New energy automobile chassis strength testing device

Abstract

The application discloses a new energy automobile chassis strength testing device, which comprises a base frame, a longitudinal moving frame driven by a longitudinal screw rod driving module a is slidably connected to the inner wall of the base frame, a guide shaft sleeve driven by a transposition motor is rotatably connected to the inner wall of the longitudinal moving frame, a lifting platform is fixedly installed on the top surface of the longitudinal moving frame through a group of lifting push rods, a transposition rotating frame is fixedly installed on the top end of the transposition rotating shaft, a distance adjusting module is installed in the transposition rotating frame, and two symmetrical force measuring modules are drivingly connected to the circumferential surface of the distance adjusting module. Through the arrangement of the distance adjusting module, the test frame, the impact mechanism a and the impact mechanism b, the device can efficiently complete the strength test of the automobile chassis, and the device has the compression and tension test mode and the impact detection mode during the strength test.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of testing devices, in particular to a new energy automobile chassis strength testing device. BACKGROUND

[0002] In order to better ensure the load capacity of the new energy automobile chassis, the new energy automobile chassis load testing device is developed for the chassis load testing of the new energy automobile during the automobile design and production.

[0003] In the prior art, the patent file with the publication number CN112903315B discloses a new energy automobile chassis load testing device, wherein the road surface simulation mechanism is installed on the fixed base, the mechanism is matched with the driving simulation mechanism, during use, the first belt pulley at both ends is driven to rotate by the double-shaft servo motor, the second belt pulley is driven to realize linkage by the linkage belt, the second belt pulley is fixedly connected at both ends of the driving roller, and then the driving roller can be driven to rotate, the driving simulation mechanism is installed on the driving roller and the driven roller, so that the form simulation mechanism can work, the smooth roller surface, the groove roller surface and the convex roller surface are arranged on the outer walls of the driving roller and the driven roller, during use, the user can also customize the roller surface according to the needs, so that various road surface conditions can be simulated conveniently and quickly, and the data accuracy of the chassis load testing work can be better ensured, but the above testing device is not convenient for realizing the multi-mode strength testing of the automobile chassis, and therefore the application provides a new energy automobile chassis strength testing device to solve the problems in the background art. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the defects in the prior art, the purpose of the application is to provide a new energy automobile chassis strength testing device, the distance adjusting module, the testing frame, the impact mechanism a and the impact mechanism b are arranged, so that the device can efficiently complete the strength testing of the automobile chassis, and the device has the compression and tension testing mode and the impact detection mode during the strength testing, the multi-mode strength detection function is realized, and the functionality of the testing device is effectively improved.

[0006] (II) Technical solutions

[0007] In order to achieve the above object, the present application provides the following technical scheme, the new energy automobile chassis strength testing device, the technical scheme is: including the underframe, the inner wall of the underframe is slidably connected with the longitudinal guide frame driven by the longitudinal screw drive module a, the inner wall of the longitudinal guide frame is rotatably connected with the guide shaft sleeve driven by the transposition motor, the top surface of the longitudinal guide frame is fixedly installed with the lifting platform through a group of lifting push rods, the inner wall of the lifting platform is rotatably connected with the transposition rotating shaft, the inner wall of the guide shaft sleeve is slidably connected with the transposition rotating shaft and is drivingly matched, the top end of the transposition rotating shaft is fixedly installed with the transposition rotating frame, the inside of the transposition rotating frame is installed with the distance adjusting module, the peripheral surface of the distance adjusting module is drivingly connected with two symmetrically arranged force measuring modules, the surface of the transposition rotating frame is respectively provided with the pressure supply mechanism and two symmetrically arranged impact frames, the inside of the two impact frames is respectively installed with the impact mechanism a, the upper part of the underframe is slidably connected with the test frame, a group of axial push rods are installed between the opposite surfaces of the test frame and the underframe, the surface of the test frame is provided with four regularly distributed brackets, the top surface of the test frame is movably connected with the chassis to be tested through the bracket, the inside of the test frame is installed with the moving platform driven by the longitudinal screw drive module b, the inside of the moving platform is installed with the impact mechanism b, and the ports of the impact mechanism a and the impact mechanism b are fixedly communicated with the pressure supply mechanism.

[0008] As a preferred scheme, the cross sections of the guide shaft sleeve and the transposition rotating shaft are regular polygons, the axis of the lifting push rod is parallel to the axis of the guide shaft sleeve, and the surface of the underframe is fixedly installed with a single-chip microcomputer.

[0009] As a preferred scheme, the distance adjusting module comprises two symmetrically arranged transmission screws rotatably connected in the inside of the transposition rotating frame and a transmission motor fixedly arranged on the surface of the transposition rotating frame, the output shaft end of the transmission motor is fixedly installed with a driving bevel gear, the end portions of the two transmission screws are fixedly installed with driven bevel gears meshing with the driving bevel gear, the peripheral surfaces of the two transmission screws are respectively drivingly connected with the two force measuring modules, and the transmission motor is arranged between the two transmission screws.

[0010] As a preferred scheme, the force measuring module comprises a pressure applying seat slidably connected with the transposition rotating frame, the inner wall of the pressure applying seat is drivingly connected with the transmission screw, the top portion of the pressure applying seat is provided with two symmetrically arranged force measuring plates, the back surfaces of the two force measuring plates are fixedly installed with guide rods slidably connected with the pressure applying seat, the opposite surfaces of the two force measuring plates and the pressure applying seat are fixedly installed with pressure sensors a electrically connected with the single-chip microcomputer, and the opposite surfaces of the two force measuring plates are fixedly provided with cavities matched with the chassis to be tested.

[0011] As a preferred scheme, the pressure supply mechanism respectively comprises a gas pump fixed on the transposition frame surface and a pressure storage tank, the port of the gas pump is fixedly communicated with the pressure storage tank, the surface of the pressure storage tank is fixedly provided with a pressure outlet pipe, the inside of the pressure outlet pipe is fixedly provided with a gas pressure probe, and the surface of the pressure outlet pipe is respectively communicated with the impact mechanism a and the impact mechanism b.

[0012] As a preferred scheme, the impact mechanism a and the impact mechanism b respectively comprise an impact plate, a pressing plate and a plurality of gas pushing pieces communicated with each other through a connecting pipe, the circumferential surface of the gas pushing piece in the impact mechanism a is fixedly connected with the impact frame, the circumferential surface of the gas pushing piece in the impact mechanism b is fixedly connected with the moving table, the top surface of the connecting pipe is fixedly communicated with the pressure outlet pipe through a hose, the communication position of the hose and the pressure outlet pipe is fixedly provided with a solenoid valve, the movable end of the plurality of gas pushing pieces is fixedly connected with the pressing plate, and a plurality of pressure sensors b are fixedly arranged between the opposite surfaces of the pressing plate and the impact plate.

[0013] As a preferred scheme, the gas pushing piece comprises a sleeve, the inner wall of the sleeve is slidably connected with a pneumatic piston, the top surface of the pneumatic piston is fixedly provided with a pressure inlet cavity communicated with the connecting pipe between the opposite surfaces of the sleeve, the bottom surface of the pneumatic piston is fixedly provided with a gas impact rod, and the bottom end of the gas impact rod is fixedly connected with the pressing plate.

[0014] As a preferred scheme, the axis of the sleeve in the impact mechanism a is perpendicular to the axis of the sleeve in the impact mechanism b, the axis of the sleeve in the impact mechanism b is perpendicular to the horizontal plane, and the movement direction of the gas impact rod in the impact mechanism a is perpendicular to the axis of the transmission screw rod.

[0015] As a preferred scheme, the longitudinal screw rod driving module a and the longitudinal screw rod driving module b both comprise a driving screw rod and a driving motor, and the output shaft end of the driving motor is fixedly connected with the driving screw rod.

[0016] As a preferred scheme, the inside of the base frame is fixedly provided with two symmetrically arranged track grooves, and the bottom surface of the test frame is fixedly provided with guide rails slidably connected with the two track grooves.

[0017] (Three) beneficial effects

[0018] Compared with the prior art, the new energy automobile chassis strength test device has the following beneficial effects

[0019] The distance adjusting module, the test frame, the impact mechanism a and the impact mechanism b are arranged, so that the device can efficiently complete the strength test of the automobile chassis, and the device has the compression and tension test mode and the impact detection mode during the strength test, and the above-mentioned multi-mode strength detection function is realized, so that the functionality of the test device is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the structural schematic view of the new energy automobile chassis strength testing device of the application;

[0021] Figure 2 It is the structural schematic view of the new energy automobile chassis strength testing device of the application; Figure 1 It is the partial enlarged structural schematic view of A in the application;

[0022] Figure 3 It is the partial enlarged structural schematic view of B in the application; Figure 1

[0023] Figure 4 It is the structural schematic view of the longitudinal moving frame and the indexing motor of the application;

[0024] Figure 5 It is the partial enlarged structural schematic view of C in the application; Figure 4

[0025] Figure 6 It is the structural schematic view of the testing frame and the axial push rod of the application;

[0026] Figure 7 It is the structural schematic view of the to-be-tested chassis of the application;

[0027] Figure 8 It is the structural schematic view of the pressure applying seat and the force measuring plate of the application;

[0028] Figure 9 It is the sectional structural schematic view of the lifting push rod and the lifting platform of the application.

[0029] In the figure: 1, base frame; 2, longitudinal screw rod driving module a; 3, longitudinal moving frame; 4, indexing motor; 5, guide driving shaft sleeve; 6, lifting push rod; 7, lifting platform; 8, indexing rotating shaft; 9, indexing rotating frame; 10, distance adjusting module; 11, impact frame; 12, testing frame; 13, axial push rod; 14, bracket; 15, to-be-tested chassis; 16, longitudinal screw rod driving module b; 17, moving platform; 18, single-chip microcomputer; 19, pressure applying seat; 20, force measuring plate; 21, guide rod; 22, pressure sensor a; 23, air pump; 24, pressure storage tank; 25, pressure outlet pipe; 26, air pressure probe; 27, impact plate; 28, pressing plate; 29, pipe connection; 30, air pushing piece; 31, pressure sensor b. Embodiment

[0030] The application will be further described and explained in connection with specific embodiments and the accompanying drawings of the specification:

[0031] Please refer to Figures 1-9 The application: new energy automobile chassis strength testing device, the technical scheme adopted is: including base frame 1, the surface of base frame 1 is fixedly installed with single-chip microcomputer 18;

[0032] ​​The single-chip microcomputer 18 is used for detecting the working state of the corresponding power mechanism in the test device and receiving the working signal in the test device in real time;

[0033] The inner wall of the chassis 1 is slidingly connected with a longitudinal moving frame 3 driven by a longitudinal screw driving module a2, the inner wall of the longitudinal moving frame 3 is rotationally connected with a guide shaft sleeve 5 driven by a transposition motor 4, the top surface of the longitudinal moving frame 3 is fixedly installed with a lifting platform 7 through a group of lifting push rods 6, the axis of the lifting push rod 6 is parallel to the axis of the guide shaft sleeve 5, the inner wall of the lifting platform 7 is rotationally connected with a transposition rotating shaft 8, the inner wall of the guide shaft sleeve 5 is slidingly connected with the transposition rotating shaft 8 and is in transmission cooperation;

[0034] The cross sections of the guide shaft sleeve 5 and the transposition rotating shaft 8 are both regular polygons;

[0035] The cross sections of the guide shaft sleeve 5 and the transposition rotating shaft 8 are set, so that the transposition rotating shaft 8 can slide along the axis direction of the guide shaft sleeve 5 and can also rotate synchronously with the guide shaft sleeve 5;

[0036] The top end of the transposition rotating shaft 8 is fixedly installed with a transposition rotating frame 9, the inside of the transposition rotating frame 9 is installed with a distance adjusting module 10, the peripheral surface of the distance adjusting module 10 is in transmission cooperation with two symmetrically arranged force measuring modules;

[0037] The distance adjusting module 10 respectively includes two symmetrically arranged transmission screws rotationally connected to the inside of the transposition rotating frame 9 and a transmission motor fixed to the surface of the transposition rotating frame 9, the output shaft end of the transmission motor is fixedly installed with a driving bevel gear, the end portions of the two transmission screws are both fixedly installed with driven bevel gears meshing with the driving bevel gear, the peripheral surfaces of the two transmission screws are respectively in transmission cooperation with the two force measuring modules, and the transmission motor is arranged between the two transmission screws;

[0038] The transmission motor, the driving bevel gear, the driven bevel gears and the two transmission screws are set, so that the two transmission screws can coaxially and synchronously rotate in opposite directions, the two force measuring modules can be synchronously close to or away from each other through the coaxial and synchronous opposite rotation of the two transmission screws, so as to change the distance between the two force measuring modules, and the pressure and strength detection operation of the to-be-detected chassis 15 can be realized through the change of the distance between the two force measuring modules;

[0039] The force measuring module includes a pressure applying seat 19 slidingly connected with the transposition rotating frame 9, the inner wall of the pressure applying seat 19 is in transmission cooperation with the transmission screw, the top portion of the pressure applying seat 19 is provided with two symmetrically arranged force measuring plates 20, and the opposite surfaces of the two force measuring plates 20 are fixedly provided with a cavity matched with the to-be-detected chassis 15;

[0040] The back surface of each of the two force measuring plates 20 is fixedly installed with a guide rod 21 in sliding connection with the pressure applying seat 19, the cross section of the guide rod 21 is T-shaped, and the opposite surface between the two force measuring plates 20 and the pressure applying seat 19 is fixedly installed with a pressure sensor a22 in electrical connection with the single-chip microcomputer 18;

[0041] In work, the pressure sensor a22 is used for monitoring the force data of the force measuring plate 20 in real time, and the pressure sensor a22 feeds back the monitored real-time data to the single-chip microcomputer 18;

[0042] The surface of the transposition rotary frame 9 is respectively installed with a pressure supply mechanism and two symmetrically arranged impact frames 11, the inside of each of the two impact frames 11 is installed with an impact mechanism a, the upper part of the base frame 1 is in sliding connection with a test frame 12, the inside of the base frame 1 is fixedly provided with two symmetrically arranged track grooves, the bottom surface of the test frame 12 is fixedly installed with guide rails in sliding connection with the two track grooves, and a group of axial push rods 13 are installed between the opposite surface between the test frame 12 and the base frame 1;

[0043] The surface of the test frame 12 is installed with four regularly distributed brackets 14, the top surface of the test frame 12 is movably connected with a to-be-tested bottom plate 15 through the brackets 14, and the inside of the test frame 12 is installed with a moving table 17 driven by a longitudinal screw rod driving module b16;

[0044] The longitudinal screw rod driving module a2 and the longitudinal screw rod driving module b16 each include a driving screw rod and a driving motor, and the output shaft end of the driving motor is fixedly connected with the driving screw rod.

[0045] The inside of the moving table 17 is installed with an impact mechanism b, and the ports of the impact mechanism a and the impact mechanism b are fixedly communicated with the pressure supply mechanism.

[0046] The pressure supply mechanism includes a gas pump 23 and a pressure storage tank 24 fixed to the surface of the transposition rotary frame 9, the port of the gas pump 23 is fixedly communicated with the pressure storage tank 24, the surface of the pressure storage tank 24 is fixedly installed with a pressure outlet pipe 25, the inside of the pressure outlet pipe 25 is fixedly installed with a gas pressure probe 26, and the surface of the pressure outlet pipe 25 is respectively communicated with the impact mechanism a and the impact mechanism b.

[0047] The impact mechanism a and the impact mechanism b each include an impact plate 27, a pressing plate 28 and a group of gas pushing pieces 30 communicated with each other through a joint pipe 29, the circumferential surface of the gas pushing piece 30 in the impact mechanism a is fixedly connected with the impact frame 11, and the circumferential surface of the gas pushing piece 30 in the impact mechanism b is fixedly connected with the moving table 17;

[0048] The top surface of the joint pipe 29 is fixedly communicated with the pressure outlet pipe 25 through a hose, an electromagnetic valve is fixedly arranged at the communication position between the hose and the pressure outlet pipe 25, the electromagnetic valve is controlled by the single-chip microcomputer 18, and the electromagnetic valve is used for controlling whether the hose and the pressure outlet pipe 25 are communicated or not.

[0049] The movable ends of a group of air pushing pieces 30 are fixedly connected with the pressing plate 28, a group of pressure sensors b31 are fixedly installed between the opposite surfaces of the pressing plate 28 and the impact plate 27, the pressure sensors b31 feed the monitored real-time signals to the single-chip microcomputer 18 when working, and the single-chip microcomputer 18 assists in measuring the test results according to the data feedback of the pressure sensors b31.

[0050] The single-chip microcomputer 18, the pressure sensors b31 and the pressure sensors a22 can be customized or selected according to actual requirements;

[0051] The air pushing piece 30 comprises a sleeve, a pneumatic piston is slidingly connected to the inner wall of the sleeve, a pressure inlet cavity in communication with the pipe junction 29 is fixedly arranged between the top surface of the pneumatic piston and the opposite surface of the sleeve, and a gas impact rod is fixedly installed on the bottom surface of the pneumatic piston, and the bottom end of the gas impact rod is fixedly connected with the pressing plate 28.

[0052] The axis of the sleeve in the impact mechanism a is perpendicular to the axis of the sleeve in the impact mechanism b, the axis of the sleeve in the impact mechanism b is perpendicular to the horizontal plane, and the movement direction of the gas impact rod in the impact mechanism a is perpendicular to the axis of the transmission screw rod.

[0053] The working principle of the present application is that the present device is mainly suitable for strength test operation of a new energy automobile chassis, before the test operation, the lifting push rod 6 is fully moved downward, and the chassis 15 to be tested is placed on the bracket 14;

[0054] During the test operation, the present device is provided with multiple test modes;

[0055] The first test mode is a compression and tension test mode, in the compression and tension test mode, the specified test position of the chassis 15 to be tested is arranged in the two cavities by adjusting the positions of the lifting push rod 6, the axial push rod 13 and the longitudinal screw rod driving module a2, after the arrangement, when the tension detection of the chassis 15 to be tested is needed, the two force measuring modules are away from each other under the control of the distance adjusting module 10, the pressure sensors a22 in the inner force measuring plates 20 generate monitoring feedback data, when the pressure sensors a22 generate a sudden value, the peak value of the pressure sensors a22 is recorded, and then the tension strength data of the chassis 15 to be tested is measured, when the compression detection of the chassis 15 to be tested is needed, the two force measuring modules are close to each other under the control of the distance adjusting module 10, the pressure sensors a22 in the outer force measuring plates 20 generate monitoring feedback data, when the pressure sensors a22 generate a sudden value, the peak value of the pressure sensors a22 is recorded, and then the compression strength data of the chassis 15 to be tested is measured, and in the compression and tension strength detection mode, the detection position of the chassis 15 to be tested can be adjusted in multiple directions and multiple points by adjusting the arrangement angle of the transposition rotary frame 9;

[0056] The second test mode is the impact detection mode. In the impact detection mode, the impact mechanism a and the impact mechanism b are selected to work. When impact detection is needed, the instantaneous impact force of the air impact rod on the measured chassis 15 can be controlled through the arrangement of the air pump 23, the pressure storage tank 24 and the air pressure probe 26. Specifically, when impact detection is performed, the electromagnetic valve at the selected position is closed. After the electromagnetic valve is closed, the air pump 23 continuously sends pressure to the inside of the pressure storage tank 24. When the pressure value of the air pressure probe 26 reaches the set value, the electromagnetic valve is opened, and the pressure inside the pressure storage tank 24 is instantaneously sent out, thereby realizing the impact strength test of the air impact rod. By changing the air pressure probe 26 monitoring threshold at the opening time of the electromagnetic valve, the instantaneous impact force of the air impact rod can be quickly changed. In the impact detection mode, by changing the arrangement angle of the transposition rotary frame 9 and the spatial arrangement position of the moving table 17, the detection position during the impact strength detection of the measured chassis 15 can be quickly changed.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the scope of protection of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A new energy vehicle chassis strength testing device, comprising a chassis (1), characterized in that: The inner wall of the chassis (1) is slidably connected with a longitudinal moving frame (3) driven by a longitudinal screw driving module a (2), the inner wall of the longitudinal moving frame (3) is rotatably connected with a guide shaft sleeve (5) driven by a transposition motor (4), the top surface of the longitudinal moving frame (3) is fixedly installed with a lifting platform (7) through a group of lifting push rods (6), the inner wall of the lifting platform (7) is rotatably connected with a transposition rotating shaft (8), the inner wall of the guide shaft sleeve (5) is slidably connected and drivingly connected with the transposition rotating shaft (8), the top end of the transposition rotating shaft (8) is fixedly installed with a transposition rotating frame (9), the inside of the transposition rotating frame (9) is installed with a distance adjusting module (10), the peripheral surface of the distance adjusting module (10) is drivingly connected with two symmetrically arranged force measuring modules, the surface of the transposition rotating frame (9) is respectively installed with a pressure supply mechanism and two symmetrically arranged impact frames (11), the inside of the two impact frames (11) is respectively installed with an impact mechanism a, the upper portion of the chassis (1) is slidably connected with a test frame (12), a group of axial push rods (13) are installed between the opposite surfaces of the test frame (12) and the chassis (1), the surface of the test frame (12) is installed with four regularly distributed brackets (14), the top surface of the test frame (12) is movably connected with a to-be-tested chassis (15) through the brackets (14), the inside of the test frame (12) is installed with a moving table (17) driven by a longitudinal screw driving module b (16), the inside of the moving table (17) is installed with an impact mechanism b, the ports of the impact mechanism a and the impact mechanism b are fixedly communicated with the pressure supply mechanism.

2. The new energy vehicle chassis strength testing device according to claim 1, characterized in that: The cross sections of the guide shaft sleeve (5) and the transposition rotating shaft (8) are regular polygons, the axis of the lifting push rod (6) is parallel to the axis of the guide shaft sleeve (5), and the surface of the chassis (1) is fixedly installed with a single-chip microcomputer (18).

3. The new energy vehicle chassis strength testing device according to claim 2, characterized in that: The distance adjusting module (10) respectively comprises two symmetrically arranged transmission screws rotatably connected in the inside of the transposition rotating frame (9) and a transmission motor fixedly arranged on the surface of the transposition rotating frame (9), the output shaft end of the transmission motor is fixedly installed with a driving bevel gear, the end portions of the two transmission screws are fixedly installed with driven bevel gears meshing with the driving bevel gear, the peripheral surfaces of the two transmission screws are respectively drivingly connected with the two force measuring modules, and the transmission motor is arranged between the two transmission screws.

4. The new energy vehicle chassis strength testing device according to claim 3, characterized in that: The force measuring module comprises a pressure applying seat (19) slidably connected with the transposition rotating frame (9), the inner wall of the pressure applying seat (19) is drivingly connected with the transmission screw, the top portion of the pressure applying seat (19) is provided with two symmetrically arranged force measuring plates (20), the back surfaces of the two force measuring plates (20) are fixedly installed with guide rods (21) slidably connected with the pressure applying seat (19), the opposite surfaces of the two force measuring plates (20) and the pressure applying seat (19) are fixedly installed with pressure sensors a (22) electrically connected with the single-chip microcomputer (18), and the opposite surfaces of the two force measuring plates (20) are fixedly provided with cavities matched with the to-be-tested chassis (15).

5. The new energy vehicle chassis strength testing device according to claim 1, characterized in that: The pressure supply mechanism respectively comprises a gas pump (23) and a pressure storage tank (24) fixed on the surface of the transposition frame (9), the port of the gas pump (23) is fixedly communicated with the pressure storage tank (24), the surface of the pressure storage tank (24) is fixedly provided with a pressure outlet pipe (25), the inside of the pressure outlet pipe (25) is fixedly provided with a gas pressure probe (26), and the surface of the pressure outlet pipe (25) is respectively communicated with the impact mechanism a and the impact mechanism b.

6. The new energy vehicle chassis strength testing device according to claim 5, characterized in that: The impact mechanism a and the impact mechanism b respectively comprise an impact plate (27), a pressing plate (28) and a group of gas pushing pieces (30) communicated with each other through a connecting pipe (29), the circumferential surface of the gas pushing piece (30) in the impact mechanism a is fixedly connected with the impact frame (11), the circumferential surface of the gas pushing piece (30) in the impact mechanism b is fixedly connected with the moving table (17), the top surface of the connecting pipe (29) is fixedly communicated with the pressure outlet pipe (25) through a hose, an electromagnetic valve is fixedly arranged at the communication position of the hose and the pressure outlet pipe (25), the movable end of the group of gas pushing pieces (30) is fixedly connected with the pressing plate (28), and a group of pressure sensors b (31) are fixedly arranged between the opposite surfaces of the pressing plate (28) and the impact plate (27).

7. The new energy vehicle chassis strength testing device according to claim 6, characterized in that: The gas pushing piece (30) comprises a sleeve, a pneumatic piston is slidably connected to the inner wall of the sleeve, a pressure inlet cavity communicated with the connecting pipe (29) is fixedly arranged between the top surface of the pneumatic piston and the opposite surface of the sleeve, and a gas impact rod is fixedly arranged on the bottom surface of the pneumatic piston.

8. The new energy vehicle chassis strength testing device according to claim 7, characterized in that: The axis of the sleeve in the impact mechanism a is perpendicular to the axis of the sleeve in the impact mechanism b, the axis of the sleeve in the impact mechanism b is perpendicular to the horizontal plane, and the movement direction of the gas impact rod in the impact mechanism a is perpendicular to the axis of the transmission screw rod.

9. The device for testing the strength of a new energy vehicle chassis according to claim 1, characterized in that: The longitudinal screw rod driving module a (2) and the longitudinal screw rod driving module b (16) both comprise a driving screw rod and a driving motor, and the output shaft end of the driving motor is fixedly connected with the driving screw rod.

10. The new energy vehicle chassis strength testing device according to claim 9, characterized in that: The inside of the base frame (1) is fixedly provided with two symmetrically arranged track grooves, and the bottom surface of the test frame (12) is fixedly provided with guide rails in sliding connection with the two track grooves.

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