Fan gear box lubricating device

Abstract

The utility model discloses a fan gear box lubricating device, and relates to the technical field of wind turbine gear boxes. The device comprises a gear box body, a gear set is arranged in the gear box body, and a reciprocating lead screw is rotationally connected into the gear box body; an acting gear is fixedly sleeved on the reciprocating screw rod; the acting gear is meshed with the gear set; a sliding rod is arranged above the reciprocating screw rod in parallel; the sliding rod is fixed with the gear box body; the sliding rod is slidably sleeved with an acting block. The acting block is in corresponding threaded connection with the reciprocating screw rod; a lubricating liquid brushing mechanism is arranged in the gear box body; the lubricating liquid brushing mechanism comprises a liquid guide cylinder fixed in the gear box body and a liquid storage shell fixed at the top of the gear box body; a piston is hermetically and slidably connected into the liquid guide cylinder; the sliding direction of the piston is parallel to the moving direction of the acting block. The lubricating device has the beneficial effects that the lubricating device is suitable for lubricating liquid with different viscosities, the use limitation is small, and the lubricating uniformity is good.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine gearboxes, in particular to a lubricating device for a wind turbine gearbox. Background Art

[0002] The gearbox is an important mechanical component widely used in wind power generation units. Its main function is to transmit the power generated by the wind wheel under the action of wind force to the generator and make it obtain the corresponding rotational speed. In order to ensure the service life and smooth operation, the gear set in the gearbox needs to be lubricated.

[0003] The existing lubricating devices usually adopt the spraying method to inject lubricating fluid into the gear set. However, this method is usually only suitable for lubricating fluids with relatively low viscosity. For lubricating fluids with relatively high viscosity, this method is not suitable, resulting in limitations in the application range. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a lubricating device for a wind turbine gearbox, which is suitable for lubricating fluids with different viscosities, has small use limitations, and good lubrication uniformity, aiming at the above-mentioned technical deficiencies.

[0005] The technical solution adopted by the utility model is as follows: A lubricating device for a wind turbine gearbox is provided, which includes a gearbox body. A gear set is arranged inside the gearbox body. A reciprocating lead screw is rotatably connected inside the gearbox body. A driving gear is sleeved and fixed on the reciprocating lead screw. The driving gear meshes with the gear set. A sliding rod is arranged parallel above the reciprocating lead screw. The sliding rod is fixed to the gearbox body. A driving block is slidably sleeved on the sliding rod. The driving block is threadedly connected to the reciprocating lead screw correspondingly. A lubricating fluid brushing mechanism is arranged inside the gearbox body.

[0006] The lubricating fluid brushing mechanism includes a liquid guide cylinder fixed inside the gearbox body and a liquid storage shell fixed on the top of the gearbox body. A piston is hermetically and slidably connected inside the liquid guide cylinder. The sliding direction of the piston is parallel to the moving direction of the driving block. The driving block is fixedly connected to the piston through a connecting rod. The two ends of the liquid guide cylinder are respectively communicated with a liquid suction pipe and a liquid discharge pipe. A liquid inlet check valve is installed on the liquid suction pipe. A liquid discharge check valve is installed on the liquid discharge pipe. The liquid suction pipe extends into the bottom of the gearbox body. The liquid discharge pipe is communicated with the liquid storage shell. Leakage holes are evenly opened at the lower end of the liquid storage shell. Brush hairs are inserted and fixed in the leakage holes. The lower ends of the brush hairs are in frictional contact with the gear set.

[0007] To further optimize the technical solution, the diameter of the brush hairs of a lubricating device for a wind turbine gearbox is smaller than the diameter of the leakage holes; one side of the upper part of the brush hairs is fixed to the leakage holes, and the other side is separated from the leakage holes.

[0008] To further optimize this technical solution, a receiving box is fixed inside the gear box body of a fan gear box lubrication device; the receiving box is correspondingly located below the gear set; the liquid suction pipe is communicated with the receiving box.

[0009] To further optimize this technical solution, the bottom end inside the receiving box of a fan gear box lubrication device is of a conical structure with high sides and low middle; the liquid suction pipe is communicated with the middle of the bottom end inside the receiving box.

[0010] The beneficial effects of the present utility model are as follows:

[0011] 1. Through the meshing of the driving gear and the gear set, the reciprocating lead screw can be driven to rotate, and the rotation of the reciprocating lead screw can drive the driving block to reciprocate along the sliding rod; the sliding direction of the piston is parallel to the moving direction of the driving block, the driving block is fixedly connected with the piston through a connecting rod, and the reciprocating movement of the driving block can drive the piston to reciprocate in the liquid guide cylinder, realizing the reciprocating suction and injection effects on the liquid guide cylinder; the two ends of the liquid guide cylinder are respectively communicated with a liquid suction pipe and a liquid discharge pipe, a liquid inlet check valve is installed on the liquid suction pipe, and a liquid discharge check valve is installed on the liquid discharge pipe. The reciprocating movement of the piston can enable the liquid guide cylinder to suck in the lubricating liquid through the liquid suction pipe and discharge the lubricating liquid through the liquid discharge pipe.

[0012] 2. The liquid discharge pipe is communicated with the liquid storage shell, leakage holes are evenly opened at the lower end of the liquid storage shell, brush hairs are inserted and fixed in the leakage holes, the lower ends of the brush hairs are in frictional contact with the gear set, the lubricating liquid can be discharged into the liquid storage shell through the liquid discharge pipe, leak out to the brush hairs through the leakage holes, and the brush hairs can brush the lubricating liquid onto the gear set. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a structural schematic diagram of the present utility model;

[0014] Figure 2 is a partial structural schematic diagram of the lubricating liquid brushing mechanism;

[0015] Figure 3 is a planar structural schematic diagram at the position of the brush hairs.

[0016] In the figure, 1. Gear box body; 2. Gear set; 3. Reciprocating lead screw; 4. Driving gear; 5. Sliding rod; 6. Driving block; 7. Liquid guide cylinder; 8. Liquid storage shell; 9. Piston; 10. Liquid suction pipe; 11. Liquid discharge pipe; 12. Liquid inlet check valve; 13. Liquid discharge check valve; 14. Leakage hole; 15. Brush hair; 16. Receiving box; 17. Connecting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0018] As Figure 1As shown in the figure, a lubrication device for a fan gearbox includes a gearbox body 1. Inside the gearbox body 1, there is a gear set 2. A reciprocating lead screw 3 is rotatably connected inside the gearbox body 1. A driving gear 4 is sleeved and fixed on the reciprocating lead screw 3. The driving gear 4 meshes with the gear set 2. Above the reciprocating lead screw 3, a slide bar 5 is arranged in parallel. The slide bar 5 is fixed to the gearbox body 1. A sliding block 6 is slidably sleeved on the slide bar 5. The sliding block 6 is correspondingly threadedly connected to the reciprocating lead screw 3. A lubricating liquid brushing mechanism is arranged inside the gearbox body 1.

[0019] As Figure 2 shown, the lubricating liquid brushing mechanism includes a liquid guiding cylinder 7 fixed inside the gearbox body 1 and a liquid storage shell 8 fixed on the top of the gearbox body 1. A piston 9 is hermetically and slidably connected inside the liquid guiding cylinder 7. The sliding direction of the piston 9 is parallel to the moving direction of the sliding block 6. The sliding block 6 is fixedly connected to the piston 9 through a connecting rod 17. The two ends of the liquid guiding cylinder 7 are respectively communicated with a liquid suction pipe 10 and a liquid discharge pipe 11. A liquid inlet check valve 12 is installed on the liquid suction pipe 10. A liquid discharge check valve 13 is installed on the liquid discharge pipe 11. The liquid suction pipe 10 extends into the bottom of the gearbox body 1. The liquid discharge pipe 11 is communicated with the liquid storage shell 8. Leakage holes 14 are evenly opened at the lower end of the liquid storage shell 8. Brush hairs 15 are inserted and fixed in the leakage holes 14. The lower ends of the brush hairs 15 are in frictional contact with the gear set 2.

[0020] When the gear set 2 is running, it will drive the driving gear 4 to rotate, drive the reciprocating lead screw 3 to rotate, and the sliding block 6 can reciprocate along the direction of the slide bar 5, and then drive the piston 9 to reciprocate and suck and inject in the liquid guiding cylinder 7 through the connecting rod 17. When the piston 9 sucks, the lubricating liquid in the gearbox body 1 can enter the liquid guiding cylinder 7 through the liquid suction pipe 10. When the piston 9 injects, the lubricating liquid in the liquid guiding cylinder 7 can be injected into the liquid storage shell 8 through the liquid discharge pipe 11, and then be brushed onto the gear set 2 through the brush hairs 15. Through the above process, the continuous lubrication effect on the gear set 2 can be achieved when the gear set 2 is working.

[0021] Due to the setting of the liquid discharge check valve 13 on the liquid discharge pipe 11, the liquid discharge pipe 11 will only inject lubricating liquid into the liquid storage shell 8 and will not draw it out in the reverse direction. Therefore, even if the viscosity of the lubricating liquid is relatively high and the lubricating liquid in the liquid storage shell 8 cannot flow out smoothly at the beginning, but with the continuous injection of lubricating liquid into the liquid storage shell 8, the lubricating liquid in the liquid storage shell 8 is gradually filled. When it is filled and then injected again, the lubricating liquid can ensure to drain from the leakage holes 14. Therefore, this technical solution is suitable for lubricating liquids with different viscosities and has little use limitation.

[0022] In addition, when the lubricating liquid falls from the leakage holes 14, it will flow down along the brush hairs 15, and the brush hairs 15 will adhere to the lubricating liquid. In this way, when the gear set 2 is running and the brush hairs 15 are in frictional contact with the gear set 2, the lubricating liquid will be brushed onto the gear set 2. Through this brushing method, the lubricating liquid can be more evenly distributed and more firmly adhered to the gear set 2, ensuring the reliability of the lubrication effect.

[0023] As Figure 3 shown, the diameter of the bristles 15 is smaller than the diameter of the liquid leakage hole 14; one side of the upper part of the bristles 15 is fixed to the liquid leakage hole 14, and the other side is separated from the liquid leakage hole 14, ensuring that there is enough space between the liquid leakage hole 14 and the bristles 15 for the lubricating liquid to fall.

[0024] As Figure 1 shown, a receiving box 16 is fixed inside the gear box body 1; the receiving box 16 is correspondingly located below the gear set 2; the liquid suction pipe 10 is communicated with the receiving box 16, and the lubricating liquid dripping from the gear set 2 is received by the receiving box 16, which can improve the efficiency when the liquid suction pipe 10 sucks the liquid, and the falling lubricating liquid does not contact the other parts inside the gear box body 1, reducing pollution.

[0025] As Figure 2 shown, the bottom end inside the receiving box 16 is a conical structure with high sides and low middle; the liquid suction pipe 10 is communicated with the middle part of the bottom end inside the receiving box 16, which is convenient for the collection of the lubricating liquid and more convenient for suction, and reduces the residue of the lubricating liquid in the receiving box 16 during suction.

[0026] It can be understood that the present utility model is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. In addition, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A fan gearbox lubrication device, comprising a gearbox body (1), wherein a gear set (2) is arranged inside the gearbox body (1), and characterized in that: A reciprocating screw rod (3) is rotatably connected inside the gear box (1); an action gear (4) is sleeved and fixed on the reciprocating screw rod (3); the action gear (4) is meshed with the gear set (2); a sliding rod (5) is arranged parallel to the top of the reciprocating screw rod (3); the sliding rod (5) is fixed to the gear box (1); an action block (6) is slidably sleeved on the sliding rod (5); the action block (6) is correspondingly threadedly connected to the reciprocating screw rod (3); a lubricating liquid brushing mechanism is arranged inside the gear box (1); The lubricating liquid brushing mechanism comprises a liquid guide tube (7) fixed inside the gear housing (1) and a liquid storage shell (8) fixed on the top of the gear housing (1); a piston (9) is sealed and slidably connected inside the liquid guide tube (7); the sliding direction of the piston (9) is parallel to the moving direction of the action block (6); the action block (6) is fixedly connected to the piston (9) through a connecting rod (17); the ends of the liquid guide tube (7) are respectively connected to a liquid extraction pipe (10) and a liquid discharge pipe (11). a liquid inlet check valve (12) is installed on the liquid extraction pipe (10); a liquid discharge check valve (13) is installed on the liquid discharge pipe (11); the liquid extraction pipe (10) extends into the bottom of the gear housing (1); the liquid discharge pipe (11) is connected to the liquid storage shell (8); liquid leakage holes (14) are evenly opened at the lower end of the liquid storage shell (8); brushes (15) are inserted and fixed in the liquid leakage holes (14); the lower ends of the brushes (15) are in friction contact with the gear set (2).

2. A fan gearbox lubrication device according to claim 1, characterized in that: The diameter of the bristles (15) is smaller than the diameter of the liquid leakage hole (14); one side of the upper part of the bristles (15) is fixed to the liquid leakage hole (14), and the other side is separated from the liquid leakage hole (14).

3. A fan gearbox lubrication device according to claim 1, characterized in that: A receiving box (16) is fixed inside the gear housing (1); the receiving box (16) is located correspondingly below the gear set (2); and the liquid extraction tube (10) is in communication with the receiving box (16).

4. A fan gearbox lubrication device according to claim 3, characterized in that: The bottom end of the receiving box (16) is a conical structure with high sides and low middle. The liquid extraction tube (10) is connected to the middle of the bottom end of the receiving box (16).

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