Locomotive sand-spraying system test bench and circulating sand-spraying method thereof

Abstract

The invention discloses a locomotive sand-spraying system test bench. A sand box is disposed on a support, and the bottom of the sand box is provided with a sand spraying device. A sand outlet of the sand spraying device is connected with a sand outgoing pipe, and the other end of the sand outgoing pipe is aligned with a sand collection box. The bottom of the sand collection box is provided with a special sand valve, and a sand outlet of the special sand valve is connected with a sand returning pipe, wherein the other end of the sand returning pipe is connected with the sand box. The invention also discloses a circulating sand-spraying method for the test bench, and the method comprises the steps that an air flow of a wind source passes through an oil-water separator, a cutout cock and a sand-spraying solenoid valve and then is divided into two ways: one way enters a pressure regulating valve for pressure regulation and then enters into the sand spraying device, and the sand in the sand spraying device flows out through the sand outgoing pipe and then enters into the sand collection box with the special sand valve; and the other way is connected with the special sand valve, and enables the sand in the sand collection box to overcome the gravity and then to be blown back to the sand box through the sand returning pipe, thereby achieving the circulating spraying of sand. The test bench and the method do not need additional power to achieve the automatic adding of sand, and can carry out the circulating sand spraying test.

Description

technical field [0001] The invention relates to a locomotive sand spreading system test bench and a method for circulating sand spreading thereof. Background technique [0002] The locomotive sand spreading device is to blow the sand in the sand device by compressed air, let the sand flow down through the guide pipe, and fall on the rail under the wheel, so as to increase the friction and prevent the wheelset from slipping. The sand spreading system of a locomotive is an important part of the locomotive and plays a vital role in the safe operation of the locomotive. There are also various problems in the sand spreading system, such as: the sand spreader is blocked and the sand is not smooth; The above problems are related to factors such as locomotive sand spreader, control mode of sand spreader system, and air inlet pressure. Therefore, in the locomotive design process, it is necessary to verify the rationality of the sand-sprinkling system design on the sand-sprinkling t...

AI Technical Summary

Problems solved by technology

[0003] At present, the circular sanding of the railway locomotive sanding test bench is mostly done manually, and some are automatically added by the motor driving the conveyor belt. These methods are time-consuming, labor-intensive, complex in structure and high in cost.

Moreover, the existing test bench can only carry out sanding test for one kind of sand box and one kind of sanding device.

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