JPH10181596A - Axle spring gear for rolling stock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily adjust the height of an axle spring from below a truck by connecting a hydraulic pump to an oil filling port, applying oil pressure to move an axle spring sea upward, and forming a clearance between the axle spring seat and an axle box. SOLUTION: An axle spring seat 4 is provided on an axle box 1, and a cylinder 5 is composed of these two members. A liner 6 is inserted between the axle spring seat 4 and the axle box 1. A coil spring 2 is arranged on the axle spring seat 4, and a truck frame 3 is supported through a sprung member 7 and rubber 8. Appropriate clearance dimensions are provided between the sprung member 7 and the axle spring seat 4 to constitute a stopper. The axle box 1 is provided with a lead-in hole 9 for leading oil into a cylinder 5, and an oil filling port 10, and a connector 11 is screwed therein. At the time of making liner adjustment, a hydraulic pump is connected to the connector 11 to supply oil pressure. The axle spring seat 4 is thereby moved upward to push up the coil spring 2, thus making liner adjustment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft spring device for a railway vehicle, and more particularly to a shaft spring device in which a shaft spring liner can be easily adjusted in a standing state.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Application Laid-Open No. 58-14525
As shown in No. 6, in a shaft spring device in which a spring member is disposed on a shaft box, a spacer is inserted between the shaft box and the bogie frame, and a screw hole formed in the unsprung member from above the bogie frame. The height of the shaft spring is adjusted by raising or lowering the spring to provide a gap between the shaft box body and the shaft spring seat and inserting or removing the liner.

[0003]

In such a conventional system, when the height of the shaft spring is adjusted in a state where the vehicle body is mounted on the bogie, it is necessary to perform a spring killing operation above the bogie frame. In some cases, the work was performed in a very narrow space between the bogie frame and the vehicle body, and the workability was poor, requiring a lot of time.

An object of the present invention is to provide a so-called octopus-type shaft spring device in which a spring member is disposed immediately above a shaft box, so that the height of the shaft spring can be easily adjusted from below the bogie to improve workability. To improve.

[0005]

In order to achieve the above object, as a method of killing springs with a hydraulic jack from below a bogie, a hydraulic cylinder is constituted by a shaft box and a shaft spring seat.
A hydraulic pump is connected to an oil supply port provided in the shaft box body to adopt a shaft spring structure capable of jacking up.

[0006] A cylinder portion is formed on the upper part of the shaft box body by the shaft box body and the shaft spring seat, and a liner can be inserted between the shaft spring seat and the shaft box body.

[0007] The cylinder portion is configured to withstand sufficient internal pressure by a seal member such as an O-ring. The shaft box is provided with a hydraulic path and oil supply port for introducing oil into the cylinder section, a quick joint is attached to the oil supply port, oil can be supplied to the cylinder by connecting a hydraulic pump, and when the hydraulic pump is removed A function to seal the oil in the cylinder so that it does not escape to the outside is provided. Further, a stopper is provided between the shaft spring seat and the sprung member so that the cylinder does not abnormally move.

At the time of adjusting the liner, the hydraulic pump is connected to the oil supply port, and the hydraulic spring is applied to move the shaft spring seat upward, so that a gap is formed between the shaft spring seat and the shaft box body. At this time, if a required amount of the liner is inserted and removed, and then the oil pressure in the cylinder is removed, the shaft spring seat is lowered and the liner adjustment is completed. Although oil is used in the above working example, it can be replaced by water or other fluids.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIGS. FIG. 1 shows a typical octopus-type shaft spring device,
The bogie frame 3 is supported by disposing a coil spring 2 on the axle box 1. The support in the front-rear and left-right directions is achieved by extending the arm 13 from the axle box 1 shown in FIG.
And a method of elastically coupling to the bogie frame 3 by providing a support plate 14 as shown in FIG. 3, or a method of attaching cushioning rubber 15 to both sides of the axle box 1 and coupling to the bogie frame 3 as shown in FIG.

FIG. 4 is a detailed view of the shaft spring device of FIG. A shaft spring seat 4 is provided on the shaft box 1, and the two members constitute a cylinder 5. A liner 6 is inserted between the shaft spring seat 4 and the shaft box 1. The coil spring 2 is disposed on the shaft spring seat 4, and the coil spring 2 supports the bogie frame 3 via a sprung member 7 and rubber 8. A stopper is provided between the sprung member 7 and the shaft spring seat 4 with an S dimension provided to prevent an abnormal stroke of the cylinder 5. The axle box 1 is provided with an introduction hole 9 for introducing oil to the cylinder 5 and an oil supply port 10, and a connector 11 is screwed into the oil supply port 10.

When adjusting the liner, as shown in FIG. 5, a hydraulic pump 12 is connected to the connector 11 to supply hydraulic pressure, whereby the shaft spring seat 4 moves upward to push up the coil spring 2 and Enables liner adjustment.

[0012]

According to the present invention, there is an effect that a shaft spring device in which the height of the shaft spring can be easily adjusted even when the player is in a standing state can be constructed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of a shaft spring device according to the present invention.

FIG. 2 is a longitudinal sectional view showing another embodiment of the shaft spring device according to the present invention.

FIG. 3 is a longitudinal sectional view showing still another embodiment of the shaft spring device according to the present invention.

FIG. 4 is a detailed view of a main part of the present invention.

FIG. 5 is an explanatory diagram of a liner adjustment state in FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Axle box, 2 ... Coil spring, 3 ... Bogie frame, 4 ... Shaft spring seat, 5 ... Cylinder, 6 ... Liner, 7 ... Spring member, 8
... Rubber, 9 ... Introduction hole, 10 ... Fill opening, 11 ... Connector,
12 ... Hydraulic pump.

Claims (1)

[Claims] 1. A shaft spring device for supporting a bogie frame by disposing a spring member immediately above a shaft box attached to both ends of a wheel shaft via bearings, wherein a shaft spring seat and a shaft box provided on the shaft box are provided. A shaft spring device for a railway vehicle, wherein a cylinder is constituted by: