Sweeper capable of automatically adjusting height of sweeping brush

Abstract

The invention discloses a sweeper capable of automatically adjusting height of a sweeping brush. The sweeper comprises a frame, a battery pack, a sweeping brush motor with a sweeping brush, an air extractor, a garbage collection box, a filtering dust collection box provided with a dust collection filter element, a reciprocating driving device, a central control unit and a current sensor, wherein the sweeping brush is connected with the frame through a lifting device; a fixing part of the reciprocating driving device is connected with the frame; a reciprocating part of the reciprocating driving device is connected with the lifting device for fixing the sweeping brush motor; a signal induction device of the current sensor is connected with a power supply circuit of the sweeping brush motor; a signal output end of the current sensor is connected with the central control unit; the central control unit is connected with a reciprocating driving control module of the reciprocating driving device; the central control unit analyzes current input from the signal output end of the current sensor; and the reciprocating driving control module drives the reciprocating part to make corresponding pull-and-push action according to the analysis result so as to adjust the lifting device to move up and down.

Description

technical field [0001] The invention relates to a ground cleaning device, in particular to a floor sweeper capable of automatically adjusting the height of the sweeping brush according to road conditions. Background technique [0002] A sweeper is a device that sets a rotating sweeping brush on a controllable and movable frame to clean the ground. Taking the sweeper that is widely used in the market as an example, three sweeping brushes are usually installed on the frame: front There are two side brushes whose rotation axis is perpendicular to the ground and a main brush whose rotation axis is parallel to the ground in the middle. On the device, the sweeping brush can be lifted and lowered by adjusting the lifting height of the lifting device, and the cleaning operation can be performed by adjusting the lifting device to lower the sweeping brush to contact with the ground. Since the sweeping machine usually works in various occasions, the friction coefficient of the ground i...

AI Technical Summary

Problems solved by technology

[0002] A sweeper is a device that sets a rotating sweeping brush on a controllable and movable frame to clean the ground. Taking the sweeper that is widely used in the market as an example, three sweeping brushes are usually installed on the frame: front There are two side brushes whose rotation axis is perpendicular to the ground and a main brush whose rotation axis is parallel to the ground in the middle. On the device, the sweeping brush can be lifted and lowered by adjusting the lifting height of the lifting device, and the cleaning operation can be performed by adjusting the lifting device to lower the sweeping brush to contact with the ground. Since the sweeping machine usually works in various occasions, the friction coefficient of the ground is often different. If the friction coefficient or the road surface is uneven, the relative pressure and relative friction between the sweeping brush and the ground will change. If the friction is too small, the cleaning will not be clean. If the friction is too large, the motor power will be too high. It not only consumes energy, but also shortens the life of the motor and the brush, especially the rapid wear of the brush, which doubles the cost of use. In addition, when the pressure is too high, it will cause secondary dust, which is not conducive to the thorough cleaning of the ground. Therefore, the sweeping brush should be kept within a certain range of friction with the ground, and the pressure between the sweeping brush and the ground is determined by the preset lowering height of the lifting device. It is necessary to operate at the height of the machine, and it must be operated under the shutdown condition, which not only reduces the work efficiency, but also because the frictional resistance between the sweeping brush and the road surface cannot be accurately measured, so the adjustment is difficult and the applicability is poor. In addition, the sweeping brush will continue to wear during the working process. , in order to achieve a satisfactory cleaning effect, it is necessary to constantly adjust the angle of the hinge rod to reduce the working height of the sweeping brush. When the bottom brush is worn to the extent of being scrapped, a new sweeping brush needs to be replaced. Re-adjust the height between the sweeping brush and the ground. If the pressure is too small, it is difficult to achieve the best use effect. If the pressure is too high, it will also increase the wear of the sweeping brush, which will cause secondary dust to affect the cleaning effect, resulting in cumbersome operation and need to operate Those who have high operating skills and experience will increase the cost of users and hinder the promotion and application of sweepers in a wider range.

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