A lifting hook and lifting device for square tube galvanizing

Abstract

The utility model relates to square -rectangular tube galvanization equipment field, and specifically is a kind of for square -rectangular tube galvanization lifting appliance hook and lifting appliance.Lifting appliance hook includes the lifting appliance connecting portion for being connected with lifting appliance main body, and the lifting appliance connecting portion lower side is equipped with rigid L type support framework, and the upper end of the vertical rod section of L type support framework is connected with lifting appliance connecting portion, and the lower end of vertical rod section is connected with the one end of the horizontal rod section of L type support framework, and first support part is equipped at the connecting place of vertical rod section and horizontal rod section, and the one end of horizontal rod section is equipped with second support part away from vertical rod section, and the lower side of lifting appliance connecting portion is detachably connected with flexible stainless steel wire suspension piece, and suspension piece tail portion successively passes first support part and second support part, and suspension piece tail portion is detachably connected with horizontal rod section.The utility model aims at reducing the problem that subsequent zinc supplement operation workload is big due to the contact area of lifting appliance and square -rectangular tube body being prone to obvious lifting point trace.

Description

Technical Field

[0001] This utility model relates to the field of galvanizing equipment for square and rectangular tubes, specifically a lifting hook and lifting device for galvanizing square and rectangular tubes. Background Technology

[0002] Rectangular and square tubes, as an important structural material, are widely used in construction, machinery manufacturing, and power facilities. Hot-dip galvanizing is one of the most common and effective surface treatment methods to enhance the corrosion resistance of rectangular and square tubes. However, in the production practice of hot-dip galvanizing, obvious lifting point marks are easily produced at the contact area between traditional lifting tools and the tube body. These marks not only affect the surface aesthetics of the galvanized parts, but more importantly, they may also indicate discontinuities or insufficient thickness, thus becoming a weak link in the overall corrosion protection system of the component.

[0003] Currently, the conventional method for treating lifting point marks is to repair the marks without a zinc layer using a zinc-rich coating after the galvanized assembly has cooled. Although this method restores the corrosion resistance of the area with lifting point marks to some extent, the repair work is inefficient, labor-intensive, and it is difficult to maintain uniform repair quality. Utility Model Content

[0004] The present invention aims to provide a lifting hook and lifting device for galvanizing square and rectangular tubes, so as to reduce the problem of large workload in subsequent zinc replenishment operations caused by obvious lifting point marks easily generated in the contact area between the lifting device and the square and rectangular tube body.

[0005] To solve the above technical problems, the specific solution adopted by this utility model is as follows: it includes a lifting device connecting part for connecting with the lifting device body, a rigid L-shaped support frame is provided below the lifting device connecting part, the upper end of the vertical rod segment of the L-shaped support frame is connected to the lifting device connecting part, one end of the horizontal rod segment of the L-shaped support frame is connected to the lower end of the vertical rod segment, a first support part is provided at the connection between the vertical rod segment and the horizontal rod segment, a second support part is provided at the end of the horizontal rod segment away from the vertical rod segment, and a flexible stainless steel wire suspension component is detachably connected below the lifting device connecting part, the tail of the suspension component passes around the first support part and the second support part in sequence, and the tail of the suspension component is detachably connected to the horizontal rod segment.

[0006] As a further optimization of the hook for galvanizing square and rectangular tubes: a locking hole is provided on the horizontal bar section, and a locking pin is provided at the tail of the suspension component. The locking pin cooperates with the locking hole to realize the detachable connection of the suspension component.

[0007] As a further optimization of the hook for galvanizing square and rectangular tubes: multiple locking holes are provided at intervals along the length of the transverse rod segment.

[0008] As a further optimization of the lifting hook for galvanizing square and rectangular tubes: a lifting ring is provided below the lifting connection part, and the suspension component passes through the lifting ring and is detachably connected by a shackle.

[0009] As a further optimization of the lifting hook for galvanizing square and rectangular tubes: at least one lifting ring is provided below the lifting connection part, and each lifting ring is connected to a suspension component.

[0010] This utility model discloses a lifting device for galvanizing square and rectangular tubes: it includes a hanger, with lifting lugs on the top of the hanger for lifting, and a crossbeam on the bottom of the hanger. Both ends of the crossbeam are connected to lifting hooks for galvanizing square and rectangular tubes through a lifting device connection part.

[0011] As a further optimization of the hanger used for galvanizing square and rectangular tubes: at least one crossbeam is provided below the hanger.

[0012] As a further optimization of the lifting device for galvanizing square and rectangular tubes: the lifting hooks for galvanizing square and rectangular tubes at both ends of the crossbeam are arranged opposite to each other or in parallel.

[0013] Beneficial effects: This utility model uses a detachable stainless steel wire suspension component that directly contacts the square and rectangular tube, and uses an L-shaped support frame and its first and second support parts to support the suspension component. Compared with traditional rigid hooks, this significantly reduces the contact area between the lifting device and the tube body, thereby reducing the problem of obvious lifting point marks easily generated in the contact area between the lifting device and the square and rectangular tube body, and thus reducing the workload of subsequent zinc replenishment operations.

[0014] This invention adjusts the tightness of the suspension component by setting multiple locking holes, ensuring that the suspension component can tightly fit the outer wall of square or rectangular tubes of different weights or sizes when supporting them. This provides a certain lateral movement resistance to the square or rectangular tubes, effectively limiting the lateral displacement of the square or rectangular tubes after immersion in molten zinc. This eliminates the need for additional physical blocks or limiting devices, avoiding contact marks caused by contact between the square or rectangular tubes and blocks or limiting devices. This not only simplifies the structure of the lifting device but also improves the stability and reliability of the galvanizing process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the lifting hook of this utility model; Figure 2 This is a front view of the lifting hook of this utility model; Figure 3 This is a right view of the lifting hook of this utility model; Figure 4 This is a schematic diagram of the lifting ring connection of this utility model; Figure 5 This is a schematic diagram of the lifting device structure of this utility model; Figure 6 A front view showing the relative arrangement of the hooks on the lifting device of this utility model; Figure 7 A front view showing the parallel arrangement of the hooks on the lifting device of this utility model; The markings in the diagram are: 1. Lifting device connection part, 2. L-shaped support frame, 3. Locking pin, 4. Locking hole, 5. Second support part, 6. First support part, 7. Suspension component, 8. Lifting ring, 9. Shackle, 10. Lifting frame, 11. Lifting lug, 12. Horizontal beam, 13. Hook, 14. Vertical rod segment, 15. Horizontal rod segment. Detailed Implementation

[0016] like Figure 5 As shown, a lifting device for galvanizing square and rectangular tubes includes a lifting frame 10, with lifting lugs 11 on the top of the lifting frame 10 and a crossbeam 12 below the lifting frame 10. Both ends of the crossbeam 12 are connected to lifting hooks 13 via lifting device connecting parts 1. The lifting frame 10 and the crossbeam 12 constitute the main frame of the lifting device, used to support multiple square and rectangular tubes and evenly distribute the lifting force to each hook 13. The lifting lugs 11 are the connection points between the lifting device and external lifting equipment, and the input points for the lifting force of the external lifting equipment.

[0017] like Figure 6 and Figure 7 As shown, at least one crossbeam 12 is provided below the hanger 10. The number of crossbeams 12 can be increased or decreased according to actual production needs. In this embodiment, there are two crossbeams 12. The hooks 13 at both ends of the crossbeam 12 are arranged in parallel or opposite directions. The hooks 13 arranged in parallel can lift longer rectangular tubes and lift multiple rows of parallel rectangular tubes at the same time. The hooks 13 arranged opposite directions are more suitable for clamping a single tube on both sides for galvanizing. The working stability of the hooks 13 arranged opposite directions is stronger. In this embodiment, the hooks 13 are arranged in parallel.

[0018] like Figure 1 , Figure 2 and Figure 3 As shown, the lifting hook 13 includes a lifting connection part 1 for connecting with the lifting body. The lifting connection part 1 is the interface between the hook 13 and the lifting beam 12, used to realize force transmission and structural fixation. An L-shaped support frame 2 is provided below the lifting connection part 1. The L-shaped frame is the rigid main frame of the entire hook 13, providing support points for the suspended component 7. The upper end of the vertical rod segment 14 of the L-shaped support frame 2 is connected to the lifting connection part 1, and one end of the horizontal rod segment 15 of the L-shaped support frame 2 is connected to the lower end of the vertical rod segment 14. The L-shaped support frame 2 can fix the suspended component 7 and stably lift the rectangular tube by means of only the vertical rod segment 14 and the horizontal rod segment 15, which avoids structural redundancy while ensuring stable operation and safety.

[0019] A first support 6 is provided at the connection between the vertical rod segment 14 and the horizontal rod segment 15. The first support 6 causes the suspension member 7 to change from vertical to horizontal. A second support 5 is provided at the end of the horizontal rod segment 15 away from the vertical rod segment 14. The second support 5 and the first support 6 work together to adjust the tightness of the suspension member 7 when the tail of the suspension member 7 is tightened or released.

[0020] A suspension component 7 is detachably connected below the lifting device connection part 1. The suspension component 7 is a stainless steel wire rope. The middle part of the suspension component 7 passes successively around the first support part 6 and the second support part 5. The tail of the suspension component 7 is detachably connected to the transverse rod section 15. The suspension component 7 is a component that directly contacts the square and rectangular tube body, changing the surface contact of the traditional hook 13 to line contact, greatly reducing the contact area and effectively avoiding large-area lifting point marks without zinc coating. At the same time, the detachable connection method facilitates the maintenance of the hook 13, enhances the practicality of the hook 13, and reduces maintenance costs.

[0021] The transverse section 15 is provided with locking holes 4, and the tail of the flexible suspension rod is provided with locking pins 3. The locking pins 3 and locking holes 4 cooperate to lock the suspension component 7. The pin-hole connection is a simple and reliable mechanical connection method, which facilitates the loading and unloading of the rectangular tube. Multiple locking holes 4 are provided at intervals along the length of the transverse section 15. The multiple locking holes 4 provide different locking positions, allowing the operator to adjust the tightness of the flexible component according to the size of the rectangular tube.

[0022] like Figure 4 As shown, a lifting ring 8 is provided below the lifting device connecting part 1. The suspension member 7 passes through the lifting ring 8 and is connected by a shackle 9. There is at least one lifting ring 8 below the lifting device connecting part 1, and each lifting ring 8 is connected to a suspension member 7. The transverse rod segment 15 is provided with multiple corresponding locking holes 4. The connection method between the lifting ring 8 and the shackle 9 facilitates the replacement and maintenance of the flexible connector. The design of multiple suspension members 7 achieves uniform load distribution and improves the safety of the hook 13.

[0023] The present invention relates to a lifting hook for galvanizing square and rectangular tubes and a method for using the lifting hook: First, the upper end of the suspension member 7 is passed through the lifting ring 8 below the lifting hook connection part 1 and fixed using a shackle 9; then, the middle part of the suspension member 7 is passed around the first support part 6 and the second support part 5 on the L-shaped support frame 2 in sequence, and the suspension member 7 is fixed by the locking pin 3 at the tail of the suspension member 7 and the locking hole 4 on the transverse rod section 15, forming a hook 13 with the suspension member 7 as the contact surface; in use, the tightness of the suspension member 7 is adjusted according to the size of the square and rectangular tube, and the square and rectangular tube is placed on the hook 13, and normal lifting and galvanizing operations can be carried out.

Claims

1. A lifting hook for galvanizing square and rectangular tubes, characterized in that: The device includes a lifting device connection part (1) for connecting to the lifting device body. A rigid L-shaped support frame (2) is provided below the lifting device connection part (1). The upper end of the vertical rod segment (14) of the L-shaped support frame (2) is connected to the lifting device connection part (1). One end of the horizontal rod segment (15) of the L-shaped support frame (2) is connected to the lower end of the vertical rod segment (14). A first support part (6) is provided at the connection between the vertical rod segment (14) and the horizontal rod segment (15). A second support part (5) is provided at the end of the horizontal rod segment (15) away from the vertical rod segment (14). A flexible stainless steel wire suspension part (7) is detachably connected below the lifting device connection part (1). The tail of the suspension part (7) passes around the first support part (6) and the second support part (5) in sequence. The tail of the suspension part (7) is detachably connected to the horizontal rod segment (15).

2. The lifting hook for galvanizing square and rectangular tubes as described in claim 1, characterized in that: The transverse rod segment (15) is provided with a locking hole (4), and the tail of the suspension component (7) is provided with a locking pin (3). The locking pin (3) and the locking hole (4) cooperate to realize the detachable connection of the suspension component (7).

3. A lifting hook for galvanizing square and rectangular tubes as described in claim 2, characterized in that: Multiple locking holes (4) are provided at intervals along the length direction of the transverse bar segment (15).

4. A lifting hook for galvanizing square and rectangular tubes as described in claim 1, characterized in that: A lifting ring (8) is provided below the lifting connection part (1), and the suspension part (7) passes through the lifting ring (8) and is detachably connected by a shackle (9).

5. A lifting hook for galvanizing square and rectangular tubes as described in claim 4, characterized in that: At least one lifting ring (8) is provided below the lifting device connection part (1), and each lifting ring (8) is connected to a suspension component (7).

6. A lifting device for galvanizing square and rectangular tubes, characterized in that: It includes a hanger (10), with a lifting lug (11) for lifting above the hanger (10) and a crossbeam (12) below the hanger (10). Both ends of the crossbeam (12) are connected to a lifting hook as described in any one of claims 1-5 via a lifting hook connection part (1).

7. A lifting device for galvanizing square and rectangular tubes as described in claim 6, characterized in that: At least one crossbeam (12) is provided below the hanger (10).

8. A lifting device for galvanizing square and rectangular tubes as described in claim 6, characterized in that: The hooks for galvanizing square and rectangular tubes at both ends of the crossbeam (12) are set opposite to each other or parallel to each other.

Images