CN111351646A - Durability test device for electric strut spring and test method thereof - Google Patents

Abstract

The application relates to a durability testing device for an electric strut spring and a testing method thereof. The device includes: a base; a screw drive mechanism, which is arranged on the base, and the screw drive mechanism includes: a screw, which is horizontally arranged on the base The ball nut is set on the screw rod; the driving mechanism is set on the base and connected with the screw rod. The driving mechanism can drive the screw rod to rotate, and drive the ball nut to reciprocate linearly along the screw rod; the guide rod telescopic mechanism, It is arranged on the base, and the guide rod telescopic mechanism is used to squeeze the electric strut spring; the pressure sensor mechanism is arranged on the guide rod telescopic mechanism, and the pressure sensor mechanism is used to sense the pressure of the electric strut spring; the displacement sensor mechanism includes: The grating ruler is arranged on the base in parallel with the inner support tube; the displacement sensor is connected with the grating ruler and the sliding plate, and the displacement sensor is used to sense the displacement of the electric strut spring. The mechanical mechanism of the present application is simple, easy to control, reliable to operate, and easy to observe.

Description

Durability test device for electric strut spring and test method thereof

technical field

The present application relates to the technical field of automotive electric tailgate struts, and in particular, to a durability testing device for electric strut springs and a testing method thereof.

Background technique

The electric strut spring is used for the electric opening and closing of the tailgate of the car. With the rapid development of the automotive industry, the quality requirements for electric strut springs are getting higher and higher. Since the mechanical properties of the electric strut spring affect the life of the components, domestic and foreign users have higher and higher requirements for the testing equipment for the durability of the electric strut spring.

In the process of realizing this application, the applicant found that the prior art has at least the following problems:

The durability testing device of the electric strut spring in the prior art can only measure the durability of the spring, and cannot effectively observe the relationship between the spring stroke and the pressure value.

SUMMARY OF THE INVENTION

In order to solve the technical problems existing in the above-mentioned prior art, the embodiments of the present application provide a durability testing device for an electric strut spring and a testing method thereof. The specific technical solutions are as follows:

A first aspect, provides a kind of endurance test device for electric strut spring, for testing electric strut spring, wherein the endurance test device for electric strut spring comprises:

base;

The screw transmission mechanism is arranged on the base, and the screw transmission mechanism includes:

The screw rod is arranged horizontally on the base;

The ball nut is arranged on the screw rod;

The driving mechanism is arranged on the base and connected with the screw rod. The driving mechanism can drive the screw rod to rotate, and drive the ball nut to reciprocate linearly along the screw rod;

The guide rod telescopic mechanism is arranged on the base, and the guide rod telescopic mechanism includes:

The inner support tube, which is arranged in parallel with the screw rod, is used to carry the electric support rod spring;

The sliding plate is arranged on the inner support tube and connected with the ball nut. The sliding plate is used to connect with the side of the electric strut spring close to the sliding plate when testing the electric strut spring, and is driven by the ball nut to move along the inner support tube. , squeeze the electric strut spring;

The pressure sensor mechanism is arranged on the guide rod telescopic mechanism, and the pressure sensor mechanism includes:

The connecting block is arranged at one end of the inner support tube, and is located on the side of the electric strut spring away from the slide plate. When the slide plate squeezes the electric strut spring, the side of the electric strut spring away from the slide plate can be pressed against the connecting block. ;

The pressure sensor is connected with the connection block and is located on the side of the connection block away from the inner support tube. The pressure sensor is used to sense the pressure of the electric strut spring on the connection block;

Displacement sensor mechanism, including:

The grating ruler is arranged on the base in parallel with the inner support tube;

The displacement sensor is connected with the grating ruler and the sliding plate. The displacement sensor can be driven by the sliding plate to move along the grating ruler and sense its displacement.

In a first possible implementation manner of the first aspect, a workbench base is also included, and the workbench base includes:

The workbench support is constructed by profiles;

A plurality of cover plates are fixedly arranged at the bottom of the workbench support to enhance the stability of the workbench support;

A plurality of universal foot cups are arranged below the workbench support and are fixedly connected with the workbench support for supporting the workbench support;

The working table is arranged on the working table support, and the base is arranged on the working table.

In a second possible implementation manner of the first aspect, a linear sliding mechanism is also included, and the linear sliding mechanism includes:

The linear slide rail is arranged on the base in parallel with the screw rod;

The sliding block is arranged on the linear sliding rail and is connected with the ball nut and the sliding plate. The sliding block is connected with the ball nut through the sliding block. The ball nut drives the sliding block to slide along the linear sliding rail, and drives the sliding block to slide along the inner support tube.

In combination with the second possible implementation manner of the first aspect, in the third possible implementation manner of the first aspect, the linear sliding mechanism further includes:

The first stopper is arranged on the base corresponding to the sliding block, and is located on one side of the sliding direction of the sliding block;

The second stopper is arranged on the base corresponding to the slider, and is located on the other side in the sliding direction of the slider.

In a fourth possible implementation manner of the first aspect, the lead screw transmission mechanism further includes:

The first fixing bracket is arranged on the base and is located at one end of the screw rod close to the connection of the driving mechanism;

The first bearing is arranged on the first fixing bracket, and is sleeved on the end of the screw rod that is close to the connection of the driving mechanism;

The second fixing bracket is arranged on the base and is located at one end of the screw rod away from the driving mechanism;

The second bearing is arranged on the second fixing bracket and is sleeved on one end of the screw rod away from the driving mechanism, and the screw rod is mounted on the first fixing bracket and the second fixing bracket through the first bearing and the second bearing.

In a fifth possible implementation manner of the first aspect, the driving mechanism specifically includes:

The motor is fixed on the base and is located at one end of the screw rod;

One end of the coupling is connected with the motor, and the other end is connected with the screw rod.

In a sixth possible implementation manner of the first aspect, the guide rod telescopic mechanism further includes:

The third fixing bracket is arranged on the base, the side of the pressure sensor away from the connection block is arranged on the third fixing bracket, and one end of the inner support pipe is arranged on the third fixing bracket through the connection block and the pressure sensor;

The fourth fixing bracket is arranged on the base, and the other end of the inner support pipe is fixedly arranged on the fourth fixing bracket;

The outer support tube is sleeved on the inner support tube and is fixedly connected with the slide plate. The outer support tube is used to fit the electric support rod spring on the outer support tube when testing the electric support rod spring, so that the slide plate can squeeze the electric support through the outer support tube. rod spring.

In a seventh possible implementation manner of the first aspect, the displacement sensor mechanism further includes:

The fifth fixing bracket is arranged on the base and is fixedly connected with one end of the grating ruler;

The sixth fixing bracket is arranged on the base and is fixedly connected with the other end of the grating ruler, and the grating ruler is arranged on the base in parallel with the inner support tube through the fifth fixing bracket and the sixth fixing bracket;

One end of the connecting plate is connected with the displacement sensor, the other end is connected with the sliding plate, and the displacement sensor is connected with the sliding plate through the connecting plate.

In an eighth possible implementation manner of the first aspect, the inner support tube is arranged in parallel above the screw rod, and the grating scale is arranged parallel to the side surface of the inner support tube.

A second aspect provides a method for testing the durability testing device for an electric strut spring according to any one of the first aspects, comprising the following steps:

Put the electric strut spring on the inner support tube, and connect the slide plate with the side of the electric strut spring close to the slide plate;

According to the measuring stroke of the electric strut spring, adjust the distance that the ball nut moves linearly back and forth;

Start the drive mechanism, let the ball nut drive the slide plate to squeeze the electric strut spring, and make a linear motion;

Observe the pressure sensor and displacement sensor, and record their data.

Compared with the prior art, the present application has the following advantages:

The durability testing device for the electric strut spring of the present application adopts the driving mechanism to drive the screw rod to rotate, and drives the ball nut to move axially along the screw rod, thereby driving the slide plate to squeeze the electric strut spring, so that the electric strut spring is in the A linear reciprocating motion is performed between the connecting block and the sliding plate to measure the durability of the electric strut spring.

At the same time, when the electric strut spring is in compression and reciprocating motion, the pressure sensor mechanism and the displacement sensor mechanism monitor and count the change in pressure of the electric strut spring at different distances in real time, which can effectively observe the relationship between the spring stroke and the pressure value. The present application is not only simple in mechanical mechanism, convenient in control, reliable in operation, but also easy to observe.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a schematic structural diagram of a durability testing device for an electric strut spring according to an embodiment of the present application when testing an electric strut spring.

Fig. 2 is a schematic structural diagram of the durability testing device for the electric strut spring according to an embodiment of the present application, which is arranged on the base of the workbench.

FIG. 3 is a schematic structural diagram of a guide rod telescopic mechanism and a pressure sensor mechanism according to an embodiment of the present application.

FIG. 4 is a partial structural schematic diagram of a pressure sensor mechanism according to an embodiment of the present application.

FIG. 5 is a schematic structural diagram of a displacement sensor mechanism according to an embodiment of the present application.

Fig. 6 is the step flow schematic diagram of the test method of the durability test device for the electric strut spring according to the second embodiment of the present application.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

In an embodiment of the present application, Fig. 1 is a schematic structural diagram of a durability testing device 1 for an electric strut spring according to an embodiment of the present application when testing the electric strut spring 2. As shown in FIG. 1 , a durability test device 1 for an electric strut spring is used to test an electric strut spring 2 , and the durability test device 1 for an electric strut spring includes a base 3 , a screw drive mechanism 4 , and a drive mechanism 5 , guide rod telescopic mechanism 6, pressure sensor mechanism 7 and displacement sensor mechanism 8, wherein:

The base 3 is mainly a bearing screw transmission mechanism 4, a drive mechanism 5, a guide rod telescopic mechanism 6, a pressure sensor mechanism 7 and a displacement sensor mechanism 8; in this embodiment, there is no special requirement for the selection of the structure of the base 3, refer to this Those skilled in the art can make conventional choices. For example, the base 3 can be selected as a rectangular plate-like structure.

In a preferred embodiment, Fig. 2 is a schematic structural diagram of the durability testing device 1 for an electric strut spring according to an embodiment of the present application, which is arranged on the base 9 of the workbench. As shown in FIG. 2 , the durability testing device 1 for electric strut springs further includes a workbench base 9, and the workbench base 9 includes a workbench support 91, a plurality of cover plates 92, a plurality of universal foot cups 93, and a workbench base 9. The table top 94 and the worktable support 91 are constructed by profiles. Preferably, T-screw and die-casting corner seat are used for fixed connection at the overlapping part of the profiles, but it is not limited to this.

A plurality of cover plates 92 are fixedly arranged at the bottom of the workbench support 91, and the plurality of cover plates 92 are used to enhance the stability of the workbench support 91. Preferably, both ends of each cover plate 92 are fixedly connected to the two profiles adjacent to the bottom of the workbench support 91 , and the two profiles adjacent to the bottom of the workbench support 91 form a triangular shape to enhance the workbench support 91 . Stability, but not limited to this.

A plurality of universal foot cups 93 are arranged below the table support 91 and are fixedly connected with the table support 91, and the plurality of universal foot cups 93 are used to support the table support 91. The number of the plurality of universal foot cups 93 disclosed in this embodiment is four, and the four universal foot cups 93 are provided in the four corners of the lower end of the support table support 91 in a one-to-one correspondence manner through screw connection, but it is not limited to this. .

The work table 94 is arranged on the table support 91 , and the base 3 is arranged on the work table 94 . Preferably, the worktable 94 is fixedly connected with the worktable support 91, the base 3 and the worktable 94 by screws, but it is not limited thereto.

Please refer to FIG. 1 again, the screw drive mechanism 4 is arranged on the base 3 , the screw drive mechanism 4 includes a screw 41 and a ball nut 42 , the screw 41 is horizontally arranged on the base 3 , and the ball nut 42 is arranged on the screw 41 On the top, the ball nut 42 can be rotated through the screw rod 41 to drive it to move axially along the screw rod 41 .

Please refer to FIG. 1 again, the screw transmission mechanism 4 disclosed in this embodiment further includes a first fixing bracket 43 , a first bearing 44 , a second fixing bracket 45 and a second bearing 46 , and the first fixing bracket 43 is disposed on the base 3 . , located at the end of the screw rod 41 close to the connection of the drive mechanism 5, the first bearing 44 is arranged on the first fixing bracket 43, and is sleeved on the end of the screw rod 41 close to the connection of the driving mechanism 5, and the second fixing bracket 45 is arranged on the base 3. , located at one end of the screw rod 41 away from the driving mechanism 5 , the second bearing 46 is arranged on the second fixing bracket 45 and sleeved on the end of the screw rod 41 away from the driving mechanism 5 .

The screw rod 41 is installed on the first fixing bracket 43 and the second fixing bracket 45 through the first bearing 44 and the second bearing 46, and is horizontally arranged on the base 3 through the first fixing bracket 43 and the second fixing bracket 45, and then The setting method of the screw rod 4 is not limited to this, and those skilled in the art can also select other suitable setting methods according to actual needs.

Please refer to Fig. 1 again, the driving mechanism 5 is arranged on the base 3, and is connected with the screw rod 41, the driving mechanism 5 can drive the screw rod 41 to rotate, and drive the ball nut 42 to move linearly reciprocatingly along the screw rod 41. FIG. 4 is a partial structural schematic diagram of the pressure sensor mechanism 7 according to an embodiment of the present application. As shown in FIG. 4 , the drive mechanism 5 disclosed in this embodiment specifically includes a motor 51 and a coupling 52. The motor 51 is fixed on the base 3 and is located at one end of the screw rod 41. Preferably, the motor 51 is fixed on the base 3 through the motor bracket 53, but it is not limited to this.

One end of the coupling 52 is connected with the motor 51, and the other end is connected with the screw rod 41. The motor 51 is connected with the screw rod 41 through the coupling 52, so as to drive the screw rod 41 to rotate through the coupling 52, and the structure of the driving mechanism 5. It is not limited to this, and those skilled in the art can also select the driving mechanism 5 with other suitable structures according to the actual driving requirements.

The guide rod telescopic mechanism 6 is arranged on the base 3, and the guide rod telescopic mechanism 6 includes an inner support pipe 61 and a sliding plate 62, the inner support pipe 61 and the screw rod 41 are arranged in parallel, and the inner support pipe 61 is used to carry the electric strut spring 2. Preferably, the inner support tube 61 is arranged in parallel above the screw rod 41 to reduce the overall space occupied by the device, but it is not limited thereto.

The sliding plate 62 is arranged on the inner support tube 61 and is connected with the ball nut 42 . The sliding plate 62 is used to connect with the side of the electric strut spring 2 close to the sliding plate 62 when the electric strut spring 2 is tested, and is driven by the ball nut 42 to move along the inner support tube 61 to squeeze the electric strut spring 2, Measure the durability of the electric strut spring 2.

Fig. 3 is a schematic structural diagram of the guide rod telescopic mechanism 6 and the pressure sensor mechanism 7 according to an embodiment of the present application. As shown in FIGS. 1 and 3 , the guide rod telescopic mechanism 6 disclosed in this embodiment further includes a third fixing bracket 63 , a fourth fixing bracket 64 and an outer support tube 65 . The third fixing bracket 63 is arranged on the base 3 , and the pressure sensor The side of the 72 away from the connection block 71 is arranged on the third fixing bracket 63 , and one end of the inner support tube 61 is arranged on the third fixing bracket 63 through the connection block 71 and the pressure sensor 72 .

The fourth fixing bracket 64 is arranged on the base 3, the other end of the inner support tube 61 is fixedly arranged on the fourth fixing bracket 64, and the inner support tube 61 is arranged on the base 3 through the third fixing bracket 63 and the fourth fixing bracket 64. The outer support tube 65 is sleeved on the inner support tube 61 and is fixedly connected with the slide plate 62 , and the slide plate 62 can drive the outer support tube 65 to slide along the inner support tube 61 . Preferably, the outer support tube 65 is fixedly connected to the sliding plate 62 by screws, but it is not limited thereto.

The outer support tube 65 is used to fit the electric strut spring 2 on the outer support tube 65 when testing the electric strut spring 2, so that the slide plate 62 squeezes the electric strut spring 2 through the outer support tube 65, and then the guide rod telescopic mechanism 6 The structure is not limited to this, and those skilled in the art can also select the guide rod telescopic mechanism 6 with other suitable structures according to the actual driving requirements.

1 and 3 again, the pressure sensor mechanism 7 is arranged on the guide rod telescopic mechanism 6, and the pressure sensor mechanism 7 includes a connecting block 71 and a pressure sensor 72. The connecting block 71 is arranged at one end of the inner support tube 61 and is located at the The rod spring 2 is on the side away from the sliding plate 62 . When the sliding plate 62 squeezes the electric strut spring 2 , the side of the electric strut spring 2 away from the sliding plate 62 can be pressed against the connecting block 71 .

The pressure sensor 72 is connected to the connection block 71, and is located on the side of the connection block 71 away from the inner support tube 61. The side of the pressure sensor 72 that is away from the connecting block 71 disclosed in this embodiment is disposed on the third fixing bracket 63, but it is not limited thereto. When the sliding plate 62 squeezes the electric strut spring 2, it can drive the electric strut spring 2 to squeeze on the connecting block 71, and the connecting block 71 squeezes the pressure sensor 72. At this time, the pressure sensor 72 can sense the two pairs of the electric strut spring. Connect the pressure of the block 71 to monitor and count the pressure change of the electric strut spring in real time.

The displacement sensor mechanism 8 includes a grating scale 81 and a displacement sensor 82, and the grating scale 81 and the inner support tube 61 are arranged on the base 3 in parallel. Preferably, the grating scale 81 is arranged parallel to the side surface of the inner support tube 61, but it is not limited to this. The displacement sensor 82 is connected with the grating ruler 81 and the sliding plate 62, and the displacement sensor 82 can be driven by the sliding plate 62 to move along the grating ruler 81, and sense its displacement, so as to monitor and count the displacement change of the electric strut spring in real time.

FIG. 5 is a schematic structural diagram of the displacement sensor mechanism 8 according to an embodiment of the present application. As shown in FIGS. 1 and 5 , the displacement sensor mechanism 8 disclosed in this embodiment further includes a fifth fixing bracket 83 , a sixth fixing bracket 84 and a connecting plate 85 . The fifth fixing bracket 83 is arranged on the base 3 and is connected with the grating ruler. One end of 81 is fixedly connected, and the sixth fixing bracket 84 is arranged on the base 3 and is fixedly connected with the other end of the grating ruler 81. The grating ruler 81 is arranged in parallel with the inner support tube 61 through the fifth fixing bracket 83 and the sixth fixing bracket 84 On the base 3, one end of the connecting plate 85 is connected with the displacement sensor 82, and the other end is connected with the sliding plate 62. The displacement sensor 82 is connected with the sliding plate 62 through the connecting plate 85, but not limited thereto.

In a preferred embodiment, please refer to FIGS. 1 , 3 , 4 , and 5 again, the durability testing device 1 for the electric strut spring further includes a linear sliding mechanism 10 , and the linear sliding mechanism 10 includes a linear sliding rail 101 and a sliding block 102 . , the linear slide rail 101 and the screw rod 41 are arranged on the base 3 in parallel. Preferably, the linear slide rail 101 is fixed on the base 3 by means of screws, but it is not limited thereto.

The slider 102 is arranged on the linear slide rail 101 and can slide on the linear slide rail 101 . The sliding block 102 is connected with the ball nut 42 and the sliding plate 62 , the sliding block 62 is connected with the ball nut 42 through the sliding block 102 , the ball nut 42 drives the sliding block 102 to slide along the linear slide rail 101 , and drives the sliding block 62 to slide along the inner support tube 61 , but not limited to this.

In another preferred embodiment, please refer to FIG. 1 again, the linear sliding mechanism 10 further includes a first stopper 103 and a second stopper 104 . The first stopper 103 and the slider 102 are disposed on the base 3 corresponding to the slider 102 on one side in the sliding direction, the second block 104 and the slider 102 are arranged on the base 3 correspondingly, and on the other side in the sliding direction of the slider 102, the linear sliding mechanism 10 passes through the first block 103 and the second block 104 limits the displacement of the slider 102, thereby limiting the stroke of the electric strut spring 2, but not limited thereto.

In the second embodiment of the present application, Fig. 6 is a schematic flow chart of the steps of the test method S for the durability testing device for the electric strut spring according to the second embodiment of the present application. As shown in Figure 6, the test method S for the endurance test device of the electric strut spring includes the following steps S1-S4, wherein:

Step S1 , install the electric strut spring 2 . Put the electric strut spring 2 on the inner support tube 61, and connect the sliding plate 62 to the side of the electric strut spring 2 close to the sliding plate 62.

Specifically, the electric strut spring 2 is sheathed on the inner support tube 61, and one end thereof is sheathed and fixed on the outer support tube 65.

Step S2, adjusting the compression stroke. According to the measuring stroke of the electric strut spring 2, adjust the distance of the linear reciprocating movement of the ball nut 42.

Specifically, according to the measuring stroke of the electric strut spring 2 , the positions of the first stopper 103 and the second stopper 104 are adjusted and fixed, so that the ball nut 42 is placed between the first stopper 103 and the second stopper 104 . Linear reciprocating movement.

Step S3, start the test. Activate the drive mechanism 5, let the ball nut 42 drive the sliding plate 62 to squeeze the electric strut spring 2, and make a linear motion.

Specifically, the motor 51 is started, and the motor 51 drives the screw rod 41 to rotate in the forward and reverse directions through the coupling 52, drives the ball nut 42 to move axially along the screw rod 41, and drives the slider 102 along the linear slide rail 101, Reciprocating sliding between the first block 103 and the second block 104 , and driving the slide plate 62 to slide along the inner support tube 61 , squeezing the electric strut spring 2 reciprocally, and measuring the durability of the electric strut spring 2 .

Step S4, observe and record data. Observe pressure sensor 72 and displacement sensor 82 and record their data.

Specifically, when the electric strut spring 2 is in a compressing and reciprocating motion, the pressure sensor mechanism 72 and the displacement sensor 82 monitor and count the changes in the pressure of the electric strut spring 2 at different distances in real time, and record the data. The data can effectively observe the relationship between the spring stroke and the pressure value,

The above description shows and describes several preferred embodiments of the present application, but as mentioned above, it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as the exclusion of other embodiments, but can be used in various various other combinations, modifications and environments, and can be modified within the scope of the concept of the application described herein, using the above teachings or skill or knowledge in the relevant field. And the modification and change that those skilled in the art carry out do not depart from the spirit and scope of the application, then all should be within the protection scope of the appended claims of the application.

Claims (10)

1. An endurance testing apparatus for an electric stay spring for testing the electric stay spring, comprising:

a base;

screw drive mechanism set up in on the base, screw drive mechanism includes:

the screw rod is horizontally arranged on the base;

the ball nut is arranged on the screw rod;

the driving mechanism is arranged on the base and connected with the screw rod, and can drive the screw rod to rotate so as to drive the ball nut to do linear reciprocating motion along the screw rod;

the guide arm telescopic machanism set up in on the base, the guide arm telescopic machanism includes:

the inner supporting tube is arranged in parallel with the screw rod and is used for bearing the electric supporting rod spring;

the sliding plate is arranged on the inner supporting tube and connected with the ball nut, and the sliding plate is used for being connected with one side, close to the sliding plate, of the electric supporting rod spring when the electric supporting rod spring is tested, and is driven to move along the inner supporting tube through the ball nut to extrude the electric supporting rod spring;

pressure sensor mechanism set up in on the guide arm telescopic machanism, pressure sensor mechanism includes:

the connecting block is arranged at one end of the inner supporting tube and is positioned at one side of the electric support rod spring, which is far away from the sliding plate, and the sliding plate can tightly prop one side of the electric support rod spring, which is far away from the sliding plate, against the connecting block when extruding the electric support rod spring;

the pressure sensor is connected with the connecting block and is positioned on one side of the connecting block, which is far away from the inner supporting tube, and the pressure sensor is used for sensing the pressure of the electric supporting rod spring on the connecting block; a displacement sensor mechanism comprising:

the grating ruler is arranged on the base in parallel with the inner support tube;

and the displacement sensor is connected with the grating ruler and the sliding plate, can be driven by the sliding plate to move along the grating ruler and sense the displacement of the grating ruler.

2. The endurance testing apparatus for an electric strut spring according to claim 1, further comprising a table base, the table base including:

the workbench support is built by sectional materials;

the cover plates are fixedly arranged at the bottom of the workbench support and used for enhancing the stability of the workbench support;

the universal foot cups are arranged below the workbench support, are fixedly connected with the workbench support and are used for supporting the workbench support;

the worktable surface is arranged on the worktable support, and the base is arranged on the worktable surface.

3. The endurance testing apparatus for an electric strut spring according to claim 1, further comprising a linear sliding mechanism, the linear sliding mechanism including:

the linear sliding rail is arranged on the base in parallel with the screw rod;

the sliding block is arranged on the linear sliding rail and connected with the ball nut and the sliding plate, the sliding plate is connected with the ball nut through the sliding block, and the ball nut drives the sliding plate to slide along the linear sliding rail by driving the sliding block to slide.

4. The endurance testing apparatus for an electric strut spring according to claim 3, further comprising:

the first stop block is arranged on the base corresponding to the sliding block and positioned on one side of the sliding direction of the sliding block;

and the second stop block is arranged on the base corresponding to the sliding block and is positioned on the other side of the sliding block in the sliding direction.

5. The endurance testing apparatus for an electric strut spring according to claim 1, wherein the screw driving mechanism further comprises:

the first fixing support is arranged on the base and is positioned at one end of the screw rod, which is close to the connection of the driving mechanism;

the first bearing is arranged on the first fixing support and sleeved at one end of the screw rod, which is close to the connection of the driving mechanism;

the second fixing support is arranged on the base and is positioned at one end, far away from the driving mechanism, of the screw rod;

and the second bearing is arranged on the second fixing support and sleeved at one end of the screw rod, which is far away from the driving mechanism, and the screw rod is arranged on the first fixing support and the second fixing support through the first bearing and the second bearing.

6. The endurance testing apparatus for an electric strut spring according to claim 1, wherein the driving mechanism specifically comprises:

the motor is fixedly arranged on the base and is positioned at one end of the screw rod;

and one end of the coupler is connected with the motor, and the other end of the coupler is connected with the screw rod.

7. The endurance testing apparatus for an electric strut spring according to claim 1, wherein the guide bar retracting mechanism further comprises:

the third fixing support is arranged on the base, one side, away from the connecting block, of the pressure sensor is arranged on the third fixing support, and one end of the inner supporting tube is arranged on the third fixing support through the connecting block and the pressure sensor;

the other end of the inner supporting tube is fixedly arranged on the fourth fixed bracket;

the outer supporting tube is sleeved on the inner supporting tube and fixedly connected with the sliding plate, and the outer supporting tube is used for sleeving the electric supporting rod spring on the outer supporting tube when testing the electric supporting rod spring, so that the sliding plate extrudes the electric supporting rod spring through the outer supporting tube.

8. The endurance testing apparatus for an electric strut spring according to claim 1, wherein the displacement sensor mechanism further comprises:

the fifth fixing support is arranged on the base and is fixedly connected with one end of the grating ruler;

the sixth fixing support is arranged on the base and is fixedly connected with the other end of the grating ruler, and the grating ruler is arranged on the base in parallel with the inner support tube through the fifth fixing support and the sixth fixing support;

and one end of the connecting plate is connected with the displacement sensor, the other end of the connecting plate is connected with the sliding plate, and the displacement sensor is connected with the sliding plate through the connecting plate.

9. The durability test device for the electric stay spring according to claim 1, wherein the inner support tube is arranged above the screw rod in parallel, and the grating ruler is arranged on the side surface of the inner support tube in parallel.

10. A method for testing the endurance testing apparatus for an electric stay spring according to any one of claims 1 to 9, comprising the steps of:

sleeving the electric stay bar spring on the inner supporting tube, and connecting the sliding plate with one side of the electric stay bar spring close to the sliding plate;

adjusting the distance of the linear reciprocating movement of the ball nut according to the measuring stroke of the electric support rod spring;

starting a driving mechanism, and enabling the ball nut to drive the sliding plate to extrude the electric support rod spring and to do linear motion;

and observing the pressure sensor and the displacement sensor, and recording the data of the pressure sensor and the displacement sensor.

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