A data acquisition device for vehicle frame assembly design

Abstract

The utility model discloses a data acquisition device for frame assembly design, which belongs to the field of automobile parts testing technology, including a crossbeam, columns vertically fixed at both ends of the bottom of the crossbeam, a data acquisition device installed on the outside of the columns to collect test data, and an actuator hingedly installed at both ends of the bottom of the crossbeam, a torsion beam is arranged in parallel below the crossbeam, both ends of the top of the torsion beam are installed with hinge seats, and the bottom ends of the actuator are respectively connected to the shaft rod on the hinge seat. The utility model arranges a fixed block on the inner side of the column, an upper arc groove is opened on the top of the inner side of the fixed block, and the arc radius length of the upper arc groove is equal to the length of the shaft rod on the hinge seat and the proximal end of the torsion beam, and a lower arc groove is opened on the bottom of the inner side of the fixed block, and the arc radius length of the lower arc groove is equal to the length of the shaft rod on the hinge seat and the distal end of the torsion beam. Therefore, during the torsion test, the lateral displacement of the torsion beam can be avoided, thereby ensuring the effect of the torsion test and the accuracy of data acquisition.

Description

Technical Field

[0001] The utility model relates to a data acquisition device, in particular to a frame assembly design data acquisition device, belonging to the technical field of automobile component testing. Background Art

[0002] In the prior art, the invention with application number 201820579706.1 discloses a frame torsion fatigue test bench. In order to solve the problem of over-constraint in the torsion test of the frame assembly in the domestic test device, the stress state of the sample is quite different from the working state on the actual vehicle, so the failure form is also obviously different from the actual vehicle. The test method and evaluation system are somewhat one-sided and cannot meet the requirements for accurate evaluation of the reliability of the frame assembly. The front end of the frame assembly is directly connected to the gantry through the front simulated suspension and the torsion beam through two hydraulic servo actuators, and the rear end of the frame is connected to the iron floor through the rear simulated suspension and the rear suspension support. The front and rear suspensions are installed and fixed according to the installation form of the actual vehicle suspension, and the simulated suspensions are all high-strength rigid beams. The two hydraulic servo actuators apply force to the end of the torsion beam to simulate the torsion caused by the bouncing of the front suspension tire of the car. The rotation center is not fixed to release the degree of freedom, and the frame torsion stiffness, torsion stress, torsion fatigue and other tests can be carried out. The rear simulated suspension is fixed on the rear suspension support to ensure the longitudinal stability of the frame torsion test. The frame torsional fatigue test bench with free front-end constraints ensures that the stress state of the frame is consistent with the full-load state of the actual vehicle, thereby more realistically simulating the actual working conditions.

[0003] Similar to the above application, there are still some shortcomings:

[0004] During the torsion test and frame data collection, the top of the actuator is hinged on the gantry, and the bottom is also hinged to the torsion beam. During the torsion test, the torsion beam will move laterally, which will cause the frame to swing laterally, affecting the effect of the torsion test and the accuracy of data collection.

[0005] Therefore, a frame assembly design data acquisition device is designed to optimize the above-mentioned problems. Utility Model Content

[0006] The main purpose of the utility model is to provide a frame assembly design data acquisition device, by arranging a fixed block on the inner side of the column, an upper arc groove is opened on the top of the inner side of the fixed block, the arc radius length of the upper arc groove is equal to the length of the shaft rod on the hinge seat and the proximal end of the torsion beam, and a lower arc groove is opened on the bottom of the inner side of the fixed block, the arc radius length of the lower arc groove is equal to the length of the shaft rod on the hinge seat and the distal end of the torsion beam. Therefore, during the torsion test, lateral displacement of the torsion beam can be avoided, ensuring the effect of the torsion test and the accuracy of data acquisition. By arranging a frame fixing mechanism composed of a horizontal plate, a through groove, a sliding rod, a bidirectional screw, a worm gear, a worm, an extrusion block, and a spring leaf on the top of the torsion beam, the position of the frame is fixed by extrusion, and the installation and fixation are faster and more practical.

[0007] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0008] A frame assembly design data acquisition device includes a crossbeam, columns vertically fixed at both ends of the bottom of the crossbeam, a data acquisition device installed on the outside of the columns to collect test data, and actuators hingedly installed at both ends of the bottom of the crossbeam. A torsion beam is arranged in parallel below the crossbeam, and both ends of the top of the torsion beam are installed with hinge seats. The bottom end of the actuator is respectively connected to the shaft rod on the hinge seat, and a frame fixing mechanism is provided at the middle position of the top of the torsion beam. A fixing block is fixed on the side of the column close to the torsion beam, and an upper arc groove is opened on the top of the fixing block close to the torsion beam. A lower arc groove is provided at the bottom of the upper arc groove, and the upper arc groove is connected to the end of the lower arc groove. The end of the torsion beam fits at the connection between the upper arc groove and the lower arc groove.

[0009] Preferably, the arc radius of the upper arc groove is equal to the distance between the shaft rod on the articulated seat and the proximal end of the torsion beam, and the arc radius of the lower arc groove is equal to the distance between the shaft rod on the articulated seat and the distal end of the torsion beam.

[0010] Preferably, both ends of the torsion beam are arc-shaped, and the outer side of the torsion beam is coated with a wear-resistant coating.

[0011] Preferably: the frame fixing mechanism includes a cross plate, a through slot, a sliding rod and a telescopic component, the cross plate is fixed at the middle position of the top of the torsion beam, a through slot is provided between the two ends of the cross plate, sliding rods are slidably provided at both ends of the through slot, and a telescopic component for controlling the sliding of the sliding rod is provided at the middle position of the through slot.

[0012] Preferably: the telescopic assembly includes a bidirectional screw, a worm wheel and a worm, the bidirectional screw is arranged along the length direction of the cross plate and rotatably installed inside the cross plate, the two ends of the bidirectional screw are respectively threadedly connected to the sliding rod, the worm wheel is fixedly installed at the middle position of the bidirectional screw, and the worm is meshed with the bottom of the worm wheel.

[0013] Preferably, both ends of the worm extend to the outside of the transverse plate, and both ends of the worm are equipped with adjusting wheels.

[0014] Preferably, an extrusion block is hingedly mounted symmetrically up and down on one end of the slide rod away from the horizontal plate, and a spring sheet is arranged between the two groups of extrusion blocks, and the ends of the extrusion blocks are all provided with anti-slip grooves.

[0015] The beneficial effects of the utility model are:

[0016] The utility model provides a frame assembly design data acquisition device, which arranges a fixed block on the inner side of a column, an upper arc groove is provided on the top of the inner side of the fixed block, and the arc radius length of the upper arc groove is equal to the length of the shaft rod on the articulated seat and the proximal end of the torsion beam, and a lower arc groove is provided on the bottom of the inner side of the fixed block, and the arc radius length of the lower arc groove is equal to the length of the shaft rod on the articulated seat and the distal end of the torsion beam, so that in the process of torsion test, lateral displacement of the torsion beam can be avoided, thereby ensuring the effect of the torsion test and the accuracy of data acquisition;

[0017] A frame fixing mechanism consisting of a horizontal plate, a through groove, a sliding rod, a bidirectional screw, a worm gear, a worm, an extrusion block and a spring leaf is arranged on the top of the torsion beam, and the position of the frame is fixed by extrusion, so that the installation and fixing is faster and more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the main structural diagram of the utility model;

[0019] Figure 2 This is a front cross-sectional view of the utility model;

[0020] Figure 3 It is a fixed block diagram of the utility model;

[0021] Figure 4 This is a diagram of the positioning mechanism of the utility model.

[0022] In the figure: 1. column; 2. crossbeam; 3. data acquisition device; 4. actuator; 5. torsion beam; 6. hinge seat; 7. frame fixing mechanism; 8. fixing block; 9. upper arc groove; 10. lower arc groove; 11. cross plate; 12. through groove; 13. sliding rod; 14. bidirectional screw; 15. worm gear; 16. worm; 17. extrusion block; 18. spring. DETAILED DESCRIPTION

[0023] In order to make the technical solution of the utility model more clear and specific to those skilled in the art, the utility model is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the utility model are not limited thereto.

[0024] like Figure 1-Figure 4As shown, this embodiment provides a frame assembly design data acquisition device, including a crossbeam 2, a column 1 vertically fixed at both ends of the bottom of the crossbeam 2, a data acquisition device 3 installed on the outside of the column 1 to collect test data, and an actuator 4 hingedly installed at both ends of the bottom of the crossbeam 2, a torsion beam 5 is arranged in parallel below the crossbeam 2, both ends of the top of the torsion beam 5 are installed with hinge seats 6, the bottom ends of the actuator 4 are respectively connected to the shaft rods on the hinge seats 6, a frame fixing mechanism 7 is provided at the middle position of the top of the torsion beam 5, a fixing block 8 is fixed on one side of the column 1 close to the torsion beam 5, an upper arc groove 9 is opened on the top of the fixing block 8 close to the torsion beam 5, a lower arc groove 10 is provided at the bottom of the upper arc groove 9, the upper arc groove 9 is connected to the end of the lower arc groove 10, and the end of the torsion beam 5 is fitted at the connection between the upper arc groove 9 and the lower arc groove 10.

[0025] General working principle: Before the torsion test, the frame is horizontally placed on the top of the torsion beam 5, and one end of the frame away from the torsion beam 5 is fixed, and then the other end of the frame is fixed to the torsion beam 5 by using the frame fixing mechanism 7. Multiple groups of displacement sensors are installed at the center of the lower wing surface of the longitudinal beam on one side of the tested frame assembly. The spacing between the displacement sensors is set at unequal intervals. Stress sensors are installed at the stress concentration points of the longitudinal beam or cross beam of the tested frame assembly to measure the stress value. The stress concentration points include: the inner center of the engine cross beam, the inner center of the transmission cross beam , the upper side of the transmission connecting bolt, the upper side of the rear lifting ear of the forearm, the arch of the middle middle cross beam, the middle middle cross beam connecting bolt, the inner center of the balance shaft cross beam, the upper side of the balance shaft cross beam connecting bolt, the upper wing surface of the frame tail and the lower wing surface of the frame tail. During the test, the two groups of actuators 4 are alternately extended and retracted to control the frame to twist, and the data acquisition device 3 is used to collect the data of the sensor. At the same time, during the torsion of the frame, the end of the torsion beam 5 slides on the inner side of the upper arc groove 9 and the lower arc groove 10 to limit the position of the torsion beam 5 to prevent the torsion beam 5 from lateral displacement.

[0026] In this embodiment, the arc radius of the upper arc groove 9 is equal to the distance between the upper shaft rod of the hinge seat 6 and the proximal end of the torsion beam 5, and the arc radius of the lower arc groove 10 is equal to the distance between the upper shaft rod of the hinge seat 6 and the distal end of the torsion beam 5.

[0027] Local working principle: during the swinging process of the torsion beam 5 , the end portion is always in contact with the inner side of the lower arc groove 10 or the upper arc groove 9 , thus limiting the position of the torsion beam 5 .

[0028] In this embodiment, both ends of the torsion beam 5 are arc-shaped, and the outer side of the torsion beam 5 is coated with a wear-resistant coating.

[0029] Local working principle: During the torsion test, the end of the torsion beam 5 will rub against the arc groove, and the provision of the wear-resistant coating can reduce the wear of the end of the torsion beam 5.

[0030] In this embodiment, the frame fixing mechanism 7 includes a cross plate 11, a through groove 12, a sliding rod 13 and a telescopic assembly. The cross plate 11 is fixed at the middle position on the top of the torsion beam 5. A through groove 12 is formed between the two ends of the cross plate 11. Both ends inside the through groove 12 are slidably provided with sliding rods 13. A telescopic assembly for controlling the sliding of the sliding rods 13 is provided at the middle position inside the through groove 12.

[0031] Local working principle: When fixing the frame, the cross plate 1 is located between the frames. The sliding rods 13 are aligned with the longitudinal beams of the frame. The telescopic assembly is used to control the sliding rods 13 to move towards the longitudinal beams of the frame, so as to squeeze and fix the frame.

[0032] In this embodiment, the telescopic assembly includes a bidirectional screw 14, a worm gear 15 and a worm 16. The bidirectional screw 14 is arranged along the length direction of the cross plate 11 and is rotatably installed inside the cross plate 11. The two ends of the bidirectional screw 14 are respectively threadedly connected to the sliding rods 13. A worm gear 15 is fixedly installed at the middle position of the bidirectional screw 14. A worm 16 is engaged with the bottom of the worm gear 15.

[0033] Local working principle: Rotate the worm 16 to control the rotation of the worm gear 15. The worm gear 15 drives the rotation of the bidirectional screw 14, and at the same time controls the two groups of sliding rods 13 to move towards the longitudinal beams of the frame, which can not only fix the position, but also correct the position of the frame.

[0034] In this embodiment, both ends of the worm 16 extend to the outside of the cross plate 11, and adjusting wheels are installed at the ends of the worm 16.

[0035] Local working principle: The use of the adjusting wheels at the ends of the worm 16 can facilitate the rotation operation of the worm 16.

[0036] In this embodiment, the end of the sliding rod 13 away from the cross plate 11 is symmetrically hinged with extrusion blocks 17 up and down. A reed 18 is provided between the two groups of extrusion blocks 17. Anti-slip patterns are provided at the ends of the extrusion blocks 17.

[0037] Local working principle: Since the shape of the longitudinal beam is C-shaped, when the sliding rod 13 moves towards the longitudinal beam, the extrusion blocks 17 first contact the inner side surface of the longitudinal beam and expand the two groups of extrusion blocks 17 outwards. The extrusion blocks 17 respectively abut against the upper and lower end faces of the longitudinal beam, improving the stability during fixation.

[0038] The above is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the scope disclosed by the present invention, according to the technical solution and concept of the present invention, makes equivalent substitutions or changes, all belong to the protection scope of the present invention.

Claims

1. A frame assembly design data acquisition device, comprising a crossbeam (2), columns (1) vertically fixed at both ends of the bottom of the crossbeam (2), a data acquisition device (3) installed outside the column (1) for collecting test data, and an actuator (4) hingedly installed at both ends of the bottom of the crossbeam (2), characterized in that: A torsion beam (5) is arranged parallel to the lower side of the cross beam (2), and hinge seats (6) are installed at both ends of the top of the torsion beam (5). The bottom ends of the actuator (4) are respectively connected to the shaft rods on the hinge seats (6). A frame fixing mechanism (7) is arranged at the middle position of the top of the torsion beam (5). A fixing block (8) is fixed on the side of the column (1) close to the torsion beam (5). An upper arc groove (9) is opened on the top of the side of the fixing block (8) close to the torsion beam (5). A lower arc groove (10) is arranged at the bottom end of the upper arc groove (9). The upper arc groove (9) is connected to the end of the lower arc groove (10), and the end of the torsion beam (5) is fitted at the connection between the upper arc groove (9) and the lower arc groove (10).

2. The vehicle frame assembly design data acquisition device according to claim 1, characterized in that: The arc radius of the upper arc groove (9) is equal to the distance between the upper shaft rod of the hinge seat (6) and the proximal end of the torsion beam (5), and the arc radius of the lower arc groove (10) is equal to the distance between the upper shaft rod of the hinge seat (6) and the distal end of the torsion beam (5).

3. The vehicle frame assembly design data acquisition device according to claim 2, characterized in that: Both ends of the torsion beam (5) are arc-shaped, and the outer side of the torsion beam (5) is coated with a wear-resistant coating.

4. The vehicle frame assembly design data acquisition device according to claim 3, characterized in that: The frame fixing mechanism (7) comprises a transverse plate (11), a through slot (12), a sliding rod (13) and a telescopic assembly. The transverse plate (11) is fixed at the middle position of the top of the torsion beam (5). A through slot (12) is provided between the two ends of the transverse plate (11). The sliding rods (13) are slidably provided at both ends of the through slot (12). A telescopic assembly for controlling the sliding of the sliding rod (13) is provided at the middle position of the through slot (12).

5. The vehicle frame assembly design data acquisition device according to claim 4, characterized in that: The telescopic assembly comprises a bidirectional screw (14), a worm wheel (15) and a worm (16). The bidirectional screw (14) is arranged along the length direction of the transverse plate (11) and is rotatably installed inside the transverse plate (11). Both ends of the bidirectional screw (14) are respectively threadedly connected to the sliding rod (13). The worm wheel (15) is fixedly installed at the middle position of the bidirectional screw (14), and the worm (16) is meshed at the bottom of the worm wheel (15).

6. The vehicle frame assembly design data acquisition device according to claim 5, characterized in that: Both ends of the worm (16) extend to the outside of the horizontal plate (11), and both ends of the worm (16) are equipped with adjusting wheels.

7. A vehicle frame assembly design data acquisition device according to any one of claims 4 to 6, characterized in that: An end of the slide rod (13) away from the horizontal plate (11) is hingedly mounted with a squeezing block (17) symmetrically up and down, and a spring sheet (18) is arranged between two groups of squeezing blocks (17). The ends of the squeezing blocks (17) are all provided with anti-slip grooves.

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