Automatic hook and unhook sling

Abstract

The present invention proposes an automatic hooking and unhooking sling, comprising a sling body, a hook and a guide plate, the bottom of the sling body is fixed to the top of the hook, the guide plate is arranged at the bottom of the hook and moves with the hook opening and closing, and a slider is arranged at the bottom of the sling body, and an inclined surface is arranged at the bottom of the slider, so that when the hanging rod abuts against the inclined surface, the hook is opened and the hanging rod moves sideways relative to the sling to detach from the sling. The automatic hooking and unhooking sling of the present invention can realize automatic hooking and automatic unhooking during operation, and is suitable for sites where the on-site environment is not suitable for human operation, and the sling has the characteristics of simple structure, easy manufacturing and high degree of automation.

Description

Technical Field

[0001] The invention belongs to the field of lifting equipment, and in particular relates to an automatic hooking and unhooking lifting device. Background Art

[0002] At present, in the material transportation and hoisting, most of the existing hoists are manually hung on the hopper by hooks, and the hopper is also manually disassembled when unloading. There are also some hoists that can realize automatic hooking, but the positioning accuracy of the driving operation is high, which affects the work efficiency, but they cannot be automatically unhooked and still cannot be done manually. This not only increases the hoisting cost and affects the hoisting efficiency, but some materials are also harmful to the human body, directly affecting the health of personnel, especially in dangerous places such as high temperature or high corrosion, which is not suitable for manual operation, and brings safety hazards to operators. Summary of the invention

[0003] The purpose of the present application is to provide an automatic hooking and unhooking sling to solve the problem that the sling in the prior art cannot achieve automatic hooking and unhooking. The sling has the characteristics of simple structure, high degree of automation, safety and reliability.

[0004] The present invention proposes an automatic hooking and unhooking sling, comprising a sling body, a hook and a guide plate, wherein the bottom of the sling body is fixed to the top of the hook, the guide plate is arranged at the bottom of the hook and moves with the opening and closing of the hook, and a slider is arranged at the bottom of the sling body, and an inclined surface is arranged at the bottom of the slider, so that when the hanging rod abuts against the inclined surface, the hook is opened and the hanging rod moves sideways relative to the sling to detach from the sling.

[0005] In a preferred embodiment, the guide plate is structured as a conical surface, and at least two guide plates are required to cooperate with each other. The guide plate is designed as a conical surface so that the guide plate can be better fixed with the bottom of the hook.

[0006] In a preferred embodiment, the guide plate is fixed to the bottom of the hook by welding. As long as the guide plate and the hook can be fixed, no limitation is made here.

[0007] In a preferred embodiment, a boss for pushing open the top of the hook is provided on the side of the inclined surface of the slider facing the main body of the sling. When the sling is automatically unhooked, the sling drops to a height of 16-20 cm, and the boss on the inclined surface of the slider contacts the top of the hook. Under the action of force, the boss will open the top of the hook, and the guide plate will open with the hook.

[0008] In a preferred embodiment, the slider is fixedly or movably connected to the main body of the sling via a pin. Regardless of whether the slider is fixedly or movably connected to the main body of the sling, when the automatic unhooking action is performed, the slider can push the top of the hook open, and the inclined surface of the slider can allow the sling to deviate from the hanging rod, so that the hook can be better detached from the hanging rod.

[0009] In a preferred embodiment, a D-shaped buckle is provided on the top of the sling body, and the top of the sling body is fixedly connected to the D-shaped buckle through a pin shaft. The sling is connected to the crane through the D-shaped buckle.

[0010] In a preferred embodiment, a positioning groove is provided at the bottom of the sling body, and the top of the hook passes through the positioning groove and is fixedly connected by a pin shaft.

[0011] In a preferred embodiment, the head of the hanging rod is conical, and the inner side of the head is concave and provided with a conical groove. The head of the hanging rod is designed to be conical, and when the automatic hooking action is performed, the guide plate contacts the head of the hanging rod, and the conical head of the hanging rod allows the guide plate to open better.

[0012] In a preferred embodiment, the bottom end of the hanging rod is fixedly connected to the material. The hanging rod cooperates with the sling to lift the material.

[0013] In a preferred embodiment, a limit block is provided on the spreader body, and when the slider is movably arranged, the limit block restricts the slider and the spreader body to only slide relative to each other.

[0014] The automatic hook-and-unhook sling of the present invention comprises a sling body, a hook and a guide plate. The bottom of the sling body is fixed to the top of the hook. The guide plate is arranged at the bottom of the hook and moves with the hook opening and closing. A slider is arranged at the bottom of the sling body. The bottom of the slider is arranged with an inclined surface, so that when the hanging rod abuts against the inclined surface, the hook is opened and the hanging rod moves sideways relative to the sling to detach from the sling. The automatic hook-and-unhook sling of the present invention has low requirements for the operating accuracy of the crane, and can allow the sling to accurately lift materials within a certain range, reduce the technical requirements for the crane operator, and improve work efficiency at the same time. It can also realize on-site operation without personnel, and the operator can remotely operate the crane, which is suitable for sites where the on-site environment is not suitable for personnel operation. The sling has the characteristics of simple structure, low investment cost, safety and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated into and constitute a part of this specification. The accompanying drawings illustrate the embodiments and are used together with the description to explain the principles of the present invention. It will be easy to recognize other embodiments and many expected advantages of the embodiments because they become better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale with each other. The same reference numerals refer to corresponding similar parts.

[0016] Figure 1 It is a structural schematic diagram of an automatic hooking and unhooking sling according to an embodiment of the present invention;

[0017] Figure 2 ab is a schematic diagram of a process of automatic hooking and unhooking of an automatic hooking and unhooking sling according to an embodiment of the present invention;

[0018] Figure 3 ac is a schematic diagram of the automatic unhooking process of an automatic hooking and unhooking sling in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The following will be combined with the attached Figure 1 The present invention is introduced in detail. An automatic hooking and unhooking sling of the present invention comprises a sling body 1, a hook 2 and a guide plate 5. The bottom of the sling body 1 is fixed to the top of the hook 2, the guide plate 5 is arranged at the bottom of the hook 2 and opens and closes with the hook 2, and a slider 3 is arranged at the bottom of the sling body 1, and an inclined surface is arranged at the bottom of the slider 3, so that when the hanging rod 7 abuts against the inclined surface, the hook 2 is opened and the hanging rod 7 moves sideways relative to the sling to detach from the sling.

[0021] In a specific embodiment, the guide plate 5 has a conical surface, and at least two guide plates 5 are required to work together. The guide plate 5 is fixed to the bottom of the hook 2 by welding. The guide plate 5 is designed to have a conical surface, so that the guide plate 5 can be better fixed with the bottom of the hook 2. As long as the guide plate 5 and the hook 2 can be fixed, no limitation is made here.

[0022] In a specific embodiment, a boss for pushing open the top of the hook 2 is provided on the side of the inclined surface of the slider 3 facing the sling body 1, and the boss on the slider 3 is fixedly or movably connected to the sling body 1 through a pin. When the sling is automatically unhooked, the sling drops to a height of 16-20 cm, and the boss on the inclined surface of the slider 3 contacts the top of the hook 2. Under the action of force, the boss will open the top of the hook 2, and the guide plate 5 will open with the hook 2. At the same time, the inclined surface of the slider 3 can allow the sling to deviate from the hanging rod 7, so that the hook 2 can be better separated from the hanging rod 7. Whether the slider 3 is fixedly or movably connected to the sling body 1, the slider 3 can push open the top of the hook 2 when the automatic unhooking action is performed.

[0023] In a specific embodiment, a D-shaped buckle 6 is provided on the top of the sling body 1, and the top of the sling body 1 is fixedly connected to the D-shaped buckle 6 through a pin, and the sling is connected to the crane through the D-shaped buckle 6. A positioning groove is provided at the bottom of the sling body 1, and the top of the hook 2 passes through the positioning groove and is fixedly connected through a pin. A limit block 4 is provided on the sling body 1, and when the slider 3 is movably set, the limit block 4 limits the slider 3 and the sling body 1 to only slide relative to each other.

[0024] In a specific embodiment, the head of the hanging rod 7 is conical, and the inner side of the head is concave and provided with a conical groove. The head of the hanging rod 7 is designed to be conical, and when the automatic hook action is performed, the guide plate 5 contacts the head of the hanging rod 7, and the conical head of the hanging rod 7 allows the guide plate 5 to open better. The bottom end of the hanging rod 7 is fixedly connected to the material, and the hanging rod 7 cooperates with the sling to lift the material.

[0025] Figure 2 a is a side view of an automatic hook and unhook sling, Figure 2 b is a main view of an automatic hook-and-unhook sling, as shown in Figure 2 As shown in 2a and 2b, the automatic hooking principle of the automatic hooking and unhooking sling is as follows: the sling is connected to the crane through the D-shaped buckle 6, and the operator controls the crane to move the sling above the hanging rod 7, and the center of the sling is allowed to be offset from the center of the hanging rod 7 by less than 20 cm. The sling is lowered to an appropriate height, and when the guide plate 5 contacts the head of the hanging rod 7, the sling continues to descend to a certain height. The guide plate 5 is welded to the bottom of the hook 2. Due to the action of gravity, the guide plate 5 opens along the conical head of the hanging rod 7, and then drives the hook 2 to open. When the hook 2 hooks the head of the hanging rod 7 and the sling is raised at the same time, because the inner side of the head of the hanging rod 7 is concave and provided with a conical groove, the hook will be automatically closed during the lifting process of the sling to prevent unhooking, and the automatic hooking action is completed at this time.

[0026] Figure 3 a is a rear view of an automatic hook and unhook sling. Figure 3 b is a side view of an automatic hook and unhook sling. Figure 3 c is a main view of an automatic hook-and-unhook sling, as shown in Figure 3 As shown in Figure ac, the automatic unhooking principle of the automatic hook unhooking sling is: the hopper is stationary after contacting the workbench, that is, the hanging rod 7 is stationary, and automatic unhooking is required at this time. The sling drops to a certain height, and the boss on the slider 3 contacts the top of the hook 2. Under the action of force, the boss will push open the hook 2, and at the same time, the inclined surface of the slider 3 makes the entire sling deviate from the center of the hanging rod 7, and finally after sideways movement and separation from the hanging rod 7, the hook 2 automatically closes, and the sling is raised again, and the unhooking action of the sling is completed.

[0027] An automatic hook-and-unhook sling of the present invention comprises a sling body 1, a hook 2 and a guide plate 5. The bottom of the sling body 1 is fixed to the top of the hook 2. The guide plate 5 is arranged at the bottom of the hook 2 and moves with the hook 2. A slider 3 is arranged at the bottom of the sling body 1. The bottom of the slider 3 is arranged with an inclined surface, so that when the hanging rod 7 abuts against the inclined surface, the hook 2 is opened and the hanging rod 7 moves sideways relative to the sling to detach from the sling. An automatic hook-and-unhook sling of the present invention has low requirements for the operating accuracy of the crane, and can allow the sling to accurately lift materials within a certain range, reduce the technical requirements for the crane operator, and improve work efficiency at the same time. It can also realize on-site operation without personnel, and the operator can remotely operate the crane, which is suitable for sites where the on-site environment is not suitable for personnel operation. The sling has the characteristics of simple structure, low investment cost, safety and stability.

[0028] Although the principles of the present invention are described in detail above in conjunction with the preferred embodiments of the present invention, those skilled in the art should understand that the above embodiments are merely explanations of the exemplary implementations of the present invention, and are not intended to limit the scope of the present invention. The details in the embodiments do not constitute limitations on the scope of the present invention, and any obvious changes such as equivalent transformations, simple replacements, etc. based on the technical solution of the present invention, without departing from the spirit and scope of the present invention, fall within the protection scope of the present invention.

Claims

1. An automatic hooking and unhooking sling, characterized in that: The sling comprises a sling body, a hook and a guide plate, the bottom of the sling body is fixed to the top of the hook, the guide plate is arranged at the bottom of the hook and opens and closes with the hook, and a slider is arranged at the bottom of the sling body, and an inclined surface is arranged at the bottom of the slider, so that when the hanging rod abuts against the inclined surface, the hook is opened and the hanging rod moves laterally relative to the sling to detach from the sling; the structure of the guide plate is a conical surface, and at least two pieces of the guide plates are required to work together, and a boss for pushing open the top of the hook is arranged on the side of the inclined surface of the slider facing the sling body, and the slider is fixedly or movably connected to the sling body through a pin shaft.

2. The automatic hooking and unhooking sling according to claim 1, characterized in that: The guide plate is fixed to the bottom of the hook by welding.

3. The automatic hooking and unhooking sling according to claim 1, characterized in that: A D-shaped buckle is arranged on the top of the sling body, and the top of the sling body is fixedly connected to the D-shaped buckle via a pin shaft.

4. The automatic hooking and unhooking sling according to claim 1, characterized in that: A positioning groove is arranged at the bottom of the sling body, and the top of the hook passes through the positioning groove and is fixedly connected by a pin shaft.

5. The automatic hooking and unhooking sling according to claim 1, characterized in that: The head of the hanging rod is in a conical shape, and the inner side of the head is concave and provided with a conical groove.

6. The automatic hooking and unhooking sling according to claim 5, characterized in that: The bottom end of the hanging rod is fixedly connected to the material.

7. The automatic hooking and unhooking sling according to claim 1, characterized in that: A limit block is arranged on the main body of the sling, and when the sliding block is movably arranged, the limit block restricts the sliding block and the main body of the sling to slide relative to each other.

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