Portable grounding device for shore crane welding

Abstract

The utility model relates to welding ground connection technical field, especially, a portable grounding device for shore crane car welding is provided, including connecting plate, is fixedly arranged with clamping plate on the connecting plate, at least two groups of connecting components are arranged on the connecting plate, each connecting component includes the connecting column installed on the connecting plate, the one end of the connecting column away from the connecting plate is connected with permanent magnet, the permanent magnet of one end of the connecting column can be conveniently adsorbed and fixed in the car track or metal structure, need not look for the clamping point at will in the car mechanism edge, solve the problem that the ground connection position adaptability is poor, the clamping plate on the connecting plate can provide special grounding connection point, at least two groups of connecting components are matched and the overall stability of the device is enhanced, effectively avoid the shaking and falling of welding machine grounding wire clamp due to the lack of fixed support, ensure that the ground connection is continuously reliable, stabilize the ground loop simultaneously, prevent welding current fluctuation, and further guarantee the smooth development of car mechanism welding operation and welding quality.

Description

Technical Field

[0001] This utility model relates to the field of welding grounding technology, and in particular to a portable grounding device for welding gantry cranes. Background Technology

[0002] As the core equipment for cargo handling operations in ports, quay cranes' trolley mechanisms are key components that enable the crane to travel along the tracks, directly determining the equipment's operating range and efficiency. With increasing usage time and accumulated workload, the components of the quay crane's trolley mechanism are prone to metal fatigue under repeated stress and vibration, leading to structural cracks, localized damage, and other malfunctions. This not only affects the operational stability of the trolley mechanism but may also pose a threat to the overall operational safety of the quay crane.

[0003] Therefore, regular welding reinforcement and maintenance of the gantry crane mechanism, as well as the installation of necessary components, have become important maintenance methods to ensure the continuous and reliable operation of quay crane equipment. The smooth conduct of welding operations depends on the construction of a stable grounding circuit. However, currently, there is a lack of suitable dedicated structures for connecting the welding machine grounding clamps during gantry crane welding operations.

[0004] Because the design of the main structure of the trolley mechanism does not take grounding requirements into account, the welding machine grounding clamp can only be arbitrarily clamped at a non-dedicated position on the edge of the trolley mechanism during on-site operations. This temporary grounding method has significant drawbacks: on the one hand, the lack of a fixed support structure makes the grounding clamp not secure, and it is easy to shake or even fall off under the vibration of operation or slight touch, which cannot guarantee the continuity of the grounding connection; on the other hand, the non-dedicated connection point makes the grounding circuit contact unstable, which may cause fluctuations in welding current and affect the welding quality. Utility Model Content

[0005] To address the problem of unstable grounding clamps and poor contact affecting welding quality, this utility model provides a portable grounding device for welding quay cranes.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows: A portable grounding device for welding quay cranes includes a connecting plate with a clamping plate fixedly mounted on it. At least two sets of connecting components are provided on the connecting plate. Each set of connecting components includes a connecting post mounted on the connecting plate. A permanent magnet is connected to the end of the connecting post furthest from the connecting plate. This portable grounding device for welding quay cranes can be easily attracted and fixed to the quay crane track or metal structure via the permanent magnet at one end of the connecting post, eliminating the need to search for clamping points arbitrarily at the edge of the quay crane mechanism, thus solving the problem of poor grounding position adaptability. The clamping plate on the connecting plate provides a dedicated grounding connection point, and the at least two sets of connecting components enhance the overall stability of the device, effectively preventing the welding machine grounding clamp from shaking or falling due to lack of fixed support, ensuring a continuous and reliable grounding connection, stabilizing the grounding circuit, preventing welding current fluctuations, and thus ensuring the smooth operation and welding quality of the quay crane mechanism.

[0007] Preferably, the clamping plate is vertically fixed to one side of the connecting plate; the connecting plate, in conjunction with the clamping plate, is equipped with a pressing component for pressing the welding machine grounding clamp. The clamping plate's vertical fixation to one side of the connecting plate provides a neat and dedicated clamping reference for the welding machine grounding clamp, avoiding the previous chaotic problem of haphazard clamping at the edge of the trolley; the pressing component, in conjunction with the clamping plate, effectively presses and limits the grounding clamp, ensuring a tight fit between the grounding clamp and the clamping plate, preventing it from shaking or falling off due to operational vibrations, guaranteeing a continuous and stable grounding connection, and optimizing the grounding loop contact state, reducing welding current fluctuations, and further ensuring the reliability and welding quality of the trolley mechanism's welding operations.

[0008] Preferably, the extrusion assembly includes a cylinder; both ends of the cylinder are connected to clamping plates via screws. The cylinder, connected to the clamping plates via screws at both ends, has a simple and stable structure, which can form a stable extrusion on the welding machine grounding clamp, ensuring a tight and reliable grounding contact.

[0009] Preferably, one end of the screw radially penetrates the cylinder and is fixedly mounted on one side of the clamping plate; two nuts are threaded onto the screw; the cylinder is mounted on the screw between the two nuts. The screw's radial penetration of the cylinder and fixation to the clamping plate provides a stable mounting foundation for the cylinder, preventing displacement during operation; the two nuts on the screw confine the cylinder in the middle, allowing for flexible adjustment of the cylinder's position on the screw by tightening the nuts, adapting to different specifications of welding machine grounding clamps. Simultaneously, it stably controls the pressure exerted by the cylinder on the grounding clamp, ensuring tight contact between the grounding clamp and the device, preventing loosening due to operational vibrations, and guaranteeing a continuous and stable grounding circuit.

[0010] Preferably, the outer diameter of the cylinder is less than or equal to 0.6 times the width of the connecting plate. This avoids the cylinder protruding excessively from the connecting plate, reduces operational interference with other components of the trolley mechanism, and ensures compatibility and ease of operation when the welding machine grounding clamp is used.

[0011] Preferably, the connecting post penetrates the connecting plate; the connecting post is connected to the connecting plate by two nuts located on the upper and lower surfaces of the connecting plate respectively; the nuts are threaded onto the connecting post. The connection post penetrating the connecting plate and being connected by two nuts on its upper and lower surfaces allows for bidirectional locking to ensure a stable connection between the connecting post and the connecting plate, while also allowing for fine-tuning of the position of the connecting plate on the connecting post, thus facilitating use.

[0012] Preferably, the connecting column is integrally formed or welded with the permanent magnet.

[0013] Preferably, the permanent magnet has a through hole in the middle to mate with the connecting post; the bottom surface of the permanent magnet has a countersunk groove to mate with the through hole; the end of the connecting post away from the connecting plate is threaded with nut three and nut four; nut three is located on the top surface of the permanent magnet, and nut four is located in the countersunk groove; the end of the connecting post away from the connecting plate extends out of the countersunk groove. The through hole in the middle of the permanent magnet allows the connecting post to pass through, and the countersunk groove on the bottom surface accommodates nut four, forming a two-way locking mechanism with nut three on the top surface. This ensures a stable connection between the permanent magnet and the connecting post, while preventing nut four from protruding and affecting the permanent magnet's fit against the trolley track or metal structure. Furthermore, the protruding end of the connecting post further ensures stable grounding circuit contact, reduces welding current fluctuations, and improves welding quality.

[0014] Preferably, the end of the connecting column away from the connecting plate is provided with a cone.

[0015] Preferably, an insulating layer is fixedly provided on the inner wall of the through hole; a gap is provided between the connecting post and the insulating layer. The insulating layer on the inner wall of the through hole can prevent the connecting post from directly conducting electricity with the permanent magnet to prevent current loss or interference. The gap between the connecting post and the insulating layer is a pre-installed allowance for assembly, ensuring that while the permanent magnet is attracted, the cone head can abut against the trolley rail or metal structure to ensure the stability of the grounding circuit.

[0016] As can be seen from the above technical solutions, the advantages of this utility model include: 1. This portable grounding device for welding gantry cranes can be easily attached to the gantry rail or metal structure via a permanent magnet at one end of the connecting column, eliminating the need to search for clamping points at the edge of the gantry mechanism and solving the problem of poor grounding position adaptability. The clamping plate on the connecting plate can provide a dedicated grounding connection point, and with at least two sets of connecting components, the overall stability of the device is enhanced, effectively preventing the welding machine grounding clamp from shaking or falling due to lack of fixed support, ensuring a continuous and reliable grounding connection, stabilizing the grounding circuit, preventing welding current fluctuations, and thus ensuring the smooth progress and welding quality of the gantry mechanism welding operation.

[0017] 2. The through hole in the middle of the permanent magnet allows the connecting post to pass through, and the countersunk groove on the bottom surface accommodates nut four, which, together with nut three on the top surface, forms a two-way locking mechanism. This ensures a stable connection between the permanent magnet and the connecting post, while preventing nut four from protruding and affecting the permanent magnet's fit against the trolley track or metal structure. Furthermore, the protruding end of the connecting post further ensures stable grounding circuit contact, reduces welding current fluctuations, and improves welding quality. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a front view schematic diagram of the present utility model.

[0020] Figure 2 This is a side view of the present invention.

[0021] Figure 3 This is a cross-sectional structural diagram of the connecting column and the permanent magnet of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1-Connecting plate, 2-Clamping plate, 3-Connecting column, 4-Permanent magnet, 5-Cylinder, 6-Screw, 7-Nut one, 8-Nut two, 9-Nut three, 10-Nut four; 301 - Conical head; 401 - Through hole; 402 - Countersunk groove; 403 - Insulation layer. Detailed Implementation

[0023] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0024] Example 1 like Figure 1-2 As shown, a portable grounding device for welding gantry cranes includes a connecting plate 1, on which a clamping plate 2 is fixedly mounted; at least two sets of connecting components are provided on the connecting plate 1; each set of connecting components includes a connecting post 3 mounted on the connecting plate 1; a permanent magnet 4 is connected to one end of the connecting post 3 away from the connecting plate 1.

[0025] This portable grounding device for welding gantry cranes can be easily attached to the gantry rail or metal structure via a permanent magnet 4 at one end of the connecting column 3, eliminating the need to search for clamping points at the edge of the gantry mechanism and solving the problem of poor grounding position adaptability. The clamping plate 2 on the connecting plate 1 provides a dedicated grounding connection point, and with at least two sets of connecting components, the overall stability of the device is enhanced, effectively preventing the welding machine grounding clamp from shaking or falling due to lack of fixed support, ensuring a continuous and reliable grounding connection, stabilizing the grounding circuit, preventing welding current fluctuations, and thus ensuring the smooth progress and quality of welding operations on the gantry mechanism.

[0026] In the above configuration, the clamping plate 2 is vertically fixed to one side of the connecting plate 1; the connecting plate 1, in conjunction with the clamping plate 2, is provided with an extrusion assembly for extruding the grounding clamp of the welding machine. The extrusion assembly includes a cylinder 5; both ends of the cylinder 5 are connected to the clamping plate 2 via screws 6. One end of the screw 6 passes radially through the cylinder 5 and is fixed to one side of the clamping plate 2; two nuts 7 are threaded onto the screw 6; the cylinder 5 is positioned on the screw 6 between the two nuts 7. The connecting column 3 passes through the connecting plate 1; the connecting column 3 is connected to the connecting plate 1 via two nuts 8 located on the upper and lower surfaces of the connecting plate 1 respectively; the nuts 8 are threaded onto the connecting column 3. The connecting column 3 is integrally formed with the permanent magnet 4; in other alternative embodiments, the connecting column 3 is welded to the permanent magnet 4.

[0027] The clamping plate 2 is vertically fixed to one side of the connecting plate 1, providing a neat and dedicated clamping reference for the welding machine grounding clamp, avoiding the chaotic problem of random clamping at the edge of the trolley in the past. The extrusion assembly on the clamping plate 2 effectively extrudes and limits the grounding clamp, ensuring a tight fit between the clamp and the clamping plate 2, preventing it from shaking or falling due to operational vibrations, guaranteeing a continuous and stable grounding connection. It also optimizes the grounding circuit contact state, reducing welding current fluctuations, further ensuring the reliability and welding quality of the trolley mechanism's welding operations. The cylinder 5 is connected to the clamping plate 2 via screws 6 at both ends, featuring a simple and stable structure that provides stable extrusion of the welding machine grounding clamp, ensuring a tight and reliable grounding contact. The screw 6 passes radially through the cylinder 5 and is fixed to the clamping plate 2, providing a stable mounting base for the cylinder 5 and preventing it from shifting during operation. The two nuts on the screw 6 limit the cylinder 5 in the middle, allowing for flexible adjustment of its position on the screw 6 by tightening the nuts. This adapts to different specifications of welding machine grounding clamps and stably controls the pressure exerted by the cylinder 5 on the grounding clamp, ensuring a tight contact between the grounding clamp and the device, preventing loosening due to operational vibrations, and guaranteeing a continuous and stable grounding circuit. The connecting post 3 passes through the connecting plate 1 and is connected via two nuts 8 on its upper and lower surfaces. This provides bidirectional locking to ensure a stable connection between the connecting post 3 and the connecting plate 1, and also allows for fine-tuning of the position of the connecting plate 1 on the connecting post 3 for ease of use.

[0028] The outer diameter of cylinder 5 is equal to 0.6 times the width of connecting plate 1. This ensures that cylinder 5 does not protrude excessively from connecting plate 1, reducing operational interference with other components of the trolley mechanism, while also guaranteeing compatibility and ease of operation when the welding machine grounding clamp is used.

[0029] Example 2 like Figure 3 As shown, the difference from Embodiment 1 lies in the connection between the connecting post 3 and the permanent magnet 4. A through hole 401 is formed in the middle of the permanent magnet 4 to mate with the connecting post 3; a countersunk groove 402 is formed on the bottom surface of the permanent magnet 4 to mate with the through hole 401; a nut 9 and a nut 10 are threaded onto the end of the connecting post 3 away from the connecting plate 1; the nut 9 is located on the top surface of the permanent magnet 4, and the nut 10 is located inside the countersunk groove 402; the end of the connecting post 3 away from the connecting plate 1 extends out of the countersunk groove 402. A tapered head 301 is provided at the end of the connecting post 3 away from the connecting plate 1. An insulating layer 403 is fixedly provided on the inner wall of the through hole 401; a gap is provided between the connecting post 3 and the insulating layer 403.

[0030] The permanent magnet 4 has a through hole 401 in the middle for the connecting post 3 to pass through, and a countersunk groove 402 on the bottom surface to accommodate the nut 10. Together with the nut 9 on the top surface, they form a two-way locking mechanism. This ensures a stable connection between the permanent magnet 4 and the connecting post 3, while preventing the nut 10 from protruding and affecting the fit of the permanent magnet 4 to the trolley track or metal structure. Furthermore, the extended end of the connecting post 3 further ensures stable grounding circuit contact, reduces welding current fluctuations, and improves welding quality. An insulating layer 403 is provided on the inner wall of the through hole 401 to prevent direct conductivity between the connecting post 3 and the permanent magnet 4, thus preventing current loss or interference. The gap between the connecting post 3 and the insulating layer 403 is a pre-installed allowance for assembly, facilitating the installation and adaptation of the connecting post 3 and the permanent magnet 4.

[0031] The working principle of the portable grounding device for welding gantry cranes is as follows: The end of the connecting column 3 passes through the connecting plate 1 and the permanent magnet 4. The connecting column 3 is locked bidirectionally by the nuts 2 8 on the upper and lower surfaces of the connecting plate 1, and the position is finely adjusted so that the permanent magnet 4 connected to the other end of the connecting column 3 is tightly attached to the gantry rail or metal structure (the through hole 401 of the permanent magnet 4 allows the connecting column 3 to pass through, the countersunk groove 402 accommodates the nut 4 10 to avoid protrusion affecting the fit, the top nut 3 9 further locks the permanent magnet 4, and the insulating layer 403 on the inner wall of the through hole 401 prevents the connecting column 3 and the permanent magnet 4 from directly conducting electricity and losing current). (The gap between the two is for easy assembly). Then, the welding machine grounding clamp is clamped to the clamping plate 2, which is vertically fixed on the connecting plate 1, or the cylinder 5 of the extrusion assembly is clamped directly. The position of the cylinder 5 on the screw 6 is adjusted by the two nuts 7 on the screw 6 (the outer diameter of the cylinder 5 does not exceed 0.6 times the width of the connecting plate 1 to avoid operational interference), so that the cylinder 5 forms a stable extrusion limit on the grounding clamp; finally, the grounding circuit is closed through the conductive path formed by the connecting plate 1, clamping plate 2, cylinder 5, connecting column 3, and permanent magnet 4, ensuring stable conduction of welding current and reliable welding operation of the trolley mechanism. The gap between the connecting column 3 and the insulating layer 403 is a reserved allowance for assembly, ensuring that while the permanent magnet 4 is attracted, the cone 301 can abut against the trolley track or metal structure, ensuring the stability of the grounding circuit.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A portable grounding device for welding gantry cranes, comprising a connecting plate (1), characterized in that, A clamping plate (2) is fixedly installed on the connecting plate (1); at least two sets of connecting components are provided on the connecting plate (1); each set of connecting components includes a connecting column (3) installed on the connecting plate (1); a permanent magnet (4) is connected to one end of the connecting column (3) away from the connecting plate (1).

2. The portable grounding device for welding gantry cranes according to claim 1, characterized in that, The clamping plate (2) is vertically fixed on one side of the connecting plate (1); the connecting plate (1) is equipped with an extrusion assembly for extruding the ground wire clamp of the welding machine in conjunction with the clamping plate (2).

3. The portable grounding device for welding gantry cranes according to claim 2, characterized in that, The extrusion assembly includes a cylinder (5); both ends of the cylinder (5) are connected to clamping plates (2) via screws (6).

4. The portable grounding device for welding gantry cranes according to claim 3, characterized in that, One end of the screw (6) passes through the cylinder (5) radially and is fixedly mounted on one side of the clamping plate (2); two nuts (7) are threaded on the screw (6); the cylinder (5) is mounted on the screw (6) between the two nuts (7).

5. The portable grounding device for welding gantry cranes according to claim 4, characterized in that, The outer diameter of the cylinder (5) is less than or equal to 0.6 times the width of the connecting plate (1).

6. The portable grounding device for welding gantry cranes according to claim 1, characterized in that, The connecting column (3) is set through the connecting plate (1); the connecting column (3) is connected to the connecting plate (1) by two nuts (8) located on the upper and lower surfaces of the connecting plate (1) respectively; the nuts (8) are threaded on the connecting column (3).

7. The portable grounding device for welding gantry cranes according to claim 5, characterized in that, The connecting column (3) and the permanent magnet (4) are integrally formed or welded.

8. The portable grounding device for welding gantry cranes according to claim 5, characterized in that, The permanent magnet (4) has a through hole (401) in the middle of the connecting column (3); the bottom surface of the permanent magnet (4) has a countersunk groove (402) in the through hole (401); the end of the connecting column (3) away from the connecting plate (1) is threaded with a nut three (9) and a nut four (10); the nut three (9) is located on the top surface of the permanent magnet (4), and the nut four (10) is located in the countersunk groove (402); the end of the connecting column (3) away from the connecting plate (1) extends out of the countersunk groove (402).

9. The portable grounding device for welding gantry cranes according to claim 8, characterized in that, A cone (301) is provided at the end of the connecting column (3) away from the connecting plate (1).

10. The portable grounding device for welding gantry cranes according to claim 9, characterized in that, An insulating layer (403) is fixedly installed on the inner wall of the through hole (401); a gap is provided between the connecting post (3) and the insulating layer (403).

Images