Correcting device for gantry crane

Abstract

The utility model discloses a deviation rectifying device for a gantry crane, which belongs to the technical field of gantry cranes and comprises two support rods, the two support rods are mounted below a main end beam and an auxiliary end beam of the gantry crane, the bottom ends of the two support rods are connected with a support, one side of the end of the support is rotatably connected with a traveling wheel, and the traveling wheel is connected with a traveling wheel. The walking wheels walk along the track of the gantry crane, the encoder is fixedly installed on the other side of the support, the encoder detects the speed of the motors of the driving wheels on the two sides and transmits signals to the controller, and when deviation is detected, the controller controls automatic speed reduction or adjusts the speed of the motor on one side, so that the gantry crane returns to the correct track. The gantry crane is ensured to keep straight running in the running process, deviation is avoided, and running safety and equipment completeness are ensured.

Description

Technical Field

[0001] This utility model belongs to the technical field of gantry cranes, and specifically relates to a gantry crane correction device. Background Technology

[0002] During operation, large-span gantry cranes experience varying running speeds between the rigid and flexible outriggers due to differences in running resistance between the two legs, wheel slippage, wheel diameter differences, and variations in track height and parallelism. One outrigger tends to lead the other. When this lead (or skew) exceeds a certain value, significant deformation of the crane frame structure increases the running resistance and internal forces on the metal components, potentially leading to motor burnout or damage to metal parts. This reduces the safety and lifespan of the drive unit and metal components, and may even render the crane inoperable. Utility Model Content

[0003] The purpose of this invention is to provide a gantry crane correction device to ensure that the gantry crane maintains straight-line travel during operation, avoids deviation, and ensures operational safety and equipment integrity.

[0004] The technical solution adopted by this utility model is a gantry crane correction device, which includes two support rods. The two support rods are respectively installed below the main end beam and the secondary end beam of the gantry crane. The bottom end of both support rods is connected to a bracket. A traveling wheel is rotatably connected to one side of the bracket end, and an encoder is installed on the other side. The housing of the encoder is fixedly connected to the bracket, and the rotating shaft of the encoder is fixedly connected to the traveling wheel. The traveling wheel travels along the gantry crane track.

[0005] Preferably, the aforementioned traveling wheels are installed between the drive wheels at both ends of the gantry crane.

[0006] Preferably, the bracket is fixedly connected to the support rod by a fixing plate. The fixing plate is U-shaped, and one side of the fixing plate is welded to the support rod. The bracket is installed between the two side plates of the fixing plate by a screw. Thin nuts are installed on the screw on both sides of the bracket for positioning. The two ends of the screw pass through the two side plates of the fixing plate and are hinged to them. Thick nuts are connected to the outer end of the screw. An elastic element is installed between the screw and the bracket to elastically press the traveling wheel onto the track.

[0007] Preferably, the elastic element is a torsion spring, which is sleeved on the screw between the thin nut and the fixing plate. The two ends of the torsion spring abut against the inner side wall of the fixing plate, and the torsion springs on both sides of the bracket are connected and the middle of the torsion spring overlaps the bracket to press the bracket.

[0008] Preferably, the top of the support rod is connected to the main end beam or the secondary end beam via a connecting plate. The top and bottom ends of the main end beam or the secondary end beam both extend outward and are provided with connecting parts. The front of the connecting plate is provided with a horizontal U-shaped groove corresponding to the connecting part of the main end beam or the secondary end beam. After the connecting part is inserted into the horizontal U-shaped groove, it is locked by screwing in a set screw against the connecting part. The back of the connecting plate is close to the support rod and is fixedly connected by fastening bolts.

[0009] Preferably, the connecting plate has a limiting boss in the middle of its back side and a support rod for positioning. The limiting boss has strip-shaped mounting holes on its upper and lower sides for fastening bolt installation.

[0010] Compared with the prior art, the beneficial effect of this utility model is that by installing traveling wheels under the main end beam and the auxiliary end beam of the gantry crane, the gantry crane travels along the track along the traveling path. The speed of the motors of the drive wheels on both sides is detected by the encoder connected to the traveling wheels. When a deviation is detected, the speed of one side motor is adjusted to bring the gantry crane back to the correct track, ensuring that the gantry crane maintains straight travel during operation, avoiding deviation, and ensuring operational safety and equipment integrity. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the gantry crane's alignment device.

[0012] Figure 2 A partial structural schematic diagram of the correction device for a gantry crane;

[0013] Figure 3 This is a schematic diagram of the bracket installation for the correction device;

[0014] Figure 4 This is a schematic diagram of the installation of the correction device for a gantry crane. Detailed Implementation

[0015] The present invention will be further explained below with reference to the accompanying drawings to enable those skilled in the art to better understand it.

[0016] Example 1

[0017] Please see Figure 1-4A gantry crane correction device includes two support rods 9, made of square steel or shaped steel. The two support rods 9 are installed below the main end beam 18 and the secondary end beam 19 of the gantry crane. The bottom ends of the two support rods 9 are connected to a bracket 3. A traveling wheel 1 is rotatably connected to one end of the bracket 3, and an encoder 2 is installed on the other end. The housing of the encoder 2 is fixedly connected to the bracket 3, and the rotating shaft of the encoder 2 is fixedly connected to the traveling wheel 1. The traveling wheel 1 travels along the gantry crane track 17. The encoder 2, connected to the traveling wheel 1, detects the speed of the motors on both sides of the drive wheels. When a deviation is detected, the speed of one side of the motor is adjusted to return the gantry crane to the correct track, ensuring that the gantry crane maintains straight-line travel during operation, avoiding deviation, and ensuring operational safety and equipment integrity.

[0018] To improve detection accuracy, the traveling wheel 2 is installed between the drive wheels at both ends of the gantry crane, especially at a distance of 1-1.5m from one drive wheel.

[0019] Furthermore, the bracket 3 is installed between the two side plates of the fixed plate 5 via screws 4, and thin nuts 7 are installed on both sides of the bracket 3 on the screws 4 for positioning to prevent the bracket 3 from loosening and ensure detection accuracy; the two ends of the screws 4 pass through the two side plates of the fixed plate 5 and are hinged to them, and the outer end of the screws 4 is connected to thick nuts 8. An elastic element is installed between the screws 4 and the bracket 3 to elastically press the traveling wheel 1 onto the track 17. In this embodiment, the above-mentioned elastic element is a torsion spring 6, which is sleeved on the screws 4 between the thin nuts 7 and the fixed plate 5. The two ends of the torsion spring 6 abut against the inner side wall of the fixed plate 5, and the torsion springs 6 on both sides of the bracket 3 are connected and the middle of the torsion spring 6 overlaps the bracket 3 to press the bracket 3, so as to ensure that the traveling wheel 1 travels along the track 17 and detects whether the drive wheel has deviated.

[0020] The top of the support rod 9 is bolted to the main end beam 18 or the secondary end beam 19 via a connecting plate 10, facilitating assembly and disassembly and solving the problem of welding damage to the equipment surface. The top and bottom of the main end beam 18 or the secondary end beam 19 are provided with connecting parts 16 extending outward. The main end beam 18 and the secondary end beam 19 are made of I-beams, and the top and bottom of the beams are respectively provided with upper and lower baffles as connecting parts 16. The front of the connecting plate 10 is provided with horizontal U-shaped grooves 14 corresponding to the connecting parts 16 of the main end beam 18 or the secondary end beam 19. After the connecting part 16 is inserted into the horizontal U-shaped groove 14, it is locked by screwing in a set screw 15 against the connecting part 16. The back of the connecting plate 10 is close to the support rod 9 and is fixedly connected by fastening bolts 13. The middle of the back of the connecting plate 10 is provided with a limiting boss 11, which is embedded and positioned with the support rod 9. The upper and lower sides of the limiting boss 11 are provided with strip-shaped mounting holes 12 for fastening bolts 13 to be installed.

[0021] The encoder 2's signal output can be connected to the control system via a cable. The control system is connected to the motors of each drive wheel of the gantry crane. When a deviation is detected, the controller automatically adjusts the speed of one side of the motor to bring the gantry crane back to the correct track. The system also includes deviation alarm and automatic stop functions. When the deviation exceeds a certain range, the operating circuit is automatically disconnected to ensure safety. Alternatively, the deviation signal detected by the encoder can be fed back to the operator's cab for manual adjustment and correction.

[0022] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from its design spirit and principles should fall within the protection scope defined by the claims of the present invention.

Claims

1. A gantry crane alignment device, characterized in that, It includes two support rods (9), which are installed below the main end beam (18) and the secondary end beam (19) of the gantry crane respectively. The bottom ends of the two support rods (9) are connected to brackets (3). One side of the bracket (3) is rotatably connected to a traveling wheel (1), and the other side is equipped with an encoder (2). The housing of the encoder (2) is fixedly connected to the bracket (3), and the rotating shaft of the encoder (2) is fixedly connected to the traveling wheel (1). The traveling wheel (1) travels along the gantry crane track (17).

2. The gantry crane alignment device according to claim 1, characterized in that, The traveling wheel (1) is installed between the drive wheels at both ends of the gantry crane.

3. The gantry crane alignment device according to claim 1, characterized in that, The bracket (3) is fixedly connected to the support rod (9) through the fixing plate (5). The fixing plate (5) is U-shaped. One side of the fixing plate (5) is welded to the support rod (9). The bracket (3) is installed between the two side plates of the fixing plate (5) through the screw (4). Thin nuts (7) are installed on the two sides of the bracket (3) on the screw (4) for positioning. The two ends of the screw (4) pass through the two side plates of the fixing plate (5) and are hinged to it. The outer end of the screw (4) is connected to a thick nut (8). An elastic element is installed between the screw (4) and the bracket (3) to elastically press the walking wheel (1) onto the track (17).

4. The gantry crane alignment device according to claim 3, characterized in that, The elastic element is a torsion spring (6). The torsion spring (6) is sleeved on the screw (4) between the thin nut (7) and the fixing plate (5). The two ends of the torsion spring (6) abut against the inner side wall of the fixing plate (5). The torsion springs (6) on both sides of the bracket (3) are connected and the middle part of the torsion spring (6) overlaps on the bracket (3) to press the bracket (3).

5. A gantry crane alignment device according to claim 1, characterized in that, The top end of the support rod (9) is connected to the main end beam (18) or the secondary end beam (19) through the connecting plate (10). The top and bottom ends of the main end beam (18) or the secondary end beam (19) are provided with connecting parts (16) extending outward. The front of the connecting plate (10) is provided with horizontal U-shaped grooves (14) corresponding to the connecting parts (16) of the main end beam (18) or the secondary end beam (19). After the connecting part (16) is inserted into the horizontal U-shaped groove (14), it is locked by screwing in the set screw (15) against the connecting part (16). The back of the connecting plate (10) is close to the support rod (9) and is fixedly connected by fastening bolts (13).

6. A gantry crane alignment device according to claim 5, characterized in that, The connecting plate (10) has a limiting boss (11) in the middle of the back side and a support rod (9) for positioning. The limiting boss (11) has strip-shaped mounting holes on the upper and lower sides for fastening bolts (13) to be installed.

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