Automatic opening and closing device for crane hook safety latch

Abstract

The utility model discloses a crane hook safety catch automatic opening and closing device, including the hook body, both sides of hook body top are all fixedly connected with the support, the support inside bearing is connected with electric push rod, the inboard of hook body is close to the bearing connection of top department custom insurance card, the one side top fixed connection of hook body is away from custom insurance card and is equipped with the equipment box, the battery group is seted up in the equipment box inside. The utility model discloses through the mutual cooperation between hook body, custom insurance card, equipment box and wireless signal receiving module, realizes wireless remote control, makes the device can conveniently be applied to various working condition scene, need not operating personnel to climb to the hook position and carry out manual opening and closing operation, has guaranteed the personal safety, has simplified the system structure, has got rid of the external power source dependence, has cancelled the complex external pipeline, has improved the device reliability and applicability, has realized the quick, remote opening and closing of insurance card, has shortened the hoisting operation cycle.

Description

Technical Field

[0001] This utility model relates to the field of crane accessories technology, specifically to an automatic opening and closing device for a crane hook safety catch. Background Technology

[0002] The safety catch, also known as a latch or safety lock tongue, installed on the crane hook is a key safety device to prevent the load from accidentally detaching during hoisting. In existing technology, this safety catch is generally opened and closed manually.

[0003] Specifically, when it is necessary to hook or retrieve a load, the operator must climb to the location of the hook, usually at a height, and manually pull the safety catch to open it. This operating method has significant drawbacks:

[0004] High risk: Climbing at heights and manual operation pose a significant risk of falling from heights, seriously threatening the personal safety of operators, especially under adverse working conditions such as strong winds, rain, and snow.

[0005] Low efficiency: Each hoisting operation requires personnel to climb and operate manually, which is time-consuming and significantly reduces work efficiency.

[0006] Limitations: In certain locations where space is limited or difficult for personnel to access, such as inside large equipment or narrow compartments, manual operation is extremely difficult or even impossible.

[0007] Existing automation solutions mostly rely on external power sources, such as pneumatic / hydraulic power stations, which require additional pipelines, resulting in complex structures and limited applicability.

[0008] Therefore, we propose to design an automatic opening and closing device for the safety catch of a crane hook. Utility Model Content

[0009] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0010] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0011] An automatic opening and closing device for a crane hook safety card includes a hook body. Supports are fixedly connected to both sides of the top of the hook body. An electric push rod is connected to a bearing inside the support. A custom safety card is connected to a bearing on the inner side of the hook body near the top. An equipment box is fixedly connected to the top of the side of the hook body away from the custom safety card. A battery pack is installed inside the equipment box, and a wireless signal receiving module is fixedly connected to the bottom of the equipment box.

[0012] As a preferred embodiment of the automatic opening and closing device for the crane hook safety card described in this utility model, a connecting arm is fixedly connected through the middle of the customized safety card, and the telescopic end of the electric push rod is hinged to the end of the connecting arm. When the electric push rod extends or retracts, it drives the connecting arm to rotate, thereby driving the customized safety card to rotate, thus realizing opening and closing.

[0013] As a preferred embodiment of the automatic opening and closing device for the crane hook safety card described in this utility model, the connecting arm is made of alloy steel to ensure load-bearing capacity and wear resistance. The hinge point at the end of the connecting arm is reinforced and thickened to withstand the load and impact of repeated movements.

[0014] In a preferred embodiment of the crane hook safety card automatic opening and closing device described in this utility model, the battery pack is a rechargeable lithium battery and is equipped with a power indicator function to facilitate the cyclic use of the battery pack.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention enables wireless remote control through the cooperation of the hook body, customized safety card, equipment box, and wireless signal receiving module. This allows the device to be conveniently applied to various working conditions, eliminating the need for operators to climb to the hook position for manual opening and closing, thus ensuring personal safety. It also simplifies the system structure, eliminates reliance on external power sources, removes complex external pipelines, improves the reliability and applicability of the device, and enables rapid, remote opening and closing of the safety card, shortening the hoisting operation cycle. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. 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. Among them:

[0018] Figure 1 This is a schematic diagram of the customized safety card closure of a crane hook safety card automatic opening and closing device according to this utility model;

[0019] Figure 2 This is a schematic diagram of the customized insurance card opening of an automatic opening and closing device for a crane hook insurance card according to this utility model.

[0020] Legend: 1. Hook body; 2. Bracket; 3. Electric push rod; 4. Customized safety card; 401. Connecting arm; 5. Equipment box; 6. Battery pack; 7. Wireless signal receiving module. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0022] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0023] Please see Figure 1-2 This utility model provides an automatic opening and closing device for a crane hook safety card, including a hook body 1, brackets 2 fixedly connected to both sides of the top of the hook body 1, an electric push rod 3 connected to the bearing inside the bracket 2, and a customized safety card 4 connected to the bearing near the top of the inner side of the hook body 1.

[0024] A connecting arm 401 is fixedly connected through the middle of the customized insurance card 4. The telescopic end of the electric push rod 3 is hinged to the end of the connecting arm 401. When the electric push rod 3 telescopically extends or retracts, it drives the connecting arm 401 to rotate, thereby driving the customized insurance card 4 to rotate, thus realizing opening and closing.

[0025] In this embodiment, the connecting arm 401 is made of alloy steel to ensure load-bearing capacity and wear resistance. The hinge point at the end of the connecting arm 401 is reinforced and thickened to withstand the load and impact of repeated movements.

[0026] The top of the hook body 1, away from the customized insurance card 4, is fixedly connected to an equipment box 5. The equipment box 5 contains a battery pack 6, and the bottom of the equipment box 5 is fixedly connected to a wireless signal receiving module 7.

[0027] In this embodiment, the battery pack 6 is a rechargeable lithium battery and is equipped with a power indicator function to facilitate the cyclic use of the battery pack 6.

[0028] In use, the electric push rod 3 in this device serves as the core actuator. It is fixedly installed at the rear of the hook body 1, i.e., the non-load-bearing side, according to the hook structure's adaptation angle. Its telescopic end is connected to the custom-made safety card 4 via a hinge. The telescopic movement of the electric push rod 3 directly drives the rotation of the custom-made safety card 4, realizing the unlocking and locking actions.

[0029] Battery pack 6 provides power to electric push rod 3 and wireless signal receiving module 7. Battery pack 6, electric push rod 3 and wireless signal receiving module 7 are integrated and packaged in equipment box 5 at the rear of hook body 1 to form an independent power supply unit.

[0030] The wireless signal receiving module 7 receives wireless control signals from the remote control, such as RF, Bluetooth, LoRa, etc. After decoding the signal, the wireless signal receiving module 7 outputs corresponding control commands to drive the electric push rod 3 to perform the extension or retraction action.

[0031] The customized insurance card 4 is an adaptive design based on the traditional insurance card. One end of the customized insurance card 4 cooperates with the slot of the hook body 1 to form a locking structure, while the other end is provided with a connecting arm 401 that is reliably hinged to the telescopic end of the electric push rod 3. It is made of high-strength alloy steel to ensure load-bearing capacity and wear resistance. At the same time, the hinge point is reinforced to withstand the load and impact of repeated movements.

[0032] In this embodiment, the electric actuator 3 is equipped with a current limit protector to protect the motor of the electric actuator 3. When the actuator reaches its limit position or encounters abnormal resistance that causes it to stall, the protector detects excessive current and automatically cuts off the motor power supply, thereby preventing damage to the electric actuator 3.

[0033] Working principle:

[0034] Locked state: The electric push rod 3 is in the extended state. Its telescopic end pushes or pulls the connecting arm 401 of the customized safety card 4, causing the locking tongue of the customized safety card 4 to rotate to the top of the slot of the hook body 1, effectively preventing the slings or the suspended object from coming out.

[0035] Issue unlock command: The operator sends an "unlock" wireless signal via a handheld remote control from the ground or control room.

[0036] Signal reception and drive: The wireless signal receiving module 7 receives the instruction, decodes it, and controls the electric push rod 3 to retract.

[0037] To perform the unlocking action: the electric push rod 3 retracts, pulling the connecting arm 401 of the custom safety card 4 through the hinge point, causing the custom safety card 4 to rotate in the direction away from the hook slot. In this embodiment, refer to the attached... Figure 1-2Rotate counterclockwise, the specific angle of which is determined by the design of the hook and safety catch, thereby opening the slot channel to facilitate the insertion or release of the internal load.

[0038] Issuing the locking command: After the load is properly attached, the operator sends a "lock" wireless signal via remote control.

[0039] Execute the locking action: The wireless signal receiving module 7 receives the instruction and drives the electric push rod 3 to extend, pushing the customized safety card 4 to rotate and reset to the locked position.

[0040] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An automatic opening and closing device for a crane hook safety catch, comprising a hook body (1), characterized in that, The top two sides of the hook body (1) are fixedly connected to brackets (2). The brackets (2) are connected to an electric push rod (3) by bearings inside. The hook body (1) is connected to a custom safety card (4) by bearings on the inner side near the top. The top of the hook body (1) away from the custom safety card (4) is fixedly connected to an equipment box (5). The equipment box (5) is equipped with a battery pack (6). The bottom of the equipment box (5) is fixedly connected to a wireless signal receiving module (7).

2. The automatic opening and closing device for a crane hook safety catch according to claim 1, characterized in that, The customized insurance card (4) is fixedly connected to the middle of the connecting arm (401), and the telescopic end of the electric push rod (3) is hinged to the end of the connecting arm (401).

3. The automatic opening and closing device for a crane hook safety catch according to claim 2, characterized in that, The connecting arm (401) is made of alloy steel.

4. The automatic opening and closing device for a crane hook safety catch according to claim 1, characterized in that, The battery pack (6) is a rechargeable lithium battery.

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