JP2010018200A - Axle spring height adjustment device of truck for railway vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an axle spring height adjustment device of a truck for a railway vehicle for stably performing work. <P>SOLUTION: The axle spring height adjustment device 20 of the truck for the railway vehicle has an elastic support structure that a spring support member 16 is inserted to a cylindrical part 12 formed at an axle box body 3 side and an axle spring 15 is provided between the spring support member 16 and a side beam 1. The axle spring height adjustment device 20 of the truck for the railway vehicle has a reaction force receiving member 21 caught in the receiving part 13 in which an installation part 211 is positioned below the cylindrical part 12 and a jack means 22 mounted to the installation part 211 and pushing up the spring support member 16 from below relative to the truck for the railway vehicle constituted such that the receiving part 13 projected in a radial direction on an upper end part is formed on the cylindrical part 12 and a liner is inserted to a clearance between a flange 16a formed on the spring support member 16 and the receiving part 13. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a railcar bogie, and to a shaft spring height adjusting device for facilitating the insertion and removal of a liner that adjusts the height of a shaft spring of a shaft box support device.

  In order to travel safely at high speed, the railroad wheel must follow the state of the track in order to travel safely. For this purpose, the wheel load, which is the force by which the wheel presses the rail, must be balanced. For this reason, in the railway vehicle carriage, the wheel load balance is adjusted by the axle box support device provided between the carriage frame and the axle. As the axle box support device, for example, a system using laminated rubber described later is known.

Laminated rubber type shaft springs cause stickiness in the rubber due to aging, but this will cause a problem with the wheel load balance of the vehicle. Adjustments are made. FIG. 5 is a diagram showing a method for adjusting the height of the shaft spring. Adjustment of the height of the shaft spring 101 is performed by lifting the center rod 102 so as to float from the receiving portion 105 of the shaft box 103 and inserting a liner into the gap S. Conventionally, such height adjustment has been performed by a hydraulic jack 110 placed on a rail surface (in some cases, the ground) L as shown in the figure. In addition, as shown in Patent Document 1 below, a shaft box supporting device having a hydraulic cylinder is proposed.
JP-A-6-329021

  In such a conventional adjustment method, the reaction force of the hydraulic jack 110 needs to be taken on the rail surface, but it cannot be performed in a commercial operation state, and it has been necessary to put it in a lead-in line at a vehicle base or the like. The work performed on the rail surface L is unstable because the distance from the ground position to the lower end of the center rod 102 is long, and the hydraulic jack 110 becomes tall to perform the work. Therefore, in the conventional method, when the center rod 102 is lifted and a load is applied, the hydraulic jack 110 may fall down. On the other hand, when using a short hydraulic jack in order to reduce the risk, it is necessary to prepare a stand for installing the hydraulic jack separately.

  Accordingly, an object of the present invention is to provide a shaft spring height adjusting device for a railway vehicle carriage for stably performing work in order to solve the above-described problems.

The apparatus for adjusting the height of an axle spring for a railway vehicle carriage according to the present invention has a spring support member inserted into a cylindrical portion formed on the axle box side, and the axle spring is interposed between the spring support member and the side beam. It has an elastic support structure provided, and its cylindrical part is formed with a receiving part projecting radially at the upper end part, and a liner is inserted between the flange formed on the spring support member and the receiving part A reaction force receiving member that is hooked on the receiving portion so that the installation portion is positioned below the tubular portion, and the spring support member that is attached to the installation portion with respect to the railway vehicle carriage configured as described above It has a jack means which pushes up from below.
Also, in the railcar bogie height adjusting device for a railcar according to the present invention, the reaction force receiving member is integrally formed with two suspension arms each having a claw formed at the tip thereof, and an installation stand having a notch. The jack means is formed by fixing a suspension ring to a cylindrical hydraulic jack, and the hydraulic jack is inserted into a notch portion of the installation base, and the suspension ring It is preferable that it is supported by the installation base via

  Therefore, according to the present invention, since the jack means is supported directly under the spring support member, the position and force for supporting the jack means can be applied without using a tall hydraulic jack as in the prior art. Since the lower end of the spring support member is close, stable work can be performed. Furthermore, since the present invention attaches the shaft spring height adjusting device to the axle box body of the railway vehicle carriage, it can work regardless of the location, even when the railway vehicle is in commercial operation. A liner can be inserted.

Next, an embodiment of a shaft spring height adjusting device for a railcar bogie according to the present invention will be described below with reference to the drawings. FIG. 1 is a view showing a shaft box support portion in a state where the shaft spring height adjusting device of the present embodiment is mounted.
The railway vehicle has a vehicle body mounted on a railway vehicle carriage via an air spring. The railcar bogie has a bogie frame formed by connecting horizontal beams in the sleeper direction to the left and right side beams 1 along the rail, and a main motor, a unit brake, and the like are mounted thereon.

  Wheels 2 are provided on the front, rear, left and right of the carriage frame. The wheels 2 are rotatably supported by a shaft box 3 provided on the side beam 1. The axle box support device that elastically supports the carriage with the wheel 2 is provided for the side beam 1 as shown in the figure, and the wheel axle of the wheel 2 is supported by the bearing portion 4 of the axle box body 3. The shaft box 3 is configured with a pair of elastic support structures 5 and 5 so as to sandwich the bearing portion 4. Here, FIG. 2 is an AA cross section of FIG. 1 showing the elastic support structure 5, and particularly shows a working state of adjusting the height of the shaft spring. FIG. 3 is a perspective view showing a shaft spring height adjusting device attached to the shaft box body.

  The elastic support structure 5 has a support arm 11 projecting from the shaft box 3, a cylindrical portion 12 is formed at the tip portion thereof, and a vessel-shaped receiving portion 13 having an enlarged diameter is formed above the support portion 11. A shaft spring 15 is attached to the cylindrical portion 12 so as to be inserted from above. The shaft spring 15 has a center rod 16 in the center, rubber plates and metal plates are alternately laminated in the radial direction, and the outermost rubber plate is bonded to the casing 17 and integrated.

  Further, the center rod 16 is formed with a flange portion 16 a projecting radially below the shaft spring 15, and a columnar insertion portion 16 b that can be inserted into the cylindrical portion 12 is formed therebelow. Therefore, the center rod 16 is positioned by inserting the insertion portion 16 b into the cylindrical portion 12 and abutting the flange portion 16 a on the receiving portion 13. At that time, a liner is inserted into the gap S between the flange portion 16a and the receiving portion 13 depending on the situation, and the height of the shaft spring is adjusted. A fixing plate (not shown) is applied to the lower end of the cylindrical portion 12, a bolt penetrating the fixing plate is screwed to the center rod 16, and the shaft spring 15 is attached to the tip of the support arm 11. On the other hand, the casing 17 is fixed to the side beam 1 above.

  Next, the shaft spring height adjusting device used for the shaft box support device will be described. As shown in FIG. 3, the shaft spring height adjusting device 20 lifts the center rod 16 by being attached to the reaction force receiving member 21 suspended from the support arm 11 of the shaft box body 3 and the reaction force receiving member 21. The hydraulic jack 22 is used. The reaction force receiving member 21 has two suspension arms 212 protruding upward from an installation base 211 to which the hydraulic jack 22 is attached. The installation base 211 is formed with a notch 213 for installing the hydraulic jack 22, and the suspension arm 212 is formed with a claw 214 facing inward at both ends.

  As shown in FIG. 4, the hydraulic jack 22 has a male screw 222 cut on the rod side of the jack main body 221, and a suspension ring 225 having a female screw 226 is attached thereto to be integrated. As shown by an arrow in FIG. 3, the axial spring height adjusting device 20 has a jack main body 221 inserted into the notch 213 from the side, a suspension ring 225 hooked on the installation base 211, and the hydraulic jack 22 counteracted. Attached to the force receiving member 21. Therefore, the hydraulic jack 22 is at an intermediate position between the two suspension arms 212, and the piston rod 223 faces upward.

  As shown in FIG. 2, the shaft spring height adjusting device 20 is suspended so that the reaction force receiving member 21 hooks the claw 214 of the suspension arm 212 on the receiving portion 13 of the shaft box body 3. At this time, alignment is performed so that the center of the hydraulic jack 22 substantially coincides with the axis of the center rod 16. Such a shaft spring height adjusting device 20 can be similarly attached to the shaft springs 15 provided at two locations of the shaft box 3.

  Therefore, when the hydraulic jack 22 is extended with respect to the shaft spring height adjusting device 20 attached to the shaft box 3, the piston rod 223 is raised and the center rod 16 is pushed up from the lower end side as shown in FIG. . Accordingly, the flange portion 16a of the raised center rod 16 floats, and a gap S is formed between the flange portion 16a and the receiving portion 13 on the shaft box body 3 side, and the liner can be inserted. At this time, the reaction force received by the hydraulic jack 22 acts on the axle box body 3 itself via the reaction force receiving member 21 hooked on the receiving portion 13 by the suspension arm 212.

  Therefore, in the axial spring height adjusting device 20 of the present embodiment, the hydraulic jack 22 is supported directly below the center rod 16, so that the hydraulic jack 22 can be used without using a tall hydraulic jack as in the prior art. Since the distance between the position where the jack 22 is supported and the lower end of the center rod 16 where the force acts is short, stable work can be performed. Further, since the shaft spring height adjusting device 20 is attached to the shaft box 3, the work can be performed regardless of the location, and the liner can be inserted even when the railway vehicle is in commercial operation. became. The shaft spring height adjusting device 20 can achieve such an effect with a simple configuration including the reaction force receiving member 21 and the hydraulic jack 22.

The shaft spring height adjusting device of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the device.
For example, in the above-described embodiment, the hydraulic jack 22 is attached so as to be hooked by the suspension ring 225. However, the jack means is not limited to the hydraulic jack, and if the jack has a short vertical dimension, it receives the reaction force. It may be configured such that a jack is placed on the member installation base.
Further, in the embodiment, the shaft spring height adjustment for the axle box support device using the laminated rubber has been described. For example, the center rod 16 has a flange-shaped spring receiver, and the spring receiver and the side beam 1 A shaft box supporting device that holds a coil spring between them may be used, and the shaft spring height adjusting device of the present invention does not limit the target shaft spring to laminated rubber.

It is the figure which showed the axle box support part of the state which mounted | wore with the axial spring height adjustment apparatus of embodiment. It is AA sectional drawing of FIG. 1 which showed the operation state of axial spring height adjustment. It is the perspective view which showed the axial spring height adjustment apparatus of embodiment attached to a shaft box body. It is the figure which showed the hydraulic jack which comprises the axial spring height adjustment apparatus of embodiment. It is the figure which showed the adjustment method of the conventional axial spring height.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Side beam 2 Wheel 3 Shaft box 5 Elastic support structure 12 Cylindrical part 13 Receiving part 15 Shaft spring 16 Center rod 20 Shaft spring height adjustment apparatus 21 Reaction force receiving member 22 Hydraulic jack

Claims (2)

A spring support member is inserted into a cylindrical portion formed on the shaft box body side, and an elastic support structure in which an axial spring is provided between the spring support member and the side beam has an upper end on the cylindrical portion. For a railcar carriage configured such that a receiving portion protruding in the radial direction is formed on the portion, and a liner is inserted between the flange formed on the spring support member and the receiving portion,
A reaction force receiving member that is hooked on the receiving portion so that the installation portion is positioned below the cylindrical portion, and a jack unit that is attached to the installation portion and pushes up the spring support member from below. An apparatus for adjusting the height of a shaft spring of a railway vehicle carriage characterized by the above. In the axial spring height adjusting device for a railway vehicle carriage according to claim 1,
The reaction force receiving member is one in which an installation base having a notch is integrally formed with two suspension arms each having a claw at the tip, and the jack means is a cylindrical hydraulic jack. The suspension ring is fixed to the hydraulic jack, and the hydraulic jack is inserted into the notch of the installation base and supported by the installation base via the suspension ring. Axle spring height adjustment device for railcar bogies.

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