CN219434577U

CN219434577U - Wind driven generator blade fatigue testing machine

Info

Publication number: CN219434577U
Application number: CN202320474219.XU
Authority: CN
Inventors: 张骁; 周恩涛; 章春珍; 张春平
Original assignee: Shenyang Dongdaweiye Hydraulic Pneumatic Equipment Co ltd
Current assignee: Shenyang Dongdaweiye Hydraulic Pneumatic Equipment Co ltd
Priority date: 2023-03-14
Filing date: 2023-03-14
Publication date: 2023-07-28
Anticipated expiration: 2033-03-14

Abstract

The utility model discloses a wind driven generator blade fatigue testing machine which comprises a clamping frame, wherein a combined frame is arranged at the top of the clamping frame, and a double-shaft driving motor is connected inside the combined frame through a supporting rod. The utility model provides a need rotate through biax driving motor can drive top pendulum and side pendulum, both can switch through the hydraulic stem, driving motor can only drive top pendulum or side pendulum at every turn like this and rotate, top pendulum drives wind turbine blade and waves direction fatigue test, side pendulum drives wind turbine blade and waves direction fatigue test, when carrying out waves direction fatigue test, fixed tooth can restrict the second gear, prevent vice connecting axle drive side pendulum and rotate, when side pendulum rotates, restriction plate frame can restrict spliced pole and top pendulum rotation, like this at the in-process of testing other experiments, other pendulum can not move, and then can not influence the experimental data of current experiment yet.

Description

Wind driven generator blade fatigue testing machine

Technical Field

The utility model relates to the field of blade fatigue testing, in particular to a wind driven generator blade fatigue testing machine.

Background

The wind driven generator blade is the most important part of the wind driven generator, the design of the wind driven generator blade directly influences the wind power conversion efficiency, and the wind driven generator mainly drives the wind driven generator blade to rotate by means of natural wind, so that a main shaft of the generator is driven to rotate, and electric energy is generated.

Because wind power generator blade just need resist the wind-force that various directions come when the design to in order to guarantee that the blade can use for a long time and need not change, just need to carry out fatigue test to the blade, so as to guarantee that wind power generator can satisfy long-time operation, firstly the fatigue test of blade is to test the blade constantly in the short time, in order to simulate the fatigue problem that the blade can appear in long-time operation in-process, in the test process, usually the root of blade is fixed first, the other end of blade carries out "swing direction fatigue test" and "swing direction fatigue test" in through special amplitude equipment, the principle of equipment can be simplified to be that the blade swings about and swings from top to bottom, and at present when carrying out these two kinds of experiments, its principle is the rotation of counter weight in different directions generally and lead to the blade to appear the skew in this direction, secondly these two kinds of equipment are in the centre gripping of blade on the whole unanimity, when two experimental processes are switched to same blade, just need to change two kinds of equipment, to carry out two kinds of equipment, to the field technician's trouble can be relatively to both kinds of equipment can be carried out to certain experiment that can be carried out to the relatively need to dismantle and mount and dismount.

Therefore, we propose a wind driven generator blade fatigue testing machine to solve the above problems.

Disclosure of Invention

The utility model aims to provide a wind driven generator blade fatigue testing machine for solving the problems in the background technology, and the technical scheme of the utility model aims to solve the technical problem that the prior art is too single, and provides a solution which is obviously different from the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a wind-driven generator blade fatigue testing machine, includes the centre gripping frame, the combination frame is installed at the centre gripping frame top, the combination frame is inside to be connected with biax driving motor through the bracing piece, two output of biax driving motor all are connected with the main connecting axle, the main connecting axle other end passes through the bearing with the combination frame and constitutes swivelling joint, first gear is installed to main connecting axle outer wall, first gear face one side is connected with fixed tooth through the bearing swivelling joint, fixed tooth middle part passes through trompil and the mutual swing joint of main connecting axle, the hydraulic stem is installed to combination frame inner wall both sides, the hydraulic stem output is connected with fixed tooth, the combination frame top is through the bearing swivelling joint spliced pole, spliced pole bottom fixedly connected with second bevel gear, first bevel gear is kept away from one side of fixed tooth and is installed first bevel gear, the one end fixedly connected with top pendulum that the second bevel gear was kept away from to the spliced pole, the centre gripping frame inner wall is connected with vice connecting axle through the bearing swivelling joint, vice connecting axle outer wall has the second gear, fixed tooth outer wall passes through fixed tooth fixed connection limiting plate frame, limiting plate and vice side connection through limiting plate, limiting plate and swing joint are connected with both ends through limiting plate surface.

In a further embodiment, the clamping frame comprises an upper fixing plate and a lower fixing plate, and the two fixing plates are fixedly clamped on the upper side and the lower side of the fan blade through screws and nuts.

In a further embodiment, the surface of the limiting plate frame is provided with holes which are movably connected with the connecting columns, the cross sections of the connecting columns are square, and the edges of the holes formed in the surface of the limiting plate frame are respectively of an arc-shaped structure and a square-shaped structure.

In a further embodiment, the main connecting shaft has a hexagonal cross section, and the first gear hole has a hexagonal structure.

In a further embodiment, two sides of the hole of the limiting plate frame are fixedly connected with sliding blocks, and the sliding blocks are mutually and slidably connected with sliding grooves at the top of the combined frame.

In a further embodiment, the second gear is in movable connection with the first gear and the fixed teeth.

Compared with the prior art, the utility model has the beneficial effects that:

according to the device, the double-shaft driving motor can drive the top pendulum and the side pendulum to rotate, the top pendulum and the side pendulum can be switched through the hydraulic rod, so that the driving motor can only drive the top pendulum or the side pendulum to rotate each time, the top pendulum drives the wind turbine blade to carry out a swing direction fatigue experiment, the side pendulum drives the wind turbine blade to carry out a swing direction fatigue experiment, the fixed teeth can limit the second gear to prevent the auxiliary connecting shaft from driving the side pendulum to rotate, when the side pendulum rotates, the limiting plate frame can limit the connecting column and the top pendulum to rotate, in the process of testing other experiments, the rest pendulum cannot move, experimental data of the current experiment are not affected, so that the device for testing the two fatigue experiments can be combined in one device, workers only need to complete one-time disassembly and assembly without switching the device, and in the process of carrying out two experiments respectively, the other counter weights cannot shake, and the device is quite convenient for a tester.

Drawings

FIG. 1 is a schematic view of a three-dimensional structure of a wind turbine blade fatigue tester.

FIG. 2 is a schematic diagram of the structure of the inside of the front view of the wind turbine blade fatigue tester.

Fig. 3 is a schematic top view of a combined frame in a wind turbine blade fatigue tester.

Fig. 4 is a schematic structural view of a first gear in a wind turbine blade fatigue tester.

FIG. 5 is a schematic view of a limiting plate frame in a wind turbine blade fatigue tester.

In the figure: 1. a clamping frame; 2. a combination frame; 3. a double-shaft driving motor; 4. a main connecting shaft; 5. a first gear; 6. a fixed tooth; 7. a hydraulic rod; 8. a side pendulum; 9. a first bevel gear; 10. a second bevel gear; 11. a connecting column; 12. a top pendulum; 13. a limiting plate frame; 14. a secondary connecting shaft; 15. and a second gear.

Detailed Description

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, in the wind turbine blade fatigue testing machine disclosed by the utility model, the wind turbine blade fatigue testing machine comprises a clamping frame 1, a combined frame 2 is installed at the top of the clamping frame 1, a double-shaft driving motor 3 is connected inside the combined frame 2 through a supporting rod, two output ends of the double-shaft driving motor 3 are both connected with a main connecting shaft 4, the other end of the main connecting shaft 4 is rotatably connected with the combined frame 2 through a bearing, a first gear 5 is installed on the outer wall of the main connecting shaft 4, one side of the end face of the first gear 5 is rotatably connected with a fixed gear 6 through a bearing, the middle part of the fixed gear 6 is movably connected with the main connecting shaft 4 through an opening, hydraulic rods 7 are installed on two sides of the inner wall of the combined frame 2, the output ends of the hydraulic rods 7 are connected with the fixed gear 6, the top of the combined frame 2 is rotatably connected with a connecting column 11 through a bearing, the bottom of the connecting column 11 is fixedly connected with a second bevel gear 10, one side of the first gear 5 far away from the fixed gear 6 is provided with a first bevel gear 9, one end of the connecting column 11 far from the second bevel gear 10 is fixedly connected with a top 12 through a fixed hammer, one side of the connecting column 12 is fixedly connected with a limiting plate 14 through a bearing, the inner wall of the fixed gear 1 is fixedly connected with the side of the oscillating bar 14 through the oscillating bar is fixedly connected with the oscillating bar 13, and the side of the oscillating bar is fixedly connected with the oscillating bar 13 through the oscillating bar 13.

Example 1

Referring to fig. 1-5, in an embodiment of the present utility model, a fatigue testing machine for a wind turbine blade, the clamping frame 1 includes an upper fixing plate and a lower fixing plate, the two fixing plates are fixedly clamped on the upper side and the lower side of the wind turbine blade through screws and nuts, the clamping frame 1 is attached to the upper side and the lower side of the blade through the two fixing plates, wood with arc grooves is required to be used as a space between the fixing plates and the blade, and the two fixing plates are attached to the two sides of the blade through the screw nuts.

Example 2

Referring to fig. 1 to 5, the difference from embodiment 1 is that: the limiting plate frame 13 surface is offered and is connected with the hole of spliced pole 11 mutual swing joint, spliced pole 11 cross section is square, the hole edge of limiting plate frame 13 surface seting up is arc structure and square structure respectively, and the hole at limiting plate frame 13 center is the bar structure, and the edge of one side is semi-circular structure, and the opposite side is square structure of right angle, when spliced pole 11 and right angle limit mutual contact, spliced pole 11 can not rotate, and when spliced pole 11 contacted with the semicircle limit, spliced pole 11 can normally rotate, just accomplished the self-locking function to spliced pole 11 structurally through limiting plate frame 13, prevented spliced pole 11's rotation.

The two sides of the hole of the limiting plate frame 13 are fixedly connected with sliding blocks, the sliding blocks are in sliding connection with the sliding grooves at the top of the combined frame 2, the limiting plate frame 13 can be in sliding connection with the combined frame 2 through the sliding blocks, and therefore the sliding of the limiting plate frame 13 is more stable.

Example 3

Referring to fig. 1 to 5, the difference from embodiment 1 is that: the main connecting shaft 4 is of a hexagonal structure in cross section, the holes of the first gears 5 are of a hexagonal structure, the main connecting shaft 4 can drive the first gears 5 matched with the main connecting shaft to rotate through the special hexagonal structure, and in order to avoid driving the fixed teeth 6 to rotate, the holes of the central holes of the fixed teeth 6 cannot be in contact with the first gears 5.

The second gear 15 is movably connected with the first gear 5 and the fixed teeth 6, the first gear 5 can rotate along with the main connecting shaft 4, the fixed teeth 6 are connected with the telescopic ends of the hydraulic rods 7 and cannot rotate, and when the fixed teeth 6 are meshed with the second gear 15, the second gear 15 can be prevented from rotating, so that the self-locking effect is achieved.

The double-shaft driving motor 3 adopts a YZR-112-6 double-shaft motor.

The working principle of the utility model is as follows:

firstly, a clamping frame 1 is clamped at one end of a wind driven generator blade, the initial position is assumed to be in a state in the drawing, a first bevel gear 9 and a second bevel gear 10 are meshed with each other, a double-shaft driving motor 3 is started to drive a main connecting shaft 4 to rotate at the moment, the main connecting shaft 4 drives a first gear 5 and the first bevel gear 9 to rotate, as a fixed tooth 6 is connected with the first gear 5 through a bearing, and meanwhile, the fixed tooth 6 is connected with the telescopic end of a hydraulic rod 7, so that the fixed tooth 6 cannot rotate, in the state, the fixed tooth 6 is kept in contact with a second gear 15, at the moment, the second gear 15 cannot rotate, a secondary connecting shaft 14 and a side pendulum 8 cannot rotate, so that the side pendulum 8 is limited, the first bevel gear 9 can drive a connecting column 11 to rotate through meshing with the second bevel gear 10, and the connecting column 11 drives a top pendulum 12 to rotate, and the top pendulum 12 rotates to enable the whole wind driven generator blade to transversely swing left and right;

when the wind driven generator blade is required to swing up and down, the double-shaft driving motor 3 is stopped to rotate, the left and right groups of hydraulic rods 7 are completely shortened, at the moment, the hydraulic rods 7 respectively drive the first gear 5, the fixed teeth 6 and the first bevel gears 9 to move along the two sides of the combined frame 2 in the direction of the main connecting shaft 4, at the moment, the fixed teeth 6 and the second gear 15 are separated from each other, the first gear 5 and the second gear 15 are kept in an engaged state, the first bevel gears 9 and the second bevel gears 10 are separated from each other at the moment, so that the second bevel gears 10 and the top pendulum 12 cannot rotate, the fixed teeth 6 can drive the limiting plate frame 13 to transversely move together through the connecting rod, the right-angle side of the limiting plate frame 13, namely one side of the square edge is contacted with the connecting column 11, the connecting column 11 cannot rotate, the top pendulum 12 can keep a stable state, at the moment, the double-shaft driving motor 3 is started to rotate through the first gear 5, the first gear 5 is driven to rotate through the engagement, the second gear 15 is driven to rotate through the side of the auxiliary connecting shaft 14, the side of the second gear 15 drives the side of the pendulum 8 to rotate, and the side of the fan 8 can rotate through the side of the auxiliary connecting shaft 8.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. A wind-driven generator blade fatigue testing machine is characterized in that: including centre gripping frame (1), combination frame (2) are installed at centre gripping frame (1) top, combination frame (2) inside is even there is biax driving motor (3) through the bracing piece, biax driving motor (3) two output all are connected with main connecting axle (4), main connecting axle (4) other end and combination frame (2) constitute through the bearing and rotate and be connected, first gear (5) are installed to main connecting axle (4) outer wall, first gear (5) terminal surface one side is connected with fixed tooth (6) through the bearing rotation, fixed tooth (6) middle part is through trompil and main connecting axle (4) looks swing joint, hydraulic stem (7) are installed to combination frame (2) inner wall both sides, hydraulic stem (7) output is connected with fixed tooth (6), combination frame (2) top is through bearing rotation spliced pole (11), spliced pole (11) bottom fixedly connected with second bevel gear (10), first gear (5) are kept away from one side of fixed tooth (6) and are installed first bevel gear (9), second bevel gear (11) are kept away from fixed connection (12) and are connected with one end (12) through bearing top swing joint (14), the secondary connection shaft (14) outer wall is provided with a second gear (15), the fixed tooth (6) outer wall is fixedly connected with a limiting plate frame (13) through a connecting rod, the surface of the limiting plate frame (13) is movably connected with a connection column (11) through an opening, and two ends of the secondary connection shaft (14) are connected with side pendulum weights (8).

2. The wind turbine blade fatigue testing machine according to claim 1, wherein: the clamping frame (1) comprises an upper fixing plate and a lower fixing plate, and the two fixing plates are fixedly clamped on the upper side and the lower side of the fan blade through screws and nuts.

3. The wind turbine blade fatigue testing machine according to claim 1, wherein: holes which are movably connected with the connecting columns (11) are formed in the surface of the limiting plate frame (13), the cross section of the connecting columns (11) is square, and the edges of the holes formed in the surface of the limiting plate frame (13) are respectively of an arc-shaped structure and a square structure.

4. The wind turbine blade fatigue testing machine according to claim 1, wherein: the main connecting shaft (4) is of a hexagonal structure in cross section, and the holes of the first gear (5) are of a hexagonal structure.

5. The wind turbine blade fatigue testing machine according to claim 1, wherein: two sides of the hole of the limiting plate frame (13) are fixedly connected with sliding blocks, and the sliding blocks are connected with sliding grooves at the top of the combined frame (2) in a sliding manner.

6. The wind turbine blade fatigue testing machine according to claim 1, wherein: the second gear (15) is movably connected with the first gear (5) and the fixed teeth (6).