JP2000179594A - Caliper brake - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate inspection work of a cylinder part and prevent damage of a supply oil path, by drilling the supply oil path connecting a supply oil port opened to the carriage frame side in the cylinder part in a cylinder block receiving a piston, in a caliper arm and the cylinder block in an assembly state. SOLUTION: A piston of a cylinder block 31 mounted in a caliper arm 22 presses a pair of brake shoes 21, 21 to a rotor. In this operation, the brake shoes 21, 21 are placed in a condition interposing the rotor there between, so as to generate brake force by slide friction between each brake shoe 21 and the rotor. The cylinder block 31 applied as an ordinary inspection part of a thus constituted caliper brake 20 to have an auto-adjuster 92 and a cylinder part 97 is constituted by a separate unit from the caliper arm 22, and so on, so that work of inspection can be facilitate. Since a supply oil path from a side of a carriage frame 27 to the cylinder part 97 is prevented from being exposed in the external periphery or the like, damage of the supply oil path due to flying gravel or the like can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a caliper brake for railway vehicles, and more particularly to an improvement for facilitating inspection work on a cylinder portion and the like.

[0002]

2. Description of the Related Art FIGS. 4 and 5 show examples of the arrangement of a caliper brake on a conventional bogie for a railway vehicle. FIG. 6 is an enlarged plan view of the caliper brake shown in FIG.
Is an enlarged side view thereof. The bogie 200 has a configuration in which wheel shafts 201 are supported in front and rear of a bogie frame 11, and wheels 2 are provided at both ends of each wheel shaft 201.

A caliper brake 1 is mounted on both sides of a wheel 2 and rotates integrally with the wheel 2 (disc).
A pair of brake shoes 4, 4 opposed to each other so as to sandwich 3;
It is composed of a pair of caliper arms 6 and 7 to which each brake shoe 4 is attached at the tip, and caliper connecting means 13 for connecting the caliper arms 6 and 7 to a bogie frame 11 of a railway vehicle.

Each brake shoe 4 has a flat plate-shaped pressure plate 42 parallel to the sliding surface of the rotor 3, a lining 44 attached to one surface of the pressure plate 42 via a back plate 43, and a pressure plate 42. 42 and an anchor plate 46 fixedly mounted on the other surface.

In the above-described brake shoe 4, the pressure plate 42 is riveted to the anchor plate 46,
The back plate 43 is riveted to the pressure plate 42, and the lining 44 is adhered to the back plate 43, and is integrated as a whole. The anchor plate 46 is a generally rectangular plate that is elongated in the longitudinal direction of the pressure plate 42 as a whole, and anchor pins 79 described below are provided at both ends in the longitudinal direction so as to be engageable.

[0006] The pair of caliper arms 6 and 7 are integrally structured products whose base ends are connected in a bridging manner by a connecting portion 8. The caliper arms 6 and 7 are connected to the bogie frame 11 via caliper connecting means 13. The caliper connecting means 13 supports a support 16 fastened and fixed to the bogie frame 11 and a support 16 And two guide pins 17 connected to the first and second guide pins. Guide pin 17
With the axis set in the rotor axis direction (that is, the horizontal direction), the pair of caliper arms 6 and 7 are floatingly supported by being inserted in the connecting portion 8 so as to be movable in the rotor axis direction.

[0007] At the tip of the caliper arm 6, a brake shoe 4 is provided.
A guide plate 71 for holding the anchor plate 46 so as to be slidable only in the sliding direction (the direction of the arrow (a) in FIG. 7) between the brake shoe 4 and the rotor 3, and restricts the displacement of the anchor plate 46 in the sliding direction. And an anchor block 73, 74 attached to the tip of each caliper arm. Further, a guide plate 71 is supported on the distal end of the caliper arm 6 so as to be able to advance and retreat in the rotor axis direction, and an auto adjuster 72 for adjusting a gap between the brake shoe 4 and the rotor 3 via the guide plate 71. And a cylinder 77 that houses a piston that presses the brake shoe 4 against the rotor 3. The accommodating portion of the auto adjuster 72 and the cylinder portion 77 are formed integrally with the caliper arm 6.

At both ends in the longitudinal direction of the guide plate 71, anchor pins 79 whose axes are oriented in the rotor axial direction are attached. The anchor pin 79 is slidably held in the rotor axial direction by anchor blocks 73 and 74 fixed to the tip of the caliper arm 6 by two screws 80. The head of the anchor pin 79 attached to the guide plate 71 stops the above-mentioned movement in the direction of the arrow (a) by fitting into the fitting portion of the anchor plate 46. The fitting portion formed on the anchor plate 46 is usually a semicircular cutout circumscribing the head of the anchor pin 79 or an insertion hole into which the head fits.

[0009] The cylinder portion 77 is provided on the anchor plate 46.
Are provided at a predetermined distance from each other along the longitudinal direction. As shown in FIGS. 4 and 5, the hydraulic pressure supply to each cylinder portion 77 is usually performed by a hydraulic oil pipe 204 attached to the outer periphery of the caliper arm 6 from a pneumatic oil converter 203 installed on the bogie frame 11 side. It is performed by And each cylinder part 77
The piston supported at the end is driven by the hydraulic pressure supplied to the cylinder portion 77 toward the rotor 3 with the piston head at the tip contacting the guide plate 71. The pressing force of the piston driven by the hydraulic pressure is applied to the anchor plate 46 via the guide plate 71, and pushes the guide plate 71 and the anchor plate 46 integrally to the rotor 3 side.

In the caliper brake 1 having the above configuration, when the brake shoe 4 located on the caliper arm 6 is pressed against the rotor 3 by the piston housed in the cylinder portion 77, the pair of caliper arms 6, 6 7 slides on the guide pin 17 in the direction opposite to the displacement of the brake shoe 4 biased by the piston. The sliding of the caliper arms 6 and 7 causes the pair of brake shoes 4 and 4 to sandwich the rotors 3 and 3, and a braking force is generated by sliding friction between the brake shoes 4 and the rotor 3.

[0011]

By the way, in order to maintain the braking performance by replacing the lining 44 and to confirm the safety, the caliper brake 1 needs to be inspected around the cylinder portion 77, the auto adjuster 72, and the like. But,
In the case of the caliper brake 1 described above, since the cylinder portion 77 and the like have a structure integrated with the caliper arm 6, the entire caliper arms 6, 7 must be removed from the bogie frame 11 at the time of inspection. There is a problem that parts to be removed at the time of work increase in size and weight, and a great deal of labor is required.

In the conventional caliper brake 1, the caliper arms 6 and 7 are connected to the bogie frame 11 by guide pins 17 inserted in the rotor axial direction. It is necessary to remove the guide pin 17 in order to remove it. But,
As shown by the arrow (b) in FIG. 4, the space around the caliper arms 6 and 7 has a small free space in the rotor axial direction due to the protrusions of the bogie frame 11 and the like. It could not be done, making inspection difficult.

Further, in the above-described caliper brake 1, a hydraulic oil pipe 2 for supplying a hydraulic pressure to the cylinder portion 77 is provided.
04 and the hose are exposed on the outer peripheral portion of the caliper arm 6, so that they may be damaged by a stepping stone or the like during running of the vehicle. There is also a problem that it takes time and effort because the connection must be opened. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a caliper brake for a railway vehicle capable of easily inspecting a cylinder portion and preventing damage to an oil supply path due to a stepping stone or the like during traveling. The purpose is to:

[0014]

A caliper brake according to the present invention for achieving the above object comprises a pair of brake shoes opposed to each other so as to sandwich a rotor that rotates integrally with wheels.
A caliper arm to which the brake shoe is attached at the tip;
A caliper brake for a railway vehicle comprising: a caliper connecting means for connecting the caliper arm to a bogie frame;
A guide plate that is provided at the tip of the caliper arm so as to be detachable with mounting bolts that are inserted vertically and that the cylinder block has at least the brake shoe attached thereto and supported so as to be able to advance and retreat in the rotor axial direction. And a piston that presses the brake shoe against the rotor by hydraulic pressure, and the caliper arm and the cylinder block are, when in an assembled state, on a bogie frame side in a cylinder portion in the cylinder block that houses the piston. A fuel supply passage for communicating the opened fuel supply port is provided.

According to the above construction, since the cylinder block having the auto-adjuster and the cylinder portion, which are to be inspected in the caliper brake, is formed separately from the caliper arm, the cylinder block is removed from the bogie frame at the time of inspection or the like. The parts only need to be small and light cylinder blocks compared to the conventional caliper arms. Moreover, the mounting bolts that connect the cylinder block to the caliper arm are inserted not in the rotor shaft direction of the bogie frame with a narrow working space but in the vertical direction perpendicular to the rotor shaft direction where there is relatively room for space. Also, the work of pulling out the mounting bolt for removing the cylinder block can be easily performed.

Further, since the oil supply passage from the bogie frame side to the cylinder portion is formed in the caliper arm and the cylinder block itself, the oil supply passage can be connected / opened only by attaching / detaching the cylinder block. . Therefore, assembling and inspection work of the cylinder portion and the like can be easily performed. Further, since the oil supply path from the bogie frame side to the cylinder portion is not exposed to the outer periphery of the caliper arm or the like, it is possible to prevent damage to the oil supply path due to flying stones or the like during traveling.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a caliper brake according to the present invention will be described below in detail with reference to the drawings. 1 to 3 show an embodiment of a caliper brake for a railway vehicle according to the present invention. FIG. 1 is a plan view showing a main part of the caliper brake, and FIG. 2 is a caliper brake shown in FIG. FIG. 3 is a cross-sectional view taken along line AA of FIG.

A caliper brake 20 is mounted on both sides of the wheel 2 and has a pair of brake shoes 21 and 21 opposed to each other so as to sandwich a disk-shaped rotor (disk) 3 which rotates integrally with the wheel 2. It comprises a pair of caliper arms 22 and 23 to which the wheel 21 is attached, and caliper connecting means 29 for connecting the caliper arms 22 and 23 to the bogie frame 27 of the railway vehicle.

As shown in FIG. 3, each brake shoe 21 has a flat plate parallel to the sliding surface of the rotor 3 and a pressure plate 52 elongated in the sliding direction, and a back plate on one surface of the pressure plate 52. It comprises a lining 54 attached via a plate 53 and an anchor plate 56 fixedly mounted on the other surface of the pressure plate 52. In the brake shoe 21, the pressure plate 52 is riveted to the anchor plate 56, the back plate 53 is riveted to the pressure plate 52,
The lining 54 is adhered to the back plate 53 and integrated as a whole.

The lining 54 is a thick plate-shaped product whose components are adjusted so as to be pressed against the surface (sliding surface) of the rotor 3 to generate a predetermined frictional force. The anchor plate 56 is a substantially rectangular plate material that is elongated along the longitudinal direction of the pressure plate 52 as a whole, and a contact portion 56 that contacts an anchor block described later is provided at both ends in the longitudinal direction.
a is formed.

In the case of this embodiment, the outer caliper arm 22 and the inner caliper arm 23
Are independent parts and are individually attached to the bogie frame 27. At the base end of each caliper arm 22, 23,
Dolly connecting parts 29a, 2 constituting the caliper connecting means 29
9b are integrally formed. In addition, each caliper arm 2
A cylinder block 31, which is a separate component, is detachably attached to the distal ends of the cylinder blocks 2 and 23 with mounting bolts 33. The cylinder block 31 is a component that becomes a mounting portion of the brake shoe 21.

The bogie connecting portions 29a and 29b of the caliper arms 22 and 23 have a contact surface 29c which is in close contact with the side surface of the bogie frame 27, and the contact surface 29c is in close contact with the side surface of the bogie frame 27. In the state, as shown, four bolts 34
Is fixed to the bogie frame 27. In addition, the bogie connecting part 29
Positioning blocks 27a and 27b that abut against the outer peripheral surfaces of the bogie connecting portions 29a and 29b and position the bogie connecting portions 29a and 29b project from three sides of the bogie frame 27 to which the a and 29b are attached. Has been established.

At the tip end of each of the caliper arms 22 and 23, a fitting groove 25 for connecting to the cylinder block 31 is provided. The cylinder block 31 has a protruding fitting portion 31a that fits into the fitting groove 25. When the fitting protrusion 31a is fitted into the fitting groove 25, these fitting portions are moved up and down. It is fixed to each of the caliper arms 22 and 23 by fastening with the mounting bolts 33 inserted from the direction.

FIGS. 1 to 3 show the cylinder block 31.
As shown in FIG. 2, a guide plate 91 for holding the anchor plate 56 of the brake shoe 21 slidably in a direction indicated by an arrow (c) in FIG. 2 and in a direction indicated by an arrow (d) in FIG. The cylinder block 31 is supported so as to be able to adjust the clearance between the brake shoe 21 and the rotor 3 via the guide plate 91 and the displacement of the anchor plate 56 in the sliding direction. Are located at both ends (upper and lower ends) in the sliding direction of the anchor block 93 which receives braking torque from the brake shoe 21 during braking.
94 and a piston 96 for pressing the brake shoe 21 against the rotor 3
And a cylinder part 97 that accommodates the same.

As shown in FIG. 2, the anchor blocks 93 and 94 and the cylinder block 31 are fitted in the rotor shaft direction by fitting engagement grooves 100 and engagement protrusions 101 extending along the rotor axis direction. Only relative movement is possible. The anchor block 93, 94 and the cylinder block 31 are moved relative to each other in the rotor axis direction by a single retaining screw 103 inserted into the anchor block 93, 94 and the cylinder block 31 at right angles to the rotor axis direction. Movement is regulated. Anchor block 93,
As shown in FIGS. 3 and 4, sliding grooves 93a and 94a are provided in the 94 so that the contact portions 56a on both ends of the anchor plate 56 are in slidable contact with each other in the axial direction of the rotor. Is set as a torque receiving surface T that receives a braking torque from the brake shoe 21. Anchor plate 5
6, the contact portion 56a is in contact with the torque receiving surface T of each of the sliding grooves 93a and 94a.
(D) The movement in the direction is stopped.

The cylinder part 97 includes the anchor plate 56
Are provided at a predetermined distance from each other along the longitudinal direction. The piston 9 supported by each cylinder 97
6 has a cylinder part 97 whose tip abuts the guide plate 91.
Is driven toward the rotor 3 by the hydraulic pressure supplied to the rotor 3. That is, the pressing force of the piston 96 is applied to the anchor plate 56 via the guide plate 91, and pushes the guide plate 91 and the anchor plate 56 integrally to the rotor 3 side.

In this embodiment, the cylinder 97
The hydraulic pressure is supplied to the oil supply passage 10 formed in the bogie frame 27.
5 and 106 via oil supply passages 107 and 108 formed in the caliper arms 22 and 23 and the cylinder block 31. A lubrication passage 107 formed in each of the caliper arms 22 and 23 and a lubrication passage 108 formed in the cylinder block 31 are opened at a contact surface with a mating member connected to each other. The connection of the oil supply passages to each other is established by the connection of the oil supply passages to each other. For example, when the caliper arms 22 and 23 are fixed to the bogie frame 27, the lubrication path 10
5 and 106 and the oil supply passage 107 formed in the caliper arms 22 and 23 are in communication with each other.
Are connected, the oil supply passages 1 of the caliper arms 22 and 23 are connected.
07 and the oil supply passage 108 in the cylinder block 31 are in communication with each other.

In the caliper brake 20 having the above structure, the pistons 96 of the cylinder block 31 attached to the caliper arms 22 and 23 press the pair of brake shoes 21 and 21 against the rotor 3 so that the brake shoes 21 and 21 are formed. Each of the brake shoes 21 and the rotor 3
A braking force is generated by the sliding friction between.

The caliper brake 2 constructed as described above
0, the auto adjuster 9 which is a normal inspection point
The cylinder block 31 having the cylinder part 97
Since it is configured separately from the caliper arms 22 and 23, only the cylinder block 31 that is smaller and lighter than the caliper arms 22 and 23 needs to be removed from the bogie frame 27 during inspection or the like. Moreover, the caliper arm 22,
Mounting bolt 33 connecting cylinder block 31 to 23
The mounting bolt 33 for removing the cylinder block 31 has a structure in which the empty space for work is inserted not in the rotor axis direction of the bogie frame 27 but in the vertical direction orthogonal to the rotor axis direction where there is a relatively large space. Can be easily carried out. Further, oil supply passages 105, 106, from the bogie frame 27 side to the cylinder portion 97,
Since 107 and 108 are perforated in the caliper arms 22 and 23 and the cylinder block 31 itself, the lubrication path can be connected and opened only by the work of mounting or removing the cylinder block 31. Accordingly, the work of assembling and inspecting the cylinder portion 97 and the like can be easily performed. Also,
Since the oil supply passage from the bogie frame 27 side to the cylinder portion 97 is not exposed to the outer periphery of the caliper arms 22 and 23, it is possible to prevent the oil supply passage from being damaged due to flying stones or the like during traveling.

Further, in the above-described embodiment, since the left and right caliper arms 22 and 23 are separate from each other, each of the caliper arms 2 and 23 is separately mounted on the bogie frame 27.
Attachment work to the bogie frame 27 of 2 and 23 also becomes easy.
Further, since the caliper arms 22 and 23 are separate from each other and each component is downsized, the caliper arms 22 and 23 are compared with a conventional case where a pair of caliper arms are integrally formed. The machining operation when drilling the oil supply path 107 is facilitated, and the machining cost can be reduced.

The specific structure of each component constituting the caliper brake of the present invention is not limited to the above embodiment, and it goes without saying that the design can be changed as appropriate without departing from the spirit of the present invention. No.

[0032]

According to the caliper brake of the present invention, the cylinder block having the auto-adjuster and the cylinder portion which is required to be inspected in the normal inspection work is formed separately from the caliper arm. The only component to be removed is a small and light cylinder block compared to the conventional caliper arm. Moreover, the mounting bolts that connect the cylinder block to the caliper arm are inserted not in the rotor shaft direction of the bogie frame with a narrow working space but in the vertical direction perpendicular to the rotor shaft direction where there is relatively room for space. Also, the work of pulling out the mounting bolts for removing the cylinder block can be easily carried out, and the work can be improved. Further, since the oil supply passage from the bogie frame side to the cylinder portion is bored in the caliper arm and the cylinder body itself, the connection / opening of the oil supply passage can be carried out only by attaching / detaching the cylinder block. Therefore, assembling and inspection work of the cylinder portion and the like can be easily performed. Further, since the oil supply passage from the bogie frame side to the cylinder portion is not exposed to the outer periphery of the caliper arm or the like, breakage of the oil supply passage due to stepping stones or the like during traveling can be prevented.

[Brief description of the drawings]

FIG. 1 is a plan view showing a main part of a caliper brake according to the present invention.

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

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a plan view of a bogie of a railway vehicle equipped with a caliper brake.

FIG. 5 is a side view of the bogie shown in FIG. 4;

FIG. 6 is a plan view of a main part of a conventional caliper brake for a railway vehicle.

FIG. 7 is a side view of the caliper brake shown in FIG.

[Explanation of symbols]

 2 Wheel 3 Rotor 20 Caliper Brake 21 Bracelet 22, 23 Caliper Arm 27 Bogie Frame 29 Caliper Connecting Means 31 Cylinder Block 33, 34 Mounting Bolt 52 Pressure Plate 53 Back Plate 54 Lining 56 Anchor Plate 56a Contact Section 91 Guide Plate 92 Auto Adjuster 93, 94 Anchor block 93a, 94a Sliding groove T Torque receiving surface 96 Piston 97 Cylinder part 100 Engaging groove 101 Engaging projection 103 Screw for retaining 105, 106 Oil supply path 107 Oil supply path 108 Oil supply path

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3J058 AA48 AA53 AA66 AA73 AA77 AA84 AA87 BA44 BA70 CC03 CC23 CC32 CC96 CD03 CD14 DA04 DA23 FA21

Claims (1)

[Claims] A pair of caliper arms disposed opposite to each other so as to sandwich a rotor that rotates integrally with a wheel; a pair of caliper arms to which the caliper arms are attached at tip ends; and a caliper connection for coupling the caliper arm to a bogie frame. Means, a cylinder block is provided at the tip of the caliper arm so as to be detachable with a mounting bolt inserted vertically, and at least the brake shoe is attached to the cylinder block. A guide plate that supports the rotor so as to be able to advance and retreat in the axial direction of the rotor, and a piston that presses the brake shoe against the rotor by hydraulic pressure, and the caliper arm and the cylinder block accommodate the piston when assembled. The lubrication port opened to the bogie frame side communicates with the cylinder part in the cylinder block The caliper brake is characterized by having an oil supply passage.