JPH0214968A - Parking brake device for railway vehicle - Google Patents

Abstract

PURPOSE:To confirm visually the operating parking brake from the outside without riding on a cab to prevent a vehicle from travelling due to the forgetfulness of loosening the brake by providing an arm interlocked with a parking brake and projecting largely from the side of a chassis outside a car body. CONSTITUTION:An arm 9 interlocked mechanically with the operation of a parking brake and projecting largely from the side of a chassis 2 is mounted on the outside of a car body. Also, the width of a tip of the projecting arm 9 and the dimension of the height of the arm are enlarged and a conspicuous color, for example red or white one, different from that of a chassis is applied to that portion. Thus, even if the car is left under the condition of exhausted power supply, a sign during the operation of parking brake is continued by the mechanical inter-lock with said brake. Further, whether or not the parking brake is operated can be discriminated easily as viewed from the outside without entering a cab.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a brake system for a railway vehicle, and particularly to a parking brake system.

[Conventional technology]

The parking brake device for railway vehicles was developed in U.S. Pat. No. 53-1484.
As described in the No. 07 publication, the indicator indicating the operation was intended for those in the driver's cabin. In addition, as shown on the same side, there were also cases in which the vehicle itself was prevented from moving.

[Problem to be solved by the invention]

In the above conventional technology, when the parking brake is applied and a parked vehicle is moved while being guided by another vehicle, in order to avoid entering the driver's cabin of that vehicle, the parking brake is not noticed that the parking brake is being applied. Because the wheels were forced to move while the wheels were still acting, there was a high possibility that the wheel treads would be damaged. Note that even if an interlock function is provided to prevent the vehicle from moving while the parking brake is applied, it is insufficient to prevent other vehicles from indexing the vehicle. Furthermore, since it is common for railway vehicles to turn off all power supplies when parked for long periods of time, mechanisms that use power sources such as indicator lights to indicate the parking brake function cannot function satisfactorily as indicators. There were many things.

The object of the present invention is to enable the display indicating that the parking brake is being applied to be easily detected by simply looking from the outside of the vehicle without being in the driver's cab, and to maintain the display at all times because no power source is used. An object of the present invention is to provide a parking brake device that prevents accidents caused by forgetting to release the parking brake.

[Means to solve the problem]

In order to achieve the above purpose, an arm that protrudes largely from the side of the truck in conjunction with the parking brake action is provided on the part of the truck outside the vehicle body, and the protruding action of this arm is made to move when the parking brake is applied. It should be mechanically interlocked with mechanical movements such as link mechanisms. The tips of the protruding arms can be made wider, taller, or both to make them larger and to make them stand out with red or white. Paint it an easy color. Furthermore, since the protruding arm protrudes from the side of the vehicle only when the vehicle is parked, it becomes possible to protrude beyond the vehicle limit dimensions that a railway vehicle must normally comply with. Note that when the parking brake is released, the protruding arm should be returned to the same position as the other parts of the truck, such as right next to the truck frame.

[Effect]

In the present invention, an arm is provided that protrudes from the truck to the side, and the tip of the arm is made large and colored so that the parking brake action can be easily noticed without entering the driver's cabin. It is something. The reason why this arm is mechanically connected to the parking brake is so that the display will continue even if the vehicle is left unattended, such as when the power is turned off.

〔Example〕

When moving or operating a parked railway vehicle, it is essential to walk around the vehicle and check for danger, and most railways do this. It is strictly protected. However, although it is a rule in many railways to enter the driver's cabin and check whether the parking brake is released, this is not always followed when the vehicle is moved within the premises. If you move the vehicle while the parking brake is strongly applied, the axle will not rotate and will slide on the rail surface, causing a problem called tire flat, where the wheel tread will partially wear flat, causing the vehicle to move while driving. This may cause abnormal vibration.

The parking brake of a railway vehicle is normally operated by a parking brake handle or the like disposed in the driver's cab, as shown in 3 in the outline drawing of the railway vehicle in FIG. In the past, parking brakes were often activated by pulling the other end of a rope or chain drawn from a trolley, but in recent years, the restoring force of a spring has been used to make it easier to operate. The use of spring-type parking brakes is increasing. With this spring type, it is easier to generate a larger parking brake force than with conventional methods, and as a result, if the vehicle is moved while the brake is activated, the damage to the wheels tends to be greater. .

FIG. 2 shows an example in which the present invention is applied to a spring-type parking brake. When the parking brake is operated, the air that was holding down the spring in the 7-spring cylinder is discharged, and the restoring force of the spring pulls the end of the lever 6, and the link 5 connected to the other end of the lever 6 is pulled. This is an example in which the parking brake is applied to a structure in which the four air brake cylinders do not operate, but the brake operates to generate the necessary parking brake force.

In this example, the arm 9 rotates greatly due to the movement of the connecting rod 8 connected to the lever 6, and largely protrudes from the cart 2 to the side. The position after the arm protrudes can be greatly exceeded without being subject to the vehicle limits, which must be strictly adhered to in railway vehicles. In other words, since the vehicle does not run while the parking brake is applied, the vehicle limits that must be observed in order to drive have lost their reason.

According to this embodiment, a display sufficient to indicate the operating state of the parking brake can be easily recognized from outside the vehicle without entering the driver's cab, and the display is displayed when all power is turned off. It can be maintained continuously without disappearing even if left for a long period of time.

Another embodiment is shown in FIG. This example is also an example applied to a structure using the spring cylinder 7.

The rod 10 protruding from the spring cylinder 7 moves in the direction of being drawn into the cylinder when the parking brake is applied. At this time, due to the action of the connecting rod 8 connected to a part of the iron 10, the arm 9 largely protrudes from the cart 2 to the side as in the previous example.

Furthermore, the present invention can be attached to the link at the final end of the rope or chain even in the above-mentioned conventional rope or chain tensioning structure.

Furthermore, if the present invention is used in conjunction with conventional display inside the driver's cabin and interlock with the power circuit, the effect of the vehicle as a whole will be increased.

〔Effect of the invention〕

According to the present invention, since it is possible to check whether the parking brake is working or not without going up to the driver's cab, it is possible to prevent the driver from forgetting to release the parking brake and moving the vehicle.

[Brief explanation of the drawing]

FIG. 1 is a side view of one embodiment of the invention, FIG. 2 is a side view of another embodiment of the invention, and FIG. 3 is a side view of a railway vehicle. 8...Connecting rod, 9...Arm. Fig.('l)

Claims (1)

[Scope of Claims] 1. A parking brake device for a railway vehicle, characterized in that a portion of the truck where the brake operates is provided with an arm that protrudes to the side of the truck in conjunction with the action of the parking brake. 2. In claim 1, the width or the dimension in the height direction of the tip of the protruding arm is increased, and a color different from the basic color of the trolley is arranged in that part. A parking brake device for a railway vehicle characterized by: 3. A railway vehicle according to claim 1, wherein the tip of the protruding arm protrudes more toward the side of the vehicle than other portions of the bogie. Parking brake device. 4. The railway vehicle according to claim 3, wherein when the parking brake is not applied, the end of the arm can move so that it is at approximately the same position as other bogie components. parking brake device. 5. The parking for a railway vehicle according to claim 3, wherein the end position of the protruding arm is movable so as to be located beyond a vehicle limit range allowed for the railway vehicle. Brake device. 6. A parking brake for a railway vehicle according to claim 1, characterized in that the parking brake is directly mechanically connected to a link or the like that inevitably moves when the parking brake is activated in order to interlock with the action of the parking brake. Device.