Automobile tail door supporting rod and spring fatigue testing device

Abstract

The utility model discloses an automobile tail door stay bar and spring fatigue testing device, which comprises a testing platform, a spring fatigue testing part, a tail door stay bar fatigue testing part, a control system and a driving system, and is characterized in that the testing platform is used for supporting a tail door stay bar and a large spring part testing frame and adopts a steel frame structure, and the surface of the testing platform adopts a whole thick steel plate; the spring fatigue test part comprises a spring test mounting seat, and the spring test mounting seat is a base for mounting a large spring; the tail door stay bar fatigue test component comprises a stay bar test frame, and a tail door stay bar mounting seat is a base for mounting a tail door stay bar. According to the utility model, the fatigue test of the tail door stay bar and the large spring part can be integrated in one device, so that the test efficiency is greatly improved, the test cost is reduced, and the product quality is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tailgate stay rod and spring fatigue test general type device, which realizes the predetermined function in the test of products and parts, and belongs to the technical field of mechanical testing. BACKGROUND

[0002] In the automobile manufacturing industry, tailgate stay rods and large spring parts are key components that play an important role in maintaining vehicle safety and providing comfort. However, current fatigue test equipment usually only targets a single component, and cannot simultaneously perform fatigue tests on tailgate stay rods and large spring parts. The stay rod and spring use different equipment to complete their respective tests independently, with the equipment being driven to compress and release expansion thousands of times to achieve the purpose of part fatigue testing. This not only increases testing time and cost, but also affects product quality and increases the workload of measurement system analysis.

[0003] Such a product with an independent structure has high manufacturing costs and a complex structure. Therefore, developing an integrated device that can simultaneously perform fatigue tests on tailgate stay rods and large spring parts has high practical value. SUMMARY

[0004] The utility model aims at providing a kind of automobile tailgate stay rod and spring fatigue test device, which can realize the fatigue test integration of tailgate stay rod and large spring part in one device, greatly improve test efficiency, reduce test cost, and ensure product quality.

[0005] The technical scheme of the utility model is as follows:

[0006] A kind of automobile tailgate stay rod and spring fatigue test device, including test platform, spring fatigue test component, tailgate stay rod fatigue test component, control system and drive system,

[0007] The test platform is used to support the tailgate stay rod and large spring part test frame, adopts steel frame structure, and uses a whole thick steel plate to bear the weight of main components on the surface;

[0008] The spring fatigue test component includes a spring test mounting seat, which is a base for installing large springs. The springs are installed in high-strength plastic sleeves, and the spring shape in the stroke is limited by the inner wall of the sleeve and the guide column. The end is connected to the thick steel plate of the test platform through a locking structure;

[0009] The tailgate stay rod fatigue test component includes a stay rod test frame, which is a base for installing tailgate stay rods. The ball sleeves at both ends of the stay rod are installed on the mounting column seat and the coupling, respectively. The axial direction of the stay rod also passes through three limiting through-hole seats.

[0010] Further, the control system: adopt Siemens PLC (ST20) as the main controller, cooperate SMC sensor (M9PVL), SMC cylinder (MDBMDB1L80) and Yadea electromagnetic valve (4V210) as the actuator, then realize automatic test by self-compiled control program; the notification system realizes man-machine interaction with Siemens touch screen (700IE3) through network cable, can set test requirements according to requirements, and display current test state.

[0011] Further, the drive system: adopt 220V power supply and compressed air as driving source, provides required power for driving mechanism and load applying mechanism, and the piston rod A and the piston rod B of the cylinder are connected with the tail door support rod and the front end of the spring respectively to make reciprocating motion.

[0012] Further, all bases are fixedly connected with the test platform through high-strength bolts.

[0013] The beneficial effects of the utility model are: tail door support rod and large spring parts can be placed on the test platform, the driving mechanism drives the tail door support rod and the large spring parts to reciprocate, the control system automatically controls the action of the driving mechanism and the load applying mechanism according to preset parameters, and simultaneously records and processes test data in real time, the energy supply system provides required energy for the driving mechanism, the load applying mechanism and the control system, and the safety protection system monitors test data in real time during the test process, stops the test in time and issues an alarm when an abnormal situation occurs.

[0014] The utility model can realize that the fatigue test of tail door support rod and large spring parts is integrated in one device, greatly improves test efficiency, reduces test cost, and guarantees product quality. ACCURACY

[0015] Fig. 1 It is the overall structure diagram of the utility model,

[0016] Fig. 2 It is the spring fatigue test component schematic view,

[0017] Fig. 3 It is the tail door support rod fatigue test component schematic view.

[0018] Marked in the drawing: 1, test platform, 2, spring test mounting seat, 3, support rod test frame, 4, control system, 5, drive system,

[0019] Thick steel plate 101;

[0020] Locking structure 201, plastic sleeve 202, spring 203, piston rod B 204, guide column 205;

[0021] Supporting rod 301, limiting via seat 302, coupling 303, mounting column seat 304, piston rod A305. DETAILED DESCRIPTION

[0022] The utility model will be further described below by means of drawings and examples.

[0023] Referring to Figs. 1-3 A kind of automobile tailgate supporting rod and spring fatigue testing device, including test platform 1, spring fatigue testing component, tailgate supporting rod fatigue testing component, control system 4 and drive system 5, the test platform 1, for supporting tailgate supporting rod and large spring part test frame, using steel frame structure, surface using whole thick steel plate 101 carries main component weight, to reduce the vibration and deformation generated in testing process;Spring fatigue testing component includes spring test mounting seat 2, the spring test mounting seat 2, for installing the base of large spring, spring 203 is loaded into high-strength plastic sleeve 202, the spring form in stroke is limited by sleeve inner wall and guide column 205;End is connected with the thick steel plate 101 of test platform by locking structure 201;Tailgate supporting rod fatigue testing component includes supporting rod test frame 3, the supporting rod test frame 3, for installing the base of tailgate supporting rod, two end ball sleeve of supporting rod 301 is respectively installed on mounting column seat 304 and coupling 303, and three limiting via seats 302 are distributed on the axial direction of supporting rod 301, prevent the parts from being ejected caused by supporting rod fracture in test process, cause damage to nearby articles and personnel;

[0024] All bases are fixedly connected with test platform 1 by high-strength bolts;

[0025] The control system 4: using PLC as main controller, cooperate sensor, actuator and related control program realizes automation test. Man-machine interaction is realized through touch screen, test requirements are set, and current test state is displayed. Control system 4 has closed-loop control and feedback control function, to ensure the accuracy and stability of movement. The control system also has data storage and transmission function, to facilitate subsequent processing and analysis of test data. Specifically, the control system 4 uses Siemens PLC (ST20) as main controller, cooperates SMC sensor (M9PVL), SMC cylinder (MDBMDB1L80) and Yadea solenoid valve (4V210) as actuator, and then realizes automation test by self-programmed control program;Notification system realizes man-machine interaction through network cable and Siemens touch screen (700IE3), can be set according to requirements Test requirements, and display current test state;

[0026] The driving system 5: adopt 220V power supply and compressed air as driving source, provide required power for driving mechanism and load applying mechanism, the piston rod A305 and the piston rod B204 of the cylinder are connected with the tail door support rod 301 and the front end of the spring 203 respectively and do reciprocating motion.

[0027] The utility model discloses can realize the function of automation, can carry out testing automatically according to preset parameter, and real-time record and handle test data, and control system adopts PLC as main controller, and realizes automation testing with sensor, actuator and relevant control program cooperation, simultaneously, control system still has data storage and transmission function, to facilitate subsequent processing and analysis to test data.

[0028] The above, just for the specific embodiment of the utility model, but the protection scope of the utility model does not limit to this, any skilled in the technical field of technology person in the patent disclosure technical range, can easily think of the change or replacement, all should cover in the protection scope of the utility model, therefore, the protection scope of the utility model should be with the protection scope of the said claim as the criterion.

Claims

1. A fatigue testing device for a car tailgate strut and spring, characterized in that: The system includes a test platform (1), a spring fatigue testing component, a tailgate strut fatigue testing component, a control system (4), and a drive system (5). The test platform (1) is a test frame for supporting the tailgate strut and large spring parts. It adopts a steel frame structure, and the surface uses a single thick steel plate (101) to bear the weight of the main components. The spring fatigue testing component includes a spring test mounting base (2), which is a base for installing the large spring. The spring (203) is installed in a high-strength plastic sleeve. In 202), the spring shape during the stroke is limited by the inner wall of the sleeve and the guide post (205); the end is connected to the thick steel plate (101) of the test platform through the locking structure (201); the tailgate support rod fatigue test component includes a support rod test frame (3), which is a base for installing the tailgate support rod. The ball sleeves at both ends of the support rod (301) are respectively installed on the mounting column seat (304) and the coupling (303). The support rod (301) also passes through three limiting through holes (302) in the axial direction.

2. The fatigue testing device for automobile tailgate struts and springs as described in claim 1, characterized in that: The control system (4) uses a Siemens PLC as the main controller, and SMC sensors, SMC cylinders and Airtac solenoid valves as actuators. The control program is written by the user to realize automated testing. The notification system realizes human-machine interaction through network cable with Siemens touch screen, sets test requirements according to requirements, and displays the current test status.

3. The fatigue testing device for automobile tailgate struts and springs as described in claim 1, characterized in that: The drive system (5) uses 220V power and compressed air as the drive source to provide the required power for the drive mechanism and load application mechanism. The piston rod A (305) and piston rod B (204) of the cylinder are connected to the front end of the tailgate support rod (301) and the spring (203) respectively to perform reciprocating motion.

4. The fatigue testing device for automobile tailgate struts and springs as described in claim 1, characterized in that: All bases are fixedly connected to the test platform (1) by high-strength bolts.

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