Grain sampler

Abstract

The invention relates to a grain sampler. The grain sampler comprises a first guided conveying unit and a second guided conveying unit which are arranged on a moving frame, wherein a clamping port for clamping a sampling tube is formed by an area between the first guided conveying unit and the second guided conveying unit; each of the first guided conveying unit and the second guided conveying unit comprises a rotary shaft extending out of the moving frame; driving wheels are arranged on the rotary shafts; a transmission chain is arranged on the two driving wheels and further connected with a motor; a tension wheel is arranged on the moving frame and cooperates with the transmission chain; a detection wheel is further arranged between the tension wheel and the motor, in propped fit with the back side of the transmission chain and arranged on a stretching and retracting support; the stretching and retracting support is arranged on the moving frame and is in a horizontal stretching and retracting direction; a proximity switch is arranged on the stretching and retracting path of the stretching and retracting support and used for controlling power-on and power-off of the motor. The proximity switch enables power-off of the motor, so that the phenomenon of scrapping due to bending of the sampling tube or the phenomenon of overheated burning of the motor due to rotation failure is avoided, and a driving mechanism and the sampling tube are protected.

Description

technical field [0001] The invention relates to the technical field of grain testing equipment, in particular to a grain sampling machine. Background technique [0002] When the grain purchase station purchases foreign grain, in order to ensure the quality of the grain, it is necessary to sample the grain in the truck compartment before the grain is put into storage. Specifically, the dust content and water content of the grain can be obtained to know the quality of the grain. This is also a must-do test for grain purchase stations before purchasing grain. [0003] Grain samplers are also used in existing grain purchase stations. Most of the existing grain samplers are hand-held structures. to complete the sampling operation of the grain in the truck. The hand-held sampler in the prior art sometimes cannot be inserted into the deep position of the truck compartment for sampling, resulting in deviations in sampling detection, and when the hand-held sampler samples , the ope...

AI Technical Summary

Problems solved by technology

[0003] Grain samplers are also used in existing grain purchase stations. Most of the existing grain samplers are hand-held structures. to complete the sampling operation of the grain in the truck. The hand-held sampler in the prior art sometimes cannot be inserted into the deep position of the truck compartment for sampling, resulting in deviations in sampling detection, and when the hand-held sampler samples , the operator needs to climb up and down, and the sampling operation is extremely inconvenient

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