Follow-up lawn mower head drive

Abstract

The invention discloses a mowing table transmission device of a pedestrian-controlled lawn mower. The mowing table transmission device comprises a flat belt, an engine belt pulley, two cutter belt pulleys and a tensioning wheel mechanism, wherein a mechanism for preventing the flat belt from falling out of grooves is arranged on the outer side of the flat belt between the engine belt pulley and the other cutter belt pulley, and belt blocking hoods are respectively arranged on the outer sides of the two cutter belt pulleys; the upper and lower sides of the flat belt are located between the upper and lower horizontal rods of a belt support rack; the groove width of the engine belt pulley is larger than the width of the flat belt. The mowing table transmission device has the advantages that the device is simple in structure, low in cost and high in use efficiency; when the terrain clearance of a mowing table is adjusted, the flat belt can move vertically to adapt to the height change of the mowing table, and the service life of the flat belt is prolonged; the mechanism for preventing the flat belt from falling out of the grooves uses the belt support rack to prevent the flat belt from falling out of the grooves and can drive the flat belt to move up and down so as to adjust the terrain clearance of the mowing table.

Description

technical field [0001] The invention relates to a double-knife transmission device of a lawn mower, in particular to a double-cutter transmission device of a lawn mower capable of moving a flat belt up and down in a wheel groove of an engine pulley, and belongs to the technical field of garden machinery. Background technique [0002] When the lawn mower is working, the operator needs to adjust the ground height of the lawn mower mower according to the lawn conditions. Since the engine of the lawn mower is fixed on the frame, the height of the engine pulley cannot be adjusted with the height of the mower. The power transmission from the engine to the cutter of the existing commercial follow-up lawn mower is realized through the V-shaped transmission belt. After adjusting the height of the header from the ground, due to the height difference between the engine pulley and the two cutter pulleys, The V-shaped transmission belt cannot be driven in the same horizontal plane, and c...

AI Technical Summary

Problems solved by technology

[0002] When the lawn mower is working, the operator needs to adjust the height of the cutting platform of the lawn mower according to the lawn conditions. Since the engine of the lawn mower is fixed on the frame, the height of the engine pulley cannot be adjusted according to the height of the cutting platform.

The power transmission from the engine of the existing commercial walk-in lawn mower to the cutter is realized through the V-shaped transmission belt. After adjusting the height of the header from the ground, due to the height difference between the engine pulley and the two cutter pulleys, The V-shaped transmission belt cannot be driven in the same horizontal plane, and can only be used for inclined transmission, resulting in a large inclination angle of the V-shaped transmission belt, which seriously affects the life of the V-shaped transmission belt. High-quality V-shaped transmission belts must be used. Even so, the V-shaped transmission belt It will be damaged and fail soon, affecting the working efficiency of the lawn mower

Either the cutter pulley and the support shaft adopt a spline structure, and the center hole of the cutter pulley adopts a spline hole structure, so that the cutter pulley can float up and down with the cutting height, thereby eliminating the relative height of the engine pulley and the two cutter pulleys Poor, but its structure is complicated, the quality of parts and assembly quality are difficult to control, which increases the manufacturing cost and maintenance cost of the lawn mower

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