Lifting hook anti-falling device convenient to install

Abstract

The utility model relates to the field of hook anti-dropping, and discloses a hook anti-dropping device convenient to install, which comprises a hoop, a pin shaft, a driving lever and a stop lever, the hoop comprises an arc-shaped base plate and arc-shaped hoop plates, the same ends of the top and the bottom of the arc-shaped base plate are hinged with the arc-shaped hoop plates, and the arc-shaped hoop plates are connected with the other end of the arc-shaped base plate through bolts; the two pin shafts are symmetrically arranged at the two ends of the arc-shaped base plate and located between the two arc-shaped hoop plates. The two driving levers are rotationally mounted on the pin shaft and are positioned on the hook back of the lifting hook; the stop lever is U-shaped and is arranged in a hook opening of the lifting hook, and the two ends of the stop lever are fixedly connected with the two driving levers respectively. The gravity type lever formed by the deflector rods and the baffle is rotationally installed on the pin shafts at the two ends of the arc-shaped base plate of the hoop, the two deflector rods are of a non-connection structure, a lifting hook can enter the anti-disengaging device from the position between the two deflector rods in the installation process, the hook can be tightly hooped through the arc-shaped hoop plates at the top and the bottom of the arc-shaped base plate, installation is convenient and fast, and installation efficiency is improved. The device is suitable for installing old-fashioned lifting hooks.

Description

Technical Field

[0001] This utility model relates to the field of hook anti-detachment, and in particular to an easy-to-install hook anti-detachment device. Background Technology

[0002] Hooks are one of the most common lifting tools in hoisting machinery. During the operation of these machines, in order to prevent the suspended load from falling, anti-derailment devices are usually installed on the hooks. Currently, anti-derailment devices mainly consist of spring-loaded anti-derailment devices and lever-gravity anti-derailment devices. The former has problems such as the spring being prone to failure, broken springs, and the edge being easily deformed and failed due to impact. The latter requires the hook itself to have mounting ears or to drill holes in the neck of the hook (old-style hooks) to achieve installation, which has certain limitations.

[0003] Application dated June 15, 2017, application number CN201710451194.0 discloses an anti-derailment device for crane hooks. Before use, two L-shaped anti-derailment levers are positioned on the two pins of two semi-circular clamps. Then, the two semi-circular clamps are fixed to the neck of the hook using a fastening device. Finally, the two L-shaped anti-derailment levers are fixed with two positioning steel pipes and bolts, completing the assembly of the invention. This device is suitable for hooks with damaged original anti-derailment devices and old-style hooks, ensuring the safe and stable operation of the crane. However, this anti-derailment device has the following drawbacks:

[0004] 1. After fixing the two semi-circular clamps to the hook, two positioning steel pipes and bolts are needed to fix the two L-shaped anti-disengagement levers, which is a rather complicated installation.

[0005] 2. The length of the L-shaped anti-derailment lever located inside the hook opening cannot be adjusted. The position of the L-shaped anti-derailment lever in the hook opening can only be controlled by the installation height of the anti-derailment device, which may not meet the needs of hooks of different specifications.

[0006] Based on this, this application provides a hook anti-detachment device with a more reasonable design, convenient installation, and stronger applicability to solve the problems of existing anti-detachment devices. Utility Model Content

[0007] The present invention aims to solve the technical problems existing in the prior art. Therefore, the present invention provides a hook anti-detachment device that is more rationally designed, easier to install, and more applicable.

[0008] The technical solution adopted by this utility model to solve its technical problem is:

[0009] A hook anti-detachment device that is easy to install is provided, comprising a clamp, pins, levers, and a stop bar, wherein: the clamp comprises an arc-shaped base plate and an arc-shaped hoop plate, the top and bottom ends of the arc-shaped base plate are hinged to the same end of the arc-shaped base plate, and the arc-shaped hoop plate is bolted to the other end of the arc-shaped base plate; two pins are symmetrically arranged at both ends of the arc-shaped base plate and located between the two arc-shaped hoop plates; two levers are rotatably mounted on the pins and located on the hook back of the hook; the stop bar is U-shaped and is located inside the hook opening of the hook, and both ends of the stop bar are fixedly connected to the two levers respectively.

[0010] In a preferred embodiment of the present invention, the arc-shaped substrate is located between the two ends of the arc-shaped hoop, and the axis of the arc-shaped substrate extends horizontally outward.

[0011] In a preferred embodiment of this utility model, both the arc-shaped hoop and the arc-shaped base plate are provided with flanges at their other ends, and bolt holes for bolts to pass through are provided on the flanges.

[0012] In a preferred embodiment of this utility model, the tail diameter of the lever is thickened.

[0013] In a preferred embodiment of this utility model, the lever is provided with a sleeve for insertion with the stop lever, and the end of the sleeve is provided with a set screw. After the end of the stop lever is inserted into the sleeve, it is locked by the set screw.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model rotatably mounts a gravity lever formed by a lever and a baffle onto the pins at both ends of the arc-shaped base plate of the clamp. The two levers are not connected. During installation, the hook can enter the anti-detachment device between the two levers and be tightened by the arc-shaped clamps at the top and bottom of the arc-shaped base plate. The installation is convenient and quick and is suitable for the installation of old-style hooks.

[0016] 2. The sleeve on the lever that connects to the U-shaped stop bar allows for adjustment of the length of the U-shaped stop bar, accommodating hooks of different specifications and enhancing its applicability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0018] Figure 1 This is an installation diagram of the easy-to-install hook anti-detachment device provided by this utility model;

[0019] Figure 2 This is a top view of the easy-to-install hook anti-detachment device provided by this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the clamp provided by this utility model.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1—Clamping hoop, 1.1—Arc-shaped base plate, 1.2—Arc-shaped clamp plate, 2—Pin shaft, 3—Tuning rod, 4—Stop rod, 5—Bolt, 6—Sleeve, 7—Set screw. Detailed Implementation

[0023] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0024] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0027] Example 1

[0028] This embodiment provides an easy-to-install hook anti-detachment device, as shown in the attached document. Figure 1 To be continued Figure 3 As shown, it includes a clamp 1, a pin 2, a lever 3, and a stop lever 4, wherein:

[0029] The clamp 1 includes an arc-shaped base plate 1.1 and an arc-shaped clamp plate 1.2. The arc-shaped clamp plate 1.2 is hinged to the same end of the top and bottom of the arc-shaped base plate 1.1. The other end of the arc-shaped clamp plate 1.2 is connected to the other end of the arc-shaped base plate 1.1 by bolts 5. Specifically, the other end of the arc-shaped clamp plate 1.2 and the arc-shaped base plate 1.1 are provided with flanges, and bolt holes for the bolts 5 to pass through are provided on the flanges.

[0030] Two pins 2 are symmetrically positioned at both ends of the arc-shaped base plate 1.1 and located between the two arc-shaped clamps 1.2; preferably, the ends of the arc-shaped base plate 1.1 located between the arc-shaped clamps 1.2 extend horizontally out of the axis of the arc-shaped base plate 1.1. This design allows the pins to be located on both sides of the hook after the anti-detachment device is installed. Preferably, as shown in the attached... Figure 3 As shown, the pin 2 is provided with a shoulder, which can be used to position the end of the lever.

[0031] As attached Figure 1 and attached Figure 2 As shown, the two levers 3 are rotatably mounted on the pin 2 and located on the back of the hook; the stop bar 4 is U-shaped and located inside the hook opening, with both ends of the stop bar 4 fixedly connected to the two levers 3 respectively. The stop bar and the levers form a gravity lever structure. In this embodiment, the gravity lever formed by the levers and the stop bar is rotatably mounted on the pins at both ends of the arc-shaped base plate of the clamp, and the two levers are not connected. During installation, the hook can enter the anti-detachment device between the two levers and be tightened by the arc-shaped clamps at the top and bottom of the arc-shaped base plate. The installation is convenient and quick, and it is suitable for the installation of old-style hooks.

[0032] Preferably, the tail diameter of the lever 3 is thickened, which increases the counterweight at the tail of the lever and helps the stop bar to block the hook opening.

[0033] Further details are attached. Figure 1 As shown, in this embodiment, the lever 3 is provided with a sleeve 6 for insertion into the stop lever 4. The end of the sleeve 6 is provided with a set screw 7. After the end of the stop lever is inserted into the sleeve, it is locked by the set screw. This design allows for adjustment of the length of the stop lever to accommodate hooks of different specifications.

[0034] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A hook anti-detachment device that is easy to install, characterized in that: Includes clamps, pins, levers, and stop levers, among which: The clamp includes an arc-shaped base plate and an arc-shaped clamp plate. The arc-shaped clamp plate is hinged to the same end of the top and bottom of the arc-shaped base plate. The arc-shaped clamp plate is connected to the other end of the arc-shaped base plate by bolts. The two pins are symmetrically located at both ends of the arc-shaped base plate and between the two arc-shaped clamps, so that the pins are located on both sides of the hook. The two levers are rotatably mounted on the pin and located on the back of the hook; The stop bar is U-shaped and is located inside the hook opening of the hook, and both ends of the stop bar are fixedly connected to the two levers respectively; The lever is provided with a sleeve for insertion into the stop lever. The end of the sleeve is provided with a set screw. After the end of the stop lever is inserted into the sleeve, it is locked by the set screw.

2. The easy-to-install hook anti-detachment device according to claim 1, characterized in that: The arc-shaped substrate is located between the arc-shaped hoops, with its two ends extending horizontally out of the axis of the arc-shaped substrate.

3. The easy-to-install hook anti-detachment device according to claim 1, characterized in that: Both the arc-shaped hoop and the arc-shaped base plate have flanges at their other ends, and bolt holes for bolts to pass through are provided on the flanges.

4. The easy-to-install hook anti-detachment device according to claim 1, characterized in that: The tail diameter of the lever is thickened.

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