A crane hook
By setting a limiting component on the outside of the crane hook, the problem of anti-detachment pin failure in the prior art is solved, and a stable hooking and anti-detachment effect for larger objects is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING SAIZHUO MASCH MFG CO LTD
- Filing Date
- 2025-10-24
- Publication Date
- 2026-07-14
AI Technical Summary
When existing crane hooks are used to hook thicker ropes, the anti-detachment pins are prone to failure, making it impossible to effectively prevent the rope from coming off the hook.
A limiting component was designed and installed on the outside of the hook body. It slides to the opening of the hook to limit the movement and avoids occupying the internal space of the hook. The sliding of the limiting component and the ratchet structure achieve the anti-unhooking effect.
It effectively prevents disengagement when hooking large objects, avoids the limiting components occupying the internal space of the hook, and ensures the stability and safety of the hook.
Smart Images
Figure CN224493467U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crane technology, specifically to a crane hook. Background Technology
[0002] Cranes use hooks to lift and lower heavy objects vertically and move them horizontally in space. To prevent detachment in case of improper operation or equipment failure, an anti-detachment pin is usually installed at the opening of the hook. For example, a safety auxiliary device for anti-detachment pins of crane hooks disclosed in application number CN202320319386.7 can prevent the hook from detaching.
[0003] In practice, taking rope hooking as an example, when using this type of hook to hook ropes, because the anti-detachment pin itself occupies a certain space in the hook opening, thicker ropes or multiple ropes will interfere with the anti-detachment pin and cannot be inserted; moreover, even if the hooking is completed, the thicker rope will also press the anti-detachment pin against the inside of the hook and cannot be unscrewed smoothly, thus causing the anti-detachment pin to fail. Utility Model Content
[0004] In view of the shortcomings of the prior art, the present invention provides a crane hook, which can solve or at least alleviate one or more of the above-mentioned problems and other problems existing in the prior art.
[0005] This utility model provides a crane hook, comprising:
[0006] Mounting base, which is connected to the crane body via a wire rope;
[0007] A crossbeam is connected to the lower end of the mounting base;
[0008] A hook body, the upper end of which is connected to the crossbeam; and
[0009] A limiting component is provided, which is slidably disposed on the crossbeam along the vertical direction. The limiting component can slide vertically to the opening of the hook body for limiting, and the limiting component can remain stationary on the crossbeam.
[0010] Preferably, the crane hook further includes a mounting block; the upper end of the mounting block is connected to the lower end of the crossbeam; the mounting block is located on the upper side of the hook body; vertical sliding grooves are formed on the two opposite outer sides of the mounting block;
[0011] The limiting component includes:
[0012] The U-shaped slider has protrusions on the inner sides of its two arms, and the protrusions slide vertically into the corresponding grooves.
[0013] Two connecting plates are provided, one on each side of the mounting block, with the upper end of each connecting plate connected to the U-shaped slider; and
[0014] A limiting block is connected to the end of the two connecting plates away from the mounting block, and the lower end of the limiting block is opposite to the opening of the hook body.
[0015] Preferably, the mounting block has a plurality of vertically distributed first ratchet blocks on the side opposite to the upper end of the hook body; a ratchet groove is formed between two adjacent first ratchet blocks;
[0016] The U-shaped slider has a mating window corresponding to the first ratchet block;
[0017] The limiting component also includes:
[0018] A pull plate, the upper end of which is hinged to the U-shaped slider away from the mounting block;
[0019] A second ratchet block, one end of which is connected to the side of the pull plate facing the U-shaped slider, and the other end of which can pass through the mating window and be inserted into the corresponding ratchet groove; and
[0020] A first spring, the two ends of which are respectively connected to the upper end of the U-shaped slider and the lower end of the crossbeam.
[0021] Preferably, the crossbeam has vertical mounting holes;
[0022] The hook body includes:
[0023] A columnar sliding part, wherein the columnar sliding part slides vertically into the mounting hole;
[0024] A limiting part, the limiting part being connected to the upper end of the columnar sliding part, and the lower end of the limiting part being able to abut against the upper end of the crossbeam; and
[0025] The hook portion, the upper end of which is connected to the lower end of the columnar sliding portion;
[0026] The U-shaped slider can be moved by sliding the columnar sliding part.
[0027] Preferably, the crane hook further includes:
[0028] A first rack is connected to the side of the mounting block opposite to the first ratchet block;
[0029] A drive slider is slidably connected vertically to the side of the columnar sliding portion near the mounting block;
[0030] The second rack is connected to the drive slider;
[0031] A gear, rotatably connected to the cylindrical sliding portion, the gear's axis perpendicular to the centerline of the cylindrical sliding portion, the gear located between the first rack and the second rack, and meshing with both the first rack and the second rack simultaneously; and
[0032] A movable block is connected to the U-shaped slider. The movable block is located at the lower end of the driving slider and can abut against the lower end of the driving slider.
[0033] The columnar sliding part is subjected to an upward external force.
[0034] Preferably, the crane hook further includes:
[0035] A limiting ring, wherein the limiting ring is coaxially connected to the outer wall of the limiting portion; and
[0036] The second spring is sleeved outside the limiting part, and its two ends abut against the limiting ring and the crossbeam, respectively.
[0037] Compared with the prior art, the present invention has the following beneficial effects:
[0038] In this invention, the limiting component is located outside the hook body. As needed, the limiting component slides to the opening of the hook body to limit its movement, thus preventing detachment. This avoids the limiting component occupying internal space within the hook body, allowing the hook body to hook larger objects. Even if the internal space of the hook body is filled after hooking an object, the limiting component can still effectively limit the movement, preventing the hooked object from detaching from the hook body. Attached Figure Description
[0039] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0040] Figure 1 This is a perspective view of a crane hook according to one embodiment of the present utility model;
[0041] Figure 2 for Figure 1 Enlarged view of the structure below the central crossbeam;
[0042] Figure 3 for Figure 2Enlarged view of the hook body and limiting assembly;
[0043] Figure 4 for Figure 3 Another 3D image;
[0044] Figure 5 for Figure 3 Another 3D view (without connecting plates and limiting blocks);
[0045] Figure 6 for Figure 5 Another 3D image.
[0046] Figure label:
[0047] 10. Mounting base;
[0048] 20. Crossbeam; 21. Mounting hole;
[0049] 30. Hook body; 31. Columnar sliding part; 32. Limiting part; 33. Hook part;
[0050] 40. Limiting component; 41. U-shaped slider; 411. Protrusion; 42. Connecting plate; 43. Limiting block; 44. Pull plate; 45. Second ratchet block; 46. First spring;
[0051] 50. Mounting block; 51. Slide groove; 52. First ratchet block; 53. Rattle groove; 54. Mating window;
[0052] 60. First rack; 61. Drive slider; 62. Second rack; 63. Gear; 64. Moving block; 65. Limiting ring; 66. Second spring. Detailed Implementation
[0053] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.
[0054] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.
[0055] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0056] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.
[0057] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0058] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0059] See Figures 1 to 6 This embodiment provides a crane hook, including a mounting base 10, a crossbeam 20, a hook body 30, and a limiting component 40.
[0060] Mounting base 10 is connected to the crane body via a wire rope. Crossbeam 20 is connected to the lower end of mounting base 10. The upper end of hook body 30 is connected to crossbeam 20. Limiting component 40 is vertically slidable on crossbeam 20. Limiting component 40 can slide vertically to the opening of hook body 30 for limiting, and can remain stationary on crossbeam 20.
[0061] In this embodiment, by placing the limiting component 40 outside the hook body 30, the limiting component 40 can be slid to the opening of the hook body 30 as needed to limit its movement, thus achieving the effect of preventing disengagement. This avoids the limiting component 40 occupying the internal space of the hook body 30, allowing the hook body 30 to hook larger objects. Even if the internal space of the hook body 30 is filled after hooking an object, the limiting component 40 can still effectively limit the movement, preventing the hooked object from disengaging from the hook body 30.
[0062] Second embodiment:
[0063] In this embodiment, the crane hook further includes a mounting block 50, the upper end of which is connected to the lower end of the crossbeam 20. The mounting block 50 is located on the upper side of the hook body 30. Vertical grooves 51 are formed on the two opposite outer sides of the mounting block 50.
[0064] The limiting component 40 includes a U-shaped slider 41, a connecting plate 42, and a limiting block 43.
[0065] The inner sides of the two arms of the U-shaped slider 41 are provided with protrusions 411, and the protrusions 411 slide vertically with the corresponding sliding grooves 51. Two connecting plates 42 are provided, located on both sides of the mounting block 50, and the upper ends of the connecting plates 42 are connected to the U-shaped slider 41. The two connecting plates 42 are connected to the two arms of the U-shaped slider 41. The limiting block 43 is connected to the end of the two connecting plates 42 away from the mounting block 50, and the lower end of the limiting block 43 is opposite to the opening of the hook body 30.
[0066] In this embodiment, the U-shaped slider 41 slides vertically along the mounting block 50, thereby driving the limiting block 43 to move closer to or away from the opening of the hook body 30 through the connecting plate 42, thereby sealing the opening of the hook body 30 and preventing ropes and other items from coming off the hook body 30.
[0067] Third embodiment:
[0068] In this embodiment, a plurality of first ratchet blocks 52 distributed vertically are provided on the side of the mounting block 50 away from the upper end of the hook body 30; a ratchet groove 53 is formed between two adjacent first ratchet blocks 52; a mating window 54 is provided on the U-shaped slider 41 corresponding to the first ratchet block 52.
[0069] The limiting assembly 40 also includes a pull plate 44, a second ratchet block 45, and a first spring 46.
[0070] The upper end of the pull plate 44 is hinged to the U-shaped slider 41 away from the mounting block 50.
[0071] One end of the second ratchet block 45 is connected to the side of the pull plate 44 facing the U-shaped slider 41, and the other end of the second ratchet block 45 can pass through the mating window 54 and be inserted into the corresponding ratchet groove 53. When the second ratchet block 45 is inserted into the ratchet groove 53, it cannot move upward due to the limitation of the ratchet groove 53. The pull plate 44 remains vertical under the action of gravity, and at this time, the second ratchet block 45 passes through the mating window 54 and is inserted into the corresponding ratchet groove 53. The two ends of the first spring 46 are connected to the upper end of the U-shaped slider 41 and the lower end of the crossbeam 20, respectively. Two first springs 46 can be provided, and the lower ends of the two first springs 46 are connected to the upper side of the two arms of the U-shaped slider 41. In addition, a hole can be made in the crossbeam 20, and the upper end of the first spring 46 enters the hole and is fixedly connected, so that the first spring 46 can retract into the hole when it contracts, saving space.
[0072] In this embodiment, the U-shaped slider 41 can be moved downwards to drive the limiting block 43 to block the opening of the hook body 30. At this time, the first spring 46 is stretched, the pull plate 44 is in a vertical state, and the second ratchet block 45 is inserted into the ratchet groove 53. This allows the limiting block 43 to slide downwards in only one direction, achieving a stable blockage of the opening of the hook body 30. When it is necessary to remove the rope or other hooked object from the opening of the hook body 30, the pull plate 44 is pulled, and the pull plate 44 rotates at a certain angle. The second ratchet block 45 disengages from the ratchet groove 53. At this time, under the action of the first spring 46, the U-shaped slider 41 slides upwards on the mounting block 50, driving the limiting block 43 away from the opening of the hook body 30.
[0073] Fourth embodiment:
[0074] In this embodiment, the crossbeam 20 has vertical mounting holes 21.
[0075] The hook body 30 includes a columnar sliding part 31, a limiting part 32, and a bent hook part 33.
[0076] The columnar sliding part 31 slides vertically into the mounting hole 21. The limiting part 32 is connected to the upper end of the columnar sliding part 31, and the lower end of the limiting part 32 can abut against the upper end of the crossbeam 20. The upper end of the hook part 33 is connected to the lower end of the columnar sliding part 31. The U-shaped slider 41 can move by means of the sliding of the columnar sliding part 31.
[0077] In this embodiment, after the hook portion 33 hooks the weight, the columnar sliding portion 31 moves downward relative to the crossbeam 20, thereby driving the U-shaped slider 41 to slide down, realizing the automatic sealing and limiting of the opening of the hook portion 33 by the limiting block 43. This eliminates the need for manual operation to seal the hook opening, making it more convenient.
[0078] Fifth embodiment:
[0079] In this embodiment, the crane hook further includes: a first rack 60, a drive slider 61, a second rack 62, a gear 63, and a moving block 64.
[0080] The first rack 60 is connected to the side of the mounting block 50 opposite to the first ratchet block 52. The drive slider 61 is vertically slidably connected to the side of the cylindrical sliding part 31 near the mounting block 50. Specifically, the drive slider 61 has a vertical dovetail groove, and the outer wall of the cylindrical sliding part 31 has a vertically extending dovetail block, with the dovetail groove and the dovetail block slidingly engaged. The second rack 62 is connected to the drive slider 61. The gear 63 is rotatably connected to the cylindrical sliding part 31, with the axis of the gear 63 perpendicular to the center line of the cylindrical sliding part 31. The gear 63 is located between the first rack 60 and the second rack 62, and meshes with both the first rack 60 and the second rack 62 simultaneously. The moving block 64 is connected to the U-shaped slider 41, located at the lower end of the drive slider 61, and can abut against the lower end of the drive slider 61. The moving block 64 is connected to the two arms of the U-shaped slider 41 through two L-shaped connectors. The columnar sliding part 31 is subjected to an upward external force.
[0081] In this embodiment, the columnar sliding part 31 is subjected to an upward external force. When the hook part 33 of the hook body 30 hooks a heavy object, it can overcome the external force and drive the columnar sliding part 31 to move downward, thereby driving the gear 63 to move downward. During the downward movement of the gear 63, it rotates and moves downward on the first rack 60, thereby driving the second rack 62 together with the drive slider 61 to move downward faster. The drive slider 61 moves downward and pushes the moving block 64 and the U-shaped slider 41 to move downward, thereby making the limiting block 43 block the opening of the hook part 33. Even if, during the process, a heavy object is hooked and touches the ground, the object no longer exerts a downward pulling force on the hook part 33. The columnar sliding part 31 is moved upward by an external force, driving the slider 61 to move upward. Due to the cooperation between the second ratchet block 45 and the ratchet groove 53, the moving block 64 and the U-shaped slider 41 can still maintain their original positions, achieving a stable anti-disengagement effect. This continues until the operator pulls the pull plate 44 to separate the second ratchet block 45 from the ratchet groove 53, and the U-shaped slider 41 returns to its original position. Only then will the limiting block 43 release the blockage on the opening of the hook part 33.
[0082] Sixth embodiment:
[0083] In this embodiment, the crane hook further includes a limiting ring 65 and a second spring 66.
[0084] The limiting ring 65 is coaxially connected to the outer wall of the limiting part 32. The second spring 66 is sleeved on the outside of the limiting part 32, and its two ends abut against the limiting ring 65 and the crossbeam 20, respectively. The second spring 66 provides an upward external force to the columnar sliding part 31.
[0085] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.
[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. A crane hook, characterized in that, include: Mounting base (10), which is connected to the crane body by a wire rope; A crossbeam (20) is connected to the lower end of the mounting base (10); The hook body (30), the upper end of which is connected to the crossbeam (20); and The limiting component (40) is vertically slidably disposed on the crossbeam (20). The limiting component (40) can slide vertically to the opening of the hook body (30) for limiting. The limiting component (40) can remain stationary on the crossbeam (20).
2. A crane hook as described in claim 1, characterized in that, It also includes a mounting block (50); the upper end of the mounting block (50) is connected to the lower end of the crossbeam (20); the mounting block (50) is located on the upper side of the hook body (30); and vertical grooves (51) are provided on the two opposite outer sides of the mounting block (50). The limiting component (40) includes: U-shaped slider (41), the inner sides of the two arms of the U-shaped slider (41) are provided with protrusions (411), and the protrusions (411) and the corresponding sliding grooves (51) slide in a vertical manner; Connecting plate (42), two connecting plates (42) are provided, the two connecting plates (42) are respectively located on both sides of the mounting block (50), and the upper end of the connecting plate (42) is connected to the U-shaped slider (41); and The limiting block (43) is connected to one end of the two connecting plates (42) away from the mounting block (50), and the lower end of the limiting block (43) is opposite to the opening of the hook body (30).
3. A crane hook as described in claim 2, characterized in that, The mounting block (50) has a plurality of vertically distributed first ratchet blocks (52) on the side opposite to the upper end of the hook body (30); a ratchet groove (53) is formed between two adjacent first ratchet blocks (52). The U-shaped slider (41) has a mating window (54) at the position corresponding to the first ratchet block (52); The limiting component (40) further includes: Pull plate (44), the upper end of which is hinged to the U-shaped slider (41) away from the mounting block (50); The second ratchet block (45) has one end connected to the side of the pull plate (44) facing the U-shaped slider (41), and the other end of the second ratchet block (45) can be inserted into the corresponding ratchet groove (53) through the mating window (54); and The first spring (46) has its two ends connected to the upper end of the U-shaped slider (41) and the lower end of the crossbeam (20), respectively.
4. A crane hook as described in claim 3, characterized in that, The crossbeam (20) has vertical mounting holes (21). The hook body (30) includes: A columnar sliding part (31) is provided, which slides vertically with the mounting hole (21); A limiting part (32) is connected to the upper end of the columnar sliding part (31), and the lower end of the limiting part (32) can abut against the upper end of the crossbeam (20); and The upper end of the hook portion (33) is connected to the lower end of the columnar sliding portion (31); The U-shaped slider (41) can be moved by means of the sliding of the columnar sliding part (31).
5. A crane hook as described in claim 4, characterized in that, Also includes: The first rack (60) is connected to the side of the mounting block (50) opposite to the first ratchet block (52); Drive slider (61), the drive slider (61) is vertically slidably connected to the columnar sliding part (31) near the mounting block (50); The second rack (62) is connected to the drive slider (61); Gear (63), the gear (63) is rotatably connected to the columnar sliding part (31), the axis of the gear (63) is perpendicular to the center line of the columnar sliding part (31), the gear (63) is located between the first rack (60) and the second rack (62), and the gear (63) meshes with both the first rack (60) and the second rack (62); as well as A movable block (64) is connected to the U-shaped slider (41). The movable block (64) is located at the lower end of the driving slider (61), and the movable block (64) can abut against the lower end of the driving slider (61). The columnar sliding part (31) is subjected to an upward external force.
6. A crane hook as described in claim 5, characterized in that, Also includes: A limiting ring (65) is coaxially connected to the outer wall of the limiting part (32); as well as The second spring (66) is sleeved outside the limiting part (32), and the two ends of the second spring (66) abut against the limiting ring (65) and the crossbeam (20) respectively.