6 Fig. 6.1 shows part of a hydraulic jack used to lift the front of a car.force exerted by operator oil large small handle piston piston pivot Fig.6.1The operator pulls the handle and causes a force of 50 N to act on the small piston. A force Fis then exerted by the oil on the ...
A hydraulic circuit system for a jack comprises an inlet circuit, a return circuit and an overload protection circuit with a piston-cylinder assembly (4,10), a sequence valve (B), a safety valve (D) and a relief valve (C), the inlet circuit extending from an outer reservoir (2) via...
q Keep clear of lifted loads.q The load must be stable during lifting. An unstable load may cause the jack or load to slip.q Do not use the jack(s) if damaged, altered, or in poor condition.q Do not lift people or loads with people on them.q This hydraulic jack is for ...
For a hydraulic jack, in order to lift the large piston of a distance of 160 mm, the pumping piston must be moved up and down 400 times. If the piston area ratio is 100:1, calculate the pumping stroke. 如何将EXCEL生成题库手机刷题 如何制作自己的在线小题库 > 手机使用 分享 反馈 收藏...
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A hydraulic jack 10, Fig.1, includes a lever 18 that is pivotally supported by a pin 20 in a carriage 12 having wheels 14 and is actuated by a hydraulic motor 24 of the piston-and-cylinder type so that a platform 22 at its free end is first brought into abutment with the load 50...
A hydraulic jack assembly for a hydraulic elevator including a jack having a cylinder, cylinder head and plunger, and a footer for mounting the jack which includes a box beam having a bottom, side webs and lateral flanges. The cylinder extends through the bottom of the box beam and is fixe...
Hydraulic jack and a hydraulic circuit for such a 优质文献 相似文献 参考文献 引证文献Analysis of Hydraulic System on Portable Electrical Hydraulic Jack Hydraulic systems have been widely used in several large industries, the use of hydraulics in industrial activities help the running of related industr...
A cushioning device, for cushioning the impact between a closed end portion of a cylindrical member of a hydraulic jack and an end portion of an inner member reciprocable within the cylindrical member, including a blind bore provided in one of the end portions, an elongated plunger attached to...