Locomotive door anti-injury device fatigue test system

Abstract

The utility model discloses a fatigue test system for a locomotive door anti-injury device. The fatigue test system comprises a connecting rod mechanism, a driving part, a control cabinet, a counting and angle sensor and an anti-injury device, the anti-injury device is used for connecting the locomotive door leaf and the door frame and providing damping; the counting and angle sensor is installed on the upper portion of the door frame and connected with the control cabinet so as to be used for detecting the number of times, duration and angle of automatic opening and closing of the locomotive door leaf and transmitting data information to the control cabinet. The driving part is mounted at the lower part of the door frame and connected with the control cabinet; one end of the link mechanism is connected with the driving part, and the other end is connected with the locomotive door leaf; the control cabinet sends an instruction to the driving part according to data information fed back by the counting and angle sensor so as to drive the connecting rod mechanism to drive the locomotive door leaf to be automatically closed or opened, and then the fatigue test of the anti-injury device is completed. The device has the advantages of being compact in structure, high in stability, accurate in control and the like, and the testing accuracy of the anti-injury device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of railway locomotive safety, in particular to a fatigue testing system for a locomotive door anti-injury device. Background Art

[0002] The doors of railway locomotives are usually very heavy. In recent years, there have been frequent incidents of people being injured by locomotive doors. Therefore, the anti-injury device for railway locomotive doors has been widely and rapidly promoted and applied on locomotives. The locomotive anti-injury door mainly refers to the installation of an anti-injury device between the door leaf and the door frame on the basis of the conventional locomotive door. The anti-injury device has the function of the locomotive door hinge and provides damping. When the door is closed slowly, the door closes without obstruction. However, when the door is closed quickly and forcefully, the anti-injury device will immediately generate a damping force to delay the closing speed of the door, greatly reducing the probability of people being pinched by the locomotive door.

[0003] Existing anti-injury devices (such as Chinese patent CN209523586U) mostly use spring dampers or hydraulic dampers to achieve damping, but such products are currently in the early stages of product application. Field application feedback shows that there are a lot of fatigue damage or oil leakage in the hydraulic device, which seriously affects the widespread application of locomotive door anti-injury devices. After investigating the manufacturers of anti-injury devices, it was found that due to the heavy weight of locomotive doors, the fatigue verification process of each locomotive door anti-injury device before installation is not sufficient, and it is difficult to meet the fatigue test requirements of railway locomotive door anti-injury devices.

[0004] At present, the test verification of the anti-injury device of railway locomotive doors before leaving the factory is usually carried out by manual push fatigue test verification. For the test process of more than 10,000 times, it is difficult to achieve standardized operation by manual test method, and it is difficult to record the number of times the anti-injury device is opened and closed and the process data. This method is relatively primitive, inefficient and poor in accuracy. Therefore, it is necessary and very important to design a set of automated fatigue test equipment for locomotive door anti-injury devices. Utility Model Content

[0005] The technical problem to be solved by the utility model is: in view of the above-mentioned problems in the prior art, a fatigue testing system for a locomotive door anti-injury device is provided which has a compact structure, convenient operation, high stability and precise control.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A fatigue test system for a locomotive door anti-injury device comprises: a connecting rod mechanism, a driving component, a control cabinet, a counting and angle sensor and an anti-injury device; the anti-injury device is used to realize the connection between the locomotive door leaf and the door frame and provide damping; the counting and angle sensor is installed on the upper part of the door frame, and the counting and angle sensor is connected to the control cabinet, and the counting and angle sensor is used to detect the number, duration and angle of automatic opening and closing of the locomotive door leaf, and transmit the data information to the control cabinet; the driving component is installed on the lower part of the door frame, and the driving component is connected to the control cabinet; one end of the connecting rod mechanism is connected to the output end of the driving component, and the other end of the connecting rod mechanism is connected to the locomotive door leaf; the control cabinet sends a command to the driving component according to the data information fed back by the counting and angle sensor, so as to drive the connecting rod mechanism to drive the locomotive door leaf to automatically close or open, thereby completing the fatigue test of the anti-injury device.

[0008] As a further improvement of the utility model, a PLC controller is provided in the control cabinet, and the PLC controller receives data information transmitted by the counting and angle sensors and sends instructions to the driving components.

[0009] As a further improvement of the present invention, a plurality of control buttons are provided in the control cabinet for selecting a working mode of the control cabinet.

[0010] As a further improvement of the utility model, an alarm device is provided in the control cabinet, and the alarm device includes an alarm indicator light and a roar device.

[0011] As a further improvement of the present invention, a USB interface is provided in the control cabinet for exporting test data.

[0012] As a further improvement of the utility model, the connecting rod mechanism includes a connecting component and a connecting rod, the connecting component is connected to the locomotive door leaf, one end of the connecting rod is connected to the connecting component, and the other end of the connecting rod is connected to the driving component.

[0013] As a further improvement of the utility model, the driving component is a pneumatic cylinder, an oil cylinder or an electric push rod.

[0014] As a further improvement of the present invention, a pressure sensor is provided at the output end of the driving component to detect the output force of the driving component.

[0015] Compared with the prior art, the advantages of the utility model are:

[0016] The utility model discloses a fatigue testing system for a locomotive door anti-injury device, which connects a locomotive door leaf with a door frame by setting an anti-injury device. When the closing speed of the locomotive door leaf is relatively high, the anti-injury device will generate relatively large damping to prevent the locomotive door leaf from closing quickly and injuring people. Moreover, since the anti-injury device also plays a connecting role similar to that of a door hinge, the closing speed and closing angle of the locomotive door leaf are the closing speed and closing angle of the anti-injury device, and the two are highly synchronized. By installing a counting and angle sensor on the upper part of the door frame and connecting the counting and angle sensor to the control cabinet to realize data information transmission, the number, duration and angle of automatic opening and closing of the locomotive door leaf detected by the counting and angle sensor, that is, the number, duration and angle of automatic opening and closing of the anti-injury device are recorded. By installing a counting and angle sensor on the lower part of the door frame and connecting the counting and angle sensor to the control cabinet, data information transmission is realized. The control cabinet connects the driving component to the cabinet, and then connects one end of the connecting rod mechanism to the output end of the driving component, and the other end of the connecting rod mechanism is connected to the locomotive door leaf, so that the automatic opening and closing control of the locomotive door leaf and the anti-injury device is realized; when performing fatigue testing on the anti-injury device, the control cabinet sends instructions to the driving component according to the data information fed back by the counting and angle sensors, so as to drive the connecting rod mechanism to drive the locomotive door leaf to automatically close or open, and by monitoring the number, duration, angle and other relevant data information of the automatic opening and closing of the locomotive door leaf, the fatigue testing of the anti-injury device is automatically completed, which solves the safety hazards of the existing test bench requiring manual long-term testing, and the problem of low data collection accuracy, which is conducive to broadening the scope of application of anti-injury devices in the field of railway locomotives and improving the safety of railway locomotive doors. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structural principle of the fatigue testing system of the anti-injury device for a locomotive door in a specific embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the installation structure principle of the motorcycle door anti-injury device in a specific embodiment of the utility model;

[0019] Legend: 1. Connecting parts; 2. Connecting rod; 3. Driving parts; 4. Control cabinet; 5. Control buttons; 6. PLC controller; 7. Alarm device; 8. USB interface; 9. Counting and angle sensor; 10. Anti-injury device; 11. Locomotive door leaf; 12. Door frame. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0021] In the description of the present invention, it should be understood that the terms "side", "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0023] Example

[0024] like Figure 1 and Figure 2 As shown, the fatigue test system of the locomotive door anti-injury device of the utility model comprises: a connecting rod mechanism, a driving component 3, a control cabinet 4, a counting and angle sensor 9 and an anti-injury device 10. The anti-injury device 10 is used to realize the connection between the locomotive door leaf 11 and the door frame 12 and provide damping. The counting and angle sensor 9 is installed on the upper part of the door frame 12, and the counting and angle sensor 9 is connected to the control cabinet 4. The counting and angle sensor 9 is used to detect the number, duration and angle of the automatic opening and closing of the locomotive door leaf 11, and transmit the data information to the control cabinet 4. The driving component 3 is installed on the lower part of the door frame 12, and the driving component 3 is connected to the control cabinet 4. One end of the connecting rod mechanism is connected to the output end of the driving component 3, and the other end of the connecting rod mechanism is connected to the locomotive door leaf 11. The control cabinet 4 sends a command to the driving component 3 according to the data information fed back by the counting and angle sensor 9, so as to drive the connecting rod mechanism to drive the locomotive door leaf 11 to automatically close or open, thereby completing the fatigue test of the anti-injury device 10.

[0025] In this embodiment, the anti-injury device 10 is provided to connect the locomotive door leaf 11 with the door frame 12. When the closing speed of the locomotive door leaf 11 is high, the anti-injury device 10 will generate a large damping to prevent the locomotive door leaf 11 from closing quickly and injuring people. Since the anti-injury device 10 also plays a connecting role similar to that of a door hinge, the closing speed and closing angle of the locomotive door leaf 11 are the closing speed and closing angle of the anti-injury device 10, and the two are highly synchronized. By installing the counting and angle sensor 9 on the upper part of the door frame 12 and connecting the counting and angle sensor 9 to the control cabinet 4 to realize data information transmission, the number, duration and angle of the automatic opening and closing of the locomotive door leaf 11 detected by the counting and angle sensor 9, that is, the number, duration and angle of the automatic opening and closing of the anti-injury device 10 are recorded. By installing a driving component 3 connected to the control cabinet 4 at the lower part of the door frame 12, and then connecting one end of the connecting rod mechanism to the output end of the driving component 3, and the other end of the connecting rod mechanism to the locomotive door leaf 11, the automatic opening and closing control of the locomotive door leaf 11 and the anti-injury device 10 is realized. When the fatigue test of the anti-injury device 10 is performed, the control cabinet 4 sends a command to the driving component 3 according to the data information fed back by the counting and angle sensor 9, so as to drive the connecting rod mechanism to drive the locomotive door leaf 11 to automatically close or open. By monitoring the number of times, duration and angle of the locomotive door leaf 11 automatically opened and closed, the fatigue test of the anti-injury device 10 is automatically completed, which solves the safety hazards of the existing test bench requiring manual long-term testing and the problem of low data collection accuracy, which is conducive to broadening the application scope of the anti-injury device in the field of railway locomotives and improving the safety of railway locomotive doors.

[0026] like Figure 1 As shown, a PLC controller 6 and a plurality of control buttons 5 are provided in the control cabinet 4. The control buttons 5 include a device start button, a pause button, a regular test button and a fatigue test button, and the working mode of the control cabinet 4 is selected by the control buttons 5. The PLC controller 6 has a touch display screen, and the PLC controller 6 receives data information transmitted by the counting and angle sensors 9 and sends instructions to the driving component 3.

[0027] like Figure 1 As shown, the control cabinet 4 is provided with an alarm device 7 and a USB interface 8. The alarm device 7 includes an alarm indicator light and a roar device, and the USB interface 8 is used for exporting test data.

[0028] like Figure 1As shown, the connecting rod mechanism includes a connecting component 1 and a connecting rod 2. The connecting component 1 is connected to the locomotive door leaf 11 to fix the locomotive door leaf 11. One end of the connecting rod 2 is connected to the connecting component 1, and the other end of the connecting rod 2 is connected to the driving component 3. The connecting rod 2 assists the locomotive door leaf 11 to automatically open and close, thereby realizing the automatic opening and closing of the anti-injury device 10. The specific structures of the connecting component 1 and the connecting rod 2 can adopt conventional settings in the art, and will not be repeated here.

[0029] In this embodiment, the driving component 3 is a cylinder, which is used to provide the power for opening and closing the door. The thrust is a pneumatic swing cylinder, and the power output is completed through a connecting rod mechanism. At the same time, a pressure sensor is installed at the output end of the cylinder, which can simultaneously collect and monitor the magnitude of the output force during each test process, and can also make judgments and detect abnormalities in the connecting rod mechanism. In other embodiments, the driving component 3 can also be an oil cylinder or an electric push rod.

[0030] In this embodiment, the test scheme is designed by designing the number of door opening and closing test tests and the force of cylinder acceleration and deceleration through the PLC controller 6. The content of the test scheme mainly sets the time for a single stroke completion and the total number of door opening and closing times required. The design and application process of the test scheme can be completed directly on the touch screen of the PLC controller 6. The PLC controller 6 is also provided with a safety protection program. When the data fed back by the counting and angle sensors 9 is empty, the cylinder system will stop working, and at the same time, an alarm will be sounded through the alarm device 7. After the fatigue test is automatically completed, the technician can export the test process data through the USB interface 8.

[0031] The working principle of the automatic test system in this embodiment is to write a program to control the movement of the driving component 3 through the PLC controller 6, and to realize the switch test of the anti-injury device 10 by controlling the movement stroke of the driving component 3 and using the connecting component 1 and the connecting rod 2. The automatic switch process of the locomotive door leaf 11 includes the following three steps:

[0032] Step Y1, simulating manual door closing, the driving component 3 drives the locomotive door leaf 11 to close faster, when the included angle of the locomotive door leaf 11 is 20° and the closing speed of the locomotive door leaf 11 is greater than 0.5 m / s, the anti-injury device 10 generates a large damping force to prevent the locomotive door leaf 11 from closing quickly;

[0033] Step Y2, the driving component 3 drives the locomotive door leaf 11 to close at a uniform speed, and the closing speed of the locomotive door leaf 11 is lower than 0.3 m / s until the anti-injury device 10 is completely closed;

[0034] Step Y3, the driving component 3 drives the locomotive door leaf 11 to open, and the anti-injury device 10 changes from a fully closed state to a fully open state, and no damping force is generated in this process.

[0035] Furthermore, when step Y1 is completed, the counting and angle sensor 9 records once, and when the angle of the locomotive door leaf 11 is measured to be less than 20°, the data information is transmitted to the PLC controller 6. Through calculation, the PLC controller 6 issues a control instruction to reduce the output force of the driving component 3 to execute step Y2, realize the uniform closing of the locomotive door leaf 11, and then execute step Y3, the driving component 3 drives the connecting rod mechanism to the maximum opening position, realizes the complete opening of the locomotive door leaf 11, and thus completes a complete opening and closing stroke of the anti-injury device 10. By simulating the process of conventional door closing and the process of sudden and rapid door closing, the total time parameters of the opening and closing process of the anti-injury device 10 are designed.

[0036] Fatigue test system design of the anti-injury device 10 Fatigue test usually has two modes, one is the counting mode, the door opening and closing process of the above three steps is repeated N times, N is usually greater than 10,000 times, and different test times can be designed according to different requirements of the door anti-injury device; the second is the destructive mode, the above three steps are repeated until the product is abnormal. According to the fatigue test requirements of the anti-injury device 10, the PLC controller 6 is set with two modes: counting test mode and destructive test mode.

[0037] During the test, each time the opening action of the anti-injury device 10 is completed, the counting and angle sensor 9 will record the time and number of openings, and feed back to the PLC controller 6. During the closing process of the anti-injury device 10, when the opening of the anti-injury device 10 is about 20° and the closing speed is greater than 0.5m / s, the anti-injury device 10 will generate a damping force of more than 400N to prevent the locomotive door leaf 11 from closing. The test system of this embodiment can generate data report files with the required data, and can be used for later product process analysis and improvement, such as modeling and analyzing the fatigue test process and fatigue life prediction; the test system can be completed automatically by a single machine, and can also complete the collection of test data remotely through networking.

[0038] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A fatigue test system for a locomotive door anti-injury device, characterized in that: include: A connecting rod mechanism, a driving component (3), a control cabinet (4), a counting and angle sensor (9), and an anti-injury device (10); the anti-injury device (10) is used to realize the connection between the locomotive door leaf (11) and the door frame (12) and provide damping; the counting and angle sensor (9) is installed on the upper part of the door frame (12), and the counting and angle sensor (9) is connected to the control cabinet (4), and the counting and angle sensor (9) is used to detect the number, duration and angle of the automatic opening and closing of the locomotive door leaf (11), and transmit the data information to the control cabinet (4). The control cabinet (4) comprises a driving component (3) installed at the lower part of the door frame (12), and the driving component (3) is connected to the control cabinet (4); one end of the connecting rod mechanism is connected to the output end of the driving component (3), and the other end of the connecting rod mechanism is connected to the locomotive door leaf (11); the control cabinet (4) sends a command to the driving component (3) according to the data information fed back by the counting and angle sensor (9), so as to drive the connecting rod mechanism to drive the locomotive door leaf (11) to automatically close or open, thereby completing the fatigue test of the anti-injury device (10).

2. The locomotive door anti-injury device fatigue testing system according to claim 1, characterized in that: The control cabinet (4) is provided with a PLC controller (6), and the PLC controller (6) receives data information transmitted by the counting and angle sensor (9) and sends instructions to the driving component (3).

3. The locomotive door anti-injury device fatigue testing system according to claim 1, characterized in that: The control cabinet (4) is provided with a plurality of control buttons (5) for selecting the working mode of the control cabinet (4).

4. The locomotive door anti-injury device fatigue testing system according to claim 1, characterized in that: The control cabinet (4) is provided with an alarm device (7), and the alarm device (7) comprises an alarm indicator light and a roaring device.

5. The locomotive door anti-injury device fatigue testing system according to claim 1, characterized in that: The control cabinet (4) is provided with a USB interface (8) for exporting test data.

6. The fatigue testing system for a locomotive door anti-injury device according to any one of claims 1 to 4, characterized in that: The connecting rod mechanism comprises a connecting component (1) and a connecting rod (2), wherein the connecting component (1) is connected to a locomotive door leaf (11), one end of the connecting rod (2) is connected to the connecting component (1), and the other end of the connecting rod (2) is connected to a driving component (3).

7. The locomotive door anti-injury device fatigue testing system according to any one of claims 1 to 4, characterized in that: The driving component (3) is an air cylinder, an oil cylinder or an electric push rod.

8. The fatigue testing system for a locomotive door anti-injury device according to any one of claims 1 to 4, characterized in that: The output end of the driving component (3) is provided with a pressure sensor for detecting the output force of the driving component (3).

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