Limiting safety device for lifting hook of crane

Abstract

The utility model relates to a crane hook limiting safety device, which belongs to the technical field of hook limiting safety devices and comprises a fixing rod, a connecting rope is fixed at the bottom end of the fixing rod, a crane hook body is fixed at the bottom end of the connecting rope, a hoisting rope is fixed at the top end of the fixing rod, and a safety mechanism is arranged on the outer side of the fixing rod. And an anti-falling assembly is arranged on the right side wall of the inner cavity of the crane hook body. According to the crane hook limiting safety device, the safety distance can be measured more accurately, when the ultrasonic distance controller is not used, the electric push rod can be started to drive the connecting plate to overturn downwards, and the safety of the crane hook can be guaranteed through real-time distance detection of the ultrasonic distance controller. The lifting hook can be effectively prevented from colliding with surrounding objects or the ground in the lifting process, so that the risk of safety accidents is greatly reduced, the safety and efficiency of production operation can be improved, and the purpose of continuously improving safety production is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of hook limiting safety devices, specifically a crane hook limiting safety device. Background Technology

[0002] A crane is a lifting machine that vertically lifts and horizontally moves heavy objects within its range of motion. In a work cycle, the corresponding mechanisms for picking up, moving, and unloading materials work alternately. Crane limit mechanisms are an indispensable and important component in the field of crane safety. Existing hook fall prevention safety devices and safety limit devices may malfunction or fail during maintenance or operation, or due to environmental factors and the influence of operation, maintenance, and upkeep, which can lead to unacceptable safety accidents.

[0003] For example, CN221500347U discloses a crane hook limiting device, including a support frame, on which a lifting assembly and a winding assembly are connected. The lifting assembly and the winding assembly are connected. A limiting component is provided at the moving end of the lifting assembly. The limiting component is connected to a balancing component to reduce the sway amplitude, and the winding assembly is connected to the balancing component. The lifting assembly includes a drive mechanism, the output end of which is connected to a traction rope. The traction rope passes over the surface of a pulley, which is rotatably disposed inside the assembly. Both ends of the traction rope slide through the top of the assembly, and a hook is provided at the bottom of the assembly. The limiting component includes a base plate, the top of which has a groove. A first clamping plate is slidably installed inside the groove, and a second clamping plate is fixedly installed on the top of the base plate. The utility model limits the assembly and hook by using the limiting component to reduce their sway amplitude.

[0004] Although the aforementioned patent uses a limiting component to limit the kit and hook, reducing their swaying amplitude, the existing technology of this patent relies on visual observation of the distance between the lifting height of the hoisting equipment and the height of the hook and the cargo, especially when precise lifting is required. This may result in the cargo or equipment not being placed properly, and repeated operations may cause accidents. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a crane hook limiting safety device that can detect the safe distance of the hook's ascent or descent, thereby ensuring the normal lifting of goods and eliminating safety hazards during production operations. It solves the problem that in existing technologies, the height of lifting or descent of crane equipment is determined by visually observing the distance of the hook and the goods, which may lead to improper placement of goods or equipment, repeated operations, and potential injuries, especially when precise lifting is required.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A crane hook limiting safety device includes a fixed rod, a connecting rope fixed to the bottom end of the fixed rod, a crane hook body fixed to the bottom end of the connecting rope, a lifting rope fixed to the top end of the fixed rod, a safety mechanism provided on the outer side of the fixed rod, and an anti-detachment component provided on the right side wall of the inner cavity of the crane hook body.

[0008] The safety mechanism includes a fixed cylinder rotatably connected to the outside of a fixed rod via bearings. A first transmission wheel is fixed to the outside of the fixed cylinder. A mounting plate is fixed to the right side of the fixed rod. A motor is fixed to the lower surface of the mounting plate. A second transmission wheel is fixed to the outside of the motor's output shaft. The first and second transmission wheels are connected by a belt drive. A connecting plate is hinged to the left side of the fixed cylinder via a hinge seat. An ultrasonic distance controller is fixed to the left side of the lower surface of the connecting plate. An electric push rod is hinged to the left side of the fixed cylinder via a hinge seat. The outside of the electric push rod's output shaft is hinged to the upper surface of the connecting plate via a hinge seat.

[0009] Furthermore, the safety mechanism also includes a limit frame fixed on the left side of the fixed cylinder, the bottom end of which is in contact with the upper surface of the connecting plate.

[0010] Furthermore, the anti-detachment component includes a threaded groove formed on the right side wall of the inner cavity of the crane hook body, and a threaded hole is formed through the left side of the crane hook body. A threaded rod is threadedly connected to the threaded hole and the threaded groove, and a handle is fixed to the left side of the threaded rod.

[0011] Furthermore, the anti-detachment component also includes a first fixing half-ring fixed to the right side of the crane hook body, a safety rope fixed to the outside of the first fixing half-ring, a second fixing half-ring fixed to the right side of the fixing rod, and the end of the safety rope away from the first fixing half-ring fixed to the outside of the second fixing half-ring.

[0012] Furthermore, a baffle plate is rotatably connected to the right side wall of the inner cavity of the crane hook body via a torsion spring.

[0013] Furthermore, the connecting rope, hoisting rope, and safety rope are all steel wire ropes.

[0014] Furthermore, the connecting rope is located on the longitudinal central axis of the fixed rod.

[0015] Furthermore, the fixing cylinder moves circumferentially on the outside of the fixing rod.

[0016] Compared with the prior art, this utility model provides a crane hook limiting safety device, which has the following beneficial effects:

[0017] 1. This crane hook limit safety device allows the ultrasonic distance controller to rotate by starting the motor, thereby adjusting its position. Position adjustment allows the ultrasonic distance controller to adjust its detection direction or angle according to actual operation needs to more accurately measure the safety distance. When the ultrasonic distance controller is not in use, the connecting plate can be flipped downward by starting the electric push rod, thereby retracting the ultrasonic distance controller. Through the real-time distance detection of the ultrasonic distance controller, collisions between the hook and surrounding objects or the ground during hoisting can be effectively avoided, thus greatly reducing the risk of safety accidents. This improves the safety and efficiency of production operations, thereby achieving the goal of continuous improvement in safe production.

[0018] 2. The crane hook limit safety device, through a variety of safety measures such as threaded connection device, safety rope and baffle device, can effectively prevent the goods from falling off the hook, reduce hook sway, and ensure the stability of the goods during the lifting process, thereby reducing the risk of safety accidents. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the safety mechanism of this utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure between the motor and the second transmission wheel of this utility model;

[0022] Figure 4 This is a schematic diagram of the anti-detachment component of this utility model.

[0023] In the diagram: 1. Fixed rod, 2. Connecting rope, 3. Crane hook body, 4. Lifting rope, 5. Safety mechanism, 501. Fixed cylinder, 502. First transmission wheel, 503. Mounting plate, 504. Motor, 505. Second transmission wheel, 506. Connecting plate, 507. Ultrasonic distance controller, 508. Electric push rod, 509. Limiting frame, 6. Anti-detachment component, 601. Threaded groove, 602. Threaded hole, 603. Threaded rod, 604. Handle. Detailed Implementation

[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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1The crane hook limiting safety device in this embodiment includes a fixed rod 1, a connecting rope 2 fixed to the bottom end of the fixed rod 1, a crane hook body 3 fixed to the bottom end of the connecting rope 2, a lifting rope 4 fixed to the top end of the fixed rod 1, a safety mechanism 5 provided on the outside of the fixed rod 1, and an anti-detachment component 6 provided on the right side wall of the inner cavity of the crane hook body 3.

[0026] In this embodiment, a baffle is rotatably connected to the right side wall of the inner cavity of the crane hook body 3 via a torsion spring. The connecting rope 2, the hoisting rope 4, and the safety rope are all steel wire ropes. The connecting rope 2 is located on the longitudinal central axis of the fixed rod 1.

[0027] Please see Figures 2 to 3 In this embodiment, the safety mechanism 5 includes a fixed cylinder 501 rotatably connected to the outside of the fixed rod 1 via a bearing. A first transmission wheel 502 is fixed to the outside of the fixed cylinder 501. A mounting plate 503 is fixed to the right side of the fixed rod 1. A motor 504 is fixed to the lower surface of the mounting plate 503. A second transmission wheel 505 is fixed to the outside of the output shaft of the motor 504. The first transmission wheel 502 and the second transmission wheel 505 are connected by a belt drive. A connecting plate 506 is hinged to the left side of the fixed cylinder 501 via a hinge seat. An ultrasonic distance controller 507 is fixed to the left side of the lower surface of the connecting plate 506. An electric push rod 508 is hinged to the left side of the fixed cylinder 501 via a hinge seat. The outside of the output shaft of the electric push rod 508 is hinged to the upper surface of the connecting plate 506 via a hinge seat.

[0028] Specifically, the ultrasonic distance controller 507 includes an ultrasonic sensor module, a microcontroller, a power management unit, a display and alarm module, a connection and communication circuit, and other auxiliary modules. The ultrasonic distance controller 507 can realize non-contact distance measurement and is widely used in fields such as robot obstacle avoidance, liquid level measurement, and automatic door control.

[0029] Specifically, the safety mechanism 5 also includes a limit frame 509 fixed on the left side of the fixed cylinder 501. The bottom end of the limit frame 509 is in contact with the upper surface of the connecting plate 506, and the fixed cylinder 501 moves circumferentially on the outside of the fixed rod 1.

[0030] It should be noted that the ultrasonic distance controller 507 can detect the safe distance of the crane hook body 3 when it rises or falls, thereby ensuring the normal lifting of goods, eliminating safety hazards in the production process, and achieving the goal of continuous improvement in safe production. By starting the motor 504, the ultrasonic distance controller 507 can be rotated through the first transmission wheel 502 and the second transmission wheel 505 to achieve position adjustment. When the ultrasonic distance controller 507 is not in use, the connecting plate 506 can be flipped downward by starting the electric push rod 508 to achieve retraction.

[0031] Please see Figure 4In this embodiment, the anti-detachment component 6 includes a threaded groove 601 formed on the right side wall of the inner cavity of the crane hook body 3, and a threaded hole 602 is formed through the left side of the crane hook body 3. A threaded rod 603 is threadedly connected to the threaded hole 602 and the threaded groove 601, and a handle 604 is fixed on the left side of the threaded rod 603.

[0032] Specifically, the anti-detachment component 6 also includes a first fixed half-ring fixed to the right side of the crane hook body 3, a safety rope fixed to the outside of the first fixed half-ring, a second fixed half-ring fixed to the right side of the fixed rod 1, and the end of the safety rope away from the first fixed half-ring fixed to the outside of the second fixed half-ring.

[0033] It should be noted that the crane hook body 3 can hook the object to be lifted, and the lifting rope 4 can be wound up through the external winding structure. Then, the goods hooked by the crane hook body 3 can be lifted and transported. After the crane hook body 3 hooks the object, the threaded rod 603 can be threaded into the threaded groove 601 and the threaded hole 602 to seal the opening of the crane hook body 3 and prevent it from coming off the hook. The safety rope can improve the stability of the crane hook body 3. The baffle can rotate downward inside the crane hook body 3 but cannot rotate upward, which can improve the stability of the crane hook body 3 in hooking the goods.

[0034] The working principle of the above embodiments is as follows:

[0035] In use, the crane hook body 3 can hook the object to be lifted, and the lifting rope 4 can be wound up through the external winding structure. Then, the goods hooked by the crane hook body 3 can be lifted and transported. After the crane hook body 3 hooks the object, the threaded rod 603 can be threaded into the threaded groove 601 and the threaded hole 602 to seal the opening of the crane hook body 3 and prevent it from coming off. The safety rope can improve the stability of the crane hook body 3. The baffle can rotate downward inside the crane hook body 3 but cannot rotate upward. This can improve the stability of the crane hook body 3 when hooking the goods. The ultrasonic distance controller 507 can detect the safe distance of the crane hook body 3 when rising or falling, thereby ensuring the normal lifting of goods and eliminating safety hazards in the production operation process, so as to achieve continuous improvement in safe production. By starting the motor 504, the ultrasonic distance controller 507 can be rotated through the first transmission wheel 502 and the second transmission wheel 505 to achieve position adjustment. When the ultrasonic distance controller 507 is not in use, the connecting plate 506 can be flipped downward by starting the electric push rod 508 to achieve retraction.

[0036] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application 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 application.

[0037] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] 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. A crane hook limiting safety device, comprising a fixing rod (1), characterized in that: The bottom end of the fixed rod (1) is fixed with a connecting rope (2), the bottom end of the connecting rope (2) is fixed with a crane hook body (3), the top end of the fixed rod (1) is fixed with a hoisting rope (4), a safety mechanism (5) is provided on the outside of the fixed rod (1), and an anti-detachment component (6) is provided on the right side wall of the inner cavity of the crane hook body (3). The safety mechanism (5) includes a fixed cylinder (501) rotatably connected to the outside of the fixed rod (1) via a bearing. A first transmission wheel (502) is fixed to the outside of the fixed cylinder (501). A mounting plate (503) is fixed to the right side of the fixed rod (1). A motor (504) is fixed to the lower surface of the mounting plate (503). A second transmission wheel (505) is fixed to the outside of the output shaft of the motor (504). The first transmission wheel (502) and the second transmission wheel (505) are connected by a belt drive. A connecting plate (506) is hinged to the left side of the fixed cylinder (501) via a hinge seat. An ultrasonic distance controller (507) is fixed to the left side of the lower surface of the connecting plate (506). An electric push rod (508) is hinged to the left side of the fixed cylinder (501) via a hinge seat. The outside of the output shaft of the electric push rod (508) is hinged to the upper surface of the connecting plate (506) via a hinge seat.

2. The crane hook limiting safety device according to claim 1, characterized in that: The safety mechanism (5) also includes a limit frame (509) fixed on the left side of the fixed cylinder (501), the bottom end of the limit frame (509) being in contact with the upper surface of the connecting plate (506).

3. The crane hook limiting safety device according to claim 1, characterized in that: The anti-detachment component (6) includes a threaded groove (601) opened on the right side wall of the inner cavity of the crane hook body (3), and a threaded hole (602) is opened through the left side of the crane hook body (3). A threaded rod (603) is threadedly connected to the threaded hole (602) and the threaded groove (601), and a handle (604) is fixed on the left side of the threaded rod (603).

4. A crane hook limiting safety device according to claim 3, characterized in that: The anti-detachment component (6) also includes a first fixed half-ring fixed to the right side of the crane hook body (3), a safety rope fixed to the outside of the first fixed half-ring, a second fixed half-ring fixed to the right side of the fixed rod (1), and the end of the safety rope away from the first fixed half-ring fixed to the outside of the second fixed half-ring.

5. A crane hook limiting safety device according to claim 1, characterized in that: The right side wall of the inner cavity of the crane hook body (3) is rotatably connected to a baffle plate by a torsion spring.

6. A crane hook limiting safety device according to claim 4, characterized in that: The connecting rope (2), hoisting rope (4) and safety rope are all steel wire ropes.

7. A crane hook limiting safety device according to claim 1, characterized in that: The connecting rope (2) is located on the longitudinal centerline of the fixed rod (1).

8. A crane hook limiting safety device according to claim 1, characterized in that: The fixed cylinder (501) moves circumferentially on the outside of the fixed rod (1).

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