A hook positioning device for a portal crane

Abstract

The utility model discloses a door -type crane is with hook positioning device relates to door -type crane technical field, including steel cable fixed pulley, the steel cable fixed pulley outside face lower part is provided with battery, the both sides of steel cable fixed pulley outside are provided with warning light, battery one side is provided with servo motor, one end of servo motor is connected with ultrasonic range finder through worm and worm gear speed reduction mechanism. The utility model discloses the ultrasonic range finder, servo motor and battery of setting, make ultrasonic range finder can measure the distance of hook to hook crossbeam structure, and then accurately measure the height of the lower hanging of hook, guarantee the positioning accuracy of hook.

Description

Technical Field

[0001] This utility model relates to the field of gantry crane technology, specifically to a hook positioning device for a gantry crane. Background Technology

[0002] Gantry cranes are a variation of bridge cranes. In ports, they are mainly used for loading and unloading cargo and bulk materials in outdoor freight yards and material yards. Their metal structure resembles a portal frame, with two legs supporting the main beam, allowing them to travel directly on ground-level rails. The main beam can have cantilever beams extending outwards at both ends. Gantry cranes are characterized by high site utilization, large operating range, wide adaptability, and strong versatility, and are widely used in port freight yards.

[0003] When using a gantry crane, the height of the crane hook needs to be measured to ensure the position of the goods being lifted, thus guaranteeing the positioning of the hook during movement and ensuring the smooth progress of the lifting process.

[0004] Existing hook positioning devices measure the height of the hook by installing a position sensor on the hook. However, the accuracy of the hook height measurement is affected by the sensor's sensing accuracy. In addition, existing hooks lack easily identifiable positioning structures, making it inconvenient for ground personnel to locate the hook's position. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a hook positioning device for gantry cranes. By using an ultrasonic rangefinder, a servo motor and a battery, the ultrasonic rangefinder can measure the distance from the hook to the hook beam structure, thereby accurately measuring the lowering height of the hook and ensuring the positioning accuracy of the hook. This can effectively solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hook positioning device for a gantry crane, comprising a steel cable pulley, a battery disposed on the lower part of the outer side of the steel cable pulley, warning lights disposed on both outer sides of the steel cable pulley, a servo motor disposed on one side of the battery, and an ultrasonic rangefinder connected to one end of the servo motor via a worm gear reduction mechanism.

[0007] Furthermore, a fixing plate is installed on the end of the warning light near the fixed pulley of the steel cable, and a base is provided on the side of the servo motor near the fixed pulley of the steel cable.

[0008] Furthermore, a support frame is fixedly connected to the lower side of the steel cable pulley, and a hook is fixedly connected to the lower end of the support frame.

[0009] Furthermore, an anti-detachment baffle is rotatably connected to the hook, and a coil spring is provided at the hinge position between the anti-detachment baffle and the hook.

[0010] Furthermore, the ultrasonic rangefinder has a rotation angle range of 0-360 degrees, and the battery casing is connected to the steel cable pulley by screws.

[0011] Furthermore, the warning light is connected to the steel cable pulley via the fixing plate, and the warning light has an IP protection rating of IP66.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model, through the installation of an ultrasonic rangefinder, servo motor and storage battery, enables the ultrasonic rangefinder to measure the distance from the hook to the hook beam structure, thereby accurately measuring the lowering height of the hook and ensuring the positioning accuracy of the hook;

[0014] 2. This utility model, through the setting of a warning light and a fixing plate, allows the warning light to be installed on the steel cable pulley via the fixing plate. The flashing of the warning light can indicate the position of the hook to ground personnel, thereby facilitating the location of the hook by ground personnel. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This utility model Figure 1 A side view of the servo motor and ultrasonic rangefinder.

[0017] Figure 3 This utility model Figure 1 A side view of the warning light structure.

[0018] In the diagram: 1. Hook; 2. Anti-detachment baffle; 3. Support frame; 4. Steel cable pulley; 5. Ultrasonic rangefinder; 6. Servo motor; 7. Battery; 8. Support frame; 9. Warning light; 10. Fixing plate. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-3This embodiment provides a technical solution: a hook positioning device for a gantry crane, including a steel cable pulley 4, a battery 7 is provided on the lower part of the outer side of the steel cable pulley 4, warning lights 9 are provided on both outer sides of the steel cable pulley 4, a servo motor 6 is provided on one side of the battery 7, and an ultrasonic rangefinder 5 is connected to one end of the servo motor 6 through a worm gear reduction mechanism.

[0021] like Figure 1-3 As shown, during use, the steel cable passes through the steel cable pulley 4. The raising and lowering of the steel cable allows the steel cable pulley 4 to move up and down, which in turn moves the hook 1 up and down, enabling the lifting of goods. The anti-derailment baffle 2 prevents the lifting cable from slipping out of the hook 1. When the steel cable pulley 4 is being adjusted in height, the ultrasonic rangefinder 5 can measure the distance from the steel cable pulley 4 to the lifting beam, thereby calculating the downward lifting height of the hook 1. When there is no goods hanging below the hook 1, the servo motor 6 can drive the ultrasonic rangefinder 5 to rotate, making the measuring direction downward, so that the ultrasonic rangefinder 5 can measure the distance from the steel cable pulley 4 to the ground or to the goods, thereby determining the position of the hook 1. The warning light 9 can flash to indicate the position of the hook 1 to ground personnel.

[0022] A fixing plate 10 is installed on one end of the warning light 9 near the fixed pulley 4 of the steel cable. A base 8 is provided on the side of the servo motor 6 near the fixed pulley 4 of the steel cable. The base 8 can stably support the servo motor 6, so that the servo motor 6 can be fixed on the fixed pulley 4 of the steel cable. The fixing plate 10 can install and fix the warning light 9.

[0023] A support frame 3 is fixedly connected to the lower side of the steel cable pulley 4, and a hook 1 is fixedly connected to the lower end of the support frame 3. The hook 1 can lift goods, and the support frame 3 can fix and support the hook 1.

[0024] A rotatable anti-detachment baffle 2 is rotatably connected to the hook 1. A coil spring is provided at the hinge position between the anti-detachment baffle 2 and the hook 1. The coil spring allows the anti-detachment baffle 2 to be locked onto the hook 1, preventing the hoisting cable from slipping out of the hook 1.

[0025] The ultrasonic rangefinder 5 has a rotation angle range of 0-360 degrees. The battery 7 casing is connected to the steel cable pulley 4 by screws. The battery 7 provides power to the servo motor 6, the ultrasonic rangefinder 5 and the warning light 9.

[0026] The warning light 9 is connected to the steel cable pulley 4 via the fixing plate 10, and the IP protection level of the warning light 9 is IP66.

[0027] The working principle of the hook positioning device for a gantry crane provided by this utility model is as follows: Figures 1-3As shown, during use, the steel cable passes through the steel cable pulley 4. The raising and lowering of the steel cable allows the steel cable pulley 4 to move up and down, which in turn moves the hook 1 up and down, enabling the lifting of goods. The anti-derailment baffle 2 prevents the lifting cable from slipping out of the hook 1. When the steel cable pulley 4 is being adjusted in height, the ultrasonic rangefinder 5 can measure the distance from the steel cable pulley 4 to the lifting beam, thereby calculating the downward lifting height of the hook 1. When there is no goods hanging below the hook 1, the servo motor 6 can drive the ultrasonic rangefinder 5 to rotate, making the measuring direction downward, so that the ultrasonic rangefinder 5 can measure the distance from the steel cable pulley 4 to the ground or to the goods, thereby determining the position of the hook 1. The warning light 9 can flash to indicate the position of the hook 1 to ground personnel.

[0028] 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 based on the content of this utility model specification and drawings, 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 positioning device for a portal crane, comprising a wire rope fixed pulley (4), characterised in that: A battery (7) is provided on the lower part of the outer side of the steel cable fixed pulley (4). Warning lights (9) are provided on both sides of the outer side of the steel cable fixed pulley (4). A servo motor (6) is provided on one side of the battery (7). One end of the servo motor (6) is connected to an ultrasonic rangefinder (5) through a worm gear reduction mechanism.

2. A hook positioning device for a portal crane according to claim 1, characterized in that: The warning light (9) is fitted with a fixing plate (10) near the end of the steel cable pulley (4), and the servo motor (6) is fitted with a base (8) near the side of the steel cable pulley (4).

3. A hook positioning device for a portal crane according to claim 2, characterized in that: A support frame (3) is fixedly connected to the lower side of the steel cable pulley (4), and a hook (1) is fixedly connected to the lower end of the support frame (3).

4. A hook positioning device for a portal crane according to claim 3, characterized in that: An anti-detachment baffle (2) is rotatably connected to the hook (1), and a coil spring is provided at the hinge position between the anti-detachment baffle (2) and the hook (1).

5. A hook positioning device for a portal crane according to claim 1, characterized in that: The ultrasonic rangefinder (5) has a rotation angle range of 0-360 degrees, and the battery (7) casing is connected to the steel cable pulley (4) by screws.

6. A hook positioning device for a portal crane according to claim 2, characterized in that: The warning light (9) is connected to the steel cable pulley (4) through the fixing plate (10), and the IP protection level of the warning light (9) is IP66.

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