A special tool for hoisting sleeves

Abstract

This utility model relates to the field of hoisting tools, specifically to a special tool for hoisting sleeves. It includes a hook mounted on a crane, with at least two pairs of slings connected to the hook via a shackle assembly. Each sling has a hook plate at its lower end, and the hook plate has a transverse groove for engaging the sleeve's sidewall. The upper part of the hook plate near the groove opening is hinged to the sling. This tool helps solve the problem of low efficiency in existing hoisting methods.

Description

Technical Field

[0001] This utility model relates to the field of hoisting tools, specifically to a special tool for hoisting sleeves. Background Technology

[0002] In the cold rolling process, the sleeves used are typically cylindrical. During transport, they need to be hoisted and placed onto sleeve racks for storage. Currently, the commonly used hoisting method is to use C-hooks for coil lifting, but this method has many drawbacks: First, only one sleeve can be transported at a time, resulting in extremely low hoisting efficiency; second, its safety factor is low, as the sleeve is prone to slipping during hoisting, which may lead to sleeve damage and safety accidents, seriously affecting production operations.

[0003] Therefore, developing a specialized lifting tool that can lift multiple sleeves at once without slipping is of great practical significance. Utility Model Content

[0004] The purpose of this utility model is to provide a special tool for hoisting sleeves, which helps to solve the problems of low efficiency and low safety factor of existing hoisting methods.

[0005] The technical solution of this utility model is as follows: a special tool for hoisting sleeves, including a hook installed on a crane, at least two pairs of slings connected to the hook via a hanging ring assembly, each sling having a hook plate at its lower end, and a slot for engaging the sleeve sidewall on the hook plate, the upper part of the hook plate near the slot opening being hinged to the sling.

[0006] Furthermore, the hook is a ram's horn hook equipped with an anti-detachment lock.

[0007] Furthermore, the hanging ring assembly includes a first hanging ring connected to the hook, and a second hanging ring for connecting to the sling is provided on the lower side of the first hanging ring.

[0008] Furthermore, the sling is a steel wire rope with a diameter of 1 cm or more, the upper end of the steel wire rope has an annular part that cooperates with the hanging ring assembly, and the lower end of the steel wire rope is connected to a U-shaped shackle that is hinged to the hook plate.

[0009] Furthermore, the length of the wire rope is 2.4 m to 2.6 m.

[0010] Furthermore, the sling is a circular chain, the upper end of which is connected to the hanging ring assembly, and the lower end of which is connected to a U-shaped shackle that is hinged to the hook plate.

[0011] Furthermore, the length of the circular chain is 2.4 m to 2.6 m.

[0012] Furthermore, the upper part of the hook plate near the opening of the slot is provided with a through hole through which the pin of the U-shaped shackle for connection with the sling passes.

[0013] Furthermore, the hook plate is a metal plate with a thickness of 1.8 cm to 2.2 cm, and the depth of the slot is 16 cm to 18 cm.

[0014] Compared with the prior art, the present invention has the following advantages: the tool helps to solve the problems of low efficiency and low safety factor of the existing hoisting method, and can achieve the effect of hoisting 2-3 sleeves at a time, and the sleeves are not easy to slip during the hoisting process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a partially enlarged view of the present invention; Figure 3 This is an enlarged view of the hook plate of this utility model; Figure 4 This is a top view of the hook plate of this utility model; In the diagram: 1-Crane 2-Hook 21-Anti-detachment lock 3-Hanging ring assembly 31-First hanging ring 32-Second hanging ring 4-Sling 41-Ring part 5-Hook plate 51-Slot 6-U-shaped shackle 61-Pin. Detailed Implementation

[0016] To make the above-mentioned features and advantages of this utility model more easily understood, specific embodiments are described below in conjunction with the accompanying drawings, but this utility model is not limited thereto.

[0017] refer to Figures 1 to 4 A special tool for lifting sleeves includes a hook 2 mounted on a crane 1 in a workshop and driven to rise and fall by a winch on the crane itself. Three pairs of slings 4 are connected to the hook via a hanging ring assembly 3. Each sling has a hook plate 5 at its lower end, and the hook plate has a transverse groove 51 for engaging with the side wall of the sleeve's port. The upper part of the hook plate near the groove opening is hinged to the sling. In use, the sleeve is lifted by engaging a pair of hook plates onto the side walls of the two ports of the sleeve (the sleeve's wall thickness is less than the groove width).

[0018] In this embodiment, by setting the connection part between the hook plate and the sling on the upper part of the hook plate near the opening of the slot, it helps the opening of the slot of the hook plate to face upward in its natural state. During hoisting, the hook plate can avoid detaching from the sleeve after the slot of the hook plate is engaged with the side wall of the sleeve port.

[0019] In this embodiment, the hook is a ram's horn hook (a commercially available product) hinged with an anti-slip lock (anti-slip plate) 21, which helps to prevent the lifting ring assembly from slipping out of the hook and improves safety.

[0020] In this embodiment, the hanging ring assembly includes a first hanging ring 31 connected to the hook, and a second hanging ring 32 for connecting to the sling is provided on the lower side of the first hanging ring.

[0021] In this embodiment, the sling is a steel wire rope with a diameter of 1 cm or more and a length of 2.4 m to 2.6 m. The upper end of the steel wire rope has an annular portion 41 that cooperates with a hanging ring assembly, and the lower end of the steel wire rope is connected to a U-shaped shackle 6 that is hinged to a hook plate. After the upper end of the steel wire rope passes over the second hanging ring, it is connected to the main body of the steel wire rope through components such as the U-shaped shackle to form an annular portion; after the lower end of the steel wire rope passes over the U-shaped shackle, it is connected to the main body of the steel wire rope through components such as the U-shaped shackle to form an annular portion, thereby realizing the connection between the steel wire rope, the second hanging ring, and the U-shaped shackle to form an integral whole.

[0022] In another embodiment, the sling can also be a circular chain with a length of 2.4 m to 2.6 m. The upper end of the circular chain is connected to the second loop of the loop assembly, and the lower end of the circular chain is connected to a U-shaped shackle that is hinged to the hook plate. The uppermost loop of the circular chain and the second loop form an interlocking structure. After the U-shaped body of the U-shaped shackle passes through the lowermost loop, the pin of the U-shaped shackle passes through the through hole on the hook plate and locks with the U-shaped body.

[0023] In this embodiment, the upper part of the hook plate near the opening of the slot is provided with a through hole through which the pin 61 of the U-shaped shackle for connection with the sling passes, so that the pin of the U-shaped shackle passes through the through hole of the hook plate and locks with the U-shaped body. The pin and the U-shaped body are connected by threads and then locked by an anti-loosening pin, or by a nut, etc.

[0024] In this embodiment, the hook plate is a metal plate with a thickness of 1.8cm to 2.2cm, the depth of the slot is 16cm to 18cm, and the width of the slot is 2cm to 3cm, thereby improving the strength of the hook plate and ensuring that the slot can fully engage with the side wall of the sleeve, effectively ensuring the safety factor of hoisting.

[0025] If the terms "first" and "second" are used in the above description to define the components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of distinguishing the components in the description. Unless otherwise stated, the above terms have no special meaning.

[0026] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws) or a non-detachable fixed connection (e.g., riveting or welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).

[0027] In addition, unless otherwise stated, the terms used in any of the technical solutions disclosed in this utility model to indicate positional relationships or shapes include states or shapes that are similar to, close to, or approximate with those states or shapes.

[0028] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0029] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A special tool for lifting sleeves, comprising a hook mounted on a crane within a workshop and driven to rise and fall by a winch mounted on the crane, characterized in that, The hook is connected to at least two pairs of slings via a ring assembly. The ring assembly includes a first ring connected to the hook, and a second ring for connecting to the slings is provided below the first ring. The slings are steel wire ropes with a diameter of 1 cm or more. The upper end of the steel wire rope has an annular portion that mates with the ring assembly, and the lower end of the steel wire rope is connected to a U-shaped shackle hinged to a hook plate. The length of the steel wire rope is 2.4 m to 2.6 m. Each sling has a hook plate at its lower end. The hook plate has a transverse groove for engaging with the side wall of a sleeve. The wall thickness of the sleeve is less than the width of the groove. In its natural state, the opening of the groove faces upward, and the upper part of the hook plate near the groove opening is hinged to the sling. The upper part of the hook plate near the groove opening has a through hole through which the pin of the U-shaped shackle for connecting to the sling passes. The hook plate is a metal plate with a thickness of 1.8 cm to 2.2 cm, and the groove depth is 16 cm. ~18cm, the width of the card slot is 2 cm ~3cm.

2. The special tool for lifting sleeves according to claim 1, characterized in that, The hook is a ram's horn hook equipped with an anti-detachment lock.

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