A strand coil lifting device

Abstract

This utility model provides a steel strand coil lifting device, relating to the field of lifting device technology; it includes a main board with a lifting hole on its top; the lower end of the main board is movably fitted with a crossbeam assembly; symmetrically arranged on both sides of the main board are leg plates for inserting into the hollow interior of the steel strand coil, each leg plate including a vertical part and a horizontal part for supporting the steel strand coil, the top of the vertical part being fitted over the crossbeam assembly; the lower ends of the main board are respectively connected to the lower parts of the two vertical parts via connecting plates, and the two ends of the connecting plates are respectively hinged to the main board and the vertical parts; the top of the crossbeam assembly is fixed with limit blocks on the left and right sides of the vertical parts; when the horizontal parts of the leg plates are in a horizontal state, the distance between the outer edges of the two horizontal parts is greater than the inner diameter of the steel strand coil; the technical solution of this utility model solves the problem of the prior art using straps to fix the steel strand coil, which is cumbersome to operate and prone to slippage and tilting of the steel strand coil, causing easy wear on the outer surface of the steel strand during loading.

Description

Technical Field

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

[0002] Steel strand is a steel product made of multiple steel wires twisted together. It is widely used in various engineering fields such as bridges, power, water conservancy, construction, and road fencing, and is commonly used as a load-bearing cable, guy wire, reinforcing core, prestressed material, barrier cable, and ground wire. Steel strand coils are packaged steel strand products in coils, usually using I-beam reels or axially detachable coils for easy storage, transportation, and construction installation.

[0003] Steel strand coils are hollow cylinders and heavy. To prevent damage to the bottom packaging when the coils are placed vertically, padding blocks are typically used. The padding blocks and the outer packaging of the steel strand coil are then secured to the outside of the coil with ropes. Figure 1 As shown. There are two placement methods for steel strand coils during loading and unloading: vertical placement and horizontal placement. When vertical placement is used, a gantry crane is typically employed for lifting. The lifting method involves two symmetrically arranged straps securing the steel strand coil. The gantry crane hook engages the straps, lifting the coil and moving it to achieve the lifting purpose. Securely attaching the straps is very time-consuming, and the two straps must be perfectly symmetrical; otherwise, the steel strand coil is prone to slipping and tilting. Loading at an angle can easily wear down the outer surface of the steel strand. Therefore, a lifting device that can stably and conveniently lift steel strand coils is urgently needed. Utility Model Content

[0004] To address the aforementioned technical problems of insecurely securing the external straps of steel strand coils during lifting, leading to slippage and tilting during transport and subsequent wear on the steel strands during loading, this invention provides a steel strand coil lifting device. This invention primarily utilizes a sliding main plate to drive the connecting plate and its connected leg plates to rotate. The main plate slides to rotate the connecting plate until it is parallel to the coil, with the distance between the outer edges of the horizontal portions of the two leg plates being less than the inner diameter of the steel strand coil. At this point, the lifting device is placed into the hollow portion of the steel strand coil. The main plate then slides to rotate the connecting plate until it is perpendicular to the coil, with the distance between the outer edges of the horizontal portions of the two leg plates being greater than the inner diameter of the steel strand coil. At this point, the steel strand coil is placed on the horizontal portion of the leg plates, and the hook engages the lifting ring, thus achieving a stable lifting effect on the steel strand coil.

[0005] The technical means adopted in this utility model are as follows:

[0006] A steel strand coil lifting device includes a main board with a lifting hole at the top; the lower end of the main board passes through the middle of a crossbeam assembly and is movably engaged with the crossbeam assembly.

[0007] The main board has symmetrically arranged leg plates on both sides for inserting into the hollow interior of the steel strand coil. The leg plates are L-shaped and include a vertical part and a horizontal part located at the bottom of the vertical part for supporting the steel strand coil. The two horizontal parts extend outward. The top of the vertical part is fitted over the crossbeam assembly and has a gap between it and the crossbeam assembly for the leg plates to swing. Limit blocks are fixed to the top of the crossbeam assembly on the left and right sides of the vertical part. Both the main board and the crossbeam assembly are provided with pin holes for the pins to pass through. The lower ends of the main board are connected to the lower parts of the two vertical parts through connecting plates, and the two ends of the connecting plates are hinged to the main board and the vertical parts, respectively.

[0008] When the horizontal section is horizontal, the distance between the outer edges of the two horizontal sections is greater than the inner diameter of the steel strand coil, and at this time the two pin holes of the main board and the crossbeam assembly are aligned.

[0009] Furthermore, positioning blocks are fixed at both ends of the bottom of the crossbeam assembly, and the distance between the inner edges of the two positioning blocks is adapted to the outer diameter of the steel strand coil.

[0010] Furthermore, the crossbeam assembly includes a crossbeam and a crossbeam upright plate fixed to the bottom of the crossbeam, and the pin hole of the crossbeam assembly is provided on the crossbeam upright plate.

[0011] Furthermore, a motherboard positioning plate is fixed at the top of the crossbeam assembly where the motherboard passes through, and a motherboard positioning block is provided on the upper part of the motherboard. When the horizontal part is horizontal, the bottom of the motherboard positioning block abuts against the motherboard positioning plate.

[0012] Furthermore, the bottom outer edge of the horizontal section has an upwardly sloping surface.

[0013] Furthermore, the vertical part is hinged to the connecting plate via ear plates and pins.

[0014] Furthermore, the pin is attached to the motherboard or crossbeam assembly via a connecting rope.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. This utility model provides a steel strand coil lifting device. The lower end of the main board passes through the middle of the crossbeam assembly and is movably engaged with the crossbeam assembly. At the same time, the lower ends of both sides of the main board are respectively connected to the bottom of the vertical part of the leg plate through connecting plates. The sliding of the main board causes the connecting plates to change state, which in turn causes the leg plates to change state. This realizes the transformation from placing the lifting device in the hollow part of the steel strand coil, to placing the steel strand coil on the leg plate, and then to detaching the steel strand coil from the steel strand coil. It replaces the traditional binding method, increases work efficiency, realizes the smooth lifting or unloading of the steel strand coil, and greatly reduces the wear on the outer surface of the steel strand.

[0017] 2. Positioning blocks are fixed at both ends of the bottom of the crossbeam assembly. The distance between the two positioning blocks is adapted to the outer diameter of the steel strand coil, which can smoothly ensure that the crossbeam assembly is located exactly in the middle of the steel strand coil. During the hoisting process, it ensures that the steel strand coil will not tilt and achieves stable hoisting.

[0018] 3. The cooperation between the motherboard positioning plate and the motherboard positioning block can ensure that when the horizontal part of the waiting leg plate is horizontal, the two pin holes are exactly coaxial, which limits the downward stroke of the motherboard and ensures that the pins can successfully fix the motherboard and the crossbeam assembly.

[0019] Based on the above reasons, this utility model can be widely promoted in the fields of lifting tools and so on. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a schematic diagram of a steel strand coil structure in the background art.

[0022] Figure 2 This is a front view of a steel strand reel lifting device.

[0023] Figure 3 This is a rear view of a steel strand coil lifting device.

[0024] Figure 4 This is a diagram showing the motherboard after it has been lifted upwards.

[0025] In the diagram: 1. Main board; 2. Lifting hole; 3. Horizontal beam upright plate; 4. Pin hole; 5. Limit block; 6. Positioning block; 7. Horizontal beam; 8. Main board positioning plate; 9. Pin shaft; 10. Leg plate; 11. Connecting plate; 12. Ear plate; 13. Main board positioning block; 14. Pin. Detailed Implementation

[0026] 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.

[0027] like Figures 2-4 As shown, this utility model provides a steel strand coil lifting device, including a main board 1. The top of the main board 1 is provided with a lifting hole 2, which is used to directly connect a hook or a lifting ring. The lifting ring is connected to the hook. The lower end of the main board 1 passes through the middle of the crossbeam assembly and is movably engaged with the crossbeam assembly. Both the main board 1 and the crossbeam assembly are provided with pin holes 4 for pins 14 to pass through.

[0028] The main board 1 has symmetrically arranged leg plates 10 on both sides for inserting into the hollow interior of the steel strand coil. The leg plates are L-shaped and include a vertical part and a horizontal part located at the bottom of the vertical part for supporting the steel strand coil. The two horizontal parts extend outward and have an upward sloping surface at the bottom outer edge of the horizontal part. The top of the vertical part is fitted over the crossbeam assembly and has a gap between it and the crossbeam assembly for the leg plates 10 to swing. The lower ends of the main board 1 are connected to the lower parts of the two vertical parts by connecting plates 11, and the two ends of the connecting plates 11 are hinged to the main board 1 and the vertical part, respectively. The vertical part is hinged to the connecting plates 11 by ear plates 12 and pins 9.

[0029] The crossbeam assembly includes a crossbeam 7 and a crossbeam upright plate 3 fixed to the bottom of the crossbeam. The pin holes 4 of the crossbeam assembly are located on the crossbeam upright plate 3. Limiting blocks 5 are fixed to the left and right sides of the vertical section of the top of the crossbeam 7. Positioning blocks 6 are fixed to both ends of the bottom of the crossbeam upright plate 3, and the distance between the inner edges of the two positioning blocks 6 is adapted to the outer diameter of the steel strand coil. A mainboard positioning plate 8 is fixed to the top of the crossbeam 7 where the mainboard 1 passes through, and a mainboard positioning block 13 is provided on the upper part of the mainboard 1.

[0030] When the horizontal section is horizontal, the distance between the outer edges of the two horizontal sections is greater than the inner diameter of the steel strand coil. At this time, the two pin holes 4 of the main board 1 and the crossbeam assembly are aligned, the bottom of the main board positioning block 13 abuts against the main board positioning plate 8, and the pin 14 passes through the two pin holes 4 to fix the main board and the crossbeam upright plate 3. The pin 14 is hung on the main board 1 or the crossbeam assembly by a connecting rope.

[0031] In use: First, remove the pin 14, hook the lifting ring on the lifting hole 2, and the entire lifting device moves upward. During the upward movement of the main board 1, the lower end of the main board 1 rotates at the connection point with the connecting plate 11. The main board 1 slides upward until the connecting plate 11 and the main board 1 are parallel, and the horizontal parts of the two leg plates 10 approach each other. At this time, the distance between the outer edges of the two horizontal parts is less than the inner diameter of the steel strand coil. Then, place the two leg plates 10 into the hollow part of the steel strand coil and adjust the hook to make the main board as close to the center of the central control part as possible. Then, the entire lifting device moves downward. After the two leg plates 10 touch the ground, the main board 1 moves freely downward under the action of gravity, thereby driving the two leg plates 10 to reset. Its horizontal part changes from an inclined state to a horizontal state again and gradually moves to both sides, so that the horizontal part can support the bottom of the steel strand coil (because the steel strand coil has pads, most of its bottom is suspended). When the horizontal sections of the two leg plates 10 return to a horizontal position, the main board positioning plate 8 and the main board positioning block 13 will touch. At this point, the two pin holes 4 will become coaxial again, and then the pin 14 will pass through the two pin holes 4 to fix the main board 1 and the crossbeam assembly as one unit. Meanwhile, the two positioning blocks 6 will clamp the steel strand coil and adhere it to its outer wall. If it is not adhered, the entire lifting device position can be manually adjusted, as the lifting device is not under load at this time, making adjustment relatively convenient. Finally, the hook will lift the lifting device and the steel strand coil upwards for transfer, completing the transfer of the steel strand coil. When disassembling the lifting device, simply remove the pin 14 and lift the lifting device upwards.

[0032] 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 steel strand reel lifting device, characterized in that, Includes a motherboard, the top of which is provided with a lifting hole; the lower end of the motherboard passes through the middle of the crossbeam assembly and is movably engaged with the crossbeam assembly; The main board has symmetrically arranged leg plates on both sides for inserting into the hollow interior of the steel strand coil. The leg plates are L-shaped, including a vertical part and a horizontal part located at the bottom of the vertical part for supporting the steel strand coil. The two horizontal parts extend outward. The top of the vertical part is fitted over the crossbeam assembly, and there is a gap between the vertical part and the crossbeam assembly for the leg plates to swing. Limit blocks are fixed to the top of the crossbeam assembly on the left and right sides of the vertical part. Both the main board and the crossbeam assembly are provided with pin holes for pins to pass through. The lower ends of the main board are connected to the lower parts of the two vertical parts through connecting plates, and the two ends of the connecting plates are hinged to the main board and the vertical part, respectively. When the horizontal section is horizontal, the distance between the outer edges of the two horizontal sections is greater than the inner diameter of the steel strand coil, and at this time the two pin holes of the main board and the crossbeam assembly are aligned.

2. The steel strand reel lifting device according to claim 1, characterized in that, Positioning blocks are fixed at both ends of the bottom of the crossbeam assembly, and the distance between the inner edges of the two positioning blocks is adapted to the outer diameter of the steel strand coil.

3. The steel strand reel lifting device according to claim 1, characterized in that, The crossbeam assembly includes a crossbeam and a crossbeam upright plate fixed to the bottom of the crossbeam, and the pin hole of the crossbeam assembly is provided in the crossbeam upright plate.

4. A steel strand reel lifting device according to claim 1, characterized in that, A motherboard positioning plate is fixed at the top of the crossbeam assembly where the motherboard passes through, and a motherboard positioning block is provided on the upper part of the motherboard. When the horizontal part is horizontal, the bottom of the motherboard positioning block abuts against the motherboard positioning plate.

5. A steel strand reel lifting device according to claim 1, characterized in that, The bottom outer edge of the horizontal part has an upwardly sloping surface.

6. A steel strand reel lifting device according to claim 1, characterized in that, The vertical part is hinged to the connecting plate via an ear plate and a pin.

7. A steel strand reel lifting device according to claim 1, characterized in that, The pin is attached to the motherboard or the crossbeam assembly via a connecting rope.

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