CN201982555U - Few-leaf spring for heavy-duty engineering vehicle - Google Patents

Abstract

The utility model relates to a few-leaf spring for a heavy-duty engineering vehicle, which is formed in the way that a plurality of reeds are stacked together and fixed through a bolt in the middle, the uppermost reed is in a pressure-tank structure, and both ends of each reed below are respectively provided with a rib-pressing tank, so that the tank on each reed is contacted and embedded with the reed above to ensure that all the reeds together exert actions without being dislocated; and a middle gasket is arranged between every two reeds, and the end part is not provided with the middle gasket, so that the replacement of the abraded gasket can be avoided, meanwhile, the stress concentration is reduced, and sudden accidents caused by stress cracking are reduced. The few-leaf spring for the heavy-duty engineering vehicle has the advantages of simple structure, convenience in processing, easiness in assembly, long service life and high safety performance, and the accidents can be effectively reduced.

Description

The few sheet spring of heavy engineering car

Technical field

The utility model relates to the heavy engineering car, is specially a kind of elastic element that is used for the long automobile suspension system of lightweight, life-span on the heavy engineering car.

Background technique

Along with the heavy truck of each brand is being arranged several kilometers the queue phenomenon of refueling of limiting the quantity of and is being occurred often, the shade of energy crisis and oil price soaring gradually as if always all not too remote from us.Meanwhile, the carbon dioxide of global warming and acid rain and motor vehicle emission, sulphide and nitrogen oxide have much relations.In the prerequisite that satisfies weight metering charging, state's III discharging, and under the overload managing environment of reply increasingly stringent, heavy card user is more and more higher to the cry of vehicle light dead-weight, the high speed of a motor vehicle, low oil consumption, high reliability.

Few Leaf Spring generally is used for light-duty vehicle and large and medium-sized passenger vehicle, because the surface requirements of Few Leaf Spring is higher, does not generally allow breach or the hole that easy generation stress is concentrated; And in order to reduce the friction between sheet and the sheet, the general way that adopts at middle and end shimming of Few Leaf Spring, yet the in use necessary pad that upgrades wearing and tearing.The heavy engineering car is then easily accelerated the wearing and tearing of pad because the load that is carried is bigger, upgrades as need, then causes the inconvenience of operation.

The model utility content

The technical problem that the utility model solved is to provide a kind of heavy engineering car few sheet spring, to solve the shortcoming in the above-mentioned background technology.

The technical problem that the utility model solved realizes by the following technical solutions:

The few sheet spring of heavy engineering car is to be stacked together by some reeds, and the centre is formed by a bolt.Wherein, topmost a slice is the indent structure, and the two ends of other each sheet reed are the rib-pressing groove structure, makes the groove on the reed just can be chimeric with top a slice, guarantees that each reed plays a role together jointly and can wrong sheet.

Described reed is that the end is provided with behind the rib-pressing groove bent into shape again, makes the leaf end contact, thereby reduces concentrating of stress, reduces the burst accident that is caused by stress cracking.

Be provided with intermediate washer between each reed of the few sheet spring of described heavy engineering car, and the end does not have, the replacing of the pad of can avoiding wearing and tearing reduces concentrating of stress simultaneously.

Thereby described each reed adopts rolling processing to reach with the weight that reduces leaf spring and reduces cost.

The few leaf spring material of described heavy engineering car is the high 51CrV4 steel of hardenability, can improve intensity, toughness and the fatigue strength of described few sheet spring, improves working life, the generation of minimizing accident.

Beneficial effect

The utility model is simple in structure, and is easy to process, and assembling is easy, long service life, Safety performance height, the generation of effectively minimizing accident.

Description of drawings

Fig. 1 is the structural representation of the utility model preferred embodiment.

Embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.

The few sheet spring of heavy engineering car referring to Fig. 1 comprises reed 1, centre bolt 2, intermediate washer 3.Wherein, reed 1 is stacked together, and is middle fixing by centre bolt 2, is provided with intermediate washer 3 between each reed 1 in the intermediate portion.

The top a slice of described reed 1 is the indent structure, below the two ends of each sheet reed be the rib-pressing groove structure, make the groove on the reed just can be chimeric with top a slice, guarantee that each reed plays a role together jointly and can wrong sheet.

More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof

Claims (1)

1. the heavy engineering car lacks the sheet spring, be to be stacked together by some reeds, the centre is formed by a bolt, it is characterized in that, the top a slice of described reed is the indent structure, below the two ends of each reed be provided with rib-pressing groove, it is chimeric that groove on the reed is contacted with top a slice reed, is provided with intermediate washer in the neutral position between described each reed.

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