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Latticed Crane Boom Systems - Analytical Procedure

Cranes and Lifting Devices Committee
  • Ground Vehicle Standard
  • J1093_202001
  • Current
Published 2020-01-15 by SAE International in United States

This SAE information report applies to wire rope supported, latticed crane boom systems mounted on mobile construction type cranes for lift crane service.

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A Recommended Method of Analytically Determining the Competence of Hydraulic Telescopic Cantilevered Crane Booms

Cranes and Lifting Devices Committee
  • Ground Vehicle Standard
  • J1078_202001
  • Current
Published 2020-01-15 by SAE International in United States

This analysis applies to crane types as covered by ASME B30.5.

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Prediction of Friction Durability in Off-Road Applications Based on Mechanistic Understanding of the Effects of Fluids and Surfaces on Clutch Friction

Afton Chemical Corporation-Mark Devlin, Atanu Adhvaryu
Komatsu Ltd.-Shinpei Kariwa, Toshiharu Abekawa
  • Technical Paper
  • 2019-01-2339
Published 2019-12-19 by SAE International in United States
After new transmission lubricants are developed there is an extensive validation program where friction durability testing is performed on multiple clutch materials. Each durability test can run for long terms and the entire validation program can take much longer terms. A well designed lubricant and friction material will deliver the necessary friction control for construction equipment to operate at optimum level. A mechanistic construct has been evaluated to calculate friction durability in clutch systems based on fluid and surface tribological properties. Fluid properties include both boundary frictional and rheological effects. Surface properties include elastic modulus, surface roughness, asperity density and asperity tip radius. Using this mechanistic construct friction durability has been predicted. In the past, researchers in the field have often associated lubricant induced glazing of the friction material surface as the cause of the loss of friction control in clutch systems. In the current study, results show that wear is also a dominant cause of friction loss. In short clutch friction tests the rate of change in surface properties and fluid properties have been…
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Tire Size Differential - Articulated Wheel Loader

MTC8, Tire and Rim
  • Ground Vehicle Standard
  • J2204_201911
  • Current
Published 2019-11-20 by SAE International in United States
This SAE Standard applies to the usage of tires of the same nominal size and tread type, but with different outside diameter for articulated front-end loaders. Articulated four-wheel-drive front-end loader performance and component life can be affected by excessive differences in the tire outside circumference and/or diameter. The purpose is to provide specific guidelines for the usage of tires with different outside circumference and/or diameter on articulated front-end loaders.
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Off-Road Tire and Rim Selection and Application

MTC8, Tire and Rim
  • Ground Vehicle Standard
  • J1315_201911
  • Current
Published 2019-11-20 by SAE International in United States
This SAE Standard provides general guidelines for the proper selection and application of off-road tires and rims, as defined in SAE J751 and applied to earthmoving machines described in SAE J1116 and ISO 6165.
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Lattice Boom Cranes - Method of Test

Cranes and Lifting Devices Committee
  • Ground Vehicle Standard
  • J987_201911
  • Current
Published 2019-11-13 by SAE International in United States
This SAE Standard applies to mobile construction-type lifting cranes utilizing pendant-supported, conventional, and luffing jib type lattice boom crane structures.
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Design, Synthesis and Analysis of Loader Bucket, Boom and Linkages for Amphibious Infantry Combat Vehicle

Independent Researcher-Abhijit Kulkarni
Konecranes-Akhilesh Kulkarni
Published 2019-10-11 by SAE International in United States
Currently, for various military activities such as construction of bridges, digging trenches, construction of roads and clearing the area during landslides, separate unit of bulldozer for dozing operation and loader for loading operation is required. But the need is to develop a single unit which could perform both of these operations efficiently and simultaneously. The paper discusses about the development of dozer bucket mechanism as a single unit to perform dozing and loading operation and connected to the amphibious infantry combat vehicle. To develop the dozer bucket mechanism synthesis of mechanism (Linkages and Boom) has carried out and care has taken to fulfill the above stated functional requirement and satisfy the geometrical constraints. The synthesis of mechanism is done with the help of ‘CATIA’ software packages. The force calculation on various joints at the different position of mechanism has evaluated with the help of ’ADAMS’ software. The finite element analysis has done using software ’ANSYS’. The developed mechanism combines the dozing and loading operation and connected to the tracked vehicle.
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Three-Point Hitch (Type A) Backhoe Personnel Protection

OPTC1, Personnel Protection (General)
  • Ground Vehicle Standard
  • J1518_201908
  • Current
Published 2019-08-28 by SAE International in United States
This SAE Recommended Practice applies to three-point hitch (Type A) backhoes as defined in SAE J326 when mounted on either an agricultural tractor as defined in ANSI/ASAE S390 or other off-road self-propelled work machine as defined in SAE J1116. This criterion is intended for the manufacturer of the backhoe, whether or not the backhoe is manufactured or marketed by the same company that manufactures or markets the propelling machine.
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Lunar Surface Manipulation System

  • Magazine Article
  • TBMG-34912
Published 2019-08-01 by Tech Briefs Media Group in United States

NASA's Langley Research Center offers a novel lifting and precision positioning device with hybrid functional characteristics of both crane-type lifting devices and robotic manipulators. The design of the Lunar Surface Manipulation System (LSMS) allows for fine positioning with complete control over both translation and rotation of the payload. In addition, the design permits several other operations using a wide variety of special-purpose tools — such as a bucket, pallet forks, grappling devices, sensor, and visualization packages — and dexterous robotic arms that can be quickly added to the tip.

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JCB prepared to meet EU Stage V emissions

SAE Truck & Off-Highway Engineering: August 2019

Dan Gilkes
  • Magazine Article
  • 19TOFHP08_09
Published 2019-08-01 by SAE International in United States

JCB is preparing to offer Stage V compliant engines across its equipment lines, with updates to its own engine range and changes to supplier models. Group director of engines Alan Tolley said that the company has preferred to tackle emissions within the combustion system, rather than simply adding aftertreatment to the exhaust system; however, for Stage V, diesel particulate filters (DPFs) and selective catalytic reduction (SCR) will become necessary.

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