KR0178774B1 - Hydrodynamic brake apparatus - Google Patents

Abstract

The present invention relates to a hydraulic brake apparatus which is provided around a rotating shaft of a power engine and quickly or accurately brakes or rotates the rotating shaft. The hydraulic brake apparatus includes a casing (1) filled with hydraulic oil and a sliding member A hydraulic pressure control ball valve 22 for controlling the flow rate of the hydraulic oil in cooperation with the adjustment lever 4 mounted on the outside of the casing as a turning member, And a braking mechanism (B) coupled to the piston mechanism (P) to provide a rotational power shaft (40) of the power engine.

Therefore, even when the hydraulic braking device of the present invention is continuously used for a long time, there is no case in which the device is not damaged and braked, and even if there is no separate brake booster, The construction is simple, the manufacturing cost is low, and the brake pedal is not used because the brake pedal is constructed in a completely different concept from that of the friction type, so that there is no need to replace the brake pad at all.

Description

Hydraulic brake system

Figure 1 is a partial cross-sectional view of a hydraulic brake device according to the present invention.

FIG. 2 is a front view of a section taken along line A-A of FIG. 1, with the bearing cap removed.

FIG. 3 is a plan view of the upper part of the protective box of the hydraulic brake apparatus according to the present invention.

FIG. 4 is a schematic diagram of a conventional friction-type braking device

DESCRIPTION OF THE REFERENCE NUMERALS

1: Casing 2: Piston shaft

4: Control lever 12: Bolt type cap

13: sealing member 20: piston

21: pressure ring 22: ball valve

30: hydraulic oil chamber 31: air chamber

32: link plate 33, 34: bearing

40: Power side 41: Disc cam

42: guide member 43:

50: cylinder 60: bearing cap

70: exercise device 80: protective box

The present invention is applied to a hydraulic braking device which is installed around a rotating shaft of a power engine and which quickly or precisely brakes or decelerates the rotating shaft.

2. Description of the Related Art In general, a mechanical system in which a power engine is installed, such as an automobile, a ship, or an industrial facility, is equipped with an engine brake device for thermal efficiency and safety reasons to stop or slow down the power engine. A friction type brake device which converts mechanical kinetic energy into thermal energy by friction to dissipate it is mainly used.

The frictional braking device is generally divided into two types, i.e., a disk type and a drum type. These devices are connected to a disk or a drum that is connected to a rotating power shaft of a power engine and rotates, The friction material such as a pad that is attached is designed to provide a braking effect by friction.

4 is a schematic view showing a schematic configuration of a drum type brake device in the friction type brake device, wherein the drum type brake device is a type in which the brake pedal 101 is stepped on, The hydraulic pressure is applied to the wheel cylinder 103 and the brake shoe 104 is pushed to the inner surface of the brake drum 105 to generate a frictional force using the frictional coefficient and the rotary shaft is braked by the frictional force .

However, the frictional brake device can not eliminate various inconveniences and intrinsic risks at the time of use.

As a concrete example, when the automobile equipped with the friction brake device is used for a long period of time while descending a sloping slope of a mountainous mountainous region, the brake drum 105 and the brake pads 106 Frictional heat of up to about 800 DEG C is generated in the braking device and this frictional heat is transferred to and accumulated in the brake drum 105 and other mechanical elements to cause breakage or deterioration of the device components, The intrinsic risk of not obtaining the brake operation effect was never avoided.

In addition, the driver always has to feel anxiety due to the brake pads 106 and the brake drum 105 that are worn, and there is a problem that the wearer must periodically replace the worn brake pads 106. In addition, recently, as the power engine has become larger, the power shaft can not be braked only by the manpower. In contrast to this, the brake booster system is used as a supplementary means, which requires a lot of facility cost and wastes engine power.

In addition, since the brake pad generally uses asbestos, which is a carcinogenic substance, as a main ingredient, it has a detrimental effect on the human body. In particular, noise pollution caused by friction between the brake drum 105 and the brake pad 106 can be ignored There was no.

In order to solve all the problems caused in the friction type brake device, the applicant of the present invention has proposed a hydraulic pressure generating apparatus which comprises a casing formed with a hydraulic oil inlet opening and closing by a bolt-type cap as disclosed in the applicant's prior patent No. 96-34681, A hydraulic control valve installed on a hydraulic oil passage in the casing for controlling a flow rate of movement, and an oil pressure control valve mounted on an outer surface of the casing so as to be rotatable, And a braking mechanism that is hinged to the shaft end of the piston mechanism to brak the rotary shaft. However, the hydraulic braking device of the hydraulic braking device is configured by the power transmission principle of the gear Noise and abrasion occurred during high-speed rotation, and a limited size There has been a problem in that a braking effect of a desired degree is not obtained when the braking device is mounted on a vehicle and an unreasonable force is applied to components such as gears and the service life is shortened.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the drawbacks of the hydraulic braking device disclosed in the above-referenced Japanese Patent No. 96-34681, and it is an object of the present invention to provide a more efficient device. By replacing the structure with a linkage type instead of a gear type, the problem of noise and abrasion was completely solved and the service life of the device was extended.

Hereinafter, the construction of the hydraulic brake device according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a partially cut-away perspective view of a hydraulic braking device according to the present invention, FIG. 2 is a front view of the bearing cap separated from an AA line of FIG. 1, and FIG. Fig. 3 is a plan view showing the upper part of the protective box during operation of the hydraulic braking device. Fig.

As shown in the drawings, a hydraulic brake apparatus of the present invention includes a casing 1 filled with hydraulic fluid, a piston mechanism P slidably mounted on the casing to perform reciprocating linear motion, A hydraulic control ball valve 22 for controlling the flow rate of the hydraulic oil in cooperation with the control lever 4 mounted on the side surface of the control lever 4, a motion mechanism 70 for driving the control lever 4, And a braking mechanism B for braking the rotary power shaft 40. The braking mechanism B is configured by a suitable element according to the type of the power engine (refer to Japanese Patent Application No. 96-34681 The disclosed gear configuration, or the linkage shown in Figure 1 of the present invention).

In the casing 1 of the present invention, a hydraulic oil inlet opening and closing by a bolt-type cap 12 is formed. The inner space of the casing 1 includes a hydraulic oil chamber 30 filled with a hydraulic pressure portion, And the air chamber 31 is formed.

A piston shaft 2 having a piston 20 formed at the center of the shaft is mounted in the interior space of the gassing unit 1 as a sliding member inside the cylinder 50. The piston shaft 2, A sealing ring 13 for preventing hydraulic oil from leaking is mounted on the front and rear surfaces of the reciprocating casing, and a pressure ring 21 for preventing the hydraulic oil from flowing in the other direction is mounted on the outer circumferential surface of the piston 20 .

As shown in FIG. 3, the cylinder 50 formed in the casing 1 may be integrally molded with the casing. However, it is also possible that the cylinder, which is separately manufactured in the state that the casing is heated and expanded, The cylinder may be cooled and then fixed with the shrinkage force at that time.

2, in the present invention, the disc cap 41 is welded to an appropriate position of the rotational power shaft 40 located at the upper center of the casing 1, The portion of the disc cap 41 is rotatably inserted into the left bearing 33 of the link plate 32 on which the bearings 33 and 34 are mounted on both sides and the bearing 34 on the opposite side is inserted, A guide member 42 having a slide part 43 formed at both ends thereof is fixed with a rotary material and then one end of the piston side 2 protruded to one side of the guide member 42 is fixed with a nut 52. When the hydraulic braking device of the present invention is used for a large-sized engine, two link plates are used for more accurate braking.

In addition, in order to protect the components of the inventive device and to easily mount the device on the vehicle, the outside of the device is surrounded by a protective box 80, and slide grooves 81 of a predetermined length are formed on opposite wall surfaces of the box, And a slide portion (43) of the guide member (42) is inserted into the groove to reciprocate. The bearing cap 60 is engaged with the front and rear surfaces of the link plate 32 to transmit the driving force and the braking force and to protect the bearings 33 and 34.

The operation and effect of the hydraulic brake apparatus of the present invention configured as described above will be described in detail as follows.

The hydraulic braking device of the present invention employs an oil pressure principle. In other words, the liquid introduced the principle that unlike gas, the volume does not decrease even when the pressure is applied.

The hydraulic braking device of the present invention is fixedly installed around the rotating shaft of the power engine, and the rotating power shaft 40 and the braking force generating device are coupled by a braking mechanism (B). When the rotary power shaft 40 starts to move due to the output of the power engine, the disc cap 41 welded to the power shaft 40 rotates in the bearing 33, And the link plate 32 moves up and down and back and forth in an arc. The guide member 42 rotatably mounted on the link plate 32 by the above operation moves the hydraulic oil in the casing by pushing or pulling the piston shaft 2 while simultaneously performing sliding and keying motion.

The apparatus of the present invention allows the flow of the hydraulic oil stored in the hydraulic oil chamber 30 to flow without resistance and operates the hydraulic ball valve 22 to interrupt or stop the flow of the hydraulic oil during the braking operation, By using the resistance of the flow and the stopping physical force, the braking mechanism B achieves a very precise braking effect that slows or stalls the speed of the rotary power shaft 40 of the power train.

In the hydraulic brake apparatus of the present invention, the control lever 4 for controlling the degree of opening and closing of the ball valve 22 provided in the hydraulic oil chamber 30 is operated by an infrared sensor or other sensor It is possible to automate the industrial equipment and completely prevent the safety accident caused by the carelessness of the operator.

In addition, the air chamber 31 is formed in an appropriate size on the hydraulic oil chamber 30 in order to mitigate the resistance of the hydraulic fluid flow and to prevent shock and damage to the mechanical elements caused by sudden braking.

As described above, the hydraulic seal brake apparatus of the present invention does not cause any breakage or braking of the brake apparatus even if it is continuously used for a long period of time. By constructing the apparatus in a completely different concept from the friction type brake apparatus, In addition, there is no need for a solid body of the invention, and a braking operation can be performed only by a single operation without installing a separate brake booster device. A useful manufacturing method is simple because the apparatus is simple and the production cost is low. .

Claims (1)

A hydraulic type brake device for braking or decelerating a rotary shaft of a power engine using a resistance of flow of hydraulic fluid and a physical force stopping the flow of hydraulic fluid by interrupting or stopping the flow of hydraulic fluid, A piston mechanism P in which both end portions of the piston shaft 2 are protruded to the outside while being slidably mounted in the internal space of the casing 1; A control lever 4 mounted on the outer surface of the casing 1 to control the hydraulic control valve 22, and a control valve 4 mounted on the outer surface of the casing 1 to control the hydraulic control valve 22. [ A braking mechanism B coupled to the rear end of the piston mechanism P for braking the rotary power shaft 40 and a braking mechanism B for braking the rotary power shaft 40, And the outside of the braking mechanism (B) And a protection box (80) surrounding the protection box (80).