Double-speed-ratio transmission planetary driving gearbox

Abstract

The invention discloses a double-speed-ratio transmission planetary driving gearbox, which relates to the technical field of planetary gearboxes and comprises a pressurizing mechanism, a linkage mechanism and a positioning mechanism. According to the invention, online dynamic speed ratio switching of the planetary gearbox under the continuous operation condition is realized, a set of intelligent execution mechanism based on pneumatic driving and magnetic coupling is integrated in the input shaft, and a power transmission path is quickly changed from a high-speed direct connection mode to a high-speed direct connection mode to a high-speed direct connection mode. The planetary reduction mechanism comprising the sun gear, the planet gear and the gear ring locked by the positioning mechanism is seamlessly switched, the output rotating speed is remarkably reduced finally, the torque is multiplied finally, the whole switching process is smooth and rapid, transmission of input power does not need to be interrupted, and the switching efficiency is improved. The operation efficiency and the self-adaptive capacity of the equipment in the continuous technological process are greatly improved, and production interruption, capacity loss and extra energy consumption caused by frequent start and stop are fundamentally avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of planetary gearboxes, in particular to a dual-speed-ratio transmission planetary drive gearbox. BACKGROUND

[0002] The planetary gearbox is also known as a planetary reduction gearbox or a gearbox, which is a transmission device based on the planetary gear structure. The core is composed of a sun gear, a plurality of planetary gears, an inner ring gear and a planet carrier. The transmission speed ratio is reduced and the torque is amplified through multi-stage planetary gear layout. It has the characteristics of stable transmission, strong bearing capacity, small size, large transmission ratio and high reliability. It is widely used in smart home, medical equipment, automation production, robots and industrial engineering machinery fields.

[0003] Currently, when adjusting the output speed of the traditional planetary gearbox, it is generally necessary to first stop the device completely, and then switch the gear meshing state through mechanical or hydraulic means to change the transmission ratio. This operating mode requires the device to go through the complete process of deceleration, shutdown, gear shifting and restart, which results in additional time consumption for each speed adjustment. For periodic operation devices, such intermittent shutdown will directly prolong the single working cycle period, significantly reducing the production capacity per unit time. For key equipment in continuous production processes, single-point shutdown may even cause the entire production line to shut down, resulting in economic losses such as raw material waste and project delay. In addition, during the frequent start-stop process of the device, the motor needs to overcome the static inertia moment to achieve acceleration, and multiple start-stop will result in a significant decrease in energy utilization, further increasing production costs. SUMMARY

[0004] The purpose of the present application is to provide a dual-speed-ratio transmission planetary drive gearbox to solve the problem of adjusting the speed requiring shutdown in the background art.

[0005] To achieve the above purpose, the present application provides the following technical solution: a dual-speed-ratio transmission planetary drive gearbox, comprising: A pressurizing mechanism for adjusting the output speed of the gearbox; A linkage mechanism for transmitting power and driving other structures to operate; A positioning mechanism for stopping corresponding parts and assisting in speed regulation; The pressing mechanism comprises a closing cover and a micro one-way valve, the inside of the closing cover is fixedly provided with an input shaft, the inside of the closing cover is provided with a gas passage, the micro one-way valve is fixedly provided in the gas passage, the inside of the input shaft is provided with a storage groove, the inside of the storage groove is movably provided with a sliding shaft, the outer wall of the sliding shaft is fixedly provided with a magnet guide, the outer wall of the sliding shaft is movably provided with an output shaft, the inner wall of the output shaft is fixedly provided with a third spring, the inner wall of the output shaft is fixedly provided with a permanent magnet, the input shaft and the output shaft are connected or disconnected through the sliding shaft, so as to control the gear box speed. The positioning mechanism comprises a push ring and a friction plate, one side of the outer wall of the push ring is fixedly provided with a group of guide columns, the friction plate is fixedly installed between the outer walls of the group of guide columns, and the friction plate can lock the part when the friction plate is in contact with the part.

[0006] Preferably, the outer walls of the output shaft and the input shaft are movably provided with a shell, the input end of the shell is fixedly communicated with a cooling lubricating oil input pipe, the output end of the shell is fixedly communicated with a cooling lubricating oil output pipe, the outer wall of the output shaft is fixedly provided with three support frames, the outer walls of the three support frames are movably provided with three planetary gears, and the outer walls of the three planetary gears are meshedly connected with a gear ring.

[0007] Preferably, the outer wall of the gear ring is movably provided in the inside of the shell, the outer wall of the sun gear is fixedly provided on the outer wall of the input shaft, and the outer wall of the sun gear is meshedly connected with the outer walls of the three planetary gears.

[0008] Preferably, the inner wall of the shell is fixedly provided with a fixed ring, the input end of the fixed ring is fixedly communicated with an electric one-way valve, the outer wall of the electric one-way valve is fixedly provided in the inside of the shell, and the outer wall of the input shaft is fixedly communicated with an electric exhaust valve.

[0009] Preferably, the inside of the fixed ring is slidably provided with two sliding blocks, the outer walls of the two sliding blocks are fixedly provided with a first spring, the top of one of the two sliding blocks is fixedly provided with a closing cover, the inner wall of the other of the two sliding blocks is fixedly provided with a first elastic piece at the top, and the bottom of the first elastic piece is fixedly provided with a plug rod.

[0010] Preferably, the inner wall of the fixed ring is provided with a containing cavity at the bottom, the bottom of the inner wall of the containing cavity is fixedly provided with two second springs and an electromagnet, the top of one of the two second springs is fixedly provided with a push plate, and the top of the other of the two second springs is fixedly provided with an iron ball.

[0011] Preferably, the linkage mechanism comprises a sliding ring fixedly sleeved on the outer wall of the sliding shaft, and the outer wall of the sliding ring is fixedly provided with three mounting seats, and the inner wall of each of the three mounting seats is fixedly provided with a first rotating shaft.

[0012] Preferably, the outer wall of each of the three first rotating shafts is movably sleeved with a connecting force arm, and the inner part of each of the three connecting force arms is fixedly provided with a second rotating shaft and a third rotating shaft.

[0013] Preferably, the outer wall of each of the three second rotating shafts is movably sleeved with a fixing frame, the outer wall of each of the three fixing frames is fixedly mounted in the inner part of the shell, and the outer wall of each of the three third rotating shafts is movably sleeved with a pushing wheel.

[0014] Preferably, the inner part of the shell is fixedly provided with a mounting ring, a group of second elastic members are fixedly mounted between the outer wall of the pushing ring and the mounting ring, and the outer wall of a group of guide columns is movably inserted into the inner part of the mounting ring.

[0015] Compared with the prior art, the present application has the following beneficial effects: In the present application, the planetary gear box realizes online dynamic speed ratio switching under continuous operation conditions, integrates an intelligent actuator based on air pressure driving and magnetic coupling in the input shaft, realizes rapid transmission of the power transmission path from the high-speed direct connection mode to the planetary reduction mechanism composed of the sun gear, the planet gear and the locked gear ring by the positioning mechanism, finally realizes significant reduction of the output rotation speed and multiplication of the torque, the whole switching process is smooth and rapid, and the transmission of the input power does not need to be interrupted, which greatly improves the operation efficiency and self-adaptive ability of the equipment in the continuous process, and fundamentally avoids production interruption, production capacity loss and additional energy consumption caused by frequent start and stop.

[0016] In the present application, the present application integrates the lubrication and heat dissipation system with the core speed regulation mechanism, which significantly improves the operation reliability and service life of the gear box under complex conditions. This active cooling and lubrication can timely take away the concentrated heat generated by magnetic eddy current loss, gear meshing and relative motion of friction pairs during speed regulation, effectively prevents local overheating from causing structural thermal deformation, lubricating oil film failure and magnetic performance attenuation of elements, makes the speed switching action always accurate and reliable, and greatly reduces the wear of key moving parts, thereby fundamentally ensuring the durability and stability of the transmission system under high speed, high load and frequent speed regulation conditions. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a front view of the structure of the double-speed-ratio transmission planetary drive gear box of the present application; Figure 2It is a sectional view of the main structure of the double-speed-ratio transmission planetary drive gear box of the present application; Figure 3 It is a sectional view of the pressurizing mechanism of the double-speed-ratio transmission planetary drive gear box of the present application; Figure 4 It is a sectional view of the partial structure of the pressurizing mechanism of the double-speed-ratio transmission planetary drive gear box of the present application; Figure 5 It is an enlarged view of the A structure of the double-speed-ratio transmission planetary drive gear box of the present application; Figure 4 Figure 6 It is a sectional exploded view of the pressurizing mechanism of the double-speed-ratio transmission planetary drive gear box of the present application; Figure 7 It is an enlarged view of the B structure of the double-speed-ratio transmission planetary drive gear box of the present application; Figure 6 Figure 8 It is a three-dimensional schematic view of the linkage mechanism and the positioning mechanism of the double-speed-ratio transmission planetary drive gear box of the present application; Figure 9 It is a plan schematic view of the internal structure of the double-speed-ratio transmission planetary drive gear box of the present application; Figure 10 It is a plan view of another scheme of the double-speed-ratio transmission planetary drive gear box of the present application.

[0018] In the figure: 1, pressurizing mechanism; 11, outer shell; 12, cooling lubricating oil input pipe; 13, cooling lubricating oil output pipe; 14, output shaft; 15, support frame; 16, planetary gear; 17, ring gear; 18, input shaft; 19, sun gear; 110, fixed ring; 111, electric one-way valve; 112, closing cover; 113, electric exhaust valve; 114, sliding block; 115, first spring; 116, first elastic member; 117, insertion rod; 118, accommodating cavity; 119, second spring; 120, push plate; 121, electromagnet; 122, ferrous ball; 123, gas passage; 124, micro one-way valve; 125, storage groove; 126, sliding shaft; 127, magnetic guide; 128, permanent magnet; 129, third spring; 2, linkage mechanism; 21, sliding ring; 22, mounting seat; 23, first rotating shaft; 24, connecting force arm; 25, second rotating shaft; 26, fixed frame; 27, third rotating shaft; 28, pushing wheel; 3, positioning mechanism; 31, pushing ring; 32, guide column; 33, mounting ring; 34, second elastic member; 35, friction plate. DETAILED DESCRIPTION

[0019] ​​The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figure 1 and Figure 2 As shown, this embodiment discloses a dual-speed ratio planetary drive gearbox, including: a pressurizing mechanism 1 for adjusting the output speed of the gearbox; a linkage mechanism 2 for transmitting power and driving other structures to operate; and a positioning mechanism 3 for braking corresponding parts and assisting in speed adjustment. When existing planetary gearboxes need to adjust their speed, the equipment must be completely stopped before restarting.

[0021] In this invention, pneumatic pressure drives the movement of components, which, in conjunction with a magnetic coupler, ultimately locks the rotating structure. This allows the gearbox to directly switch speeds during high-speed operation, significantly improving work efficiency and reducing energy consumption. Figure 3 and Figure 7 As shown, the pressurizing mechanism 1 includes a sealing cover 112 and a miniature one-way valve 124. An input shaft 18 is fixedly inserted inside the sealing cover 112. When the input shaft 18 is driven by an external motor, it drives the sealing cover 112 to rotate synchronously, thereby continuously compressing and delivering air through internal components. A gas passage 123 is opened inside the sealing cover 112, and the miniature one-way valve 124 is fixedly inserted inside the gas passage 123. A storage groove 125 is opened inside the input shaft 18, and a sliding shaft 126 is movably inserted inside the storage groove 125. After the air is compressed, it opens the miniature one-way valve 124 under pressure and flows into the gas passage 123. Under the delivery of the gas passage 123, the air is sent to the storage groove 125 inside the input shaft 18. As the air inside the storage groove 125 continuously increases, the air pressure rises synchronously, thereby pushing the sliding shaft 126 to extend out of the input shaft 18. Figure 6As shown, a magnetic conductor 127 is fixedly sleeved on the outer wall of the sliding shaft 126, and an output shaft 14 is movably sleeved on the outer wall of the sliding shaft 126. A third spring 129 is fixedly installed on one side of the inner wall of the output shaft 14, and a permanent magnet 128 is fixedly installed on the inner surface of the output shaft 14. The input shaft 18 and the output shaft 14 are connected or disconnected through the sliding shaft 126, thereby controlling the speed of the gearbox. Since the front end of the sliding shaft 126 is inserted into the output shaft 14, when the sliding shaft 126 is pushed, it begins to advance in the output shaft 14, thereby compressing the third spring 129 and causing the magnetic conductor 127 and the permanent magnet 128 on the outer wall to misalign, breaking the magnetic coupling device formed by the two. This causes the output shaft 14 and the input shaft 18 to rotate asynchronously. Under the action of the internal gear set, the speed of the output shaft 14 is much smaller than the speed of the input shaft 18, thereby reducing the output speed of the planetary gearbox. Figure 4 As shown, an electric exhaust valve 113 is fixedly connected to the outer wall of the input shaft 18. If it is necessary to increase the output speed of the gearbox, the electric exhaust valve 113 is opened to discharge the compressed air inside the input shaft 18. The squeezed third spring 129 extends and pushes the sliding shaft 126 to reset. At this time, the magnetic conductor 127 and the permanent magnet 128 coincide. When the input shaft 18 rotates, it will drive the output shaft 14 to run synchronously under the action of the magnetic coupler. The external gear structure does not participate in the transmission process. The device can complete the speed switching without stopping during high-speed operation, which not only effectively improves the working efficiency of related equipment and avoids the delay caused by shutdown, but also prevents the energy loss caused by continuous shutdown and start-up, saving energy costs.

[0022] like Figure 8 and Figure 9 As shown, the positioning mechanism 3 includes a push ring 31 and a friction plate 35. A set of guide posts 32 are fixedly installed on one side of the outer wall of the push ring 31. The friction plate 35 is fixedly installed between the outer walls of the set of guide posts 32. When the friction plate 35 contacts the part, it can lock it. A mounting ring 33 is fixedly inserted inside the housing 11. A set of second elastic members 34 are fixedly installed between the mounting ring 33 and the outer wall of the push ring 31. The set of guide posts 32 are movably inserted inside the mounting ring 33 between the outer walls of the mounting ring 32. During the movement of the sliding shaft 126, the push ring 31 is driven to move by means of a transmission component. Then, the push ring 31 drives the set of guide posts 32 and the friction plate 35 to begin to approach the gear ring 17. Figure 3 It also presses a set of second elastic elements 34 to fix the position of the gear ring 17, so that the gear meshing with the inside of the gear ring 17 can rotate smoothly and reduce the output speed.

[0023] like Figure 3 and Figure 4As shown, a retaining ring 110 is fixedly inserted into the inner wall of the outer casing 11. An electric check valve 111 is fixedly connected to the input end of the retaining ring 110. The outer wall of the electric check valve 111 is fixedly inserted into the interior of the outer casing 11. Two sliders 114 are slidably embedded inside the retaining ring 110. Figure 5As shown, a first spring 115 is fixedly installed between the outer walls of the two sliders 114. A closing cover 112 is fixedly installed on the top of one of the two sliders 114. A first elastic element 116 is fixedly installed on the top of the inner wall of the other slider 114. A plug rod 117 is fixedly installed on the bottom of the first elastic element 116. A receiving cavity 118 is opened at the bottom of the inner wall of the fixing ring 110. Two second springs 119 and an electromagnet 121 are fixedly installed on the bottom of the inner wall of the receiving cavity 118. A push plate 120 is fixedly installed on the top of one of the two second springs 119, and an iron ball 122 is fixedly installed on the top of the other two second springs 119. When the user needs to reduce the output speed of the planetary gearbox, he first opens the electric one-way valve 111. To facilitate the entry of outside air into the fixed ring 110, the electromagnet 121 is then closed, causing the iron ball 122 to extend out from inside the fixed ring 110. Since the receiving cavity 118 is filled with liquid, the push plate 120 begins to descend. Because the input shaft 18 continuously drives the sealing cover 112 to rotate, the sealing cover 112 causes a connected slider 114 to slide inside the fixed ring 110. Under the pull of the first spring 115, the other slider moves synchronously. When the insertion rod 117 at the bottom of the other slider 114 reaches above the push plate 120, the compressed first elastic element 116 begins to extend, pushing the push plate 120 into the receiving cavity 118. At this time, the front slider 114 continues to move forward driven by the sealing cover 112, while the rear slider 114... With its position fixed, the internal space of the fixed ring 110 is divided into two parts, one large and one small, connected by a first spring 115. In the smaller space, as the volume increases, the air pressure rapidly decreases, allowing outside air to enter through the electric one-way valve 111 under pressure, maintaining pressure balance between the inside and outside of the corresponding space. In the larger space, the rear slider 114 is fixed while the front slider 114 continuously moves, causing the space to shrink and the internal air to be compressed, thus increasing the pressure. Under this pressure, air enters the gas channel 123 opened in the closed cover 112. When the front slider 114 reaches the iron ball 122, the bottom pushes the iron ball 122 down, compressing the second spring 119 and the bottom liquid. Due to the incompressibility of the liquid, the other side... The push plate 120 rises, pushing the insert rod 117 out of the receiving cavity 118. The corresponding slider 114, under the action of the stretched first spring 115, begins to move rapidly forward towards the front slider 114. After the top slider 114 of the iron ball 122 moves away, the push plate 120 descends again to reset under the action of the second spring 119. The rear slider 114 is driven to rotate and return to the push plate 120, where the insert rod 117 again fixes the slider 114, thus repeating the process of compressing and delivering air. This pushes the sliding shaft 126 forward, disconnecting the input shaft 18 from the output shaft 14, significantly reducing the gearbox output speed. To reconnect them, simply close the electric one-way valve 111 to prevent outside air from entering, and simultaneously activate the electromagnet 121.The iron ball 122 descends, and under the pressure of the liquid inside the receiving cavity 118, the pusher plate 120 on the other side rises. At this point, both are at the same height, ensuring the inner wall of the gear ring 17 is horizontal. The two sliders 114 then slide freely within the gear ring 17, without affecting the operation of other structures.

[0024] like Figure 3 As shown, a housing 11 is movably fitted between the outer walls of the output shaft 14 and the input shaft 18. The input end of the housing 11 is fixedly connected to a cooling and lubricating oil inlet pipe 12, and the output end of the housing 11 is fixedly connected to a cooling and lubricating oil outlet pipe 13. Three support frames 15 are fixedly mounted on the outer wall of the output shaft 14. Three planetary gears 16 are movably fitted on the outer walls of each of the three support frames 15. A gear ring 17 meshes between the outer walls of the three planetary gears 16. The outer wall of the gear ring 17 is movably inserted inside the housing 11. A sun gear 19 is fixedly fitted on the outer wall of the input shaft 18. The outer wall of the sun gear 19 meshes with the outer walls of the three planetary gears 16. At low speeds, when the input shaft 18 rotates, it drives the sun gear 19 to rotate. The sun gear 19 and... The external gear ring 17 cooperates with each other, causing the three internal planetary gears 16 to rotate in a circular motion. The three planetary gears 16 drive the internally inserted support frame 15 to move synchronously, causing the output shaft 14 to rotate at a low speed. When it is necessary to increase the speed of the output shaft 14, simply release the restriction on the gear ring 17, allowing the output shaft 14 to connect with the input shaft 18, thus ensuring that both operate at the same speed and switching the gearbox to high-speed mode. When the gearbox is working, the cooling lubricating oil inlet pipe 12 continuously delivers cooling lubricating oil to the inside of the housing 11, while the cooling lubricating oil outlet pipe 13 delivers the cooling lubricating oil after heat absorption. This not only improves the lubrication of the internal structure and prevents parts from jamming and causing damage to the device, but also effectively absorbs the heat generated during the operation of the gearbox, ensuring the stability of the structure.

[0025] like Figure 8As shown, the linkage mechanism 2 includes a slip ring 21, which is fixedly sleeved on the outer wall of the sliding shaft 126. Three mounting seats 22 are fixedly installed on the outer wall of the slip ring 21. A first rotating shaft 23 is fixedly inserted into the inner wall of each of the three mounting seats 22. A connecting arm 24 is movably sleeved on the outer wall of each of the three first rotating shafts 23. A second rotating shaft 25 and a third rotating shaft 27 are fixedly inserted into the interior of each of the three connecting arms 24. A fixing frame 26 is movably sleeved on the outer wall of each of the three second rotating shafts 25. The outer walls of the three fixing frames 26 are fixedly installed inside the outer casing 11. A push wheel 28 is movably sleeved on the outer wall of each of the three third rotating shafts 27. The gearbox needs to be moved from a high position... When switching from high speed to low speed, the sliding shaft 126 is pushed forward, disconnecting the output shaft 14 from the input shaft 18. At this time, the mounting base 22 and the first rotating shaft 23 located outside the sliding shaft 126 begin to move synchronously, causing the connecting arm 24 located outside the first rotating shaft 23 to rotate around the second rotating shaft 25 as the center, moving in the opposite direction to the top end. With the help of the internal third rotating shaft 27, the push wheel 28 is driven forward. The push wheel 28 squeezes the push ring 31, causing the friction plate 35 to contact the gear ring 17 and fix the gear ring 17. This device reduces the number of electrical parts required for gearbox mode switching by means of mechanical structure, greatly reducing costs and improving structural reliability.

[0026] The wiring diagrams of the electric check valve 111, electric exhaust valve 113, and electromagnet 121 in this invention are common knowledge in the field, and their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control method and wiring arrangement of the electric check valve 111, electric exhaust valve 113, and electromagnet 121 will not be explained in detail.

[0027] It should be noted that there is another technical solution to this problem, which is attached. Figure 10By precisely controlling the flow and on / off state of the hydraulic medium, the independent adjustment of the state of the two sets of internal braking elements is achieved, thereby completing the dynamic switching of the transmission ratio without interrupting power transmission. The complete operation process of this embodiment begins in the safety preparation state before the equipment starts. In the non-working state, there is no medium injected into the hydraulic medium injection ports of both low speed and high speed. Piston 1 and Piston 2 press the friction plate group under the action of the spring group, so that the input spline shaft is in a braking state. When the low speed hydraulic medium is injected into the port, Piston 1 moves upward against the spring force under the action of hydraulic thrust, releasing the first brake plate group, while the second brake plate group remains in a braking state, so that the first-stage gear ring is fixed and cannot rotate. At this time, the input spline shaft drives the first-stage sun gear. The power is transmitted to the first-stage planetary carrier after the speed ratio is changed by the first-stage planetary gear set, and then further changed by the second-stage sun gear and the second-stage planetary gear set before being output. At this time, the output torque is the product of the input torque and the speed ratio of the first and second stage planetary gears, and the output speed is the input speed. When the speed is divided by the two-stage speed ratio, the low-speed interface cuts off the medium when switching to the high-speed gear. Piston 1 moves down under the action of the spring to brake the first brake pad assembly. At the same time, the high-speed interface injects medium, and piston 2 moves up to release the second brake pad assembly. The input spline shaft directly drives the first-stage gear ring, so that the first-stage sun gear and the gear ring rotate synchronously. The planetary gear is integrated into a whole, and the power is directly transmitted to the second-stage sun gear. The output is only output after the speed ratio change of the second-stage planetary gear. The output torque is the product of the input torque and the second-stage speed ratio, and the output speed is the input speed divided by the second-stage speed ratio. When the two interfaces inject medium at the same time, both pistons move up to release the brake pad assembly. The first-stage sun gear, gear ring, and planetary carrier are in a free state and cannot transmit torque, thus achieving neutral. This embodiment realizes dynamic speed ratio switching under continuous operating conditions through a hydraulic shifting mechanism. The low-speed gear provides high torque when fully loaded, and the high-speed gear provides high speed when unloaded, which significantly improves working efficiency and reduces energy consumption. It is especially suitable for the power head drive field of engineering machinery such as rotary drilling rigs.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dual ratio transmission planetary drive gear box, characterised in that, Include: Pressurizing mechanism (1) for adjusting the output speed of the gearbox; Linkage mechanism (2) for transmitting power to drive other structures to operate; Positioning mechanism (3) for stopping corresponding parts and assisting device speed regulation; The pressurizing mechanism (1) includes a closed cover (112) and a micro one-way valve (124), the inside of the closed cover (112) is fixedly provided with an input shaft (18), the inside of the closed cover (112) is provided with a gas passage (123), the micro one-way valve (124) is fixedly provided in the inside of the gas passage (123), the inside of the input shaft (18) is provided with a storage groove (125), the inside of the storage groove (125) is movably provided with a sliding shaft (126), the outer wall of the sliding shaft (126) is fixedly provided with a magnet (127), the outer wall of the sliding shaft (126) is movably provided with an output shaft (14), the inner wall of the output shaft (14) is fixedly provided with a third spring (129), the inner wall of the output shaft (14) is fixedly provided with a permanent magnet (128), the input shaft (18) and the output shaft (14) are connected or disconnected through the sliding shaft (126), so as to control the rotating speed of the gearbox; The positioning mechanism (3) includes a push ring (31) and a friction plate (35), a group of guide columns (32) are fixedly installed on one side of the outer wall of the push ring (31), and the friction plate (35) is fixedly installed between the outer walls of the group of guide columns (32), when the friction plate (35) contacts with the parts, it can lock them.

2. A dual ratio planetary drive gear box as claimed in claim 1, wherein, The outer walls of the output shaft (14) and the input shaft (18) are movably provided with a shell (11), the input end of the shell (11) is fixedly communicated with a cooling lubricating oil input pipe (12), the output end of the shell (11) is fixedly communicated with a cooling lubricating oil output pipe (13), the outer wall of the output shaft (14) is fixedly provided with three support frames (15), the outer walls of the three support frames (15) are movably provided with three planetary gears (16), and the outer walls of the three planetary gears (16) are meshed with a gear ring (17).

3. The dual-speed ratio planetary drive gearbox according to claim 2, characterized in that, The outer wall of the gear ring (17) is movably provided in the inside of the shell (11), the outer wall of the sun gear (19) is fixedly provided with the input shaft (18), and the outer wall of the sun gear (19) is meshed with the outer walls of the three planetary gears (16).

4. A dual ratio planetary drive gear box as claimed in claim 2, wherein, The inner wall of the shell (11) is fixedly provided with a fixed ring (110), the input end of the fixed ring (110) is fixedly communicated with an electric one-way valve (111), the outer wall of the electric one-way valve (111) is fixedly provided in the inside of the shell (11), and the outer wall of the input shaft (18) is fixedly communicated with an electric exhaust valve (113).

5. A dual ratio planetary drive gear box as claimed in claim 4, wherein, The inner part of the fixed ring (110) is slidably embedded with two sliding blocks (114), the outer wall between the two sliding blocks (114) is fixedly installed with a first spring (115), the top of one of the two sliding blocks (114) is fixedly installed with a closing cover (112), the inner wall top of the other of the two sliding blocks (114) is fixedly installed with a first elastic member (116), and the bottom of the first elastic member (116) is fixedly installed with a plug rod (117).

6. A dual ratio planetary drive gear box as claimed in claim 4, wherein, The inner wall bottom of the fixed ring (110) is provided with an accommodating cavity (118), the inner wall bottom of the accommodating cavity (118) is fixedly installed with two second springs (119) and an electromagnet (121), the top of one of the two second springs (119) is fixedly installed with a push plate (120), and the top of the other of the two second springs (119) is fixedly installed with an iron clamping ball (122).

7. A dual ratio planetary drive gear box as claimed in claim 1, wherein, The linkage mechanism (2) comprises a sliding ring (21), the sliding ring (21) is fixedly sleeved on the outer wall of the sliding shaft (126), the outer wall of the sliding ring (21) is fixedly installed with three mounting seats (22), and the inner wall of each of the three mounting seats (22) is fixedly inserted with a first rotating shaft (23).

8. A dual ratio planetary drive gear box as claimed in claim 7, wherein, The outer wall of each of the three first rotating shafts (23) is movably sleeved with a connecting force arm (24), and the inner part of each of the three connecting force arms (24) is fixedly inserted with a second rotating shaft (25) and a third rotating shaft (27).

9. A dual ratio planetary drive gear box as claimed in claim 8, wherein, The outer wall of each of the three second rotating shafts (25) is movably sleeved with a fixing frame (26), the outer wall of each of the three fixing frames (26) is fixedly installed in the inner part of the shell (11), and the outer wall of each of the three third rotating shafts (27) is movably sleeved with a push wheel (28).

10. A dual ratio planetary drive gear box as claimed in claim 2, wherein, The inner part of the shell (11) is fixedly inserted with a mounting ring (33), a group of second elastic members (34) are fixedly installed between the outer wall of the push ring (31) and the inner part of the mounting ring (33), and the outer wall of a group of guide columns (32) is movably inserted in the inner part of the mounting ring (33).

Images