Improved sun gear

Abstract

The utility model relates to the technical field of improved sun gears, and discloses an improved sun gear which comprises a wheel disk, a protection assembly is arranged on the outer wall of the wheel disk, the protection assembly is used for preventing fatigue damage of the sun gear, the protection assembly comprises a tungsten carbide coating, and the tungsten carbide coating is arranged on the outer wall of the wheel disk. A tungsten carbide coating is arranged on the outer wall of the radial plate, the tungsten carbide coating has extremely high hardness and can effectively improve the abrasion resistance of the radial plate, a polytetrafluoroethylene coating is arranged on the outer wall of the tungsten carbide coating and has an extremely low friction coefficient, and a lubricating assembly is arranged in the radial plate and used for lubricating equipment in the using process. According to the sun gear, the abrasion resistance of the sun gear in the moving process can be enhanced through the tungsten carbide coating, so that the effect of relieving fatigue damage of the sun gear is achieved, the problem that a traditional sun gear is prone to fatigue damage under the action of alternating loads borne for a long time is solved, the transmission efficiency is improved, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to an improved sun gear technical field especially relates to an improved sun gear. BACKGROUND

[0002] Among numerous mechanical transmission systems, the sun gear as the key component of planetary gear transmission plays a vital role, which is widely used in automobile transmission, industrial robot joint transmission, mining machinery and aerospace and many other fields, undertakes the important mission of power transmission and speed, torque conversion, with the continuous development of modern industry towards high precision, high efficiency, high reliability and adaptation to complex working conditions, the performance requirements of the sun gear are increasingly stringent, the traditional sun gear gradually exposes some performance limitations in the long-term use process, and it is difficult to meet the diversified and complex industrial application requirements at present, therefore, it has important practical significance to research and develop an improved sun gear, which aims to comprehensively improve the comprehensive performance of the sun gear through innovative design and technical application, so that it can better adapt to various working conditions and ensure the stable and efficient operation of the mechanical transmission system.

[0003] The traditional sun gear is usually mainly composed of hub, spoke and rim, the hub is located at the center position of the sun gear, is used for connecting with the transmission shaft, realizes the input or output transmission of power, the spoke is connected between the hub and the rim in a radial manner, plays the role of transmitting force and supporting, and guarantees the stability of the whole sun gear structure, and the rim is an annular part with involute tooth profile on the outer periphery, and the power transmission in the planetary gear train is completed through the meshing with the planetary gear.

[0004] However, in the actual use process of the traditional sun gear, the tooth surface and the planetary gear are frequently meshed, and the relative motion between the parts, the serious wear is prone to occur, with the increase of the use time, the wear not only causes the dimensional accuracy of the sun gear parts to decrease, affects the good meshing and cooperative work between the sun gear and other matched parts, but also further shortens the service life of the sun gear, increases the maintenance cost and replacement frequency of the equipment, restricts the stable performance of the mechanical transmission system and the efficient operation of the equipment, and cannot meet the long-time reliable work requirements of modern industry for the sun gear, therefore, an improved sun gear is provided to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides an improved sun gear, which aims at improving the problem that the tooth surface and the planetary gear are frequently meshed in the running process of the traditional sun gear in the prior art, and the hub, spoke and other parts have relative motion with other related parts, lack effective wear-resistant protection means, and the surface is easy to be worn.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme:

[0007] An improved sun gear, including the web, the web outer wall is provided with protection assembly, the protection assembly is used for preventing the sun gear fatigue damage from;

[0008] The protection assembly includes the tungsten carbide coating The tungsten carbide coating is arranged on the web outer wall, the tungsten carbide coating has very high hardness, can effectively improve the wear resistance of the web, the tungsten carbide coating outer wall is provided with polytetrafluoroethylene coating, the polytetrafluoroethylene coating has very low friction coefficient, can greatly reduce the friction between the contact surface, the polytetrafluoroethylene coating outer surface is fixedly connected with the gear tooth, the web is internally provided with lubricating assembly, the lubricating assembly is used for lubricating the equipment during use;

[0009] As a further description of the above technical scheme:

[0010] The lubricating assembly includes oil storage cavity and connecting ring, the oil storage cavity is fixedly connected in the web, and the connecting ring is fixedly connected on one side of the oil storage cavity on one side;

[0011] As a further description of the above technical scheme:

[0012] The web is internally provided with oil channel, and the oil channel is communicated with the oil storage cavity;

[0013] As a further description of the above technical scheme:

[0014] The web is internally provided with the heat dissipation groove, and the heat dissipation groove is communicated with the oil channel;

[0015] As a further description of the above technical scheme:

[0016] The connecting ring is internally provided with coarse filter screen, and the coarse filter screen is used to pass relatively larger particle size impurities, to prevent the impurities from blocking the oil channel;

[0017] As a further description of the above technical scheme:

[0018] The connecting ring is internally provided with fine filter screen, and the fine filter screen is used to intercept the impurities of smaller size, but still cause damage to the sun gear lubricating part;

[0019] As a further description of the above technical scheme:

[0020] The oil storage cavity adopts stainless steel material and is used for storing and conveying lubricating oil.

[0021] The utility model has the advantages of:

[0022] 1. The utility model discloses a tungsten carbide coating can enhance the wear resistance of sun gear in the movement process, and the polytetrafluoroethylene coating can reduce the friction coefficient between the web and other related parts of sun gear in the use process, thereby realizing the effect of alleviating the fatigue failure of sun gear, solving the problem that the traditional sun gear is prone to fatigue failure under the action of long-term alternating load, and improving the transmission efficiency and service life.

[0023] 2. The utility model discloses a oil storage cavity is delivered to the lubricating oil in the oil channel, and the lubricating oil is transported to each connecting position through the oil channel effect, and the oil channel effect can also play a certain heat dissipation effect, thereby reach the effect that sun gear can automatically add lubricating oil in the use process, to solve the problem that the traditional sun gear is smeared or poured into the lubricating position of sun gear by artificial irregularly, and the lubricating oil supply is not timely, and the lubricating quality and working performance are improved. DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic view of an improved sun gear provided by the utility model;

[0025] Figure 2 It is Figure 1 the enlarged view of A in the utility model;

[0026] Figure 3 It is a structure schematic view of one side of the oil storage cavity of an improved sun gear provided by the utility model.

[0027] Legend:

[0028] 1, web; 2, tungsten carbide coating; 3, polytetrafluoroethylene coating; 4, gear tooth; 5, oil storage cavity; 6, oil channel; 7, heat dissipation groove; 8, connecting ring; 9, coarse filter screen; 10, fine filter screen. DETAILED DESCRIPTION

[0029] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0030] Referring to Figure 1 , the utility model provides an embodiment: an improved sun gear, including the web 1, the web 1 outer wall is provided with protection subassembly, and protection subassembly is used to prevent sun gear fatigue damage;

[0031] The protection assembly comprises a tungsten carbide coating 2, which is arranged on the outer wall of the spoke 1. The tungsten carbide coating 2 has extremely high hardness and can effectively improve the wear resistance of the spoke 1. The tungsten carbide coating 2 is evenly coated on the outer wall of the spoke 1. Since the tungsten carbide coating 2 has extremely high hardness, the coating can effectively enhance the wear resistance of the spoke 1, so that the sun gear can resist external physical wear and tear during high load and long time operation, reduce the heat and wear generated by friction of the spoke 1, and improve the overall durability. The outer wall of the tungsten carbide coating 2 is provided with a polytetrafluoroethylene coating 3. The polytetrafluoroethylene coating 3 has extremely low friction coefficient, which can greatly reduce the friction between the contact surfaces. The outer surface of the polytetrafluoroethylene coating 3 is fixedly connected with gear teeth 4. The gear teeth 4 are closely engaged with other gear systems to ensure that the sun gear can be stably transmitted with the driving system during work. The spoke 1 is internally provided with a lubricating assembly for lubricating the equipment during use.

[0032] Specifically, when the sun gear needs to transmit a large torque and bear a very high load, the relative movement between the tooth surface and the planet gear and other related parts of the spoke 1 and other related parts will generate extremely violent friction. By spraying the tungsten carbide coating 2 on the surface of the spoke 1, the wear resistance and service life of each component of the sun gear can be significantly improved. The spoke 1, as an important part of the sun gear, plays a key role in connecting the hub and the rim. It not only transmits the torque from the hub, but also bears various forces generated during operation, including radial force, axial force and torque. Therefore, the spoke 1 needs to have sufficient strength, stiffness and wear resistance to ensure that the sun gear can maintain structural stability and reliability during long-term use. The tungsten carbide coating 2 has extremely high hardness and wear resistance. By spraying the coating, the wear resistance of the spoke 1 surface in a high-strength working environment can be effectively enhanced, and the damage of the components caused by friction and wear can be reduced, thereby improving the overall working efficiency and service life of the sun gear. In addition, the polytetrafluoroethylene coating 3 provides additional advantages between the spoke 1 and other related parts. The polytetrafluoroethylene coating 3 has very low friction coefficient, which means that the friction between the contact surfaces will be greatly reduced when the spoke 1 and other components move relative to each other, greatly reducing wear and ensuring smooth movement. Especially when the sun gear is running at high speed, the polytetrafluoroethylene coating 3 can effectively prevent excessive heat accumulation, reduce excessive wear and energy waste caused by friction. In addition, the polytetrafluoroethylene material also has a certain self-cleaning ability, which can prevent foreign matter and dirt from adhering to the surface of the spoke 1. Even if a small amount of impurities adhere to the surface of the coating, they can be easily shaken off or cleaned off as the sun gear rotates, keeping the surface of the spoke 1 clean and further prolonging its service life and reducing maintenance costs.

[0033] Reference Figure 2 and Figure 3The lubricating assembly comprises an oil storage cavity 5 and a connecting ring 8, the oil storage cavity 5 is fixedly connected inside the spoke 1, one side of the connecting ring 8 is fixedly connected to one side of the oil storage cavity 5, an oil channel 6 is arranged inside the spoke 1, the oil channel 6 ensures that the lubricating oil flows from the oil storage cavity 5 to the area inside the spoke 1 that needs to be lubricated, the direction and diameter of the oil channel 6 ensure that the lubricating oil can flow at an appropriate flow rate to cover the key parts of the spoke 1, the oil channel 6 is in communication with the oil storage cavity 5, and a heat dissipation groove 7 is arranged inside the spoke 1, which not only can make the lubricating oil uniformly distributed, but also can use the oil flow to take away the excess heat, thereby preventing the spoke 1 from overheating, and the heat dissipation groove 7 is in communication with the oil channel 6.

[0034] Specifically, in many industrial application scenarios, the equipment needs to run continuously for a long time, in order to ensure its smooth and stable operation, the delivery of lubricating oil is crucial, through the oil storage cavity 5, the lubricating oil is effectively sent into the oil channel 6, thereby ensuring that the sun gear and other related parts are adequately and appropriately lubricated, the output end of the oil storage cavity 5 is connected to the oil channel 6 through the connecting ring 8, and the connecting ring 8 is provided with a coarse filter screen 9 and a fine filter screen 10, which respectively undertake important filtering functions, first, the coarse filter screen 9 is designed with a larger pore size, which can allow larger particles to pass through, avoiding the accumulation of these larger particles at the connection between the connecting ring 8 and the oil channel 6, causing blockage or poor flow, thereby affecting the flow of lubricating oil and the lubrication effect of the sun gear, the existence of the coarse filter screen 9 helps to improve the flowability of the lubricating oil and ensure the clean operation of the system.

[0035] Referring to Figure 2 and Figure 3 , the connecting ring 8 is provided with a coarse filter screen 9 inside, the coarse filter screen 9 is used to allow relatively larger particles to pass through, preventing the oil channel 6 from being blocked by impurities, the connecting ring 8 is provided with a fine filter screen 10 inside, the fine filter screen 10 is used to intercept impurities that are smaller in size but still cause damage to the lubricated parts of the sun gear, the oil storage cavity 5 is made of stainless steel and is used to store and deliver lubricating oil.

[0036] Specifically, then, the fine filter screen 10 plays a more fine filtering role, it can intercept impurities that are small in size and easy to enter the oil storage cavity 5, for these small particles that are difficult to clean, the fine filter screen 10 is particularly important, it can effectively prevent impurities from entering the oil storage cavity 5, reduce the pollution of lubricating oil, thereby ensuring the cleanliness of the lubricating oil, avoiding wear and tear or blockage caused by impurities, and ensuring the long-term stable operation of the lubricating system, under the guidance of the oil channel 6, the lubricating oil can be quickly and uniformly delivered to the contact surface of the sun gear and other moving parts, the timely supply of lubricating oil can reduce friction and wear, reduce heat and energy loss caused by excessive friction during operation, thereby improving transmission efficiency and prolonging the service life of the sun gear and the entire transmission system.

[0037] Working principle: in the gear, by spraying tungsten carbide coating 2 on the surface of the web 1, can significantly enhance the wear resistance of each part of the sun gear, the web 1 plays a key role in connecting the hub and rim, in the process of transmitting torque and bearing various forces of the sun gear, need to have enough strength and stiffness to guarantee the stability of the overall structure, by spraying tungsten carbide coating 2 on the surface of the web 1, can effectively improve the wear resistance of the web 1, by the action of polytetrafluoroethylene coating 3 when the web 1 and other related parts relative motion, can greatly reduce the friction between the contact surface, make the relative motion more smooth, at the same time, polytetrafluoroethylene coating 3 also has certain self cleaning and anti sticking performance, when the sun gear running, some foreign impurities are not easy to adhere to the surface of the web 1, even if there are a small amount of impurities adhere, also can be in the process of sun gear movement more easily be thrown off or cleaned, when the sun gear needs to be lubricated, the lubricating oil can be delivered to the oil channel 6 inside the sun gear when the sun gear is working through the oil storage cavity 5, the output end of the oil storage cavity 5 is fixedly connected with the connecting ring 8, the coarse filter screen 9 is arranged in the connecting ring 8, so that the relatively large particle size impurities can pass through, avoiding the large particles to be quickly accumulated and blocked at the connecting position of the connecting ring 8, the fine filter screen 10 can quickly intercept the small size impurities which are difficult to clean and enter the oil storage cavity 5, under the guidance of the oil channel 6, the lubricating oil can be quickly delivered to the cooperation position of the sun gear and other parts, ensuring that each part of the sun gear can be fully and appropriately lubricated during operation, thereby reducing friction and wear, improving transmission efficiency, prolonging the service life of the sun gear and ensuring the stable operation of the whole transmission system.

[0038] Finally, it should be pointed out that: the above described only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the scope of protection of the present application.

Claims

1. An improved sun gear, comprising spokes (1), characterized in that: The outer wall of the spoke (1) is provided with a protective component, which is used to prevent fatigue damage to the sun gear; The protective component includes a tungsten carbide coating (2) which is disposed on the outer wall of the spoke (1). The tungsten carbide coating (2) has extremely high hardness and can effectively improve the wear resistance of the spoke (1). The outer wall of the tungsten carbide coating (2) is provided with a polytetrafluoroethylene coating (3). The polytetrafluoroethylene coating (3) has an extremely low coefficient of friction and can greatly reduce the friction between the contact surfaces. The outer surface of the polytetrafluoroethylene coating (3) is fixedly connected with gear teeth (4). The spoke (1) is provided with a lubrication component, which is used to lubricate the equipment during use.

2. An improved sun gear according to claim 1, characterized in that: The lubrication assembly includes an oil reservoir (5) and a connecting ring (8). The oil reservoir (5) is fixedly connected inside the spoke (1), and one side of the connecting ring (8) is fixedly connected to one side of the oil reservoir (5).

3. An improved sun gear according to claim 2, characterized in that: The spoke (1) has an oil passage (6) inside, which is connected to the oil storage cavity (5).

4. An improved sun gear according to claim 3, characterized in that: The spoke (1) has a heat dissipation groove (7) inside, and the heat dissipation groove (7) is connected to the oil passage (6).

5. An improved sun gear according to claim 4, characterized in that: The connecting ring (8) has a coarse filter (9) inside. The coarse filter (9) is used to allow impurities of relatively large particle size to pass through, preventing impurities from clogging the oil passage (6).

6. An improved sun gear according to claim 5, characterized in that: The connecting ring (8) has a fine filter (10) inside, which is used to intercept small impurities that can still damage the lubrication of the sun gear.

7. An improved sun gear according to claim 6, characterized in that: The oil storage chamber (5) is made of stainless steel and is used to store and transport lubricating oil.

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