A safety positioning early warning device for bridge cranes

Abstract

A safety positioning and early warning device for a bridge crane includes a mounting bracket, a positioning mechanism, an early warning mechanism, and a controller. The positioning mechanism, early warning mechanism, and controller are connected to the mounting bracket, which is connected to the traveling mechanism of the bridge crane. The positioning mechanism is mounted on one side of the mounting bracket, and the early warning mechanism and controller are mounted on the other side. The device uses the visual detection function of an industrial camera to determine whether the crane is currently unloaded. For unloaded cranes, it provides a dual safety warning mode using both sound and light, alerting nearby ground personnel with visual and auditory effects. The safety positioning and early warning device moves synchronously with the traveling mechanism, and the actual outline of the hoisted cargo projected onto the ground by a laser projector moves accordingly, enabling real-time dynamic display of the fall risk area of ​​the hoisted cargo. The safety positioning and early warning device is connected to the crane's power supply, achieving an integrated power supply for both the safety positioning and early warning device and the crane.

Description

Technical Field

[0001] This invention relates to the field of crane safety technology, and in particular to a safety positioning and early warning device for bridge cranes. Background Technology

[0002] A bridge crane is a lifting device that spans across workshops, warehouses, and stockyards for material handling; it is also known as an overhead crane. The bridge frame of a bridge crane runs longitudinally along rails laid on elevated supports on both sides, while the lifting trolley runs laterally along rails laid on the bridge frame, forming a rectangular working area. This allows for full utilization of the space beneath the bridge frame for material handling without obstruction from ground equipment. These cranes are widely used in indoor and outdoor warehouses, factories, docks, and open-air storage yards.

[0003] Cranes are widely used, numerous, and have large parameters. They operate in harsh environments and involve a large number of workers, making accidents frequent. Statistics show that by the end of 2018, my country had 2.3479 million registered cranes, accounting for 16.84% of all special equipment. Cranes were involved in approximately 100 accidents annually, accounting for 45.66% of all special equipment accidents, primarily occurring during operation. During the lifting of goods by bridge cranes, improper operation, broken ropes, or snapped hooks often lead to the falling of loads. Ground personnel are often unaware of the crane operation above them, or even if they know there is operation above, they lack anticipation and awareness of the possibility of falling items. Combined with factors such as high noise levels in the work area and the unavoidable need for overlapping operations, ground personnel often lack visual warnings about the location of the fallen load. Therefore, accidents are prone to occur during lifting operations, resulting in injuries and fatalities. Currently used traditional cranes may be equipped with early warning devices, but these devices cannot move synchronously with the horizontal movement of the hoisted goods, causing the positioning warning to fail. Furthermore, they cannot accurately project the actual outline of the hoisted goods, resulting in warning errors and poor operational safety for bridge cranes. In addition, traditional crane safety warning devices require battery replacement, which is extremely inconvenient and poses safety hazards. Summary of the Invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this invention is to provide a safety positioning and early warning device for bridge cranes, which provides early warning of crane operation risks. The positioning device moves synchronously with the movement of the goods, accurately projecting the actual outline of the goods onto the ground, avoiding injury to personnel on the ground due to falling goods, and improving the operational safety of bridge cranes, thereby solving the problems mentioned in the background art.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a bridge crane safety positioning early warning device, including a mounting bracket, a positioning mechanism, an early warning mechanism and a controller, wherein the positioning mechanism, the early warning mechanism and the controller are connected to the mounting bracket, the mounting bracket is connected to the traveling mechanism of the bridge crane, the positioning mechanism is mounted on one side of the mounting bracket, and the early warning mechanism and the controller are mounted on the other side of the mounting bracket.

[0006] As a further improvement of the present invention: the mounting bracket is disposed on one side of the traveling mechanism, the mounting bracket includes an upper bracket and a lower bracket, the upper bracket is fixedly mounted on the traveling slider of the traveling mechanism, and the upper bracket is connected to the lower bracket.

[0007] As a further improvement of the present invention: the positioning mechanism includes a laser projector and an industrial camera, and the early warning mechanism is an audible and visual alarm.

[0008] As a further improvement of the present invention: the laser projector is connected to the lower bracket, the laser projector is mounted on the left side of the industrial camera, the laser projector is connected to the controller through a signal line, and the laser projector projects an image toward the side of the hoisted goods.

[0009] As a further improvement of the present invention: the industrial camera is connected to the lower bracket, the industrial camera is mounted on the right side of the laser projector, the industrial camera is connected to the controller through a signal line, and the industrial camera is facing the side of the hoisted goods to take pictures.

[0010] As a further improvement of the present invention: the controller is connected to the lower bracket, the controller is mounted on the right side of the industrial camera, and the controller is connected to the laser projector, the industrial camera and the audible and visual alarm.

[0011] As a further improvement of the present invention: the audible and visual alarm is connected to the lower bracket, the audible and visual alarm is mounted on the right side of the controller, and the audible and visual alarm is connected to the controller for control.

[0012] As a further improvement of the present invention: the positioning mechanism, the early warning mechanism and the controller are electrically connected to the power supply device of the traveling mechanism via a power line.

[0013] As a further improvement of the present invention: the bridge crane safety positioning early warning device further includes a traveling mechanism and a lifting mechanism. The traveling mechanism includes a traveling trolley, a traveling slider and a power supply device. The traveling trolley is connected to the crane bridge frame. The traveling slider is located on both sides of the traveling trolley and is connected to the track of the crane bridge frame. The upper support spans the traveling sliders on both sides of the traveling trolley. The power supply device is installed inside the traveling trolley.

[0014] As a further improvement of the present invention: the traveling mechanism is connected to the lifting mechanism, the lifting mechanism includes a drum assembly, a wire rope and a hook, the drum assembly is connected to the wire rope, the wire rope is connected to the hook, and the wire rope and the hook are located below the traveling mechanism.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: Compared with the safety warning technology of traditional cranes, the present invention uses the visual detection function of industrial cameras to determine whether the crane is currently unloaded, and provides a dual safety warning mode of sound and light for non-unloaded crane states, using visual and auditory effects to remind nearby ground personnel.

[0016] The mounting bracket of this invention is connected to the crane's traveling mechanism. The safety positioning and early warning device moves synchronously with the traveling mechanism. The actual outline of the hoisted goods projected onto the ground by the laser projector moves accordingly, enabling the safety positioning and early warning device to dynamically display the risk area of ​​the hoisted goods falling in real time, eliminating the risk of misjudgment by personnel due to projection errors.

[0017] The safety positioning and early warning device is connected to the crane's power supply, realizing an integrated power supply for the safety positioning and early warning device and the crane. This allows the safety positioning and early warning device and the crane to start and stop synchronously, avoiding situations where the industrial camera, laser projector, and audible and visual alarm fail due to the safety positioning and early warning device's battery not being replaced in time, thus preventing dangerous crane operations. Attached Figure Description

[0018] Figure 1 This is a partial structural diagram of the present invention;

[0019] Figure 2 This is a partial structural diagram of the present invention;

[0020] Figure 3 This is a partial structural front view of the present invention;

[0021] Figure 4 This is a schematic diagram of the overall structure of the present invention.

[0022] Explanation of the labels in the diagram:

[0023] 1. Mounting bracket; 11. Upper bracket; 12. Lower bracket; 2. Positioning mechanism; 21. Laser projector; 22. Industrial camera; 3. Controller; 4. Audible and visual alarm; 5. Crane mechanism; 51. Crane slider; 52. Crane trolley; 6. Lifting mechanism; 61. Drum assembly; 62. Wire rope; 63. Hook. Detailed Implementation

[0024] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0025] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0026] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and 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 present invention.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] The present invention will now be further described in conjunction with the accompanying drawings and embodiments: such as Figures 1 to 4 As shown, a bridge crane safety positioning early warning device includes a mounting bracket 1, a positioning mechanism 2, an early warning mechanism, and a controller 3. The positioning mechanism 2, the early warning mechanism, and the controller 3 are connected to the mounting bracket 1. The mounting bracket 1 is connected to the traveling mechanism 5 of the bridge crane. The positioning mechanism 2 is mounted on one side of the mounting bracket 1, and the early warning mechanism and the controller 3 are mounted on the other side of the mounting bracket 1.

[0029] The mounting bracket 1 is located on one side of the traveling mechanism 5. The mounting bracket 1 includes an upper bracket 11 and a lower bracket 12. The upper bracket 11 is fixedly mounted on the traveling slider 51 of the traveling mechanism 5. The upper bracket 11 is connected to the lower bracket 12.

[0030] The positioning mechanism 2 includes a laser projector 21 and an industrial camera 22, and the early warning mechanism is an audible and visual alarm 4.

[0031] The laser projector 21 is connected to the lower bracket 12. The laser projector 21 is mounted on the left side of the industrial camera 22. The laser projector 21 is connected to the controller 3 via a signal line. The laser projector 21 projects an image toward the side of the hoisted goods.

[0032] The industrial camera 22 is connected to the lower bracket 12. The industrial camera 22 is mounted on the right side of the laser projector 21. The industrial camera 22 is connected to the controller 3 via a signal line. The industrial camera 22 is facing the side of the hoisted goods to take pictures.

[0033] The controller 3 is connected to the lower bracket 12. The controller 3 is mounted on the right side of the industrial camera 22. The controller 3 is connected to the laser projector 21, the industrial camera 22 and the sound and light alarm 4.

[0034] The audible and visual alarm 4 is connected to the lower bracket 12. The audible and visual alarm 4 is mounted on the right side of the controller 3 and is controlled by the controller 3.

[0035] The positioning mechanism 2, the early warning mechanism, and the controller 3 are electrically connected to the power supply device of the traveling mechanism 5 via power lines.

[0036] The bridge crane safety positioning and early warning device also includes a traveling mechanism 5 and a lifting mechanism 6. The traveling mechanism 5 includes a traveling trolley 52, a traveling slider 51, and a power supply device. The traveling trolley 52 is connected to the crane bridge frame. The traveling slider 51 is located on both sides of the traveling trolley 52 and is connected to the track of the crane bridge frame. The upper support 11 spans the traveling sliders 51 on both sides of the traveling trolley 52. ​​The power supply device is installed inside the traveling trolley 52.

[0037] The traveling mechanism 5 is connected to the lifting mechanism 6. The lifting mechanism 6 includes a drum assembly 61, a wire rope 62, and a hook 63. The drum assembly 61 is connected to the wire rope 62, and the wire rope 62 is connected to the hook 63. The wire rope 62 and the hook 63 are located below the traveling mechanism 5.

[0038] The working principle of this invention is as follows: When the overhead crane gantry mechanism 5 is powered on and started, the industrial camera 22, laser projector 21, and audible and visual alarm 4 are powered on and start working simultaneously. The industrial camera 22 takes pictures in the direction of the hook. The vision detection system of the industrial camera 22 starts to detect in real time whether there is cargo hanging below the hook. If the vision detection system determines that there is cargo hanging below the hook, the industrial camera 22 outputs a signal to the controller 3 through the signal line. The controller 3 transmits the signal to the audible and visual alarm 4 through the signal line. After receiving the signal, the audible and visual alarm 4 immediately activates the alarm function, emitting a prompt sound and flashing lights to remind personnel on the ground below that the crane is performing lifting operations, thus realizing the visual and auditory warning function.

[0039] When the vision inspection system of industrial camera 22 determines that the hook is carrying goods, it records the geometric parameters of the goods below the hook. The system then transmits this data to controller 3 via a signal line. After calculation and conversion by controller 3, the signal is transmitted to laser projector 21. Laser projector 21 projects the fall risk area corresponding to the hoisted goods, using a conspicuous outline projection light to alert personnel on the ground, thus achieving a positioning and early warning function. When the overhead crane 5 moves to lift the goods, the mounting bracket 1 connected to the overhead crane slider 51 moves synchronously. The projection of the fall risk area onto the ground by laser projector 21 also moves accordingly, dynamically displaying the fall risk area projection for more accurate and direct alerts to personnel on the ground.

[0040] When the overhead crane gantry mechanism 5 stops working and the power is disconnected, the safety positioning warning device will also be de-energized and stop working. It will not restart working until the overhead crane gantry mechanism 5 is powered on again.

[0041] The main function of this invention is to determine whether the crane is currently unloaded by using the visual detection function of an industrial camera, and to provide a dual safety warning mode of sound and light for non-unloaded cranes, using visual and auditory effects to remind people on the ground nearby.

[0042] The mounting bracket of this invention is connected to the crane's traveling mechanism. The safety positioning and early warning device moves synchronously with the traveling mechanism. The actual outline of the hoisted goods projected onto the ground by the laser projector moves accordingly, enabling the safety positioning and early warning device to dynamically display the risk area of ​​the hoisted goods falling in real time, eliminating the risk of misjudgment by personnel due to projection errors.

[0043] The safety positioning and early warning device is connected to the crane's power supply, realizing an integrated power supply for the safety positioning and early warning device and the crane. This allows the safety positioning and early warning device and the crane to start and stop synchronously, avoiding situations where the industrial camera, laser projector, and audible and visual alarm fail due to the safety positioning and early warning device's battery not being replaced in time, thus preventing dangerous crane operations.

[0044] In summary, after reading this invention document, those skilled in the art can make various other corresponding modifications to the technical solutions and concepts based on this invention without creative mental effort, and all of these modifications fall within the scope of protection of this invention.

Claims

1. A safety positioning early warning device for a bridge crane, characterized in that, The system includes a mounting bracket, a positioning mechanism, a warning mechanism, and a controller. The positioning mechanism, warning mechanism, and controller are connected to the mounting bracket, which is connected to the traveling mechanism of the bridge crane. The positioning mechanism is mounted on one side of the mounting bracket, and the warning mechanism and controller are mounted on the other side. The mounting bracket, located on one side of the traveling mechanism, includes an upper bracket and a lower bracket. The upper bracket is fixedly mounted on the traveling slider of the traveling mechanism and is connected to the lower bracket. The positioning mechanism includes a laser projector and an industrial camera. The warning mechanism is an audible and visual alarm. The laser projector is connected to the lower bracket and mounted to the left of the industrial camera. The laser projector is connected to the controller via a signal line and faces the hoisted goods. The system projects an image from one side; the industrial camera is connected to the lower support and mounted on the right side of the laser projector. The industrial camera is connected to the controller via a signal line and faces the side where the hoisted goods are being lifted. The vision inspection system of the industrial camera detects in real time whether there are goods hanging below the hook; the positioning mechanism, the early warning mechanism, and the controller are electrically connected to the power supply of the crane mechanism via a power line; if the vision inspection system determines that there are goods hanging below the hook, the vision inspection system records the geometric parameters of the goods below the hook. The vision inspection system transmits the geometric parameter data to the controller via a signal line. The controller calculates and converts the geometric parameter data and then transmits the signal to the laser projector. The laser projector projects the fall risk area corresponding to the hoisted goods.

2. The safety positioning and early warning device for a bridge crane according to claim 1, characterized in that, The controller is connected to the lower bracket and is mounted on the right side of the industrial camera. The controller is connected to the laser projector, the industrial camera, and the audible and visual alarm.

3. The safety positioning and early warning device for a bridge crane according to claim 2, characterized in that, The audible and visual alarm is connected to the lower bracket, the audible and visual alarm is mounted on the right side of the controller, and the audible and visual alarm is connected to the controller for control.

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