JP3698524B2 - Caliper brake device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a caliper brake device used in a railway vehicle.
[0002]
[Prior art]
In a railway vehicle, for example, a caliper brake device as shown in FIG. 6 is provided for each wheel to brake the vehicle.
[0003]
As shown, the brake caliper 1 of the caliper brake device, the bracket 1A, in 1B, the mounting portion 8 which is fixed to the vehicle body side, is attach through the pair of support pins 9. The support pin 9 is disposed in parallel with the brake disc 3 of the caliper brake device, and the brake caliper 1 slides along the support pin 9 in a direction perpendicular to the brake disc 3 (left-right direction in the figure). It is possible.
[0004]
On the other hand, the pair of arms 2A, 2B of the brake caliper 1 have the brake supporters 4A, 4B attached to the respective ends of the brake disc 3 rotating integrally with the respective wheels. The control members 5A and 5B are supported by the control members 4A and 4B, respectively. These control elements 5A and 5B each have a flat friction surface, and these friction surfaces are opposed to both side surfaces of the brake disk 3 substantially in parallel.
[0005]
In this case, one of the restrictors 5A is supported on the back plate (anchor plate) 6A by the moving means 10 that is movable to the brake disc 3 side by expansion and contraction of a plurality of pistons (not shown) built in the restrictor support 4A. The As a result, when the plurality of pistons are extended by receiving the supply of hydraulic pressure through the hydraulic pressure introduction port 7 provided in the arm 2A, the control member 5A extending together with the moving means 10 is pressed against the side surface of the brake disk 3. In this case, since the brake caliper 1 can move along the support pin 9, the brake members 5 </ b> A and 5 </ b> B eventually sandwich the brake disk 3 from both sides, and the brake disk 3 is caused by the frictional force generated at this time. Braked.
[0006]
Further, the other (anti-piston side) brake element 5B is supported by inserting a back plate 6B into a dovetail groove 11 formed by longitudinally cutting the brake wheel support part 4B. In this case, the open both ends of the dovetail groove 11 are closed by anchor blocks (branch bearing receivers) 12 and 13 shown in FIG. 7, and the back plate 6B in the dovetail groove 11 (not shown in FIG. 7). Is held between the anchor blocks 12 and 13.
[0007]
[Problems to be solved by the invention]
However, in such a conventional support structure of the control member 5B in the anti-piston side control device 4B, when the control device 5B is attached or detached, a plurality of bolts 14 for fixing the anchor blocks 12 and 13 are fitted or removed. It must be troublesome. Further, when manufacturing the control member support portion 5B, it is necessary to drill the bolts 14, which is troublesome.
[0008]
In addition, when the bolt 14 is removed when the control 5B is attached / detached, the anchor block 13 on the side of the anchor block 13 ( on the lower side of the arrow indicating the upward direction in FIG. 7 ) does not fall, A fishing fitting (anchor spring) 15 and a plurality of pins 16 for fixing the fishing fitting 15 to the anchor block 13 are required, which causes an increase in the number of parts.
[0009]
The present invention has been made paying attention to such a problem, and in a caliper brake device for a railway vehicle, it is possible to easily perform a replacement operation of the control device and to reduce the number of parts in the support unit of the control device. The purpose is to provide things.
[0010]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a brake disc that rotates integrally with each wheel of the vehicle, a brake caliper that is attached to the vehicle side so as to be movable in the rotational axis direction of the brake disc, and the brake disc that is sandwiched from both sides. wherein respectively supported Ru system Waco to the pair of brake shoe support portion provided on the arm tip of the brake caliper, the brake shoe to be supported by the brake shoe support portion incorporated in one of the pair of brake shoe support portion brake There is provided a moving means for moving to the disc side, and an end extending from one end of the restrictor support portion to the other end and open at both ends on a side surface of the pair of restrictor support portions facing the other brake disc. In the caliper brake device in which a groove is formed and the back plate of the restrictor is accommodated in the dovetail so as to support the restrictor, A recess that crosses the dovetail groove is formed near at least one end of the other of the pair of restrictor support portions, and a spacer that is accommodated in the recess is provided, and the other recess of the pair of restrictor support portions A pin hole that crosses the vicinity of the end of the recess is opened at the end on the side, and communicates coaxially with the pin hole that opens at the end of the brake support when the spacer is accommodated in the recess. A through hole having substantially the same diameter as the pin hole is formed through the spacer, and is accommodated in the inner diameter of the pin hole and the through hole with substantially no gap, and is longer than the length of the through hole and the pin hole A locking pin that is shorter than a length on the back side of the recess, a biasing means that biases the locking pin so that the locking pin is normally disposed at a position across the through hole, and the locking pin To the back side of the recess of the pin hole While than Mel the locking pin and a small diameter push pin, in a normal state to hold the end portion of the back plate of the brake shoe housed in the dovetail groove by a spacer housed in the recess, the brake shoe of tucked into the inner side than the concave portion of more the pin hole of the locking pin to the push pin during detachment, by supporting the locking pin on the side of the spacer is slightly moved in this state, the The movement of the spacer in the direction along the concave portion is enabled, and the holding of the end portion of the back plate is released.
[0011]
In the second invention, the urging means for the locking pin is a spring stretched between an end of the locking pin and a bottom of the pin hole.
[0012]
According to a third aspect of the present invention, the urging means for urging the push pin to be pulled out of the pin hole under normal conditions, and the push pin pulled out by the urging means are completely detached from the pin hole. And a supporting means for supporting so as not to exist.
[0013]
According to a fourth aspect of the present invention, the support means for the push-in pin includes a screw member that is screwed into the open end of the pin hole, and a large-diameter portion that is formed in a flange shape at the end of the push-in pin and contacts the screw member. Become.
[0014]
According to a fifth aspect of the present invention, the urging means of the push pin is disposed on an outer periphery of the push pin, and is a spring stretched between the opening end portion of the pin hole and the tip end portion of the push pin.
[0015]
A sixth invention is the spacer, the addition to the first of the through-hole communicating with the pin hole, near the opposite side of the spacer ends this first through-hole when it is accommodated in the recess A second through hole penetrating in parallel with the first through hole was formed.
[ 0016 ]
Operation and effect of the invention
In the first and second aspects of the invention, in the normal state in which the control member is supported by the other of the pair of control members (the control member supporting member on the side opposite to the moving means), the end of the control member is in the recess. By abutting against the accommodated spacer, the movement of the restrictor along the dovetail groove is restricted, and the restrictor is supported by the restrictor support portion.
[ 0017 ]
In this case, the locking pin urged by the urging means (spring) is arranged so as to straddle the pin hole of the brake supporter and the through hole of the spacer, and the movement along the recess of the spacer is prohibited. Ensure that the end of the restrictor is held by the spacer.
[0018]
On the other hand, when the control device is attached to or detached from the control device, the lock pin is pushed deeper than the concave portion of the pin hole with the push-in pin , and the position of the spacer is slightly shifted. Since the spacer cannot be extended to the side of the through hole due to being caught in other locations, and the spacer can move freely along the recess, if the spacer is moved to a position where it does not contact the end, the attachment / detachment of the control Work can be done.
[0019]
As described above, the mounting and dismounting operation of the control device can be performed easily and efficiently, and the parts for supporting the end of the control device are only spacers and locking pins, and the number of parts can be reduced. The processing for the wheel support portion may be only the recess and the pin hole, and the number of processing steps may be reduced, so that the cost can be reduced.
[0020]
Third to the fifth aspect of the invention, in a normal state where the brake shoe is supported on the brake shoe support, press and included pins, support means in the direction drawn from the pin hole (large screw members and push pin ends The locking pin that is urged to a position regulated by the diameter portion) and is not pushed in by the push-in pin is arranged across the through hole from the through hole, and the spacer is fixed in the recess.
[0021]
On the other hand, when the control member is attached / detached, if the pushing pin is pushed into the pin hole against the biasing means (spring), the locking pin is pushed deeper than the concave portion of the pin hole. Since the push pin is housed in this state, if the spacer is slightly shifted in this state, the spacer moves to the push pin side having a smaller diameter than the lock pin, and the lock pin is a through hole of the spacer. As a result, the spacer cannot be extended to the side of the through hole by being caught in other places, so that the spacer can be moved along the recess.
[0022]
As described above, the push-in pin and the biasing means and the supporting means can be configured with a minimum number of parts and at a low cost, and the attaching and detaching work of the control device is facilitated.
[0023]
In the sixth invention, when the spacer is displaced along the recess when attaching or detaching the brake, the locking pin urged by the urging means is inserted into the second penetration just before the spacer is detached from the recess. Since the spacer moves into the hole and prohibits further movement of the spacer, the spacer is not completely detached from the support for the restrictor, and the attachment / detachment work of the restrictor can be made efficient. Further, when the spacer is accommodated in the recess again, the operation is easy because the locking pin has only to be pushed in by the pushing means.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0025]
1 to 5 show one end of the piston-side restrictor support portion 4B of the brake caliper 1 in the present embodiment. Compared with the conventional caliper brake device shown in FIGS. 6 and 7, the present invention is different in the support structure of the brake 5B at one end of the brake support 4B, and the other parts are common. Hereinafter, a description will be given focusing on the support structure of the control member 5B at one end of the control member support 4B. In addition, the direction shown by the arrow in the figure indicates the vertically upward direction when actually attached to the vehicle.
[0026]
As shown in the drawing, dovetail grooves 11 are formed in the side surface on the brake disc 3 side of the restrictor support portion 4B so as to be open at both ends of the restrictor support portion 4B. And in the edge part (only one end is shown in the figure) of this restrictor support part 4B, the recessed part 21 is formed so that this dovetail groove 11 may be traversed in the orthogonal direction. A spacer 22 having substantially the same length as that of the recess 21 is fitted into the recess 21, and the back plate end portion of the control ring 5 </ b> B inserted into the dovetail groove 11 is in contact with and supported by the side surface of the spacer 22. It is like that.
[0027]
Further, a pin hole 23 is opened at one end of the restrictor support 4B so as to be parallel to the dovetail groove 11 and cross the recess 21.
[0028]
On the other hand, in the vicinity of one end of the spacer 22, a through hole 24 having the same diameter as that of the pin hole 23 is connected to the spacer 22 so that the pin hole 23 communicates with the pin hole 23 when it is received in the recess 21. It is formed to penetrate in a right angle direction. The pin holes 23 and the through holes 24 are prevented from penetrating the locking pins 31 of the locking device 30, and the spacers 22 are prevented from falling off along the recesses 21.
[0029]
Further, a through hole 25 having the same diameter as the through hole 24 is formed in the vicinity of the other end of the spacer 22 so as to penetrate the spacer 22 in a perpendicular direction. When the control member 5B is attached to or detached from the control member 4B, the locking pin 31 of the locking device 30 passes through the through hole 25, and the spacer 22 may be detached from the control member 4B. Is prevented.
[0030]
FIG. 5 shows the locking device 30 in detail.
[0031]
As shown in the drawing, the locking device 30 includes a locking pin 31 having a slightly smaller diameter than the pin hole 23 and the through hole 24, and the locking pin 31 is separated from the locking pin 31. The locking pin 31 and the pushing pin 32 are accommodated in the pin hole 23 and the through hole 24 in this order.
[0032]
A spring 33 is provided between the base end of the locking pin 31 and the bottom 23 </ b> A of the pin hole 23. The spring seat 33 </ b> A of the spring 33 is disposed at the bottom 23 </ b> A of the pin hole 23, and the spring 33 urges the locking pin 31 in a direction to pull away from the bottom 23 </ b> A of the pin hole 23. Thereby, the front end of the locking pin 31 comes into contact with the large-diameter portion 32A of the proximal end of the push pin 32, and is normally arranged near the through hole 24. The length of the locking pin 31 is longer than the width of the recess 21 (through hole 24), and when pushed into the bottom 23A side of the pin hole 23, the bottom 23A than the recess 21 (through hole 24). Keep the length to the side.
[0033]
On the other hand, the push-in pin 32 is accommodated in the pin hole 23 on the large diameter portion 32 </ b> A that comes into contact with the locking pin 31, while the tip side protrudes outward from the pin hole 23 . In this case, the pin hole 23 ends are cut screw groove 26, the screw (screw member) 34 which is fixed to the pin hole 23 ends screwed into the screw groove 26, pushing pin 32 proximal The large diameter portion 32 </ b> A is caught and the push pin 32 is prevented from being detached from the pin hole 23 .
[0034]
A spring 35 is disposed on the outer periphery of the protruding portion of the push pin 32 from the pin hole 23. The spring seat 35A to which one end of the spring 35 is fixed is at the tip of the push pin 32, and the other end is a screw. 34, respectively. As a result, the push-in pin 32 is normally urged by the spring 35 in the direction away from the pin hole 23, and is arranged at a position where the large-diameter portion 32A at the proximal end abuts the end of the screw 34.
[0035]
Next, the operation will be described.
[0036]
In the caliper brake device according to the present invention, in a normal state where the restrictor 5B is supported by the restrictor support 4B, the spacer 22 moves in the direction along the recess 21 by the locking pin 31 fitted in the through hole 24. As well as being restricted, as shown well in FIG. 2, it is suppressed by the restrictor 5B from coming out of the recess 21 to the side. Therefore, since the back plate 6B (see FIG. 4) of the restrictor 5B accommodated in the dovetail groove 11 is restricted from moving in the direction along the dovetail groove 11 by the spacer 22 with which the end abuts, It is stably supported by the wheel support 4B.
[0037]
On the other hand, when removing the restrictor 5B from the restrictor support 4B, the pushing pin 32 of the locking device 30 is pushed into the pin hole 23 against the springs 33 and 35, and the locking pin 31 is pushed into the recess 21 of the pin hole 23. It is pushed from the (through hole 24) to the bottom 23A side. Then, the pushing pin 32 having a diameter smaller than that of the locking pin 31 enters the through hole 24 of the spacer 22, and the spacer 22 can move by the amount of play generated at this time. 22 is caught on the side surface and cannot come out to the through hole 24 side. In this state, when the pushing of the push pin 32 is stopped and the push pin 32 is returned to the initial position where the push pin 32 is pulled out of the through hole 24 by the biasing force of the spring 35, the spacer 22 is free to move in the direction along the recess 21. .
[0038]
Therefore, the spacer 22 is slid and moved in the recess 21 so that the side on which the through hole 24 is formed first comes out of the recess 21. As the spacer 22 is moved in this manner, the through hole 25 of the spacer 22 eventually moves to a position where it communicates with the pin hole 23. Then, the locking pin 31 housed inside the recess 21 of the pin hole 23 enters the through hole 25 by the urging force of the spring 33, and further movement of the spacer 22 is restricted, and the spacer 22 Is prevented from falling off from the restrictor support 4B.
[0039]
Further, if the spacer 22 is moved to this position, there is no support at the end of the back plate 6B of the restrictor 5B. Therefore, the restrictor 5B can be moved in the direction along the dovetail groove 11, and the restrictor 5B can be moved. The wheel 5B can be attached to and detached from the control wheel support 4B.
[0040]
Further, when the end portion of the brake element 5B is supported again by the spacer 22, the locking pin 31 is pushed again to the bottom 23A side of the pin hole 23 by pushing the pushing pin 32 toward the through hole 25 , and in this state The spacer 22 may be slightly shifted so that the locking pin 31 is not caught by the side surface of the spacer 22 and then pushed out along the recess 21. Then, when the spacer 22 is pushed to a predetermined position (a position where the axis of the pin hole 23 and the through hole 24 coincides), the locking pin 31 is pushed into the through hole 24 by the urging force of the spring 33, and the spacer 22 The position of is fixed. As a result, the end portion of the restrictor 5B is supported by the spacer 22 again.
[0041]
Thus, according to the present invention, the attaching / detaching operation of the restrictor 5B from the restrictor support portion 4B is performed by pushing the push pin 32 of the locking device 30 and moving the spacer 22 along the recess 21. It can be performed easily and work can be done easily and efficiently.
[0042]
In addition, the support structure of the restrictor 5B is composed of the spacer 22 and the locking device 30 (the locking pins 31, 32, the springs 33, 35, and the screw 34), and the number of parts can be reduced as compared with the conventional structure. The processing for the wheel support portion 4B only requires the concave portion 21 and the pin hole 23, and the number of processing steps can be reduced, so that the cost can be reduced.
[0043]
In this embodiment, supports only one end of the brake shoe 5B in scan spacers 22, as is the other end is supported by the conventionally anchor block, for holding both ends of the brake shoe 5B in the spacer 22 It is also possible to do.
[Brief description of the drawings]
FIG. 1 is a side view showing an end portion of a restrictor support portion according to an embodiment of the present invention.
FIG. 2 is a plan view of the same.
3 is a side view similarly seen from the opposite side of FIG. 1. FIG.
FIG. 4 is a front view of the same.
FIG. 5 is an enlarged sectional view showing the locking device.
FIG. 6 is a front view showing an overall configuration of a conventional caliper brake device.
FIG. 7 is a side view of the same.
[Explanation of symbols]
1 Brake caliper 2A Arm
2B arm 3 Brake disc 4A Brake supporter 4B Brake supporter 5A Brake 5B Brake 6A Back plate 6B Back plate 7 Hydraulic introduction hole 8 Mounting portion 9 Support pin 10 Moving means 11 Dovetail groove 21 Recess 22 Spacer 23 Pin hole 23A Bottom 24 Through hole 25 Through hole 26 Screw groove 30 Locking device 31 Locking pin 32 Pushing pin 32A Large diameter portion 33 Spring 34 Screw 35 Spring

Claims (6)

A brake disc that rotates integrally with each wheel of the vehicle, a brake caliper that is attached to the vehicle so as to be movable in the direction of the rotation axis of the brake disc, and an arm tip of the brake caliper that sandwiches the brake disc from both sides movement respectively supported Ru system Waco to the pair of brake shoe support portion provided to move the brake shoe to be supported by the brake shoe support portion incorporated in one of the pair of brake shoe support portion to the brake disc side And a dovetail groove extending from one end of the control member support portion toward the other end and open at both ends is formed on a side surface of the pair of control device support portions facing the other brake disc. In the caliper brake device in which a dorsal groove accommodates the back plate of the restrictor and supports the restrictor, the pair of restrictors A recess that crosses the dovetail groove is formed in the vicinity of at least one other end of the holding portion, and includes a spacer that is accommodated in the recess, and the other end on the recess side of the pair of brake supporters The pin hole that opens in the vicinity of the end portion of the recess is coaxially communicated with the pin hole that opens at the end portion of the brake supporter when the spacer is accommodated in the recess. A through hole having substantially the same diameter as the through hole is formed through the spacer, and is accommodated in the inner diameter of the pin hole and the through hole with substantially no gap, and is longer than the length of the through hole and from the recess of the pin hole. A locking pin shorter than the length on the back side, biasing means for biasing the locking pin so that the locking pin is normally disposed at a position across the through hole, and the locking pin in the pin hole the locking than of the recess Oshikomeru the back side And a small diameter push pin than down, whereas in a normal state to hold the end portion of the back plate of the brake shoe housed in the dovetail groove by a spacer housed in the recess, at the time of attaching and detaching the brake shoe pushed the locking pins on the back side of the recess of more the pin hole in the push pin, by supporting the locking pin on the side of the spacer is slightly moved in this state, in the recess of the spacer A caliper brake device which releases movement of the back plate end portion by enabling movement in a direction along the caliper. 2. The caliper brake device according to claim 1, wherein the urging means of the locking pin is a spring stretched between an end portion of the locking pin and a bottom portion of the pin hole. A biasing means for biasing the push pin so as to be pulled out of the pin hole in a normal state, and a support for supporting the push pin pulled out by the biasing means so as not to be completely detached from the pin hole. The caliper brake device according to claim 2 , further comprising means. The pushing pin support means includes a screw member that is screwed into the open end of the pin hole, and a large-diameter portion that is formed in a flange shape at the end of the pushing pin and contacts the screw member. The caliper brake device according to claim 3 . Said biasing means pushing pins is disposed on the outer circumference of the push pin, claim 4, characterized in that a spring is stretched between the open end portion of the pin hole and the front end of the push pin The caliper brake device described in 1. Said spacer, said in addition to the first of the through hole for the pin hole and communicating, the first opposite side of the spacer end near the through holes the first through when it is accommodated in the recess The caliper brake device according to any one of claims 1 to 5, wherein a second through hole penetrating in parallel with the hole is formed.

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