A hoisting rigging for port construction

Abstract

The utility model provides a hoist sling for port construction. It relates to the technical field of construction hoist. The hoist sling for port construction comprises a hollow connecting seat, a first main ring and a second main ring are fixedly installed at the top and bottom of the hollow connecting seat respectively, a first secondary ring is sleeved on the second main ring, a second secondary ring is hinged on one side of the first secondary ring, the first main ring, the second main ring, the first secondary ring and the second secondary ring are all designed in U shape, a steel wire rope is fixedly installed on the second secondary ring, and a lifting hook is fixedly installed at the bottom end of the steel wire rope; a clamping mechanism is arranged in the hollow connecting seat to form a limiting effect on the first secondary ring; flat grooves are formed on the same side of the first secondary ring and the second secondary ring, and the two flat grooves are communicated. The utility model can slow down the abrasion speed between the main ring and the secondary ring, prolong the service life of the sling, and effectively improve the safety of hoisting operation.

Description

Technical Field

[0001] This utility model relates to the field of construction lifting equipment technology, specifically a lifting sling for port construction. Background Technology

[0002] In port construction, lifting slings are indispensable and crucial equipment, primarily used for lifting and transferring heavy objects such as containers, steel, and machinery. Existing port construction lifting slings mostly employ a single wire rope with hooks, which has significant drawbacks in practical use: The secondary ring of the existing sling is usually directly attached to the main ring at the top. During lifting, due to the inertial force of the cargo, the secondary ring oscillates back and forth along the inner wall of the main ring. During this oscillation, continuous friction occurs at the contact point between the secondary and main rings. This oscillating friction not only significantly accelerates the wear rate of both the main and secondary rings, severely shortening the overall service life of the sling, but also easily leads to a decrease in structural strength due to wear, thus increasing the risk of lifting accidents. Simultaneously, the oscillation of the secondary ring is directly transmitted to the suspended load below, resulting in insufficient stability and further increasing the safety hazard of cargo falling off.

[0003] Therefore, it is necessary to provide a new type of hoisting sling for port construction to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this utility model is to provide a hoisting sling for port construction that can slow down the wear rate between the main ring and the auxiliary ring, extend the service life of the sling, and effectively improve the safety of hoisting operations.

[0005] To solve the above-mentioned technical problems, the hoisting sling for port construction provided by this utility model includes: a hollow connecting seat, on which a first main ring and a second main ring are fixedly installed at the top and bottom respectively, a first auxiliary ring is sleeved on the second main ring, and a second auxiliary ring is hinged to one side of the first auxiliary ring. The first main ring, the second main ring, the first auxiliary ring and the second auxiliary ring are all U-shaped. A steel wire rope is fixedly installed on the second auxiliary ring, and a hook is fixedly installed at the bottom end of the steel wire rope. The hollow connecting seat is provided with a locking mechanism to limit the first auxiliary ring. A flat groove is opened on the same side of the first auxiliary ring and the second auxiliary ring. The two flat grooves are connected. The same connecting support plate is provided in the two flat grooves. Two mounting holes are opened on the connecting support plate. Threaded grooves are opened in the two flat grooves. Fixing bolts are provided in the two mounting holes. The ends of the two fixing bolts extend into the two threaded grooves and are screwed into the inner walls of the two threaded grooves.

[0006] Furthermore, the locking mechanism includes a bidirectional screw, which is rotatably installed inside the hollow connecting seat. Two linkage slides are threaded onto the bidirectional screw. The bottoms of the two linkage slides extend to the bottom of the hollow connecting seat and are slidably connected to the bottom of the hollow connecting seat. Connecting strips are fixedly installed on the sides of the two linkage slides that are close to each other. The second main ring passes through the two connecting strips and does not contact the inner walls of the two connecting strips. Locking rods are fixedly installed at the bottoms of the two connecting strips. The second main ring passes through the two locking rods and contacts the inner walls of the two locking rods. The first secondary ring is located between the two locking rods. Both the connecting strips and the locking rods are U-shaped.

[0007] Furthermore, guide posts are fixedly installed on both sides of the second main ring. The two guide posts pass through the corresponding linkage slide plate and are slidably connected to the corresponding linkage slide plate. Fastening screws are threaded on the two linkage slide plates, and the ends of the two fastening screws abut against the two guide posts respectively.

[0008] Furthermore, one end of the bidirectional screw extends to the outside of the hollow connecting seat and is fixedly mounted with a handle, the handle being provided with anti-slip texture.

[0009] Furthermore, the bottom of the hollow connecting seat has two clearance openings, and the two linkage sliding plates pass through the two clearance openings respectively.

[0010] Furthermore, multiple reinforcing plates are fixedly installed inside the hollow connecting seat, and the bidirectional screw passes through the multiple reinforcing plates and is rotatably connected to the multiple reinforcing plates.

[0011] Furthermore, a support plate is fixedly installed on one side of the locking rod near the other locking rod. A pressing screw is threaded onto the support plate. A pressing plate is fixedly installed at the bottom end of the pressing screw. A knob is fixedly installed at the top end of the pressing screw. A fastening spring is sleeved on the pressing screw, and the fastening spring is located between the knob and the support plate.

[0012] Compared with related technologies, the hoisting slings for port construction provided by this utility model have the following advantages: I. This utility model uses a locking rod and a lower pressure plate to limit the first auxiliary ring in both directions, preventing it from reciprocating and rubbing against the second main ring. At the same time, surface contact replaces traditional line contact, reducing the wear rate and extending the overall service life of the rigging. Second, this utility model restricts the swing of the first and second auxiliary rings, preventing the swaying from being transmitted to the heavy objects below, effectively preventing the heavy objects from swaying due to inertia and reducing the risk of goods falling off. Attached Figure Description

[0013] Figure 1A schematic diagram of a preferred embodiment of the hoisting slings for port construction provided by this utility model; Figure 2 This is a frontal planar structural diagram of the present invention; Figure 3 This is an assembly diagram of the second main ring and the locking rod in this utility model; Figure 4 This is a schematic diagram of the horizontal groove in this utility model.

[0014] The following are the labels in the diagram: 1. Hollow connecting seat; 2. First main ring; 3. Second main ring; 4. First auxiliary ring; 5. Second auxiliary ring; 6. Wire rope; 7. Hook; 8. Double-acting screw; 9. Linkage sliding plate; 10. Connecting strip; 11. Locking rod; 12. Guide column; 13. Fastening screw; 14. Flat groove; 15. Connecting support plate; 16. Fixing bolt; 17. Support plate; 18. Downward pressing screw; 19. Downward pressing plate; 20. Fastening spring. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Please refer to the following: Figures 1-4 ,in, Figure 1 A schematic diagram of a preferred embodiment of the hoisting slings for port construction provided by this utility model; Figure 2 This is a frontal planar structural diagram of the present invention; Figure 3 This is an assembly diagram of the second main ring and the locking rod in this utility model; Figure 4 This is a schematic diagram of the horizontal groove in this utility model.

[0017] The hoisting sling for port construction includes: a hollow connecting seat 1, with a first main ring 2 and a second main ring 3 fixedly installed at the top and bottom of the hollow connecting seat 1, respectively. A first auxiliary ring 4 is fitted onto the second main ring 3, and a second auxiliary ring 5 is hinged to one side of the first auxiliary ring 4. The first main ring 2, the second main ring 3, the first auxiliary ring 4, and the second auxiliary ring 5 are all U-shaped, and a steel wire rope 6 is fixedly installed on the second auxiliary ring 5. A hook 7 is fixedly installed at the bottom end of the steel wire rope 6, thus forming a complete hoisting sling. To lock the first auxiliary ring 4 in place and prevent it from swinging and rubbing against the second main ring 3 during hoisting, a locking mechanism is provided inside the hollow connecting seat 1. The mechanism is designed to limit the first secondary ring 4. In addition, in order to ensure a stable connection between the first secondary ring 4 and the second secondary ring 5, a flat groove 14 is provided on the same side of both the first secondary ring 4 and the second secondary ring 5. The two flat grooves 14 are connected and a common connecting support plate 15 is provided in the two flat grooves 14. The connecting support plate 15 has two mounting holes. A threaded groove is provided in both flat grooves 14. A fixing bolt 16 is provided in both mounting holes. The ends of the two fixing bolts 16 extend into the two threaded grooves and are screwed into the inner walls of the two threaded grooves. The first secondary ring 4 can be removed from the second main ring 3 by removing the two fixing bolts 16.

[0018] The aforementioned locking mechanism includes a bidirectional screw 8 rotatably mounted within the hollow connecting seat 1. One end of the screw extends outside the hollow connecting seat 1 and is fixedly mounted with a handle. The handle has anti-slip textures for stable operation. Two linkage slide plates 9 are threaded onto the bidirectional screw 8. The bottoms of both linkage slide plates 9 extend below the hollow connecting seat 1 and slide slidably connect with the bottom of the hollow connecting seat 1. This sliding connection is achieved by opening two clearance slots at the bottom of the hollow connecting seat 1, through which the two linkage slide plates 9 pass. Two connecting slide plates 9 are fixedly installed on their sides that are close to each other. The second main ring 3 passes through the two connecting strips 10 and does not contact the inner wall of the two connecting strips 10. The bottom of the two connecting strips 10 is fixedly installed with a locking rod 11. The second main ring 3 passes through the two locking rods 11 and contacts the inner wall of the two locking rods 11. The first auxiliary ring 4 is located between the two locking rods 11. The connecting strips 10 and the locking rods 11 are both U-shaped. The U-shaped design ensures that the connecting strips 10 and the locking rods 11 are not interfered with by the second main ring 3 and can move horizontally smoothly.

[0019] In the above method, in order to ensure that the linkage slide plate 9 can perform stable linear motion, guide posts 12 are fixedly installed on both sides of the second main ring 3. The two guide posts 12 pass through the corresponding linkage slide plate 9 and are slidably connected to the corresponding linkage slide plate 9. The two linkage slide plates 9 are threaded with fastening screws 13. The ends of the two fastening screws 13 abut against the two guide posts 12 respectively. Through the abutment between the fastening screws 13 and the guide posts 12, the locking rod 11 can form a stable locking effect.

[0020] In this embodiment, in order to enhance the strength of the hollow connecting seat 1 and improve the stability of the bidirectional screw 8 when rotating, multiple reinforcing plates are fixedly installed inside the hollow connecting seat 1, and the bidirectional screw 8 passes through the multiple reinforcing plates and is rotatably connected to the multiple reinforcing plates.

[0021] In this embodiment, in order to achieve a locking effect at the top of the first secondary ring 4, a support plate 17 is fixedly installed on one side of the locking rod 11 near the other locking rod 11. A pressing screw 18 is threaded onto the plate, a pressing plate 19 is fixedly installed at the bottom end of the pressing screw 18, a knob is fixedly installed at the top end of the pressing screw 18, and a fastening spring 20 is sleeved on the pressing screw 18. The fastening spring 20 is located between the knob and the support plate 17.

[0022] The working principle of the hoisting slings for port construction provided by this utility model is as follows: In this lifting sling, the first main ring 2 is used to connect with external lifting equipment, and the steel wire rope 6 and hook 7 fixed below the second auxiliary ring 5 are used to suspend the heavy object to be lifted. When hoisting heavy objects, in order to prevent the first auxiliary ring 4 from swinging back and forth and rubbing within the second main ring 3, the handle at the end of the bidirectional screw 8 can be rotated. The bidirectional screw 8 rotates stably under the support of the reinforcing plate in the hollow connecting seat 1. Since the bidirectional screw 8 is threadedly engaged with the two linkage slide plates 9, and the linkage slide plates 9 restrict the degree of rotational freedom through the guide post 12, when the bidirectional screw 8 rotates, it drives the two linkage slide plates 9 to move closer to each other along the guide post 12. At the same time, the linkage slide plates 9 synchronously drive the bottom fixed connecting strip 10 and the locking rod 11 to move until the two locking rods 11 respectively contact the two sides of the first auxiliary ring 4, thereby limiting the horizontal direction of the first auxiliary ring 4. Subsequently, tighten the fastening screws 13 on the two linkage slide plates 9 so that the ends of the fastening screws 13 abut against the guide post 12, fixing the position of the linkage slide plates 9. Then, turn the knob at the top of the pressing screw 18 to drive the pressing screw 18 to move downward along the support plate 17, so that the pressing plate 19 presses the top of the first sub-ring 4. At the same time, the fastening spring 20 generates an elastic preload between the knob and the support plate 17, further strengthening the vertical limit of the first sub-ring 4 and preventing it from moving up and down. At this point, the locking and restraint of the first auxiliary ring 4 and the second auxiliary ring 5 are completed, and the next step of hoisting work can be carried out. During the hoisting process, the first auxiliary ring 4 is constrained by the two locking rods 11 and the lower pressure plate 19, and cannot swing back and forth along the inner wall of the second main ring 3. It only moves as a whole with the hoisting equipment.

[0023] Compared with related technologies, the hoisting slings for port construction provided by this utility model have the following advantages: I. This utility model uses the locking rod 11 and the lower pressure plate 19 to limit the first auxiliary ring 4 in both directions, so as to avoid it from reciprocating and rubbing against the second main ring 3. At the same time, the surface contact replaces the traditional line contact, reducing the wear rate and extending the overall service life of the rigging. Second, this utility model restricts the swing of the first auxiliary ring 4 and the second auxiliary ring 5, preventing the swaying from being transmitted to the heavy object below, effectively preventing the heavy object from swaying due to inertia and reducing the risk of the goods falling off.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A hoisting sling for port construction, comprising a hollow connecting seat, wherein a first main ring and a second main ring are respectively fixedly installed at the top and bottom of the hollow connecting seat, characterized in that, The second main ring is fitted with a first secondary ring, and a second secondary ring is hinged to one side of the first secondary ring. The first main ring, the second main ring, the first secondary ring and the second secondary ring are all U-shaped. A steel wire rope is fixedly installed on the second secondary ring, and a hook is fixedly installed at the bottom end of the steel wire rope. The hollow connecting seat is equipped with a locking mechanism to limit the first auxiliary ring. The first and second auxiliary rings are both provided with flat grooves on the same side, and the two flat grooves are connected. The two flat grooves are provided with the same connecting support piece, and the connecting support piece is provided with two mounting holes. The two flat grooves are both provided with threaded grooves, and the two mounting holes are both provided with fixing bolts. The ends of the two fixing bolts extend into the two threaded grooves and are screwed into the inner walls of the two threaded grooves.

2. The hoisting sling for port construction according to claim 1, characterized in that, The locking mechanism includes a bidirectional screw, which is rotatably installed inside the hollow connecting seat. Two linkage slide plates are threaded onto the bidirectional screw. The bottom of each linkage slide plate extends to the bottom of the hollow connecting seat and slides slidably connected to the bottom of the hollow connecting seat. Connecting strips are fixedly installed on the sides of the two linkage slide plates that are close to each other. The second main ring passes through the two connecting strips and does not contact the inner walls of the two connecting strips. Locking rods are fixedly installed at the bottom of each of the two connecting strips. The second main ring passes through the two locking rods and contacts the inner walls of the two locking rods. The first secondary ring is located between the two locking rods. Both the connecting strips and the locking rods are U-shaped.

3. The hoisting sling for port construction according to claim 2, characterized in that, Guide posts are fixedly installed on both sides of the second main ring. The two guide posts pass through the corresponding linkage slide plate and are slidably connected to the corresponding linkage slide plate. Fastening screws are threaded on the two linkage slide plates. The ends of the two fastening screws abut against the two guide posts respectively.

4. The hoisting sling for port construction according to claim 2, characterized in that, One end of the bidirectional screw extends to the outside of the hollow connecting seat and is fixedly mounted with a rotating handle, which has anti-slip texture.

5. The hoisting sling for port construction according to claim 2, characterized in that, The bottom of the hollow connecting seat has two clearance openings, and the two linkage sliding plates pass through the two clearance openings respectively.

6. The hoisting sling for port construction according to claim 2, characterized in that, Multiple reinforcing plates are fixedly installed inside the hollow connecting seat, and the bidirectional screw passes through the multiple reinforcing plates and is rotatably connected to the multiple reinforcing plates.

7. The hoisting sling for port construction according to claim 2, characterized in that, A support plate is fixedly installed on one of the locking rods near the other locking rod. A pressing screw is threaded onto the support plate. A pressing plate is fixedly installed at the bottom end of the pressing screw. A knob is fixedly installed at the top end of the pressing screw. A fastening spring is sleeved on the pressing screw. The fastening spring is located between the knob and the support plate.

Images