Clamp holder for clamping large set square

Abstract

The invention discloses a clamp holder for clamping a large triangular plate, and belongs to the technical field of hoisting, towing and mooring of offshore large structures. Comprising a cross beam with a triangular frame, three corners of the cross beam are provided with clamps used for clamping triangular plates, the cross beam penetrates through the clamps and is rotationally connected with the clamps, the inner sides of the bottoms of the clamps are provided with supporting plates used for supporting the triangular plates, the tops of the clamps are provided with hoisting connecting holes used for being connected with a hoisting structure, and the inner side of the cross beam is fixedly provided with a supporting plate. A limiting screw capable of being adjusted up and down is arranged on the supporting plate and used for pressing the triangular plate. The characteristic that the clamps can rotate around the cross beam to be opened and closed is mainly utilized, the triangular plate can be enveloped in a loose state, synchronous clamping of the three clamps can be achieved when vertical force is applied through the sling, meanwhile, the triangular plate can be tightly clamped by rotating the limiting screw, design is scientific and reasonable, operation is convenient, and practicability is high.

Description

Technical Field

[0001] This invention relates to the field of hoisting, towing and mooring technology for large offshore structures, specifically a clamp for holding large triangular plates. Background Technology

[0002] In the lifting, towing, and mooring operations of large offshore structures, large triangular plates may be used for rigging connections. Due to their significant weight, manual handling is impossible, and even with forklifts, the plates often encounter obstacles during unhooking and threading due to size mismatches. Furthermore, large connecting triangular plates used in floating platform mooring systems are prohibited from having additional welded lifting points to avoid extending their service life and causing stress changes in the plate structure itself. This makes subsequent unhooking and rigging connection processes extremely inconvenient, resulting in low operational efficiency and high safety risks. Summary of the Invention

[0003] The purpose of this invention is to provide a clamp for holding large triangular plates. This invention can achieve good clamping of large triangular plates with the help of simple tools such as hand chain hoists. It is convenient to operate, simple to use and has low operation safety risks, thus solving the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A clamp for holding a large triangular plate includes a crossbeam with a triangular frame. Clamps for clamping the triangular plate are provided at the three corners of the crossbeam. The crossbeam passes through the clamps and is rotatably connected to them. A support plate for supporting the triangular plate is provided on the inner bottom of the clamps. A lifting connection hole is provided on the top of the clamps for connecting a lifting structure. A support plate is fixedly provided on the inner side of the crossbeam. An adjustable limit screw is provided on the support plate for pressing the triangular plate.

[0005] As a further preferred embodiment of the present invention: the three long sides of the crossbeam are composed of three long round steel tubes, and short round steel tubes that are not coaxial with the long round steel tubes are provided at the three corners of the crossbeam. The two ends of the short round steel tubes are welded to the long round steel tubes on both sides respectively. The clamp is provided with a rotating hole, and the short round steel tubes pass through the rotating hole and are rotatably connected to the rotating hole.

[0006] As a further preferred embodiment of the present invention: an internal threaded hole is provided at the center of the support plate, a limiting screw passes through the internal threaded hole and is threadedly connected to the internal threaded hole, and a washer is provided at the bottom of the limiting screw.

[0007] As a further preferred embodiment of the present invention: the lifting structure includes lifting shackles and slings, and each lifting connection hole is connected to a lifting shackle, and the slings pass through the three lifting shackles in sequence and are connected to the lifting tool.

[0008] As a further preferred embodiment of the present invention, the surface of the tray is provided with anti-slip texture.

[0009] Compared with the prior art, the beneficial effects of the present invention are: 1. The clamp rotation angle is adjustable, which can be used to fit different sizes of triangular plates. The limit screw can also be flexibly adjusted according to the thickness of the triangular plate to achieve tight clamping of triangular plates of different sizes. It has a wide range of applications. 2. The overall structure is simple, the processing cycle is short, and the construction cost is low. The long round steel tubes and limit screws of the crossbeam can be temporarily processed and replaced according to the actual situation to adapt to the triangular plates with larger size changes. 3. The supporting tools are simple. The three clamps can be synchronously clamped by relying on a hand-operated hoist and a single sling to connect three lifting shackles. The clamping action is highly consistent.

[0010] In conclusion, this gripper can be widely used in the lifting, towing, and mooring of large offshore structures, demonstrating its strong practicality. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a clamp for holding a large triangular plate according to the present invention; Figure 2 This is a schematic diagram of the clamping mechanism of a clamping device for holding a large triangular plate according to the present invention; Figure 3 This is a schematic diagram of the crossbeam and support plate of a clamp for holding a large triangular plate according to the present invention; Figure 4 This is a schematic diagram of the limiting screw of a clamp for holding a large triangular plate according to the present invention; Figure 5 This is a schematic diagram of the operation of a clamp for clamping a large triangular plate according to the present invention, showing the operation of preparing to clamp the triangular plate; Figure 6 This is a schematic diagram of the operation of a clamp for holding a large triangular plate according to the present invention after the triangular plate is clamped.

[0012] In the diagram: 1. Crossbeam; 1.1. Long round steel tube; 1.2. Short round steel tube; 2. Clamp; 2.1. Lifting connection hole; 2.2. Rotation hole; 2.3. Support plate; 3. Support plate; 3.1. Internal threaded hole; 4. Limiting screw; 4.1. Washer; 5. Triangular plate; 6. Lifting shackle; 7. Lifting sling. Detailed Implementation

[0013] 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. 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. Example 1

[0014] Please see Figure 1-6 This embodiment provides a clamp for holding a large triangular plate, including: a crossbeam 1, clamps 2, a support plate 3, and a limiting screw 4. The crossbeam 1 is a planar frame structure welded and spliced ​​from round steel tubes, and the overall planar frame is triangular. The clamps 2 are claw-shaped plate structures, with three clamps located at the three corners of the crossbeam 1. A rotating hole 2.2 is provided in the middle of the clamps 2, allowing for adjustment around the crossbeam 1. A hoisting connection is provided on the upper part of the clamps 2. Hole 2.1 is used for hoisting; the support plate 3 is a flat plate structure, located in the middle of the crossbeam 1, and welded to the crossbeam 1 to support the crossbeam 1. An internal threaded hole 3.1 is provided in the middle of the support plate 3. A limiting screw 4 is adapted to the internal threaded hole 3.1 in the middle of the support plate 3, that is, the limiting screw 4 passes through the internal threaded hole 3.1 and is threadedly connected to the internal threaded hole 3.1, allowing the limiting screw 4 to rotate up and down in a direction perpendicular to the support plate 3; to better achieve the clamping function, such as... Figure 4 as well as Figure 6 As shown, a washer 4.1 is welded to the bottom of the limiting screw 4. After the clamp 2 completes the clamping of the triangular plate 5, it rotates the limiting screw 4 to make the washer 4.1 at the bottom of the limiting screw 4 forcefully adhere to the triangular plate 5, thereby achieving a tight clamping of the triangular plate 5.

[0015] like Figure 3 As shown, the crossbeam 1 is a triangular planar frame structure welded together from three long round steel tubes 1.1 and three short round steel tubes 1.2. The short round steel tubes 1.2 are located at the three corner points of the triangular planar frame structure. The short round steel tubes 1.2 and the long round steel tubes 1.1 are not coaxial, which restricts the clamp 2 from moving axially along the short round steel tubes 1.2, ensuring that the clamp 2 rotates only around the short round steel tubes 1.2. The rotation hole 2.2 is adapted to the short round steel tubes 1.2 of the crossbeam 1, that is, the short round steel tubes 1.2 pass through the rotation hole 2.2 and are rotatably connected to the rotation hole 2.2, allowing the clamp 2 to rotate around the short round steel tubes 1.2. Figure 2As shown, the clamp 2 has a lifting connection hole 2.1 on its upper part, which is used to lift the structure. The clamp 2 has a support plate 2.3 at its bottom. The support plate 2.3 is a plate structure, which supports the weight of the triangle 5 after it is clamped. The upper surface of the support plate 2.3 has anti-slip texture to enhance the friction between it and the contact surface of the triangle 5, thereby preventing slippage. Figure 5 as well as Figure 6 As shown, the hoisting structure includes hoisting shackles 6 that are connected to three hoisting connection holes 2.1 respectively. After the hoisting connection holes 2.1 of the three clamps 2 are connected to the hoisting shackles 6, the three hoisting shackles 6 are connected in series with a sling 7 to carry force, so that the three clamps 2 rotate synchronously around the short round tube steel 1.2 of the crossbeam 1, thereby achieving synchronous clamping.

[0016] It should be noted that, as a routine operation, the sling 7 should be connected to a crane or a hand-operated hoist or other lifting tool to lift the triangular plate 5. The lifting tool is a conventional structure and will not be described in detail in this application.

[0017] In practical applications, firstly, use tools such as pry bars to lift the lower surface of the triangle 5 off the ground or raise it to leave sufficient clamping area, ensuring that the support plate 2.3 at the bottom of the clamp 2 can be effectively inserted. Then, manually control the three clamps 2 to rotate around the short round steel tube 1.2 of the crossbeam 1 at a certain angle, and adjust the three clamps 2 to the outside of the triangle 5 in sequence to complete the envelopment. Install three lifting shackles 6 into the lifting connection holes 2.1 on the upper part of the three clamps 2 respectively. Then use a single sling 7 to connect the three lifting shackles 6 in series. Use a hand chain hoist or other tools to provide vertical tension at the top of the sling 7. Tighten the hand chain hoist, and the three clamps 2 will rotate synchronously to clamp the triangular plate 5. Continue to tighten the hand chain hoist so that the clamps 2 and the triangular plate 5 are lifted off the ground. With the lower surface of triangle plate 5 at a certain height from the ground, manually rotate the limiting screw 4 so that the washer 4.1 at the lower part of the limiting screw 4 contacts the upper surface of triangle plate 5, leaving a certain preload. At this point, triangle plate 5 is tightly clamped. Finally, triangle plate 5 can be further raised according to actual project needs. After leaving sufficient working space, subsequent shackle, rigging, and other connection work can be carried out.

[0018] It should be noted that the above embodiments are only specific and clear descriptions of the technical solutions and features of this application. Solutions or features that are prior art or common knowledge to those skilled in the art will not be described in detail in the above embodiments.

[0019] Furthermore, the technical solutions of this application are not limited to the above embodiments. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A gripper for gripping a large gusset, characterized by, The frame of the crossbeam (1) is triangular, clamps (2) for clamping the triangular plate (5) are arranged at the three corners of the crossbeam (1), the crossbeam (1) penetrates the clamps (2) and is rotationally connected with the clamps (2), the bottom inner side of the clamp (2) is provided with a supporting plate (2.3) for supporting the triangular plate (5), the top of the clamp (2) is provided with a hoisting connecting hole (2.1) for connecting a hoisting structure, the inner side of the crossbeam (1) is fixedly provided with a supporting plate (3), the supporting plate (3) is provided with a limiting screw (4) which can be adjusted up and down for pressing the triangular plate (5).

2. The clamp according to claim 1, wherein The three long edges of the crossbeam (1) are composed of three long circular tube steels (1.1), short circular tube steels (1.2) which are different in axis from the long circular tube steels (1.1) are arranged at the three corners of the crossbeam (1), the two ends of the short circular tube steel (1.2) are respectively welded with the long circular tube steels (1.1) on the two sides, the clamp (2) is provided with a rotating hole (2.2), the short circular tube steel (1.2) penetrates the rotating hole (2.2) and is rotationally connected with the rotating hole (2.2).

3. The clamp according to claim 1, wherein The center of the supporting plate (3) is provided with an inner threaded hole (3.1), the limiting screw (4) penetrates the inner threaded hole (3.1) and is threadedly connected with the inner threaded hole (3.1), the bottom of the limiting screw (4) is provided with a gasket (4.1).

4. The clamp according to claim 1, wherein The hoisting structure comprises a hoisting shackle (6) and a sling (7), one hoisting shackle (6) is connected to each hoisting connecting hole (2.1), the sling (7) penetrates the three hoisting shackles (6) in sequence and is connected with a hoisting tool.

5. The clamp according to claim 1, wherein The surface of the supporting plate (2.3) is provided with anti-skid lines.

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