A self-tightening small lifting spreader

Abstract

The invention relates to a small self-tightening lifting appliance. The following solution scheme is adopted: the small self-tightening lifting appliance comprises a plurality of cross beams longitudinally arranged in parallel and longitudinal beams connecting each two adjacent cross beams separately, wherein cylinders inclined downwards and capable of sliding on each cross beam are installed at the two ends of the cross beam in an insertion manner separately, a flange is arranged at the upper end of each cylinder, a boss arranged below each cross beam 1 is arranged on the corresponding cylinder, and a thrust spring installed on the corresponding cylinder in a sleeving manner is arranged between each cross beam and the corresponding boss; and a connection block is installed at the lower end of each cylinder in a sleeving manner, a friction block is hinged to each connection block through a hinge shaft, a lifting hole is formed in each cross beam, location holes are formed in the two ends of each cross beam, and a steel wire rope penetrates in each location hole. The small self-tightening lifting appliance disclosed by the invention solves the problems of small universal range and high use cost of a traditional lifting appliance; and in particular, some articles without fixed points have no need to be bundled by virtue of ropes, the safety risk during a lifting process is lowered, and the steel wire ropes are only used as two-stage safety devices in the invention for emergency use, so that no falling-off of the articles even if in the case of unforeseen circumstances is ensured.

Description

technical field [0001] The invention relates to the field of hoisting machinery, in particular to a self-tightening small hoisting spreader. Background technique [0002] In the field of hoisting machinery, various spreaders corresponding to different lifting objects are widely used in various industries. Most of these spreaders are specially designed and have no versatility. The cost is high and depends on power consumption, and it cannot be accepted by various small and medium-sized enterprises, and the versatility of this type of spreader is only limited to a certain type of industry. In addition, for some industries or products, due to the particularity of their products, they cannot be fixed according to fixed lifting points when lifting, such as mold raw materials, stone blanks, wood carving raw materials, etc., the common method is to tie them with ropes Although this method seems to be economical for lifting, it relies too much on labor. When the object is large, it...

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Problems solved by technology

[0002] In the field of hoisting machinery, various spreaders corresponding to different lifting objects are widely used in various industries. Most of these spreaders are specially designed and have no versatility. The cost is high and depends on power consumption, and it cannot be accepted by various small and medium-sized enterprises, and the versatility of this type of spreader is limited to a certain type of industry.

In addition, for some industries or products, due to the particularity of their products, they cannot be fixed according to fixed lifting points when lifting, such as mold raw materials, stone blanks, wood carving raw materials, etc., the common method is to tie them with ropes Lifting, although this method seems economical, it relies too much on labor. When the object is large, it needs multiple people to cooperate at the same time, and the edges and corners of the object are easy to cut off the rope during the lifting process, which poses a great safety hazard

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