Gear box with lubricated support bearing

Abstract

The present invention relates to the technical field of gearboxes, and discloses a gearbox for lubricating a support bearing, comprising: a first housing, on which a support bearing and an oil inlet are provided; a planet carrier, one end of which passes through the support bearing and the planet carrier and the first housing form a receiving chamber; an oil collecting box, which is arranged on the planet carrier and is provided with an oil collecting chamber and an oil outlet; an oil receiving pan, which is arranged on the first housing and is provided with a drainage groove; an end cover, which is arranged on the side of the first housing away from the receiving chamber, and is provided with a first guide groove, one end of the first guide groove is connected with the oil inlet, and the other end faces the support bearing. The gearbox for lubricating a support bearing disclosed in the present invention has a simple structure, the oil in the oil collecting box flows to the drainage groove through the oil outlet and flows along the drainage groove to the oil inlet of the first housing, thereby flowing to the support bearing along the first guide groove of the end cover, and the oil in the oil collecting box can provide oil for the support bearing in a no-load condition, thereby extending the service life of the gearbox for lubricating the support bearing.

Description

Technical Field

[0001] The invention relates to the technical field of gear boxes, and in particular to a gear box with a lubricating support bearing. Background Art

[0002] Bearings are important supporting parts for rotating bodies. In order to reduce internal friction and wear of bearings and extend their service life, bearings must be lubricated properly. At present, the lubrication method of the support bearings of the planetary carrier of the gearbox is mainly forced lubrication, that is, the bearings are lubricated by using an oil pump through relevant oil holes, supports and oil pipes. This lubrication method involves the transition fit between the support parts and the planetary carrier and the housing. The structure is complex and requires high processing accuracy. During use, when the oil pump or the support part fails, it will inevitably cause the support bearing to be in a non-lubricated working state, thereby affecting the service life of the gearbox. In addition, the wind power gearbox changes frequently between full load and no-load during operation. When it is in no-load condition, forced lubrication generally stops working, thereby accelerating the wear of the planetary carrier and the housing, further affecting the service life of the gearbox. Summary of the invention

[0003] Based on the above, the purpose of the present invention is to provide a gearbox with lubricated support bearings, which solves the problems of complex structure and high processing precision in the prior art, and at the same time can provide oil for the support bearings under no-load conditions, thereby extending the service life of the gearbox.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] 8. The axial displacement of the oil pump to the oil pumping station as claimed in claim 7, wherein the oil pumping station is located in the oil pumping station and the oil pumping station is connected with the gear train of the oil pumping station to form an oil pumping station with a plurality of oil pumping stations.

[0006] As a preferred solution for a gearbox for lubricating support bearings, the gearbox for lubricating support bearings also includes a second housing connected to the first housing, the second housing having an oil chamber, and the oil collecting box is provided with an oil inlet, so that when the oil collecting box rotates with the planetary carrier, the oil in the oil chamber can be poured into the oil collecting chamber through the oil inlet.

[0007] As a preferred solution for a gearbox for lubricating a support bearing, an oil return hole connected to the oil chamber is provided on the first box body, and a second guide groove is provided on the end cover, one end of the second guide groove faces the support bearing, and the other end is connected to the oil return hole.

[0008] As a preferred solution for a gearbox for lubricating a support bearing, the number of the oil return holes is at least two, and at least two of the oil return holes are distributed along the circumference of the first housing.

[0009] As a preferred solution for lubricating a gearbox supporting bearing, a connecting groove is provided on the oil collecting box, the connecting groove is connected to the oil outlet, and the depth of the connecting groove gradually increases in a radial direction toward the central axis of the planetary carrier.

[0010] As a preferred solution for a gearbox for lubricating a support bearing, the number of the oil inlet holes is at least two, and at least two of the oil inlet holes are distributed along the circumference of the first housing.

[0011] As a preferred solution for a gearbox with a lubricating support bearing, the oil receiving pan is an arc-shaped pan, the guide wall of the drainage groove is a curved wall, the distance between the guide wall and the central axis of the arc-shaped pan gradually decreases from the middle to both ends, the oil inlet hole is opposite to the end of the drainage groove, and the oil can flow along the guide wall to the oil inlet hole.

[0012] As a preferred solution for a gearbox with a lubricating support bearing, the oil receiving pan is a polygonal pan, the guide wall of the drainage groove is formed by connecting planes and / or curved surfaces, and the oil can flow along the guide wall to the oil inlet hole.

[0013] As a preferred solution for a gear box with a lubricating support bearing, the number of the oil receiving pans is at least two, and at least two of the oil receiving pans are arranged along the circumference of the first box body.

[0014] As a preferred solution for a gearbox with a lubricating support bearing, the oil receiving pan is fixed to the first housing by welding, bonding or fasteners.

[0015] The beneficial effects of the present invention are as follows: the gearbox for lubricating the support bearing disclosed in the present invention has a simple structure. Compared with the prior art, it eliminates structures such as an oil pump, a support member and an oil pipe. The added oil collecting box and an oil receiving pan have relatively low requirements for processing accuracy. Oil is stored in the oil collecting cavity of the oil collecting box. The oil flows through the oil outlet to the drainage groove on the oil receiving pan and flows along the drainage groove to the oil inlet hole of the first box body, and then flows along the first guide groove of the end cover to the support bearing. The oil in the oil collecting box can provide oil for the support bearing under no-load conditions, thereby reducing the wear between the planetary carrier and the first box body and extending the service life of the gearbox for lubricating the support bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0017] Figure 1 is a disassembled diagram of a gearbox for lubricating support bearings provided in a specific embodiment of the present invention;

[0018] Figure 2 yes Figure 1 Schematic diagram of the end cap in FIG.

[0019] Figure 3 is a schematic diagram of a gearbox with lubricated support bearings provided by a specific embodiment of the present invention without a planet carrier;

[0020] Figure 4 is a schematic diagram of an oil collecting box and a planet carrier provided in a specific embodiment of the present invention;

[0021] Figure 5 yes Figure 4 A local enlarged view at point A;

[0022] Figure 6 is a schematic diagram of an oil receiving pan provided in another embodiment of the present invention;

[0023] Figure 7 is a schematic diagram of another oil receiving pan provided in another embodiment of the present invention;

[0024] Figure 8 It is a schematic diagram of yet another oil receiving pan provided in other embodiments of the present invention.

[0025] In the figure:

[0026] 1. First box body; 101. Oil inlet hole; 102. Oil return hole; 103. First mounting hole; 11. Lifting lug;

[0027] 2. Support bearing;

[0028] 3. Planet carrier;

[0029] 4. Oil collecting box; 401. Oil outlet; 402. Connecting groove; 403. Oil inlet;

[0030] 5. Oil receiving pan; 501. drainage groove; 502. guide wall; 5021. first plane; 5022. first curved surface; 5023. second plane; 5024. third plane; 5025. second curved surface; 5026. fourth plane; 5027. third curved surface; 5028. fifth plane;

[0031] 6. End cover; 601. First guide groove; 602. Second guide groove. DETAILED DESCRIPTION

[0032] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below 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 those skilled in the art without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] like Figures 1 to 6As shown, the present embodiment provides a gearbox for lubricating a support bearing, comprising a first housing 1, a planetary carrier 3, an oil collecting box 4, an oil receiving pan 5 and an end cover 6, the first housing 1 being provided with a support bearing 2 and an oil inlet hole 101, one end of the planetary carrier 3 passes through the support bearing 2 and the planetary carrier 3 and the first housing 1 form a receiving chamber, the oil collecting box 4 is arranged on the planetary carrier 3 and is located in the receiving chamber, the oil collecting box 4 is provided with an oil collecting chamber and an oil outlet 401 connected to the oil collecting chamber, the oil receiving pan 5 is arranged on the first housing 1 and is located in the receiving chamber, a drainage groove 501 connected to the oil inlet hole 101 is provided on the side of the oil receiving pan 5 that is in contact with the first housing 1, the drainage groove 501 is opened along a side radially close to the oil collecting box 4 to receive the oil flowing out of the oil outlet 401, the oil in the present embodiment is lubricating oil, and the end cover 6 is arranged on the side of the first housing 1 away from the receiving chamber. A first guide groove 601 is provided on the end cover 6. One end of the first guide groove 601 is connected to the oil inlet hole 101, and the other end faces the support bearing 2. The end cover 6 can also play a role in axially sealing the support bearing 2 to prevent oil from leaking outward.

[0036] The gearbox for lubricating the support bearing provided in this embodiment has a simple structure. Compared with the prior art, structures such as an oil pump, a support member and an oil pipe are omitted. The added oil collecting box 4 and the oil receiving pan 5 have relatively low requirements for processing accuracy. The oil in the oil collecting box 4 flows to the drainage groove 501 through the oil outlet 401 and flows along the drainage groove 501 to the oil inlet hole 101 of the first housing 1, and then flows along the first guide groove 601 of the end cover 6 to the support bearing 2. The oil in the oil collecting box 4 can provide oil for the support bearing 2 under no-load conditions, thereby reducing the wear between the planetary carrier 3 and the first housing 1 and extending the service life of the gearbox for lubricating the support bearing.

[0037] The gearbox of the lubricating support bearing of the present embodiment further comprises a second housing (not shown in the figure), which is arranged on the first housing 1 and forms an oil cavity, the periphery of the accommodating cavity is openly arranged so that the accommodating cavity is connected with the oil cavity, the bottom of the oil cavity is provided with oil, and the oil collecting box 4 is provided with an oil inlet 403. When the oil collecting box 4 rotates with the planet carrier 3, the oil collecting box 4 will contact the oil at the bottom of the oil cavity, and the oil can be poured into the oil collecting cavity through the oil inlet 403. Specifically, Figure 1 As shown, the first box body 1 is provided with a first mounting hole 103, and the second box body is provided with a second mounting hole corresponding to the first mounting hole 103. The screws pass through the first mounting hole 103 and the second mounting hole and are fastened with nuts to fix the second box body on the first box body 1. Figure 1 As shown, the first housing 1 is further provided with a lifting lug 11 , and the lifting lug 11 is provided with a lifting hole, so that the gear box with the lubricated support bearing can be lifted through the lifting hole on the lifting lug 11 .

[0038] Specifically, the oil collecting box 4 of this embodiment moves along with the planet carrier 3. Figure 4The oil collecting box 4 rotates in the direction shown, and the oil inlet 403 on the oil collecting box 4 is located upstream along the rotation direction to ensure that the oil collecting box 4 can be filled with oil from the oil cavity when it rotates into the oil in the oil cavity.

[0039] like Figure 5 As shown, the number of the oil collecting boxes 4 in this embodiment is three, and each oil collecting box 4 is provided with a connecting groove 402, which is provided at one end of the oil collecting box 4 close to the oil inlet 403, and is connected to the oil outlet 401, and the depth of the connecting groove 402 gradually increases in the radial direction toward the central axis of the planet carrier 3, so that the oil flowing out of the oil outlet 401 flows in the radial direction close to the central axis of the planet carrier 3. Specifically, when the planet carrier 3 drives the oil collecting box 4 to rotate, the oil in the oil collecting chamber first flows to the connecting groove 402 through the oil outlet 401, and then the oil in the connecting groove 402 flows to the drainage groove 501 with the rotation of the planet carrier 3, thereby providing oil for the support bearing 2. In other embodiments, the number of the oil collecting boxes 4 can also be one, two or more than three, which is set according to actual needs.

[0040] In order to prevent the excessive oil in the support bearing 2 from flowing to the outside of the first housing 1 and the second housing, Figure 1 As shown, in this embodiment, an oil return hole 102 connected to the oil cavity is provided on the first housing 1, and a second guide groove 602 is provided on the end cover 6. One end of the second guide groove 602 faces the support bearing 2, and the other end is connected to the oil return hole 102. When there is too much oil, the oil can flow to the oil return hole 102 through the second guide groove 602, and flow back to the oil cavity from the oil return hole 102. In other embodiments, the number of the oil return holes 102 can also be at least two, and the at least two oil return holes 102 are distributed along the circumference of the first housing 1.

[0041] like Figure 6 As shown, the oil receiving pan 5 of this embodiment is an arc-shaped pan, and the oil receiving pan 5 is fixed on the first housing 1 by three fasteners, and the fasteners are screws, wherein two fasteners are located at both ends of the oil receiving pan 5, and one fastener is located in the middle of the oil receiving pan 5, so that the oil receiving pan 5 is firmly installed on the first housing 1. Figure 6 As shown, the guide wall 502 of the guide groove 501 is a curved wall, and the distance between the guide wall 502 and the central axis of the arc disk gradually decreases from the middle to the two ends, and the oil can flow to the oil inlet hole 101 along the guide wall 502. In this embodiment, the number of the oil inlet holes 101 is two, the number of the first guide grooves 601 is two, the oil inlet holes 101 and the first guide grooves 601 are arranged one by one, and the two oil inlet holes 101 are distributed along the circumference of the first housing 1, and the two oil inlet holes 101 are respectively opposite to the two ends of the guide groove 501.

[0042] In other embodiments, the oil receiving pan 5 can also be fixedly arranged on the first housing 1 by welding, bonding or other connection methods, which can be selected according to actual needs. The number of oil inlet holes 101 is not limited to two in this embodiment, and can also be one or more than three. The oil inlet hole 101 is generally located at a position close to the central axis of the drain groove 501 and the planet carrier 3. The number and specific position of the oil inlet hole 101 are selected according to actual needs.

[0043] As a replaceable embodiment, the oil receiving pan 5 is a polygonal pan, such as Figure 7 As shown, the oil receiving pan 5 is a quadrilateral pan, and the number of the oil receiving pans 5 is one. The guide wall 502 of the guide groove 501 of the quadrilateral pan is connected by a first plane 5021, a first curved surface 5022 and a second plane 5023. At this time, the oil inlet hole 101 on the first housing 1 is located near the end of the first plane 5021 of the guide groove 501 away from the first curved surface 5022 and near the end of the second plane 5023 away from the first curved surface 5022, so that the oil can flow from the guide wall 502 to the oil inlet hole 101.

[0044] As a replaceable implementation, Figure 8 As shown, the oil receiving pan 5 is a quadrilateral pan. Figure 8 The oil pan 5 in the Figure 7 The oil pan 5 in the middle is used to ensure that sufficient oil is provided to the support bearing 2. Figure 8 There are two oil receiving pans 5, which are arranged along the circumference of the first housing 1. The guide wall 502 of the guide groove 501 of the quadrilateral pan is formed by smoothly connecting the third plane 5024, the second curved surface 5025, the fourth plane 5026, the third curved surface 5027 and the fifth plane 5028 in sequence. At this time, the oil inlet hole 101 on the first housing 1 is located near the second curved surface 5025 of the guide groove 501, so that the oil can flow from the guide wall 502 to the oil inlet hole 101.

[0045] In other embodiments, the oil receiving pan 5 can also be in other shapes, and the guide wall 502 of the drainage groove 501 is formed by connecting a plane and / or a curved surface, and the oil can flow along the guide wall 502 of the drainage groove 501 to the oil inlet hole 101. The number of the oil receiving pan 5 can be one integrally formed structure as shown in this embodiment, or as shown in FIG. Figure 7 One of the integrally formed structures shown, or as Figure 8 The two structures shown in the figure, or the number of the oil receiving pans 5 is three or more, which is selected according to actual needs.

[0046] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A gearbox with a lubricated support bearing, characterized in that: include: A first housing (1), wherein the first housing (1) is provided with a support bearing (2) and an oil inlet hole (101); A planet carrier (3), one end of the planet carrier (3) passes through the support bearing (2) and the planet carrier (3) and the first housing (1) form a receiving cavity; An oil collecting box (4), the oil collecting box (4) being arranged on the planet carrier (3) and located in the accommodating cavity, the oil collecting box (4) being provided with an oil collecting cavity and an oil outlet (401) communicating with the oil collecting cavity; an oil receiving pan (5), the oil receiving pan (5) being arranged on the first housing (1) and located in the accommodating cavity, a side of the oil receiving pan (5) that is in contact with the first housing (1) being provided with a drainage groove (501) that is in communication with the oil inlet hole (101), the drainage groove (501) being opened along a side radially close to the oil collecting box (4) to receive the oil flowing out of the oil outlet (401); an end cover (6), the end cover (6) being arranged on a side of the first housing (1) away from the accommodating cavity, the end cover (6) being provided with a first guide groove (601), one end of the first guide groove (601) being connected to the oil inlet hole (101), and the other end of the first guide groove (601) being directly opposite to the support bearing (2); The gear box for lubricating the support bearing further comprises a second box connected to the first box (1), the second box having an oil chamber, the oil collecting box (4) being provided with an oil inlet (403), and when the oil collecting box (4) rotates with the planet carrier (3), the oil in the oil chamber can be poured into the oil collecting chamber through the oil inlet (403); The oil receiving pan (5) is an arc-shaped pan, the guide wall (502) of the guide groove (501) is a curved wall, the distance between the guide wall (502) and the central axis of the arc-shaped pan gradually decreases from the middle to both ends, the oil inlet hole (101) is directly opposite to the end of the guide groove (501), and the oil can flow along the guide wall (502) to the oil inlet hole (101); or The oil receiving pan (5) is a polygonal pan, and the guide wall (502) of the drainage groove (501) is formed by connecting planes and / or curved surfaces, and the oil can flow along the guide wall (502) to the oil inlet hole (101).

2. The gearbox with lubricated support bearing according to claim 1, characterized in that: The first housing (1) is provided with an oil return hole (102) connected to the oil chamber, and the end cover (6) is provided with a second guide groove (602), one end of the second guide groove (602) is directly opposite to the support bearing (2), and the other end is connected to the oil return hole (102).

3. The gearbox with lubricated support bearing according to claim 2, characterized in that: The number of the oil return holes (102) is at least two, and at least two of the oil return holes (102) are distributed along the circumference of the first casing (1).

4. The gearbox with lubricated support bearing according to claim 1, characterized in that: The oil collecting box (4) is provided with a connecting groove (402), the connecting groove (402) being connected to the oil outlet (401), and the depth of the connecting groove (402) gradually increases in a radial direction towards the central axis of the planet carrier (3).

5. The gearbox with lubricated support bearing according to claim 1, characterized in that: The number of the oil inlet holes (101) is at least two, and the at least two oil inlet holes (101) are distributed along the circumference of the first box body (1).

6. The gearbox with lubricated support bearing according to claim 1, characterized in that: The number of the oil receiving pans (5) is at least two, and at least two of the oil receiving pans (5) are arranged along the circumference of the first box body (1).

7. The gearbox with lubricated support bearing according to claim 1, characterized in that: The oil receiving pan (5) is fixedly arranged on the first box body (1) by welding, bonding or fasteners.

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