Novel modular combined driving mechanism

Abstract

The invention relates to the field of power systems, in particular to a novel modular combined driving mechanism which comprises a reduction gearbox composed of a mounting seat and a box seat, an output feedback module is arranged at the upper end of the reduction gearbox, a program control module is arranged on the front side of the output feedback module, and a hand module is arranged on the side of the program control module. The mounting seat and the box seat are detachably connected through bolts, and a reversible motor is fixedly mounted on the surface of the mounting seat; modularization is adopted, production, installation, replacement, maintenance and repair are facilitated, the output module is arranged, an output shaft, a main bevel gear, an auxiliary bevel gear, a conduction shaft, a limiting brake disc and a brake pin are installed in a module shell into a whole, lubricating oil of the bevel gears can be prevented from being lost, the transmission precision of the bevel gears is improved, limiting brake components installed in a scattered mode are omitted, and the service life of the transmission shaft is prolonged. The limiting brake structure is simplified, the limiting brake reliability is improved, the program control box turning-over function is added, and great convenience is provided for overhaul and maintenance and gear setting of the gear dividing disc.

Description

Technical Field

[0001] The present invention relates to the field of power systems, and in particular to a novel modular combined drive mechanism. Background Art

[0002] In the power system, the mechanism box is an important driving device for tapping and voltage regulation of outdoor power transformer windings. It can automatically switch the power transformer coil windings without interruption each time the drive mechanism output shaft controls the tap changer according to the fluctuation of the grid voltage, thereby achieving the purpose of voltage regulation. As the core driving mechanism in the mechanism box, it has the basic functions of reversible motor drive, reduction gear deceleration and force increase, output shaft limit brake, manual power-off protection, manual button remote control or local operation; The rotation of the indexing plate (step plate) described in Patent No. CN200710070035.2 "Mechanical limit device of the electric mechanism of the tap changer" is transmitted to the intermittent shifting of the shifting guide wheel after the engagement of the bevel gear 1 on the output shaft and the bevel gear 2 on the back of the program control box. When the output shaft drives the tap changer to the initial and final limit positions, the upper limit pin and the lower limit pin fixed on the indexing plate (step plate) shift the shifting rod 1 and the shifting rod 2 installed on the iron plate column to shift 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, thereby realizing the limit brake protection and preventing the tap changer from exceeding the limit gear when changing.

[0003] After on-site observation and analysis of the mechanism box currently equipped with the above-mentioned mechanical limit device, it was found that this structure has the following three major problems: First, the control box (program control box) is directly fixed to the installation iron plate with high-foot screws, and there is a scale plate (step plate) and a guide wheel at the back. When the upper and lower limit sliders of the scale plate (step plate) need to be set and maintained, the control box needs to be disassembled, which is extremely inconvenient and the lead-out wires at the back are easily pulled and damaged; Second, the limit brake accessory column, lever 1, lever 2, push plate, push rod (brake) installed on the iron plate are Pin), pin shaft, adjusting nut, pressure plate, return spring, and mounting bracket. Among them, the first and second levers are strip-shaped flat iron components that are unstable and easy to shake. These limit brake accessories are installed separately on the iron plate behind the control box, which brings difficulties to on-site adjustment. The structure is complex and has many parts, and repeated adjustments are required; thirdly, the second helical gear (main helical gear) and the first helical gear (secondary helical gear) are exposed and installed independently. The meshing distance between the two helical gears is unstable, resulting in transmission error, which requires repeated adjustments. In hot summer days, the lubricating oil of the helical gears is easy to melt and lose, resulting in wear. Summary of the Invention

[0004] In order to overcome the problem that the existing mechanism box adopts a mechanical limit device, resulting in a complex structure with many parts and requiring repeated adjustments.

[0005] The technical solution of the present invention is: a novel modular combined drive mechanism, comprising a reduction box composed of a mounting base and a box base, an output feedback module being provided at the upper end of the reduction box, a program control module being provided at the front side of the output feedback module, and a hand crank module being provided at the side of the program control module; The mounting seat and the box seat are detachably connected by bolts, and a reversible motor is fixedly mounted on the surface of the mounting seat. A worm gear and a worm that mesh with each other are provided inside the box seat. 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, and the meshing of the worm and the worm gear can realize a reduction transmission. A bevel gear is provided at the other end of the worm, and both ends of the worm gear are rotatably connected to the box seat through a shaft rod, and a drive interface is provided on the top of the shaft rod extending to the outside of the box seat, and a keyway for connection is provided in the drive interface; The output feedback module includes an output module housing connected to the upper end of the box base, an output shaft is provided on the top of the output module housing, the output shaft passes 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, and a limit brake assembly is provided inside the output module housing; The programmable control module includes a guard frame installed on the front side of the box seat, the front end of the guard frame is fixedly connected to the box body, and a manual button operation panel is provided on the right end of the box body (a resettable action counter is installed on the panel to count each gear adjustment action of the mechanism box, remote control / local control is a selection button, 1-N and N-1 are increase and decrease operation buttons, and the tap changer can also be increased or decreased by remote control or local manual button operation). The rear end face of the box body is provided with a multi-pin interface socket on the side of the guard frame, the rear end face of the box body is provided with a step assembly on the inner side of the guard frame, and the interior of the box body is provided with a programmable switch assembly; The hand crank module includes a hand crank shell seat installed at the right end of the box seat, a hand crank handle is provided at the front end of the hand crank shell seat, the hand crank handle and the hand crank shell seat are connected through a socket assembly, and a power off switch is provided at the rear end of the hand crank shell seat surface.

[0006] Preferably, the bottom of the front end of the reduction gearbox is rotatably connected to the guard frame, the front ends of the mounting seat and the box seat are both installed with static hinges, and the bottom of the rear end of the guard frame is fixedly installed with a dynamic hinge. The two ends of the static hinge and the dynamic hinge are rotatably connected. The box body can be flipped over by the rotation connection of the hinge. A chain belt is provided between the left end of the guard frame and the left end of the output module shell. When the box body is flipped over, the chain belt is connected and limited. A hand screw is installed on the top of the guard frame. After the guard frame and the front end of the output module shell are fitted, the hand screw is tightened and fixed.

[0007] Preferably, the shaft end and the drive interface engage 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 loss of lubricating oil in the output module housing.

[0008] Preferably, the limit brake assembly includes a limit brake disc and a secondary bevel gear fixedly mounted on the surface of the output shaft. A main bevel gear is meshed and mounted on the side of the secondary bevel gear inside the output module housing. A transmission shaft is provided on the main bevel gear. The two 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 bevel gear and the main bevel gear can transmit power to the transmission shaft.

[0009] 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 on the outside of the output module housing at the front end of the brake pin. Notches are provided on both sides of the surface of the limit brake disc, and the rear end of the brake pin is adapted to the notch, and a connecting sleeve is provided on the surface of the brake pin. The connecting sleeve is fixedly connected to the output module housing, and the connecting sleeve is slidably connected to the brake pin. The surface of the brake pin is located in the connecting sleeve and a convex disc is provided. A connecting spring is provided between the convex disc and the connecting sleeve. Due to the elasticity of the connecting spring, the brake pin has a certain movable gap, and when the rear end of the brake pin enters the notch groove, a limiting engagement is formed on the limiting brake disc.

[0010] Preferably, the shift assembly includes a shift plate rotatably mounted on the rear end of the box body through a disk shaft, and the rear end of the box body is located on the side of the shift plate and is rotatably mounted on a guide wheel through a wheel shaft, the surface of the guide wheel is provided with a protruding tooth, and the tooth is in contact with the surface of the shift plate, and a connecting block is provided at the end of the wheel shaft surface, and the wheel shaft is meshed with the guide interface through an interface, and when the transmission shaft rotates, the guide wheel can be synchronously driven to rotate, the surface of the shift plate is provided with openings distributed in a ring array, and the rear end surface of the box body is provided with an elastic ball, and the elastic ball is engaged with the opening, and when the guide wheel rotates one circle, the teeth drive the shift plate to move one gear; An upper limit slider and a lower limit slider are fixedly installed on the upper and lower sides of the surface of the step disk respectively. The upper limit slider and the lower limit slider are both designed in a trapezoidal structure, and the pulley is attached to the side of the step disk.

[0011] Preferably, the programmable switch assembly includes an indicator panel installed on the front surface of the box body, and a small pointer and a large pointer are respectively provided on both sides of the surface of the indicator panel. The small pointer is used to display the indication of switching operation, and the large pointer is used to display the gear indication. 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 disk shaft. A main control board is provided on the rear side of the indicator panel inside the box body, and a guide dial programmable switch and a gear dial programmable switch are respectively provided on the front side of the main control board. The guide dial programmable switch is connected and fixed to the wheel axle, and the gear dial programmable switch is connected and fixed to the disk shaft.

[0012] Preferably, the socket assembly includes an insertion port sleeve installed on the hand-cranked shell seat, a drive shaft is slidably installed inside the insertion port sleeve, a docking end is provided at the front end of the drive shaft, a locking groove is provided on the surface of the docking end, the rear end of the drive shaft extends to the outside of the hand-cranked shell seat and a resistance wheel is provided, the rear end of the drive shaft and the hand-cranked shell seat are slidably connected through a guide sleeve, the surface of the drive shaft is located on the inner side of the hand-cranked shell seat and is fixedly installed with bevel gear 2, and bevel gear 2 and the guide sleeve are movably connected through a limit spring, bevel gear 2 and bevel gear 1 are meshed together, and when bevel gear 2 and bevel gear 1 are meshed together, the power of the worm can be transmitted to the drive shaft.

[0013] Preferably, the hand crank consists of an insertion seat and a handle, the insertion seat and the insertion port sleeve are socket-connected, and a through groove for connecting to the drive shaft is provided at the end of the insertion seat, and 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, and when the person turns the hand crank, the drive shaft can be synchronously driven to rotate. A check tongue pin is slidably installed on the outer wall of the surface of the insertion port sleeve, and the lower end of the check tongue pin extends to the inner side of the insertion port sleeve, and a groove that can engage with the lower end of the check tongue pin is provided on the insertion seat. When the insertion seat is inserted into the insertion port sleeve, the check tongue pin and the groove form a limit for the insertion seat, and a spring is installed on the check tongue pin, and the end of the spring away from the check tongue pin is fixedly connected to the surface of the insertion port sleeve.

[0014] Preferably, the surface of the power-off switch is provided with a switch paddle for controlling opening and closing, and the surfaces of the contact wheel and the switch paddle are in contact with each other. The power-off switch is used to control the power supply and power off of the reversible motor. When the contact wheel moves, the switch paddle can be pushed to disconnect the power supply of the reversible motor.

[0015] Beneficial effects of the present invention: This novel modular combined drive mechanism adopts modularization to facilitate production, installation, replacement, maintenance and servicing. By setting up the output module, the output shaft, main helical gear, auxiliary helical gear, transmission shaft, limit brake disc and brake pin are installed in the module housing as one, which can prevent the loss of helical gear lubricating oil and improve the transmission accuracy of the helical gear. It also eliminates the dispersed installation of limit brake components, simplifies the limit brake structure, improves the reliability of the limit brake, and adds the function of opening the programmable box, which greatly facilitates the inspection and maintenance and the setting of the gear position of the shift plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the overall structure of a novel modular combined drive mechanism of the present invention; Figure 2 Shown is a schematic diagram of a novel modular combined drive mechanism hand crank and box structure of the present invention; Figure 3 Shown is a schematic diagram of the structure of a novel modular combined drive mechanism after the box body is flipped over; Figure 4 Shown is a schematic diagram of a novel modular combined drive mechanism mounting base and box base structure of the present invention; Figure 5 Shown is a schematic diagram of the output module housing and the internal structure of the box body of a novel modular combined drive mechanism of the present invention; Figure 6 Shown is a schematic diagram of the internal structure of the output module housing of a novel modular combined drive mechanism of the present invention; Figure 7 Shown is a schematic diagram of the internal structure of a novel modular combined drive mechanism box and a guard frame of the present invention; Figure 8 Shown is a schematic diagram of the output shaft structure of a novel modular combined drive mechanism of the present invention; Figure 9 Shown is a schematic diagram of the cross-sectional structure of the output shaft and the conduction shaft of a novel modular combined drive mechanism of the present invention; Figure 10 Shown is a schematic cross-sectional structure diagram of a novel modular combined drive mechanism of the present invention, comprising a shifting disc and a limit brake disc; Figure 11 Shown is a schematic diagram of a novel modular combined drive mechanism of the present invention after the limited brake disc rotates; Figure 12 Shown is a schematic diagram of the internal structure of a hand-cranked housing seat of a novel modular combined drive mechanism of the present invention; Figure 13 Shown is a schematic diagram of the structure of a novel modular combined drive mechanism after the hand crank handle is inserted; Figure 14 Shown is a schematic cross-sectional structure diagram of an insertion port sleeve of a novel modular combined drive mechanism of the present invention.

[0017] Explanation of Reference Numerals: 1. reversible motor; 3. mounting base; 4. worm gear; 5. worm; 6. drive interface; 7. housing base; 9. bevel gear 1; 10. insertion port sleeve; 11. drive shaft; 12. check pin; 13. spring; 14. bevel gear 2; 15. crank housing base; 16. limit spring; 18. contact wheel; 19. power off switch; 20. output shaft; 21. output module housing; 22. transmission shaft; 23. guide interface; 24. brake pin; 25. pulley; 26. limit brake disc; 27. Auxiliary bevel gear; 28. Main bevel gear; 29. Shaft end; 31. Guide wheel; 32. Axle; 33. Shift plate; 35. Upper limit slider; 36. Lower limit slider; 37. Guard frame; 38. Disc shaft; 40. Box body; 41. Small pointer; 42. Large pointer; 43. Guide dial program-controlled switch; 44. Shift dial program-controlled switch; 45. Main control board; 46. Indicator panel; 47. Multi-pin interface socket; 48. Chain; 49. Thumb screw; 50. Manual button operation panel; 51. Hand crank. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings and examples.

[0019] See also Figures 1-14 The present invention provides an embodiment: a novel modular combined drive mechanism, comprising a reduction gearbox consisting of a mounting base 3 and a box base 7, an output feedback module being provided at the upper end of the reduction gearbox, a program control module being provided at the front side of the output feedback module, and a hand crank module being provided at the side of the program control module; The mounting seat 3 and the box seat 7 are detachably connected by bolts. A reversible motor 1 is fixedly mounted on the surface of the mounting seat 3. A worm gear 4 and a worm 5 that mesh with each other are provided inside the box seat 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, and the meshing of the worm 5 and the worm wheel 4 can realize a reduction transmission. A bevel gear 9 is provided at the other end of the worm 5, and both ends of the worm wheel 4 are rotatably connected to the box seat 7 respectively, and the top of the shaft extends to the outside of the box seat 7 to be provided with a drive interface 6, and a keyway for connection is provided in the drive interface 6; The output feedback module includes an output module housing 21 connected to the upper end of the box base 7. An output shaft 20 is provided on the top of the output module housing 21. The output shaft 20 passes 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 strip. A limit brake assembly is provided inside the output module housing 21. The programmable control module includes a protective frame 37 mounted on the front side of the box base 7. The front end of the protective frame 37 is fixedly connected to the box body 40. The right end of the box body 40 is provided with a manual button operation panel 50 (the panel is equipped with a resettable action counter to count each gear shift action of the mechanism box. The remote control / local control is a selection button, and 1-N and N-1 are increase and decrease operation buttons. The tap changer can also be increased or decreased by remote control or local manual button operation). The rear end face of the box body 40 is located on the side of the protective frame 37 and is provided with a multi-pin interface socket 47. The rear end face of the box body 40 is located inside the protective frame 37 and is provided with a step assembly. The interior of the box body 40 is provided with a programmable switch assembly. The hand-crank module includes a hand-crank shell base 15 installed at the right end of the box base 7. A hand-crank handle 51 is provided at the front end of the hand-crank shell base 15. The hand-crank handle 51 and the hand-crank shell base 15 are connected through a socket assembly. A power-off switch 19 is provided at the rear end of the surface of the hand-crank shell base 15.

[0020] See also Figure 3 and Figure 5 、 Figure 6 、 Figure 7 The bottom of the front end of the reduction gearbox is rotatably connected to the guard frame 37. The front ends of the mounting seat 3 and the box seat 7 are both equipped with static hinges. The bottom of the rear end of the guard frame 37 is fixedly equipped with a dynamic hinge. The two ends of the static hinge and the dynamic hinge are rotatably connected. The box body 40 can be flipped over by the rotation connection of the hinge. A chain belt 48 is provided between the left end of the guard frame 37 and the left end of the output module housing 21. When the box body 40 is flipped over, the chain belt 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 fitted, the hand screw 49 is tightened and fixed.

[0021] In this embodiment, the output power of the reversible motor 1 can drive the rotation of the output shaft 20 after the reduction transmission of the worm gear 4 and the worm 5, thereby driving the tap changer gear switch to adjust and switch the voltage of the outdoor transformer, and is driven by the step-down component to make the programmable switch component synchronously follow the change and indicate the gear position in real time. The multi-module combination structure facilitates maintenance and care.

[0022] See also Figure 4 and Figure 5 、 Figure 6 、 Figure 8 The shaft end 29 and the drive interface 6 are engaged 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 loss of lubricating oil in the output module housing 21.

[0023] In this embodiment, the isolation protection of the output module housing 21 increases the sealing performance, reduces the loss of lubricating oil, makes the internal transmission more accurate and smooth, and improves the practicality.

[0024] See also Figure 5-Figure 11 The limit brake assembly includes a limit brake disc 26 and a secondary bevel gear 27 fixedly mounted on the surface of the output shaft 20. The interior of the output module housing 21 is located on the side of the secondary bevel gear 27 and is meshed with a main bevel gear 28. The main bevel gear 28 is provided with a transmission shaft 22. 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 bevel gear 27 and the main bevel gear 28 can transmit power to the transmission shaft 22. The front end of the output module housing 21 is located on the side of the transmission shaft 22 and is installed. There is a brake pin 24, the front end of the brake pin 24 extends to the outside of the output module housing 21 and is equipped with a pulley 25. 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 notch, and the surface of the brake pin 24 is covered with a connecting sleeve; the connecting sleeve is fixedly connected to the output module housing 21, and the connecting sleeve and the brake pin 24 are slidingly connected. The surface of the brake pin 24 is located in the connecting sleeve and is provided with a convex disc, and a connecting spring is provided between the convex disc and the connecting sleeve. Through the elasticity of the connecting spring, the brake pin 24 has a certain movable gap, and when the rear end of the brake pin 24 enters the notch, a limiting engagement is formed on the limiting brake disc 26.

[0025] In this embodiment, when the output shaft 20 rotates, the transmission of the secondary bevel gear 27 and the main bevel gear 28 can drive the transmission shaft 22 to rotate synchronously, and the docking of the guide interface 23 facilitates the flipping of the front box body 40 for easy inspection and maintenance.

[0026] See also Figure 3 and Figure 5 、 Figure 7The shifting assembly includes a shifting plate 33 rotatably mounted on the rear end of the box body 40 through a disk shaft 38, and the rear end of the box body 40 is located on the side of the shifting plate 33 and is rotatably mounted with a guide wheel 31 through a wheel shaft 32. The surface of the guide wheel 31 is provided with a protruding tooth, and the tooth and the surface of the shifting plate 33 are in contact with each other. A connecting block is provided on the end of the wheel shaft 32. The wheel shaft 32 is meshed with the guide interface 23 through the interface. When the transmission shaft 22 rotates, it can be driven synchronously. As the guide wheel 31 rotates, the surface of the shifting plate 33 is provided with openings distributed in a ring array, and the rear end surface of the box body 40 is provided with elastic balls, which engage with the openings. When the guide wheel 31 rotates one circle, the teeth shift the shifting plate 33 to move one gear; the upper and lower sides of the surface of the shifting plate 33 are fixedly installed with an upper limit slider 35 and a lower limit slider 36 respectively. The upper limit slider 35 and the lower limit slider 36 are both designed with a trapezoidal structure, and the pulley 25 is attached to the side of the shifting plate 33.

[0027] In this embodiment, after the power is transmitted to the shifting assembly, the guide wheel 31 can be driven to rotate. When the shifting plate 33 is turned, 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 adapt to the limit brake disc 26, thereby realizing reliable limit braking at the starting end or the end end, ensuring that the tap changer does not exceed the limit.

[0028] See also Figure 1 and Figure 2 、 Figure 5 、 Figure 7 The program-controlled switch assembly includes an indicator panel 46 installed on the front surface of the box body 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 indication of switching operation, and the large pointer 42 is used to display the gear 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 disk shaft 38. A main control board 45 is provided on the rear side of the indicator panel 46 inside the box body 40. A guide dial program-controlled switch 43 and a gear dial program-controlled switch 44 are respectively provided on the front side of the main control board 45. The guide dial program-controlled switch 43 is fixed to the wheel axle 32, and the gear dial program-controlled switch 44 is fixed to the disk shaft 38.

[0029] In this embodiment, the small pointer 41 and the large pointer 42 can move together to indicate the gear position, which is convenient for people to check simultaneously.

[0030] See also Figure 1 、 Figure 2 、 Figure 12 、 Figure 13 and Figure 14The socket assembly includes an insertion port sleeve 10 installed on the hand-crank shell seat 15, and a drive shaft 11 is slidably installed inside the insertion port sleeve 10. The front end of the drive shaft 11 is provided with a docking end, and the surface of the docking end is provided with a snap-fitting groove. The rear end of the drive shaft 11 extends to the outer side of the hand-crank shell seat 15 and is provided with a contact wheel 18. The rear end of the drive shaft 11 and the hand-crank shell seat 15 are slidably connected through a guide sleeve. The surface of the drive shaft 11 is located on the inner side of the hand-crank shell seat 15 and is fixedly installed with a bevel gear 2 14, and the bevel gear 2 14 and the guide sleeve are movably connected by a limit spring 16. The bevel gear 2 14 and the bevel gear 1 9 are meshed and connected. When the bevel gear 2 14 and the bevel gear 1 9 are meshed, the power of the worm 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 port sleeve 10 are sleeve-connected, and the end of the insertion seat is provided with a through slot for connecting with the drive shaft 11, and a snap-fitting groove is provided in the through slot. When the lever 12 is in engagement with the engagement member 12, the lever 12 is engaged with the engagement member 12, and the lever 12 is engaged with the engagement member 12, and the lever 12 is engaged with the engagement member 12, and the lever 12 is engaged with the engagement member 12, and the lever 12 is engaged with the engagement member 12, and the lever 12 is engaged with the engagement member 12, and the lever 1 is engaged with the engagement member 12, and the lever 1 is engaged with the engagement member 12, and the lever 1 is engaged with the engagement member 1

[0031] In this embodiment, when manual drive operation is required, the hand crank handle 51 can be inserted into the insertion port sleeve 10, and after being aligned with the internal drive shaft 11, it can be pushed inward until the bevel gear 2 14 is engaged with the bevel gear 1 9 and cannot be pushed forward and is locked by the non-return tongue pin 12. During the advancement of the hand crank handle 51, the power-off switch 19 will be triggered to disconnect, thereby automatically disconnecting the power supply of the reversible motor 1, ensuring that the reversible motor 1 is in a safe power-off state during manual drive. Shaking the hand crank handle 51 can directly drive the worm 5 and worm wheel 4 in the reduction gear box to rotate, thereby driving the output shaft 20 to rotate. After the manual drive operation, the outer jacket of the hand crank drive insertion port sleeve 10 can be released by slightly twisting the outer jacket. Under the action of the internal spring 16, the bevel gear 2 14 is disengaged from the bevel gear 1 9, and the hand crank handle 51 is also withdrawn by the limit spring 16, and the power-off switch 19 is also restored to conduction.

[0032] Working principle: When the grid voltage changes, the remote voltage regulation command sent by the control room is sent to the programmable control box 40. According to the obtained command, the logic judgment and control drive output are given to the reversible motor 1 to drive the worm 5 to operate. After the worm gear 4 is decelerated and increased in force, the output shaft 20 drives the tap changer gear switch through the external transmission rod of the mechanism box to regulate and switch the outdoor transformer voltage. At the same time, the main bevel gear 28 on the output shaft 20 is transmitted to the conduction shaft 22 of the auxiliary bevel gear 27, the guide interface 23 to the wheel shaft 32, and then to the guide wheel 31 on the coaxial axis, and then extended into the guide dial programmable switch 43 in the programmable control box to make synchronous follow-up changes to the carry. A small pointer 41 is provided at the top of the wheel shaft 32 to indicate the switching operation of the guide wheel 31. The disk shaft 38 of the shift disk 33 also extends into the programmable control box to drive the gear dial programmable switch 44 to control the gear selection program. A large pointer 42 is provided at the top of the disk shaft 38 to indicate the real-time gear position of the tap changer. It can also be combined with manual operation, where a person performs manual operation through a hand crank 51 . When the hand crank 51 is inserted into the insertion port sleeve 10 , a power-off protection can be formed through the power-off switch 19 .

[0033] Through the above steps, the output power of the reversible motor 1 can drive the rotation of the output shaft 20 after the reduction transmission of the worm gear 4 and the worm 5, thereby driving the tap changer gear switch to adjust and switch the outdoor transformer voltage, and is driven by the step-down component to make the programmable switch component synchronously follow the change and indicate the gear position in real time. The multi-module combination structure is convenient for maintenance and repair, so as to solve the problem that the existing mechanism box adopts a mechanical limit device, resulting in a complex structure with many components and the need for repeated adjustments.

[0034] The above are merely preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention should be determined by the scope defined in the claims. Persons skilled in the art will appreciate that improvements and modifications may be made without departing from the spirit and scope of the present invention, and such improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A novel modular combined drive mechanism, characterized by: The invention comprises a reduction box composed of a mounting seat (3) and a box seat (7), wherein an output feedback module is provided at the upper end of the reduction box, a program control module is provided at the front side of the output feedback module, and a hand crank module is provided at the side of the program control module; The mounting seat (3) and the box seat (7) are detachably connected by bolts, a reversible motor (1) is fixedly mounted on the surface of the mounting seat (3), a worm wheel (4) and a worm (5) meshing with each other are provided inside the box seat (7), an output end of the reversible motor (1) and one end of the worm (5) are connected and fixed, the reversible motor (1) is used to drive the worm (5) to rotate, and the meshing of the worm (5) and the worm wheel (4) can realize a reduction transmission, a bevel gear (9) is provided at the other end of the worm (5), and the two ends of the worm wheel (4) are respectively connected to the box seat (7) by rotation, and a drive interface (6) is provided on the top of the shaft extending to the outside of the box seat (7), and a keyway for connection is provided in the drive interface (6); The output feedback module includes an output module housing (21) connected to the upper end of the box seat (7), an output shaft (20) is provided on the top of the output module housing (21), the output shaft (20) passes 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, and a limit brake assembly is provided inside the output module housing (21); The program-controlled module includes a guard frame (37) mounted on the front side of the box seat (7), the front end of the guard frame (37) is fixedly connected to the box body (40), the right end of the box body (40) is provided with a manual button operation panel (50), the rear end face of the box body (40) is located on the side of the guard frame (37) and is provided with a multi-pin interface socket (47), the rear end face of the box body (40) is located on the inner side of the guard frame (37) and is provided with a step assembly, and the interior of the box body (40) is provided with a program-controlled switch assembly; The hand-crank module includes a hand-crank shell seat (15) installed at the right end of the box seat (7), a hand-crank handle (51) is provided at the front end of the hand-crank shell seat (15), the hand-crank handle (51) and the hand-crank shell seat (15) are connected through a socket assembly, and a power-off switch (19) is provided at the rear end of the surface of the hand-crank shell seat (15).

2. A novel modular combined drive mechanism according to claim 1, characterized in that: The bottom of the front end of the reduction box is rotatably connected to the guard frame (37), the front ends of the mounting seat (3) and the box seat (7) are both installed with static hinges, and the bottom of the rear end of the guard frame (37) is fixedly installed with a dynamic hinge. The two ends of the static hinge and the dynamic hinge are rotatably connected. Through the rotation connection of the hinge, the box body (40) can be turned over. A chain belt (48) is provided between the left end of the guard frame (37) and the left end of the output module housing (21). When the box body (40) is turned over, the chain belt (48) is connected and limited. A hand screw (49) is installed on the top of the guard frame (37). After the front ends of the guard frame (37) and the output module housing (21) are fitted, the hand screw (49) is tightened and fixed.

3. A novel modular combined drive mechanism according to claim 1, characterized in that: The shaft end (29) and the drive interface (6) are engaged 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 being lost.

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 bevel gear (27) fixedly mounted on the surface of the output shaft (20); a main bevel gear (28) is mounted on the side of the secondary bevel gear (27) in the interior of the output module housing (21) and meshed with the main bevel gear (28); a transmission shaft (22) is provided on the main bevel gear (28); both ends of the transmission shaft (22) are rotatably connected to the front and rear sides of the output module housing (21); a 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 bevel gear (27) and the main bevel gear (28) can transmit power to the transmission shaft (22).

5. A novel modular combined drive mechanism according to claim 4, characterized in that: The front end of the output module housing (21) is located on the side of the transmission shaft (22) and is equipped with a brake pin (24). The front end of the brake pin (24) extends to the outside of the output module housing (21) and is equipped with a pulley (25). Both sides of the surface of the limit brake disc (26) are provided with notches. The rear end of the brake pin (24) is adapted to the notch, and a connecting sleeve is provided 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 convex disc in the connecting sleeve, and a connecting spring is provided between the convex disc and the connecting sleeve. Due to the elasticity of the connecting spring, the brake pin (24) has a certain movable gap, and 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 shifting assembly includes a shifting plate (33) which is rotatably mounted on the rear end of the box body (40) via a plate shaft (38), and a guide wheel (31) is rotatably mounted on the rear end of the box body (40) at the side of the shifting plate (33) via a wheel shaft (32). The surface of the guide wheel (31) is provided with a protruding tooth, and the tooth and the surface of the shifting plate (33) are fitted together. The end of the surface of the wheel shaft (32) is provided with a connecting block. The wheel shaft (32) is meshed with the guide interface (23) through an interface. When the transmission shaft (22) rotates, the guide wheel (31) can be synchronously driven to rotate. The surface of the shifting plate (33) is provided with openings distributed in a ring array, and the rear end surface of the box body (40) is provided with an elastic ball. The elastic ball and the opening are engaged with each other. When the guide wheel (31) rotates one circle, the tooth drives the shifting plate (33) to move one gear position. An upper limit slider (35) and a lower limit slider (36) are fixedly mounted on the upper and lower sides of the surface of the step disk (33), respectively. The upper limit slider (35) and the lower limit slider (36) are both designed in a trapezoidal structure, and the pulley (25) is attached to the side of the step disk (33).

7. A novel modular combined drive mechanism according to claim 1, characterized in that: The program-controlled switch assembly includes an indicator panel (46) mounted on the front surface of the box body (40), and 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 indication of the switching operation, and the large pointer (42) is used to display the gear indication, the small pointer (41) is connected to the front end of the wheel shaft (32), and the large pointer (42) is connected to the front end of the disk shaft (38), and a main control board (45) is provided on the rear side of the indicator panel (46) inside the box body (40), and a guide dial program-controlled switch (43) and a gear dial program-controlled switch (44) are respectively provided on the front side of the main control board (45), the guide dial program-controlled switch (43) and the wheel shaft (32) are connected and fixed, and the gear dial program-controlled switch (44) and the disk shaft (38) are connected and fixed.

8. A novel modular combined drive mechanism according to claim 1, characterized in that: The socket assembly includes an insertion port sleeve (10) mounted on a hand-crank shell seat (15), a drive shaft (11) is slidably mounted inside the insertion port sleeve (10), a butt end is provided at the front end of the drive shaft (11), a locking groove is provided on the surface of the butt end, a rear end of the drive shaft (11) extends to the outside of the hand-crank shell seat (15) and is provided with a contact wheel (18), the rear end of the drive shaft (11) and the hand-crank shell seat (15) are slidably connected through a guide sleeve, a bevel gear 2 (14) is fixedly mounted on the surface of the drive shaft (11) located on the inner side of the hand-crank shell seat (15), and the bevel gear 2 (14) and the guide sleeve are movably connected through a limit spring (16), the bevel gear 2 (14) and the bevel gear 1 (9) are meshed and connected, and when the bevel gear 2 (14) and the bevel gear 1 (9) are meshed, the power of the worm (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) is composed of an insertion seat and a handle. The insertion seat and the insertion port sleeve (10) are sleeve-connected, and a through slot for connecting to the drive shaft (11) is provided at the end of the insertion seat. A snap-fit rod is provided in the through slot. When the insertion seat is inserted, the snap-fit rod enters the snap-fit slot to form a connection limit. When the person turns the hand crank (51), the drive shaft (11) can be synchronously driven to rotate. A check tongue pin (11) is slidably installed on the outer wall of the insertion port sleeve (10). 2), the lower end of the non-return tongue pin (12) extends to the inner side of the insertion port sleeve (10), and a groove that can engage with the lower end of the non-return tongue pin (12) is opened on the insertion seat. When the insertion seat is inserted into the insertion port sleeve (10), the non-return tongue pin (12) and the groove form a limit for the insertion seat. A spring (13) is installed on the non-return tongue pin (12), and the end of the spring (13) away from the non-return 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 paddle for controlling opening and closing, and the surfaces of the contact wheel (18) and the switch paddle are in contact with each other. 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, the switch paddle can be pushed to disconnect the power supply of the reversible motor (1).

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