Automatic locking device for lifting hook

Abstract

The utility model relates to the technical field of lifting hooks, in particular to an automatic locking device for a lifting hook, which comprises a lifting hook body, a mounting part, a limiting rod, a spring a and a fixing part, the lifting hook body is provided with an opening, the mounting part is connected with one end of the opening, and the fixing part is connected with the other end of the opening and located above the mounting part; the installation part is provided with a blind hole, the limiting rod is slidably connected with the inner wall of the blind hole, and the spring a is connected with the lower end of the limiting rod and the end of the blind hole and is in a compressed state. A groove is formed in the fixing part, the end of the limiting rod is connected with the groove in a matched mode, and a limiting assembly is arranged on the fixing part and connected with the limiting rod in a matched mode. According to the lifting hook, the lifting hook body is locked through the limiting rod and the limiting assembly, so that the lifting hook body is more stable in use.

Description

Technical Field

[0001] The utility model relates to the technical field of hooks, in particular to an automatic locking device for hooks. Background Art

[0002] The hook is one of the common components of lifting equipment in loading and unloading machinery. When in use, the hook is hooked on the lifting ring of the object to be lifted. Before the lifting equipment is lifted, the hook must be supported manually to prevent the hook from falling off the lifting ring, otherwise the normal lifting task cannot be performed, and when the rope is put on the hook, the rope slides inside the hook, and the lifted cargo shakes violently.

[0003] The Chinese patent with authorization announcement number CN219098522U discloses a lockable hook, comprising: a slotted hook body, a connecting block and a slotted arc block, wherein the top of the slotted hook body is fixedly connected with the connecting block. The utility model enables a worker to pull a pull rod, and under the nesting of two sets of connecting rods and two sets of sleeve rods, and the connection of two sets of springs, the movable plate drives the two sets of limiting rods to separate from the arc plate and the slotted arc block, pulls the arc plate, so that the two sets of limiting bars slide along the inner wall of the slotted hook body, separates the arc plate from the slotted arc block, embeds the connecting rope for binding goods into the slotted hook body, pulls the pull rod and the arc plate, so that the arc plate fits with the slotted arc block, loosens the pull rod, so that the two sets of limiting rods fit with the inner wall of the arc plate and the slotted arc block, achieves the purpose of locking the hook, avoids slippage between the rope for binding goods and the hook during lifting, and prevents the goods from falling to the ground.

[0004] However, the above technical solution has the following defects: the arc plate in the above-mentioned lockable hook is slidably connected to the hook body, and the other end of the arc plate is fixed to the arc block by means of a locking mechanism. However, the hook shakes during the movement, causing the connecting rod and the limit rod to shake, and the connection between the limit rod and the arc plate becomes loose, and the fixing stability of the arc plate is poor. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and proposes an automatic locking device for a hook.

[0006] The technical solution of the utility model: an automatic locking device for a hook, comprising a hook body, a mounting portion, a limit rod, a spring a and a fixing portion;

[0007] The hook body is provided with an opening, the mounting portion is connected to one end of the opening, the fixing portion is connected to the other end of the opening, and the fixing portion is located above the mounting portion;

[0008] The mounting portion is provided with a blind hole, the limit rod is slidably connected to the inner wall of the blind hole, the spring a is connected to the lower end of the limit rod and the end of the blind hole, and the spring a is in a compressed state;

[0009] The fixing part is provided with a groove, the end of the limiting rod is connected with the groove in cooperation, the fixing part is provided with a limiting component, and the limiting component is connected with the limiting rod in cooperation.

[0010] Preferably, a moving block is provided on the limiting rod, a mounting portion is provided with a mounting groove, the moving block is slidably connected to the mounting groove, and an end of the moving block extends out of the mounting portion.

[0011] Preferably, a plurality of protrusions are provided on the surface of the moving block.

[0012] Preferably, the limiting assembly includes a mounting ring, a limiting block and a spring b;

[0013] The fixing part is provided with a plurality of mounting holes, the limiting blocks are provided with a plurality of holes corresponding to the mounting holes one by one, and the limiting blocks are connected with the corresponding mounting holes in a sliding manner;

[0014] The surface of the limit rod is provided with a plurality of limit holes, and the limit blocks are matched and connected with the corresponding limit holes;

[0015] A slide groove is provided on the inner wall of the mounting hole, a slider is provided on the limit block, the slider is slidably connected with the slide groove, a spring b connects one end of the slider close to the limit rod and the end of the slide groove, and the spring b is in a compressed state;

[0016] The mounting ring is threadably connected to the fixing portion, and the inner circumference of the mounting ring presses the end of the limiting block.

[0017] Preferably, a wedge surface is provided at one end of the limiting block close to the mounting ring.

[0018] Preferably, a limiting ring is provided at the lower end of the fixing portion.

[0019] Compared with the prior art, the above technical solution of the utility model has the following beneficial technical effects:

[0020] 1. The hook body of the utility model is doubly locked by the limit rod and the limit assembly, so that the hook body is more stable when in use.

[0021] 2. When the utility model is used, the sliding moving block can drive the limit rod to slide in the blind hole, so that the limit rod is away from the fixed part, and the hook can be opened for use.

[0022] 3. In the utility model, the mounting ring is rotated, and the mounting ring gradually moves downward to squeeze the wedge surface of the limit block. The limit block slides in the mounting hole and cooperates with the upper limit hole of the limit rod to fix the limit rod; the mounting ring is rotated in the opposite direction, the mounting ring is away from the limit block, and the spring b drives the limit block away from the limit hole to release the limit rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional diagram of a closed state of an embodiment of the utility model.

[0024] Figure 2 The utility model is a three-dimensional diagram of an automatic locking device for a hook in an open state.

[0025] Figure 3 The utility model is a cross-sectional view of an automatic locking device for a hook.

[0026] Figure 4 for Figure 2 Schematic diagram of the internal structure at A in the middle.

[0027] Figure 5 for Figure 3 Schematic diagram of the structure at B in the figure.

[0028] Figure numerals: 1. hook body; 2. mounting part; 3. limiting rod; 4. mounting ring; 5. limiting hole; 6. limiting block; 7. moving block; 8. spring a; 9. limiting ring; 10. slider; 11. spring b; 12. wedge surface; 13. fixing part. DETAILED DESCRIPTION

[0029] Embodiment 1

[0030] like Figure 1-Figure 5 As shown, the utility model provides an automatic locking device for a hook, comprising a hook body 1, a mounting portion 2, a limiting rod 3, a spring a8 and a fixing portion 13;

[0031] The hook body 1 is provided with an opening, the mounting portion 2 is connected to one end of the opening, the fixing portion 13 is connected to the other end of the opening, and the fixing portion 13 is located above the mounting portion 2;

[0032] The mounting portion 2 is provided with a blind hole, the limiting rod 3 is slidably connected to the inner wall of the blind hole, the spring a8 is connected to the lower end of the limiting rod 3 and the end of the blind hole, and the spring a8 is in a compressed state;

[0033] The fixing portion 13 is provided with a groove, and the end of the limiting rod 3 is connected with the groove in a cooperative manner. The fixing portion 13 is provided with a limiting component, and the limiting component is connected with the limiting rod 3 in a cooperative manner.

[0034] In the utility model, when in use, the limit rod 3 is slid downward, the spring a8 is compressed, the material is put on the hook body 1, the limit rod 3 is loosened, the spring a8 drives the limit rod 3 to cooperate with the groove on the fixing part 13, and the hook body 1 can be initially closed. When the limit rod 3 needs to be further fixed, the limit assembly on the fixing part 13 is used to cooperate with the limit rod 3 to further fix the limit rod 3, so that the hook body 1 is more stable; in the utility model, the hook body 1 is doubly locked by the limit rod 3 and the limit assembly, so that the hook body 1 is more stable when in use.

[0035] Embodiment 2

[0036] like Figure 1-Figure 3As shown, the utility model proposes an automatic locking device for a hook. Compared with the first embodiment, in this embodiment, a moving block 7 is provided on the limit rod 3, and the mounting part 2 is provided with a mounting groove. The moving block 7 is slidably connected to the mounting groove, and the end of the moving block 7 extends out of the mounting part 2.

[0037] Furthermore, a plurality of protrusions are provided on the surface of the moving block 7 to increase the friction between the finger and the surface of the moving block 7 .

[0038] In this embodiment, when in use, the sliding moving block 7 can drive the limiting rod 3 to slide in the blind hole, so that the limiting rod 3 is away from the fixing portion 13, and the hook can be opened for use.

[0039] Embodiment 3

[0040] like Figure 3-Figure 5 As shown, the utility model provides an automatic locking device for a hook. Compared with the first embodiment, the limit assembly in this embodiment includes a mounting ring 4, a limit block 6 and a spring b11;

[0041] The fixing portion 13 is provided with a plurality of mounting holes, the limiting blocks 6 are provided with a plurality of mounting holes corresponding one to one, and the limiting blocks 6 are connected with the corresponding mounting holes in a sliding fit;

[0042] A plurality of limiting holes 5 are provided on the surface of the limiting rod 3, and the limiting blocks 6 are matched and connected with the corresponding limiting holes 5;

[0043] A slide groove is provided on the inner wall of the mounting hole, a slider 10 is provided on the limit block 6, the slider 10 is slidably connected with the slide groove, a spring b11 connects one end of the slider 10 close to the limit rod 3 and the end of the slide groove, and the spring b11 is in a compressed state;

[0044] The mounting ring 4 is threadably connected to the fixing portion 13 , and the inner circumference of the mounting ring 4 presses the end of the limiting block 6 .

[0045] Furthermore, a wedge surface 12 is provided at one end of the limiting block 6 close to the mounting ring 4 .

[0046] Furthermore, a limiting ring 9 is provided at the lower end of the fixing portion 13 .

[0047] In this embodiment, when the limit rod 3 needs to be fixed, the mounting ring 4 is rotated, and the mounting ring 4 gradually moves downward to squeeze the wedge surface 12 of the limit block 6. The limit block 6 slides in the mounting hole, and the spring b11 is further compressed. The limit block 6 is matched and connected with the upper limit hole 5 of the limit rod 3, so that the limit rod 3 can be fixed. When the limit rod 3 needs to be loosened, the mounting ring 4 is rotated in the opposite direction, and the mounting ring 4 moves away from the limit block 6. The spring b11 drives the limit block 6 away from the limit hole 5 to release the limit rod 3. The limit assembly structure is simple to operate and more reliable to use.

[0048] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An automatic locking device for a hook, characterized in that: It comprises a hook body (1), a mounting portion (2), a limiting rod (3), a spring a (8) and a fixing portion (13); The hook body (1) is provided with an opening, the mounting portion (2) is connected to one end of the opening, the fixing portion (13) is connected to the other end of the opening, and the fixing portion (13) is located above the mounting portion (2); The mounting portion (2) is provided with a blind hole, the limiting rod (3) is slidably connected to the inner wall of the blind hole, the spring a (8) is connected to the lower end of the limiting rod (3) and the end of the blind hole, and the spring a (8) is in a compressed state; The fixing part (13) is provided with a groove, the end of the limiting rod (3) is cooperatively connected to the groove, and the fixing part (13) is provided with a limiting assembly, which is cooperatively connected to the limiting rod (3).

2. The automatic locking device for a hook according to claim 1, characterized in that: A moving block (7) is provided on the limiting rod (3), a mounting portion (2) is provided with a mounting groove, the moving block (7) is slidably connected to the mounting groove, and an end of the moving block (7) extends out of the mounting portion (2).

3. The automatic locking device for a hook according to claim 2, characterized in that: A plurality of protrusions are arranged on the surface of the moving block (7).

4. The automatic locking device for a hook according to claim 1, characterized in that: The limiting assembly comprises a mounting ring (4), a limiting block (6) and a spring b (11); The fixing portion (13) is provided with a plurality of mounting holes, the limiting blocks (6) are provided with a plurality of mounting holes corresponding one to one, and the limiting blocks (6) are connected to the corresponding mounting holes in a sliding manner; A plurality of limiting holes (5) are provided on the surface of the limiting rod (3), and the limiting blocks (6) are matched and connected with the corresponding limiting holes (5); A slide groove is provided on the inner wall of the mounting hole, a slider (10) is provided on the limit block (6), the slider (10) is slidably connected with the slide groove, a spring b (11) is connected to an end of the slider (10) close to the limit rod (3) and an end of the slide groove, and the spring b (11) is in a compressed state; The mounting ring (4) is threadably connected to the fixing portion (13), and the inner circumference of the mounting ring (4) presses the end of the limiting block (6).

5. The automatic locking device for a hook according to claim 4, characterized in that: A wedge surface (12) is provided at one end of the limiting block (6) close to the mounting ring (4).

6. The automatic locking device for a hook according to claim 4, characterized in that: A limiting ring (9) is provided at the lower end of the fixing portion (13).

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