Automatic unhooking device for underwater sandbags
By designing an automatic decoupling device for underwater sandbags including hooks, hook heads, counterweights and anti-torsion rods, the problem that underwater sandbags cannot be automatically tripped is solved, automatic decoupling and preventing winding are achieved, and construction efficiency and operation reliability are improved.
Patent Information
- Application Number
- CN202420610222.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-03-27
AI Technical Summary
In the prior art, underwater sandbags cannot be automatically tripped, resulting in inconvenience in construction. Especially when the sea swells are large, divers cannot go into the water to perform unblocking operations, resulting in a long construction cycle.
Design an automatic decoupling device for underwater sandbags, including hooks, hook heads, counterweights and anti-torsion rods. The hook can rotate at the center of the hanging hole, and the counterweight block allows the hook to automatically escape from the sandbag hanging point when it is not subjected to force, and the anti-torsion rod prevents the hook from wrapping with the sandbag hanging point.
The automatic decoupling of sandbags is realized, avoiding the hook head and sandbag hanging points are entangled, the construction efficiency is improved, and the operation can be carried out when the temperature is not flat, ensuring timely protection of the cables.
Smart Images
Figure CN222714908U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of underwater hoisting operations, and in particular relates to an underwater sandbag automatic unhooking device. Background Art
[0002] In marine engineering, submarine cables need to be protected during underwater installation and salvage projects. The existing technical solution is to use a crane to place sandbags around the umbilical cable, and divers go into the water to unfasten the cables. This solution has the following disadvantages: the unfastening operation by divers is greatly affected by weather factors. Once the sea waves are large, divers cannot go into the water to unfasten the cables, which makes the construction operation cycle longer. If the sandbags can be unfastened automatically and the hooks do not get entangled with the sandbag hanging points during unfastening, the construction efficiency can be greatly improved.
[0003] Therefore, it is urgent to design an underwater sandbag automatic unhooking device to solve the above-mentioned problem that the sandbag cannot be automatically unhooked and causes construction inconvenience. Utility Model Content
[0004] In order to solve the technical problem mentioned in the background technology that the sandbags cannot be automatically unhooked, causing inconvenience in construction, an underwater sandbag automatic unhooking device is provided to solve the above problem.
[0005] In order to achieve the above-mentioned purpose, the specific technical scheme of an underwater sandbag automatic unhooking device of the utility model is as follows:
[0006] An underwater sandbag automatic unhooking device comprises a hook, one end of which is provided with a hook head for hooking the sandbag, an end of the hook away from the hook head is provided with a counterweight block, a hanging hole connected to a crane wire rope is provided between the counterweight block and the hook head, and the hook can rotate with the hanging hole as the center.
[0007] Furthermore, an arc-shaped protrusion is provided between the counterweight block and the hook head, and the hanging hole is located on the arc-shaped protrusion.
[0008] Furthermore, the clockwise moment generated by the hook head on the hanging hole is smaller than the counterclockwise moment generated by the counterweight block on the hanging hole.
[0009] Furthermore, it also includes an anti-torsion rod, one end of which is connected to the lifting hole, and the end of the anti-torsion rod away from the lifting hole is connected to the crane wire rope.
[0010] Furthermore, the anti-torsion rod is connected to the lifting hole via a first shackle.
[0011] Furthermore, a first groove is provided at one end of the anti-torsion rod away from the crane wire rope, first through holes are provided at the opposite ends of the first groove, a first bent ring is provided at one end of the first shackle, and the anti-torsion rod is connected to the first shackle by passing the first bent ring and the first through hole through a first pin shaft; a first cross bolt is provided at one end of the first shackle away from the first bent ring, and the first shackle is connected to the lifting hole by passing the first cross bolt through the lifting hole.
[0012] Furthermore, a first limiting gap is provided between the first groove and the first curved ring, and a second limiting gap is provided between the first transverse bolt and the hanging hole.
[0013] Furthermore, the anti-torsion rod is connected to the crane wire rope via a second shackle.
[0014] Furthermore, a second groove is provided at one end of the anti-torsion rod away from the lifting hole, second through holes are provided at the opposite two ends of the second groove, a second bent ring is provided at one end of the second shackle, and the anti-torsion rod is connected to the second shackle by passing the second bent ring and the second through hole through a second pin shaft; a second cross bolt is provided at one end of the second shackle away from the second bent ring, and the second shackle is connected to the crane wire rope by passing the second cross bolt through the crane wire rope.
[0015] Furthermore, a third limiting gap is provided between the second groove and the second curved ring.
[0016] The underwater sandbag automatic unhooking device of the utility model has the following advantages:
[0017] The utility model arranges a counterweight block at the end of the hook, and when the hook head is not subjected to force, the hook head is automatically separated from the hanging point of the sandbag under the influence of the gravity of the counterweight block, thereby realizing automatic unhooking.
[0018] The utility model uses the anti-twist rod to prevent the hook head and the sandbag hanging point from being entangled during the lowering of the sandbag, so that the hook head and the sandbag hanging point can be unhooked smoothly.
[0019] The utility model can be used with the assistance of positioning equipment to carry out operations when the tide is not high, which greatly improves the operating efficiency and plays an important role in the timely protection of cables. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the structure of the automatic unhooking device for underwater sandbags of the utility model;
[0021] Figure 2 This is a schematic diagram of the hook structure of the utility model;
[0022] Figure 3 This is a schematic diagram of the anti-torsion rod structure of the utility model;
[0023] Figure 4 This is a schematic diagram of the first shackle structure of the utility model;
[0024] Figure 5 This is a schematic diagram of the second shackle structure of the utility model;
[0025] Explanation of the markings in the figure: 1. Hook; 101. Hook head; 102. Counterweight; 103. Lifting hole; 104. Arc-shaped protrusion; 2. Crane wire rope; 3. Anti-torsion rod; 301. First groove; 302. First through hole; 303. First pin shaft; 304. Second groove; 305. Second through hole; 306. Second pin shaft; 4. First shackle; 401. First bend ring; 402. First cross bolt; 5. Second shackle; 501. Second bend ring; 502. Second cross bolt; 6. Sandbag. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0027] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.
[0028] Please refer to the attached Figure 1 To Attachment Figure 5 The utility model describes an underwater sandbag automatic unhooking device.
[0029] The existing technical solution for underwater unfastening is that a crane lowers a sandbag 6 around the umbilical cable, and divers go into the water to unfasten the cable. The unfastening operation by divers is greatly affected by weather factors. Once the sea waves are large, divers cannot go into the water to unfasten the cable, which makes the construction operation period longer.
[0030] Therefore, the utility model provides an underwater sandbag automatic unhooking device, such as Figure 1 and Figure 2As shown, it includes a hook 1, one end of the hook 1 is provided with a hook head 101 for hooking a sandbag 6, the end of the hook 1 away from the hook head 101 is provided with a counterweight block 102, and a hanging hole 103 connected to the crane wire rope 2 is provided between the counterweight block 102 and the hook head 101. The hook 1 can rotate around the hanging hole 103. When the hook head 101 does not hook the sandbag 6, the counterweight block 102 makes the hook 1 rotate counterclockwise along the hanging hole 103, that is, when the sandbag 6 hooked by the hook head 101 touches the bottom and the sandbag 6 is supported, the hook 1 rotates counterclockwise along the hanging hole 103 to achieve automatic unhooking.
[0031] An arc-shaped protrusion 104 is provided between the counterweight block 102 and the hook head 101, and the lifting hole 103 is located on the arc-shaped protrusion 104. The arc-shaped protrusion 104 avoids the interference of the middle section of the hook body of the hook 1 with the rotation angle of the hook 1 during rotation. By setting the arc-shaped protrusion 104, when the hook 1 rotates along the lifting hole 103, the rotatable angle is larger, the rotation is smoother, and it is also convenient for the hook head 101 to be unhooked from the sandbag 6.
[0032] The clockwise torque generated by the hook head 101 on the hanging hole 103 is smaller than the counterclockwise torque generated by the counterweight block 102 on the hanging hole 103. Preferably, the weight of the hook head 101 is smaller than the weight of the counterweight block 102, so that the length of the hook 1 between the counterweight block 102 and the hanging hole 103 is relatively reduced, thereby reducing the contact area between the hook 1 and the seawater, thereby reducing the impact of the ocean current on the hook 1.
[0033] In order to prevent the hook 1 from being twisted horizontally with the lifting hole 103 as the center under the action of ocean current, the underwater sandbag automatic unhooking device provided by the utility model also includes an anti-twist rod 3, one end of the anti-twist rod 3 is connected to the lifting hole 103, and the end of the anti-twist rod 3 away from the lifting hole 103 is connected to the crane wire rope 2, so that during the lifting operation, the hook 1 and the anti-twist rod 3 form a relatively fixed whole under the action of the gravity of the sandbag 6, so as to avoid the hook 1 from being entangled with the hanging point of the sandbag 6 after horizontal twisting.
[0034] like Figure 3 and Figure 4 As shown, the anti-torsion rod 3 is connected to the lifting hole 103 via the first shackle 4. The anti-torsion rod 3 is provided with a first groove 301 at one end away from the crane wire rope 2, and first through holes 302 are provided at opposite ends of the first groove 301. A first curved ring 401 is provided at one end of the first shackle 4, and the anti-torsion rod 3 is connected to the first shackle 4 by passing the first curved ring 401 and the first through hole 302 through the first pin 303; the first shackle 4 is provided with a first cross bolt 402 at one end away from the first curved ring 401, and the first shackle 4 is connected to the lifting hole 103 by passing the first cross bolt 402 through the lifting hole 103.
[0035] A first limiting gap is provided between the first groove 301 and the first curved ring 401. The smaller the first limiting gap is, the smaller the torsion angle that can occur between the first groove 301 and the first curved ring 401 is. A second limiting gap is provided between the first cross bolt 402 and the hanging hole 103. The smaller the second limiting gap is, the smaller the torsion angle that can occur between the first cross bolt 402 and the hanging hole 103 is, thereby improving the torsion resistance of the anti-torsion rod 3. However, it should be noted that the second limiting gap must be able to ensure smooth rotation between the hanging hole 103 and the first cross bolt 402.
[0036] like Figure 3 and Figure 5 As shown, the anti-torsion rod 3 is connected to the crane wire rope 2 via the second shackle 5. A second groove 304 is provided at one end of the anti-torsion rod 3 away from the lifting hole 103, and second through holes 305 are provided at opposite ends of the second groove 304. A second curved ring 501 is provided at one end of the second shackle 5, and the second pin 306 passes through the second curved ring 501 and the second through hole 305 to connect the anti-torsion rod 3 to the second shackle 5; a second cross bolt 502 is provided at one end of the second shackle 5 away from the second curved ring 501, and the second cross bolt 502 passes through the crane wire rope 2 to connect the second shackle 5 to the crane wire rope 2.
[0037] A third limiting gap is provided between the second groove 304 and the second curved ring 501 . The smaller the third limiting gap is, the smaller the torsion angle that can occur between the second groove 304 and the second curved ring 501 is.
[0038] The working principle of the utility model is as follows: when in use, the hook head 101 is hung on the four hanging points of the sandbag 6, and the crane lifts the sandbag 6 through the crane wire rope 2. Under the guidance of the beacon, the crane is adjusted to find the underwater placement point. During the lowering of the sandbag 6, the anti-torsion rod 3 limits the hook head 101 from being entangled with the hanging points of the sandbag 6. When the sandbag 6 touches the bottom and is placed, the hook head 101 is no longer affected by the pulling force of the sandbag 6. At this time, the hook head 101 is separated from the hanging point of the sandbag 6 under the influence of the gravity of the counterweight block 102, thereby achieving automatic unhooking.
[0039] The utility model sets a counterweight block 102 at the end of the hook 1. When the hook head 101 is not subjected to force, the hook head 101 automatically detaches from the hanging point of the sandbag 6 under the influence of the gravity of the counterweight block 102, thereby realizing automatic unhooking. The anti-torsion rod 3 prevents the hook head 101 and the hanging point of the sandbag 6 from being entangled during the lowering process of the sandbag 6, so that the hook head 101 and the hanging point of the sandbag 6 can be unhooked smoothly. In addition, the device can be operated when the tide is not flat with the assistance of the positioning device, which greatly improves the operating efficiency and plays an important role in the timely protection of the cable.
[0040] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.
Claims
1. An underwater sandbag automatic unhooking device, characterized in that: The utility model comprises a hook, one end of which is provided with a hook head for hooking a sandbag, the other end of the hook away from the hook head is provided with a counterweight block, a hanging hole connected with a crane wire rope is provided between the counterweight block and the hook head, and the hook can rotate with the hanging hole as the center.
2. The underwater sandbag automatic unhooking device according to claim 1, characterized in that: An arc-shaped protrusion is arranged between the counterweight block and the hook head, and the hanging hole is located on the arc-shaped protrusion.
3. The underwater sandbag automatic unhooking device according to claim 2 is characterized in that: The clockwise moment generated by the hook head on the lifting hole is smaller than the counterclockwise moment generated by the counterweight on the lifting hole.
4. The underwater sandbag automatic unhooking device according to claim 1, characterized in that: It also includes an anti-torsion rod, one end of which is connected to the lifting hole, and the other end of the anti-torsion rod away from the lifting hole is connected to the crane wire rope.
5. The underwater sandbag automatic unhooking device according to claim 4, characterized in that: The anti-torsion rod is connected to the lifting hole via a first shackle.
6. The underwater sandbag automatic unhooking device according to claim 5, characterized in that: A first groove is provided at one end of the anti-torsion rod away from the crane wire rope, first through holes are provided at the opposite two ends of the first groove, a first bent ring is provided at one end of the first shackle, and the anti-torsion rod is connected to the first shackle by passing the first bent ring and the first through hole through a first pin shaft; a first cross bolt is provided at one end of the first shackle away from the first bent ring, and the first shackle is connected to the lifting hole by passing the first cross bolt through the lifting hole.
7. The underwater sandbag automatic unhooking device according to claim 6, characterized in that: A first limiting gap is provided between the first groove and the first curved ring, and a second limiting gap is provided between the first transverse bolt and the hanging hole.
8. The underwater sandbag automatic unhooking device according to claim 4, characterized in that: The anti-torsion rod is connected to the crane wire rope via a second shackle.
9. The underwater sandbag automatic unhooking device according to claim 8, characterized in that: A second groove is provided at one end of the anti-torsion rod away from the lifting hole, second through holes are provided at the opposite two ends of the second groove, a second bent ring is provided at one end of the second shackle, and the anti-torsion rod is connected to the second shackle by passing the second bent ring and the second through hole through a second pin shaft; a second cross bolt is provided at one end of the second shackle away from the second bent ring, and the second shackle is connected to the crane wire rope by passing the second cross bolt through the crane wire rope.
10. The underwater sandbag automatic unhooking device according to claim 9, characterized in that: A third limiting gap is provided between the second groove and the second curved ring.