Railway vehicle door system operating member service life test device

Abstract

The utility model discloses a service life test device for an operating part of a rail vehicle door system in the rail traffic vehicle door system. The service life test device comprises a driving part; a reset device, a test sample piece is arranged between the reset device and the driving piece, the test sample piece is fixedly arranged, one end of the test sample piece is in transmission connection with the output end of the driving piece, the other end of the test sample piece is connected with the reset end of the reset device through a transmission assembly, and the reset device is used for automatic reset of the transmission assembly; the resistance-adjustable one-way damping device is axially arranged on one side of the reset device and is in transmission connection with the reset device, and the driving part drives the transmission assembly to move so as to enable the one-way damping device to generate damping force; the damping value of the one-way damping device designed in the device can be adjusted according to actual requirements, tests under different working conditions can be met, meanwhile, tests under extreme working conditions can be achieved, influences of the structure of a transmission part are avoided, and high verification credibility is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of rail transit vehicle door systems, and in particular to a life test device for operating parts of a rail vehicle door system. Background Art

[0002] The operating element in a railroad door system manually opens and closes the door when not under automatic control. It's typically used in emergencies and is also known as an emergency unlocking device. Because this device involves passenger escape, high lifespan and reliability requirements are imposed on the operating element, ensuring 50,000 unlocking and resetting cycles without failure.

[0003] Due to the lack of dedicated equipment for endurance testing of operating parts, the typical testing method involves using a motor or pneumatic cylinder on the corresponding vehicle door system to control the unlocking and resetting of the operating parts. This conventional testing method presents several issues: It is difficult to conduct separate and simultaneous type tests for this component, such as the door system open / close life test and the impact and vibration test, making it difficult to quickly draw verification conclusions. Furthermore, since the unlocking torque of the operating part is dependent on the door system status, the length of the unlocking wire rope, and the bending radius, it is difficult to adjust the unlocking torque of the operating part during door system testing. This results in a single test condition that fails to cover extreme operating conditions and reduces verification reliability. Utility Model Content

[0004] The purpose of this application is to provide a life test device for operating parts of a rail vehicle door system, which can perform component-level durability tests on operating parts of different specifications. The test device is small in size, light in weight, and easy to install as samples. By adding or removing one-way hydraulic dampers, it can simulate various loads, control different unlocking torques of the operating device, and achieve full coverage of real working conditions.

[0005] To achieve the above objectives, this application is implemented using the following technical solutions:

[0006] The present application discloses a life test device for operating parts of a rail vehicle door system, which includes:

[0007] driving parts;

[0008] A reset device, wherein a test sample is provided between the reset device and the driving member, the test sample is fixedly arranged and has one end transmission-connected to the output end of the driving member, and the other end is connected to the reset end of the reset device through a transmission assembly, and the reset device is used to automatically reset the transmission assembly;

[0009] A one-way damping device with adjustable resistance is axially arranged on one side of the reset device and is transmission-connected to the reset device, wherein the driving member drives the transmission assembly to move so that the one-way damping device generates a damping force.

[0010] According to a further solution of the present application, the transmission assembly includes a wire rope and a wire drum, the wire drum is installed on the reset device, one end of the wire rope is connected to the driven end of the test specimen, and the other end is wound around the wire drum.

[0011] A further solution is that the reset device includes a fixed mounting frame and a reset spring, a mounting cylinder extending vertically on one side of the mounting frame, a first rotating shaft being axially provided in the mounting cylinder, one end of the first rotating shaft being connected to the axial hole of the wire pulling drum, and the other end being rotatably connected to the one-way damping device, the first rotating shaft axially passes through the reset spring, a pin on one side of the reset spring is fixedly connected to the mounting frame, and a pin on the other side is fixedly connected to the wire pulling drum.

[0012] A further solution of the present application is that the one-way damping device includes a fixed seat, a second rotating shaft and a plurality of one-way hydraulic dampers, the second rotating shaft is rotatably mounted on the fixed seat, one end of the second rotating shaft is transmission-connected to the reset device, the one-way hydraulic damper is axially fixed at the other end of the second rotating shaft, each of the one-way hydraulic dampers is provided with an ear plate on the side, and the plurality of one-way hydraulic dampers are linearly arranged and fixed by bolts, and the one-way hydraulic damper close to the reset device is fixed to the fixed seat.

[0013] In a further solution, the one-way damping device further includes a support seat, which is arranged on a side of the one-way hydraulic damper away from the fixed seat, and the other end of the second rotating shaft is rotatably connected to the support seat.

[0014] In a further solution of the present application, the driving member is one of a servo motor and a rotary cylinder.

[0015] According to a further solution of the present application, the test device further comprises a profile bracket, and the driving member, the reset device, the test specimen and the one-way damping device are fixed on one side of the profile bracket.

[0016] According to a further solution of the present application, the test specimen and the one-way damping device are staggered in the same plane.

[0017] The beneficial effects of this application are:

[0018] In this application, the test sample is fixed separately and can be tested simultaneously with other components of the door system. The damping value of the one-way damping device designed in the device can be adjusted according to actual needs, which can meet the needs of tests under different working conditions. At the same time, it can realize tests under extreme working conditions, is not affected by the structure of the transmission parts, and has a high verification credibility.

[0019] A reset device is provided at one end of the one-way damping device, and the transmission assembly uses a steel wire rope and a cable drum. The installation of a reset spring in the reset device can ensure that the steel wire rope has a certain expansion during use, and the cable drum can be automatically reset, which is convenient for repeated testing of the device, avoids the disadvantage of repeatedly winding the steel wire rope, and improves the efficiency of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a life test device for operating parts of a rail vehicle door system according to an embodiment of the present application;

[0021] Figure 2 This is a side view of a life test device for operating parts of a rail vehicle door system according to an embodiment of the present application;

[0022] Figure 3 This is a top view of a life test device for operating parts of a rail vehicle door system according to an embodiment of the present application;

[0023] Figure 4 This is a schematic diagram of the structure of the reset device in the embodiment of the present application;

[0024] Figure 5 This is a schematic diagram of the combined structure of the first rotating shaft and the wire pulling drum in the embodiment of the present application;

[0025] Figure 6 This is a schematic structural diagram of a one-way damping device in an embodiment of the present application;

[0026] Figure 7 This is a schematic diagram of the structure of a one-way hydraulic damper in an embodiment of the present application.

[0027] Among them: 1. Driving part; 2. Test sample; 3. Profile bracket; 4. Wire rope; 5. Reset device; 6. One-way damping device; 51. First rotating shaft; 52. Mounting frame; 53. Reset spring; 54. Wire drum; 541. Shaft hole; 61. One-way hydraulic damper; 62. Fixed seat; 63. Coupling; 64. Second rotating shaft. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only some embodiments of the present application, rather than all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present application, its application, or use.

[0029] like Figures 1 to 3As shown, in this embodiment, a rail vehicle door system operating component life test device is provided, which includes a driving component 1, a reset device 5, a one-way damping device 6 with adjustable resistance, and a profile bracket 3, wherein a test sample 2 is fixed on the profile bracket 3, the driving component 1 and the test sample 2 are arranged on the same side, the output shaft of the driving component 1 is connected to the input end of the test sample 2, the reset device 5 and the one-way damping device 6 are axially transmitted, the reset device 5 and the output end of the test sample 2 are connected through a transmission assembly, the reset device 5 is used for automatic resetting of the transmission assembly, and the reset device 5 and the test sample 2 are staggered on the plane of the profile bracket 3.

[0030] When in use, start the driving member 1 to drive the test sample 2 forward and reverse. When rotating forward, the output end of the test sample 2 drives the reset device 5 and the one-way damping device 6 to work through the action of the rotating assembly. Since the one-way damping device 6 has a one-way damping effect, as shown in the attached figure, Figure 7 As shown, in this embodiment, when the driving member 1 is set to rotate forward, the one-way damping device 6 produces a damping effect;

[0031] When the driving member 1 reverses, the transmission assembly is reset under the action of the reset device 5 to facilitate the next test. During the process, the one-way damping device 6 does not produce a damping effect. By adding damping parts to the one-way damping device 6 according to actual needs, the coverage of the device working conditions can be achieved.

[0032] As attached Figure 1 、 Figure 4 、 Figure 5 As shown, in this embodiment, the transmission assembly uses a wire rope 4 and a cable drum 54. One end of the wire rope 5 is fixed to the driven end (output end) of the test sample 2, and the other end is wound around the cable drum 54. The cable drum 54 is installed in the reset device 5. The reset device 5 is forced to move to generate a restraining force. The release of the restraining force drives the cable drum 54 to perform a reset action.

[0033] In some other embodiments, a gear combination is selected to replace the wire rope 4 and the pull drum 54, which also has a good transmission effect and can meet the test of larger power torque under special circumstances. This embodiment has advantages when used when the test sample 2 has gears or a toothed structure.

[0034] The reset device 5 in this embodiment includes a reset spring 53, a mounting frame 52 and a first rotating shaft 51. The reset action of the device is mainly achieved by the deformation of the reset spring 53. The mounting frame 52 is fixed to the profile bracket 3 by bolts. A mounting cylinder is vertically extended on one side of the mounting frame 5. The reset spring 53 is axially arranged in the mounting cylinder. The first rotating shaft 51 axially passes through one end of the reset spring 5 and is fixedly connected to the wire pull drum 54. During production, a square shaft hole 541 is opened in the middle of the wire pull drum 54. The cross-section of the first rotating shaft 5 close to the wire pull drum 54 is designed to be a square that matches the shaft hole 541. The two are fixed by an interference fit connection. The other end of the first rotating shaft 5 is transmission-connected to the one-way damping device 6.

[0035] During operation, the driving member 1 rotates forward, and the output end of the test sample 2 pulls and reels the wire rope 4. At this time, the first rotating shaft 51 and the wire drum 54 rotate. While rotating, the reset spring 53 deforms and generates a restraining force. Due to the power constraint of the driving member 1, it cannot be released. After the driving member 1 reverses, the constraint on the reset spring 53 will be released. The reset spring 5 drives the wire drum 5 to reset in the process of recovering the deformation. During this period, the wire rope 4 is also reset to prepare for the next test and improve the efficiency of the test. It should be noted here that although the reset spring 5 will also provide a certain amount of damping, this damping amount can be omitted, and this part of the quantity will be measured and removed in the test calculation.

[0036] As attached Figure 1 and Figure 6 As shown, in this embodiment, the fixing seat 42 and two one-way hydraulic dampers 61 are fixed to the profile bracket 3 by bolts. The fixing seat 42 is arranged away from the wire drum 54. A second rotating shaft 64 is rotatably mounted on the fixing seat 42. One end of the second rotating shaft 64 is connected to the first rotating shaft 5 through a coupling 63. The one-way hydraulic damper 61 is axially fixed to the other end of the second rotating shaft 64. An ear plate is provided on the side of each one-way hydraulic damper 61. The two one-way hydraulic dampers 61 are arranged linearly and fixed by bolts. When actually installing, the adjacent The two ear plates are locked by bolts, and the one-way hydraulic damper 61 on the far left is fixed to the fixing seat 42 with bolts. During actual testing, the model of the one-way hydraulic damper 61 is selected according to the damping torque during the test, and the assembly quantity is increased or decreased. In this embodiment, a support seat is also added, and the support seat fixes the right side of the one-way hydraulic damper 61. The other end of the second rotating shaft 64 is rotatably connected to the support seat. The setting of the support seat can enhance the stability of the hydraulic damper 61 during operation, prevent jitter, shaking, etc. during long-term use, and ensure the accuracy of the test results.

[0037] Typically, the driving component 1 uses a servo motor or a rotary cylinder.

[0038] Specific use:

[0039] The test sample 2 is fixed on the bracket, and the two ends of the test sample 2 are correspondingly connected to the driving member 1 and the wire rope 4. When the driving member 1 drives the operating member (test sample 2) to rotate forward to perform the unlocking action, the wire rope 4 pulls the pull drum 54 to rotate. At this time, the first rotating shaft 51 in the square hole of the pull drum 54 and the second rotating shaft 64 in the one-way damping device 6 rotate, and finally the torque generated by the one-way hydraulic damper 61 is transmitted to the test sample 2, simulating the load when the car door is unlocked. During the test, various unlocking torques can be adjusted by increasing or decreasing the number of one-way hydraulic dampers 61, or changing the specifications.

[0040] When the driving member 1 drives the operating member (test sample 2) to reverse and reset, the one-way damper 61 does not generate resistance, and the pull drum 54 is reset under the action of the reset torsion spring 53. Repeat the above steps to test the test sample 2 repeatedly.

[0041] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" 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 application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

Claims

1. A life test device for operating parts of a rail vehicle door system, characterized in that: include: A driving member (1); A reset device (5), wherein a test sample (2) is provided between the reset device (5) and the driving member (1), the test sample (2) is fixedly arranged and has one end connected to the output end of the driving member (1) by transmission, and the other end is connected to the reset end of the reset device (5) through a transmission component, and the reset device (5) is used for automatic reset of the transmission component; A one-way damping device (6) with adjustable resistance, wherein the one-way damping device (6) is axially arranged on one side of the reset device (5) and is transmission-connected to the reset device (5), wherein the driving member (1) drives the transmission assembly to move, so that the one-way damping device (6) generates a damping force.

2. The rail vehicle door system operating parts life test device according to claim 1, characterized in that: The transmission assembly comprises a steel wire rope (4) and a cable drum (54), wherein the cable drum (54) is mounted on the reset device (5), one end of the steel wire rope (4) is connected to the driven end of the test specimen (2), and the other end is wound around the cable drum (54).

3. The rail vehicle door system operating parts life test device according to claim 2, characterized in that: The reset device (5) includes a fixed mounting frame (52) and a reset spring (53), a mounting tube extending vertically from one side of the mounting frame (52), a first rotating shaft (51) being axially arranged in the mounting tube, one end of the first rotating shaft (51) being connected to the shaft hole (541) of the wire pull drum (54), and the other end being rotatably connected to the one-way damping device (6), the first rotating shaft (51) axially passes through the reset spring (53), a pin on one side of the reset spring (53) being fixedly connected to the mounting frame (52), and a pin on the other side being fixedly connected to the wire pull drum (54).

4. The rail vehicle door system operating parts life test device according to claim 1, characterized in that: The one-way damping device (6) includes a fixed seat (42), a second rotating shaft (64) and a plurality of one-way hydraulic dampers (61), wherein the second rotating shaft (64) is rotatably mounted on the fixed seat (42), one end of the second rotating shaft (64) is transmission-connected to the reset device (5), and the one-way hydraulic damper (61) is axially fixed to the other end of the second rotating shaft (64), and each one-way hydraulic damper (61) is provided with an ear plate on the side, and the plurality of one-way hydraulic dampers (61) are linearly arranged and fixed by bolts, and the one-way hydraulic damper (61) close to the reset device (5) is fixed to the fixed seat (42).

5. The rail vehicle door system operating parts life test device according to claim 4, characterized in that: The one-way damping device (6) further comprises a support seat, which is arranged on a side of the one-way hydraulic damper (61) away from the fixed seat (42), and the other end of the second rotating shaft (64) is rotatably connected to the support seat.

6. The rail vehicle door system operating parts life test device according to claim 1, characterized in that: The driving component (1) is one of a servo motor and a rotary cylinder.

7. The rail vehicle door system operating parts life test device according to claim 1, characterized in that: The test device further comprises a profile bracket (3), and the driving member (1), the reset device (5), the test specimen (2), and the one-way damping device (6) are fixed on one side of the profile bracket (3).

8. The rail vehicle door system operating component life test device according to any one of claims 1 to 7, characterized in that: The test specimen (2) and the one-way damping device (6) are arranged in a staggered manner in the same plane.

Images