Four-channel hydraulic testing machine

Abstract

The utility model relates to a four-channel hydraulic testing machine, which belongs to the technical field of fatigue test devices and comprises a base, a door-type frame is mounted on the base, and a vertical actuator is hung on the door-type frame. A transverse actuator mounting seat and a longitudinal actuator mounting seat are fixed on the base, a transverse actuator is mounted on the transverse actuator mounting seat, and a longitudinal actuator is mounted on the longitudinal actuator mounting seat; an auxiliary workbench is installed on the base, and a plurality of sliding seats are arranged on the auxiliary workbench in a sliding mode. The four-channel hydraulic testing machine further comprises a testing pressure seat, and the testing pressure seat is movably connected with the vertical actuator, the transverse actuator and the longitudinal actuator. A clamping seat is connected below the test pressure seat; according to the utility model, dynamic loading in three directions can be carried out on the to-be-detected piece through the vertical actuator, the transverse actuator and the longitudinal actuator, the real stress condition of a plate spring and a guide arm in the automobile driving process is simulated, the structure is innovative and prominent, and servo control and module measurement are accurate.

Description

TECHNICAL FIELD

[0001] The utility model relates to a four -channel hydraulic pressure testing machine belongs to fatigue test device technical field. BACKGROUND

[0002] Plate spring and guide arm are important components in mechanical structures such as automobile suspension system, and after being produced, plate spring and guide arm need to be subjected to fatigue test to ensure its reliability and durability. However, the existing fatigue test device can only make vertical direction fatigue test on plate spring and guide arm, and other two direction tests cannot be completed, so the real stress condition of plate spring and guide arm in the process of automobile driving cannot be simulated. SUMMARY

[0003] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a four-channel hydraulic pressure testing machine, which can simulate the stress condition of plate spring and guide arm of a heavy-duty truck in three directions, so that the fatigue test is closer to the real state, and through the combination of the mechanical measurement unit, special test detection is carried out on plate spring and guide arm.

[0004] The four-channel hydraulic pressure testing machine comprises a base, a portal frame is installed on the base, a vertical actuator is hoisted on the portal frame, the vertical actuator is connected with the portal frame through a screw rod and a clamping plate, and the position of the vertical actuator is adjustable; a horizontal actuator mounting seat and a longitudinal actuator mounting seat are further fixed on the base, a horizontal actuator is installed on the horizontal actuator mounting seat, a longitudinal actuator is installed on the longitudinal actuator mounting seat, and the positions of the horizontal actuator and the longitudinal actuator are both adjustable; an auxiliary workbench is installed on the base, a recess is arranged on the auxiliary workbench, a plurality of sliding seats are slidably arranged in the recess, the sliding seats can support and fix the end part of the plate spring or guide arm to be detected, so that the test can be carried out conveniently; the four-channel hydraulic pressure testing machine further comprises a test pressing seat, the top surface of the test pressing seat is movably connected with the vertical actuator, and the two side surfaces of the test pressing seat are movably connected with the horizontal actuator and the longitudinal actuator respectively; a clamping seat is connected below the test pressing seat, and the clamping seat can clamp the plate spring or guide arm to be detected.

[0005] The technical scheme of the utility model provides a four-channel hydraulic pressure testing machine, places the two ends of the plate spring or guide arm to be detected on the sliding seat, clamps by the clamping seat, and then connects the test pressing seat with the vertical actuator, the horizontal actuator and the longitudinal actuator to exert force on the test piece in three directions, so that the real stress condition of the plate spring and guide arm in the process of automobile driving can be simulated.

[0006] Preferably, the portal frame comprises a stand column and a cross beam, the cross beam is hoisted on the stand column through a screw rod and a clamping plate, and the mounting position of the cross beam on the stand column is adjustable.

[0007] Preferably, the vertical actuator comprises vertical actuator A and vertical actuator B, the thrust and stroke of vertical actuator A are greater than those of vertical actuator B, so as to facilitate fatigue test of different specifications of products under different pressures.

[0008] Preferably, the vertical actuator, the horizontal actuator and the longitudinal actuator are all provided with journal bearings at the two ends, so as to adapt to the change of stress direction during the test.

[0009] Further, the protective cover is movably arranged on the base to prevent the detection piece from breaking during the test.

[0010] Preferably, the vertical actuator, the horizontal actuator and the longitudinal actuator are provided with an oil source, the oil source is provided with four independent motor oil pumps, the oil source realizes control of the vertical actuator A, the vertical actuator B, the horizontal actuator and the longitudinal actuator through four-channel oil distributors, and realizes dynamic loading in three directions; the loading, the load maintaining and the unloading are all completed by the control system; each oil supply pipeline is provided with a high-precision servo valve; the vertical actuator, the horizontal actuator and the longitudinal actuator are also provided with pressure sensors, and the pressure sensors are electrically connected with the control system.

[0011] The utility model has the beneficial effects compared with prior art:

[0012] The four-channel hydraulic test machine can implement dynamic loading in three directions on the detection piece through the vertical actuator, the horizontal actuator and the longitudinal actuator, simulate the real stress condition of the plate spring and the guide arm during automobile driving, make the fatigue test closer to the real condition, and specially test the plate spring and the guide arm; the utility model is a load adaptive type fast loading and unloading system, can realize precise control of various modes such as separate control and cooperative control of the vertical direction, the longitudinal direction and the horizontal direction, has prominent structural innovation, and servo control and module measurement are accurate. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is one of the structure schematic views of the utility model;

[0014] Fig. 2 It is the second structure schematic view of the utility model.

[0015] In the drawing: 1, stand; 2, vertical actuator A; 3, crossbeam; 4, horizontal actuator mounting seat; 5, horizontal actuator; 6, test pressure seat; 7, clamping seat; 8, auxiliary workbench; 9, detection piece; 10, sliding seat; 11, protective cover; 12, base; 13, vertical actuator B; 14, longitudinal actuator mounting seat; 15, longitudinal actuator. PREFERRED EMBODIMENT

[0016] The present invention will be further described below with reference to specific embodiments.

[0017] However, the description of this utility model is only a structural or even functional description of the embodiments, and the scope of the utility model is not limited by the embodiments described herein.

[0018] For example, multiple embodiments may have various modifications and forms, and it should be understood that the scope of this utility model includes equivalents that can realize the technical concept.

[0019] like Figs. 1-2 As shown, this embodiment is achieved through the following technical solution: It includes a base 12, which has a T-slot. A portal frame is mounted on the base 12, and the base 12 is connected to the portal frame via the T-slot and bolts / nuts for easy adjustment. A vertical actuator is suspended on the portal frame, and the vertical actuator is connected to the portal frame via screws and clamps; the position of the vertical actuator is adjustable. A transverse actuator mounting base 4 and a longitudinal actuator mounting base 14 are also fixed on the base 12. Both the transverse actuator mounting base 4 and the longitudinal actuator mounting base 14 have T-slots. The transverse actuator mounting base 4 is mounted with a transverse actuator 5 via the T-slot and bolts / nuts, and the longitudinal actuator mounting base 14 is mounted with a T-slot. The groove and bolts and nuts are equipped with longitudinal actuators 15, and the positions of the transverse actuators 5 and longitudinal actuators 15 are adjustable; an auxiliary worktable 8 is installed on the base 12, and the auxiliary worktable 8 has a groove. Two sets of slides 10 are slidably arranged in the groove. The slides 10 can support and fix the end of the leaf spring or guide arm to be tested, so as to facilitate the test; the four-channel hydraulic testing machine also includes a test pressure seat 6. The top surface of the test pressure seat 6 is movably connected to the vertical actuator, and the two sides of the test pressure seat 6 are movably connected to the transverse actuator 5 and the longitudinal actuator 15, respectively; a clamping seat 7 is connected below the test pressure seat 6, which can clamp the leaf spring or guide arm to be tested.

[0020] In the embodiment, the door type frame comprises a stand column 1 and a cross beam 3, the cross beam 3 is hoisted on the stand column 1 through a screw rod and a clamping plate, and the mounting position of the cross beam 3 on the stand column 1 is adjustable. The vertical actuator comprises a vertical actuator A2 and a vertical actuator B13, the thrust and stroke of the vertical actuator A2 are greater than those of the vertical actuator B13, so that fatigue tests of different specifications of products under different pressures can be carried out. The head and tail ends of the vertical actuator, the transverse actuator 5 and the longitudinal actuator 15 are all provided with relevant joint bearings to adapt to the change of force direction during the test process. The protective cover 11 is movably arranged on the base 12 to prevent the breakage of the detection piece during the test process. The vertical actuator, the transverse actuator 5 and the longitudinal actuator 15 are provided with an oil source, the oil source is provided with four groups of independent servo motor oil pumps, the four groups of servo motor oil pumps are controlled by a control system according to the working requirement, one group, two groups, three groups or all groups can be started, and the energy consumption can be saved according to the working requirement. The oil source has a low position shutdown function, when the oil level drops due to failure during the operation of the device, the device stops when the oil level drops to a certain degree, thereby avoiding energy waste. The oil source realizes the control of the vertical actuator A2, the vertical actuator B13, the transverse actuator 5 and the longitudinal actuator 15 through four-channel oil distributors, and realizes dynamic loading in three directions; the loading, load maintaining and unloading processes are all completed by the control system; each oil supply pipeline is provided with a high-precision servo valve; the vertical actuator, the transverse actuator 5 and the longitudinal actuator 15 are also provided with pressure sensors, and the pressure sensors are electrically connected with the control system.

[0021] The use method of the utility model is:

[0022] 1, the two ends of the detection piece 9 are placed on the sliding seat 10, the middle position of the detection piece 9 is clamped by the clamping seat 7, and then the test pressing seat 6 is connected with the vertical actuator, the transverse actuator 5 and the longitudinal actuator 15;

[0023] 2, the control system controls the vertical actuator, the transverse actuator 5 and the longitudinal actuator 15 to act, so as to exert forces in three directions on the detection piece 9, simulate the real force condition of the plate spring and the guide arm during the driving process of the automobile, and simultaneously monitor the force condition of the detection piece 9 in real time through the pressure sensor.

[0024] Of course, the above content is only a preferred embodiment of the utility model, and cannot be considered as limiting the scope of the embodiment of the utility model. The utility model is also not limited to the above examples, and equal changes and improvements made by ordinary skilled persons in the technical field within the essential scope of the utility model should be attributed to the patent coverage range of the utility model.

Claims

1. A four-channel hydraulic testing machine characterized by, The door frame is hung on the base (12) and connected with the vertical actuator through screw rod and clamp plate; the base (12) is fixed with the transverse actuator mounting seat (4) and the longitudinal actuator mounting seat (14), the transverse actuator (5) is mounted on the transverse actuator mounting seat (4), and the longitudinal actuator (15) is mounted on the longitudinal actuator mounting seat (14); the auxiliary workbench (8) is mounted on the base (12), the auxiliary workbench (8) is provided with a groove, and a plurality of sliding seats (10) are slidably arranged in the groove; The test pressing seat (6) is movably connected with the vertical actuator on the top surface, and movably connected with the transverse actuator (5) and the longitudinal actuator (15) on the two side surfaces; the clamping seat (7) is connected below the test pressing seat (6).

2. The four-channel hydrostatic tester of claim 1, wherein, The door frame includes the column (1) and the cross beam (3), the cross beam (3) is hung on the column (1) through the screw rod and the clamp plate, and the mounting position of the cross beam (3) on the column (1) can be adjusted.

3. The four-channel hydrostatic tester of claim 1, wherein, The vertical actuator includes the vertical actuator A (2) and the vertical actuator B (13), the thrust and stroke of the vertical actuator A (2) are greater than those of the vertical actuator B (13).

4. The four-channel hydrostatic tester of claim 1, wherein, The head and tail ends of the vertical actuator, the transverse actuator (5) and the longitudinal actuator (15) are all mounted with the joint bearing.

5. The four-channel hydrostatic tester of claim 1, wherein, The base (12) is movably provided with the protective cover (11).

6. The four-channel hydrostatic tester of claim 3, wherein, The vertical actuator, the transverse actuator (5) and the longitudinal actuator (15) are provided with an oil source, the oil source is provided with four independent motor oil pumps, the oil source realizes the control of the vertical actuator A (2), the vertical actuator B (13), the transverse actuator (5) and the longitudinal actuator (15) through four-channel oil distributors, and the vertical actuator, the transverse actuator (5) and the longitudinal actuator (15) are also provided with pressure sensors, and the pressure sensors are electrically connected with the control system.

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