It is an object of the invention to provide improved elements and arrangements thereof for the pu去深打理张京后都起时关二科比据rposes described which is inexpensive, dependable and fully effective in accomplishing 中空液压扳手 its intended purposes. 液压扭矩扳手系统技术英文文献和翻译:
It is another object of the invention to provide a hydraulic torque wrench having a hydraulic cylinder drive unit having a housing that is mountable at 液压扳手 selected angles of rotation relative to the housing of a ratchet unit driven thereby.
SUMMARY OF THE INVENTION
The present invention is a hydraulic torque wrench system having a separate ratchet unit 液压力矩扳手 and hydraulic cylinder drive unit which are connectable by a overlapping cylindrical chuck-like connection at selected angles of rotation so as to provide flexibility in clearance for use and to avoid 液压扭矩扳手 twisting of hydraulic tubing. The hydraulic cylinder actuates the ratchet mechanism by means of a connecting rod traveling through the overlapping cylindrical connection and engaging a pivotable drive 驱动液压扳手 plate. The ratchet may have a male drive shaft for driving or connection with a socket, or a female driver such a hex or spline wrench. The ratchet unit case may be integral with an access cover 德国液压扳手 plate, or split for removable accesses to the ratchet mechanisms. The hydraulic connections to the cylinder unit housing may be separate rotatable connections or a single connection and collar with 中空液压扳手 rotatable hydraulic fittings allowing three-way rotation.Separate attachments are provided for use with the hydraulicunit, taking the place of the ratchet unit. These attachments include a flange spreader 进口液压扳手 for separating pipe flanges, a nut splitter, scissor action shears, and a lift/spreader for lifting a corner of an object from a llat surface or spreading surfaces apart. A reaction bar is provided 液压扳手价格 which may be affixed around the hydraulic cylinder unit housing which extends downward to bear against a pipe flange circumferential surface when torqueing a nut with the inventive hydraulic torque 液压扳手租赁 wrench. A similar reaction boot fits around the housing and against an adjacent flange nut.
2. Description of the Related Art
Still another object of the invention is to provide a power shears attachment 液压扳手 having a connector for use with the hydraulic torque drive unit of the present invention.
It is a further object of the invention to provide a flange spreader attachment having a connector for 驱动液压扳手 use with the hydraulic torque drive unit of the present invention.
The present invention relates to power tools. More particularly, the present invention relates to a hydraulic cylinder actuated tool 液压扳手价格 system having a single hydraulic cylinder actuator and replaceable tools including torque Wrenches, shears, nut breakers, and flange spreaders.
Accordingly, it is a principal object of the invention 德国液压扳手 to provide a hydraulic torque wrench that is adjustable to allow ease of use in restricted clearance areas.
Yet another object of the invention is to provide a nut cracker attachment having a 液压扭矩扳手 connector for use with the hydraulic torque drive unit of the present invention.
Still another object of the invention is to provide a spreader and lift attachment having a connector for use with the 进口液压扳手 hydraulic torque drive unit of the present invention.
The use of hydraulically operated torque wrenches is well known, particularly in the tightening large nuts on bolts or studs and in tight clearance 液压力矩扳手 installations not allowing for the travel of a long wrench handle. Present hydraulically oper- ated torque wrenches are not rotatably adjustable relative to the hydraulic driving cylinder, and are 液压扳手租赁 thus restrained from rotation by the hydraulic hoses and other appendages. It would be desirable to provide a hydraulically operated torque wrench that is rotatable relative to the actuating hydraulic 中空液压扳手 driving cylinder and hose. It would further be desirable to provide a system wherein the torque wrench is removable from the hydraulic driving cylinder and other torque wrenches having different drives 液压扳手 or sizes as well as other tools such as shears, nut breakers, and flange spreaders may be attached for driving by the same hydraulic cylinder.