Steel grating flat steel hoisting balance beam capable of automatically adjusting balance state

Abstract

The utility model discloses a steel grating flat steel lifting balance beam capable of automatically adjusting the balance state, which comprises a beam body and a lifting lug fixed at the center position of the beam body, two ends of the beam body are slidably provided with lifting arms, the lifting arms are fixedly connected with the beam body through fixing structures, two sides of one end, far away from the beam body, of each lifting arm are provided with chains, and the chains are fixedly connected with the beam body through fixing structures. An allocating and transporting structure is arranged between the two chains at the same end, an end restraint strap is arranged on the allocating and transporting structure, a hanging pendulum is fixed to one end of the hanging arm, and the chains are installed on the hanging pendulum. The distances between the lifting points at the two ends and the ends of the flat steel are restrained to be equal, then the positions of the lifting points are finely adjusted, it is guaranteed that a spatial geometric object formed by the flat steel and the beam body after lifting is symmetrical, and therefore automatic balance adjustment is completed in the lifting process; and moreover, flat steel of different sizes, especially large sizes, can be allocated and transported, and the practicability of the flat steel transporting device is improved.

Description

Technical Field

[0001] This utility model relates to the field of steel structure production technology, and in particular to a steel grating flat steel hoisting balance beam that automatically adjusts its balance state. Background Technology

[0002] Flat steel lifting balance beam is a lifting tool specifically designed for lifting steel grating (also known as steel grid plate) or flat steel. It is mainly used to solve the problems of deformation, slippage or tilting of steel grating (especially large or heavy-duty grating steel plates) caused by uneven stress during the lifting process. It is usually made of high-strength alloy steel or I-beam / channel steel, which has sufficient rigidity and bending resistance. The top is connected to the crane hook, and the bottom is connected to the steel grating through chains or wire ropes.

[0003] During hoisting, it is necessary to strictly control the center of gravity of the flat steel to avoid tilting or slipping. Currently, most hoisting balance beams are determined by measuring the dimensions with a tape measure. Although this method is simple and effective, tape measures are not standard equipment for workers and require strict specifications to meet usage requirements. In most cases, visual estimation is chosen for hoisting. At the same time, due to issues such as the size (length) of the flat steel, the length of the balance beam can also have a certain impact on hoisting. To address these issues, we have proposed a steel grating flat steel hoisting balance beam that automatically adjusts its balance state. Utility Model Content

[0004] This application provides a steel grating flat steel lifting balance beam that automatically adjusts its balance state, solving the problem that the balance point cannot be determined and automatic balance adjustment cannot be completed during the transportation of flat steel lifting balance beams.

[0005] This application provides a steel grating flat steel lifting balance beam that automatically adjusts its balance state, including a beam body and a lifting lug fixed at the center of the beam body. Both ends of the beam body are slidably provided with lifting arms, which are fixedly connected to the beam body through a fixing structure. Chains are provided on both sides of the end of the lifting arm away from the beam body, and an adjustment structure is provided between the two chains at the same end. The adjustment structure is provided with an end constraint band.

[0006] Preferably, one end of the boom is fixed with a pendulum, and the chain is mounted on the pendulum.

[0007] Preferably, positioning holes are provided on both sides of the top of the pendulum, the chain passes through the positioning holes and extends to the top of the pendulum, the pendulum is provided with multiple fixing screw holes, and the chain is fixed in one of the fixing screw holes by fixing screws.

[0008] Preferably, both ends of the positioning hole are chamfered.

[0009] Preferably, the fixing structure includes a limiting plate disposed on one side of the beam, the limiting plate having a plurality of limiting holes, the boom having a limiting groove corresponding to the limiting plate, the limiting groove having a fixing hole corresponding to the limiting holes, and the limiting groove being fixed to the limiting plate by fixing bolts.

[0010] Preferably, the end constraint band includes a limiting band fixed to one side of the transport structure and a rope take-up frame on the other side, wherein one end of the limiting band passes through the rope take-up frame, the rope take-up frame is provided with a locking screw, and the limiting band is provided with a positioning mark.

[0011] Preferably, a positioning rope is also provided between the two transport structures.

[0012] Preferably, the transport structure is a suspension rope fixed to the two chains.

[0013] Preferably, the transport structure is a hanging plate fixed to the two chains.

[0014] Preferably, there are one or two beams.

[0015] As can be seen from the above technical solution, this application provides a steel grating flat steel lifting balance beam that automatically adjusts its balance state. In use, this application is installed on a crane hook via lifting lugs. The extension of the boom is adjusted and fixed according to the required length of the flat steel to be lifted. Then, the lifting structure is fitted onto the flat steel, with the end restraints contacting one end of the flat steel. After the lifting structure is moved to a point where it cannot move further, the chains at both ends are observed to be parallel. If they are not parallel, the end restraints at both ends are tightened or released simultaneously until the chains at both ends of the beam are parallel. Then, the crane is started for lifting. During the lifting process, because the end restraints at both ends adjust the lifting structure to be equidistant from both ends, the center of gravity of the flat steel is naturally aligned with the center of gravity of this application after lifting, completing the automatic balance adjustment and thus completing the lifting work.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. By setting up the beam and the boom, large flat steel pieces can be moved by adjusting the boom, which improves the practicality of the balance beam.

[0018] 2. By setting up the conveying structure and the end constraint band, the distance from the conveying structure to the end of the flat steel is constrained by the end constraint band, so that the distances from the two conveying structures to the end of the flat steel are equal. During the conveying process, the flat steel can be automatically adjusted to the balance position, which is simple and efficient.

[0019] In summary, this application ensures that the distance between the lifting points at both ends and the ends of the flat steel is equal by constraining them to be equal, and then fine-tunes the position of the lifting points to ensure that the spatial geometry formed by the flat steel and the beam is symmetrical after lifting. This allows for automatic balance adjustment during the lifting process. Furthermore, this application can be used to transport flat steel of different sizes, especially large sizes, thus improving its practicality. Attached Figure Description

[0020] To more clearly illustrate the technical solution of this application, the accompanying drawings used in the implementation examples will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a steel grating flat steel hoisting balance beam that automatically adjusts the balance state according to this utility model;

[0022] Figure 2 This is a schematic diagram of the installation structure of the limiting plate for the automatic adjustment and balance beam of the steel grating flat steel hoisting system proposed in this utility model.

[0023] Figure 3 This is a schematic diagram of a swing structure for an automatic balance adjustment beam for lifting flat steel gratings, as proposed in this utility model.

[0024] Figure 4 This is a schematic diagram of the hoisting plate installation structure of a steel grating flat steel hoisting balance beam that automatically adjusts the balance state according to the present invention;

[0025] Figure 5 This is an enlarged view of point A of the automatic adjustment and balance state of the steel grating flat steel hoisting balance beam proposed in this utility model;

[0026] Figure 6 This is an enlarged view of structure B of a steel grating flat steel hoisting balance beam that automatically adjusts its balance state, as proposed in this utility model.

[0027] Figure 7 This is a schematic diagram of the flat steel hoisting balance beam for automatically adjusting the balance state of steel grating flat steel proposed in this utility model.

[0028] In the diagram: 1 Beam, 2 Boom, 21 Limiting Groove, 22 Fixing Bolt, 3 Lifting Lug, 4 Lifting Swing, 5 Positioning Hole, 6 Chain, 61 Fixing Screw, 62 Fixing Screw Hole, 7 Lifting Rope, 8 Limiting Band, 81 Rope Reel, 82 Locking Screw, 9 Limiting Plate, 10 Limiting Hole, 11 Lifting Plate, 12 Positioning Rope. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0030] See Figure 1-6 This application discloses an automatic balance beam for lifting flat steel gratings. This beam is used for transporting flat steel gratings, ensuring balance during transport. It includes a beam body 1 and lifting lugs 3 fixed at the center of the beam body 1. The lifting operation is completed by adjusting the lifting lugs 3 using a crane hook. Both ends of the beam body 1 are slidably equipped with booms 2, which can slide along the beam body 1. When transporting larger flat steel gratings, it is not necessary to replace the balance beam; the booms 2 on both sides can be adjusted. It should be noted that the outward extension distance of the two booms 2 must be consistent. The booms 2 are fixedly connected to the beam body 1 through a fixed structure. After adjustment, the two booms 2 need to be fixed to ensure safe use. Chains 6 are provided on both sides of the boom 2 furthest from the beam body 1; that is, each boom 2 in this application has two chains 6, and this application contains a total of four chains 6. Chain 6, with a conveying structure between the two chains 6 at the same end. The conveying structure is located at the bottom of the flat steel and supports the flat steel. The conveying structure is equipped with end restraint straps. During use, first ensure that the release length of the end restraint straps at both ends is the same. The end restraint straps need to be pressed against the ends of the flat steel. When the conveying structure moves at one end of the flat steel, it stops because it is restrained by the end restraint straps. At this time, observe whether the chains at both ends of the beam 1 are parallel, that is, the distance between the two conveying structures is equal to the distance between the two chains 6. Adjustment is completed by loosening and retracting the end restraint straps, and then hoisting is carried out. Furthermore, a positioning rope 12 is also set between the two conveying structures. The positioning rope 12 is equidistant from the chains 6 at both ends. After adjustment, pull the positioning rope 12 to the conveying structure at the other end to quickly observe whether the position of the conveying structure is in place, and then make adjustments.

[0031] In this utility model, a pendulum 4 is fixed to one end of the boom 2. The pendulum 4 improves the strength of the end hoisting. The pendulum 4 is fixed to the boom 2 by bolts or welding. The chain 6 is installed on the pendulum 4 and completes the hoisting work on the pendulum 4.

[0032] In this utility model, positioning holes 5 are provided on both sides of the top of the pendulum 4. The chain 6 passes through the positioning holes 5 and extends to the top of the pendulum 4. Both ends of the positioning holes 5 are chamfered to facilitate the adjustment of the position of the chain 6. The chain 6 extends to the bottom of the pendulum 4 through the positioning holes 5 to complete the adjustment. The pendulum 4 is provided with multiple fixing screw holes 62. The chain 6 is fixed in one of the fixing screw holes 62 by fixing screws 61. By fixing the upper end of the chain 6 in different fixing screw holes 62, the purpose of extending different chains 6 can be achieved. When the boom 2 is extended, the chain 6 can also be extended appropriately, which is suitable for scenarios with different chain 6 lengths.

[0033] In this utility model, the fixing structure includes a limiting plate 9 set on one side of the beam 1. The limiting plate 9 is welded to the beam 1 and has multiple limiting holes 10 for fixing and positioning. The boom 2 is provided with a limiting groove 21 corresponding to the limiting plate 9. The boom 2 is sleeved on one end of the beam 1, and the limiting groove 21 is sleeved on the limiting plate 9. The limiting groove 21 is provided with fixing holes corresponding to the limiting holes 10. The limiting groove 21 is fixed to the limiting plate 9 by fixing bolts 22. When the boom 2 is adjusted to a suitable position, the boom 2 is fixed by fixing bolts 22 to complete the hoisting work of different sizes.

[0034] In this utility model, the end constraint band includes a limiting band 8 fixed to one side of the transport structure and a rope take-up frame 81 on the other side. One end of the limiting band 8 passes through the rope take-up frame 81, and the limiting band 8 retracts within the rope take-up frame 81 to achieve the purpose of releasing the limiting band 8. During transport, the limiting band 8 needs to be pressed against the end of the flat steel. Figure 7 As shown, to ensure that the two conveying structures are symmetrically distributed along the center of the flat steel after placement, in order to further improve accuracy, locking screws 82 are provided on the rope take-up frame 81, and positioning marks are provided on the limit belt 8. Each time the limit belt 8 is adjusted, it is necessary to ensure that the limit belts 8 at both ends are located on the same positioning marks, that is, to ensure the same release amount, and to fix them with locking screws 82. The setting of the limit belt 8 also facilitates the two chains 6 to open at a certain angle for conveying. Because of the setting of the limit belt 8, the conveying structure will not slide towards the middle of the flat steel, ensuring the safety of conveying.

[0035] In this utility model, the conveying structure is a lifting rope 7 fixed on two chains 6. During the lifting of flat steel, the lifting rope 7 can be used to lift the flat steel for transportation. The lifting rope 7 can fit tightly with the bottom and part of the side of the flat steel, and it is also convenient for workers to operate.

[0036] In this utility model, the transport structure is a hanging plate 11 fixed on two chains 6. In this application, the flat steel can also be transported by placing it on the two hanging plates 11.

[0037] In this utility model, there may be one or two beams 1. One beam 1 is suitable for handling small-sized and low-weight objects, while two beams 1 are suitable for handling large-sized and heavy objects.

[0038] As can be seen from the above technical solution, when using this application, it is installed on the crane hook via the lifting lug 3. The extension of the boom 2 is adjusted and fixed according to the required length of the flat steel to be lifted. Then, the transport structure is fitted onto the flat steel, and the end restraint straps are placed against one end of the flat steel. After the transport structure is moved to a position where it cannot move further, it is observed whether the chains 6 at both ends are parallel. If they are not parallel, the end restraint straps at both ends are tightened or released simultaneously. After the chains 6 at both ends of the beam 1 are parallel, the crane is started for transport. During the lifting process, since the end restraint straps at both ends adjust the transport structure to be equidistant from both ends, the center of gravity of the flat steel is naturally on the same vertical line as the center of gravity of this application after it is transported, thus completing the automatic balance adjustment and completing the transport work.

[0039] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope of this application is indicated by the claims.

[0040] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The embodiments of this application described above do not constitute a limitation on the scope of protection of this application.

Claims

1. A steel grating flat steel lifting balance beam that automatically adjusts its balance state, comprising a beam body (1) and a lifting lug (3) fixed at the center of the beam body (1), characterized in that: Both ends of the beam (1) are slidably provided with booms (2). The booms (2) are fixedly connected to the beam (1) through a fixed structure. Both sides of the boom (2) away from the beam (1) are provided with chains (6). A transport structure is provided between the two chains (6) at the same end. An end constraint band is provided on the transport structure.

2. The steel grating flat steel hoisting balance beam with automatic adjustment of balance state according to claim 1, characterized in that, One end of the boom (2) is fixed with a pendulum (4), and the chain (6) is installed on the pendulum (4).

3. The steel grating flat steel hoisting balance beam with automatic adjustment of balance state according to claim 2, characterized in that, The top two sides of the pendulum (4) are provided with positioning holes (5), the chain passes through the positioning holes (5) and extends to the top of the pendulum (4), the pendulum (4) is provided with multiple fixing screw holes (62), and the chain (6) is fixed in one of the fixing screw holes (62) by fixing screws (61).

4. The steel grating flat steel hoisting balance beam with automatic adjustment of balance state according to claim 3, characterized in that, Both ends of the positioning hole (5) are chamfered.

5. A steel grating flat steel hoisting balance beam with automatic adjustment of balance state according to claim 4, characterized in that, The fixing structure includes a limiting plate (9) set on one side of the beam (1), the limiting plate (9) is provided with a plurality of limiting holes (10), the boom (2) is provided with a limiting groove (21) corresponding to the limiting plate (9), the limiting groove (21) is provided with a fixing hole corresponding to the limiting hole (10), and the limiting groove (21) is fixed on the limiting plate (9) by fixing bolts (22).

6. The steel grating flat steel hoisting balance beam with automatic adjustment of balance state according to claim 4, characterized in that, The end constraint band includes a limiting band (8) fixed on one side of the transport structure and a rope take-up frame (81) on the other side, wherein one end of the limiting band (8) passes through the rope take-up frame (81), the rope take-up frame (81) is provided with a locking screw (82), and the limiting band (8) is provided with a positioning mark.

7. The steel grating flat steel hoisting balance beam with automatic adjustment of balance state according to claim 6, characterized in that, A positioning rope (12) is also installed between the two transport structures.

8. The steel grating flat steel hoisting balance beam with automatic adjustment of balance state according to claim 7, characterized in that, The transport structure is a suspension rope (7) fixed on the two chains (6).

9. A steel grating flat steel hoisting balance beam with automatic adjustment of balance state according to claim 7, characterized in that, The transport structure is a hanging plate (11) fixed on the two chains (6).

10. A steel grating flat steel hoisting balance beam with automatic adjustment of balance state according to claim 1, characterized in that, The beam (1) can be one or two.

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