Anti-collision device for gantry crane

Abstract

The utility model discloses an anti-collision device for a gantry crane, and relates to the technical field of loading and unloading machinery. Comprising a copper plate arranged at the bottom of a cross beam; the mounting plate is arranged on the pulley and is rotationally connected with the pulley, and the mounting plate is opposite to the copper plate; the hydraulic cylinder is vertically arranged on the mounting plate, the fixed end of the hydraulic cylinder is fixedly connected with the mounting plate, and the output end of the hydraulic cylinder is provided with an array plate; the permanent magnet array is arranged on the array plate, and the permanent magnet array is composed of a plurality of permanent magnets; and the position sensor is arranged on the pulley and is used for measuring the distance between the pulley and the supporting leg. The speed of the pulley can be automatically reduced when the pulley of the gantry crane is close to the terminal of the sliding rail, the pulley is prevented from colliding with the terminal of the sliding rail, and the safety of the gantry crane in use is improved.

Description

A gantry crane anti-collision device Technical Field

[0001] This utility model relates to the field of loading and unloading machinery technology, and in particular to a gantry crane anti-collision device. Background Technology

[0002] Gantry cranes generally refer to portal cranes, or bridge cranes, and are commonly used lifting equipment in places such as docks and large warehouses.

[0003] During gantry crane operation, operators often need to visually assess the work environment and space to make judgments before commencing operations. Because operators sometimes need to operate from a distance from the gantry crane, and visual errors can occur during operation, affecting their judgment of the pulley and rail end positions, this can lead to collisions between the pulleys and rail ends. This impact can cause the gantry crane to be subjected to shocks, potentially resulting in the suspended load falling from a height or the lifting equipment derailing, seriously endangering personal safety. Summary of the Invention

[0004] The main purpose of this utility model is to provide a gantry crane anti-collision device to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model provides a gantry crane anti-collision device, comprising:

[0006] A copper plate, which is disposed at the bottom of the crossbeam;

[0007] Mounting plate, which is mounted on and rotatably connected to pulley, and is opposite to copper plate;

[0008] A hydraulic cylinder is vertically mounted on the mounting plate, with its fixed end fixedly connected to the mounting plate, and its output end equipped with an array plate.

[0009] A permanent magnet array, wherein the permanent magnet array is disposed on the array plate, and the permanent magnet array is composed of multiple permanent magnets;

[0010] A position sensor is mounted on the pulley and is used to measure the distance between the pulley and the outrigger.

[0011] Furthermore, the copper plate is evenly distributed with multiple insulating partitions, which divide the copper plate into multiple segments, and the width of the copper plate is greater than the width of the permanent magnet array.

[0012] Furthermore, the permanent magnets are spaced apart and arranged in a Heilbeck array, with an electromagnetic coil between each pair of permanent magnets, the electromagnetic coil being used to enhance or weaken the magnetic field.

[0013] Furthermore, the copper plate is electrically connected to a rectifier, the rectifier is electrically connected to a supercapacitor, and the supercapacitor is electrically connected to the electromagnetic coil.

[0014] Furthermore, an insulating pad is provided between the electromagnetic coil and the permanent magnet.

[0015] Furthermore, a cooling pipe is provided on the top of the copper plate, the cooling pipe is connected to a water tank, a water pump is provided in the water tank, and heat dissipation fins are provided on the array plate.

[0016] Furthermore, the copper plate has multiple expansion joints evenly distributed, and the expansion joints are filled with conductive silver paste.

[0017] Furthermore, it also includes a buffer device, which comprises: a fixed frame, the fixed frame being mounted on the support leg, a buffer layer and a collision plate being sequentially arranged on the fixed frame toward the pulley; a damping sleeve being horizontally arranged on the collision plate, a strike rod being slidably and sealingly connected to the damping sleeve, the strike rod being coaxial with the damping sleeve, damping oil being disposed inside the damping sleeve, a first strike block being disposed at the end of the strike rod away from the damping sleeve, and a second strike block being disposed on the mounting plate opposite to the first strike block.

[0018] This utility model has the following beneficial effects:

[0019] This invention can automatically reduce the speed of the pulley when it approaches the end of the slide rail, preventing the pulley from colliding with the end of the slide rail and improving the safety of the gantry crane during use. Attached Figure Description

[0020] Figure 1 is a schematic diagram of an embodiment of the anti-collision device for a gantry crane according to the present invention;

[0021] Figure 2 is a schematic diagram of another embodiment of the anti-collision device for gantry cranes according to this utility model.

[0022] In the diagram: 1-Crossbeam; 2-Support leg; 3-Pulley; 4-Copper plate; 5-Mounting plate; 6-Hydraulic cylinder; 7-Array plate; 8-Permanent magnet array; 9-Insulating partition; 10-Fixing frame; 11-Buffer layer; 12-Collision plate; 13-Damping sleeve; 14-Collision rod; 15-First collision block; 16-Second collision block. Detailed Implementation

[0023] To achieve the above objectives and effects, the technical means and structure adopted by this utility model are described in detail with reference to the accompanying drawings, focusing on the features and functions of the preferred embodiments of this utility model.

[0024] As shown in Figures 1 and 2, this utility model provides a gantry crane anti-collision device, including:

[0025] Copper plate 4 is set at the bottom of crossbeam 1, close to both ends of crossbeam 1 and arranged along the length of crossbeam 1.

[0026] Mounting plate 5 is mounted on pulley 3 and fixedly connected to pulley frame of pulley 3. Mounting plate 5 is opposite to copper plate 4.

[0027] Hydraulic cylinder 6 is vertically mounted on mounting plate 5. The fixed end of hydraulic cylinder 6 is fixedly connected to mounting plate 5. The output end of hydraulic cylinder 6 is provided with array plate 7. Multiple hydraulic cylinders 6 can be set to improve stability.

[0028] The permanent magnet array 8 is set on the array plate 7 and consists of multiple permanent magnets.

[0029] A position sensor is installed on the pulley 3. The position sensor is used to measure the distance between the pulley 3 and the support leg 2. Specifically, a laser rangefinder can be used as the position sensor.

[0030] Specifically, a groove can be set at the bottom of the crossbeam 1, and the copper plate 4 can be placed in the groove. The mounting plate 5 can be set according to the actual situation of the gantry crane pulley frame. The pulley frame is a rigid structure that is rotatably connected to the two ends of the pulley 3. When the pulley frame is large and the distance between the pulleys 3 at both ends of the width direction of the crossbeam 1 is far, the mounting plate 5 can be set between the two pulleys 3. When the pulley frame is small, the mounting plate 5 can be set on both sides of the pulley frame.

[0031] Specifically, both the hydraulic cylinder 6 and the position sensor are connected to a PLC controller, which controls them automatically.

[0032] As pulley 3 moves closer to the end of crossbeam 1, position sensor detects the proximity to support leg 2 and sends a signal to PLC controller. PLC controller controls hydraulic cylinder 6 to extend, bringing permanent magnet array 8 on array plate 7 closer to copper plate 4. As pulley 3 continues to move, copper plate 4 moves relative to permanent magnet array 8. Copper plate 4 cuts magnetic field lines, forming eddy currents inside. Eddy currents generate magnetic fields in the opposite direction to permanent magnet array 8, forming a braking force that hinders the movement of permanent magnet array 8, reducing the speed of pulley 3 until it stops, preventing pulley 3 from colliding with the end of slide rail.

[0033] In this embodiment, multiple insulating partitions 9 are evenly distributed on the copper plate 4, which divide the copper plate 4 into multiple segments. The width of the copper plate 4 is greater than the width of the permanent magnet array 8, thereby blocking the transverse eddy current and reducing power consumption.

[0034] Specifically, ceramic fiberboard can be used for insulating partition 9.

[0035] In this embodiment, multiple permanent magnets are spaced apart and arranged in a Heilbeck array, with an electromagnetic coil between every two permanent magnets. The electromagnetic coil is used to enhance or weaken the magnetic field.

[0036] Specifically, an insulating pad is placed between the electromagnetic coil and the permanent magnet.

[0037] The Hellbeck array arrangement can enhance the magnetic field formed by the permanent magnet array 8 in a unit direction, strengthening the magnetic field of the permanent magnet array 8 near the copper plate 4, thus improving the braking effect. By energizing the electromagnetic coil, the electromagnetic coil generates a magnetic field in the same direction as the permanent magnet array 8, enhancing the overall magnetic field strength and improving the braking effect. When the pulley 3 needs to approach the end of the slide rail, the electromagnetic coil can also generate a magnetic field in the opposite direction to the permanent magnet array 8, weakening the overall magnetic field strength and reducing the braking effect, allowing the pulley 3 to slowly approach the end of the slide rail, achieving precise control of the pulley 3.

[0038] In this embodiment, the copper plate 4 is electrically connected to a rectifier, the rectifier is electrically connected to a supercapacitor, and the supercapacitor is electrically connected to an electromagnetic coil.

[0039] The supercapacitor can provide current to the electromagnetic coil, enabling the electromagnetic coil to work. At the same time, the reverse eddy current generated in the copper plate 4 can also be rectified and stored in the supercapacitor to recover the generated electrical energy.

[0040] In this embodiment, a cooling pipe is provided on the top of the copper plate 4, and a water tank is connected to each end of the cooling pipe. A water pump is provided in the water tank, and the water pump can be electrically connected to the supercapacitor, so that the coolant is pumped to the cooling pipe through the water tank to absorb the heat generated by the copper plate 4 during operation and to prevent the copper plate 4 from overheating and affecting normal operation.

[0041] Correspondingly, heat dissipation fins are provided on the array plate 7. The heat dissipation fins are used to reduce the temperature of the permanent magnet array 8, preventing the permanent magnet array 8 from overheating and affecting normal operation.

[0042] In this embodiment, multiple expansion joints are evenly distributed on the copper plate 4, and the expansion joints are filled with conductive silver paste. This is to prevent the copper plate 4 from breaking due to temperature changes.

[0043] In another embodiment, a buffer device is also included, comprising: a fixed frame 10, which is mounted on the support leg 2, and a buffer layer 11 and a collision plate 12 are sequentially arranged on the fixed frame 10 facing the pulley 3; a damping sleeve 13 is horizontally arranged on the collision plate 12, and a strike rod 14 is slidably and sealedly connected to the damping sleeve 13, the strike rod 14 is coaxial with the damping sleeve 13, damping oil is provided inside the damping sleeve 13, a first strike block 15 is provided at the end of the strike rod 14 away from the damping sleeve 13, and a second strike block 16 opposite to the first strike block 15 is provided on the mounting plate 5.

[0044] When the speed of pulley 3 is too fast, causing copper plate 4 and permanent magnet array 8 to be unable to fully brake pulley 3, the second impact block 16 will collide with the first impact block 15 and push the impact rod 14 on the first impact block 15 to move towards the impact plate 12. When the impact rod 14 moves, the damping oil in the damping sleeve 13 will hinder the movement of the impact rod 14 and reduce the speed of the impact rod 14. When the impact rod 14 collides with the impact plate 12, the impact plate 12 will transfer the force of the impact rod 14 to the buffer layer 11. The buffer layer 11 will deform to absorb the collision force, stop the pulley 3 from moving and reduce the reaction force on the pulley 3, so as to avoid a large impact force and potential safety hazards.

[0045] Specifically, multiple springs are provided between the fixing frame 10 and the first impact block 15 to absorb the impact force and reset the first impact block 15 after the pulley 3 is removed.

[0046] The above description is only a preferred embodiment of the present utility model and not all embodiments. Anyone should know that structural changes made under the guidance of the present utility model are protected by the present utility model. All technical solutions that are the same as or similar to the present utility model are within the scope of protection of the present utility model.

Claims

1. A gantry crane anti-collision device, characterized in that, include: A copper plate (4) is disposed at the bottom of the crossbeam (1); a mounting plate (5) is disposed on the pulley (3) and rotatably connected to the pulley (3), the mounting plate (5) being opposite to the copper plate (4); a hydraulic cylinder (6) is vertically disposed on the mounting plate (5), the fixed end of the hydraulic cylinder (6) is fixedly connected to the mounting plate (5), and the output end of the hydraulic cylinder (6) is provided with an array plate (7); a permanent magnet array (8) is disposed on the array plate (7), the permanent magnet array (8) being composed of multiple permanent magnets; a position sensor is disposed on the pulley (3), the position sensor being used to measure the distance between the pulley (3) and the outrigger (2).

2. The anti-collision device for a gantry crane as described in claim 1, characterized in that, The copper plate (4) is evenly distributed with multiple insulating partitions (9), which divide the copper plate (4) into multiple segments. The width of the copper plate (4) is greater than the width of the permanent magnet array (8).

3. The anti-collision device for a gantry crane as described in claim 1, characterized in that, Multiple permanent magnets are spaced apart and arranged in a Heilbeck array, with an electromagnetic coil between each pair of permanent magnets. The electromagnetic coil is used to enhance or weaken the magnetic field.

4. The anti-collision device for a gantry crane as described in claim 3, characterized in that, The copper plate (4) is electrically connected to a rectifier, the rectifier is electrically connected to a supercapacitor, and the supercapacitor is electrically connected to the electromagnetic coil.

5. A gantry crane anti-collision device as described in claim 4, characterized in that, An insulating pad is provided between the electromagnetic coil and the permanent magnet.

6. The anti-collision device for a gantry crane as described in claim 1, characterized in that, The top of the copper plate (4) is provided with a cooling pipe, which is connected to a water tank. A water pump is provided in the water tank, and heat dissipation fins are provided on the array plate (7).

7. The anti-collision device for a gantry crane as described in claim 1, characterized in that, Multiple expansion joints are evenly distributed on the copper plate (4), and the expansion joints are filled with conductive silver paste.

8. The anti-collision device for a gantry crane as described in claim 1, characterized in that, It also includes a buffer device, which includes: a fixed frame (10) which is mounted on the support leg (2). The fixed frame (10) is provided with a buffer layer (11) and a collision plate (12) in sequence facing the pulley (3). A damping sleeve (13) is horizontally mounted on the collision plate (12). A strike rod (14) is slidably and sealedly connected to the damping sleeve (13). The strike rod (14) is coaxial with the damping sleeve (13). Damping oil is provided inside the damping sleeve (13). A first strike block (15) is provided at the end of the strike rod (14) away from the damping sleeve (13). A second strike block (16) opposite to the first strike block (15) is provided on the mounting plate (5).

Images