Small-support steel truss girder large-segment hoisting device with multi-hoisting-point cooperative control

Abstract

The utility model discloses a multi-hoisting-point cooperative control few-support steel truss girder large-segment hoisting device which comprises supports, a main cross beam arranged at the top of the supports, a fixing frame fixedly connected to the outer wall of the main cross beam, an auxiliary cross beam fixedly connected to the bottom of the fixing frame, a bearing plate slidably connected to the inner wall of the supports, and a mounting plate arranged at the bottom of the auxiliary cross beam. A sliding groove is formed in the inner wall of the support; a connecting rod is arranged on the inner wall of the mounting plate; a steel wire rope is arranged on the outer wall of the connecting rod; a connecting block is arranged at the bottom of the connecting rod; the small-support steel truss girder large-section hoisting device with the multi-hoisting-point cooperative control function has the advantages of being reasonable in structural design, capable of achieving multi-hoisting-point cooperation, small in hoisting tool pressure and the like, and therefore the problems and defects of an existing device are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel truss girder hoisting, in particular to a multi-hoisting-point coordinated controlled large-segment hoisting device for steel trusses with few supports. Background Art

[0002] Steel trusses are suitable for steel bridge construction due to their many advantages, such as high strength, uniform material, good plasticity and toughness, and good weldability. The overall structure is a beam-like structure, that is, it mainly bears bending moment and shear force; it consists of a braking connection system, bridge deck, supports and piers (abutments).

[0003] However, most of the steel truss lifting devices currently used only lift them through a single lifting point. The lifting devices bear a large weight and are prone to collapse after long-term use. They are unable to effectively and evenly distribute the overall weight of the steel truss.

[0004] In view of this, research and improvement are carried out on the existing problems, and a large-segment lifting device for steel trusses with few supports and coordinated control of multiple lifting points is provided. The device has a reasonable structural design, integrates multiple lifting point coordination, low lifting pressure and uniform force, reduces manpower and material resources, and greatly improves work efficiency. The purpose is to solve problems and improve practical value through this technology. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a large-segment lifting device for steel trusses with a few supports and coordinated control of multiple lifting points.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a multi-lifting-point coordinated controlled steel truss large-segment lifting device with few supports, comprising a support, a main beam is provided on the top of the support, a fixing frame is fixedly connected to the outer wall of the main beam, a secondary beam is fixedly connected to the bottom of the fixing frame, a load-bearing plate is slidably connected to the inner wall of the support, a mounting plate is provided at the bottom of the secondary beam, a hook is provided at the bottom of the mounting plate, a limiting hole is provided at the top of the hook, a slide groove is provided on the inner wall of the support, a connecting rod is provided on the inner wall of the mounting plate, a steel wire rope is provided on the outer wall of the connecting rod, a connecting block is provided at the bottom of the connecting rod, the bottom of the secondary beam is movably connected to the mounting frame, a winding rod is provided on the inner wall of the mounting frame, and a driving motor is provided on one side of the winding rod.

[0007] As a further description of the above technical solution:

[0008] The outer shape of the supporting plate is rectangular, the outer diameter of the supporting plate matches the inner diameter of the chute, and the supporting plate is detachable.

[0009] As a further description of the above technical solution:

[0010] The mounting frame, winding rod, and driving motor are provided with lifting devices, and the number of the lifting devices is two groups, and the two groups of lifting devices rotate synchronously.

[0011] As a further description of the above technical solution:

[0012] There are two groups of hooks, each of which has a horn-shaped appearance, and the top of the hook is about two to three centimeters away from the connecting block.

[0013] As a further description of the above technical solution:

[0014] A ground track is provided at the bottom of the bracket, and a roller is provided between the ground track and the bracket.

[0015] As a further description of the above technical solution:

[0016] Ground rollers are provided at the bottom of the supporting plate, and the number of the ground rollers is four.

[0017] The utility model has the following beneficial effects:

[0018] In the utility model, the working efficiency of the large-segment lifting device of the steel truss is greatly improved by combining the coordination of multiple lifting points, low pressure of the lifting device, and uniform force. The design of two sets of ox-horn hooks makes the lifting device have multiple lifting points, which can effectively distribute the overall weight of the steel truss, avoiding the traditional situation of only a single lifting point, which bears the weight of the steel truss and is prone to breakage after long-term use, thereby extending the service life. In addition, the detachable load-bearing plate also facilitates the subsequent lifting of the steel truss. After that, the lifter can place the steel truss on the surface of the load-bearing plate, ensuring the overall stability of the steel truss when the bracket moves, and avoiding shaking caused by wind during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a multi-lifting-point coordinated controlled large-segment lifting device for steel trusses with few supports proposed in the present invention;

[0020] Figure 2 This is a schematic diagram of the deployment of a multi-lifting-point coordinated controlled large-segment lifting device for steel trusses with few supports proposed in the present invention;

[0021] Figure 3 This is a hook diagram of a multi-lifting-point coordinated controlled large-segment lifting device for steel trusses with few supports proposed in the present invention;

[0022] Figure 4 This is a schematic diagram of a reeling device for a large-segment lifting device of a steel truss with few supports and coordinated control of multiple lifting points proposed in the present invention.

[0023] Legend:

[0024] 1. Bracket; 2. Main beam; 3. Fixed frame; 4. Secondary beam; 5. Load-bearing plate; 6. Mounting plate; 7. Hook; 8. Limit hole; 9. Slide; 10. Connecting rod; 11. Wire rope; 12. Connecting block; 13. Mounting frame; 14. Winding rod; 15. Drive motor. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections, indirect connections through an intermediate medium, or internal connections between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Reference Figure 1-4The utility model provides an embodiment: a multi-hanging point coordinated control, few-bracket steel truss large segment lifting device, including a bracket 1, a main crossbeam 2 is provided on the top of the bracket 1, a fixing frame 3 is fixedly connected to the outer wall of the main crossbeam 2, and a secondary crossbeam 4 is fixedly connected to the bottom of the fixing frame 3. A load-bearing plate 5 is slidably connected to the inner wall of the bracket 1 to bear the overall weight of the steel truss, relieve the pressure of the sling, and extend the service life of the sling. A mounting plate 6 is provided at the bottom of the secondary crossbeam 4, a hook 7 is provided at the bottom of the mounting plate 6, and a limited hole 8 is provided on the top of the hook 7 to place the lifting The rope provides multiple sets of lifting points for the lifting of the steel truss and shares the overall weight of the steel truss. The inner wall of the bracket 1 is provided with a slide groove 9 to facilitate the subsequent installation of the load-bearing plate 5. The inner wall of the mounting plate 6 is provided with a connecting rod 10, and the outer wall of the connecting rod 10 is provided with a wire rope 11. The bottom of the connecting rod 10 is provided with a connecting block 12. The bottom of the secondary crossbeam 4 is movably connected to a mounting frame 13, and the inner wall of the mounting frame 13 is provided with a winding rod 14. A driving motor 15 is provided on one side of the winding rod 14 to facilitate the upward movement of the steel truss and facilitate the subsequent insertion of the load-bearing plate 5 into the slide groove 9.

[0028] Specifically, the outer shape of the load-bearing plate 5 is rectangular, and the outer diameter of the load-bearing plate 5 matches the inner diameter of the slide 9. The load-bearing plate 5 is detachable, so that the steel truss can be placed on the surface of the load-bearing plate 5 during subsequent transportation to maintain the overall stability of the steel truss.

[0029] Specifically, the mounting frame 13, the winding rod 14, and the driving motor 15 are equipped with lifting devices. There are two sets of lifting devices, and the two sets of lifting devices rotate synchronously to facilitate the upward movement of the steel truss and facilitate subsequent staff to use a forklift to insert the load plate 5 into the slide 9.

[0030] Specifically, there are two groups of hooks 7, and the hooks 7 are horn-shaped. The top of the hook 7 is about two to three centimeters away from the connecting block 12, which is convenient for providing installation positions for multiple groups of slings, facilitating the subsequent lifting of the steel truss, so that the overall weight of the steel truss is shared by multiple groups of slings, avoiding a single sling from being subjected to greater pressure and causing breakage due to long-term use.

[0031] Specifically, a ground track is provided at the bottom of the bracket 1, and rollers are provided between the ground track and the bracket 1 to facilitate the transportation of the steel truss and increase the working range of the lifting device.

[0032] Specifically, ground rollers are provided at the bottom of the load-bearing plate 5 , and there are four groups of ground rollers, which cooperate with the ground track to assist the load-bearing plate 5 in bearing the steel truss, thereby preventing the bottom of the load-bearing plate 5 from being unsupported and causing overall bending or breakage, thereby improving the load-bearing capacity of the load-bearing plate 5 .

[0033] Working principle: When in use, the staff installs the slings at both ends of the steel truss respectively, and then hangs the other end of the sling in the limit hole 8, and then drives the motor 15 to control the winding rod 14 to rotate, so that the steel truss moves slowly upward. When the height of the steel truss exceeds the position of the slide groove 9, the staff uses a forklift to insert one side of the load-bearing plate 5 inward along the slide groove 9. After the load-bearing plate 5 is inserted, the drive motor 15 controls the winding rod 14 to rotate in the opposite direction, so that the steel truss can be placed on the surface of the load-bearing plate 5, which relieves the pressure on the sling and the wire rope 11 and extends its service life. At the same time, it also makes it convenient for the bracket 1 to maintain the overall stability of the steel truss during movement. The surface wind causes the steel truss to shake, causing a safety hazard.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-lifting point coordinated controlled large-segment steel truss lifting device with few supports, comprising a support (1), characterized in that: The top of the bracket (1) is provided with a main crossbeam (2), the outer wall of the main crossbeam (2) is fixedly connected to a fixing frame (3), the bottom of the fixing frame (3) is fixedly connected to a secondary crossbeam (4), the inner wall of the bracket (1) is slidably connected to a bearing plate (5), the bottom of the secondary crossbeam (4) is provided with a mounting plate (6), the bottom of the mounting plate (6) is provided with a hook (7), the top of the hook (7) is provided with a limiting hole (8), the inner wall of the bracket (1) is provided with a sliding groove (9), the inner wall of the mounting plate (6) is provided with a connecting rod (10), the outer wall of the connecting rod (10) is provided with a steel wire rope (11), the bottom of the connecting rod (10) is provided with a connecting block (12), the bottom of the secondary crossbeam (4) is movably connected to a mounting frame (13), the inner wall of the mounting frame (13) is provided with a winding rod (14), and one side of the winding rod (14) is provided with a driving motor (15).

2. The multi-lifting-point coordinated control, few-support steel truss large-segment lifting device according to claim 1 is characterized by: The outer shape of the supporting plate (5) is rectangular, the outer diameter of the supporting plate (5) matches the inner diameter of the sliding groove (9), and the supporting plate (5) is detachable.

3. The multi-lifting-point coordinated control, few-support steel truss large-segment lifting device according to claim 1 is characterized by: The mounting frame (13), the winding rod (14), and the driving motor (15) are lifting devices, and the number of the lifting devices is two groups, and the two groups of lifting devices rotate synchronously.

4. The multi-lifting-point coordinated control, few-support steel truss large-segment lifting device according to claim 1 is characterized by: The hooks (7) are provided in two groups. The hooks (7) are horn-shaped in appearance, and the tops of the hooks (7) are about two to three centimeters away from the connecting block (12).

5. The multi-lifting-point coordinated control, few-support steel truss large-segment lifting device according to claim 1 is characterized by: A ground track is provided at the bottom of the bracket (1), and a roller is provided between the ground track and the bracket (1).

6. The multi-lifting-point coordinated control, few-support steel truss large-segment lifting device according to claim 1 is characterized by: Ground rollers are provided at the bottom of the bearing plate (5), and the number of the ground rollers is four.

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