A thickness detection device for a car navigation screen

Abstract

The present invention relates to a thickness detection device for a vehicle-mounted navigator screen, comprising a suction bottom plate, four correction devices and four thickness measuring devices, wherein the four correction devices are evenly mounted on the suction bottom plate, and a thickness measuring device is mounted on the upper end of each correction device. The present invention can solve the problems that when measuring the thickness of the existing navigator screen, personnel often perform single-point measurement on the screen, resulting in an error between the measurement result and the actual thickness, and the existing measuring instrument may deviate from the position after long-term use, reducing the measurement accuracy, and when measuring, because the screen is fixed on the instrument, personnel can only read the data at a long distance, etc., and can realize the functions of measuring the thickness of the vehicle-mounted navigator screen and correcting the thickness measuring device.

Description

Technical Field

[0001] The invention relates to the field of vehicle-mounted navigators, and in particular to a thickness detection device for a vehicle-mounted navigator screen. Background Art

[0002] A car navigation system is a driving assistance device that can help users accurately locate their current location, calculate the itinerary based on the established destination, and guide the user to the destination through map display and voice prompts. The car navigation system is mainly composed of chips, antennas, processors, memory, and screens. The thickness of the screen needs to be measured during assembly, and assembly can only be carried out when the thickness meets the standard. When measuring the thickness of the existing navigation system screen, personnel often perform single-point measurement of the screen, resulting in an error between the measurement result and the actual thickness. In addition, the existing measuring instruments may deviate from the position after long-term use, which reduces the measurement accuracy. Moreover, during measurement, since the screen is fixed on the instrument, personnel can only read the data at a long distance. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a thickness detection device for the screen of a vehicle-mounted navigation system, which can solve the problems that when measuring the thickness of the existing navigation system screen, personnel often perform single-point measurement on the screen, resulting in an error between the measurement result and the actual thickness, and the existing measuring instrument may deviate from the position after long-term use, reducing the measurement accuracy, and when measuring, since the screen is fixed on the instrument, personnel can only read the data at a long distance. The device can realize the functions of measuring the thickness of the vehicle-mounted navigation system screen and correcting the thickness measuring device, measure the screen thickness at multiple points, reduce the measurement error, correct the thickness measuring device that has been used for a long time, and improve the measurement accuracy. Personnel can read the measured data at close range and carefully, and the operation is simple.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a thickness detection device for a vehicle-mounted navigation system screen, comprising a suction base plate, four correction devices and four thickness measuring devices, wherein the four correction devices are evenly installed on the suction base plate, and a thickness measuring device is installed on the upper end of each correction device.

[0005] The suction base plate includes a supporting plate, two angle plates, a suction cup, a connecting spring, a top plate and a top cylinder. The two angle plates are installed on the supporting plate through a pin shaft. The suction cups are symmetrically arranged on the angle plates. A connecting spring is connected between the two angle plates. A top cylinder is installed on the right side of the rear end of the supporting plate. The top end of the top cylinder is installed on the top plate. During specific operation, the suction base plate sucks the lower end surface of the navigator screen, and the operation is simple.

[0006] The correction device comprises a push cylinder, a pulley, a main frame, a lighting mechanism and a fine-tuning mechanism. The push cylinder is installed on a supporting plate, the top end of the push cylinder is installed on the main frame, the lower end of the main frame is provided with a detection groove, the upper end of the main frame is provided with an empty groove, the lower end of the main frame is provided with a pulley, the detection groove is provided with a lighting mechanism, and the outer end upper side of the main frame is provided with a fine-tuning mechanism. During specific operation, the lighting mechanism and the fine-tuning mechanism cooperate to calibrate the thickness measuring device to ensure that the thickness measuring device accurately measures the thickness, the push cylinder drives the main frame to move to a suitable position so that the main frame can support the lower end surface of the navigator screen, and the correction device calibrates the thickness measuring device that has been used for a long time, thereby improving the measurement accuracy and being easy to operate.

[0007] The thickness measuring device comprises a main cylinder, a fixed outer frame, a lifting slide column, an operating spring, a limit lower block, a slide block, a slide groove, a measuring mechanism, a stop cylinder, a stop plate and a stop block.

[0008] The master cylinder is installed on the fine-tuning mechanism, the top of the master cylinder is installed on the fixed outer frame, a sliding groove is set at the left end of the fixed outer frame, a sliding groove is installed on the inner wall of the fixed outer frame, the sliding groove is connected to the slider by sliding fit, the slider is installed on the outer wall of the lifting slide column, an operating spring is connected between the lifting slide column and the fixed outer frame, a measuring mechanism is installed at the left end of the fixed outer frame, and a limited lower block is installed at the lower end of the inner wall of the fixed outer frame.

[0009] The right end of the fixed outer frame is equipped with an air cylinder, the top end of the air cylinder is equipped with an air plate, and the right end of the lifting slide column is equipped with an air block, which corresponds to the air plate.

[0010] During specific operation, after the navigator screen is supported and sucked, the main cylinder drives the lifting slide to move inward, and the lifting slide rises according to the thickness of the navigator screen. Since the rising height of the lifting slide is equal to the thickness of the screen, the measuring mechanism measures the rising height of the lifting slide, and the abutting cylinder, abutting plate and abutting block cooperate with the auxiliary thickness measuring device for correction processing. The four thickness measuring devices perform multi-point detection on the thickness of the navigator screen, reducing the possibility of measurement errors, and the measuring ruler can be pulled out for close-range reading, which is convenient for personnel to read the measurement and simple to operate.

[0011] As a preferred technical solution of the present invention, the measuring mechanism includes a sleeve frame, a clamping frame, a clamping cylinder, a clamping column, a measuring ruler, a measuring line plate, a sliding rod, a telescopic cylinder, a clamping frame, a clamping plate and a clamping cylinder.

[0012] The sleeve frame is installed at the left end of the fixed outer frame, the sleeve frame is provided with a socket, the socket is sleeved with a clamping column, a clamping cylinder is installed on the fixed outer frame, the clamping cylinder is located below the sleeve frame, the top of the clamping cylinder is installed on the clamping frame, and the upper end of the clamping column is installed at the lower end of the measuring ruler.

[0013] The measuring ruler is connected to the left end of the measuring line plate by a sliding fit, the right end of the measuring line plate is located in the sliding groove, a sliding rod is installed on the measuring line plate, the sliding rod is connected to the measuring ruler by a sliding fit, a telescopic cylinder is installed at the rear end of the measuring line plate, the top of the telescopic cylinder is installed on the clamping frame, a clamping cylinder is installed on the side wall of the clamping frame, and the top of the clamping cylinder is installed on the clamping plate.

[0014] During specific work, the lifting slide column lifts up the measuring line board. When the measuring line board stops rising, the clamp frame and the clamp plate clamp the measuring ruler to ensure that the measuring line board remains motionless. When the personnel need to read the thickness carefully, the clamp frame moves away from the clamp column, and the personnel pulls out the measuring ruler for careful reading. The measuring mechanism measures the thickness of the screen, and the personnel can read carefully at close range, which is convenient to operate.

[0015] As a preferred technical solution of the present invention, the lighting mechanism includes a copper plate, a battery, a light bulb, a No. 1 wire, a No. 2 wire, a switch plate and an auxiliary spring. The copper plate is installed at the inner end of the detection slot, and a light bulb is installed at the outer end of the detection slot. The battery is connected between the light bulb and the copper plate through the No. 1 wire. A switch plate is installed in the detection slot through a pin shaft, and an auxiliary spring is connected between the switch plate and the detection slot. The switch plate is connected to the light bulb through the No. 2 wire. During specific operation and calibration, the abutting cylinder on the thickness measuring device drives the abutting plate to abut the abutting block, and the fine-tuning mechanism drives the thickness measuring device to slowly descend. The lower end of the thickness measuring device gradually abuts against the switch plate until the switch plate contacts the copper plate, so that the lighting mechanism forms a series circuit, the light bulb lights up, the thickness measuring device no longer descends, the abutting cylinder drives the abutting plate away from the abutting block, and the calibration is completed. The lighting mechanism and the fine-tuning mechanism assist the thickness measuring device in calibration, ensuring that the thickness measuring device can accurately measure the screen thickness and improve the accuracy.

[0016] As a preferred technical solution of the present invention, the fine-tuning mechanism includes a connecting motor, a threaded column and a lifting frame. The connecting motor is installed on the side wall of the main frame through a base. A threaded column is installed on the output shaft of the connecting motor. The threaded column is connected to the lifting frame through a threaded transmission method. The lifting frame is connected to the empty slot through a sliding fit. During specific operation, the lifting frame descends with the assistance of the connecting motor and the threaded column, and the descent is assisted.

[0017] As a preferred technical solution of the present invention, the lifting slide column includes a sliding inner frame, a rolling ball and a limiting upper block. The lower end of the sliding inner frame is equipped with a rolling ball through a pin shaft, and the limiting upper block is installed in the middle of the outer wall of the sliding inner frame, and the lower end of the limiting upper block is tightly attached to the upper end surface of the limiting lower block. During specific operation, the rolling ball facilitates the lifting slide column to slide on the upper end surface of the navigation screen, and the operation is simple.

[0018] As a preferred technical solution of the present invention, a scale line is arranged on the left side wall of the measuring ruler, and a handle ring is arranged on the upper end of the measuring ruler, and the handle ring facilitates personnel to pull out the measuring ruler.

[0019] As a preferred technical solution of the present invention, an I-shaped groove is provided at the lower end of the clamping column, and the clamping frame is located in the I-shaped groove. An annular plate is provided in the middle of the clamping column, and the annular plate is tightly attached to the upper end surface of the sleeve frame to ensure that the clamping column can be clamped in the socket, which is simple to operate and more compact.

[0020] When working, first, start working by sucking the bottom plate, sucking the bottom plate to the lower end surface of the navigator screen, and the push cylinder on the correction device drives the main frame to move to a suitable position so that the main frame can support the lower end surface of the navigator screen. In the second step, the thickness measuring device starts working. After the navigator screen is supported and sucked, the main cylinder drives the lifting slide column to move inward, and the lifting slide column rises according to the thickness of the navigator screen. Since the rising height of the lifting slide column is equal to the thickness of the screen, the measuring mechanism measures the rising height of the lifting slide column, and then the measuring mechanism starts working, and the lifting slide column lifts the measuring line plate. When the measuring line plate stops rising, the clamping frame and the clamping plate clamp the measuring ruler to ensure that the measuring line plate remains motionless. When the personnel need to read the thickness carefully, the clamping frame is away from the clamping column, and the personnel will The measuring ruler is pulled out for careful reading. In the third step, the thickness measuring device may have measurement errors after long-term use and needs to be calibrated. The calibration device starts working, and the lighting mechanism and the fine-tuning mechanism cooperate to calibrate the thickness measuring device to ensure that the thickness measuring device accurately measures the thickness. After that, the lighting mechanism starts working. During calibration, the air cylinder on the thickness measuring device drives the abutment plate to abut the abutment block, and the fine-tuning mechanism drives the thickness measuring device to slowly descend. The lower end of the thickness measuring device gradually abuts against the switch plate until the switch plate contacts the copper plate, so that the lighting mechanism forms a series circuit, the light bulb lights up, and the thickness measuring device no longer descends. The air cylinder drives the abutment plate away from the abutment block, and the calibration is completed. The functions of measuring the thickness of the vehicle navigation screen and calibrating the thickness measuring device can be realized.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention can solve the problems that when measuring the thickness of the existing navigation screen, personnel often perform single-point measurement on the screen, resulting in errors between the measurement result and the actual thickness, and the existing measuring instrument may deviate from the position after long-term use, reducing the measurement accuracy, and when measuring, because the screen is fixed on the instrument, personnel can only read the data at a long distance, etc. The present invention can realize the functions of measuring the thickness of the vehicle-mounted navigation screen and correcting the thickness measuring device, measure the screen thickness at multiple points, reduce the measurement error, correct the thickness measuring device used for a long time, improve the measurement accuracy, and personnel can read the measured data at close range and carefully, which is simple to operate;

[0023] 2. The present invention is provided with a suction bottom plate, which is used to suck the lower end surface of the navigator screen, and the operation is simple;

[0024] 3. The present invention is provided with a calibration device, which calibrates the thickness measuring device that has been used for a long time, thereby improving the measurement accuracy and being easy to operate;

[0025] 4. The present invention is provided with a thickness measuring device. Four thickness measuring devices perform multi-point detection on the thickness of the navigator screen, reducing the possibility of measurement errors. The measuring ruler can be pulled out for close-range reading, which is convenient for personnel to read and simple to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure between the correction device and the supporting plate of the present invention;

[0029] Figure 3 is a first structural schematic diagram of the thickness measuring device of the present invention;

[0030] Figure 4 is a second structural schematic diagram of the thickness measuring device of the present invention;

[0031] Figure 5 It is a third structural schematic diagram of the thickness measuring device of the present invention. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below with reference to specific diagrams. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0033] like Figures 1 to 5 As shown, a thickness detection device for a vehicle-mounted navigation screen includes a suction base plate 1, four correction devices 2 and four thickness measuring devices 3. The four correction devices 2 are evenly installed on the suction base plate 1, and a thickness measuring device 3 is installed on the upper end of each correction device 2.

[0034] The suction base plate 1 includes a supporting plate 11, two angle plates 12, a suction cup 13, a connecting spring 14, a top plate 15 and a top cylinder 16. The two angle plates 12 are installed on the supporting plate 11 through a pin shaft. The suction cups 13 are symmetrically arranged on the angle plates 12. The connecting spring 14 is connected between the two angle plates 12. The top cylinder 16 is installed on the right side of the rear end of the supporting plate 11, and the top of the top cylinder 16 is installed on the top plate 15. During specific operation, the suction base plate 1 sucks the lower end surface of the navigation screen, and the operation is simple.

[0035] The correction device 2 includes a push cylinder 21, a pulley 22, a main frame 23, a lighting mechanism 24 and a fine-tuning mechanism 25. The push cylinder 21 is installed on the supporting plate 11, and the top of the push cylinder 21 is installed on the main frame 23. The lower end of the main frame 23 is provided with a detection groove, and the upper end of the main frame 23 is provided with an empty groove. The lower end of the main frame 23 is installed with a pulley 22, and the lighting mechanism 24 is installed in the detection groove. The fine-tuning mechanism 25 is installed on the upper side of the outer end of the main frame 23. During specific operation, the lighting mechanism 24 and the fine-tuning mechanism 25 cooperate to calibrate the thickness measuring device 3 to ensure that the thickness measuring device 3 accurately measures the thickness. The push cylinder 21 drives the main frame 23 to move to a suitable position so that the main frame 23 can support the lower end surface of the navigator screen. The correction device 2 calibrates the thickness measuring device 3 that has been used for a long time, improves the measurement accuracy, and is easy to operate.

[0036] The thickness measuring device 3 includes a main cylinder 31, a fixed outer frame 32, a lifting slide column 33, an operating spring 36, a limit lower block 34, a slider 37, a slide groove 38, a measuring mechanism 39, a stop cylinder 40, a stop plate 41 and a stop block 42.

[0037] The master cylinder 31 is installed on the fine-tuning mechanism 25, and the top of the master cylinder 31 is installed on the fixed outer frame 32. A sliding groove is set at the left end of the fixed outer frame 32, and a sliding groove 38 is installed on the inner wall of the fixed outer frame 32. The sliding groove 38 is connected to the slider 37 by sliding cooperation. The slider 37 is installed on the outer wall of the lifting slide column 33. An operating spring 36 is connected between the lifting slide column 33 and the fixed outer frame 32. A measuring mechanism 39 is installed at the left end of the fixed outer frame 32, and a limiting lower block 34 is installed at the lower end of the inner wall of the fixed outer frame 32.

[0038] The right end of the fixed outer frame 32 is installed with an air cylinder 40 , the top end of the air cylinder 40 is installed on an air plate 41 , and the right end of the lifting slide column 33 is installed with an air block 42 , which corresponds to the air plate 41 .

[0039] During specific operation, after the navigation screen is supported and sucked, the main cylinder 31 drives the lifting slide 33 to move inward, and the lifting slide 33 rises according to the thickness of the navigation screen. Since the rising height of the lifting slide 33 is equal to the thickness of the screen, the measuring mechanism 39 measures the rising height of the lifting slide 33, and the abutting cylinder 40, the abutting plate 41 and the abutting block 42 cooperate with the auxiliary thickness measuring device 3 for correction processing. The four thickness measuring devices 3 perform multi-point detection on the thickness of the navigation screen, reducing the possibility of measurement errors, and the measuring ruler 395 can be pulled out for close-range reading, which is convenient for personnel to read the measurement and simple to operate.

[0040] The measuring mechanism 39 includes a sleeve frame 391, a clamping frame 392, a clamping cylinder 393, a clamping column 394, a measuring ruler 395, a measuring line plate 396, a sliding rod 397, a telescopic cylinder 398, a clamping frame 399, a clamping plate 3910 and a clamping cylinder 3911.

[0041] The sleeve frame 391 is installed at the left end of the fixed outer frame 32. The sleeve frame 391 is provided with a socket, and a clamping column 394 is sleeved in the socket. A clamping cylinder 393 is installed on the fixed outer frame 32. The clamping cylinder 393 is located below the sleeve frame 391. The top of the clamping cylinder 393 is installed on the clamping frame 392, and the upper end of the clamping column 394 is installed on the lower end of the measuring ruler 395.

[0042] The measuring ruler 395 is connected to the left end of the measuring line plate 396 by a sliding fit, and the right end of the measuring line plate 396 is located in the sliding groove. A sliding rod 397 is installed on the measuring line plate 396, and the sliding rod 397 is connected to the measuring ruler 395 by a sliding fit. A telescopic cylinder 398 is installed at the rear end of the measuring line plate 396, and the top of the telescopic cylinder 398 is installed on the clamping frame 399. A clamping cylinder 3911 is installed on the side wall of the clamping frame 399, and the top of the clamping cylinder 3911 is installed on the clamping plate 3910.

[0043] During specific operation, the lifting slide column 33 lifts up the measuring line plate 396. When the measuring line plate 396 stops rising, the clamp frame 399 and the clamp plate 3910 clamp the measuring ruler 395 to ensure that the measuring line plate 396 remains stationary. When the personnel need to read the thickness carefully, the clamp frame 392 moves away from the clamp column 394, and the personnel pulls out the measuring ruler 395 for careful reading. The measuring mechanism 39 measures the thickness of the screen, and the personnel can read the thickness carefully at close range, which is easy to operate.

[0044] The lighting mechanism 24 includes a copper plate 241, a battery 242, a bulb 243, a No. 1 wire 244, a No. 2 wire 245, a switch plate 246 and an auxiliary spring 247. The copper plate 241 is installed at the inner end of the detection slot, and the bulb 243 is installed at the outer end of the detection slot. The battery 242 is connected between the bulb 243 and the copper plate 241 through the No. 1 wire 244. The switch plate 246 is installed in the detection slot through a pin shaft. The auxiliary spring 247 is connected between the switch plate 246 and the detection slot. The switch plate 246 is connected to the bulb 243 through the No. 2 wire 245. When working, when calibrating , the air cylinder 40 on the thickness measuring device 3 drives the plate 41 to press against the block 42, and the fine-tuning mechanism 25 drives the thickness measuring device 3 to slowly descend, and the lower end of the thickness measuring device 3 gradually presses against the switch plate 246 until the switch plate 246 contacts the copper plate 241, so that the lighting mechanism 24 forms a series circuit, the bulb 243 lights up, the thickness measuring device 3 no longer descends, and the air cylinder 40 drives the plate 41 away from the block 42, and the calibration is completed. The lighting mechanism 24 and the fine-tuning mechanism 25 assist the thickness measuring device 3 in calibration, ensuring that the thickness measuring device 3 can accurately measure the screen thickness and improve the accuracy.

[0045] The fine-tuning mechanism 25 includes a connecting motor 251, a threaded column 252 and a lifting frame 253. The connecting motor 251 is installed on the side wall of the main frame 23 through a base. The threaded column 252 is installed on the output shaft of the connecting motor 251. The threaded column 252 is connected to the lifting frame 253 through a threaded transmission method. The lifting frame 253 is connected to the empty slot through a sliding fit. During specific operation, the lifting frame 253 descends with the assistance of the connecting motor 251 and the threaded column 252, and the descent is assisted.

[0046] The lifting slide column 33 includes a sliding inner frame 331, a rolling ball 332 and a limiting upper block 333. The rolling ball 332 is installed on the lower end of the sliding inner frame 331 through a pin shaft. The limiting upper block 333 is installed in the middle of the outer wall of the sliding inner frame 331, and the lower end of the limiting upper block 333 is tightly attached to the upper end surface of the limiting lower block 34. During specific operation, the rolling ball 332 facilitates the lifting slide column 33 to slide on the upper end surface of the navigation screen, and the operation is simple.

[0047] The left end side wall of the measuring ruler 395 is provided with scale lines, and the upper end of the measuring ruler 395 is provided with a handle ring, which makes it convenient for personnel to pull out the measuring ruler 395.

[0048] The lower end of the clamping column 394 is provided with an I-shaped groove, and the clamping frame 392 is located in the I-shaped groove. The middle part of the clamping column 394 is provided with an annular plate, which is tightly attached to the upper end surface of the sleeve frame 391 to ensure that the clamping column 394 can be clamped in the socket, which is simple to operate and more compact.

[0049] When working, first, the bottom plate 1 is sucked to start working, and the bottom plate 1 is sucked to suck the lower end surface of the navigation screen. The push cylinder 21 on the correction device 2 drives the main frame 23 to move to a suitable position so that the main frame 23 can support the lower end surface of the navigation screen. In the second step, the thickness measuring device 3 starts to work. After the navigation screen is supported and sucked, the main cylinder 31 drives the lifting slide 33 to move inward. The lifting slide 33 rises according to the thickness of the navigation screen. Since the rising height of the lifting slide 33 is equal to the thickness of the screen, the measuring mechanism 39 is The rising height of the lifting slide column 33 is measured, and then the measuring mechanism 39 starts to work, and the lifting slide column 33 lifts the measuring line plate 396. When the measuring line plate 396 stops rising, the clamping frame 399 and the clamping plate 3910 clamp the measuring ruler 395 to ensure that the measuring line plate 396 remains stationary. When the personnel need to read the thickness carefully, the clamping frame 392 is away from the clamping column 394, and the personnel pull out the measuring ruler 395 for careful reading. In the third step, the thickness measuring device 3 may have measurement errors after long-term use, and needs to be calibrated. The calibration device 2 starts to work The light-on mechanism 24 and the fine-tuning mechanism 25 cooperate to calibrate the thickness measuring device 3 to ensure that the thickness measuring device 3 accurately measures the thickness. After that, the light-on mechanism 24 starts to work. During calibration, the air cylinder 40 on the thickness measuring device 3 drives the plate 41 to press against the block 42, and the fine-tuning mechanism 25 drives the thickness measuring device 3 to slowly descend. The lower end of the thickness measuring device 3 gradually presses against the switch plate 246 until the switch plate 246 contacts the copper plate 241, so that the light-on mechanism 24 forms a series circuit, the bulb 243 lights up, and the thickness measuring device 3 no longer descends. The air cylinder 40 drives the plate 41 away from the block 42, and the calibration is completed. The function of measuring the thickness of the vehicle-mounted navigation screen and calibrating the thickness measuring device 3 is realized, which solves the problem that when measuring the thickness of the existing navigation screen, personnel often perform single-point measurement on the screen, resulting in an error between the measurement result and the actual thickness, and the existing measuring instrument may deviate from the position after long-term use, which reduces the measurement accuracy, and when measuring, because the screen is fixed on the instrument, personnel can only read the quantity data at a long distance, etc., and the purpose is achieved.

[0050] The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and the description in the specification are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A thickness detection device for a vehicle-mounted navigation screen, comprising a suction base plate (1), four correction devices (2) and four thickness measuring devices (3), characterized in that: Four correction devices (2) are evenly mounted on the suction base plate (1), and a thickness measuring device (3) is mounted on the upper end of each correction device (2); The suction bottom plate (1) comprises a supporting plate (11), two angle plates (12), a suction cup (13), a connecting spring (14), a top plate (15) and a top cylinder (16); the two angle plates (12) are mounted on the supporting plate (11) via a pin shaft; the suction cups (13) are symmetrically arranged on the angle plates (12); a connecting spring (14) is connected between the two angle plates (12); a top cylinder (16) is mounted on the right side of the rear end of the supporting plate (11); and the top end of the top cylinder (16) is mounted on the top plate (15); The correction device (2) comprises a push cylinder (21), a pulley (22), a main frame (23), a lighting mechanism (24) and a fine adjustment mechanism (25), wherein the push cylinder (21) is mounted on a supporting plate (11), the top end of the push cylinder (21) is mounted on the main frame (23), a detection slot is arranged at the lower end of the main frame (23), an empty slot is arranged at the upper end of the main frame (23), a pulley (22) is mounted at the lower end of the main frame (23), a lighting mechanism (24) is mounted in the detection slot, and a fine adjustment mechanism (25) is mounted on the upper side of the outer end of the main frame (23); The lighting mechanism (24) comprises a copper plate (241), a battery (242), a bulb (243), a No. 1 wire (244), a No. 2 wire (245), a switch plate (246) and an auxiliary spring (247); the copper plate (241) is installed at the inner end of the detection slot; the bulb (243) is installed at the outer end of the detection slot; the battery (242) is connected between the bulb (243) and the copper plate (241) via the No. 1 wire (244); the switch plate (246) is installed in the detection slot via a pin shaft; the auxiliary spring (247) is connected between the switch plate (246) and the detection slot; the switch plate (246) is connected to the bulb (243) via the No. 2 wire (245); The fine adjustment mechanism (25) comprises a connecting motor (251), a threaded column (252) and a lifting frame (253), wherein the connecting motor (251) is mounted on the side wall of the main frame (23) via a base, a threaded column (252) is mounted on the output shaft of the connecting motor (251), the threaded column (252) is connected to the lifting frame (253) via a threaded transmission, and the lifting frame (253) is connected to the empty slot via a sliding fit; The thickness measuring device (3) comprises a main cylinder (31), a fixed outer frame (32), a lifting slide column (33), an operating spring (36), a limit lower block (34), a slider (37), a slide groove (38), a measuring mechanism (39), a stop cylinder (40), a stop plate (41) and a stop block (42); The main cylinder (31) is mounted on the fine adjustment mechanism (25), the top end of the main cylinder (31) is mounted on the fixed outer frame (32), a sliding groove is arranged at the left end of the fixed outer frame (32), a sliding groove (38) is arranged on the inner wall of the fixed outer frame (32), the sliding groove (38) is connected to the slider (37) by means of sliding fit, the slider (37) is mounted on the outer wall of the lifting slide post (33), an operating spring (36) is connected between the lifting slide post (33) and the fixed outer frame (32), a measuring mechanism (39) is mounted on the left end of the fixed outer frame (32), and a limit lower block (34) is mounted on the lower end of the inner wall of the fixed outer frame (32); The right end of the fixed outer frame (32) is equipped with an air cylinder (40), the top end of which is equipped on an air cylinder (40), and the right end of the lifting slide column (33) is equipped with an air block (42), which corresponds to the air block (42) and the air plate (41). The measuring mechanism (39) comprises a sleeve frame (391), a clamping frame (392), a clamping cylinder (393), a clamping column (394), a measuring ruler (395), a measuring line plate (396), a sliding rod (397), a telescopic cylinder (398), a clamping frame (399), a clamping plate (3910) and a clamping cylinder (3911); The sleeve frame (391) is installed at the left end of the fixed outer frame (32), the sleeve frame (391) is provided with a plug hole, a clamping column (394) is sleeved in the plug hole, a clamping cylinder (393) is installed on the fixed outer frame (32), the clamping cylinder (393) is located below the sleeve frame (391), the top end of the clamping cylinder (393) is installed on the clamping frame (392), and the upper end of the clamping column (394) is installed at the lower end of the measuring ruler (395); The measuring ruler (395) is connected to the left end of the measuring line plate (396) by means of sliding fit, the right end of the measuring line plate (396) is located in the sliding groove, a sliding rod (397) is installed on the measuring line plate (396), the sliding rod (397) is connected to the measuring ruler (395) by means of sliding fit, a telescopic cylinder (398) is installed at the rear end of the measuring line plate (396), the top end of the telescopic cylinder (398) is installed on the clamping frame (399), a clamping cylinder (3911) is installed on the side wall of the clamping frame (399), and the top end of the clamping cylinder (3911) is installed on the clamping plate (3910).

2. The thickness detection device for a vehicle-mounted navigation screen according to claim 1 is characterized in that: The lifting slide column (33) comprises a sliding inner frame (331), a rolling ball (332) and a limiting upper block (333); the rolling ball (332) is installed at the lower end of the sliding inner frame (331) through a pin shaft; the limiting upper block (333) is installed in the middle of the outer wall of the sliding inner frame (331), and the lower end of the limiting upper block (333) is tightly attached to the upper end surface of the limiting lower block (34).

3. The device for detecting the thickness of a vehicle-mounted navigation screen according to claim 1, characterized in that: The left end side wall of the measuring ruler (395) is provided with scale lines, and the upper end of the measuring ruler (395) is provided with a handle ring.

4. The device for detecting the thickness of a vehicle-mounted navigation screen according to claim 1, characterized in that: The lower end of the clamping column (394) is provided with an I-shaped groove, and the clamping frame (392) is located in the I-shaped groove. The middle part of the clamping column (394) is provided with an annular plate, and the annular plate is tightly attached to the upper end surface of the sleeve frame (391).

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