Section steel hoisting fixture
By designing a steel lifting clamp for steel structure lifting, the double-sided locking of the steel is achieved using the structure of the fork arm and fork hook, the problems of cumbersome lifting and frequent accidents in the prior art are solved, and stable lifting and safe operation of the steel is achieved.
Patent Information
- Application Number
- CN202421930512.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-10
- Publication Date
- 2025-05-20
- Estimated Expiration
- 2034-08-10
AI Technical Summary
The prior art has problems such as cumbersome lifting and accidents are prone to occur during the lifting of steel structures. Especially when lifting on one side or opposite sides of the steel, it is easy to cause the lifting object to slide, roll over and flip, causing lifting injury accidents.
A steel lifting clamp is designed, including a first fork arm installed on one side and a second fork arm installed on the other side, and a first fork hook and a second fork hook are respectively installed. Through the sliding of the first slide groove and the second slide groove and the interaction between the first pin shaft and the second pin shaft, the double-side symmetric locking of the steel is achieved.
This steel lifting clamp can ensure the stability and balance of the steel, and is simple and convenient to operate, shorten the lifting time, save labor and mechanical costs, and reduce the occurrence of lifting injuries.
Smart Images
Figure CN222886628U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steel structure hoisting, and particularly relates to a section steel hoisting clamp. Background Art
[0002] The section steel in the field of steel structure construction has the characteristics of "many types, many specifications, and many material types", and there are many operations involving section steel hoisting during the project implementation. However, there is no special clamp for section steel hoisting in this field at present.
[0003] At present, lifting tongs are usually used for hoisting steel H-beams, T-beams and similar cross-section members, and single tongs, double tongs on one side or opposite sides are often used during the hoisting process.
[0004] Single tong or double tong hoisting on one side: Due to the structure of the lifting tongs, the clamping contact surface is small. Coupled with the side turning force generated by the lifted object during one-side hoisting, it is easy to cause the lifted object to slide and unhook, tip over and flip, resulting in continuous lifting injury accidents.
[0005] Double tong hoisting on opposite sides: Since the two tongs are not a structural whole and cannot form a balanced resultant force and synergy, especially for asymmetric hoisting, the lifting tongs are prone to slip when generating a certain deviation angle. Coupled with the lack of a sling with a suitable length for matching, the locking force is insufficient or cannot be locked tightly, resulting in the slipping of the lifted object, thus causing lifting injury accidents and bringing many inconveniences and accident injuries to the hoisting operation.
[0006] If the rope winding and bundling hoisting method is adopted, since the section edge of the section steel is sharp and easy to cut the rope, padding is also required. Coupled with the frequent hoisting of components, the operation is very cumbersome, greatly affecting the work efficiency, reducing the mechanical operation efficiency, and increasing the mechanical and labor costs. Content of the Utility Model
[0007] The purpose of the utility model is to overcome the defects of cumbersome hoisting and easy accidents in the prior art, and provide a section steel hoisting clamp which simultaneously symmetrically locks the section steel on both sides, ensures the stability and balance of the section steel, is simple and convenient to operate, greatly shortens the hoisting time, saves labor and mechanical costs, and prevents and reduces the occurrence of lifting injury accidents.
[0008] To achieve the above object, the utility model provides a steel section hoisting clamp, which includes a first fork arm installed on one side and a second fork arm installed on the other side. A first fork hook for clamping one side of the steel section is installed at the lower part of the first fork arm, and a second fork hook for clamping the other side of the steel section is installed at the lower part of the second fork arm; a first sliding groove is provided on the first fork arm, a second sliding groove is provided on the second fork arm, a first pin shaft is fixedly installed at one end of the first fork arm, a second pin shaft is fixedly installed at one end of the second fork arm, the second pin shaft slides along the inside of the first sliding groove, and the first pin shaft slides along the inside of the second sliding groove; the first pin shaft and the second pin shaft are far away from each other, so that the first fork hook and the second fork hook are close to each other to clamp the steel section.
[0009] Preferably, an open slot is provided in the middle of the first fork arm, and the second fork arm is inserted into the open slot and slides horizontally along the open slot.
[0010] Preferably, a reinforcing plate is installed inside the open slot.
[0011] Preferably, the diameters of the first pin shaft and the second pin shaft are smaller than the widths of the first sliding groove and the second sliding groove.
[0012] Preferably, the first sliding groove and the second sliding groove are annular, and both ends are arc-shaped, which are matched with the first pin shaft and the second pin shaft.
[0013] Preferably, the first fork arm is provided with a first pin hole, the first pin shaft is inserted into the first pin hole and is connected with interference fit; the second fork arm is provided with a second pin hole, the second pin shaft is inserted into the second pin hole and is connected with interference fit.
[0014] Preferably, anti-drop flanges are installed at both ends of the first pin shaft and the second pin shaft, and the anti-drop flanges are welded at both ends of the first pin shaft and the second pin shaft.
[0015] Preferably, it further includes a lifting ring. A chain is installed inside the lifting ring. The chain passes through the lifting ring, one end is connected with the first fork arm, and the other end is connected with the second fork arm.
[0016] Preferably, lifting lugs are provided on the upper parts of the first fork arm and the second fork arm. A lifting lug hole is provided on the lifting lug. A shackle is installed inside the lifting lug hole. The chain passes through the lifting lug hole through the shackle and is connected with the first fork arm and the second fork arm.
[0017] Compared with the prior art, the beneficial effect of the utility model lies in:
[0018] 1. The utility model: First, open the first fork arm and the second fork arm. The first pin shaft and the second pin shaft approach each other, causing the first fork arm and the second fork arm to move away from each other, so that the first fork arm and the second fork arm can be placed on both sides of the profiled steel. Secondly, clamp the profiled steel. One side of the profiled steel is inserted into the interior of the first fork hook, and the other side is inserted into the interior of the second fork hook to clamp both sides of the profiled steel. Thirdly, clamp the profiled steel tightly. The first pin shaft and the second pin shaft move away from each other, causing the first fork hook and the second fork hook to approach each other, thereby clamping the profiled steel tightly. Finally, operate the crane to lift the profiled steel and hoist the profiled steel to the required position.
[0019] 2. The utility model is provided with a first fork hook and a second fork hook that are symmetrical to each other, enabling it to simultaneously lock the profiled steel symmetrically on both sides and cooperatively in opposite directions, ensuring the balance and stability of the profiled steel during hoisting, and effectively avoiding frequent hoisting injury accidents caused by the unhooking, slipping hook, tilting, and overturning of the lifting tongs.
[0020] 3. During the hoisting process of the utility model, the inclined chain and the downward gravity of the profiled steel combine to generate a resultant force that causes the first pin shaft and the second pin shaft to approach each other. The first pin shaft and the second pin shaft approach each other to clamp the profiled steel, which is not prone to tipping over, thereby reducing the occurrence of accidents. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0022] Figure 1 It is a schematic structural diagram of a profiled steel hoisting clamp provided by the present utility model installed together with the profiled steel;
[0023] Figure 2 It is a front structural diagram of a profiled steel hoisting clamp provided by the present utility model;
[0024] Figure 3 It is a schematic structural diagram of the first fork arm and the first pin shaft installed together provided by the present utility model;
[0025] Figure 4 It is an exploded view of the first fork arm and the first pin shaft installed together provided by the present utility model;
[0026] Figure 5 It is a schematic structural diagram of the second fork arm and the second pin shaft installed together provided by the present utility model;
[0027] Figure 6This is an exploded view of the second fork arm and the second pin shaft provided by the utility model.
[0028] In the figure, it includes:
[0029] 1. First fork arm; 2. Second fork arm; 3. Section steel; 11. First fork hook; 21. Second fork hook; 12. First sliding groove; 22. Second sliding groove; 13. First pin shaft; 23. Second pin shaft; 16. Open slot; 14. Reinforcing plate; 15. First pin hole; 25. Second pin hole; 24. Anti - detachment flange; 4. Hoop; 5. Chain; 17. Lifting lug; 18. Lifting lug hole; 19. Shackle. Specific embodiments
[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are one embodiment of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present utility model.
[0031] Please refer to Figures 1 to 6 , the present utility model provides a section steel lifting clamp.
[0032] As Figure 2 shown, the section steel lifting clamp includes two parts, specifically: the first fork arm 1 installed on one side and the second fork arm 2 installed on the other side. It can be clearly seen in Figure 2 : There is an open slot 16 in the middle of the first fork arm 1. The open slot 16 can nearly wrap the second fork arm 2. So when in use, the second fork arm 2 is inserted into the inside of the open slot 16 and slides horizontally along the open slot 16, so that it can slide and adjust within a certain range, ensuring that the lifting clamp can be downwardly compatible for lifting according to the cross - sectional dimensions of the section steel 3 from large to small, making it have a certain versatility to improve the utilization rate.
[0033] Furthermore, when manufacturing the first fork arm 1 and the second fork arm 2, the second fork arm 2 can be processed first, and then the first fork arm 1 is processed. The thickness of the first fork arm 1 is twice the thickness of the second fork arm 2, and their heights and widths are the same.
[0034] As Figure 2 and Figure 1 shown, a first fork hook 11 for clamping one side of the section steel 3 is installed at the lower part of the first fork arm 1, and a second fork hook 21 for clamping the other side of the section steel 3 is installed at the lower part of the second fork arm 2; the first fork hook 11 and the second fork hook 21 cooperate with each other to clamp and fix the section steel 3.
[0035] AsFigure 2 As shown, the first fork arm 1 is provided with a first sliding groove 12, and the second fork arm 2 is provided with a second sliding groove 22. As Figure 3 shown, one end of the first fork arm 1 is fixedly provided with a first pin shaft 13. As Figure 4 shown, one end of the second fork arm 2 is fixedly provided with a second pin shaft 23. The second pin shaft 23 is installed inside the first sliding groove 12 and slides along the inside of the first sliding groove 12. The first pin shaft 13 is installed inside the second sliding groove 22 and slides along the inside of the second sliding groove 22.
[0036] As Figure 2 shown, when the first pin shaft 13 and the second pin shaft 23 move away from each other, the first fork hook 11 and the second fork hook 21 approach each other. One side of the profiled steel 3 is inserted into the first fork hook 11, and the other side is inserted into the second fork hook 21, thereby clamping the profiled steel 3.
[0037] As Figure 2 shown, a reinforcing plate 14 is installed inside the open groove 16. The reinforcing plate 14 connects the two first fork hooks 11 together, making the load-bearing capacity of the first fork arm 1 stronger and not weakened due to the opening of the open groove 16.
[0038] Since the first pin shaft 13 needs to slide inside the second sliding groove 22 and the second pin shaft 23 needs to slide inside the first sliding groove 12, the diameters of the first pin shaft 13 and the second pin shaft 23 are smaller than the widths of the first sliding groove 12 and the second sliding groove 22. In the specific design, the diameters of the first pin shaft 13 and the second pin shaft 23 are equal, and the widths of the first sliding groove 12 and the second sliding groove 22 are equal.
[0039] As Figure 3 and Figure 5 shown, the first sliding groove 12 and the second sliding groove 22 are annular, and both ends are arc-shaped, which match the first pin shaft 13 and the second pin shaft 23 to facilitate the internal sliding of the first pin shaft 13 and the second pin shaft 23.
[0040] As Figure 4 shown, the first fork arm 1 is provided with a first pin hole 15. The first pin shaft 13 is inserted into the first pin hole 15 and is connected with interference to prevent the axial movement of the first pin hole 15. Similarly, as Figure 6 shown, the second fork arm 2 is provided with a second pin hole 25. The second pin shaft 23 is inserted into the second pin hole 25 and is connected with interference to prevent the axial movement of the second pin hole 25.
[0041] Further, the lengths of the first pin shaft 13 and the second pin shaft 23 are greater than the thickness of the first fork arm 1. Further still, anti - detachment flanges 24 are installed at both ends of the first pin shaft 13 and the second pin shaft 23, and the anti - detachment flanges 24 are welded to both ends of the first pin shaft 13 and the second pin shaft 23; the anti - detachment flanges 24 have a larger diameter, and the anti - detachment flanges 24 are stuck on the sides of the first fork arm 1 and the second fork arm 2 to prevent the first pin shaft 13 and the second pin shaft 23 from coming out.
[0042] As Figure 3 and Figure 5 shown, lifting lugs 17 are provided on the upper parts of both the first fork arm 1 and the second fork arm 2, and lifting lug holes 18 are provided on the lifting lugs 17.
[0043] Further, as Figure 2 shown, some necessary accessories also need to be configured for the profiled steel lifting clamp, such as: a lifting ring 4, a chain 5 and a shackle 19. A chain 5 is installed inside the lifting ring 4. The chain 5 passes through the lifting ring 4, one end is connected to the first fork arm 1, and the other end is connected to the second fork arm 2.
[0044] Further still, a shackle 19 is installed inside the lifting lug hole 18, and the chain 5 passes through the lifting lug hole 18 through the shackle 19 and is connected to the first fork arm 1 and the second fork arm 2.
[0045] The usage and installation steps of the profiled steel lifting clamp are as follows:
[0046] Step S1: Operate the crane to hoist the profiled steel lifting clamp to the position of the profiled steel 3 to be hoisted. Lower the lifting ring 4 until the first fork arm 1 and the second fork arm 2 are naturally loose and can be freely separated, and separate the first fork arm 1 and the second fork arm 2.
[0047] Step S2: Select a good lifting point and clamp the profiled steel 3; one side of the profiled steel 3 is inserted into the inside of the first fork hook 11, and the other side is inserted into the inside of the second fork hook 21 to clamp both sides of the profiled steel 3.
[0048] Step S3: Clamp the profiled steel 3. The first pin shaft 13 and the second pin shaft 23 move away from each other, so that the first fork hook 11 and the second fork hook 21 move closer to each other, thereby clamping the profiled steel 3.
[0049] Step S4: Then operate the crane to lift the profiled steel 3 and hoist the profiled steel 3 to the required position.
[0050] During the hoisting process of the present utility model, the resultant force that makes the first pin shaft 13 and the second pin shaft 23 approach each other is synthesized by the tension of the inclined chain 5 and the downward gravity of the profiled steel 3, so that the first pin shaft 13 and the second pin shaft 23 move away from each other, the first fork hook 11 and the second fork hook 21 move closer to each other, clamp and fix the profiled steel 3, and hoist the profiled steel 3 to the required position.
[0051] After the profiled steel 3 is in place, continue to lower the lifting ring 4, and the first fork arm 1 and the second fork arm 2 will loosen naturally; pull the first fork arm 1 and the second fork arm 2 apart and move them away from the profiled steel 3 to complete one hoisting. When hoisting the full-length profiled steel 3, the profiled steel hoisting clamp should be used in pairs to ensure the balanced hoisting of the profiled steel 3.
[0052] The above embodiments are the preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.
Claims
1. A steel lifting fixture, characterized in that: The invention comprises a first fork arm (1) installed on one side and a second fork arm (2) installed on the other side, wherein a first fork hook (11) for clamping one side of a steel section (3) is installed at the lower part of the first fork arm (1), and a second fork hook (21) for clamping the other side of the steel section (3) is installed at the lower part of the second fork arm (2); the first fork arm (1) is provided with a first slide groove (12), and the second fork arm (2) is provided with a second slide groove (22); a first pin shaft (13) is fixedly installed at one end of the first fork arm (1), and a second pin shaft (23) is fixedly installed at one end of the second fork arm (2); the second pin shaft (23) slides along the inside of the first slide groove (12), and the first pin shaft (13) slides along the inside of the second slide groove (22); the first pin shaft (13) and the second pin shaft (23) are separated from each other, so that the first fork hook (11) and the second fork hook (21) are close to each other, thereby clamping the steel section (3).
2. A steel lifting fixture according to claim 1, characterized in that: An open slot (16) is provided in the middle of the first fork arm (1), and the second fork arm (2) is inserted into the open slot (16) and slides laterally along the open slot (16).
3. A steel lifting fixture according to claim 2, characterized in that: A reinforcing plate (14) is installed inside the open groove (16).
4. The steel lifting fixture according to claim 1, characterized in that: The diameters of the first pin shaft (13) and the second pin shaft (23) are smaller than the widths of the first sliding groove (12) and the second sliding groove (22).
5. The steel lifting fixture according to claim 1, characterized in that: The first slide groove (12) and the second slide groove (22) are annular, with arc-shaped ends, and match the first pin shaft (13) and the second pin shaft (23).
6. The steel lifting fixture according to claim 1, characterized in that: The first fork arm (1) is provided with a first pin hole (15), and the first pin shaft (13) is inserted into the first pin hole (15) and is interference-connected; the second fork arm (2) is provided with a second pin hole (25), and the second pin shaft (23) is inserted into the second pin hole (25) and is interference-connected.
7. The steel lifting fixture according to claim 1, characterized in that: Anti-slip flanges (24) are installed at both ends of the first pin shaft (13) and the second pin shaft (23); the anti-slip flanges (24) are welded to both ends of the first pin shaft (13) and the second pin shaft (23).
8. The steel lifting fixture according to claim 1, characterized in that: It also comprises a lifting ring (4), wherein a chain (5) is installed inside the lifting ring (4), and the chain (5) passes through the lifting ring (4), one end of which is connected to the first fork arm (1), and the other end of which is connected to the second fork arm (2).
9. The steel lifting fixture according to claim 8, characterized in that: The first fork arm (1) and the second fork arm (2) are both provided with a lifting ear (17) at their upper parts, the lifting ear (17) being provided with a lifting ear hole (18), a shackle (19) being installed inside the lifting ear hole (18), and the chain (5) is connected to the first fork arm (1) and the second fork arm (2) by passing through the lifting ear hole (18) via the shackle (19).