A measuring fixture for the inner panel of an automobile front fender

Abstract

The present invention discloses a measuring and inspection tool for the inner panel of an automobile front fender, which relates to the technical field of dynamic testing of parts. The present invention rotatably installs a turntable on the top of a shaft cylinder, and with the help of the connection between a first truss and a second truss, can drive the inner panel mounting platform to rotate at high speed. A staff member installs the inner panel of the automobile front fender to be inspected on the inner panel mounting platform, and with the help of multiple position sensors evenly distributed on a first airbag, collects data on the deformation amplitude of the inner panel of the automobile front fender during high-speed movement, so that the inner panel of the automobile front fender can be inspected under dynamic conditions. Compared with static inspection under conventional conditions, the dynamic inspection is more intuitive and efficient in analyzing the collected data, which is conducive to improving the inspection efficiency. In addition, the dynamic inspection is more in line with the actual application environment of the inner panel of the automobile front fender, so that the inspection result is more accurate, which is conducive to the optimized production of the product.

Description

Technical Field

[0001] The invention relates to the field of dynamic testing of parts and components, and in particular to a measuring fixture for an inner panel of a front fender of an automobile. Background Art

[0002] The inner front fender of a car is installed on the inside of the front fender, above the wheel. It is used to reduce the wind resistance coefficient of the car during driving and prevent water and mud from splashing into the chassis. It is an important part to ensure the long-term safe driving of the car.

[0003] During the design and production of automobile front fender inner panels, in order to ensure the product quality of the automobile front fender inner panels, it is usually necessary to inspect the automobile front fender inner panels after processing. Under normal circumstances, the inspection of automobile front fender inner panels is completed in a static state, and the thickness, deformation resistance and other data of the automobile front fender inner panels are inspected in a static environment. Although the quality of automobile front fender inner panels can be detected by building a model through static data analysis, there is still a certain degree of difference compared with the data under the dynamic operation of the automobile front fender inner panels in actual situations, and it is impossible to intuitively and clearly express the deformation of the automobile front fender inner panels due to vibration under actual working conditions, which affects the accuracy of automobile front fender inner panel quality inspection.

[0004] Therefore, a measuring fixture for the inner panel of a front fender of an automobile is proposed to solve some problems existing in the above-mentioned prior art. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the existing automobile front fender inner panel detection devices in the prior art that most of them can only perform static measurement of relevant data, and cannot intuitively and clearly test the amplitude of the vibration deformation of the automobile front fender inner panel under actual working conditions in a dynamic manner, resulting in inaccurate actual detection results and low detection efficiency. A measuring fixture for the automobile front fender inner panel is proposed.

[0006] In order to solve the problems existing in the prior art, the present invention adopts the following technical solutions:

[0007] A measuring and checking fixture for the inner panel of a front fender of an automobile comprises a base, a shaft cylinder being fixedly mounted at a top middle position of the base, a turntable coaxially arranged with the shaft cylinder being rotatably mounted on the top of the shaft cylinder, a first truss being mounted on the top of the turntable, a second truss extending to the outside of the turntable being fixedly mounted on the first truss, an inner panel mounting platform adapted to the inner panel of the front fender of the automobile being mounted on the outer end of the second truss, the inner panel of the front fender of the automobile being mounted on a side of the inner panel mounting platform close to the center position of the turntable, a socket corresponding to the mounting hole on the inner panel of the front fender of the automobile being provided on the inner panel mounting platform, a latch being inserted in the socket, a locking piece being mounted on a side of the inner panel mounting platform away from the latch, a first servo motor being fixedly mounted on the base, a baffle being fixedly mounted in the inner panel mounting platform, and a first airbag adapted to the inner panel of the front fender of the automobile being fixedly mounted on the side of the baffle close to the center position of the turntable, and a plurality of evenly distributed position sensors being fixedly mounted on the outer end wall of the first airbag.

[0008] Preferably, an annular enclosure coaxially arranged with the shaft cylinder is fixedly installed on the top of the base, and a slot is provided on the annular enclosure, in which an arc-shaped movable door adapted to the annular enclosure is rotatably installed.

[0009] Preferably, the latch is arranged in a T-shaped structure, and annular grooves arranged at equal distances are provided on the cylindrical surface of the latch. The locking member includes a cylinder fixedly connected to the inner plate mounting platform, and an electromagnet is fixedly embedded in the end of the cylinder away from the socket, and a receiving groove inclined toward the electromagnet is provided on the inner end wall of the cylinder, and a card block is slidably installed in the receiving groove.

[0010] Preferably, an outer gear ring coaxially arranged therewith is fixed around the outer side of the turntable, and a gear meshing with the outer gear ring is fixedly mounted on the driving shaft of the first servo motor.

[0011] Preferably, a second airbag is installed on the side of the baffle away from the first airbag and is arranged on the inner side of the inner plate mounting platform, and a connecting pipe is fixedly connected between the second airbag and the first airbag, and an airflow sensor is fixedly installed in the connecting pipe.

[0012] Preferably, the side of the inner panel mounting platform away from the center of the turntable is set to a simulation structure similar to the front guard plate and front fender of a car, and the side of the inner panel mounting platform close to the center of the turntable is provided with a simulation wheel.

[0013] Preferably, a screw is rotatably installed in the second truss, a slide is slidably installed in the second truss, and the slide is threadedly connected to the screw, a second servo motor is fixedly installed on the first truss, and the drive shaft of the second servo motor is transmission-connected to the screw.

[0014] Preferably, the top of the turntable is provided with a slide groove located on its diameter, the first truss is slidably installed in the slide groove, the base is fixedly provided with a shaft rod vertically arranged at the center position of the shaft cylinder, and the top of the shaft rod is fixedly provided with a ratchet arranged in the first truss, and the bottom of the first truss is provided with a through groove, and the shaft rod is movably inserted in the through groove, a roller is rotatably installed on the side of the first truss close to the inner plate mounting platform, the second truss is slidably connected to the side of the inner end wall of the annular enclosure, and a roller is rotatably installed on the side of the slide close to the inner end wall of the annular enclosure, and a spring is fixedly connected between the slide and the first truss, and between the slide and the second truss, and the spring is in a compressed state.

[0015] Preferably, a bracket is fixedly connected to the outer side of the inner plate mounting platform, and a nozzle corresponding to the simulation structure on the outer side of the inner plate mounting platform is fixedly installed on the bracket, and an air pump is fixedly installed below the base.

[0016] Preferably, a vertically arranged air flow channel is opened in the shaft rod, and an adapter cover that is movably mounted on the outside of the shaft rod is fixedly installed at the bottom of the turntable. A through hole located in the adapter cover is opened on the outer end wall of the shaft rod, and the through hole is connected to the air flow channel, and the lower end of the air flow channel is connected to the air pump.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the present invention, by rotatably mounting a turntable on the top of the shaft cylinder, the inner panel mounting platform can be driven to rotate at high speed by connecting the first truss and the second truss. A worker then mounts the inner panel of the front fender of the automobile to be inspected on the inner panel mounting platform. Using multiple position sensors evenly distributed on the first airbag, data on the deformation amplitude of the inner panel of the front fender of the automobile during high-speed movement is collected. This allows for dynamic inspection of the inner panel of the front fender of the automobile. Compared to conventional static inspection, dynamic inspection allows for more intuitive and efficient analysis of collected data, which is conducive to improving inspection efficiency. Furthermore, dynamic inspection is more consistent with the actual application environment of the inner panel of the front fender of the automobile, resulting in more accurate inspection results and facilitating optimized production of the product.

[0019] 2. In the present invention, by configuring the latch in a T-shaped structure and inserting the latch into the socket, the magnetic attraction of the electromagnet in the locking member after being energized changes the position of the latch block, thereby achieving rapid locking and unlocking of the latch. This is beneficial for improving the efficiency of disassembly and assembly of automobile front fender inner panels in a simulation of the actual installation environment of automobile front fender inner panels, thereby improving the efficiency of the device in detecting automobile front fender inner panels to a certain extent.

[0020] 3. In the present invention, a second airbag is fixedly connected to the outside of the first airbag via a connecting tube. With the baffle plate in place, when the inner fender panel vibrates and squeezes the first airbag, causing it to deform, airflow is driven back and forth between the first and second airbags. An airflow sensor is fixedly mounted within the connecting tube to record the direction, volume, and velocity of the airflow in the connecting tube, thereby reflecting the overall deformation of the inner fender panel. Multiple data analyses are conducted to further improve the accuracy of detection and analysis of the inner fender panel.

[0021] 4. In the present invention, by configuring the outer side of the inner panel mounting platform to simulate a real car's front fender and front panel, coupled with the provision of simulated wheels and airflow from the nozzle, the airflow factor encountered by the actual front fender inner panel in use can be incorporated into the deformation test, which helps further improve the accuracy of the device's simulation and detection of the degree of deformation of the front fender inner panel in a dynamic environment.

[0022] 5. In the present invention, the first truss is slidably installed in the slide groove, and with the help of the elastic support of the spring, the roller is tightly attached to the outside of the ratchet, and the roller rotatably installed at the outer end of the slide is tightly attached to the inner end wall of the annular enclosure. In conjunction with the high-speed rotation of the turntable, the inner plate mounting platform is cyclically moved toward and away from the center of the turntable during high-speed movement, forming high-frequency vibration, simulating the working environment of the inner plate of the front fender of a car when the car is driving on an extremely bumpy road. This is beneficial for the device to detect the deformation amplitude of the inner plate of the front fender of a car in an extreme operating environment, and to a certain extent improves the comprehensiveness of the device in actual detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0024] Figure 1 A perspective view of the present invention;

[0025] Figure 2 is a cutaway view of the present invention;

[0026] Figure 3 A perspective view of the structure on the turntable of the present invention;

[0027] Figure 4 A perspective view of the inner panel mounting platform of the present invention;

[0028] Figure 5 is a perspective view of the ratchet of the present invention;

[0029] Figure 6 A top view of the present invention;

[0030] Figure 7 For the present invention Figure 6 Cross-section at AA in the middle;

[0031] Figure 8 For the present invention Figure 6 Cross-section at the middle BB;

[0032] Figure 9 For the present invention Figure 8 Enlarged view of point C in the middle;

[0033] Figure 10 It is a right side view of the present invention;

[0034] Figure 11 For the present invention Figure 10 Cross-section at the middle DD;

[0035] Figure 12 For the present invention Figure 10 Cross-sectional view at EE.

[0036] Serial number in the picture:

[0037] 1. Base; 101. Shaft cylinder; 102. Annular enclosure; 103. Arc-shaped movable door;

[0038] 2. Turntable; 201. First truss; 202. Second truss; 203. Inner plate mounting platform; 204. Jack; 205. Latch; 206. Locking member; 2061. Cylinder; 2062. Electromagnet; 2063. Storage slot; 2064. Block; 207. External gear ring; 208. First servo motor; 209. Gear;

[0039] 3. Baffle; 301. First airbag; 302. Position sensor; 303. Second airbag; 304. Connecting pipe; 305. Airflow sensor;

[0040] 4. Simulated wheel; 401. Screw; 402. Slide; 403. Second servo motor;

[0041] 5. Slide; 501. Shaft; 502. Ratchet; 503. Roller; 504. Slide; 505. Roller; 506. Spring;

[0042] 6. Bracket; 601. Nozzle; 602. Air flow channel; 603. Adapter cover; 604. Through hole; 605. Air pump. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0044] Example: This example provides a measuring fixture for the inner panel of a front fender of an automobile. Figure 1 - Figure 12 Specifically, it includes a base 1, a shaft cylinder 101 is fixedly installed at the middle position of the top of the base 1, a turntable 2 coaxially arranged with the shaft cylinder 101 is rotatably installed on the top of the shaft cylinder 101, and a first truss 201 is installed on the top of the turntable 2, and a second truss 202 extending to the outside of the turntable 2 is fixedly installed on the first truss 201, and an inner panel mounting platform 203 adapted to the inner panel of the front fender of the automobile is installed on the outer end of the second truss 202, and the inner panel of the front fender of the automobile is mounted on the side of the inner panel mounting platform 203 close to the center of the turntable 2, and a socket 204 corresponding to the mounting hole on the inner panel of the front fender of the automobile is opened on the inner panel mounting platform 203. 04 is plugged with a latch 205, and a locking piece 206 is installed on the side of the inner plate mounting platform 203 away from the latch 205. An outer gear ring 207 coaxially arranged therewith is fixed around the outer side of the turntable 2, and a first servo motor 208 is fixedly mounted on the base 1. A gear 209 meshing with the outer gear ring 207 is fixedly mounted on the drive shaft of the first servo motor 208, and a baffle 3 is fixedly mounted in the inner plate mounting platform 203, and a first airbag 301 adapted to the inner panel of the front fender of the automobile is fixedly mounted on the side of the baffle 3 close to the center of the turntable 2, and a plurality of evenly distributed position sensors 302 are fixedly mounted on the outer end wall of the first airbag 301.

[0045] When the device is in use, the staff connects the device to an external power supply so that the external power supply provides power support for the device. The staff installs the inner panel of the front fender of the car to be tested on the inner panel mounting platform 203. A mounting position adapted to the inner panel of the front fender of the car is provided on one side of the inner panel mounting platform 203 close to the center of the turntable 2. The staff installs the inner panel of the front fender of the car in the corresponding mounting position on the inner panel mounting platform 203. The pin 205 passes through the mounting hole on the inner panel of the front fender of the car, and then is inserted into the socket 204 and locked by the locking piece 206 on the other side, ensuring the connection stability of the inner panel of the front fender of the car after installation. The state of the inner panel of the front fender of the car installed on the inner panel mounting platform 203 is consistent with the state in which it is actually installed on the car. The first airbag 301 is filled with gas. When the inner panel of the front fender of the car is installed on the inner panel mounting platform 203, the first airbag 301 fits tightly against one side of the inner panel of the front fender of the car.

[0046] During the actual test, the first servo motor 208 is powered on and started, driving the gear 209 fixedly mounted on its drive shaft to rotate. With the meshing of the gear 209 and the outer gear ring 207, the turntable 2 is driven to rotate. Under the connection of the first truss 201 and the second truss 202, the turntable 2 will drive the inner panel mounting platform 203 to rotate synchronously during its rotation. During the rotation of the inner panel mounting platform 203, the inner panel of the front fender of the automobile installed thereon will be driven to move at high speed, simulating the moving state of the inner panel of the front fender of the automobile when it is actually used on the automobile. During the high-speed movement of the inner panel of the front fender of the automobile, vibration will occur. Under the action of the vibration, it will be deformed to a certain extent. Since the first airbag 301 is in contact with the inner panel of the front fender of the automobile, the inner panel of the front fender of the automobile will be deformed to a certain extent. One side of the plate fits tightly, which makes the deformation of the inner panel of the front fender of the car due to movement and vibration act on the first airbag 301. At this time, the position sensor 302 evenly distributed on the first airbag 301 detects the degree of deformation by changing its position, and the relevant data is transmitted to the processing device associated with the device to construct a deformation model of the inner panel of the front fender of the car in a moving state, so as to realize the detection of the inner panel of the front fender of the car. If the deformation amplitude exceeds the specified range during the movement detection of the inner panel of the front fender of the car, it indicates that it is non-compliant. Compared with static detection under conventional circumstances, dynamic detection is more in line with the actual application environment of the inner panel of the front fender of the car, and the detection result is more accurate, which is conducive to the optimized production of the product.

[0047] In the specific implementation process, Figure 1 As shown, an annular enclosure 102 coaxially arranged with the shaft cylinder 101 is fixedly installed on the top of the base 1, and a slot is provided on the annular enclosure 102, and an arc-shaped movable door 103 adapted to the annular enclosure 102 is rotatably installed in the slot. By surrounding and fixing the annular enclosure 102 on the top of the base 1, the movable parts on the top of the base 1 can be protected during the use of the device, forming a relatively safe test area, which is conducive to avoiding accidental contact with internal movable parts and causing injury to personnel, and to a certain extent improves the safety of the actual use of the device. At the same time, by installing the rotatable arc-shaped movable door 103 in the slot provided on the annular enclosure 102, the opening of the arc-shaped movable door 103 can facilitate the disassembly and assembly of the inner panel of the front fender of the car to be tested by the staff, which is conducive to ensuring the convenience of the actual operation of the device.

[0048] In the specific implementation process, Figure 9As shown, the latch 205 is configured as a T-shaped structure, and annular grooves arranged at equal distances are provided on the cylindrical surface of the latch 205. The locking member 206 includes a cylinder 2061 fixedly connected to the inner panel mounting platform 203, and an electromagnet 2062 is fixedly embedded in the end of the cylinder 2061 away from the socket 204. A receiving groove 2063 inclined toward the electromagnet 2062 is provided on the inner end wall of the cylinder 2061, and a clamping block 2064 is slidably installed in the receiving groove 2063. When the device is in use, a slender section on the latch 205 is adapted to the inner diameter of the socket 204, and the annular grooves are evenly provided on the slender section of the latch 205. The staff can quickly disassemble and assemble the inner panel of the front fender of the car through the latch 205.

[0049] When the staff installs the inner panel of the front fender of the automobile on the inner panel mounting platform 203 and needs to fix it, the staff inserts the slender section of the pin 205 into the socket 204 through the mounting hole on the inner panel of the front fender of the automobile. At this time, the electromagnet 2062 installed in the cylinder 2061 is energized to generate magnetic attraction to the block 2064. The block 2064 moves toward the electromagnet 2062 and penetrates into the interior of the cylinder 2061 from the receiving groove 2063. After the slender section of the pin 205 passes through the socket 204 and is inserted into the interior of the cylinder 2061, the block 2064 will be engaged in the annular groove provided on the pin 205 after probing into the interior of the cylinder 2061, thereby limiting the position of the pin 205 and realizing quick and stable installation of the inner panel of the front fender of the automobile.

[0050] After the test is completed, the staff switches the magnetic field direction of the electromagnet 2062, so that the electromagnet 2062 generates a magnetic repulsive force on the card block 2064. With the help of the magnetic repulsive force, the card block 2064 is driven to slide and retract into the storage groove 2063. The card block 2064 withdraws from the cylinder 2061 and no longer engages with the annular groove on the pin 205. At this time, the staff can quickly pull out the pin 205 and quickly disassemble the inner panel of the front fender of the tested car, which can effectively improve the convenience and efficiency of the device during detection and use.

[0051] In the specific implementation process, Figure 9As shown, a second airbag 303 arranged on the inner side of the inner panel mounting platform 203 is installed on the side of the baffle 3 away from the first airbag 301, and a connecting pipe 304 is fixedly connected between the second airbag 303 and the first airbag 301, and an airflow sensor 305 is fixedly installed in the connecting pipe 304. When the device is used to test the inner panel of the front fender of an automobile in a moving state, the first airbag 301 is squeezed due to the vibration and deformation of the inner panel of the front fender of the automobile. Under the squeezing effect and the connection with the connecting pipe 304, the gas in the first airbag 301 will flow into the second airbag 303 through the connection of the connecting pipe 304. After the squeezing force disappears, the second airbag 305 is The gas filled in the bag 303 will flow back to the first airbag 301 through the connection of the connecting pipe 304. Therefore, during detection, when the inner panel of the front fender of the automobile vibrates due to movement, the gas in the first airbag 301 and the second airbag 303 will flow back and forth due to vibration and compression. During this process, the airflow sensor 305 installed in the connecting pipe 304 records the flow direction, flow volume and flow speed of the airflow in the connecting pipe 304. After the relevant data is analyzed and processed, the state of gas flow can be used to assist in constructing an overall deformation model of the inner panel of the front fender of the automobile, which is conducive to further improving the accuracy of the detection and analysis of the inner panel of the front fender of the automobile.

[0052] In the specific implementation process, Figure 3 、 Figure 6 and Figure 8 As shown, the side of the inner plate mounting platform 203 away from the center of the turntable 2 is set to a simulation structure similar to the front guard plate and the front fender of the car, and the side of the inner plate mounting platform 203 close to the center of the turntable 2 is provided with a simulation wheel 4, a screw 401 is rotatably installed in the second truss 202, a slide 402 is slidably installed in the second truss 202, and the slide 402 is threadedly connected to the screw 401, a second servo motor 403 is fixedly installed on the first truss 201, and the drive shaft of the second servo motor 403 is transmission-connected to the screw 401. When the device is used, due to the outer side of the inner plate mounting platform 203, A simulation structure is set to imitate the front guard plate and front fender of a real car, and the simulation wheel 4 is installed on the side of the inner panel mounting platform 203 close to the center of the turntable 2. This makes the detection device more in line with the actual installation and use environment of the front fender inner panel of the car. When the inner panel mounting platform 203 drives the front fender inner panel of the car to move at high speed for deformation testing, with the help of the relative airflow formed during the movement, the airflow factor faced by the front fender inner panel of the car during actual use can be added to the deformation test, which is conducive to further improving the accuracy of the device in simulating and detecting the degree of deformation of the front fender inner panel of the car under a dynamic environment.

[0053] During use, in order to avoid the presence of the simulated wheel 4 affecting the disassembly and assembly of the inner panel of the front fender of the car, the simulated wheel 4 is set as a movable and adjustable structure. When the position of the simulated wheel 4 needs to be moved, the staff controls the second servo motor 403 to be powered on and started, driving the screw 401 connected to its drive shaft to rotate, and with the help of the threaded engagement between the screw 401 and the slide 402, the slide 402 is driven to move along the second truss 202, thereby controlling the simulated wheel 4 to move along the second truss 202, and flexibly adjusting the position of the simulated wheel 4 according to actual operation requirements, which improves the convenience of the device in actual use to a certain extent.

[0054] In the specific implementation process, Figure 3 and Figure 8 As shown, the top of the turntable 2 is provided with a slide groove 5 located on its diameter, and the first truss 201 is slidably installed in the slide groove 5, and a shaft rod 501 vertically arranged at the center position of the shaft cylinder 101 is fixedly installed on the base 1, and the top of the shaft rod 501 is fixedly installed with a ratchet 502 arranged in the first truss 201, and a through groove is provided at the bottom of the first truss 201, and the shaft rod 501 is movably inserted in the through groove, and a roller 503 is rotatably installed on the side of the first truss 201 close to the inner plate mounting platform 203, and a slide 504 is slidably connected to the side of the second truss 202 close to the inner end wall of the annular enclosure 102, and a roller 505 is rotatably installed on the side of the slide 504 close to the inner end wall of the annular enclosure 102, and a spring 506 is fixedly connected between the slide 504 and the first truss 201, and between the slide 504 and the second truss 202, and the spring 506 is in a compressed state.

[0055] When the device is used, it can actively increase the vibration amplitude of the inner panel of the front fender of the car. The first truss 201 in the device is slidably installed in the slide groove 5 set on the top of the turntable 2, so that the first truss 201 can slide back and forth along the diameter of the turntable 2. With the elastic support of the spring 506, the roller 505 is tightly fitted on the inner end wall of the annular enclosure 102, and the roller 503 rotatably installed in the first truss 201 is tightly fitted on the outer side of the ratchet 502. Since the roller 503 is fixedly connected to the base 1 through the shaft 501, this makes When the turntable 2 drives the first truss 201 to rotate, the first truss 201 and the ratchet 502 rotate relative to each other, and the first truss 201 drives the roller 503 rotatably installed inside it to roll along the outer side of the ratchet 502. Since the outer side of the ratchet 502 is surrounded by a plurality of evenly distributed bevel teeth, under the guidance of these bevel teeth, the distance between the baffle 3 and the center of the ratchet 502 continues to move away, and then suddenly retracts. The high-speed rotation simulates the shaking state of a vehicle driving on a bumpy road, and can detect the deformation state of the inner panel of the front fender of a car under extreme operating conditions.

[0056] In the specific implementation process, Figure 1 and Figure 7 As shown, the outer side of the inner plate mounting platform 203 is fixedly connected with a bracket 6, and a nozzle 601 corresponding to the simulation structure on the outer side of the inner plate mounting platform 203 is fixedly installed on the bracket 6, an air pump 605 is fixedly installed below the base 1, a vertical air flow channel 602 is provided in the shaft 501, and an adapter cover 603 movably sleeved on the outer side of the shaft 501 is fixedly installed at the bottom of the turntable 2, a through hole 604 located in the adapter cover 603 is provided on the outer end wall of the shaft 501, and the through hole 604 is connected to the air flow channel 602, and the lower end of the air flow channel 602 is connected to the air pump 605. When the device is used, it is installed at the bottom of the base 1 The air pump 605 is powered on and started to blow air. The high-speed airflow flows from bottom to top in the airflow channel 602 and enters the adapter cover 603 through the through hole 604. The nozzle 601 and the adapter cover 603 are connected by a pipe. The airflow in the adapter cover 603 enters the nozzle 601 through the pipe, and is blown out from the nozzle 601 to the outside of the inner panel mounting platform 203. By actively adding high-speed airflow, the wind resistance faced by the car during driving is simulated, making the device more realistic in dynamic detection of the inner panel of the front fender of the car, and to a certain extent improving the accuracy of the data collected during actual testing.

[0057] By coaxially fixing the adapter cover 603 at the bottom of the turntable 2, the adapter cover 603 can be driven to rotate synchronously around the shaft 501 during the rotation of the turntable 2. With the help of the connectivity of the through hole 604, the airflow provided by the air pump 605 can stably enter the adapter cover 603 from the airflow channel 602 during the rotation of the turntable 2, which is beneficial to ensure the stability of airflow delivery during dynamic detection.

[0058] Specifically, the working principle and operation method of the present invention are as follows:

[0059] The staff flips the curved movable door 103 outward to open it, passes over the slot opened on the annular enclosure 102 and fits the front fender inner panel of the car to be tested to the corresponding position on the inner panel mounting platform 203. Then, the staff passes the latch 205 through the mounting hole opened on the front fender inner panel of the car, inserts it into the socket 204, and locks it through the locking piece 206 to realize the simulated installation of the front fender inner panel of the car. Then, the staff closes the curved movable door 103 and starts the first servo motor 208. The drive of the first servo motor 208 After the driving shaft rotates, it drives the gear 209 to rotate. With the meshing of the gear 209 and the outer gear ring 207, the turntable 2 is driven to rotate. Under the connection of the first truss 201 and the second truss 202, the inner plate mounting platform 203 is driven to rotate at high speed within the range of the annular enclosure 102. During the rotation of the turntable 2, the slide 504 slidably connected to the outer end of the second truss 202 is driven to rotate. Under the elastic support of the spring 506, the roller 505 rolls along the inner end wall of the annular enclosure 102, and the roller 503 is tightly fitted with the outer side of the ratchet 502. Guided by the helical teeth surrounding the outer side of the ratchet wheel 502, the inner panel mounting platform 203 cyclically approaches and moves away from the center of the turntable 2 during high-speed movement, generating high-frequency vibrations that simulate the working environment of the inner front fender panel when the car is traveling on an extremely bumpy road. Simultaneously, the air pump 605 is powered on and activated, and through the nozzle 601, air is blown toward the inner panel mounting platform 203 to simulate wind resistance during vehicle driving, providing a simulated dynamic environment for testing the inner front fender panel. The vibrations generated by the dynamic operation of the inner front fender panel cause it to deform accordingly. These deformations drive the numerous position sensors 302 evenly distributed on the first airbag 301 to continuously change position. The position sensors 302 collect deformation data of the inner front fender panel under dynamic conditions, and the airflow sensor 305 collects the back-and-forth flow of air between the first airbag 301 and the second airbag 303. Data analysis is performed on the overall deformation curve of the inner front fender panel, achieving accurate and comprehensive collection of deformation data of the inner front fender panel during dynamic testing.

[0060] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A measuring fixture for the inner panel of a front fender of an automobile, comprising a base (1), characterized in that: A shaft cylinder (101) is fixedly installed at the middle position of the top of the base (1), a turntable (2) coaxially arranged with the shaft cylinder (101) is rotatably installed on the top of the shaft cylinder (101), a first truss (201) is installed on the top of the turntable (2), and a second truss (202) extending to the outside of the turntable (2) is fixedly installed on the first truss (201), an inner panel mounting platform (203) adapted to the inner panel of the front fender of the automobile is installed on the outer end of the second truss (202), the inner panel of the front fender of the automobile is installed on the side of the inner panel mounting platform (203) close to the center position of the turntable (2), and the inner panel mounting platform (203) is provided with a A socket (204) is provided corresponding to a mounting hole on an inner panel of a front fender of an automobile, a latch (205) is inserted into the socket (204), a locking member (206) is installed on a side of the inner panel mounting platform (203) away from the latch (205), a first servo motor (208) is fixedly installed on the base (1), a baffle (3) is fixedly installed in the inner panel mounting platform (203), and a first air bag (301) adapted to the inner panel of the front fender of the automobile is fixedly installed on a side of the baffle (3) close to the center of the turntable (2), and a plurality of evenly distributed position sensors (302) are fixedly installed on the outer end wall of the first air bag (301).

2. The automobile front fender inner panel measuring fixture according to claim 1, characterized in that: An annular enclosure (102) coaxially arranged with the shaft cylinder (101) is fixedly mounted on the top of the base (1), and a slot is provided on the annular enclosure (102), in which an arc-shaped movable door (103) adapted to the annular enclosure (102) is rotatably mounted.

3. The automobile front fender inner panel measuring fixture according to claim 1, characterized in that: The latch (205) is configured as a T-shaped structure, and an equidistantly arranged annular grooves are provided on the cylindrical surface of the latch (205). The locking member (206) comprises a cylinder (2061) fixedly connected to the inner plate mounting platform (203), and an electromagnet (2062) is fixedly embedded in one end of the cylinder (2061) away from the insertion hole (204). A receiving groove (2063) inclined toward the electromagnet (2062) is provided on the inner end wall of the cylinder (2061), and a clamping block (2064) is slidably installed in the receiving groove (2063).

4. The automobile front fender inner panel measuring fixture according to claim 1, characterized in that: An outer gear ring (207) coaxially arranged therewith is fixedly mounted around the outer side of the turntable (2), and a gear (209) meshing with the outer gear ring (207) is fixedly mounted on the drive shaft of the first servo motor (208).

5. The automobile front fender inner panel measuring fixture according to claim 1, characterized in that: A second airbag (303) arranged on the inner side of the inner plate mounting platform (203) is installed on a side of the baffle (3) away from the first airbag (301), and a connecting pipe (304) is fixedly connected between the second airbag (303) and the first airbag (301), and an airflow sensor (305) is fixedly installed in the connecting pipe (304).

6. The automobile front fender inner panel measuring fixture according to claim 2, characterized in that: The side of the inner panel mounting platform (203) away from the center of the turntable (2) is configured as a simulation structure similar to a front guard plate and a front fender of an automobile, and the side of the inner panel mounting platform (203) close to the center of the turntable (2) is provided with a simulation wheel (4).

7. The automobile front fender inner panel measuring fixture according to claim 6, characterized in that: A screw rod (401) is rotatably mounted in the second truss (202), a slide (402) is slidably mounted in the second truss (202), and the slide (402) is threadedly connected to the screw rod (401), a second servo motor (403) is fixedly mounted on the first truss (201), and a drive shaft of the second servo motor (403) is transmission-connected to the screw rod (401).

8. The automobile front fender inner panel measuring fixture according to claim 6, characterized in that: The top of the turntable (2) is provided with a slide groove (5) located on the diameter thereof, the first truss (201) is slidably mounted in the slide groove (5), the base (1) is fixedly provided with a shaft rod (501) vertically arranged at the center position of the shaft cylinder (101), and the top of the shaft rod (501) is fixedly provided with a ratchet (502) arranged in the first truss (201), the bottom of the first truss (201) is provided with a through groove, the shaft rod (501) is movably inserted in the through groove, and the first truss (201) is close to the shaft rod (501). A roller (503) is rotatably mounted on one side of the inner plate mounting platform (203), a slide (504) is slidably connected to the side of the second truss (202) close to the inner end wall of the annular enclosure (102), and a roller (505) is rotatably mounted on the side of the slide (504) close to the inner end wall of the annular enclosure (102), and a spring (506) is fixedly connected between the slide (504) and the first truss (201), and between the slide (504) and the second truss (202), and the spring (506) is in a compressed state.

9. The automobile front fender inner panel measuring fixture according to claim 8, characterized in that: The outer side of the inner plate mounting platform (203) is fixedly connected to a bracket (6), and a nozzle (601) corresponding to the simulated structure on the outer side of the inner plate mounting platform (203) is fixedly mounted on the bracket (6), and an air pump (605) is fixedly mounted below the base (1).

10. The automobile front fender inner panel measuring fixture according to claim 9, characterized in that: A vertically arranged air flow channel (602) is provided in the shaft (501), and a transfer cover (603) movably sleeved on the outside of the shaft (501) is fixedly installed on the bottom of the turntable (2). A through hole (604) located in the transfer cover (603) is provided on the outer end wall of the shaft (501), and the through hole (604) is communicated with the air flow channel (602), and the lower end of the air flow channel (602) is communicated with the air pump (605).

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