A release device for hoisting steel beams and columns.

Abstract

This utility model provides a release device for hoisting steel beams and columns, relating to the field of hoisting tool technology. It includes: a clamping plate comprising an upper plate, a connecting plate, and a lower plate, the connecting plate being connected between the upper and lower plates to form a groove for inserting a steel column lug; and a positioning pin, with positioning holes penetrating the groove on the clamping plate, the positioning pin engaging with the positioning holes. The advantages of this utility model are: by setting up the clamping plate, positioning pin, and release structure, all components work together, resulting in precise and efficient release action, eliminating the need for manual climbing to high hoisting positions, reducing the risks of working at heights, and improving construction safety; the positioning pin's rod tightly engages with the positioning hole, and the locking disc and anti-reverse pin provide double limiting, ensuring a stable connection throughout the steel column hoisting process; the movable frame allows for lifting and release of the positioning pin with minimal operating force, saving effort and ensuring reliability.

Description

Technical Field

[0001] This utility model relates to the field of hoisting tools, and in particular to a hook-off device for hoisting steel beams and columns. Background Technology

[0002] In modern building construction and industrial installation, steel column hoisting is a crucial step. Traditional steel column hoisting methods typically involve using hoisting plates. Specifically, the hoisting plates are clamped onto the lugs at both ends of the steel column, and then lifting equipment is used to lift, move, and position the steel column.

[0003] However, dismantling this traditional hoisting tool is extremely inconvenient. Once the steel column is hoisted and bearing load, the existing operating procedures require workers to ascend to the hoisting position and manually remove the hoisting clamps from the ear plates. This process has many drawbacks. Firstly, workers at the hoisting position are in a high position with a complex surrounding environment, facing significant safety risks, including falls from heights and accidental collisions. Secondly, the dismantling action is limited by site space and operating conditions, making it difficult to complete quickly, severely slowing down the entire construction progress and affecting the overall efficiency of the project. Utility Model Content

[0004] In view of this, the present invention provides a release device for hoisting steel beams and columns, which solves the technical problem in the prior art that workers need to go to the hoisting position to dismantle the hoisting tool after it has been hoisted.

[0005] An embodiment of this utility model provides a hook-off device for hoisting steel beams and columns, comprising: A clamping plate includes an upper plate, a connecting plate, and a lower plate, wherein the connecting plate is connected between the upper plate and the lower plate, forming a groove between the upper plate and the lower plate for inserting a steel column lug plate; The clamping plate has a positioning hole that passes through the upper and lower plates. The positioning hole passes through the groove. The positioning pin is inserted into the positioning hole. The steel column ear plate is inserted through the groove by the positioning pin, so that the steel column is connected to the clamping plate. The disengagement structure includes a support member, a movable frame, a pull rope, and a locking pin. The support member is disposed on the clamping plate. The movable frame is rotatably connected to the support member. One end of the movable frame is movably connected to the positioning pin, and the other end of the movable frame is connected to the pull rope. The locking pin is inserted into the other end of the movable frame away from the positioning pin and is connected to the pull rope. By pulling the pull rope along the length of the locking pin, the locking pin can be disengaged from the positioning pin. The movable frame is pulled and rotated by the pull rope, allowing the positioning pin to disengage from the clamping plate, thereby causing the steel column lug to disengage from the clamping plate.

[0006] Furthermore, an installation pin is also inserted through one end of the clamping plate, and lifting rings are movably connected to both ends of the installation pin. The lifting rings are used for lifting the clamping plate.

[0007] Furthermore, the positioning pin includes a pin rod and a second connector, the second connector being disposed at the upper end of the pin rod, and the pin rod being inserted into the positioning hole.

[0008] Furthermore, the movable frame includes a rotating sleeve, two steel bars, and two first connectors. Both steel bars are perpendicular to the outer wall of the rotating sleeve and connected to the rotating sleeve. The end of each steel bar away from the rotating sleeve is connected to one of the connectors. The two steel bars are arranged at an obtuse angle so that one steel bar of the movable frame can drive the other steel bar to swing and lift the positioning pin.

[0009] Furthermore, both the first connector and the second connector are nuts, and a pull ring is sleeved between the first connector and the second connector.

[0010] Furthermore, a locking disc is connected to the upper end of the pin, the diameter of which is larger than the diameter of the positioning hole, to limit the insertion limit position of the pin and the clamping plate.

[0011] Furthermore, a locking hole is provided on one end of the pin that extends outside the clamping plate, and the locking pin is inserted into the locking hole.

[0012] Furthermore, the support member includes a vertical pole and a rotating shaft, and the rotating sleeve is rotatably connected to the rotating shaft.

[0013] Furthermore, a limiting plate is connected to the end of the rotating shaft away from the upright, and the limiting plate prevents the rotating sleeve from sliding out along the axial direction of the rotating shaft.

[0014] Furthermore, one end of the pull rope is connected to a first connector of the movable frame, and the anti-reverse pin is connected to the outside of the pull rope via a collar.

[0015] The beneficial effects of the technical solution provided by the embodiments of this utility model are as follows: The unhooking device for steel beam and steel column hoisting of this utility model, through the setting of clamping plates, positioning pins and unhooking structures, with each component working together, achieves precise and efficient unhooking action, eliminating the need for manual climbing to the high hoisting position, eliminating the risks of working at heights and improving construction safety; the pin rod of the positioning pin fits tightly with the positioning hole, and the locking plate and anti-reverse pin provide double limit, ensuring a stable connection throughout the steel column hoisting process; the movable frame achieves the lifting and unhooking of the positioning pin with a small operating force, which is labor-saving and reliable. In addition, this device has strong compatibility and is suitable for hoisting various specifications of steel columns, with good versatility, which can significantly shorten the single hoisting cycle, helping the construction and industrial installation fields to improve hoisting operation efficiency and reduce labor costs and safety risks. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the overall structure of the unhooking device for hoisting steel beams and columns according to this utility model; Figure 2 This is a perspective view of the separation structure of the unhooking device for hoisting steel beams and columns according to this utility model; Figure 3 This is a top view of the unhooking device for hoisting steel beams and columns according to this utility model; Figure 4 This is a perspective view of the unhooking state in an embodiment of the unhooking device for hoisting steel beams and columns according to this utility model.

[0017] In the diagram: 1. Clamping plate; 101. Upper plate; 102. Connecting plate; 103. Lower plate; 2. Mounting pin; 3. Lifting ring; 4. Support component; 401. Upright pole; 402. Rotating shaft; 403. Limiting plate; 5. Movable frame; 501. Rotating sleeve; 502. Reinforcing bar; 503. First connector; 6. Positioning pin; 601. Pin rod; 602. Second connector; 603. Locking disc; 604. Anti-reverse hole; 7. Pull rope; 8. Anti-reverse pin; 9. Pull ring; 10. Positioning hole; 11. Collar. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings. The following description presents a preferred embodiment of several possible embodiments of this utility model, intended to provide a basic understanding of the utility model, but not intended to identify the key or decisive elements of the utility model or to limit the scope of protection sought.

[0019] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0020] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures. Also, it should be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale.

[0022] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Please refer to Figure 1 The present invention provides a release device for hoisting steel beams and columns, including a clamping plate 1, a positioning pin 6, and a release structure.

[0024] The clamping plate 1 consists of an upper plate 101, a connecting plate 102, and a lower plate 103. The connecting plate 102 is firmly welded between the upper plate 101 and the lower plate 103, forming a groove between the upper plate 101 and the lower plate 103. This groove matches the steel column ear plate, ensuring that the steel column ear plate can be inserted into the groove. More specifically, the clamping plate 1 is C-shaped. After the steel column ear plate is inserted into the clamping plate 1, the clamping plate 1 is hoisted. The steel column ear plate will be subjected to longitudinal force, thereby lifting the steel column.

[0025] Please refer to Figure 2 In this embodiment, the clamping plate 1 is provided with positioning holes 10 that pass through the upper plate 101 and the lower plate 103. The positioning holes 10 pass through the groove, and the positioning pin 6 is inserted into the positioning holes 10. In this way, the positioning pin 6 can pass through the steel column ear plate in the groove, so that the steel column is stably connected to the clamping plate 1, and a reliable lifting connection is achieved, laying a solid foundation for subsequent lifting operations.

[0026] Please refer to Figures 1 to 3 In this embodiment, the unhooking structure includes a support member 4, a movable frame 5, a pull rope 7, and a locking pin 8. The support member 4 is securely mounted on the clamping plate 1, providing a stable fulcrum for the movable frame 5. The movable frame 5 is rotatably connected to the support member 4, with one end hooked onto the positioning pin 6 and the other end tightly bound to the pull rope 7. The locking pin 8 is inserted into the end of the positioning pin 6 away from the movable frame 5 and is connected to the locking pin 8 through the pull rope 7, forming a connection for remote-controlled unhooking.

[0027] It should be noted that an installation pin 2 is installed through one end of the clamping plate 1, and the two ends of the installation pin 2 are movably connected to the lifting ring 3. The lifting ring 3 is forged from high-strength alloy material, with a smooth surface and no burrs. Its ring part has a large diameter, which facilitates the insertion of the lifting wire rope or hook. The movable connection between the installation pin 2 and the lifting ring 3 gives the lifting ring 3 a certain degree of freedom of angular adjustment, which can adapt to different lifting forces and ensure that the steel column is lifted smoothly in the initial stage of the lifting operation without the risk of swaying or shaking.

[0028] Please refer to Figure 2 In this embodiment, the positioning pin 6 includes a pin rod 601 and a second connector 602. The second connector 602 is welded and fixed to the upper end of the pin rod 601. The diameter of the pin rod 601 is precisely matched with the positioning hole 10. After insertion, the gap is extremely small, ensuring that the positioning pin 6 will not loosen or shift under stress, thus providing a continuous and stable connection force for the entire process of steel column hoisting.

[0029] In addition, by passing the anti-reverse pin 8 through the positioning pin 6 through one end of the clamping plate 1, the positioning pin 6 will not detach from the clamping plate 1.

[0030] Furthermore, the movable frame 5 includes a rotating sleeve 501, two steel bars 502, and two first connectors 503. The two steel bars 502 are vertically welded to the outer wall of the rotating sleeve 501 and are arranged at an obtuse angle to each other. When one of the steel bars 502 is swung by an external force, the other steel bar 502 can lift the positioning pin 6 by means of the lever effect generated by the obtuse angle, thereby triggering the disengagement action.

[0031] Each steel bar 502 has a first connector 503 firmly welded to the end furthest from the rotating sleeve 501, which serves as the foundation for subsequent connections with other components. Both the first connector 503 and the second connector 602 are made of standard nuts, and a pull ring 9 is fitted between them. The steel bars 502 and nuts are common materials found on construction sites, so the unhooking tool can be made by welding materials sourced locally.

[0032] It should be further explained that the pull ring 9 is made of high-strength spring steel wire, forming a closed loop structure. When installed, its ring body passes sequentially through the internal threaded holes of the first connector 503 and the second connector 602, forming a stable and flexible connection. When the pull ring 9 is subjected to tension, it can be evenly transmitted to the first connector 503 and the second connector 602, causing the movable frame 5 and the positioning pin 6 to move in tandem. Moreover, the nut material has high hardness and good wear resistance, and can maintain the reliability of the threaded connection even after repeated pulling.

[0033] In an optional embodiment, a locking disc 603 is welded to the upper end of the pin 601. The diameter of the locking disc 603 is larger than the diameter of the positioning hole 10. When the positioning pin 6 is inserted into the positioning hole 10 of the clamping plate 1, the locking disc 603 is in close contact with the upper surface of the clamping plate 1, which plays a clear limiting role, accurately controls the insertion limit position of the pin 601 and the clamping plate 1, and prevents the positioning pin 6 from being over-inserted and affecting the stability of the disengagement structure.

[0034] On the end of the pin 601 that extends to the outside of the clamping plate 1, there is a backstop hole 604. The internal thread of the backstop hole 604 is precisely matched with the external thread of the backstop pin 8. After the backstop pin 8 is screwed in, it can form a secondary locking guarantee from the outside of the positioning pin 6. When no unhooking operation is performed, it can effectively prevent the positioning pin 6 from being loosened by accidental disturbance, and ensure that the steel column is firmly connected throughout the hoisting process.

[0035] In another alternative embodiment, please refer to Figure 2 The support component 4 is assembled from the upright 401 and the rotating shaft 402. The upright 401 is made of thick-walled seamless steel pipe and is firmly welded to the outside of the lower plate 103 of the clamping plate 1 to ensure verticality and strength.

[0036] One end of the rotating shaft 402 is tightly inserted into the pre-made blind hole at the top of the upright 401 and fixed by welding, while the other end is smoothly exposed, providing precise rotational support for the rotating sleeve 501 of the movable frame 5.

[0037] In addition, a limiting plate 403 is welded to the end of the rotating shaft 402 away from the upright 401. The diameter of the limiting plate 403 is larger than the inner diameter of the rotating sleeve 501. When the movable frame 5 is installed on the rotating shaft 402, the limiting plate 403 fits tightly against the end face of the rotating sleeve 501, effectively preventing the rotating sleeve 501 from sliding out along the axial direction of the rotating shaft 402, ensuring that the position of each component of the unhooking structure is stable under frequent operation and is always in the best working condition.

[0038] In this embodiment, the pull rope 7 is made of high-strength fiber, which has high tensile strength and good flexibility. One end of it is secured to a first connector 503 of the movable frame 5 with a crimped rope buckle. The connection is coated with high-strength glue and reinforced with a metal buckle to ensure reliable transmission of tension.

[0039] The anti-reverse pin 8 is connected to the collar 11 outside the pull rope 7 via a cotter pin. The collar 11 is fitted over the pull rope 7. The cotter pin passes through the side hole of the anti-reverse pin 8 and the collar 11 to form a detachable connection, which allows the anti-reverse pin 8 to be pulled flexibly during the unhooking operation.

[0040] Please refer to Figure 1 and Figure 4 , Figure 4 for Figure 1The diagram shows the state of the steel column after the middle tension rope 7 is pulled. When the steel column needs to be hoisted, first insert the ear plates at both ends of the steel column into the grooves of the clamp plate 1, then insert the positioning pin 6 through the positioning hole 10, pass through the clamp plate 1 and the steel column ear plates in sequence, and then install the anti-reverse pin 8. At this time, the steel column is stably connected to the clamp plate 1, and the hoisting equipment can hook the lifting ring 3 to lift the steel column smoothly.

[0041] Once the steel column is hoisted to the target position and the unhooking device needs to be removed, a pulling force is applied to the pull rope 7 on the ground. The pull rope 7 first pulls the anti-reverse pin 8 laterally, causing it to disengage from the anti-reverse hole 604 of the positioning pin 6. Simultaneously, the pull rope 7 pulls the movable frame 5 to rotate around the rotation axis 402 of the support member 4. The steel bar 502 of the movable frame 5 swings and lifts the positioning pin 6. After being stressed, the positioning pin 6 disengages from the positioning hole 10, and the steel column ear plate can then be smoothly disengaged from the groove of the clamping plate 1, completing the unhooking. Throughout the entire process, the operator does not need to climb to the hoisting position and can remotely control the safe and efficient disassembly of the unhooking device, greatly improving the safety and efficiency of the hoisting operation.

[0042] In this document, the directional terms such as front, back, top, and bottom are defined based on the position of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that these are relative concepts and can vary depending on different methods of use and placement; the use of these directional terms should not limit the scope of protection claimed in this application.

[0043] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A decoupling device for hoisting a steel beam and a steel column, characterized in that, include: The clamp (1) includes an upper plate (101), a connecting plate (102) and a lower plate (103), wherein the connecting plate (102) is connected between the upper plate (101) and the lower plate (103) to form a groove for inserting a steel column lug plate between the upper plate (101) and the lower plate (103); Positioning pin (6), the clamping plate (1) is provided with positioning hole (10) that passes through the upper plate (101) and the lower plate (103) from top to bottom, the positioning hole (10) passes through the groove, the positioning pin (6) and the positioning hole (10) are inserted into each other, and the steel column ear plate inserted through the positioning pin (6) in the groove is connected to the clamping plate (1); The unhooking structure includes a support member (4), a movable frame (5), a pull rope (7), and a locking pin (8). The support member (4) is mounted on the clamping plate (1). The movable frame (5) is rotatably connected to the support member (4). One end of the movable frame (5) is movably connected to the positioning pin (6), and the other end of the movable frame (5) is connected to the pull rope (7). The locking pin (8) is inserted into the other end of the positioning pin (6) away from the movable frame (5), and the locking pin (8) is connected to the pull rope (7). By pulling the pull rope (7) along the length of the locking pin (8), the locking pin (8) can be pulled away from the positioning pin (6). The movable frame (5) is pulled and rotated by the pull rope (7), so that the positioning pin (6) can be released from the clamping plate (1), thereby causing the steel column ear plate to be released from the clamping plate (1).

2. The unhooking device for hoisting a steel beam and a steel column according to claim 1, characterized in that: One end of the clamping plate (1) is also connected to an installation pin (2), and the two ends of the installation pin (2) are movably connected to lifting rings (3), which are used for lifting the clamping plate (1).

3. The unhooking device for hoisting a steel beam and a steel column according to claim 1, characterized in that: The positioning pin (6) includes a pin rod (601) and a second connector (602). The second connector (602) is disposed at the upper end of the pin rod (601), and the pin rod (601) is inserted into the positioning hole (10).

4. The unhooking device for hoisting a steel beam and a steel column according to claim 3, characterized in that: The movable frame (5) includes a rotating sleeve (501), two steel bars (502) and two first connectors (503). The two steel bars (502) are perpendicular to the outer wall of the rotating sleeve (501) and connected to the rotating sleeve (501). The end of each steel bar (502) away from the rotating sleeve (501) is connected to a first connector (503). The two steel bars (502) are arranged at an obtuse angle so that one steel bar (502) of the movable frame (5) can drive the other steel bar (502) to swing and lift the positioning pin (6).

5. The unhooking device for hoisting a steel beam and a steel column according to claim 4, characterized in that: Both the first connector (503) and the second connector (602) are nuts, and a pull ring (9) is sleeved between the first connector (503) and the second connector (602).

6. The unhooking device for hoisting a steel beam and a steel column according to claim 3, characterized in that: The upper end of the pin (601) is also connected to a locking disc (603), the diameter of which is larger than the diameter of the positioning hole (10), and is used to limit the insertion limit position of the pin (601) and the clamp (1).

7. The unhooking device for hoisting a steel beam and a steel column according to claim 3, characterized in that: The pin (601) has a backstop hole (604) at one end that extends through the clamp (1), and the backstop pin (8) is inserted into the backstop hole (604).

8. The unhooking device for hoisting a steel beam and a steel column of claim 4, wherein: The support member (4) includes a pole (401) and a rotating shaft (402), and the rotating sleeve (501) is rotatably connected to the rotating shaft (402).

9. The unhooking device for hoisting a steel beam and a steel column of claim 8, wherein: A limiting plate (403) is connected to the end of the rotating shaft (402) away from the upright (401). The limiting plate (403) prevents the rotating sleeve (501) from sliding out along the axial direction of the rotating shaft (402).

10. The unhooking device for hoisting a steel beam and a steel column of claim 4, wherein: One end of the pull rope (7) is connected to a first connector (503) of the movable frame (5), and the anti-reverse pin (8) is connected to the outside of the pull rope (7) through a collar (11).

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