Tool for bending oil pipe of wind power gear box

Abstract

The utility model provides a tool for bending an oil pipe of a wind power gear box, which is characterized in that two front side plates are fixed on a workbench and are distributed on two sides of a front bearing; the front cross beam penetrates through a bearing inner hole of the front bearing and is in clearance fit with the inner hole of the front bearing, and the two ends of the front cross beam are fixed to the two front side plates. The handle is fixed on the outer circle of the front bearing; the hollow buckle is fixed at the lower part of the excircle of the front bearing; the two rear side plates are fixed to the workbench and distributed on the two sides of the rear bearing, and the distance between the two rear side plates is larger than the width of the rear bearing. The rear cross beam penetrates through a bearing inner hole of the rear bearing and is in clearance fit with the inner hole of the rear bearing, and the two ends of the rear cross beam are fixed to the two rear side plates. The outer diameter of the rear bearing is smaller than that of the front bearing. According to the steel pipe bending device, the steel pipe can be bent without being bent on a bending machine.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine gearbox processing tooling, specifically a tooling for bending oil pipes in wind turbine gearboxes. 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 processing efficiency and quality of internal components of a gearbox play a crucial role. The gear transmission process within a gearbox relies heavily on lubrication, and numerous oil pipes are typically installed inside and outside the gearbox housing to ensure lubrication. These oil pipes vary in type and length. Due to the diverse structures of gearboxes, sometimes the oil pipes need to be bent at specific angles before installation to prevent interference. Usually, steel pipes are directly placed on a bending machine for processing. However, sometimes the bending angle accuracy of the oil pipes is not high, and further processing on a bending machine not only wastes machine capacity but also consumes time.

[0003] The technical solution of existing technology 1 is as follows:

[0004] Place the steel pipe directly onto the bending machine and bend the oil pipe at the desired angle at the corresponding part.

[0005] The disadvantages of existing technology 1 are:

[0006] Because the gearbox housing has a complex structure and the inner cavity is directly cast, there are certain errors in the internal dimensions of the housing. Sometimes the oil pipes need to be adjusted according to the actual situation inside the housing. Sometimes, after the oil pipes are bent at the specified angle, interference with the housing is found, and they need to be bent a second time on a bending machine. If they are sent to the bending machine for processing again, it will not only waste the bending machine's capacity, but also affect the assembly efficiency of the oil pipes. Utility Model Content

[0007] This utility model provides a tooling for bending oil pipes in wind turbine gearboxes. Its purpose is to overcome the shortcomings of the prior art and enable steel pipes to be bent without using a bending machine, thus effectively saving machine tool capacity.

[0008] The technical solution adopted by this utility model to solve its technical problem is:

[0009] A tooling for bending oil pipes in wind turbine gearboxes, characterized in that:

[0010] Two front side plates are fixed on the worktable. The two front side plates are distributed on both sides of the front bearing, and the distance between the two front side plates is greater than the width of the front bearing.

[0011] The front crossbeam passes through the bearing bore of the front bearing and is clearance-fitted with the bearing bore. The two ends of the front crossbeam are fixed to the two front side plates.

[0012] Secure the handle to the outer circumference of the front bearing;

[0013] The hollow clip is fixed to the lower part of the outer circle of the front bearing;

[0014] Two rear side plates are fixed on the worktable. The two rear side plates are distributed on both sides of the rear bearing, and the distance between the two rear side plates is greater than the width of the rear bearing.

[0015] The rear crossbeam passes through the bearing bore of the rear bearing and is clearance-fitted with the bearing bore. The two ends of the rear crossbeam are fixed to the two rear side plates.

[0016] The outer diameter of the rear bearing is smaller than that of the front bearing.

[0017] The front end of the steel pipe is inserted into the buckle, while the rear end of the steel pipe contacts the upper part of the outer circle of the rear bearing.

[0018] The base is welded and fixed to the workbench; the lower parts of the front side panels on both sides are welded and fixed to the base; the lower parts of the rear side panels on both sides are welded and fixed to the base.

[0019] The inner diameter of the through hole in the front side plate is larger than the inner diameter of the front bearing.

[0020] The front crossbeam is a solid cylindrical steel component.

[0021] The front crossbeam passes through the through holes in the two front side panels, and both ends of the front crossbeam are welded and fixed to the two front side panels respectively.

[0022] The welding point between the front crossbeam and the front side plate is on the outside of the front side plate.

[0023] The rear crossbeam is a bolt. The bolt passes through the inner hole of the rear bearing and is clearance-fitted with the inner hole of the rear bearing. The round nut is screwed onto the rear end of the bolt. The bolt head and the round nut are respectively pressed against the outer surfaces of the two rear side plates, thereby fixing the bolt to the two rear side plates.

[0024] The advantages of this utility model are:

[0025] 1) After the steel pipe is fixed on the tooling of this utility model, the handle is manually turned to bend the pipe along the outer circle of the bearing. There is no need to bend it on a bending machine, which saves the cost of processing on a machine tool.

[0026] 2) It can be used as needed based on the actual condition of the box, and the operation is simple. Assembly personnel can operate it, which effectively improves the assembly efficiency of oil pipes.

[0027] 3) The tooling is low in manufacturing cost, simple to clamp and fix, and has high clamping efficiency, which improves the efficiency of parts processing. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Figure 1 A simplified diagram of the tooling structure for clamping steel pipe parts during machining on the tooling of this utility model;

[0030] Figure 2 for Figure 1 AA partial view;

[0031] Figure 3 for Figure 1 A partial view of BB. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] like Figure 1 , Figure 2 , Figure 3 As shown:

[0035] This utility model is a tooling for bending oil pipes in wind turbine gearboxes.

[0036] The base 2 is fixed to the workbench 1 by welding.

[0037] This utility model uses two front side plates 3 of the same size. A through hole 31 is pre-drilled on the upper part of the front side plate 3, and the inner diameter of the through hole 31 is slightly larger than the inner diameter of the bearing of the front bearing 5.

[0038] Two front side plates 3 are symmetrically distributed on both sides of the front bearing 5, and the distance between the two front side plates 3 is greater than the width of the front bearing 3. Therefore, there is a certain gap C between the front side plates 3 and the end face of the front bearing 5 to prevent the front bearing 5 from interfering with the front side plates 3 during operation.

[0039] The front crossbeam 4 is a solid cylindrical steel component. The outer diameter of the front crossbeam 4 must be large enough to pass through the inner bore of the front bearing 5, with a certain clearance fit. The outer diameter of the front crossbeam 4 must also be smaller than the inner diameter of the pre-drilled through-hole 31 on the front side plate 3. The front crossbeam 4 is then passed through the pre-drilled through-hole 31 on the top of the front side plate 3, then through the inner bore of the front bearing 5, and finally through the pre-drilled through-hole 31 on the other side of the front side plate 3. After installation, the front crossbeam 4 is fixed to the front side plates 3 on both sides by welding. The welding points must be on the outside of the front side plates 3; the front bearing 5 must not be welded to the front crossbeam 4 (as this would prevent the front bearing 5 from rotating). The lower parts of the front side plates 3 on both sides are also fixed to the base 2 by welding.

[0040] This utility model uses two rear side plates 9 of the same size. A through hole 91 is pre-drilled on the upper part of the rear side plate 9, and the inner diameter of the through hole 91 is slightly larger than the bearing inner diameter of the rear bearing 10.

[0041] Two rear side plates 9 are symmetrically distributed on both sides of the rear bearing 10, and the distance between the two rear side plates 9 is greater than the width of the rear bearing 10. Therefore, there is a certain gap D between the rear side plates 9 and the end face of the rear bearing 10 to prevent the rear bearing 10 from interfering with the rear side plates 9 during operation.

[0042] Since the outer diameter of the rear bearing 10 is much smaller than that of the front bearing 5 used previously, a standard bolt 11 can be used directly through the inner hole of the bearing hole 10 to save tooling costs. The outer diameter of the standard bolt 11 must be large enough to pass through the inner hole of the rear bearing 10, and there must be a certain clearance fit between the bolt 11 and the inner hole of the rear bearing 10. The bolt 11 is first passed through the pre-drilled through hole 91 on the upper part of the rear side plate 9, then through the inner hole of the rear bearing 10, and finally through the pre-drilled through hole 91 on the other side of the rear side plate 9. The round nut 12 is screwed onto the rear end of the exposed bolt 11. By tightening the round nut 12, the bolt head 111 of the bolt 11 and the round nut 12 are tightly abutted against the outer surfaces of the rear side plates 9 on both sides, thus fixing the bolt 11 to the rear side plate 9. It is crucial not to overtighten the round nut 12. Overtightening can deform the rear side plates 9 on both sides, causing the rear bearing 10 to jam against the side plate 9, ultimately preventing the rear bearing 10 from rotating.

[0043] The handle 6 is a solid cylinder, which is welded to the outer circle of the front bearing 5 at a certain angle. The buckle 7 is a hollow rectangular steel, which is also welded to the lower part of the outer circle of the front bearing 5.

[0044] The bending principle of workpiece steel pipe 8:

[0045] First, insert the front end of the steel pipe 8 into the buckle 7 to fix it in place. The rear end of the steel pipe then contacts the upper part of the outer circle of the rear bearing 10, which acts as a support point. By manually turning the handle 6 clockwise, the front end of the steel pipe 8 rotates along with the outer circle of the front bearing 5. Through the interaction between the buckle 7 and the rear bearing 10, the steel pipe 8 is bent.

[0046] There is a certain gap between the rear side plate 9 and the end face of the rear bearing 10 to prevent the rear bearing 10 from interfering with the rear side plate 9 during operation.

[0047] The existing steel pipes are all bent to a certain angle on the bending machine before installation. If the angle is found to be incorrect, they need to be bent a second time and placed back on the bending machine for bending. After readjustment, if it is still not suitable, it needs to be put back on the bending machine.

[0048] This fixture can effectively achieve the required bending angle for steel pipes within a certain angle and size range without requiring a bending machine.

[0049] The advantages of this utility model tooling are:

[0050] 1. Simple structure, easy to process and manufacture;

[0051] 2. It has greater versatility and can be applied to steel pipe bending work within a certain angle range, saving tooling costs;

[0052] 3. It can be operated by a single person, reducing labor costs;

[0053] 4. Based on the actual condition of the box, it can be used as needed, with high clamping efficiency, effectively improving assembly efficiency.

[0054] 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 tooling for bending oil pipes in wind turbine gearboxes, characterized in that: Two front side plates are fixed to the worktable, positioned on either side of the front bearing, with the distance between them greater than the width of the front bearing. A front crossbeam passes through the inner bore of the front bearing and is clearance-fitted with it. Both ends of the front crossbeam are fixed to the two front side plates. A handle is fixed to the outer circumference of the front bearing. A hollow clip is fixed to the lower part of the outer circumference of the front bearing. Two rear side plates are fixed to the worktable, positioned on either side of the rear bearing, with the distance between them greater than the width of the rear bearing. A rear crossbeam passes through the inner bore of the rear bearing and is clearance-fitted with it. Both ends of the rear crossbeam are fixed to the two rear side plates. The outer diameter of the rear bearing is smaller than that of the front bearing. The front end of a steel pipe is inserted into the clip, while the rear end of the steel pipe contacts the upper part of the outer circumference of the rear bearing.

2. The tooling for bending oil pipes in wind turbine gearboxes as described in claim 1, characterized in that: The base is welded and fixed to the workbench; the lower parts of the front side panels on both sides are welded and fixed to the base; the lower parts of the rear side panels on both sides are welded and fixed to the base.

3. The tooling for bending oil pipes in wind turbine gearboxes as described in claim 1, characterized in that: The inner diameter of the through hole in the front side plate is larger than the inner diameter of the front bearing.

4. The tooling for bending oil pipes in wind turbine gearboxes as described in claim 1, characterized in that: The front crossbeam is a solid cylindrical steel component.

5. The tooling for bending oil pipes in wind turbine gearboxes as described in claim 1, characterized in that: The front crossbeam passes through the through holes in the two front side panels, and both ends of the front crossbeam are welded and fixed to the two front side panels respectively.

6. The tooling for bending oil pipes in wind turbine gearboxes as described in claim 4, characterized in that: The welding point between the front crossbeam and the front side plate is on the outside of the front side plate.

7. The tooling for bending oil pipes in wind turbine gearboxes as described in claim 1, characterized in that: The rear crossbeam is a bolt. The bolt passes through the inner hole of the rear bearing and is clearance-fitted with the inner hole of the rear bearing. The round nut is screwed onto the rear end of the bolt. The bolt head and the round nut are respectively pressed against the outer surfaces of the two rear side plates, thereby fixing the bolt to the two rear side plates.

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