Safe precast pile hoisting device

Abstract

The utility model discloses a safe precast pile hoisting device, which is characterized by comprising a mounting ring, two steel wire ropes and two hangers, the two hangers are oppositely arranged, each hanger comprises a lifting hook, a pressing plate and a lifting component connected with the pressing plate, the lifting hook is provided with a U-shaped cavity, the pressing plate is arranged in the U-shaped cavity, and the lifting component is arranged in the U-shaped cavity. And the vertical height of the lifting assembly in the U-shaped cavity is adjusted through the lifting assembly. The pressing plate capable of being adjusted up and down is designed in the U-shaped cavity of the lifting appliance, and the thickness of a limiting area of the lifting appliance can be adjusted according to the wall thicknesses of different precast piles, so that the problem of unhooking is avoided; in addition, the lower transverse part of the lifting hook is stamped downwards to form a plurality of anti-skid lines, the friction force of the contact position between the lifting hook and the precast pile during lifting can be increased, and meanwhile, reinforcing convex ribs for reinforcing the strength of the lifting hook are further formed in the stamping process, so that the bearing strength of the lifting appliance is higher, and the problems of deformation and even breakage are not prone to occurring.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe pile object hoisting, in particular to a safe prefabricated pile hoisting device. Background Art

[0002] When prestressed high-strength hollow pipe piles and prestressed high-strength hollow square piles are manufactured, hoists are required to realize the hoisting operation of the prefabricated piles.

[0003] For example, Chinese utility model patent publication number CN213569120U specifically discloses a hoisting device for precast concrete pipes, belonging to the technical field of pipe pile hoisting. The precast concrete pipe hoisting device described in this utility model primarily comprises support rods, symmetrically arranged hooks, lifting rings, and a steel wire rope. This precast concrete pipe hoisting device enables rapid hoisting and relocation of circular concrete pipes.

[0004] In actual application, the applicant found that since the thickness of the limiting area of the sling itself is certain, and the thickness of different precast piles will vary to a certain extent, the precast piles with narrower wall thickness will become unhooked during lifting, which is prone to safety accidents; secondly, the main load-bearing position during lifting comes from the lower part of the sling. After long-term use, the lower part of the sling is prone to deformation, which will affect the safety of lifting. Utility Model Content

[0005] The purpose of the utility model is to provide a safe prefabricated pile lifting device in order to solve the above-mentioned problems.

[0006] The technical solution adopted by the present invention is as follows: a safe prefabricated pile lifting device, characterized in that it includes a mounting ring and two steel wire ropes and a lifting device, the two lifting devices are arranged opposite to each other, the lifting device includes a hook, a pressure plate and a lifting assembly connected to the pressure plate, the hook has a U-shaped cavity, the pressure plate is placed in the U-shaped cavity, and its vertical height in the U-shaped cavity is adjusted by the lifting assembly, and a limited space is formed between the pressure plate and the hook; the hook has an integrated upper horizontal part, a lower horizontal part and a vertical part, and the upper wall surface of the lower horizontal part is punched downward along the horizontal direction to form a plurality of anti-slip lines.

[0007] In a preferred embodiment, the lower wall surface of the lower transverse portion is protruded with reinforcing ribs corresponding to the anti-slip lines.

[0008] In a preferred embodiment, the lifting assembly includes a threaded rod and a turning handle, the upper horizontal portion is provided with a threaded through hole adapted to the threaded rod, the turning handle is integrally provided on the top of the threaded rod, and the bottom end of the threaded rod is fixedly connected to the pressure plate.

[0009] In a preferred embodiment, a mounting hole is longitudinally provided on the upper side of the upper transverse portion, and a lower hanging ring for connecting a steel wire rope is provided in the mounting hole.

[0010] In a preferred embodiment, a plurality of triangular plates are welded longitudinally at the connections between the upper and lower transverse parts and the vertical parts.

[0011] In a preferred embodiment, the mounting ring is provided with an upper hoisting ring for connecting the top of the wire rope. In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0012] 1. In this utility model, a pressure plate that can be adjusted up and down is designed in the U-shaped cavity of the spreader. The thickness of the limit area of the spreader can be adjusted according to the wall thickness of different precast piles to avoid the problem of unhooking;

[0013] 2. In the present invention, a plurality of anti-slip grooves are punched downward on the lower horizontal part of the hook, which can increase the friction between the hook and the precast pile at the contact position during lifting. At the same time, reinforcing ribs are formed during the punching process to strengthen the strength of the hook itself, so that the pressure-bearing strength of the sling itself is greater. At the same time, a triangular plate is welded between the horizontal part and the vertical part, and the triangular plate is used as a reinforcement at the connection, which is not easy to deform or even break after use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the front plan structure of the entire utility model;

[0015] Figure 2 It is a schematic diagram of the cross-sectional plan structure of the sling in the utility model.

[0016] Markings in the figure: 1-mounting ring, 2-wire rope, 3-sling, 31-handle, 32-hook, 33-mounting hole, 34-pressing plate, 35-threaded rod, 36-triangular plate, 37-anti-slip groove, 38-reinforcement rib. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] Reference Figure 1-2A safe precast pile lifting device is characterized in that it includes a mounting ring 1 and two steel wire ropes 2 and a sling 3. The two slings 3 are arranged opposite to each other. The sling 3 includes a hook 32, a pressure plate 34 and a lifting assembly connected to the pressure plate 34. The hook 32 has a U-shaped cavity, and the pressure plate 34 is placed in the U-shaped cavity. Its vertical height in the U-shaped cavity is adjusted by the lifting assembly. A limited space is formed between the pressure plate 34 and the hook 32. A pressure plate 34 that can be adjusted up and down is designed in the U-shaped cavity of the sling 3. The thickness of the limited area of the sling 3 can be adjusted according to the wall thickness of different precast piles (not shown in the figure) to avoid the problem of unhooking.

[0019] The hook 32 is preferably made of steel, but this is not limited here.

[0020] Furthermore, the hook 32 has an integrated upper horizontal part, a lower horizontal part and a vertical part. The upper wall surface of the lower horizontal part is punched downward along the horizontal direction to form a plurality of anti-slip grooves 37, and the lower wall surface of the lower horizontal part is protruding to form reinforcing ribs 38 corresponding to the anti-slip grooves 37. The multiple anti-slip grooves 37 formed by stamping can increase the friction force at the contact position between the hook 32 and the prefabricated pile during lifting, and the problem of unhooking is not easy to occur. At the same time, reinforcing ribs 38 for strengthening the strength of the hook 32 itself are also formed during the stamping process, so that the pressure-bearing strength of the sling 3 itself is greater.

[0021] The anti-slip lines 37 are in arc, square or other shapes, which are not limited here.

[0022] Furthermore, the lifting assembly includes a threaded rod 35 and a turning handle 31 . The upper horizontal portion is provided with a threaded through hole adapted to the threaded rod 35 . The turning handle 31 is integrally provided on the top of the threaded rod 35 . The bottom end of the threaded rod 35 is fixedly connected to the pressure plate 34 .

[0023] Furthermore, a mounting hole 33 is longitudinally opened on the upper side of the upper transverse portion, and a lower hanging ring for connecting the steel wire rope 2 is provided in the mounting hole 33 .

[0024] Furthermore, a plurality of triangular plates 36 are welded longitudinally at the connection between the upper and lower transverse parts and the vertical parts, and a triangular plate 38 is welded between the transverse part and the vertical part. The triangular plates are used as reinforcements at the connection between the transverse part and the vertical part, and are not prone to deformation or even breakage after use.

[0025] Furthermore, an upper hoisting ring for connecting the top of the steel wire rope 2 is provided on the mounting ring 1, wherein the upper hoisting ring is used to be connected to the hook of a crane, and the crane is used to realize the hoisting operation of the precast pile.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A safe precast pile lifting device, characterized in that: It includes a mounting ring and two steel wire ropes and a sling, and is characterized in that: the two slings are arranged opposite to each other, and the sling includes a hook, a pressure plate and a lifting assembly connected to the pressure plate, the hook has a U-shaped cavity, the pressure plate is placed in the U-shaped cavity, and its vertical height in the U-shaped cavity is adjusted by the lifting assembly, and a limited space is formed between the pressure plate and the hook; the hook has an integrated upper horizontal part, a lower horizontal part and a vertical part, and the upper wall surface of the lower horizontal part is punched downward along the horizontal direction to form a plurality of anti-slip grooves.

2. A safe precast pile hoisting device according to claim 1, characterized in that: The lower wall surface of the lower transverse portion is protruded to form reinforcing ribs corresponding to the anti-slip lines.

3. A safe precast pile hoisting device according to claim 1, characterized in that: The lifting assembly includes a threaded rod and a turning handle. The upper horizontal portion is provided with a threaded through hole adapted to the threaded rod. The turning handle is integrally arranged on the top of the threaded rod. The bottom end of the threaded rod is fixedly connected to the pressure plate.

4. A safe precast pile hoisting device according to claim 1, characterized in that: A mounting hole is longitudinally provided on the upper side of the upper transverse portion, and a lower hanging ring for connecting a steel wire rope is provided in the mounting hole.

5. A safe precast pile hoisting device according to claim 1, characterized in that: A plurality of triangular plates are welded longitudinally at the connection points between the upper transverse portion, the lower transverse portion and the vertical portion.

6. A safe precast pile hoisting device according to claim 1, characterized in that: The mounting ring is provided with an upper hanging ring for connecting the top of the steel wire rope.

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