CN105947890B - A kind of deflection mechanism of wind-driven generator leaf suspender - Google Patents

Abstract

The invention discloses a yaw mechanism of a blade hanger for a wind power generator. The yaw mechanism of a blade hanger for a wind blade generator according to the invention is used for installing and dismounting the blade hanger in a high-altitude unmanned state When the wind blade is in motion, the attitude of the auxiliary blade is adjusted; the overall structure is simple, easy to use, high degree of automation, and does not require manual intervention; compared with the existing deflection mechanism, it is not easy to get stuck due to the deflection of the center of gravity of the hanging object The phenomenon. It includes a track, a mobile trolley, a screw, a motor, a reducer and a nut. The nut is sleeved on the horizontally arranged screw mandrel, the screw mandrel passes through the mobile trolley, and the screw mandrel is fixedly connected to the mobile trolley through the nut; the mobile trolley There is a roller at the bottom, the roller is placed on the track, the track is parallel to the axial direction of the screw; the output end of the motor is connected to the reducer, and the screw passes through the hole on the output shaft of the reducer, and is 90 degrees to the output shaft of the reducer Setting; the reducer drives the screw to rotate, and the moving car moves linearly along the track.

Description

A deflection mechanism of a blade spreader for a wind power generator

technical field

The invention relates to a yaw mechanism, in particular to a yaw mechanism for assisting the adjustment of the attitude of the blade when the blade spreader is installed and removed in the high-altitude unmanned state, and belongs to the field of auxiliary tools for the blade spreader .

Background technique

There are two main ways to lift the wind blades, one is integral lifting suitable for small wind turbine blades hoisting, and the other is split stepwise lifting suitable for large wind turbine blades hoisting.

Since wind turbines are mostly installed in land or ocean areas with abundant wind resources, relatively large wind blades are mostly used at sea, and it is extremely inconvenient to lift or disassemble the wind blades. With the gradual increase of wind turbines and the further increase of installed capacity, there are also different technical requirements for the hoisting process and spreaders for lifting wind blades.

At present, most of the wind blade spreaders used in China are purchased from foreign products, and there are more or less inconveniences in the use process. The installation of wind turbines needs to adapt to the natural environment and use reliable hoisting equipment and spreaders. Every requirement is very strict. Among them, the wind blade spreader is an indispensable key equipment, whether it is lifting or removing wind blades or The air attitude adjustment of the wind blade needs to be completed by the wind blade spreader, so its role in the safe lifting of the wind blade is very important. The localization of wind blade spreader can reduce the cost and expand its applicability.

For example, the application number is: CN201410143354.1, and the invention name is a Chinese invention patent for a split-type installation process of offshore wind turbines, which discloses a process step for split-type installation of offshore wind turbines: first, the offshore wind power installation platform is positioned and raised to the wind turbine installation site ; Assemble the wind blades and the hub on the offshore wind power installation platform; install the internal accessories of the tower after the wind wheel is assembled; after installing the internal accessories, hoist and install the three-section tower on the jacket; hoist the nacelle to the top of the tower The upper part; the whole impeller is turned over and hoisted; the whole impeller is hoisted in place. The present invention solves the problem of separate installation of offshore and deep-sea wind power sites, cancels the need to install the whole offshore wind power equipment on the wharf first, and then transports the whole machine to the installation site for secondary installation; greatly reduces construction costs, reduces It has the advantages of simplifying the construction process, greatly reducing safety risks, and speeding up the efficiency of offshore wind turbine installation.

However, in the split-type installation process of the fan, the specific structure of the fan blade spreader is not mentioned.

Contents of the invention

The object of the present invention is to provide a yaw mechanism of a blade spreader for a wind-driven generator, which is used to assist the adjustment of the attitude of the wind blade when the wind blade spreader is installed or disassembled in a high-altitude unmanned state; The support assembly and the yaw mechanism are fixedly connected to jointly realize the function of adjusting the attitude of the fan blade, thereby effectively solving the above-mentioned problems in the prior art.

The purpose of the present invention is achieved through the following technical solutions: a yaw mechanism for a fan blade hanger for a fan blade generator, including a track, a moving trolley, a screw, a motor, a reducer and a nut, and the nut is sleeved on a laterally arranged On the screw mandrel, the screw mandrel passes through the mobile trolley, and the screw mandrel is fixedly connected with the mobile trolley through the nut; the bottom of the mobile trolley is provided with rollers, and the rollers are placed on the track, and the track is parallel to the axial direction of the screw mandrel; the output of the motor The end is connected with the reducer, and the screw passes through the hole on the output shaft of the reducer, and is set at 90 degrees to the output shaft of the reducer; the reducer drives the screw to rotate, and the moving car moves linearly along the track.

As a preferred manner, it also includes a main beam of the spreader that cooperates with the yaw mechanism, and the track is horizontally installed on the main beam of the spreader.

As a preferred manner, bearing seats are provided at both ends of the screw rod, and the bearing seats are fixed to the main beam of the spreader.

As a preferred mode, it also includes a spreader bracket assembly matched with the yaw mechanism, the spreader bracket assembly is provided with a hinge hole, and the mobile trolley and the spreader bracket assembly are hingedly connected through the hinge hole through a screw; the spreader bracket Rotation of the assembly around the hinge hole creates the yaw motion of the spreader bracket assembly.

As a preferred manner, the bracket assembly of the spreader is provided with a fixed pulley and a guide groove, the fixed pulley is fixed on the main beam, and the fixed pulley can move in the guide groove.

The working principle of the present invention is as follows:

When it is necessary to adjust the angle of the fan blade, according to the required angle, make the motor rotate forward or reverse, thereby driving the screw to rotate, and the nut on the screw can only drive the moving car to do linear motion due to the limitation of the moving car. This coupling through the hinge holes drives the frame assembly to move with the dolly. Since the fixed pulley can only rotate but not move, due to the effect of the guide groove and the hinge hole on the bracket assembly, it will rotate when the bracket assembly moves, thereby achieving the purpose of adjusting the attitude of the fan blades fixed on the bracket assembly.

Compared with the prior art, the present invention has the beneficial effects: the yaw mechanism of the fan blade spreader for the wind blade generator in the present invention is used for assisting The posture of the fan blades is adjusted; the overall structure is simple, easy to use, high degree of automation, and does not require manual intervention; compared with the existing deflection mechanism, it is not easy to get stuck due to the deflection of the center of gravity of the hanging object.

Description of drawings

Fig. 1 is a schematic diagram of the positions of the yaw mechanism and the spreader bracket assembly of the present invention.

Fig. 2 is a schematic diagram of the position of the yaw mechanism and the main beam of the spreader according to the present invention.

Fig. 3 is a schematic cross-sectional structure diagram of the yaw mechanism of the present invention.

Among them: yaw mechanism-101, spreader bracket assembly-102, spreader main beam-103, fan blade-104, track-1, mobile trolley-2, screw rod-3, motor-4, reducer-5, Nut-6, bearing seat-7, roller-8, fixed pulley-10, guide groove-11, hinge hole-12.

detailed description

In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

All features disclosed in this specification, or steps in all disclosed methods or processes, except for mutually exclusive characteristics and/or steps, can be combined in any way, unless otherwise stated, they can be used by other equivalent or similar Instead, each feature is intended to be replaced by alternative features, that is, each feature is only one embodiment of a series of equivalent or similar features unless stated otherwise.

Example:

As shown in Figures 1-3, the deflection mechanism of the fan blade spreader for the fan blade generator according to the present invention needs to cooperate with the spreader bracket assembly 102 of the wind blade spreader and the main beam 103 of the spreader when in use, and the deflection The supporting body of the mechanism 101 is the main beam 103 of the spreader, and the blades 104 are fixed on the bracket assembly 102 of the spreader.

The yaw mechanism 101 includes a rail 1, a moving trolley 2, a screw 3, a motor 4, a reducer 5 and a nut 6, the nut 6 is sleeved on the screw 3 arranged horizontally, and the two ends of the screw 3 are provided with bearing seats 7 , The bearing block 7 is fixed with the main beam 103 of the spreader. The screw mandrel 3 passes through the mobile trolley 2, and the screw mandrel 3 is fixedly connected with the mobile trolley 2 by the nut 6; The axes are parallel; the track 1 is installed horizontally on the main beam 103 of the spreader. The output end of the motor 4 is connected with the reducer 5, the screw rod 3 passes through the hole on the output shaft of the reducer 5, and is set at 90 degrees with the output shaft of the reducer 5; the reducer 5 drives the screw rod 3 to rotate, and the track 1 limits Therefore, the moving car can only move in a straight line along track 1.

The spreader bracket assembly 102 is provided with a fixed pulley 10 , a guide groove 11 and a hinge hole 12 , and the mobile trolley 2 and the spreader bracket assembly 102 are hingedly connected through the hinge hole 12 through a screw. When the motor 4 drives the speed reducer 5 to move, the speed reducer 5 drives the combination of the screw mandrel and the nut to rotate, and the nut will drive the moving car 2 to do linear motion. The guide groove 11 provided on the bracket assembly 102 slides along the fixed pulley 10 , and the spreader bracket assembly 102 rotates around the hinge hole 12 to form the yaw motion of the spreader bracket assembly 102 . The fixed pulley 10 is fixed on the main beam 103, and the fixed pulley 10 can move in the guide groove 11, thereby realizing the purpose of adjusting the attitude of the fan blade.

Fan blade installation: first place the fan blade on the hoisting platform on the ground to ensure its basic balance; lift the fan blade sling, and do not install the fan blade sling at this time; move the fan blade sling above the fan blade and slowly lower it The fan blade spreader reaches the fan blade clamp on the bracket assembly at both ends and stops after contacting the fan blade; manually suspend the sling on the lock pin mechanism; start the sling tightening mechanism to tighten the sling until it reaches the preset tension value and then stop; Lift the fan blade spreader, and the fan blade is lifted together with the sling at this time; move the fan blade to the installation position of the rotating hub, start the yaw mechanism to adjust the alignment of the fan blade and the mounting hole of the rotating hub; fasten the rotation hub and the fan blade After the bolts are installed, the lock pin mechanism at one end of the two sets of bracket components works, the pin nut retracts, and the sling is automatically released by gravity; after confirming that the sling is released, the blade spreader can be removed to complete the installation of the blade.

Fan blade removal: Install the manipulator on the lower bracket when operating on the ground, and confirm that the pin nut at the end of the sling tightening mechanism on the bracket is in the retracted state; hang the hanging rings at both ends of the fan sling on the bracket component Tension sensor The end pin nut and the manipulator hanging ring holder; lift the blade spreader and lower the spreader from above the blade until the blade clamps at both ends of the blade spreader contact with the blade and stop. This process can be adjusted by the yaw mechanism Fitting angle between the fan blade and the fixture; the action of the manipulator, the hanging strap ring on the ring holder is sent into the working position of the locking mechanism end of the strap tightening mechanism on the bracket assembly; the bolt nut is stretched out after the ring is in place; The tightening mechanism tightens the sling until it reaches the preset tension value and then stops; loosens the connecting bolts between the blade and the hub, then lowers the blade spreader, and stops when the blade is placed on the blade lifting platform on the ground; loosen the bracket After the locking mechanism at both ends releases the blade sling, the blade sling can be removed to complete a blade disassembly.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (4)

1. a kind of deflection mechanism of wind-driven generator leaf suspender, it is characterised in that：Including track (1), moving cart (2), silk Bar (3), motor (4), reductor (5) and nut (6), nut (6) are sheathed on the laterally screw mandrel (3) of setting, and screw mandrel (3) is passed through Moving cart (2), and screw mandrel (3) is fixedly connected by nut (6) with moving cart (2)；The bottom of the moving cart (2) Provided with roller (8), roller (8) is placed on track (1), and track (1) is axially in parallel with screw mandrel (3)；The output end of motor (4) with Reductor (5) is connected, and screw mandrel (3) is set through the hole on reductor (5) output shaft with the output shaft of reductor (5) into 90 degree Put；Reductor (5) drives screw mandrel (3) to rotate, and moving cart (2) moves along a straight line along track (1)；Also include suspender support group Part (102), the suspender support component (102) is provided with pan (12), moving cart (2) and suspender support component (102) It is articulated and connected by screw rod through pan (12)；Suspender support component (102) around hinge hole (12) place rotates to form suspender branch The beat motion of frame component (102).

2. a kind of deflection mechanism of wind-driven generator leaf suspender as claimed in claim 1, it is characterised in that：Also include with it is inclined The suspender main beam (103) that swinging mechanism (101) coordinates, track (1) is horizontally installed on suspender main beam (103).

3. a kind of deflection mechanism of wind-driven generator leaf suspender as claimed in claim 2, it is characterised in that：Screw mandrel (3) Two ends are provided with bearing block (7), and bearing block (7) is fixed with suspender main beam (103).

4. a kind of deflection mechanism of wind-driven generator leaf suspender as claimed in claim 3, it is characterised in that：Suspender support group Part (102) is provided with fixed block (10) and guide groove (11), and fixed block (10) is fixed on main beam (103), and fixed Pulley (10) can be moved in guide groove (11).