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Improvements to or relating to lawn maintenance equipment

A technology for maintaining equipment and lawns, which is used in the improvement of lawn maintenance equipment and the field of spring units, which can solve problems such as reducing the efficiency of cutting height components

Active Publication Date: 2017-06-20
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The employed springs are constantly exposed to dirt and grass, which reduces the efficiency of the cutting height components

Method used

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  • Improvements to or relating to lawn maintenance equipment
  • Improvements to or relating to lawn maintenance equipment
  • Improvements to or relating to lawn maintenance equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] figure 1 Shown is a lawnmower chassis 110 equipped with a single point height of cut adjustment system that allows simultaneous adjustment of the relative height of each wheel (not shown) relative to chassis 110 using a single point mechanism . This is accomplished by using a crankshaft 300 between the two front wheels and between the two rear wheels so that rotation of the axle 300 causes the relative height of the wheels to the chassis 110 to rise or fall accordingly.

[0024] Crankshaft 300 is a shaft that includes an inner portion 310 and an outer portion 320 at each end of the crankshaft. The outer portion 320 of the crankshaft is parallel to, but not axially aligned with, the inner portion 310 of the crankshaft. The two outer portions 320 of the crankshaft 300 are aligned and parallel to each other. The inner portion 310 is partially connected to each outer portion 320 via an angled crank arm 330 . While crank arm 330 is typically at right angles to both the p...

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PUM

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Abstract

A "single-point" operation for adjusting the cutting height of the lawn maintenance equipment (100) provides a crankshaft (300) connected together via a sprung link arm (150) that engages a locking structure (145) ) to move and lock all four wheels of the mower to a predetermined position, and thus to a predetermined cutting height. The present invention provides an improved spring unit (200) for biasing against the weight of the lawn maintenance device (100) when adjusting the working height position of the lawn maintenance device (100).

Description

technical field [0001] The present invention relates to improvements to, or relating to, lawn maintenance equipment. In particular, the present invention relates to an improved spring unit for providing a biasing force against the weight of lawn maintenance equipment when adjusting the working height of the equipment. Background technique [0002] Typically, lawn maintenance equipment such as lawnmowers or scarifiers have four wheels, or two front wheels and a rear roller. To change the working height of the turf maintenance equipment, referred to herein as the "cutting height," a "single point" operation may be performed. [0003] "Single-point" operation provides the crankshafts connected together via a spring-loaded linkage arm that engages a locking structure to allow all four wheels of the lawnmower to move and lock into predetermined positions and thus to Predetermined cutting height. The user only needs to operate a single lever or other actuator to move and lock a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01D34/00
CPCA01D34/74
Inventor G·B·阿姆斯特朗
Owner ROBERT BOSCH GMBH
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