Bearing lubricating structure of wind power gear box

Abstract

The utility model relates to a bearing lubricating structure of a wind power gear box. According to the technical scheme, a main shaft is arranged in the gearbox, the right end of the main shaft is fixedly sleeved with one end of a magnetic coupling, the magnetic coupling comprises an inner rotor, the periphery of a box shell outside the inner rotor is movably sleeved with an outer rotor, a rotating shaft is fixedly inserted into the right end of the outer rotor, and the rotating shaft is fixedly arranged on a rack in a sleeving mode through a bearing. The rear end of the infusion pump is fixedly installed on the machine frame, an oil discharge outlet in the upper portion of the right end of the infusion pump is connected with a liquid injection pipe in a sealed mode, the left end of the liquid injection pipe is communicated with a lubricating pipe opening in the gearbox, an oil inlet in the lower portion of the left end of the infusion pump is communicated with an oil storage tank on the lower portion through a pipeline, and the oil storage tank is installed on the machine frame. The shaft seal has the advantages that magnetic transmission is achieved, an external power source is not needed, energy is saved, meanwhile, the problem of leakage of a traditional shaft seal is solved, the rotating speed of the infusion pump is synchronous with the main shaft, and lubricating flow is automatically adjusted along with changes of loads of a gearbox.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of wind power gear box bearing lubrication technology relates to a kind of wind power gear box bearing lubrication structure. BACKGROUND

[0002] Gear box in wind turbine is an important mechanical component, its main function is to transmit the power generated by wind wheel under the action of wind to generator and make it get corresponding rotating speed, usually the rotating speed of wind wheel is very low, far from the rotating speed required for generator to generate electricity, must be realized through the speed increasing effect of gear box gear pair, so gear box is also called speed increasing box, most of wind power gear box is suitable for the area where natural wind is strong, can be subjected to considerable external force to wind power gear box bearing, improve rotating speed. The existing gear box bearing lubrication structure, most need external power source, pump body is driven to send lubricating oil into gear box, lubrication is carried out, simultaneously, need to change lubricating flow according to torque indirect feedback, some lubrication structures are built-in in gear box, and maintenance cost is higher.

[0003] Therefore, the utility model provides a kind of wind power gear box bearing lubrication structure, solve above problems. UTILITY MODEL CONTENTS

[0004] In view of the problems existing in the prior art, the utility model discloses a kind of wind power gear box bearing lubrication structure, the technical scheme adopted is, including gear box, the main shaft is built-in in the gear box, the lower end of the gear box is fixedly connected installation base, the right end of the main shaft is fixedly sleeved with the one end of magnetic coupling, the magnetic coupling includes inner rotor, the outer rotor is movably sleeved with the outer rotor of the box shell outside the inner rotor, the right end of the outer rotor is fixedly inserted into the rotating shaft, the rotating shaft is fixedly sleeved on the rack by bearing, the right end of the rotating shaft is fixedly connected with the rotating shaft of liquid pump, the rear end of the liquid pump is fixedly installed on the rack, the oil outlet of the right end upper portion of the liquid pump is sealedly connected with injection pipe, the left end of the injection pipe is communicated with the lubricating pipe opening on the gear box, the oil inlet of the left end lower portion of the liquid pump is communicated with the lower portion oil tank by pipeline, the oil tank is installed on the rack.

[0005] As a preferred scheme of the utility model, the top of the gear box is provided with lubricating pipe joint.

[0006] As a preferred scheme of the utility model, the inner diameter of the outer rotor is 2-5mm larger than the outer diameter of the box shell outside the inner rotor;Such design, when the outer rotor rotates under the magnetic force of the inner rotor, avoid the friction between the outer rotor and the box shell support outside the inner rotor, improve the stability of long-term operation.

[0007] As a preferred scheme of the utility model, the rack comprises a first support with an upper end fixedly sleeved on the rotating shaft and a second support with an upper end fixedly sleeved on the right end of the liquid pumping pump, and lower ends of the first support and the second support are fixedly installed on the front and rear ends of the bottom plate.

[0008] As a preferred scheme of the utility model, four corners of the bottom plate are respectively provided with mounting holes and are fixedly connected with the base.

[0009] As a preferred scheme of the utility model, a sealing cover is arranged at the top right front corner of the oil storage tank, and a constant pressure valve is arranged at the top right rear corner of the oil storage tank; the sealing cover is arranged to facilitate the addition of lubricating oil into the oil storage tank, and the constant pressure valve is arranged to facilitate the stabilization of the pressure in the oil storage tank, thereby ensuring the stable operation of the liquid pumping pump.

[0010] The utility model discloses the beneficial effect: through the inner rotor of magnetic coupling of fixedly sleeving magnetic force connecting shaft ware at the main shaft end of gear box, cooperate the outer rotor of sleeving on the gear box shell, through magnetic drive, drive the outside liquid pumping pump and send lubricating oil to the lubricating port on the gear box, lubricate the bearing and related mechanical structure in it, need not additional power source, energy -conserving, at the same time, magnetic drive does not need mechanical seal, solve the problem of traditional shaft seal leakage, especially suitable for high pollution sensitive wind power electric gear box, simultaneously, the rotating speed of liquid pumping pump is synchronous with the main shaft, and lubricating flow realizes automatic regulation along with the change of gear box load, in addition, the outside liquid pumping pump can be independently detached, need not to disassemble gear box main part, reduce maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is whole structure schematic diagram of the utility model;

[0012] Fig. 2 It is magnetic force connecting shaft ware and main shaft and rotating shaft assembly section view of the utility model;

[0013] Fig. 3 It is rack and oil storage tank installation schematic view of the utility model.

[0014] In the drawing: 1-gear box, 2-magnetic force connecting shaft ware, 3-rotating shaft, 4-rack, 5-liquid pumping pump, 6-liquid injection pipe, 7-oil storage tank, 11-main shaft, 12-base, 13-lubricating pipe joint, 21-inner rotor, 22-outer rotor, 41-first support, 42-second support, 43-bottom plate, 71-sealing cover, 72-constant pressure valve. DETAILED DESCRIPTION

[0015] Example 1

[0016] As Figs. 1 to 3The utility model discloses a kind of wind power gear box bearing lubrication structures, adopt the technical scheme, including gear box 1, the main shaft 11 of built-in gear box 1, the lower end fixed mounting base 12 of gear box 1, the top of gear box 1 is equipped with lubricating pipe joint 13, the right end of main shaft 11 is fixedly sleeved with one end of magnetic coupling 2, the magnetic coupling 2 includes inner rotor 21, the outer rotor 22 of the peripheral movable sleeve of the box shell outside inner rotor 21, the inner diameter of outer rotor 22 is greater than the outer diameter of the box shell outside inner rotor 21 2-5mm, the right end of outer rotor 22 is fixedly inserted into rotating shaft 3, rotating shaft 3 is fixedly sleeved on the first support 41 of rack 4 by bearing, the right end of rotating shaft 3 is fixedly connected with the rotating shaft of liquid pump 5, liquid pump 5 adopts screw pump, the rear end of liquid pump 5 is fixedly installed on the second support 42 of rack 4, the oil outlet of the right end upper portion of liquid pump 5 is sealedly connected with injection pipe 6, the left end of injection pipe 6 is sealedly communicated with the lubricating pipe joint 13 on gear box 1, the oil inlet of the left end lower portion of liquid pump 5 is communicated with lower portion oil tank 7 by pipeline, oil tank 7 is installed on the bottom plate 43 of rack 4, the lower end of first support 41, second support 42 is fixedly installed at the front and rear ends of bottom plate 43, four corners of bottom plate 43 are respectively equipped with mounting hole 431 and are fixedly connected with base 12, the top right front corner of oil tank 7 is equipped with sealing cover 71, the top right rear corner of oil tank 7 is installed constant pressure valve 72.

[0017] The utility model discloses a kind of wind power gear box bearing lubrication structures, adopt the technical scheme, including gear box 1, the main shaft 11 of built-in gear box 1, the lower end fixed mounting base 12 of gear box 1, the top of gear box 1 is equipped with lubricating pipe joint 13, the right end of main shaft 11 is fixedly sleeved with one end of magnetic coupling 2, the magnetic coupling 2 includes inner rotor 21, the outer rotor 22 of the peripheral movable sleeve of the box shell outside inner rotor 21, the inner diameter of outer rotor 22 is greater than the outer diameter of the box shell outside inner rotor 21 2-5mm, the right end of outer rotor 22 is fixedly inserted into rotating shaft 3, rotating shaft 3 is fixedly sleeved on the first support 41 of rack 4 by bearing, the right end of rotating shaft 3 is fixedly connected with the rotating shaft of liquid pump 5, liquid pump 5 adopts screw pump, the rear end of liquid pump 5 is fixedly installed on the second support 42 of rack 4, the oil outlet of the right end upper portion of liquid pump 5 is sealedly connected with injection pipe 6, the left end of injection pipe 6 is sealedly communicated with the lubricating pipe joint 13 on gear box 1, the oil inlet of the left end lower portion of liquid pump 5 is communicated with lower portion oil tank 7 by pipeline, oil tank 7 is installed on the bottom plate 43 of rack 4, the lower end of first support 41, second support 42 is fixedly installed at the front and rear ends of bottom plate 43, four corners of bottom plate 43 are respectively equipped with mounting hole 431 and are fixedly connected with base 12, the top right front corner of oil tank 7 is equipped with sealing cover 71, the top right rear corner of oil tank 7 is installed constant pressure valve 72.

[0018] The electrical connection mode or structure not described in detail in the present document is prior art.

[0019] Although the specific embodiments of the utility model have been described in detail above, the utility model is not limited to the above-mentioned embodiments, within the knowledge range possessed by those skilled in the art, various changes can be made without departing from the purpose of the utility model, and modification or deformation without creative labor is still within the protection scope of the utility model.

Claims

1. A wind turbine gearbox bearing lubrication structure, comprising a gearbox (1), a main shaft (11) is built-in in the gearbox (1), a base (12) is fixedly installed at the lower end of the gearbox (1), characterized in that: The right end of the main shaft (11) is fixedly sleeved with one end of a magnetic coupling (2), the magnetic coupling (2) comprises an inner rotor (21), an outer rotor (22) is movably sleeved on the outer periphery of the box shell outside the inner rotor (21), the right end of the outer rotor (22) is fixedly inserted with a rotating shaft (3), the rotating shaft (3) is fixedly sleeved on a rack (4) through a bearing, the right end of the rotating shaft (3) is fixedly connected with a rotating shaft of a liquid pump (5), the rear end of the liquid pump (5) is fixedly installed on the rack (4), the oil outlet on the right end upper portion of the liquid pump (5) is sealingly connected with a liquid injection pipe (6), the left end of the liquid injection pipe (6) is communicated with a lubricating pipe opening on the gear box (1), the oil inlet on the left end lower portion of the liquid pump (5) is communicated with a lower oil storage tank (7) through a pipeline, and the oil storage tank (7) is installed on the rack (4).

2. A wind turbine gearbox bearing lubrication arrangement according to claim 1, characterised in that: A lubricating pipe joint (13) is formed on the top of the gear box (1).

3. A wind turbine gearbox bearing lubrication arrangement according to claim 1, characterised in that: The inner diameter of the outer rotor (22) is 2-5mm larger than the outer diameter of the box shell outside the inner rotor (21).

4. A wind turbine gearbox bearing lubrication arrangement according to claim 1, characterised in that: The rack (4) comprises a first support (41) fixedly sleeved on the rotating shaft (3) through a bearing at the upper end and a second support (42) fixedly sleeved on the right end of the liquid pump (5) at the upper end, and the lower ends of the first support (41) and the second support (42) are fixedly installed on the front and rear ends of a bottom plate (43).

5. A wind turbine gearbox bearing lubrication arrangement according to claim 4, characterised in that: Mounting holes (431) are formed on the four corners of the bottom plate (43) and fixedly connected with the base (12).

6. A wind turbine gearbox bearing lubrication arrangement according to claim 1, characterised in that: A sealing cover (71) is formed on the top right front corner of the oil storage tank (7), and a constant pressure valve (72) is installed on the top right rear corner of the oil storage tank (7).

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