CN209925579U

CN209925579U - Oil leakage prevention device for low-speed end of gear box

Info

Publication number: CN209925579U
Application number: CN201920807607.9U
Authority: CN
Inventors: 刘效飞; 白月成; 王进; 徐梓良; 赵国祥
Original assignee: Luneng New Energy (group) Co Ltd Hebei Branch
Current assignee: Luneng New Energy (group) Co Ltd Hebei Branch
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-01-10
Anticipated expiration: 2029-05-31

Abstract

The utility model discloses a gear box low-speed end oil leakage prevention device, including the outer protecting box body, still include the ladder hollow pin, the ladder hollow pin is located the inboard of outer protecting box body, the ladder hollow pin includes inner tube cover and outer pipe sleeve, the inner tube cover is located the inboard of outer pipe sleeve, the inboard of outer pipe sleeve is seted up screw hole one, the surface of inner tube cover is seted up screw hole two with the corresponding position department of screw hole one, and the inboard of screw hole one and screw hole two is installed fixing bolt, one side surface of inner tube cover is seted up fixed screw, the cover is equipped with rubber seal circle between the outside of inner tube cover and the outer pipe sleeve; the oil supply structure of the bearing at the low-speed end is optimized by design and installation, the original cylindrical pin is modified into the stepped hollow pin, partial oil inlet holes are blocked, the oil quantity entering the wind direction of the first-stage planet carrier is reduced, the actual oil quantity after calculation and modification is 2.82L/min, and the pressure of excessive oil quantity on sealing is avoided.

Description

Oil leakage prevention device for low-speed end of gear box

Technical Field

The utility model belongs to the technical field of wind power generation, concretely relates to gear box low-speed end leak protection oil device.

Background

The gear box has the following functions: acceleration and deceleration, which is a commonly-known speed change gear box; changing the transmission direction, for example, two sector gears can vertically transmit force to the other rotating shaft; the turning moment is changed. Under the condition of the same power, the faster the gear rotates, the smaller the moment borne by the shaft, and vice versa.

The existing 3MW gearbox has the problem of oil leakage at the low-speed end all the time, platform gear oil is often accumulated, fire safety hazards exist, on-site inspection finds that the lubricating oil quantity of a wind direction bearing on a first-stage planet carrier is too much and the oil return is not timely, because the load of the wind direction bearing on the first-stage planet carrier is small, the heat productivity in the operation process is small, the lubricating oil at the position is mainly used for lubricating, heat dissipation is not achieved, the oil requirement is not large, and the actual required lubricating oil quantity at the position is 1.01L/min through calculation. The application software models the whole lubricating system, and the problem that lubricating oil flows out from the gap between the shaft and the low-speed end cover is found to be caused by the fact that the lubricating oil amount in the original scheme is 4.44L/min which is 4 times of the actual required amount, so that the oil leakage prevention device for the low-speed end of the gearbox is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gear box low-speed end leak protection oil device to it has the oil leak problem always to propose current 3MW gear box low-speed end in the above-mentioned background art to solve, often causes platform gear oil to store up, has conflagration potential safety hazard, and the on-the-spot inspection discovers that wind direction bearing lubricating oil volume is too much on the one-level planet carrier, and the oil return is untimely, causes the problem that lubricating oil from the axle and low-speed end cap clearance department flow.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a gear box low-speed end leak protection oil device, includes the outer protecting box body, still includes the hollow round pin of ladder, the hollow round pin of ladder is located the inboard of outer protecting box body, the hollow round pin of ladder includes interior pipe box and outer pipe box, interior pipe box is located the inboard of outer pipe box, threaded hole one is seted up to the inboard of outer pipe box, threaded hole two is seted up to the surface of interior pipe box and the corresponding position department of threaded hole one, just fixing bolt is installed to the inboard of threaded hole one and threaded hole two, fixed screw thread has been seted up to one side surface of interior pipe box, the cover is equipped with rubber seal between the outside of interior pipe box and the outer pipe box.

Preferably, an oil inlet hole is formed in the inner side of the outer protective box body and located at the bottom of the tail end of the inner pipe sleeve.

Preferably, the minimum inner diameter of the inner jacket tube is equal to 15mm and the maximum outer diameter of the end of the inner jacket tube is equal to 17 mm.

Preferably, the maximum outer diameter of the outer jacket is equal to 25mm, and the minimum outer diameter of the outer jacket is equal to 22 mm.

Preferably, the inner surface of the outer pipe sleeve is provided with threads.

Compared with the prior art, the beneficial effects of the utility model are that: the oil supply structure of the bearing at the low-speed end is optimized by design and installation, the form that the original cylindrical hollow pin is modified into the stepped hollow pin is adopted, partial oil inlet holes are blocked, the air quantity entering the primary planet carrier is reduced, the actual lubricating oil quantity after calculation and modification is 2.82L/min, which is twice of the oil quantity required actually, the pressure brought to sealing by excessive oil quantity is avoided, the problem that lubricating oil flows out from the gap of the low-speed end cover can be effectively solved, the cylindrical hollow pin is designed into a split structure, the subsequent maintenance of the cylindrical hollow pin is facilitated, the partial parts of the stepped hollow pin can be replaced according to different internal and external wear conditions, meanwhile, the adjustment of the area for shielding the oil inlet holes can be realized by replacing inner pipe sleeves with different external diameters, and the quantity of the lubricating oil is further controlled.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

FIG. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a cross-sectional view of the outer jacket of the present invention;

fig. 3 is a schematic diagram of the explosion structure of the stepped pipeline of the present invention;

in the figure: 1. an outer protecting box body; 2. an inner pipe sleeve; 3. an oil inlet hole; 4. an outer pipe sleeve; 5. a first threaded hole; 6. fixing the bolt; 7. a rubber seal ring; 8. fixing threads; 9. and a second threaded hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-3, the present invention provides a technical solution: a low-speed end oil leakage prevention device of a gear box comprises an outer protection box body 1, wherein the inner side of the outer protection box body 1 is positioned at the bottom of the tail end of an inner pipe sleeve 2 and is provided with an oil inlet hole 3, the inner side of the outer protection box body 1 also comprises a step hollow pin, the step hollow pin is positioned at the inner side of the outer protection box body 1 and comprises an inner pipe sleeve 2 and an outer pipe sleeve 4, the inner pipe sleeve 2 is positioned at the inner side of the outer pipe sleeve 4, the inner side of the outer pipe sleeve 4 is provided with a threaded hole I5, the outer surface of the inner pipe sleeve 2 is provided with a threaded hole II 9 at the position corresponding to the threaded hole I5, the inner sides of the threaded hole I5 and the threaded hole II 9 are provided with a fixing bolt 6, the outer surface of one side of the inner pipe sleeve 2 is provided with a fixing thread 8, the inner surface of the outer pipe sleeve 4, the minimum inner diameter of the inner pipe sleeve 2 is equal to 15mm, the maximum outer diameter of the end part of the inner pipe sleeve 2 is equal to 17mm, the maximum outer diameter of the outer pipe sleeve 4 is equal to 25mm, and the minimum outer diameter of the outer pipe sleeve 4 is equal to 22mm, so that the stepped hollow pin can replace a cylindrical hollow pin, and the operation of the gear box is not influenced.

The utility model discloses a theory of operation and use flow: when the mechanism is used, the end part of the inner pipe sleeve 2 on one side of the stepped hollow pin blocks part of the oil inlet holes 3 from the oil inlet holes 3, the amount of oil entering the wind direction on the first-level planet carrier can be reduced, the actual lubricating oil amount after calculation and modification is 2.82L/min, the actual use requirement is met, the pressure brought to sealing by excessive oil amount is avoided, the problem that lubricating oil flows out from the gap of the low-speed end cover can be effectively solved, meanwhile, the outer pipe sleeve 4 and the fixed thread 8 are fixedly connected through the fixed thread 8 and the fixed bolt 6 and can replace part of parts of the stepped hollow pin according to different internal and external wear conditions, meanwhile, the area of shielding the oil inlet holes 3 can be adjusted by replacing the inner pipe sleeves 2 with different outer diameters, and the lubricating oil amount is further controlled.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a gear box low-speed end leak protection oil device, protects box (1) its characterized in that including outer: the novel anti-theft device is characterized by further comprising a stepped hollow pin, wherein the stepped hollow pin is located on the inner side of the outer protection box body (1), the stepped hollow pin comprises an inner pipe sleeve (2) and an outer pipe sleeve (4), the inner pipe sleeve (2) is located on the inner side of the outer pipe sleeve (4), a first threaded hole (5) is formed in the inner side of the outer pipe sleeve (4), a second threaded hole (9) is formed in the position, corresponding to the first threaded hole (5), of the outer surface of the inner pipe sleeve (2), a fixing bolt (6) is installed on the inner sides of the first threaded hole (5) and the second threaded hole (9), a fixing thread (8) is formed in the outer surface of one side of the inner pipe sleeve (2), and a rubber sealing ring (7) is sleeved between.

2. The oil leakage preventing device for the low-speed end of the gearbox as claimed in claim 1, wherein: and an oil inlet hole (3) is formed in the inner side of the outer protective box body (1) and is positioned at the bottom of the tail end of the inner pipe sleeve (2).

3. The oil leakage preventing device for the low-speed end of the gearbox as claimed in claim 1, wherein: the minimum inner diameter of the inner pipe sleeve (2) is equal to 15mm, and the maximum outer diameter of the end part of the inner pipe sleeve (2) is equal to 17 mm.

4. The oil leakage preventing device for the low-speed end of the gearbox as claimed in claim 1, wherein: the maximum outer diameter of the outer sleeve (4) is equal to 25mm, and the minimum outer diameter of the outer sleeve (4) is equal to 22 mm.

5. The oil leakage preventing device for the low-speed end of the gearbox as claimed in claim 1, wherein: the inner surface of the outer pipe sleeve (4) is provided with threads.