Auxiliary clamp for hoisting steel beam

Abstract

The utility model discloses a kind of auxiliary clamps for steel beam hoisting, the clamp includes I-beam hoisting clamp and side anti-skid clamp, I-beam hoisting clamp is made of four pieces of mirror image symmetry's hook plate, by the thread cooperation of screw rod and rotating column, rotating handle can drive hook plate mutually close or away, realize the firm clamping and loosening of I-beam before and after, the roller of hook plate inboard is convenient for placing operation.The L-shaped support arm of side anti-skid clamp is connected with the outside of hook plate, rotates rotating handle and drives screw to move in inner thread sleeve, so that the rubber pad of screw end head is closely attached to the outside of hook plate, forms left and right direction's anti-skid limit.The clamp is simple in structure, convenient to operate, can effectively improve the safety and stability of steel beam hoisting, suitable for hoisting operation of various specifications steel beam.

Description

Technical Field

[0001] This utility model relates to the field of steel beam hoisting clamps, and specifically to an auxiliary clamp for hoisting steel beams. Background Technology

[0002] In the construction of buildings, bridges, and other engineering projects, the hoisting of steel beams is a crucial and frequent construction step. Traditional steel beam hoisting methods typically involve directly binding the steel beam with wire ropes and then lifting it using hoisting equipment. However, this method has several drawbacks. Firstly, the wire ropes are in direct contact with the steel beam surface. During hoisting, the significant weight of the steel beam generates considerable friction between the ropes and the beam, easily leading to wire rope wear and breakage, posing serious safety hazards. It also causes scratches and abrasions to the beam surface, affecting its quality and subsequent use. Secondly, traditional hoisting methods struggle to securely fix the steel beam. During hoisting and movement, the steel beam is prone to swaying or sliding due to factors such as shifting center of gravity or external interference, increasing the difficulty and risk of the hoisting operation and potentially causing accidents that threaten the lives of construction workers. Therefore, developing an auxiliary clamping device for steel beam hoisting that can securely hold the steel beam, prevent slippage, and is easy to operate is of significant practical importance. Utility Model Content

[0003] The purpose of this utility model is to provide a technical solution for an auxiliary clamp for steel beam hoisting, thereby addressing the shortcomings mentioned in the background art. To overcome the drawbacks and defects described in the background art, this technical solution includes the following: It includes an I-beam, the upper surface of which is clamped with two sets of I-beam lifting clamps, and each of the I-beam lifting clamps is provided with two sets of front-to-back mirror-symmetrical side anti-slip clamps on the side away from each other. The I-beam hoisting clamp includes four hook plates arranged in a left-right mirror symmetrical arrangement, a central shaft rotatably connected to the left and right sides of the hook plates, and two rotating columns rotatably connected to the left and right sides of the hook plates. A threaded rod is installed between the rotating columns, and hook grooves for hooking the I-beam beam are opened on the front and back sides of the hook plates that are close to each other. The side anti-slip clamps all include an L-shaped support arm, an internally threaded sleeve fixed to the bottom end of the L-shaped support arm, and a screw rotatably disposed in the inner cavity of the internally threaded sleeve. A ball head is fixed to one end of the screw near the I-beam lifting clamp, and a rubber pad is movably connected to the outer surface of the ball head.

[0004] As a preferred embodiment of this utility model: each of the rotating columns has a through threaded hole, and the threads inside the threaded holes are arranged in a front-to-back mirror symmetrical arrangement. The outer ring of the lead screw has two sections of threaded teeth that are arranged in a front-to-back mirror symmetrical arrangement, which are used to drive the rotating columns to move closer or further apart after rotating the lead screw.

[0005] As a preferred embodiment of this utility model, each of the hook plates is rotatably connected to a roller on the side that is close to each other.

[0006] As a preferred embodiment of this utility model: a cylinder is connected to the rear end of the lead screw, and a crank handle runs through the inside of the cylinder.

[0007] As a preferred embodiment of this utility model, the I-beam lifting clamps are all arranged in a mirror-symmetrical manner with the central axis of the I-beam as the reference.

[0008] As a preferred embodiment of this utility model, the ends of the L-shaped support arms away from the screw are fixedly connected to the outer end faces of the hook plate.

[0009] As a preferred embodiment of this utility model: the L-shaped support arm and the hook plate are in a horizontal and vertical state, used to hook the left and right sides of the I-beam to prevent the I-beam from sliding to the left and right sides.

[0010] As a preferred embodiment of this utility model: the rubber pad has a spherical cavity inside for inserting and rotating the ball head, and a rotating handle passes through the end of the screw away from the ball head to drive the screw to rotate, and the side of the rubber pad away from the screw contacts the outer surface of the hook plate.

[0011] The technical effects and advantages provided by this utility model in the above technical solution are as follows: This auxiliary clamp for steel beam hoisting uses four mirror-symmetrical hook plates and a screw drive structure to quickly and securely clamp the front and rear of the I-beam. The threaded design of the screw and rotating column allows for adjustable clamping force to meet the hoisting needs of steel beams of different specifications. The rollers on the inner side of the hook plates reduce friction during placement, improving ease of operation. The L-shaped support arm and screw structure of the side anti-slip clamp, through rotating the rotating handle, causes the rubber pad to tightly fit against the outer side of the hook plate, forming a left-right anti-slip limit, effectively preventing lateral slippage of the steel beam due to uneven weight distribution. The movable connection design between the rubber pad and the ball head further enhances the adaptability of the anti-slip mechanism. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0013] Figure 1 A schematic diagram showing the lifting clamps holding the I-beams in place. Figure 2 A schematic diagram of the overall structure of the I-beam hoisting clamp; Figure 3 This is a schematic diagram of a side anti-slip clamp.

[0014] Explanation of reference numerals in the attached figures: 1. I-beam; 2. I-beam lifting clamp; 2-1. Hook plate; 2-2. Central shaft; 2-3. Hook groove; 2-4. Roller; 2-5. Rotating column; 2-6. Handle; 2-7. Screw; 3. Side anti-slip clamp; 3-1. L-shaped support arm; 3-2. Rotating handle; 3-3. Internal threaded sleeve; 3-4. Screw; 3-5. Ball head; 3-6. Rubber pad. Detailed Implementation

[0015] To provide a clearer explanation and illustration of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are described below. The following description is merely exemplary and not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these drawings, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically illustrate the concept and principle of the embodiments of this disclosure and do not necessarily show the specific dimensions and proportions of the various embodiments of this disclosure. The technical solution of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.

[0016] Example 1: An auxiliary clamp for steel beam hoisting includes an I-beam 1. Two sets of I-beam hoisting clamps 2 are clamped on the upper surface of the I-beam 1. The I-beam hoisting clamps 2 are arranged in a left-right mirror symmetrical manner with the central axis of the I-beam 1 as the reference. The I-beam hoisting clamp 2 includes four left-right mirror symmetrical hook plates 2-1. A roller 2-4 is rotatably connected to one side of the hook plates 2-1 that is close to each other. A central shaft 2-2 is rotatably connected to one side of the hook plates that is close to each other. Two rotating columns 2-5 are rotatably connected to one side of the hook plates that is close to each other. The rotating columns 2-5 have threaded holes that are open from front to back. The threads inside the threaded holes are arranged in a front-back mirror symmetrical manner. A lead screw 2-7 is inserted between the two rotating columns 2-5. The outer ring of the lead screw 2-7 has two sections of threads that are front-back mirror symmetrical. Rotating the lead screw 2-7 can drive the rotating columns 2-5 to move closer or further apart. The rear end of the lead screw 2-7 is connected to a cylinder, and a crank handle 2-6 is inserted through the cylinder. Hook grooves 2-3 are provided on the front and back sides of the hook plate 2-1 to hook the I-beam beam 1. Two sets of mirror-symmetrical side anti-slip clamps 3 are provided on the back and back sides of the I-beam lifting clamp 2. The L-shaped support arm 3-1 of the side anti-slip clamp 3 is fixedly connected to the outer end face of the hook plate 2-1 at the end away from the screw 3-4, and the L-shaped support arm 3-1 and the hook plate 2-1 are in a horizontal and vertical state. The bottom end of the L-shaped support arm 3-1 is fixed with an internal threaded sleeve 3-3. The screw 3-4 is rotatably installed in the inner cavity of the internal threaded sleeve 3-3. The end of the screw 3-4 near the I-beam lifting clamp 2 is fixed with a ball head 3-5. The outer surface of the ball head 3-5 is movably connected with a rubber pad 3-6. The rubber pad 3-6 has a spherical cavity for the ball head 3-5 to be inserted and rotated. The end of the screw 3-4 away from the ball head 3-5 passes through the rotating handle 3-2. The side of the rubber pad 3-6 away from the screw 3-4 is in contact with the outer surface of the hook plate 2-1. In use, the I-beam lifting clamp 2 hooks the I-beam beam 1 through the hook groove 2-3, and the crank handle 2-6 is turned to make the screw 2-7 drive the rotating column 2-5 to move, so that the hook plate 2-1 clamps the I-beam beam 1. Then the rotating handle 3-2 is turned to make the screw 3-4 drive the rubber pad 3-6 to abut against the outside of the hook plate 2-1 to prevent the I-beam beam 1 from sliding to the left and right.

[0017] Example 2: An auxiliary clamp for hoisting a steel beam, comprising an I-beam 1, with two sets of I-beam hoisting clamps 2 arranged symmetrically in a left-right mirror image on its upper surface. Each I-beam hoisting clamp 2 consists of four left-right mirror image hook plates 2-1, connected by a central shaft 2-2 and rollers 2-4. Two rotating columns 2-5 are rotatably connected to the hook plates 2-1 on their adjacent sides. The internal threaded holes of the rotating columns 2-5 engage with the threads of a lead screw 2-7. The rear end of the lead screw 2-7 has a handle 2-6. The hook plates 2-1 hook the I-beam 1 through hook grooves 2-3. The I-beam lifting clamp 2 has two sets of mirror-image side anti-slip clamps 3 on each side. One end of the L-shaped support arm 3-1 is fixed to the outer end face of the hook plate 2-1 and is horizontal and perpendicular to the hook plate 2-1. The other end is fixed to the internal threaded sleeve 3-3. The screw 3-4 is rotatably set inside the internal threaded sleeve 3-3. One end of the screw 3-4 has a ball head 3-5, which is connected to a rubber pad 3-6. The rubber pad 3-6 has a spherical cavity. The other end of the screw 3-4 has a rotating handle 3-2. During lifting, first hook the I-beam lifting clamp 2 onto the I-beam beam 1, and then turn the handle 2-6 to make the hook plate 2-1 clamp the I-beam beam 1. Then turn the rotating handle 3-2 to make the screw 3-4 push the rubber pad 3-6 to press tightly against the outer side of the hook plate 2-1, preventing the I-beam beam 1 from sliding left and right.

[0018] Example 3: An auxiliary clamp for steel beam hoisting, comprising an I-beam 1, with two sets of left-right mirror-symmetrical I-beam hoisting clamps 2 mounted on the upper surface of the I-beam 1. The four hook plates 2-1 of the I-beam hoisting clamp 2 are arranged in a left-right mirror configuration, connected by a central shaft 2-2 and rollers 2-4. Two rotating columns 2-5 are rotatably connected to the hook plates 2-1 at their close proximity. The threaded holes of the rotating columns 2-5 match the threads of the lead screw 2-7. A crank handle 2-6 is provided at the rear end of the lead screw 2-7. The hook plates 2-1 hook the I-beam 1 using hook grooves 2-3. The I-beam lifting clamp 2 has two sets of mirror-image side anti-slip clamps 3 on each side. One end of the L-shaped support arm 3-1 is fixed to the outside of the hook plate 2-1 and is horizontal and perpendicular to the hook plate 2-1. The other end is fixed to the internal threaded sleeve 3-3. The screw 3-4 rotates inside the internal threaded sleeve 3-3. One end of the screw 3-4 has a ball head 3-5, which is connected to a rubber pad 3-6 with a spherical cavity. The other end has a rotating handle 3-2. During the lifting operation, the I-beam lifting clamp 2 is hooked onto the I-beam 1. The rotating handle 2-6 is turned to make the hook plate 2-1 clamp the I-beam 1. Then, the rotating handle 3-2 is turned to make the screw 3-4 drive the rubber pad 3-6 to abut against the outside of the hook plate 2-1, preventing the I-beam 1 from sliding to the left and right during lifting.

[0019] Based on the above-described preferred technical solution, the workflow of this technical solution is explained as follows: The I-beam lifting clamp 2 is placed at a suitable position above the I-beam beam 1, aligning the hook groove 2-3 on the hook plate 2-1 with the edge of the upper surface of the I-beam beam 1. Since the I-beam lifting clamp 2 consists of four hook plates 2-1 arranged symmetrically in a left-right mirror image, and all I-beam lifting clamps 2 are arranged symmetrically in a left-right mirror image with respect to the central axis of the I-beam beam 1, the two sets of I-beam lifting clamps 2 can be initially placed at symmetrical positions on the upper surface of the I-beam beam 1. Simultaneously, the roller 2-4, which rotates and connects to the hook plates 2-1 on one side, can assist in sliding and reduce friction during placement, making the placement operation smoother. Then, the L-shaped support arm 3-1 of the side anti-slip clamp 3 is moved away from the end of the screw 3-4. The head is fixedly connected to the outer end face of the hook plate 2-1, and the L-shaped support arm 3-1 and the hook plate 2-1 are in a horizontal and vertical state, which is used to hook the left and right sides of the I-beam 1 to prevent it from sliding to the left and right sides. After the I-beam lifting clamp 2 is placed in place, the crank handle 2-6 in the cylinder connected to the rear end of the screw 2-7 is rotated. Since the rotating column 2-5 is provided with threaded holes that are open from front to back, and the threads inside the threaded holes are arranged in a front-to-back mirror symmetrical arrangement, and the outer ring of the screw 2-7 is provided with two sections of threaded teeth that are arranged in a front-to-back mirror symmetrical arrangement, when the crank handle 2-6 is rotated to drive the screw 2-7 to rotate, the rotating column 2-5 will move closer to each other, which will in turn drive the four hook plates 2-1 to move closer to each other, so that the hook groove 2-3 hooks the I-beam 1 more tightly, thereby achieving the clamping and fixing of the I-beam 1 from front to back.

[0020] After the I-beam hoisting clamp 2 clamps and fixes the I-beam beam 1 at the front and back, the side anti-slip clamp 3 is operated. The rotating handle 3-2, which passes through the end of the screw 3-4 away from the ball head 3-5, is rotated. Because the bottom end of the L-shaped support arm 3-1 is fixed with an internally threaded sleeve 3-3, and the screw 3-4 is rotatably positioned within the inner cavity of the internally threaded sleeve 3-3, rotating the rotating handle 3-2 will cause the screw 3-4 to move within the internally threaded sleeve 3-3. The ball head 3-5, which is fixed to the end of the screw 3-4 near the I-beam hoisting clamp 2, will... As the ball head 3-5 moves, the rubber pad 3-6, which is movably connected to the outer surface of the ball head 3-5, also moves. Since the rubber pad 3-6 has a spherical cavity inside for the ball head 3-5 to insert and rotate, the ball head 3-5 can rotate appropriately within the spherical cavity during movement to adapt to different angles of force. Continuing to rotate the rotating handle 3-2 causes the side of the rubber pad 3-6 away from the screw 3-4 to contact the outer surface of the hook plate 2-1 and generate a certain pressure. At this time, the structure formed by the L-shaped support arm 3-1 and the hook plate 2-1... The I-beam 1 will be hooked from both sides to prevent it from tilting or sliding due to uneven weight distribution. Once all the above operations are completed, confirming that the I-beam 1 is securely clamped and the side anti-slip clamps 3 are functioning properly, the hoisting operation can begin. During hoisting, the I-beam hoisting clamps 2 continuously maintain a firm grip on the front and rear of the I-beam 1, while the side anti-slip clamps 3 continuously prevent the I-beam 1 from sliding to the left or right, ensuring the safety of the hoisting process. And stability; after the hoisting operation is completed, in the reverse order of the above operation, first rotate the rotating handle 3-2 in the opposite direction, so that the screw 3-4 drives the rubber pad 3-6 away from the outside of the hook plate 2-1, and release the anti-slip restriction of the side anti-slip clamp 3 on the left and right sides of the I-beam 1. Then rotate the handle 2-6 in the opposite direction, so that the screw 2-7 drives the rotating column 2-5 away from each other, and then the hook plate 2-1 releases its grip on the I-beam 1. Finally, remove the I-beam hoisting clamp 2 and the side anti-slip clamp 3 from the I-beam 1.

[0021] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An auxiliary clamp for hoisting steel beams, comprising an I-beam (1), characterized in that: The upper surface of the I-beam (1) is clamped with two sets of I-beam lifting clamps (2), and two sets of side anti-slip clamps (3) are provided on the opposite sides of the I-beam lifting clamps (2). The I-beam lifting clamp (2) includes four hook plates (2-1) arranged symmetrically in the left and right mirrors, a central shaft (2-2) rotatably connected to the hook plates (2-1) on the left and right sides that are close to each other, and two rotating columns (2-5) rotatably connected to the hook plates (2-1) on the left and right sides that are close to each other. A screw rod (2-7) is provided through the rotating columns (2-5), and hook grooves (2-3) for hooking the I-beam beam (1) are opened on the front and back sides of the hook plates (2-1) that are close to each other. Each of the side anti-slip clamps (3) includes an L-shaped support arm (3-1), an internal threaded sleeve (3-3) fixed at the bottom of the L-shaped support arm (3-1), and a screw (3-4) rotatably disposed in the inner cavity of the internal threaded sleeve (3-3). A ball head (3-5) is fixed at one end of the screw (3-4) near the I-beam lifting clamp (2), and a rubber pad (3-6) is movably connected to the outer surface of the ball head (3-5).

2. The auxiliary clamp for steel beam hoisting according to claim 1, characterized in that: The rotating column (2-5) has a threaded hole that runs through the front and back, and the threads inside the threaded hole are arranged in a mirror image symmetrical arrangement. The outer ring of the lead screw (2-7) has two sections of threaded teeth that are mirror image symmetrical arrangement, which are used to drive the rotating column (2-5) to move closer or further apart after rotating the lead screw (2-7).

3. The auxiliary clamp for steel beam hoisting according to claim 1, characterized in that: Each of the hook plates (2-1) is rotatably connected to a roller (2-4) on one side that is close to the other.

4. The auxiliary clamp for steel beam hoisting according to claim 1, characterized in that: A cylinder is connected to the rear end of the lead screw (2-7), and a crank handle (2-6) runs through the inside of the cylinder.

5. The auxiliary clamp for steel beam hoisting according to claim 1, characterized in that: The I-beam hoisting clamps (2) are all set up in a mirror image symmetrically with the central axis of the I-beam (1) as the reference.

6. The auxiliary clamp for steel beam hoisting according to claim 1, characterized in that: The end of the L-shaped support arm (3-1) away from the screw (3-4) is fixedly connected to the outer end face of the hook plate (2-1).

7. The auxiliary clamp for steel beam hoisting according to claim 1, characterized in that: The L-shaped support arm (3-1) and the hook plate (2-1) are in a horizontal and vertical state, used to hook the left and right sides of the I-beam (1) to prevent the I-beam (1) from sliding to the left and right sides.

8. The auxiliary clamp for steel beam hoisting according to claim 1, characterized in that: The rubber pad (3-6) has a spherical cavity inside for the ball head (3-5) to be inserted and rotated. A rotating handle (3-2) passes through the end of the screw (3-4) away from the ball head (3-5) to drive the screw (3-4) to rotate. The side of the rubber pad (3-6) away from the screw (3-4) is in contact with the outer surface of the hook plate (2-1).

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