Pedal Operated Lawn Mover Cycle Download Report – Agricultural Mechanical Project

抽象的
设计目标是提出一种用于切割草的设备，该设备可移植，耐用，易于操作和维护。It also aims to design a pedal- powered Mower cycle.The pushing force required for moving the reel mower is obtained from the motion of a bicycle. The Mower cycle consists of three main wheels with two of the wheels at the front. Between the two front wheels a cutting mechanism is made with internal spur gear system which transfers the torque to the mower spiral mechanism. The cutting mechanism is made of a flat blade rigidly fixed to the frame behind the spiral arrangement which is configured to contact at least one reel bar of the spiral blades during the rotation of the spiral mechanism.

INTRODUCTION
Lawn mower is an essential tool for the maintenance of yards. They vary in size, mode of operation and power. The power source riding mowers for example are usually powered by a gasoline engine and are ridden and steered by the operator but they are costly. So ourdesign objective is to come up with a Lawn mower cycle that is durable, cost efficient & easy to operate. The Lawn mower cycle is peddle powered. The power required to push the mover is obtained from a chain-driven cycle. This project attempts to combine a cycle and a mower.

主要有两种类型的割草机

(i) the reel mowers, and

（ii）旋转割草机。

The reel (cylindrical) mowers seem to be better. Made of blades on a revolving cylinder, they achieve clean cut by scissors action. As the mower moves forward, the rotating blades come in contact with a stationary bar called the bed knife and placed parallel to the ground. Grass is held by the shearing action of the reel blades against the bed knife. The mower is adjusted to various cutting heights. Rotary mowers are often powered either by an internal combustion engine or an electric motor and are generally moved manually, with the engine only spinning the cutting blades.

关联
The main aim of our project is to come up with a cost efficient lawn mower. A lawn mower is a machine used for cutting grass or lawns. A lawn is any area of grass; mostly tough grass which is neatly cut like in a private garden or a public park. Walk behind mowers are designed to be pushed by the operator and typically run on gasoline or electricity. Modern gas powered and electric powered lawn mowers cut grass with a single blade revolving at a high speed parallel to the ground.
Generally, in areas like ours, the conventional methods of grass cutting involved the use of cutlasses which never met the maximum satisfaction. More so, it is strenuous, time and labour intensive. Therefore, there is the need to develop a low cost mower which can take care of this operation easily. The objective of the study is to design and develop a locally fabricated peddle powered spiral blade lawn mower affordable by common man

草皮中的基础知识
与大多数其他植物在一年中的一定时期生长一样。这可能会根据您所在的世界而有所不同。对于印度来说，草从4月开始生长。从那时到六月，草的季节很高，这意味着它的生长迅速而强壮。在此期间，您可以每周切草1-2次。您应该想到的是，在增长期开始时要轻松放松草。然后，草进入一个低增长速度的时期，主要是由于阳光使土壤干燥。如果草看起来干燥（变黄），您应该注意不要将草切成短。一个好的规则是一次切割草长的三分之一。草可能非常敏感，如果您一次切太多，可能会损坏。 Then we come to the length. Here it really depends on what kind o a lawn you‘re aiming for. If you want a lawn that you can walk on you should leave at least 4cm of the grass.There are different approaches to cutting the grass all with advantages and disadvantages.

卷轴（气缸）割草机
卷轴（圆柱形）割草机由旋转圆柱体上的叶片制成，它们通过剪刀作用进行清洁。当割草机向前移动时，旋转的叶片与称为床刀的固定杆接触，并平行于地面。草是由卷轴刀片靠在床刀上的剪切动作来持有的。

The mower is adjusted to various cutting heights.

Typically, the cutting reels are ahead of the vehicle’s main wheels, so that the grass can be cut before the wheels push the grass over onto the ground. The reels are often hydraulically powered.

气缸或卷轴割草机的主要部分是：
1.刀片卷轴/气缸 -consist of numerous (3 to 7) spiral blades that are attached to a rotating shaft. The blades rotate, creating a scissor-like cutting motion.
2.床刀 -一个圆柱体的固定切削机理/reel mower. This is a fixed horizontal blade that is mounted to the frame of the mower.
3.身体框架 -割草机安装其他部位的割草机的主要结构框架。
4. Wheels —这些有助于推动割草机的行动。通常，卷轴割草机有两个轮子。
5. Push handle —the “power source” of a manually operated reel mower. This is a sturdy T-shape handle that is connected to the frame, wheels and blade chamber.
6.电动机 -the power source of a reel mower that is powered by gasoline or electric.

影响剪辑的因素
1. The diameter of the reel
2.卷轴的数量
3.卷轴的速度
4.地面速度
通过遵循刀片路径穿过两条clips，随着机器向前移动，我们可以说明切割草的实际过程。床刀将草推向剪切点，而卷轴刀片则将其聚集在前面。每个刀片路径都有一半的夹子，可以切割所有剪辑the grass.

割草机周期的工作原理
切割机构是由固定在螺旋形布置后面的框架上的扁平刀片制成的，该刀片在螺旋形旋转期间配置为至少接触一个螺旋叶片的卷轴条。

To understand reel cutting theory, we must understand the concept of clip and the shear point. A shear point is any single point of contact made between the reel blade and bedknife. Clip is the forward distance traveled between successive blade contacts at one shear point.The bedknife pushes grass toward the shear point while the reel blade gathers it in front. Each blade path has one-half clip in which to cut all the grass. The pushing force required to move the reel mower is given by the motion of bicycle.

应用
割草机周期是用于在所需高度上切草的机器。

优点
1.低成本
2. They are less dangerous than rotary mowers.
3.几乎不需要维护。
4.环保。
5.几乎没有噪音。
6. Are easy to transport and store.
7.不要搅拌灰尘或发出有害的烟雾。
8.不要在院子周围填充碎屑。