A steel structure hoisting self-unloading type shackle device and hoisting method

Abstract

The application relates to the technical field of steel structure installation, and provides a steel structure hoisting self-unloading type shackle device and a hoisting method, which comprise a shackle body, a contraction device, a pushing device and a fixing device; the contraction device and the pushing device are arranged on the two sides of the shackle body and are communicated; the pushing device comprises a fixing cylinder, a pushing plate and a first elastic piece; a first locking hole is arranged in the side wall of the fixing cylinder; the contraction device comprises a jacking rod and a second elastic piece; a second locking hole is arranged in the side wall of the jacking rod; the fixing device comprises a locking rod and a rope; the locking rod is inserted into the first locking hole and the second locking hole; and the rope pulls the locking rod to open the opening of the shackle body. The shackle body is automatically unhooked. The application is convenient to operate, reduces the risk of high-altitude operation of construction personnel, and improves construction efficiency.

Description

Technical Field

[0001] This invention belongs to the field of steel structure construction technology, specifically relating to a self-unloading shackle device and hoisting method for steel structures. Background Technology

[0002] Currently, compared with traditional concrete buildings, steel structure buildings have advantages such as high strength, light weight, and aesthetically pleasing design. Furthermore, steel components can be reused, reducing construction waste and promoting sustainable development in the construction industry. However, hoisting is unavoidable in steel structure construction. After hoisting, workers often need to use pre-installed steel ladders on the steel columns or walk at heights on the steel beams and trusses to unhook the steel structures. This method is time-consuming, labor-intensive, and makes it difficult to ensure the safety of construction workers. Summary of the Invention

[0003] To address the problems in the prior art, this application proposes a self-unloading shackle device and lifting method for steel structure hoisting, which reduces the risk of high-altitude operations for construction workers while improving the efficiency of crane use.

[0004] In a first aspect, the present invention proposes a self-unloading shackle device for steel structure hoisting, comprising: a shackle body, a retraction device, a pushing device, and a fixing device; the shackle body has an opening, and first pin holes are respectively provided on both sides of the opening; the shackle body is further provided with a retraction device and a pushing device communicating with the first pin holes on both sides of the opening; the pushing device includes a fixing cylinder and a pushing plate and a first elastic element disposed within the fixing cylinder; one end of the pushing plate faces the first pin hole, and the other end is connected to the first elastic element; the fixing cylinder... A first locking hole is provided through the side wall; the retraction device includes a top rod and a second elastic element, one end of the top rod is connected to the second elastic element, and the other end extends into or out of the fixing cylinder directly opposite the first pin hole; a second locking hole is provided through the side wall of the top rod; the fixing device includes a locking rod and a rope connected to the locking rod; the locking rod is inserted into the first locking hole and the second locking hole to fix the top rod to close the opening of the shackle body; the rope pulls the locking rod away from the first locking hole and the second locking hole to unlock the opening of the shackle body.

[0005] Furthermore, the pushing device also includes a limiting plate disposed inside the fixed cylinder, and the pushing plate and the first locking hole are located on the side of the limiting plate near the first pin hole.

[0006] Furthermore, there are multiple limiting plates, which are evenly and symmetrically distributed along the circumference of the fixed cylinder.

[0007] Furthermore, the shrinkage device also includes a sleeve; the top rod and the second elastic element are disposed inside the sleeve; one end of the second elastic element is fixedly connected to the sleeve.

[0008] Furthermore, a strip-shaped hole is provided on one side of the sleeve; the length direction of the strip-shaped hole is along the length direction of the top rod, and the retraction device also includes a handle, which passes through the strip-shaped hole and is connected to the top rod.

[0009] Furthermore, the first elastic element includes a first spring; the second elastic element includes a second spring.

[0010] Furthermore, the locking rod is a variable cross-section rod, and the cross-section of the locking rod gradually decreases from the end connected to the rope to the other end.

[0011] Furthermore, the shackle device also includes a sling; the sling is connected to the shackle body.

[0012] Furthermore, the first pin hole is coaxial with the push rod.

[0013] Secondly, the present invention also proposes a method for hoisting steel structures using the aforementioned self-unloading shackle device, comprising the following steps:

[0014] Place the shackle body on both sides of the lifting lug of the steel structure, so that the lug holes of the lifting lug are located between the two first pin holes at the opening of the shackle body;

[0015] Push the top rod of the retraction device so that it passes through the ear hole of the lifting ear plate and extends into the fixed cylinder of the pushing device. Use the top rod to close the opening of the shackle body and connect the shackle body to the lifting ear plate. At the same time, the top rod continues to extend into and compress the first elastic element until the second locking hole of the top rod is aligned with the first locking hole of the fixed cylinder.

[0016] Insert the locking rod of the fixing device into the first locking hole and the second locking hole to fix the top rod;

[0017] After the steel structure hoisting is completed, pull the rope connected to the locking rod to disengage the locking rod from the first locking hole and the second locking hole. The first elastic element and the second elastic element are reset, causing the top rod to retract and release the opening of the shackle body. The shackle body is then separated from the hoisting lug.

[0018] The beneficial effects of this invention are as follows: By setting a retraction device and a pushing device on both sides of the first pin hole of the shackle body, the top rod of the retraction device closes the opening of the shackle body, and the locking rod of the fixing device fixes the top rod, thus achieving safe hoisting of the steel structure; by pulling the rope on the ground, the locking rod can be pulled out, and under the reset of the first and second elastic elements, the top rod retracts and automatically unlocks the opening of the shackle body, thus achieving automatic unhooking of the shackle body. Automatic unhooking can be achieved on the ground, which is convenient to operate, reduces the risk of high-altitude operations for construction personnel, and improves construction efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the steel structure hoisting self-unloading shackle device of the present invention for hoisting steel structures.

[0020] Figure 2 This is a schematic diagram of the main structure of the steel structure hoisting self-unloading shackle device of the present invention.

[0021] Figure 3 for Figure 2 A side view of the shackle body and the fixing device.

[0022] Figure 4 for Figure 2 A three-dimensional structural diagram of the shrinkage device.

[0023] Figure 5 for Figure 2 A three-dimensional structural diagram of the jacking device.

[0024] Figure 6 This is a front view structural diagram of the fixing device of the present invention.

[0025] In the diagram: 1.1-Shackle body; 1.2-First pin hole; 2.1-Sleeve; 2.2-Strip hole; 2.3-Second elastic element; 2.4-Push rod; 2.5-Second locking hole; 2.6-Handle; 2.7-Connecting ring; 3.1-Fixing cylinder; 3.2-First elastic element; 3.3-Push plate; 3.4-Limiting plate; 3.5-First locking hole; 4.1-Locking rod; 4.2-Rope; 5.1-Self-unloading shackle device; 5.2-Hook; 5.3-Traditional shackle; 5.4-Sling; 5.5-Lifting lug; 5.6-Steel structure. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1-3 The steel structure hoisting self-unloading shackle device shown includes: shackle body 1.1, retraction device, jacking device and fixing device.

[0028] The shackle body 1.1 is an arc-shaped shackle with an opening, similar in shape to existing shackles. The difference lies in that the shackle body 1.1 has first pin holes 1.2 on both sides of the opening. The first pin holes 1.2 on both sides of the opening are coaxial. A retraction device and a pushing device, communicating with the first pin holes 1.2, are also provided on both sides of the opening of the shackle body 1.1. The shackle device also includes a sling; the sling is connected to the shackle body 1.1. The sling is used to connect to lifting equipment. The lifting equipment includes a crane hook.

[0029] like Figure 4 As shown, the retraction device includes a sleeve 2.1 and a push rod 2.4 and a second elastic element 2.3 disposed within the sleeve 2.1. The second elastic element 2.3 includes a second spring. One end of the push rod 2.4 is connected to the second elastic element 2.3, and the other end extends into or out of the fixing cylinder 3.1 directly opposite the first pin hole 1.2.

[0030] In this embodiment, the sleeve 2.1 is a square tube with an internal cavity, one end being open and the other end being closed. One end of the second spring is fixedly connected to the closed end of the sleeve 2.1, and the other end is connected to the first end of the push rod 2.4. To facilitate the connection of the second spring, a connecting ring 2.7 is also provided at the first end of the push rod 2.4, and the second spring is connected to the connecting ring 2.7. The second end of the push rod 2.4 extends out of the fixed cylinder 3.1, and a second locking hole 2.5 is provided through the side wall of the push rod 2.4 near the second end. The push rod 2.4 is a round rod, and the second locking hole 2.5 is arranged radially.

[0031] A slotted hole 2.2 is provided on one side of the sleeve 2.1; the length direction of the slotted hole 2.2 is along the length direction of the push rod 2.4. The retraction device also includes a handle 2.6, which passes through the slotted hole 2.2 and is connected to the push rod 2.4. The push rod 2.4 can be driven to move along its length direction through the handle 2.6.

[0032] like Figure 5 As shown, the jacking device includes a fixed cylinder 3.1, a jacking plate 3.3 disposed within the fixed cylinder 3.1, a limiting plate 3.4, and a first elastic element 3.2. One end of the jacking plate 3.3 faces the first pin hole 1.2, and the other end is connected to the first elastic element 3.2. A first locking hole 3.5 is provided through the side wall of the fixed cylinder 3.1. The jacking plate 3.3 and the first locking hole 3.5 are located on the side of the limiting plate 3.4 near the first pin hole 1.2. There are multiple limiting plates 3.4, which are evenly and symmetrically distributed along the circumference of the fixed cylinder 3.1. In this embodiment, there are two limiting plates 3.4, which are symmetrically fixed to the inner wall of the fixed cylinder 3.1. The distance between the two limiting plates 3.4 is less than the diameter of the jacking plate 3.3, thereby limiting the displacement of the jacking plate 3.3.

[0033] One end of the fixed cylinder 3.1 is open, and the other end is closed. The open end is positioned opposite the first pin hole 1.2. The first elastic element 3.2 includes a first spring. One end of the first spring is fixedly connected to the closed end of the fixed cylinder 3.1, and the other end is connected to the push plate 3.3. The limiting plate 3.4 is located between the push plate 3.3 and the closed end of the fixed cylinder 3.1. When the first spring is in its natural state, the push plate 3.3 is located on the side of the first pin hole 1.2 opposite to the limiting plate 3.4. When the push plate 3.3 is subjected to pressure from the push rod 2.4, the first spring is compressed, and the push plate 3.3 moves closer to the limiting plate 3.4 until it presses against the limiting plate 3.4. In this state, the first locking hole 3.5 is aligned with the second locking hole 2.5.

[0034] like Figure 6 As shown, the fixing device includes a locking rod 4.1 and a rope 4.2 connected to the locking rod 4.1. The end of the rope 4.2 can be suspended from the ground according to the site length, which is convenient for ground construction personnel to operate. The locking rod 4.1 is inserted into the first locking hole 3.5 and the second locking hole 2.5 to fix the top rod 2.4 to close the opening of the shackle body 1.1. The rope 4.2 is used to pull the locking rod 4.1 out of the first locking hole 3.5 and the second locking hole 2.5 to unlock the opening of the shackle body 1.1.

[0035] The locking rod 4.1 is a variable cross-section rod, with its cross-section gradually decreasing from the end connected to the rope 4.2 to the other end. Thus, when the locking rod 4.1 is inserted into the first locking hole 3.5 and the second locking hole 2.5, as the insertion depth increases, the side wall of the locking rod 4.1 is pressed and locked to the hole walls of the first locking hole 3.5 and the second locking hole 2.5.

[0036] In this embodiment, the central axes of the first pin hole 1.2, the push rod 2.4, the fixed cylinder 3.1, and the push plate 3.3 coincide.

[0037] Based on the same inventive concept, the present invention proposes a method for hoisting steel structures using the aforementioned self-unloading shackle device, comprising the following steps:

[0038] The shackle body 1.1 of this embodiment is placed on both sides of the lifting lugs 5.5 of the steel structure 5.6, so that the lug holes of the lifting lugs 5.5 are located between the two first pin holes 1.2 at the opening of the shackle body 1.1; each steel structure 5.6 is equipped with at least two lifting lugs 5.5, and each of the two lifting lugs 5.5 is provided with a shackle body 1.1. The shackle bodies 1.1 of the two self-unloading shackle devices 5.1 are connected by slings 5.4, and then a conventional shackle 5.3 is used to connect the slings 5.4 to the hooks 5.2 of the lifting equipment. After installation is completed, as shown... Figure 1 As shown.

[0039] Push the top rod 2.4 of the retraction device so that it passes through the ear hole of the lifting ear plate and extends into the fixed cylinder 3.1 of the pushing device. Use the top rod 2.4 to close the opening of the shackle body 1.1, so that the shackle body 1.1 is connected to the lifting ear plate and will not detach. At the same time, the top rod 2.4 continues to extend into and compress the first elastic element 3.2 until the second locking hole 2.5 of the top rod 2.4 is aligned with the first locking hole 3.5 of the fixed cylinder 3.1.

[0040] Insert the locking rod 4.1 of the fixing device into the first locking hole 3.5 and the second locking hole 2.5 to fix the top rod 2.4; in this state, the opening of the shackle body 1.1 is closed, the first spring is compressed, and the second spring is stretched.

[0041] After the steel structure hoisting is completed, the construction workers pull the rope connected to the locking rod 4.1, and the locking rod 4.1 can be pulled out from the first locking hole 3.5 and the second locking hole 2.5 on the ground. The first elastic element 3.2 and the second elastic element 2.3 reset, that is, while the first spring pushes the top rod 2.4 back, the second spring pulls back the top rod 2.4, accelerating the retraction of the top rod 2.4, so that the top rod 2.4 quickly retracts into the sleeve 2.1. The top rod 2.4 no longer closes the opening of the shackle body 1.1, and the shackle body 1.1 can be directly separated from the hoisting lug. Throughout the process, the construction workers do not need to perform high-altitude operations, reducing safety risks and improving shackle efficiency. It is very suitable for situations where multiple lifting points are set on a steel structure. Traditional methods require shackle operation for each lifting point one by one. The method of this embodiment can simultaneously pull the ropes of multiple lifting points on the same steel structure to perform shackle operation for multiple lifting points simultaneously, greatly improving construction efficiency.

[0042] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A self-unloading shackle device for steel structure hoisting, characterized in that, include: Shackle body, retraction device, pushing device, and fixing device; The shackle body has an opening, and first pin holes are respectively provided on both sides of the opening; a retraction device and a pushing device communicating with the first pin holes are also respectively provided on both sides of the opening of the shackle body. The pushing device includes a fixed cylinder, a pushing plate and a first elastic element disposed inside the fixed cylinder; one end of the pushing plate is directly opposite the first pin hole, and the other end is connected to the first elastic element; a first locking hole is provided through the side wall of the fixed cylinder; The retraction device includes a top rod and a second elastic element. One end of the top rod is connected to the second elastic element, and the other end extends into or out of the fixed cylinder directly opposite the first pin hole. A second locking hole is provided through the side wall of the top rod. The fixing device includes a locking rod and a rope connected to the locking rod; the locking rod is inserted into the first locking hole and the second locking hole to fix the top rod to close the opening of the shackle body; The rope pulls the locking rod away from the first locking hole and the second locking hole to unlock the opening of the shackle body; The retraction device further includes a sleeve; the top rod and the second elastic element are disposed inside the sleeve; one end of the second elastic element is fixedly connected to the sleeve; a strip-shaped hole is provided on one side of the sleeve; the length direction of the strip-shaped hole is along the length direction of the top rod; the retraction device further includes a handle, which passes through the strip-shaped hole and is connected to the top rod.

2. The steel structure hoisting self-unloading shackle device according to claim 1, characterized in that, The pushing device also includes a limiting plate disposed inside the fixed cylinder, and the pushing plate and the first locking hole are located on the side of the limiting plate near the first pin hole.

3. A steel structure hoisting self-unloading shackle device according to claim 2, characterized in that, There are multiple limiting plates, which are evenly and symmetrically distributed along the circumference of the fixed cylinder.

4. A steel structure hoisting self-unloading shackle device according to claim 1, characterized in that, The first elastic element includes a first spring; the second elastic element includes a second spring.

5. A steel structure hoisting self-unloading shackle device according to claim 1, characterized in that, The locking rod is a variable cross-section rod, and the cross-section of the locking rod gradually decreases from the end connected to the rope to the other end.

6. A steel structure hoisting self-unloading shackle device according to claim 1, characterized in that, The shackle device also includes a sling; the sling is connected to the shackle body.

7. A steel structure hoisting self-unloading shackle device according to claim 1, characterized in that, The first pin hole is coaxial with the top rod.

8. A method for hoisting a steel structure using the self-unloading shackle device for steel structure hoisting as described in claim 1, characterized in that, Includes the following steps: Place the shackle body on both sides of the lifting lug plate of the steel structure, so that the lug holes of the lifting lug plate are located between the two first pin holes at the opening of the shackle body; Push the top rod of the retraction device so that it passes through the ear hole of the lifting ear plate and extends into the fixed cylinder of the pushing device. Use the top rod to close the opening of the shackle body and connect the shackle body to the lifting ear plate. At the same time, the top rod continues to extend into and compress the first elastic element until the second locking hole of the top rod is aligned with the first locking hole of the fixed cylinder. Insert the locking rod of the fixing device into the first locking hole and the second locking hole to fix the top rod; After the steel structure hoisting is completed; Pulling the rope connected to the locking rod disengages the locking rod from the first and second locking holes, resets the first and second elastic elements, and retracts the top rod to unlock the opening of the shackle body, separating the shackle body from the lifting lug.

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