A self-correcting device for the travel of a bridge crane trolley

Abstract

This utility model discloses a self-correcting device for the movement of a bridge crane trolley, comprising two end beams, with two main beams positioned between the tops of the two end beams. A track is mounted on the main beams, and a crane trolley runs on the track. The crane trolley includes a trolley traveling mechanism, a trolley frame, and a drum mechanism. Correcting mechanisms are provided at both the front and rear ends of the trolley frame. Each correcting mechanism includes a mounting frame with a detection device. A hydraulic cylinder is mounted on the top of the detection frame, and a correcting frame is mounted at the end of the hydraulic cylinder. A correcting wheel is rotatably connected to the correcting frame. The detection device can detect whether the crane trolley's movement has deviated. When deviation occurs, the hydraulic cylinder drives the correcting frame to move, causing the correcting wheel to engage with the main beam, pushing the trolley frame in the opposite direction to return the crane trolley to its correct position.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, and in particular to a self-correcting device for the trolley travel of a bridge crane. Background Technology

[0002] Bridge cranes are lifting equipment that spans across workshops, warehouses, and material yards for material handling. Because their ends rest on tall concrete pillars or metal supports, resembling a bridge, the bridge frame of a bridge crane runs longitudinally along tracks laid on elevated supports on both sides. This allows for full utilization of the space beneath the bridge frame for material handling, without being obstructed by ground equipment, making it the most widely used and numerous type of lifting machinery. During operation, the crane trolley may experience asynchronous movement on both sides due to various reasons, causing the trolley to tilt. This leads to accelerated wear of the trolley's traveling wheels, rail wear, and other problems, affecting the safety of industrial production. Existing correction devices mostly use guide wheels, which have low correction efficiency and poor accuracy. Utility Model Content

[0003] The purpose of this invention is to provide a self-correcting device for the movement of a bridge crane trolley. The detection device can detect whether the movement of the crane trolley is off-center. When an off-center movement occurs, the hydraulic cylinder drives the correction frame to move, so that the correction wheel is in contact with the main beam, and pushes the trolley frame in the opposite direction to straighten the crane trolley.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a self-correcting device for the travel of a bridge crane trolley, comprising two end beams, two main beams disposed between the tops of the two end beams, a track disposed on the main beams, and a crane trolley running on the track. The crane trolley includes a trolley traveling mechanism, a trolley frame, and a drum mechanism. The trolley frame is disposed between the trolley traveling mechanisms, and the drum mechanism is disposed on the trolley frame. Correcting mechanisms are disposed at both the front and rear ends of the trolley frame. The correcting mechanism includes a mounting frame, with a mounting hole on the side of the mounting frame near the main beam. A detection device is disposed in the mounting hole, and the detection device includes a detection frame slidably connected in the mounting hole. A pressure sensor is installed at the bottom of the mounting hole, and a detection spring is disposed between the pressure sensor and the detection frame. A guide wheel is rotatably connected to the outer side of the detection frame, and the guide wheel rolls along the inner side of the main beam. A hydraulic cylinder is disposed at the top of the detection frame, and a correcting frame is disposed at the end of the hydraulic cylinder. A correcting wheel is rotatably connected to the correcting frame.

[0005] Optionally, four correction mechanisms are provided, which are respectively located on both sides of the front end and both sides of the rear end of the trolley frame.

[0006] Optionally, a groove is provided on the inner side of the main beam, and the correction frame is slidably connected in the groove. The correction frame is equipped with two sets of correction wheels, which are located on the inner and outer sides of the groove, respectively.

[0007] Optionally, a connecting frame is fixedly connected between the mounting frame and the trolley frame. The connecting frame and the mounting frame are fixedly connected by bolts. The connecting frame has an adjustment hole, and the bolt passes through the adjustment hole to be fixedly connected to the trolley frame.

[0008] Optionally, the height of the correction mechanism is higher than the height of the end beam.

[0009] The self-correcting device for the trolley travel of this bridge crane has the following advantages:

[0010] (1) The detection device can determine whether the movement of the crane trolley is deviated by detecting the pressure applied by the spring to the pressure sensor. When the pressure value of the pressure sensor is uniform and stable, the crane trolley is running normally. When the pressure detected by the pressure sensor gradually increases, the crane trolley is deviated. At this time, the hydraulic cylinder drives the correction frame to move, so that the correction wheel is in contact with the main beam and pushes the trolley frame in the opposite direction to make the crane trolley return to the correct position. If the value detected by the pressure sensor is still increasing, the trolley traveling mechanism is immediately braked to avoid an accident.

[0011] (2) The four correction mechanisms work together in pairs to more accurately determine whether the crane trolley has deviated.

[0012] (3) The two sets of correction wheels can correct the trolley from both pushing and pulling directions, thus improving the correction efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a structural diagram of the connecting frame.

[0015] Figure 3 This is a schematic diagram of the detection device.

[0016] Figure 4 This is a schematic diagram of the alignment wheel arrangement. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] like Figures 1-4As shown, a self-correcting device for the trolley travel of a bridge crane includes two end beams 1, with two main beams 2 positioned between the tops of the two end beams 1. A track 3 is mounted on the main beams 2, and a crane trolley 4 runs on the track 3. The crane trolley 4 includes a trolley traveling mechanism 5, a trolley frame 6, and a drum mechanism 7. The trolley frame 6 is positioned between the trolley traveling mechanisms 5, and the drum mechanism 7 is mounted on the trolley frame 6. Correcting mechanisms 8 are provided on both sides of the front end and both sides of the rear end of the trolley frame 6. The height of the correcting mechanisms 8 is higher than the height of the end beams 1 to prevent the crane trolley 4 from colliding with the end beams 1 during movement.

[0019] The alignment correction mechanism 8 includes a mounting frame 9. A connecting frame 10 is fixedly connected between the mounting frame 9 and the trolley frame 6. The connecting frame 10 and the mounting frame 9 are fixedly connected by bolts 12. The connecting frame 10 has an adjustment hole 11, and the trolley frame 6 has a threaded hole that matches the adjustment hole 11. The bolts 12 pass through the adjustment hole 11 and connect with the threaded hole on the trolley frame 6 to fix the mounting frame 9. By adjusting the mating position of the adjustment hole 11 and the threaded hole, the distance between the mounting frame 9 and the main beam 2 can be adjusted, thereby adjusting the installation position of the alignment correction mechanism 8.

[0020] A mounting hole 13 is provided on the side of the fixed connection mounting bracket 9 near the main beam 2. A detection device is installed in the mounting hole 13, including a detection frame 14. The detection frame 14 is slidably connected in the mounting hole 13. A pressure sensor 15 is installed at the bottom of the mounting hole 13. A detection spring 16 is provided between the pressure sensor 15 and the detection frame 14. A guide wheel 17 is rotatably connected to the outer side of the detection frame 14. The guide wheel 17 rolls along the inner side of the main beam 2. A hydraulic cylinder 18 is provided at the top of the detection frame 14. A correction frame 19 is provided at the end of the hydraulic cylinder 18. A slide groove 20 is provided on the inner side of the main beam 2. The correction frame 19 is slidably connected in the slide groove 20. Two sets of correction wheels 21 are rotatably connected to the correction frame 19. The two sets of correction wheels 21 are located on the inner and outer sides of the slide groove 20, respectively.

[0021] Under the action of the detection spring 16, the guide wheel 17 can roll along the inner side of the main beam 2. The detection spring 16 is in a compressed state, applying pressure to the pressure sensor 15. When the crane trolley 4 is running normally and there is no deviation, the pressure values ​​measured by the four pressure sensors 15 are uniform and stable. When the crane trolley 4 deviates, the pressure values ​​measured by the pressure sensors 15 will show differences. The hydraulic cylinder 18 located at the position where the pressure value gradually increases extends outward, so that the outer correction wheel 21 is in contact with the outer side of the main beam 2. The hydraulic cylinder 18 located at the position where the pressure value gradually decreases retracts inward, so that the inner correction wheel 21 is in contact with the inner side of the main beam 2. The four positions simultaneously push the trolley frame 6 in opposite directions, so that the crane trolley 4 returns to the correct position. If the value of the pressure sensor 15 continues to change when the correction device is running, the trolley traveling mechanism 5 is immediately braked to prevent the crane trolley 4 from continuing to move and causing an accident.

[0022] 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 self-correcting device for the movement of a bridge crane trolley, comprising two end beams, two main beams disposed between the tops of the two end beams, a track disposed on the main beams, and a crane trolley running on the track, characterized in that: The crane trolley includes a trolley traveling mechanism, a trolley frame, and a drum mechanism. The trolley frame is positioned between the trolley traveling mechanisms, and the drum mechanism is mounted on the trolley frame. Correction mechanisms are installed at both the front and rear ends of the trolley frame. Each correction mechanism includes a mounting frame with a mounting hole on the side closest to the main beam. A detection device is installed within the mounting hole, and the detection device includes a detection frame slidably connected to the mounting hole. A pressure sensor is installed at the bottom of the mounting hole, and a detection spring is installed between the pressure sensor and the detection frame. A guide wheel is rotatably connected to the outer side of the detection frame, and the guide wheel rolls along the inner side of the main beam. A hydraulic cylinder is installed at the top of the detection frame, and a correction frame is installed at the end of the hydraulic cylinder. A correction wheel is rotatably connected to the correction frame.

2. The self-correcting device for the trolley travel of a bridge crane as described in claim 1, characterized in that: There are four correction mechanisms, which are located on both sides of the front end and both sides of the rear end of the trolley frame.

3. The self-correcting device for the trolley travel of a bridge crane as described in claim 1 or 2, characterized in that: The inner side of the main beam is provided with a sliding groove, and the correction frame is slidably connected in the sliding groove. The correction frame is equipped with two sets of correction wheels, which are located on the inner and outer sides of the sliding groove, respectively.

4. The self-correcting device for the trolley travel of a bridge crane as described in claim 1, characterized in that: A connecting bracket is fixedly connected between the mounting bracket and the trolley frame. The connecting bracket and the mounting bracket are fixedly connected by bolts. The connecting bracket has adjustment holes, and the bolts pass through the adjustment holes to be fixedly connected to the trolley frame.

5. The self-correcting device for the trolley travel of a bridge crane as described in claim 1, characterized in that: The height of the correction mechanism is higher than the height of the end beam.

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