KR20000045685A - Brake cylinder unit for railroad car - Google Patents

Abstract

PURPOSE: A brake cylinder unit for railroad car is provided to correctly brake, improve a train service stability through automatic control when a gap between a wheel disk and a pad is over-lengthened or the disk and the pad is over-worn and maintain the braking state when the car is stop or an abnormal compressed air is provided. CONSTITUTION: A brake cylinder unit for railroad car having a piston head(200) engaged on cylinder body(100) for braking a wheel disk mounted on one place of a shaft by being expanded by compressed air provided from the railroad car comprises an adjusting tube(164), a thrust nut(104), an adjusting spindle(160), a main piston(114), a coupling spring(106) and a reset nut(150). The adjusting tube(164) is fixed to the inner side of the cylinder body(100) with a set screw(166). The thrust nut(104) is disposed in the adjusting tube(164), a vertical gear is formed on one end thereof and adjusting spring is formed on outer periphery thereof. The adjusting spindle(160) is mounted longitudinally on the center of the cylinder body(100) and has a cone coupling(136) of semi-ellipsoidal type on the front end thereof. An end of a spindle gear(161) formed as a screw type on the outer periphery of the body portion of the adjusting spindle(160) is engaged with the thrust nut(104). The main piston(114) having a gear coupling(134) contacting on the outer periphery of the cone coupling(136) advances by a supply of compressed air. The coupling spring(106) moves the adjusting spindle(160), the thrust nut(104) and the piston head(200). The reset nut(150) can adjust the location of the thrust nut(104).

Description

Braking Cylinder Unit for Railway Vehicles

The present invention relates to a braking cylinder unit for use in a wheel disc brake device of a railway vehicle, and more particularly, to provide a braking cylinder that can be braked commercially by compressed air of a vehicle, and can also be used for both commercial and parking braking. The present invention relates to a braking cylinder unit provided with an automatic gap adjusting device for providing a reader and automatically adjusting a gap between a wheel disc and a pad of a vehicle inside a cylinder.

The brake system for railroad cars, which are commonly used, adopts a drum brake, which is mainly used for both wagons and passenger cars, but it is heavy and expensive. The use of the wheel disc type is increasing, especially since it is light in weight, inexpensive, and easy to handle in terms of manufacturability and maintenance and maintenance.

However, such a brake device having a wheel disc structure may cause excessive wear between the wheel disc and the brake pads due to frictional heat worn by the wheels when the vehicle is driven for a certain period of time when the brake is braked, or below the initial set value. In the case of incorrectly set at intervals, excessive wear of the pads and deterioration of braking performance occurred, and the intervals had to be checked by regular and occasional inspections. Not only fall, but also a certain braking force can not be obtained, there is a risk that a vehicle safety accident occurs, there was a problem that greatly affects the operation of the vehicle due to excessive work time due to the maintenance of the vehicle.

The present invention has been proposed to solve the above-mentioned disadvantages, and an object of the present invention is to provide an automatic interval adjusting device that can automatically adjust a gap of a brake pad in a braking cylinder so that the adjusted interval is defined. If the above or below is to be automatically adjusted to prevent accidents and improve the maintainability of the vehicle.

Still another object of the present invention is to provide a parking brake device which can be used not only at the time of commercial use but also at the time of parking, integrally with the brake cylinder of the commercial brake device, so that braking is possible by manual operation even when the main compressed air is not supplied. This is to ensure that the vehicle can be stopped and parked safely.

In order to achieve the above object, a brake cylinder unit for a railway vehicle according to the present invention is a brake configured to brake a wheel disc installed at a predetermined position of an axle by expanding a piston head fastened to a cylinder body by compressed air supplied from a vehicle. A cylinder unit, comprising: a control tube fastened by a set screw inside the cylinder body; a thrust nut provided inside the control tube and having a vertical gear formed at one inner end thereof; One end of the spindle gear installed in the longitudinal direction at the center of the cylinder body and formed obliquely at the outer circumference of the body is fastened to the vertical gear, and the adjusting spindles having a semi-elliptic cone coupling at the distal end thereof, and the outer circumference of the cone coupling It is provided at the center of gear coupling which is in contact with The thrust piston and the thrust nut and the piston head which are moved forward by the forward main piston, the coupling spring compressed by the forward of the main piston, and the thrust nut is rotatably coupled to the thrust nut at the front center of the piston head And a reset nut provided to adjust the position of the nut, and a cylinder partition wall is provided so that the cylinder body is divided into a space part in which the main piston is located, and the compressed air supplied to the main piston. Separately, the parking piston is provided to receive the compressed air when starting and running the vehicle, and the parking piston is maintained in a relaxed state.The ratchet wheel is fastened with a square screw inside the rear end of the parking piston. At the rear end of the ball bearing A ratchet holder provided with a ratchet supported by a ratchet spring, and a collar extending from the center of the ratchet to an outer side of the cylinder body and being in close contact with the outer ball bearing are reversed to be in close contact with the inner circumferential surface of the rear end of the cylinder body. It is made up of the East Wan lever and the parking spring enclosed on the outer circumference to advance the parking piston while the compressed air is exhausted.

1 and 2 are perspective views of a braking cylinder unit according to the first and second embodiments of the present invention, respectively;

3 is a cross-sectional view of the braking cylinder unit according to the first embodiment of the present invention;

4 is a cross-sectional view of a braking cylinder unit according to a second embodiment of the present invention;

5 is a cross-sectional view showing a vehicle driving state of a braking cylinder unit according to a second embodiment of the present invention;

6 is a cross-sectional view showing a commercial braking state of a braking cylinder unit according to a second embodiment of the present invention;

7 is a cross-sectional view showing a parking braking state of a braking cylinder unit according to a second embodiment of the present invention;

8 is a perspective view illustrating a state in which a brake cylinder according to a first embodiment of the present invention is mounted in a vehicle.

※ Explanation of symbols for main parts of drawing

T, T ′: Brake cylinder unit 50: Axle

60: wheel disk 70: caliper

100: cylinder body 102: trust bearing

103: ball bearing 104: thrust nut

105: bush 106: coupling spring

108: cylinder partition 114: main piston

116: return spring 118: tension sleeve

120: bellows 122: parking piston

124: parking spring 126: collar

130: sleeve 134: gear coupling

136: cone coupling 150: reset nut

160: adjusting spindle 161: spindle gear

162: control spring 164: control tube

166: set screw 170: manual release lever

172: Ratchet 174: Ratchet Holder

176: Ratchet Wheel 178: Ratchet Spring

200: piston head

Hereinafter, embodiments of the braking cylinder unit according to the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 are perspective views of a braking cylinder unit according to a first embodiment and a second embodiment according to the present invention, and FIG. 3 is a cross-sectional view of the braking cylinder unit according to the first embodiment of the present invention. . Braking cylinder unit (T) according to an embodiment of the present invention is configured to control the braking state of the vehicle during commercial use, by the compressed air supplied from the vehicle to the piston head 200 fastened to the cylinder body 100 The caliper (not shown), which is expanded and fastened to the outer circumferences of the cylinder body 100 and the piston head 200, generates a braking force to press and brake a wheel disc installed at a predetermined position of the axle. The inner side of the control tube 164 is fastened by the set screw 166, the control tube 164 is provided inside the thrust nut 104 is formed at one end of the inner side and the adjustment spring 162 is formed on the outer periphery. One end of the spindle gear 161 which is externally installed and is installed in the longitudinal direction at the center of the cylinder body 100 and is formed obliquely at the outer circumference of the body is fastened to the thrust nut 104, Cone coupling (136) on the oval is formed on the front end, and has a control spindle (160) fastened to the central portion of the piston head 200 is provided.

In addition, a gear coupling 134 contacting the outer circumferential inclined surface of the cone coupling 136 and a tension sleeve 118 for supporting the central axis of the adjustment spindle 160 are provided at the center thereof to supply compressed air. A main piston 114 which is advanced and stopped by a return spring 116 wound around the outer circumference of the control tube 164, a coupling spring 106 that is compressed by the advance of the main piston 114, and The control spindle 160, the thrust nut 104, and the piston head 200, which are moved forward by the compression force of the coupling spring 106, and the thrust nut 104 at the front center of the piston head 200. Is fastened to the rotational operation is possible is provided with a reset nut 150 that can adjust the position of the trust nut (104).

On the other hand, the operating state of the braking cylinder unit according to the second embodiment of the present invention is shown in Figs. As shown in the figure, the braking cylinder unit T 'according to the second embodiment of the present invention is provided with a braking cylinder that can be used for parking at the rear end of the commercial braking cylinder unit T of the first embodiment. Simultaneously used for commercial use and parking, the cylinder partition wall 108 is provided to be divided into the space portion where the main piston 114 is located in the cylinder body 100 and is supplied to the main piston 114. In addition to the compressed air is to be supplied with compressed air during the start-up and operation of the vehicle, the parking piston 122 is provided with a compressed air when the vehicle is running backwards to maintain a complete state of parking braking, this parking The rear end of the piston 122 is provided with a ratchet wheel 176 is fastened to the parking piston 122 by a square screw, and the ball bearing 103 is fitted to the inside and outside at the rear end of the ratchet wheel 176 and That The latch holder 174, the ratchet 172 is provided is supported by the ratchet spring 178 is provided in Amboise is provided.

At the center of the ratchet 172, the collar 126, which is extended to the outside of the cylinder body 100 and is in close contact with the outer ball bearing 103, is retracted to be in close contact with the inner circumferential surface of the rear end of the cylinder body 100. The manual release lever 170 is provided to release the ratchet 172 by manual operation. When the compressed air is exhausted due to the stop of the vehicle from the parking piston 122, the parking piston 122 is advanced. On the outer periphery, the parking spring 124 is formed.

The present invention having the configuration as described above is installed in a predetermined position of the axle 50 as shown in Figure 8 is made to brake the wheel disk 60.

On the other hand, the operation and operation of the embodiment of the present invention having the above-described configuration will be described below.

That is, the first embodiment of the present invention will be described together with the parking and commercial braking cylinder as the second embodiment of the present invention.

As shown in the figure, the braking cylinder unit T 'according to the second embodiment of the present invention is initially mounted on the vehicle in a state where the commercial and parking braking provided in the cylinder body 100 is completely completed. After the vehicle is mounted on the vehicle, compressed air is supplied from the compressed air supply line (not shown) to the braking cylinder unit T ', which is supplied by the pressure of the parking spring 124 wound around the outer circumference. The parking piston 122 which is in close contact with the cylinder partition wall 108 formed in the central portion of the cylinder body 100 is reversed.

The ratchet wheel 176 is fastened to the rear end of the parking piston 122 by a square screw due to the backward of the parking piston 122, and at the rear end of the ratchet wheel 176. The ratchet holder 174 and the ratchet 172 are provided with a ball bearing 103 fitted to the outside, a ratchet 172 supported by the collar 126 and the ratchet spring 178 which are in close contact with the outer ball bearing 103. In the center of the cylinder body 100, the manual release lever 170 is extended to the rear and the rear is reversed together with the parking piston 122, due to this backward collar 126 is the center of the cylinder body 100 It comes in close contact with the rear end.

As such, when compressed air is continuously filled in the cylinder body 100, the parking piston 122 is retracted so that the parking spring 124 is further compressed, and the parking piston 122 is more than the ratchet wheel 176. The rotational force is transmitted, and the rotational force pushes out the ratchet 172 that restrains the ratchet wheel 176, while the ratchet wheel 176 is released from the ratchet 172 and rotates in a clockwise direction. The vehicle is reversed to the piston stroke to wait for a parking braking state, and a ball bearing 103 is provided between the ratchet wheel 176 and the collar 126 to minimize friction during operation.

As described above, when the parking piston 122 is maximally retracted to the piston stroke, when the vehicle does not apply any action force to the main piston 114, the vehicle is normally operated, and at this time, the inner center of the main piston 114 Applied stroke between the thrust bearing 103 of the tip of the cone coupling 136 of the adjustment spindle 160 inserted into the thrust nut 104 coupled to the gear formed at the outer periphery of the body of the adjustment spindle 160. It is shown in Figure 5 that the 'A' is maintained, the bellows is fastened between the cylinder head 200 and the cylinder body 100 when it is necessary to adjust the application stroke 'A' as needed After disassembling 120 and releasing the set screw 166 between the front end of the cylinder body 100 and the control tube 164, the control tube 164 rotates counterclockwise. Dragon stroke 'A' becomes long and can be adjusted by turning it clockwise to shorten it.

When the vehicle is operated in a state in which parking braking is completed as described above, when the main brake is operated, compressed air is supplied into the cylinder of the main piston 114, and the main piston 114 moves forward by the supply of the compressed air. As a result, the adjusting spindle 160, the thrust nut 104, and the piston head 200 move forward by the inflating force of the coupling spring 106, which is compressed, to move by the applied stroke “A”. When the compressed air is continuously supplied into the cylinder of the main piston 114, the main piston 114 is advanced, and when the force is increased, the reaction force of the adjustment spring 162 fitted to the outer periphery of the thrust nut 104 is coupled. Cone coupling 136 is advanced as the thrust nut 104 is advanced as the ring spring 106 is larger than the reaction force and the gear coupling 134 of the main piston 114 and the cone coupling 136 of the adjusting spindle 160 are released. And piston head (20 The maximum braking force is generated while increasing the output at 0). At this time, the braking force is exerted while advancing the deformation stroke 'E' by the elasticity of the device between the rear end of the control tube 164 and the rear end of the thrust nut 104. As a result, the total braking force is the sum of the applied stroke 'A' and the moving distance of the cone coupling 136 and the amount of deformation 'E' due to elasticity, as shown in FIG. 6.

The adjustment spindle 160 is rotated by the reaction force of the adjustment spring 162, wherein the rotational force is proportional to the reaction force of the coupling spring 106, to move momentarily to the 'S' stroke, which is an excessive or wear interval After advancing to the 'S' stroke, the control spindle 160 is in close contact with the cone coupling 136 to increase the output to the thrust nut 104 and the piston head 200 to generate a braking force. In this case, when the wear or the excessive interval occurs, the operation is automatically activated so that a proper braking force is always generated.

On the other hand, after the compressed air is continuously injected into the cylinder of the main piston 114, the maximum braking force is generated, the sleeve 130 is limited by the control tube 164, the reaction force of the adjustment spring 162 is adjusted There is no effect on the spindle 160, the compressed air inside the cylinder is exhausted, the main piston 114 is released, so that the coupling spring 106 is the coupling coupling of the adjustment spindle 160 136 and gear coupling 134 are engaged and eventually the main piston 114 is relaxed by the stroke distance acted upon by the cone coupling 136 to return to the original vehicle operating position.

Meanwhile, hereinafter, the parking braking will be described. When the air in the cylinder that compresses the parking piston 122 is exhausted, the parking spring 124 moves the parking piston 122 forward and is blind to the parking piston 122. Ratchet wheel 176 is fastened with a screw is the rotation is constrained by the ratchet 172, so the ratchet holder 174 applies the parking brake force to the main piston 114 through the ball bearing 103, the main piston Proceeding to 114 to generate a braking force to the piston head 200 through the same process as the conventional braking, the state is shown in detail in FIG.

When the manual braking is required after the parking braking is engaged, the ratchet 172 restraining the ratchet wheel 176 when the manual loosening lever 170 extended in the center of the ratchet 172 is pulled out. At the same time as the ratchet wheel 176 is released, the ratchet wheel 176 is instantaneously rotated clockwise by the reaction of the parking spring 124 and the return spring 116 to return to the relaxed position and the parking brake is released. . In addition, since the reset nut 150 is fixedly fastened to the thrust nut 104 and rotates in the clockwise direction, the thrust nut 104 takes a position to be reset by a screw while idling. In the braking cylinder unit of the present invention, braking is performed by pressing the wheel disc 60 by the action of the caliper 70 provided on the outer circumference of the cylinder body 100 and the outer circumference of the piston head 200.

As described above, the braking cylinder unit according to the present invention is provided in the cylinder body in the longitudinal direction of the cylinder body and is provided with a control spin formed with a spiral gear formed on the outer periphery of the body and operated by compressed air supplied into the cylinder. The cylinder head is moved forward by the piston and the center of the cylinder is fastened to the front end of the adjusting spindle, and the parking piston is provided at the rear end of the cylinder where the main piston is installed by the cylinder wall. The piston is to be relaxed when driving the vehicle, but to operate when the compressed air is exhausted due to the vehicle stop, and to be able to operate it manually.The structure is simple and easy to install on the axle, and the braking force is assured. Automatically in case of excessive or excessive wear between wheel disc and pad It improves the stability of the vehicle's operation, and in particular, commercial and parking braking are formed integrally so that the driver's safety can be maintained even when the vehicle is not running and abnormal compressed air is not supplied. It will have a useful effect to ensure maximum.

Claims (2)

In the braking cylinder unit (T) configured to brake the wheel disk (60) installed at a predetermined position of the axle by expanding the piston head (200) fastened to the cylinder body (100) by the compressed air supplied from the vehicle. The control tube 164 is fastened by the set screw 166 inside the cylinder body 100, the control tube 164 is provided inside and a vertical gear is formed at one end thereof, and an adjustment spring 162 is formed on an outer circumference thereof. ) Is provided with a thrust nut 104 and one end of the spindle gear 161 which is installed in the longitudinal direction at the center of the cylinder body 100 and spirally formed on the outer periphery of the body part is fastened to the thrust nut 104. The front end supports the control spindles 160 provided with the semi-elliptic cone coupling 136, the gear coupling 134 and the center axis of the adjustment spindle 160 which are in contact with the outer circumference of the cone coupling 136. The tension sleeve 118 is provided at the center thereof and is compressed by the supply of compressed air, and the compression piston 160 and the thrust nut 104 are compressed by the advance of the main piston 114. ) And to move the piston head 200 forward And a reset nut 150 rotatably coupled to the thrust nut 104 at the center of the front of the piston head 200 to adjust the position of the thrust nut 104. A braking cylinder unit for a railway vehicle, characterized by the above-mentioned. The method of claim 1, A cylinder partition 108 is provided such that the cylinder body 100 is divided into a space portion in which the main piston 114 is located, and the compressed air is supplied to the cylinder body 100 separately from the compressed air supplied to the main piston 114. The parking piston 122 is provided to maintain the state in which the parking brake is relaxed by reversing by the supply of the ratchet wheel. The ratchet wheel 176 and the ratchet wheel which are fastened by square screws inside the rear end of the parking piston 122. A ratchet holder 174 having a ratchet 172 supported by a ball bearing 103 fitted inside and outside at a rear end of the head 176 and a ratchet spring 178 provided at a central portion of the ball bearing 103; The collar 126 is extended from the center of the ratchet 172 to the outside of the cylinder body 100 so as to be in close contact with the outer ball bearing 103, and is backward being in close contact with the inner peripheral surface of the rear end of the cylinder body 100. Manual Release Lever (170) , Railway vehicle braking cylinder unit, characterized in that as the compressed air is discharged from the parking piston (122) composed of a parking spring 124 gwinchwi the outer periphery so as to move the parking piston (122).