Low-speed end coupling for integrated wind power gear box test

Abstract

The utility model provides a low-speed end coupling for an integrated wind power gear box test, which comprises a connecting flange I, an inner gear sleeve I, a transparent cover, a baffle plate, an outer gear shaft, an inner gear sleeve II and a connecting flange II, one side of the connecting flange I is connected with a low-speed end output flange of a main test gear box, and the other side of the connecting flange I is connected with the inner gear sleeve I; the first inner gear sleeve is connected with the outer gear shaft through crowned teeth, the outer gear shaft is connected with the second inner gear sleeve through crowned teeth, the second inner gear sleeve is connected with the second connecting flange, and the second connecting flange is connected with a low-speed end flange of the accompanying gear box. The side, close to the first connecting flange, of the first inner gear sleeve is connected with a baffle, and the side, close to the second inner gear sleeve, of the first inner gear sleeve is connected with a transparent cover. The side, close to the first inner gear sleeve, of the second inner gear sleeve is connected with a transparent cover, and the side, close to the second connecting flange, of the second inner gear sleeve is connected with a baffle. According to the utility model, the processing and assembling difficulty can be reduced, the universality is strong, and the manufacturing cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, in particular to a low-speed end coupling for testing an integrated wind power gearbox. Background Art

[0002] At present, the wind power gearbox test on the market generally uses a motor to connect the high-speed end of the main test gearbox, and then designs a connection tool at the low-speed end according to the structural form of the gearbox, connects the main test gearbox with the accompanying test gearbox, and connects the high-speed end of the accompanying test gearbox to the generator, and transmits the power to the main test motor to form an electric power closed loop. Among them, the connection tool between the main test gearbox and the accompanying test gearbox has structural forms such as connecting shaft box and drum gear coupling. Among them, the connecting shaft box has many parts, high design and manufacturing costs, and time-consuming and labor-intensive disassembly and adjustment. The use of drum gear coupling can compensate for various deviations (such as angular deviation, axial displacement, etc.) generated during installation and transmission, has low requirements for transmission chain alignment, and is easy to disassemble and assemble. However, the existing drum gear coupling used in wind power test benches is generally used for input and output in the form of shaft and locking disk connection. For the low-speed end, the flange connection is adopted. This coupling also needs to add an adapter flange, which is costly and troublesome to assemble and disassemble. The front-end integrated gearbox test requires the spindle bearing seat assembly to be tested. The spindle input end adopts a flange connection with a large diameter. It is not suitable to modify the existing coupling in terms of cost and installation.

[0003] The existing low-speed end drum gear coupling structure of the wind power test bench is as follows: Figure 1 As shown, it includes a connecting sleeve, a transition flange, an inner gear sleeve, a transparent cover, bolts, washers, and a dummy shaft assembly. This structure usually connects the high-speed end of the main test gearbox to the transition flange assembly, and then connects it to the connecting sleeve. The connecting sleeve is driven to rotate through a spline connection. The connecting sleeve and the inner gear sleeve, and the inner gear sleeve and the transition flange are connected through drum teeth, and the torque is transmitted to the transition flange. The two transparent covers are assembled on the inner gear sleeve with bolts and washers to achieve axial positioning including the connecting sleeve and the transition flange. The transition flange is connected to the dummy shaft assembly, and the dummy shaft assembly is connected to the low-speed end of the companion test gearbox. This drum gear coupling connects different types of wind power gearboxes, and different connecting flange assemblies and dummy shaft assemblies need to be prepared. The versatility is poor and the manufacturing cost is high. The connecting sleeve and the transition flange assembly at the output end of the main test gearbox are splined. During installation, more precise positioning is required to achieve installation. The dummy shaft assembly is large in size and difficult to assemble with the transition flange. Overall, many parts need to be adjusted during assembly, and the installation efficiency is low.

[0004] Therefore, in summary, it is necessary to provide a new low-speed end coupling to solve the shortcomings of the prior art. Utility Model Content

[0005] According to the technical problems raised above, a low-speed end coupling for testing an integrated wind turbine gearbox is provided. The technical means adopted by the utility model are as follows:

[0006] A low-speed end coupling for testing an integrated wind power gearbox, comprising: a connecting flange 1, an inner gear sleeve 1, a transparent cover, a baffle, an outer gear shaft, an inner gear sleeve 2 and a connecting flange 2, wherein one side of the connecting flange 1 is connected to a low-speed end output flange of a main test gearbox, and the other side is connected to an inner gear sleeve 1, the inner gear sleeve 1 is connected to the outer gear shaft via drum gears, the outer gear shaft is connected to the inner gear sleeve 2 via drum gears, the inner gear sleeve 2 is connected to the connecting flange 2, and the connecting flange 2 is connected to the low-speed end flange of a companion test gearbox;

[0007] A baffle is connected to one side of the inner gear sleeve 1 close to the connecting flange 1, and a transparent cover is connected to one side of the inner gear sleeve 1 close to the inner gear sleeve 2;

[0008] A transparent cover is connected to one side of the inner gear sleeve 2 close to the inner gear sleeve 1, and a baffle is connected to one side of the inner gear sleeve 2 close to the connecting flange 2.

[0009] Furthermore, the outer teeth of the outer gear shaft are two rows of drum-shaped teeth arranged at intervals, the inner gear sleeve 1 and the inner gear sleeve 2 are respectively connected with the two rows of drum-shaped teeth, and the transparent cover is located between the two rows of drum-shaped teeth.

[0010] Furthermore, the swing angle of the drum-shaped tooth is 2.5°.

[0011] Furthermore, the transparent cover is provided with four petals.

[0012] Furthermore, the connecting flange 1 is connected to the inner gear sleeve 1 by bolts.

[0013] Furthermore, the second inner gear sleeve is connected to the second connecting flange by bolts.

[0014] Furthermore, the inner gear sleeve 1 is connected to the transparent cover through bolt 1 and a washer, and the inner gear sleeve 1 is connected to the baffle through bolt 2.

[0015] Furthermore, the inner gear sleeve 2 is connected to the transparent cover through bolt 1 and a washer, and the inner gear sleeve 2 is connected to the baffle through bolt 2.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] 1. The low-speed end coupling for integrated wind power gearbox testing provided by the utility model has a drum-shaped tooth design of two internal gear sleeves + a double-row external gear shaft, which is easy to install. Compared with the drum-shaped tooth coupling used in the previous wind power test bench, the spline connection is removed, which reduces the difficulty of processing and assembly.

[0018] 2. The low-speed end coupling for integrated wind power gearbox testing provided by the utility model is designed with a drum tooth swing angle of 2.5°, which can allow a larger axial swing, greatly improving the bearing capacity of the drum tooth connection, and during installation, a relatively large axial offset can be allowed, which is convenient for centering and saves installation time.

[0019] 3. The low-speed end coupling for integrated wind power gearbox testing provided by the utility model has a transparent cover designed with four petals, which can achieve axial positioning while having low processing difficulty and convenient assembly and disassembly.

[0020] 4. The low-speed end coupling for integrated wind power gearbox testing provided by the utility model has a simple flange structure for connecting the main test gearbox and the companion test gearbox at both ends, low difficulty in centering during installation, convenient assembly and disassembly, strong versatility and low manufacturing cost.

[0021] Based on the above reasons, the utility model can be widely promoted in the fields of front-end integrated structure wind power gearbox testing and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is a structural schematic diagram of the low-speed end drum gear coupling of the existing wind power test bench.

[0024] Figure 2 The utility model is a schematic structural diagram of a low-speed end coupling for testing an integrated wind power gearbox.

[0025] In the figure: 1. Connecting flange 1; 2. Internal gear sleeve 1; 3. Bolt 1; 4. Washer; 5. Transparent cover; 6. Bolt 2; 7. Baffle; 8. External gear shaft; 9. Internal gear sleeve 2; 10. Connecting flange 2. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] A tooling used for low-speed integrated wind turbine gearbox testing, which is an important component for connecting the gearbox under test with the gearbox under test. It consists of an internal gear sleeve, bolts, washers, a transparent cover, bolts, baffles, and an external gear shaft, and is used in wind turbine gearbox testing.

[0028] In order to solve the existing problems, the utility model designs a drum-shaped tooth structure in which a double-row external gear shaft is meshed with two internal gear sleeves at the same time. The structure is simple, the number of parts is reduced, the manufacturing cost is low, and the assembly and disassembly efficiency is high. The swing angle of the drum-shaped tooth is 2.5°. According to calculations, this angle can solve the problems of low-speed end connection, over-positioning and misalignment during the test. Compared with the existing low-speed end drum-shaped tooth coupling connection technology of the wind power test bench, it has two fewer connecting flanges, is more streamlined in structure, and reduces two adjustments and installations. At the same time, a split end cover structure is adopted, so that the gearbox can be connected and fixed on the test bench quickly and effectively, which improves the installation and adjustment efficiency and quality.

[0029] The utility model discloses a low-speed end coupling for testing an integrated wind power gearbox, comprising a connecting flange 1, an inner gear sleeve 2, a bolt 3, a washer 4, a transparent cover 5, two bolts 6, a baffle 7, an outer gear shaft 8, a second inner gear sleeve 9, and a connecting flange 10.

[0030] like Figure 2 As shown, on the wind power test bench, the low-speed end output flange of the main test gearbox is directly connected to the connection flange 1 of the utility model, and the connection flange 1 is directly connected to the inner gear sleeve 2 of the drum gear coupling through bolts. The inner gear sleeve 2 is connected to the outer gear shaft 8, and the outer gear shaft 8 is connected to the inner gear sleeve 29 through drum gears. The inner gear sleeve 29 is bolted to the connection flange 210, and the connection flange 210 is connected to the low-speed end flange of the companion test gearbox to transmit power to the companion test gearbox. The transparent cover 5 and the baffle 7 are respectively assembled on both sides of the inner gear sleeve 12 and the inner gear sleeve 29 to fix the two inner gear sleeves axially. The right side of the inner gear sleeve 2 is connected to the transparent cover 5 through bolts 3 and washers 4, and the left side of the inner gear sleeve 2 is connected to the baffle 7 through bolts 26. The left side of the inner gear sleeve 29 is connected to the transparent cover 5 through bolts 3 and washers 4, and the right side of the inner gear sleeve 29 is connected to the baffle 7 through bolts 26.

[0031] The external gear shaft 8 is a double-row external gear shaft, and its external teeth are two rows of drum-shaped teeth arranged at intervals (two circles of drum-shaped teeth are arranged side by side at intervals along the axial direction), there is a gap between the two rows of drum-shaped teeth, the inner gear sleeve 1 2 and the inner gear sleeve 2 9 are arranged at intervals, the inner gear sleeve 1 2 and the inner gear sleeve 2 9 are respectively connected with the two rows of drum-shaped teeth, and the transparent cover 5 is located between the two rows of drum-shaped teeth. The right end surface of the inner gear sleeve 1 2 close to the inner gear sleeve 2 9 is connected to the transparent cover 5, and the left end surface of the inner gear sleeve 2 9 close to the inner gear sleeve 1 2 is connected to the transparent cover 5.

[0032] After calculation, the swing angle of the drum gear is designed to be 2.5°. This large swing angle design can allow a larger axial swing, greatly improving the load-bearing capacity of the drum gear connection. During installation, a relatively large axial offset can be allowed, which facilitates centering and saves installation time.

[0033] The transparent cover 5 is designed to have four petals, which can achieve positioning and is easy to install. There is no need to design a positioning boss on the external gear shaft 8, which is not convenient for processing the drum-shaped teeth, and there is no need to design a complex positioning flange component, which has many processed parts, complex production organization, and low assembly efficiency. The four-petal transparent cover 5 can achieve axial positioning while also achieving quick assembly and disassembly, and has a low manufacturing cost.

[0034] The connecting flange 1 and the connecting flange 2 10 have low manufacturing costs, and different flanges can be configured according to the high-speed end structures of gearboxes of different sizes without changing the size of the coupling, thus solving the problem of low versatility of the coupling.

[0035] The utility model is applied in the front-end integrated structure wind power gearbox test. Compared with the previous drum gear coupling, it has a simple structure, high versatility, low manufacturing cost, convenient installation, reduces tooling preparation time by more than 20%, and reduces tooling manufacturing cost by 30%.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A low-speed end coupling for testing an integrated wind turbine gearbox, characterized in that: include: A connecting flange 1 (1), an inner gear sleeve 1 (2), a transparent cover (5), a baffle (7), an outer gear shaft (8), an inner gear sleeve 2 (9) and a connecting flange 2 (10), wherein one side of the connecting flange 1 (1) is connected to the low-speed end output flange of the main test gearbox, and the other side is connected to the inner gear sleeve 1 (2), the inner gear sleeve 1 (2) is connected to the outer gear shaft (8) via drum gears, the outer gear shaft (8) is connected to the inner gear sleeve 2 (9) via drum gears, the inner gear sleeve 2 (9) is connected to the connecting flange 2 (10), and the connecting flange 2 (10) is connected to the low-speed end flange of the companion test gearbox; A baffle (7) is connected to the side of the inner gear sleeve 1 (2) close to the connecting flange 1 (1), and a transparent cover (5) is connected to the side of the inner gear sleeve 1 (2) close to the inner gear sleeve 2 (9); A transparent cover (5) is connected to the side of the inner gear sleeve 2 (9) close to the inner gear sleeve 1 (2), and a baffle (7) is connected to the side of the inner gear sleeve 2 (9) close to the connecting flange 2 (10).

2. The low-speed end coupling for testing an integrated wind turbine gearbox according to claim 1, characterized in that: The outer teeth of the outer gear shaft (8) are two rows of drum-shaped teeth arranged at intervals, the inner gear sleeve 1 (2) and the inner gear sleeve 2 (9) are respectively connected to the two rows of drum-shaped teeth, and the transparent cover (5) is located between the two rows of drum-shaped teeth.

3. The low-speed end coupling for testing an integrated wind turbine gearbox according to claim 1, characterized in that: The swing angle of the drum-shaped teeth is 2.5°.

4. The low-speed end coupling for testing an integrated wind turbine gearbox according to claim 1, characterized in that: The transparent cover (5) is provided with four petals.

5. The low-speed end coupling for testing an integrated wind turbine gearbox according to claim 1, characterized in that: The connecting flange 1 (1) is connected to the inner gear sleeve 1 (2) by bolts.

6. The low-speed end coupling for testing an integrated wind turbine gearbox according to claim 1, characterized in that: The inner gear sleeve 2 (9) is connected to the connecting flange 2 (10) by bolts.

7. The low-speed end coupling for testing an integrated wind turbine gearbox according to claim 1, characterized in that: The inner gear sleeve 1 (2) is connected to the transparent cover (5) via bolt 1 (3) and a washer (4), and the inner gear sleeve 1 (2) is connected to the baffle (7) via bolt 2 (6).

8. The low-speed end coupling for testing an integrated wind turbine gearbox according to claim 1, characterized in that: The second inner gear sleeve (9) is connected to the transparent cover (5) via a first bolt (3) and a washer (4), and the second inner gear sleeve (9) is connected to the baffle (7) via a second bolt (6).

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