A positioning device for an unattended crane

Abstract

This utility model discloses a positioning device for an unattended crane, including a placement frame with positioning posts at the four corners of the frame. A first laser sensor is horizontally mounted on each positioning post. A first rack is mounted on the inner side of the track beam, and a first positioning mechanism is mounted on the end beam. The first positioning mechanism includes a first positioning shaft and a first positioning gear. The first positioning gear is fixedly connected to the bottom of the first positioning shaft and meshes with the first rack. An encoder is mounted on the top of the first positioning shaft. A second rack is mounted on the top of the main beam, and a second positioning mechanism is mounted on the crane trolley. The second positioning mechanism includes a second positioning shaft and a second positioning gear, which meshes with the second rack. An encoder is mounted on the top of the second positioning shaft. The data measured by the positioning mechanism is synchronized with the movement of the traveling mechanism, reducing the possibility of deviation and enabling the crane to operate stably for extended periods, thus reducing the frequency of regular maintenance.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, and in particular to a positioning device for unattended cranes. Background Technology

[0002] Unmanned cranes are highly automated, eliminating the need for repetitive manual operation. They automatically grab, precisely position, and place materials according to pre-set programs, reducing manual labor and improving production safety. They are widely used in locations such as battery swapping stations. However, in actual operation, it has been found that after a period of time, the crane will deviate from its intended path, causing the lifting device to fail to precisely align with the battery, requiring recalibration. This is caused by slippage in the crane's traveling mechanism, resulting in a discrepancy between the positioning device's recorded data and the actual movement of the traveling mechanism, thus causing the deviation. Utility Model Content

[0003] The purpose of this invention is to provide a positioning device for unattended cranes. The data measured by the positioning mechanism is synchronized with the movement of the traveling mechanism, reducing the possibility of deviation and enabling the crane to operate stably for a long time, thus reducing the frequency of regular maintenance.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a positioning device for an unattended crane, comprising a crane and two track beams. The crane includes two end beams mounted on the track beams. Two main beams are positioned between the two end beams. A lifting trolley runs on the main beams. A lifting mechanism is mounted on the lifting trolley. A lifting device is positioned below the lifting trolley and connected to the lifting mechanism via a wire rope. The device also includes a placement frame positioned at the starting and ending positions. Positioning posts are positioned at the four corners of the placement frame. First laser sensors are horizontally mounted on the positioning posts, and the four first laser sensors are arranged in a rectangular structure. A first rack is positioned on the inner side of the track beams. A first positioning mechanism is provided on the end beam. The first positioning mechanism includes a first positioning shaft and a first positioning gear. The first positioning shaft is rotatably connected to the inner side of the end beam, and the first positioning gear is fixedly connected to the bottom of the first positioning shaft. The first positioning gear meshes with a first rack, and an encoder is installed at the top of the first positioning shaft. A second rack is provided on the top of the main beam. A second positioning mechanism is provided on the crane trolley. The second positioning mechanism includes a second positioning shaft and a second positioning gear. The second positioning shaft is rotatably connected to the inner side of the crane trolley, and the second positioning gear is fixedly connected to the bottom of the second positioning shaft. The second positioning gear meshes with a second rack, and an encoder is installed at the top of the second positioning shaft.

[0005] Optionally, a second laser sensor is vertically mounted on one of the positioning posts.

[0006] Optionally, an industrial camera is mounted on the bottom of the spreader.

[0007] Optionally, the first positioning mechanism and the second positioning mechanism are provided with protective covers.

[0008] Optionally, cleaning brushes are installed on both sides of the protective cover.

[0009] The positioning device for unattended cranes of this invention has the following advantages: (1) Only when the end beam and the crane trolley move will the first positioning gear and the second positioning gear rotate on the first rack and the second rack, and the encoder will record the moving distance of the end beam and the crane trolley. When the end beam or the crane trolley slips, no actual displacement occurs, and the encoder will not record it, so as to ensure that the positioning mechanism matches the moving distance of the end beam and the crane trolley and ensure the accuracy of positioning.

[0010] (2) Industrial cameras and second laser sensors can assist in positioning and improve the accuracy of docking between the lifting device and the placement frame.

[0011] (3) The protective cover can protect the positioning mechanism, and the cleaning brush can clean the rack to ensure the stability of the meshing between the gear and the rack. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is the front view of this utility model.

[0014] Figure 3 This is a schematic diagram of the first positioning mechanism. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] like Figures 1-3As shown, a positioning device for an unattended crane is used for battery handling within a battery swapping station. It includes a crane and two track beams 1. The crane includes two end beams 2 mounted on the track beams 1. Two main beams 3 are positioned between the two end beams 2. A lifting trolley 4 runs on the main beams 3, and a lifting mechanism is mounted on the lifting trolley 4. A lifting device 5 is positioned below the lifting trolley 4 and connected to the lifting mechanism via a wire rope. The device also includes placement racks 6 at starting and ending positions. Batteries are placed within the placement racks 6. Positioning posts 7 are positioned at the four corners of the placement racks 6, and first laser sensors 8 are horizontally mounted on the positioning posts 7. The four first laser sensors 8 are arranged in a rectangular structure. By checking whether the first laser sensors 8 are obstructed, the device determines whether the battery placement is normal and whether there are obstacles around the placement racks 6. If no abnormalities are found, the crane proceeds with the battery handling operation. Both the starting and ending positions of the placement frame 6 have a positioning column 7 with a second laser sensor 9 vertically installed on it. By checking whether the second laser sensor 9 is blocked, it can be determined whether the lifting device 5 has moved to the top of the placement frame 6. An industrial camera 10 is installed at the bottom of the lifting device 5. The industrial camera 10 can help determine whether the lifting device 5 has moved into place and whether there is any abnormality on the placement frame 6, which is beneficial to the safe lifting and lowering of the lifting device 5.

[0017] A first rack 11 is provided on the inner side of the track beam 1, and a first positioning mechanism 12 is provided on the end beam 2. The first positioning mechanism 12 includes a first positioning shaft 14 and a first positioning gear 15. The first positioning shaft 14 is rotatably connected to the inner side of the end beam 2, and the first positioning gear 15 is fixedly connected to the bottom of the first positioning shaft 14. The first positioning gear 15 meshes with the first rack 11, and an encoder 16 is installed at the top of the first positioning shaft 14. A second rack 17 is provided on the top of the main beam 3, and a second positioning mechanism 18 is provided on the crane trolley 4. The second positioning mechanism 18 includes a second positioning shaft and a second positioning gear. The second positioning shaft is rotatably connected to the inner side of the crane trolley 4, and the second positioning gear is fixedly connected to the bottom of the second positioning shaft. The second positioning gear meshes with the second rack 17, and an encoder is installed at the top of the second positioning shaft. The positioning mechanism ensures that the first positioning gear 15 and the second positioning gear will only rotate on the first rack 11 and the second rack 17 when the end beam 2 and the trolley 4 are displaced. Only then will the encoder 16 record the movement distance of the end beam 2 and the trolley 4. When the end beam 2 or the trolley 4 slips, and the end beam 2 or the trolley 4 does not actually move, the first positioning gear 15 and the second positioning gear will not rotate, and the encoder 16 will not record data. This ensures that the data recorded by the positioning mechanism matches the movement distance of the end beam 2 and the trolley 4, ensuring the accuracy of the positioning. The first positioning mechanism 12 and the second positioning mechanism 18 are equipped with a protective cover 19. The protective cover 19 can isolate the external environment and provide a certain degree of protection for the positioning mechanism. Cleaning brushes 20 are installed on both sides of the protective cover 19. When the end beam 2 and the trolley 4 move, the cleaning brushes 20 can clean the rack and ensure the stability of the gear and rack meshing.

[0018] The first laser sensor 8 detects the placement status of the battery in the initial placement rack 6. If there is no abnormality, the end beam 2 and the crane trolley 4 move to move the lifting device 5 above the placement rack 6. The positioning mechanism ensures the accuracy of the movement of the lifting device 5. The second laser sensor 9 and the industrial camera 10 assist in positioning. The lifting device 5 can quickly and stably move the battery between the starting position and the ending position, reducing the possibility of deviation and enabling the crane to operate stably for a long time, reducing the frequency of regular maintenance.

[0019] The embodiments described above are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the protection scope of this utility model.

Claims

1. A positioning device for an unattended crane, comprising a crane and two track beams, the crane comprising two end beams arranged on the track beams, two main beams arranged between the end beams, a trolley running on the main beams, a hoisting mechanism arranged on the trolley, a spreader arranged below the trolley, and the spreader being connected to the hoisting mechanism by a wire rope, characterized in that: It also includes placement frames set at the starting and ending positions, with positioning posts at the four corners of the placement frames. A first laser sensor is horizontally mounted on each positioning post, and the four first laser sensors are arranged in a rectangular structure. A first rack is set on the inner side of the track beam, and a first positioning mechanism is set on the end beam. The first positioning mechanism includes a first positioning shaft and a first positioning gear. The first positioning shaft is rotatably connected to the inner side of the end beam, and the first positioning gear is fixedly connected to the bottom of the first positioning shaft. The first positioning gear meshes with the first rack, and an encoder is installed at the top of the first positioning shaft. A second rack is set on the top of the main beam, and a second positioning mechanism is set on the lifting trolley. The second positioning mechanism includes a second positioning shaft and a second positioning gear. The second positioning shaft is rotatably connected to the inner side of the lifting trolley, and the second positioning gear is fixedly connected to the bottom of the second positioning shaft. The second positioning gear meshes with the second rack, and an encoder is installed at the top of the second positioning shaft.

2. Positioning device for unattended crane according to claim 1, characterized in that: A second laser sensor is vertically mounted on one of the positioning posts.

3. Positioning device for unmanned crane according to claim 1, characterized in that: An industrial camera is mounted on the bottom of the lifting device.

4. The positioning device for an unattended crane according to claim 1, characterized in that: The first and second positioning mechanisms are equipped with protective covers.

5. Positioning device for unattended crane according to claim 4, characterized in that: Cleaning brushes are installed on both sides of the protective cover.

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