housing. The second bevel gear and the guide sleeve are movably connected by a limiting spring. The second bevel gear and the first bevel gear are meshed. When the second bevel gear and the first bevel gear are meshed, the power of the worm gear can be transmitted to the drive shaft.

[0020] Preferably, the hand crank consists of an insertion seat and a handle. The insertion seat and the insertion port sleeve are connected by a sleeve. The end of the insertion seat has a through groove for connecting with the drive shaft. A locking rod is provided in the through groove. When the insertion seat is inserted, the locking rod enters the locking groove to form a connection limit. When the operator turns the hand crank, the drive shaft can be rotated synchronously. A check pin is slidably installed on the outer wall of the insertion port sleeve. The lower end of the check pin extends to the inner side of the insertion port sleeve. The insertion seat has a groove that can engage with the lower end of the check pin. When the insertion seat is inserted into the insertion port sleeve, the check pin and the groove limit the insertion seat. A spring is installed on the check pin. The end of the spring away from the check pin is fixedly connected to the surface of the insertion port sleeve.

[0021] Preferably, the surface of the power-off switch is provided with a switch lever for controlling opening and closing. The surfaces of the contact wheel and the switch lever are in contact. The power-off switch is used to control the power supply and power-off of the reversible motor. When the contact wheel moves, it can push the switch lever to disconnect the power supply of the reversible motor.

[0022] The beneficial effects of this utility model are:

[0023] This novel modular combined drive mechanism adopts a modular design that facilitates production, installation, replacement, maintenance, and upkeep. By setting an output module, the output shaft, main helical gear, secondary helical gear, transmission shaft, limit brake disc, and brake pin are installed as a single unit within the module housing. This prevents the loss of helical gear lubricating oil, improves the transmission accuracy of the helical gear, and eliminates the need for separately installed limit brake components, simplifying the limit brake structure, improving the reliability of the limit brake, and adding a programmable control box opening function, which greatly facilitates inspection, maintenance, and gear setting on the gear shifting disc. Attached Figure Description

[0024] Figure 1 The diagram shown is a schematic representation of the overall structure of a novel modular combined drive mechanism according to this utility model.

[0025] Figure 2 The diagram shown is a schematic representation of the hand crank and housing structure of a novel modular combined drive mechanism according to this utility model.

[0026] Figure 3 The diagram shown is a schematic of the structure of a novel modular combined drive mechanism after the box body is flipped.

[0027] Figure 4 The diagram shown is a schematic of a novel modular combined drive mechanism mounting base and housing structure according to this utility model.

[0028] Figure 5 The diagram shown is a schematic of the outer shell and internal structure of the output module of a novel modular combined drive mechanism according to this utility model.

[0029] Figure 6 The diagram shown is a schematic representation of the internal structure of the output module housing of a novel modular combined drive mechanism according to this utility model.

[0030] Figure 7 The diagram shown is a schematic representation of the internal structure of the housing and protective frame of a novel modular combined drive mechanism according to this utility model.

[0031] Figure 8 The diagram shown is a schematic of the output shaft structure of a novel modular combined drive mechanism according to this utility model.

[0032] Figure 9 The diagram shown is a cross-sectional structural diagram of the output shaft and transmission shaft of a novel modular combined drive mechanism according to this utility model;

[0033] Figure 10 The diagram shown is a cross-sectional structural diagram of the gear shift disc and the limit brake disc of a novel modular combined drive mechanism according to this utility model.

[0034] Figure 11The diagram shown is a schematic of a novel modular combined drive mechanism of this utility model after the limiting brake disc has rotated.

[0035] Figure 12 The diagram shown is a schematic representation of the internal structure of a novel modular combined drive mechanism hand-cranked housing according to this utility model.

[0036] Figure 13 The diagram shown is a schematic of the structure of a novel modular combined drive mechanism of this utility model after the hand crank is inserted.

[0037] Figure 14 The diagram shown is a cross-sectional structural schematic of the insertion sleeve of a novel modular combined drive mechanism according to this utility model.

[0038] Explanation of reference numerals in the attached diagram: 1. Reversible motor; 3. Mounting base; 4. Worm gear; 5. Worm; 6. Drive interface; 7. Housing base; 9. Bevel gear one; 10. Insertion sleeve; 11. Drive shaft; 12. Check pin; 13. Spring; 14. Bevel gear two; 15. Hand crank housing; 16. Limit spring; 18. Abutment wheel; 19. Power off switch; 20. Output shaft; 21. Output module housing; 22. Conductor shaft; 23. Guide interface; 24. Brake pin; 25. Pulley; 26. Limit brake disc; 27. Secondary helical gear; 28. Main helical gear; 29. ​​Shaft end; 31. Guide wheel; 32. Wheel axle; 33. Gear shifting disc; 35. Upper limit slider; 36. Lower limit slider; 37. Protective frame; 38. Disc shaft; 40. Box body; 41. Small pointer; 42. Large pointer; 43. Guide wheel programmable switch; 44. Gear shifting disc programmable switch; 45. Main control board; 46. Indicator panel; 47. Multi-pin interface socket; 48. Chain belt; 49. Tightening screw; 50. Manual button operation panel; 51. Hand crank. Detailed Implementation

[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0040] Please see Figures 1-14 This utility model provides an embodiment: a novel modular combined drive mechanism, including a reduction gearbox composed of a mounting base 3 and a housing base 7, an output feedback module is provided at the upper end of the reduction gearbox, a programmable control module is provided on the front side of the output feedback module, and a hand-cranked module is provided on the side of the programmable control module.

[0041] Mounting base 3 and housing base 7 are detachably connected by bolts. A reversible motor 1 is fixedly mounted on the surface of mounting base 3. A worm gear 4 and a worm 5 mesh with each other inside the housing base 7. The output end of the reversible motor 1 is connected and fixed to one end of the worm 5. The reversible motor 1 is used to drive the worm 5 to rotate. The meshing of the worm 5 and the worm gear 4 can realize speed reduction transmission. A bevel gear 9 is provided at the other end of the worm 5. The two ends of the worm gear 4 are rotatably connected to the housing base 7 through a shaft. The top of the shaft extends to the outside of the housing base 7 and is provided with a drive interface 6. A keyway for connection is provided in the drive interface 6.

[0042] The output feedback module includes an output module housing 21 connected to the upper end of the housing 7. An output shaft 20 is provided on the top of the output module housing 21. The output shaft 20 runs through the output module housing 21 from top to bottom, and the lower end of the output shaft 20 extends to the bottom of the output module housing 21 and is provided with a shaft end 29 with a key bar. A limit brake assembly is provided inside the output module housing 21.

[0043] The programmable control module includes a protective frame 37 installed on the front side of the housing 7. The front end of the protective frame 37 is fixedly connected to the housing 40. The right end of the housing 40 is provided with a manual button operation panel 50 (the panel is equipped with a zero-reset action counter to count each gear adjustment action of the mechanism box. Remote / local control is selected by the button, and 1-N and N-1 are increment and decrement operation buttons. It can also be remotely controlled or manually operated on-site to increase or decrease the gear adjustment of the tap changer). The rear end face of the housing 40 is provided with a multi-pin interface socket 47 on the side of the protective frame 37. The rear end face of the housing 40 is provided with a gearing component on the inner side of the protective frame 37. The inside of the housing 40 is provided with a programmable switch component.

[0044] The hand-cranked module includes a hand-cranked housing 15 installed on the right end of the housing 7. A hand crank 51 is provided at the front end of the hand-cranked housing 15. The hand crank 51 and the hand-cranked housing 15 are connected by a plug assembly. A power-off switch 19 is provided at the rear end of the surface of the hand-cranked housing 15.

[0045] Please see Figure 3 and Figure 5 , Figure 6 , Figure 7 The bottom of the front end of the gearbox is rotatably connected to the guard frame 37. The front ends of the mounting base 3 and the housing base 7 are both equipped with static hinges. The bottom of the rear end of the guard frame 37 is fixedly equipped with a movable hinge. The two ends of the static hinge and the movable hinge are rotatably connected. By rotating the hinges, the housing 40 can be flipped. A chain 48 is provided between the left end of the guard frame 37 and the left end of the output module housing 21. When the housing 40 is flipped, the chain 48 is connected and limited. A hand screw 49 is installed on the top of the guard frame 37. After the guard frame 37 and the front end of the output module housing 21 are attached, the hand screw 49 is tightened and fixed.

[0046] In this embodiment, the output power of the reversible motor 1, after being reduced and transmitted by the worm gear 4 and the worm 5, can drive the rotation of the output shaft 20, thereby driving the tap changer to regulate and switch the voltage of the outdoor transformer. The tap changer is driven by the tap changer assembly, so that the programmable switch assembly can synchronously follow the change and indicate the tap position in real time. The multi-module combination structure facilitates maintenance and upkeep.

[0047] Please see Figure 4 and Figure 5 , Figure 6 , Figure 8 The shaft end 29 and the drive interface 6 mesh with each other. When the shaft end 29 is inserted into the drive interface 6, the rotational power of the worm gear 4 is synchronously transmitted to the output shaft 20, which can drive the output shaft 20 to rotate. An oil seal is provided between the surface of the output shaft 20 and the output module housing 21 to prevent the lubricating oil in the output module housing 21 from leaking out.

[0048] In this embodiment, the isolation and protection of the output module housing 21 increases the sealing performance, reduces the loss of lubricating oil, and makes the internal transmission more precise and smooth, thus improving practicality.

[0049] Please see Figures 5-11 The limiting brake assembly includes a limiting brake disc 26 and a secondary helical gear 27 fixedly mounted on the surface of the output shaft 20. A primary helical gear 28 is meshed with the secondary helical gear 27 inside the output module housing 21. A transmission shaft 22 is mounted on the primary helical gear 28, with both ends rotatably connected to the front and rear sides of the output module housing 21. A guide interface 23 is provided at the front end of the transmission shaft 22 extending to the outside of the output module housing 21. When the output shaft 20 rotates, the meshing of the secondary helical gear 27 and the primary helical gear 28 transmits power to the transmission shaft 22. The front end of the output module housing 21 is mounted on the side of the transmission shaft 22. There is a brake pin 24, the front end of which extends to the outside of the output module housing 21 and is fitted with a pulley 25. Both sides of the surface of the limiting brake disc 26 are provided with notches and slots. The rear end of the brake pin 24 is adapted to the notches and slots, and a connecting sleeve is fitted on the surface of the brake pin 24. The connecting sleeve is fixedly connected to the output module housing 21 and slidably connected to the brake pin 24. A cam is provided on the surface of the brake pin 24 in the connecting sleeve. A connecting spring is provided between the cam and the connecting sleeve. Due to the elasticity of the connecting spring, the brake pin 24 has a certain movement clearance. When the rear end of the brake pin 24 enters the notch and slot, it forms a limiting engagement with the limiting brake disc 26.

[0050] In this embodiment, when the output shaft 20 rotates, the transmission of the secondary helical gear 27 and the main helical gear 28 can drive the transmission shaft 22 to rotate synchronously, while the docking of the guide interface 23 facilitates the flipping of the front box 40, making it convenient for inspection and maintenance.

[0051] Please see Figure 3 and Figure 5 , Figure 7 The gear-separating assembly includes a gear-separating disc 33 rotatably mounted at the rear end of the housing 40 via a disc shaft 38. A guide wheel 31 is rotatably mounted at the rear end of the housing 40, located on the side of the gear-separating disc 33, via a wheel shaft 32. The guide wheel 31 has a protruding tooth on its surface, which fits snugly against the surface of the gear-separating disc 33. A connecting block is provided at the end of the surface of the wheel shaft 32. The wheel shaft 32 is meshed with the guide wheel interface 23 via an interface, allowing for synchronous driving when the transmission shaft 22 rotates. The guide wheel 31 rotates, and the surface of the gear shifting plate 33 has an array of holes arranged in a ring. The rear end face of the housing 40 is provided with an elastic ball, which engages with the holes. When the guide wheel 31 rotates once, the teeth move the gear shifting plate 33 one gear position. The upper limit slider 35 and the lower limit slider 36 are fixedly installed on the upper and lower sides of the surface of the gear shifting plate 33, respectively. Both the upper limit slider 35 and the lower limit slider 36 are trapezoidal in design, and the pulley 25 is attached to the side of the gear shifting plate 33.

[0052] In this embodiment, after the power is transmitted to the gear shifting assembly, it can drive the guide wheel 31 to rotate. When the gear shifting disc 33 is shifted, the upper limit slider 35 and the lower limit slider 36 move in an eccentric state, thereby releasing the pulley 25, causing the brake pin 24 to move and match with the limit brake disc 26, realizing reliable limit braking at the beginning or end, and ensuring that the tap changer does not exceed the limit.

[0053] Please see Figure 1 and Figure 2 , Figure 5 , Figure 7 The programmable switch assembly includes an indicator panel 46 mounted on the front surface of the housing 40. A small pointer 41 and a large pointer 42 are respectively provided on both sides of the surface of the indicator panel 46. The small pointer 41 is used to indicate the switching operation, and the large pointer 42 is used to indicate the gear position. The small pointer 41 is connected to the front end of the wheel axle 32, and the large pointer 42 is connected to the front end of the disc axle 38. The main control board 45 is located inside the housing 40 behind the indicator panel 46. A toggle turntable programmable switch 43 and a gear turntable programmable switch 44 are respectively provided on the front side of the main control board 45. The toggle turntable programmable switch 43 is connected and fixed to the wheel axle 32, and the gear turntable programmable switch 44 is connected and fixed to the disc axle 38.

[0054] In this embodiment, the small pointer 41 and the large pointer 42 can move together to indicate the gear position, making it convenient for personnel to view simultaneously.

[0055] Please see Figure 1 , Figure 2 , Figure 12 , Figure 13 and Figure 14The insertion assembly includes an insertion sleeve 10 mounted on a hand-crank housing 15. A drive shaft 11 is slidably mounted inside the insertion sleeve 10. The front end of the drive shaft 11 has a mating end with a locking groove on its surface. The rear end of the drive shaft 11 extends to the outside of the hand-crank housing 15 and has an abutment wheel 18. The rear end of the drive shaft 11 and the hand-crank housing 15 are slidably connected by a guide sleeve. A second bevel gear 14 is fixedly mounted on the surface of the drive shaft 11 inside the hand-crank housing 15. The second bevel gear 14 and the guide sleeve are movably connected by a limiting spring 16. The second bevel gear 14 meshes with a first bevel gear 9. When the second bevel gear 14 and the first bevel gear 9 mesh, the power of the worm gear 5 can be transmitted to the drive shaft 11. The hand crank 51 consists of an insertion seat and a handle. The insertion seat and the insertion sleeve 10 are sleeved together, and the end of the insertion seat has a through groove for connecting with the drive shaft 11. A locking groove is provided in the through groove. When the insertion seat is inserted, the locking rod enters the locking groove to form a connection limit. When the operator rotates the hand crank 51, it can synchronously drive the drive shaft 11 to rotate. A check pin 12 is slidably installed on the outer wall of the insertion sleeve 10. The lower end of the check pin 12 extends to the inner side of the insertion sleeve 10. The insertion seat has a groove that can mesh with the lower end of the check pin 12. When the insertion seat is inserted into the insertion sleeve 10, the check pin 12 and the groove limit the insertion seat. A spring 13 is installed on the check pin 12. The end of the spring 13 away from the check pin 12 is fixedly connected to the surface of the insertion sleeve 10. The surface of the power-off switch 19 is provided with a switch lever for controlling opening and closing. The surfaces of the contact wheel 18 and the switch lever are in contact. The power-off switch 19 is used to control the power supply and power-off of the reversible motor 1. When the contact wheel 18 moves, it can push the switch lever to disconnect the power supply of the reversible motor 1.

[0056] In this embodiment, when manual operation is required, the hand crank 51 can be inserted into the insertion sleeve 10 and aligned with the internal drive shaft 11 before being pushed in until the second bevel gear 14 meshes with the first bevel gear 9 and cannot be pushed in further, and is locked by the check pin 12. During the pushing process of the hand crank 51, the power-off switch 19 is simultaneously disconnected, realizing the automatic disconnection of the power supply of the reversible motor 1, ensuring that the reversible motor 1 is in a safe power-off state when manually driven. Cranking the hand crank 51 can directly drive the worm 5 and worm wheel 4 in the gearbox to rotate, driving the output shaft 20 to rotate. After the manual drive operation, it can be released by slightly twisting the outer sleeve of the hand crank insertion sleeve 10. Under the action of the internal spring 16, the second bevel gear 14 disengages from the first bevel gear 9, and the hand crank 51 is also withdrawn by the limit spring 16, and the power-off switch 19 is also restored to conduction.

[0057] Working principle: When the grid voltage changes, the control room sends a remote voltage regulation command to the programmable control box 40. Based on the received command, the logic is judged and the drive output is controlled to drive the reversible motor 1 to drive the worm gear 5 to rotate. After the worm wheel 4 reduces the speed and increases the force, the output shaft 20 drives the tap changer switch through the external transmission rod of the mechanism box to regulate and switch the outdoor transformer voltage. At the same time, the main helical gear 28 on the output shaft 20 transmits to the transmission shaft 22 of the auxiliary helical gear 27, the guide interface 23 to the wheel axle 32, and then to the guide wheel 31 on the same axis. The guide turntable programmable control switch 43 extends into the programmable control box to make synchronous corresponding changes for the carry. A small pointer 41 is provided at the top of the wheel axle 32 as a switching operation indicator for the guide wheel 31. The disc shaft 38 of the gear plate 33 also extends into the programmable control box to drive the gear turntable programmable control switch 44 to perform gear selection program control. A large pointer 42 is provided at the top of the disc shaft 38 to indicate the real-time gear position of the tap changer.

[0058] It can also be combined with manual operation, where personnel can operate it manually through the hand crank 51. When the hand crank 51 is inserted into the insertion sleeve 10, it can be powered off by the power cut-off switch 19.

[0059] Through the above steps, the output power of the reversible motor 1, after being reduced and transmitted by the worm gear 4 and worm 5, can drive the rotation of the output shaft 20, thereby driving the tap changer to regulate and switch the voltage of the outdoor transformer. The tap changer is driven by the tap changer assembly, so that the programmable switch assembly can synchronously follow the change and indicate the tap position in real time. The multi-module combination structure facilitates maintenance and repair, thus solving the problem that the existing mechanism box uses mechanical limit devices, resulting in a complex structure with many parts and requiring repeated adjustments.

[0060] The above are merely preferred embodiments of this utility model. It should be noted that the above preferred embodiments should not be considered as limitations on this utility model, and the scope of protection of this utility model should be determined by the scope defined in the claims. For those skilled in the art, several improvements and modifications can be made without departing from the spirit and scope of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A novel modular combined drive mechanism, characterized in that: The gearbox includes a gearbox consisting of a mounting base (3) and a housing (7). The upper end of the gearbox is provided with an output feedback module, and the front side of the output feedback module is provided with a programmable control module. The side of the programmable control module is provided with a hand crank module. The mounting base (3) and the housing (7) are detachably connected by bolts. A reversible motor (1) is fixedly mounted on the surface of the mounting base (3). The housing (7) is provided with a meshing worm wheel (4) and a worm (5). The output end of the reversible motor (1) is connected and fixed to one end of the worm (5). The reversible motor (1) is used to drive the worm (5) to rotate. The meshing of the worm (5) and the worm wheel (4) can realize speed reduction transmission. The other end of the worm (5) is provided with a bevel gear (9). The two ends of the worm wheel (4) are rotatably connected to the housing (7) through a shaft. The top of the shaft extends to the outside of the housing (7) and is provided with a drive interface (6). The drive interface (6) is provided with a keyway for connection. The output feedback module includes an output module housing (21) connected to the upper end of the housing (7). An output shaft (20) is provided on the top of the output module housing (21). The output shaft (20) runs through the output module housing (21) from top to bottom. The lower end of the output shaft (20) extends to the bottom of the output module housing (21) and is provided with a shaft end (29) with a key bar. A limit brake assembly is provided inside the output module housing (21). The programmable module includes a protective frame (37) installed on the front side of the housing (7), a box (40) fixedly connected to the front end of the protective frame (37), a manual button operation panel (50) provided on the right end of the box (40), a multi-pin interface socket (47) provided on the rear end face of the box (40) on the side of the protective frame (37), a dividing component provided on the rear end face of the box (40) on the inner side of the protective frame (37), and a programmable switch component provided inside the box (40). The hand-cranked module includes a hand-cranked housing (15) installed on the right side of the housing (7). A hand crank (51) is provided at the front end of the hand-cranked housing (15). The hand crank (51) and the hand-cranked housing (15) are connected by a plug assembly. A power-off switch (19) is provided at the rear end of the surface of the hand-cranked housing (15).

2. The novel modular combined drive mechanism according to claim 1, characterized in that: The bottom of the front end of the gearbox is rotatably connected to the guard frame (37). The front ends of the mounting base (3) and the housing base (7) are both equipped with static hinges. The bottom of the rear end of the guard frame (37) is fixedly equipped with a movable hinge. The two ends of the static hinge and the movable hinge are rotatably connected. The housing (40) can be flipped by rotating the hinges. A chain (48) is provided between the left end of the guard frame (37) and the left end of the output module housing (21). When the housing (40) is flipped, the chain (48) is connected and limited. A hand screw (49) is installed on the top of the guard frame (37). After the front end of the guard frame (37) and the output module housing (21) are attached, the hand screw (49) is tightened and fixed.

3. The novel modular combined drive mechanism according to claim 1, characterized in that: The shaft end (29) and the drive interface (6) mesh with each other. When the shaft end (29) is inserted into the drive interface (6), the rotational power of the worm gear (4) is synchronously transmitted to the output shaft (20), which can drive the output shaft (20) to rotate. An oil seal is provided between the surface of the output shaft (20) and the output module housing (21) to prevent the lubricating oil in the output module housing (21) from leaking out.

4. A novel modular combined drive mechanism according to claim 1, characterized in that: The limit brake assembly includes a limit brake disc (26) and a secondary helical gear (27) fixedly mounted on the surface of the output shaft (20). Inside the output module housing (21), a main helical gear (28) is meshed with the secondary helical gear (27). A transmission shaft (22) is provided on the main helical gear (28). The two ends of the transmission shaft (22) are rotatably connected to the front and rear sides of the output module housing (21). The front end of the transmission shaft (22) extends to the outside of the output module housing (21) and is provided with a guide interface (23). When the output shaft (20) rotates, the meshing of the secondary helical gear (27) and the main helical gear (28) can transmit power to the transmission shaft (22).

5. A novel modular combined drive mechanism according to claim 4, characterized in that: A brake pin (24) is installed at the front end of the output module housing (21) on the side of the transmission shaft (22). The front end of the brake pin (24) extends to the outside of the output module housing (21) and a pulley (25) is installed. Notches are provided on both sides of the surface of the limiting brake disc (26). The rear end of the brake pin (24) is adapted to the notches, and a connecting sleeve is fitted on the surface of the brake pin (24). The connecting sleeve and the output module housing (21) are fixedly connected, and the connecting sleeve and the brake pin (24) are slidably connected. The surface of the brake pin (24) is provided with a cam in the connecting sleeve. A connecting spring is provided between the cam and the connecting sleeve. Due to the elasticity of the connecting spring, the brake pin (24) has a certain movement gap. When the rear end of the brake pin (24) enters the notch groove, it forms a limiting engagement with the limiting brake disc (26).

6. A novel modular combined drive mechanism according to claim 1, characterized in that: The gear shifting assembly includes a gear shifting disc (33) rotatably mounted on the rear end of the housing (40) via a disc shaft (38), and a guide wheel (31) rotatably mounted on the side of the gear shifting disc (33) at the rear end of the housing (40) via a wheel shaft (32). The surface of the guide wheel (31) is provided with a protruding tooth, and the tooth fits into the surface of the gear shifting disc (33). A connecting block is provided at the end of the surface of the wheel shaft (32). The wheel shaft (32) is meshed with the guide interface (23) through an interface. When the transmission shaft (22) rotates, it can synchronously drive the guide wheel (31) to rotate. The surface of the gear shifting disc (33) is provided with an annular array of openings, and the rear end face of the housing (40) is provided with an elastic ball. The elastic ball and the openings engage. When the guide wheel (31) rotates once, the tooth moves the gear shifting disc (33) to move one gear. The upper limit slider (35) and the lower limit slider (36) are fixedly installed on the upper and lower sides of the dividing plate (33), respectively. Both the upper limit slider (35) and the lower limit slider (36) are designed with a trapezoidal structure, and the pulley (25) is attached to the side of the dividing plate (33).

7. A novel modular combined drive mechanism according to claim 1, characterized in that: The programmable switch assembly includes an indicator panel (46) installed on the front surface of the housing (40). A small pointer (41) and a large pointer (42) are respectively provided on both sides of the surface of the indicator panel (46). The small pointer (41) is used to display the switching operation indication, and the large pointer (42) is used to display the gear position indication. The small pointer (41) is connected to the front end of the wheel axle (32), and the large pointer (42) is connected to the front end of the disc axle (38). The main control board (45) is provided inside the housing (40) behind the indicator panel (46). A dial control switch (43) and a gear control switch (44) are respectively provided on the front side of the main control board (45). The dial control switch (43) is connected and fixed to the wheel axle (32), and the gear control switch (44) is connected and fixed to the disc axle (38).

8. A novel modular combined drive mechanism according to claim 1, characterized in that: The socket assembly includes an insertion sleeve (10) mounted on a hand-cranked housing (15). A drive shaft (11) is slidably mounted inside the insertion sleeve (10). The front end of the drive shaft (11) is provided with a mating end, and the surface of the mating end is provided with a locking groove. The rear end of the drive shaft (11) extends to the outside of the hand-cranked housing (15) and is provided with an abutment wheel (18). The rear end of the drive shaft (11) and the hand-cranked housing (15) are slidably connected by a guide sleeve. The surface of the drive shaft (11) is located inside the hand-cranked housing (15) and a second bevel gear (14) is fixedly mounted. The second bevel gear (14) and the guide sleeve are movably connected by a limiting spring (16). The second bevel gear (14) and the first bevel gear (9) are meshed. When the second bevel gear (14) and the first bevel gear (9) are meshed, the power of the worm gear (5) can be transmitted to the drive shaft (11).

9. A novel modular combined drive mechanism according to claim 1, characterized in that: The hand crank (51) consists of an insertion seat and a handle. The insertion seat and the insertion port sleeve (10) are connected by a sleeve. The end of the insertion seat is provided with a through groove for connecting with the drive shaft (11). A locking rod is provided in the through groove. When the insertion seat is inserted, the locking rod enters the locking groove to form a connection limit. When the person rotates the hand crank (51), the drive shaft (11) can be rotated synchronously. A check pin (1) is slidably installed on the outer wall of the insertion port sleeve (10). 2) The lower end of the check tongue pin (12) extends to the inside of the insertion port sleeve (10), and the insertion seat is provided with a groove that can mesh with the lower end of the check tongue pin (12). When the insertion seat is inserted into the insertion port sleeve (10), the check tongue pin (12) and the groove form a limit on the insertion seat. A spring (13) is installed on the check tongue pin (12), and the end of the spring (13) away from the check tongue pin (12) is fixedly connected to the surface of the insertion port sleeve (10).

10. A novel modular combined drive mechanism according to claim 1, characterized in that: The surface of the power-off switch (19) is provided with a switch lever for controlling opening and closing. The surfaces of the contact wheel (18) and the switch lever are in contact. The power-off switch (19) is used to control the power supply and power-off of the reversible motor (1). When the contact wheel (18) moves, it can push the switch lever to disconnect the power supply of the reversible motor (1).

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