WO2024021638A1

WO2024021638A1 - Deep hole broken bolt removal tool for wind turbine hub, and preparation method therefor

Info

Publication number: WO2024021638A1
Application number: PCT/CN2023/082660
Authority: WO
Inventors: 陈海军; 杨国; 曹晓冉; 王琛
Original assignee: 华能新疆能源开发有限公司新能源东疆分公司
Priority date: 2022-07-26
Filing date: 2023-03-21
Publication date: 2024-02-01
Also published as: CN115351756A

Abstract

Disclosed are a deep hole broken bolt removal tool for a wind turbine hub, and a preparation method therefor. The method comprises: step a: acquiring a depth La of a deep hole in a wind turbine hub, and a diameter Ra of a broken bolt; step b: according to the data acquired in step a, determining a manufacturing parameter of a broken bolt removal tool; step c: after determining the manufacturing parameter of the broken bolt removal tool, machining the broken bolt removal tool by means of a machining apparatus. In the present invention, a broken bolt removal tool is machined by means of a machining apparatus, such that a parameter of the broken bolt removal tool can be effectively determined and manufactured according to specified parameters of the deep hole of the wind turbine hub and the broken bolt, so that the broken bolt removal tool can be effectively adapted to the deep hole of the wind turbine hub and the broken bolt, and the removal efficiency of the broken bolt removal tool can be greatly improved; structurally, by means of performing expansion using a tool head to increase friction force, a threaded clamp can be combined more tightly to the broken bolt, without being prone to falling off.

Description

A tool for removing and breaking bolts from deep holes in fan hubs and its preparation method

Technical field

The invention relates to the technical field of wind power generation, and in particular to a tool for removing bolts from deep holes in a wind turbine hub and a preparation method thereof.

Background technique

Wind power generation is a clean energy source. The wind turbine hub is an important part of the wind turbine. In order to connect the wind turbine tower and the wind turbine blades, high-strength bolts are used. Since the parts are not rotated during operation, it is easy to cause some connecting bolts to break, thus causing the wind turbine to be damaged. The blade connection is unevenly stressed, causing the blades to fall off and be damaged, causing a safety accident such as the wind turbine tower toppling over. The broken bolts need to be replaced in time.

However, due to the large differences in the depth of the deep hole in the fan hub and the diameter of the broken bolt, the existing bolt removal tools cannot be effectively applied to the deep holes and broken bolts of different specifications of the wind turbine hub. When there is a big difference between the size of the bolt-breaking tool and the parameters of the deep hole of the fan hub and the bolt-breaking tool, it will lead to the failure of the bolt-breaking tool or the problem of poor bolt-breaking effect. Moreover, the existing technology lacks how to target different bolt-breaking tools. A method of manufacturing a bolt-removing tool corresponding to the deep hole and bolt-breaking of the fan hub according to the specifications. To this end, we propose a tool for removing the bolt-breaking from the deep hole of the fan hub and its preparation method to solve the problem of the narrow space of the fan hub. , the problem of long rotating screw, thereby improving work efficiency and ensuring reliable operation of the equipment.

Contents of the invention

The technical problem to be solved by the present invention is: how to process the bolt-breaking tool according to the deep holes and breaking bolts of the fan hub of different specifications, so as to improve the bolt-breaking efficiency of the bolt-breaking tool.

In order to solve the above technical problems, the present invention provides a fan hub deep hole bolt removal tool and a preparation method thereof, including:

Step a: Obtain the depth La of the deep hole of the fan hub and the diameter Ra of the broken bolt;

Step b: Determine the manufacturing parameters of the bolt removal tool based on the data obtained in step a;

Step c: After determining the manufacturing parameters of the bolt-breaking tool, process the bolt-breaking tool through a processing device; wherein,

The bolt-breaking tool includes a threaded snap joint, a hexagonal head bolt, a rotating screw, a tool body, a wedge-shaped stop and an end cover. The tool body is a hollow structure, and the wedge-shaped stop is arranged at one end of the tool body. On the tool body, the threaded clamping joint is provided on the wedge-shaped stopper, the end cover is provided on the other end of the tool body, and one end of the rotating screw is connected with a hexagonal head bolt;

In step b, when determining the manufacturing parameters of the bolt removal tool, the tool body is set according to the relationship between the depth La of the deep hole of the fan hub and the depth of the preset deep hole of the fan hub. length, and then set the length of the rotating screw according to the set length of the tool body, and determine the outer diameter of the tool body according to the relationship between the diameter Ra of the broken bolt and the preset diameter of the broken bolt. diameter, and then determine the inner diameter of the tool body according to the outer diameter of the tool body, and then determine the diameter of the rotating screw according to the inner diameter of the tool body, and then determine the diameter of the threaded clamping joint according to the diameter of the rotating screw. Expand the inner diameter of the cavity.

In the embodiment of the present application, a tool for removing a bolt from a deep hole in a fan hub and a preparation method thereof are provided.

The depth L1 of the first preset fan hub deep hole, the depth L2 of the second preset fan hub deep hole, the depth L3 of the third preset fan hub deep hole, and the depth L4 of the fourth preset fan hub deep hole are preset. , and L1<L2<L3<L4; set the length A1 of the first preset tool body, the length A2 of the second preset tool body, the length A3 of the third preset tool body, and the length of the fourth preset tool body. A4, and A1＜A2＜A3＜A4;

When determining the length of the tool body, the length of the tool body is set according to the relationship between the depth La of the deep hole of the fan hub and the depth Li of each preset deep hole of the fan hub:

When La<L1, the length A1 of the first preset tool body is selected as the length of the tool body;

When L1≤La<L2, the length A2 of the second preset tool body is selected as the length of the tool body;

When L2≤La<L3, the length A3 of the third preset tool body is selected as the length of the tool body;

When L3≤La<L4, the length A4 of the fourth preset tool body is selected as the length of the tool body.

The reference length D1 of the first preset tool body, the reference length D2 of the second preset tool body, the reference length D3 of the third preset tool body, and the reference length D4 of the fourth preset tool body are preset, and D1<D2<D3<D4; set the length E1 of the first preset rotating screw, the length E2 of the second preset rotating screw, the length E3 of the third preset rotating screw, and the length E4 of the fourth preset rotating screw, and E1 ＜E2＜E3＜E4;

After selecting the length Ai of the i-th preset tool body as the length of the tool body, i=1, 2, 3, 4, according to the selected length Ai of the i-th preset tool body and each The relationship between the reference length Di of the preset tool body sets the length of the rotating screw:

When Ai<D1, the length E1 of the first preset rotating screw is selected as the length of the rotating screw;

When D1≤Ai<D2, the length E2 of the second preset rotating screw is selected as the length of the rotating screw;

When D2≤Ai<D3, the length E3 of the third preset rotating screw is selected as the length of the rotating screw;

When D3≤Ai<D4, the length E4 of the fourth preset rotating screw is selected as the length of the rotating screw.

The diameter R1 of the first preset breaking bolt, the diameter R2 of the second preset breaking bolt, the diameter R3 of the third preset breaking bolt, and the diameter R4 of the fourth preset breaking bolt are preset, and R1<R2<R3< R4; Set the outer diameter B1 of the first preset tool body, the outer diameter B2 of the second preset tool body, the outer diameter B3 of the third preset tool body, and the outer diameter B4 of the fourth preset tool body, and B1 ＜B2＜B3＜B4;

When determining the length of the tool body, the outer diameter of the tool body is set according to the relationship between the diameter Ra of the breaking bolt and the preset diameter Ri of the breaking bolt:

When Ra<R1, select the outer diameter B1 of the first preset tool body as the outer diameter of the tool body;

When R1≤Ra<R2, select the outer diameter B2 of the second preset tool body as the outer diameter of the tool body;

When R2≤Ra<R3, select the outer diameter B3 of the third preset tool body as the outer diameter of the tool body;

When R3≤Ra<R4, the outer diameter B4 of the fourth preset tool body is selected as the outer diameter of the tool body.

The reference outer diameter S1 of the first preset tool body, the reference outer diameter S2 of the second preset tool body, the reference outer diameter S3 of the third preset tool body, and the reference outer diameter S4 of the fourth preset tool body are preset. , and S1<S2<S3<S4; set the inner diameter M1 of the first preset tool body, the inner diameter M2 of the second preset tool body, the inner diameter M3 of the third preset tool body, and the inner diameter of the fourth preset tool body. M4, and M1＜M2＜M3＜M4;

After selecting the outer diameter Bi of the i-th preset tool body as the outer diameter of the tool body, i=1, 2, 3, 4, according to the selected outer diameter of the i-th preset tool body The relationship between Bi and the reference outer diameter Si of each preset tool body sets the inner diameter of the tool body:

When Bi<S1, select the inner diameter M1 of the first preset tool body as the inner diameter of the tool body;

When S1≤Bi<S2, select the inner diameter M2 of the second preset tool body as the inner diameter of the tool body;

When S2≤Bi<S3, select the inner diameter M3 of the third preset tool body as the inner diameter of the tool body;

When S3≤Bi<S4, the inner diameter M4 of the fourth preset tool body is selected as the inner diameter of the tool body.

The reference inner diameter P1 of the first preset tool body, the reference inner diameter P2 of the second preset tool body, the reference inner diameter P3 of the third preset tool body, and the reference inner diameter P4 of the fourth preset tool body are preset, and P1<P2<P3<P4; Set the diameter N1 of the first preset rotating screw, the diameter N2 of the second preset rotating screw, the diameter N3 of the third preset rotating screw, and the diameter N4 of the fourth preset rotating screw, and N1 ＜N2＜N3＜N4;

After selecting the inner diameter Mi of the i-th preset tool body as the inner diameter of the tool body, i=1, 2, 3, 4, according to the selected inner diameter Mi of the i-th preset tool body and each The relationship between the reference inner diameter Pi of the preset tool body sets the diameter of the rotating screw:

When Mi<P1, select the diameter N1 of the first preset rotating screw as the diameter of the rotating screw;

When P1≤Mi<P2, select the diameter N2 of the second preset rotating screw as the diameter of the rotating screw;

When P2≤Mi<P3, select the diameter N3 of the third preset rotating screw as the diameter of the rotating screw;

When P3≤Mi<P4, the diameter N4 of the fourth preset rotating screw is selected as the diameter of the rotating screw.

The reference diameter Y1 of the first preset rotating screw, the reference diameter Y2 of the second preset rotating screw, the reference diameter Y3 of the third preset rotating screw, and the reference diameter Y4 of the fourth preset rotating screw are preset, and Y1<Y2＜Y3＜Y4; Set the expansion cavity inner diameter K1 of the first preset threaded clamp connector, the expansion cavity inner diameter K2 of the second preset threaded clamp connector, the expansion cavity inner diameter K3 of the third preset threaded clamp connector and the fourth preset threaded clamp connector. Suppose the inner diameter of the expansion cavity of the threaded clamp joint is K4, and K1＜K2＜K3＜K4;

After selecting the diameter Ni of the i-th preset rotating screw as the diameter of the rotating screw, i=1, 2, 3, 4, according to the selected diameter Ni of the i-th preset rotating screw and each The relationship between the reference diameter Yi of the preset rotating screw sets the inner diameter of the expansion cavity of the threaded clamp joint:

When Ni<Y1, the inner diameter K1 of the expansion cavity of the first preset threaded clamp joint is selected as the inner diameter of the expansion cavity of the clamp joint;

When Y1≤Ni<Y2, the inner diameter K2 of the expansion cavity of the second preset threaded card joint is selected as the inner diameter of the expansion cavity of the card joint;

When Y2≤Ni<Y3, the inner diameter K3 of the expansion cavity of the third preset threaded clamp joint is selected as the inner diameter of the expansion cavity of the clamp joint;

When Y3≤Ni<Y4, the inner diameter K4 of the expansion cavity of the fourth preset threaded card joint is selected as the inner diameter of the expansion cavity of the card joint.

In the embodiment of the present application, a tool for removing bolts from a deep hole in a fan hub is provided, including:

The tool body is a hollow structure;

A wedge-shaped stopper is provided on one end of the tool body and is used to open the upper part of the tool body;

An end cap is provided on the other end of the tool body;

A threaded clamping joint is provided on the wedge-shaped stop and is used to clamp the broken bolt;

The rotating screw is connected to the end cover and is used to push open the upper part of the tool body against the wedge-shaped stopper;

A hexagonal head bolt is provided on one end of the rotating screw for rotating the rotating screw.

In the embodiment of the present application, a tool for removing bolts from a deep hole in a fan hub is provided.

The center of the end cap is provided with an internal thread matching the rotating screw.

A cavity is provided inside the tool body, and one end of the rotating screw is disposed in the cavity.

Compared with the existing technology, a tool for removing bolts from a deep hole in a fan hub and a preparation method thereof according to the embodiment of the present invention have the following beneficial effects:

The present invention processes the bolt-breaking tool through a processing device, so that the parameters of the bolt-breaking tool can be confirmed and manufactured effectively according to the specifications of the deep hole of the fan hub and the bolt, so that the bolt-breaking tool can be effectively adapted. For the deep hole of the fan hub and the broken bolt, it can greatly improve the removal efficiency of the broken bolt tool. In the structure, the tool head is expanded to increase the friction, so that the threaded joint and the broken bolt can be more closely combined. Tight and not easy to fall off.

Description of drawings

Figure 1 is a step flow chart of a tool for removing a bolt from a deep hole in a turbine hub and its preparation method according to an embodiment of the present invention;

Figure 2 is a schematic structural diagram of a tool for removing bolts from a deep hole in a turbine hub according to an embodiment of the present invention.

In the picture, 1. Threaded clamp joint; 2. Wedge stop; 3. Tool body; 4. Rotating screw; 5. End cover; 6. Hexagonal head bolt.

Detailed ways

The specific implementation manner of the present utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not used to limit the scope of the present invention.

In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outside", etc. are based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present application and simplifying the description, and are not indicated or implied. The devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the application.

The terms “first” and “second” are used for descriptive purposes only and shall not be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of this application, unless otherwise stated, "plurality" means two or more.

In the description of this application, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood on a case-by-case basis.

Referring to Figure 1, in an embodiment of the present application, a tool for removing a bolt from a deep hole in a fan hub and a preparation method thereof are provided, which includes the following steps:

Referring to Figure 2, the bolt removal tool includes a threaded clamping joint 1, a hexagonal head bolt 6, a rotating screw 4, a tool body 3, a wedge stop 2 and an end cover 5.

Specifically, the tool body 3 has a hollow structure, the wedge-shaped stopper 2 is provided on one end of the tool body 3, and the threaded clamping joint 1 is provided on the wedge-shaped stopper 2. The end cap 5 is provided on the other end of the tool body 3, and one end of the rotating screw 4 is connected with a hexagonal head bolt 6;

Specifically, in step b, when determining the manufacturing parameters of the bolt removal tool, the required parameters are set according to the relationship between the depth La of the deep hole of the fan hub and the depth of the preset deep hole of the fan hub. The length of the tool body is set, and then the length of the rotating screw is set according to the set length of the tool body, and the length of the rotating screw is determined according to the relationship between the diameter Ra of the broken bolt and the preset diameter of the broken bolt. The outer diameter of the tool body is determined based on the outer diameter of the tool body. The inner diameter of the tool body is determined based on the inner diameter of the tool body. The diameter of the rotating screw is determined based on the diameter of the rotating screw. The inner diameter of the expansion cavity of the threaded card joint.

Specifically, when the above method is implemented, the depth L1 of the first preset fan hub deep hole, the depth L2 of the second preset fan hub deep hole, the depth L3 of the third preset fan hub deep hole, and the third preset fan hub deep hole are preset. The depth of the four preset fan hub deep holes is L4, and L1＜L2＜L3＜L4; set the length A1 of the first preset tool body, the length A2 of the second preset tool body, and the length of the third preset tool body. The length of A3 and the fourth preset tool body is A4, and A1＜A2＜A3＜A4;

It can be seen that by setting the length of the tool body according to the relationship between the depth La of the deep hole of the fan hub and the depth of each preset deep hole of the fan hub, the accuracy of determining the length of the tool body can be effectively improved. Accuracy, thereby ensuring that the tool body has sufficient length to ensure the removal effect of the bolt-breaking tool.

Specifically, when the above method is implemented, the reference length D1 of the first preset tool body, the reference length D2 of the second preset tool body, the reference length D3 of the third preset tool body, and the fourth preset length are preset. The reference length of the tool body is D4, and D1＜D2＜D3＜D4; set the length E1 of the first preset rotating screw, the length E2 of the second preset rotating screw, the length E3 of the third preset rotating screw, and the length of the fourth preset rotating screw. The length of the rotating screw is preset E4, and E1＜E2＜E3＜E4;

Specifically, the length of the rotating screw is set according to the relationship between the selected length Ai of the i-th preset tool body and the reference length Di of each of the preset tool bodies, so that the length of the rotating screw is sufficient. , thereby ensuring that the breaking bolt removal tool can penetrate deep into the deep hole of the fan hub to remove the breaking bolt.

Specifically, when the above method is implemented, the diameter R1 of the first preset breaking bolt, the diameter R2 of the second preset breaking bolt, the diameter R3 of the third preset breaking bolt, and the diameter of the fourth preset breaking bolt are preset. Diameter R4, and R1＜R2＜R3＜R4; set the outer diameter B1 of the first preset tool body, the outer diameter B2 of the second preset tool body, the outer diameter B3 of the third preset tool body and the fourth preset tool body. Assume that the outer diameter of the tool body is B4, and B1＜B2＜B3＜B4;

It can be seen that by setting the outer diameter of the tool body according to the relationship between the diameter Ra of the broken bolt and the preset diameter of the broken bolt, the accuracy in determining the outer diameter of the tool body can be effectively improved. This ensures that the tool body has a suitable outer diameter to ensure the removal effect of the bolt-breaking tool.

Specifically, when the above method is implemented, the reference outer diameter S1 of the first preset tool body, the reference outer diameter S2 of the second preset tool body, the reference outer diameter S3 of the third preset tool body, and the third preset tool body are preset. Four preset reference outer diameters S4 of the tool body, and S1<S2<S3<S4; set the inner diameter M1 of the first preset tool body, the inner diameter M2 of the second preset tool body, and the inner diameter of the third preset tool body. M3 and the fourth preset inner diameter of the tool body M4, and M1＜M2＜M3＜M4;

Specifically, the inner diameter of the tool body is set according to the relationship between the selected outer diameter Bi of the i-th preset tool body and the reference outer diameter Si of each of the preset tool bodies, so that the inner diameter of the tool body is The inner diameter is sufficient to ensure that the rotating screw can enter the tool body normally.

Specifically, when the above method is implemented, the reference inner diameter P1 of the first preset tool body, the reference inner diameter P2 of the second preset tool body, the reference inner diameter P3 of the third preset tool body, and the fourth preset tool body are preset. The reference inner diameter of the tool body is P4, and P1＜P2＜P3＜P4; set the diameter N1 of the first preset rotating screw, the diameter N2 of the second preset rotating screw, the diameter N3 of the third preset rotating screw, and the diameter of the fourth preset rotating screw. The diameter of the rotating screw is preset N4, and N1＜N2＜N3＜N4;

Specifically, the diameter of the rotating screw is set according to the relationship between the selected inner diameter Mi of the i-th preset tool body and the reference inner diameter Pi of each preset tool body, so that the inner diameter of the tool body is sufficient. , thereby ensuring that the rotating screw can enter the tool body normally.

Specifically, when the above method is implemented, the reference diameter Y1 of the first preset rotating screw, the reference diameter Y2 of the second preset rotating screw, the reference diameter Y3 of the third preset rotating screw, and the fourth preset rotation screw are preset. The reference diameter of the rotating screw Y4, and Y1＜Y2＜Y3＜Y4; set the expansion cavity inner diameter K1 of the first preset threaded clamp joint, the expansion cavity inner diameter K2 of the second preset threaded clamp joint, and the expansion cavity inner diameter K2 of the third preset thread clamp The inner diameter K3 of the expansion cavity of the joint and the inner diameter K4 of the expansion cavity of the fourth preset threaded card joint, and K1＜K2＜K3＜K4;

Specifically, the inner diameter of the expansion cavity of the threaded clamp joint is set according to the relationship between the selected diameter Ni of the i-th preset rotating screw and the reference diameter Yi of each of the preset rotating screws, so that the thread clamps The inner diameter of the expansion cavity of the joint is wide enough to ensure that the threaded clamping joint can fit tightly onto the broken bolt to facilitate removal of the broken bolt.

Referring to Figure 2, in an embodiment of the present application, a tool for removing a bolt from a deep hole in a fan hub is provided, which includes:

The tool body 3 is a hollow structure with a cavity inside;

A wedge-shaped stopper 2 is provided on one end of the tool body 3 and is used to open the upper part of the tool body 3;

The end cap 5 is provided on the other end of the tool body 3 and has an expansion cavity inside;

The threaded clamping joint 1 is provided on the wedge-shaped stopper 2 and is used to clamp the broken bolt;

The rotating screw 4 is connected to the end cover 5 and is used to resist the wedge stop 2 to open the upper part of the tool body 3;

A hexagonal head bolt 6 is fixedly mounted on one end of the rotating screw 4 for rotating the rotating screw 4 .

As shown in Figure 2, the specific working principle is to first drill a hole in the broken bolt, then put the threaded clamping joint 1 into the hole, tighten the hexagonal head bolt 6, and squeeze the screw through the rotating screw 4. Press the wedge-shaped stopper 2 to open the upper part of the tool body 3 so that the threaded clamping joint 1 closely fits the inner wall of the broken bolt hole. Turn the tool body 3 to take out the section bolt. When recovering, only It is only necessary to unscrew the rotating screw 4. The present invention solves the problem of loose bolts and easy falling off during the process of removing the broken bolts by expanding the head of the device and increasing the friction, and greatly improves the efficiency of removing the broken bolts. .

The center of the end cap 5 is provided with an internal thread matching the rotating screw 4 .

Specifically, the thread on the rotating screw 4 matches the internal thread provided at the center of the end cap 5 so that the rotating screw 4 can rotate on the end cap 5 so that the rotating screw 4 into the tool body 3.

A cavity is provided inside the tool body 3, and one end of the rotating screw 4 is disposed in the cavity.

Specifically, the cavity provided inside the tool body 3 can accommodate the rotating screw 4 , so that the rotating screw 4 can move axially in the cavity at will, and the diameter of the rotating screw 4 is limited. move towards.

In summary, embodiments of the present invention provide a tool for removing the broken bolt from the deep hole of the fan hub and a preparation method thereof, which includes step a: obtaining the depth La of the deep hole of the fan hub and the diameter Ra of the broken bolt; step b: according to step a The obtained data determines the manufacturing parameters of the bolt-breaking tool; Step c: After determining the manufacturing parameters of the bolt-breaking tool, the bolt-breaking tool is processed through the processing device; in the present invention, the bolt-breaking tool is processed by the processing device , so that the parameters of the bolt removal tool can be effectively confirmed and manufactured according to the specifications and parameters of the fan hub deep hole and bolt breaking, so that the bolt removal tool can effectively adapt to the wind turbine hub deep hole and bolt breaking, and thus can effectively Dadi improves the removal efficiency of the bolt-breaking tool. The structure adopts the method of expanding the head of the tool to increase friction, so that the threaded joint and the bolt can be combined more tightly and will not fall off easily.

Those skilled in the art will understand that embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment that combines software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each process and/or block in the flowchart illustrations and/or block diagrams, and combinations of processes and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine, such that the instructions executed by the processor of the computer or other programmable data processing device produce a use A device for realizing the functions specified in one process or multiple processes of the flowchart and/or one block or multiple blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory that causes a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction means, the instructions The device implements the functions specified in a process or processes of the flowchart and/or a block or blocks of the block diagram.

These computer program instructions may also be loaded onto a computer or other programmable data processing device, causing a series of operating steps to be performed on the computer or other programmable device to produce computer-implemented processing, thereby executing on the computer or other programmable device. Instructions provide steps for implementing the functions specified in a process or processes of a flowchart diagram and/or a block or blocks of a block diagram.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that the present invention can still be modified. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention shall be covered by the scope of the claims of the present invention.

Claims

A method for preparing a tool for removing bolts from deep holes in a fan hub, which is characterized by including:

Step a: Obtain the depth La of the deep hole of the fan hub and the diameter Ra of the broken bolt;

Step b: Determine the manufacturing parameters of the bolt removal tool based on the data obtained in step a;

Step c: After determining the manufacturing parameters of the bolt-breaking tool, process the bolt-breaking tool through a processing device; wherein,

The bolt-breaking tool includes a threaded snap joint, a hexagonal head bolt, a rotating screw, a tool body, a wedge-shaped stop and an end cover. The tool body is a hollow structure, and the wedge-shaped stop is arranged at one end of the tool body. On the tool body, the threaded clamping joint is provided on the wedge-shaped stopper, the end cover is provided on the other end of the tool body, and one end of the rotating screw is connected with a hexagonal head bolt;

In step b, when determining the manufacturing parameters of the bolt removal tool, the tool body is set according to the relationship between the depth La of the deep hole of the fan hub and the depth of the preset deep hole of the fan hub. length, and then set the length of the rotating screw according to the set length of the tool body, and determine the outer diameter of the tool body according to the relationship between the diameter Ra of the broken bolt and the preset diameter of the broken bolt. diameter, and then determine the inner diameter of the tool body according to the outer diameter of the tool body, and then determine the diameter of the rotating screw according to the inner diameter of the tool body, and then determine the diameter of the threaded clamp joint according to the diameter of the rotating screw. Expand the inner diameter of the cavity.
A method for preparing a tool for removing bolts from a deep hole in a fan hub according to claim 1, characterized in that:

The depth L1 of the first preset fan hub deep hole, the depth L2 of the second preset fan hub deep hole, the depth L3 of the third preset fan hub deep hole, and the depth L4 of the fourth preset fan hub deep hole are preset. , and L1<L2<L3<L4; set the length A1 of the first preset tool body, the length A2 of the second preset tool body, the length A3 of the third preset tool body, and the length of the fourth preset tool body. A4, and A1＜A2＜A3＜A4;

When determining the length of the tool body, the length of the tool body is set according to the relationship between the depth La of the deep hole of the fan hub and the depth Li of each preset deep hole of the fan hub:

When La<L1, the length A1 of the first preset tool body is selected as the length of the tool body;

When L1≤La<L2, the length A2 of the second preset tool body is selected as the length of the tool body;

When L2≤La<L3, the length A3 of the third preset tool body is selected as the length of the tool body;

When L3≤La<L4, the length A4 of the fourth preset tool body is selected as the length of the tool body.
A method for preparing a tool for removing bolts from a deep hole in a fan hub according to claim 2, characterized in that:

The reference length D1 of the first preset tool body, the reference length D2 of the second preset tool body, the reference length D3 of the third preset tool body, and the reference length D4 of the fourth preset tool body are preset, and D1<D2<D3<D4; set the length E1 of the first preset rotating screw, the length E2 of the second preset rotating screw, the length E3 of the third preset rotating screw, and the length E4 of the fourth preset rotating screw, and E1 ＜E2＜E3＜E4;

After selecting the length Ai of the i-th preset tool body as the length of the tool body, i=1, 2, 3, 4, according to the selected length Ai of the i-th preset tool body and each The relationship between the reference length Di of the preset tool body sets the length of the rotating screw:

When Ai<D1, the length E1 of the first preset rotating screw is selected as the length of the rotating screw;

When D1≤Ai<D2, the length E2 of the second preset rotating screw is selected as the length of the rotating screw;

When D2≤Ai<D3, the length E3 of the third preset rotating screw is selected as the length of the rotating screw;

When D3≤Ai<D4, the length E4 of the fourth preset rotating screw is selected as the length of the rotating screw.
A method for preparing a tool for removing bolts from a deep hole in a fan hub according to claim 1, characterized in that:

The diameter R1 of the first preset breaking bolt, the diameter R2 of the second preset breaking bolt, the diameter R3 of the third preset breaking bolt, and the diameter R4 of the fourth preset breaking bolt are preset, and R1<R2<R3< R4; Set the outer diameter B1 of the first preset tool body, the outer diameter B2 of the second preset tool body, the outer diameter B3 of the third preset tool body, and the outer diameter B4 of the fourth preset tool body, and B1 ＜B2＜B3＜B4;

When determining the length of the tool body, the outer diameter of the tool body is set according to the relationship between the diameter Ra of the breaking bolt and the preset diameter Ri of the breaking bolt:

When Ra<R1, select the outer diameter B1 of the first preset tool body as the outer diameter of the tool body;

When R1≤Ra<R2, select the outer diameter B2 of the second preset tool body as the outer diameter of the tool body;

When R2≤Ra<R3, select the outer diameter B3 of the third preset tool body as the outer diameter of the tool body;

When R3≤Ra<R4, the outer diameter B4 of the fourth preset tool body is selected as the outer diameter of the tool body.
A method for preparing a tool for removing bolts from a deep hole in a fan hub according to claim 4, characterized in that:

The reference outer diameter S1 of the first preset tool body, the reference outer diameter S2 of the second preset tool body, the reference outer diameter S3 of the third preset tool body, and the reference outer diameter S4 of the fourth preset tool body are preset. , and S1<S2<S3<S4; set the inner diameter M1 of the first preset tool body, the inner diameter M2 of the second preset tool body, the inner diameter M3 of the third preset tool body, and the inner diameter of the fourth preset tool body. M4, and M1＜M2＜M3＜M4;

After selecting the outer diameter Bi of the i-th preset tool body as the outer diameter of the tool body, i=1, 2, 3, 4, according to the selected outer diameter of the i-th preset tool body The relationship between Bi and the reference outer diameter Si of each preset tool body sets the inner diameter of the tool body:

When Bi<S1, select the inner diameter M1 of the first preset tool body as the inner diameter of the tool body;

When S1≤Bi<S2, select the inner diameter M2 of the second preset tool body as the inner diameter of the tool body;

When S2≤Bi<S3, select the inner diameter M3 of the third preset tool body as the inner diameter of the tool body;

When S3≤Bi<S4, the inner diameter M4 of the fourth preset tool body is selected as the inner diameter of the tool body.
A method for preparing a tool for removing bolts from a deep hole in a fan hub according to claim 5, characterized in that:

The reference inner diameter P1 of the first preset tool body, the reference inner diameter P2 of the second preset tool body, the reference inner diameter P3 of the third preset tool body, and the reference inner diameter P4 of the fourth preset tool body are preset, and P1<P2<P3<P4; Set the diameter N1 of the first preset rotating screw, the diameter N2 of the second preset rotating screw, the diameter N3 of the third preset rotating screw, and the diameter N4 of the fourth preset rotating screw, and N1 ＜N2＜N3＜N4;

After selecting the inner diameter Mi of the i-th preset tool body as the inner diameter of the tool body, i=1, 2, 3, 4, according to the selected inner diameter Mi of the i-th preset tool body and each The relationship between the reference inner diameter Pi of the preset tool body sets the diameter of the rotating screw:

When Mi<P1, select the diameter N1 of the first preset rotating screw as the diameter of the rotating screw;

When P1≤Mi<P2, select the diameter N2 of the second preset rotating screw as the diameter of the rotating screw;

When P2≤Mi<P3, select the diameter N3 of the third preset rotating screw as the diameter of the rotating screw;

When P3≤Mi<P4, the diameter N4 of the fourth preset rotating screw is selected as the diameter of the rotating screw.
A method for preparing a tool for removing bolts from a deep hole in a fan hub according to claim 6, characterized in that:

The reference diameter Y1 of the first preset rotating screw, the reference diameter Y2 of the second preset rotating screw, the reference diameter Y3 of the third preset rotating screw, and the reference diameter Y4 of the fourth preset rotating screw are preset, and Y1<Y2＜Y3＜Y4; Set the expansion cavity inner diameter K1 of the first preset threaded clamp connector, the expansion cavity inner diameter K2 of the second preset threaded clamp connector, the expansion cavity inner diameter K3 of the third preset threaded clamp connector and the fourth preset threaded clamp connector. Suppose the inner diameter of the expansion cavity of the threaded clamp joint is K4, and K1＜K2＜K3＜K4;

After selecting the diameter Ni of the i-th preset rotating screw as the diameter of the rotating screw, i=1, 2, 3, 4, according to the selected diameter Ni of the i-th preset rotating screw and each The relationship between the reference diameter Yi of the preset rotating screw sets the inner diameter of the expansion cavity of the threaded clamp joint:

When Ni<Y1, the inner diameter K1 of the expansion cavity of the first preset threaded clamp joint is selected as the inner diameter of the expansion cavity of the clamp joint;

When Y1≤Ni<Y2, the inner diameter K2 of the expansion cavity of the second preset threaded card joint is selected as the inner diameter of the expansion cavity of the card joint;

When Y2≤Ni<Y3, the inner diameter K3 of the expansion cavity of the third preset threaded clamp joint is selected as the inner diameter of the expansion cavity of the clamp joint;

When Y3≤Ni<Y4, the inner diameter K4 of the expansion cavity of the fourth preset threaded card joint is selected as the inner diameter of the expansion cavity of the card joint.
A fan hub deep hole bolt removal tool prepared according to the preparation method of a fan hub deep hole bolt removal tool according to claims 1-7, is characterized in that it includes:

The tool body is a hollow structure;

A wedge-shaped stopper is provided on one end of the tool body and is used to open the upper part of the tool body;

An end cap is provided on the other end of the tool body;

A threaded clamping joint is provided on the wedge-shaped stop and is used to clamp the broken bolt;

The rotating screw is connected to the end cover and is used to push open the upper part of the tool body against the wedge-shaped stopper;

A hexagonal head bolt is provided on one end of the rotating screw for rotating the rotating screw.
A wind turbine hub deep hole bolt removal tool according to claim 8, characterized in that:

The center of the end cap is provided with an internal thread matching the rotating screw.
A wind turbine hub deep hole bolt removal tool according to claim 8, characterized in that:

A cavity is provided inside the tool body, and one end of the rotating screw is disposed in the cavity.