Crown block with protection system

Abstract

The utility model relates to the technical field of crown block protection, in particular to a crown block with a protection system.The crown block comprises a crown block body and a protection device arranged on the crown block body, the crown block body comprises a pair of bases which are parallel to each other and slidably arranged on the ground, and the length direction of the two bases is the same as the moving direction of the crown block body; moving wheels are rotationally arranged at the positions, close to the two ends, of the bases, driving motors for driving the moving wheels to rotate are fixed to the bases, and fixing frames for hoisting heavy objects are fixed to the two bases. The protection device comprises a laser scanning sensor and a controller which are arranged at the two ends of the base, the controller is electrically connected with the laser scanning sensor, the controller is electrically connected with the driving motor, and the laser scanning sensor can scan whether pedestrians pass in the running direction of the crown block body or not and transmit signals to the controller in time. The crown block has the effect of preventing the crown block from colliding with workers in the running process.

Description

Technical Field

[0001] The present application relates to the technical field of overhead crane protection, and in particular to an overhead crane with a protection system. Background Art

[0002] Overhead cranes, also known as bridge cranes, are bridge-type lifting equipment that operates on elevated tracks. They can fully utilize the space beneath the bridge to lift materials without being obstructed by ground equipment. As a result, they are widely used for lifting heavy objects in indoor and outdoor warehouses, factories, docks, and open storage yards.

[0003] When an overhead crane is lifting heavy cargo, or the cargo being lifted is dangerous (such as molten iron), there is a safety hazard if people are walking near the crane or crossing the area where the crane is operating. Currently, when an overhead crane is lifting heavy objects, to ensure the safe passage of people on the ground, a vertical ground safety passage is generally set up below the overhead crane operating area for people to pass through. To avoid the occurrence of safety hazards, the main methods currently used are to set up boundary fences around the overhead crane operating area and set up safety warning signs to alert people passing through.

[0004] Since the overhead crane operates at a high altitude and the operating environment of the overhead crane is relatively complex, the existing warning measures cannot provide good protection. Some people may still cross the driving area of ​​the overhead crane out of luck, which may cause a collision. Utility Model Content

[0005] In order to prevent the overhead crane from hitting passing workers during operation, the present application provides an overhead crane with a protection system.

[0006] This application provides an overhead crane with a protection system, which adopts the following technical solutions:

[0007] A crane with a protection system includes a crane body and a protection device arranged on the crane body, the crane body includes a pair of bases that are parallel to each other and slidably arranged on the ground, the length direction of the two bases is the same as the movement direction of the crane body, moving wheels are rotatably arranged on the bases and near the two ends, and a driving motor for driving the moving wheels to rotate is fixed on the bases, and a fixing frame for lifting heavy objects is fixed on the two bases; the protection device includes a laser scanning sensor and a controller arranged at both ends of the base, the controller is electrically connected to the laser scanning sensor, and the controller is electrically connected to the driving motor, and the laser scanning sensor can scan whether there is a pedestrian passing in the direction of the crane body's movement and transmit the signal to the controller in a timely manner.

[0008] By adopting the above technical solution, when the crane body is lifting heavy objects and moving, the laser scanning sensor installed at the end of the base can scan in real time whether there are obstacles in front of the crane body or whether pedestrians are passing through. When the laser scanning sensor detects an obstacle, it can return a signal in real time and transmit it to the controller, and then the controller controls the drive motor to cut off power, so that the crane body stops moving, avoiding the crane body from hitting the passing workers. The installed laser scanning sensor can respond quickly and the protection effect is better.

[0009] Optionally, an electric control box corresponding to the laser scanning sensor is provided on the base, the controller is provided in the electric control box, and an audible and visual alarm is provided outside the electric control box, and the controller and the audible and visual alarm are electrically connected.

[0010] By adopting the above technical solution, when the laser scanning sensor detects an obstacle or a person, the controller can first control the sound and light alarm to emit a rising sound and flashing lights to remind the crossing personnel to pay attention to the moving overhead crane body and let them move away quickly. If the personnel do not move away in time, the controller controls the drive motor to cut off the power, and then the overhead crane body stops moving.

[0011] Optionally, the protective device also includes an angle adjustment assembly arranged on the base, the angle adjustment assembly includes a worm wheel and a worm rotatably arranged on the base, the worm wheel and the worm are engaged with each other, the laser scanning sensor is arranged on the worm wheel, and a handle for convenient rotation is provided at the end of the worm.

[0012] By adopting the above technical solution, when the laser scanning sensor is used to monitor obstacles or walking workers, the worm wheel is driven to rotate by rotating the worm, so that the laser scanning sensor can rotate around the axis of the worm wheel, thereby changing the monitoring direction of the laser scanning sensor, making it easier to monitor obstacles on all sides of the overhead crane body and workers moving from all directions beyond the overhead crane body, and can better provide early warning to prevent the moving overhead crane body from colliding with workers.

[0013] Optionally, a rotating shaft is provided at the axis of the worm gear, the lower end of the rotating shaft is fixed to the base, the worm gear and the rotating shaft rotate relative to each other, a rectangular mounting block is fixed at the upper end of the rotating shaft, a mounting sleeve is fixed on the lower surface of the laser sensor, the mounting block is plugged into the mounting sleeve, and an angle fixing bolt is threaded on the mounting sleeve, the angle fixing bolt is passed through the mounting sleeve and tightened to the mounting block.

[0014] By adopting the above technical solution, the detachable fixing method of the laser scanning sensor and the worm gear can allow the laser scanning sensor to be quickly removed from and installed on the rotating shaft, and can allow staff to quickly remove the laser scanning sensor from the rotating shaft when the laser scanning sensor needs to be repaired.

[0015] Optionally, a protective shell is provided on the base, the worm wheel and worm are located inside the protective shell, one end of the worm passes through the protective shell and the upper end of the rotating shaft passes through the protective shell; a protective cover is fixed on the protective shell, and the protective cover is provided above the laser scanning sensor.

[0016] By adopting the above technical solution, the protective shell provided can protect the worm gear and worm, preventing objects from falling between the worm gear and worm gear, and preventing staff from touching the worm gear and worm gear; the protective cover provided on the laser scanning sensor can protect it and prevent heavy objects from damaging the equipment.

[0017] Optionally, the protective device further includes a horizontal adjustment component disposed on the base, the horizontal adjustment component includes a horizontal adjustment seat disposed on the base, and the protective shell slides on the horizontal adjustment seat to allow the laser scanning sensor to move along the length direction of the horizontal adjustment seat.

[0018] By adopting the above technical solution, the laser scanning sensor can be moved along the length direction of the horizontal adjustment seat, so that the position of the laser scanning sensor on the base can be adjusted, allowing the laser scanning sensor to scan different areas and thus monitor a larger range.

[0019] Optionally, a sliding seat is provided between the horizontal adjustment seat and the protective shell, the protective shell is fixed on the sliding seat, and a horizontal fixing bolt is threadedly connected to the sliding seat, and the horizontal fixing bolt passes through the sliding seat and is tightened to the horizontal adjustment seat.

[0020] By adopting the above technical solution, when the laser scanning sensor moves on the horizontal adjustment seat, the position of the laser scanning sensor can be fixed by the horizontal fixing bolt to prevent it from moving during the monitoring process and causing inaccurate monitoring results.

[0021] Optionally, the horizontal adjustment assembly also includes a rotating seat rotatably set on the base, the horizontal adjustment seat is slidably set on the rotating seat, and the rotating seat and the sliding seat can slide relative to each other, and a rotating fixing bolt is threaded on the rotating seat, and the rotating fixing bolt passes through the rotating seat and is tightened to the horizontal adjustment seat.

[0022] By adopting the above technical solution, when adjusting the position of the laser scanning sensor, the horizontal adjustment seat can be moved on the rotating seat first, and the laser scanning sensor can be moved on the horizontal adjustment seat, so that the laser scanning sensor can move a farther distance on the base, thereby monitoring a larger range. In addition, since the rotating seat and the base rotate in coordination, the laser scanning sensor can rotate circumferentially around the axis of the rotating seat to better scan the surroundings. After the laser scanning sensor is adjusted, its position is fixed by rotating the fixing bolt to avoid errors during the monitoring process.

[0023] Optionally, guide members are provided on both sides of the horizontal adjustment seat and at positions relative to the sliding seat and the rotating seat. The guide members include guide grooves provided on the side of the horizontal adjustment seat and in the same length direction as the horizontal adjustment seat. A guide block is fixed on the sliding seat or the rotating seat, and the guide block slides in the guide groove.

[0024] By adopting the above technical solution, when the horizontal adjustment seat and the sliding seat are in the sliding process, the cooperation between the guide block and the guide groove can make the horizontal adjustment seat and the sliding seat slide more stably.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The combination of laser scanning sensors and controllers can provide better protection for the overhead crane. When obstacles and pedestrians are detected, they can respond quickly and stop the overhead crane in time.

[0027] 2. The angle adjustment component allows the laser scanning sensor to rotate and monitor its surroundings, better monitoring obstacles or people passing through in all directions, and increasing the monitoring range;

[0028] 3. The horizontal adjustment component allows the laser scanning sensor to extend beyond the base, thereby further expanding the monitored area. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0030] Figure 2 This is a schematic diagram of the installation position of the protection device according to an embodiment of the present application.

[0031] Figure 3 This is a schematic diagram of a guide member according to an embodiment of the present application.

[0032] Figure 4 This is a schematic diagram of the angle adjustment component in the embodiment of the present application. Figure 1 .

[0033] Figure 5 This is a schematic diagram of the angle adjustment component in the embodiment of the present application. Figure 2 .

[0034] Explanation of the accompanying reference numerals: 1. Overhead crane body; 11. Base; 12. Drive motor; 13. Protective shell; 14. Protective cover; 2. Protective device; 21. Laser scanning sensor; 22. Electric control box; 23. Sound and light alarm; 24. Angle adjustment assembly; 241. Worm gear; 242. Worm; 243. Rotating shaft; 244. Mounting block; 245. Mounting sleeve; 246. Angle fixing bolt; 25. Horizontal adjustment assembly; 251. Horizontal adjustment seat; 252. Sliding seat; 253. Horizontal fixing bolt; 254. Rotating seat; 255. Rotating fixing bolt; 26. Guide member; 261. Guide groove; 262. Guide block. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-5 This application is described in further detail.

[0036] The embodiment of the present application discloses an overhead crane with a protection system.

[0037] Reference Figure 1 A crane with a protection system includes a crane body 1 that slides horizontally in a working area. The crane body 1 includes a pair of bases 11 that are parallel to each other. The length direction of the two bases 11 is the same as the moving direction of the crane body 1. Fixed frames for lifting heavy objects are fixed on the two bases 11. Moving wheels are rotatably provided at positions near both ends of the bases 11, and guide rails with the same length direction as the bases 11 are provided below the bases 11. The moving wheels are rotatably provided on the guide rails. A drive motor 12 is fixed at the position of the moving wheels on the base 11. The output shaft of the drive motor 12 is fixed to the moving wheels. When the crane body 1 moves, the drive motor 12 is started to drive the moving wheels to rotate on the guide rails, thereby controlling the crane body 1 to move along the direction of the guide rails.

[0038] Reference Figure 1 and Figure 2, protective devices 2 for protecting staff are provided at positions near both ends of the base 11. The protective devices 2 include laser scanning sensors 21 installed near both ends of the base 11 and an electric control box 22 fixed on the base 11 and corresponding to the laser sensors. A controller is provided inside the electric control box 22, and an audible and visual alarm 23 for warning is fixed outside the electric control box 22. The controller is electrically connected to the laser scanning sensor 21, the drive motor 12 and the audible and visual alarm 23 respectively. After the laser scanning sensor 21 is powered on, it can scan whether there is an obstacle in front. When an obstacle or a staff member is detected, it will reflect the signal and transmit the reflected signal to the controller. The controller then controls the drive motor 12 to stop, so that the overhead crane body 1 can stop in time. Through the cooperation of the laser scanning sensor 21 and the controller, it can respond in time and stop the running overhead crane body 1 in a short time.

[0039] Reference Figure 2 and Figure 3 The protection device 2 also includes a horizontal adjustment component 25 for controlling the movement of the laser scanning sensor 21 in the horizontal direction and an angle adjustment component 24 for controlling the laser scanning sensor 21 to rotate around itself. The angle adjustment component 24 is arranged on the horizontal adjustment component 25, and the laser scanning sensor 21 is installed on the angle adjustment component 24; the horizontal adjustment component 25 includes a circular rotating seat 254 that is rotatably arranged on the upper surface of the base 11, and a rotating shaft is fixed on the lower surface of the rotating seat 254, and the rotating shaft is plugged into the base 11. The rotating shaft and the base 11 are in the form of interference fit. When the staff applies external force to drive the rotating seat 254 to rotate, the rotating seat 254 rotates, and it will not rotate freely. A through opening is provided on the rotating seat 254. A horizontal adjustment seat 251 is provided at the opening of the rotating seat 254, and the length direction of the horizontal adjustment seat 251 is the same as the diameter direction of the rotating seat 254. The horizontal adjustment seat 251 and the rotating seat 254 are slidingly arranged to allow the horizontal adjustment seat 251 to move horizontally at the opening of the rotating seat 254. A rotating fixing bolt 255 is threadedly connected to the side wall of the rotating seat 254. The rotating fixing bolt 255 passes through the rotating seat 254 and is tightened to the horizontal adjustment seat 251. After adjusting the position of the horizontal adjustment seat 251, tighten the rotating fixing bolt 255 to fix the position of the horizontal adjustment seat 251 on the rotating seat 254, preventing the horizontal adjustment seat 251 from moving freely and preventing the horizontal adjustment seat 251 from detaching from the rotating seat 254.

[0040] A sliding seat 252 that slides along its length direction is provided on the upper surface of the horizontal adjustment seat 251. The sliding seat 252 is a circular structure, and an opening is provided on the lower surface of the sliding seat 252. The horizontal adjustment seat 251 can also be snapped into the opening of the sliding seat 252, so that the sliding seat 252 can slide more smoothly along the horizontal adjustment seat 251. A horizontal fixing bolt 253 is threadedly connected to the side wall of the sliding seat 252. The horizontal fixing bolt 253 passes through the sliding seat 252 and is tightened to the horizontal adjustment seat 251. When the sliding seat 252 has completed sliding on the horizontal adjustment seat 251, it is tightened and fixed by the horizontal fixing bolt 253, so that the position of the laser scanning sensor 21 is fixed.

[0041] Reference Figure 2 and Figure 3 Two groups of guide members 26 are provided on the horizontal adjustment seat 251, and the two groups of guide members 26 correspond to the rotating seat 254 and the sliding seat 252 respectively. The guide members 26 include guide grooves 261 symmetrically arranged on both sides of the horizontal adjustment seat 251. The length direction of the guide grooves 261 is the same as the length direction of the horizontal adjustment seat 251. A pair of guide blocks 262 are symmetrically provided on both sides of the opening of the sliding seat 252 or on both sides of the opening of the rotating seat 254, and the two guide blocks 262 are slidably fitted in the corresponding guide grooves 261. When the horizontal adjustment seat 251 and the sliding seat 252 are in the sliding process, the cooperation between the guide blocks 262 and the guide grooves 261 can make the sliding of the horizontal adjustment seat 251 and the sliding seat 252 more stable.

[0042] Reference Figure 4 and Figure 5A protective shell 13 is fixed on the sliding seat 252. The protective shell 13 is a hollow structure. The angle adjustment assembly 24 includes a worm gear 241 and a worm 242 rotatably arranged inside the protective shell 13. One end of the worm 242 passes through the protective shell 13, and a handle is fixed to the end that passes through the protruding end for convenient rotation of the worm 242. A rotating shaft 243 is fixed at the axis of the worm gear 241. Both ends of the rotating shaft 243 rotate with the protective shell 13, and the upper end of the rotating shaft 243 extends out of the protective shell 13. The protective shell 13 can protect the worm gear 241 and the worm 242. A vertical mounting block 244 is fixed to the end of the rotating shaft 243 extending out of the protective shell 13. The cross section of the mounting block 244 is rectangular. A vertical mounting sleeve 245 is fixed to the lower surface of the laser scanning sensor 21. The mounting block 244 can be plugged into the mounting sleeve 245 to facilitate the installation and fixation of the laser scanning sensor 21 on the rotating shaft 243. An angle fixing bolt 246 is threadedly connected to the mounting sleeve 245. The angle fixing bolt 246 passes through the mounting sleeve 245 and is tightened to the mounting block 244, firmly fixing the laser scanning sensor 21 on the worm gear 241 so that it can rotate with the worm gear 241, and the mounting sleeve 245 and the mounting block 245 are provided. 44 can easily remove the laser sensor from the worm gear 241 for inspection and maintenance; when the laser scanning sensor 21 is in use, in order to change the area it scans, the staff drives the worm gear 241 to rotate by turning the worm 242, thereby controlling the rotation of the laser scanning sensor 21, allowing it to scan more areas. After the worm 242 controls the worm gear 241 to rotate, it can achieve self-locking, preventing the laser scanning sensor 21 from reversing under the action of external forces; in the embodiment of the present application, the handle can be replaced with a servo motor or other driving device according to actual needs, so that the laser scanning sensor 21 can be automatically rotated, thereby scanning the surroundings and expanding the detection area. A protective cover 14 is fixed to the protective shell 13, and the protective cover 14 can be set above the laser scanning sensor 21 to prevent other objects from damaging the laser scanning sensor 21.

[0043] The implementation principle of an overhead crane with a protection system in an embodiment of the present application is as follows: when the overhead crane body 1 is lifting heavy objects and moving horizontally, the laser scanning sensor 21 can scan the area in front of it, and when an obstacle is detected, it can transmit a signal to the controller, and the controller controls the drive motor 12 to cut off power, so that the overhead crane body 1 can stop in time to prevent it from hitting obstacles or staff; during use, in order to adjust the scanning area of ​​the laser scanning sensor 21, the horizontal adjustment component 25 can be used to move in the horizontal direction to change the scanning area, and the angle adjustment component 24 can be used to change the scanning direction of the laser scanning sensor 21, so that the scanning range of the laser scanning sensor 21 is wider, allowing it to monitor a larger range.

[0044] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An overhead crane with a protection system, characterized by: The invention comprises a crane body (1) and a protective device (2) arranged on the crane body (1), wherein the crane body (1) comprises a pair of bases (11) which are parallel to each other and slidably arranged on the ground, the length direction of the two bases (11) being the same as the moving direction of the crane body (1), movable wheels are rotatably arranged on the bases (11) and near the two ends, and a driving motor (12) for driving the movable wheels to rotate is fixed on the bases (11), and fixed frames for lifting heavy objects are fixed on the two bases (11); the protective device (2) comprises a laser scanning sensor (21) and a controller arranged at both ends of the base (11), the controller and the laser scanning sensor (21) are electrically connected, and the controller and the driving motor (12) are electrically connected, and the laser scanning sensor (21) can scan whether there are pedestrians passing in the running direction of the crane body (1) and transmit signals to the controller in a timely manner.

2. The overhead crane with a protection system according to claim 1, characterized in that: An electric control box (22) corresponding to the laser scanning sensor (21) is provided on the base (11), the controller is provided in the electric control box (22), and an audible and visual alarm (23) is provided outside the electric control box (22), and the controller and the audible and visual alarm (23) are electrically connected.

3. The overhead crane with a protection system according to claim 1, characterized in that: The protective device (2) further comprises an angle adjustment assembly (24) arranged on the base (11), the angle adjustment assembly (24) comprising a worm wheel (241) and a worm (242) rotatably arranged on the base (11), the worm wheel (241) and the worm (242) being engaged with each other, the laser scanning sensor (21) being arranged on the worm wheel (241), and a handle for convenient rotation being arranged at the end of the worm (242).

4. The overhead crane with a protection system according to claim 3, characterized in that: A rotating shaft (243) is provided at the axis of the worm gear (241), the lower end of the rotating shaft (243) is fixed to the base (11), the worm gear (241) and the rotating shaft (243) rotate relative to each other, a rectangular mounting block (244) is fixed at the upper end of the rotating shaft (243), a mounting sleeve (245) is fixed on the lower surface of the laser sensor, the mounting block (244) is plugged into the mounting sleeve (245), and an angle fixing bolt (246) is threadedly connected to the mounting sleeve (245), and the angle fixing bolt (246) is passed through the mounting sleeve (245) and pressed against the mounting block (244).

5. The overhead crane with a protection system according to claim 3, characterized in that: A protective shell (13) is provided on the base (11); the worm wheel (241) and the worm (242) are located inside the protective shell (13); one end of the worm (242) passes through the protective shell (13); and the upper end of the rotating shaft (243) passes through the protective shell (13); a protective cover (14) is fixed on the protective shell (13); and the protective cover (14) is provided above the laser scanning sensor (21).

6. The overhead crane with a protection system according to claim 5, characterized in that: The protective device (2) further comprises a horizontal adjustment assembly (25) arranged on the base (11), the horizontal adjustment assembly (25) comprising a horizontal adjustment seat (251) arranged on the base (11), the protective shell (13) being slidably fitted on the horizontal adjustment seat (251), allowing the laser scanning sensor (21) to move along the length direction of the horizontal adjustment seat (251).

7. The overhead crane with a protection system according to claim 6, characterized in that: A sliding seat (252) is provided between the horizontal adjustment seat (251) and the protective shell (13), the protective shell (13) is fixed on the sliding seat (252), and a horizontal fixing bolt (253) is threadedly connected to the sliding seat (252), and the horizontal fixing bolt (253) passes through the sliding seat (252) and is tightened to the horizontal adjustment seat (251).

8. The overhead crane with a protection system according to claim 6, characterized in that: The horizontal adjustment assembly (25) further comprises a rotating seat (254) rotatably arranged on the base (11); the horizontal adjustment seat (251) is slidably arranged on the rotating seat (254); and the rotating seat (254) and the sliding seat (252) are capable of sliding relative to each other; a rotating fixing bolt (255) is threadedly connected to the rotating seat (254); the rotating fixing bolt (255) passes through the rotating seat (254) and is tightened against the horizontal adjustment seat (251).

9. The overhead crane with a protection system according to claim 6, characterized in that: Guide members (26) are provided on both sides of the horizontal adjustment seat (251) and at positions relative to the sliding seat (252) and the rotating seat (254). The guide members (26) include guide grooves (261) provided on the side of the horizontal adjustment seat (251) and having the same length direction as the horizontal adjustment seat (251). A guide block (262) is fixed on the sliding seat (252) or the rotating seat (254), and the guide block (262) is slidably fitted in the guide grooves (261).

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