4 Ton Hydraulic Foldable Articulated Knuckle Boom Truck Mounted Lorry Crane

  Advanced development analysis means make sure design is very reliable.The structure design is more compact,lighter self-weight, greater load ratio , the whole line is reasonable, beautiful.Higher lifting capacity with four connected bar mechanism.Two folding arm can tit upward(negative elevation angle), so that the crane can enter the lower working space for lifting.The second section knuckle boom cylinder with reverse arrangement and adopt the flange connection balance value with higher reliability to reduce the leakage point. There is no oil pipe on the oil cylinder tube to reduce the possibility of damageRack cylinder adopted inclined arrangement, boom in folding state to make full use of space , compact overall structure.lower center of gravity and vehicle driving stability.The more symmetrical center design of hexagon boom make it has bigger anti-bending capacity.The float three-point bridge structure design can lower the accessional stress on the chassis frame when traveling.Qingdao Relong Technology specializes in producing truck mounted cranes and marine cranes,including design,manufacturing and sale.The factory building covers an area of 10,000-plus square meters. The top-seller products of the company are truck cranes and marine cranes with knuckle boom and telescopic boom,besides the main products above, we also provide other crane-related products like timber cranes,orange peel grab crane,auger crane,pickup crane,brick crane,basket crane,aerial work platform crane, remote control cranes, hydraulic power units and rough terrain forklifts,multiple types, various sizes of grabs for cranes and excavators.We have a first-class technical research and development team, strong technical innovation and product development capabilities, highlights the product development philosophy of "safety, pro-environment, fashion. Leading", builds the product R&D platform which is marked by a three-dimensional design system, mechanical analysis system with independent knowledge products and modular expert database. Firmly occupy the commanding height of the product technology. To lead the industry development trend, and promote the healthy and sustainable development of the industry.     /* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1