3-外文翻译--直推式自卸车设计

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本科生毕业设计 (论文)

外文翻译

原文标题A Brief Description of Lift Truck System

译文标题自卸汽车举升系统浅谈

作者所在系别机械工程系

作者所在专业车辆工程

— 41 —

译文标题自卸汽车举升系统浅谈

原文标题 A Brief Description of Lift Truck System Design

作者高欲培译名高欲培国籍中国

原文出处自卸汽车举升系统浅谈

原文： In this paper, dump truck through a brief design analysis, in

view of the length of the larger features of heavy-duty dump truck,

lifting the system from node Structure design and hydraulic design of

the corresponding measures for the lifting of heavy truck design a

certain guiding function.

Key words： heavy-duty；lifting；system

1. The main structure of dump truck Dump truck, including the

structure of the main lift system, chassis, frame, vice,component

compartments,

2. lifting body design and analysis

Heavy-duty dump truck lifting system in the design process of

the main issues that need to be addressed include: lifting forms of

selection, in the lift car in the process of stability, before and

after the bridge, the reasonableness of axle-load distribution and

hydraulic system reliability. Chassis by following the design of 7.2

meters on concrete examples of the dump truck, dump truck lifting

mechanism on the general idea of system design.

2.1 Compartment volume to determine initial

Chassis in accordance with the parameters: Wheelbase 3900mm

+1350 mm, rear overhang 900mm, set the quality of 17500kg, and the

whole 1600mm rear overhang for the request to determine car-size

5600mm * 2300mm * 1500mm. Determine the initial car position in the

chassis for the car back out of theback-end chassis frame870mm. In

determining the form of lifting, the need for further analysis of

Count before and after the bridge and axle-load distribution of the

car to verify the location of the vehicle in the second category is

reasonable.

2.2 determine the form of lifting

Lift truck used mainly in the form of F-type, T-style, front-

straight top form. In F-type, T-style, front-straight top three

identified in the form of lifting one of the most suitable, we need

three conditions on the analysis of calibration. Lift the form of the

three has its own advantages and disadvantages of pre-straight-top

compact structure, lifting and high efficiency. Simple process with

low costs. However, after lifting the stability of poor road

conditions on the higher; F-type and T-type lifting mechanism a good

degree of cross-cutting steel, smooth lifting smooth rotation, the

fuel tank of the work piston short trip, but the lift coefficient than

the Great.

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In order to determine whether the choice of what kind of

lifting the most appropriate form, the author of three cases were done

on the theoretical analysis. If the selected F-type and T-type lifting

form, the most important of its calculated lift coefficient

comparison. By calculating the F-type forms of lifting lifting the

smallest coefficient is 1.751, T-type lifting the smallest form of

lift force coefficient is 1.799, it is not ideal (usually lift

coefficient of 1.6 to 1.7 when the effect of better). The front

straight top edge lifting the fuel tank T is greater than 8 tons of

it. Taking into account the use of F-type or T-type lifting mechanism,

very easy lifting, lifting the need for large tanks, but also to the

triangular arm, such as demanding and difficult to achieve.

Combination of the foregoing analysis, decided to adopt the prefix

form of straight Lift top.

Lifting measures to improve the stability of 2.3 Due to the

design of thelength of the larger car, at the same time, the use of

pre-straight lifting top form, so the stability of car is very

important, need to take measures to improve the process of lifting

carriage vehicle stability, prevent the occurrence of vehicle

rollover. Dump Truck car normally used to connect the design of hinge

axis and sub-frame connection, the Deputy frame through the U-bolts

and connect the main frame structure. The design we have adopted a new

structure, flat steel, through welding at the side of fixed with bolts

on the main frame, thus greatly reducing the vehicle's center of

gravity to increase stability. As the car through the hinge axis and

the hinge axis to achieve the lifting Block rotation, hinge axis

blocks now have a high degree of flat steel to replace the Vice-

trailers will need to install seat hinge axis frame in the main beam

on the wing surface below the main Frame back-end need to install a Z-

shaped beams to support Block after the hinge axis, Z-shaped beam

through the bolt assembly back-end fixed in the frame, while the two-

axis hinge as much as possible the distance between blocks to

increase to increase the car example or stability. Due to the length

of the larger car, the design would have to consider the stability of

devices used to increase vehicle stability, the stability of the

central unit installed on the inside of the location of the former

side. Car safety design in the frame around pole between the longeron,

the form of simple, safe, reliable, easy to operate. After taking into

account the lifting carriage, Block Department hinge axis force is

very large, and therefore hinge axis in the Block Office, to

strengthen measures to be adopted to increase the hinge axis of the

support seat edge.

3. Hydraulic Lift System Design

Pre-straight top-style, including the dumping of hydraulic

gearpumps,hydraulic cylinder, control valve lift, valve lift,

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摘要：

本科生毕业设计(论文)外文翻译原文标题ABriefDescriptionofLiftTruckSystem译文标题自卸汽车举升系统浅谈作者所在系别机械工程系作者所在专业车辆工程—41—译文标题自卸汽车举升系统浅谈原文标题ABriefDescriptionofLiftTruckSystemDesign作者高欲培译名高欲培国籍中国原文出处自卸汽车举升系统浅谈原文：Inthispaper,dumptruckthroughabriefdesignanalysis,inviewofthelengthofthelargerfeaturesofheavy-dutydumptruck,liftingthesy...

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