CN223254773U - Anti-falling lifting device - Google Patents

Abstract

The utility model relates to an anti-falling hoisting device which comprises a pulley yoke, pulleys, pulley shafts, steel pipes and anti-falling steel wire ropes, wherein the upper ends of the pulley yoke are hoisted on a beam or a wall, the pulleys are movably arranged in the pulley yoke through the pulley shafts, the steel pipes are arranged at the lower ends of the pulley yoke, the anti-falling steel wire ropes penetrate through the steel pipes, the two ends of the anti-falling steel wire ropes are connected with the beam or the wall, and the anti-falling steel wire ropes are crossed with the hoisting ropes wound on the pulleys. The anti-falling steel wire rope passes through the pulley from the lower part of the pulley by utilizing the steel tube, the steel tube ensures that the pulley cannot be wound with the anti-falling steel wire rope in the operation process, the normal rotation of the pulley is influenced, the anti-falling effect can be achieved by utilizing the anti-falling steel wire rope, the falling of the hoisting device and the heavy objects of the hoisting device is prevented, and the production safety is ensured. When the pulley shaft breaks, the steel tube is matched with the limiting frame to prevent the pulley and the anti-falling steel wire rope from falling to the ground, and the steel tube can also support the maximum weight of the pulley and the suspended object.

Description

Anti-falling lifting device

Technical Field

The utility model relates to the technical field of lifting appliances, in particular to an anti-falling lifting device.

Background

The pulley sling is a device for lifting and moving heavy objects, which is matched with a sling (a general term of a tool used for connecting a crane and a lifted object in lifting operation) through pulleys (a simple machine, mainly reducing friction through rolling of a rim of the pulley sling, thereby changing the direction of force or achieving a labor-saving effect). The pulley plays a role in transmission and assistance in the lifting appliance, so that the lifting operation is more efficient and safer, and the pulley is widely used in oil well operation and building industry. In the process of lifting the heavy objects, the pulley rotating shaft is inevitably broken, or the pulley block falls off and other safety faults, the existing lifting device does not make a safety redundant arrangement for the falling of the pulley block, and the lifting device cannot be saved once falling, so that improvement is needed.

Disclosure of utility model

Based on the above, it is necessary to provide a fall protection hoisting device against the above problems.

The utility model provides an anti-falling hoisting device, includes pulley yoke, pulley shaft, steel pipe and anticreep wire rope, the upper end hoist and mount of pulley yoke are on roof beam or wall, the pulley passes through pulley shaft movable mounting in the pulley yoke, the lower extreme at the pulley yoke is installed to the steel pipe, anticreep wire rope runs through the steel pipe, anticreep wire rope both ends and roof beam or wall connection, anticreep wire rope is crisscross with the lifting rope of winding on the pulley.

Preferably, the pulley frame is further provided with a limiting frame, the limiting frame is in crossed connection with the pulley frame, and two end parts of the limiting frame are provided with limiting pin shafts.

Preferably, the two ends of the pulley shaft extend to the outer side of the pulley frame, one end of the pulley shaft is locked through a latch, the two end parts of the pulley shaft are provided with anti-falling hooks, and the anti-falling hooks are connected with the beam, the wall or the pulley frame through ropes.

Preferably, the outer circumferential surface of the pulley is provided with a groove for matching with the lifting rope.

The anti-falling steel wire rope has the advantages that the steel tube penetrates through the lower portion of the pulley, the pulley is guaranteed not to be wound with the anti-falling steel wire rope in the running process, normal rotation of the pulley is affected, the anti-falling steel wire rope can play a role in preventing the lifting device and the lifted heavy objects from falling, and production safety is guaranteed. When the pulley shaft breaks, the steel tube is matched with the limiting frame to prevent the pulley and the anti-falling steel wire rope from falling to the ground, and the steel tube can also support the maximum weight of the pulley and the suspended object.

Drawings

FIG. 1 is a schematic structural view of an anti-falling lifting device according to an embodiment;

fig. 2 is a schematic side view of an anti-falling lifting device.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1-2, an anti-falling hoisting device comprises a pulley frame 1, a pulley 2, a pulley shaft 3, a steel tube 4 and an anti-falling steel wire rope 5, wherein the upper end of the pulley frame 1 is hoisted on a beam or a wall, the pulley 2 is movably installed in the pulley frame 1 through the pulley shaft 3, the steel tube 4 is installed at the lower end of the pulley frame 1, the anti-falling steel wire rope 5 penetrates through the steel tube 4, two ends of the anti-falling steel wire rope 5 are connected with the beam or the wall, and the anti-falling steel wire rope 5 is crisscrossed with a hoisting rope wound on the pulley 2. Specifically, in this embodiment, the upper end of the pulley frame 1 is connected with a beam or a wall through a bolt or a pin, and is fixed, the pulley 2 is movably sleeved on the pulley shaft 3, specifically, is connected through a bearing, the pulley 2 can rotate in the pulley frame 1, a lifting rope (not shown in the figure) is sleeved on the pulley 2, and the weight can be lifted by using the lifting rope. In order to prevent the pulley yoke 1 from being separated from a beam or a wall in the process of lifting a heavy object, a lifting device and the heavy object synchronously drop, a steel pipe 4 is arranged at the lower end of the pulley yoke 1, the steel pipe 4 is positioned under the pulley 2 and used for inserting the anti-drop steel wire rope 4, the anti-drop steel wire rope 4 adopts a steel rope, the bearing capacity is strong, the steel pipe 4 is used for limiting the anti-drop steel wire rope 5, the pulley 2 is prevented from being bitten into the anti-drop steel wire rope 5 in the rotating process, the pulley 2 cannot freely rotate, the anti-drop steel wire rope 5 is limited by the steel pipe 4 and is crossed with a lifting rope for lifting the heavy object, and when the lifting device integrally falls, the anti-drop steel wire rope 5 can be matched with the pulley 2 and the pulley 2 to wind the lifting rope, so that the lifting device is lifted, the falling of the anti-drop steel wire rope is prevented, and the occurrence of a safety accident is avoided.

As shown in fig. 2, the pulley frame 1 is further provided with a limiting frame 6, the limiting frame 6 is in crisscross connection with the pulley frame 1, and two end parts of the limiting frame 6 are provided with limiting pin shafts 61. Specifically, the limiting frame 6 is horizontally arranged, the limiting frame 6 is matched with the steel pipe 4, the pulley 2 is limited in front and back directions and in the lower direction, and limiting pin shafts 61 are arranged at two ends of the limiting frame, so that the pulley 2 is prevented from being separated from the pulley frame 1. And the steel pipe 4 at the lower end of the pulley 2 can bear the maximum weight of the pulley 2 and the suspended objects.

As shown in fig. 1-2, two ends of the pulley shaft 3 are arranged outside the pulley frame 1 in an extending mode, one end of the pulley shaft 3 is locked through a latch, two end portions of the pulley shaft 3 are provided with anti-falling hooks 31, and the anti-falling hooks 31 are connected with a beam or a wall or the pulley frame 1 through ropes. Specifically, pulley shaft 3 locks through the bolt, and the bolt is in butt with pulley yoke 1's lateral surface, can avoid pulley 2 in the rotation in-process, pulley shaft 3 receives the skew that shakes. The anti-falling hooks 31 at the two ends are connected with the beam or the wall or the pulley yoke 1 through ropes, so that the pulley shaft 3 is prevented from being broken and directly falling down.

As shown in fig. 1, the outer circumferential surface of the pulley 2 is provided with a groove 21 for matching with a lifting rope, and the lifting rope is embedded in the groove 21, so that the pulley 2 is prevented from being separated from the pulley surface of the pulley 2 and being blocked in the rotation process.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (4)

1. The anti-falling hoisting device is characterized by comprising a pulley yoke, pulleys, pulley shafts, steel pipes and anti-falling steel wire ropes, wherein the upper ends of the pulley yokes are hoisted on a beam or a wall, the pulleys are movably arranged in the pulley yokes through the pulley shafts, the steel pipes are arranged at the lower ends of the pulley yokes, the anti-falling steel wire ropes penetrate through the steel pipes, the two ends of the anti-falling steel wire ropes are connected with the beam or the wall, and the anti-falling steel wire ropes are crossed with the hoisting ropes wound on the pulleys.

2. The anti-falling hoisting device of claim 1, wherein the pulley yoke is further provided with a limiting frame, the limiting frame is in cross connection with the pulley yoke, and two end parts of the limiting frame are provided with limiting pin shafts.

3. The anti-falling hoisting device according to claim 1, wherein two ends of the pulley shaft are arranged on the outer side of the pulley frame in an extending mode, one end of the pulley shaft is locked through a latch, two end portions of the pulley shaft are provided with anti-falling hooks, and the anti-falling hooks are connected with a beam, a wall or the pulley frame through ropes.

4. The anti-falling lifting device according to claim 1, wherein grooves matched with lifting ropes are formed in the outer peripheral surface of the pulley.