Antiskid material sprinkling apparatus

Abstract

This slip preventive material spraying device is provided with a slip preventive material storage container 12 storing the slip preventive material, an air introduction pipe 13 provided in the slip preventive material storage container, a compressed air supply pipe 14 supplying compressed air to the air introduction pipe, a blowout hole 15 formed in the air introduction pipe and spraying the compressed air in the slip preventive material storage container, a nozzle part 16 disposed in the air introduction pipe, a mixing tube 17 connected with the air introduction pipe and mixing the slip preventive material and air, a slip preventive material suction hole 18 formed in the mixing tube, a communicating pipe 19 with its one end communicated with the mixing tube and the other end opened in the slip preventive material storage container, a spraying pipe connected with the mixing tube and spraying the slip preventive material with the compressed air, and sprays the slip preventive material.

Description

technical field [0001] The present invention relates to a non-slip material spraying device for spraying non-slip material between wheels and rails of a railway vehicle in order to ensure the coefficient of friction between them. Background technique [0002] For example, in order to prevent slipping between the wheels of a railway vehicle traveling at high speed on the rails and the rails, or to ensure necessary frictional force, various devices for sprinkling sand and the like have been proposed. [0003] For example, such a device has been proposed (patent document 1 published before), that is, a sand spraying pipe for sand spreading is installed on a sand box stored with sand, and an air pipe and an air pipe for feeding air into the sand spraying pipe are provided. The air is sent into the air pipe in the sand box, and the sand is pushed out by sending the compressed air into the sand pipe, and the sand and air are introduced into the sand pipe, and the sand is scattered...

AI Technical Summary

Problems solved by technology

[0006] However, in the anti-slip material spraying device of the above structure, the sand box (container) is pressurized, and the injection amount of sand is adjusted by changing the pressure. The force of the non-slip material of the box decreases sharply, and the injection amount is unstable or cannot be injected, resulting in problems that cannot be used

[0007] In addition, due to the vibration of the vehicle and the additional pressure, sand and non-slip materials are compacted, and the injection amount will decrease even if the same compressed air is supplied, so it is necessary to frequently adjust the injection amount with a needle valve.

[0008] In the existing structure, the injection amount is adjusted by changing the pressure in the sand box (container), so when several injection pipes protrude from one sand box, it is difficult to individually adjust the injection amount of each injection pipe

[0009] Moreover, when a flow regulating valve is installed between the sand box and the nozzle to adjust the injection amount, there are metal parts in contact with each other in the flow regulating valve, and if there is anti-slip material such as sand in this part, a bite phenomenon will occur and cause damage

In addition, since the inside of the sand box is now pressurized, the container must be made into a pressure-resistant structure, and it must be made into a structurally strong container.

Therefore, the manufacturing cost of the non-slip material storage container is high

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