JP2012218603A - Variable orifice installing structure of bogie for railroad vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a variable orifice installing structure of a bogie for a railroad vehicle for easily handling a variable orifice device.SOLUTION: In this variable orifice installing structure of the bogie for the railroad vehicle, a spring support part 50 having an insertion port is formed in a position for mounting an air spring 10 in a bogie frame 5 by a receiving member 53 connected to an auxiliary air chamber 55, the air spring 10 is formed with a cylindrical part 162 projecting downward for communicating the inside of a diaphragm 11 with the auxiliary air chamber 55 of the bogie frame, the air spring 10 is installed in the bogie frame 5 by inserting the cylindrical part 162 into the receiving member 53 of the spring support part 50, and the variable orifice device 18 is positioned in the receiving member 53 for inserting the cylindrical part 162, and is installed in an attachable-detachable state.

Description

  The present invention relates to an air spring throttle device that exists between an air spring provided in a railway vehicle and an auxiliary air chamber formed in a carriage frame on which the air spring is mounted. The present invention relates to a variable throttle mounting structure for detachably mounting to a trolley.

  The railway vehicle is provided with an air spring between the rail car and the carriage to suppress vibration of the vehicle body, and the air spring communicates with an auxiliary air chamber that is an internal space of the carriage frame. Therefore, the volume of the air spring is apparently increased by the amount of the auxiliary air chamber. A variable air spring throttling device (hereinafter simply referred to as “variable throttling device”) is provided in the flow path connecting the air spring and the auxiliary air chamber, and is configured to exhibit a viscous damping characteristic. FIG. 7 is a cross-sectional view showing a variable throttle device mounting structure described in Patent Document 1 below.

  The variable throttle device 100 is configured integrally with an air spring. A lower surface plate 101 is fixed to the lower part of the air spring, and a device main body 102 is formed protruding downward at the center of the lower surface plate 101. The apparatus main body 102 has an upper air hole 103 opened inside the air spring, and a small-diameter air hole 105 and a large-diameter air hole 106 opened in the auxiliary air chamber are formed on the side. The air holes 105 and 106 are connected via a communication hole in which a spool 107 is inserted. The plunger 107 is fixed to the lower end side of the spool 107 and is biased by a spring 109 from above. A solenoid 110 is provided around the plunger 108 at the lower part of the apparatus main body 102.

  On the other hand, the insertion hole 122 is formed in the upper surface 121 on the cart frame side. The variable throttle device 100 is placed in the hole 122, and an air spring is mounted with the liner 125 sandwiched between the lower surface plate 101 and the upper surface plate 121. An inner peripheral surface of the insertion hole 122 is sealed by an O-ring 123 so that a gap is eliminated from the insertion portion of the variable throttle device 100 and the auxiliary air chamber 130 is hermetically sealed.

JP-A-60-229859

  In the conventional variable throttle mounting structure, when maintenance or replacement of the variable throttle device 100 configured integrally with the air spring is necessary, the air spring must be disassembled. However, the air spring is often disassembled and assembled by a specialist, and it is necessary to perform a pressure test by applying air after assembling to maintain the quality of the air spring. Therefore, in the conventional variable throttle mounting structure, it is inconvenient to handle the variable throttle device. Further, not only when the variable throttle device is integrated with the air spring, but also with a variable throttle device having a replaceable structure, the mounting structure for mounting the variable throttle device on the air spring side is not limited to the air spring. Disassembly and assembly were necessary and were equally inconvenient to handle.

  In order to solve such a problem, an object of the present invention is to provide a variable throttle mounting structure for a railway vehicle carriage that facilitates handling of a variable throttle device.

  A railcar bogie variable throttle mounting structure according to the present invention is for mounting a variable throttle device between an air spring and an auxiliary air chamber formed in the bogie frame of the railcar bogie. In the position where the air spring is mounted, a spring support portion having an insertion port on the upper surface of the carriage frame is formed by a cylindrical receiving member connected to an internal auxiliary air chamber, A tubular portion protruding downward is formed for communicating the inside of the diaphragm constituting the main body with the auxiliary air chamber of the carriage frame, and the tubular portion is inserted into the receiving member of the spring support portion. The air spring is attached to the bogie frame, and the variable throttle device is located in the receiving member into which the cylindrical portion is inserted, and is attached in a detachable state. To do.

Further, in the variable throttle mounting structure for a railway vehicle carriage according to the present invention, the variable throttle device has a shape in which a flange portion projects from a cylindrical main body, and is attached to a mounting seat formed inside the receiving member. It is preferable that the flange portion is pressed by a coil spring inserted into the cylindrical portion of the air spring.
Further, in the variable throttle mounting structure for a railway vehicle carriage according to the present invention, the variable throttle device has a shape in which a flange portion projects from a cylindrical main body, and corresponds to a female screw formed inside the receiving member. And it is preferable that the external thread is formed in the said flange part.

Further, in the variable throttle mounting structure for a railway vehicle carriage according to the present invention, the variable throttle device has a shape in which a flange portion projects from a cylindrical main body, and a female screw formed in a cylindrical portion of the air spring Corresponding to the above, it is preferable that a male screw is formed on the flange portion.
Further, the variable throttle mounting structure for a railcar bogie according to the present invention is formed with a rotation transmission portion that transmits a force when the variable throttle device is screwed into the female screw. It is preferable.

  According to the present invention, since the variable throttle device is separated from the air spring and can be attached to and detached from the receiving member of the spring support portion, it is not necessary to disassemble the air spring for replacement or maintenance, and handling is easy. It is. In addition, since a variable spring device is used for attaching the variable aperture device or the variable aperture device is attached by a screw, a stable attachment state can be maintained even if the state of the attachment position changes.

1 is a schematic plan view showing a part of a railway vehicle carriage. It is sectional drawing which showed the attachment structure of the air spring, and is the figure which showed the AA cross section of FIG. It is the assembly figure which showed the attachment structure of the air spring. It is sectional drawing of the spring support part shown about the variable aperture attachment structure of 2nd Embodiment. It is a partial cross section figure of the air spring shown about the variable aperture mounting structure of 3rd Embodiment. It is a partial cross section figure of the air spring shown about the variable throttle attachment structure of 4th Embodiment. It is sectional drawing shown about the conventional variable aperture mounting structure.

  Next, an embodiment of a variable throttle mounting structure for a railway vehicle carriage according to the present invention will be described below with reference to the drawings. FIG. 1 is a schematic plan view showing a part of a railcar bogie. A railcar bogie (hereinafter simply referred to as a “trolley”) 1 has side beams 2 arranged in the rail direction on the left and right sides, and the side beams 2 penetrate through two horizontal beams 3 arranged in the sleeper direction. It is. At the penetrating portion, the side beam 2 and the horizontal beam 3 are welded to form a carriage frame 5. A wheel shaft 7 is rotatably supported on the carriage frame 5 in the front-rear direction, and a unit brake, a motor, and the like (not shown) are attached. An air spring 10 that supports the vehicle body mounted on the carriage 1 is attached to the carriage frame 5.

  In the bogie frame 5, a spring support portion 50 is formed on the horizontal beam 3 protruding from the side beam 2, and the air spring 10 is mounted on the spring support portion 50. 2 is a cross-sectional view showing the variable diaphragm mounting structure of the first embodiment, and is a cross-sectional view taken along the line AA of FIG. In the air spring 10, an air spring main body is constituted by a diaphragm 11, and a circular upper surface plate 12 and a lower surface plate 13 are connected to upper and lower opening portions thereof. An air supply part 128 that protrudes upward and has a through hole is formed in the central portion of the top plate 12, and this air supply part 128 is connected to a compressor (not shown) installed in the vehicle body on the air spring 10. Is done.

  A cylindrical laminated rubber 14 is connected to the lower surface plate 13 on the lower side. In the laminated rubber 14, donut-shaped metal plates 141 and rubber members 142 are alternately stacked and bonded, and a donut-shaped bonding plate 15 is integrated on the upper surface. The bottom plate 13 and the joining plate 15 are fastened with bolts, and the diaphragm 11 and the laminated rubber 14 constitute a single air spring 10. On the other hand, on the lower surface of the laminated rubber 14, a lower member 16 having a communication pipe 162 that communicates the inside of the diaphragm 11 and the auxiliary air chamber 55 formed on the cart frame 5 side is fixed.

  Here, FIG. 3 is an assembly view showing the variable throttle mounting structure. However, regarding the air spring, the portion of the laminated rubber 14 excluding the diaphragm 11 is shown. In the lower receiving member 16, a lower plate 161 is fixed to the lower surface of the laminated rubber 14, and a communication pipe 162 protrudes in the vertical direction at the center. The upper end of the communication pipe 162 is inserted into a hole formed at the center of the lower surface plate 13 of the diaphragm 11, and the portion protruding downward is inserted into the cart frame 5 side.

  In the bogie frame 5, a spring support portion 50 indicated by a wavy line in FIG. 1 is formed on the outside of the side beam 2 through which the horizontal beam 3 penetrates. 2 and 3 show the spring support portion 50 of the carriage frame 5. The spring support portion 50 has a box shape with an airtight inside. A hole serving as an insertion opening is formed in the upper surface plate 51 of the spring support portion 50, and a cylindrical receiving member 53 is fixed. The receiving member 53 is connected to an auxiliary air chamber 55 formed in the internal space of the spring support portion 50 so that the communication pipe 162 is fitted therein.

  An air spring communication pipe 162 is inserted into the receiving member 53, and the variable throttle device 18 is accommodated therein. Although a specific description of the variable throttle device 18 is omitted, the flange portion 182 projects from the cylindrical main body 181. The receiving member 53 is formed with a stepped hole having a lower hole diameter, and has a mounting seat 531 on which the flange portion 182 is placed. The variable throttle device 18 is positioned in the receiving member 53 by the communication pipe 162 inserted into the receiving member 53 pressing the flange portion 182 into the mounting seat 531.

The air spring 10 is connected to the carriage frame 5 by fitting the communication pipe 162 to the receiving member 53, but there is no vertical restriction between them. When the wheel diameter is reduced due to the wheel being worn away by traveling or the like, the height of the carriage frame 5 is reduced, and therefore the liner 52 is inserted between the lower plate 161 and the upper surface plate 51 to adjust the height. . If the distance between the lower plate 161 and the upper surface plate 51 is increased due to an increase in the number of liners 52, the variable throttle device 18 is not pressed by the communication pipe 162.

  Therefore, in the present embodiment, the coil spring 21 is provided so that the variable throttle device 18 can be appropriately attached. Specifically, a collar 22 that receives the coil spring 21 is inserted into the communication pipe 162, and the coil spring 21 is loaded between the collar 22 and the flange portion 182 as shown in FIG. 2. As a result, the variable throttle device 18 is positioned without being unstable in the receiving member 53 because the flange portion 182 is always pressed against the mounting seat 531 by the urging force of the coil spring 21.

  According to the variable throttle mounting structure of the present embodiment, the variable throttle device 18 is separated from the air spring 10 and can be attached to and detached from the receiving member 53 of the spring support portion 50. There is no need to disassemble 10 and handling is easy. Further, since the variable throttle device 18 is positioned by the coil spring 21, even when the number of the liners 52 increases and the distance between the lower plate 161 and the upper plate 51 increases, the flange portion 182 is always pressed against the mounting seat 531. The positioning state is maintained.

(Second Embodiment)
FIG. 4 is a cross-sectional view of the spring support 50 shown for the variable throttle mounting structure of the second embodiment. The air spring is omitted because it is common to the first embodiment, and in the drawings, the same reference numerals are given to the components common to the first embodiment.
In the variable throttle mounting structure of the present embodiment, the variable throttle device 18 is detachably attached to the receiving member 53 of the spring support portion 50 with screws. Therefore, the variable aperture device 18 is formed with a flange portion 183 having a male screw 201 cut on the outer peripheral surface. On the other hand, a female screw 202 is formed on the receiving member 53 on the inner diameter side of the mounting seat 531.

  Therefore, in this variable throttle mounting structure, the variable throttle device 18 is mounted in the spring support portion 50 by being screwed to the receiving member 53. Therefore, even when the distance between the lower plate 161 (see FIG. 2) and the upper surface plate 51 is increased due to the increase in the liner 52, the variable aperture device 18 is always positioned in the receiving member 53. Moreover, since the variable aperture device 18 is a detachable attachment with screws, it is easy to handle during replacement and maintenance.

(Third embodiment)
FIG. 5 is a partial cross-sectional view of the air spring shown for the variable throttle mounting structure of the third embodiment. The spring support portion 50 is omitted because it is common to the first embodiment, and the same reference numerals are given to the components common to the first embodiment in the drawings.
In the variable throttle mounting structure of the present embodiment, the variable throttle device 18 is detachably attached to the communication pipe 162 of the air spring 10 with a screw. Therefore, the variable aperture device 18 is formed with a flange portion 184 having a male screw 203 cut on the outer peripheral surface. On the other hand, a female thread 204 is formed on the communication pipe 162 on the inner diameter side of the tip.

  Therefore, in this variable throttle mounting structure, the variable throttle device 18 is attached to the air spring 10 by being screwed into the communication pipe 162. Therefore, even when the distance between the lower plate 161 (see FIG. 2) and the upper surface plate 51 increases due to the increase in the liner 52, the variable throttle device 18 is always positioned in the receiving member 53 of the spring support portion 50. It is in. Moreover, since the variable aperture device 18 is a detachable attachment with screws, it is easy to handle during replacement and maintenance.

(Fourth embodiment)
FIG. 6 is a partial cross-sectional view of the air spring shown for the variable throttle mounting structure of the fourth embodiment. The spring support portion 50 is omitted because it is common to the first embodiment, and the same reference numerals are given to the components common to the first embodiment in the drawings.
The variable throttle mounting structure of the present embodiment is a modification of the third embodiment, in which the variable throttle device 18 is detachably attached to the communication pipe 162 of the air spring 10 with screws. Therefore, the variable throttle device 18 is formed with a flange portion 185 having a male screw 205 cut on the outer peripheral surface, and the communication pipe 162 is formed with a female screw 206 on the inner diameter side of the distal end portion. Further, the variable aperture device 18 is formed with a nut portion 186 that transmits the rotation at the time of attachment.

  Therefore, in this variable throttle mounting structure, rotation is given to the variable throttle device 18 via the nut portion 186, whereby the variable throttle device 18 is attached to the communication pipe 162 of the air spring 10. Therefore, even when the distance between the lower plate 161 (see FIG. 2) and the upper surface plate 51 increases due to the increase in the liner 52, the variable throttle device 18 is always positioned in the receiving member 53 of the spring support portion 50. It is in. Moreover, since the variable aperture device 18 is a detachable attachment with screws, it is easy to handle during replacement and maintenance.

As mentioned above, although embodiment was described about the variable throttle attachment structure of the bogie for rail vehicles which concerns on this invention, this invention is not limited to this, A various change is possible in the range which does not deviate from the meaning.
For example, the nut portion 186 of the fourth embodiment provided so that the variable throttle device 18 can be easily mounted may be formed in the variable throttle device 18 mounted on the receiving member 53 side as in the second embodiment. .

1 bogie 5 bogie frame 10 air spring 11 diaphragm 14 laminated rubber 18 variable throttle device 21 coil spring 50 spring support portion 53 receiving member 55 auxiliary air chamber 162 communication pipe

Claims (5)

In the variable throttle mounting structure of a railway vehicle carriage for attaching a variable throttle device between the air spring and the auxiliary air chamber formed in the carriage frame of the railway carriage truck,
In the bogie frame, a spring support portion having an insertion port on the upper surface of the bogie frame is formed by a cylindrical receiving member connected to an internal auxiliary air chamber at a position where the air spring is mounted,
The air spring is formed with a cylindrical portion protruding downward to communicate the inside of the diaphragm constituting the main body with the auxiliary air chamber of the carriage frame,
The air spring is attached to the carriage frame by inserting the cylindrical portion into the receiving member of the spring support portion, and the variable throttle device is inserted into the receiving member into which the cylindrical portion is inserted. A variable throttle mounting structure for a railway vehicle carriage characterized by being positioned and mounted in a detachable state. In the variable throttle mounting structure for a railway vehicle carriage according to claim 1,
The variable throttle device has a shape in which a flange portion projects from a cylindrical main body, and the flange portion is formed by a coil spring inserted into a cylindrical portion of the air spring with respect to a mounting seat formed inside the receiving member. A structure for attaching a variable throttle for a bogie for a railway vehicle, characterized in that is pressed. In the variable throttle mounting structure for a railway vehicle carriage according to claim 1,
The variable throttle device has a shape in which a flange portion projects from a cylindrical main body, and a male screw is formed in the flange portion corresponding to a female screw formed in the receiving member. A variable throttle mounting structure for a railcar bogie characterized by In the variable throttle mounting structure for a railway vehicle carriage according to claim 1,
The variable throttle device has a shape in which a flange portion projects from a cylindrical main body, and a male screw is formed on the flange portion corresponding to a female screw formed on a cylindrical portion of the air spring. A variable throttle mounting structure for a railway vehicle carriage characterized by comprising: In the variable throttle mounting structure for a railway vehicle carriage according to claim 3 or claim 4,
The variable throttle device is formed with a rotation transmission portion that transmits a force when the male screw is screwed into the female screw.

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