Rigid contact net polishing process and system

Abstract

The rigid contact net grinding process comprises a grinding device and auxiliary equipment, the grinding device adopts a lithium battery angle grinder and is provided with a coarse fiber wheel and a fine fiber wheel, and the coarse fiber wheel and the fine fiber wheel are used for coarse grinding and fine polishing respectively; the auxiliary equipment comprises an insulating ladder vehicle, an electroscope, a grounding wire, goggles, a mask, earplugs, a safety belt and the like; the angle grinder is powered by the batteries, each group of ladder truck batteries is provided with two batteries which are installed in use, two batteries are standby, and the two batteries are charged at a platform; an operator stands on the insulating ladder vehicle to carry out high-altitude operation; the carbon film test block is used for comparing the surface smoothness of the contact line. According to the rigid contact net polishing process and system, by installing the polishing device and auxiliary equipment, the polishing quality is remarkably improved conveniently, step-by-step polishing is conducted through the thick fiber wheel and the thin fiber wheel, the surface of a contact line is smooth and free of burrs, the carbon film test block is used for comparing the surface smoothness of the contact line, and the polishing efficiency is high during use.

Description

Technical Field

[0001] This invention belongs to the field of rigid contact wire processing technology for subways, and particularly relates to a rigid contact wire grinding process and system. Background Technology

[0002] With the rapid development of urban rail transit, the contact wire, as a key component of the traction power supply system, directly affects the pantograph-catenary relationship and power supply safety. After the opening of Taiyuan Metro Line 2, abnormal wear of the contact wire was found, with an average wear width of 10 mm and a wear rate as high as 6.739 mm per square meter per 10,000 pantographs. Traditional grinding methods lack standardized and process-oriented implementation plans, resulting in low grinding efficiency, unstable quality, and safety hazards. There is an urgent need for an efficient and safe remediation plan.

[0003] The current rigid contact wire grinding process has the following problems when applied: 1. In actual use, the traditional rigid contact wire grinding process of the subway usually causes abnormal wear of the contact wire due to long-term friction with the pantograph, resulting in defects such as burrs, rough spots, etc. This leads to a shortened service life of the contact wire, a deterioration of the pantograph-contact wire relationship, and even short circuit grounding faults, which seriously affect the safety of subway operation. The grinding effect depends on the experience of the workers and the quality is unstable. Therefore, the grinding efficiency is slow when in use. 2. In most applications of rigid contact wire grinding processes, traditional grinding methods lack standardized and process-oriented implementation plans, resulting in low grinding efficiency, unstable quality, and inadequate safety measures. They also pose multiple risks, such as working at heights and electrical work. Furthermore, the grinding process cannot be systematically recorded and fed back, making it difficult to achieve quality traceability and continuous improvement. Therefore, the safety risks are relatively high when applying these methods. Summary of the Invention

[0004] To address the shortcomings of the prior art, this invention provides a rigid contact wire grinding process and system to solve the technical problems mentioned in the prior art.

[0005] To achieve the above objectives, the specific technical solution of the present invention is as follows: A rigid contact wire grinding process and system, comprising a grinding device and auxiliary equipment. The grinding device includes a lithium-ion battery-powered angle grinder equipped with coarse and fine fiber wheels for coarse grinding and fine polishing, respectively. The auxiliary equipment includes an insulated ladder cart, voltage detector, grounding wire, goggles, mask, earplugs, safety belt, etc. The angle grinder is powered by a battery, with each ladder cart equipped with two batteries in use, two as spares, and two charging at the platform. Operators stand on the insulated ladder cart to perform high-altitude operations. Carbon film test blocks are used to compare the surface smoothness of the contact wire.

[0006] As a further preferred embodiment of the present invention, the quality control tools include carbon film test blocks, polishing test blocks, scouring pads, sandpaper, etc.

[0007] As a further preferred embodiment of the present invention, the personnel configuration includes a construction supervisor, safety officer, support personnel, and workers at height.

[0008] The process flow includes the following: S1, Pre-construction preparation: First, check the tools, conduct safety briefings, and verify the grounding of the power supply; place the ladder truck in place, with a pushing speed ≤5km / h; S2, Formal Construction: Then, use coarse sander in front and fine sander behind, and grind along the direction of travel. Prioritize ensuring the coarse fiber wheel works continuously. Test coaxiality before proceeding with the operation. S3, Polishing and Grinding: Use a coarse fiber wheel to initially grind away burrs and flash, then use a fine fiber wheel for polishing. After grinding, wipe with a scouring pad for inspection and use a carbon film test block for comparison. S4, Clean up equipment: Rework non-compliant areas until they meet the standards. When construction is completed, remove protective measures, take inventory of tools, and hold a post-shift meeting.

[0009] As a further preferred embodiment of the present invention, in step S1, the staff will conduct multiple inventory checks on the required equipment to avoid situations where the equipment cannot function during subsequent use, thereby affecting subsequent work efficiency.

[0010] As a further preferred embodiment of the present invention, in step S2, it is necessary to clearly understand the position of the coarse and fine sand tools during polishing to avoid errors that could affect polishing efficiency. After polishing, the tools should be wiped clean with a scouring pad.

[0011] The rigid contact wire grinding process and system of the present invention have the following advantages: 1. This rigid contact wire grinding process and system, by installing a grinding device and auxiliary equipment, can significantly improve the grinding quality. Furthermore, by grinding in stages with coarse and fine fiber wheels, the surface of the contact wire is smooth and burr-free. A carbon film test block is used to compare the surface smoothness of the contact wire. The grinding efficiency is relatively fast during use. 2. This rigid contact wire grinding process and system, by installing a grinding device and using a lithium-ion angle grinder, as well as auxiliary equipment including an insulated ladder, voltage detector, grounding wire, goggles, mask, earplugs, safety belt, etc., and with the use of other equipment, the standardized process and specialized equipment work together to improve grinding efficiency by about 40%. Furthermore, the comprehensive electrical and high-altitude operation protection measures prevent safety accidents. Its process is standardized and streamlined, and it is suitable for various rail transit contact wire grinding scenarios, with reduced safety risks during application. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall operation steps of the present invention; Figure 2 This is a schematic diagram of the single polishing machine operation structure of the present invention; Figure 3 This is a schematic diagram of the operating structure of the dual polishing machine of the present invention; Figure 4 This is a schematic diagram of the planar structure of the polishing machine of the present invention. Detailed Implementation

[0014] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the embodiments of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0015] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0016] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0017] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0018] The following disclosure provides many different implementations or examples for carrying out different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0019] To better understand the purpose, structure, and function of this invention, the following detailed description of a rigid contact wire grinding process and system is provided in conjunction with the accompanying drawings.

[0020] like Figure 1-4 As shown, the present invention discloses a rigid contact wire grinding process and system, including a grinding device and auxiliary equipment. The grinding device includes a lithium-ion battery-powered angle grinder equipped with coarse and fine fiber wheels for coarse grinding and fine polishing, respectively. The auxiliary equipment includes an insulated ladder trolley, voltage detector, grounding wire, goggles, mask, earplugs, safety belt, etc. The angle grinder is powered by batteries, with two batteries installed in use, two as spares, and two charging at the platform for each ladder trolley. Operators stand on the insulated ladder trolley to perform high-altitude operations. Carbon film test blocks are used to compare the surface smoothness of the contact wire. Quality control tools include carbon film test blocks, grinding test blocks, scouring pads, sandpaper, etc. Personnel configuration includes a construction supervisor, safety officer, support personnel, and high-altitude workers.

[0021] The process flow includes the following: S1, Pre-construction preparation: First, check the tools, conduct safety briefings, and verify the grounding of the power supply; place the ladder truck in place, with a pushing speed ≤5km / h; S2, Formal Construction: Then, use coarse sander in front and fine sander behind, and grind along the direction of travel. Prioritize ensuring the coarse fiber wheel works continuously. Test coaxiality before proceeding with the operation. S3, Polishing and Grinding: Use a coarse fiber wheel to initially grind away burrs and flash, then use a fine fiber wheel for polishing. After grinding, wipe with a scouring pad for inspection and use a carbon film test block for comparison. S4, Clean up equipment: Rework non-compliant areas until they meet the standards. When construction is completed, remove protective measures, take inventory of tools, and hold a post-shift meeting.

[0022] As a further preferred embodiment of the present invention, in step S1, the staff will conduct multiple inventory checks on the required equipment to avoid situations where the equipment cannot function during subsequent use, thereby affecting subsequent work efficiency.

[0023] As a further preferred embodiment of the present invention, in step S2, it is necessary to clearly understand the position of the coarse and fine sand tools during polishing to avoid errors that could affect polishing efficiency. After polishing, the tools should be wiped clean with a scouring pad.

[0024] The working principle of this rigid contact wire grinding process and system is as follows: When applying this device, to address issues such as grinding effectiveness relying on worker experience, unstable quality, lack of standardized processes, low efficiency, inadequate safety measures, multiple risks associated with high-altitude and electrical work, and the inability to systematically record and provide feedback on the grinding process, hindering quality traceability and continuous improvement, a grinding device and auxiliary equipment are used. Before work begins, workers prepare the necessary tools and materials. The grinding device uses a lithium-ion battery-powered angle grinder equipped with coarse and fine fiber wheels for coarse grinding and fine polishing, respectively. Auxiliary equipment includes an insulated ladder, voltage detector, grounding wire, goggles, mask, earplugs, and safety belt. The angle grinder is battery-powered; each ladder has two batteries installed for use, two as spares, and two charging at the platform. Next, operators perform high-altitude work from the insulated ladder. Carbon film test blocks are used to compare the surface smoothness of the contact wire. Then, a pre-shift meeting is held to explain operational precautions. Those attending the meeting include construction personnel... After the supervisor, safety officer, support personnel, and workers at height are in place, the work can proceed with electrical testing, grounding, and erecting the ladder truck. Then, workers use two handheld grinders, one with coarse abrasive and the other with fine abrasive, to grind along the direction of travel, prioritizing the continuous operation of the coarse fiber wheel. After testing for coaxiality, further work can begin. Because of the step-by-step grinding with coarse and fine fiber wheels, the contact wire surface is smooth and burr-free, significantly improving grinding quality. One person then remains at the back to wipe and inspect the surface. The coarse fiber wheel is used for initial grinding of burrs and flash, while the fine fiber wheel performs polishing. After grinding, the surface is wiped with a scouring pad for inspection, and a carbon film test block is used for comparison. If any unsuitable areas are found, rework is required until the area meets the standards. This standardized process, combined with specialized equipment, increases grinding efficiency by approximately 40%. Furthermore, comprehensive electrical and high-altitude work safety measures are in place to prevent accidents. The standardized and streamlined process is applicable to various rail transit contact wire grinding scenarios. Finally, after construction is completed, the protective measures are removed, the tools used are inventoried, and a post-shift meeting is held.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rigid catenary grinding process and system, comprising a grinding device and auxiliary equipment, characterized in that: The polishing device includes a lithium battery angle grinder equipped with coarse and fine fiber wheels for rough grinding and fine polishing respectively; the auxiliary equipment includes an insulating ladder car, an electroscope, a grounding wire, goggles, a mask, earplugs, a safety belt, etc.; the angle grinder is powered by a battery, and each set of ladder car battery is equipped with 2 installed batteries, 2 standby batteries, and 2 charging batteries on the platform; the operator stands on the insulating ladder car to perform high-altitude work; the carbon film test block is used to compare the surface finish of the contact line.

2. A rigid catenary grinding process and system according to claim 1, characterized in that: The quality control tools include carbon film test blocks, polishing test blocks, scouring pads, sandpaper, etc.

3. A rigid catenary grinding process and system as claimed in claim 1, characterized in that: The personnel configuration includes a construction supervisor, a safety officer, a pushing and supporting personnel, a high-altitude operation personnel, etc.

4. The rigid catenary grinding process and system according to any of claims 1-3, characterized in that, The process flow includes the following: S1, preparation before construction: first, count the tools, conduct safety briefing, and check the electricity and grounding; the ladder car is in place, and the pushing and supporting speed is ≤5 km / h; S2, formal construction: then, polish along the direction of the trolley with coarse sand in front and fine sand behind, preferentially ensure the continuous work of the coarse fiber wheel, and then work after the test coaxial; S3, polishing and grinding work: polish the burrs and burrs with the coarse fiber wheel, and polish with the fine fiber wheel; after polishing, use a scouring pad to wipe and check, and use a carbon film test block for comparison; S4, clean up equipment: rework unqualified areas until the standard is met, remove the protection when the construction is completed, count the tools, and hold a post-construction meeting.

5. The rigid catenary grinding process and system of claim 4, wherein, In step S1, the worker counts the required equipment multiple times to avoid the situation that the equipment cannot work in the subsequent use process, thereby affecting the subsequent work efficiency.

6. The rigid catenary grinding process and system of claim 4, wherein, In step S2, the position of the coarse sand and fine sand tools during polishing needs to be clearly understood to avoid errors and affect the polishing efficiency. After polishing, a scouring pad is needed to wipe clean.

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