CN202030464U - Self-provided crane of wind generator - Google Patents

Abstract

The utility model discloses a self-provided crane for a wind energy generator, which comprises a crane base, on which a slewing support is arranged, and the slewing support is connected in transmission with a slewing drive device, and a column is fixedly connected above the slewing support, and the column The boom is hinged on the upper end, and a boom lifting device is hinged between the column and the boom; a winch is fixedly installed on the column, and one end of the wire rope is wound around the guide wheel set on the boom. On the hoist, the other end of the wire rope is fixedly connected to the lifting hook. The self-contained crane can facilitate the maintenance of the wind energy generating set, and is easy to operate and safe in use, and is widely applicable to self-provided hoisting of the wind energy generating set.

Description

Wind energy generator self-provided crane

technical field

The utility model relates to wind energy generating equipment, in particular to a crane equipped on the wind energy generator. the

Background technique

With the continuous enhancement of people's awareness of low-carbon and environmental protection, the development and utilization of clean and environmentally friendly energy has been paid more and more attention by countries all over the world. A wind energy generator is a device that can convert the inexhaustible, clean, and environmentally friendly wind energy from nature into the electrical energy needed for people's production and life. In order to maximize the working efficiency of wind energy generators, the site selection of wind farms in actual production is often concentrated in areas with good natural ventilation conditions and strong winds, such as plains, mountains, tidal flats, and seas. Because the wind power generators in practical applications are all installed on the top of the wind power generation tower with a height of 50-100 meters or more, when the generators need to be regularly maintained or repaired when the unit fails, the wind power on land The generator unit needs to use a large mobile crane to complete. On the one hand, the large crane has the defects of poor rigidity and low safety factor because of the high lifting bracket. The transportation of heavy cranes is extremely difficult, and there is a defect that it is inconvenient to use; and when the wind turbines in the mountains, beaches and seas are regularly maintained or repaired when the units fail, the large mobile cranes are not If you can't enter the area, you will be beyond reach and powerless, which makes it very difficult to maintain and repair the wind power generators in this area during normal operation, thus forming a problem that restricts the development of wind power generation in this area. Bottlenecks in the development of mountains, tidal flats and seas. the

Utility model content

Aiming at the deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a self-contained crane for wind energy generators which is convenient for the maintenance of the wind energy generators, easy to operate and safe to use. the

In order to solve the above-mentioned technical problems, the self-provided crane of the wind energy generator of the present invention includes a crane base, on which a slewing bearing is arranged, and the slewing bearing is connected to the slewing driving device in transmission, and a column is fixedly connected above the slewing bearing, The boom is hinged on the upper end of the column, and a boom lifting device is hinged between the column and the boom; a winch is fixedly installed on the column, and one end of the wire rope goes around the guide wheel set on the boom Wound on the hoist, the other end of the wire rope is fixedly connected to the lifting hook. the

The boom has at least two telescopic arms, and telescopic driving devices are connected between the telescopic arms at all levels. the

The boom has two telescopic arms that are slid and socketed with each other. the

The telescopic driving device connected between the telescopic arms is a telescopic oil cylinder. the

The rotary driving device is a hydraulic motor. the

The boom lifting device is a lifting oil cylinder. the

The hoisting driving device of the hoisting machine is a hoisting hydraulic motor. the

After adopting the above structure, the crane can be directly installed on the generator set at the top of the wind power generation tower through the crane base, which not only greatly shortens the height of the lifting bracket, but also enables the crane to obtain excellent rigidity performance and has a safety factor in use It has the advantages of high quality, and completely avoids the defects of difficult transportation, severely limited scope of use, and inconvenient operation caused by the large mobile crane used in the past. It has the advantages of no need for transportation and a wide range of use, which completely solves the constraints The bottleneck in the development of wind power generation facilities in mountains, tidal flats and seas makes the maintenance and repair of wind power generators in mountains, tidal flats and seas extremely convenient and efficient. Since the slewing bearing is provided on the base of the crane, and the slewing bearing is set to be connected with the slewing drive, the slewing bearing can rotate within 360 degrees in the circumferential direction under the action of the slewing drive, so that the crane can be turned Positioning and lifting at any angle within 360 degrees in the circumferential direction obviously has the advantages of easy operation and convenient use. And because there is a boom lifting device hinged between the column and the boom, so that the boom can be lifted in the vertical plane according to the actual lifting needs of the work, which not only ensures that the lifting hook can be accurately It can be rotated to the corresponding position of the hoisted object in the horizontal plane, and the hoisted object can be accurately hoisted to the installation position in the vertical plane. It also has the advantages of easy operation and convenient use in practical applications. Also because the wire rope dragged by the hoist is used for winding, the pulling of the lifting hook is realized, that is, the hoisting of the object to be hoisted is realized, and it has the advantages of reasonable structure and convenient use. the

Description of drawings

The wind energy generator self-provided crane of the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments. the

Fig. 1 is a working structure schematic diagram of a specific embodiment of the wind energy generator self-provided crane of the present utility model;

Fig. 2 is a sectional view along the A-A direction in the structure shown in Fig. 1;

Fig. 3 is a cross-sectional view along B-B direction of the structure shown in Fig. 1 .

In the figure, 1-crane base, 2-slewing bearing, 3-column, 4-boom lifting device, 5-lifting arm, 6-telescopic driving device, 7-movable arm, 8-lifting hook, 9 -wire rope, 10-winch, 11-winch driving device, 12-worm shaft, 13-revolving driving device, 14-guide wheel. the

Detailed ways

In the self-contained cranes for wind energy generators shown in Figure 1, Figure 2 and Figure 3, the base 1 of the crane is directly installed in the cabin of the wind energy generator, and the slewing bearing 2 is fixedly installed on the base 1 of the crane. The slewing bearing, the slewing bearing 2 is connected to the slewing drive 13 through the transmission of the worm shaft 12 on it. The slewing drive 13 adopts a hydraulic motor. A column 3 is fixedly connected above the slewing support 2, and a boom 5 is hinged on the upper end of the column 3. The boom 5 is slidably connected to the movable arm 7. The telescopic drive device 6 is a telescopic cylinder. One end of the telescopic cylinder is Hinged on the boom 5 inner wall, the other end of the telescopic oil cylinder is hinged with the movable arm 7 inner wall, so that the telescopic drive device 6 can drive the movable arm 7 to slide along the boom 5 inner wall when working. The winch 10 is installed on the outside of the column 3, and the winch 10 can also be installed in the inside of the column or in a place convenient for installation in the wind energy generator cabin. Adopt winch hydraulic motor, wire rope 9 straddles each guide wheel 14 on the boom 5 and movable arm 7, and its one end is wound on the winch 10, and the other end is connected with lifting hook 8. A boom lifting device 4 is hinged between the column 3 and the boom 5 hinged on the upper end of the column 3. The boom lifting device 4 also adopts an oil cylinder, and the boom 5 moves vertically under the action of the oil cylinder. The free lifting operation within the range of -15 degrees to 70 degrees in the plane, after setting the above structure, the height of the whole crane lifting bracket is approximately equal to the sum of the height of the crane base 1, slewing bearing 2 and column 3, and the height of the lifting bracket is much smaller than The height of the lifting bracket of the large mobile hoisting crane used on land not only enables the crane to obtain good rigidity, but also has the advantage of high safety factor during use, and avoids the inconvenience of the original large mobile hoisting crane. The transportation that produces is not easy, uses the defective of inconvenient, has the advantage that does not need to transport, easy to use. the

When in use, the self-provided crane of the wind energy generator fixedly installed in the wind power generator cabin, according to the actual position of the object to be hoisted, starts the slewing drive device 13 to drive the slewing bearing 2 to rotate to the corresponding position of the object to be hoisted, and starts The telescopic oil cylinder of the telescopic drive device 6 makes the movable arm 7 stretch out from the boom 5, starts the lifting cylinder of the boom lifting device 4 to adjust the relative angle between the boom 5 and the column 3, and can move the two cylinders alternately. Adjust the lifting hook 8 to the top of the object to be hoisted, start the hoist 10 and lower the hoisting hook 8 to complete the hooking of the object to be hoisted, reverse the hoist 10 to lift the object to be hoisted, and start the rotation of the slewing drive 13 again The hydraulic motor, the lifting oil cylinder of the boom lifting device 4 and the telescopic oil cylinder of the telescopic drive device 6 realize the accurate hoisting of the object to be hoisted to the target position. the

The above mentioned are only some preferred implementations of the self-provided crane for the wind energy generator of the present invention, but are not limited thereto, and some changes and improvements can be made without violating the basic principles of the present invention. For example, the telescopic driving device connected between the telescopic arms is not limited to an oil cylinder, but also a chain transmission device composed of a sprocket and a chain; the rotary driving device that drives the slewing bearing to rotate is not limited to a hydraulic motor, but also Commonly used power devices such as motors; the hoisting drive device for driving the winch is not limited to a hydraulic motor, but can also be commonly used power devices such as motors, and so on. As long as any modification of similar structure is made on the basis of the utility model, it is deemed to fall into the protection scope of the utility model. the

Claims (7)

1. a wind-driven generator is provided crane for oneself, comprise crane base (1), it is characterized in that: crane base (1) is provided with pivoting support (2), this pivoting support (2) is in transmission connection mutually with device for revolving and driving (13), connecting column (3) in this pivoting support (2) upper fixed, hinged crane arm (5) is hinged with crane arm lifting apparatus (4) between this column (3) and the crane arm (5) in column (3) upper end; Also fixedly mounting winch (10) on described column (3), (9) one of steel ropes are walked around the last set guide wheel (14) of crane arm (5) and are wound on the winch (10), and steel rope (9) other end captive joint load hook (8).

2. wind-driven generator according to claim 1 is provided crane for oneself, it is characterized in that: described crane arm (5) has two joint telescopic arms at least, is connected with retractable driving device (6) between the telescopic booms at different levels.

3. wind-driven generator according to claim 2 is provided crane for oneself, it is characterized in that: described crane arm (5) has the telescopic arms of the mutual slip socket of two joints.

4. provide crane for oneself according to claim 2 or 3 described wind-driven generators, it is characterized in that: connect retractable driving device (6) between the described telescopic boom (5) and be telescopic oil cylinder.

5. wind-driven generator according to claim 1 is provided crane for oneself, it is characterized in that: described device for revolving and driving (13) is a HM Hydraulic Motor.

6. wind-driven generator according to claim 1 is provided crane for oneself, it is characterized in that: described crane arm lifting apparatus (4) is the lifting oil cylinder.

7. wind-driven generator according to claim 1 is provided crane for oneself, it is characterized in that: the elevator actuating device (11) of described winch (10) is the elevator HM Hydraulic Motor.

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