A sling

Abstract

The utility model provides a kind of lifting appliance, it is related to wire coil or steel strand coil lifting appliance technical field;Including crossbeam, the central position of crossbeam is fixed with connecting mechanism, the both ends of crossbeam are respectively symmetrically installed with the leg plate that is hinged to middle part, and the bottom of leg plate has foot plate for supporting wire coil or steel strand coil bottom;Connecting mechanism includes the fixed rod that is vertically fixed on the top of crossbeam;The outer wall of fixed rod is sleeved with the outer sleeve that is movably cooperated with it in vertical direction, the bottom of outer sleeve is hinged with multiple hook claws that are evenly distributed around its axis line;The bottom of fixed rod is sleeved with the lower slide sleeve located on the top of crossbeam, and the lower slide sleeve is slidably cooperated with fixed rod, fixed sleeve is circular truncated cone shape that is thin at top and thick at bottom, and lower slide sleeve is circular truncated cone shape that is thick at top and thin at bottom, and the top outer diameter of lower slide sleeve and the bottom outer diameter of fixed sleeve are matched;The technical scheme of the utility model solves the problem of relying on manual plug-in lifting appliance latch when carrying wire coil or steel strand coil in prior art.

Description

Technical Field

[0001] This utility model relates to the field of lifting tools for wire coils or steel strand coils, and in particular to a lifting tool. Background Technology

[0002] Handling large coils or steel strands presents numerous challenges. Currently, common lifting methods rely primarily on flexible slings or specialized lifting equipment. Flexible slings, in particular, require manual placement of the slings around the hollow portion of the coil or steel strand before lifting with hoisting equipment, making the preparation and securing process cumbersome.

[0003] Currently, there are various types of special lifting devices for handling wire coils or steel strand coils, but in some aspects, manual operation is still required to varying degrees. For example, "a steel strand coil lifting device" (application number 2025214440706) uses the sliding of the main board to drive the connecting plate and leg plate to rotate. Although this has reduced the workflow, it still requires the use of pins that need to be manually inserted and removed.

[0004] Therefore, there is an urgent need for a lifting device that requires no manual insertion or removal of the pin. Utility Model Content

[0005] To address the aforementioned technical problem of relying on manual insertion and removal of lifting tool pins when handling coils or steel strands, a lifting tool is provided.

[0006] The technical means adopted in this utility model are as follows: A lifting device includes a crossbeam, a connecting mechanism fixed at the center of the crossbeam, the top of the connecting mechanism being connected to the output end of a lifting mechanism, and leg plates symmetrically installed at both ends of the crossbeam, the top of the leg plates being connected to the upper part of the connecting mechanism via a tension chain, the lower part of the leg plates being used to pass through the central through hole of a wire coil or steel strand coil, and the bottom of the leg plates having foot plates for supporting the bottom of the wire coil or steel strand coil. The connecting mechanism includes a fixed rod vertically fixed above the crossbeam; the outer wall of the fixed rod is fitted with an outer sleeve that moves in the vertical direction with it, the tension chain is connected to the outer sleeve, and the bottom of the outer sleeve is hinged with multiple hooks evenly distributed around its axis; the bottom of the fixed rod is fitted with a sliding sleeve located above the crossbeam, the sliding sleeve slides in fit with the fixed rod, and the upper part of the sliding sleeve is a fixed sleeve fixed to the outer wall of the fixed rod. The fixed sleeve is a frustum shape that is thinner at the top and thicker at the bottom, and the sliding sleeve is a frustum shape that is thicker at the top and thinner at the bottom, and the top outer diameter of the sliding sleeve matches the bottom outer diameter of the fixed sleeve.

[0007] Furthermore, the leg plate includes a first connecting plate, a second connecting plate, and a foot plate. The upper end of the first connecting plate is fixed to the tension chain, and the lower end is fixed to the top of the second connecting plate. The connection is hinged to the crossbeam. The angle between the first connecting plate and the second connecting plate is an obtuse angle. The foot plate is fixed to the bottom of the second connecting plate by a fixing plate, and the angle between the foot plate and the second connecting plate is a right angle or an obtuse angle.

[0008] Furthermore, the bottom of the claw has an upwardly sloping arc or bevel.

[0009] Furthermore, a top connecting plate is fixed to the top of the outer sleeve, and a lifting ring for connecting with the lifting mechanism is provided at the top of the top connecting plate. The tension chain is fixedly connected to the top connecting plate.

[0010] Furthermore, the sliding sleeve has a stepped frustum structure, divided into an upper section and a lower section. The outer diameter of the upper plane of the upper section matches the outer diameter of the bottom of the fixed sleeve. The side wall of the upper section is inclined towards the axial direction of the sliding sleeve, forming a conical surface that is thicker at the top and thinner at the bottom. The bottom of the conical surface is connected to the top of the lower section, and they have the same outer diameter.

[0011] Furthermore, bottom pads are fixed at both ends of the crossbeam.

[0012] When the leg plates are not subjected to external force, the two foot plates are close to each other.

[0013] Compared with the prior art, the present invention has the following advantages: 1. The lifting device provided by this utility model utilizes the sliding engagement of the sliding sleeve and the fixed rod, and the top outer diameter of the sliding sleeve is adapted to the bottom outer diameter of the fixed sleeve; the hook claws can be in three states: hooking the sliding sleeve, hooking only the fixed sleeve, or not hooking either the sliding sleeve or the fixed sleeve, thereby affecting the state of the leg plate. This realizes the continuous action of the lifting device inserting the wire coil, placing the wire coil, moving the wire coil, and detaching from the wire coil, eliminating the manual dependence on the insertion and removal of the pins in existing lifting devices.

[0014] 2. The bottom of the claw has an upward-sloping arc or bevel, which reduces friction when sliding over the edge of the sliding sleeve and improves the smoothness of the claw's movement.

[0015] 3. The sliding sleeve has a stepped frustum structure, divided into an upper section and a lower section. The outer diameter of the upper plane of the upper section is matched with the outer diameter of the bottom of the fixed sleeve. The lower section facilitates the smooth movement of the hook, while the upper section facilitates the increase of friction with the hook to make the hook rise.

[0016] Based on the above reasons, this utility model can be widely promoted in the fields of lifting tools and so on. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a lifting device structure according to the present invention (diagram showing the state of the hook and claw engaging the fixed sleeve).

[0019] Figure 2 This is a schematic diagram of a lifting device structure according to the present invention (diagram showing the state of the hook and claw engaging the lowering sleeve).

[0020] Figure 3 This is an overall schematic diagram of a lifting device for transporting wire coils or steel strand coils according to this utility model.

[0021] In the diagram: 1. Crossbeam; 2. Bottom pad; 3. Fixing rod; 4. Outer sleeve; 5. Hook; 6. Fixing sleeve; 7. Fixing plate; 8. Sliding sleeve; 9. Top connecting plate; 10. Lifting ring; 11. Extension chain; 12. Foot plate; 13. First connecting plate; 14. Second connecting plate. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments. To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] like Figures 1-3 As shown, this utility model provides a lifting device, including a crossbeam 1, with bottom pads 2 fixed at both ends of the bottom of the crossbeam 1; a connecting mechanism is fixed at the center of the crossbeam 1, and leg plates that are hinged to the crossbeam 1 are symmetrically installed at both ends of the crossbeam 1.

[0024] The connecting mechanism includes a fixed rod 3 vertically fixed above the crossbeam 1; the bottom of the fixed rod 3 is fitted with a sliding sleeve 8 located above the crossbeam 1. The sliding sleeve 8 has a stepped frustum structure, divided into an upper section and a lower section. The side wall of the upper section is inclined towards the axial direction of the sliding sleeve 8, forming a conical surface that is thicker at the top and thinner at the bottom. The bottom of the conical surface is connected to the top of the lower section and has the same outer diameter. The lower section is a frustum shape that is thicker at the top and thinner at the bottom. The sliding sleeve 8 slides with the fixed rod 3. Above the sliding sleeve 8 is a fixed sleeve 6 fixed to the outer wall of the fixed rod 3. The fixed sleeve 6 is a frustum shape that is thinner at the top and thicker at the bottom. The outer diameter of the bottom of the fixed sleeve 6 is adapted to the outer diameter of the upper surface of the upper section. The outer wall of the fixed rod 3 is fitted with an outer sleeve 4 that moves in the vertical direction. A top connecting plate 9 is fixed to the top of the outer sleeve 4. A lifting ring 10 for connecting with the hoisting mechanism is provided at the top of the top connecting plate 9. One end of the tension chain 11 is fixedly connected to the top connecting plate 9, and the other end is connected to the top of the leg plate. Multiple hooks 5 are hinged to the bottom of the outer sleeve 4 and evenly distributed around its axis. The bottom of the claw of the hook 5 has an upwardly inclined arc or slope.

[0025] The leg plate includes a first connecting plate 13, a second connecting plate 14, and a foot plate 12. The upper end of the first connecting plate 13 is fixed to the tension chain 11, and the lower end is fixed to the top of the second connecting plate 14. The connection is hinged to the crossbeam 1. The included angle between the first connecting plate 13 and the second connecting plate 14 is an obtuse angle. The foot plate 12 is fixed to the bottom of the second connecting plate 14 by a fixing plate 7. The included angle between the foot plate 12 and the second connecting plate 14 is a right angle or an obtuse angle.

[0026] In use: like Figures 1-3 As shown, before handling the coil or steel strand, the lifting device must first be placed in the hollow part of the coil or steel strand. The lifting mechanism, such as the gantry crane, lowers the entire lifting device into the central through hole of the coil. At this time, the hook 5 hooks the bottom of the fixed sleeve 6. When the two ends of the crossbeam 1 contact the top of the coil or steel strand, the lifting mechanism continues to descend. At this time, the outer sleeve 4 continues to descend, and then the hook 5 descends and moves to the lower end of the sliding sleeve 8. Then the lifting mechanism lifts upward, and the hook 5 moves upward with the sliding sleeve 8 until the top of the sliding sleeve 8 is in contact with the bottom of the fixed sleeve 6. The hook 5 can no longer hook the fixed sleeve 6 and continues to lift upward, thereby straightening the extension chain 11 and causing the leg plate to swing. The foot plate 12 is exactly at the bottom of the coil or steel strand. After that, the lifting mechanism continues to lift and hoist the coil or steel strand. After being hoisted to the designated position, the hoisting mechanism descends until the coil or steel strand coil lands. At this point, the tension chain 11 no longer applies tension to the leg plates, and the leg plates, under the action of gravity, become two foot plates 12 close together. At this time, the hoisting mechanism drives the outer sleeve 4 to continue descending until the hook 5 hooks the bottom of the fixed sleeve 6. The hoisting mechanism then lifts the lifting device upwards, completing one cycle of action.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A lifting device, characterized in that, The device includes a crossbeam, a connecting mechanism fixed at the center of the crossbeam, the top of the connecting mechanism being connected to the output end of the hoisting mechanism, and two legs hinged to the crossbeam at its two ends. The top of the legs is connected to the upper part of the connecting mechanism via a tension chain. The lower part of the legs is used to pass through the central through hole of the wire coil or steel strand coil, and the bottom of the legs has a foot plate for supporting the bottom of the wire coil or steel strand coil. The connecting mechanism includes a fixed rod vertically fixed above the crossbeam; the outer wall of the fixed rod is fitted with an outer sleeve that moves vertically therewith, the tension chain is connected to the outer sleeve, and the bottom of the outer sleeve is hinged with a plurality of hooks evenly distributed around its axis; the bottom of the fixed rod is fitted with a sliding sleeve located above the crossbeam, the sliding sleeve slidingly engaging with the fixed rod, and the upper part of the sliding sleeve is a fixed sleeve fixed to the outer wall of the fixed rod, the fixed sleeve being a frustum shape that is thinner at the top and thicker at the bottom, the sliding sleeve being a frustum shape that is thicker at the top and thinner at the bottom, and the top outer diameter of the sliding sleeve matching the bottom outer diameter of the fixed sleeve.

2. The lifting device according to claim 1, characterized in that, The leg plate includes a first connecting plate, a second connecting plate, and a foot plate. The upper end of the first connecting plate is fixed to the tension chain, and the lower end is fixed to the top of the second connecting plate. The connection is hinged to the crossbeam. The angle between the first connecting plate and the second connecting plate is an obtuse angle. The foot plate is fixed to the bottom of the second connecting plate by a fixing plate. The angle between the foot plate and the second connecting plate is a right angle or an obtuse angle.

3. A lifting device according to claim 1, characterized in that, The bottom of the claw portion of the hook has an upwardly sloping arc or slope.

4. A lifting device according to claim 1, characterized in that, The top end of the outer sleeve is fixed with a top connecting plate, and the top end of the top connecting plate is provided with a lifting ring for connecting with the hoisting mechanism. The tension chain is fixedly connected to the top connecting plate.

5. A lifting device according to claim 1, characterized in that, The sliding sleeve has a stepped frustum structure, divided into an upper section and a lower section. The outer diameter of the upper plane of the upper section is adapted to the outer diameter of the bottom of the fixed sleeve. The side wall of the upper section is inclined in the axial direction of the sliding sleeve to form a conical surface that is thicker at the top and thinner at the bottom. The bottom of the conical surface is connected to the top of the lower section and has the same outer diameter.

6. A lifting device according to claim 1, characterized in that, Bottom pads are fixed at both ends of the crossbeam.

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