JPH10203365A - Brake equipment - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To reduce the weight of a bogie, simplify the bogie structure, and to facilitate maintenance and inspection. Efficiently perform braking force and tread cleaning. SOLUTION: A brake body A attached to a bogie 1 and a lining 9a, 9b which constitutes the brake body A and brake disks 8a, 8b of wheels 6 are used to brake and release the wheels 6. An operating hydraulic piston 7 is provided, and a hydraulic tread cylinder 14 attached to the brake body A is operated so as to separate the tip end grinding element 15 from the tread surface of the wheel 6 to clean the tread surface. A high pressure hydraulic pressure is supplied from the supply source 12 to the hydraulic piston 7 and the hydraulic tread cylinder 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake device having a function of cleaning the tread of a wheel during running or braking of a railway vehicle.

[0002]

2. Description of the Related Art A conventional brake device capable of cleaning the tread surface of a wheel is disclosed in, for example, Japanese Patent Publication No. 52-24285.

[0003] In this method, an upper end of an abrasive rod suspension having a cleaning abrasive pivoted at a lower portion thereof is pivotally supported on a raw lever of a braking mechanism pivotally connected to a brake pedal supported by the brake pedal suspension, and one end is attached to the raw lever. And one end of an actuating member, the other end of which is guided by the brake shoe suspension, is connected to a latch lever of the abrasive suspension via a link.

According to this, each end of the brake cylinder, the brake shoe suspension, and the dead lever is supported on the bogie, and pressurized air is supplied into the brake cylinder to pinch the live lever and the dead lever. By pressing the brake on the tread of the wheel,
At this time, a grinding wheel arranged on the same axis as the brake shoe was pressed against the wheel tread.

[0005]

However, in such a conventional brake device, it is necessary to attach one end of each of a brake cylinder, a brake shoe suspension, and a dead lever to a bogie frame using pins or the like. The mounting bracket must be mounted or fixed to the bogie frame, which causes a problem that the structure of the bogie frame becomes complicated, maintenance and maintenance man-hours increase, and the bogie weight increases.

Further, since the conventional brake device is driven by a pneumatically operated brake cylinder, the outer shape of the brake cylinder for obtaining a high air pressure corresponding to the required brake pressing force (about 50 kgf) becomes extremely large, and the weight is also large. There was a problem of being bulky.

Further, when the brake cylinder operates pneumatically, there is a problem that a time delay occurs before the actual braking is applied to the wheels due to the compressibility of the air, and this braking and cleaning of the wheel tread cannot be performed efficiently.

Conventionally, separate pneumatic or hydraulic piping and a pressure source, which are independent for generating a brake pressing force and a grinding element pressing force, are required.
There was an inconvenience that maintenance and inspection were difficult.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems. By integrating a hydraulic tread cylinder with a brake body, the weight of the bogie is reduced, the bogie structure is simplified, and maintenance and inspection are easy. It is an object of the present invention to provide a brake device which can realize a desired large braking force and efficiently clean a tread surface while adopting a relatively small and light cylinder structure by utilizing hydraulic pressure, while achieving a reduction in size.

Further, according to the present invention, the hydraulic tread cylinder is actuated at first with the input of the brake command, and thereafter the brake is actuated with a slight delay, so that the wheel tread can be sufficiently cleaned immediately before braking. Accordingly, it is an object of the present invention to obtain a brake device that can surely prevent idling and gliding occurring during braking with dust adhered.

It is a further object of the present invention to provide a brake device capable of cleaning only the wheel treads even during traveling without a brake command being applied.

[0012]

In order to achieve the above-mentioned object, a brake device according to the present invention comprises a brake body attached to a bogie, a brake body constituting the brake body, and a brake disk for a wheel. A hydraulic piston that operates so as to separate and contact the lining to brake and release the wheel, and separates the tip grinding element from the tread of the wheel to the hydraulic tread cylinder attached to the brake body, and removes the tread. It is operated so as to perform cleaning, and supplies a hydraulic pressure from a hydraulic supply source to a hydraulic piston and a hydraulic tread cylinder at the time of a braking command.

Further, in the brake device according to the present invention, the operating oil pressure of the hydraulic tread cylinder is set lower than the operating oil pressure of the hydraulic piston.

Further, according to a third aspect of the present invention, there is provided a brake device, wherein a wheel is provided in an oil passage connecting a hydraulic tread cylinder connected to a hydraulic supply source and a hydraulic piston connected to the hydraulic supply source via the hydraulic tread cylinder. A valve that can be closed during operation is connected.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIGS. 1 and 2 are a front view and a side view showing a brake device according to the present invention. Reference numeral 1 denotes a bogie of a railway vehicle, and a U-shaped support frame 2 is attached to the bogie 1 at a location corresponding to the installation of wheels using welding or fastening means such as bolts and nuts.

A pair of support shafts 3 extending in parallel with an axle (not shown) are provided on the upper and lower portions of the support frame 2.
The upper mounting piece 4a of the piston support member 4 is supported by the support shaft 3, and the upper mounting piece 4a is set to be movable in the left-right direction in FIG.
A rubber boot 5 for dust prevention is mounted between the end of the support shaft 3 and the upper mounting piece 4a.

Further, the piston support member 4 is provided with a piston support piece 4b and a lining support piece 4c connected to the lower part of the upper mounting piece 4a so as to straddle the wheel 6, and one of these piston support pieces is provided. 4b is provided with a piston part 7 as a hydraulic piston one by one at the top and bottom.

A lining 9a, which receives hydraulic pressure and is pressed against a brake disc 8a mounted on one side of the wheel 6, is attached to the tip of each of the pistons 7.

On the other hand, the wheel 6
A lining 9b which is in contact with a brake disk 8b mounted on the other side is attached, and each lining 9a, 9b and the piston portion 7 constitute a brake main body A.

Reference numeral 10 denotes a hydraulic hose as an oil passage for supplying hydraulic pressure to each piston portion 7 through a solenoid valve 11 as a valve.
Is connected to a hydraulic pressure source 12 such as a pressure increasing cylinder provided on the vehicle side.

A bracket 13 is mounted on the upper part of the piston support member 4, and a hydraulic tread cylinder 14 is held in the bracket 13 by pressure. ,
A polishing element 15 (see FIG. 1) is pivotally supported by a pin 16.

The grinding element 15 is located at a position facing the tread surface 6a, which is the outer peripheral surface of the wheel 6, and the hydraulic tread cylinder 14
When the rod 14 a advances by the supply of hydraulic pressure to the wheel 6, the circular arc surface of the grinding element 15 can contact the tread surface 6 a of the wheel 6.

Reference numeral 17 denotes a pipe joint which is attached to the end of the hydraulic tread cylinder 14 and supplies hydraulic pressure from the hydraulic supply source 12 to the hydraulic tread cylinder 14. Connected to source 12. Reference numeral 18 denotes a hydraulic hose that connects the pipe joint 17 and the hydraulic supply source 12.

In the brake device having such a configuration, when there is a brake operation by the driver of the vehicle or an automatic deceleration command by the ATC, the hydraulic hose 18 and the pipe joint are supplied from the hydraulic supply source 12 such as a pressure-intensifying cylinder. First, the hydraulic pressure is supplied to the hydraulic tread cylinder 14 via 17.

For this reason, the rod 14a of the hydraulic tread cylinder 14 protrudes toward the center of the wheel, and the arc surface of the grinding element 15 attached thereto is pressed against the tread 6a of the wheel 6,
By this operation, the foreign matter adhered to the tread surface 6a of the wheel 6 can be scraped off by the grinder 15.

On the other hand, the hydraulic pressure from the hydraulic supply source 12 is attached to the piston support piece 4b of the piston support member 4 via the pipe joint 17, the hydraulic hose 10, and the solenoid valve 11 slightly later than the hydraulic tread cylinder 14. Is supplied to the piston portion 7 as a hydraulic piston, and the piston portion 7 is operated, and the lining 9a attached to the tip of the piston portion 7 is moved to the brake disk 8a.
Abut against this.

The lining support piece 4 receives the pressing force of the lining 9a against the brake disk 8a.
The lining 9b attached to the side c also comes into sliding contact with the other brake disc 8b, and the wheels 6 receive the squeezing and braking effect of the pair of linings 9a and 9b, and the braking is quickly and efficiently applied. It will decelerate and stop.

Accordingly, in the brake device having such a configuration, the hydraulic tread cylinder 14 is provided integrally with the brake main body A instead of the bogie side, so that the hydraulic system is compared with the case where the pneumatic cylinder is used. With the downsizing of the configuration, the weight of the brake device body and the ease of maintenance can be improved, and the trolley structure itself can be simplified while improving the responsiveness by using incompressible hydraulic pressure.

Further, by setting the operating pressure of the hydraulic tread cylinder 14 lower than the operating pressure of the brake piston, for example, the operation timing of the hydraulic tread cylinder 14 can be reduced within a time that does not cause a brake delay. Within 5/100 seconds, the braking by the piston portion 7 can be started, whereby the cleaning of the tread surface 6a is performed one moment earlier than the braking, and the wheels 6 due to the contamination of the tread surface 6a are removed.
Can be reliably prevented from slipping.

The timing of the braking delay of the hydraulic tread cylinder 14 by the piston 7 can be arbitrarily determined by selecting the diameter of the cylinder on which the hydraulic pressure acts and the inner diameters of the hydraulic hoses 10 and 18.

Furthermore, the solenoid valve 10 is normally opened so that the hydraulic tread cylinder 14 and the piston portion 7 can operate together when a brake command is issued, but the vehicle is run with the solenoid valve 10 closed. In this case, only the cleaning of the tread surface 6a of the wheel can be automatically performed, and the opening and closing control of the solenoid valve 10 can be arbitrarily performed by the driver's operation.

In the above-described embodiment, the hydraulic tread cylinder 14 is provided to protrude outside the upper part of the brake body A. However, the hydraulic tread cylinder 14 is installed in the support frame 2. Alternatively, the hydraulic tread cylinder 14 may be cast into the brake body A as necessary.

By adopting such a configuration, the hydraulic hose 10 can be omitted, and in addition to the space saving, the weight of the brake device and the reliability of the operation of the hydraulic circuit, and the ease of assembly and maintenance can be reduced. The effect of being able to achieve is obtained.

[0034]

As described above, according to the first aspect of the present invention, the brake body attached to the bogie, and the lining of the brake body constituting the brake body, are separated from and brought into contact with the brake discs of the wheels to brake the wheels. And a hydraulic piston that operates so as to release the brake.The hydraulic tread cylinder attached to the brake body is operated to separate the tip grinding element from the tread of the wheel to the tread and clean the tread. Since the hydraulic pressure is supplied from the hydraulic supply source to the hydraulic piston and the hydraulic tread cylinder, the tread cylinder is integrated with the brake body to reduce the weight of the bogie, simplify the bogie structure, and facilitate maintenance and inspection. And a relatively small and lightweight cylinder structure using hydraulic pressure, while maintaining the desired braking force and cleaning of treads. Effect that efficiently be carried.

According to the second aspect of the present invention, since the operating oil pressure of the hydraulic tread cylinder is set lower than the operating oil pressure of the hydraulic piston, the tread cylinder is actuated at first with the input of the brake command, and thereafter, By activating the brake with a slight delay, the tread surface of the wheel can be sufficiently cleaned immediately before the braking is started, whereby the wheel can be prevented from slipping or sliding due to the braking with dust adhered. Is obtained.

Further, according to the third aspect of the present invention, a wheel drive is provided in the oil passage connecting the hydraulic tread cylinder connected to the hydraulic supply source and the hydraulic piston connected to the hydraulic supply source via the hydraulic tread cylinder. Since the valve that can be closed is connected inside the vehicle, it is possible to obtain an effect that it is possible to clean only the tread surface of the wheel even during traveling without applying a brake command.

[Brief description of the drawings]

FIG. 1 is a front view of a main part showing a brake device according to an embodiment of the present invention.

FIG. 2 is a side view of the brake device shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bogie 6 Wheel 6a Tread surface 7 Piston part as a hydraulic piston 8a, 8b Brake disk 9a, 9b Lining 10 Hydraulic hose constituting an oil passage 11 Solenoid valve as a valve 12 Hydraulic supply source 14 Hydraulic tread cylinder 15 Grinding element A Brake body

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takayuki Shimomura 2-8-8 Hikaricho, Kokubunji-shi, Tokyo Inside the Railway Technical Research Institute (72) Masanori Sawada 5-1-1 Shimaya Konohana-ku, Osaka-shi, Osaka No.109 Sumitomo Metal Industries Co., Ltd.Kansai Works Steelworks Office (72) Inventor Susumu Susumu Kubota 5-1-1, Shimaya, Konohana-ku, Osaka-shi, Osaka Sumitomo Design and Engineering Co., Ltd. (72) Inventor Yukio Abe Tokyo World Trade Center Building Kayaba Industry Co., Ltd. 2-4-1 Hamamatsucho, Minato-ku, Tokyo

Claims (3)

[Claims] 1. A brake body attached to a bogie, a hydraulic piston which constitutes the brake body, operates to move a lining to and away from a brake disk of a wheel to brake and release the wheel, and a brake body Hydraulic tread cylinder which is attached to the tread of the wheel and which works to clean the tread by moving the abrasive attached to the tip to the tread of the wheel, and hydraulic supply to supply hydraulic pressure to the hydraulic piston and hydraulic tread cylinder when braking command And a brake device. 2. The brake device according to claim 1, wherein the operating oil pressure of the hydraulic tread cylinder is set lower than the operating oil pressure of the hydraulic piston. 3. A valve operable to close during wheel driving is connected to an oil passage connecting a hydraulic tread cylinder connected to a hydraulic supply source and a hydraulic piston connected to the hydraulic supply source via the hydraulic tread cylinder. The brake device according to claim 1, wherein: