Weak foot puller

Abstract

The invention discloses a weak foot puller, and belongs to a mechanical product. The weak foot puller aims to solve the problem that the puller cannot pull special-shaped objects such as thickened belt disc propellers and bearings at the far ends of lengthened shafts. The weak foot puller is technically characterized in that an existing puller is redesigned; pulling claws of the puller are made of magnetized finish forging steel; the pulling claws are fixed to a pulled object through magnetic force of the pulling claws; and a hole is designed in each pulling claw to be connected with a corresponding iron chain. The criterion of the size of a force bearing shoulder on a lead screw is that the iron chains can be arranged on the force bearing shoulder in a sleeving manner. A groove is designed in the force bearing shoulder and used for hooking each iron chain. A spring piece is pressed on the force bearing shoulder through a clamp spring. The spring piece is used for pressing the iron chains hooked in the grooves of the force bearing shoulder so that the iron chains cannot slide off. If the stretching length of the pulling claws needs to be increased or decreased, the number of joints of the iron chains arranged on force bearing ribs in a sleeving manner can be adjusted. If an object, exceeding the stretching range of the pulling claws, on a lengthened shaft or a thickened belt disc is pulled, the weak foot puller can be connected with an iron chain of the same specification through a shackle, pulling can be achieved, and use is quite convenient. Labor intensity is further reduced, and labor efficiency is improved.

Description

technical field [0001] The invention belongs to a mechanical product, in particular to a soft foot puller. Background technique [0002] Existing pullers include two-jaw pullers and three-jaw pullers. Now take the two-jaw puller as an example. At present, the puller is composed of a lead screw, a lead screw nut, a pull foot and a pull foot connecting piece, or a pull foot , pull foot connecting piece and hydraulic jack, because the pull foot is made of precision forged steel, it is impossible to bend randomly like an iron chain, and this composition structure is in accordance with the standards of pullers. The maximum opening distance of the puller is fixed. It is okay to pull the bearing with a smaller diameter, but it is not enough to pull the belt pulley with a larger diameter. The second is that the maximum extension length of the puller is fixed, and the puller thickness is relatively thin. The bearings are okay, but it won’t work if you pull a thicker multi-triangular...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the limitations of the range of use of the existing puller, to meet the needs of various mechanical maintenance

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