High-power, high-torque and high-output TA type primary planet carrier

Abstract

The invention relates to the technical field of planet carriers, and discloses a high-power, high-torque and high-output TA type primary planet carrier which comprises a carrier body, one end of the carrier body is fixedly connected with a fixing flange conveniently connected with a sun gear, a mounting hole for mounting a planet gear is formed in the carrier body, and a circulation channel facilitating cooling and heat dissipation is formed in the carrier body. A circulation channel is arranged in the frame body, cooling liquid for heat exchange is arranged in the circulation channel, a heat dissipation plate is fixedly connected to the side face of the frame body and makes contact with the cooling liquid in the circulation channel, and a lubricating oil rotating mechanism for circulating lubricating oil is arranged in the frame body. Therefore, the vicious cycle from temperature rise to oil film fracture, then dry friction aggravation and finally higher temperature rise is blocked, damage such as pitting corrosion and stripping of tooth surfaces and bearing sintering is avoided, and the bearing limit and the service life of a system are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of planetary carriers, and in particular to a high-power, high-torque, high-output TA type first-stage planetary carrier. Background Art

[0002] The first-stage planet carrier of the TA model is the core load-bearing component in the planetary gear transmission system. Its main function is to support and position the first-stage planet gear, transmit input torque, and bear the main load generated by the meshing of the sun gear, planet gear and inner ring gear.

[0003] It is usually made of high-strength alloy steel forging or precision casting, and its structure includes a central input connection, multiple evenly distributed planetary gear shaft mounting holes, and spokes or an integral frame connecting these shaft holes; the input connection part is a spline or flange, etc., and the planetary gear shaft mounting holes are used to install planetary gears and bearings;

[0004] The planetary carrier must have extremely high rigidity, strength and dimensional stability to ensure precise and equal positioning between the planetary gears and uniform load distribution. Its performance directly affects the transmission efficiency, load-bearing capacity, stability and service life of the entire reducer.

[0005] The existing high-power, high-torque, high-output TA model first-stage planetary carrier still has the following shortcomings:

[0006] When the existing first-stage planetary carrier is in use, the intense meshing friction between the planetary wheels and the gears generates local high temperatures, causing the viscosity of the lubricating oil on the planetary wheel surface to drop sharply, accelerating volatilization and splashing. At the same time, high-temperature oxidation causes the oil film to rupture and fail, leading to continuous deterioration of tooth surface lubrication. This process forms a vicious cycle. The lack of lubrication exacerbates the dry friction temperature rise, and the temperature rise further destroys the residual oil film, ultimately causing irreversible damage such as sintering of the planetary wheel bearings and pitting and peeling of the tooth surface, seriously restricting the load limit and life of the transmission system.

[0007] Therefore, we propose a high-power, high-torque, high-output TA type first-stage planetary carrier to solve the problems in the above background. Summary of the Invention

[0008] The purpose of the present invention is to provide a high-power, high-torque, high-output TA type first-stage planetary carrier to solve the problem raised in the above background technology that the intense meshing friction between the planetary gear and the gear generates local high temperature, resulting in a sudden drop in the viscosity of the lubricating oil on the surface of the planetary gear and accelerated volatilization and splashing.

[0009] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0010] The high-power, high-torque, high-output TA model first-stage planetary carrier includes a frame body, one end of the frame body is fixedly connected to a fixing flange for easy connection with the sun gear, the frame body is provided with mounting holes for installing planetary gears, the frame body is provided with a circulation channel for easy cooling and heat dissipation, the circulation channel is provided with coolant for heat exchange, a heat sink is fixedly connected to the side of the frame body, the heat sink is in contact with the coolant in the circulation channel, and the frame body is provided with a lubricating oil rotating mechanism for circulating the lubricating oil.

[0011] The lubricating oil rotating mechanism includes a plurality of oil guide grooves opened inside the frame body, a spiral tube for conveying lubricating oil is fixedly connected inside the frame body, one end of the spiral tube corresponds to the oil guide groove, and a plurality of oil outlet holes are opened on the side of the frame body.

[0012] One end of the plurality of oil outlet holes is provided with a pressurizing nozzle for pressurizing the lubricating oil.

[0013] A filter screen for filtering the lubricating oil is fixedly connected inside the frame, and the filter screen is located between the oil guide groove and the spiral tube.

[0014] The bottom of the frame is threadedly connected with a disassembly column, one end of which is fixedly connected with a magnet for adsorbing debris in the lubricating oil, and the magnet is located at the bottom of the oil guide groove.

[0015] A dirt storage tank for temporarily storing debris in the lubricating oil is provided in the oil guide groove.

[0016] An oil filling hole is provided at the mounting hole inside the frame body for adding lubricating oil to the mounting hole.

[0017] An oil seal is embedded in the mounting hole to prevent lubricating oil from leaking.

[0018] The outer wall of the frame is threadedly connected with a blocking block for protecting the oil filling hole, and the blocking block is threadedly connected in the oil filling hole.

[0019] A filter shell for filtering lubricating oil is fixedly connected in the oil filling hole.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] When the frame rotates, the sun gear is stationary, causing the sun gear to drive the planetary gears to rotate, and the frame drives the coolant to flow inside the circulation channel under the action of centrifugal force, so that the coolant absorbs the heat inside the frame, transfers it to the heat sink through the coolant, and then dissipates the heat through the heat sink to complete the heat dissipation inside the frame; this design effectively suppresses local temperature rise and maintains the stability of the lubricating oil film, thereby blocking the vicious cycle of "temperature rise to oil film rupture, then to intensified dry friction, and finally higher temperature rise", avoiding damage such as pitting and spalling of the tooth surface and sintering of the bearings, and significantly improving the system's load limit and life.

[0022] During the rotation of the planetary gear, the lubricating oil on the surface of the planetary gear will slide into the inside of the frame, and reach one end of the spiral tube through several oil guide grooves inside the frame. The centrifugal force generated by the rotation of the frame drives the lubricating oil at one end of the spiral tube to the oil outlet hole at the other end. The lubricating oil at the oil outlet hole is pressurized and sprayed out through the pressurized nozzle, and the lubricating oil is sprayed onto the surface of the planetary gear again, completing the recycling of the lubricating oil. At the same time, the flowing lubricating oil can also take away the heat from the surface of the planetary gear, so that the heat can be discharged faster through the frame, thereby accelerating the heat dissipation effect.

[0023] The lubricating oil on the surface of the planetary gear will slide into the inside of the frame, and reach one end of the spiral tube through several oil guide grooves inside the frame. When the lubricating oil passes through the oil guide grooves, it is filtered by the filter screen to filter the fine iron filings generated when the planetary gear and the sun gear are driven, to prevent blockage, and the iron filings are deposited inside the sewage storage tank. The iron filings are adsorbed and fixed by the magnet at one end of the disassembly column, so that the iron filings are placed at one end of the disassembly column. The disassembly column can be taken out by rotating it, and the iron filings at one end of the disassembly column can be cleaned, so as to facilitate the collection of the fine iron filings generated when the planetary gear and the sun gear are driven, and prevent them from affecting the transmission between the planetary gear and the sun gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 Schematic diagram of the cross-sectional structure of the lubricating oil rotary mechanism of the present invention;

[0026] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention;

[0027] Figure 4 For the present invention Figure 2 A in the middle is an enlarged structural diagram;

[0028] Figure 5 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0029] Figure 6 For the present invention Figure 3 Enlarged structural diagram at point C in the middle.

[0030] Among them: 1. Frame; 2. Fixing flange; 3. Mounting hole; 4. Circulation channel; 5. Coolant; 6. Heat sink; 7. Oil guide groove; 8. Spiral tube; 9. Oil outlet; 10. Pressurized nozzle; 11. Filter screen; 12. Disassembly column; 13. Magnet; 14. Sewage storage tank; 15. Oil filling hole; 16. Oil seal; 17. Block; 18. Filter shell. DETAILED DESCRIPTION

[0031] 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 creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1-6 , the present invention provides a technical solution:

[0033] like Figures 1-6 As shown, the high-power, high-torque, high-output TA type first-stage planetary frame includes a frame body 1, one end of the frame body 1 is fixedly connected to a fixed flange 2 for connecting to the sun gear, a mounting hole 3 for mounting the planetary gear is provided inside the frame body 1, a circulation channel 4 for cooling and heat dissipation is provided inside the frame body 1, a coolant 5 for heat exchange is provided in the circulation channel 4, a heat sink 6 is fixedly connected to the side of the frame body 1, the heat sink 6 is in contact with the coolant 5 in the circulation channel 4, and a lubricating oil rotating mechanism for circulating the lubricating oil is provided inside the frame body 1.

[0034] like Figures 1-6 As shown, by installing the planetary gear in the mounting hole 3, the sun gear in the fixed flange 2, and the fixed flange 2 on the output shaft, the sun gear meshes with the planetary gear, and the output shaft drives the sun gear to rotate, driving the planetary gear to rotate inside the frame 1, thereby completing the transmission of torque; when the frame 1 rotates, the sun gear is stationary, so that the sun gear drives the planetary gear to rotate, and the frame 1 drives the coolant 5 to flow inside the circulation channel 4 under the action of centrifugal force, so that the coolant 5 absorbs the heat inside the frame 1, and transfers it to the heat sink 6 through the coolant 5, and then dissipates the heat through the heat sink 6 to complete the heat dissipation inside the frame 1; this design effectively suppresses local temperature rise and maintains the stability of the lubricating oil film, thereby blocking the vicious cycle of "temperature rise to oil film rupture, then to increased dry friction, and finally to higher temperature rise", avoiding damage such as pitting and spalling on the tooth surface and sintering of the bearing, and significantly improving the system's load limit and life. Among them, the centrifugal heat dissipation system can break through the thermal bottleneck and provide a key guarantee for the high power and high torque output of the planetary frame.

[0035] Further, such as Figure 2 and Figure 4 As shown, the lubricating oil rotating mechanism includes a plurality of oil guide grooves 7 provided inside the frame 1, a spiral tube 8 for conveying the lubricating oil is fixedly connected inside the frame 1, one end of the spiral tube 8 corresponds to the oil guide groove 7, a plurality of oil outlet holes 9 are provided on the side of the frame 1, and a pressurizing nozzle 10 for pressurizing the lubricating oil is installed at one end of the plurality of oil outlet holes 9.

[0036] During the rotation of the planetary gear, the lubricating oil on the surface of the planetary gear will slide into the inside of the frame 1, and reach one end of the spiral tube 8 through the several oil guide grooves 7 inside the frame 1. The centrifugal force generated by the rotation of the frame 1 causes the lubricating oil at one end of the spiral tube 8 to reach the oil outlet 9 at the other end under the drive of the centrifugal force. The lubricating oil at the oil outlet 9 is pressurized and sprayed out through the pressurized nozzle 10, and the lubricating oil is sprayed onto the surface of the planetary gear again, completing the recycling of the lubricating oil. At the same time, the flowing lubricating oil can also take away the heat from the surface of the planetary gear, so that the heat can be discharged faster through the frame 1, thereby accelerating the heat dissipation effect.

[0037] Among them, the working principle of the pressurized nozzle 10 is to accelerate the fluid by utilizing the internal contraction flow channel. When the fluid passes through the narrow section, the flow velocity increases and the pressure decreases, thereby achieving efficient energy conversion. This is an existing technology and will not be described in detail.

[0038] Further, such as Figure 2 and Figure 4 As shown, the frame 1 is fixedly connected to a filter screen 11 for filtering the lubricating oil. The filter screen 11 is located between the oil guide groove 7 and the spiral tube 8. A disassembly column 12 is threadedly connected to the bottom of the frame 1. One end of the disassembly column 12 is fixedly connected to a magnet 13 for adsorbing impurities in the lubricating oil. The magnet 13 is located at the bottom of the oil guide groove 7. A sewage storage tank 14 is provided in the oil guide groove 7 for temporarily storing impurities in the lubricating oil.

[0039] The lubricating oil on the surface of the planetary gear will slide into the inside of the frame 1, and reach one end of the spiral tube 8 through several oil guide grooves 7 inside the frame 1. When the lubricating oil passes through the oil guide grooves 7, the lubricating oil is filtered through the filter screen 11, and the fine iron filings generated when the planetary gear and the sun gear are driven are filtered to prevent blockage, and the iron filings are deposited inside the sewage storage tank 14. The iron filings are adsorbed and fixed by the magnet 13 at one end of the disassembly column 12, so that the iron filings are placed at one end of the disassembly column 12. The disassembly column 12 can be taken out by rotating it, and then the iron filings at one end of the disassembly column 12 can be cleaned, which is convenient for collecting the fine iron filings generated when the planetary gear and the sun gear are driven, and prevent them from affecting the transmission between the planetary gear and the sun gear.

[0040] Further, such as Figure 1 、 Figure 3 and Figure 5 As shown, an oil filling hole 15 is opened at the mounting hole 3 inside the frame 1 for adding lubricating oil to the mounting hole 3, an oil seal 16 is embedded in the mounting hole 3 to prevent the lubricating oil from leaking, and a block 17 is threadedly connected to the outer wall of the frame 1 to protect the oil filling hole 15, and the block 17 is threadedly connected to the oil filling hole 15, and a filter shell 18 for filtering the lubricating oil is fixedly connected to the oil filling hole 15.

[0041] When adding lubricating oil to the planetary gear shaft, the block 17 is opened and the lubricating oil is injected into the oil filling hole 15. Impurities in the lubricating oil are filtered through the filter shell 18, and the lubricating oil is injected into the planetary gear shaft inside the mounting hole 3. The oil seal 16 prevents the lubricating oil from leaking.

[0042] The working principle of the first-stage planetary carrier of this high-power, high-torque, high-output TA model is as follows:

[0043] When the frame 1 rotates, the sun gear is stationary, causing the sun gear to drive the planetary gears to rotate, and the frame 1 drives the coolant 5 to flow inside the circulation channel 4 under the action of centrifugal force, so that the coolant 5 absorbs the heat inside the frame 1, and transfers it to the heat sink 6 through the coolant 5, and then dissipates the heat through the heat sink 6 to complete the heat dissipation inside the frame 1; this design effectively suppresses local temperature rise and maintains the stability of the lubricating oil film, thereby blocking the vicious cycle of "temperature rise to oil film rupture, then to intensified dry friction, and finally higher temperature rise", avoiding damage such as pitting and spalling of the tooth surface and sintering of the bearings, and significantly improving the system's load limit and life.

[0044] During the rotation of the planetary gear, the lubricating oil on the surface of the planetary gear will slide into the inside of the frame 1, and reach one end of the spiral tube 8 through the several oil guide grooves 7 inside the frame 1. The centrifugal force generated by the rotation of the frame 1 causes the lubricating oil at one end of the spiral tube 8 to reach the oil outlet 9 at the other end under the drive of the centrifugal force. The lubricating oil at the oil outlet 9 is pressurized and sprayed out through the pressurized nozzle 10, and the lubricating oil is sprayed onto the surface of the planetary gear again, completing the recycling of the lubricating oil. At the same time, the flowing lubricating oil can also take away the heat from the surface of the planetary gear, so that the heat can be discharged faster through the frame 1, thereby accelerating the heat dissipation effect.

[0045] The lubricating oil on the surface of the planetary gear will slide into the inside of the frame 1, and reach one end of the spiral tube 8 through several oil guide grooves 7 inside the frame 1. When the lubricating oil passes through the oil guide grooves 7, the lubricating oil is filtered through the filter screen 11, and the fine iron filings generated when the planetary gear and the sun gear are driven are filtered to prevent blockage, and the iron filings are deposited inside the sewage storage tank 14. The iron filings are adsorbed and fixed by the magnet 13 at one end of the disassembly column 12, so that the iron filings are placed at one end of the disassembly column 12. The disassembly column 12 can be taken out by rotating it, and then the iron filings at one end of the disassembly column 12 can be cleaned, which is convenient for collecting the fine iron filings generated when the planetary gear and the sun gear are driven, and prevent them from affecting the transmission between the planetary gear and the sun gear.

[0046] Although specific embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit thereof, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high-power, high-torque, high-output TA type first-stage planetary carrier, comprising a carrier body (1), characterized in that: One end of the frame (1) is fixedly connected to a fixing flange (2) for connecting to the sun gear, a mounting hole (3) for mounting the planetary gear is provided inside the frame (1), a circulation channel (4) for cooling and heat dissipation is provided inside the frame (1), a coolant (5) for heat exchange is provided in the circulation channel (4), a heat sink (6) is fixedly connected to the side of the frame (1), the heat sink (6) is in contact with the coolant (5) in the circulation channel (4), and a lubricating oil rotating mechanism for circulating the lubricating oil is provided inside the frame (1).

2. The high-power, high-torque, high-output TA type first-stage planetary carrier according to claim 1, characterized in that: The lubricating oil rotating mechanism comprises a plurality of oil guide grooves (7) provided inside the frame (1); a spiral tube (8) for conveying lubricating oil is fixedly connected inside the frame (1); one end of the spiral tube (8) corresponds to the oil guide groove (7); and a plurality of oil outlet holes (9) are provided on the side of the frame (1).

3. The high-power, high-torque, high-output TA type first-stage planetary carrier according to claim 2, characterized in that: One end of each of the oil outlet holes (9) is provided with a pressurizing nozzle (10) for pressurizing the lubricating oil.

4. The high-power, high-torque, high-output TA type first-stage planetary carrier according to claim 2, characterized in that: A filter screen (11) for filtering lubricating oil is fixedly connected to the interior of the frame (1), and the filter screen (11) is located between the oil guide groove (7) and the spiral tube (8).

5. The high-power, high-torque, high-output TA type first-stage planetary carrier according to claim 4, characterized in that: The bottom of the frame (1) is threadedly connected to a disassembly column (12), one end of which is fixedly connected to a magnet (13) for absorbing debris in the lubricating oil, and the magnet (13) is located at the bottom of the oil guide groove (7).

6. The high-power, high-torque, high-output TA type first-stage planetary carrier according to claim 5, characterized in that: A dirt storage tank (14) for temporarily storing debris in the lubricating oil is provided in the oil guide tank (7).

7. The high-power, high-torque, high-output TA type first-stage planetary carrier according to claim 1, characterized in that: An oil injection hole (15) is provided at the mounting hole (3) inside the frame (1) for adding lubricating oil to the mounting hole (3).

8. The high-power, high-torque, high-output TA type first-stage planetary carrier according to claim 7, characterized in that: An oil seal (16) is embedded in the mounting hole (3) to prevent lubricating oil from leaking.

9. The high-power, high-torque, high-output TA type first-stage planetary carrier according to claim 8, characterized in that: The outer wall of the frame (1) is threadedly connected to a blocking block (17) for protecting the oil filling hole (15), and the blocking block (17) is threadedly connected in the oil filling hole (15).

10. The high-power, high-torque, high-output TA type first-stage planetary carrier according to claim 9, characterized in that: A filter housing (18) for filtering lubricating oil is fixedly connected to the oil filling hole (15).

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