KR101573776B1 - Braking indicator for a railway vehicle - Google Patents

Abstract

A braking indicator for a railway vehicle according to the present invention comprises: a main body which comprises a supply unit to which an air pressure is supplied by braking of a railway vehicle and a see-through window disposed on a front surface thereof, wherein a cover opens and closes the inside thereof; a cylinder detachably installed in the main body, whose entrance is connected to the supply unit to maintain air-tightness; a piston which is installed in the cylinder to slide while maintaining air-tightness, moves by the air pressure supplied into the cylinder through the supply unit, and returns by an elastic force when supply of the air pressure is stopped; a display plate which is fixed on the piston to move with the piston, and allows a user to check whether the railway vehicle brakes according to a position of the piston through the see-through window; and a diaphragm sensor installed in the main body, provided with a flow passage formed therein to supply the air pressure supplied through the supply unit to the inside thereof, and operated by the air pressure transferred through the flow passage to output an electric signal. According to the present invention, the cylinder, the piston, etc. can be easily assembled. Expenses and time for maintenance and repair can be reduced. Manufacturing costs can be reduced and reliability of operation can be improved by a simplified structure.

Description

[0001] The present invention relates to a brake indicator for a railway vehicle,

The present invention relates to a brake indicator of a railway vehicle. More particularly, the present invention relates to a brake indicator of a railway vehicle that is excellent in assembling performance of a cylinder and a piston, and can reduce the time and cost required for maintenance and repair.

Generally, a brake indicator is installed in a high-speed railway vehicle or the like. The braking indicator is used to check whether the braking is applied to the maintenance workshop or the vehicle that is stopped at the station. If there is no braking indicator, the inspector should go directly under the vehicle and check whether the brake lining is tight. Since it is difficult and follows the risk, an indicator is installed on a railroad car to easily identify whether or not to brak.

The braking indicator basically confirms whether or not the brake lining is in close contact. If the lining is in close contact, it indicates that the brake is in the braking state, and if the lining is in the relaxed state, the brake is in the non-braking state.

The conventional braking display device confirms whether the braking operation is possible through the limit switch operated by the movement of the piston which responds to the braking pressure. Such a limit switch frequently causes trouble due to repetitive contact and jamming, Causing a problem in that it takes much time and cost to maintain and repair. Further, in the conventional braking display device, since the depressing portion of the limit switch operates up and down, there is a problem that the operation reliability is remarkably lowered due to the occurrence of an operation abnormality even if the interval of the depressing portion is slightly adjusted.

In order to solve such a problem, Korean Patent Registration No. 10-0890272 discloses a "braking indicator of a railway vehicle" as another prior art technique, which has a pneumatic line supplied with pneumatic pressure in accordance with brake braking, And a cylinder connected to a pneumatic line in the braking display body, a piston moving along the inside of the cylinder, and a spring for resiliently moving the piston in the cylinder, And a second display panel that is statically fixed to correspond to the first display panel and identifies a braking braking pressure drop state, wherein the braking braking state is detected by an electrical signal A brake indicator of a railway vehicle A fluid induction hole formed in the pneumatic line to induce a fluid flowing along the pneumatic line, and a pressure drop fluid flowing along the pneumatic line through the fluid induction hole to be reacted and generated as an electrical signal A sensor, and a coupling portion for coupling the sensor to the outside of the brake indicator body. Here, the sensor is constructed by coupling a diaphragm type sensor to the fluid induction hole.

However, in the disclosed prior art, it is difficult to assemble the components such as the piston and the cylinder, and thus it takes a lot of time for maintenance and repair, and the cost increases, and the manufacturing cost is increased due to the complicated structure , There is a limitation in increasing the reliability of the operation.

In order to solve the above-mentioned conventional problems, there is an object to provide a cylinder and a piston which are excellent in assembling performance, reduce cost and time required for maintenance and repair, reduce manufacturing cost, and improve operation reliability .

According to one aspect of the present invention, there is provided a railway vehicle comprising: a main body having a supply port through which a pneumatic pressure is supplied by braking of a railway vehicle, a front window provided with a cover, and an inner side opened and closed by a cover; A cylinder detachably installed in the main body and connected to the supply port so as to maintain airtightness; A piston slidably installed in the cylinder while maintaining airtightness and moved by a pneumatic pressure supplied to the inside of the cylinder through the supply port and returning by an elastic force when the supply of the pneumatic pressure is stopped; A display panel that moves together with the piston by being fixed to the piston and allows the user to check whether the braking operation is performed according to the position of the piston through the viewing window; And a diaphragm-type sensor installed in the main body, the diaphragm-type sensor having a flow path formed therein to supply air supplied through the supply port and outputting an electrical signal by operating the air pressure transmitted through the flow path, Is provided.

Wherein the display panel corresponding to each of the viewing windows is provided on the inside of each of the cylinders, and the display panel corresponding to each of the viewing windows is provided on the inside of each of the cylinders, And an isolation space connected to each of the supply ports is provided in the main body so as to be isolated from each other and the diaphragm type sensor is connected to each of the isolation spaces.

The main body is provided so that the supply port and the transparent window are symmetrical to each other, and each of the cylinder, the piston, the display panel, and the diaphragm type sensor is installed to be symmetrical in the main body.

A first mounting portion for mounting the end of the piston in a detachable manner is formed on an inner side surface of the cover, and the end of the cylinder is fixed to the inner surface of the cover by a sealing member And a second mounting portion for detachably mounting to be connected to the supply port while keeping airtight is formed.

The main body is formed to protrude from the cover so that a sensor mounting portion to which the diaphragm type sensor is screwed is aligned with the cylinder.

The piston being provided inside the cylinder so that the head is hermetically sealed by a sealing member and the display panel is fixed by the display panel fixing portion; A spring installed inside the head tube; And a piston rod fixed to an end of the spring and supported inside the body.

The cylinder is formed on the side portion with a moving groove for providing a passage for moving the display plate fixing portion.

Wherein the diaphragm type sensor includes: a sensor body having the flow path formed therein, the sensor body being screwed to the body, and a working space connected to the flow path formed inside; A diaphragm installed to divide the working space into a first space connected to the flow path and a second space isolated from the flow path; A working rod slidably mounted on a base installed in the second space and moved by a diaphragm moving by a pneumatic pressure supplied through the flow path; A movable contact fixed to an end of the operating rod and installed in the second space; A plurality of fixed contacts installed in the second space to contact the movable contact by movement of the operating rod; And a return spring that provides an elastic force such that the movable contact is separated from the fixed contact when supply of the pneumatic pressure is interrupted.

According to the brake indicator of the railway vehicle according to the present invention, it is possible to reduce the cost and time required for maintenance and repair, and to reduce the manufacturing cost by simplifying the structure. Reliability can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of an embodiment of a brake rail of a railway vehicle according to the present invention. FIG.
FIG. 2 is a front view showing a braking indicator of a railway vehicle according to an embodiment of the present invention.
FIG. 3 is a front view showing a piston of a braking indicator of a railway vehicle according to an embodiment of the present invention.
FIG. 4 is a cross-sectional view showing a diaphragm type sensor of a braking indicator of a railway vehicle according to an embodiment of the present invention.
5 is a front view showing a braking indicator of a railway vehicle according to an embodiment of the present invention.
FIG. 6 is a cross-sectional view of a diaphragm sensor of a braking indicator of a railway vehicle according to one embodiment of the present invention, showing a timing diagram.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a computer system according to an embodiment of the present invention; It is to be understood that this particular embodiment is not intended to limit the invention but includes all modifications, equivalents, and alternatives falling within the spirit of the invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or corresponding elements, and redundant description thereof will be omitted do.

FIG. 1 is a front view of a railway vehicle according to an embodiment of the present invention, and FIG. 2 is a front view showing a brake indicator of a railway vehicle according to an embodiment of the present invention. .

1 and 2, a braking indicator 100 of a railway vehicle according to an embodiment of the present invention includes a main body 110, a cylinder 120, a piston 130, a display panel 140, and a diaphragm type Sensor 150. < / RTI >

The main body 110 is provided with a supply port 111 through which a pneumatic pressure is supplied by braking of the railway car, for example, and a transparent window 112 having a transparent or light transmitting property is provided on the front surface thereof. A plurality of bolt fixing portions 114 may be provided to fix the cylinder 120 and the piston 130 within a range capable of operating, Fixing projections or fixing grooves or the like may be formed on the inner side.

The main body 110 may have a structure for installing the cylinder 120, the piston 130, the display panel 140, and the diaphragm type sensor 150, respectively, so as to form a single brake indicator of the railway vehicle, Alternatively, the double braking indicator of the railway vehicle can be configured by having a structure in which the cylinder 120, the piston 130, the display panel 140, and the diaphragm type sensor 150 are installed in pairs, In this embodiment, a double-braking indicator of a railway vehicle is shown as an example.

The braking indicator 100 of the railway vehicle according to an embodiment of the present invention is configured to be composed of a pair of a supply port 111 and a sight window 112 provided in the main body 110, A display panel 140 corresponding to each of the viewing windows 112 is fixed for each piston 130 installed inside each of the cylinders 120 and a supply port 111 The diaphragm sensor 150 is installed in each of the isolation spaces 117 so that the diaphragm sensor 150 is connected to each of the isolation spaces 117. Each of the cylinder 120, the piston 130, the display panel 140, and the diaphragm sensor 150 may be provided in the main body 110 110 so as to be symmetrical.

The main body 110 may have a supply port 111 formed in a cover 113 that is openable and closable by a bolt or the like to open the inside of the main body 110. The end of the piston 130 may be detachably mounted The first mounting portion 115 may be formed on the inner surface of the cover 113 so that the end of the cylinder 120 is connected to the supply port 111 in a state of being hermetically sealed by the sealing member 122, A second mounting portion 116 for mounting can be formed. The main body 110 may be formed to protrude from the cover 113 so that the sensor mounting portion 113a to which the diaphragm type sensor 150 is screwed is aligned with the cylinder 120. [ Here, the sensor mounting portion 113a may be formed with a first screw fitting portion 113b, for example, a female screw portion, so as to be screwed to the diaphragm-type sensor 150. [

The main body 110 may be provided with an isolation space 117 inside to provide a passage for the supply port 111 to be connected to the entrance 121 of the cylinder 120, A pneumatic line may be connected so that air pressure is supplied from the pneumatic source of the railroad vehicle during brake operation. On the other hand, when the second screw engagement portion 151a provided in the form of a male screw portion for screw engagement with the diaphragm type sensor 150 is engaged with the first screw engagement portion 113b, The isolation space 117 may be formed so as not to cause interference, or the supply port 111 or the first screw engagement portion 113b may be disposed.

The cylinder 120 is detachably installed in the main body 110, and the inlet 121 is connected to the supply port 111 so as to maintain airtightness. The cylinder 120 may have a bottleneck portion for increasing the pneumatic pressure supplied to the piston 130 at the entrance 121 side as in the present embodiment. When the display panel 140 reciprocates with the piston 130, A moving groove 123 may be formed on the side portion where the connection portion of the display plate 140 and the piston 130, that is, the plate fixing portion 131, is received inside and provides a passage for moving while avoiding interference.

As shown in FIGS. 1 to 3, the piston 130 is slidably installed in the cylinder 120 while keeping the airtight. The piston 130 is moved by the air pressure supplied through the supply port 111, When the supply is stopped, it is restored by the elastic force. The piston 130 is mounted to the inside of the cylinder 120 so that the head 133 is hermetically sealed by a sealing member 134 such as an O-ring and the display panel 140 is fixed to the display panel fixing portion 131. [ A spring 135 provided on the inner side of the head tube 132 and a spring 135 fixed to the end of the spring 135 using an interference fit or a fixing member and fixed to the inside of the main body 110, And a piston rod 136 having an end detachably mounted on and supported by the piston 115. The display panel fixing part 131 fixes the display panel 140 to the head tube 132 by various structures and methods including a tight fitting structure and a screw fastening structure and controls the display panel 140 Is spaced apart from the head tube 132 and fixed.

The display panel 140 moves together with the piston 130 by being fixed to the piston 130 so that it can be checked whether the piston 130 is braked or not according to the position of the piston 130 through the sight window 112. A separate fixed display panel may be further provided on the inside of the main body 110 or on the cylinder 120 depending on the position of the piston 130. The separate fixed display panel may be exposed or blocked from the viewing window 112 by the display panel 140. When the display panel 140 is in a green color, the fixed display panel can display the red color so that it can be easily operated. For example, the fixed panel is exposed to the outside through the non-breaking simultaneous viewing window 112 , And the display panel 140 may be covered by the display panel 140 by being exposed to the viewing window 112 when the brake is applied.

4, the diaphragm type sensor 150 is installed in the main body 110, and the flow path 151d is formed so that the pneumatic pressure supplied through the supply port 111 is supplied inward. The flow path 151d, And outputs an electrical signal.

The diaphragm type sensor 150 includes a sensor body 151 formed with an oil passage 151d and screwed to the body 110 and having an operation space 151b or 151c connected to the oil passage 151d, A diaphragm 152 installed to partition the working spaces 151b and 151c into a first space 151b connected to the oil passage 151d and a second space 151c isolated from the oil passage 151d, An operating rod 153 which is slidably mounted on a base 153a provided in the housing 151c and moves by the diaphragm 152 which is moved by the air pressure supplied through the oil line 151d, And a plurality of fixed portions 152b provided in the second space 152c so as to be in contact with the movable contact 154 by the movement of the operating rod 153. [ The contact 155 and the movable contact 154 when the supply of the air pressure is interrupted is separated from the fixed contact 155 And may include return spring 156.

The sensor body 151 may be provided with a screw groove 151e on the side supporting the end of the return spring 156. The adjustment screw 157 is screwed into the screw groove 151e so as to support the return spring 156 so as to adjust the elastic force of the return spring 156 by the rotation operation of the adjustment screw 157, The return force of the movable contact 154, the operating rod 153 and the diaphragm 152 can be adjusted.

The diaphragm 152 may be made of a material such as rubber or synthetic resin which can be bent and can be restored and may have a shape forming part of a half or a sphere and an edge may be formed on the inner side of the sensor body 151 and the base 153a So that the first and second spaces 151b and 151c can be separated from each other.

The fixed contacts 155 may be electrically connected to the terminals 155a and 155b exposed from the sensor body 151 and electrically connected to each other by the movable contacts 154. [ And outputs an electric signal by causing the current input from one of the terminals 155a and 155b to be output from the other.

The operation of the braking display 100 of the railway vehicle according to one embodiment of the present invention having such a configuration will be described.

The braking indicator 100 of the railway vehicle according to the present invention performs mechanical operation and electrical operation at the same time depending on braking of the railway vehicle, and displays them on the outside. Therefore, the brake 130 is not operated in the cylinder 120 because the air pressure is not supplied through the supply port 111 at the same time when the railway vehicle is not braked, So that the piston 130 in the cylinder 120 is operated. That is, the piston 130 in the cylinder 120 receives the state of the railway vehicle through the fluid according to whether the railway vehicle is braked or not. In addition, when the brake of the railway vehicle is operated, pneumatic pressure is supplied from the pneumatic supply source of the railway vehicle to the air pressure port 111 through the air pressure line. In addition, in response to the air pressure fluctuation caused by the brake operation of the railway vehicle, To the supply port 111 through the pneumatic line in a variety of ways, such that the piston 130 can be operated.

2 and 4, the braking indicator 100 of a railway vehicle according to the present invention is configured such that the head tube 132 of the piston 130 is biased by the elastic force of the spring 135 The movable contact 154 is fixed by the resilient force of the return spring 156 so that the movable contact 154 is mechanically fixed to the movable contact 154 by the resilient force of the return spring 156. [ It is not disturbed from the contact point 155 to inform the onboard computer of the non-brake state.

As shown in FIGS. 5 and 6, when braking the railway vehicle, the air pressure supplied from the air pressure supply source to the supply port 111 through the air pressure line according to the braking of the brake causes the head tube 132 are moved in the opposite direction while compressing the spring 135 to cause the indicator plate 140 to move out of the sight window 112 (shown in FIG. 1) to mechanically indicate that the brake is in the braking state, The diaphragm 152 moves the operating rod 153 so that the movable contact 154 is brought into contact with the fixed contact 155, Thus, an electric signal is output to the on-board computer through the terminals 155a and 155b to thereby electrically inform the brake braking state.

On the other hand, if the display panel 140 is exposed through the see-through window 112, that is, whether the display panel 140 is displayed through the sight window 112 during braking and braking, And a fixed display panel as described above may be used together with the display panel 140. [0064] FIG.

As described above, according to the brake display device of the railway car according to the embodiment of the present invention, the assembling performance of the cylinder and the piston is excellent, and the cost and time required for maintenance and repair can be reduced. It is possible not only to reduce the unit price but also to improve the reliability of the operation.

Although the present invention has been described with reference to the accompanying drawings, various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the above-described embodiment, but should be determined by the claims and equivalents thereof.

110: main body 111: supply port
112: see-through window 113: cover
113a: sensor mounting portion 113b: first screw coupling portion
114: bolt fixing portion 115: first mounting portion
116: second mounting portion 117: isolation space
120: cylinder 121: entrance
122: sealing member 123: moving groove
130: piston 131:
132: head tube 133: head
134: sealing member 135: spring
136: piston rod 140:
150: diaphragm type sensor 151: sensor body
151a: second screw coupling portion 151b: first space
151c: second space 151d:
151e: screw groove 152: diaphragm
153: Working rod 153a: Base
154: movable contact point 155: fixed contact point
155a, 155b: terminal 156: return spring
157: Adjusting screw

Claims (7)

A main body 110 provided with a supply port 111 through which air pressure is supplied by braking of a railway vehicle, a front window 112 provided on the front side, and a rear side opened and closed by a cover 113;
A cylinder 120 detachably installed in the main body 110 and connected to the supply port 111 so as to maintain the airtightness of the inlet 121;
The cylinder 120 is slidably installed in a state where the airtightness is maintained in the cylinder 120 and moves by the air pressure supplied to the inside of the cylinder 120 through the supply port 111, A piston (130) which is returned by the piston (130);
A display panel 140 that moves together with the piston 130 by being fixed to the piston 130 and allows the operator to check whether the piston 130 is braked according to the position of the piston 130 through the viewing window 112; And
A flow path 151d is formed in the main body 110 so that pneumatic pressure supplied through the supply port 111 is supplied to the inside and is operated by pneumatic pressure transmitted through the flow path 151d, A diaphragm type sensor 150 for outputting; Lt; / RTI >
The supply port 111 and the see-through window 112 provided in the main body 110 are each formed as a pair and the cylinder 120 is connected to each of the supply ports 111, 112 are fixed to each piston 130 installed inside each of the cylinders 120 and each of the isolation spaces 117 connected to each of the supply ports 111 is fixed to each other And the diaphragm type sensor 150 is installed in each of the isolation spaces 117 so as to be connected to the diaphragm type sensor 150,
The main body (110)
A first mounting portion 115 is formed on the cover 113 to receive the supply hole 111 and an inner end of the piston 113 is detachably mounted on the inner surface of the cover 113, And a second mounting portion 116 is formed on the side surface of the cylinder 120 so that the end of the cylinder 120 can be detachably attached to the supply port 111 while being hermetically sealed by the sealing member 122. [ Braking indicator of railway vehicle. delete delete delete The method according to claim 1,
The piston (130)
A head tube 132 installed inside the cylinder 120 so as to maintain airtightness by a sealing member 134 and the display panel 140 being fixed by a display panel fixing part 131;
A spring 135 installed inside the head tube 132; And
A piston rod 136 fixed to an end of the spring 135 and supported inside the main body 110;
Wherein the braking indicator of the railway vehicle is a braking indicator. The method of claim 5,
The cylinder (120)
And a movement groove (123) for providing a passage for moving the display panel fixing portion (131) is formed on the side portion. The method according to claim 1,
The diaphragm type sensor (150)
A sensor body 151 in which the flow path 151d is formed and which is screwed to the main body 110 and in which operation spaces 151b and 151c connected to the flow path 151d are formed inside;
A diaphragm 152 installed to divide the operating spaces 151b and 151c into a first space 151b connected to the oil passage 151d and a second space 151c isolated from the oil passage 151d;
A working rod 153 slidably mounted on a base 153a provided in the second space 151c and moved by a diaphragm 152 which is moved by pneumatic pressure supplied through the flow path 151d;
A movable contact 154 fixed to an end of the operating rod 153 and installed in the second space 151c;
A plurality of fixed contacts 155 installed in the second space 152c to contact the movable contact 154 by movement of the operating rod 153; And
A return spring 156 for providing an elastic force such that the movable contact 154 is separated from the fixed contact 155 when supply of the air pressure is interrupted;
Wherein the braking indicator of the railway car is a braking indicator.

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