KR102194988B1 - Brake apparatus - Google Patents

Abstract

The present invention relates to a braking device, the braking device comprising: a rotation shaft for transmitting rotational force; A rotation gear fixed to the rotation shaft; A plurality of braking gears meshed with the rotating gears; And a control member configured to control rotation of the plurality of brake gears, respectively, the control member comprising: a cylinder connected to the brake gear; And a control means for controlling the cylinder, wherein the control means comprises: a first supply pipe for injecting air into a space where one side of the piston of the cylinder contacts; A first return pipe for discharging air from a space where one side of the piston contacts; A second supply pipe for injecting air into a space where the other side of the piston of the cylinder contacts; A second return pipe for discharging air from a space where the other side of the piston contacts; A connection pipe to which the first and second collection pipes are respectively connected; A selection pipe in communication with the connection pipe; And a solenoid valve that connects or blocks the selection pipe between the first supply pipe and the second supply pipe.
According to this configuration, the durability is increased by preventing the mechanical elements from being worn during braking, and since a plurality of the braking gears are braked at opposite positions, there is an effect of preventing the occurrence of vibration due to eccentricity. Will occur.

Description

Brake system {BRAKE APPARATUS}

The present invention relates to a braking device, and more particularly, to a braking device capable of smoothly braking a rotational force of an object to be braked and recovering wasted energy.

In general, a wind turbine includes a rotor in which a plurality of blades are coupled to rotate by the force of the wind, and a generator that receives rotational force from a main shaft connected to the rotor and converts it into electric energy.

Here, the wind turbine can be divided into a gearless type that transmits the rotational speed of the rotor to the generator as it is, and a geared type that increases the rotational speed of the rotor using a speed increaser and transmits it to the generator.

Meanwhile, a brake may be installed in the wind turbine to prevent the rotor from rotating. The brake can keep the rotor stationary when installing wind turbines or performing maintenance work for the safety of workers.

In the case of the above-described geared wind turbine generator, a brake is mainly installed on an output shaft of a gearbox, that is, a generator shaft having a smaller rotational force than a main shaft having a large rotational force, and a disc brake is generally used as a brake.

However, when the disc brake is operated, it is braked by the frictional force between the disc and the caliper, so there is a problem that the disc is worn by braking and the durability is deteriorated. Also, since the eccentricity is operated during braking, vibration occurs. There is a problem in that energy is wasted.

Document 1: Registered Patent Publication No. 10-0990053 (announced on October 29, 2010) Document 2: Registered Patent Publication No. 10-1239705 (announced on March 6, 2013) Document 3: Unexamined Patent Publication No. 10-2017-0137286 (published on Dec. 13, 2017) Document 4: Registered Patent Publication No. 10-1310813 (announced on September 26, 2013)

Therefore, the present invention was invented to solve the above-described problems, and an object of the present invention is to increase durability by preventing abrasion of mechanical elements during braking, and to prevent vibration due to eccentricity during braking. It is intended to provide a braking device capable of recovering energy that is discarded and can be braking naturally if necessary.

These objects are achieved by the present invention, and according to one aspect of the present invention, a braking device includes a rotating shaft for transmitting a rotating force; A rotation gear fixed to the rotation shaft; A plurality of braking gears meshed with the rotating gears; And a control member controlling rotation of the plurality of braking gears, respectively.

And the control member is a cylinder connected to the braking gear; And a control means for controlling the cylinder.

In the present invention, the control means comprises: a first supply pipe for injecting air into a space where one side of the piston of the cylinder contacts; A first recovery pipe for discharging air from a space where one side of the piston contacts; A second supply pipe for injecting air into a space where the other side of the piston of the cylinder contacts; A second return pipe for discharging air from a space where the other side of the piston contacts; A connection pipe to which the first and second collection pipes are respectively connected; A selection pipe in communication with the connection pipe; And a solenoid valve that connects or blocks the selection pipe between the first supply pipe and the second supply pipe.

In addition, a pair of intake pipes mounted on the solenoid valve and supplying air to the first supply pipe and the second supply pipe, respectively, are additionally mounted.

In the present invention, an air filter is additionally mounted on the pair of intake pipes.

In addition, a compression tank for compressing air supplied from the first and second recovery pipes is additionally mounted on the connection pipe.

And it characterized in that the generator for generating electricity by the compressed air discharged from the compression tank is further configured.

According to another aspect of the present invention, the first supply pipe, the second supply pipe, the first return pipe and the second return pipe are each additionally equipped with a check valve.

Further, the operating shaft of the cylinder is connected to the braking gear, and the cylinder is connected to a fixed plate.

According to another aspect of the present invention, when the operation shaft is retracted into the cylinder by the rotation of the brake gear, the selection pipe is connected to the second supply pipe by the solenoid valve, and the other side of the piston of the cylinder It is characterized in that air is injected into the contacting space.

According to another aspect of the present invention, when the operation shaft advances outside the cylinder by the rotation of the braking gear, the selection pipe is connected to the first supply pipe by the solenoid valve, and one side of the piston of the cylinder It is characterized in that air is injected into the contacting space.

According to another aspect of the present invention, the brake gear, the cylinder, and the solenoid valve are respectively mounted in an even number.

In addition, the cylinders are mounted at positions opposite to each other, so that vibrations caused by operation of each other are attenuated.

In the present invention, a sensor for detecting the position of the piston is additionally mounted on the cylinder, and the operation of the solenoid valve is linked to a signal detected by the sensor.

According to the above-described configuration of the present invention, it is possible to prevent the occurrence of vibration due to eccentricity because it prevents mechanical elements from being worn during braking to increase durability, and because a plurality of the braking gears are braked at opposite positions. In particular, braking can be naturally performed by the rotation ratio of the braking gear and the rotating gear, and the energy discarded by the charged compressed air can be recovered.

1 is a perspective view of a braking device.
2 is a plan view of a state in which the top plate shown in FIG. 1 is removed.
3 is a perspective view of a cylinder and a solenoid valve for braking the braking gear.
Figure 4 is a plan view of the cylinder and solenoid valve shown in Figure 3;
5A and 5B are cross-sectional views for explaining an operating state of the cylinder shown in FIG. 4.
6a to 6c are configuration diagrams for explaining an operating state.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the same reference numerals will be used for the same parts throughout the drawings.

1 is a perspective view of a braking device, and FIG. 2 is a plan view of a state in which the top plate is removed.

As shown in the drawings, the braking device according to an embodiment of the present invention indicated by reference numeral 10 includes a rotation shaft (not shown) that transmits rotational force, a rotation gear 13 fixed to the rotation shaft, and the rotation gear 13 ) And a plurality of braking gears 15 engaged with each other, and a control member controlling rotation of the plurality of braking gears 15, respectively.

The rotating shaft is fixed to the center of the rotating gear 13, and the rotating gear 13 is also rotated by the rotation of the rotating shaft. That is, rotation of the blade (not shown) is transmitted to the rotation shaft, and the rotation shaft drives the rotation gear 13.

The control member is composed of a cylinder 20 connected to the braking gear 15 and a control means for controlling the cylinder 20.

The operating shaft 21 of the cylinder 20 is connected to the braking gear 15, and the cylinder 20 is connected to the fixing plate 7 (see Fig. 2). The braking gear 15 and the cylinder (20) and the solenoid valve 30 are mounted in an even number, respectively, and in the drawing, the braking gear 15, the cylinder 20, and the solenoid valve 30 are shown in each of four. However, it is desirable to install 8 each.

In addition, it is preferable that the even numbered cylinders 20 are mounted at positions opposite to each other so that vibrations caused by the operation of each other are attenuated.

The control means will be described with reference to FIGS. 2, 3 and 4.

The control means is a first supply pipe (31), a first return pipe (41), a second supply pipe (32), a second return pipe (42), a connection pipe (43), a selection pipe (45), a compression tank (60). ), etc.

The first supply pipe 31 is a pipe for injecting air into a space where one side of the piston 22 of the cylinder 20 contacts, and the first return pipe 41 is a side surface of the piston 22 It is a pipe that discharges air from the contacting space (see Fig. 3).

In addition, the second supply pipe 32 is a pipe for injecting air into a space where the other side of the piston 22 of the cylinder 20 contacts, and the second return pipe 42 is It is a pipe that discharges air from the space in contact with the other side.

In addition, the connection pipe 43 is a connection pipe through which the first and second collection pipes 41 and 42 are respectively connected (see FIG. 2). The selection pipe 45 is the connection pipe 43 And one end are in communication, and the other end is connected to the solenoid valve 30 (see Fig. 6a).

The solenoid valve 30 has a function of connecting or blocking the selection pipe 45 to the first supply pipe 31 and the second supply pipe 32, as shown in FIGS. 6A to 6C. do.

And, as shown in FIGS. 3 and 6A, the solenoid valve 30 is equipped with a pair of intake pipes 80 for supplying air to the first supply pipe 31 and the second supply pipe 32, respectively. The air filters 44 are mounted on the intake pipes 80, respectively.

As shown in Figure 1, the connection pipe 43 is equipped with a compression tank 60 for compressing the air supplied from the first and second collection pipes 41 and 42, and the The compressed air discharged from the compression tank 60 passes through the generator 50 to generate electricity. (See FIG. 6A)

And, as shown in FIGS. 3 and 6A, the first supply pipe 31, the second supply pipe 32, the first return pipe 41 and the second return pipe 42 are provided with a check valve 3a. 3b, 3c, 3d) are installed respectively to prevent air from flowing backward.

And the cylinder 20 is equipped with sensors (2a, 2b) for detecting the position of the piston (22), the operation of the solenoid valve (30) is linked to the signal detected by the sensors (2a, 2b) (See Figs. 5a and 5b)

Hereinafter, the operating state will be described with reference to FIGS. 6A to 6C.

The rotation of the blade (not shown) of the wind turbine (not shown) is transmitted to the rotation shaft, and the rotation gear 13 is rotated by the rotation of the rotation shaft. When the rotation gear 13 is rotated, the plurality of braking gears 15 are also rotated.

Therefore, when the rotation of the braking gear 15 is suppressed by the control means, the rotation of the rotation gear 13 engaged with the braking gear 15 is also suppressed, and the blade (not shown) is also braked.

Usually, as shown in Fig. 6A, the first supply pipe 31 and the second supply pipe 32 each maintain a state in communication with the intake pipe 80, and the selection pipe 45 is blocked. You will stay in the state.

In this state, the piston 22 of the cylinder 20 reciprocates by the operation shaft 21 connected to the braking gear 15, and the first supply pipe according to the position of the piston 22 (31) Or air is sequentially introduced into the cylinder 20 from the second supply pipe 32. In addition, by the operation of the piston 22, air is moved to the compression tank 60 through the connection pipe 43 in the first and second recovery pipes 41 and 42 to be compressed. do.

The check valves 3a, 3b, 3c, and 3d are mounted on the first supply pipe 31, the second supply pipe 32, the first recovery pipe 41 and the second recovery pipe 41, respectively. Therefore, the backflow of air is prevented, so that the air is compressed in the compression tank 60.

In addition, since the air filter 44 is mounted on the intake pipe 80, foreign substances are prevented from being contained in the air sucked into the cylinder 20.

In such a state, when a certain amount of air is compressed in the compression tank 60, the compressed air is discharged to the outside, and the discharged compressed air generates electricity by the generator 50.

Accordingly, in the compression tank 60, air is maintained in a compressed state by a constant pressure.

In addition, when it is necessary to brake the rotation shaft, the selection pipe 45 is in communication with the first supply pipe 31 or the second supply pipe 32 by the operation of the solenoid valve 30.

A state of braking the rotating shaft in this state will be described with reference to FIGS. 6B and 6C.

When the operation shaft 21 connected to the braking gear 15 moves from the bottom dead center to the top dead center based on the drawing, the selection pipe 45 is supplied with the first supply by the operation of the solenoid valve 30. (31) will be communicated (see Fig. 6b).

In such a state, the compressed air compressed in the compression tank 60 passes through the selection pipe 45 and the first supply pipe 31 to a space where one side of the piston 22 of the cylinder 20 contacts. Air is injected (see Fig. 5b).

The movement of the piston 22 is suppressed by the compressed air introduced into the cylinder 20, and the movement of the rotation shaft is suppressed by the suppressed piston 22, and the brake gear ( 15) rotation is suppressed. The rotation of the rotation gear 13 engaged by the braking gear 15 and the rotation shaft connected thereto is also suppressed.

And when the operation shaft 21 connected to the braking gear 15 moves from the top dead center to the bottom dead center, the selection pipe 45 is the second supply pipe 32 by the operation of the solenoid valve 30. It is communicated with (see Fig. 6c).

In this state, the compressed air compressed in the compression tank 60 passes through the selection pipe 45 and the second supply pipe 32 to a space where the other side of the piston 22 of the cylinder 20 contacts. Air is injected (see Fig. 5A).

As the compressed air is suppressed from moving the piston 22 by the compressed air introduced into the cylinder 20, the rotation of the brake gear 15 is suppressed by the suppressed piston 22 The rotation of the rotating gear 13 is also suppressed.

In addition, each of the cylinders 20 is connected while the selection pipe 45 is alternately connected with the first supply pipe 31 and the second supply pipe 32, as shown in FIGS. 6B and 6C, so that the operation shaft 21 The rotation of the rotation gear 13 is braked by the operation shaft 21 in which the movement of the rotation is continuously suppressed and the transfer is suppressed. Accordingly, the rotation shaft fixed to the rotation gear 13 is also braked.

What has been described above is for implementing the braking device according to the present invention, and is not limited to the above-described embodiments of the present invention, and the present invention pertains without departing from the gist of the present invention as claimed in the following claims. Anyone of ordinary skill in the field will have the technical idea of the present invention to the extent that various modifications can be implemented.

The braking device according to the present invention is not applied only to wind power generators, but can be applied to all devices requiring a brake in automobiles or mechanical facilities.

10: brake system, 13: rotating gear,
15: brake gear, 20: cylinder,
21: working shaft, 22: piston,
30: solenoid valve, 31: first supply pipe,
32: second supply pipe, 41: first return pipe,
42: second return pipe, 46: connector,
44: air filter, 45: selection pipe,
50: generator, 80: intake pipe,
2a. 2b: sensor, 3a, 3b, 3c, 3d: check valve

Claims (14)

A rotation shaft for transmitting rotational force;
A rotating gear fixed to the rotating shaft;
A plurality of braking gears meshed with the rotating gears; And
Consisting of a control member for each controlling the rotation of a plurality of the braking gear,
The control member includes a cylinder connected to the brake gear; And a control means for controlling the cylinder,
The control means comprises: a first supply pipe for injecting air into a space where one side of the piston of the cylinder contacts; A first recovery pipe for discharging air from a space where one side of the piston contacts; A second supply pipe for injecting air into a space where the other side of the piston of the cylinder contacts; A second return pipe for discharging air from a space where the other side of the piston contacts; A connection pipe to which the first and second collection pipes are respectively connected; A selection pipe in communication with the connection pipe; And a solenoid valve that connects or blocks the selection pipe between the first supply pipe and the second supply pipe. delete delete The braking device according to claim 1, wherein a pair of intake pipes is mounted on the solenoid valve and supplies air to the first supply pipe and the second supply pipe, respectively. The braking device according to claim 4, wherein an air filter is additionally mounted on the pair of intake pipes. The braking device according to claim 4, wherein a compression tank for compressing air supplied from the first and second collection pipes is additionally mounted on the connection pipe. The braking device according to claim 6, further comprising a generator for generating electricity by compressed air discharged from the compression tank. The braking device according to claim 4, wherein a check valve is additionally mounted to the first supply pipe, the second supply pipe, the first recovery pipe, and the second recovery pipe. 9. The braking device according to claim 8, wherein the operating shaft of the cylinder is connected to the braking gear, and the cylinder is connected to a fixed plate. The space of claim 9, wherein when the operation shaft is retracted into the cylinder due to rotation of the braking gear, the selection pipe is connected to the second supply pipe by the solenoid valve, and the other side of the piston of the cylinder contacts Braking device, characterized in that the air is injected. The space according to claim 9, wherein when the operation shaft advances outside the cylinder by rotation of the braking gear, the selection pipe is connected to the first supply pipe by the solenoid valve, so that one side of the piston of the cylinder contacts Braking device, characterized in that the air is injected. The braking device according to claim 9, wherein the braking gear, the cylinder, and the solenoid valve are mounted in even numbers, respectively. 13. The braking device according to claim 12, wherein the cylinders are mounted at positions opposite to each other so that vibrations caused by the operation of each other are attenuated. The braking device of claim 9, wherein a sensor for detecting the position of the piston is additionally mounted on the cylinder, and the operation of the solenoid valve is linked to a signal detected by the sensor.

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