A hidden type lifting hook with a limiting block

Abstract

This utility model relates to the field of lifting equipment technology, specifically providing a concealed limit block hook, including a hook body, a locking block, and a limit block. The hook body has a mounting groove at its connecting end, and the locking block passes through and is rotatably connected to the mounting groove. A slot is formed on the side of the locking block facing the inside of the mounting groove. The limit block includes a connecting part and a locking part. The connecting part is rotatably connected to the mounting groove and fixedly connected to the locking part. One end of the locking part can engage with the slot, and when one end of the locking part is inside the slot, the other end is inside the mounting groove. When the locking part engages with the slot, it effectively restricts the movement of the locking block. At this time, the limit block is completely located within the mounting groove, making it less susceptible to impact from external objects, preventing displacement or damage to the limit block, thereby reducing the probability of accidental opening of the locking block and minimizing the risk of the lifted item falling off.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, specifically providing a limit block concealed hook. Background Technology

[0002] Lifting equipment, as a key piece of equipment in industrial and engineering construction, is widely used in material handling, assembly operations, and heavy equipment hoisting. Among these components, the hook, as a crucial part of the lifting equipment that directly bears the load, directly affects the safety of the entire hoisting process. Especially in complex and space-constrained operating environments such as port loading and unloading, construction sites, and large manufacturing workshops, where the hook frequently comes into contact with external objects, its stability and anti-interference capabilities are of paramount importance.

[0003] Currently, common hook structures typically include a hook body 10, a locking block 20, and a limiting block 30. For example... Figure 1 As shown, the limiting block 30 is mostly set outside the hook body 10 to limit whether the locking block 20 can be opened.

[0004] The aforementioned exposed limiting block structure is susceptible to impact from external objects during actual use, which may cause the limiting block 30 to shift or be damaged, thereby causing the locking block 20 to open unexpectedly, posing a significant safety risk of the hoisted item falling off. Utility Model Content

[0005] This utility model addresses the shortcomings of the existing technology by providing a limit block concealed hook that is reasonably designed, simple in structure, and safe to use.

[0006] The technical solution adopted by this utility model to solve its technical problem is: A hook with a concealed limit block includes a hook body, a locking block, and a limit block; The hook body has a mounting groove at its connecting end, the locking block passes through the mounting groove and is rotatably connected to it, and the locking block has a slot on one side facing the inside of the mounting groove. The limiting block includes a connecting part and a snap-fit ​​part. The connecting part is rotatably connected to the mounting groove, and the connecting part is fixedly connected to the snap-fit ​​part. One end of the snap-fit ​​part can snap into the slot, and when one end of the snap-fit ​​part is inside the slot, the other end of the snap-fit ​​part is inside the mounting groove.

[0007] Furthermore, the snap-fit ​​portion has an arc-shaped structure, and the side of the snap-fit ​​portion away from the connecting portion is concave.

[0008] Furthermore, an arc-shaped groove is formed at the other end of the mounting groove, away from the locking block and close to the snap-fit ​​part, and the arc-shaped groove is connected to the outside.

[0009] Furthermore, a clearance portion is provided at the end of the lock block away from the mounting groove. The clearance portion is located on the side of the lock block facing the hook body overlap end, and protrusions are fixedly installed on both sides of the outer end of the clearance portion. The hook body has grooves on both sides of the overlapping end, and the two protrusions can be inserted into the corresponding grooves respectively, and the overlapping end of the hook body can be located in the avoidance part.

[0010] Furthermore, the connecting part and the snap-fit ​​part are an integral structure.

[0011] Furthermore, the locking block includes an annular portion and a strip-shaped portion, which are integrally formed.

[0012] Compared with the prior art, the concealed limit block hook of this utility model has the following advantages: When the locking part engages with the slot, it can effectively restrict the movement of the locking block. At this time, the limiting block is completely located in the mounting slot, making it less susceptible to impact from external objects. This prevents the limiting block from shifting or being damaged, thereby reducing the probability of the locking block opening accidentally and minimizing the risk of hoisted items falling off. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Appendix Figure 1 This is a structural schematic diagram of an existing exposed limit block hook; Appendix Figure 2 A schematic diagram of a limit block concealed hook structure Figure 1 ; Appendix Figure 3 A schematic diagram of a limit block concealed hook structure Figure 2 .

[0015] The markings in the attached diagram represent: 100 - Hook body; 110 - Mounting groove; 120 - Arc groove; 130 - Protrusion; 200-Locking block; 210-Annular part; 220-Strip part; 230-Slot; 240-Allowing part; 250-Protrusion; 300 - Limiting block; 310 - Connecting part; 320 - Snap-fit ​​part; 400-pin. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0017] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "left," and "right" generally refer to the upper, lower, left, and right as shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself.

[0018] The following is a preferred embodiment: Appendix Figure 2 A schematic diagram of a limit block concealed hook structure Figure 1 , attached Figure 3 A schematic diagram of a limit block concealed hook structure Figure 2 . Reference Figure 2-3 As shown, the limit block concealed hook in this embodiment includes a hook body 100, a locking block 200 and a limit block 300; The hook body 100 has a mounting groove 110 at its connecting end. The locking block 200 passes through the mounting groove 110 and is rotatably connected to it. The locking block 200 has a slot 230 on one side facing the inside of the mounting groove 110.

[0019] It should be noted that the top and both sides of the mounting groove 110 are open to the outside. The locking block 200 is connected to the mounting groove 110 by a pin 400, and both the hook body 100 and the locking block 200 are pre-set with shaft holes that match the pin 400.

[0020] It is easy to understand that after the pin 400 passes through the shaft hole to connect the hook body 100 and the locking block 200, it is press-fitted and riveted by machining so that the hook body 100 and the locking block 200 are rotatably connected.

[0021] The limiting block 300 includes a connecting part 310 and a snap-fit ​​part 320. The connecting part 310 is rotatably connected to the mounting groove 110, and the connecting part 310 is fixedly connected to the snap-fit ​​part 320. One end of the snap-fit ​​part 320 can snap into the slot 230, and when one end of the snap-fit ​​part 320 is located inside the slot 230, the other end of the snap-fit ​​part 320 is located inside the mounting groove 110.

[0022] Reference Figure 2 As shown, it should be noted that the end of the snap-fit ​​part 320 that mates with the snap-fit ​​groove 230 has a wedge-shaped structure.

[0023] Furthermore, the connecting part 310 is rotatably connected to the mounting groove 110 by a cylindrical pin, and a spring or torsion spring (not shown in the figure) is provided at the connection between the connecting part 310 and the mounting groove 110 so that when one end of the snap-fit ​​part 320 is located inside the snap-fit ​​groove 230, the user needs to overcome the elastic force of the spring or torsion spring to separate the two, thereby further improving the safety of the hook.

[0024] In practice, the connecting part 310 and the snap-fit ​​part 320 are an integral structure.

[0025] In specific implementation, the locking block 200 includes an annular portion 210 and a strip portion 220, and the annular portion 210 and the strip portion 220 are an integral structure.

[0026] It is readily understood that the annular portion 210 is used to connect a lifting rope or lifting chain, etc. A pin 400 is located at one end of the strip portion 220 near the annular portion 210. In other embodiments, the pin 400 may also be located at the connection between the strip portion 220 and the annular portion 210. This application does not impose any limitations on this.

[0027] When using the concealed limit block hook of this utility model, the annular portion 210 needs to swing downwards while the limit block 300 swings upwards to disengage its locking portion 320 from the slot 230, allowing the locking block 200 to rotate around the pin 400 and open. Since the hook body 100 needs to be connected to the load being lifted, and the annular portion 210 needs to be connected to the lifting device, the downward swing of the annular portion 210 means that the hook is no longer subject to the weight of the load being lifted and / or the tension of the lifting device, thus opening the locking block 200 when the hook is unloaded.

[0028] In this embodiment, when the latching part 320 engages with the slot 230, it can effectively restrict the movement of the locking block 200. At this time, the limiting block 300 is completely located within the mounting slot 110, making it less susceptible to impact from external objects. This prevents the limiting block 300 from shifting or being damaged, thereby reducing the probability of the locking block 200 being accidentally opened and reducing the risk of the hoisted item falling off.

[0029] In specific implementation, the snap-fit ​​part 320 has an arc-shaped structure, and the side of the snap-fit ​​part 320 away from the connecting part 310 is concave.

[0030] In this embodiment, the arc-shaped snap-fit ​​part 320 facilitates user operation and improves operational comfort.

[0031] In the specific implementation process, an arc-shaped groove 120 is opened at the other end of the mounting groove 110 away from the locking block 200 and close to the snap-fit ​​part 320, and the arc-shaped groove 120 is connected to the outside.

[0032] In this embodiment, the arc-shaped groove 120 provides sufficient space for the user to operate the latching part 320, so that the user can operate the latching part 320 manually without the aid of tools.

[0033] Reference Figure 3 As shown, in the specific implementation process, a clearance part 240 is provided at the end of the locking block 200 away from the mounting groove 110. The clearance part 240 is provided on the side of the locking block 200 facing the overlapping end of the hook body 100. Protrusions 250 are fixedly installed on both sides of the outer end of the clearance part 240.

[0034] It is easy to understand that the protrusion 250 and the locking block 200 are an integral structure. Both the clearance portion 240 and the protrusion 250 are located at the end of the strip portion 220 away from the annular portion 210.

[0035] The hook body 100 has grooves 130 on both sides of the overlapping end, and the two protrusions 250 can be inserted into the corresponding grooves 130 respectively, and the overlapping end of the hook body 100 can be located in the avoidance part 240.

[0036] In this embodiment, when the two protrusions 250 are respectively inserted into the corresponding grooves 130, and the overlapping end of the hook body 100 is located in the avoidance part 240, the hook body 100 is hooked with the locking block 200. During the hoisting process, under the action of the weight of the hoisted object and the pulling force of the lifting device, the hook body 100 and the locking block 200 can be in close contact, thereby improving the stability of the hook during the hoisting process.

[0037] The embodiments described above are merely one preferred embodiment of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution should be included within the protection scope of this utility model.

Claims

1. A limit block concealed hook, comprising a hook body (100), a locking block (200) and a limit block (300); The hook (100) has a mounting groove (110) at its connecting end. The locking block (200) passes through the mounting groove (110) and is rotatably connected to it. The locking block (200) has a slot (230) on one side facing the inside of the mounting groove (110). The limiting block (300) includes a connecting part (310) and a snap-fit ​​part (320). The connecting part (310) is rotatably connected to the mounting groove (110), and the connecting part (310) is fixedly connected to the snap-fit ​​part (320). One end of the snap-fit ​​part (320) can snap into the slot (230), and when one end of the snap-fit ​​part (320) is inside the slot (230), the other end of the snap-fit ​​part (320) is inside the mounting groove (110).

2. The limit block concealed hook according to claim 1, characterized in that, The snap-fit ​​part (320) has an arc-shaped structure, and the side of the snap-fit ​​part (320) away from the connecting part (310) is concave.

3. The limit block concealed hook according to claim 1, characterized in that, An arc-shaped groove (120) is provided at the other end of the mounting groove (110) away from the locking block (200) and close to the snap-fit ​​part (320), and the arc-shaped groove (120) is connected to the outside.

4. A limit block concealed hook according to any one of claims 1-3, characterized in that, The locking block (200) has a clearance part (240) at one end away from the mounting groove (110). The clearance part (240) is located on the side of the locking block (200) facing the overlapping end of the hook body (100). Protrusions (250) are fixedly installed on both sides of the outer end of the clearance part (240). The hook body (100) has grooves (130) on both sides of the overlapping end, and the two protrusions (250) can be inserted into the corresponding grooves (130) respectively, and the overlapping end of the hook body (100) can be located in the avoidance part (240).

5. A limit block concealed hook according to any one of claims 1-3, characterized in that, The connecting part (310) and the snap-fit ​​part (320) are an integral structure.

6. A limit block concealed hook according to any one of claims 1-3, characterized in that, The locking block (200) includes an annular portion (210) and a strip portion (220), which are integral structures.

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