Traction power supply contact line breakpoint connection method
By performing local line replacement and automatic pressurization welding technology at the abnormal wear points of the contact line, the low cost and high operating stability problems of contact line wear rectification are solved, and the effects of resource saving, cost reduction and power supply stability are achieved.
Patent Information
- Application Number
- CN202510170122.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2025-05-16
AI Technical Summary
The existing technology is difficult to take into account the low cost and high operating stability requirements of contact line wear rectification, and there are problems of waste of resources and high operating and maintenance costs.
By confirming the abnormal wear point of the contact line, and with the maximum wear point as the center, we look for the wear and restore to the normal wear point on the left and right sides, select the area that is restored to the normal wear point as the local line change joint point and breakpoint position, and use automatic pressurization welding technology of new and old contact lines for connection.
It realizes resource saving, reduces operation and maintenance costs, improves the operating stability and power supply reliability of contact lines, simplifies the operation process, improves construction efficiency, and enhances the safety and durability of contact lines.
Smart Images
Figure CN120016372A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of electric power technology, and in particular to a method for connecting breakpoints of a traction power supply contact line. Background Art
[0002] The contact wire in the traction power supply system is a key component of rail transit power supply, which is directly related to the stable power supply and safe operation of the train. During long-term use, due to friction, arcing and other reasons, the surface of the contact wire will produce varying degrees of wear, resulting in local abnormal wear or even breakage, affecting the power supply performance.
[0003] Traditionally, the whole anchor section replacement method can solve the problem of abnormal wear sections, but it also replaces the remaining contact lines with normal wear, which often have not reached their service life. This is undoubtedly a waste of resources and greatly increases the cost of operation and maintenance. In contrast, through the mechanical docking of the new and old contact lines, the points that have been worn to the limit can be replaced in a targeted manner, but this will cause the original continuous contact line to have breakpoints at the joints, which will have a certain impact on the electrical and mechanical reliability of the contact network, and additional technical measures need to be taken, so there are certain technical difficulties.
[0004] Existing technical solutions are difficult to simultaneously take into account the low cost and high operational stability requirements of contact line wear remediation. Therefore, there is an urgent need for an efficient, reliable and economical contact line breakpoint connection method to quickly repair wear and breakage problems and ensure the safety and stability of rail transit power supply. Summary of the invention
[0005] In view of this, the present invention proposes a method for connecting the breakpoints of a traction power supply contact line, aiming to provide an efficient, reliable and economical connection solution to solve the problem of connecting the breakpoints of the contact line in the prior art.
[0006] The present invention proposes a method for connecting a traction power supply contact line at a breakpoint, comprising:
[0007] According to the overall wear of the contact line, identify the abnormal wear points, and with the maximum wear point as the center, look for the wear points on both sides where the wear has returned to normal; select the area where the wear has returned to normal as the local line change joint point and breakpoint position, and mark the bus and contact line;
[0008] Remove the contact wire to be replaced, remove the old contact wire from the busbar starting from the terminal, and remove the oil and dirt on the busbar; place the contact wire to be replaced to a distance of not less than 1 meter beyond the predetermined breakpoint, and use the excess as a reserve for clamping the contact wire welding mold, and stop laying out the wire; cut the contact wire at the marked point and process the broken section, and fix the contact wire to the busbar;
[0009] Adjust the welding equipment to below the contact wire mark, prepare a new contact wire, and straighten 50 cm at both ends of the new and old contact wires; install the new contact wire and the old contact wire into the clamping assembly of the welding equipment, so that the contact wires at both ends touch each other in the center of the welding mold, and ensure that the length of the contact wires at both ends beyond the welding mold is equal; perform automatic pressurized welding, and grind the contact wire joints after welding to ensure a smooth transition of the joints; check the size of the groove at the joints to be consistent with the original contact wire to ensure reliable clamping of the busbar jaws.
[0010] Preferably, the distance between the left and right sides of the point where the wear of the contact line recovers to normal wear point does not exceed 10 cm.
[0011] Preferably, the clamping assembly used for the contact wire during welding is a two-side clamp, and the two-side clamps are in contact with each other when the contact wires are butted and the length of the welding point exceeds the mold length by the same amount.
[0012] Preferably, the welding mold adopts a temperature control system, and the temperature control system is configured to stabilize the contact line welding temperature.
[0013] Preferably, during the grinding of the contact line after welding is completed, a polishing tool is used to ensure that there is no protrusion at the joint.
[0014] Preferably, after welding is completed, the joint of the contact wire has a smooth appearance and a consistent contact surface.
[0015] Preferably, during the contact line breakpoint connection process, the welding equipment used includes an automatic pressurization function.
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] Save resources and reduce costs: Through partial line replacement, only the abnormally worn section is replaced, avoiding the waste of resources caused by replacing the entire anchor section contact line, effectively reducing operation and maintenance costs.
[0018] Improve operational stability: Automatic pressurized welding technology is used for new and old contact wires to ensure smooth transition of joints, stable electrical and mechanical properties of the contact wires, and reliable power supply.
[0019] Efficient construction and simplified operation: Through precise marking and automated welding equipment, manual intervention is reduced, construction efficiency is improved, contact line repair time is shortened, and the impact on train operation is reduced.
[0020] Reliable welding quality: using welding molds and straightening equipment to achieve high contact wire docking accuracy, firm welding, and no protrusions in the joints, meeting the electrical and mechanical requirements of the contact network.
[0021] Enhanced safety and durability: The size of the groove at the joint is consistent with the original contact line, ensuring reliable clamping of the busbar and improving the overall service life and operational safety of the contact line. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:
[0023] Figure 1 The present invention is a flow chart of the method for connecting the breakpoints of the traction power supply contact line. DETAILED DESCRIPTION
[0024] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0025] See also Figure 1 This embodiment provides a method for connecting a traction power supply contact line breakpoint, comprising:
[0026] According to the overall wear of the contact line, identify the abnormal wear points, and with the maximum wear point as the center, look for the wear points on both sides where the wear has returned to normal; select the area where the wear has returned to normal as the local line change joint point and breakpoint position, and mark the bus and contact line;
[0027] Remove the contact wire to be replaced, remove the old contact wire from the busbar starting from the terminal, and remove the oil and dirt on the busbar; place the contact wire to be replaced to a distance of not less than 1 meter beyond the predetermined breakpoint, and use the excess as a reserve for clamping the contact wire welding mold, and stop laying out the wire; cut the contact wire at the marked point and process the broken section, and fix the contact wire to the busbar;
[0028] Adjust the welding equipment to below the contact wire mark, prepare a new contact wire, and straighten 50 cm at both ends of the new and old contact wires; install the new contact wire and the old contact wire into the clamping assembly of the welding equipment, so that the contact wires at both ends touch each other in the center of the welding mold, and ensure that the length of the contact wires at both ends beyond the welding mold is equal; perform automatic pressurized welding, and grind the contact wire joints after welding to ensure a smooth transition of the joints; check the size of the groove at the joints to be consistent with the original contact wire to ensure reliable clamping of the busbar jaws.
[0029] It can be seen that this embodiment proposes an innovative method for connecting the breakpoint of the traction power supply contact line, which not only improves the working efficiency but also ensures the connection quality. The specific steps include:
[0030] First, carefully identify the points of abnormal wear based on the overall wear of the contact line. With these points of maximum wear as the center, look for points on the left and right sides where the wear has returned to normal levels. Select these areas that have returned to normal wear levels as the specific locations of local line change joints and breakpoints, and clearly mark the busbars and contact lines at these locations;
[0031] Next, start removing the part of the contact wire that needs to be replaced. Starting from the terminal of the contact wire, carefully remove the old contact wire from the busbar, and thoroughly clean the oil and debris on the busbar during the removal process. Extend the contact wire that needs to be replaced to the predetermined breakpoint position, and ensure that the extended part is at least more than 1 meter to reserve enough length for the clamping of the welding mold. Stop laying out the wire after reaching the predetermined length, then accurately cut the contact wire at the marked point and properly handle the broken section. After processing, fix the contact wire to the busbar to ensure its stability;
[0032] Then, adjust the welding equipment to the position below the contact wire marking point and prepare a new contact wire. Carefully straighten the 50cm lengths at both ends of the new and old contact wires to ensure their straightness. Install the new and old contact wires into the clamping assembly of the welding equipment, ensuring that the contact wires at both ends are in close contact with each other in the center of the welding mold, and at the same time ensure that the lengths of the contact wires at both ends that extend beyond the welding mold are equal. After that, start the automatic pressurized welding program, and after welding, carefully polish the contact wire joints to ensure a smooth transition at the joints without any protrusions or depressions. Finally, check the size of the groove at the joint to ensure that it is exactly the same as the size of the original contact wire, so as to ensure the reliability of the busbar jaw clamping.
[0033] It can be understood that the advantage of this embodiment is that it provides a systematic and refined operating process, which significantly improves the accuracy and efficiency of the contact line breakpoint connection. By detailed planning of the selection of local line change joint points and breakpoints, not only is unnecessary material waste reduced, but also the mechanical strength and electrical performance of the connection are ensured. In addition, this method emphasizes the pretreatment of the bus and contact wire, effectively removes oil stains and debris that may affect the welding quality, and further improves the reliability of the connection. At the same time, by precisely controlling the straightening, clamping and welding process of the new and old contact wires, a smooth transition at the connection is ensured, avoiding electrical failures or mechanical damage caused by poor joints. In summary, the traction power supply contact line breakpoint connection method of this embodiment shows significant advantages in practical applications, and provides a strong guarantee for the safe and stable operation of the railway traction power supply system.
[0034] In some embodiments of the present application, the distance between the left and right sides of the point where the wear of the contact line recovers to normal wear point does not exceed 10 cm.
[0035] It can be understood that this embodiment, by limiting the distance between the left and right sides of the wear recovery point to normal wear to no more than 10 cm, can more accurately determine the location of the local line change joint point and the breakpoint, thereby improving the accuracy and efficiency of the connection. The optimization of this detail further enhances the practicality and reliability of the breakpoint connection method of the traction power supply contact line of this embodiment. In actual operation, the staff can quickly and accurately find a suitable connection position based on this regulation, which greatly shortens the operation time and ensures the quality of the connection. In addition, this detail processing also reflects the rigor of the details and the in-depth understanding of actual needs of this embodiment. In summary, this embodiment provides an efficient, accurate and reliable solution for the breakpoint connection of the traction power supply contact line through a series of innovative designs and detail optimizations, laying a solid foundation for the safe and stable operation of the railway traction power supply system.
[0036] In some embodiments of the present application, the clamping assembly used for the contact wire during welding is a two-side clamp, and the two-side clamps are in contact with each other when the contact wires are butt-jointed and the length of the welding point exceeds the mold length by an amount equal to that of the mold.
[0037] It can be understood that this embodiment uses clamps on both sides as clamping components for the contact wire during the welding process, thereby achieving precise alignment of the new and old contact wires during docking, and at the same time ensuring that the length of the weld exceeds the length of the mold. This design not only improves the accuracy of welding, but also effectively avoids the problem of insufficient joint strength caused by inconsistent welding lengths. During the welding process, the clamps on both sides are in close contact, providing stable support for the contact wire and ensuring smooth welding. In addition, by accurately controlling the length of the weld exceeding the length of the mold, the strength of the joint after welding is completed is more uniform, further improving the reliability of the connection. This innovative design once again reflects the in-depth thinking and meticulous planning of this embodiment on the breakpoint connection method of the traction power supply contact wire, and provides a strong guarantee for the safe and stable operation of the railway traction power supply system.
[0038] In some embodiments of the present application, the welding mold adopts a temperature control system, and the temperature control system is configured to stabilize the contact line welding temperature.
[0039] It can be understood that this embodiment achieves precise control of the contact wire welding temperature by equipping the welding mold with an advanced temperature control system. This temperature control system can monitor and adjust the temperature during the welding process in real time to ensure that it fluctuates within the optimal range, thereby effectively improving the welding quality. The stable welding temperature can not only promote the uniform melting of the solder, but also reduce the thermal stress generated during the welding process, and avoid cracks or deformation at the joints due to excessive temperature changes. In addition, the application of the temperature control system has greatly improved the welding efficiency, making the entire connection process faster and more reliable. This innovative temperature control design once again demonstrates the technical advantages and forward-looking thinking of this embodiment in the breakpoint connection method of the traction power supply contact line, and injects new vitality into the safe and stable operation of the railway traction power supply system.
[0040] In some embodiments of the present application, during the contact line grinding process after welding is completed, a polishing tool is used to ensure that there is no protrusion at the joint.
[0041] It is understandable that in the process of polishing the contact wire after welding, this embodiment uses professional polishing tools to finely polish the joint to ensure that the joint is completely smooth without any protruding or recessed parts. This step is crucial because it is directly related to the operating effect of the contact wire after connection in the railway traction power supply system. Through meticulous polishing, minor defects that may occur during the welding process can be eliminated, so that the surface of the joint is completely consistent with that of the original contact wire, thereby avoiding electrical failures or mechanical damage caused by uneven joints. In addition, the use of polishing tools for polishing can further enhance the aesthetics of the joint, making it more in line with the overall requirements of the railway traction power supply system. This innovative polishing process once again reflects the spirit of excellence and pursuit of excellence in the method of connecting the breakpoints of the traction power supply contact wire of this embodiment, and provides another important guarantee for the safe and stable operation of the railway traction power supply system.
[0042] In some embodiments of the present application, after welding is completed, the joint of the contact wire has a smooth appearance and a consistent contact surface.
[0043] It can be understood that this embodiment ensures that the joint of the contact line has a smooth appearance and a consistent contact surface after welding through strict welding technology and subsequent fine grinding. The realization of this result is due to the precise control of the welding process and the high attention to the details of the joint. The smooth appearance and consistent contact surface not only improve the aesthetics of the joint, but more importantly, it ensures that the contact line after connection can operate stably and reliably in the railway traction power supply system. This pursuit of details and control of quality once again proves the professionalism and rigor of this embodiment in the method of connecting the breakpoints of the traction power supply contact line, and lays a solid foundation for the safe and efficient operation of the railway traction power supply system.
[0044] In some embodiments of the present application, during the contact line break point connection process, the welding equipment used includes an automatic pressurization function.
[0045] It is understandable that the welding equipment used in the present embodiment is specially equipped with an automatic pressurization function during the contact line breakpoint connection process. The original intention of the design of this function is to ensure the stability and uniformity of the pressure during the welding process through intelligent automatic pressurization, thereby further improving the strength and reliability of the welded joint. The automatic pressurization function can automatically adjust and apply appropriate pressure according to the characteristics of the welding material and the requirements of the welding process, avoiding the unevenness and errors that may be caused by manual pressurization. This innovative design not only simplifies the welding operation and reduces the requirements for the skill level of the operator, but also significantly improves the quality and stability of the welded joint. In the actual operation of the railway traction power supply system, this high-quality welded joint can better withstand various complex mechanical and environmental conditions, ensuring the safe and reliable operation of the power supply system. This optimization in details once again demonstrates the technical innovation and practical orientation of the present embodiment in the traction power supply contact line breakpoint connection method, and provides strong support for the continuous and stable operation of the railway traction power supply system.
[0046] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.
[0047] The present application is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.
[0048] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.
[0049] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.
[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.
Claims
1. A method for connecting a traction power supply contact line at a breakpoint, characterized in that: include: According to the overall wear of the contact line, confirm the abnormal wear point, and look for the point where the wear returns to normal on both sides with the maximum wear point as the center; Select the area restored to normal wear point as the local line change joint point and break point location, and mark the busbar and contact line; Remove the contact wire to be replaced, remove the old contact wire from the busbar starting from the terminal, and remove the oil and dirt on the busbar; place the contact wire to be replaced to a distance of not less than 1 meter beyond the predetermined breakpoint, and use the excess as a reserve for clamping the contact wire welding mold, and stop laying out the wire; cut the contact wire at the marked point and process the broken section, and fix the contact wire to the busbar; Adjust the welding equipment to below the contact wire mark, prepare a new contact wire, and straighten 50 cm at both ends of the new and old contact wires; install the new contact wire and the old contact wire into the clamping assembly of the welding equipment, so that the contact wires at both ends touch each other in the center of the welding mold, and ensure that the length of the contact wires at both ends beyond the welding mold is equal; perform automatic pressurized welding, and grind the contact wire joints after welding to ensure a smooth transition of the joints; check the size of the groove at the joints to be consistent with the original contact wire to ensure reliable clamping of the busbar jaws.
2. The method for connecting the breakpoint of the traction power supply contact line according to claim 1, characterized in that: The distance between the left and right sides of the contact line where the wear returns to the normal wear point shall not exceed 10 cm.
3. The method for connecting the breakpoint of the traction power supply contact line according to claim 1, characterized in that: The clamping components used for the contact wire during welding are two side clamps, and the two side clamps are in contact with each other when the contact wires are butted and the length of the welding part exceeds the mold length by the same amount.
4. The method for connecting the breakpoint of the traction power supply contact line according to claim 1, characterized in that: The welding mold adopts a temperature control system, and the temperature control system is configured to stabilize the contact line welding temperature.
5. The method for connecting the breakpoint of the traction power supply contact line according to claim 1, characterized in that: During the grinding of the contact line after welding, use a polishing tool to ensure that there are no protrusions at the joint.
6. The method for connecting the breakpoint of the traction power supply contact line according to claim 1, characterized in that: After welding, the joint of the contact wire has a smooth appearance and a consistent contact surface.
7. The method for connecting the breakpoint of the traction power supply contact line according to claim 1, characterized in that: During the contact wire breakpoint connection process, the welding equipment used includes an automatic pressurization function.