Airtightness detection device for rail transit lighting lamp

By designing an airtightness testing device for rail transit lights, utilizing air pressure testing and a mechanical transmission system, the problem of airtightness testing of rail transit lights at the factory has been solved, ensuring the quality and safety of the lights and avoiding circuit damage and safety hazards caused by airtightness issues.

CN224341179UActive Publication Date: 2026-06-09CHANGZHOU SAIER TRAFFIC EQUIP CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGZHOU SAIER TRAFFIC EQUIP CO LTD
Filing Date
2025-08-29
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing rail transit lights lack airtightness testing at the factory, which makes it impossible to ensure their airtightness and waterproofness. This may cause rainwater to enter the lights and damage circuit components, creating safety hazards and requiring manpower for maintenance.

Method used

An airtightness testing device was designed, including components such as a base, a pressure tank, a detector, a trigger, a delivery pipe, and a pointer. The airtightness of the rail transit light is determined by air pressure detection and sealing structure, and the test results are displayed using air pressure changes and a mechanical transmission system.

Benefits of technology

This technology enables airtightness testing of rail transit lights, ensuring factory quality, preventing circuit damage and safety hazards caused by airtightness issues, and improving testing efficiency and safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to rail transit lamp technical field especially, a kind of air tightness detection device for rail transit lighting lamp, solve the shortcoming that there is lack of air tightness detection device in prior art, including base, the upper of base is provided with buckle, the upper of buckle is provided with air pressure tank, the both sides of air pressure tank are provided with air pipe, the upper of base is provided with storage tank, the upper of base is provided with pusher, the output of pusher is provided with push rod, push rod is connected with storage tank, the front side of storage tank is provided with valve, the upper of base is provided with second group of air pushing assembly, the front side of second group of air pushing assembly, valve is all provided with detector, the back of detector is provided with support frame, the bottom of support frame is provided with sleeve, the inside of sleeve is provided with detection rod, the utility model has the characteristics of practicality and air tightness detection.
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Description

Technical Field

[0001] This utility model relates to the field of rail transit technology, specifically to an airtightness testing device for rail transit lighting. Background Technology

[0002] Rail transit lighting fixtures are specialized lighting fixtures that provide illumination for rail transit systems (such as subways and railways). Their main features include high brightness, energy saving and environmental protection, and shock resistance.

[0003] Existing rail transit lights have a certain degree of shock resistance when they leave the factory, but there is currently a lack of airtightness testing for these lights. Therefore, it is impossible to determine their airtightness and waterproof performance, which makes it impossible to ensure factory quality and know their service life. Real-time monitoring can only be carried out during use. However, when airtightness problems are detected in the rail transit lights, rainwater may enter the lights and damage the circuit components, which may indirectly lead to power outages and loss of lighting effects, creating safety hazards. In such cases, emergency repairs are required, which is manpower-intensive and prone to safety issues.

[0004] Therefore, it is necessary to design a practical and effective airtightness testing device for rail transit lighting. Utility Model Content

[0005] The purpose of this invention is to provide an airtightness testing device for rail transit lighting to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an airtightness testing device for rail transit lighting, comprising a base, a buckle on the top of the base, a pressure tank on the top of the buckle, air pipes on both sides of the pressure tank, a storage tank on the top of the base, a pusher on the top of the base, a push rod on the output end of the pusher, the push rod being connected to the storage tank, a valve on the front side of the storage tank, and a second set of air-pushing components on the top of the base.

[0007] According to the above technical solution, detectors are provided on the front side of the second group of thrust components and valves, a support frame is provided on the rear side of the detectors, a sleeve is provided at the bottom of the support frame, a detection rod is provided inside the sleeve, a spring is provided on the outside of the detection rod, and a trigger is provided on the outside of the detection rod.

[0008] According to the above technical solution, a conveying pipe is provided on the outside of the detector, a detection chamber is provided on the rear side of the conveying pipe, a cylinder is provided above the detection chamber, a sealing plate is provided at the end of the cylinder rod, a slide rail is provided above the base, a placement compartment is provided above the slide rail, and a track traffic light is provided inside the placement compartment.

[0009] According to the above technical solution, a sliding chamber is provided above the base, a threaded rod is rotatably connected inside the sliding chamber, a slider is threadedly engaged on the outside of the threaded rod, the slider is slidably connected to the sliding chamber, and the trigger is connected to the slider.

[0010] According to the above technical solution, a first helical gear is provided above the threaded rod, and a second helical gear is rotatably connected to the inner side of the sliding chamber. The first helical gear and the second helical gear are meshed with each other, and a pointer is provided on the outer side of the second helical gear.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0012] (1) By setting a trigger, a trigger is set on the outside of the detection rod. After the gas enters the detector, the internal gas pressure will push the detection rod upward, causing the detection rod to slide upward in the sleeve. At the same time, the spring is compressed by force, and the trigger rises with the detection rod. The rising height represents the gas pressure value. By observing the triggers on both sides, it can be determined whether the gas pressure values ​​on both sides are the same.

[0013] (2) By setting up a placement chamber, the interior of which is equipped with a track traffic light. The left side of the placement chamber contains compliant track traffic lights, and the right side contains the detection track traffic lights. After the track traffic lights are placed, the placement chamber slides inward on the slide rail. When it reaches the designated position, the cylinder is activated, and the sealing plate is lowered by the air rod. The sealing plate seals the placement chamber. In the subsequent detection process, the gas inside the detector will enter the placement chamber through the delivery pipe. At this time, the trigger will drop due to the pressure relief of the air. Then the detection personnel will conduct detection on both sides.

[0014] (3) By setting a pointer, when the gas inside the detector on the right side is completely rushed into the placement chamber, the trigger will also drop to a certain height. At this time, the trigger drives the slider to drop, the threaded rod rotates and drives the first helical gear to rotate, and the second helical gear meshes and makes it rotate. Then the staff can observe the pointer on the outside to determine whether the rail traffic light meets the airtightness requirements. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0016] Figure 2This is a schematic diagram of the overall rear structure of this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the left side of the entire utility model;

[0018] In the diagram: 1. Base; 2. Buckle; 3. Pressure tank; 4. Air pipe; 5. Second set of air-pushing components; 6. Pusher; 7. Push rod; 8. Storage tank; 9. Valve; 10. Detector; 11. Support frame; 12. Sleeve; 13. Detection rod; 14. Spring; 15. Delivery pipe; 16. Detection chamber; 17. Cylinder; 18. Enclosure plate; 19. Slide rail; 20. Placement compartment; 21. Track traffic light; 22. Trigger; 23. Slider; 24. Threaded rod; 25. Sliding compartment; 26. First helical gear; 27. Second helical gear; 28. Pointer. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-3 This utility model provides a technical solution: an airtightness testing device for rail transit lighting, comprising a base 1, a buckle 2 above the base 1, a pressure tank 3 above the buckle 2, air pipes 4 on both sides of the pressure tank 3, a storage tank 8 above the base 1, a pusher 6 above the base 1, a push rod 7 at the output end of the pusher 6, the push rod 7 being connected to the storage tank 8, a valve 9 on the front side of the storage tank 8, and a second set of air-pushing components 5 above the base 1, for different rail transit lights 2. 1. Due to differences in internal airtightness, the buckle 2 allows for easy disassembly of the pressure tank 3, enabling the replacement of different pressure tanks 3 to improve usability and facilitate maintenance. After the detection preparation is completed, the second set of air-pushing components 5 has the same structure as the other side. The pressure tank 3 is opened, and the pressure tank 3 delivers the internal gas to the storage tanks 8 on both sides through the air pipe 4. Then it is closed. At this time, the air pressure of the two storage tanks 8 is the same. Then the valve 9 is opened, and the pusher 6 is activated to inject the gas in the storage tank 8 into the detector 10 through the push rod 7 to start the detection. Then the valve 9 is closed.

[0021] The second set of air-pushing components 5 and valve 9 are equipped with detectors 10 on the front side, and a support frame 11 is provided on the rear side of the detectors 10. A sleeve 12 is provided at the bottom of the support frame 11. A detection rod 13 is provided inside the sleeve 12. A spring 14 is provided on the outside of the detection rod 13. A trigger 22 is provided on the outside of the detection rod 13. After the gas enters the detector 10, the internal air pressure will push the detection rod 13 upward, causing the detection rod 13 to slide upward in the sleeve 12. At the same time, the spring 14 is compressed, and the trigger 22 rises with the detection rod 13. The rising height represents the air pressure value. By observing the triggers 22 on both sides, it can be determined whether the air pressure values ​​on both sides are the same.

[0022] A delivery pipe 15 is provided on the outside of the detector 10, and a detection chamber 16 is provided on the rear side of the delivery pipe 15. A cylinder 17 is provided above the detection chamber 16, and a sealing plate 18 is provided at the end of the cylinder 17's rod. A slide rail 19 is provided above the base 1, and a placement chamber 20 is provided above the slide rail 19. A traffic light 21 is provided inside the placement chamber 20. The left placement chamber 20 contains a compliant traffic light 21, and the right placement chamber 20 contains a detection traffic light 21. After the traffic light 21 is placed, the placement chamber 20 slides inward on the slide rail 19. After reaching the designated position, the cylinder 17 is activated, and the sealing plate 18 is lowered by the rod to seal the placement chamber 20. During the subsequent detection process, the gas inside the detector 10 will enter the placement chamber 20 through the delivery pipe 15. At this time, the trigger 22 will drop due to the pressure relief. Then, the detection personnel will perform detection on both sides.

[0023] A sliding chamber 25 is provided above the base 1. A threaded rod 24 is rotatably connected inside the sliding chamber 25. A slider 23 is threadedly engaged on the outside of the threaded rod 24. The slider 23 is slidably connected to the sliding chamber 25. The trigger 22 is connected to the slider 23. When the slider 23 slides up and down on the sliding chamber 25, it will drive the threaded rod 24 to rotate accordingly.

[0024] A first helical gear 26 is provided above the threaded rod 24, and a second helical gear 27 is rotatably connected to the inner side of the sliding chamber 25. The first helical gear 26 and the second helical gear 27 are meshed with each other. A pointer 28 is provided on the outer side of the second helical gear 27. When the gas inside the detector 10 on the right side is completely rushed into the placement chamber 20, the trigger 22 will also descend to a certain height. At this time, the trigger 22 drives the slider 23 to descend, and the threaded rod 24 rotates, driving the first helical gear 26 to rotate. Through the meshing second helical gear 27, it will follow the rotation. Then, the staff can observe the direction of the pointer 28 on the outer side to determine whether the rail traffic light 21 meets the airtightness requirements.

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

Claims

1. An airtightness testing device for rail transit lighting, comprising a base (1), characterized in that: A buckle (2) is provided above the base (1), a pressure tank (3) is provided above the buckle (2), air pipes (4) are provided on both sides of the pressure tank (3), a storage tank (8) is provided above the base (1), a pusher (6) is provided above the base (1), a push rod (7) is provided at the output end of the pusher (6), the push rod (7) is connected to the storage tank (8), a valve (9) is provided on the front side of the storage tank (8), and a second set of air-pushing components (5) is provided above the base (1).

2. The airtightness testing device for rail transit lighting according to claim 1, characterized in that: The second set of air thrust assembly (5) and valve (9) are equipped with detectors (10) on the front side. The detectors (10) are equipped with support frames (11) on the rear side. The support frames (11) are equipped with sleeves (12) at the bottom. The sleeves (12) are equipped with detection rods (13) inside. The detection rods (13) are equipped with springs (14) on the outside. The detection rods (13) are equipped with triggers (22) on the outside.

3. The airtightness testing device for rail transit lighting according to claim 2, characterized in that: A delivery pipe (15) is provided on the outside of the detector (10), a detection chamber (16) is provided on the rear side of the delivery pipe (15), a cylinder (17) is provided above the detection chamber (16), a sealing plate (18) is provided at the end of the cylinder (17), a slide rail (19) is provided above the base (1), a placement compartment (20) is provided above the slide rail (19), and a track traffic light (21) is provided inside the placement compartment (20).

4. The airtightness testing device for rail transit lighting according to claim 3, characterized in that: A sliding chamber (25) is provided above the base (1). A threaded rod (24) is rotatably connected inside the sliding chamber (25). A slider (23) is threaded on the outside of the threaded rod (24). The slider (23) is slidably connected to the sliding chamber (25). The trigger (22) is connected to the slider (23).

5. The airtightness testing device for rail transit lighting according to claim 4, characterized in that: A first helical gear (26) is provided above the threaded rod (24), and a second helical gear (27) is rotatably connected to the inner side of the sliding chamber (25). The first helical gear (26) and the second helical gear (27) are meshed with each other, and a pointer (28) is provided on the outer side of the second helical gear (27).