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Front Axle Assembly
Turning radius was a longstanding problem with wagons, dictated by the distance between the front wagon wheels and the bed of the wagon—namely, the point where the rotating wheels collide with the side of the wagon when turning. Many earlier designs required a very large turning radius; however, shrinking the width of the bed means decreasing the size of the load. As this is a problem that carts (by virtue of their two-wheeled nature) do not face, this factor, combined with their lighter weight, meant that carts were long preferred over wagons for many uses. The general solutions to this problem involved several modifications to the front-axle assembly. The front axle assembly of a wagon consists of an axle, a pair of wheels and a round plate with a kingpin in its centre that sits halfway between the wheels, which may be mounted on spindles. A round plate with a hole in its centre is located on the underside of the wagon. The plate on the wagon, in turn, sits on the plate on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turning Radius
The turning radius (alternatively, turning diameter or turning circle) of a vehicle defines the minimum dimension (typically the radius or diameter) of available space required for that vehicle to make a semi-circular U-turn without skidding. The Oxford English Dictionary describes turning circle as "the smallest circle within which a ship, motor vehicle, etc., can be turned round completely". The term thus refers to a theoretical minimal circle in which for example an aeroplane, a ground vehicle or a watercraft can be turned around. The terms (''radius'', ''diameter'', or ''circle'') can have different meanings; refer to the section. Definition On wheeled vehicles with the common type of front wheel steering (i.e. one, two or even four wheels at the front capable of steering), the vehicle's ''turning diameter'' measures the minimum space needed to turn the vehicle around while the steering is set to its maximum displacement from the central 'straight ahead' position - i.e. ei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wagon
A wagon (or waggon) is a heavy four-wheeled vehicle pulled by Working animal#Draft animals, draft animals or on occasion by humans, used for transporting goods, commodities, agricultural materials, supplies and sometimes people. Wagons are immediately distinguished from carts (which have two wheels) and from lighter four-wheeled vehicles primarily for carrying people, such as carriages. Common animals which pull wagons are horses, mules, and oxen. One animal or several, often in pairs or teams may pull wagons. However, there are examples of human-propelled wagons, such as Corf (mining), mining corfs. A wagon was formerly called a wain and one who builds or repairs wagons is a Wainwright (occupation), wainwright. More specifically, a wain is a type of horse- or oxen-drawn, load-carrying vehicle, used for agricultural purposes rather than transporting people. A wagon or cart, usually four-wheeled; for example, a haywain, normally has four wheels, but the term has now acquired s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wheelwright
A wheelwright is a Artisan, craftsman who builds or repairs wooden wheels. The word is the combination of "wheel" and the word "wright" (which comes from the Old English word "''wryhta''", meaning a worker - as also in shipbuilding, shipwright and arkwright). This occupational name became the English surname ''Wright'', and also appears in surnames like ''Cartwright'' and ''Wainwright''. These tradesmen made wheels for carts (cartwheels), wagons (wains), traps and coaches. They also made the wheels, and often the frames, for spinning wheels, and the belt drives of steam powered machinery. First constructing the hub (called the nave), the spokes and the rim segments called felloes, and assembling them all into a unit working from the center of the wheel outwards. Most wheels were made from wood, but other materials have been used, such as bone and horn (anatomy), horn, for decorative or other purposes. Some earlier construction for wheels such as those used in early chariots wer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rees's Cyclopædia
Rees's ''Cyclopædia'', in full ''The Cyclopædia; or, Universal Dictionary of Arts, Sciences, and Literature'', was an important 19th-century British people, British encyclopaedia edited by Rev. Abraham Rees (1743–1825), a Presbyterian minister and scholar who had edited previous editions of ''Chambers's Cyclopaedia, Chambers's Cyclopædia''. Background When Rees was planning his ''Cyclopædia'', Europe was in the aftermath of the French Revolution, and during serialised publication (1802–1820) the Napoleonic Wars and War of 1812 occurred. Britain absorbed into its British Empire, empire a number of the former French and Dutch colonies around the world; Romanticism came to the fore; evangelical Christianity flourished with the efforts of William Wilberforce; and Industrial Revolution, factory manufacture burgeoned. With this background, philosophical radicalism was suspect in Britain, and aspects of the ''Cyclopædia'' were thought to be distinctly subversive and attract ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carts
A cart or dray (Australia and New Zealand) is a vehicle designed for transport, using two wheels and normally pulled by draught animals such as horses, donkeys, mules and oxen, or even smaller animals such as goats or large dogs. A handcart is pulled or pushed by one or more people. Over time, the word "cart" has expanded to mean nearly any small conveyance, including shopping carts, golf carts, go-karts, and UTVs, without regard to number of wheels, load carried, or means of propulsion. History The history of the cart is closely tied to the history of the wheel. Carts have been mentioned in literature as far back as the second millennium B.C. The first people to use the cart may have been Mesopotamians. Handcarts pushed by humans have been used around the world. Carts were often used for judicial punishments, both to transport the condemned – a public humiliation in itself (in Ancient Rome defeated leaders were often carried in the victorious general's triumph) – a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Axle
An axle or axletree is a central shaft for a rotation, rotating wheel and axle, wheel or gear. On wheeled vehicles, the axle may be fixed to the wheels, rotating with them, or fixed to the vehicle, with the wheels rotating around the axle. In the former case, bearing (mechanical), bearings or Bushing (bearing), bushings are provided at the mounting points where the axle is supported. In the latter case, a bearing or bushing sits inside a central hole in the wheel to allow the wheel or gear to rotate around the axle. Sometimes, especially on bicycles, the latter type of axle is referred to as a ''spindle (tool), spindle''. Terminology On cars and trucks, several senses of the word ''axle'' occur in casual usage, referring to the shaft itself, its housing, or simply any transverse pair of wheels. Strictly speaking, a shaft that rotates with the wheel, being either Bolt (fastener), bolted or rotating spline, splined in fixed relation to it, is called an ''axle'' or ''axle shaft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wheel
A wheel is a rotating component (typically circular in shape) that is intended to turn on an axle Bearing (mechanical), bearing. The wheel is one of the key components of the wheel and axle which is one of the Simple machine, six simple machines. Wheels, in conjunction with axles, allow heavy objects to be moved easily facilitating movement or transportation while supporting a load, or performing labor in machines. Wheels are also used for other purposes, such as a ship's wheel, steering wheel, potter's wheel, and flywheel. Common examples can be found in transport applications. A wheel reduces friction by facilitating motion by rolling together with the use of axles. In order for a wheel to rotate, a Moment (physics), moment must be applied to the wheel about its axis, either by gravity or by the application of another external force or torque. Terminology The English word '':wikt:wheel, wheel'' comes from the Old English word , from Proto-Germanic language, Proto-Germanic , ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kingpin (automotive Part)
The kingpin (also king-pin, king pin and k pin) is the main wiktionary:pivot, pivot in the steering mechanism of a automobile, car or other vehicle. The term is also used to refer to part of a fifth wheel coupling apparatus for a Semi truck, semi and its Trailer (vehicle), trailer or other load. History Originally, with the 'turntable' steering of horse-drawn wagons, this was a single pin on which the moveable axle was pivoted beneath the wagon's frame. This located the axle from side to side, but the weight of the wagon was carried on a circular wooden ring turntable surrounding this. Similar centre pivot steering was used by steam traction engines, the kingpin being mounted on the 'perch bracket' beneath the boiler. Some early cars also used centre pivot steering, although it became apparent that it was unsuitable for their increasing speeds. Ackermann steering separates the steering movement into two pivots, one near the hub of each front wheel. The beam axle between them re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spindle (automobile)
In an automobile, the wheel spindle, sometimes called simply the spindle, is the part of the suspension system that carries the hub for the wheel and attaches to the upper and lower control arms. Spindles are carried by steering knuckles or "uprights". Although the terms "steering knuckle" and "upright" are sometimes used interchangeably with "spindle", they all refer to different parts. Design There are several considerations when designing a spindle. Loads and forces need to be considered. Tolerance to vertical and horizontal forces greater than those due to 5 times the acceleration of gravity, approximately 50 meters per second squared, are sometimes considered desirable. Non-driven wheel The main forces on a non-driven wheel are braking and turning forces. Driven wheel The main forces on a driven wheel include forward and reverse propulsion in addition to braking and turning forces. See also * Front axle assembly * List of auto parts This is a list of auto parts, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horse Harness
A horse harness is a device that connects a horse to a horse-drawn vehicle or another type of load to pull. There are two main designs of horse harness: (1) the Breastplate (tack)#Harness, breast collar or breaststrap, and (2) the Horse collar, full collar or collar-and-hames. For pulling heavy loads, a full collar is required because it distributes pressure over a larger area of the horse. An ill-fitting full collar can cause chafing on the horse's skin and can interfere with its breathing, as can a breast collar that is positioned too high. Putting harness on a horse is called ''harnessing'' or ''harnessing up''. Attaching the harness to the vehicle or load is called ''putting to'' in the British Isles, or ''hitching'' in North America. The order of putting on harness components varies by discipline, but when a horse collar is used, it is usually put on first. Harness components designed for other animals (such as the yoke used with oxen) are not suitable for horses and will ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ackermann Steering Geometry
The Ackermann steering geometry (also called Ackermann's steering trapezium) is a geometric arrangement of linkages in the steering of a car or other vehicle A vehicle () is a machine designed for self-propulsion, usually to transport people, cargo, or both. The term "vehicle" typically refers to land vehicles such as human-powered land vehicle, human-powered vehicles (e.g. bicycles, tricycles, velo ... designed to solve the problem of wheels on the inside and outside of a turn needing to trace out circles of different radii. It was invented by the German carriage builder Georg Lankensperger in Munich in 1816, then patented by his agent in England, Rudolph Ackermann (1764–1834) in 1818 for horse-drawn carriages. Erasmus Darwin may have a prior claim as the inventor dating from 1758. He devised his steering system because he was injured when a carriage tipped over. Advantages The intention of Ackermann geometry is to avoid the need for tyres to slip sideways when foll ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beam Axle
A beam axle, rigid axle, or solid axle is a suspension (vehicle), dependent suspension design in which a set of wheels is connected laterally by a single beam or shaft. Beam axles were once commonly used at the rear wheels of a vehicle, but historically, they have also been used as front axles. In most automobiles, beam axles have been replaced with front (IFS) and rear independent suspensions (IRS). Implementation With a beam axle, the camber angle between the wheels is the same regardless of its location in the travel of the suspension. A beam axle's location in the fore and aft directions is constrained by one of several suspension components, including Trailing-arm suspension, trailing arms, semi-trailing arms, radius rods, and leaf springs. The lateral location can be constrained by a Panhard rod, a Scott Russell linkage, a Watt's linkage, or some other arrangement, most commonly by the leaf springs. Shock absorbers and either leaf springs, coil springs, or air suspension, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
