KR102094533B1 - A brake device integrally formed with a hydraulic oil storage tank and an accumulator - Google Patents

Abstract

The present invention relates to a braking device in which a hydraulic oil storage tank and an accumulator are integrally formed, and more specifically, to a braking device in which the hydraulic oil storage tank and the accumulator for maintaining pressure are integrally constructed to increase the weight and space utilization of the aircraft. It is about.
The braking device in which the hydraulic oil reservoir and the accumulator of the present invention are integrally formed has an effect of reducing the weight of an aircraft because the reservoir and the accumulator in which the hydraulic oil is stored are integrally formed, and a hose or tube through which the hydraulic oil moves is not required. Therefore, it is possible to provide an economical braking system and to increase the space utilization of the aircraft.

Description

A brake device integrally formed with a hydraulic oil storage tank and an accumulator}

The present invention relates to a braking device in which a hydraulic oil storage tank and an accumulator are integrally formed, and more specifically, to a braking device in which the hydraulic oil storage tank and the accumulator for maintaining pressure are integrally constructed to increase the weight and space utilization of the aircraft. It is about.

A brake is a device that decelerates or stops the speed of a machine in motion. Mechanical brakes, hydraulic brakes, pneumatic brakes, vacuum-powered brakes, and air-powered brakes are used in bicycles, automobiles, aircraft, and the like.

The main brake is mainly applied with hydraulic brakes, and when the driver presses the lever, the driving speed decelerates or stops driving. The hydraulic brake is based on Pascal's principle, and the force that the driver presses the lever generates hydraulic pressure in the master cylinder, and the caliper receives hydraulic pressure through a pipe or hose. The caliper is provided with one or more pistons, and a piston with a pad attached to its end moves toward the disc by the hydraulic pressure received, and the pad is in close contact with the disc to generate a braking force.

The hydraulic brake is characterized in that the braking force acts equally on all wheels, and the friction loss is small, so that the braking device can be effectively operated. In addition, there is an effect that the lever does not have to be strongly pressed.

Korean Patent Registration No. 10-1395349 ("Rotor brake for rotorcraft", 2014.05.08.) Is disclosed as a prior art to which a hydraulic brake method is applied.

In order to use the hydraulic brake method, a hydraulic oil reservoir in which hydraulic oil for transmitting hydraulic oil is stored and an accumulator for maintaining pressure are required, and a hose or pipe for moving the hydraulic oil must be provided.

Since this occupies a lot of space and weight of the aircraft, there is a need for a hydraulic brake capable of increasing space utilization and lowering weight.

1. Republic of Korea Registered Patent Publication No. 10-1395349 ("Rotor brake for rotorcraft", 2014.05.08.)

The present invention has been devised to solve the above problems, and an object of the present invention is to integrally form a reservoir and an accumulator in which hydraulic oil is stored, thereby reducing the weight of the braking device and increasing space utilization of the aircraft. It is to provide a braking device integrally formed with a hydraulic oil reservoir and an accumulator.

The hydraulic oil storage tank of the present invention and the braking device integrally formed with the accumulator include: a storage tank in which hydraulic oil is stored; It is formed on the lower portion of the storage tank, receiving the hydraulic oil from the storage tank, receiving the external force, the pressing unit for transmitting pressure to the braking unit to proceed with the braking of the rotating object; A lever portion formed at one end of the pressing portion and transmitting external force to the pressing portion to supply hydraulic oil to the pressing portion; And a pressure piston installed in the reservoir and moving in one direction by the pressure transmitted from the pressure unit to pressurize the hydraulic oil stored in the reservoir, and formed at the ends of the pressure piston and contracted according to the direction of movement of the pressure piston. It characterized in that it comprises; a axial pressure portion formed of an elastic body to maintain the pressure received by the axial piston.

In addition, the braking device is formed on the other end of the pressing portion, it characterized in that it further comprises a; transmitting portion for transmitting pressure to the braking portion.

In addition, the lever portion is hinged to the end of the pressing portion so as to be able to rotate at a predetermined angle, and is rotated by an external force, characterized in that by raising the internal pressure of the pressing portion by transmitting the external force to the pressing portion.

In addition, the pressurizing portion is installed in connection with the storage tank, when receiving an external force from the lever portion is supplied with hydraulic oil from the storage tank, characterized in that applying pressure to the hydraulic oil supplied inside the pressing portion.

In addition, the pressing portion is characterized in that the hydraulic pressure of the hydraulic oil supplied to the pressing portion is transmitted to the braking portion or the axial pressure portion.

In addition, the braking device is installed on the other end of the pressing portion, the hydraulic pressure to move to the braking portion or the axial pressure portion, and to prevent the backflow of the hydraulic pressure; characterized in that it further comprises a.

The braking device in which the hydraulic oil storage tank and the accumulator of the present invention by the above configuration are integrally formed has an effect that the weight of the aircraft can be reduced because the hydraulic oil storage reservoir and the accumulator are integrally formed.

In addition, it is possible to provide an economical braking device because there is no need to be provided with a hose or tube to move the hydraulic oil, there is an effect that can increase the space utilization of the aircraft.

1 is a schematic diagram of a conventional braking device
2 is a cross-sectional view of a braking device in which a hydraulic oil reservoir and an accumulator are integrally formed according to an embodiment of the present invention.
3 is a cross-sectional view of a braking device in which a hydraulic oil reservoir and an accumulator are integrally formed according to an embodiment of the present invention.
Figure 4 is a front view of a braking device integrally formed with a hydraulic oil storage tank and a accumulator according to a modification of an embodiment of the present invention
5 is a circuit diagram of a braking device in which a hydraulic oil reservoir and an accumulator are integrally formed according to a modification of an embodiment of the present invention.
Figure 6 is a front view of a braking device integrally formed with a hydraulic oil reservoir and an accumulator according to another modification of an embodiment of the present invention
7 is a circuit diagram of a braking device in which a hydraulic oil reservoir and an accumulator according to another modification of an embodiment of the present invention are integrally formed;
8 is an enlarged cross-sectional view of a check valve of a braking device in which a hydraulic oil reservoir and an accumulator are integrally formed according to an embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

1 shows a schematic diagram of a conventional braking device. As illustrated in FIG. 1, the lever part 40 receiving external force, the storage tank 10 in which hydraulic oil is stored, and the hydraulic oil supplied from the storage tank 10 are supplied, and the storage tank 10 is supplied with external force received by the lever part 40. It is configured to include a pressurizing portion 20 for pressurizing the hydraulic oil supplied from), a pressure accumulating portion 30 for maintaining a high pressure state, and a braking portion 50 for receiving the hydraulic pressure of the hydraulic oil to brake the rotational motion of the disc.

In other words, since the lever part 40, the storage tank 10, the pressing part 20, the accumulating part 30, and the braking part 50 are separately formed, the lever part 40, the The reservoir 10, the pressurizing portion 20, the accumulating portion 30 and the braking portion 50 are connected, and a hose for transmitting hydraulic pressure should be provided.

Therefore, space and weight must be provided because the lever part 40, the storage tank 10, the pressing part 20, the accumulating part 30, and the braking part 50 must be provided respectively. There is a problem that it occupies a lot, and the hose connecting the lever part 40, the storage tank 10, the pressing part 20, the accumulating part 30 and the braking part 50 must also be installed. There is a problem that it is troublesome to install.

The present invention has been devised to solve the above-mentioned problems, and it is possible to provide a braking device suitable for an aircraft because it forms a storage tank, an accumulator, a pressurizing part, and a lever part integrally and takes up little space and also has a light weight. .

In addition, since only one hose for transmitting hydraulic pressure to the braking unit needs to be provided, a simplified braking device can be provided.

With reference to Figures 2 to 8 will be described in more detail the braking device integrally formed with a hydraulic oil reservoir and an accumulator of the present invention.

Figure 2 shows a cross-sectional view of a braking device integrally formed with a hydraulic oil reservoir and an accumulator according to an embodiment of the present invention. As illustrated in FIG. 2, a storage tank 100 in which hydraulic oil is stored is provided, and an accumulator 200 formed of an elastic body is installed inside the storage tank 100. A lower portion of the storage tank 100 is connected to the storage tank 100 and is provided with a pressurizing portion 300 receiving hydraulic oil from the storage tank 100, and at one end of the pressurizing portion 300, the pressurizing portion 300 ) And a lever part 400 coupled to be rotatable is installed.

On the upper portion of the reservoir 100, a Brader valve 110 is further installed, and the Brader valve 110 is intended to maintain the pressure in the reservoir 100 equal to atmospheric pressure, and at the same time, the reservoir 100. It is equipped to replenish hydraulic oil.

The pressing portion 300 is preferably formed of an injection pump, the end of the pressing portion 300 is a hose-type transmission portion 600 for transmitting hydraulic pressure to the braking portion 500 can be coupled It is preferable that the addition is formed.

The hydraulic oil storage tank and the accumulator integrally formed with the braking device of the present invention are provided with one or more check valves so that the hydraulic pressure and the external force received from the pressing part 300 are not reverse flowed from the lever part 400. A detailed description will be provided later.

When the external force is applied to the lever part 400 with reference to FIG. 3, a path through which pressure is transmitted will be described in more detail.

3 is a sectional view showing a braking device integrally formed with a hydraulic oil reservoir and an accumulator according to an embodiment of the present invention. 3, one end of the transmission unit 600 is coupled to the pressing unit 300, and the other end is coupled to the braking unit 500.

The braking part 500 includes a rotating disk 540, a fixed pad 530 attached to one side of the disk 540, and a movable pad 520 detachably attached to the other side of the disk 540 through linear motion, and It comprises at least one braking piston 510 to linearly move the moving pad 520 by receiving external force.

Referring to FIG. 3, when an external force is applied to the lever part 400, operation changes of the pressing part 300, the accumulating part 200 and the braking part 500 will be described in detail.

When an external force is applied to the lever part 400, the lever part 400 rotates a predetermined angle in a counterclockwise direction and transmits an external force to the pressing part 300 hinged to the end of the lever part 400. The pressing part 300 is formed of an injection type pump and is characterized in that it is connected to the storage tank 100.

When the pressing part 300 receives external force from the lever part 400, the hydraulic oil stored in the storage tank 100 is supplied to the pressing part 300, and the hydraulic oil supplied to the pressing part 300 is pressurized. The unit 300 receives the external force transmitted from the lever unit 400 and becomes hydraulic oil in a high pressure state.

The hydraulic pressure of the hydraulic oil whose pressure is increased by the pressing part 300 is transmitted to the accumulator 200 and the braking part 500. First, the hydraulic pressure delivered to the accumulator 200 compresses the accumulator 200 formed of an elastic body to maintain the pressure level of the hydraulic pressure received by the accumulator 200.

At this time, the accumulator 200 is characterized in that the spring-shaped elastic body 220 is attached to the end of the accumulator piston 210, the accumulator piston 210 receives the hydraulic pressure and performs a linear motion , The elastic body 220 is compressed by the linear motion of the axial piston 210.

The hydraulic pressure delivered to the braking part 500 moves the braking piston 510. The braking piston 510 receives the hydraulic pressure and moves toward the disk 540 through a linear motion. The moving pad 520 is attached to the front surface of the braking piston 510, and when the braking piston 510 moves toward the disc 540, the moving pad 520 makes contact with the disc 540. do.

Due to this, the disk 540, which was in rotational motion, is compressed by the moving pad 520 and the fixing pad 530, thereby stopping the rotational motion.

At this time, the hydraulic oil reservoir of the present invention and the braking device integrally formed with the accumulator are provided with one or more of the check valves to prevent backflow of pressure as described above. At this time, the check valve may be divided into a lever check valve 330, a low pressure check valve 340, and a high pressure check valve 350 according to the purpose and the installed position.

The lever check valve 330 is provided on the pressing portion 300, and is provided to prevent external force transmitted from the lever portion 400 from flowing back to the lever portion 400.

The low pressure check valve 340 and the high pressure check valve 350 differ according to the rotation angle of the lever part 400 of the braking device in which the hydraulic oil reservoir and the accumulator of the present invention are integrally formed.

Braking can be largely divided into dynamic braking and static braking. Dynamic braking means stopping a moving object, and static braking mainly means braking for parking purposes. Static braking requires more pressure than dynamic braking because the braking must be maintained to keep the object from moving.

Therefore, when the lever 400 in parallel with the storage tank 100 rotates about 60 ㅀ to 90 ㅀ, it is an operation for dynamic braking, and when the lever 400 rotates about 100 ㅀ or more. It can be seen as an operation for static braking. The above-described angular range is for explaining an embodiment of the present invention and the angular range can be easily adjusted from those skilled in the art.

In the case of dynamic braking, the low pressure check valve 340 opens to transmit hydraulic pressure to the accumulator 200 and the braking part 500 because the magnitude of the external force received by the pressing part 300 is relatively small. In the case of static braking, the high-pressure check valve 350 is opened to transmit hydraulic pressure to the accumulator 200 and the braking part 500 because the external force received by the pressing part 300 is relatively large.

At this time, the pressing part 300 may also be divided into dynamic braking and static braking to operate. The pressurization unit 300 may be divided into a low-pressure pump 310 and a high-pressure pump 320, and is characterized in that only the low-pressure pump 310 is operated during dynamic braking, and the high-pressure during static braking. It is characterized in that the pump 320 is operated.

The static braking and dynamic braking states of the braking device integrally formed with the hydraulic oil reservoir and accumulator of the present invention will be described in more detail with reference to FIGS. 4 to 7.

Figure 4 shows a front view of a braking device integrally formed with a hydraulic oil reservoir and an accumulator according to a modification of an embodiment of the present invention. As shown in FIG. 4, the dynamic transfer of the lever 400 rotated by 60 ㅀ to 90 ㅀ will be described with reference to FIG. 5 when the braking device is in the dynamic braking state.

5 shows a circuit diagram of a braking device in which a hydraulic oil reservoir and an accumulator are integrally formed according to a modification of an embodiment of the present invention. 5, the low pressure pump 310 is connected to the storage tank 100, and when the external force received by the lever unit 400 is transmitted, the hydraulic oil in the storage tank 100 is the low pressure pump ( 310).

The hydraulic oil supplied to the low pressure pump 310 is pressurized by the low pressure pump 310 to increase the hydraulic pressure. At this time, the hydraulic pressure in a high pressure state passes through the lever check valve 330. The hydraulic pressure that has passed through the lever check valve 330 passes through the low pressure check valve 340.

The hydraulic pressure that has passed through the low pressure check valve 340 is transmitted to the accumulator 200 and the braking part 500. The hydraulic pressure delivered to the accumulator 200 presses the accumulator piston 210 so that the elastic body 220 compresses, so that the reservoir 100 and the pressing part 300 in communication with the reservoir 100 are Make sure to maintain high pressure.

The hydraulic pressure transmitted to the braking part 500 presses the braking piston 510 to move the braking piston 510 toward the disk 540, and the moving pad attached to one surface of the braking piston 510 520 and a fixing pad 530 attached to the disk 540 squeezes the disk 540 to brake the rotating disk 540.

Figure 6 shows a front view of a braking device integrally formed with a hydraulic oil reservoir and an accumulator according to another modification of an embodiment of the present invention. As illustrated in FIG. 5, with the static braking in which the lever part 400 is rotated by 100 ㅀ or more, the direction of hydraulic transmission when the braking device is in the static braking state will be described with reference to FIG. 7.

7 illustrates a circuit diagram of a braking device integrally formed with a hydraulic oil reservoir and an accumulator according to another modified example of the embodiment of the present invention. As shown in FIG. 7, the low pressure pump 310 is connected to the storage tank 100, and when the external force received by the lever unit 400 is transmitted, the hydraulic oil in the storage tank 100 is the low pressure pump ( 310). The hydraulic oil supplied to the low pressure pump 310 is pressurized by the low pressure pump 310 to increase the hydraulic pressure. At this time, the hydraulic pressure in a high pressure state passes through the lever check valve 330.

In the case of static braking, the low pressure pump 310 pressurizes the high pressure pump 320 because the external force transmitted by the lever 400 is greater than dynamic braking, and the high pressure pump 320 pressurizes the pressure once more. Pressurizes the hydraulic oil supplied to the unit (300).

The hydraulic pressure of the hydraulic oil pressurized by the high pressure pump 320 passes through the high pressure check valve 350 and is transmitted to the accumulating part 200 and the braking part 500 as in the case of dynamic braking, so that the accumulating part The hydraulic pressure delivered to the 200 presses the axial piston 210 to compress the elastic body 220 so that the storage tank 100 and the pressing unit 300 communicating with the storage tank 100 are in a high pressure state. The hydraulic pressure transmitted to the braking part 500 presses the braking piston 510 to move the braking piston 520 toward the disk 540, and to one surface of the braking piston 510. The attached moving pad 520 and the fixed pad 530 attached to the disk 540 compress the disk 540 to brake the rotating disk 540.

As shown in Figures 5 and 7, the braking device in which the hydraulic oil storage tank and the accumulator of the present invention are integrally formed has a difference in a flow path through which hydraulic pressure is transmitted when dynamic braking and a flow path through which hydraulic pressure is transmitted during static braking. have.

Therefore, each flow path is provided with one or more relief valves that limit the maximum pressure of the braking system in which the hydraulic oil reservoir and accumulator of the present invention are integrally formed to maintain a pressure within a specific level or range. It has the effect of being able to provide.

8 is an enlarged cross-sectional view of a check valve of a braking device in which a hydraulic oil reservoir and an accumulator are integrally formed according to an embodiment of the present invention. As illustrated in FIG. 8, the lever check valve 330 is divided into an inlet of a fluid and an outlet of a fluid so that the fluid can move in one direction.

The lever check valve 330 is provided with a valve spring 332 therein, and a spherical valve seat 331 is formed at one end of the valve spring 332. The valve seat 331 is formed on one end of the valve spring 332, it is preferably formed close to the fluid inlet.

Therefore, the fluid passing through the lever check valve 330 can move only in one direction, and it is possible to prevent the fluid from flowing backward and moving from the outlet to the inlet.

In order to describe the check valve, the lever check valve 330 has been described as an example, and the low pressure check valve 340 and the high pressure check valve 350 are also configured in the same manner as the lever check valve 330. And, the elastic force of the valve spring 332 may be installed with a difference.

It should not be interpreted that the technical spirit is limited to the above-described embodiments of the present invention. Of course, the scope of application is various, and various modifications can be implemented at the level of those skilled in the art without departing from the gist of the present invention as claimed in the claims. Accordingly, such improvements and modifications fall within the protection scope of the present invention as long as it is apparent to those skilled in the art.

100 storage tank
110 Brader valve
200 accumulator
210 axial piston
220 elastic body
300 pressing part
310 low pressure pump
320 high pressure pump
330 Lever Check Valve
331 valve seat
332 valve spring
340 low pressure check valve
350 high pressure check valve
400 lever
500 brake
510 brake piston
520 moving pad
530 fixing pad
540 discs
600 transmission

Claims (6)

Hydraulic oil storage tank;
It is formed on the lower portion of the storage tank, receiving the hydraulic oil from the storage tank, receiving the external force, the pressing unit for transmitting pressure to the braking unit to proceed with the braking of the rotating object;
A lever portion formed at one end of the pressing portion and transmitting external force to the pressing portion to supply hydraulic oil to the pressing portion; And
It is installed in the reservoir, is formed in the end of the axial pressure piston and the axial pressure piston to move in one direction by the pressure received from the pressing portion to press the hydraulic oil stored in the reservoir axial pressure by contracting in accordance with the direction of movement of the axial pressure piston An accumulator formed of an elastic body to maintain the pressure transmitted by the piston;
The hydraulic oil storage tank and the accumulator integrally formed braking device comprising a.
According to claim 1, The braking device,
It is formed on the other end of the pressing portion, the transmission portion for transmitting pressure to the braking portion;
A braking device integrally formed with a hydraulic oil reservoir and an accumulator, further comprising a.

The method of claim 1, wherein the lever portion,
The hydraulic oil reservoir and the accumulator are integrally installed to be hinged to the end of the pressing portion so as to be able to rotate a predetermined angle, rotate by external force, and transmit the external force to the pressing portion to increase the internal pressure of the pressing portion. Formed braking system.
According to claim 3, The pressing portion,
It is installed in connection with the storage tank, receives hydraulic oil from the storage tank when an external force is transmitted from the lever unit, and hydraulic oil storage tank and shaft characterized in that it applies pressure to the hydraulic oil supplied inside the pressing unit. Braking device with integrated press.
According to claim 4, The pressing portion,
A braking device integrally formed with a hydraulic oil reservoir and a accumulator, characterized in that the hydraulic pressure of the hydraulic oil supplied to the pressurizing part is transmitted to the braking part or the accumulator.
According to claim 1, The braking device,
A valve installed at the other end of the pressurizing portion, allowing the hydraulic pressure to move to the braking portion or the axial pressure portion, and preventing a backflow of the hydraulic pressure;
A braking device integrally formed with a hydraulic oil reservoir and an accumulator, further comprising a.

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