A shifting and sliding mechanism for a carbonless trolley up and downhill

Abstract

The invention discloses a shifting and gliding mechanism for a carbonless trolley up and downhill, which includes a power transmission assembly and an electric control assembly; the power transmission assembly includes a rear driving wheel half shaft, a rear driven wheel half shaft and a tapered bush The winding shaft and the rear driving wheel semi-shaft are connected with an axially movable inner and outer spline sleeve through a spline, and the sleeve and the winding shaft are connected by two pairs of constant mesh gears; the electric control component includes a single-chip microcomputer and is electrically connected to the single-chip microcomputer Infrared pair tube, wheel speed sensor and two DC electromagnets that can shift the constant mesh gear; when going up and downhill, the single-chip microcomputer sends different commands to control different DC gears according to the electrical signals sent by the infrared pair tube and grating wheel speed sensor The power on and off of the type electromagnet makes the power transmission route switch between two pairs of constant mesh gear pairs, and completes the gear conversion between the flat road and the ramp. The invention has the advantages of being able to carry out intelligent detection, accurately changing the driving force, saving gravitational potential energy and making the traveling speed of the trolley uniform, and the like.

Description

technical field [0001] The invention relates to a carbon-free trolley, in particular to a shifting and sliding mechanism for a carbon-free trolley up and downhill. Background technique [0002] Designing and making carbon-free trolleys has gradually become a regional and even national mechanical design competition. like figure 1 As shown in the figure, the carbon-free trolley is a self-propelled trolley driven by gravitational potential energy with a direction control function; the trolley is a three-wheel structure with a steering control mechanism, and the steering control mechanism has an adjustable function or can be quickly replaced. Competition venues with obstacles of different distances; the energy to drive the car to walk and turn can only be converted from the given gravitational potential energy, and no other energy sources can be used. Given a gravitational potential energy of 4 joules (take g = 10m / s 2 ), the weights (Φ50*65mm, ordinary carbon steel) with a m...

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Problems solved by technology

This method is relatively mechanical. It is necessary to measure the starting point of the track and the position of the ramp in advance, and then to wind the line. The human error is relatively large; and the error of the winding position is too large. It has not been changed, the phenomenon that the trolley stops on the ramp; and during the whole process of going up and down, the weight is falling, which increases the loss of energy; finally, if the winding position is uneven, the center of gravity of the trolley will be uneven during driving. Stability, reduce the movement accuracy of the trolley

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