Multipurpose steel structure pre-splicing device

Abstract

The invention aims to provide a multipurpose steel structure pre-splicing device which comprises a lifting device, the lifting device comprises a first worm, a first mounting block and a supporting arm, and a steel structure on the supporting arm can be limited and fixed through stretching and retracting of a clamp, so that the stability of the steel structure during pre-splicing is guaranteed; the rotating device comprises a first sliding rail and a connecting frame, and the rotating device can rotate between the first sliding rail through the connecting frame, so that the inclination angle of the steel structure is matched, and different use requirements are met; and the limiting device comprises a second sliding rail, a second worm, a second mounting block, a third sliding rail, a third mounting block, a fourth mounting block, a gear and a clamping block, and the steel structure can be limited through cooperation of the third mounting block, the fourth mounting block and the clamping block, so that the steel structure is prevented from swinging, the stability of the steel structure during pre-assembly is guaranteed, and the welding precision is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of fixing fixtures, and in particular to a multi-purpose steel structure pre-joining device. Background Art

[0002] In the use of steel structures, in order to shorten the on-site assembly time and ensure the accuracy of assembly, some steel structures are often pre-assembled when the steel structures leave the factory, so that the scattered steel structures form steel structure components, thereby greatly shortening the on-site construction time of the steel structures. The existing pre-assembly method of steel structures is to hoist each steel structure in the factory through a hoisting device (gantry crane, etc.), and then wait for welding and fixing. During the welding process, however, since the hoisting device mostly uses flexible connections such as steel cables for hoisting, the workpiece is prone to swing and offset during a long period of hoisting, which affects the accuracy of welding, thereby affecting the effect of pre-assembly and affecting the stability of the steel structure.

[0003] For example, a bridge bearing disassembly bracket proposed in CN117513186A includes an assembly steel frame and a fixed platform bolted to the end of the assembly steel frame, a splicing assembly frame structure is fixed between the assembly steel frames; a support base is fixed to the lower part of the assembly steel frame; a positioning seat is fixed to the front side of the upper end of the support base, and an operating screw is movably installed inside the positioning seat; a mobile towing platform is supported on the surface of the fixed platform, and the operating screw is threadedly connected inside it; a flip ramp seat is installed on the rear hinge of the mobile towing platform; side extension limiting slide rail seat structures are installed on the left and right sides of the fixed platform; and a push-driven splicing frame structure is supported at the rear of the side extension limiting slide rail seat structure. The present invention uses the setting of the push-driven splicing frame structure to more conveniently and labor-savingly drive the heavier bridge bearing to move to the mobile towing platform, thereby increasing its safety during operation, but does not solve the above-mentioned problem.

[0004] The present invention can limit the steel structure by means of a limiting device, thereby preventing the steel structure from swinging during the hoisting process and ensuring the accuracy of the pre-assembly. Summary of the invention

[0005] To solve the above problems, the purpose of the present invention is to propose a multi-purpose steel structure pre-assembly device, which can limit the steel structure through a provided limiting device, thereby preventing the steel structure from swinging during the lifting process and ensuring the accuracy of pre-assembly.

[0006] The present invention provides a multi-purpose steel structure pre-assembly device, comprising a base plate, which is fixed on a ground moving device, a support frame is provided on the base plate, a lifting device is provided in front of the support frame, a rotating device is provided on both sides of the support frame, and a limiting device is provided on the rotating device.

[0007] Furthermore, the lifting device includes a first worm gear, a first mounting block and a support arm. The first worm gear is rotatably mounted at the upper and lower ends of the inner side of the support frame. Motors are provided on the bottom plate and the support frame to connect the first worm gear. The first mounting blocks are installed on the first worm gear at the upper and lower ends. The first mounting block is slidably mounted on the inner side of the support frame. The support arm is rotatably mounted on both sides of the first mounting block. The first mounting block is provided with a motor to connect the power of the support arm on one side.

[0008] Furthermore, the support arms on both sides are meshed and connected via toothed structures provided at the ends, evenly distributed clamping columns are provided on the support arms, and springs are provided below the clamping columns to connect with the support arms.

[0009] Furthermore, the rotating device includes a first slide rail and a connecting frame, the first slide rail is arranged on both sides above the bottom plate and on both sides above the support frame, and the connecting frame is installed between the first slide rails on the upper and lower sides.

[0010] Furthermore, the first slide rail is arc-shaped, and both ends of the connecting frame are arc surfaces that fit the first slide rail.

[0011] Furthermore, the limiting device includes a second slide rail, a second worm gear, a second mounting block, a third slide rail, a third mounting block, a fourth mounting block, a gear and a clamping block. The second slide rail is fixed to the connecting frame, the second worm gear is rotatably mounted on the connecting frame, a motor is provided on the connecting frame, the motor is dynamically connected to the second worm gear, the second mounting block is slidably mounted on the second slide rail, the second mounting block is also mounted on the second worm gear, the third slide rail is slidably mounted on the second mounting block, a cylinder is fixed on the second mounting block, the cylinder telescopic rod is connected to the third slide rail, the third mounting block is slidably mounted on the third slide rail, the fourth mounting block is rotatably mounted on the third mounting block, a motor is provided on the fourth mounting block, a gear is provided on the motor output shaft, and the clamping block is slidably mounted on the fourth mounting block.

[0012] Furthermore, the clamping block is provided with a rack, which is meshed with the gear.

[0013] Furthermore, a torsion spring is provided between the fourth mounting block and the third mounting block.

[0014] Beneficial effects: 1. The support arms on both sides are meshed and connected through the toothed structure at the end. The support arms are provided with evenly distributed clamping columns. Springs are provided under the clamping columns to connect with the support arms. The steel structure on the support arms can be limited and fixed by the extension and contraction of the clamping columns to ensure the stability of the steel structure during pre-assembly.

[0015] The first slide rails are arranged on both sides above the bottom plate and on both sides above the support frame. The connecting frame is installed between the first slide rails on the upper and lower sides. The connecting frame can be rotated between the first slide rails to match the inclination angle of the steel structure to adapt to different usage requirements.

[0016] The second worm is rotatably mounted on the connecting frame, the second mounting block is slidably mounted on the second slide rail, the third slide rail is slidably mounted on the second mounting block, a cylinder is fixed on the second mounting block, the cylinder telescopic rod is connected to the third slide rail, the third mounting block is slidably mounted on the third slide rail, the fourth mounting block is rotatably mounted on the third mounting block, a motor is provided on the fourth mounting block, a gear is provided on the motor output shaft, and the clamping block is slidably mounted on the fourth mounting block, and the steel structure can be limited by the cooperation of the third mounting block, the fourth mounting block and the clamping block, thereby preventing the steel structure from swinging, ensuring the stability of the steel structure during pre-assembly, and ensuring the accuracy of welding.

[0017] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 .

[0019] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 .

[0020] Figure 3 It is an exploded view of the present invention.

[0021] Figure 4 It is an exploded view of the lifting device of the present invention.

[0022] Figure 5 It is an exploded view of the limiting device of the present invention.

[0023] Figure numerals: base plate 1; support frame 2; first worm 3; first mounting block 4; support arm 5; clamping column 6; first slide rail 7; connecting frame 8; second slide rail 9; second worm 10; second mounting block 11; cylinder 12; third slide rail 13; third mounting block 14; fourth mounting block 15; gear 16; clamping block 17. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention.

[0025] The following describes a multi-purpose steel structure pre-joining device according to an embodiment of the present invention with reference to the accompanying drawings. Figure 1 - Figure 5As shown, the multi-purpose steel structure pre-assembly device includes a base plate, which is fixed on a ground moving device, a support frame is provided on the base plate, a lifting device is provided in front of the support frame, a rotating device is provided on both sides of the support frame, and a limiting device is provided on the rotating device.

[0026] In a specific embodiment: when in use, the multi-purpose steel structure pre-assembly device can be used in combination with multiple devices, and the use effect can be improved by arranging them face to face. When used in a face-to-face arrangement, in order to avoid mutual interference, no lifting device is provided on the steel structure pre-assembly device on one side.

[0027] like Figure 3 and Figure 4 As shown, the multi-purpose steel structure pre-splicing device includes a lifting device, which includes a first worm gear, a first mounting block and a support arm. The first worm gear is rotatably mounted at the upper and lower ends of the inner side of the support frame. Motors are respectively provided on the bottom plate and the support frame to connect the first worm gear. The first mounting block is installed on the first worm gear at the upper and lower ends. The first mounting block is slidably mounted on the inner side of the support frame. The support arm is rotatably mounted on both sides of the first mounting block. The first mounting block is provided with a motor to be dynamically connected to the support arm on one side. The support arms on both sides are meshed and connected through a toothed structure provided at the end. Uniformly distributed clamping columns are provided on the support arm, and springs are provided under the clamping columns to connect with the support arms.

[0028] In a specific embodiment: the steel structure is moved to the top of the support arm located below through a lifting device (generally, the long beam or bottom plate located at the bottom is placed first), and at the same time, an external control device is used to control the motor to drive the support arm to rotate, so that the support arms on both sides are opened, and then the steel structure is placed on the support arm, and the clamping column located below the steel structure will move and compress the spring. At the same time, the surrounding clamping columns that do not move will limit the steel structure placed on its own wall. At the same time, the steel structure and the support arm form a triangular structure, which improves the limitation of the steel structure and ensures stability during subsequent pre-assembly.

[0029] During lifting and lowering, the first worm gear located below is driven to rotate by controlling the motor, so that the first mounting block moves up and down, thereby adjusting the height of the support arm for more convenient pre-assembly.

[0030] When necessary (such as when the steel structure is a frame structure), the motor is controlled to drive the first worm gear located above to rotate, so that the first mounting block above moves downward, so that the support arm located above cooperates with the support arm located below to clamp and fix the steel structure to adapt to different usage scenarios.

[0031] like Figure 3As shown, the multi-purpose steel structure pre-assembly device includes a rotating device, which includes a first slide rail and a connecting frame. The first slide rail is arranged on both sides above the bottom plate and on both sides above the support frame. The first slide rail is arc-shaped. The connecting frame is installed between the first slide rails on the upper and lower sides. Both ends of the connecting frame are arc surfaces that fit the first slide rails.

[0032] like Figure 3 and Figure 5 As shown, the multi-purpose steel structure pre-splicing device includes a limiting device, which includes a second slide rail, a second worm gear, a second mounting block, a third slide rail, a third mounting block, a fourth mounting block, a gear and a clamping block. The second slide rail is fixed to the connecting frame, the second worm gear is rotatably mounted on the connecting frame, a motor is provided on the connecting frame, the motor is dynamically connected to the second worm gear, the second mounting block is slidably mounted on the second slide rail, the second mounting block is also mounted on the second worm gear, the third slide rail is slidably mounted on the second mounting block, a cylinder is fixed on the second mounting block, the cylinder telescopic rod is connected to the third slide rail, the third mounting block is slidably mounted on the third slide rail, the fourth mounting block is rotatably mounted on the third mounting block, a torsion spring is provided between the fourth mounting block and the third mounting block, a motor is provided on the fourth mounting block, a gear is provided on the motor output shaft, the clamping block is slidably mounted on the fourth mounting block, a rack is provided on the clamping block, and the rack is meshed with the gear.

[0033] In a specific embodiment: the steel structure is moved to the upper part of the support arm located below by a hoisting device (starting to assemble the short beam onto the long beam or the bottom plate), and at the same time, the cylinders of the two steel structure pre-assembly devices arranged face to face are contracted by an external control device, thereby driving the third slide rail to move, so that the fourth mounting blocks on the two steel structure pre-assembly devices clamp the steel structure front and back (in the process, the motor is driven by the external control device to rotate the second worm, thereby moving the second mounting block to avoid mutual interference), and then the motor is controlled to rotate by the control device, so that The gear is driven to rotate, so that the clamping block clamps the steel structure. During the clamping process, due to the weight of the steel structure itself and the joint clamping of the clamping blocks on both sides, the steel structure will not move due to the clamping process of the clamping block. On the contrary, the clamping process of the clamping block will drive the fourth mounting block and the third mounting block to move (during the process, if the steel structure is inclined with respect to the steel structure below, the clamping block will drive the fourth mounting block to rotate according to the shape of the steel structure, so as to match the inclination angle of the steel structure). When the clamping blocks of the two steel structure pre-assembly devices arranged face to face are all clamped on the steel structure, the steel structure can be fixed and limited. Specifically, the steel structure is prone to swing after hoisting. The swing is a circular arc motion with the end of the steel cable as the center. However, after being clamped by multiple clamps of different heights, since the third mounting block can only slide on the third slide rail, it can only move when multiple third mounting blocks slide the same distance. During the circular arc motion, the chord lengths of different radii are different, which makes it impossible for the steel structure to swing, that is, multiple clamps limit the steel structure.

[0034] At the same time, when the cylinder drives the third slide rail to move, the fourth mounting block abuts against the steel structure, thereby pushing the connecting frame to rotate, so that the clamping block and the fourth mounting block can fit the steel structure more closely to adapt to the inclination angle of the steel structure.

[0035] Working principle: When in use, the steel structure is moved to the top of the support arm below through the lifting device (generally, the long beam or bottom plate at the bottom is placed first), and at the same time, the motor is controlled by the external control device to drive the support arm to rotate, so that the support arms on both sides are opened, and then the steel structure is placed on the support arm, and the clamping column located below the steel structure will move and compress the spring. At the same time, the surrounding clamping columns that have not moved will limit the steel structure placed on its own wall. At the same time, the steel structure and the support arm form a triangular structure to improve the limit of the steel structure and ensure the stability during subsequent pre-assembly. Then the steel structure is moved to the top of the support arm below through the lifting device (start to assemble the short beam onto the long beam or bottom plate), and at the same time, the two cylinders of the steel structure pre-assembly device arranged face to face are contracted through the external control device, thereby driving the third slide rail to move. , so that the fourth mounting blocks on the two steel structure pre-splicing devices clamp the steel structure front and back (during the process, the motor is controlled by an external control device to drive the second worm to rotate, thereby moving the second mounting block to avoid mutual interference), and then the motor is controlled to rotate by the control device, thereby driving the gear to rotate, so that the clamping block clamps the steel structure. During the clamping process, due to the weight of the steel structure itself and the joint clamping of the clamping blocks on both sides, the steel structure will not move due to the clamping process of the clamping block. On the contrary, the clamping process of the clamping block will drive the fourth mounting block and the third mounting block to move (during the process, if the steel structure is inclined with the steel structure below, the clamping block will drive the fourth mounting block to rotate according to the shape of the steel structure, thereby matching the inclination angle of the steel structure). When the clamping blocks of the two face-to-face arranged steel structure pre-splicing devices are all clamped on the steel structure, the steel structure can be fixed and limited.

Claims

1. A multi-purpose steel structure pre-assembly device, comprising a bottom plate, the bottom plate is fixed on a ground moving device, a support frame is provided on the bottom plate, and the characteristics are: It also includes a lifting device arranged in front of the support frame, a rotating device arranged on both sides of the support frame, and a limiting device arranged on the rotating device.

2. A multi-purpose steel structure pre-assembly device as claimed in claim 1, characterized in that: The lifting device includes a first worm gear, a first mounting block and a support arm. The first worm gear is rotatably mounted at the upper and lower ends of the inner side of the support frame. A motor is provided on the bottom plate and the support frame to connect the first worm gear. The first mounting block is mounted on the first worm gear at the upper and lower ends. The first mounting block is slidably mounted on the inner side of the support frame. The support arm is rotatably mounted on both sides of the first mounting block. The first mounting block is provided with a motor to connect the power of the support arm on one side.

3. A multi-purpose steel structure pre-assembly device as claimed in claim 2, characterized in that: The support arms on both sides are meshed and connected via toothed structures provided at the ends; uniformly distributed clamping columns are provided on the support arms; and springs are provided below the clamping columns to connect with the support arms.

4. A multi-purpose steel structure pre-assembly device as claimed in claim 1, characterized in that: The rotating device comprises a first slide rail and a connecting frame. The first slide rail is arranged on both sides above the bottom plate and on both sides above the supporting frame. The connecting frame is installed between the first slide rails on the upper and lower sides.

5. A multi-purpose steel structure pre-assembly device as claimed in claim 4, characterized in that: The first slide rail is arc-shaped, and both ends of the connecting frame are arc surfaces that fit the first slide rail.

6. A multi-purpose steel structure pre-assembly device as claimed in claim 1, characterized in that: The limiting device includes a second slide rail, a second worm gear, a second mounting block, a third slide rail, a third mounting block, a fourth mounting block, a gear and a clamping block. The second slide rail is fixed to a connecting frame, the second worm gear is rotatably mounted on the connecting frame, a motor is provided on the connecting frame, the motor is dynamically connected to the second worm gear, the second mounting block is slidably mounted on the second slide rail, the second mounting block is also mounted on the second worm gear, the third slide rail is slidably mounted on the second mounting block, a cylinder is fixed on the second mounting block, the cylinder telescopic rod is connected to the third slide rail, the third mounting block is slidably mounted on the third slide rail, the fourth mounting block is rotatably mounted on the third mounting block, a motor is provided on the fourth mounting block, a gear is provided on the motor output shaft, and the clamping block is slidably mounted on the fourth mounting block.

7. A multi-purpose steel structure pre-assembly device as claimed in claim 6, characterized in that: The clamping block is provided with a rack which meshes with the gear.

8. A multi-purpose steel structure pre-assembly device as claimed in claim 6, characterized in that: A torsion spring is arranged between the fourth mounting block and the third mounting block.

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