Insulating roof inspection method

Abstract

A kind of maintenance method of insulating top cover, insulating top cover includes metal top cover, insulating cover plate being arranged outside metal top cover and pantograph mounting seat being installed on insulating cover plate, first adhesive layer is arranged between the outer periphery of insulating cover plate and metal top cover, and maintenance method includes the following steps: repair procedure of first adhesive layer: (1) utilize cutting glue machine to cut the outer edge portion of first adhesive layer along the four around metal top cover and insulating cover plate bonding, so that the section of old glue strip cut off is a right triangle, before being cut off, the face of one right angle side is attached to the outer surface of metal top cover, and the face of other right angle side is the outer end face of first adhesive layer;(2) utilize glue gun to inject glue to the gap left after cutting and make the adhesive layer extend to the position between the edge outside of insulating cover plate and the outer surface of metal top cover.Using the above scheme, the problem of aging of insulating top cover can be effectively solved, and it is economical and easy to operate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of the maintenance method of the insulated roof of a locomotive, in particular to a maintenance method of the insulated roof. BACKGROUND

[0002] In order to increase the insulation performance of the roof, the insulated cover plate is bonded on the metal roof of the HXD1D and HXD1C plateau locomotive, the material of the insulated cover plate is glass fiber reinforced plastic, and the insulated roof is formed. When the locomotive is used for a period of time, the bonding glue of the insulated cover plate is exposed to the outside, bears the sun and rain, and has a certain aging phenomenon. The steel structure pantograph mounting base is pre-buried on the insulated cover plate due to the need to install the pantograph insulator, and cracks appear at the place of the individual insulated cover plate after the locomotive is used. When the bonding glue is aged and cracked, and the cover plate is damaged, the locomotive insulated roof will leak rain, which will affect the safety of driving. Therefore, when the locomotive enters the C6 repair overhaul process, the insulated roof must be repaired through a certain repair process to avoid the leakage of rain and the safety hazard of driving in the normal use process.

[0003] When the insulated roof leaks rain during the locomotive minor repair process or in the process of section operation, the commonly used repair method is to seal the surface of the place where the rain leaks. This method only temporarily solves the problem of rain leakage, but the problems of glue aging and cover plate cracking are not completely solved and still exist. In addition, there is water accumulation between the insulated cover plate and the metal roof, which accelerates the aging speed of the glue.

[0004] When the locomotive enters the repair process, in order to completely avoid the leakage of the insulated roof, the old insulated roof is removed. Since the bonding glue of the insulated cover plate is relatively large, the separation of the cover plate and the roof needs to use a large pulling device, which is very inconvenient to operate. After the cover plate is removed, the old glue is completely removed and cleaned, a circle of glue is then punched on the metal roof, and then the new insulated cover plate is bonded and fixed on the metal roof according to the requirements. This replacement repair method has poor economy, although it completely solves the quality problem, but the repair cost is very high, and there is the defect of over-repair.

[0005] Therefore, it is necessary to improve. SUMMARY

[0006] The purpose of the present application is to provide a maintenance method of the insulated roof, which can effectively solve the problem of glue aging on the insulated roof, has good economy and is simple to operate. In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0007] The application discloses a maintenance method for an insulating roof cap, which comprises a metal roof cap, an insulating cover plate arranged outside the metal roof cap, and a pantograph mounting seat mounted on the insulating cover plate, wherein a first adhesive layer is arranged between the outer periphery of the insulating cover plate and the metal roof cap, and the maintenance method comprises the following steps: a repairing process for the first adhesive layer, (1) using a cutting machine to cut the outer edge part of the first adhesive layer along the periphery where the metal roof cap is bonded with the insulating cover plate, so that the cross section of the cut old adhesive strip is a right triangle, wherein one of the right angle sides is attached to the outer surface of the metal roof cap, and the other right angle side is the outer end surface of the first adhesive layer; (2) using a glue gun to inject glue into the gap left after cutting and to extend the adhesive layer to the position between the outer periphery of the insulating cover plate and the outer surface of the metal roof cap.

[0008] Further, in step (1), the blade of the cutting machine is cut into the first adhesive layer inwardly along the metal roof cap, and then moves along the edge of the first adhesive layer to cut, and then the blade of the cutting machine is cut into the first adhesive layer inwardly along the oblique angle direction from the intersection of the first adhesive layer and the insulating cover plate, and then moves along the edge of the first adhesive layer to cut, so that the cross section of the cut old adhesive strip is a right triangle; in step (2), shielding work is carried out before injecting glue, the first adhesive tape is attached along the edge of the insulating cover plate, and the second adhesive tape is attached on the outer surface of the metal roof cap close to the edge of the insulating cover plate, the gap left after cutting of the first adhesive layer and the area between the second adhesive tape and the edge of the insulating cover plate jointly form a first glue injection area, and after the glue injection is completed, the first adhesive tape and the second adhesive tape are torn off.

[0009] Further, whether the second adhesive layer exists at the position where the pantograph mounting seat is in contact with the insulating cover plate is checked, if the second adhesive layer exists, the second adhesive layer is cut off and cleaned before being repaired, and if the second adhesive layer does not exist, the repairing is directly carried out.

[0010] Further, the part of the insulating cover plate at the pantograph mounting seat is protruded downwardly, the metal roof cap is provided with a avoiding hole for avoiding the protrusion, and a third adhesive layer is arranged between the insulating cover plate and the metal roof cap along the outer periphery of the avoiding hole; the repairing process for the third adhesive layer comprises the following steps: (1) using a cutting machine to cut the part of the third adhesive layer close to the edge position of the avoiding hole, so that the cross section of the cut old adhesive strip is a right triangle; (2) using a glue gun to inject glue into the gap left after cutting and to extend the adhesive layer to the inner side of the avoiding hole and adhere to the inner side of the insulating cover plate.

[0011] Further, in step (2) of the repairing process of the third adhesive layer, before injecting glue at the third adhesive layer after cutting, shielding work is performed first, the third adhesive tape is attached along the hole wall of the avoiding hole, and the fourth adhesive tape is attached on the inner side of the insulating cover plate near the hole wall of the avoiding hole, the gap left after cutting the third adhesive layer and the area between the fourth adhesive tape and the hole wall of the avoiding hole together form a third injection area, and after the injection is completed, the third adhesive tape and the fourth adhesive tape are torn off.

[0012] Further, before step (1) of the repairing process of the third adhesive layer, it is checked whether there is water stain or rust at the avoiding hole, if there is, the third adhesive layer is drilled through using a drill bit, so that the accumulated water between the insulating cover plate and the metal top cover is discharged.

[0013] Further, before cutting with the cutting machine, the following preliminary steps are further included: cleaning impurities and dust on the insulating top cover; checking whether there is a crack or a crack on the insulating cover plate, if the quality risk is evaluated according to the length, depth and crack state of the crack, it is judged whether it can be repaired and continued to be used, if it cannot be repaired, the insulating cover plate is replaced, if it can be repaired, the insulating cover plate is repaired.

[0014] Further, the repairing method of the insulating cover plate is:

[0015] (1) polishing the crack or defect to eliminate the crack and expose the base material;

[0016] (2) cleaning the repaired part with a cleaning agent, then brushing a layer of resin with a brush, then pasting a layer of fiber cloth, the size of the fiber cloth is cut according to the polishing area, then brushing another layer of resin, then pasting a second layer of fiber cloth, and repeatedly pasting several layers of fiber cloth according to the thickness to be repaired. After the resin is dry, the excess flow is polished flat.

[0017] Further, before the injection step, the surface of the injection site is cleaned, the dust and impurities on the injection site of the insulating cover plate and the metal top cover are cleaned with non-woven fabric, then all the injection sites are cleaned with cleaning agent 3350, all the cleaning is done in one direction, and the cleaning agent is dried for at least 10 minutes.

[0018] Further, after the surface cleaning process, the metal top cover and the insulating cover plate at the cutting site are checked; if the metal top cover or the insulating cover plate is not covered with adhesive layer, the red epoxy primer or base material is exposed, then the corresponding area is needed to be coated with a thin layer of the mixed primer 5402 on the surface of the injection site in one direction with a sponge, and then naturally dried for at least 10 minutes, and then the injection work is performed; after the injection is completed, the glue is scraped in one direction with a scraping plate, and the new glue is required to be beveled after scraping with the scraper, and finally the surface is smoothed with a brightener and the residual glue is cleaned.

[0019] The aging of the glue of the insulating cover plate is mainly the exposed glue layer, and the above technical scheme avoids the overall disassembly work of the insulating cover plate, and the desired maintenance effect can be achieved by updating a small amount of the outermost glue layer. Greatly reduce the workload, the insulating cover plate is a composite material, the current new cost is very high, a new cover plate needs several ten thousand yuan, and now the repair instead of replacement, the trolley only needs several thousand yuan cost, greatly reduces the maintenance cost, compared with the maintenance method of the whole disassembly of the insulating cover plate, also improves the maintenance efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view of the insulating cover.

[0021] Figure 2 It is a back view of the insulating cover.

[0022] Figure 3 It is a Figure 1 sectional view of A-A in the middle.

[0023] Figure 4 It is a Figure 3 enlarged view of B.

[0024] Figure 5 It is a view after the first glue layer is cut.

[0025] Figure 6 It is a view after the first glue layer is injected.

[0026] Figure 7 It is a Figure 3 enlarged view of C.

[0027] Figure 8 It is a view after the third glue layer is cut.

[0028] Figure 9 It is a view after the third glue layer is injected.

[0029] Figure 10 It is a view after the insulating cover is injected at the pantograph mounting seat position. DETAILED DESCRIPTION

[0030] The present application will be described below in combination with the drawings and specific embodiments.

[0031] For example, Figure 1 , 2, 3, 4, 7, 10, a maintenance method of an insulating roof cover, the insulating roof cover comprising a metal roof cover 1, an insulating cover plate 2 arranged outside the metal roof cover 1, and a pantograph mounting seat 3 mounted on the insulating cover plate 2, in the embodiment, the pantograph mounting seat 3 is embedded in the insulating cover plate 2, a first glue layer 4 is arranged between the outer periphery of the insulating cover plate 2 and the metal roof cover 1, a second glue layer 5 (there is also a case without the second glue layer 5) is arranged between the four peripheral edge positions of the pantograph mounting seat 3 and the insulating cover plate 2, the part of the insulating cover plate 2 at the pantograph mounting seat 3 is downwardly protruding 6, the metal roof cover 1 is provided with an avoiding hole 7 avoiding the protrusion 6, and a third glue layer 8 is arranged between the insulating cover plate 2 and the metal roof cover along the outer periphery of the avoiding hole 7.

[0032] The maintenance method comprises the following steps:

[0033] (1) Clean the impurities and dust on the insulating roof cover; check whether there is a crack and a crack damage on the insulating cover plate 2, if the quality risk is evaluated according to the length, depth and crack damage state of the crack, whether it can be repaired and continued to be used is judged, if it cannot be repaired, the insulating cover plate 2 is replaced, if it can be repaired, the insulating cover plate 2 is repaired.

[0034] The repair method of the insulating cover plate 2 is: ① polishing the crack or the damaged part to eliminate the crack and expose the base material; ② cleaning the part to be repaired with a cleaning agent, then brushing a layer of resin with a brush, then pasting a layer of fiber cloth, the size of the fiber cloth is cut according to the polishing area, then brushing a layer of resin, then pasting a second layer of fiber cloth, and repeatedly pasting several layers of fiber cloth according to the thickness to be repaired. After the resin is dry, the excess flow is polished flat.

[0035] (2) As shown in Figure 4 , 5 , a cutting glue machine (FSC1.7Q type electric cutting glue machine matched with a serrated special-shaped blade) is used to cut the outer edge part of the first glue layer 4 along the four peripheries of the metal roof cover 1 and the insulating cover plate 2, so that the cross section of the cut old glue strip is a right triangle, before being cut, one of the right angle edges is in contact with the outer surface of the metal roof cover 1, and the other right angle edge is in contact with the outer end surface of the first glue layer 4. The specific cutting method is: the blade of the glue machine is cut into the first glue layer 4 inwardly along the metal roof cover 1, the cutting depth is about 10 mm, then the blade is moved along the edge of the first glue layer 4 to cut, then the blade of the cutting glue machine is cut into the first glue layer 4 inwardly along the oblique angle, then the blade is moved along the edge of the first glue layer 4 to cut, so that the cross section of the cut old glue strip is a right triangle. Finally, the old glue strip is taken out with the help of a craft knife.

[0036] (3) As shown in Figure 7 , 8As shown, check whether there is water stain or rust at the inspection avoidance hole 7, if there is, use a drill bit to drill through the third adhesive layer 8, so that the accumulated water between the insulating cover plate 2 and the metal top cover 1 is discharged.

[0037] (4) Use a rubber cutting machine to cut the rubber at the edge of the third adhesive layer 8 near the avoidance hole 7, so that the cross section of the cut old rubber strip is a right triangle;

[0038] (5) Check whether there is a second adhesive layer 5 at the contact between the pantograph mounting seat 3 and the insulating cover plate 2, if there is, first cut off the second adhesive layer 5 and clean it up.

[0039] Next, use an angle grinder to polish the pantograph mounting seat 3 around and extend about 15mm outward, until the insulating cover plate 2 exposes the base material, and use a dust collector to clean up the dust and impurities.

[0040] (6) Check the gaps left after cutting the rubber, if there are cut rubber strips that are not cleaned up, use a craft knife to clean them out to avoid affecting the subsequent gluing effect.

[0041] (7) As shown in Figure 5 , 6 , along the edge of the insulating cover plate 2, paste the first adhesive tape 9, on the outer side of the metal top cover 1, paste the second adhesive tape 10 about 15mm away from the edge of the insulating cover plate 2, the gap left after cutting the first adhesive layer 4 and the area between the second adhesive tape 10 and the edge of the insulating cover plate 2 together form the first glue injection area; as shown in Figure 8 , 9 , along the hole wall of the avoidance hole 7, paste the third adhesive tape 11, on the inner side of the insulating cover plate 2, paste the fourth adhesive tape 12 about 15mm away from the hole wall of the avoidance hole 7, the gap left after cutting the third adhesive layer 8 and the area between the fourth adhesive tape 12 and the hole wall of the avoidance hole 7 together form the third glue injection area. As shown in Figure 10 , along the top edge of the pantograph mounting seat 3, paste the fifth adhesive tape 20, along the outer periphery of the fifth adhesive tape 20, paste the sixth adhesive tape 21, the sixth adhesive tape 21 is covered on the top surface of the insulating cover plate 2, the second glue injection area is formed between the fifth adhesive tape 20 and the sixth adhesive tape 21.

[0042] (8) Clean the surface of the parts to be injected, first use non-woven fabric to clean the dust and impurities on the insulating cover plate 2 and the metal top cover 1 to be injected, then use cleaning agent 3350 to clean all the parts to be injected, all cleaning is done in one direction, and the cleaning agent is dried for at least 10 minutes.

[0043] (9) Check the metal top cover 1 and the insulating cover plate 2 at the cutting glue position; if the metal top cover 1 or the insulating cover plate 2 is not covered by the glue layer and the red epoxy primer or the base material is exposed, then a thin layer of the bottom coating 5402 is evenly coated on the surface of the injection glue part in one direction by using a sponge, and the coating is naturally dried for at least 10 minutes.

[0044] (10) Glue injection, the first glue layer 4 and the third glue layer 8 after cutting glue are injected. As shown in Figure 5 , 6 , when the first glue layer 4 is injected, the gap left after the first glue layer 4 is cut is injected by using a glue gun, and the glue layer is extended to the position between the edge outside of the insulating cover plate 2 and the outer surface of the metal top cover 1, and specifically, the glue layer is close to the edge position of the second adhesive tape 10 for shielding; as shown in Figure 8 , 9 , when the third glue layer 8 is injected, the gap left after the third glue layer 8 is cut is injected by using a glue gun, and the glue layer is extended to the position close to the fourth adhesive tape 12 inside the hole of the avoiding hole 7 and attached to the inside of the insulating cover plate 2. As shown in Figure 10 , the second injection area is injected to form a new second glue layer 5

[0045] (11) After the glue injection is completed, the glue is scraped in one direction by using a glue scraping plate, the new glue is required to be beveled after being scraped by the scraper, so as to play a sealing and strengthening effect, then the surface is smoothed by using a brightener, and finally all the adhesive tapes for shielding are torn off, and the residual glue is cleaned.

[0046] By using the traditional process, although the insulating cover plate 2 also needs to be cut, because the width of the adhesive used for bonding is at least 55 mm, the strength of the adhesive used is strong, the connection between the insulating cover plate 2 and the metal top cover 1 cannot be completely cut off by using an electric glue cutting machine, and the cover plate can only be partially cut and separated by using a large pulling device, so the disassembly is very laborious and the workload is large,

[0047] The glue aging of the insulating cover plate 2 is mainly the glue layer exposed outside, by using the above technical scheme, the overall disassembly work of the insulating cover plate 2 is avoided, and by updating a small amount of the outermost glue layer, the desired maintenance effect can be achieved, the workload is greatly reduced, and the problems of glue aging, cracks of the insulating cover plate 2 and rain leakage of the insulating top cover can be effectively handled.

[0048] The insulating cover plate 2 is a composite material, and the current new cost is extremely high, and several ten thousand yuan is needed for a new cover plate, and now the repair instead of replacement, the trolley only needs several thousand yuan, which greatly reduces the maintenance cost, and compared with the maintenance method of completely disassembling the insulating cover plate 2 and completely cleaning and coating the glue, the maintenance method of the present application also significantly improves the efficiency.

[0049] The above merely describes the preferred embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the scope of claims of the present application.

Claims

1. A method of inspecting an insulated roof, characterized by: The insulating roof cover comprises a metal roof cover, an insulating cover plate arranged outside the metal roof cover, and a pantograph mounting seat mounted on the insulating cover plate, a first glue layer is arranged between the outer periphery of the insulating cover plate and the metal roof cover, and the maintenance method comprises the following steps: Before cutting the glue by using the glue cutter, the following preliminary steps are further included: cleaning the impurities and dust on the insulating roof cover; checking whether there is a crack and a crack damage on the insulating cover plate, if the quality risk is evaluated according to the length, depth and crack damage state of the crack, whether it can be repaired and continued to be used is judged, if it cannot be repaired, the insulating cover plate is replaced, and if it can be repaired, the insulating cover plate is repaired; The repair method of the insulating cover plate is as follows: (1) polishing the crack or the damaged part to eliminate the crack and expose the base material; (2) cleaning the part to be repaired by using a cleaning agent, then brushing a layer of resin by using a brush, then pasting a layer of fiber cloth, the size of the fiber cloth is cut according to the polishing area, then brushing a layer of resin, then pasting a second layer of fiber cloth, repeatedly pasting several layers of fiber cloth according to the thickness to be repaired, and polishing the excess flow after the resin is dry; The repair process of the first glue layer is as follows: (1) using a glue cutter to cut the outer edge part of the first glue layer along the four peripheries of the metal roof cover and the insulating cover plate, so that the cross section of the cut old glue strip is a right triangle, and the face where one right angle edge of the old glue strip is located is attached to the outer surface of the metal roof cover before the old glue strip is cut, and the face where the other right angle edge is located is the outer end face of the first glue layer; In step (1), the blade of the glue cutter is cut into the first glue layer inward along the metal roof cover, and then moves along the edge of the first glue layer to cut the glue, and then the blade of the glue cutter is cut into the first glue layer inward along the oblique angle, and then moves along the edge of the first glue layer to cut the glue, so that the cross section of the cut old glue strip is a right triangle; (2) using a glue gun to inject glue into the gap left after cutting the glue and make the glue layer extend to the position between the outer side of the insulating cover plate and the outer surface of the metal roof cover; In step (2), shielding is performed before glue injection, a first adhesive tape is attached along the edge of the insulating cover plate, and a second adhesive tape is attached on the outer side of the metal roof cover close to the edge of the insulating cover plate, the gap left after cutting the first glue layer and the area between the second adhesive tape and the edge of the insulating cover plate form a first glue injection area, and the first adhesive tape and the second adhesive tape are torn off after the glue injection is completed; The part of the insulating cover plate at the pantograph mounting seat is protruded downward, the metal roof cover is provided with a avoiding hole for avoiding the protrusion, and a third glue layer is arranged between the insulating cover plate and the metal roof cover along the outer periphery of the avoiding hole; The repair process of the third glue layer is as follows: Before step (1) of the repair process of the third glue layer, it is checked whether there is water stain or rust at the avoiding hole, if there is, the third glue layer is drilled through by using a drill bit, so that the accumulated water between the insulating cover plate and the metal roof cover is drained; (1) using a glue cutter to cut the part of the third glue layer close to the edge position of the avoiding hole, so that the cross section of the cut old glue strip is a right triangle; (2) The gap left after cutting the third adhesive layer is injected with adhesive by using a glue gun, and the adhesive layer is extended to the inner side of the avoiding hole and attached to the inner side of the insulating cover plate; In step (2) of the repairing process of the third adhesive layer, before injecting the third adhesive layer after cutting, shielding is performed, the third adhesive tape is attached along the hole wall of the avoiding hole, the fourth adhesive tape is attached on the inner side of the insulating cover plate near the hole wall of the avoiding hole, the gap left after cutting the third adhesive layer and the area between the fourth adhesive tape and the hole wall of the avoiding hole form a third injection area together, and after the injection is completed, the third adhesive tape and the fourth adhesive tape are torn off.

2. The method of claim 1, wherein: Check whether the second adhesive layer exists at the contact between the four sides of the pantograph mounting seat and the insulating cover plate, if it exists, cut off the second adhesive layer and clean it up before repairing; if it does not exist, directly repair.

3. The method of claim 1 or 2, wherein: Before the injection step, clean the surface of the part to be injected, first use non-woven fabric to clean the dust and impurities on the insulating cover plate and the metal top cover to be injected, then use cleaning agent to clean all the parts to be injected, all cleaning is done in one direction, and the cleaning agent is dried for at least 10 minutes.

4. The method of claim 3, wherein: After the surface cleaning process, check the metal top cover and the insulating cover plate at the cutting position; if the metal top cover or the insulating cover plate is not covered with adhesive layer, the red epoxy primer or substrate is exposed, then the corresponding area needs to be coated with a thin layer of the shaken primer on the surface of the part to be injected in one direction and evenly by using a sponge, then naturally dry for at least 10 minutes, and then perform the injection operation; After the injection is completed, scrape the glue in one direction by using a scraper, the new glue is required to be beveled after scraping by the scraper, and finally use a brightener to smooth the surface and clean the residual glue.

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