A device for detecting fatigue life of outer windshield capsule of rail vehicle

Abstract

A device for testing the fatigue life of outer windshield capsules on rail vehicles is characterized by comprising a main support frame, a control box, a motor, an eccentric wheel, a slide, a tensioning roller, a tension spring, and a tension sensor. The motor shaft is connected to the slide via a transmission mechanism, which engages a slideway and has a transverse, elongated hole for the capsule to pass through. A tensioning roller is mounted on the main support frame, in frictional contact with the capsule to simulate the tensile force exerted on the capsules by friction between two vehicles when they negotiate a curve. A tensioning spring is attached to the underside of the tensioning roller, which is equipped with a tension sensor. This simple and compact testing device utilizes the mechanism to drive the capsules in reciprocating motion, simulating the capsule's deformation process and completing fatigue life testing of the outer windshield capsules. The device is compact, inexpensive, and fast. It occupies one square meter and is one meter high, costs approximately 100,000 yuan, and completes a test cycle of 20,000 times in six hours.

Description

Technical Field

[0001] The present invention belongs to the technical field of rail vehicle component design and detection, and in particular relates to a windshield design for a vehicle end system of an EMU. Background Art

[0002] In order to detect the fatigue life of the outer windshield capsule of the EMU, the commonly used detection device and method in the industry are: using a curve displacement test bench, the outer windshield sample is installed on the test bench with reference to the actual vehicle state. The test bench simulates the relative movement of the vehicle during curve displacement. After the test bench completes a certain number of reciprocating motions, the state of the outer windshield capsule is observed.

[0003] The test benches commonly used in the industry are currently large in size, occupying an area of about 24 square meters and 4 meters in height; they are expensive, with one test bench costing 2 million yuan; the testing process is slow, and it takes 7 days to complete a test cycle of 20,000 times. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for detecting the fatigue life of an outer windshield capsule with a simple structure, small footprint, low price and high detection speed, so as to solve the problem that the current detection test bench is bulky.

[0005] The problem is that the price is high and the testing cycle is long.

[0006] In order to achieve the above-mentioned purpose of the invention, the present invention provides a detection device for the fatigue life of the outer windshield capsule of a rail vehicle, which is characterized by: including a main support frame, a control box, a motor, an eccentric wheel, a skateboard, a tensioning roller, a tension spring, and a tension sensor. The motor shaft is connected to the skateboard through a transmission mechanism, the skateboard cooperates with the slideway, and a transverse elongated hole for the capsule to pass through is opened on the skateboard. A tensioning roller is provided on the main support frame. The tensioning roller is in friction contact with the capsule, and is used to simulate the tension exerted on the capsule between the two vehicles when the vehicles pass through a curve due to mutual friction and pulling. The tension spring is connected under the tensioning roller, and a tension sensor is provided on the tension spring.

[0007] Furthermore, the transmission mechanism is connected to an eccentric wheel on the motor shaft, the eccentric wheel is connected to a traction rod, and the traction rod is movably connected to the slide plate to drive the sliding movement forward and backward.

[0008] Furthermore, a mounting column is provided on each side of the main support frame, a sleeve is gap-fitted on the mounting column, and the tensioning roller is installed between the two sleeves.

[0009] Furthermore, two front and rear sliding blocks are provided on both sides of the lower side of the skateboard, and the sliding blocks slide in cooperation with the slideway to drive the skateboard to move forward and backward.

[0010] Furthermore, a tension digital display meter and a counter meter are provided on the front of the control box for displaying the tension and reciprocating motion times of the capsule in real time.

[0011] Furthermore, height adjustment frames are installed at the four corners of the main support frame, the height adjustment frames are fixed to the support columns by screws, and the slides are installed on the height adjustment frames.

[0012] Furthermore, a spring is provided under the height adjustment frame for shock absorption.

[0013] This invention uses a segmented capsule for testing, designing a simple and compact testing device. The mechanism drives the capsule in reciprocating motion, simulating its deformation process and completing fatigue life testing of the exterior windshield capsule. The device is compact, inexpensive, and offers rapid testing speed. It occupies one square meter and stands one meter tall, costs approximately 100,000 yuan, and completes a single test cycle of 20,000 repetitions in six hours. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A side view of the device;

[0015] Figure 2 This is a front view of the device. DETAILED DESCRIPTION

[0016] Reference Figure 1 、 Figure 2 The entire device mainly includes a main support frame 1, a control box 2, a motor 3, an eccentric wheel 4, a slide 5, a slider 6, a height adjustment frame 7, a tension roller 8, a tension spring 9, a tension sensor 10, a capsule 11, a traction rod 13, a slide 14, a sleeve 15, a mounting column 16, and a support column 17. The motor shaft is connected to the eccentric wheel 4, which is connected to the traction rod 13. The traction rod is connected to the slide 14. Two sliders 6 are provided on each side of the slide 14. The sliders 6 are installed on the slide 5 with a gap. The slide 14 has a transverse elongated hole 12. A mounting column 16 is provided on each side of the main support frame. The mounting column 16 is equipped with a sleeve 15. The tension roller 8 is connected between the two sleeves. After the capsule 11 passes around the tension roller 8, the two ends pass through the transverse elongated holes 12 on the slide and are fixed to the main support frame 1. The slide 5 is mounted on the height adjustment frame 7, which is fixed to the support column 17 with screws. The support column is fixed to the four corners of the main support frame 11. The height of the slide plate and the slider can be adjusted by loosening the screws. A spring 18 is provided below the height adjustment frame for shock absorption.

[0017] During operation, capsule 11 is secured to the main support frame 1, and the detection device is started and stopped by control box 2. Motor 3 begins rotating, driving eccentric wheel 4, which in turn drives traction rod 13 and slide plate 14 to reciprocate forward and backward within a specified range, pushing capsule 11 back and forth. A tension roller 8 contacts capsule 11, and a tension spring 9 connected to roller 8 applies a downward force to capsule 11. The magnitude of this force is detected by tension sensor 10. Tension roller 8 simulates the tension exerted by friction between two vehicles on capsule 11 as they negotiate a curve. By adjusting the relative position of tension spring 9 and tension sensor 10, varying tensions can be simulated. By varying the relative position of slide block 6 and capsule 11, various deformation angles and processes can be simulated. A tension digital display and counter are located on the front of control box 2, providing real-time information on the tension exerted on capsule 11 and the number of reciprocating movements. A running indicator light and a stop light indicate the operating status of the detection device.

Claims

1. A device for detecting fatigue life of a rail vehicle outer windshield capsule, characterized in that: It includes a main support frame, a control box, a motor, an eccentric wheel, a slide plate, a tension roller, a tension spring, and a tension sensor. The motor shaft is connected to the slide plate through a transmission mechanism. The slide plate cooperates with the slideway. The slide plate is provided with a transverse elongated hole for the capsule to pass through. The main support frame is provided with a tension roller. The tension roller is in frictional contact with the capsule to simulate the tension exerted on the capsule between the two vehicles when the vehicles pass through a curve. The tension spring is connected under the tension roller, and the tension spring is provided with a tension sensor. The front of the control box is provided with a tension digital display meter and a counter meter for displaying the tension and reciprocating motion times of the capsule in real time; The transmission mechanism is connected to an eccentric wheel on the motor shaft, the eccentric wheel is connected to a traction rod, the traction rod is movably connected to the slide, the eccentric wheel drives the traction rod and the slide to reciprocate in a specified range, and pushes the capsule to reciprocate in the front and back directions.

2. The device for detecting fatigue life of a rail vehicle outer windshield capsule according to claim 1, characterized in that: A mounting column is respectively arranged on both sides of the main support frame, a sleeve is fitted in the gap on the mounting column, and the tensioning roller is arranged between the two sleeves.

3. The device for detecting fatigue life of a rail vehicle outer windshield capsule according to claim 1, characterized in that: Two front and rear sliding blocks are provided on both sides of the bottom of the skateboard. The sliding blocks cooperate with the slideway to drive the skateboard to move forward and backward.

4. The device for detecting fatigue life of a rail vehicle outer windshield capsule according to claim 1, characterized in that: It also includes height adjustment frames installed at the four corners of the main support frame, the height adjustment frames are fixed to the support columns through screws, and the slides are installed on the height adjustment frames.

5. The device for detecting fatigue life of a rail vehicle outer windshield capsule according to claim 4, characterized in that: A spring is provided under the height adjustment frame for shock absorption.

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