Wind power gear box pin shaft dismounting tool

Abstract

The utility model relates to a wind power gear box pin shaft dismounting tool. An oil groove is formed in the outer side face of a pin shaft, and a first oil injection pipeline communicated with the outer side face of the pin shaft is arranged at the end, away from a pin shaft mounting hole, of the pin shaft. A first through hole is formed in the bottom of the pin shaft mounting hole; the disassembling tool comprises a drawing assembly installed over the pin shaft and used for pulling out the pin shaft; the first oil injection pipe is communicated with the first oil injection pipeline and is used for injecting hydraulic oil, so that the hydraulic oil enters the matching surface of the pin shaft and the planet carrier, and the required disassembling force is reduced; the sealing assembly is installed on the side, away from the pin shaft, of the first through hole, and the lower end face of the sealing assembly and the lower end face of the pin shaft abut against the upper end and the lower end of the first through hole respectively to form a closed cavity; and the second oil injection pipe is arranged on the sealing assembly and communicates with the closed cavity, hydraulic oil is injected through the second oil injection pipe, and then upward disassembling force is generated on the end face of the pin shaft. Compared with the prior art, the pin shaft disassembling tool is more convenient for disassembling the large-interference-magnitude pin shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power gear boxes, in particular to a wind power gear box pin shaft disassembly tool. Background Art

[0002] The gearbox in a wind turbine generator is an important mechanical component. Its main function is to transfer the power generated by the wind rotor to the generator and make it rotate at a corresponding speed. When the planetary gear assembly of the wind turbine gearbox fails, the pin shaft needs to be removed from the planetary gear. Since the inner ring of the planetary gear bearing is in interference connection with the outer circle of the pin shaft, it is very difficult to disassemble.

[0003] Currently, the planetary gear pins are mostly disassembled by directly boring out the pins or pressing them out with a press. During the pressing process, the pins are damaged due to uneven force. When the pins are pressed out with a press, the entire planetary assembly is subjected to force at one point, which can easily overturn the planetary assembly, posing a great risk. Utility Model Content

[0004] The purpose of the utility model is to provide a wind power gear box pin shaft disassembly tool in order to overcome at least one of the defects in the above-mentioned prior art.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A wind turbine gearbox pin shaft disassembly tool, the wind turbine gearbox comprises a planetary carrier and a pin shaft arranged in a pin shaft mounting hole of the planetary carrier,

[0007] The outer side surface of the pin shaft is provided with an oil groove, and the end of the pin shaft away from the pin shaft mounting hole is provided with a first oil injection pipeline connected to the outer side surface of the pin shaft;

[0008] A first through hole is provided at the bottom of the pin shaft mounting hole;

[0009] The disassembly tool comprises:

[0010] A pulling assembly installed just above the pin shaft, used to pull out the pin shaft;

[0011] The first oil injection pipe connected to the first oil injection pipeline is used to inject hydraulic oil so that the hydraulic oil enters the matching surface of the pin shaft and the planetary carrier to reduce the required disassembly force, that is, the static friction between the pin shaft and the planetary carrier is reduced in this way, thereby reducing the required disassembly force

[0012] A sealing component is installed on the side of the first through hole away from the pin shaft, and the sealing component and the lower end surface of the pin shaft are respectively abutted against the lower and upper ends of the first through hole to form a closed cavity;

[0013] The second oil injection pipe arranged on the sealing assembly is connected with the closed cavity. Hydraulic oil is injected through the second oil injection pipe, thereby generating an upward disassembly force on the end face of the pin shaft.

[0014] Furthermore, the pulling assembly comprises:

[0015] A connecting block fixed to the upper end surface of the pin;

[0016] A screw fixedly connected to the upper end surface of the connection block;

[0017] The support frame, the hydraulic cylinder and the fixing nut on the screw rod are sequentially inserted, and the support frame is fixed on the upper end surface of the planetary frame.

[0018] Furthermore, at least two locking bolts for locking the pin and the connecting block are provided between the pin and the connecting block.

[0019] Preferably, the locking bolts are M10X20, which has almost no effect on the strength of the pin; there are five locking bolts.

[0020] Furthermore, the connecting block is provided with a second through hole for the first oil filling pipe to pass through, and the first oil filling pipe is connected with the first oil filling pipeline through the second through hole.

[0021] Furthermore, the sealing assembly includes a sealing pressure plate, which is installed on a side of the first through hole away from the pin shaft; the second oil filling pipe passes through the sealing pressure plate and extends into the closed cavity.

[0022] Furthermore, a sealing ring is provided on the sealing pressure plate and the first through hole on a side away from the pin shaft.

[0023] Furthermore, the sealing assembly includes a sealing screw plug installed on a side of the first through hole away from the pin shaft; the second oil filling pipe passes through the sealing screw plug and extends into the closed cavity.

[0024] Furthermore, a third oil circuit is provided at one end of the pin shaft that abuts against the bottom wall of the first through hole; and a blocking piece is provided at the entrance of the third oil circuit toward the bottom wall of the first through hole for blocking during the disassembly process.

[0025] Compared with the prior art, the utility model has the following advantages:

[0026] (1) The utility model provides a wind turbine gearbox pin disassembly tool, which provides a huge interference disassembly force through hydraulic oil in the confined space between the pin and the planetary carrier, so as to facilitate the disassembly of a pin with a large interference. Specifically, the utility model injects hydraulic oil through a first oil injection pipe, so that the hydraulic oil enters the mating surface of the pin and the planetary carrier, thereby reducing the required disassembly force; then injects hydraulic oil through a second oil injection pipe, thereby generating an upward disassembly force on the end face of the pin, and finally, pulls out the pin through a pulling assembly.

[0027] (2) The utility model provides a wind turbine gearbox pin shaft disassembly tool, the oil pumping device has a simple structure and is easy to assemble to the planetary carrier.

[0028] (3) The utility model provides a wind turbine gearbox pin disassembly tool, which has little impact on the strength of existing products. When disassembly is required, 5 additional threaded holes are drilled, which has almost no impact on the strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a front view of the wind turbine gearbox pin disassembly tool in Example 1;

[0030] Figure 2 It is a cross-sectional view of the wind turbine gearbox pin disassembly tool in Example 1;

[0031] Figure 3 for Figure 2 An enlarged view of a partial view;

[0032] Figure 4 This is a front view of the wind power gearbox pin disassembly tool in Example 2;

[0033] Figure 5 It is a cross-sectional view of the wind turbine gearbox pin disassembly tool in Example 2;

[0034] Figure 6 for Figure 5 An enlarged view of a partial view;

[0035] As shown in the figure, the numbers are as follows: 1-screw; 2-hydraulic cylinder; 3-support horizontal plate; 4-support vertical plate; 5-locking bolt; 6-connecting block; 7-first oil filling pipe; 8-sealing ring; 9-sealing pressure plate; 10-sealing screw plug; 11-second oil filling pipe; 12-planetary carrier; 13-pin shaft; 14-first oil filling pipeline; 15-first through hole; 16-fixing nut; 17-sealing piece. DETAILED DESCRIPTION

[0036] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0037] Example 1

[0038] See also Figure 1-3 A wind power gearbox pin disassembly tool, the wind power gearbox comprises a planetary carrier 12, and a pin 13 arranged in a pin installation hole of the planetary carrier 12,

[0039] The outer side surface of the pin shaft 13 is provided with an oil groove, and one end of the pin shaft 13 away from the pin shaft mounting hole is provided with a first oil injection pipeline 14 connected to the outer side surface of the pin shaft 13;

[0040] A first through hole 15 is provided at the bottom of the pin shaft mounting hole;

[0041] The disassembly tool comprises:

[0042] A pulling assembly installed just above the pin shaft 13, used to pull out the pin shaft 13;

[0043] The first oil injection pipe 7 connected to the first oil injection pipeline 14 is used to inject hydraulic oil so that the hydraulic oil enters the matching surface of the pin shaft 13 and the planetary carrier 12 to reduce the required disassembly force, that is, the static friction between the pin shaft and the planetary carrier 12 is reduced in this way, thereby reducing the required disassembly force

[0044] A sealing component is installed on the side of the first through hole 15 away from the pin 13, and the sealing component and the lower end surface of the pin 13 are respectively abutted against the lower and upper ends of the first through hole 15 to form a closed cavity;

[0045] The second oil injection pipe 11 provided on the sealing assembly is communicated with the closed cavity. Hydraulic oil is injected through the second oil injection pipe 11 , thereby generating an upward disassembly force on the end surface of the pin shaft 13 .

[0046] Please refer to Figure 1 , 2 In this embodiment, the pulling assembly includes: a connecting block 6 fixed to the upper end surface of the pin 13; a screw 1 fixedly connected to the upper end surface of the connecting block 6; a support frame, a hydraulic cylinder 2 and a fixing nut 16 which are sequentially inserted into the screw 1, and the support frame is fixed to the upper end surface of the planetary frame 12. The support frame includes a supporting horizontal plate 3 and two supporting vertical plates 4 vertically connected to the supporting horizontal plate 3. The supporting vertical plates 4 are installed on the planetary frame 12, and the upper end surface of the supporting horizontal plate 3 is used to fix the hydraulic cylinder 2.

[0047] Please refer to Figure 1 In this embodiment, at least two locking bolts 5 are provided between the pin shaft 13 and the connecting block 6 for locking the two. Preferably, there are five locking bolts 5, and they are M10X20, which has almost no effect on the strength of the pin shaft 13.

[0048] Please refer to Figure 2 In this embodiment, the connecting block 6 is provided with a second through hole for the first oil filling pipe 7 to pass through, and the first oil filling pipe 7 is connected to the first oil filling pipeline 14 through the second through hole.

[0049] Please refer to Figure 2 , 3In this embodiment, the sealing assembly includes a sealing plate 9, which is installed on the side of the first through hole 15 away from the pin 13; the second oil injection pipe 11 passes through the sealing plate 9 and extends into the closed cavity. The sealing plate 9 and the side of the first through hole 15 away from the pin 13 are provided with a sealing ring 8.

[0050] In the prior art, the pin shaft 13 of the gearbox is assembled with a large interference fit. When the gearbox fails, the planetary stage of the gearbox needs to be disassembled to remove the pin shaft 13. At this time, due to the large interference fit, a huge disassembly force is required. When the planetary carrier 12 itself has a qualified strength, the disassembly tool provided by the utility model provides a larger additional disassembly force than the original direct pulling method, and the gearbox pin shaft 13 can be effectively removed.

[0051] Example 2

[0052] See also Figure 4-6 This embodiment is basically the same as the embodiment 1, except that the sealing assembly in this embodiment includes a sealing screw plug 10 installed on the side of the first through hole 15 away from the pin 13; the second oil filling pipe 11 passes through the sealing screw plug 10 and extends into the closed cavity.

[0053] In this embodiment, a third oil circuit is provided at one end of the pin shaft 13 that abuts against the bottom wall of the first through hole 15; and a blocking member is provided at the entrance of the third oil circuit toward the bottom wall of the first through hole 15 for blocking during the disassembly process.

[0054] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A wind turbine gearbox pin disassembly tool, the wind turbine gearbox comprising a planet carrier (12), and a pin (13) arranged in a pin installation hole of the planet carrier (12), characterized in that: An oil groove is provided on the outer side of the pin shaft (13); and a first oil injection pipeline (14) is provided at one end of the pin shaft (13) away from the pin shaft mounting hole and connected to the outer side of the pin shaft (13); A first through hole (15) is provided at the bottom of the pin shaft mounting hole; The disassembly tool comprises: A pulling assembly installed just above the pin shaft (13) and used for pulling out the pin shaft (13); A first oil injection pipe (7) connected to the first oil injection pipeline (14) is used to inject hydraulic oil so that the hydraulic oil enters the mating surface of the pin shaft (13) and the planet carrier (12), thereby reducing the required disassembly force; A sealing component is installed on the side of the first through hole (15) away from the pin shaft (13), wherein the sealing component and the lower end surface of the pin shaft (13) are respectively in contact with the lower and upper ends of the first through hole (15) to form a closed cavity; A second oil injection pipe (11) provided on the sealing component is connected to the closed cavity, and hydraulic oil is injected through the second oil injection pipe (11), thereby generating an upward disassembly force on the end surface of the pin shaft (13).

2. A wind turbine gearbox pin disassembly tool according to claim 1, characterized in that: The pulling assembly comprises: A connecting block (6) fixed to the upper end surface of the pin shaft (13); A screw rod (1) fixedly connected to the upper end surface of the connecting block (6); The support frame, the hydraulic cylinder (2) and the fixing nut (16) are sequentially inserted onto the screw rod (1), and the support frame is fixed to the upper end surface of the planetary frame (12).

3. A wind turbine gearbox pin disassembly tool according to claim 2, characterized in that: At least two locking bolts (5) for locking the pin shaft (13) and the connecting block (6) are arranged between the pin shaft (13) and the connecting block (6).

4. A wind turbine gearbox pin disassembly tool according to claim 3, characterized in that: The locking bolt (5) is M10X20.

5. The wind turbine gearbox pin disassembly tool according to claim 3, characterized in that: There are five locking bolts (5).

6. A wind turbine gearbox pin disassembly tool according to claim 2, characterized in that: The connecting block (6) is provided with a second through hole for facilitating the passage of the first oil injection pipe (7), and the first oil injection pipe (7) is connected to the first oil injection pipeline (14) through the second through hole.

7. The wind turbine gearbox pin disassembly tool according to claim 1, characterized in that: The sealing assembly comprises a sealing pressure plate (9), and the sealing pressure plate (9) is installed on the side of the first through hole (15) away from the pin shaft (13); the second oil injection pipe (11) passes through the sealing pressure plate (9) and extends into the closed cavity.

8. The wind turbine gearbox pin disassembly tool according to claim 7, characterized in that: A sealing ring (8) is provided on the sealing pressure plate (9) and the first through hole (15) at a side away from the pin shaft (13).

9. The wind turbine gearbox pin disassembly tool according to claim 1, characterized in that: The sealing assembly comprises a sealing screw plug (10) installed on a side of the first through hole (15) away from the pin shaft (13); the second oil injection pipe (11) passes through the sealing screw plug (10) and extends into the closed cavity.

10. The wind turbine gearbox pin disassembly tool according to claim 1, characterized in that: A third oil circuit is provided at one end of the pin shaft (13) that abuts against the bottom wall of the first through hole (15); and a blocking piece (17) is provided at the entrance of the third oil circuit toward the bottom wall of the first through hole (15) for blocking during the disassembly process.

Images