Tool for disassembling positioning pin of box body of wind power gear box

Abstract

The utility model provides a tool for disassembling a positioning pin of a box body of a wind power gear box, the positioning pin penetrates through a box body and a corresponding pin hole of the box body to position the box body and the box body, and the tool is characterized in that the head part of the positioning pin is provided with an internal thread hole; the tool screw rod is matched and screwed into an internal threaded hole in the head part of the positioning pin; the diameter of a central through hole of the lower tool sleeve is larger than that of the tool screw and larger than that of the positioning pin, the tool screw penetrates through the central through hole of the lower tool sleeve, and the lower end face of the lower tool sleeve makes contact with the flange face of the lower box body. The diameter of a central through hole of the upper tool sleeve is larger than that of the tool screw, the tool screw penetrates through the central through hole of the upper tool sleeve, and the lower end face of the upper tool sleeve makes contact with the lower tool sleeve. The locking nut is arranged on the threads of the tool screw in a threaded and matched mode, and the locking nut makes contact with the upper tool sleeve. The utility model provides a tool which is low in cost, strong in universality and safer.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine gearbox processing tooling, specifically a tooling for disassembling the positioning pins of a wind turbine gearbox. Background Technology

[0002] Wind power generation has experienced rapid development in recent years due to its advantages such as being pollution-free and having low construction costs. The gearbox is a key component of a wind turbine generator set, and its assembly efficiency and disassembly / reassembly efficiency during maintenance are crucial. The gearbox mainly consists of large components such as the housing, gears, torque arms, and planetary carriers, as well as various smaller structural and steel parts. As a protective and supporting component of the gear assembly, the gearbox plays a vital role. When a wind turbine gearbox needs to be taken off the rack for maintenance, it must be disassembled. The gearbox housing is connected and fixed by bolts and locating pins. While bolts are relatively easy to remove during disassembly, locating pins are more difficult. Locating pins usually have an interference fit with the pin holes on the housing, making their removal time-consuming and labor-intensive. Sometimes, due to structural interference within the housing, conventional removal methods cannot be used.

[0003] The existing technical solution is as follows:

[0004] Use a jack and tooling to remove the locating pin. Use the jack to support the tooling installed in the threaded hole of the locating pin, and then remove the locating pin from the housing.

[0005] The disadvantages of existing technology 1 are:

[0006] 1. It is not very versatile. The method of using jacks and tools to remove positioning pins can only be used in places where positioning pins are installed on the box. There must be open space and enough space to place the jacks and tools. If there is not enough space, this tool cannot be used for removal.

[0007] 2. The jack has a large force. If the pin hole is deformed, using the jack and tooling to forcibly remove it can easily cause the pin hole of the box to crack.

[0008] 3. The tooling used with the jack has a more complex structure and a higher manufacturing cost. Utility Model Content

[0009] This utility model provides a tooling for disassembling the positioning pins of a wind turbine gearbox, the purpose of which is to overcome the shortcomings of the prior art and provide a tooling that is low in cost, highly versatile, and safer.

[0010] The technical solution adopted by this utility model to solve its technical problem is:

[0011] A fixture for disassembling positioning pins of wind turbine gearbox housings, wherein the positioning pins pass through corresponding pin holes in the housing to position the housing, characterized in that:

[0012] The head of the locating pin has an internal threaded hole;

[0013] The tooling screw is screwed into the internal thread hole of the locating pin head;

[0014] The diameter of the central through hole of the lower tooling sleeve is larger than the diameter of the tooling screw and larger than the diameter of the locating pin. The central through hole of the lower tooling sleeve passes through the tooling screw, and the lower end face of the lower tooling sleeve contacts the flange face of the lower housing.

[0015] The diameter of the central through hole of the upper tooling sleeve is larger than the diameter of the tooling screw. The central through hole of the upper tooling sleeve passes through the tooling screw, and the lower end face of the upper tooling sleeve contacts the lower tooling sleeve.

[0016] The locking nut is screwed onto the thread of the tooling screw, and the locking nut contacts the upper tooling sleeve.

[0017] The threaded portion of the tooling screw is tightened to the bottom of the internal threaded hole of the locating pin head.

[0018] Both the lower and upper tooling sleeves are cylindrical.

[0019] The length of the central through hole of the lower tooling sleeve is greater than the length of the locating pin.

[0020] The center hole of the circular lower tooling washer passes through the tooling screw, the lower tooling washer contacts the upper end face of the lower tooling sleeve, the lower end face of the upper tooling sleeve contacts the lower tooling washer, the center hole of the upper tooling washer passes through the tooling screw, the upper tooling washer contacts the upper end face of the upper tooling sleeve, and the lock nut contacts the upper tooling washer.

[0021] The flange face of the lock nut presses against the upper tooling gasket.

[0022] The advantages of this utility model are:

[0023] 1. Simple structure, easy to process and manufacture, low tooling manufacturing cost.

[0024] 2. It has strong versatility and can be used for the removal of the positioning pins of the box within a certain range. The tooling is small and lightweight, making it easy to fix on the box and reducing the risk of interference with the box structure, thus making it more versatile.

[0025] 3. This utility model reduces the risk of deformation and cracking of the box body caused by workers using jacks to remove pin holes, making it safer;

[0026] 4. It can be operated by a single person, effectively saving labor costs. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Figure 1 A diagram illustrating the effect of using a utility model tool for disassembling the positioning pins at the joint surfaces of two boxes.

[0029] Figure 2 for Figure 1 A partial view in direction A. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] like Figure 1 , Figure 2 As shown:

[0033] This utility model is a tooling for disassembling the positioning pins of a wind turbine gearbox.

[0034] The positioning pin 3 passes through the pin hole 10 of the upper housing 1 and the corresponding pin hole 20 of the lower housing 2, thereby positioning the upper housing 1 and the lower housing 2. The head of the positioning pin 3 has an internal threaded hole 31.

[0035] First, screw one end of the tooling screw 4 into the internal threaded hole 31 of the locating pin 3. The tooling screw 4 and the internal threaded hole 31 are screwed together. The threaded part of the tooling screw 4 is required to be tightened to the bottom of the internal threaded hole 31 of the locating pin 3 until it can no longer be tightened.

[0036] Tooling screw 4 is a fully threaded screw with a certain length.

[0037] The cylindrical lower tooling sleeve 5 is a cylindrical workpiece with a central through hole 51 in the middle. The diameter of the central through hole 51 in the lower tooling sleeve 5 is larger than that of the tooling screw 4 and the locating pin 3, to prevent the tooling screw 4 and the locating pin 3 from being unable to pass through the central through hole 51 of the lower tooling sleeve 5. The length of the central through hole 51 in the lower tooling sleeve 5 is greater than that of the locating pin 3, so that the entire locating pin 3 can be accommodated in the central through hole 51 after being removed. The central through hole 51 of the lower tooling sleeve 5 is passed through from above the tooling screw 4, and the lower end face of the lower tooling sleeve 5 contacts the flange face 21 of the lower housing 2. Then, the central hole 61 of the circular lower tooling gasket 6 is passed through from above the tooling screw 4, and the lower tooling gasket 6 contacts the upper end face of the lower tooling sleeve 5.

[0038] The cylindrical upper tooling sleeve 7 is also a cylindrical workpiece with a central through hole 71 in the middle. The central through hole 71 of the upper tooling sleeve 7 is slightly larger than the diameter of the tooling screw 4 to prevent the tooling screw 4 from being unable to pass through the central through hole 71 of the upper tooling sleeve 7. The upper tooling sleeve 7 can be selected with appropriate height according to the interference of different structural boxes. Since the height of the upper tooling sleeve 7 can be changed, this tooling has greater versatility.

[0039] The center through hole 71 of the upper tooling sleeve 7 passes through the top of the tooling screw 4, and the lower end face of the upper tooling sleeve 7 contacts the lower tooling gasket 6. Then, the center hole 81 of the upper tooling gasket 8 passes through the top of the tooling screw 4, and the upper tooling gasket 8 contacts the upper end face of the upper tooling sleeve 7. The lower tooling gasket 6 and the upper tooling gasket 8 are gaskets of the same specification.

[0040] Finally, screw the locking nut 9 onto the threaded part of the tooling screw 4 until the locking nut 9 contacts the upper tooling washer 8. The locking nut 9 has a flange face 91, which presses against the upper tooling washer 8. Use a wrench to continue turning the locking nut 9, so that the tooling screw 4 will be subjected to an upward tensile force. Since the tooling screw 4 is installed into the threaded hole 31 on the locating pin 3, this will drive the locating pin 3 upward. Continue turning the locking nut 9 until the locating pin 3 is pulled out from the corresponding pin holes of the upper housing 1 and the lower housing 2.

[0041] This fixture is mainly circular in cross-section and occupies a very small area. The fixture will not interfere with the upper box 1 and the lower box 2.

[0042] The existing method for removing the housing locating pins involves using a jack and corresponding tooling. However, because the tooling used with the jack is relatively large, it sometimes risks interfering with the outer contour of the housing or its external reinforcing ribs, rendering the tooling unusable. Furthermore, using a jack with tooling to remove the locating pins can be problematic. Due to the jack's considerable force, if the pin hole is severely deformed and the locating pin is stuck inside, forcibly removing it with the jack can easily deform the housing due to excessive force, and in severe cases, even cause cracks.

[0043] This utility model tool can be used to remove the positioning pins of boxes within a certain size range. In addition, the tool has low manufacturing cost, can be operated by a single person, and is easy to use.

[0044] 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 wind turbine gearbox housing positioning pin dismounting tool, the positioning pin passes through the housing and the corresponding pin hole of the housing to position the housing and the housing, characterized in that: The head of the positioning pin has an internally threaded hole; a tool screw is screwed into the internally threaded hole of the head of the positioning pin; the diameter of the central through hole of the lower tool sleeve is greater than the diameter of the tool screw and greater than the diameter of the positioning pin, the central through hole of the lower tool sleeve passes through the tool screw, and the lower end face of the lower tool sleeve is in contact with the flange face of the lower box body; the diameter of the central through hole of the upper tool sleeve is greater than the diameter of the tool screw, the central through hole of the upper tool sleeve passes through the tool screw, and the lower end face of the upper tool sleeve is in contact with the lower tool sleeve; the locking nut is screwed onto the thread of the tool screw, and the locking nut is in contact with the upper tool sleeve.

2. A tool for dismounting a positioning pin of a wind turbine gearbox housing according to claim 1, characterized in that: The threaded portion of the tool screw is screwed to the bottom of the internally threaded hole of the head of the positioning pin.

3. A tool for removing a positioning pin of a wind turbine gearbox housing according to claim 1, characterized in that: The lower tool sleeve and the upper tool sleeve are both cylindrical.

4. A tool for removing a positioning pin of a wind turbine gearbox housing according to claim 1, characterized in that: The length of the central through hole of the lower tool sleeve is greater than the length of the positioning pin.

5. A tool for removing a positioning pin of a wind turbine gearbox housing according to claim 1, characterized in that: The central hole of the circular lower tool gasket passes through the tool screw, the lower tool gasket is in contact with the upper end face of the lower tool sleeve, the lower end face of the upper tool sleeve is in contact with the lower tool gasket, the central hole of the upper tool gasket passes through the tool screw, the upper tool gasket is in contact with the upper end face of the upper tool sleeve, and the locking nut is in contact with the upper tool gasket.

6. A tool for removing a positioning pin of a wind turbine gearbox housing according to claim 5, characterized in that: The flange face of the locking nut presses the upper tool gasket.

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