A method for adjusting the sealing of locomotive and rolling stock doors

Abstract

This invention provides a method for adjusting the sealing of locomotive and rolling stock doors, relating to the field of locomotive and rolling stock maintenance technology. It is used to adjust the sealing performance between the doors and door frames on the locomotive and rolling stock body. The doors and door frames are sealed together by a sealing element and locked together by a door lock mechanism. The sealing adjustment method includes: inspecting the doors, door frames, door lock mechanism, and the sealing element between the doors and door frames; if the doors and / or door frames experience local deformation, obtaining the amount of local deformation and filling the deformation location with a support structure according to the amount of local deformation; if the wear of the door lock mechanism exceeds a set threshold, replacing the door lock mechanism; if the sealing element between the doors and door frames and the gap between the doors and door frames are not compatible, determining the size and elasticity of the sealing element based on the gap between the doors and door frames to select a new sealing element for replacement. This sealing adjustment method can be implemented and improved in a targeted manner according to the types of door gaps. After debugging, it has strong adaptability and a low failure rate in complex structures, changing environments, and long-distance operation.

Description

Technical Field

[0001] This invention belongs to the field of locomotive and rolling stock maintenance technology, and more specifically, relates to a method for adjusting the sealing of locomotive and rolling stock doors. Background Technology

[0002] With the development of locomotive and rolling stock technology, train doors, as a crucial component of vehicles, play a vital role in ensuring the safety and comfort of drivers and passengers. However, due to various stresses experienced during long-term use, minor deformations of the vehicle body can lead to deformations in the doors and door frames, or improper use can cause localized deformation of the doors. This can result in doors not closing properly, leading to air or water leaks and reducing the driver's and passenger's experience. In severe cases, it can even cause mechanical failure of the locomotive or rolling stock.

[0003] The current state of technology:

[0004] In the existing technology, when locomotives and rolling stock are being prepared and maintained, the problem of poor door sealing is usually addressed by empirical adjustment methods, such as simply applying sealant to the gaps or sticking on sealing strips. Although these methods are easy to implement, they are not adaptable to the complex door structure, the changing operating environment, and long-distance operation. They often cannot completely and effectively solve the problem, resulting in a high failure rate. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a method for adjusting the sealing of locomotive and rolling stock doors. This method solves the problem that, in the prior art mentioned above, the methods for dealing with poor sealing of locomotive and rolling stock doors are mostly based on empirical adjustments, applying sealant, or pasting sealing strips. Although these methods are easy to implement, they have poor adaptability and high failure rate in complex structures, changing environments, and long-distance operation.

[0006] To achieve the above objectives, the present invention provides a method for adjusting the sealing performance of a locomotive door, used to adjust the sealing performance between the door and the door frame on the locomotive body, wherein the door and the door frame are sealed together by a sealing element, and the door and the door frame are locked together by a door locking mechanism. The sealing adjustment method includes:

[0007] Inspect the doors, door frames, door lock mechanisms, and seals between the doors and door frames;

[0008] If the door and / or door frame are deformed, repair the door and / or door frame. For localized deformation, obtain the amount of localized deformation and fill the deformed location with a support structure according to the amount of localized deformation.

[0009] If the wear of the door lock mechanism exceeds the set threshold, replace the door lock mechanism with a new one.

[0010] If the seal between the door and the door frame and the gap between the door and the door frame are not compatible, the size and elasticity of the seal should be determined according to the gap between the door and the door frame in order to select a new seal for replacement.

[0011] Preferably, the supporting structure includes multiple pads, which are stacked on top of each other.

[0012] Preferably, the gasket has an opening, and the supporting structure further includes bolts that pass through multiple gaskets and are threadedly connected to the local deformation location.

[0013] Preferably, if the door and / or door frame are deformed, the door and / or door frame are repaired. For local deformation, the local deformation amount is obtained, and a support structure is filled at the local deformation location according to the local deformation amount. This includes: if the door and / or door frame are deformed, leveling and welding are used for repair. For local deformation, the local deformation amount is obtained, and a certain number of shims are filled at the local deformation location according to the local deformation amount.

[0014] Preferably, the door lock mechanism includes a latch and a stop, the latch and the stop being respectively installed on the vehicle door and the door frame.

[0015] Preferably, replacing the door lock mechanism if the wear of the door lock mechanism exceeds a set threshold includes replacing the lock tongue if the wear of the bolt exceeds a set threshold.

[0016] Preferably, replacing the door lock mechanism if the wear of the door lock mechanism exceeds a set threshold includes: if the wear of the lock tongue does not exceed the set threshold, but the lock stop shows wear, then replacing the lock stop with a new one.

[0017] Preferably, if the wear of the bolt does not exceed a set threshold, then replacing the lock stop includes: if the wear of the bolt does not exceed the set threshold, then obtaining the wear of the bolt and the wear of the lock stop, manufacturing a new lock stop, and using the size of the worn lock stop as a reference, superimposing the cumulative wear of the bolt and the lock stop as a compensation amount.

[0018] Preferably, if the seal between the door and the door frame and the gap between the door and the door frame are not compatible, then determining the size and elasticity of the seal based on the gap between the door and the door frame to select a new seal for replacement includes: if the seal between the door and the door frame and the gap between the door and the door frame are not compatible, then determining the elasticity of the seal and the size and thickness of the contact portion of the seal based on the gap between the door and the door frame to select a new seal for replacement.

[0019] Preferably, the seal is elliptical in shape.

[0020] This invention provides a method for adjusting the sealing of locomotive and rolling stock doors. Its advantages are as follows: Poor door sealing in locomotives and rolling stock can be categorized into three situations based on actual problems. The first situation is localized deformation of the door and door frame, resulting in an increased gap between the door and the frame. The second situation is wear on the door lock mechanism, leading to incomplete door locking and an increased gap between the door and the frame. The third situation is defects in the door seals, resulting in poor sealing performance and thus air and water leakage during operation. To solve the first situation, this sealing adjustment method can adjust the gap between the door and the door frame to a reasonable range by filling and supporting structures at the locally deformed fasteners. To solve the second situation, this sealing adjustment method can manage the door lock mechanism during maintenance; when wear exceeds a set threshold, the door lock mechanism can be replaced to ensure normal operation. To solve the third situation, this sealing adjustment method can measure the gap between the door and the door frame during maintenance and replacement, and adjust the size and elasticity of the seals to compensate for the door gap and achieve a sealing effect.

[0021] This sealing adjustment method can be improved in a targeted manner according to the types of gaps that occur in the doors. After debugging, it has strong adaptability to complex structures, changing environments and long-distance operation, and has a low failure rate.

[0022] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0023] The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of exemplary embodiments of the invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the invention.

[0024] Figure 1 A flowchart of a locomotive and rolling stock door sealing adjustment method according to an embodiment of the present invention is shown;

[0025] Figure 2 A schematic diagram of the deformed door side view structure is shown;

[0026] Figure 3 A schematic diagram of the gasket structure is shown;

[0027] Figure 4 A schematic diagram of the adjusted door side view structure is shown;

[0028] Figure 5 A schematic diagram of the wear measurement structure of the latch is shown;

[0029] Figure 6 A schematic diagram of the wear amount structure of the lock stop is shown;

[0030] Figure 7A schematic diagram of the compensation structure for the locking stop is shown;

[0031] Figure 8 A schematic diagram of the original sealing element structure is shown;

[0032] Figure 9 A schematic diagram of the modified seal structure is shown.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Vehicle body; 2. Door frame; 3. Gasket; 4. Bolt; 5. Gap; 6. Door; 7. Seal; 8. Lock tongue; 9. Lock stop. Detailed Implementation

[0035] Preferred embodiments of the invention will now be described in more detail. While preferred embodiments of the invention are described below, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0036] like Figure 1 As shown, the present invention provides a method for adjusting the sealing performance of a locomotive door, used to adjust the sealing performance between a door 6 and a door frame 2 on the body 1 of a locomotive. The door 6 and the door frame 2 are sealed together by a sealing element 7, and the door and the door frame are locked together by a door lock mechanism. The sealing adjustment method includes:

[0037] Inspect the door 6, door frame 2, door lock mechanism, and seal 7 between door 6 and door frame 2;

[0038] If the door 6 and / or the door frame 2 are deformed, the door 6 and / or the door frame 2 shall be repaired. For local deformation, the amount of local deformation shall be obtained, and a support structure shall be filled at the local deformation location according to the amount of local deformation.

[0039] If the wear of the door lock mechanism exceeds the set threshold, replace the door lock mechanism with a new one.

[0040] If the seal 7 between the door 6 and the door frame 2 and the gap 5 between the door 6 and the door frame 2 are not compatible, the size and elasticity of the seal 7 shall be determined according to the gap 5 between the door 6 and the door frame 2, so as to select a new seal 7 for replacement.

[0041] Specifically, to address the problem that existing methods for handling poor sealing of locomotive and rolling stock doors often involve empirical adjustments, applying sealant, or attaching sealing strips, while these methods are easy to implement, they suffer from poor adaptability and high failure rates in complex structures, changing environments, and long-distance operation. This invention provides a method for adjusting the sealing of locomotive and rolling stock doors. Poor sealing of locomotive and rolling stock doors 6 can be categorized into three situations based on actual problems: the first situation is localized deformation of the door 6 and door frame 2, resulting in a larger gap between the door 6 and door frame 2; the second situation is wear on the door lock mechanism causing the door 6 to not lock properly, further increasing the gap between the door 6 and door frame 2; and the third situation is defects in the door seal 7 leading to poor sealing performance, resulting in air and water leakage during operation. To address the first scenario, this sealing adjustment method can adjust the gap 5 between the door 6 and the door frame 2 to a reasonable range by filling and supporting the structure at the localized deformation and fastening points. To address the second scenario, this sealing adjustment method can manage the door lock mechanism during maintenance operations, replacing it when wear exceeds a set threshold to ensure normal operation. To address the third scenario, this sealing adjustment method can measure the gap between the door 6 and the door frame 2 during maintenance and replacement, changing the size and elasticity of the seal 7 to compensate for the gap in the door 6 and achieve a sealing effect.

[0042] This sealing adjustment method can be improved in a targeted manner according to the types of gaps that occur in the door 6. After debugging, it has strong adaptability to complex structures, changing environments and long-distance operation, and has a low failure rate.

[0043] During specific maintenance processes, due to the process-based management of locomotives and rolling stock, some internal structural problems with the doors of certain locomotives and rolling stock cannot be completely resolved at lower-level maintenance stages. These problems can be addressed and improved using the methods mentioned above. Simultaneously, the quality issues are recorded in the vehicle information, and further repairs and improvements are made using the aforementioned sealing adjustment methods during subsequent higher-level maintenance processes. This completely and fundamentally resolves the issues of air and water leakage during operation.

[0044] like Figures 2-4 As shown, preferably, the supporting structure includes multiple pads 3, which are stacked together.

[0045] Specifically, at the point of localized deformation and tightening, the gap between the door 6 and the door frame 2 can be adjusted to a reasonable range by increasing the number of shims 3.

[0046] Preferably, the gasket 3 has an opening, and the supporting structure further includes a bolt 4, which passes through multiple gaskets 3 and is threadedly connected to the local deformation position.

[0047] Specifically, a threaded hole is provided at the location of local deformation, and the bolt 4 is threaded into the threaded hole to fix the gasket 3 at that location.

[0048] Preferably, if the door 6 and / or the door frame 2 are deformed, the door and / or the door frame are repaired. For local deformation, the local deformation amount is obtained, and a support structure is filled at the local deformation location according to the local deformation amount. This includes: if the door 6 and / or the door frame 2 are deformed, leveling and welding are used for repair. For local deformation, the local deformation amount is obtained, and a certain number of shims 3 are filled at the local deformation location according to the local deformation amount.

[0049] Specifically, by adjusting and increasing the number of shims 3, the gap between the door 6 and the door frame 2 is adjusted to a reasonable range.

[0050] For example, if there is a slight deformation between the door 6 and the door frame 2, the gap between the door 6 and the door frame 2 can be adjusted to a reasonable range by increasing the number of shims 3 at the fastening points in the deformed area, so as to achieve the sealing requirements.

[0051] Preferably, the door lock mechanism includes a latch 8 and a stop 9, which are respectively installed on the door 6 and the door frame 2.

[0052] Specifically, the cooperation between the latch 8 and the locking stop 9 enables the door 6 to be locked to the door frame 2.

[0053] like Figures 5-7 As shown, preferably, the step of replacing the door lock mechanism if the wear of the door lock mechanism exceeds a set threshold includes: replacing the lock tongue 8 if the wear of the lock tongue 8 exceeds a set threshold.

[0054] Specifically, during maintenance, the latch 8 on the door 6 is managed, and the latch 8 is replaced when the wear exceeds the set threshold.

[0055] Preferably, replacing the door lock mechanism if the wear of the door lock mechanism exceeds a set threshold includes: if the wear of the latch 8 does not exceed the set threshold, but the lock stop 9 shows signs of wear, then replacing the lock stop 9 with a new one.

[0056] Specifically, during maintenance, the appropriate compensation amount for the locking stop 9 is calculated based on the coordination between the latch 8 on the door 6 and the locking stop 9 on the door frame 2. By replacing the locking stop 9 on the door 6, the door lock mechanism can be restored to normal operation.

[0057] Preferably, if the wear of the latch 8 does not exceed a set threshold, then replacing the lock stop 9 includes: if the wear of the latch 8 does not exceed the set threshold, then obtaining the wear of the latch 8 and the wear of the lock stop 9, manufacturing a new lock stop 9, and using the size of the worn lock stop 9 as a reference, superimposing the cumulative wear of the latch 8 and the lock stop 9 as a compensation amount.

[0058] Specifically, during maintenance, the appropriate compensation amount for the locking stop 9 is calculated based on the coordination between the latch 8 on the door 6 and the locking stop 9 on the door frame 2. By replacing the locking stop 9 on the door 6, the door lock mechanism can be restored to normal operation.

[0059] For example, if the wear of the latch 8 is 'a' and the wear of the stop 9 is 'b', then the clearance caused by the door lock mechanism is 'a+b'. If the latch 8 is within its limits, the new stop 9 should be compensated by 'a+b' based on the original dimensions to ensure the door lock mechanism functions properly.

[0060] like Figure 8 and Figure 9 As shown, preferably, if the seal 7 between the door 6 and the door frame 2 and the gap between the door 6 and the door frame 2 are not compatible, then determining the size and elasticity of the seal 7 based on the gap between the door 6 and the door frame 2, and selecting a new seal 7 for replacement, includes: if the seal 7 between the door 6 and the door frame 2 and the gap between the door 6 and the door frame 2 are not compatible, then determining the elasticity of the seal 7 and the size and thickness of the contact portion of the seal 7 based on the gap between the door 6 and the door frame 2, and selecting a new seal 7 for replacement.

[0061] Specifically, during maintenance and replacement, the gap between the door 6 and the door frame can be measured, and the size and elasticity of the seal 7 can be changed to compensate for the gap in the door 6 and achieve a sealing effect.

[0062] For example, a defect in a door sealing mechanism can alter the size and thickness of the contact portion of the seal 7 to change the defect in the seal 7 on the door 6 and achieve a sealing effect.

[0063] Preferably, the seal 7 is elliptical in shape.

[0064] Specifically, the original seal 7 was circular, while the current seal 7 is elliptical. This changes the elasticity of the seal 7 and the size and thickness of the contact portion of the seal, thereby achieving a sealing effect through changes in the size and elasticity of the seal 7.

[0065] In summary, when implementing the locomotive and rolling stock door sealing adjustment method of this application, regarding the problem of local deformation of the door 6 and door frame 2, the locomotive and rolling stock body 1 deforms during operation, causing deformation of the door 6 and door frame 2, etc. Large deformations can be addressed through leveling and welding repairs. However, due to the large size of the door 6, the tolerance after leveling is large, making it impossible to ensure that the door edge of the door 6 and door frame 2 meet the required precision at localized leveling points. At areas of localized deformation, the gap between the door 6 and door frame 2 can be adjusted to a reasonable range by increasing the number of shims 3.

[0066] For example, if there is a slight deformation in a part of the door 6 and the door frame 2, the door 6 and the door frame 1 can be adjusted to a reasonable range by increasing the number of shims 3 at the fastening points in the deformed area, so as to achieve the sealing requirements.

[0067] Regarding the issue of door 6 not locking properly due to wear and tear on the door lock mechanism, the frequent opening and closing of door 6 during locomotive operation, coupled with the prolonged opening and closing of the door lock mechanism, has led to wear and tear on components such as the latch 8 and the locking stop 9. Over time, the accumulated wear and impact have caused the door lock mechanism to loosen, resulting in a larger gap between door 6 and door frame 2, leading to poor sealing. During maintenance, the latch 8 is managed, and replaced when wear exceeds a set threshold. During locking stop maintenance, the required compensation amount for locking stop 9 is calculated based on the engagement state of latch 8 and locking stop 9. Replacing locking stop 9 restores the door lock mechanism to normal operation.

[0068] For example, if the wear of the latch 8 is 'a' and the wear of the stop 9 is 'b', then the clearance caused by the door lock mechanism is 'a+b'. If the latch 8 is within its limits, the new stop 9 should be compensated by 'a+b' based on the original dimensions to ensure the door lock mechanism functions properly.

[0069] Regarding the issue of poor sealing performance caused by defects in the original door seal 7, some locomotives and rolling stock have defective door seals 7. Changing the overall metal frame structure is costly as it is already fixed. The door seal 7 has a lifespan management system and is a component that must be replaced within a maintenance cycle. During maintenance and replacement, the gap in the door 6 can be measured, and the external dimensions and elasticity of the seal 7 can be adjusted to compensate for the gap and achieve a sealing effect.

[0070] For example, a defect in a door sealing mechanism can alter the size and thickness of the contact portion of the seal 7 to change the defect in the seal 7 of the door 6 and achieve a sealing effect.

[0071] This sealing adjustment method, through systematic research, summarizes and analyzes the quality problem, and proposes a solution from its essence. From the perspective of full-cycle maintenance and operation, it formulates a door sealing adjustment method to reduce repetitive work. Based on the analysis of the original door structure, it proposes optimization of the sealing components to improve quality. The measures formulated are highly adaptable and can effectively and thoroughly solve this type of problem.

[0072] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A method for adjusting the sealing performance of a locomotive and rolling stock door, used to adjust the sealing performance between the door and the door frame on the locomotive and rolling stock body, wherein the door and the door frame are sealed together by a sealing element, and the door and the door frame are locked together by a door lock mechanism, characterized in that... The sealing adjustment method includes: Inspect the doors, door frames, door lock mechanisms, and seals between the doors and door frames; If the door and / or door frame are deformed, repair the door and / or door frame. For localized deformation, obtain the amount of localized deformation and fill the deformed location with a support structure according to the amount of localized deformation. If the wear of the door lock mechanism exceeds the set threshold, replace the door lock mechanism with a new one. If the seal between the door and the door frame and the gap between the door and the door frame do not match, the size and elasticity of the seal should be determined according to the gap between the door and the door frame in order to select a new seal for replacement. The supporting structure includes multiple pads, which are stacked on top of each other. If the door and / or door frame are deformed, the door and / or door frame shall be repaired. For local deformation, the local deformation amount shall be obtained, and a support structure shall be filled at the local deformation location according to the local deformation amount. The door lock mechanism includes a latch and a stop, the latch and the stop being respectively installed on the vehicle door and the door frame; The step of replacing the door lock mechanism if the wear of the lock mechanism exceeds a set threshold includes: if the wear of the lock tongue exceeds the set threshold, replacing the lock tongue; if the wear of the lock tongue does not exceed the set threshold but the lock stop shows wear, replacing the lock stop; if the wear of the lock tongue does not exceed the set threshold, obtaining the wear of the lock tongue and the wear of the lock stop, manufacturing a new lock stop, and using the size of the worn lock stop as a reference, superimposing the cumulative wear of the lock tongue and the lock stop as a compensation amount.

2. The locomotive and rolling stock door sealing adjustment method according to claim 1, characterized in that, The gasket has an opening, and the supporting structure also includes bolts that pass through multiple gaskets and are threaded to the local deformation location.

3. The locomotive and rolling stock door sealing adjustment method according to claim 1, characterized in that, If the seal between the door and the door frame and the gap between the door and the door frame are not compatible, the size and elasticity of the seal are determined based on the gap between the door and the door frame in order to select a new seal for replacement. This includes: if the seal between the door and the door frame and the gap between the door and the door frame are not compatible, the elasticity of the seal and the size and thickness of the contact portion of the seal are determined based on the gap between the door and the door frame in order to select a new seal for replacement.

4. The locomotive and rolling stock door sealing adjustment method according to claim 1, characterized in that, The seal is elliptical in shape.

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