Adjustable bridge crane lifting hook

Abstract

The utility model relates to the technical field of crane lifting appliances, and particularly discloses an adjustable bridge crane lifting hook which comprises a connecting piece connected with a lifting steel wire rope and a hook connected to the bottom of the connecting piece, the inner cambered surface of an arc-shaped block is in sliding fit with the outer cambered surface of the hook, and a through hole is formed in the middle of the arc-shaped block; the anti-disengaging rod comprises a rod piece movably connected with the penetrating hole in a sleeved mode, a threaded column fixedly connected to one end of the rod piece in a butt joint mode and a rotating wheel fixed to the other end of the rod piece. An inner cambered surface sliding groove is formed in the position, located on the lower side of the opening, of the inner cambered surface of the hook, a ball is movably clamped in the inner cambered surface sliding groove, a threaded hole matched with the threaded column in a threaded sleeving mode is formed in the middle of the ball, a side sliding groove opposite to the inner cambered surface sliding groove is formed in the other side of the hook, and the rod piece is slidably clamped with the side sliding groove. The problem that the anti-falling effect of the lifting hook of the bridge crane is poor is well solved.

Description

Technical Field

[0001] This utility model relates to the field of crane lifting equipment technology, specifically an adjustable bridge crane hook. Background Technology

[0002] Bridge cranes are lifting equipment that spans across workshops, warehouses, and material yards for material handling. Because their ends rest on tall concrete pillars or metal supports, they resemble bridges. The bridge frame of a bridge crane runs longitudinally along rails laid on elevated structures on both sides, making full use of the space beneath the bridge frame for material handling without being obstructed by ground equipment. It is the most widely used and numerous type of lifting machinery.

[0003] Currently, bridge cranes use lifting wire ropes for suspension in their hooks, and elastic baffles are installed inside the hooks to prevent disengagement. When the hook hooks onto the lifting rings or binding wire ropes of a heavy object, the lifting rings or wire ropes are prone to displacement within the hook, which can easily break open the safety latch, thus posing a risk of the heavy object falling. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable hook for bridge cranes to solve the problem of poor anti-derailment effect of hooks in current bridge cranes.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable bridge crane hook, comprising a connector for connecting to a lifting wire rope and a hook connected to the bottom of the connector, wherein the inner arc surface of the arc block slidably fits against the outer arc surface of the hook, and a through hole is provided in the middle of the arc block; the anti-detachment rod comprises a rod movably sleeved with the through hole, a threaded post fixedly connected to one end of the rod, and a wheel fixedly connected to the other end of the rod; the inner arc surface of the hook is provided with an inner arc surface groove at the lower side of the opening, a ball is movably engaged in the inner arc surface groove, the middle of the ball is provided with a threaded hole that matches the threaded post, and the other side of the hook is provided with a side groove opposite to the inner arc surface groove, and the rod is slidably engaged with the side groove.

[0006] Preferably, the connector includes a housing, grooved wheels rotatably mounted on both sides of the middle of the housing cavity, and shafts with their front and rear ends respectively fitted onto the front and rear walls of the bottom middle of the housing, with the top of the hook fitted onto the shaft.

[0007] Preferably, the hook includes an arc-shaped component, a ring fitted onto the shaft, and a rotating column vertically connected between the top of the arc-shaped component and the bottom of the ring. The inner arc surface groove is located on the lower side of the opening of the inner arc surface of the arc-shaped component, and the side groove is located on the other side of the arc-shaped component and opposite to the inner arc surface groove.

[0008] Preferably, the outer arc surface of the arc-shaped component is provided with toothed protrusions at the positions of the front and rear sides of the side slide groove, and the inner arc surface of the arc-shaped block is provided with toothed protrusions that engage and match the toothed protrusions.

[0009] Preferably, the bottom end of the rotating column is fixedly connected to the top end of the arc-shaped component, and the top end of the rotating column is rotatably sleeved with the bottom of the ring body.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This utility model relates to an adjustable hook for a bridge crane, which not only facilitates the hooking and unhooking of heavy objects, but also enables reliable locking to enhance the anti-detachment performance of the hook. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0013] Figure 2 This is a three-dimensional structural diagram of the connector of this utility model;

[0014] Figure 3 This is a three-dimensional structural diagram of the hook of this utility model;

[0015] Figure 4 This is a three-dimensional structural diagram of the arc-shaped block of this utility model;

[0016] Figure 5 This is a three-dimensional structural diagram of the anti-detachment rod of this utility model.

[0017] In the diagram: 1-Connector; 1.1-Housing; 1.2-Groove; 1.3-Shaft;

[0018] 2-Hook; 2.1-Arc-shaped component; 2.1.1-Inner arc surface groove; 2.1.2-Side groove; 2.1.3-Toothed protrusion; 2.2-Ring body; 2.3-Rotating column; 2.4-Sphere; 2.4.1-Threaded hole;

[0019] 3-Arc-shaped block; 3.1-Perforation; 3.2-Two toothed protrusions;

[0020] 4-Anti-detachment rod; 4.1-Rod; 4.2-Threaded post; 4.3-Roller. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 This utility model provides a technical solution: an adjustable bridge crane hook, including a connector 1 connected to the lifting wire rope and a hook 2 connected to the bottom of the connector 1.

[0023] The connecting component 1 includes a housing 1.1, grooved wheels 1.2 rotatably mounted on both sides of the middle of the inner cavity of the housing 1.1, and shafts 1.3 respectively fitted onto the front and rear walls of the bottom middle of the housing 1.1. The lifting wire rope of the bridge crane trolley passes around the grooved wheels 1.2 to assemble and connect the hook as a whole.

[0024] The hook 2 includes an arc-shaped component 2.1, a ring 2.2 fitted onto the shaft 1.3, and a rotating post 2.3 vertically connecting the top of the arc-shaped component 2.1 and the bottom of the ring 2.2. The arc-shaped component 2.1 has an inner arc surface groove 2.1.1 located below the opening on its inner arc surface. A ball 2.4 is movably engaged within the inner arc surface groove 2.1.1. The ball 2.4 has a threaded hole 2.4.1 in its center. The other side of the arc-shaped component 2.1 has a side groove 2.1.2 opposite to the inner arc surface groove 2.1.1.

[0025] The inner arc surface of the arc block 3 slides and fits against the outer arc surface of the arc part 2.1, and a through hole 3.1 is provided in the middle of the arc block 3.

[0026] The anti-detachment rod 4 includes a rod 4.1 that is movably sleeved with the through hole 3.1, a threaded post 4.2 fixedly abutted to one end of the rod 4.1, and a rotating wheel 4.3 fixed to the other end of the rod 4.1. The rod 4.1 is slidably engaged with the side sliding groove 2.1.2, and the threaded post 4.2 is threadedly sleeved with the threaded hole 2.4.1.

[0027] In summary, when using a bridge crane to lift heavy objects, the bridge frame and the trolley work together to move and lower the hook to the object. First, the threaded post 4.2 is unscrewed from the threaded hole 2.4.1. Then, the open hook of the arc-shaped part 2.1 is hooked onto the lifting ring of the object. Next, the rod 4.1 is passed through the through hole 3.1, and the threaded post 4.2 is screwed into the threaded hole 2.4.1 through the wheel 4.3. Then, the sliding of the rod 4.1 in the side slide groove 2.1.2 is adjusted, as is the sliding of the ball 2.4 in the inner arc surface slide groove 2.1.1 and the rotation of the ball 2.4 relative to the inner arc surface slide groove 2.1.1, so that the rod 4.1 is pressed tightly against the top surface of the lifting ring of the object. Subsequently, the anti-detachment rod 4 is further tightened, so that the rotating wheel 4.3 is pressed against the outer arc surface of the arc block 3, and the inner arc surface of the arc block 3 is pressed against the outer arc surface of the arc part 2.1, so that the overall position of the anti-detachment rod 4 is fixed, thereby completing the operation of hooking the hook.

[0028] To perform the unhooking operation, simply rotate the wheel 4.3 in the opposite direction to disengage the threaded post 4.2 from the threaded hole 2.4.1, and pull out the entire anti-disengagement rod 4.

[0029] To improve the anti-slip performance between the arc-shaped block 3 and the arc-shaped component 2.1, toothed protrusions 2.1.3 are provided on the outer arc surface of the arc-shaped component 2.1 at the front and rear sides of the side sliding groove 2.1.2, and toothed protrusions 3.2 are provided on the inner arc surface of the arc-shaped block 3 to engage with toothed protrusions 2.1.3. That is, after the anti-slip rod 4 is tightened, the roller 4.3 presses against the outer arc surface of the arc-shaped block 3, and toothed protrusions 3.2 on the inner arc surface of the arc-shaped block 3 engage with toothed protrusions 2.1.3, thereby preventing the arc-shaped block 3 from slipping relative to the arc-shaped component 2.1.

[0030] To further facilitate the hook and pin operation, the bottom end of the rotating column 2.3 is fixedly connected to the top end of the arc-shaped part 2.1, and the top end of the rotating column 2.3 is rotatably sleeved with the bottom of the ring body 2.2.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable bridge crane hook, comprising a connector (1) connected to a lifting wire rope and a hook (2) connected to the bottom of the connector (1), characterized in that, Also includes: An arc-shaped block (3) has its inner arc surface slidingly attached to the outer arc surface of the hook (2), and a through hole (3.1) is provided in the middle of the arc-shaped block (3). Anti-detachment rod (4), the anti-detachment rod (4) includes a rod (4.1) movably sleeved with the through hole (3.1), a threaded post (4.2) fixedly connected to one end of the rod (4.1), and a rotating wheel (4.3) fixed to the other end of the rod (4.1); The hook (2) has an inner arc surface groove located on the lower side of the opening. 2.1.1) A ball (2.4) is movably engaged in the inner arc surface groove (2.1.1). The ball (2.4) has a threaded hole (2.4.1) in the middle that matches the threaded sleeve of the threaded column (4.2). The hook (2) has a side groove (2.1.2) on the other side that is opposite to the inner arc surface groove (2.1.1). The rod (4.1) is slidably engaged with the side groove (2.1.2).

2. The adjustable bridge crane hook according to claim 1, characterized in that: The connector (1) includes a housing (1.1), grooved wheels (1.2) rotatably mounted on both sides of the middle part of the inner cavity of the housing (1.1), and shafts (1.3) with their front and rear ends respectively fitted onto the front and rear walls of the bottom middle part of the housing (1.1). The top of the hook (2) is fitted onto the shaft (1.3).

3. An adjustable bridge crane hook according to claim 2, characterized in that: The hook (2) includes an arc-shaped component (2.1), a ring (2.2) fitted onto the shaft (1.3), and a rotating post (2.3) vertically connected between the top of the arc-shaped component (2.1) and the bottom of the ring (2.2). The inner arc surface groove (2.1.1) is located on the lower side of the opening of the inner arc surface of the arc-shaped component (2.1), and the side groove (2.1.2) is located on the other side of the arc-shaped component (2.1) and opposite to the inner arc surface groove (2.1.1).

4. An adjustable bridge crane hook according to claim 3, characterized in that: The outer arc surface of the arc-shaped component (2.1) is provided with toothed protrusion one (2.1.3) at the front and rear sides of the side slide groove (2.1.2), and the inner arc surface of the arc-shaped block (3) is provided with toothed protrusion two (3.2) that engages and matches the toothed protrusion one (2.1.3).

5. An adjustable bridge crane hook according to claim 3, characterized in that: The bottom end of the rotating column (2.3) is fixedly connected to the top end of the arc-shaped component (2.1), and the top end of the rotating column (2.3) is rotatably sleeved with the bottom end of the ring (2.2).

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