Anti-dislocation fixing buckle for crane lifting hook

Abstract

The utility model discloses an anti-dislocation fixing buckle for a lifting hook of a crane, which relates to the technical field of safety of lifting equipment and comprises a mounting base, sliding locking blocks, a trigger connecting rod and a linkage rod, the mounting base is fixed at the top of the lifting hook through bolts and is provided with a guide chute, the sliding locking blocks are symmetrically distributed on two sides of a hook body, and the front ends of the sliding locking blocks are provided with arc-shaped limiting surfaces; the triggering connecting rod is hinged to the base and connected with the balancing weight, and the linkage rod drives the locking block to move along the sliding groove. The balancing weight pulls down to trigger the connecting rod to push the locking block to move forwards to be clamped into the hook tip gap for locking in the no-load state, the hook body deforms to trigger the locking block to retreat and release in the load state, and self-adaptive switching is achieved. The long round hole of the base and the quick locking bolt are matched with different lifting hook sizes, the reset synchronization precision of the locking block is ensured through the double torsional springs and the sliding rail structure, and state monitoring is achieved through the integrated pressure sensor and the wireless module. The device overcomes the defects of manual dependence, response lag and poor adaptability of a traditional scheme, and the safety and efficiency of lifting hook operation are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hoisting equipment safety technical field more specifically relates to a kind of anti-misplacement fixing buckle for crane hook. BACKGROUND

[0002] In hoisting operation, the hook of crane as core force component, its stability directly affects operation safety, but the hook in prior art is easy to swing when moving in empty load or under external force interference, resulting in the dislocation between hook tip and hook body, causing unhooking risk, equipment collision and other problems.The traditional solution relies on manual use of rope binding or manual fixing lock pin, and the operation is complicated and there is human error risk. SUMMARY

[0003] Therefore, the utility model provides a kind of anti-misplacement fixing buckle for crane hook.

[0004] To achieve the above object, the utility model provides the following technical scheme, comprising: installation base is fixed to the top of hook body by bolt, the installation base both sides are equipped with the guide sliding slot of penetration;Two symmetrical sliding lock blocks are located at the both sides of hook body respectively, the rear end of sliding lock block is elastically connected with the side wall of installation base by spring, the front end is equipped with the arc-shaped limit surface matched with the shape of hook tip, trigger connecting rod, the middle part is rotatably connected with the bottom of installation base by hinged shaft, the lower end is fixed with counterweight, and the upper end is movably connected with the rear end of two sliding lock blocks by linkage rod;The both ends of linkage rod are equipped with sliding block, the sliding block is embedded in the slide rail of sliding lock block, and linkage driving structure is formed.

[0005] Preferably, in the above anti-misplacement fixing buckle for crane hook, the bolt fixing hole of installation base is horizontal long circular hole, and is provided with quick locking bolt with handle, for adapting to hook body of different sizes.

[0006] Preferably, in the above anti-misplacement fixing buckle for crane hook, the spring is double torsional spring structure, one end is fixed in spring seat on the inner side of installation base, and the other end is connected with the hook of rear end of sliding lock block.

[0007] Preferably, in the above anti-misplacement fixing buckle for crane hook, the counterweight of trigger connecting rod is detachable structure, and the weight is adjusted by thread adjustment knob to realize the increase and decrease of ± %.

[0008] Preferably, in the above anti-misplacement fixing buckle for crane hook, the arc-shaped limit surface of sliding lock block is provided with wear-resistant rubber layer, and the inner side of rubber layer is embedded with pressure sensor, and the pressure sensor is connected to cab alarm through wire.

[0009] Preferably, in the anti-misplacement fixing buckle for the crane hook, a wireless transmission module is integrated inside the mounting base to transmit data of the pressure sensor to a remote monitoring terminal.

[0010] Preferably, in the anti-misplacement fixing buckle for the crane hook, a buffer gasket is arranged at the connection between the linkage rod and the trigger link, and the buffer gasket is made of polyurethane and has a thickness of mm.

[0011] Preferably, in the anti-misplacement fixing buckle for the crane hook, a self-lubricating coating is arranged on the inner wall of the guide sliding groove, and the coating material is graphene composite nylon.

[0012] Compared with the prior art, the anti-misplacement fixing buckle for the crane hook has the following advantages: the modular design of the mounting base and the guide sliding groove enables quick installation and transverse adjustment of the hook; the mechanical linkage structure of the trigger link, the linkage rod and the sliding lock block is combined to utilize the dynamic balance between the gravity of the counterweight block and the spring force to automatically lock the hook when it is empty and release the hook when it is loaded, thereby eliminating the need for manual intervention and ensuring the state switching response time; the symmetrical arrangement of the double torsion springs and the dovetail groove sliding rail improves the reset synchronization accuracy of the sliding lock block and avoids unilateral jamming; the long circular hole and the quick locking bolt structure support tool-free adjustment of the hook width in the range of 0-0 mm, thereby improving the adaptability; the integration of the split counterweight block and the pressure sensor further expands the locking force adjustment and abnormal state monitoring functions, and realizes the unity of structural stability and functional expansibility. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0014] Fig. 1 The accompanying drawings are schematic diagrams of the main structure of the present application.

[0015] Fig. 2 The accompanying drawings are schematic diagrams of the front structure of the present application.

[0016] Fig. 3 The accompanying drawings are schematic diagrams of the side structure of the present application. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0018] Please refer to the accompanying Figs. 1-3 The utility model discloses a kind of anti-misplacement fixing buckles for crane hook.

[0019] Embodiment 1: the present embodiment provides a kind of hook anti-misplacement fixing buckle, including installation base 1, sliding lock block 2, trigger connecting rod 3 and linkage 4.Installation base 1 is fixed by bolt on the top of hook body 8, its two sides are provided with the guide sliding groove 7 of width 8mm, sliding lock block 2 is symmetrically distributed in hook body two sides, rear end is elastically connected with base by spring 5, front end is equipped with the arc limit surface 10 consistent with the curvature of hook tip 9, trigger connecting rod 3 middle part is rotatably connected with base by hinged shaft 11, lower end is welded 5kg counterweight 6, upper end is connected with the dovetail groove slide rail linkage of lock block back by the T-shaped slider 12 of linkage 4.When empty load, counterweight 6 pulls down trigger connecting rod 3, linkage 4 promotes lock block 2 and moves forward mm and is locked into the gap between hook tip;When load, hook body is deformed and trigger connecting rod 3 is retracted, spring 5 pulls lock block 2 and moves back to unlock, switching time ≤0.3 seconds, solve the problem of traditional scheme and rely on manual intervention and response lag.

[0020] Embodiment 2: on the basis of embodiment 1, the installation adaptability and elastic structure of embodiment 1 are optimized.The bolt hole of installation base 1 is replaced by horizontal long round hole with length of 30mm, butterfly handle quick locking bolt is configured, transverse adjustment of 0-0mm is supported for the width of hook body;Spring 5 is replaced by double torsional spring structure, wire diameter is Φ5mm, two ends are fixed in the spring seat of base inner side and lock block rear end hook respectively, the synchronous error of double torsional spring symmetrical layout makes lock block 2 reset ≤0.5mm.The installation adjustment time of this embodiment is shortened by 80%, and the compatibility covers 90% of the market hook models, the double torsional spring structure avoids the risk of unilateral failure, and the stability is improved.

[0021] Embodiment 3: on the basis of embodiment 2, intelligent monitoring function is added.Counterweight 6 is designed as split type, and the weight is adjusted steplessly by 4-6kg through screw knob;The arc limit surface 10 of lock block 2 is pasted with 3mm wear-resistant rubber layer on the surface, and a MEMS pressure sensor with a range of 5kN is embedded in the inner side, the sensor signal is transmitted to the cab alarm through the wire, and the audible and light alarm is triggered when the overpressure is 3kN;The base 1 is integrated with NB-IoT wireless transmission module, and pressure and position data are sent to remote monitoring terminal every 10 seconds.The present embodiment realizes real-time monitoring of the state of the hook, and the abnormal response time is ≤0.5 seconds, which is suitable for high-frequency and high-risk scenes such as port crane.

[0022] In the embodiment 4, the impact resistance and wear resistance are strengthened on the basis of the embodiment 3. A 4mm-thick polyurethane buffer gasket with a Shore hardness of 80A is additionally arranged at the connection between the linkage rod 4 and the trigger link 3, which can absorb 30% of instantaneous impact force. The inner wall of the guide chute 7 is sprayed with a 0.2mm graphene composite nylon self-lubricating coating with a friction coefficient of less than or equal to 0.1. The wear amount of the lock block after 10000 times of sliding test is only % of that of the conventional structure. The embodiment can continuously run for 500 hours without failure in a dusty and high-humidity environment, and the service life is extended to more than 5 years, solving the defects of poor wear resistance and easy jamming of the prior art.

[0023] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the device disclosed by the embodiments, since it corresponds to the method disclosed by the embodiments, the description is relatively simple, and the related parts can be referred to the method part.

[0024] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A misalignment prevention fixing buckle for crane hooks, characterized in that, include: The mounting base (1) is fixed to the top of the hook body (8) by bolts. The mounting base (1) has through guide grooves (7) on both sides. Two symmetrically arranged sliding locking blocks (2) are located on both sides of the hook body (8). The rear end of the sliding locking block (2) is elastically connected to the side wall of the mounting base (1) by spring (5). The front end is provided with an arc-shaped limiting surface (10) that matches the shape of the hook tip (9). The triggering link (3) is rotatably connected to the bottom of the mounting base (1) by hinge shaft (11). The lower end is fixed with a counterweight block (6). The upper end is movably connected to the rear end of the two sliding locking blocks (2) by linkage rod (4). The linkage rod (4) is provided with sliders (12) at both ends. The sliders (12) are embedded in the slide rails () of the sliding locking blocks (2) to form a linkage drive structure.

2. The anti-misalignment fixing buckle for crane hooks according to claim 1, characterized in that, The mounting base (1) has a horizontal elongated hole for fixing bolts and is equipped with a quick-locking bolt with a handle to accommodate hook bodies (8) of different sizes.

3. The anti-misalignment fixing buckle for crane hooks according to claim 1, characterized in that, The spring (5) is a double torsion spring structure, with one end fixed to the spring seat inside the mounting base (1) and the other end connected to the hook at the rear end of the sliding lock block (2).

4. The anti-misalignment fixing buckle for crane hooks according to claim 1, characterized in that, The counterweight (6) of the trigger link (3) is a detachable structure, and its weight can be adjusted by ±% through a threaded adjustment knob.

5. The anti-misalignment fixing buckle according to claim 1, characterized in that, The arc-shaped limiting surface (10) of the sliding lock block (2) is provided with a wear-resistant rubber layer, and a pressure sensor is embedded in the inner side of the rubber layer. The pressure sensor is connected to the cab alarm through a wire.

6. The anti-misalignment fixing buckle for crane hooks according to claim 5, characterized in that, The mounting base (1) has an integrated wireless transmission module for transmitting pressure sensor data to a remote monitoring terminal.

7. The anti-misalignment fixing buckle for crane hooks according to claim 1, characterized in that, A buffer pad is provided at the connection between the linkage rod (4) and the trigger linkage (3). The buffer pad is made of polyurethane and has a thickness of 3-5mm.

8. The anti-misalignment fixing buckle for crane hooks according to claim 1, characterized in that, The inner wall of the guide groove (7) is provided with a self-lubricating coating, and the coating material is graphene composite nylon.

Images