Protective dismounting tool for low-speed cone bearing of wind power gear box

Abstract

The utility model provides a protective dismounting tool for a low-speed cone bearing of a wind power gear box. The protective dismounting tool is characterized in that a connecting sleeve is sleeved outside the cone bearing; the lower end face of the connecting sleeve is placed on the upper end face of the pulling plate. The upper end surface of the pulling plate clings to the lower end surface of the inner ring of the conical bearing; the connecting screw rod penetrates through a through hole formed in the pulling plate and a through hole formed in the connecting sleeve, and the fastening nut is arranged on the connecting screw rod in a screwed mode and presses the upper end face of the connecting sleeve so as to fix the connecting sleeve and the pulling plate; the pressing plate is positioned above the conical bearing; the lower end face of the jack makes contact with the upper end face of the low-speed-level shaft system. The lower end face of the pressing plate makes contact with the upper end face of the jack. The connecting screw penetrates through a through hole formed in the pressing plate, the upper portion of the connecting screw is screwed into the connecting nut, and the connecting nut is pressed on the upper end face of the pressing plate. The device can effectively apply acting force to the end face of the bearing inner ring without damaging a bearing retainer and a roller.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine gearbox maintenance tooling, specifically a protective disassembly tooling for the low-speed stage tapered bearing of a wind turbine gearbox. Background Technology

[0002] Due to its advantages such as being pollution-free and having low construction costs, wind power generation has experienced rapid development in recent years.

[0003] In the aftermarket for wind turbine gearbox repair, a common problem is the difficulty in disassembling the tapered bearings on both sides of the low-speed stage. The main reasons are as follows: limited space for disassembly; easy separation between the bearing outer ring and the inner ring of the roller cage; and the inability to apply external force to the bearing rollers and cage, limiting the force to the inner ring, making it difficult to control the disassembly point. Previous solutions involved directly cutting the bearing, destructively removing the tapered bearings on both sides, making it impossible to reuse them and resulting in significant waste. This also damages the journals, reducing their strength. Utility Model Content

[0004] This utility model provides a protective disassembly tool for the low-speed stage tapered bearing of a wind turbine gearbox. Its purpose is to overcome the shortcomings of the prior art and can effectively apply force to the end face of the bearing inner ring without damaging the bearing cage and rollers.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A protective disassembly fixture for the low-speed stage tapered bearing of a wind turbine gearbox, characterized in that:

[0007] The connecting sleeve is fitted outside the tapered bearing;

[0008] The lower end face of the connecting sleeve rests on the upper end face of the pull plate;

[0009] The upper end face of the pull plate is pressed against the lower end face of the inner ring of the tapered bearing;

[0010] The connecting screw passes through the through hole in the pull plate and the through hole in the connecting sleeve. The set nut is screwed onto the connecting screw and presses against the upper end face of the connecting sleeve, thereby fixing the connecting sleeve and the pull plate.

[0011] The pressure plate is located above the tapered bearing;

[0012] The lower end face of the jack contacts the upper end face of the low-speed stage shaft system, and the lower end face of the pressure plate contacts the upper end face of the jack.

[0013] The connecting screw passes through the through hole in the pressure plate, and a connecting nut is screwed into the upper part of the connecting screw, pressing the connecting nut against the upper end face of the pressure plate.

[0014] The pull plate consists of two semi-circular pull plates, which are joined together to form a ring plate. The ring plate has four through holes evenly distributed around its circumference.

[0015] The inner diameter of the annular plate is equal to the shaft diameter adjacent to the tapered bearing on the low-speed stage shaft system.

[0016] There are two jacks, which are placed symmetrically with respect to the axis of the low-speed stage shaft system.

[0017] The advantages of this utility model are:

[0018] The fixture is assembled using two semi-circular pull plates and a connecting sleeve, with a connecting screw connecting the pressure plate. This allows the jack to apply force to the inner ring end face of the bearing, achieving the purpose of protectively removing the tapered bearing. The tooling structure is simple, the required materials are readily available, and assembly and fabrication are straightforward. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a cross-sectional view of the tooling of this utility model;

[0021] Figure 2 This is a view of the pull plate. Detailed Implementation

[0022] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort. To facilitate understanding of this utility model, a more detailed description of this utility model will be provided below in conjunction with the accompanying drawings and specific embodiments.

[0023] It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "bottom," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] like Figure 1 , Figure 2 As shown:

[0025] This utility model is a protective disassembly tool for the low-speed stage tapered bearing of a wind turbine gearbox.

[0026] Tooling usage process:

[0027] 1. The low-speed stage shaft system is horizontally positioned (10 units).

[0028] 2. The entire annular plate is cut into two semi-annular pull plates, namely the first pull plate 5 and the second pull plate 9. The inner diameter of the annular plate is equal to the shaft diameter D of the low-speed stage shaft system 10 adjacent to the tapered bearing 8. The first pull plate 5 and the second pull plate 9 are each provided with two through holes 100. When the first pull plate 5 and the second pull plate 9 are assembled into an annular plate, the four through holes 100 are evenly distributed around the circumference. The first pull plate 5 and the second pull plate 9 are located on both sides of the journal of the low-speed stage shaft system 10. The upper end face of the first pull plate 5 and the second pull plate 9 is close to the lower end face of the inner ring 81 of the tapered bearing 8.

[0029] 3. From bottom to top, four connecting screws 3 pass through four through holes 100 on the first pull plate 5 and the second pull plate 9 respectively;

[0030] 4. The inner diameter of the cylindrical connecting sleeve 4 is larger than the outer diameter of the tapered bearing 8. The connecting sleeve 4 is fitted over the tapered bearing 8. The lower end face of the connecting sleeve 4 is placed on the upper end face of the first pull plate 5 and the second pull plate 9. The connecting sleeve 4 has four circumferentially distributed through holes 41. The four through holes 41 pass through four connecting screws 3 respectively. Four set nuts 7 are screwed onto the four connecting screws 3 respectively and press the upper end face of the connecting sleeve 4. In this way, the connecting sleeve 4 and the first pull plate 5 and the second pull plate 9 are fixed.

[0031] 5. Two jacks 2 are placed symmetrically with respect to the axis of the low-speed stage shaft system 10. The lower end faces of the two jacks 2 are in horizontal contact with the upper end face of the low-speed stage shaft system 10, and the lower end face of the pressure plate 1 is in horizontal contact with the upper end face of the jacks 2. Four connecting screws 3 pass through four circumferentially distributed through holes 11 opened on the pressure plate 1.

[0032] 6. Screw the upper parts of the four connecting screws 3 into the connecting nuts 6 respectively. The connecting nuts 6 press against the upper end face of the pressure plate 1. Tighten the connecting nuts 6 so that the upper end faces of the first pull plate 5 and the second pull plate 9 are close to the lower end face of the inner ring 81 of the tapered bearing 8.

[0033] 7. After clamping, jack 2 slowly lifts pressure plate 1 upwards, causing first pull plate 5 and second pull plate 9 to push the tapered bearing 8 upwards, thus completing the protective removal of tapered shaft 8.

[0034] This utility model tooling has a simple structure, the required materials are readily available, and assembly is simple. It enables the reuse of tapered bearings, greatly reducing costs.

[0035] The various embodiments described in this specification are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above description of the disclosed embodiments enables those skilled in the art to implement or use this invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this invention. Therefore, this invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A protective disassembly fixture for the low-speed stage tapered bearing of a wind turbine gearbox, characterized in that: The connecting sleeve is fitted over the tapered bearing; the lower end face of the connecting sleeve rests on the upper end face of the pull plate; the upper end face of the pull plate is pressed against the lower end face of the inner ring of the tapered bearing; the connecting screw passes through the through hole in the pull plate and the through hole in the connecting sleeve, and the set nut is screwed onto the connecting screw, pressing against the upper end face of the connecting sleeve to fix the connecting sleeve and the pull plate; the pressure plate is located above the tapered bearing; the lower end face of the jack contacts the upper end face of the low-speed stage shaft system, and the lower end face of the pressure plate contacts the upper end face of the jack; the connecting screw passes through the through hole in the pressure plate, and the connecting nut is screwed into the upper part of the connecting screw, pressing the connecting nut against the upper end face of the pressure plate.

2. The protective disassembly fixture for the low-speed stage tapered bearing of a wind turbine gearbox as described in claim 1, characterized in that: The pull plate consists of two semi-circular pull plates, which are joined together to form a ring plate. The ring plate has four through holes evenly distributed around its circumference.

3. The protective disassembly fixture for the low-speed stage tapered bearing of a wind turbine gearbox as described in claim 2, characterized in that: The inner diameter of the annular plate is equal to the shaft diameter adjacent to the tapered bearing on the low-speed stage shaft system.

4. The protective disassembly fixture for the low-speed stage tapered bearing of a wind turbine gearbox as described in claim 1, characterized in that: There are two jacks, which are placed symmetrically with respect to the axis of the low-speed stage shaft system.

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