Quarter suspension fatigue testing machine

Abstract

The invention discloses a quarter suspension fatigue testing machine, and relates to the technical field of automobile manufacturing detection, the quarter suspension fatigue testing machine comprises a main machine, the main machine is provided with a reaction frame, two ends of the main machine are connected with actuators, one end of each actuator is connected with a clamp, the clamp is arranged on the reaction frame, the main machine is also provided with a horizontal swing loading device, and the horizontal swing loading device is provided with a horizontal swing loading device. The horizontal swing loading device is connected with the clamp, after the quarter suspension is installed on the clamp, one end of the clamp is driven by the actuator to ascend and descend relative to the reaction frame, and the quarter suspension is vertically loaded; the clamp is driven by the horizontal swing loading device to swing relative to the reaction frame, and horizontal swing loading is carried out on the quarter suspension. The quarter suspension fatigue testing machine provided by the invention can perform a vertical loading test and a horizontal swing loading test, and is wide in application range, high in functionality, simple and convenient to operate and easy to disassemble, assemble, manufacture and machine.

Description

Technical Field

[0001] The invention relates to the technical field of automobile manufacturing and testing, in particular to a quarter suspension fatigue testing machine. Background Art

[0002] The suspension system is a connection device that transmits force or torque between the vehicle frame and the axle or wheel. Its fatigue performance is crucial to the safety performance of the entire vehicle. At present, general fatigue testing machines can only perform vertical loading tests on the quarter suspension of passenger cars, that is, simulating the stress conditions of the quarter suspension when the road bumps impact it. There is a lack of simulation of the stress conditions of the quarter suspension when the car turns, that is, there is a lack of horizontal swing loading tests on the quarter suspension, which is limited.

[0003] Therefore, it is necessary to develop a quarter suspension fatigue testing machine that can perform both vertical loading tests on the quarter suspension and horizontal swing loading tests on the quarter suspension. Summary of the invention

[0004] In view of the above-mentioned shortcomings, the present invention provides a quarter suspension fatigue testing machine, which can perform both vertical loading tests and horizontal swing loading tests, has a wider range of applications, is more functional, is easy to operate, and is easy to disassemble, assemble, manufacture and process.

[0005] To achieve the above object, the embodiments of the present invention adopt the following technical solutions:

[0006] A quarter suspension fatigue testing machine includes a main machine, a reaction frame is installed on the main machine, actuators are connected to both ends of the main machine, one end of the actuator is connected to a clamp, the clamp is installed on the reaction frame, and the main machine is also equipped with a horizontal swing loading device, the horizontal swing loading device is connected to the clamp, after the quarter suspension is installed on the clamp, the actuator drives one end of the clamp to rise and fall relative to the reaction frame, so as to vertically load the quarter suspension; the horizontal swing loading device drives the clamp to swing relative to the reaction frame, so as to horizontally swing load the quarter suspension.

[0007] According to one aspect of the present invention, the horizontal swing loading device includes a steering loader and a steering gear, and the steering gear includes a drive shaft and a rocker arm. The steering loader drives the drive shaft to rotate, driving the rocker arm to translate relative to the reaction frame, thereby driving the clamp to swing relative to the reaction frame, and performing horizontal swing loading on the quarter suspension.

[0008] According to one aspect of the present invention, the main machine is also equipped with a position adjustment device, which includes an adjustment motor, a sliding seat, and a clamping cylinder. The adjustment motor rotates to drive the sliding seat to translate on the main machine, driving the actuator to translate accordingly. After the movement is completed, the clamping cylinder clamps the sliding seat and the main machine.

[0009] According to one aspect of the present invention, the steering gear further comprises a support seat, the support seat is fixed in a reaction frame, both ends of the rocker arm extend out of the reaction frame, the rocker arm is horizontally arranged, and the drive shaft is vertically arranged.

[0010] According to one aspect of the present invention, the host is also equipped with a lifting device, which is connected to the steering loader. The lifting device is vertically extended and retracted to drive the steering loader to rise and fall relative to the host.

[0011] According to one aspect of the present invention, the drive shaft is a gear shaft, the rocker arm is a rack rod, one end of the drive shaft extends into the support seat and engages with the rocker arm, the other end of the drive shaft is connected to the steering loader, and the rocker arm is sleeved in the support seat.

[0012] According to one aspect of the present invention, it also includes a master control system, which is respectively connected to the actuator, the steering loader, the adjustment motor, the clamping cylinder, and the lifting device.

[0013] According to one aspect of the present invention, the host is also equipped with an environmental box, the environmental box has a cavity, the reaction frame is installed in the cavity, the cavity is filled with cold air or hot air medium, and the environmental box can simulate extreme environments.

[0014] According to one aspect of the present invention, the main machine includes a base, a column, and a crossbeam. The column is fixed at two ends of the base, and two ends of the crossbeam are respectively fixed to the column.

[0015] According to one aspect of the present invention, it also includes a maintenance mechanism, which includes a ladder and a corridor, which are connected, and the ladder is arranged on one side of the column.

[0016] The advantages of the implementation of the present invention are as follows: after the quarter suspension is installed on the fixture, the actuator drives one end of the fixture to rise and fall relative to the reaction frame to load the quarter suspension vertically; the horizontal swing loading device drives the fixture to swing relative to the reaction frame to load the quarter suspension horizontally; thus, the quarter suspension fatigue testing machine can perform both vertical loading tests and horizontal swing loading tests, with a wider range of applications and stronger functionality. The testing machine has two vertical loading test channels and one horizontal swing loading test channel, and can test two quarter suspensions at the same time; the testing machine is easy to operate and easy to disassemble, assemble, manufacture and process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0019] Figure 2 for Figure 1 Schematic diagram of the main structure;

[0020] Figure 3 for Figure 1 A side view schematic diagram of the structure;

[0021] Figure 4 for Figure 1 Schematic diagram of the top view structure.

[0022] The names corresponding to the serial numbers in the figure are as follows:

[0023] 1. Main machine; 2. Reaction frame; 3. Actuator; 4. Fixture; 5. Steering loader; 6. Steering gear; 61. Drive shaft; 62. Rocker; 63. Support seat; 7. Position adjustment device; 71. Adjustment motor; 72. Sliding seat; 73. Clamping cylinder; 8. Environmental chamber; 9. Displacement sensor; 10. Maintenance mechanism; 101. Ladder; 102. Aisle; 11. Base; 12. Column; 13. Beam; 14. Bearing seat; 15. Induction plate. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 invention.

[0025] Embodiment 1

[0026] like Figure 1 - Figure 4 As shown, a quarter suspension fatigue testing machine is used to perform fatigue tests on quarter suspensions such as automobile suspensions; the quarter suspension fatigue testing machine includes a main machine 1, a reaction frame 2, an actuator 3, a fixture 4, and a horizontal swing loading device. The main machine 1 is used to install various parts of the fuselage; the main machine 1 includes a base 11, columns 12, and a crossbeam 13, wherein there are two columns 12, which are symmetrically fixed at both ends of the base 11, and the crossbeam 13 is fixed between the two columns 12. The reaction frame 2 is installed on the base 11 of the main machine 1, and the reaction frame 2 is arranged between the two columns 12. The actuator 3 is used to vertically load the fixture 4 or the quarter suspension; there are two actuators 3, which are relatively arranged at both ends of the crossbeam 13, the top end of the actuator 3 is connected to the crossbeam 13, and the bottom end of the actuator 3 is connected to the fixture 4. The clamp 4 is used to install the quarter suspension. The clamp 4 does not limit the structural shape, which depends on the structural shape of the selected quarter suspension. There are two clamps 4, which are fixedly installed on the side of the reaction frame 2. By setting two clamps 4 or two actuators 3, the quarter suspension fatigue tester can test two quarter suspensions at the same time, which is more efficient and more flexible and convenient to use. The horizontal swing loading device includes a steering loader 5 and a steering gear 6, wherein the steering gear 6 includes a driving shaft 61, a rocker 62, a support seat 63, etc. The support seat 63 is used to install and support various components in the steering gear 6, and the support seat 63 is fixedly installed in the reaction frame 2; the driving shaft 61 is a gear shaft, which is vertically arranged, and the rocker 62 is a rack rod, which is horizontally arranged. The bottom end of the driving shaft 61 extends into the support seat 63 and meshes with the middle part of the rocker 62, and the top end of the driving shaft 61 is connected to the steering loader 5; the rocker 62 is horizontally sleeved in the support seat 63, and the two ends of the rocker 62 extend out of the reaction frame 2 and are respectively connected to the two clamps 4. When in use, after (one or two) quarter suspensions are installed on (corresponding one or two) clamps 4, the actuator 3 is used to drive one end of the clamp 4 to rise and fall relative to the reaction frame 2, so as to vertically load the quarter suspension; the clamp 4 is driven to swing relative to the reaction frame 2 by the horizontal swing loading device, that is, the driving shaft 61 is driven to rotate by the steering loader 5, thereby driving the rocker arm 62 to translate left and right relative to the reaction frame 2, thereby driving the clamp 4 to swing left and right relative to the reaction frame 2, so as to load the quarter suspension horizontally.

[0027] In this embodiment, the steering loader 5 may be a servo motor, the output end of which is connected to the driving shaft 61 via a coupling.

[0028] In this embodiment, the quarter suspension fatigue tester may further include a lifting device, which may be an electric cylinder, the top end of which is connected to the crossbeam 13 of the main machine 1, and the bottom end is connected to the steering loader 5; the lifting device is vertically extended and retracted to drive the steering loader 5 to rise and fall relative to the main machine 1. In this way, the device can adjust the height position of the steering loader 5, that is, adjust the distance between the steering loader 5 and the reaction frame 2 or the steering gear 6, which is more convenient to use and more applicable.

[0029] In this embodiment, the quarter suspension fatigue tester may also include an environmental box 8, which is fixedly mounted on the base 11 of the main machine 1; the environmental box 8 is a square box structure, with square cavities at the front and back, respectively, and the two square cavities are separated by an integrated partition. The reaction frame 2 is installed in a cavity in front of the environmental box 8; the cavity behind the environmental box 8 can be used to install air source, hydraulic source, pipelines and other components. During the test, the environmental box 8 is in a closed state, and cold air or hot air and other substances can be introduced into a cavity in front of the environmental box 8, that is, into the area with the quarter suspension; in this way, the quarter suspension fatigue tester can also simulate the stress conditions of the quarter suspension under extreme or specific environmental conditions, with a wider range of use and stronger applicability.

[0030] In this embodiment, the quarter suspension fatigue testing machine further includes an inspection mechanism 10, which includes a ladder 101 and a passage 102. Two ladders 101 are provided, each of which is arranged in parallel on the side of each column 12, and the two ladders 101 are symmetrically arranged on the base 11; when manufacturing the ladder 101, a vertical rod and a plurality of horizontal rods can be used, the bottom of the vertical rod is fixed on the base 11, the vertical rod and the column 12 are arranged parallel and spaced, and then a plurality of horizontal rods are fixed between the vertical rod and the column 12. The passage 102 is vertically fixed on the top of the ladder 101; the passage 102 can be only a square plate fixed on the top of the two ladders 101; the passage 102 can also be a plurality of plates and rods welded together to form a frame structure with a bottom that can be stepped on. Maintenance personnel can climb up the aisle 102 via the ladder 101 and walk back and forth on the aisle 102 to perform maintenance on components such as the main machine 1 and the actuator 3; in this way, the equipment can be easily maintained, more convenient to use, and have a longer service life.

[0031] In practical applications, the quarter suspension fatigue testing machine also includes a master control system, which can be divided into an electric control system, a pneumatic system, an operating system, a control display screen, etc. The master control system is connected to various components that perform actions in the equipment, such as the actuator 3, the steering loader 5, etc. The master control system is used for control and adjustment, power supply, etc. In practical applications, the actuator 3 can be a conventional product on the market, and the reaction frame 2 is a square frame structure with four openings.

[0032] The beneficial effects of this embodiment are: after the quarter suspension is installed on the fixture 4, the actuator 3 drives one end of the fixture 4 to rise and fall relative to the reaction frame 2, and the quarter suspension is vertically loaded; the horizontal swing loading device drives the fixture 4 to swing relative to the reaction frame 2, and the quarter suspension is horizontally swing loaded; in this way, the quarter suspension fatigue tester can perform both vertical loading tests and horizontal swing loading tests, with a wider range of applications and stronger functionality. The tester has two vertical loading test channels and one horizontal swing loading test channel, and can test two quarter suspensions at the same time; the tester is easy to operate and easy to disassemble, manufacture and process.

[0033] Embodiment 2

[0034] The difference between this embodiment and the first embodiment is that a position adjustment device 7 is further installed on the host 1 , and the position adjustment device 7 is connected to the actuator 3 , and the actuator 3 is driven to translate on the host 1 through the position adjustment device 7 .

[0035] In this embodiment, there are two groups of position adjustment devices 7, which are symmetrically installed at both ends of the beam 13; the position adjustment device 7 includes an adjustment motor 71, a sliding seat 72, and a clamping cylinder 73, and the adjustment motor 71 is vertically installed on the side of the beam 13; the sliding seat 72 is a mouth-shaped structure, or an inverted U-shaped or door-shaped structure, and the sliding seat 72 is sleeved on the beam 13; the adjustment motor 71 and the sliding seat 72 are connected by a screw rod, and the end of the screw rod is arranged on the bearing seat 14, and the bearing seat 14 is fixed above the beam 13; the clamping cylinder 73 is arranged on the sliding seat 72. By adjusting the rotation of the motor 71, the sliding seat 72 is driven to translate axially along the beam 13 on the main machine 1, driving the actuator 3 to translate accordingly. After the movement is completed, the sliding seat 72 and the beam 13 are clamped and fixed by the clamping cylinder 73; in this way, the device can adjust the horizontal position of the actuator 3, can adapt to quarter suspensions of different lengths, and has a wider range of use and greater applicability.

[0036] In this embodiment, when the equipment is provided with an environmental box 8, a corresponding strip hole is opened on the top of the environmental box 8 for the bottom end of the actuator 3 to pass through and facilitate the left and right translation of the actuator 3; at this time, a sealing gasket or a sealing cover can be added to the equipment, and after the translation adjustment of the actuator 3 is completed, the strip hole is blocked with a sealing gasket or a sealing cover to seal the entire environmental box 8.

[0037] In this embodiment, the quarter suspension fatigue tester also includes a displacement sensor 9, which has two displacement sensors 9 symmetrically fixed on the upper surfaces of the two ends of the cross beam 13; the displacement sensor 9 is arranged on the side of the adjustment motor 71 and the side of the sliding seat 72, and a sensing sheet 15 can be fixed on the side of the sliding seat 72, and the displacement sensor 9 and the sensing sheet 15 are arranged opposite to each other; the displacement sensor 9 is electrically connected to the control display screen of the master control system, and the position of the sliding seat 72 or the actuator 3 is measured by the displacement sensor 9 and displayed on the control display screen; in this way, the device is more intuitive when adjusting the position of the actuator 3, and the operation is more convenient. When performing the adjustment operation, select the actuator 3 (left or right) to be adjusted, release the clamping cylinder 73, input the adjustment position on the control display screen, start the adjustment motor 71, so that the sliding seat 72 reaches the adjustment position, lock the clamping cylinder 73, and load the actuator 3. Position adjustment is completed.

[0038] The beneficial effect of this embodiment is that by providing the position adjustment device 7, the quarter suspension fatigue testing machine can adjust the horizontal position of the actuator 3, can adapt to quarter suspensions of different lengths, has a wider range of use, and is more applicable.

[0039] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the art within the technical scope disclosed in the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A quarter suspension fatigue testing machine, comprising a main machine (1), a reaction frame (2) mounted on the main machine (1), an actuator (3) connected at both ends of the main machine (1), a fixture (4) connected at one end of the actuator (3), the fixture (4) mounted on the reaction frame (2), characterized in that: The main machine (1) is also provided with a horizontal swing loading device, which is connected to the clamp (4). After the quarter suspension is mounted on the clamp (4), the actuator (3) drives one end of the clamp (4) to rise and fall relative to the reaction frame (2) to vertically load the quarter suspension; the horizontal swing loading device drives the clamp (4) to swing relative to the reaction frame (2) to horizontally swing load the quarter suspension.

2. The quarter suspension fatigue testing machine according to claim 1, characterized in that: The horizontal swing loading device comprises a steering loader (5) and a steering gear (6); the steering gear (6) comprises a driving shaft (61) and a rocker arm (62); the steering loader (5) drives the driving shaft (61) to rotate, thereby driving the rocker arm (62) to translate relative to the reaction frame (2), thereby driving the clamp (4) to swing relative to the reaction frame (2), and performing horizontal swing loading on the quarter suspension.

3. The quarter suspension fatigue testing machine according to claim 2, characterized in that: The main machine (1) is also provided with a position adjustment device (7), which comprises an adjustment motor (71), a sliding seat (72), and a clamping cylinder (73). The adjustment motor (71) rotates to drive the sliding seat (72) to translate on the main machine (1), thereby driving the actuator (3) to translate accordingly. After the movement is completed, the clamping cylinder (73) clamps and fixes the sliding seat (72) and the main machine (1).

4. The quarter suspension fatigue testing machine according to claim 2, characterized in that: The steering gear (6) further comprises a support seat (63), wherein the support seat (63) is fixed in the reaction frame (2), both ends of the swing rod (62) extend out of the reaction frame (2), the swing rod (62) is arranged horizontally, and the drive shaft (61) is arranged vertically.

5. The quarter suspension fatigue testing machine according to claim 2, characterized in that: The main machine (1) is also provided with a lifting device, which is connected to the steering loader (5). The lifting device is vertically extended and retracted to drive the steering loader (5) to rise and fall relative to the main machine (1).

6. The quarter suspension fatigue testing machine according to claim 4, characterized in that: The drive shaft (61) is a gear shaft, the swing rod (62) is a rack rod, one end of the drive shaft (61) extends into the support seat (63) and meshes with the swing rod (62), the other end of the drive shaft (61) is connected to the steering loader (5), and the swing rod (62) is sleeved in the support seat (63).

7. The quarter suspension fatigue testing machine according to any one of claims 1 to 6, characterized in that: It also includes a master control system, which is respectively connected to the actuator (3), the steering loader (5), the adjustment motor (71), the clamping cylinder (73), and the lifting device.

8. The quarter suspension fatigue testing machine according to claim 7, characterized in that: The host (1) is also provided with an environmental box (8), wherein a cavity is provided in the environmental box (8), wherein the reaction frame (2) is installed in the cavity, and wherein the cavity is filled with cold air or hot air medium, and the environmental box (8) can simulate an extreme environment.

9. The quarter suspension fatigue testing machine according to claim 7, characterized in that: The main machine (1) comprises a base (11), a column (12), and a crossbeam (13); the column (12) is fixed at two ends of the base (11), and the two ends of the crossbeam (13) are respectively fixed to the column (12).

10. The quarter suspension fatigue testing machine according to claim 9, characterized in that: It also includes a maintenance mechanism (10), the maintenance mechanism (10) includes a ladder (101) and a passage (102), the two are connected, and the ladder (101) is arranged on one side of the column (12).

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