JPH0618736U - Brake of wind turbine generator - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to prevent the stress of the brake pad from being transmitted to the caliper that supports the brake pad and prevent the caliper from being damaged. [Structure] A brake hole connected to a yaw is pressed through a brake pad inserted into a support hole connected to a tower to suppress yaw rotation, and a support hole in a brake of a wind turbine generator is formed in a circular shape and the brake is also formed. The pad has a cylindrical shape.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a brake (negative brake) of a wind turbine generator applied to wind power generation.

[0002]

[Prior art]

 FIG. 2 is an explanatory view of a brake (negative brake) of a conventional wind turbine power generator used for wind power generation. In the figure, the brake plate 02 of the present brake is connected to a yaw (YAW) bearing that rotates by incorporating a speed increaser, a generator and the like (not shown). The frequency of yaw rotation is low, and the brake plate 02 is constantly provided with a brake force by the disc spring 05. Only when the yaw is rotated, the hydraulic pressure exceeding the pressing force of the disc spring 05 is applied to the lower surface of the piston 06 to brake the brake. It is designed to release force and make a turn. The inside of the caliper 08 is configured to press the brake plate 02 by the piston 06, the disc spring 05, the brake pad 01, etc. The caliper 08 is supported by the support 07 via the guide pin 09.

The brake pad 01 is inserted into and supported by a hole formed in the support 07 facing the brake plate 02, and the stress generated by the braking action is directly transmitted from the brake pad 01 to the support 07. It is designed to be absorbed from the support 07 by the tower supporting the yaw. In the figure, reference numeral 03 is a spring stopper, 04 is a piston stopper, and 010 is an adjuster screw pin.

[0004]

[Problems to be solved by the device]

 In the brake of the conventional wind turbine generator as described above, the brake pad 01 is hit between the mating brake pad 01 and the hole of the support 07 due to the load due to the braking action, and is worn or worn. A gap is created between 01 and the hole of the support 07. When this gap increases, the surface pressure distribution acting on the end of the brake pad 01 becomes uneven, and when the brake plate 02 moves clockwise, peak surface pressure is generated on the brake pad 01 on the outer peripheral side of the brake plate 02. To do. On the other hand, when moving in the counterclockwise direction, peak surface pressure occurs on the inner peripheral side in the opposite direction. Then, the stress of the brake pad 01 is directly transmitted to the caliper 08 without being supported by the support 07, and the caliper 08 is damaged, causing oil leakage from the piston 06 rod and abnormal wear of the guide pin 09.

[0005]

[Means for Solving the Problems]

 The brake of the wind turbine generator according to the present invention is intended to solve the above-mentioned problem, and a brake plate connected to the yaw is pressed through a brake pad inserted in a hole of a support connected to the tower to press the yaw of the yaw. In a brake of a wind turbine power generator that suppresses turning, the support hole is formed in a circular shape and the brake pad is formed in a cylindrical shape.

[0006]

[Action]

 That is, in the brake of the wind turbine generator according to the present invention, the brake plate connected to the yaw is pressed through the brake pad inserted into the hole of the support connected to the tower to suppress the yaw rotation. The support holes in the brake are formed in a circular shape, and the shape of the brake pad is cylindrical, and the brake pad and the support hole are formed in a circular shape. The load acting between the brake pads is evened out and minimized so that abnormal wear does not occur between the brake pad and the support hole, and there is no gap between the brake pad and the support hole. This prevents the stress of the brake pad from being transmitted to the caliper that supports the brake pad.

[0007]

【Example】

 FIG. 1 is an explanatory view of a brake of a wind turbine generator according to an embodiment of the present invention. In the figure, the brake of the wind turbine generator according to the present embodiment is the brake (negative brake) of the wind turbine generator used for wind power generation, and the brake plate 2 has a built-in speed increaser, generator, etc. not shown. It is connected to the yaw (YAW) bearing that swivels. The frequency of yaw rotation is low, and the brake force is constantly applied to the brake plate 2 by the disc spring 5. Only when the yaw is rotated, a hydraulic pressure exceeding the pressing force of the disc spring 5 is applied to the lower surface of the piston 6 to cause the brake force. Is released to make a turn. The inside of the caliper 8 is configured to press the brake plate 2 with the piston 6, the disc spring 5, the brake pad 1, etc., and the caliper 8 is supported by the support 7 via the guide pin 9.

The brake pad 1 is inserted into and supported by a hole formed in the support 7 so as to face the brake plate 2, and the stress generated by the braking action is transmitted from the brake pad 1 directly to the support 7. It is designed to be absorbed from the support 7 to the tower supporting the yaw. In the drawing, reference numeral 3 is a spring stopper, 4 is a piston stopper, and 10 is an adjuster screw pin.

In a brake of such a wind turbine generator, the brake pad 1 and the hole of the support 7, which are fitted with each other, are hit by the load due to the braking action, causing fatigue, wear, and the like. A gap is formed between 1 and the hole of the support 7. If this gap increases, the stress of the surface pressure distribution brake pad 1 is directly transmitted to the caliper 8 without being transmitted to the support 7, and the caliper 8 is damaged, causing oil leakage from the piston 6 rod and abnormal wear of the guide pin 9. Therefore, in the brake of this wind turbine generator, the brake pad 1 has a cylindrical shape as shown in the figure, and is inserted into the hole of the support 7 that is circularly formed. The surface pressure acting on the ends is minimized, and the surface pressure distribution is made uniform to prevent abnormal wear from occurring, so that no gap is created between the brake pad 1 and the hole of the support 7. The hole of the support 7 may have an elliptical shape with a larger radius of curvature than the cylindrical brake pad 2. Also, when the caliper 8 is opened and reassembled at the time of periodic inspection, etc., the cylindrical brake pad 1 is rotated and mounted again so that the virgin surface comes into contact with the hole of the support 7 again. Is the same as the initial value. With these, the stress of the brake pad 1 due to the brake action is directly transmitted to the support 7 and absorbed by the tower, and is prevented from being transmitted from the brake pad 1 to the caliper 8, so that the caliper 8 is not damaged and the piston 6 rod is not damaged. Oil leakage and abnormal wear of the guide pin 9 do not occur.

[0010]

[Effect of device]

 The brake of the wind turbine generator according to the present invention is configured as described above, and the transmission of the stress of the brake pad to the caliper supporting the brake pad is prevented, so that the caliper is not damaged.

[Brief description of drawings]

1 (a) is a front view of a brake of a wind turbine generator according to an embodiment of the present invention, FIG. 1 (b) is a sectional view taken along line bb in FIG. 1 (a), and FIG. 1 (c). Is a plan view of the brake pad, and FIG.

2 (a) is a front view of a brake of a conventional wind turbine generator, FIG. 2 (b) is a sectional view taken along the line bb in FIG. 2 (a), and FIG. 2 (c) is a plan view of the brake pad. The figure and the same figure (d) are operation | movement explanatory drawings.

[Explanation of symbols]

 1 Brake Pad 2 Brake Plate 3 Spring Stopper 4 Piston Stopper 5 Disc Spring 6 Piston 7 Support 8 Caliper 9 Guide Pin 10 Adjustable Gripper

Claims (1)

[Scope of utility model registration request] 1. A brake of a wind turbine generator for suppressing a yaw turning by pressing a brake plate connected to a yaw through a brake pad inserted in a hole of a support connected to a tower, wherein the hole of the support is circular. A brake for a wind turbine generator characterized in that the brake pad is formed into a cylindrical shape.