阅读说明：本技术 一种齿轮箱及风力发电装置 (Gear box and wind power generation device ) 是由 徐国民 向鹏生 张波 孙义忠 于 2019-10-23 设计创作，主要内容包括：本发明公开了一种齿轮箱及风力发电装置,属于风力发电设备技术领域。本发明所提供的齿轮箱包括箱体、行星齿轮机构和润滑机构,润滑机构包括设置在行星架和销轴上的油路以及能够随行星架同步旋转的喷油管,喷油管的喷油口正对齿圈和行星轮的啮合区域设置。该齿轮箱通过设置润滑机构,能够将润滑油从齿轮箱箱体的润滑油池中引出,并利用喷油管将润滑油喷射在齿圈和行星轮的啮合区域,以达到润滑啮合齿面、降低啮合齿面磨损以及带走啮合齿面产生的热量的目的。且由于喷油管能够随行星架同步旋转,喷油管能够始终对齿圈和行星轮的啮合区域进行润滑,从而实现了对整个齿圈进行均匀地润滑,进而降低了齿圈生锈的概率,提高了齿圈的使用寿命。(The invention discloses a gear box and a wind power generation device, and belongs to the technical field of wind power generation equipment. The gear box provided by the invention comprises a box body, a planetary gear mechanism and a lubricating mechanism, wherein the lubricating mechanism comprises an oil way arranged on a planetary frame and a pin shaft and an oil injection pipe capable of synchronously rotating along with the planetary frame, and an oil injection port of the oil injection pipe is over against a meshing area of a gear ring and a planetary gear. The gear box can lead lubricating oil out of a lubricating oil pool of a gear box body by arranging the lubricating mechanism, and the lubricating oil is sprayed in a meshing area of the gear ring and the planet wheel by the oil spraying pipe so as to achieve the purposes of lubricating a meshing tooth surface, reducing the abrasion of the meshing tooth surface and taking away heat generated by the meshing tooth surface. And because the oil spout pipe can follow planet carrier synchronous revolution, the oil spout pipe can lubricate the meshing region of ring gear and planet wheel all the time to realized lubricating evenly whole ring gear, and then reduced the rusty probability of ring gear, improved the life of ring gear.)

1. A gearbox, comprising:

a box body;

the planetary gear mechanism is arranged in the box body and comprises a gear ring (10), a planetary gear (30), a sun gear (70) and a planet carrier (20), the gear ring (10) is fixedly arranged on the box body, the planetary gear (30) is meshed with the gear ring (10) and the sun gear (70) at the same time, and the planet carrier (20) is connected with the planetary gear (30) through a pin shaft (40);

the lubricating mechanism comprises an oil way and an oil injection pipe (60), the oil way is arranged inside the pin shaft (40) and the planet carrier (20), an oil inlet of the oil way is communicated with a lubricating oil pool in the box body, an oil outlet of the oil way is communicated with the oil injection pipe (60), an oil injection port of the oil injection pipe (60) is just opposite to the meshing area of the gear ring (10) and the planet wheel (30), and the oil injection pipe (60) is configured to rotate synchronously with the planet carrier (20).

2. A gearbox according to claim 1,

planet carrier (20) include web (201) that two intervals set up, two web (201) are located the both sides of planet wheel (30), the oil circuit is including being located two first branch oil outlet (23) and second branch oil outlet (26) on web (201) respectively, first branch oil outlet (23) with the oil-out of second branch oil outlet (26) respectively is connected with one spout oil pipe (60), two spout oil pipe (60) and just to respectively the both ends setting of ring gear (10) with the meshing region of planet wheel (30).

3. A gearbox according to claim 2,

the oil circuit is characterized by further comprising a transition oil circuit arranged on the pin shaft (40), the transition oil circuit comprises a first oil distribution branch (22) and a second oil distribution branch (25), one end of the first oil distribution branch (22) is communicated with the lubricating oil pool, the other end of the first oil distribution branch is communicated with the first oil outlet branch (23), one end of the second oil distribution branch (25) is communicated with the lubricating oil pool, and the other end of the second oil distribution branch is communicated with the second oil outlet branch (26).

4. A gearbox according to claim 3,

the transition oil way further comprises a pin shaft oil inlet branch (27), an oil inlet of the pin shaft oil inlet branch (27) is communicated with the lubricating oil pool, and an oil outlet of the pin shaft oil inlet branch (27) is communicated with the first oil distribution branch (22) and the second oil distribution branch (25) simultaneously.

5. A gearbox according to claim 4,

the lubricating oil pool is characterized in that a planet carrier oil inlet branch (21) is further arranged on the planet carrier (20), an oil inlet of the planet carrier oil inlet branch (21) is communicated with the lubricating oil pool, and an oil outlet of the planet carrier oil inlet branch (21) is communicated with an oil inlet of the pin shaft oil inlet branch (27).

6. A gearbox according to claim 3,

the planet wheel (30) is provided with a mounting hole in a penetrating mode, a bearing (50) is arranged in the mounting hole, and the bearing (50) is sleeved on the pin shaft (40).

7. A gearbox according to claim 6,

and a bearing lubricating branch (28) is arranged in the pin shaft (40), one end of the bearing lubricating branch (28) is communicated with the transition oil way, and the other end of the bearing lubricating branch is communicated with the mounting hole.

8. A gearbox according to claim 7,

the bearing lubrication branch (28) is in a plurality in number so as to realize multi-point lubrication on the bearing (50).

9. A gearbox according to any one of claims 1 to 8,

an oil inlet of the oil way is communicated with a main oil way of the gear box, and the main oil way is communicated with a lubricating oil pool in the box body.

10. A wind power plant characterized by comprising a gearbox according to any of claims 1-9.

Technical Field

The invention relates to the technical field of wind power generation equipment, in particular to a gear box and a wind power generation device.

Background

With the gradual deterioration of energy conditions, wind energy has been increasingly regarded as a renewable, pollution-free natural energy. The wind power generation device is a device capable of converting wind energy into electric energy, and the gear box is an essential component in the wind power generation device. A planetary gear mechanism is usually adopted in an existing gearbox as a transmission component, the planetary gear mechanism comprises a gear ring and a planetary wheel, and the planetary wheel is meshed with the gear ring.

In the existing gear box, because the meshing area of the planet wheel and the gear ring is not provided with a lubricating structure generally, the meshing tooth surface can be seriously worn and generate a large amount of heat during the meshing process of the planet wheel and the gear ring. When the meshing tooth surface is abraded, tiny metal particles can be generated and can fall into a lubricating oil pool of the gear box, so that the lubricating oil in the lubricating oil pool is polluted, and the cleanliness of the lubricating oil is reduced. The reduction of the cleanliness of the lubricating oil can seriously affect the lubricating effect of the lubricating oil on parts needing to be lubricated in the gear box and the service life of the parts needing to be lubricated. In addition, a large amount of heat generated in the meshing process of the planet gear and the gear ring is accumulated at the gear ring for a long time, so that severe rust on the tooth surface of the gear ring is generated, and the service life of the gear ring is seriously shortened.

Disclosure of Invention

One object of the present invention is to provide a gear box, which can lubricate the meshing area of a gear ring and a planet wheel, and has the advantages of good lubrication effect, high uniformity, and contribution to prolonging the service life of the gear box.

In order to achieve the purpose, the invention adopts the following technical scheme:

a gearbox, comprising:

a box body;

the planetary gear mechanism is arranged in the box body and comprises a gear ring, a planetary gear, a sun gear and a planet carrier, the gear ring is fixedly arranged on the box body, the planetary gear is simultaneously meshed with the gear ring and the sun gear, and the planet carrier is connected with the planetary gear through a pin shaft;

the lubricating mechanism comprises an oil path and an oil spraying pipe, the oil path is arranged inside the pin shaft and the planet carrier, an oil inlet of the oil path is communicated with a lubricating oil pool in the box body, an oil outlet of the oil path is communicated with the oil spraying pipe, an oil spraying port of the oil spraying pipe is right opposite to the meshing area of the gear ring and the planet gear, and the oil spraying pipe is configured to rotate synchronously with the planet carrier.

Preferably, the planet carrier includes two webs that the interval set up, two the webs are located the both sides of planet wheel, the oil circuit is including being located two first branch road and the second branch road of producing oil on the web respectively, the oil-out of first branch road and the second branch road of producing oil respectively is connected with one spout oil pipe, two spout oil pipe respectively just to the gear ring with the both ends setting in the meshing region of planet wheel.

Preferably, the oil path further comprises a transition oil path arranged on the pin shaft, the transition oil path comprises a first oil distributing branch and a second oil distributing branch, one end of the first oil distributing branch is communicated with the lubricating oil pool, the other end of the first oil distributing branch is communicated with the first oil outlet branch, one end of the second oil distributing branch is communicated with the lubricating oil pool, and the other end of the second oil distributing branch is communicated with the second oil outlet branch.

Preferably, the transition oil path further comprises a pin shaft oil inlet branch, an oil inlet of the pin shaft oil inlet branch is communicated with the lubricating oil pool, and an oil outlet of the pin shaft oil inlet branch is communicated with the first oil distribution branch and the second oil distribution branch simultaneously.

Preferably, a planet carrier oil inlet branch is further arranged on the planet carrier, an oil inlet of the planet carrier oil inlet branch is communicated with the lubricating oil pool, and an oil outlet of the planet carrier oil inlet branch is communicated with an oil inlet of the pin shaft oil inlet branch.

Preferably, the planet wheel is provided with a mounting hole in a penetrating manner, a bearing is arranged in the mounting hole, and the bearing is sleeved on the pin shaft.

Preferably, a bearing lubricating branch is arranged in the pin shaft, one end of the bearing lubricating branch is communicated with the transition oil way, and the other end of the bearing lubricating branch is communicated with the mounting hole.

Preferably, the bearing lubrication branch is provided with a plurality of branches, so as to realize multi-point lubrication on the bearing.

Preferably, an oil inlet of the oil path is communicated with a main oil path of the gearbox, and the main oil path is communicated with a lubricating oil pool in the box body.

Another object of the present invention is to provide a wind power generator, which has a good lubrication effect of the gear box, is not prone to malfunction, and has a long service life.

In order to achieve the purpose, the invention adopts the following technical scheme:

a wind power generation device comprises the gear box.

The invention has the beneficial effects that:

the invention provides a gear box, which can lead lubricating oil out of a lubricating oil pool of a gear box body by arranging a lubricating mechanism, and spray the lubricating oil in a meshing area of a gear ring and a planet wheel by using an oil spray pipe, thereby realizing the lubrication of the meshing tooth surface of the gear ring and the planet wheel, and further achieving the purposes of reducing the wear of the meshing tooth surface and taking away the heat generated by the meshing tooth surface. In addition, because the oil spout pipe can follow planet carrier synchronous revolution, consequently the oil spout pipe can lubricate the meshing region of ring gear and planet wheel all the time to realized lubricating evenly everywhere to whole ring gear, and then reduced the rusty probability of ring gear, improved the life of ring gear.

Drawings

FIG. 1 is a cross-sectional view of a gearbox provided by the present invention;

fig. 2 is a partially enlarged view of a portion a in fig. 1.

In the figure:

10. a ring gear; 20. a planet carrier; 30. a planet wheel; 40. a pin shaft; 50. a bearing; 60. an oil spray pipe; 70. a sun gear;

201. a web;

21. the planet carrier is provided with an oil inlet branch; 22. a first oil distribution branch; 23. a first oil outlet branch; 24. a transverse oil path; 25. a second oil distribution branch; 26. a second oil outlet branch; 27. the pin shaft is used for feeding oil into a branch; 28. and a bearing lubrication branch.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present embodiment provides a gearbox that can be configured as either a step-up gearbox or a reduction gearbox as desired. The gear box can be used on a wind power generation device or other devices, and has the advantages of good self-lubricating effect, difficulty in failure, long service life and the like. As shown in fig. 1, the gear box includes a case, a planetary gear mechanism, and a lubricating mechanism. The box body is a main supporting component and a main protecting component of the gear box, an accommodating space is arranged in the box body, and the planetary gear mechanism and the lubricating mechanism are arranged in the accommodating space.

The planetary gear mechanism is a main transmission component in the gear box and is mainly used for achieving the purposes of power transmission and target rotating speed output. As shown in fig. 1, the planetary gear mechanism includes a ring gear 10, a planetary gear 30, a sun gear 70, and a carrier 20. In the present embodiment, the ring gear 10 is fixedly disposed on the inner wall surface of the case, and is held stationary relative to the case. The sun gear 70 and the planet gears 30 are both located inside the ring gear 10, wherein the center of the sun gear 70 coincides with the center of the ring gear 10, and the sun gear 70 is rotatably connected inside the box body through a sun gear shaft (not shown). The planet gears 30 are located between the sun gear 70 and the ring gear 10, and the planet gears 30 are simultaneously in mesh with the sun gear 70 and the ring gear 10. In the present embodiment, the number of the planetary wheels 30 is not particularly limited, and may be, for example, three or more. When the number of the planetary gears 30 is plural, the plurality of planetary gears 30 are uniformly distributed in the circumferential direction of the sun gear 70. The planet carrier 20 is rotatably connected in the box and is rotatably connected with the planet wheel 30 through a pin 40. The planetary gear mechanism is prior art and the working principle thereof is not described herein.

The lubricating mechanism is mainly used for lubricating the meshing area of the gear ring 10 and the planet wheels 30, so that the wearing condition of the meshing tooth surface between the gear ring 10 and the planet wheels 30 is reduced, and a large amount of heat generated in the meshing process of the meshing tooth surface is taken away. In the present embodiment, as shown in fig. 1 and 2, the lubricating mechanism includes an oil path provided on the carrier 20 and the pin 40, and an oil jet pipe 60 provided at an oil outlet of the oil path. The oil circuit is used for communicating the lubricating oil pool and the oil spraying pipe 60, specifically, an oil inlet of the oil circuit is communicated with the lubricating oil pool in the box body, and an oil outlet of the oil circuit is communicated with the oil spraying pipe 60. The oil injection port of the oil injection pipe 60 is arranged right opposite to the meshing area of the ring gear 10 and the planetary gear 30, and is used for injecting lubricating oil to the meshing area of the ring gear 10 and the planetary gear 30.

In the present embodiment, since the end of the carrier 20 is closer to the meshing area of the ring gear 10 and the pinion 30, the oil jet pipe 60 is fixedly provided directly on the carrier 20 as shown in fig. 1. Alternatively, in order to improve the lubrication effect on the meshing area of the ring gear 10 and the planet gears 30, as shown in fig. 2, the planetary gear mechanism comprises two webs 201 which are arranged at intervals, and the two webs 201 are positioned on two sides of the planet gears 30, that is, the two webs 201 are positioned at two ends of the meshing area of the ring gear 10 and the planet gears 30. Each web 201 is provided with a respective oil jet 60 in order to simultaneously lubricate the meshing areas of the ring gear 10 and the planet gears 30 from both ends of the planet gears 30. Specifically, a mounting hole is formed in the planet wheel 30 in a penetrating manner, the pin shaft 40 is inserted into the mounting hole, and two ends of the pin shaft 40 are connected with the two webs 201 respectively.

In order to communicate the oil injection pipe 60 with the lubricating oil pool, as shown in fig. 2, the oil path includes a planet carrier oil inlet branch 21, a first oil outlet branch 23, a second oil outlet branch 26, which are arranged on the planet carrier 20, and a transition oil path arranged on the pin 40. Wherein, planet carrier oil feed branch 21 is used for realizing oil circuit and lubricating oil pond intercommunication, and the intercommunication here can be for utilizing the main oil circuit intercommunication among the oil pipe direct intercommunication or the original lubricating system of gear box. In order to avoid the winding of the oil pipe during the rotation of the planet carrier 20 and to simplify the internal structure of the gearbox, in the embodiment, the planet carrier oil inlet branch 21 is selected to be communicated with the main oil path.

Optionally, planet carrier oil feed branch 21 is the L type, and it includes the horizontal branch road of level setting and the vertical branch road of vertical setting. The transverse branch communicates with the main oil circuit and, optionally, coincides with the axis of rotation of the planet carrier 20 to ensure that the position of the transverse branch is unchanged and always communicates with the main oil circuit during rotation of the planet carrier 20. Or the main oil way is arranged on a component synchronously rotating with the planet carrier 20, so that the planet carrier oil inlet branch 21 is always communicated with the main oil way. The longitudinal branch is communicated with an oil inlet of the transition oil way. Certainly in other embodiments, also can not set up planet carrier oil feed branch 21, with the transition oil circuit through the pipeline directly with the lubricating oil pond intercommunication can, only need pay attention to this moment and avoid the pipeline to take place the winding.

The transition oil path is used for communicating the planet carrier oil inlet branch 21, the first oil outlet branch 23 and the second oil outlet branch 26. The first branch oil outlet passage 23 is provided in one of the carriers 20, and the second branch oil outlet passage 26 is provided in the other carrier 20. One end of the first oil outlet branch 23 is communicated with the transition oil path, the other end is communicated with one of the oil injection pipes 60, one end of the second oil outlet branch 26 is communicated with the transition oil path, and the other end is communicated with the other oil injection pipe 60.

Optionally, in this embodiment, as shown in fig. 2, the transition oil path includes a transverse oil path 24, a pin oil inlet branch 27, a first oil distribution branch 22, and a second oil distribution branch 25. The lateral oil passage 24 is provided along the axial direction of the pin 40. The pin shaft oil inlet branch 27 is located between the transverse oil path 24 and the planet carrier oil inlet branch 21 and is communicated in sequence. The first oil dividing branch 22 is located between the transverse oil path 24 and the first oil outlet branch 23, and is communicated in sequence. The second oil dividing branch 25 is located between the transverse oil path 24 and the second oil outlet branch 26, and is communicated in turn.

In this embodiment, as shown in fig. 2, the pin oil inlet branch 27, the first oil distribution branch 22, and the second oil distribution branch 25 are all linear, and are arranged in parallel to each other, and are all arranged perpendicular to the transverse oil path 24. The straight branches are convenient to manufacture, and the lubricating oil is not easy to block. Of course, in other embodiments, the shape and the connection relationship of each branch may also be changed according to the requirement, or the transverse oil path 24 is not provided according to the requirement, as long as the communication of the planet carrier oil inlet branch 21, the first oil outlet branch 23 and the second oil outlet branch 26 can be realized.

When the lubricating mechanism executes lubricating operation, firstly, lubricating oil enters a main oil way of an original lubricating system from a lubricating oil pool; then, the lubricating oil enters the planet carrier oil inlet branch 21 from the main oil way; subsequently, the lubricating oil enters the pin shaft oil inlet branch 27 of the pin shaft 40 through the planet carrier oil inlet branch 21 and is divided into the first oil distribution branch 22 and the second oil distribution branch 25; finally, two lubricating oils respectively enter the two oil injection pipes 60 through the first oil outlet branch 23 and the second oil outlet branch 26 to lubricate the meshing area of the ring gear 10 and the planet gear 30 from two sides of the meshing area of the ring gear 10 and the planet gear 30.

Optionally, as shown in fig. 2, a bearing 50 is disposed in the mounting hole, and the bearing 50 is sleeved on the pin shaft 40. In order to simplify a lubricating system in the gearbox and synchronously realize the lubrication of the bearing 50 and the meshing area of the gear ring 10 and the planet wheel 30, a bearing lubricating branch 28 is further arranged on the pin shaft 40, one end of the bearing lubricating branch 28 is communicated with a transition oil way, and the other end of the bearing lubricating branch 28 is communicated with a mounting hole. Specifically, the bearing lubrication branch 28 communicates with the lateral oil passage 24 at one end and communicates with the mounting hole at the other end. Alternatively, bearing lubrication branch 28 is straight and perpendicular to lateral oil path 24, and straight bearing lubrication branch 28 is easy to manufacture and not prone to clogging.

Further optionally, the number of the bearing lubrication branch 28 is plural, the plurality of bearing lubrication branch 28 are radially disposed along the circumference of the pin 40, one end of each bearing lubrication branch 28 is communicated with the transition oil path, and the other end is communicated with the mounting hole, so as to achieve multi-point lubrication of the bearing 50. In the present embodiment, two bearing lubrication branch passages 28 are provided, and the two bearing lubrication branch passages 28 are symmetrically disposed about the lateral oil passage 24.

In this embodiment, this gear box is through setting up lubricated mechanism, can draw forth lubricating oil from the lubricated oil bath of gear box, and utilize oil spout pipe 60 with lubricating oil injection in the meshing area of ring gear 10 and planet wheel 30, thereby realize the lubrication to the meshing flank of tooth of ring gear 10 and planet wheel 30, not only reached and reduced meshing flank of tooth wearing and tearing, reduce the probability that the little metal particle that produces because of wearing and tearing gets into lubricating oil, and improved the purpose of the cleanliness of lubricating oil, and can reach and take away the heat that the meshing flank of tooth produced, the purpose of each parts life in the gear box has been improved. Moreover, because the oil injection pipe 60 can synchronously rotate along with the planet carrier 20, the oil injection pipe 60 can always lubricate the meshing area of the gear ring 10 and the planet wheel 30, so that the whole gear ring 10 can be uniformly lubricated at each position, the rusting probability of the gear ring 10 is reduced, and the service life of the gear ring 10 is prolonged.

The embodiment also provides a wind power generation device comprising the gear box, and the gear box inside the wind power generation device is good in lubricating effect, not prone to failure and long in service life, so that the using effect of the wind power generation device is improved, and the maintenance cost is reduced.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.