High-efficiency-level two-stage planet carrier structure

Abstract

The invention discloses a high-efficiency-level two-stage planet carrier structure, and relates to the technical field of planet carriers. A mounting hole is formed in the planet carrier body, and a plurality of sets of tooth grooves are formed in the mounting hole. The planet wheel shafts are inserted into the sliding grooves, the T-shaped grooves are matched with the sliding blocks of the sliding rods, axial sliding guiding is achieved, the positioning accuracy and flexibility are improved, circumferential positioning is achieved, relative sliding is avoided, efficient torque transmission is ensured, limiting teeth of the inserting connection rings are meshed with tooth grooves of the mounting holes, and axial and circumferential double locking is formed; the transmission efficiency is improved through the tooth groove meshing structure, displacement or vibration of the planet wheel assembly during high-speed operation is prevented, upper loads are evenly transmitted to the planet carrier body through the connecting frame and the top plate, local stress concentration is reduced, the service life of parts is prolonged, and the service life of the parts is prolonged. Through accurate positioning and efficient torque transmission, the performance of the whole planetary gear transmission system is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of planetary carriers, and in particular to a high-efficiency, energy-grade, two-stage planetary carrier structure. Background Art

[0002] The secondary planetary carrier supports and secures the planetary gears in a planetary reducer. The planetary gears are key components of a planetary reducer. They rotate within the carrier, meshing with the sun gear and internal gear ring to transmit power. As one of the reducer's primary structural components, the carrier is responsible for transferring torque from the input shaft to the output shaft. It bears the load transmitted by the gears and transmits all power to the output shaft. A well-designed carrier structure helps optimize load distribution between the planetary gears, reducing the load on individual planetary gears and improving the load-bearing capacity and lifespan of the entire transmission system. In a traditional single-layer planetary carrier, when the input shaft (sun gear) rotates, it transmits power through the planetary gears. While the planetary gears rotate, they also revolve around the sun gear with the planetary carrier. The planetary gears mesh with the internal teeth of the ring gear. The revolution of the planetary gears causes the ring gear to rotate accordingly. The rotation of the ring gear is transmitted through the output shaft (usually fixed to the ring gear) to achieve power output. The speed ratio is changed by changing the relative positions of the planetary gears, sun gear, and ring gear. The shortcomings of the above solution are: it is easy to deform when subjected to large torque, resulting in uneven load on the planetary gear, affecting the transmission accuracy and life. Improving the load-bearing capacity usually requires increasing the amount of material, but this will reduce the power density. The existing structure is difficult to meet the requirements of high stiffness and good vibration damping performance at the same time. Planetary gear replacement and lubrication maintenance require disassembly of the entire planetary carrier. Summary of the Invention

[0003] The purpose of the present invention is to provide a high-efficiency, energy-grade, two-stage planetary carrier structure to solve the technical problems in the prior art that deformation easily occurs when subjected to large torque, resulting in uneven load on the planetary gears, affecting transmission accuracy and life. Improving the load-bearing capacity usually requires increasing the amount of material, but this will reduce the power density. The existing structure is difficult to simultaneously meet the requirements of high stiffness and good vibration damping performance, and the replacement and lubrication maintenance of the planetary gears require disassembly of the entire planetary carrier.

[0004] The technical problem to be solved by the present invention can be achieved through the following technical solutions: A high-efficiency, secondary planet carrier structure, including a planet carrier body; The planet carrier body is provided with a mounting hole, and a plurality of tooth grooves are provided in the mounting hole. A plug ring is provided above the planet carrier body, and a connecting frame is provided above the plug ring. An end of the connecting frame away from the plug ring is connected to a top plate, a through hole is provided on the top plate, a fixing rod is fixedly connected to the top plate, and an end of the fixing rod away from the top plate is connected to the connecting ring; the planet carrier body is connected to a plurality of fixing mechanisms; The cam is provided with a plurality of mounting mechanisms on the planetary frame body, and the mounting mechanism includes a fixing plate, and two side plates are fixedly connected to the fixing plate on both sides of the fixing plate, and a slide groove is provided on each of the two side plates, and a slide rod is slidably connected in the slide groove, and a flip plate is provided between the slide rods, and a fixing block is provided on the fixing plate, and a screw hole is provided in the fixing block, and a screw second is rotatably connected in the fixing block, and the two ends of the screw are connected to a handle second, and the end of the screw second away from the fixing block is connected to a push plate, and a bearing is connected between the push plate and the screw second, and the end of the push plate away from the screw second is connected to the sliding plate.

[0005] As a further solution of the present invention: the multiple groups of tooth grooves in the mounting hole are distributed in a ring array, and the cross-section of the tooth groove is trapezoidal or involute-shaped.

[0006] As a further solution of the present invention: a plurality of limiting teeth are provided on the plug-in ring, the limiting teeth of the plug-in ring are engaged with the tooth grooves of the mounting hole, and the tooth profile angle of the limiting teeth is an acute angle.

[0007] As a further solution of the present invention: a thread is provided on the fixing rod, and the thread of the fixing rod is a fine thread.

[0008] As a further solution of the present invention: the fixing mechanism includes a locking frame, a support frame 1 is fixedly connected to the planetary frame body, the end of the support frame 1 away from the planetary frame body is connected to a support plate, a socket is provided on the support plate, a screw 1 is connected between the locking frame and the support plate, and a handle 1 is fixedly connected to the end of the screw 1.

[0009] As a further solution of the present invention: the locking frame is a U-shaped structure, with anti-slip grooves on its inner side, the screw rod 1 and the socket of the support plate are threadedly matched, the support frame 1 and the planetary frame body are welded or integrally formed, and the support plate is provided with reinforcing ribs.

[0010] As a further solution of the present invention: the sliding groove is a T-shaped groove, and the end of the sliding rod is provided with a sliding block matching the T-shaped groove.

[0011] As a further solution of the present invention: the flip plate is hinged to the slide rod, and a damping bearing is provided at the hinge.

[0012] As a further solution of the present invention: the push plate and the sliding plate are connected by a spring, the sliding plate is provided with an arc-shaped guide groove that cooperates with the rotating rod, the sliding plate is connected with the rotating rod, the side plate is provided with an installation groove, the installation grooves are connected with a support frame 2, and the support frame 2 is connected with a clamping rod and two clamping blocks.

[0013] As a further solution of the present invention: the contact surface of the clamping block is made of rubber, and the end of the clamping rod is provided with a conical guide head; the planetary carrier body, the plug-in ring and the connecting frame are made of alloy steel, and the surface is carburized and quenched.

[0014] Beneficial effects of the present invention: 1. The planetary gear shaft of the present invention is inserted into the slide groove, and the T-shaped groove cooperates with the slider of the slide rod to realize axial sliding guidance, thereby improving the accuracy and flexibility of positioning, realizing circumferential positioning, avoiding relative sliding, and ensuring efficient torque transmission. The limiting teeth of the plug-in ring engage with the tooth grooves of the mounting hole to form axial and circumferential double locking. The tooth groove engagement structure improves the transmission efficiency and prevents the planetary gear assembly from displacement or vibration during high-speed operation. The upper load is evenly transmitted to the planetary carrier body through the connecting frame and the top plate, reducing local stress concentration, extending the service life of the components, and improving the performance of the entire planetary gear transmission system through precise positioning and efficient torque transmission.

[0015] 2. The present invention achieves axial pre-tightening of the planetary carrier through fine adjustment of the thread, eliminates assembly clearance, and improves the tightness and reliability of the connection. Rotating handle 1 drives screw 1 to advance and retreat in the threaded socket of the support plate. The design of rotating handle 1 and rotating handle 2 makes the fixing and removal of the external drive shaft or coupling quick and convenient, pushing the U-shaped locking frame inward to retract. The anti-slip grooves on the inner side of the locking frame increase friction, clamping the external drive shaft or coupling, and achieving rapid fixing. The rapid fixing and removal function makes maintenance and component replacement faster and reduces downtime.

[0016] 3. The planetary gear shaft is inserted into the slide groove and cooperates with the slider of the slide rod through the T-slot to realize axial sliding guidance. The second rotating handle drives the second screw to push the push plate. After being buffered by the spring, the sliding plate is driven to move along the arc guide groove, causing the rotating rod to deflect. The meshing position of the planetary gear can be accurately adjusted by fine-tuning the sliding plate and the rotating rod. At the same time, the rubber clamping block absorbs vibration and compensates for assembly errors, driving the planetary gear to fine-tune the meshing position. Through the fine-tuning mechanism, the meshing position of the planetary gear can be accurately adjusted, the transmission efficiency is optimized, and the stability and reliability of the system are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the separation structure of the present invention; Figure 2 It is a schematic diagram of the installation structure of the present invention; Figure 3 It is a schematic diagram of the installation mechanism structure of the present invention.

[0019] In the figure: 1. Planetary carrier body; 2. Mounting hole; 3. Plug-in ring; 4. Limiting tooth; 5. Connecting frame; 6. Top plate; 7. Through hole; 8. Fixing rod; 9. Thread; 10. Connecting ring; 11. Locking frame; 12. Support frame 1; 13. Screw 1; 14. Handle 1; 15. Support plate; 16. Fixing plate; 17. Side plate; 18. Screw 2; 19. Handle 2; 20. Fixing block; 21. Slide groove; 22. Slide rod; 24. Flip plate; 25. Sliding plate; 26. Rotating rod; 27. Support frame 2; 28. Push plate; 29. ​​Mounting groove; 30. Connecting block; 31. Connecting rod. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] like Figure 1-Figure 3 As shown, a high-efficiency secondary planetary carrier structure includes a planetary carrier body 1, a mounting hole 2 is provided on the planetary carrier body 1, a plurality of groups of tooth grooves are provided in the mounting hole 2, the plurality of groups of tooth grooves in the mounting hole 2 are distributed in an annular array, and the cross-section of the tooth groove is trapezoidal or involute-shaped, a plug-in ring 3 is provided above the planetary carrier body 1, a plurality of limiting teeth 4 are provided on the plug-in ring 3, the limiting teeth 4 of the plug-in ring 3 are engaged with the tooth grooves of the mounting hole 2, and the tooth profile angle of the limiting teeth 4 is an acute angle, a connecting frame 5 is provided above the plug-in ring 3, and the end of the connecting frame 5 away from the plug-in ring 3 is connected to a top plate 6, a through hole 7 is opened on the top plate 6, a fixing rod 8 is fixedly connected to the top plate 6, a thread 9 is provided on the fixing rod 8, and the thread 9 of the fixing rod 8 is a fine thread, and the end of the fixing rod 8 away from the top plate 6 is connected to a connecting ring 10; The planetary frame body 1 is connected to multiple sets of fixing mechanisms, and the fixing mechanisms include a locking frame 11, a support frame 12 is fixedly connected to the planetary frame body 1, and a support plate 15 is connected to the end of the support frame 12 away from the planetary frame body 1. The locking frame 11 is a U-shaped structure, and an anti-slip pattern is provided on its inner side. The screw 13 and the socket of the support plate 15 are threadedly matched. The support frame 12 and the planetary frame body 1 are welded or integrally formed. The support plate 15 is provided with a reinforcing rib, and a socket is opened on the support plate 15. A screw 13 is connected between the locking frame 11 and the support plate 15, and a handle 14 is fixedly connected to the end of the screw 13; The planetary frame body 1 is connected to a plurality of mounting mechanisms, and the mounting mechanism includes a fixed plate 16, two side plates 17 are fixedly connected on both sides of the fixed plate 16, and a slide groove 21 is provided on each of the two side plates 17, and a slide rod 22 is slidably connected in the slide groove 21, and the slide groove 21 is a T-shaped groove, and a slider matching the T-shaped groove is provided at the end of the slide rod 22, and a flip plate 24 is provided between the slide rods 22, and the flip plate 24 is hinged to the slide rod 22, and a damping bearing is provided at the hinge. A fixed block 20 is provided on the fixed plate 16, and a screw hole is provided in the fixed block 20, and a screw rod 2 18 is rotatably connected in the fixed block 20, and a handle 2 19 is connected to the end of the screw rod 2 18, and the screw rod 2 18 is away from the fixed block 20. The end is connected to a push plate 28, and a bearing is connected between the push plate 28 and the screw rod 2 18. The end of the push plate 28 away from the screw rod 2 18 is connected to a sliding plate 25, and the push plate 28 and the sliding plate 25 are connected by a spring. The sliding plate 25 is provided with an arc guide groove that cooperates with the rotating rod 26, and the sliding plate 25 is connected to the rotating rod 26. The side plate 17 is provided with a mounting groove 29, and a support frame 27 is connected between the mounting grooves 29. The support frame 27 is connected to a clamping rod 31 and two clamping blocks 30. The contact surface of the clamping block 30 is made of rubber, and the end of the clamping rod 31 is provided with a conical guide head; the planetary carrier body 1, the plug ring 3 and the connecting frame 5 are made of alloy steel, and the surface is carburized and quenched.

[0022] The working principle of the present invention is as follows: the planetary gear (not shown) is installed in the mounting hole 2 through a bearing, and its gear teeth are meshed with the sun gear and the ring gear. The tooth groove of the mounting hole 2 cooperates with the tooth shape of the planetary gear shaft end, and the tooth groove of the mounting hole 2 cooperates with the tooth shape of the planetary gear shaft end to achieve circumferential positioning, avoid relative sliding, and ensure efficient torque transmission. The planetary gear shaft is inserted into the slide groove 21 and cooperates with the slider of the slide rod 22 through the T-slot to achieve axial sliding guidance, thereby improving the accuracy and flexibility of positioning, achieving circumferential positioning, avoiding relative sliding, and ensuring efficient torque transmission. The limiting teeth 4 of the plug-in ring 3 are meshed with the tooth groove of the mounting hole 2 to form axial and circumferential double locking. The tooth groove meshing structure improves the transmission efficiency and prevents the planetary gear assembly from displacement or vibration during high-speed operation. The upper load is evenly transmitted to the planetary carrier body 1 through the connecting frame 5 and the top plate 6. The upper load is evenly transmitted to the planetary carrier body 1 through the connecting frame 5 and the top plate 6, which reduces local stress concentration and prolongs the service life of the components. The whole is made of carburized and quenched alloy steel to improve the bending and torsional rigidity. The fine thread 9 of the fixing rod 8 is connected to the external component (such as the reduction gearbox housing). The fine thread 9 of the fixing rod 8 is connected to the external component. The axial pre-tightening of the planetary carrier is achieved by fine adjustment of the thread, eliminating the assembly gap, and improving the tightness and reliability of the connection. The rotating handle 14 drives the screw 13 to move forward and backward in the threaded socket of the support plate 15. The design of the rotating handle 14 and the rotating handle 2 19 makes the fixing and disassembly of the external transmission shaft or coupling fast and convenient, pushing the U-shaped locking frame 11 to retract inward. The anti-slip grooves on the inner side of the locking frame 11 increase friction, clamping the external transmission shaft or coupling, and achieving rapid fixation; The planetary gear shaft is inserted into the slide groove 21, and the slider of the slide rod 22 is matched through the T-shaped groove to realize axial sliding guidance. The rotating handle 21 drives the screw 21 to push the push plate 28, and after the spring buffer, the sliding plate 25 is driven to move along the arc guide groove, so that the rotating rod 26 is deflected. The meshing position of the planetary gear can be accurately adjusted by fine-tuning the sliding plate 25 and the rotating rod 26. At the same time, the rubber clamping block 30 absorbs vibration and compensates for assembly errors, driving the planetary gear to fine-tune the meshing position. The tapered guide head of the clamping rod 31 guides the movement of the planetary gear. The planetary wheel shaft enters the installation groove 29 and is clamped by the rubber clamping block 30 to absorb vibration and compensate for assembly errors. The damping bearing hinge of the flip plate 24 allows the planetary wheel to swing slightly, evenly load and disperse the meshing impact. Through mechanical interlocking, elastic adjustment and modular structure, a balance between high load-bearing, low vibration and easy maintenance is achieved. The damping bearing hinge of the flip plate 24 allows the planetary wheel to swing slightly, evenly load and disperse the meshing impact. Through mechanical interlocking, elastic adjustment and modular structure, a balance between high load-bearing, low vibration and easy maintenance is achieved.

[0023] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A high-efficiency, two-stage planetary carrier structure, comprising a planetary carrier body (1); characterized in that: The planetary frame body (1) is provided with a mounting hole (2), and a plurality of tooth grooves are provided in the mounting hole (2); a plug-in ring (3) is provided above the planetary frame body (1), and a connecting frame (5) is provided above the plug-in ring (3); an end of the connecting frame (5) away from the plug-in ring (3) is connected to a top plate (6), a through hole (7) is provided on the top plate (6), a fixing rod (8) is fixedly connected to the top plate (6), and an end of the fixing rod (8) away from the top plate (6) is connected to a connecting ring (10); the planetary frame body (1) is connected to a plurality of fixing mechanisms; The planetary frame body (1) is connected to a plurality of mounting mechanisms, the mounting mechanisms comprising a fixed plate (16), two side plates (17) fixedly connected to both sides of the fixed plate (16), a slide groove (21) being provided on each of the two side plates (17), a slide rod (22) being slidably connected in the slide groove (21), a flip plate (24) being provided between the slide rods (22), a fixed block (20) being provided on the fixed plate (16), a screw hole being provided in the fixed block (20), a screw rod 2 (18) being rotatably connected in the fixed block (20), a handle 2 (19) being connected to the end of the screw rod 2 (18), a push plate (28) being connected to the end of the screw rod 2 (18) away from the fixed block (20), a bearing being connected between the push plate (28) and the screw rod 2 (18), and a sliding plate (25) being connected to the end of the push plate (28) away from the screw rod 2 (18).

2. The high-efficiency, two-stage planetary carrier structure according to claim 1, characterized in that: The multiple groups of tooth grooves in the mounting hole (2) are distributed in a ring array, and the cross-section of the tooth groove is trapezoidal or involute-shaped.

3. The high-efficiency, two-stage planetary carrier structure according to claim 1, characterized in that: A plurality of limiting teeth (4) are provided on the plug-in ring (3); the limiting teeth (4) of the plug-in ring (3) are engaged with the tooth grooves of the mounting hole (2); and the tooth profile angle of the limiting teeth (4) is an acute angle.

4. The high-efficiency, two-stage planetary carrier structure according to claim 1, characterized in that: The fixing rod (8) is provided with a thread (9), and the thread (9) of the fixing rod (8) is a fine thread.

5. The high-efficiency, two-stage planetary carrier structure according to claim 1, characterized in that: The fixing mechanism comprises a locking frame (11), a support frame (12) fixedly connected to the planetary frame body (1), an end of the support frame (12) away from the planetary frame body (1) is connected to a support plate (15), a socket is provided on the support plate (15), a screw (13) is connected between the locking frame (11) and the support plate (15), and a handle (14) is fixedly connected to the end of the screw (13).

6. The high-efficiency, two-stage planetary carrier structure according to claim 5, characterized in that: The locking frame (11) is a U-shaped structure, and an anti-slip groove is provided on the inner side thereof. The screw rod (13) and the jack of the support plate (15) are threadedly matched. The support frame (12) and the planetary frame body (1) are welded or integrally formed, and a reinforcing rib is provided on the support plate (15).

7. The high-efficiency, two-stage planetary carrier structure according to claim 1, characterized in that: The sliding groove (21) is a T-shaped groove, and the end of the sliding rod (22) is provided with a sliding block matching the T-shaped groove.

8. The high-efficiency, two-stage planetary carrier structure according to claim 1, characterized in that: The flip plate (24) is hinged to the slide bar (22), and a damping bearing is provided at the hinge.

9. The high-efficiency, two-stage planetary carrier structure according to claim 1, characterized in that: The push plate (28) and the sliding plate (25) are connected by a spring. The sliding plate (25) is provided with an arc-shaped guide groove that cooperates with the rotating rod (26). The sliding plate (25) is connected to the rotating rod (26). The side plate (17) is provided with a mounting groove (29). A second support frame (27) is connected between the mounting grooves (29). The second support frame (27) is connected to a clamping rod (31) and two clamping blocks (30).

10. The high-efficiency, two-stage planetary carrier structure according to claim 9, characterized in that: The contact surface of the clamping block (30) is made of rubber, and the end of the clamping rod (31) is provided with a conical guide head; the planetary carrier body (1), the plug ring (3) and the connecting frame (5) are made of alloy steel, and the surface is carburized and quenched.

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