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Sanding device, intermediate train and D-series high-speed train

A technology of sand spreading device and EMU, applied to locomotives and other directions, can solve the problems of fracture, rubber nylon pipe clamp stress fatigue, etc., achieve the effect of shortening the length, reducing the possibility of fatigue fracture under long-term stress, and avoiding fatigue fracture

Pending Publication Date: 2019-04-16
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the hose 5 will swing along with the movement of the mounting frame during the movement of the EMU, the rubber and nylon pipe clamp may break due to long-term stress and fatigue.

Method used

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  • Sanding device, intermediate train and D-series high-speed train
  • Sanding device, intermediate train and D-series high-speed train
  • Sanding device, intermediate train and D-series high-speed train

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Such as Figure 5-10 As shown, the invention discloses a sand spreading device, which is used for intermediate cars of EMUs.

[0055] Specifically, the intermediate vehicle includes an underframe 1 and an equipment compartment 9 , and the equipment compartment 9 is installed upside down on the underframe 1 . The inner bottom surface of the equipment compartment 9 is welded with a horizontal chute.

[0056] The sand spreading device comprises a sand box 3, a hard pipe 4, a flexible pipe 5, a metal pipe clamp 10 and a tensioning device 11.

[0057] Sand box 3 is fixed on the chute. Specifically, the bottom end of the sand box 3 is welded on the chute, which increases the volume of the sand box 3 . In order to further increase the volume of the sand box 3, the sand box 3 is made into an irregular shape, and the axis lines of the inlet at the top of the sand box 3 and the outlet at the bottom end do not coincide, so that the sand box 3 is convenient for sand discharge. Sp...

Embodiment 2

[0065] In the second embodiment provided by the present invention, the sand spreading device in this embodiment is similar in structure to the sand spreading device in the first embodiment, and the similarities will not be repeated, and only the differences will be introduced.

[0066] In this embodiment, the present invention specifically discloses that the tensioning device 11 includes a suspension base 1101 , lifting lugs 1102 , steel wire ropes 1103 and rope pullers 1104 . Wherein, the hanger 1101 is fixed on the base frame 1 , specifically, the hanger 1101 is welded on the base frame 1 , which improves the installation strength between the hanger 1101 and the base frame 1 . It should be noted that the hanger 1101 can also be detachably connected to the bottom frame 1 by screws or the like.

[0067] One end of the lifting ear 1102 is fixed on the suspension base 1101 , and the other end of the lifting ear 1102 is connected with a steel wire rope 1103 . One end of the rope...

Embodiment 3

[0078] The present invention provides an intermediate vehicle, including the sand spreading device in any one of the above embodiments.

[0079] Specifically, the intermediate vehicle includes an underframe 1 and an equipment compartment 9 , and the equipment compartment 9 is installed upside down on the underframe 1 . The inner bottom surface of the equipment compartment 9 is welded with a horizontal chute.

[0080] Sand box 3 is fixed on the chute. The outlet at the bottom of the sand box 3 is closer to the wheel sandblasting nozzle of the EMU relative to the entrance at the top of the sand box 3 .

[0081] One end of the hard pipe 4 communicates with the outlet at the bottom of the sand box 3 , specifically, the hard pipe 4 and the outlet of the sand box 3 are connected through an angled joint 14 . The side of the sandblasting nozzle on the wheel of the equipment cabin 9 near the EMU is provided with an upward concave notch.

[0082] Specifically, the equipment compartme...

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Abstract

The invention discloses a sanding device, an intermediate train and a D-series high-speed train. The sanding device comprises sand boxes, hard tubes, hoses, metal tube clamps and tensioning devices, the sand boxes are fixed in sliding grooves, and the size of the sand boxes is increased. One end of each hard tube is communicated with an outlet of the bottom of the corresponding sand box; the side,close to a sandblast nozzle on a wheel of the D-series high-speed train, of an equipment cabin is provided with an upward concave notch, the side wall of the notch is a connecting plate and is provided with mounting holes lower than outlets of the sand boxes, the other ends of the hard tubes are fixed in the mounting holes, so that the hard tubes have a certain height difference, and sand discharging of the hard tubes is facilitated. The length of the hoses is reduced, and the swing magnitude of the hoses is reduced. One end of each hose is communicated with the corresponding hard hose, the other end of each hose is communicated with the mounted sandblast nozzle, under tensioning of the tensioning devices, the hoses are higher than the sandblast nozzle, and therefore the hoses conveniently discharge sand to the sandblast nozzle. By fixing the metal tube clamps to the hoses, the danger of fatigue fracture caused by the use of rubber nylon tube clamps is avoided.

Description

technical field [0001] The invention relates to the technical field of railway transportation, in particular to a sand spreading device, an intermediate car and an EMU. Background technique [0002] The existing domestic high-speed EMUs mainly use adhesive braking. With the increase of vehicle speed, the adhesion coefficient between wheel and rail decreases, and the probability of wheel skidding increases. In order to improve the adhesion state of the poor rail surface, the working environment of the wheel-rail contact surface can be effectively improved through the sand spreading device, and the adhesion coefficient can be improved. Usually, the higher the speed level of the high-speed EMU, then only the head car is arranged to sprinkle sand on the wheel rails of the front car. If there is no adhesion, it is necessary to arrange a sand spreading device in the middle car to improve the adhesion of the wheels of the next few cars. [0003] On the middle car of the existing E...

Claims

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Application Information

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IPC IPC(8): B61C15/10
CPCB61C15/10
Inventor 姚风龙王志龙刘金柱石雪娇赵杨坤
Owner CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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