Axle box suspension for railway car
a technology for railway cars and axle boxes, applied in axle box mounting, transportation and packaging, railway components, etc., can solve the problems of increased side beam size, difficult bolt tightening operation in this area, and excessive time and work, and achieve the effect of facilitating operation
Inactive Publication Date: 2006-03-30
HITACHI LTD
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Benefits of technology
[0009] The object of the present invention is to provide an axle box suspension for a railway car, which is capable of facilitating the operation related to fixing the support rubber to the bogie frame.
[0010] Another object of the present invention is to provide an axle box suspension for a railway car, which is equipped with an axle box that is small and light weight.
Problems solved by technology
On the other hand, wheels attached to the axle are disposed on the inner side of the side beam in the width direction of the bogie, making the bolt tightening operation in this area difficult since the operation must be carried out through the narrow gap formed between the side beam and the wheel.
Of these bolts, half must be tightened through the gap between the side beams and the wheels, which required excessive time and work.
Therefore, it was necessary to provide to the side beams spaces for disposing such large-sized support seats, which inevitably increased the size of the side beams, hindering the effort to reduce the size and weight of the bogie frame itself.
Method used
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[0016] One preferred embodiment according to the present invention will now be explained with reference to FIGS. 1 through 3. A bogie frame 5 illustrated in FIG. 1 shows an end portion of a side beam 6 on which an axle box 10 is disposed. The axle box 10 is disposed on both ends of an axle 11 via a bearing. The axle box 10 has on both sides thereof with respect to the traveling direction of the car a rubber support portion 12, respectively. The rubber support portion 12 is formed to have a semicircular outer circumference portion and a round inner hole. This hole is opened to the upper direction, and the center axis thereof is disposed in the perpendicular direction. A support rubber 30 mentioned later is mounted to the hole of each rubber support portion 12. A coil spring support seat 23 is formed to the top portion of the axle box 10 to which is fixed a lower seat 24 receiving the lower end of coil springs 21 and 22. The coil spring support seat 23 is equipped with a projection 23...
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The object of the present invention is to provide an axle box suspension for a railway car with a simple structure to fix coil springs and support rubbers, and enabling easy mounting operation. Coil springs 21 and 22 are disposed on top of an axle box 10. Support rubbers 30 are disposed on front and rear portions of the axle box 10 with respect to the traveling direction of the railway car. A support shaft 31 is disposed at the axial center position of the support rubber 30, and the upper end of the support shaft 31 is passed through the side beam 6. The upper end of the support shaft 31 protruding from the upper surface of the side beam 6 is fixed via a nut. The operation of fixing the support shaft 31 to the side beam 6 by tightening the nut 40 can be performed at the upper surface area of the side beam 6, so the operation is facilitated.
Description
[0001] The present application is based on and claims priority of Japanese patent application No. 2004-283599 filed on Sep. 29, 2004, the entire contents of which are hereby incorporated by reference. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to an axle box suspension for a railway car. [0004] 2. Description of the Related Art [0005] In normal, a bogie of a railway car is constructed so that a bogie frame is supported via two axles. The bogie frame is composed of two side beams and a cross beam connecting the side beams. An axle box housing a bearing is disposed at both ends of each axle, and each axle box supports the bogie frame to the axle. Each axle box supports the bogie frame via an elastic support member comprising a coil spring, a laminated rubber or a roll rubber. The axle box suspension for a railway car determines the positions of the axles with respect to the bogie frame in the traveling direction and the left / right...
Claims
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Login to View More IPC IPC(8): B61F5/26
CPCB61F5/30B60G11/52B60G2204/124B60G2204/125B60G2300/10B60Y2200/30B61F15/20
InventorWATANABE, TAKAOHIRAISHI, MOTOMIIWASAKI, KATSUYUKINAKAMURA, MINORU
OwnerHITACHI LTD