A universal vehicle frame fatigue test device

Abstract

The utility model discloses a general type frame fatigue test equipment, including base, at least one group of first fixed unit for fixing the rear end of car frame and the second fixed unit of car frame front end are provided on the base, the matching setting first loading unit is provided on the second fixed unit, and the first loading unit is used for horizontal loading on the car frame, and the portal frame is provided on the base, and at least one group of second loading unit is provided on the portal frame, and the second loading unit is used for vertical loading on the car frame. Through the modularization of first fixed unit, second fixed unit and optional second loading unit number configuration, a single equipment can be compatible with the fatigue test of various frames such as two wheels, three wheels and four wheels, realize "one machine multi -use", greatly reduce the equipment purchase cost and site occupation area of enterprise. Through the integration for horizontal loading's first loading unit and for vertical loading's second loading unit. Realize the horizontal, vertical and torsion etc. multiple fatigue test on a device.

Description

Technical Field

[0001] This utility model relates to the field of fatigue testing technology, and in particular to a general-purpose vehicle frame fatigue testing device. Background Technology

[0002] As the core load-bearing structure of various vehicles such as bicycles, motorcycles, tricycles, and four-wheeled vehicles, the fatigue life of the frame directly affects the safety and reliability of the entire vehicle. Therefore, it is crucial to conduct fatigue tests on the frame under simulated actual working conditions during the research and development and production stages.

[0003] Currently, most mainstream frame fatigue testing equipment on the market is specialized equipment, designed and manufactured for specific models of two-wheeled, three-wheeled, or four-wheeled frames. This results in poor versatility: a single piece of equipment can typically only test one type or series of frames. When product lines are updated or different types of frames need to be tested, specialized equipment must be purchased again, leading to high equipment costs and large space requirements.

[0004] Limited functionality: Most specialized equipment can only perform load tests in a single direction, such as only horizontal or only vertical. It cannot comprehensively simulate the multi-directional complex loads that the chassis will bear in actual use on the same equipment, and the test conditions deviate from the real situation. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a universal vehicle frame fatigue testing device.

[0006] To solve the above-mentioned technical problems, the present invention is solved by the following technical solution: a general-purpose vehicle frame fatigue testing device includes a base, and the base is provided with at least one set of a first fixing unit for fixing the rear end of the vehicle frame and a second fixing unit for fixing the front end of the vehicle frame; A first loading unit is matched and arranged on the second fixing unit. The first loading unit is used to load horizontally onto the frame. A gantry frame is arranged on the base. At least one set of second loading units is arranged on the gantry frame. The second loading unit is used to load vertically onto the frame.

[0007] In the above scheme, preferably, the base is provided with several parallel slides, and both the first fixing unit and the second fixing unit can slide in any of the slides.

[0008] In the above scheme, preferably, the first fixing unit includes two sets of first sliding bases separated on both sides of the vehicle frame, and a connecting block for mounting to the vehicle frame is provided on the first sliding base.

[0009] In the above scheme, preferably, the second fixing unit includes a second sliding base, a support rod and a plurality of positioning components thereon, the support rod being rotatably connected inside the second sliding base, and the positioning components being disposed on the support rod for connection with the vehicle frame.

[0010] In the above scheme, preferably, the support rod is connected to the first slider, and the first slider is connected to the guide rail inside the second sliding base through a linear bearing.

[0011] In the above scheme, preferably, the first loading unit includes a first hydraulic cylinder, the cylinder body of the first hydraulic cylinder is disposed outside the second sliding base, and the output shaft passes through the second sliding base and is disposed opposite to the first slider.

[0012] In the above scheme, preferably, the second loading unit includes a mounting box that can slide on the crossbeam, a second hydraulic cylinder is provided on the mounting box, the output shaft of the second hydraulic cylinder is disposed opposite to a second slider connected by a linear bearing, and a control component is provided on the second slider.

[0013] In the above scheme, preferably, the control component is connected to the loading component, and the loading component is a loading roller, a loading link, or a loading hammer.

[0014] In the above scheme, preferably, when the number of the second fixed units is one set, the equipment is used for horizontal load testing of two-wheeled and three-wheeled vehicle frames; when the number of the second fixed units is two sets, the equipment is used for horizontal load testing of four-wheeled vehicle frames.

[0015] In the above scheme, preferably, when the second loading unit is in a non-working state, the device is used for horizontal loading test of the vehicle frame; When the second loading unit is used in a set, the equipment is used for vertical loading tests of the wheel axle and seat of a two-wheeled vehicle; and for loading tests of the center of gravity of a four-wheeled vehicle frame. When two sets of the second loading unit are used, the equipment is used for vertical loading tests on the rear axle and center of gravity of a three-wheeled vehicle frame; and for torsional loading tests on the rear axle of a four-wheeled vehicle frame.

[0016] The beneficial effects of this invention are as follows: By configuring the modular first fixing unit, second fixing unit, and optional second loading unit, a single device can be compatible with fatigue testing of various vehicle frames, including two-wheeled, three-wheeled, and four-wheeled vehicles, achieving "multi-purpose use in one machine" and greatly reducing the equipment purchase cost and site area required by enterprises. By integrating the first loading unit for horizontal loading and the second loading unit for vertical loading, multiple fatigue tests, including horizontal, vertical, and torsional tests, can be completed on a single device, comprehensively simulating the complex loads that the vehicle frame experiences during actual driving, resulting in more realistic and comprehensive test data. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the horizontal loading scheme for the tricycle frame of this utility model.

[0018] Figure 2 This is a schematic diagram of the loading scheme for the center of gravity of the tricycle frame of this utility model.

[0019] Figure 3 This is a schematic diagram of the loading scheme for the rear axle position of the tricycle frame of this utility model.

[0020] Figure 4 This is a schematic diagram of the horizontal loading scheme for the two-wheeled vehicle frame of this utility model.

[0021] Figure 5 This is a schematic diagram of the vertical seat cushion loading scheme for the two-wheeled vehicle frame of this utility model.

[0022] Figure 6 This is a schematic diagram of the vertical wheel axle loading scheme for the two-wheeled vehicle frame of this utility model.

[0023] Figure 7 This is a schematic diagram of the horizontal loading scheme for the four-wheeled vehicle frame of this utility model.

[0024] Figure 8 This is a schematic diagram of the center-of-gravity loading scheme for the four-wheeled vehicle frame of this utility model.

[0025] Figure 9 This is a schematic diagram of the torsional loading scheme for the rear axle of the four-wheeled vehicle frame of this utility model.

[0026] Figure 10 This is a schematic diagram of one form of the second fixing unit of this utility model.

[0027] Figure 11 This is a schematic diagram of the second fixing unit of this utility model.

[0028] Figure 12 This is a schematic diagram of the second loading unit on the gantry frame of this utility model.

[0029] Figure 13 This is a schematic diagram of another form of the second fixing unit of this utility model.

[0030] Figure 14 This is a schematic diagram of the second fixing unit of this utility model.

[0031] Figure 15 This is a schematic diagram of the second fixing unit of this utility model. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: See below Figures 1-15A general-purpose fatigue testing device for vehicle frames 2 is provided to simulate the horizontal and vertical loads borne by the vehicle frame 2 in actual use and to conduct fatigue life tests. Furthermore, the device, through adjustable fixing and loading units, can adapt to the testing requirements of two-wheeled, three-wheeled, and four-wheeled vehicle frames 2.

[0033] Specifically, the general-purpose frame 2 fatigue testing equipment includes a base 1, which is a rigid welded structure made of steel profiles and steel plates. Several parallel slides 11 are provided on the upper surface of the base 1, and these slides 11 are arranged along the length of the base 1.

[0034] At least one set of first fixing unit 3 for fixing the rear end of the frame 2 and second fixing unit 4 for fixing the front end of the frame 2 are provided on the base 1. The first fixing unit 3 includes two sets of first sliding bases 31 respectively disposed on both sides of the frame 2. The first sliding bases 31 are slidably disposed in the slide rails 11 of the base 1, and the first sliding bases 31 can be locked onto the base 1.

[0035] The first sliding base 31 is provided with a connecting block 32 that is directly installed on the frame 2. The connecting block 32 includes a threaded positioning plate for screw connection to achieve fixed connection of the frame 2, and a sleeve plate for sleeve connection of the rear wheel axle. The sleeve plate does not restrict the rotation of the rear wheel axle, so that the frame 2 can be adapted to connect different parts by changing the connecting block 32.

[0036] Furthermore, the second fixing unit 4 includes a second sliding base 41, a support rod 42, and several positioning elements 43 disposed on the support rod 42. The second sliding base 41 can also be slidably disposed in the slide rail 11 and can be locked onto the base 1. The support rod 42 is rotatably connected inside the second sliding base 41 and can rotate around an axis to adapt to the installation angle of the head tube of different frames 2.

[0037] The support rod 42 is connected to the first slider 44, and the first slider 44 is connected to the guide rail inside the second sliding base 41 via a linear bearing, allowing the support rod 42 to move horizontally. Meanwhile, the positioning element 43 is an adjustable clamping block or connecting block 32, used to connect to different parts of the front end of the frame 2.

[0038] In this embodiment, two sets of the second fixing unit 4 are provided on the base 1, and the number is selected according to the different types of vehicle frames 2. At the same time, the length of the support rod 42 can be selected according to the size of the vehicle frame 2.

[0039] Furthermore, a first loading unit 5 is matched and disposed on the second fixing unit 4 for applying a horizontal load to the frame 2. The first loading unit 5 includes a first hydraulic cylinder 51, the cylinder body of which is fixed to the outside of the second sliding base 41, and its output shaft passes through the second sliding base 41 and is disposed opposite to the first slider 44, which can push the first slider 44 and the support rod 42, thereby applying a horizontal fatigue load to the frame 2.

[0040] A gantry frame 8 is also provided on the base 1. The gantry frame 8 spans across the base 1 and its relative position to the vehicle frame 2 can be changed as needed to achieve vertical loading on different vehicle frames 2. At least one set of second loading units 6 is provided on the crossbeam of the gantry frame 8. Furthermore, in this embodiment, two sets of second loading units 6 are provided, and the number used can be selected according to different loading tests required by actual needs.

[0041] Furthermore, the second loading unit 6 includes a mounting box 62 that can slide on the crossbeam of the gantry 8. The mounting box 62 moves along the crossbeam. A second hydraulic cylinder 61 is provided on the mounting box 62. The output shaft of the second hydraulic cylinder 61 is connected to a second slider 63 via a linear bearing. The second slider 63 can move in a direction perpendicular to the base 1.

[0042] To achieve the load, a control element 64 is provided on the second slider 63, and a loading element 65 is connected to the lower end of the control element 64. The control element 64 includes a rod and a sleeve for its internal use, which are telescopically connected and have a threaded locking ring for fixing the control element 64 after adjustment. Furthermore, the loading element 65 can be replaced with different forms such as a loading roller, a loading connecting rod, or a loading hammer according to the test requirements.

[0043] In practical applications, this device can be flexibly configured according to the type of test chassis 2, specifically: When testing the horizontal loading of the two-wheeled vehicle frame 2, the rear end of the frame 2 is first connected to the base 1 using the first fixing unit 3. Specifically, the first sliding base 31 is sleeved with the rear wheel axle of the frame 2. At the same time, a set of second fixing units 4 is used to connect the front end of the frame 2 to the base 1. Specifically, the support rod 42 is rotated to be parallel to the head tube, and the positioning member 43 is locked at both ends of the head tube to achieve fixation. Simultaneously, the first loading unit 5 applies a loading force to the first slider 44 to achieve the horizontal loading test. Meanwhile, the second loading unit 6 is in a non-operating state.

[0044] When testing the vertical seat load of the two-wheeled bicycle frame 2, the rear end of the frame 2 is first connected to the base 1 using the first fixing unit 3. Specifically, the connecting block 32 of the first sliding base 31 is sleeved on the flat fork axle at the center of the frame 2. At the same time, a set of second fixing units 4 is used to connect the front end of the frame 2 to the base 1. Specifically, after the support rod 42 is rotated to be parallel to the head tube, the positioning member 43 is locked at both ends of the head tube to achieve fixation. A set of second loading units 6 applies a loading force to the second slider 63. The loading roller is connected to the connecting rod to realize the vertical seat load test. Meanwhile, the first loading unit 5 is in a non-working state.

[0045] When testing the vertical axle loading of the two-wheeled frame 2, the rear end of the frame 2 is first connected to the base 1 using the first fixing unit 3. Specifically, the connecting block 32 of the first sliding base 31 is sleeved on the flat fork axle at the center of the frame 2. At the same time, a set of second fixing units 4 is used to connect the front end of the frame 2 to the base 1. Specifically, after rotating the support rod 42 to be parallel to the head tube, the positioning part 43 is locked at both ends of the head tube to achieve fixation. A set of second loading units 6 applies a loading force to the second slider 63. The connecting rod is connected to a loading roller, and the loading roller is connected to both sides of the loading rod. The two sets of loading connecting rods are sleeved on the rear axle, and the second hydraulic cylinder 61 reciprocates to achieve the vertical seat cushion loading test. Meanwhile, the first loading unit 5 is in a non-working state.

[0046] When testing the horizontal loading of the tricycle frame 2, the rear end of the frame 2 is first connected to the base 1 using the first fixing unit 3. Specifically, the connecting block 32 of the first sliding base 31 is sleeved with the rear wheel axle of the frame 2. At the same time, a set of second fixing units 4 is used to connect the front end of the frame 2 to the base 1. Specifically, the support rod 42 is rotated to be parallel to the head tube, and the positioning part 43 is locked at both ends of the head tube to achieve fixation. Simultaneously, the first loading unit 5 applies a loading force to the first slider 44 to achieve the horizontal loading test. Meanwhile, the second loading unit 6 is in a non-working state.

[0047] When testing the center-of-gravity loading of the tricycle frame 2, the rear end of the frame 2 is first connected to the base 1 using the first fixing unit 3. Specifically, the connecting block 32 of the first sliding base 31 is sleeved on the rear wheel axle of the frame 2. At the same time, a set of second fixing units 4 is used to connect the front end of the frame 2 to the base 1. Specifically, the support rod 42 is rotated to be parallel to the head tube, and the positioning part 43 is locked at both ends of the head tube to achieve fixation. With the cooperation of two sets of second loading units 6, a loading force is applied to the second slider 63. The loading hammer is connected to two sets of control parts 64 to act on the frame 2 to perform the center-of-gravity loading test of the frame 2. Meanwhile, the first loading unit 5 is in a non-working state.

[0048] When testing the rear axle load of the tricycle frame 2, the rear end of the frame 2 is first connected to the base 1 using the first fixing unit 3. Specifically, the connecting block 32 of the first sliding base 31 is sleeved on the flat fork axle of the frame 2. At the same time, a set of second fixing units 4 is used to connect the front end of the frame 2 to the base 1. Specifically, the support rod 42 is rotated to be parallel to the head tube, and the positioning member 43 is locked at both ends of the head tube to achieve fixation. With the cooperation of two sets of second loading units 6, a loading force is applied to the second slider 63. The two sets of control members 64 are connected to the rear axle assembly through loading linkages to achieve reciprocating loading force on the rear axle, thus conducting the rear axle load test of the frame 2. Meanwhile, the first loading unit 5 is in a non-working state.

[0049] When testing the horizontal loading of the four-wheeled vehicle frame 2, the rear end of the frame 2 is first connected to the base 1 using the first fixing unit 3. Specifically, the connecting block 32 of the first sliding base 31 is sleeved with the rear wheel axle of the frame 2. At the same time, the front end of the frame 2 is connected to the base 1 using two sets of second fixing units 4. Specifically, when the support rod 42 is rotated to be parallel to the output shaft, the locking piece 7 is used to lock the support rod 42 in the second sliding base 41. The locking piece on the support rod 42 is locked to the frame 2 with bolts. Simultaneously, the first loading unit 5 applies a loading force to the first slider 44 to achieve the horizontal loading test. Meanwhile, the second loading unit 6 is in a non-working state.

[0050] When testing the center of gravity loading of the four-wheeled vehicle frame 2, the rear end of the frame 2 is first connected to the base 1 using the first fixing unit 3. Specifically, the connecting block 32 of the first sliding base 31 is sleeved with the rear wheel axle of the frame 2. At the same time, the front end of the frame 2 is connected to the base 1 using two sets of second fixing units 4. Specifically, when the support rod 42 is rotated to be parallel to the output shaft, the support rod 42 is locked in the second sliding base 41 using the locking piece 7. The locking piece on the support rod 42 is locked to the frame 2 with bolts. At the same time, a set of second loading units 6 applies a loading force to the second slider 63. The control rod is connected to the loading roller to realize the vertical loading test of the frame 2. Meanwhile, the first loading unit 5 is in a non-working state.

[0051] When testing the torsional loading of the rear axle of the four-wheeled vehicle frame 2, two sets of second fixing units 4 are used to connect the front end of the frame 2 to the base 1. Specifically, when the support rod 42 is rotated to be parallel to the output shaft, the support rod 42 is locked in the second sliding base 41 with the locking piece 7. The locking piece on the support rod 42 is locked to the frame 2 with bolts. At the same time, it is used in conjunction with two sets of second loading units 6. Each control component 64 is provided with a loading link, and each loading link is sleeved on the rear axle at both ends of the frame 2. When the second loading unit 6 is activated, it applies an opposite force to achieve torsional spring loading on the rear axle. Meanwhile, the first loading unit 5 is in a non-working state.

[0052] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A general-purpose vehicle frame (2) fatigue testing device, characterized in that: Includes a base (1), on which at least one set of a first fixing unit (3) for fixing the rear end of the frame (2) and a second fixing unit (4) for fixing the front end of the frame (2) are provided; A first loading unit (5) is matched and arranged on the second fixing unit (4). The first loading unit (5) is used to load horizontally on the frame (2). A gantry (8) is arranged on the base (1). At least one set of second loading units (6) is arranged on the gantry (8). The second loading unit (6) is used to load vertically on the frame (2).

2. The universal frame (2) fatigue testing equipment according to claim 1, characterized in that: The base (1) is provided with several parallel slides (11), and the first fixing unit (3) and the second fixing unit (4) can slide in any slide (11).

3. A general-purpose vehicle frame (2) fatigue testing device according to claim 1 or 2, characterized in that: The first fixing unit (3) includes two sets of first sliding bases (31) on both sides of the frame (2), and a connecting block (32) for mounting to the frame (2) is provided on the first sliding base (31).

4. A general-purpose vehicle frame (2) fatigue testing device according to claim 1 or 2, characterized in that: The second fixing unit (4) includes a second sliding base (41), a support rod (42) and a plurality of positioning elements (43) thereon. The support rod (42) is rotatably connected inside the second sliding base (41), and the positioning elements (43) are disposed on the support rod (42) for connection with the frame (2).

5. The universal frame (2) fatigue testing equipment according to claim 4, characterized in that: The support rod (42) is connected to the first slider (44), and the first slider (44) is connected to the guide rail inside the second sliding base (41) through a linear bearing.

6. The universal frame (2) fatigue testing equipment according to claim 5, characterized in that: The first loading unit (5) includes a first hydraulic cylinder (51), the cylinder body of the first hydraulic cylinder (51) is disposed outside the second sliding base (41), and the output shaft passes through the second sliding base (41) and is disposed opposite to the first slider (44).

7. The universal frame (2) fatigue testing equipment according to claim 1, characterized in that: The second loading unit (6) includes a mounting box (62) that is slidable on a crossbeam. A second hydraulic cylinder (61) is provided on the mounting box (62). The output shaft of the second hydraulic cylinder (61) is disposed opposite to a second slider (63) connected by a linear bearing. A control element (64) is provided on the second slider (63).

8. The universal frame (2) fatigue testing equipment according to claim 7, characterized in that: The control component (64) is connected to the loading component (65), which is a loading roller, a loading link, or a loading hammer.

9. A general-purpose vehicle frame (2) fatigue testing device according to claim 1, characterized in that: When the number of the second fixing unit (4) is one set, the equipment is used for horizontal loading tests of two-wheeled vehicle frames (2) and three-wheeled vehicle frames (2); when the number of the second fixing unit (4) is two sets, the equipment is used for horizontal loading tests of four-wheeled vehicle frames (2).

10. A general-purpose vehicle frame (2) fatigue testing device according to claim 9, characterized in that: When the second loading unit (6) is in a non-working state, the device is used for horizontal loading tests of the frame (2); When the second loading unit (6) is used in a set, the equipment is used for vertical loading tests of the axle and seat of the two-wheeled vehicle frame (2); and for center of gravity loading tests of the four-wheeled vehicle frame (2); When the second loading unit (6) is used in two sets, the equipment is used for vertical loading tests on the rear axle and center of gravity of the tricycle frame (2); And for the torsional loading test of the rear axle of the four-wheel frame (2).

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