Planetary gear transmission device

Abstract

The invention belongs to the related technical field of transmission devices, and particularly discloses a planetary gear transmission device which comprises a base, a worm shaft, a planetary gear module and a transmission shaft, a motor is fixedly installed on the upper surface of one side of the base, and a shell is fixedly installed on the upper surface of the side, away from the motor, of the base. A fixing base is fixedly arranged at one end of the bottom of the inner side of the shell, the planetary gear module is installed at the rear end of the exterior of the transmission shaft in a penetrating mode, one end of the transmission shaft penetrates through the fixing base and the exterior of the shell, the worm shaft is rotationally arranged in the shell, and the end of the worm shaft is fixedly connected with an output shaft of the motor. According to the worm shaft lubricating device, through the positive displacement lubricating pump, the oil brushing mechanism capable of moving in a reciprocating mode and temperature sensing early warning, the worm shaft is automatically and evenly lubricated so as to restrain abrasion, and the service life of the worm shaft is greatly prolonged.

Description

Technical Field

[0001] This invention belongs to the technical field of transmission devices, and specifically discloses a planetary gear transmission device. Background Technology

[0002] Worm-planetary gear transmission is a composite transmission form that combines the structural features of worm transmission and planetary gear transmission, possessing the advantages of both while adapting to the transmission needs of specific scenarios. Structurally, it uses a worm as the central transmission component, replacing the sun gear in traditional planetary gear drives. Multiple planet gears are evenly distributed around the worm (symmetrically arranged along its circumference). These planet gears mesh simultaneously with the helical teeth of the worm and the outer internal gear ring. The planet gears are mounted on the planet carrier via bearings, forming a multi-tooth meshing system of "worm-planet gear-internal gear ring." This structure retains the advantages of worm drives—"large transmission ratio (single-stage transmission ratio can reach 10-60) and smooth operation"—while also utilizing the revolution and rotation of the planet gears to achieve power distribution. Power is input from the worm and distributed to each planet gear, then collected and output via the planet carrier or internal gear ring. Therefore, it can withstand larger loads like planetary gear drives. Based on these characteristics, worm-planetary gear transmissions are commonly used in scenarios that require both a large transmission ratio and a small installation space, as well as a certain load-bearing capacity, such as precision reducers, servo transmission systems, and rotary mechanisms in engineering machinery. The core of its structural design lies in balancing the meshing coordination between the worm and the planetary gears and optimizing lubrication efficiency to alleviate wear problems.

[0003] The following problems may occur during the operation of worm gear planetary gears: In worm gear drives, the tooth surfaces become irregularly shaped after wear, especially in severely worn areas such as the root of the worm's helical grooves and the tooth tip. Therefore, grease needs to be added. Manually applying grease and conducting regular inspections is not only labor-intensive, resource-intensive, and time-consuming, but also makes it difficult to guarantee the accuracy and comprehensiveness of the operation. When manually applying grease to worm gear drives, the worm is usually installed in a transmission housing that is not easily disassembled, making its lower side and some hidden meshing areas difficult to reach, resulting in these areas not receiving timely and effective lubrication. Furthermore, changes in grease temperature directly reflect the frictional conditions of worm gear and planetary gear transmissions. Under normal operating conditions, the grease temperature generally remains stable within the range of 50-65℃, indicating that the friction of the transmission is at a reasonable level and the operation is relatively smooth. However, when friction intensifies due to wear, poor lubrication, or other reasons, the grease temperature rises rapidly, easily exceeding 80℃. In existing technologies, grease temperature monitoring and grease injection are often independent, failing to establish an effective correlation mechanism. When the temperature monitoring system detects an abnormal temperature increase, indicating increased friction, it cannot promptly and automatically enhance lubrication by adjusting the grease injection amount and frequency to suppress the escalating wear.

[0004] Therefore, a planetary gear transmission device is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to solve the problems existing in the background art, and to propose a planetary gear transmission device, including a base, a worm shaft, a planetary gear module, and a transmission shaft. A motor is fixedly installed on the upper surface of one side of the base, and a housing is fixedly installed on the upper surface of the base away from the motor. A fixed seat is fixedly provided at one end of the bottom inner side of the housing. The planetary gear module is installed through the rear end of the transmission shaft, and one end of the transmission shaft passes through the fixed seat and the outside of the housing. The worm shaft is rotatably disposed inside the housing and its end is fixedly connected to the output shaft of the motor. A ring frame is fitted inside the housing and above the worm shaft. The upper end of the ring frame is connected to the inside of the housing by a fixed fastener. A C-shaped ring shell is fixedly installed on the outer surface of the ring frame. The C-shaped ring shell is fitted outside the worm shaft. A side shell is connected to the inside of the C-shaped ring shell. A sliding groove is formed on the upper surface of one side of the side shell. A rigid tube is connected inside the sliding groove through a set folding mechanism. An oil injection mechanism is provided at the upper end of the rigid tube. Fixed blocks are symmetrically installed on both sides of the lower outside of the rigid tube. An oil brushing mechanism is provided on the outside of each fixed block.

[0006] In the above technical solution, the folding mechanism further includes a hydraulic telescopic rod fixedly mounted inside one end of the side shell, and a locking block is fixedly connected to the telescopic end of the hydraulic telescopic rod. The locking block is fixedly fitted on the outside of the rigid tube, and the two sides of the locking block slide against the inner wall of the groove.

[0007] In the above technical solution, the oil injection mechanism further includes a positive displacement lubrication pump, a connector pipe is installed inside the upper part of the positive displacement lubrication pump, the positive displacement lubrication pump is fixedly installed on the upper surface of one side of the housing, a telescopic hose is installed inside the lower part of the positive displacement lubrication pump, the lower end of the telescopic hose is connected to a rigid pipe, and heat dissipation grids are installed on both sides of the outer side of the housing near the top.

[0008] In the above technical solution, the brushing mechanism further includes a clamping shell that is clamped on the outside of the fixing block. A frame is fixedly installed on the side of the clamping shell away from the fixing block. A first U-shaped frame is fixedly installed on the outside of one end of the frame. Nylon brushes are installed at equal intervals along the vertical direction on the outer surface of the first U-shaped frame.

[0009] In the above technical solution, a high-pressure air pump is further fixedly installed at the rear end of the frame, and a vertical pipe is fixedly installed at one end of the high-pressure air pump. The vertical pipe is vertically inserted into the first U-shaped frame, and a diversion mechanism is provided inside the vertical pipe.

[0010] In the above technical solution, the diversion mechanism further includes atomizing nozzles that are equidistantly connected and installed inside the vertical pipe along the vertical direction. Each atomizing nozzle is fixedly fitted with an electromagnetic induction heating device. The atomizing nozzles penetrate the outer side of the first U-shaped frame. The atomizing nozzles are correspondingly arranged between two sets of nylon brushes that are close to each other.

[0011] In the above technical solution, a second U-shaped frame arranged horizontally is further fixedly installed on the side of the frame away from the clamping shell. A probe is fixedly installed inside the second U-shaped frame. A temperature sensing buzzer is electrically connected to the rear end of the probe. The temperature sensing buzzer is fixedly installed on the outer wall of the second U-shaped frame.

[0012] In the above technical solution, the upper surface of the clamping shell is provided with two sets of symmetrical mounting holes, and each mounting hole is threaded with a mounting screw, the bottom end of which extends into the interior of the fixing block.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. By combining a positive displacement lubrication pump with a rigid tube that can move along the length of the worm shaft and an oil-brushing mechanism, automatic grease delivery and uniform coating of the worm surface can be achieved. The positive displacement lubrication pump can precisely control the output of grease, avoiding the problems of uneven application or omissions during traditional manual grease replenishment. At the same time, the retraction mechanism drives the rigid tube to move back and forth along the groove, allowing the oil-brushing mechanism to cover the root of the worm's helical groove, the tooth tip, and other easily worn areas that are difficult to reach manually. This effectively solves the problem of lubrication blind spots in irregular wear areas of the worm and reduces the risk of clearance expansion due to insufficient lubrication.

[0014] 2. By incorporating a synergistic structure of a nylon brush and an atomizing nozzle in the oiling mechanism, the lubrication effect and nozzle anti-clogging capability can be further improved. As the nylon brush moves with the rigid tube, it evenly applies grease to the worm gear surface, ensuring full coverage of the meshing surfaces. Simultaneously, the atomizing nozzle blows back the grease adhering to the outside of the nylon brush to the outer surface of the worm gear shaft, thus ensuring continuous coating effect. An electromagnetic induction heating device is installed outside the atomizing nozzle to heat the grease, reducing its viscosity and preventing nozzle clogging caused by high grease viscosity.

[0015] 3. By installing a temperature probe and a temperature-sensing buzzer next to the oiling mechanism, the temperature changes of the worm gear surface and the lubricating grease can be monitored in real time. When the temperature rises abnormally, it can be promptly determined that the worm gear friction has intensified. At this time, no manual intervention is required; the positive displacement lubrication pump can automatically adjust the lubricating grease output, which, together with the reciprocating brushing action of the oiling mechanism, can enhance lubrication and inhibit further friction. The temperature-sensing buzzer will sound an alarm when the temperature exceeds the limit, reminding the staff to check for wear or lubrication abnormalities, avoiding a vicious cycle caused by wear leading to an increase in the clearance between the worm gear shaft and the planetary gear module, resulting in more severe wear, and extending the service life of the worm gear and planetary gear module.

[0016] 4. By designing the oiling mechanism with a detachable clamp and fixing block connection structure, subsequent maintenance and component replacement are convenient. When the nylon brush shows wear or the atomizing nozzle needs cleaning, simply remove the mounting screws on the clamp to detach the oiling mechanism from the rigid tube, without disassembling the entire transmission device, significantly reducing maintenance difficulty and time. Simultaneously, the external heat dissipation grille helps reduce the internal operating temperature, minimizing the impact of high temperatures on the lubricant's performance, further ensuring the stability of the lubrication effect, and maintaining the accuracy and smoothness of the worm gear planetary gear transmission. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is another schematic diagram of the overall connection structure of the present invention; Figure 3 This is a schematic diagram of the connection of the inner part of the housing structure of the present invention; Figure 4 This is a schematic diagram of the connection structure between the C-shaped ring shell, the side shell, and the folding mechanism of the present invention; Figure 5 This is a schematic diagram of the partial structural connection between the rigid tube and the oiling mechanism of the present invention; Figure 6 This is a schematic diagram from another angle showing the partial structural connection between the rigid tube and the oiling mechanism of the present invention.

[0018] In the diagram: 1. Base; 2. Motor; 3. Housing; 4. Heat dissipation grille; 5. Positive displacement lubrication pump; 6. Connector pipe; 7. Worm shaft; 8. Planetary gear module; 9. Side shell; 10. Fixing component; 11. C-shaped ring shell; 12. Telescopic hose; 13. Rigid pipe; 14. Clamping block; 15. Hydraulic telescopic rod; 16. Slide groove; 17. Ring frame; 18. Nylon brush; 19. First U-shaped frame; 20. Second U-shaped frame; 21. Probe; 22. Vertical pipe; 23. Mounting screw; 24. Clamping shell; 25. Fixing block; 26. High-pressure air pump; 27. Temperature sensor buzzer; 28. Atomizing nozzle; 29. ​​Electromagnetic induction heating device; 30. Frame; 31. Drive shaft; 32. Fixing base. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0021] like Figures 1-6 The planetary gear transmission device shown includes a base 1, a worm shaft 7, a planetary gear module 8, and a transmission shaft 31. A motor 2 is fixedly mounted on the upper surface of one side of the base 1, and a housing 3 is fixedly mounted on the upper surface of the base 1 away from the motor 2. A fixing seat 32 is fixedly provided at one end of the bottom inner side of the housing 3. The planetary gear module 8 is installed through the rear end of the transmission shaft 31, and one end of the transmission shaft 31 passes through the fixing seat 32 and the outside of the housing 3. The worm shaft 7 is rotatably disposed inside the housing 3 and its end is fixedly connected to the output shaft of the motor 2. The worm shaft 7 is located inside the housing 3 and is located within the housing 3. A ring frame 17 is fitted on the top of the worm shaft 7. The upper end of the ring frame 17 is connected to the inside of the housing 3 by a fixed fastener 10. A C-shaped ring shell 11 is fixedly installed on the outer surface of the ring frame 17. The C-shaped ring shell 11 is fitted on the outside of the worm shaft 7. A side shell 9 is installed inside the C-shaped ring shell 11. A groove 16 is opened on the upper surface of one side of the side shell 9. A rigid tube 13 is connected inside the groove 16 by a set folding mechanism. An oil injection mechanism is set at the upper end of the rigid tube 13. Fixing blocks 25 are symmetrically installed on both sides of the lower part of the rigid tube 13. An oil brushing mechanism is set on the outside of each fixing block 25. The output shaft of motor 2 is directly fixedly connected to the end of worm shaft 7, and after starting, it can drive worm shaft 7 to rotate stably inside housing 3; The planetary gear module 8 is composed of planetary gears, planetary carriers, internal gear rings, etc. With the connection of the fixed seat 32, the drive shaft 31 can be positioned to prevent the drive shaft 31 from shifting during operation. The ring frame 17 installs the C-shaped ring shell 11 on the outside of the worm shaft 7 through the fastener 10. The fastener 10 consists of a fixing screw and a fixing plate. The fixing plate is connected to the C-shaped ring shell 11. The fixing plate can be stably installed on the inner wall of the housing 3 through the fixing screw. The groove 16 on the upper surface of one side of the side shell 9 provides guidance for the movement of the rigid tube 13, ensuring that the rigid tube 13 drives the oil brushing mechanism to move smoothly along the length of the worm shaft 7, covering the entire area of ​​the worm shaft 7.

[0022] The retraction mechanism includes a hydraulic telescopic rod 15 fixedly mounted inside one end of the side shell 9. The telescopic end of the hydraulic telescopic rod 15 is fixedly connected to a locking block 14. The locking block 14 is fixedly fitted on the outside of the rigid tube 13, and the two sides of the locking block 14 slide against the inner wall of the slide groove 16. When the hydraulic telescopic rod 15 extends or retracts, it will drive the locking block 14 to slide back and forth along the slide groove 16, which in turn will drive the rigid pipe 13 and the oiling mechanism below the rigid pipe 13 to move simultaneously, so that the oiling mechanism can cover the root of the spiral groove and the tooth tip of the worm shaft 7, which are easily worn areas, and solve the problem of blind spots that are difficult to reach by manual lubrication.

[0023] The oil injection mechanism includes a volumetric lubrication pump 5, a connector pipe 6 is installed inside the upper part of the volumetric lubrication pump 5, the volumetric lubrication pump 5 is fixedly installed on the upper surface of one side of the housing 3, a telescopic hose 12 is installed inside the lower part of the volumetric lubrication pump 5, the lower end of the telescopic hose 12 is connected to the rigid pipe 13, and heat dissipation grilles 4 are installed on both sides of the outer side of the housing 3 near the top. The positive displacement lubrication pump 5 is fixedly installed on the upper surface of one side of the housing 3. The connector pipe 6 connected to the upper part of its interior is used to connect to an external grease supply source, which can precisely control the amount of grease output. The telescopic hose 12 of the volumetric lubrication pump 5 is connected to the rigid pipe 13. It can move and extend flexibly with the rigid pipe 13 to prevent the pipeline from being pulled and damaged. The lubricating grease is delivered to the rigid pipe 13 through the telescopic hose 12 and then distributed to the oil brushing mechanism. The heat dissipation grille 4 can help dissipate heat from inside the housing 3, preventing abnormal changes in the lubricating grease caused by high temperature. The heat dissipation grille 4 extends to the lower part of the housing 3, where a precision filter screen can be added to prevent impurities from entering.

[0024] The brushing mechanism includes a clamping shell 24 that is clamped on the outside of the fixing block 25. A frame 30 is fixedly installed on the side of the clamping shell 24 away from the fixing block 25. A vertically arranged first U-shaped frame 19 is fixedly installed on the outside of one end of the frame 30. Nylon brushes 18 are installed at equal intervals along the vertical direction on the outer surface of the first U-shaped frame 19. Two sets of symmetrical mounting holes are opened on the upper surface of the clamping shell 24. The mounting holes are threaded with mounting screws 23. The bottom ends of the mounting screws 23 extend into the interior of the fixing block 25. The clamp 24 can be connected to the fixing block 25 by the mounting screw 23, which can be easily disassembled later. The inner surface of the mounting hole is a threaded surface. Under the extension and retraction drive of the hydraulic telescopic rod 15, the rigid tube 13, nylon brush 18, first U-shaped frame 19, clamp 24, frame 30 and other structures move laterally in sync. The nylon brush 18 can evenly apply the lubricating grease sprayed from the rigid tube 13 to the outer surface of the worm shaft 7 as the rigid tube 13 moves. It should be emphasized that the nylon brush 18 is made of medium to low hardness nylon filament, which is much harder than the material of the worm shaft 7. At the same time, the nylon filament has a certain degree of elastic deformation capability. When the worm shaft 7 rotates, the friction generated when the nylon brush 18 contacts the surface of the worm shaft 7 is minimal. Moreover, the spiral grooves at both ends of the worm shaft 7 are located in the middle. Therefore, during coating, space can be reserved at both ends for the nylon brush 18 to stop. In addition, the nylon brush 18 is coated with grease during the coating process, so the friction does not affect the transmission of the worm shaft 7.

[0025] A high-pressure air pump 26 is fixedly installed at the rear end of the frame 30. A vertical pipe 22 is fixedly installed at one end of the high-pressure air pump 26. The vertical pipe 22 is vertically inserted into the first U-shaped frame 19. A diversion mechanism is provided inside the vertical pipe 22. The diversion mechanism includes atomizing nozzles 28 that are equidistantly connected and installed inside the vertical pipe 22 along the vertical direction. An electromagnetic induction heating device 29 is fixedly sleeved on the outside of each atomizing nozzle 28. The atomizing nozzles 28 penetrate the outside of the first U-shaped frame 19. The atomizing nozzles 28 are correspondingly arranged between two sets of nylon brushes 18 that are close to each other. The high-pressure air pump 26 at the rear end of the frame 30 provides high-pressure airflow, which is delivered to the diversion mechanism via the vertical pipe 22. The atomizing nozzle 28 in the diversion mechanism can spray the high-pressure airflow and shuttle between two sets of nylon brushes 18 that are close to each other to treat the lubricating grease adhering to the outer surface of the nylon brushes 18. The electromagnetic induction heating device 29 fixedly sleeved on the outside of the atomizing nozzle 28 can heat the lubricating grease to reduce its viscosity and prevent the nozzle from clogging. The electromagnetic induction heating device 29 consists of an induction coil, an electromagnetic core, and other structures, which are common existing technologies and will not be described in detail here.

[0026] A second U-shaped frame 20 arranged horizontally is fixedly installed on the side of the frame 30 away from the clamp 24. A probe 21 is fixedly installed inside the second U-shaped frame 20. A temperature sensing buzzer 27 is electrically connected to the rear end of the probe 21. The temperature sensing buzzer 27 is fixedly installed on the outer wall of the second U-shaped frame 20. During the movement, the probe 21 can continuously detect the surface temperature of the worm shaft 7 and the temperature of the grease, and then transmit the temperature to the temperature sensor buzzer 27. The temperature sensor buzzer 27 stays on standby at the preset normal operating temperature of 50-65℃. When the temperature rises abnormally, it will immediately issue an alarm to remind you to check for friction or lubrication problems.

[0027] Working principle: When the motor 2 on one side of the base 1 is powered on, its output shaft directly drives the worm shaft 7 inside the housing 3 to rotate. The worm shaft 7 meshes with the planetary gears in the planetary gear module 8 through the helical tooth surface, distributing the power to multiple planetary gears. Driven by the worm shaft 7, the planetary gears simultaneously rotate around their own axis and revolve around the axis of the worm shaft 7. Through the meshing constraint with the internal gear ring, the distributed power is collected to the transmission shaft 31. Finally, the power is output to the outside through the transmission shaft 31 that passes through the fixed seat 32 and the housing 3, meeting the transmission requirements of large transmission ratio and high load. During this process, the heat dissipation grilles 4 on both sides of the outside of the housing 3 synchronously dissipate the heat generated by the internal operation, maintaining a stable transmission environment temperature. While transmitting power, the automatic lubrication system also achieves precise lubrication of the worm shaft 7 surface according to its usage. A volumetric lubrication pump 5 on one side of the housing 3 is connected to an external grease supply source via a connector pipe 6. After pressurizing the grease, it is delivered to the rigid pipe 13 via a telescopic hose 12, and then sprayed onto the outer surface of the worm shaft 7. At this time, the retraction mechanism inside the side housing 9 begins to operate. The telescopic end of the hydraulic telescopic rod 15 drives the locking block 14, which is fixedly mounted on the outside of the rigid pipe 13, to slide along the slide groove 16. This causes the rigid pipe 13 and the oil brushing mechanisms on both sides to reciprocate synchronously with the locking block 14, covering the entire length of the worm shaft 7 and avoiding lubrication blind spots. The nylon brush 18 on the outer surface of the frame 19 moves with the rigid tube 13 to further apply the grease to the root of the spiral groove and the tooth tip of the worm shaft 7, which are prone to wear. This ensures that the grease fully penetrates into the meshing gap between the worm shaft 7 and the planetary gear module 8, reducing sliding friction. After lubrication, the high-pressure air pump 26 inside the frame 30 delivers high-pressure airflow to the vertical tube 22. The vertical tube 22 uses a diversion mechanism to spray the airflow out through the atomizing nozzles 28 that are evenly distributed in the vertical direction. This backflushs the excess grease attached to the outer surface of the nylon brush 18. The electromagnetic induction heating device 29 outside the atomizing nozzle 28 heats the grease simultaneously to reduce its viscosity and prevent the nozzle from clogging. During device operation, the temperature monitoring and early warning mechanism monitors the operating conditions in real time to avoid abnormal risks. The probe 21 inside the second U-shaped frame 20 continuously detects the temperature of the worm shaft 7 surface and the grease, and transmits the temperature signal to the temperature sensor buzzer 27. When the temperature is in the normal range of 50-65℃, the volumetric lubrication pump 5 maintains the normal output, and the brushing mechanism moves back and forth at a preset frequency. If the temperature rises abnormally, such as exceeding 80℃, it indicates increased friction. The temperature sensor buzzer 27 immediately sounds an alarm, and at the same time, the volumetric lubrication pump 5 automatically increases the output of grease, which, together with the action of the brushing mechanism, strengthens lubrication and inhibits further friction. When maintenance is required in the future, only the mounting screws 23 on the clamp 24 need to be removed to remove the brushing mechanism from the fixing block 25 and replace the nylon brush 18 or clean the atomizing nozzle 28. There is no need to disassemble the entire device, ensuring convenient maintenance.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A planetary gear transmission device, comprising a base (1), a worm shaft (7), a planetary gear module (8), and a transmission shaft (31), characterized in that: A motor (2) is fixedly mounted on one side of the upper surface of the base (1). A housing (3) is fixedly mounted on the upper surface of the base (1) away from the motor (2). A fixed seat (32) is fixedly provided at one end of the bottom of the inner side of the housing (3). The planetary gear module (8) is installed through the rear end of the transmission shaft (31), and one end of the transmission shaft (31) passes through the fixed seat (32) and the outside of the housing (3). The worm shaft (7) is rotatably disposed inside the housing (3) and its end is fixedly connected to the output shaft of the motor (2). A ring frame (17) is fitted inside the housing (3) and above the worm shaft (7). The end is connected to the inside of the housing (3) by a fixed fastener (10). A C-shaped ring shell (11) is fixedly installed on the outer surface of the ring frame (17). The C-shaped ring shell (11) is fitted on the outside of the worm shaft (7). A side shell (9) is installed inside the C-shaped ring shell (11). A sliding groove (16) is opened on the upper surface of one side of the side shell (9). A rigid tube (13) is connected inside the sliding groove (16) by a set folding mechanism. An oil injection mechanism is set at the upper end of the rigid tube (13). Fixing blocks (25) are symmetrically installed on both sides of the lower part of the rigid tube (13). An oil brushing mechanism is set on the outside of each fixing block (25).

2. The planetary gear transmission device according to claim 1, characterized in that: The retraction mechanism includes a hydraulic telescopic rod (15) fixedly mounted inside one end of the side shell (9). The telescopic end of the hydraulic telescopic rod (15) is fixedly connected to a locking block (14). The locking block (14) is fixedly fitted on the outside of the rigid tube (13), and the two sides of the locking block (14) slide against the inner wall of the groove (16).

3. The planetary gear transmission device according to claim 1, characterized in that: The oil injection mechanism includes a volumetric lubrication pump (5), a connector pipe (6) is installed inside the upper part of the volumetric lubrication pump (5), the volumetric lubrication pump (5) is fixedly installed on the upper surface of one side of the housing (3), a telescopic hose (12) is installed inside the lower part of the volumetric lubrication pump (5), the lower end of the telescopic hose (12) is connected to the rigid pipe (13), and heat dissipation grids (4) are installed on both sides of the outer side of the housing (3) near the top.

4. A planetary gear transmission device according to claim 1, characterized in that: The brushing mechanism includes a clamp (24) that is clamped on the outside of the fixed block (25). A frame (30) is fixedly installed on the side of the clamp (24) away from the fixed block (25). A first U-shaped frame (19) is fixedly installed on the outside of one end of the frame (30). Nylon brushes (18) are installed at equal intervals along the vertical direction on the outer surface of the first U-shaped frame (19).

5. A planetary gear transmission device according to claim 4, characterized in that: A high-pressure air pump (26) is fixedly installed at the rear end of the frame (30). A vertical pipe (22) is fixedly installed at one end of the high-pressure air pump (26). The vertical pipe (22) is vertically inserted into the first U-shaped frame (19). A diversion mechanism is provided inside the vertical pipe (22).

6. A planetary gear transmission device according to claim 5, characterized in that: The diversion mechanism includes atomizing nozzles (28) that are equidistantly connected and installed inside the vertical pipe (22) along the vertical direction. Each atomizing nozzle (28) is fixedly fitted with an electromagnetic induction heating device (29). The atomizing nozzle (28) passes through the outside of the first U-shaped frame (19). The atomizing nozzle (28) is correspondingly arranged between two sets of nylon brushes (18) that are close to each other.

7. A planetary gear transmission device according to claim 6, characterized in that: A second U-shaped frame (20) arranged horizontally is fixedly installed on the side of the frame (30) away from the clamp (24). A probe (21) is fixedly installed inside the second U-shaped frame (20). A temperature sensing buzzer (27) is electrically connected to the rear end of the probe (21). The temperature sensing buzzer (27) is fixedly installed on the outer wall of the second U-shaped frame (20).

8. A planetary gear transmission device according to claim 4, characterized in that: The upper surface of the clamp (24) is provided with two sets of symmetrical mounting holes, and each mounting hole is threaded with a mounting screw (23), the bottom end of which extends into the fixing block (25).

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