Hole hook for fastening and fastening rigging

Abstract

The invention belongs to the field of devices for deck cargo carrying, and particularly relates to a hole hook for fastening and a fastening rigging. In order to enable a fastening rigging to be suitable for a round hole, the hole hook for fastening comprises a hook body and a lock pin which is matched with the hook body so as to fix the hook body on the round hole during use; the hook body comprises a first insertion section used for being inserted into the round hole and a locking block connected to the lower portion of the first insertion section, the locking pin comprises a second insertion section used for being inserted into the round hole, and the side, away from the second insertion section, of the first insertion section and the side, away from the first insertion section, of the second insertion section are both in an arc shape used for being matched with the hole wall of the round hole in a radial stopping mode. One of the hook body and the lock pin is provided with a sliding rail extending up and down, and the other one is provided with a corresponding sliding groove. The invention further provides a fastening rigging comprising the hole hook for fastening. In the radial direction, the hook body is limited through the lock pin, so that the hole hook is clamped in the round hole and cannot be unlocked by itself, and the fastening rigging with the hole hook can be used for binding goods.

Description

Technical Field

[0001] This invention belongs to the field of devices for deck cargo loading, and particularly relates to a tethering hook and tethering rigging. Background Technology

[0002] When transporting goods by ship, to prevent unnecessary movement of the cargo when the ship rocks, rigging is often used to secure the cargo to the ship. Rigging consists of a chain and hooks connected to both ends of the chain. The ship has threaded holes with threaded studs connected to them. The studs are connected to rigging rings that match the hooks, and the hooks hook onto the rigging rings.

[0003] Circular light-emitting holes are provided on the decks or marine flooring of new types of ships. For example, Chinese invention patent application CN117963067A, published on May 3, 2024, discloses an integrated marine mooring floor, its manufacturing method, and a ship, in which circular light-emitting holes are arranged in a matrix on the deck. In this field, marine flooring can also be laid on the deck, consisting of non-metallic filler and a metal mooring base (channel steel or square tube), with circular light-emitting holes provided on the metal mooring base.

[0004] Chinese invention patent application CN117302772A, published on December 29, 2023, discloses a locking device and a containerized storage unit, specifically disclosing that the containerized storage unit is locked by cooperating with a circular optical hole through the locking device.

[0005] Since ships already have circular open holes, it is cumbersome and time-consuming to add threaded holes for installing lashing rings. Therefore, there is an urgent need for a hole hook and lashing rigging suitable for circular holes. Summary of the Invention

[0006] The purpose of this invention is to provide a fastening hook for holes, so as to solve the technical problem that existing fastening hooks are not suitable for all round holes.

[0007] The present invention also aims to provide a rigging device to solve the technical problem that existing rigging devices are not suitable for all round holes.

[0008] To achieve the above objectives, the technical solution for securing the hook provided by this invention is as follows: A fastening hook includes a hook body for connecting a chain and a locking pin that cooperates with the hook body to fix the hook body to a circular hole during use. The hook body includes a first insertion section for insertion into the circular hole and a locking block connected below the first insertion section. The locking block is positioned below the circular hole during use, and the maximum length of the locking block is greater than the inner diameter of the circular hole. The locking pin includes a second insertion section for insertion into the circular hole. The side of the first insertion section away from the second insertion section and the side of the second insertion section away from the first insertion section are both arc-shaped for radial stop engagement with the wall of the circular hole. One of the hook body and the locking pin is provided with a vertically extending slide rail, and the other is provided with a corresponding slide groove, so that the hook body and the locking pin are guided and slidably engaged in the vertical direction and the radial relative movement of the hook body and the locking pin is restricted.

[0009] Furthermore, the first insertion section has a clearance notch on the side near the second insertion section to prevent interference between the first insertion section and the round hole when the locking block is moved below the round hole.

[0010] Furthermore, the clearance gap is a "<" shaped gap, and the thickness of the first insertion segment continuously decreases from top to bottom to a minimum value, and then continuously increases from top to bottom after decreasing to a minimum value.

[0011] Furthermore, the end of the locking block that enters the circular hole during use is provided with a relief slope to avoid interference with the hole wall, thereby increasing the maximum length of the locking block.

[0012] Furthermore, the hook body also includes a first stop portion disposed above the circular hole during use, and the locking pin also includes a second stop portion disposed above the circular hole during use. The first stop portion and the second stop portion are used to stop and engage radially along the circular hole, and the maximum length of the whole formed by the first stop portion and the second stop portion is greater than the inner diameter of the circular hole.

[0013] Furthermore, the first stop is a first step, which includes a shorter portion disposed at the top and a longer portion disposed at the bottom, and the transition connection between the shorter portion and the longer portion forms a first step surface. The second stop is a second step that matches the first step, and the second step has a second step surface that is complementary to the first step surface.

[0014] Furthermore, the portion of the locking pin located above the round hole during use is provided with a handle hole for inserting a finger to lift the locking pin.

[0015] Furthermore, the hook body is provided with a pin hole, which is located above the slide groove or slide rail provided on the hook body. A stop pin is fixedly connected to the pin hole. The stop pin is used to limit the extreme position of the locking pin's upward movement to prevent the locking pin from dislodging from the hook body when it moves upward.

[0016] Furthermore, the end of the lock block that enters the circular hole during use has a narrowing section, and the thickness of the narrowing section in the radial direction of the circular hole satisfies the following condition: the closer to the edge of the end of the lock block that enters the circular hole, the smaller the thickness.

[0017] The beneficial effects of the fastening hole hook provided by the present invention are as follows: the second insertion section restricts the radial movement of the first insertion section, thereby preventing the locking block from coming out of the round hole and preventing the fastening hole hook from unlocking itself. At the same time, the locking block prevents the hook body from coming out of the round hole upward, thereby making the fastening hole hook firmly stuck in the round hole.

[0018] To achieve the above objectives, the technical solution of the rigging provided by the present invention is as follows: A rigging includes a chain and hooks connected to both ends of the chain. The hooks include a hook body for connecting to the chain and a locking pin that cooperates with the hook body to fix the hook body to a circular hole during use. The hook body includes a first insertion section for inserting into the circular hole and a locking block connected below the first insertion section. The locking block is positioned below the circular hole during use, and the maximum length of the locking block is greater than the inner diameter of the circular hole. The locking pin includes a second insertion section for inserting into the circular hole. The side of the first insertion section away from the second insertion section and the side of the second insertion section away from the first insertion section are both arc-shaped for cooperating with the radial stop of the circular hole wall. One of the hook body and the locking pin is provided with a vertically extending slide rail, and the other is provided with a corresponding slide groove, so that the hook body and the locking pin are guided and slidably engaged in the vertical direction and the radial relative movement of the hook body and the locking pin is restricted.

[0019] Furthermore, the first insertion section has a clearance notch on the side near the second insertion section to prevent interference between the first insertion section and the round hole when the locking block is moved below the round hole.

[0020] Furthermore, the clearance gap is a "<" shaped gap, and the thickness of the first insertion segment continuously decreases from top to bottom to a minimum value, and then continuously increases from top to bottom after decreasing to a minimum value.

[0021] Furthermore, the end of the locking block that enters the circular hole during use is provided with a relief slope to avoid interference with the hole wall, thereby increasing the maximum length of the locking block.

[0022] Furthermore, the hook body also includes a first stop portion disposed above the circular hole during use, and the locking pin also includes a second stop portion disposed above the circular hole during use. The first stop portion and the second stop portion are used to stop and engage radially along the circular hole, and the maximum length of the whole formed by the first stop portion and the second stop portion is greater than the inner diameter of the circular hole.

[0023] Furthermore, the first stop is a first step, which includes a shorter portion disposed at the top and a longer portion disposed at the bottom, and the transition connection between the shorter portion and the longer portion forms a first step surface. The second stop is a second step that matches the first step, and the second step has a second step surface that is complementary to the first step surface.

[0024] Furthermore, the portion of the locking pin located above the round hole during use is provided with a handle hole for inserting a finger to lift the locking pin.

[0025] Furthermore, the hook body is provided with a pin hole, which is located above the slide groove or slide rail provided on the hook body. A stop pin is fixedly connected to the pin hole. The stop pin is used to limit the extreme position of the locking pin's upward movement to prevent the locking pin from dislodging from the hook body when it moves upward.

[0026] Furthermore, the end of the lock block that enters the circular hole during use has a narrowing section, and the thickness of the narrowing section in the radial direction of the circular hole satisfies the following condition: the closer to the edge of the end of the lock block that enters the circular hole, the smaller the thickness.

[0027] The beneficial effects of the rigging provided by this invention are as follows: In the rigging of this invention, the chain has hooks on both sides that fit into round holes. When binding cargo, the hooks can be directly engaged in the round holes (rigging holes) on the ship's floor or deck, making operation convenient. After the hooks are engaged in the round holes, the second insertion section can restrict the radial movement of the first insertion section, thereby preventing the locking block from dislodging from the round hole and preventing the rigging hook from unlocking itself. At the same time, the locking block can cooperate with the ship's floor or deck in the vertical direction to provide tension for the chain to secure the cargo. Attached Figure Description

[0028] Figure 1 A schematic diagram of the structure when the fastening hook is connected to the chain; Figure 2 This is a front view of the hook used for fastening. Figure 3 Top view of the hook for fastening; Figure 4 for Figure 1 Front view of the hook body; Figure 5 for Figure 1 Side view of the hook body; Figure 6 for Figure 5 AA view; Figure 7 for Figure 1 Top view of the hook body; Figure 8 for Figure 1 Schematic diagram of the central locking pin; Figure 9 for Figure 1Side view of the central locking pin; Figure 10 for Figure 1 Top view of the center locking pin; Figure 11 for Figure 1 Bottom view of the center locking pin; Figure 12 This is a schematic diagram of the structure when the anchor hook is used in conjunction with the marine floor.

[0029] Explanation of reference numerals in the attached figures: 1. Hook body; 1-1. Connecting hole; 1-2. First step; 1-3. Locking block; 1-4. Slide rail; 1-5. Clearance notch; 1-6. Narrowing section; 1-7. Clearance ramp; 1-8. First step surface; 1-9. First insertion section; 2. Locking pin; 2-1. Handle hole; 2-2. Second insertion section; 2-3. Slide groove; 2-4. Second step; 2-5. Guide ramp; 2-6. Clearance groove; 3. Chain; 4. Stop pin; 5. Marine floor. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the embodiments.

[0031] An embodiment of the fastening hook provided by the present invention: like Figures 1-12 As shown, as a basic embodiment, the fastening hole hook (hereinafter referred to as the hole hook) includes a hook body 1 for connecting the chain 3 and a locking pin 2 that cooperates with the hook body 1 to fix the hook body 1 on the round hole during use. The portion of the hook body 1 located above the round hole is provided with a connecting hole 1-1 connected to the chain 3. The hook body 1 includes a first insertion section 1-9 for inserting into the round hole and a locking block 1-3 connected below the first insertion section 1-9. During use, the locking block 1-3 is located below the round hole and the maximum length of the locking block 1-3 is greater than the inner diameter of the round hole. The locking pin 2 includes a second insertion section 2-2 for insertion into a circular hole. The side of the first insertion section 1-9 away from the second insertion section 2-2 and the side of the second insertion section 2-2 away from the first insertion section 1-9 are both arc-shaped for radial stop engagement with the wall of the circular hole. The hook body 1 is provided with a vertically extending slide rail 1-4, and the locking pin 2 is provided with a corresponding slide groove 2-3 and a clearance groove 2-6 to avoid the hook body 1. The slide groove 2-3 is disposed on the groove wall of the clearance groove 2-6, so that the hook body 1 and the locking pin 2 slide in a vertical direction and restrict the radial relative movement of the hook body 1 and the locking pin 2. Alternatively, the slide rail 1-4 can be disposed on the locking pin 2, and the slide groove 2-3 can be disposed on the hook body 1.

[0032] The following combination Figures 1-12 The principles and concepts of this invention will be explained.

[0033] like Figure 12As shown, there is a certain space below the round hole on the marine floor 5 or deck. The first insertion section 1-9 and locking block 1-3 in this invention are essentially equivalent to an inverted T-shaped "hook," with a connecting part at the upper end for connection to the chain 3, and a connecting hole 1-1 on the connecting part. The "hook" can be... Figure 12 The operation sequence shown is as follows: when the cargo is tied to the ship using the rigging formed by the hook and chain 3, the force of the chain 3 on the hook is in the upward direction. The hook is also subjected to the upward force. The upward force can be decomposed into horizontal and vertical components. The vertical component is counteracted by the locking block 1-3 and the stop in the deck or metal rigging base in the vertical direction. Therefore, in order to ensure that the hook does not come off, it is also necessary to counteract the horizontal component.

[0034] like Figures 1-12 As shown, the first insertion segment 1-9 and the second insertion segment 2-2 are simultaneously inserted into the circular hole. The radial relative movement of the first insertion segment 1-9 and the second insertion segment 2-2 is restricted by the slide rail 1-4 and the slide groove 2-3. This causes the first insertion segment 1-9 and the second insertion segment 2-2 to radially stop against the hole wall and lock into the circular hole, thereby offsetting the horizontal component force on the "hook" and preventing the "hook" from unlocking itself. After both the vertical and horizontal components of the force are offset, the "hook" will not move and can be firmly "hooked" in the circular hole. To facilitate the insertion of the second insertion segment 2-2 into the circular hole, two guide slopes 2-5 can be formed below the second insertion segment 2-2 to facilitate insertion into the circular hole during use. The two guide slopes 2-5 form a "V" shape. Of course, the lower end face of the second insertion segment 2-2 can always be located in the same horizontal plane.

[0035] When it is necessary to remove the "hook", simply move the locking pin 2 upwards to disengage the second insertion section 2-2 from the round hole. At this time, the first insertion section 1-9 can be moved radially, thus allowing it to be pressed... Figure 12 Remove the "hook" in the reverse order shown.

[0036] In summary, in this invention, the rigging with hooks can be used with the round holes already present on the deck or marine floor 5 to secure cargo, without the need for additional machining of threaded holes to install rigging rings, making operation convenient and saving time and effort.

[0037] In this invention, in order to increase the maximum length of the locking block 1-3 and increase the stopping area between the locking block 1-3 and the deck or metal fastening base, the following improvements were made to the "hook".

[0038] like Figures 1-12As shown, in a preferred embodiment, the first insertion segment 1-9 is provided with a clearance notch 1-5 on the side near the second insertion segment 2-2 to avoid interference between the first insertion segment 1-9 and the round hole when the locking block 1-3 is moved below the round hole, so as to maximize the maximum length of the locking block 1-3 and increase the connection strength between the first insertion segment 1-9 and the locking block 1-3 and the connecting part.

[0039] The clearance notch 1-5 can be a "<" shaped notch, and the thickness of the first insertion segment 1-9 decreases from top to bottom to a minimum value, and then increases from top to bottom after reaching the minimum value. The clearance notch 1-5 can also be an arc-shaped notch or an irregularly shaped notch, as long as it can ensure that the locking block 1-3 can be fully inserted below the circular hole.

[0040] In other embodiments, the avoidance notch 1-5 may not be provided. For example, the end face of the first insertion segment 1-9 near the second insertion segment 2-2 is a vertical plane. At the same position, the thickness of the first insertion segment 1-9 in this embodiment is the same as the thickness of the thinnest part of the first insertion segment 1-9 in the embodiment with the "<" shaped notch.

[0041] To further increase the maximum length of locking blocks 1-3, and to increase the stopping area between locking blocks 1-3 and the deck or metal mooring base, such as... Figures 1-12 As shown, the end of the locking block 1-3 that enters the circular hole during use is provided with a relief slope 1-7 to avoid interference with the hole wall, thereby increasing the maximum length of the locking block 1-3; at the same time, as Figure 12 As shown, due to the limitation of the height of the space below the circular hole in the marine floor 5, the side of the locking block 1-3 away from the avoidance ramp 1-7 is also provided with a ramp to avoid interference between the locking block 1-3 and the marine floor 5.

[0042] For any diameter of the circular hole, the closer to the edge of the diameter, the shorter the perpendicular line corresponding to the diameter, meaning the diameter is closer to the wall of the circular hole, and therefore the narrower the space for locking blocks 1-3 to enter. In a preferred embodiment, such as... Figure 5 As shown, the end of the locking block 1-3 that enters the circular hole during use has a narrowing section 1-6. The thickness of the narrowing section 1-6 in the radial direction of the circular hole satisfies the following condition: the closer to the edge of the end of the locking block 1-3 that enters the circular hole, the smaller the thickness, thereby adapting to the narrower space near the edge of the circular hole diameter and increasing the maximum length of the locking block 1-3.

[0043] In this invention, to improve the working condition of the hole hook under lateral force and prevent the locking pin 2 from popping out, such as... Figures 1-12As shown, the hook body 1 also includes a first stop portion positioned above the circular hole during use, and the locking pin 2 also includes a second stop portion positioned above the circular hole during use. The first and second stop portions are used for radial stop engagement along the circular hole, and the maximum length of the entire structure formed by the first and second stop portions is greater than the inner diameter of the circular hole. The first and second stop portions optimize the radial force transmission path between the hook body 1 and the locking pin 2. In this case, not only can radial force be transmitted at the engagement point between the slide rail 1-4 and the slide groove 2-3, but radial force can also be transmitted between the first and second stop portions.

[0044] Preferably, the first stop is a first step 1-2, which includes a shorter portion disposed at the top and a longer portion disposed at the bottom. The transition connection between the shorter portion and the longer portion forms a first step surface 1-8. The second stop is a second step 2-4 that matches the first step 1-2. The second step 2-4 has a second step surface that is complementary to the first step surface 1-8, so that the radial force can be better transmitted between the hook body 1 and the locking pin 2.

[0045] When using slings to secure goods, two workers can hold both ends of the sling and, after tightening it, simultaneously engage the hooks at both ends into the round holes. Alternatively, one worker can operate the sling. First, engage the hook at one end into the round hole. Because the maximum length of the combined length of the first and second stops is greater than the inner diameter of the round hole, the hook will not sag, especially the "hook" itself. Then, after tightening the sling, engage the hook at the other end into the round hole.

[0046] To facilitate unlocking the "hook", in a preferred embodiment, such as Figures 1-12 As shown, the locking pin 2 is provided with a lifting hole 2-1 for inserting a finger to lift the locking pin 2 during use. The lifting hole 2-1 is located above the round hole during use. The locking pin 2 can be easily lifted through the lifting hole 2-1 so that the second insertion part can be withdrawn from the round hole.

[0047] To prevent the locking pin 2 from coming out upwards, in a preferred embodiment, such as Figures 1-12 As shown, the hook body 1 is provided with a pin hole, which is located above the slide groove 2-3 or slide rail 1-4 provided on the hook body 1. A stop pin 4 is fixedly connected to the pin hole. The stop pin 4 is used to limit the extreme position of the locking pin 2 when it moves upward, so as to prevent the locking pin 2 from falling out of the hook body 1 when it moves upward.

[0048] In this invention, the locking pin 2 is limited to the upper limit position by the stop pin 4 and the lower limit position by the first step 1-2, thereby limiting the locking pin 2 on the hook body 1 and preventing the locking pin 2 from falling off the hook body 1.

[0049] Embodiments of the rigging provided by the present invention: Reference Figure 1 As shown, the rigging includes a chain 3 and hooks connected to both ends of the chain 3. The hooks are any of the types of rigging hooks in the embodiments of the present invention, and will not be described in detail here.

[0050] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features, or organically combine different embodiments to create the embodiments shown in the accompanying drawings. Of course, those skilled in the art can also create other embodiments not shown in the accompanying drawings. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fastening hook, comprising a hook body for connecting a chain, characterized in that, It also includes a locking pin that cooperates with the hook body to fix the hook body onto the round hole during use; the hook body includes a first insertion section for insertion into the round hole and a locking block connected below the first insertion section. The locking block is positioned below the round hole during use and the maximum length of the locking block is greater than the inner diameter of the round hole. The locking pin includes a second insertion section for insertion into the round hole. The side of the first insertion section away from the second insertion section and the side of the second insertion section away from the first insertion section are both arc-shaped for cooperating with the radial stop of the round hole wall; one of the hook body and the locking pin is provided with a vertically extending slide rail, and the other is provided with a corresponding slide groove, so that the hook body and the locking pin are guided and slidably engaged in the vertical direction and the radial relative movement of the hook body and the locking pin is restricted.

2. The fastening hook as described in claim 1, characterized in that, The first insertion section has a clearance notch on the side near the second insertion section to prevent interference between the first insertion section and the round hole when the locking block is moved below the round hole.

3. The fastening hook as described in claim 2, characterized in that, The clearance gap is a "<" shaped gap, and the thickness of the first insertion segment decreases from top to bottom to a minimum value, and then increases from top to bottom after decreasing to a minimum value.

4. The fastening hook as described in any one of claims 1 to 3, characterized in that, When in use, the end of the locking block that enters the round hole is provided with a relief slope to avoid interference with the hole wall, thereby increasing the maximum length of the locking block.

5. The fastening hook as described in any one of claims 1 to 3, characterized in that, The hook body also includes a first stop portion disposed above the circular hole during use, and the locking pin also includes a second stop portion disposed above the circular hole during use. The first stop portion and the second stop portion are used to stop and engage radially along the circular hole, and the maximum length of the whole formed by the first stop portion and the second stop portion is greater than the inner diameter of the circular hole.

6. The fastening hook as described in claim 5, characterized in that, The first stop is a first step, which includes a shorter part located at the top and a longer part located at the bottom. The transition connection between the shorter part and the longer part forms a first step surface. The second stop is a second step that matches the first step. The second step has a second step surface that is complementary to the first step surface.

7. The fastening hook as described in any one of claims 1 to 3, characterized in that, The locking pin has a handle hole on the part above the round hole for inserting fingers to lift the locking pin.

8. The fastening hook as described in any one of claims 1 to 3, characterized in that, The hook body is provided with a pin hole, which is located above the slide groove or slide rail provided on the hook body. A stop pin is fixedly connected to the pin hole. The stop pin is used to limit the extreme position of the locking pin's upward movement to prevent the locking pin from dislodging from the hook body when it moves upward.

9. The fastening hook as described in any one of claims 1 to 3, characterized in that, When the lock block is in use, the end that enters the circular hole has a narrowing section. The thickness of the narrowing section in the radial direction of the circular hole satisfies the following condition: the closer to the edge of the end of the lock block that enters the circular hole, the smaller the thickness.

10. A rigging device, comprising a chain and hooks connected to both ends of the chain, characterized in that, The hook is the fastening hook as described in any one of claims 1 to 9.

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