Railway locomotive roof rain leakage detection device
By employing a magnetic telescopic structure and a quick-disassembly and replacement contact plate design, the problem of existing devices being unable to cover high areas and the inability to quickly replace detection tools has been solved, enabling flexible, efficient, and safe leak detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING LOCOMOTIVE DEPOT OF CHINA RAILWAY BEIJING BUREAU GRP CO LTD
- Filing Date
- 2025-08-04
- Publication Date
- 2026-06-19
AI Technical Summary
The existing handheld design of the detection device for leaks on the roof of railway locomotives is difficult to cover higher areas, requiring the use of auxiliary climbing equipment, which increases the risk of operation and reduces efficiency. In addition, the detection tools cannot be cleaned or replaced quickly, affecting the quality of the detection.
It adopts a magnetic telescopic structure and a quick-replacement contact plate design. The support rod can be stably adjusted by magnetic attraction between the magnet and the magnetic rod. The contact plate can be quickly replaced by pressing the pressure rod. The locking post and the locking slot cooperate to ensure a firm installation. The indicator light alarm indicates the leak point.
It enables flexible inspection of roofs at different heights, improving the safety and efficiency of inspection, ensuring the independence and accuracy of each measurement, and avoiding the residual effects of inspection tools.
Smart Images

Figure CN224381197U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a device for detecting rain leaks on the roof of railway locomotives, and more particularly to a device for detecting rain leaks on the roof of railway locomotives. Background Technology
[0002] The device for detecting leaks in railway locomotive roofs utilizes a humidity sensor built into a contact plate, with no exposed components. When the contact plate comes into contact with the leaking area on the roof, the absorbent material absorbs moisture and triggers the internal sensor. The signal is transmitted through the built-in circuit to the indicator light at the top of the support rod. Operators can accurately locate the leak by observing the light alarm, eliminating the need to rely on external observation of humidity changes. This solves the problem of blind spots in manual detection, improves maintenance efficiency and accuracy, and ensures driving safety.
[0003] The device for detecting leaks on the roof of railway locomotives consists of a water-absorbing contact plate, a rotating block, connecting bolts, an indicator light, a support rod, and a handle. The contact plate uses a highly absorbent material with an embedded humidity sensor to accurately detect water seepage. The rotating block is adjustable to multiple angles via the connecting bolts, allowing the contact plate to flexibly fit the roof seams and edge corners. The support rod has built-in wiring connecting the humidity sensor to the top indicator light, which triggers an alarm light immediately when a leak occurs. The operator uses the handle to rotate and adjust the angle of the contact plate, effectively overcoming the limitations of the interior structure and enabling rapid location of leaks in dimly lit environments. This significantly improves detection coverage and maintenance efficiency, eliminating the risk of missed detections due to manual handling.
[0004] The device has significant limitations in terms of detection height. Its handheld design makes it difficult to cover the higher areas of the locomotive roof, especially for locomotives with high roofs such as electric locomotives. In such cases, auxiliary climbing equipment is required to complete the full inspection, which increases the risk of operation and reduces efficiency. The long support rod is easily obstructed when moving in the narrow carriage, making it difficult to inspect some areas and affecting the overall maintenance quality. Therefore, the device for detecting rain leaks on the roof of railway locomotives is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a device for detecting rain leaks on the roof of railway locomotives, aiming to improve the problem that handheld designs in the prior art are difficult to cover the higher areas of the locomotive roof.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A device for detecting leaks in the roof of a railway locomotive includes a handle, a fixed ring fixedly connected to the top of the handle, a telescopic rod slidably connected to the inner side of the fixed ring, a pressure block slidably connected to the inner side of the telescopic rod, a fixed block one fixedly connected to the front end of the pressure block, a lever-operated pressure column slidably connected to the front end of the fixed block one, a rotating rod rotatably connected inside the lever-operated pressure column, and a disassembly and replacement assembly fixedly connected to the top of the handle.
[0008] As a further description of the above technical solution:
[0009] The disassembly and replacement assembly includes a support rod, a handle slidably connected to the bottom end of the support rod, a connecting bolt fixedly connected inside the support rod, a rotating block rotatably connected to the outside of the connecting bolt, a fixing block two fixedly connected to the top of the rotating block, two pressure rods slidably connected to the inside of the fixing block two, a locking pin fixedly connected to the outside of each of the two pressure rods, a locking block slidably connected to the outside of the locking pin, and a contact plate fixedly connected to the top of the locking block;
[0010] As a further description of the above technical solution:
[0011] The outer side of the rotating block is rotatably connected to the inner side of the support rod, and an indicator light is fixedly connected to the front end of the support rod;
[0012] As a further description of the above technical solution:
[0013] A magnetic rod is fixedly connected to the outside of the fixed ring, a magnet is slidably connected to the outside of the magnetic rod, and the outside of the magnet is fixedly connected to the inside of the lever-operated pressure column.
[0014] As a further description of the above technical solution:
[0015] A rotating rod is fixedly connected inside the lever-operated pressure column, and the outer side of the rotating rod is rotatably connected inside the fixed ring.
[0016] As a further description of the above technical solution:
[0017] A spring is fixedly connected to the bottom of the pressure rod, and a central block is fixedly connected to the other end of the spring;
[0018] As a further description of the above technical solution:
[0019] The outer side of the locking pin is slidably connected to the inner side of the second fixing block, and a central block is fixedly connected to the inner side of the second fixing block.
[0020] As a further description of the above technical solution:
[0021] The handle has a telescopic rod slidably connected inside, and a support rod is fixedly connected to the outside of the telescopic rod.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, the support rod can be quickly adjusted by using a magnetic telescopic structure. During operation, the length can be freely adjusted by simply moving the pressure column to meet the inspection needs of locomotive roofs of different heights. The magnetic attraction design between the magnet and the magnetic rod ensures that the telescopic rod is firmly locked, preventing loosening during the inspection process. This not only improves the safety of high-altitude operations but also enhances the adaptability of the inspection, making single-person operation more convenient and efficient.
[0024] 2. In this utility model, the contact plate can be disassembled and replaced by pressing the pressure rod, avoiding residual moisture from affecting the accuracy of subsequent tests. The cooperation between the clamping post and the clamping slot ensures a firm installation, while achieving replacement in seconds, significantly improving the efficiency of continuous testing, solving the pain point that the testing tools cannot be cleaned or replaced quickly, and ensuring the independence and accuracy of each measurement. Attached Figure Description
[0025] Figure 1 This is a three-dimensional schematic diagram of the device for detecting rain leakage on the roof of a railway locomotive proposed in this utility model;
[0026] Figure 2 This is a schematic diagram of the support rod of the device for detecting rain leakage on the roof of a railway locomotive proposed in this utility model;
[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0028] Figure 4 for Figure 2 Enlarged view of point B in the middle.
[0029] Legend:
[0030] 1. Contact plate; 2. Rotating block; 3. Connecting bolt; 4. Indicator light; 5. Support rod; 6. Handle; 7. Locking block; 8. Telescopic rod; 9. Fixing ring; 10. Pressure block; 11. Actuating pressure column; 12. Rotating rod; 13. Fixing block one; 14. Magnetic rod; 15. Magnet; 16. Pressure rod; 17. Locking column; 18. Spring; 19. Fixing block two; 20. Center block. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] Reference Figures 1 to 3This utility model provides an embodiment of a device for detecting leaks in the roof of a railway locomotive, comprising a handle 6. The handle 6 serves as an ergonomic handheld component, allowing operators to hold it for extended periods during inspections. A fixing ring 9 is fixedly connected to the top of the handle 6, and a telescopic rod 8 is slidably connected inside the handle 6. The fixing ring 9 provides stable sliding support for the telescopic rod 8, ensuring that the telescopic rod 8 maintains linear motion during extension and retraction. The telescopic rod 8 can slide inside the handle 6, allowing adjustment of the overall length of the device to accommodate inspection needs of railway locomotive roofs of different heights. A support rod 5 is fixedly connected to the outside of the telescopic rod 8. The support rod 5 is the main support structure of the device, capable of withstanding certain external forces and ensuring the stability of the inspection process.
[0033] The inner side of the fixed ring 9 is slidably connected to the telescopic rod 8, which further enhances the stability of the telescopic rod 8 sliding. The inner side of the telescopic rod 8 is slidably connected to the pressure block 10. The front end of the pressure block 10 is fixedly connected to the fixing block 13. The pressure block 10 can slide inside the telescopic rod 8. Through cooperation with the lever pressure column 11, the telescopic rod 8 can be locked and unlocked. The front end of the fixing block 13 is slidably connected to the lever pressure column 11. The fixing block 13 provides a connection fulcrum for the lever pressure column 11, ensuring that the lever pressure column 11 can stably drive the pressure block 10 to move. The inside of the lever pressure column 11 is rotatably connected to the rotating rod 12. The lever pressure column 11 can rotate around the rotating rod 12. By levering the lever pressure column 11, the pressure block 10 can be controlled.
[0034] The rotating rod 12 provides rotational support for the lever-operated pressure column 11, ensuring that the lever-operated pressure column 11 can rotate flexibly. The rotating rod 12 is fixedly connected inside the lever-operated pressure column 11, further enhancing the connection stability between the rotating rod 12 and the lever-operated pressure column 11. The outer side of the rotating rod 12 is rotatably connected to the inside of the fixed ring 9, allowing the lever-operated pressure column 11 to rotate relative to the fixed ring 9, realizing the locking and unlocking operation of the telescopic rod 8. The outer side of the fixed ring 9 is fixedly connected to the magnetic rod 14, and the outer side of the magnetic rod 14 is slidably connected to the magnet 15. The magnetic rod 14 provides an attraction effect for the magnet 15. Through the cooperation of the magnetic rod 14 and the magnet 15, the lever-operated pressure column 11 can be fixed, ensuring that the telescopic rod 8 remains stable in the locked state. The magnet 15 can slide outside the magnetic rod 14. When the lever-operated pressure column 11 rotates to a certain position, the magnet 15 attracts the magnetic rod 14, fixing the lever-operated pressure column 11 at that position. The outer side of the magnet 15 is fixedly connected to the inside of the lever-operated pressure column 11, ensuring that the magnet 15 and the lever-operated pressure column 11 move synchronously.
[0035] Reference Figure 2 , Figure 4The components to be disassembled and replaced include a support rod 5. A handle 6 is slidably connected to the bottom end of the support rod 5, allowing the support rod 5 to slide relative to the handle 6 and adjust the length of the device. A connecting bolt 3 is fixedly connected inside the support rod 5. A rotating block 2 is rotatably connected to the outside of the connecting bolt 3. The connecting bolt 3 provides rotational support for the rotating block 2, ensuring that the rotating block 2 can rotate stably around the connecting bolt 3. The rotating block 2 can rotate around the connecting bolt 3. By rotating the rotating block 2, the angle of the top can be adjusted so that it better fits the roof surface. The outside of the rotating block 2 is rotatably connected to the inside of the support rod 5, further enhancing the connection stability between the rotating block 2 and the support rod 5.
[0036] An indicator light 4 is fixedly connected to the front end of the support rod 5. A fixing block 2 19 is fixedly connected to the top end of the rotating block 2. Two pressure rods 16 are slidably connected to the inner side of the fixing block 2 19. A locking post 17 is fixedly connected to the outer side of each of the two pressure rods 16. A locking block 7 is slidably connected to the outer side of the locking post 17. A contact plate 1 is fixedly connected to the top end of the locking block 7. The fixing block 2 19 provides an installation base for the pressure rods 16 and the locking post 17, ensuring that the components can work stably. The two pressure rods 16 can slide inside the fixing block 2 19. By squeezing the pressure rods 16, the locking post 17 can be driven to slide inward, thereby disassembling the contact plate 1. The locking post 17 can cooperate with the locking block 7 to achieve quick installation and disassembly of the contact plate 1. The indicator light 4 serves as an indicator of the detection result. When the contact plate 1 detects leakage, the indicator light 4 will flash to alert the operator.
[0037] A disassembly and replacement assembly is fixedly connected to the top of the handle 6. The disassembly and replacement assembly enables quick disassembly and replacement of the contact plate 1, facilitating timely replacement of damaged or contaminated contact plates 1 during the testing process. When the locking pin 17 is locked in the slot of the locking block 7, the contact plate 1 is firmly fixed to the second fixing block 19. When the locking pin 17 is disengaged from the slot of the locking block 7, the contact plate 1 can be quickly disassembled. A spring 18 is fixedly connected to the bottom of the pressure rod 16, and a center block 20 is fixedly connected to the other end of the spring 18. The spring 18 provides elastic force to the pressure rod 16, enabling the pressure rod 16 to remain in its initial position when no external force is applied. The outer side of the locking pin 17 is slidably connected to the inner side of the second fixing block 19, ensuring that the locking pin 17 remains stable during sliding. The center block 20 is fixedly connected to the inner side of the second fixing block 19, providing fixed support for the spring 18 and ensuring that the spring 18 can work normally.
[0038] Working principle: When the contact plate 1 absorbs water, the humidity sensor alarms, and the indicator light 4 flashes. The bottom of the support rod 5 is the handle 6. During operation, the handle 6 can be held for inspection. When operating, the operator holds the handle 6, puts the contact plate 1 against the roof, and then scans. Areas with gaps or obscured by vehicle parts can be fitted by rotating the rotating block 2. Then, the inspection is carried out step by step. When a leak is found, the indicator light 4 lights up, and the roof can be repaired in that area. In order to adapt to the roof height of different vehicles, a telescopic component is added between the support rod 5 and the handle 6. When extension is required, pull the lever 11 outward, which will drive the fixing block 13 to retract outward so that the lever 10 no longer compresses the telescopic rod 8. At this time, pull the bottom handle 6 to reach the required height. Then, re-lock the lever 11 until the magnet 15 fixed inside it attracts the magnetic rod 14 to fix the entire handle part.
[0039] If a leak is detected and an alarm is triggered during testing, the top contact plate 1 can be quickly disassembled to avoid affecting the next measurement. First, press the pressure rod 16 inward to drive the locking pin 17 to slide inward and disengage from the slot of the locking block 7. Then, pull the contact plate 1 out and replace it. To replace it, simply press the pressure rod 16 again. Then, install the contact plate 1 so that the locking block 7 is fitted onto the fixing block 19. With the help of the spring 18, the pressure rod 16 will spring back outward. At this time, the locking pin 17, which is fixed outside the pressure rod 16, will be locked back into the slot of the locking block 7, achieving quick disassembly and preventing the measurement from affecting the next measurement. This allows for multiple measurements to be performed quickly without mutual interference.
[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A device for detecting leaks in the roof of a railway locomotive, including a handle (6), characterized in that: A fixing ring (9) is fixedly connected to the top of the handle (6). A telescopic rod (8) is slidably connected to the inner side of the fixing ring (9). A pressure block (10) is slidably connected to the inner side of the telescopic rod (8). A fixing block (13) is fixedly connected to the front end of the pressure block (10). A lever (11) is slidably connected to the front end of the fixing block (13). A rotating rod (12) is rotatably connected inside the lever (11). A disassembly and replacement assembly is fixedly connected to the top of the handle (6).
2. The device for detecting rain leakage on the roof of a railway locomotive according to claim 1, characterized in that: The disassembly and replacement assembly includes a support rod (5), with a handle (6) slidably connected to the bottom end of the support rod (5). A connecting bolt (3) is fixedly connected inside the support rod (5). A rotating block (2) is rotatably connected to the outside of the connecting bolt (3). A fixing block two (19) is fixedly connected to the top end of the rotating block (2). Two pressure rods (16) are slidably connected to the inside of the fixing block two (19). A locking post (17) is fixedly connected to the outside of each of the two pressure rods (16). A locking block (7) is slidably connected to the outside of the locking post (17). A contact plate (1) is fixedly connected to the top end of the locking block (7).
3. The device for detecting rain leakage on the roof of a railway locomotive according to claim 2, characterized in that: The outer side of the rotating block (2) is rotatably connected to the inner side of the support rod (5), and the front end of the support rod (5) is fixedly connected to an indicator light (4).
4. The device for detecting rain leakage on the roof of a railway locomotive according to claim 1, characterized in that: A magnetic rod (14) is fixedly connected to the outside of the fixed ring (9), and a magnet (15) is slidably connected to the outside of the magnetic rod (14). The outside of the magnet (15) is fixedly connected to the inside of the levering pressure column (11).
5. The device for detecting rain leakage on the roof of a railway locomotive according to claim 1, characterized in that: The inside of the lever (11) is fixedly connected to a rotating rod (12), and the outside of the rotating rod (12) is rotatably connected to the inside of the fixed ring (9).
6. The device for detecting rain leakage on the roof of a railway locomotive according to claim 2, characterized in that: A spring (18) is fixedly connected to the bottom of the pressure rod (16), and a center block (20) is fixedly connected to the other end of the spring (18).
7. The device for detecting rain leakage on the roof of a railway locomotive according to claim 2, characterized in that: The outer side of the locking post (17) is slidably connected to the inner side of the fixing block two (19), and the inner side of the fixing block two (19) is fixedly connected to the center block (20).
8. The device for detecting rain leakage on the roof of a railway locomotive according to claim 1, characterized in that: The handle (6) is slidably connected to a telescopic rod (8), and a support rod (5) is fixedly connected to the outside of the telescopic rod (8).