Gear box structure for pedal motor

Abstract

The invention relates to the technical field of gear boxes, in particular to a gear box structure for a pedal motor, which comprises a fixed shell, a main body structure, a disassembly structure, a positioning structure, a circulating oil supplementing structure and a purification structure, kinetic energy of the pedal motor is transmitted to the pedal rear wheel through the main body structure, the bearing is mounted and dismounted through the dismounting structure, and the bearing mounting and dismounting convenience is improved; the positioning structure is matched with the driven shaft to position the mounting shell, so that the mounting holes in the mounting shell can be quickly aligned with the mounting holes in the fixed shell, and subsequent mounting bolt fixation is facilitated; purified lubricating oil in the gearbox is recycled through the circulating oil supplementing structure, the utilization rate of the lubricating oil is increased, waste of the lubricating oil is reduced, meanwhile, automatic oil supplementing according to the change of the oil amount in the gearbox is facilitated, the problem of insufficient lubrication or excessive lubrication is avoided, and the maintenance cost is reduced; impurities and metal scraps in lubricating oil are filtered and adsorbed through the purification structure, the stability of the gearbox is improved, and the service life of the gearbox is prolonged.

Description

Technical Field

[0001] This invention relates to the field of gearbox technology, specifically to a gearbox structure for a pedal motor. Background Technology

[0002] Electric car pedals typically refer to pedals that automatically extend or retract via a motor and transmission mechanism, providing convenience for getting in and out of high-chassis vehicles. To protect the transmission mechanism, the transmission mechanism of the pedal motor is usually located inside the gearbox.

[0003] However, the current plate motor gearboxes are poorly designed in terms of bearing installation and disassembly. During installation, the bearing and gearbox components require high precision and are difficult to operate. It often takes a lot of time and effort to ensure proper installation and is prone to subsequent failures due to improper installation. During disassembly, because the bearing is tightly engaged with the mounting part and there is a lack of effective disassembly structure, it is often necessary to use external force to forcibly disassemble it. This can not only easily damage the bearing itself, but may also damage other components of the gearbox. The mounting holes of the mounting shell and the fixed shell are difficult to align quickly and accurately. Operators usually have to rely on experience and repeated adjustments to install them. During installation, the operator needs to hold the mounting shell to install the bolts, which results in low installation efficiency. The gearbox for pedal motors uses a simple one-time lubrication method or a periodic manual lubrication method. One-time lubrication cannot meet the needs of long-term stable operation of the gearbox. As the usage time increases, the lubricating oil is gradually consumed and deteriorates, and cannot provide a good lubrication effect, which leads to accelerated gear wear. Periodic manual lubrication is not only cumbersome to operate and requires stopping the machine, affecting the normal use of the equipment, but it is also difficult to accurately control the amount of oil according to the actual working condition of the gearbox, which can easily lead to insufficient or excessive lubrication. During gearbox operation, various impurities and metal shavings will mix into the lubricating oil. Most existing gearboxes lack effective lubricating oil purification measures and cannot remove these impurities and metal shavings in a timely manner. Over time, impurities and metal shavings accumulate in the lubricating oil, which will seriously affect the performance of the lubricating oil, aggravate gear wear, and reduce the transmission efficiency of the gearbox. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a gearbox structure for a pedal motor.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a gearbox structure for a pedal motor, including a fixed shell, a main structure disposed on the fixed shell, a disassembly structure disposed on the main structure, a positioning structure disposed on the fixed shell, a circulating oil replenishment structure disposed on the fixed shell, and a purification structure disposed on the circulating oil replenishment structure; The main structure includes a fixed base and a bearing. Three fixed bases are fixedly connected to the fixed shell. An mounting shell is installed on the fixed shell. Three fixed bases are correspondingly provided on the mounting shell. An oil bearing is installed inside the fixed base. The disassembly structure includes a slip ring and a slider. The slip ring is slidably connected inside the fixed seat. The slip ring abuts against the bottom end of the bearing. Two sliders are fixedly connected to the slip ring. A slider is fixedly connected to a slide rod. The slide rod is slidably connected to the fixed seat. A screw is threadedly connected to one of the slide rods on the same fixed seat. The screw is rotatably connected to the fixed seat.

[0006] Specifically, each of the mounting bases has two fixing plates fixedly connected to it by screws, and the fixing plates abut against the top of the bearing.

[0007] Specifically, a drive shaft is rotatably connected to the fixed housing. Two bearings on the fixed housing and the mounting housing are in a set. The drive shaft is rotatably connected to a set of bearings. A first gear is fixedly connected to the drive shaft. A rotating shaft is rotatably connected between a set of bearings located in the central part of the fixed housing and the mounting housing. A second gear is fixedly connected to the rotating shaft. The second gear meshes with the first gear. A third gear is fixedly connected to the rotating shaft. A driven shaft is rotatably connected to another set of bearings. The driven shaft passes through the mounting housing. A fourth gear is fixedly connected to the driven shaft. The fourth gear meshes with the third gear.

[0008] Specifically, the radius of the second gear is greater than the radius of the first gear, and the radius of the fourth gear is greater than the radius of the third gear.

[0009] Specifically, a sealing gasket is provided between the fixed housing and the mounting housing, and oil seals are fitted on the outside of both the drive shaft and the driven shaft, with the oil seals located inside the fixed seat.

[0010] Specifically, the positioning structure includes a positioning sleeve and a positioning rod. The positioning sleeve is fixedly connected inside the fixed shell, and the positioning rod is fixedly connected on the mounting shell. The positioning rod is inserted into the positioning sleeve.

[0011] Specifically, the positioning rod has two symmetrically rolling balls connected to it, the positioning sleeve has two arc-shaped limiting grooves inside, the balls abut against the limiting grooves, and the positioning rod has two springs inside, one end of the spring is fixedly connected to the positioning rod, and the other end of the spring abuts against the balls.

[0012] Specifically, the circulating oil replenishment structure includes a first solenoid valve and a connecting pipe. The first solenoid valve is installed at the bottom of the fixed shell, a purification structure is installed at the bottom of the first solenoid valve, and a connecting pipe is installed at the bottom of the purification structure. A fixed frame is fixedly connected to the top of the fixed shell, an oil box is fixedly connected to the fixed frame, a booster pump is fixedly connected to the bottom of the oil box, the connecting pipe is fixedly connected to the inlet end of the booster pump, an oil delivery pipe is fixedly connected to the output end of the booster pump, the oil delivery pipe is fixedly connected to the oil box, a second solenoid valve is installed between the oil box and the fixed shell, a liquid level sensor is installed inside the fixed shell, and a screw cap is threaded onto the oil box.

[0013] Specifically, the purification structure includes a purification shell and a purification cover. The purification shell is threadedly connected to the first solenoid valve. The purification cover is fixedly connected to the bottom end of the purification shell. The bottom end of the purification cover is threadedly connected to a connecting pipe. Two magnets are inserted into the purification shell. A filter screen is provided on the purification cover.

[0014] Specifically, four fixing posts are fixedly connected to the purification shell, and four screws are rotatably connected to the purification cover. The screws are threadedly connected to the fixing posts, and a sealing ring is installed between the purification cover and the purification shell.

[0015] The beneficial effects of this invention are: (1) The gearbox structure for a pedal motor described in this invention has a main structure inside the fixed shell, and a disassembly structure on the main structure. The kinetic energy of the pedal motor is transmitted to the rear wheel of the pedal through the main structure. The bearing is installed and disassembled through the disassembly structure, which improves the convenience of installing and disassembling the bearing, and at the same time improves the stability of the bearing, avoiding the problem of the bearing being difficult to remove due to excessive tightness of the bearing.

[0016] (2) The gearbox structure for a pedal motor described in this invention has a positioning structure on the fixed shell. The positioning structure, in conjunction with the driven shaft, positions the mounting shell so that the mounting holes on the mounting shell can be quickly aligned with the mounting holes on the fixed shell, which facilitates subsequent bolt fixing.

[0017] (3) The gearbox structure for pedal motor described in this invention has a circulating oil replenishment structure on the fixed shell, which facilitates the use of the purified lubricating oil in the gearbox through the circulating oil replenishment structure, thereby improving the utilization rate of lubricating oil and reducing the waste of lubricating oil. At the same time, it is convenient to automatically replenish oil according to the change of oil volume in the gearbox, avoiding the problem of insufficient or excessive lubrication and reducing maintenance costs.

[0018] (4) The gearbox structure for a pedal motor described in this invention has a purification structure on the circulating oil replenishment structure. The purification structure filters and adsorbs impurities and metal scraps in the lubricating oil, thereby preventing metal scraps in the lubricating oil from affecting gear meshing and preventing metal scraps from causing wear on gear meshing, thus improving the stability and service life of the gearbox. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of a gearbox for a pedal motor provided by the present invention; Figure 2 for Figure 1 The diagram shown is an enlarged view of the structure of part A. Figure 3 for Figure 1 The diagram shown is an enlarged view of the structure of section B. Figure 4 This is a schematic diagram of the connection structure between the fixed shell and the main body structure of the present invention; Figure 5 for Figure 4 The diagram shows an enlarged view of section C. Figure 6 A schematic diagram of the connection structure between the driven shaft and the fourth gear of the present invention; Figure 7 for Figure 6 The diagram shown is an enlarged view of the structure of part D. Figure 8 This is a schematic diagram of the connection structure between the fixed shell and the positioning structure of the present invention; Figure 9 for Figure 8 The diagram shown is an enlarged view of the structure of part E. Figure 10 This is a schematic diagram of the connection structure between the purification structure and the connecting pipe of the present invention; Figure 11 This is a schematic diagram of the connection structure between the screw and the fixing post of the present invention; Figure 12 for Figure 11 The diagram shows an enlarged view of the F-section structure.

[0021] In the diagram: 1. Fixed housing; 2. Main structure; 201. Fixed base; 202. Bearing; 203. Drive shaft; 204. First gear; 205. Rotating shaft; 206. Second gear; 207. Third gear; 208. Driven shaft; 209. Fourth gear; 210. Oil seal; 211. Sealing gasket; 212. Mounting housing; 3. Disassembly structure; 301. Slip ring; 302. Slider; 303. Slide rod; 304. Screw; 305. Fixing plate; 4. Positioning structure; 401. Positioning sleeve; 40 2. Positioning rod; 403. Ball bearing; 404. Limiting groove; 405. Spring; 5. Circulating oil replenishment structure; 501. First solenoid valve; 502. Connecting pipe; 503. Fixing bracket; 504. Oil box; 505. Booster pump; 506. Oil delivery pipe; 507. Second solenoid valve; 508. Cap; 509. Liquid level sensor; 6. Purification structure; 601. Purification shell; 602. Purification cover; 603. Filter screen; 604. Magnet; 605. Sealing ring; 606. Fixing column; 607. Screw. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 10 As shown, the gearbox structure for a pedal motor according to the present invention includes a fixed shell 1, a main structure 2 disposed on the fixed shell 1, a disassembly structure 3 disposed on the main structure 2, a positioning structure 4 disposed on the fixed shell 1, a circulating oil replenishment structure 5 disposed on the fixed shell 1, and a purification structure 6 disposed on the circulating oil replenishment structure 5. The main structure 2 includes a fixed seat 201 and a bearing 202. Three fixed seats 201 are fixedly connected to the fixed shell 1. An mounting shell 212 is installed on the fixed shell 1. Three fixed seats 201 are correspondingly provided on the mounting shell 212. An oil bearing 202 is installed inside the fixed seat 201. The disassembly structure 3 includes a slip ring 301 and a slider 302. The slip ring 301 is slidably connected inside the fixed base 201. The slip ring 301 abuts against the bottom end of the bearing 202. Two sliders 302 are fixedly connected to the slip ring 301. A sliding rod 303 is fixedly connected to the slider 302. The sliding rod 303 is slidably connected to the fixed base 201. A screw 304 is threadedly connected to one of the sliding rods 303 on the same fixed base 201. The screw 304 is rotatably connected to the fixed base 201.Each of the fixed bases 201 is fixedly connected to two fixing plates 305 by screws, and the fixing plates 305 abut against the top of the bearings 202; a drive shaft 203 is rotatably connected to the fixed housing 1; two bearings 202 on the fixed housing 1 and the mounting housing 212 are grouped together; the drive shaft 203 is rotatably connected to a group of bearings 202; a first gear 204 is fixedly connected to the drive shaft 203; a rotating shaft 205 is rotatably connected between a group of bearings 202 located in the central part of the fixed housing 1 and the mounting housing 212; a second gear 206 is fixedly connected to the rotating shaft 205; the second gear 206 meshes with the first gear 204; the rotating shaft 205... A third gear 207 is fixedly connected to shaft 205. A driven shaft 208 is rotatably connected to another set of bearings 202. The driven shaft 208 passes through the mounting housing 212. A fourth gear 209 is fixedly connected to the driven shaft 208, and the fourth gear 209 meshes with the third gear 207. The radius of the second gear 206 is larger than the radius of the first gear 204, and the radius of the fourth gear 209 is larger than the radius of the third gear 207. A sealing gasket 211 is provided between the fixed housing 1 and the mounting housing 212. Oil seals 210 are fitted on the outside of both the drive shaft 203 and the driven shaft 208. The oil seals 210 are located inside the fixed seat 201.Bearings 202 are installed on multiple mounting bases 201, with the bottom end of the bearing 202 abutting against the slip ring 301. Two fixing plates 305 are fixed to each mounting base 201 with screws, ensuring that the fixing plates 305 tightly abut against the top end of the bearing 202, thus completing the installation of the bearing 202. The drive shaft 203 is installed on the scooter bracket. Then, the fixing housing 1 is passed through the drive shaft 203 to ensure that the drive shaft 203 rotates flexibly. The fixing housing 1 is then fixed to the rear wheel bracket of the scooter. The first gear 204 is then firmly fixed to the drive shaft 203. A rotating shaft 205 is installed between a set of bearings 202 in the central part of the fixing housing 1 and the mounting housing 212. To ensure proper meshing between the second gear 206 and the first gear 204 on the rotating shaft 205, the driven shaft 208 is installed on another set of bearings 202. The fourth gear 209 on the driven shaft 208 is then properly meshed with the third gear 207 on the rotating shaft 205. After installation, a sealing gasket 211 is installed between the fixed housing 1 and the mounting housing 212. An oil seal 210 is fitted over the drive shaft 203 and the driven shaft 208, and the oil seal 210 is installed inside the fixed seat 201 to prevent lubricating oil leakage. The through hole on the mounting housing 212 is aligned with the driven shaft 208. Simultaneously, after the positioning structure 4 is aligned, the mounting housing 212 is inserted, ensuring proper meshing between the mounting housing 212 and the driven shaft 208. The mounting housing 212 aligns with the hole on the fixed housing 1 after contacting the sealing gasket 211. Bolts are then added to secure the mounting housing 212, thus completing the installation of the gearbox fixed housing 1, internal components, and mounting housing 212. When disassembly is required for internal gear maintenance, the mounting housing 212 can be opened, and the gear removed. If maintenance or replacement of bearing 202 is needed, the retaining plate 305 is removed, releasing the top of bearing 202. The screw 304 is turned using a hex wrench, causing the sliding rod 303, slider 302, and slip ring 301 to slide upwards. The slip ring 301 contacts the bottom of bearing 202, thereby moving bearing 202. 02. The bearing 202 can be removed for inspection, cleaning, or replacement by ejecting it. This prevents the bearing 202 from being forced out due to overtight installation, thus avoiding damage to the gearbox. When the pedal motor starts, it drives the drive shaft 203 to rotate. The first gear 204 on the drive shaft 203 rotates accordingly. Since the second gear 206 meshes with the first gear 204, the second gear 206 drives the rotating shaft 205 to rotate. The third gear 207 on the rotating shaft 205 then rotates, and the fourth gear 209, which meshes with the third gear 207, also rotates. This, in turn, drives the driven shaft 208 to rotate, transmitting power to the rear wheel of the pedal, enabling the pedal to operate normally.

[0024] Specifically, such as Figure 8 and Figure 9As shown, the positioning structure 4 includes a positioning sleeve 401 and a positioning rod 402. The positioning sleeve 401 is fixedly connected inside the fixed shell 1, and the positioning rod 402 is fixedly connected to the mounting shell 212. The positioning rod 402 is inserted into the positioning sleeve 401. Two balls 403 are symmetrically and rollingly connected to the positioning rod 402. The positioning sleeve 401 has two arc-shaped limiting grooves 404 inside, and the balls 403 abut against the limiting grooves 404. The positioning rod 402 has two springs 405 inside, and one end of each spring 405 is fixed to the positioning rod 402. The other end of the spring 405 abuts against the ball 403. When installing the mounting shell 212, the positioning rod 402 is inserted into the positioning sleeve 401. The ball 403 on the positioning rod 402 will abut tightly against the limiting groove 404 inside the positioning sleeve 401 under the action of the spring 405. At the same time, the driven shaft 208 passes through the mounting shell 212. The driven shaft 208 and the positioning rod 402 are aligned in a straight line. Therefore, the mounting shell 212 will not rotate freely after being inserted. The operator does not need to hold the mounting bolts of the mounting shell 212, which improves the convenience of installing the mounting shell 212.

[0025] Specifically, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 10 and Figure 11As shown, the circulating oil replenishment structure 5 includes a first solenoid valve 501 and a connecting pipe 502. The first solenoid valve 501 is installed at the bottom of the fixed housing 1, and a purification structure 6 is installed at the bottom of the first solenoid valve 501. The connecting pipe 502 is installed at the bottom of the purification structure 6. A fixing bracket 503 is fixedly connected to the top of the fixed housing 1. An oil box 504 is fixedly connected to the fixing bracket 503. A booster pump 505 is fixedly connected to the bottom of the oil box 504. The connecting pipe 502 is fixedly connected to the inlet end of the booster pump 505. The output end of the booster pump 505 is fixedly connected to an oil delivery pipe 506, which is fixedly connected to an oil box 504. A second solenoid valve 507 is installed between the oil box 504 and the fixed housing 1. A liquid level sensor 509 is installed inside the fixed housing 1. A screw cap 508 is threaded onto the oil box 504. During gearbox operation, the liquid level sensor 509 monitors the lubricating oil level in the fixed housing 1 in real time. When the liquid level drops to a set lower limit, the liquid level sensor 509 sends a signal to the control terminal, and the second solenoid valve 507... 07 Opens, and the lubricating oil in the oil box 504 is replenished into the fixed housing 1, realizing automatic oil replenishment and circulation of lubricating oil to ensure good lubrication of the gearbox. After the lubricating oil inside the gearbox has been used for a period of time, the control module controls the first solenoid valve 501 to open, and the lubricating oil in the fixed housing 1 flows into the purification structure 6 under the action of gravity. The lubricating oil first passes through the filter screen 603 to remove impurities, and then is attracted by the magnet 604 to remove metal waste. The purified lubricating oil is drawn into the booster pump 505 through the connecting pipe 502. The booster pump 505 pumps the lubricating oil... Pressurized, the oil is sent back to the oil box 504 via the oil pipe 506. At this time, if the liquid level in the fixed shell 1 drops, the second solenoid valve 507 opens, and the purified lubricating oil is replenished into the gearbox. After purification, the first solenoid valve 501 and the second solenoid valve 507 close. By analyzing the sensor data of different areas through the control unit, the solenoid valves of each oil circuit are independently controlled to achieve precise oil replenishment. At the same time, an appropriate amount of lubricating oil that meets the requirements can be injected into the oil box 504 by opening the cap 508 on the oil box 504, and then the cap 508 is tightened.

[0026] Specifically, such as Figure 2 , Figure 10 , Figure 11 and Figure 12As shown, the purification structure 6 includes a purification shell 601 and a purification cover 602. The purification shell 601 is threadedly connected to the first solenoid valve 501. The purification cover 602 is fixedly connected to the bottom end of the purification shell 601, and the bottom end of the purification cover 602 is threadedly connected to the connecting pipe 502. Two magnets 604 are inserted into the purification shell 601, and a filter screen 603 is provided on the purification cover 602. Four fixing posts 606 are fixedly connected to the purification shell 601, and four screws 607 are rotatably connected to the purification cover 602. The screws 607 are threadedly connected to the fixing posts 606, and a sealing ring 605 is installed between the purification cover 602 and the purification shell 601. The purification structure 6 is cleaned periodically by unscrewing the four screws 607 on the purification cover 602, removing the purification cover 602, cleaning the impurities on the filter screen 603 and the metal shavings adsorbed by the magnets 604, and reinstalling the purification cover 602 after cleaning to ensure that the sealing ring 605 is installed in place and to ensure the normal operation of the purification structure 6.

[0027] In use, this invention first involves installing bearings 202 on multiple mounting bases 201, with the bottom end of the bearing 202 abutting against the slip ring 301. Two fixing plates 305 are then fixed to each mounting base 201 with screws, ensuring the fixing plates 305 tightly abut against the top end of the bearing 202, thus completing the installation of the bearings 202. The drive shaft 203 is then mounted on the scooter bracket. Next, the mounting housing 1 passes through the drive shaft 203, ensuring flexible rotation of the drive shaft 203. The mounting housing 1 is then fixed to the rear wheel bracket of the scooter. Finally, the first gear 204 is securely fixed to the drive shaft 203. Between the mounting housing 1 and the mounting housing 212, a set of bearings 202 is positioned at the center. Install the rotating shaft 205, ensuring the second gear 206 on the rotating shaft 205 meshes correctly with the first gear 204. Install the driven shaft 208 on another set of bearings 202, ensuring the fourth gear 209 on the driven shaft 208 meshes well with the third gear 207 on the rotating shaft 205. After installation, install a sealing gasket 211 between the fixed housing 1 and the mounting housing 212. Cover the drive shaft 203 and the driven shaft 208 with an oil seal 210, and install the oil seal 210 inside the fixed seat 201 to prevent lubricating oil leakage. Align the through hole on the mounting housing 212 with the driven shaft 208, and after aligning the positioning structure 4, insert the mounting housing 212 to secure it. The mounting shell 212 abuts against the sealing gasket 211, and the holes on the mounting shell 212 align with the empty spaces on the fixed shell 1. Bolts are then added to secure the mounting shell 212, thus completing the installation of the gearbox fixed shell 1, internal components, and mounting shell 212. When disassembly is required to repair the internal gears, the mounting shell 212 can be opened, and the gears removed. If the bearing 202 needs maintenance or replacement, the retaining plate 305 is removed, releasing the fixation on the top of the bearing 202. The screw 304 is turned using a hex wrench, causing the sliding rod 303, slider 302, and slip ring 301 to slide upwards. The slip ring 301 abuts against the bottom of the bearing 202, thereby... The bearing 202 can be removed for inspection, cleaning, or replacement by ejecting it, thus avoiding the situation where the bearing 202 needs to be hammered out due to overtight installation, which would damage the gearbox. When the pedal motor starts, the motor drives the drive shaft 203 to rotate, and the first gear 204 on the drive shaft 203 rotates accordingly. Since the second gear 206 meshes with the first gear 204, the second gear 206 drives the rotating shaft 205 to rotate, and the third gear 207 on the rotating shaft 205 rotates as well. The fourth gear 209, which meshes with the third gear 207, also rotates, thereby driving the driven shaft 208 to rotate and transmitting power to the rear wheel of the pedal, so that the pedal can work normally. Then, when installing the mounting shell 212, the positioning rod 402 is inserted into the positioning sleeve 401. The ball 403 on the positioning rod 402 will be in close contact with the limiting groove 404 inside the positioning sleeve 401 under the action of the spring 405. At the same time, the driven shaft 208 passes through the mounting shell 212. The driven shaft 208 and the positioning rod 402 are aligned in a straight line. Therefore, the mounting shell 212 will not rotate freely after being inserted. The operator does not need to hold the mounting bolts of the mounting shell 212, which improves the convenience of installing the mounting shell 212. Secondly, during gearbox operation, the level sensor 509 monitors the lubricating oil level in the fixed housing 1 in real time. When the level drops to the set lower limit, the level sensor 509 sends a signal to the control terminal, the second solenoid valve 507 opens, and the lubricating oil in the oil box 504 is replenished into the fixed housing 1, realizing automatic oil replenishment and circulation of lubricating oil to ensure good lubrication of the gearbox. After the lubricating oil inside the gearbox has been used for a period of time, the control module controls the first solenoid valve 501 to open, and the lubricating oil in the fixed housing 1 flows into the purification structure 6 under the action of gravity. The lubricating oil first passes through the filter screen 603 to remove impurities, and then is attracted by the magnet 604 to remove metal waste. After purification, the lubricating oil is drawn into the booster pump 505 through the connecting pipe 502. The booster pump 505 pressurizes the lubricating oil and sends it back to the oil box 504 through the oil delivery pipe 506. At this time, if the liquid level in the fixed shell 1 drops, the second solenoid valve 507 opens, and the purified lubricating oil is replenished into the gearbox. After purification, the first solenoid valve 501 and the second solenoid valve 507 close. By analyzing the sensor data of different areas, the control unit independently controls the on / off of the solenoid valve of each oil circuit to achieve precise oil replenishment. At the same time, the appropriate amount of lubricating oil that meets the requirements can be injected into the oil box 504 by opening the screw cap 508 on the oil box 504 and then tightening the screw cap 508. Finally, clean the purification structure 6 regularly. Unscrew the four screws 607 on the purification cover 602, remove the purification cover 602, clean the impurities on the filter screen 603 and the metal shavings attracted by the magnet 604. After cleaning, reinstall the purification cover 602, ensuring that the sealing ring 605 is installed in place to ensure the normal operation of the purification structure 6.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A gearbox structure for a pedal motor, characterized in that, It includes a fixed shell (1), a main structure (2) provided on the fixed shell (1), a disassembly structure (3) provided on the main structure (2), a positioning structure (4) provided on the fixed shell (1), a circulating oil replenishment structure (5) provided on the fixed shell (1), and a purification structure (6) provided on the circulating oil replenishment structure (5). The main structure (2) includes a fixed seat (201) and a bearing (202). Three fixed seats (201) are fixedly connected to the fixed shell (1). An mounting shell (212) is installed on the fixed shell (1). Three fixed seats (201) are correspondingly provided on the mounting shell (212). An oil bearing (202) is installed inside the fixed seat (201). The disassembly structure (3) includes a slip ring (301) and a slider (302). The slip ring (301) is slidably connected inside the fixed seat (201). The slip ring (301) abuts against the bottom end of the bearing (202). Two sliders (302) are fixedly connected to the slip ring (301). A slider (303) is fixedly connected to the slider (302). The slider (303) is slidably connected to the fixed seat (201). A screw (304) is threadedly connected to one of the sliders (303) on the same fixed seat (201). The screw (304) is rotatably connected to the fixed seat (201).

2. The gearbox structure for a pedal motor according to claim 1, characterized in that: Each of the mounting bases (201) has two mounting plates (305) fixedly connected by screws, and the mounting plates (305) abut against the top of the bearing (202).

3. The gearbox structure for a pedal motor according to claim 1, characterized in that: A drive shaft (203) is rotatably connected to the fixed housing (1). Two bearings (202) on the fixed housing (1) and the mounting housing (212) are a set. The drive shaft (203) is rotatably connected to a set of bearings (202). A first gear (204) is fixedly connected to the drive shaft (203). A rotating shaft (205) is rotatably connected between a set of bearings (202) located in the central part of the fixed housing (1) and the mounting housing (212). A second gear (206) is fixedly connected to the shaft (205), and the second gear (206) meshes with the first gear (204). A third gear (207) is fixedly connected to the shaft (205). A driven shaft (208) is rotatably connected to another set of bearings (202). The driven shaft (208) passes through the mounting housing (212). A fourth gear (209) is fixedly connected to the driven shaft (208), and the fourth gear (209) meshes with the third gear (207).

4. The gearbox structure for a pedal motor according to claim 3, characterized in that: The radius of the second gear (206) is greater than that of the first gear (204), and the radius of the fourth gear (209) is greater than that of the third gear (207).

5. The gearbox structure for a pedal motor according to claim 3, characterized in that: A sealing gasket (211) is provided between the fixed housing (1) and the mounting housing (212). An oil seal (210) is provided on the outside of both the drive shaft (203) and the driven shaft (208). The oil seal (210) is located inside the fixed seat (201).

6. The gearbox structure for a pedal motor according to claim 1, characterized in that: The positioning structure (4) includes a positioning sleeve (401) and a positioning rod (402). The positioning sleeve (401) is fixedly connected inside the fixed shell (1), and the positioning rod (402) is fixedly connected on the mounting shell (212). The positioning rod (402) is inserted into the positioning sleeve (401).

7. The gearbox structure for a pedal motor according to claim 6, characterized in that: Two balls (403) are symmetrically rolled on the positioning rod (402). The positioning sleeve (401) has two arc-shaped limiting grooves (404) inside. The balls (403) abut against the limiting grooves (404). The positioning rod (402) has two springs (405) inside. One end of the spring (405) is fixedly connected to the positioning rod (402), and the other end of the spring (405) abuts against the balls (403).

8. The gearbox structure for a pedal motor according to claim 1, characterized in that: The circulating oil replenishment structure (5) includes a first solenoid valve (501) and a connecting pipe (502). The first solenoid valve (501) is installed at the bottom of the fixed shell (1). A purification structure (6) is installed at the bottom of the first solenoid valve (501). A connecting pipe (502) is installed at the bottom of the purification structure (6). A fixing frame (503) is fixedly connected to the top of the fixed shell (1). An oil box (504) is fixedly connected to the fixing frame (503). The bottom of the oil box (504) is fixed. A booster pump (505) is connected, and the connecting pipe (502) is fixedly connected to the inlet end of the booster pump (505). The output end of the booster pump (505) is fixedly connected to an oil delivery pipe (506). The oil delivery pipe (506) is fixedly connected to an oil box (504). A second solenoid valve (507) is installed between the oil box (504) and the fixed shell (1). A liquid level sensor (509) is installed inside the fixed shell (1). A screw cap (508) is threaded onto the oil box (504).

9. The gearbox structure for a pedal motor according to claim 8, characterized in that: The purification structure (6) includes a purification shell (601) and a purification cover (602). The purification shell (601) is threadedly connected to the first solenoid valve (501). The bottom end of the purification shell (601) is fixedly connected to the purification cover (602). The bottom end of the purification cover (602) is threadedly connected to the connecting pipe (502). Two magnets (604) are inserted into the purification shell (601). The purification cover (602) is provided with a filter screen (603).

10. The gearbox structure for a pedal motor according to claim 9, characterized in that: Four fixing posts (606) are fixedly connected to the purification shell (601), and four screws (607) are rotatably connected to the purification cover (602). The screws (607) are threadedly connected to the fixing posts (606), and a sealing ring (605) is installed between the purification cover (602) and the purification shell (601).

Images