Spare tire lifting device for engineering dump truck

Abstract

The invention discloses a lifting device for a spare tire of an engineering dump truck. The lifting device structurally comprises a mounting bottom plate, fixed blocking boards, a central shaft rod, achain retracting reel, a worm gear, a force-receiving transmission rod, a sealing ring, an anti-jamming mechanism and a power worm, wherein the two fixed blocking boards are separately arranged on the left side and the right side of the upper surface of the mounting bottom plate; the fixed blocking boards are connected to the mounting bottom plate by electric welding; circular holes of which thediameter is the same as the diameter of the central shaft rod are formed in the middle of the fixed blocking boards; the chain retracting reel is mounted between the fixed blocking boards through thecentral shaft rod; the worm gear is arranged on the right side surface of the central shaft rod and positioned on the right of the fixed blocking boards; and the worm gear is connected to the centralshaft rod by electric welding. By virtue of the anti-jamming mechanism, when the spare tire needs to be removed, the lifting device can stir up and clear silt in the engineering dump truck through a first stirring structure and a second stirring structure so as to reduce damage to parts when the spare tire is wound down; and at the same time, a rotating structure is utilized to effectively reducestrength required by a user to wind down the spare tire.

Description

technical field [0001] The invention relates to a lifting device for a spare tire of an engineering dump truck, which belongs to the field of mechanical lifting devices. Background technique [0002] Since the truck spare tire is high and heavy from the ground, it is difficult to remove it manually, so a spare tire lifter is needed to lift the spare tire to achieve the purpose of replacement. It is generally divided into wire rope type and chain type spare tire lifter. [0003] However, in the existing technology, the construction dump truck needs to drive on bad roads, causing sand to enter, which makes the inside of the center stuck, so that the spare tire will be deformed when the external force is rotated and shaken. strenuous. Contents of the invention [0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a lifting device for a spare tire of an engineering dump truck to solve the problems in the prior art that the ...

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Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a lifting device for a spare tire of an engineering dump truck to solve the problems in the prior art that the engineering dump truck needs to drive on bad roads and cause sand to enter, thereby causing the center to be stuck. The defect that deformation will occur when the spare tire is rotated and shaken by external force, and at the same time, it is more difficult during the rotation and shaken down process

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