CRH1 type motor train unit sliding plug door sealing performance detection device

Abstract

The utility model discloses a CRH1 type motor train unit sliding plug door sealing performance detection device, which comprises a framework, an inflation nozzle device and an inflation inlet device, the top of the framework is fixedly connected with an inflation nozzle wind pressure meter and movably connected with a side plate, one side of the framework is fixedly communicated with an inflation nozzle interface, and the other side of the framework is fixedly communicated with an inflation nozzle wind pressure meter. One side of the framework is fixedly communicated with an inflation inlet connector, the inflation inlet connector is located between the battery bin and the inflation nozzle connector, an inflation inlet wind pressure meter is fixedly connected to the interior of the framework, an air pump is fixedly connected to the interior of the framework, and a top plate is movably connected to the front face of the framework. When the CRH1-type motor train unit sliding plug door sealing performance detection device is used, a built-in air pump is used for supplying air, an external interface is connected into a built-in charging connector or a built-in charging port of a sliding plug door through a hose, so that a numerical value is fed back on a wind pressure meter, and two maintenance project operations of a rubber strip pressure maintaining leakage point test and charging wind pressure measurement are completed; and the adhesive tape and air supply air pressure state can be quickly judged.

Description

Technical Field

[0001] The utility model relates to the technical field of maintenance of plug sliding doors of electric multiple unit trains, in particular to a sealing performance detection device for plug sliding doors of CRH1 type electric multiple unit trains. Background Art

[0002] During the high-speed travel of the EMU, it is crucial to ensure the sealing of the Plug Door, which helps to ensure the safety and comfort of the passengers. The inflatable rubber strip is a key component to ensure the airtightness of the Plug Door. Its effectiveness can not only reduce the discomfort caused by changes in airflow when the car body passes through the tunnel, but also effectively soundproof.

[0003] The locking process of the plug door relies on the upper and lower locking hooks being locked synchronously, and then the inflation solenoid valve is activated to fill the compressed air into the inflatable rubber strip to expand it and fill the gap around the door frame. However, in daily train operation, the inflatable rubber strip may be damaged due to foreign objects on the door frame, long-term high-speed operation or puncture by sharp objects. This fault will cause the rubber strip to leak air and make strange noises during high-speed operation, and even make the rubber strip unable to completely fill the gap around the door frame, causing the plug door to shake violently, resulting in damage to the plug door mechanism or dimensional deviation.

[0004] In addition, when the plug door is closed, the nozzle will supply air to the air intake device to ensure the sealing performance of the inflatable rubber strip. However, if the air supply is too large, it may cause a loud whistling sound when the train passes through the tunnel, thus affecting the comfort of the passengers; if the air supply is too small, it may cause negative pressure when the train passes through the tunnel, making the plug door sealing effect poor.

[0005] Due to the special nature of the inflatable rubber strip, it is necessary to check when the train is under high voltage and the plug door is closed to check whether there is any leakage in the rubber strip. However, the on-site environment is usually noisy, and it is difficult to directly observe the slight damage to the rubber strip, so there is a risk that the leakage fault may be overlooked.

[0006] In order to solve this problem, the EMU stipulates that the sealing performance of the plug door rubber strip should be checked by spraying a leak tester, which not only realizes sound detection, but also provides visual judgment, thus ensuring double verification. However, due to the short power-on time of the train, it is impossible to cover the plug door for maintenance when it is filled with air. For this reason, on this basis, each track in Hangzhou is equipped with a compressed air pipeline, so that even if the vehicle is out of power, the plug door can still be filled with air, and the plug door sealing performance inspection can be completed with the leak tester.

[0007] However, the current maintenance method still has the following pain points: (1) The position of the external air source does not correspond: In actual operation, the external air source does not match the position of the Sierra door, resulting in the situation where there is no external air source outside some Sierra doors. In order to connect to a more distant air source, the operation process becomes extremely inconvenient; (2) The pipeline system is easily damaged under severe weather conditions: Although the solution can perform Sierra door air filling operation without electricity, under severe weather conditions such as extreme temperature, high humidity or strong wind, the pipeline system may malfunction or be damaged, thus affecting the filling of the Sierra door; (3) Connecting the external air source is time-consuming and labor-intensive: Although the solution avoids the situation where the inspection can only be carried out under high voltage with electricity, the external air source needs to be connected to the air door every time it is inspected, which increases the operation time and labor costs and reduces the maintenance efficiency; (4) The problem of Sierra door air supply volume has not been solved: So far, an ideal solution has not been found to control the air supply volume of the Sierra door, which may affect the sealing performance of the Sierra door and the comfort of the passengers. Summary of the invention

[0008] The utility model aims to provide a CRH1 EMU plug door sealing performance detection device to solve the problems of difficulty in troubleshooting the leakage of air-filled rubber strips and inability to measure the air supply pressure proposed in the above-mentioned background technology.

[0009] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0010] A CRH1 EMU plug door sealing performance detection device comprises a frame, an inflation nozzle device and an inflation port device, wherein an inflation nozzle air pressure gauge is fixedly connected to the top of the frame, a side plate is movably connected to the top of the frame, an inflation nozzle interface is fixedly connected to one side of the frame, a battery compartment is movably connected to one side of the frame and the battery compartment is located at the bottom of the inflation nozzle interface, an inflation port interface is fixedly connected to one side of the frame and the inflation port interface is located between the battery compartment and the inflation nozzle interface, an inflation port air pressure gauge is fixedly connected to the inside of the frame, an air pump is fixedly connected to the inside of the frame, and a top plate is movably connected to the front of the frame. When in use, the device utilizes a built-in air pump to supply air and an external interface, and is connected to the built-in inflation nozzle or inflation port of the plug door through a hose, so as to feed back a value on the air pressure gauge, thereby completing two maintenance projects of a rubber strip pressure maintenance leakage point test and an inflation air pressure measurement, and quickly judging the status of the rubber strip and the air supply air pressure.

[0011] Further preferably, the side panel is movably connected to the top of the frame by screws and the inflation nozzle air pressure gauge passes through the side panel and is fixedly connected to the inflation nozzle interface. The air pump is the main power source of the device. Its function is to convert electrical energy into mechanical energy, drive the operation of the internal gear set, and generate rotational torque through the internal rotating electromagnetic field, thereby ensuring the stable output of air supply from the air pump.

[0012] Further preferably, a heat dissipation vent is opened inside the side panel, the top panel is movably connected to the front side of the frame by screws, and the inflation port wind pressure gauge passes through the top panel and is fixedly connected to the inflation port interface. The heat dissipation vent generates air flow to dissipate the heat generated by the operation of the air pump, thereby preventing the equipment from being damaged or affecting its performance due to overheating.

[0013] Further preferably, a second heat dissipation port is opened inside the top plate, and a third heat dissipation port is opened on the other side of the frame. The wind pressure gauge consists of a measuring tube and a pointer. Based on the principle of gas dynamics, a pressure difference is generated when the gas flows through the measuring tube, thereby deflecting the pointer and obtaining the gas pressure value.

[0014] Further preferably, one end of the inflation nozzle interface passes through an inner wall of one side of the frame and the other end of the inflation nozzle interface is fixedly connected to one side of the air pump, and the inflation nozzle air pressure gauge is fixedly sleeved on the side surface of the inflation nozzle interface through a fixing ring, thereby adapting to the plug door to complete the functional test.

[0015] Further preferably, the inflation port interface passes through an inner wall of one side of the frame and the inflation port air pressure gauge is fixedly sleeved on the side surface of the inflation port interface by a fixing ring, and the power supply is used to power the air pump. At the same time, the side panels, frame, and top panel are used to assemble the shell and support the air pump and internal circuit, with built-in interface and air pressure gauge.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] Built-in air source technology: Use the built-in air pump to supply air, avoiding the time consumption of plugging and unplugging the external air source. At the same time, add a wind pressure gauge to monitor the value change to achieve rapid detection and repair of the inflatable rubber strip;

[0018] Rapid repair technology for air leakage of inflatable strips: A solution combining leak detection agent spraying with wind pressure gauge monitoring is designed. By observing the changes in the wind pressure gauge value, it is possible to determine whether the inflatable strip is leaking, thereby achieving the ability to quickly locate and repair the leak point;

[0019] Mechanical design of the inflation port and the inflation nozzle: Through the connection of the inflation nozzle and the inflation port of different components, the built-in air pump can inflate the rubber strip. At the same time, the value change of the wind pressure gauge can be observed, which provides intuitive reference data for maintenance and improves the accuracy and efficiency of maintenance.

[0020] External inflation port air pressure adjustment technology: The design controls the air pressure of the external inflation port through a physically suctioned solenoid valve to ensure that the air pressure is stable within the standard range during the inflation process, thereby ensuring the sealing effect of the inflation strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2This is a schematic diagram of the overall explosion structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the partial explosion structure of the utility model Figure 1 ;

[0024] Figure 4 This is a schematic diagram of the partial explosion structure of the utility model Figure 2 ;

[0025] Figure 5 It is a front view three-dimensional structural schematic diagram of the utility model.

[0026] Wherein, each figure is marked as:

[0027] 1-inflating nozzle air pressure gauge; 2-side panel; 3-inflating nozzle interface; 4-frame; 5-battery compartment; 6-inflating port interface; 7-inflating port air pressure gauge; 8-air pump; 9-top panel; 10-inflating nozzle device; 11-inflating port device; 201-heat dissipation port one; 401-heat dissipation port three; 901-heat dissipation port two. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0030] See also Figure 1-Figure 5 The utility model provides a technical solution: a CRH1 type EMU plug door sealing performance detection device, including a frame 4, an inflation nozzle device 10 and an inflation port device 11, the top of the frame 4 is fixedly connected with an inflation nozzle wind pressure gauge 1, the top of the frame 4 is movably connected with a side plate 2, one side of the frame 4 is fixedly connected with an inflation nozzle interface 3, one side of the frame 4 is movably connected with a battery compartment 5 and the battery compartment 5 is located at the bottom of the inflation nozzle interface 3, one side of the frame 4 is fixedly connected with an inflation port interface 6 and the inflation port interface 6 is located between the battery compartment 5 and the inflation nozzle interface 3, the inside of the frame 4 is fixedly connected with an inflation port wind pressure gauge 7, the inside of the frame 4 is fixedly connected with an air pump 8, and the front of the frame 4 is movably connected with a top plate 9.

[0031] In this embodiment, Figure 1 , Figure 2 and Figure 5As shown, the side panel 2 is movably connected to the top of the frame 4 by screws, and the inflation nozzle wind pressure gauge 1 passes through the side panel 2 and is fixedly connected to the inflation nozzle interface 3. The wind pressure gauge consists of a measuring tube and a pointer. Based on the principle of gas dynamics, when the gas flows through the measuring tube, a pressure difference is generated, thereby deflecting the pointer and obtaining the gas pressure value.

[0032] In this embodiment, Figure 1 , Figure 2 and Figure 5 As shown, a heat dissipation port 201 is provided inside the side panel 2, the top panel 9 is movably connected to the front side of the frame 4 by screws, and the inflation port wind pressure gauge 7 penetrates the top panel 9 and is fixedly connected to the inflation port interface 6. The heat dissipation port generates air flow to dissipate the heat brought by the operation of the air pump 8, thereby preventing the equipment from being damaged or affecting its performance due to overheating.

[0033] In this embodiment, Figure 1 , Figure 2 and Figure 5 As shown, a heat dissipation port 2 901 is provided inside the top plate 9, and a heat dissipation port 3 401 is provided on the other side of the frame 4. The air pump 8 is the main power source of the device, and its function is to convert electrical energy into mechanical energy, drive the operation of the internal gear set, and generate a rotational torque through the internal rotating electromagnetic field, thereby ensuring the stable output of the air supply of the air pump 8.

[0034] In this embodiment, Figure 1 , Figure 2 and Figure 5 As shown, one end of the inflation nozzle interface 3 passes through an inner wall of one side of the frame 4 and the other end of the inflation nozzle interface 3 is fixedly connected to one side of the air pump 8. The inflation nozzle wind pressure gauge 1 is fixedly sleeved on the side surface of the inflation nozzle interface 3 through a fixing ring. The interface is used to connect with the inflation port or the inflation nozzle, so as to adapt to the plug door and complete the functional test.

[0035] In this embodiment, Figure 1 , Figure 2 and Figure 5 As shown, the inflation port interface 6 passes through the inner wall of one side of the frame 4 and the inflation port air pressure gauge 7 is fixedly sleeved on the side surface of the inflation port interface 6 by a fixing ring. The power supply is used to power the air pump 8. At the same time, the side panel 2, the frame 4, and the top plate 9 are used to assemble the shell and carry the air pump 8 and the internal circuit. The built-in interface and the air pressure gauge are used to supply air by the built-in air pump 8 to avoid the time consumption of plugging and unplugging the external air source. At the same time, an air pressure gauge is added to monitor the value changes to realize the rapid detection and repair of the inflation strip. A solution of leak detection agent spraying combined with air pressure gauge monitoring is designed. By observing the value changes of the air pressure gauge, it is judged whether the inflation strip is leaking, and the ability to quickly locate and repair the leakage point is realized.

[0036] The use method and advantages of the utility model: When the CRH1 type EMU plug door sealing performance detection device is used, the working process is as follows:

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, when conducting a pressure-maintaining leakage test for the rubber strip, an external inflation nozzle interface 3 is provided on the device, and an inflation nozzle device 10 is connected through a hose. The external inflation nozzle device 10 is connected to the built-in inflation port of the Sierra door, and the power switch is turned on. The built-in air pump 8 sucks in air and compresses it to a specific pressure value and then outputs it from the inflation nozzle device 10, thereby supplying air to the rubber strip. The top plate 9 and the side plate 2 are both provided with heat dissipation holes to dissipate heat in the air pump 8 to prevent malfunctions due to overheating of components. After observing the inflation nozzle wind pressure gauge 1 reaching the standard wind pressure, the pressure is maintained for a period of time. If the value of the inflation nozzle wind pressure gauge 1 does not change after this time, it means that the inflatable rubber strip is in good condition. If the value of the inflation nozzle wind pressure gauge 1 changes after this time, turn on the power switch again to continue to inflate the rubber strip, and use a leak tester to spray the rubber strip to find the leak point and repair the glue or replace the rubber strip.

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, when measuring the inflation pressure, the device is equipped with an inflation port interface 6, which is connected to the inflation port device 11 through a hose, and the external inflation port device 11 is connected to the built-in inflation nozzle of the Sierra door. A strong magnet is used to trigger the electromagnetic switch, and the electromagnetic valve is physically attracted to allow the built-in inflation nozzle of the Sierra door to supply air to the inflation port device 11. The changes in the inflation port pressure gauge 7 are observed. If the value is stable within the range of 1.5±0.3bar, the air supply pressure is normal. If it is not within the standard value range, the air supply pressure is adjusted to ensure the safety and stability of the inflation process.

[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A CRH1 EMU plug door sealing performance testing device, comprising a frame (4), an air filling nozzle device (10) and an air filling port device (11), characterized in that: The top of the frame (4) is fixedly connected to an air-inflating nozzle wind pressure gauge (1), the top of the frame (4) is movably connected to a side plate (2), one side of the frame (4) is fixedly connected to an air-inflating nozzle interface (3), one side of the frame (4) is movably connected to a battery compartment (5), and the battery compartment (5) is located at the bottom of the air-inflating nozzle interface (3), one side of the frame (4) is fixedly connected to an air-inflating port interface (6), and the air-inflating port interface (6) is located between the battery compartment (5) and the air-inflating nozzle interface (3), the interior of the frame (4) is fixedly connected to an air-inflating port wind pressure gauge (7), the interior of the frame (4) is fixedly connected to an air pump (8), and the front of the frame (4) is movably connected to a top plate (9).

2. A CRH1 EMU plug door sealing performance detection device according to claim 1, characterized in that: The side plate (2) is movably connected to the top of the frame (4) by means of screws, and the inflation nozzle wind pressure gauge (1) passes through the side plate (2) and is fixedly connected to the inflation nozzle interface (3).

3. A CRH1 EMU plug door sealing performance detection device according to claim 1, characterized in that: A heat dissipation port (201) is provided inside the side panel (2), the top panel (9) is movably connected to the front face of the frame (4) via screws, and the inflation port wind pressure gauge (7) penetrates the top panel (9) and is fixedly connected to the inflation port interface (6).

4. A CRH1 EMU plug door sealing performance detection device according to claim 1, characterized in that: A second heat dissipation opening (901) is provided inside the top plate (9), and a third heat dissipation opening (401) is provided on the other side of the frame (4).

5. A CRH1 EMU plug door sealing performance detection device according to claim 1, characterized in that: One end of the inflation nozzle interface (3) penetrates through an inner wall of one side of the frame (4) and the other end of the inflation nozzle interface (3) is fixedly connected to one side of the air pump (8); the inflation nozzle air pressure gauge (1) is fixedly sleeved on the side surface of the inflation nozzle interface (3) via a fixing ring.

6. A CRH1 EMU plug door sealing performance detection device according to claim 1, characterized in that: The inflation port interface (6) penetrates through an inner wall of one side of the frame (4), and the inflation port wind pressure gauge (7) is fixedly sleeved on a side surface of the inflation port interface (6) via a fixing ring.

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