CN207816581U - One kind being used for the automatic full inspection test equipment of automobile power back door screw rod - Google Patents

Abstract

The present application discloses an automatic full-check test equipment for electric tailgate screws of automobiles, which includes a test bracket, and also includes a test bracket that passes through the top of the test bracket and can move longitudinally along the test bracket, and is used to connect the test bracket to the test bracket through a nut. The screw rod is longitudinally fixed to the guide part at its top; the clamping part installed on the test bracket for clamping the screw rod to be tested; the impact load installed at the bottom of the guide part for jacking up the guide part part; a detection part connected to the clamping part and the impact loading part respectively. Using this device, the guide part fixes the screw rod to be tested longitudinally, the clamping part clamps the side of the screw rod to be tested, and the impact loading part pushes up the guide part to separate the nut from the screw rod to be tested; at the same time The detection part is started to measure various performance parameters of the screw to be tested. Due to the coupled loading of clamping and impact loading, it is closer to the actual stress of the screw to be tested, so the measured performance parameters are more accurate.

Description

A kind of automatic full inspection and testing equipment for electric tailgate screw of automobile

technical field

The utility model relates to the technical field of detection, in particular to an automatic full detection test equipment for electric tailgate screws of automobiles.

Background technique

In recent years, with the improvement of material living standards, consumers' demand for automobiles has been increasing, and correspondingly, the requirements for the safety and comfort of automobiles have also increased.

Taking the car tailgate as an example, the pace of transition from the traditional car tailgate to the intelligent car electric tailgate is also getting faster and faster. At present, most electric tailgates of automobiles usually include electric tailgate struts, lock blocks, electric suction motors and control components, etc. Among them, electric tailgate struts include screws, nuts, load springs, dampers, reduction boxes and electric motors, etc. . Generally, the electric motor transmits the output torque to the screw rod through the reduction box and damper, so that the screw rod moves linearly relative to the nut, and the rotational motion of the electric motor is changed into the linear motion of the nut relative to the screw rod, thereby realizing the lifting of the electric tailgate. However, in the actual application process, the screw rod in the tailgate electric strut is prone to breakage or bending, which lacks flexibility and controllability to a certain extent, which makes the tailgate of the car prone to scratching or pinching. Therefore, it is particularly necessary to fully detect the screw rod of the electric tailgate of the automobile.

With the wide application of electric tailgates in automobiles, testing the impact strength of the screw in the electric tailgate support, the tightness of the screw riveting and the bending strength of the screw has gradually become a necessary testing step before leaving the factory. However, at present, each test parameter of the screw is usually tested separately on different test equipment. The test parameters measured each time are relatively single, which cannot simulate the complex force of the screw in the actual work project. Therefore, the obtained screw resistance Performance parameters such as impact strength, screw rivet tightness, and screw bending strength are inaccurate, and the test results have large deviations.

Utility model content

In view of this, the purpose of this utility model is to provide an automatic full-test equipment for electric tailgate screw rods of automobiles, which can accurately obtain the detection results of various performance parameters of the screw rods in the electric tailgate struts.

The specific plan is as follows:

The utility model provides an automatic full detection test equipment for the electric tailgate screw of the automobile, which includes a test bracket and also includes:

A guide part that passes through the top of the test support and can move longitudinally along the test support, and is used to longitudinally fix the screw to be tested on the top of the test support through a nut;

A clamping part installed on the test bracket for clamping the screw rod to be tested;

an impact loading part installed at the bottom of the guide part and used to jack up the guide part;

A detecting part connected respectively with the clamping part and the impact loading part and used for detecting the load on the screw rod to be tested.

Preferably, the guide part includes:

An upper top plate for supporting the screw to be tested;

a lower base plate installed above the impact loading portion;

A guide column arranged between the upper top plate and the lower bottom plate for guiding the loading direction of the impact loading part.

Preferably, the clamping part includes:

A moving clamp for clamping the screw to be tested;

A transmission device connected to the movable clamp block and used to drive the movable clamp block to clamp or loosen the screw rod to be tested;

A clamping driving device connected with the transmission device and used to drive the transmission device to move.

Preferably, the transmission device includes:

a crank linkage connected to the clamping drive;

Lead screw nuts that are respectively connected with the movable clamp block and the crank linkage mechanism.

Preferably, the impact loading part includes:

a top block located at the bottom of the lower floor and used to jack up the lower floor;

An impact-loaded driving device connected with the top block and used to drive the top block to move longitudinally.

Preferably, the detection unit includes:

a first force sensor located between the lower base plate and the top block and installed on the bottom of the lower base plate for detecting the impact load value applied by the impact loading part;

A second force sensor installed on the side of the movable clamping block close to the screw rod to be tested and used for detecting the applied pressure value of the clamping part.

Preferably, it also includes a loading and unloading part installed on the test bracket for loading and unloading the screw to be tested.

Preferably, the loading and unloading part includes:

A splint for clamping the bottom of the screw to be tested;

a support plate connected to the splint for supporting the splint;

A pillar connected between the support plate and the test bracket for fixing the support plate;

A loading and unloading drive device installed on the support plate and connected with the clamping plate for driving the clamping plate to open or close.

Preferably, it also includes:

A display unit connected to the detection unit for collecting and displaying the load on the screw to be tested;

A control part that is respectively connected to the detection part, the clamping part and the impact loading part and used to control the action of the clamping part and the impact loading part according to the received feedback information from the detection part.

With respect to the background technology, the utility model provides a kind of automatic full inspection test equipment for the electric tailgate screw of the automobile, which includes passing through the top of the test bracket and being able to move longitudinally along the test bracket, for passing through the nut Fix the screw rod to be tested longitudinally on the guide part at its top; be installed on the test bracket for clamping the clamping part of the screw rod to be tested; be installed at the bottom of the guide part for jacking up the guide part The impact loading part; the detection part connected to the clamping part and the impact loading part respectively, and used to detect the load on the screw rod to be tested.

Put the screw rod to be tested into the guide part, and tighten the nut on the top of the screw rod to be tested, so that the screw rod to be tested is longitudinally fixed on the guide part.

Start the clamping part, the clamping part clamps the side of the screw to be tested, and the screw to be tested will not move axially; at the same time, the detection part detects the load applied by the clamping part to the side of the screw to be tested value, so as to determine the ability of the screw to be tested to resist bending deformation.

Then start the impact loading part, the impact loading part jacks up the guide part, so that the bottom of the guide part is subjected to a vertical upward load; since the side of the screw rod to be tested has been clamped by the guide part, it cannot Axial movement, so the upward load received by the guide part is continuously applied to the nut; as the load loaded by the impact loading part increases, when it reaches a certain level, it can overcome the connection between the nut and the screw to be tested. Strength, so that the guide part moves upwards along the test bracket relative to the screw to be tested, and the nut will fall off from the top of the screw to be tested; at the same time, the detection part detects the force applied by the impact loading part to the bottom of the guide Load value, so as to determine the impact strength of the screw to be tested and the tightness of the screw riveting.

During the entire test process, the clamping part and the impact loading part can simultaneously apply load to the screw to be tested, realizing the coupling of clamping and impact loading, which is relatively close to the stress situation of the screw to be tested in the actual working process , the measurement method is more reasonable, therefore, the measured performance parameters of the screw to be tested are more accurate.

Description of drawings

In order to illustrate the embodiment of the utility model more clearly, the accompanying drawings used in the embodiment will be briefly introduced below. Obviously, the accompanying drawings in the following description are only embodiments of the utility model. For technical personnel, on the premise of not paying creative work, other drawings can also be obtained according to the provided drawings.

Fig. 1 is the schematic diagram of the structure that is used for the automatic full detection test equipment of automobile electric tailgate screw provided by a kind of specific embodiment of the utility model;

Fig. 2 is another view of Fig. 1;

Fig. 3 is the front view of Fig. 1;

Fig. 4 is the side view of Fig. 1;

FIG. 5 is a top view of FIG. 1 .

The accompanying drawings are marked as follows:

Test bracket 1, guide part 2, clamping part 3, impact loading part 4, detection part 5, loading and unloading part 6, display part 7, control switch 8, balance tester 9 and barometer 10;

Support top plate 11, support bottom plate 12 and support side plate 13;

Upper top plate 21, lower bottom plate 22 and guide column 23;

Transmission device 31 and clamping drive device 32;

Lead screw nut 311 and crank linkage mechanism 312;

Jack block 41 and impact loading driving device 42;

a first force sensor 51;

Clamping plate 61, support plate 62, pillar 63 and loading and unloading driving device 64.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying 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 them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In order to enable those skilled in the art to better understand the solution of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to Fig. 1 to Fig. 5, Fig. 1 is a schematic diagram of the structure of the automatic full detection test equipment for the electric tailgate screw provided by a specific embodiment of the present invention; Fig. 2 is another view of Fig. 1; Fig. 3 1 is a front view; FIG. 4 is a side view of FIG. 1; FIG. 5 is a top view of FIG. 1.

The embodiment of the utility model discloses an automatic full inspection test equipment for electric tailgate screws of automobiles, comprising a test bracket 1 , a guide part 2 , a clamping part 3 , an impact loading part 4 , a detection part 5 and a loading and unloading part 6 .

The test bracket 1 is generally used to support other components. In this specific embodiment, the test stand 1 specifically includes a supporting top plate 11 , a supporting bottom plate 12 and a supporting side plate 13 arranged between the supporting top plate 11 and the supporting bottom plate 12 . A guide part 2 and a loading and unloading part 6 are installed on the supporting top 11 , wherein the guiding part 2 passes through the supporting top plate 11 , and the loading and unloading part 6 is installed on the lower surface of the supporting top 11 . The upper surface on the support base plate 12 is equipped with an impact loading part 4, and the lower surface of the support base plate 12 is equipped with four support legs for supporting the whole set of equipment and four universal wheels for conveniently moving the whole set of equipment, the four support legs It can be set as a retractable support leg, so that there is no interference when moving the whole set with four universal wheels. Of course, the structure of the lower surface of the support base 12 is not limited thereto. The clamping part 3 is generally installed between the supporting top plate 11 and the supporting bottom plate 12 . The supporting side plate 13 adopts an open structure. In this specific embodiment, it is composed of four square metal supporting columns. On the one hand, it is convenient for the operator to observe the operation of the equipment in real time. The structure of the side plate 13 is not limited thereto either. In this specific embodiment, the test bracket 1 is made of aluminum alloy. Of course, the structure and material of the test bracket 1 can also be replaced by other solutions, which will not affect the realization of the purpose of the utility model.

The guide part 2 usually passes through the top of the test stand 1 and can move longitudinally along the test stand 1 . The guide part 2 is mainly used to longitudinally fix the screw to be tested on its top through a nut. In this specific embodiment, the guide part 2 specifically includes an upper top board 21 , a lower bottom board 22 and a guide column 23 .

The upper top plate 21 is an ordinary square metal plate, and three through circular countersink holes are opened on the metal plate. One of the holes is located in the middle of the upper top plate 21, and is mainly used to install the screw rod to be tested; specifically, the screw rod to be tested passes upwards from the bottom of the upper top plate 21 and is fixed on the upper top plate 21 with a nut, naturally, the screw rod to be measured The central axis is on the longitudinal symmetry plane of the upper top plate 21 . The remaining two holes are symmetrically distributed on both sides of the middle hole, specifically at the two ends of the upper top plate 21, and are mainly used to install the guide column 23. The guide column 23 can be fixed on the upper top plate 21 by set screws. Of course, the guide column The fixing method of 23 is not limited to this.

The lower bottom plate 22 is also a common square metal plate with the same size as the upper top plate 21, and two circular countersink holes connected with the circular countersink holes at the two ends of the upper top plate 21 are provided on this metal plate. The countersunk hole is mainly used to fix the bottom of the guide column 23, and the guide column 23 can also be fixed on the lower base plate 22 with set screws. Of course, other fixing methods can also be used, and it is not limited thereto.

In this specific embodiment, the guide column 23 is specifically two identical cylindrical metal rods that pass through the supporting top plate 11. The two metal rods are mainly used to guide the loading direction of the impact loading part 4, preventing the impact load from moving in the direction of the impact load. Deviations occur and affect the measurement results. Of course, the structure of the guide column 23 is not limited thereto.

The clamping part 3 is usually installed on the test bracket 1 and is mainly used for clamping the screw to be tested. In this specific embodiment, the clamping part 3 includes a moving clamping block, a transmission device 31 and a clamping drive device 32 .

The clamping surface of the movable clamping block is the same circular arc surface as the side surface of the screw rod to be tested. Of course, the movable clamping block can also be a V-shaped clamping block. Devices such as rubber pads are arranged on the clamping surface of the movable clamp block to increase the friction between the movable clamp block and the screw rod to be tested, and to facilitate fixing the screw rod to be tested. The movable clamping block can be composed of two clamping blocks, wherein one of the two clamping blocks can be movable and the other can be fixed; of course, the two clamping blocks can also be two movable.

The transmission device 31 is connected with the movable clamp block, and is mainly used to drive the movable clamp block to clamp or loosen the screw rod to be tested. It should be noted that, in this specific embodiment, the transmission device 31 is preferably a combined form of a screw nut 311 and a crank linkage mechanism 312 . The connecting rod in the crank-link mechanism 312 is connected with the clamping drive device 32, so that the crank rotates, and the crank drives the leading screw connected thereto to rotate together, and drives the nut slider on the leading screw to move linearly; It is connected with the moving clamp block, and the moving clamp block approaches or moves away from the screw rod to be tested along with the nut slider, so that the screw rod to be tested can be clamped or loosened through power transmission. Of course, the structure of the transmission device 31 is not limited thereto, and can also be replaced by other similar solutions.

The clamping drive device 32 is located below the support top plate 11, fixed on the support base plate 12, and connected with the crank link structure 312 of the transmission device 31, and is mainly used to drive the crank link mechanism 312 to realize the clamping of the screw to be tested. The clamping drive device 32 is preferably a clamping cylinder, and the connecting rod of the crank linkage mechanism 312 passes through the support top plate 11 in the vertical direction and is connected with the clamping arm of the clamping cylinder. When starting the clamping cylinder, the clamping cylinder clamps the connecting rod so that the connecting rod drives the crank to rotate, thereby completing the power output. Of course, the type and installation position of the clamp driving device 32 are not limited thereto.

The impact loading part 4 is installed on the bottom plate of the lower bottom plate 22 of the guide part 2 and is mainly used for jacking up the guide part 2 . In this specific embodiment, the impact loading part 4 includes a top block 41 and an impact loading driving device 42 .

The jacking block 41 is specifically a square metal block, and is mainly used for jacking up the lower bottom plate 22 . It is worth noting that there is a certain longitudinal distance between the top of the metal block and the bottom of the lower bottom plate 22, which is convenient for the top block 41 to apply impact load to the guide part 2, but the longitudinal distance should not be too far, so as not to cause damage during the loading process. , the top block 41 is offset, which affects the detection result.

The impact loading driving device 42 is fixed on the support base 12 and connected to the bottom of the top 41 , and is mainly used to drive the top block 41 to move longitudinally. In this specific embodiment, the impact loading driving device 42 is preferably an impact cylinder, and the output end of the impact cylinder is fixed together with the top block 41 through bolts and nuts. Of course, other schemes can be used for the type and connection mode of the impact loading driving device 42 , does not affect the purpose of realizing the utility model.

The detection part 5 is respectively connected with the clamping part 3 and the impact loading part 4, and is mainly used for detecting the load on the screw to be tested. In this specific embodiment, the detection part 5 includes a first force sensor 51 and a second force sensor.

The first force sensor 51 is located between the lower base plate 22 and the top block 41, specifically an S-shaped force sensor installed on the bottom of the lower base plate 22, and is mainly used to detect the impact load value applied to the guide portion 2 by the impact loading portion 4, which is equivalent to It is used to detect the impact load between the screw to be tested and the nut. In the process of loading the impact load, the impact load applied by the impact cylinder increases slowly from small to large, which is convenient and accurate for measuring the maximum impact resistance strength of the screw to be tested and the tightness of the screw riveting.

The second force sensor is installed on the side of the moving clamp close to the screw to be tested, and is mainly used to detect the pressure applied by the clamping part 3 to the side of the screw to be tested. During the process of clamping the screw to be tested, the clamping cylinder is slowly loaded until the second force sensor contacts the outer surface of the screw to be tested, and when the pressure applied by the clamping cylinder reaches the critical value of the bending strength of the screw to be tested, the loading is stopped , convenient and accurate measurement of the maximum bending strength of the screw to be tested.

Of course, in this specific embodiment, the maximum bending strength, maximum impact strength and screw riveting tightness of the screw to be tested can all be preset in advance. And when the impact loading driving device 42 of the impact loading part 4 reaches the preset value, the loading is stopped, indicating that the screw rod to be tested is qualified.

The present application also includes a loading and unloading part 6 installed on the test bracket 1 for loading and unloading the screw to be tested. In this specific embodiment, the loading and unloading part 6 includes a splint 61 , a support plate 62 , a pillar 63 and a loading and unloading driving device 64 .

Clamping plate 61 is two pieces of metal plates, and the opposite surface of two pieces of metal plates is all provided with the arc-shaped groove that is used to clamp the bottom of the screw rod to be tested, certainly, the surface of two arc-shaped grooves also can be set to increase friction rubber mat. The splint 61 is installed on the supporting plate 62, the supporting plate 62 is fixed on the bottom of the pillar 63, and the top of the pillar 63 is fixed on the lower surface of the supporting top plate 11, so that the supporting plate 63 plays a supporting role. The loading and unloading driving device 64 is specifically a small clamping impact cylinder, which is fixed on the lower surface of the support plate 63 , and its output end passes through the support plate 63 and is connected to the splint 61 . When the loading and unloading driving device 64 is started before the detection, the arc-shaped grooves of the two metal plates of the splint 61 are against the side of the screw to be tested to realize clamping; when the screw to be tested is separated from the clamping part 3 and the impact loading part 4 When connecting, the loading and unloading driving device 64 is started again, and the splint 61 drives the screw rod to be tested to move upward while clamping the screw rod to be tested, and the screw rod to be tested is lifted from the upper top plate 21 of the lead-out part 2 to facilitate unloading of the tested screw rod. screw. Of course, the structure of the attachment and detachment part 6 is not limited to this.

In addition, the present application also includes a display unit 7 and a control unit. Among them, the display part 7 is connected with the detection part 5, and is mainly used for collecting and displaying various loads on the screw rod to be tested in real time, so as to facilitate the operator to judge whether to continue loading. In this specific embodiment, the display part 7 is specifically installed on the A digital display push-pull force gauge for the upper surface of the supporting top plate 11 of the test bracket 1 . The control part is respectively connected with the detection part 5, the clamping part 3 and the impact loading part 4, and controls the action of the clamping part 3 and the impact loading part 4 according to the feedback information received from the detection part 5, so as to realize automation conveniently. The control part includes a control switch 8 mounted on the test stand 1 . When the control part judges that the load applied by the clamping part 3 and the impact loading part 4 is small, the air pump is started, and the air pump continues to inflate the clamping drive device 32 and the impact loading drive device 42 slowly, and the pressure gradually increases to realize loading; When it is judged that the load applied by the clamping part 3 and the impact loading part 4 reaches the preset value, the air pump stops running, and the air pump stops charging the clamping driving device 32 and the impact loading driving device 42 to complete the test.

In addition, a balance tester 9 is provided between the supporting side plate 13 of the test bracket 1 and the clamping drive device 32, which is used for the operator to judge whether the operation of the equipment is balanced during the testing process. The balance tester 9 adopts the form of a dial , which is convenient for operators to read and judge intuitively. In addition, an air pressure gauge 10 is also provided near each driving cylinder, which is convenient for the operator to judge the air pressure in each cylinder during the detection process. On the one hand, it is beneficial to ensure safety, and on the other hand, it is beneficial for the operator to judge the current output pressure value of each cylinder. Is it consistent with the value displayed on the display unit 7?

The operation process of the automatic full-check test equipment for the electric tailgate screw provided by the utility model is as follows:

Turn on the display part 7 and the control switch, and input the relevant preset value;

Fix the nut to be tested to the upper top plate 21 of the guide part 2;

Start the clamping drive device 32, the crank of the crank linkage mechanism 312 rotates, and drives the screw nut 311 to rotate, and the nut slide block of the screw nut 311 drives the movable clamp block connected thereto to approach the nut to be tested until the nut to be tested is clamped side of

Start the loading and unloading driving device 64, the splint 61 opens, and clamps the bottom side of the screw rod to be tested;

Start the detection part 5;

The clamping driving device 32 and the impact loading driving device 42 slowly load the side and the nut of the screw rod to be tested respectively;

Read the reading displayed on the display unit 7;

Until the screw rod to be tested begins to bend, stop the loading of the clamping drive device 32, and read the maximum bending strength value on the display part 7;

Until the screw to be tested is disengaged from the nut, stop the loading of the impact loading driving device 42, and read the maximum impact strength value and the screw riveting tightness value on the display part 7;

Close the clamping part 3, the impact loading part 4 and the detection part 5;

Start the loading and unloading driving device 64 again, the splint 61 moves up, and the screw rod to be tested is lifted from the guide part 2;

Take off the screw to be tested to complete a working cycle.

To sum up, the utility model provides an automatic full inspection test equipment for electric tailgate screws of automobiles, including a test bracket 1 , a guide part 2 , a clamping part 3 , an impact loading part 4 and a detection part 5 . The guide part 2 fixes the screw to be tested longitudinally. Since the clamping part 3 clamps the side of the screw to be tested, the screw to be tested does not move axially; at the same time, the detection part 5 is started to detect the load value applied by the clamping part 3 to the side of the screw to be tested, and the maximum bending resistance of the screw to be tested is determined strength. And because the impact loading part 4 jacks up the guide part 2 from the bottom of the guide part 2, when the impact load reaches a certain value, the guide part 2 moves upwards along the test bracket 1 relative to the screw rod to be tested, and the nut is jacked up, so that the nut is in contact with the test bracket 1. The screw to be tested is disengaged, and the maximum impact strength of the screw to be tested and the tightness of the screw riveting are measured. During the test, the clamping part 3 and the impact loading part 4 apply load to the screw to be tested at the same time, which is close to the actual force of the screw to be tested. The coupling measurement is used, and the measurement method is more reasonable. Therefore, the measured screw to be tested All performance parameters are more accurate.

The above is a detailed introduction to the automatic full detection and testing equipment for the electric tailgate screw provided by the utility model. In this paper, specific examples are used to illustrate the principle and implementation of the utility model. The description of the above examples is only used To help understand the method of the utility model and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the utility model, there will be changes in the specific implementation and scope of application. In summary, The contents of this specification should not be understood as limiting the utility model.

Claims (9)

1. An automatic full-check testing device for an electric tailgate screw rod of an automobile, comprising a test bracket, characterized in that it also includes: A guide part that passes through the top of the test support and can move longitudinally along the test support, and is used to longitudinally fix the screw to be tested on the top of the test support through a nut; A clamping part installed on the test bracket for clamping the screw rod to be tested; an impact loading part installed at the bottom of the guide part and used to jack up the guide part; A detecting part connected respectively with the clamping part and the impact loading part and used for detecting the load on the screw rod to be tested. 2. The automatic full-check test equipment for the electric tailgate screw rod of an automobile according to claim 1, wherein the guide part comprises: An upper top plate for supporting the screw to be tested; a lower base plate installed above the impact loading portion; A guide column arranged between the upper top plate and the lower bottom plate for guiding the loading direction of the impact loading part. 3. The automatic full inspection test equipment for the electric tailgate screw rod of an automobile according to claim 2, wherein the clamping part comprises: A moving clamp for clamping the screw to be tested; A transmission device connected to the movable clamp block and used to drive the movable clamp block to clamp or loosen the screw rod to be tested; A clamping driving device connected with the transmission device and used to drive the transmission device to move. 4. according to claim 3, is used for the automatic full inspection test equipment of automobile electric tailgate screw rod, is characterized in that, described transmission device comprises: a crank linkage connected to the clamping drive; Lead screw nuts that are respectively connected with the movable clamp block and the crank linkage mechanism. 5. The automatic full-check testing equipment for the electric tailgate screw rod of an automobile according to claim 4, wherein the impact loading part comprises: a top block located at the bottom of the lower floor and used to jack up the lower floor; An impact-loaded driving device connected with the top block and used to drive the top block to move longitudinally. 6. The automatic full inspection test equipment for the electric tailgate screw of an automobile according to claim 5, wherein the detection unit comprises: a first force sensor located between the lower base plate and the top block and installed on the bottom of the lower base plate for detecting the impact load value applied by the impact loading part; A second force sensor installed on the side of the movable clamping block close to the screw rod to be tested and used for detecting the applied pressure value of the clamping part. 7. According to any one of claims 1 to 6, the automatic full inspection test equipment for the screw rod of the electric tailgate of the automobile is characterized in that, it also includes a loading and unloading part installed on the test bracket for loading and unloading the screw rod to be tested . 8. The automatic full inspection and testing equipment for the electric tailgate screw of an automobile according to claim 7, wherein the loading and unloading part comprises: A splint for clamping the bottom of the screw to be tested; a support plate connected to the splint for supporting the splint; A pillar connected between the support plate and the test bracket for fixing the support plate; A loading and unloading driving device installed on the supporting plate and connected with the clamping plate for driving the clamping plate to open or close. 9. The automatic full-check testing equipment for the electric tailgate screw rod of an automobile according to claim 1, further comprising: A display unit connected to the detection unit for collecting and displaying the load on the screw to be tested; A control part that is respectively connected to the detection part, the clamping part and the impact loading part and used to control the action of the clamping part and the impact loading part according to the received feedback information from the detection part.