Automobile roof strength detection device

Abstract

The utility model discloses an automobile roof strength detection device, which relates to the technical field of metal strength detection instruments and comprises a base, an accommodating groove is arranged on the upper surface of the base, a supporting mechanism is arranged in the accommodating groove, a support is mounted on the side surface of the base, a lifting mechanism is mounted on the support, and a mounting frame is arranged on the lifting mechanism. A pressure applying mechanism is arranged on the mounting frame, a fixing plate is mounted on the pressure applying mechanism, a pressure detecting mechanism is arranged on the lower surface of the fixing plate, and the pressure detecting mechanism is connected with an operating mechanism. A second motor, a rotating shaft, a gear and a rack enable a pressing plate to pressurize the roof at a fixed point, the pressing plate is prevented from sliding or inclining in the process of pressurizing the roof, when the roof deforms, the rack abuts against the automobile, the pressing plate continuously pressurizes the roof in the same direction through the rotating shaft, the gear and the rack, the stress direction of the roof is prevented from inclining, and the service life of the roof is prolonged. And the accuracy of an automobile roof strength detection result is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal strength detection instruments, in particular to a vehicle roof strength detection device. Background Art

[0002] The roof is an accessory on the car. When the car rolls over in a traffic accident, the roof cooperates with the side pillars to protect the people inside. Therefore, the strength of the car roof is particularly important. Therefore, after the car is designed, the roof needs to be strength tested so that the bearing strength of the roof can be intuitively understood. The strength of the car roof is implemented in accordance with the national standard GB26134-2010 "Compressive Strength of Passenger Car Roof". During the test, force must be applied to the connection between the roof and the side for detection.

[0003] After searching, the Chinese patent publication number CN211477850U ​​discloses a car roof strength detection device, which mainly places the roof by two first support plates. The lower end of the roof is hollow. The first support plates will not block the detection point of the roof, and the roof can be detected at multiple angles.

[0004] By comparing with the existing technologies in related fields, it can be seen that the existing method of detecting the roof of a car mainly conducts static testing. When the strength of the roof is tested, the connection between the roof and the body of the car is pressurized by a pressure plate. As the pressure gradually increases, some areas of the connection between the roof and the body of the car will be dented, causing the pressure direction of the pressure plate to deviate, which affects the results of the roof strength measurement. Utility Model Content

[0005] The purpose of the utility model is to provide a vehicle roof strength detection device in order to solve the above-mentioned problem.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] A vehicle roof strength detection device comprises a base, a storage groove is arranged on the upper surface of the base, a support mechanism is arranged in the storage groove, a bracket is installed on the side of the base, a lifting mechanism is installed on the bracket, a mounting frame is arranged on the lifting mechanism, a pressure mechanism is arranged on the mounting frame, a fixing plate is arranged on the pressing mechanism, a pressure detection mechanism is arranged on the lower surface of the fixing plate, and the pressure detection mechanism is connected to an operating mechanism;

[0008] The operating mechanism includes a pressing plate, which is installed on the pressure detection mechanism. A placement groove is provided on both sides of the center position of the lower surface of the pressing plate, and guide grooves are provided on both sides of the inside of the placement groove. A second motor is provided on the side of the pressing plate, and a rotating shaft is rotatably installed on the pressing plate, and the rotating shaft is connected to the output shaft of the second motor. A gear is provided on the part of the rotating shaft located in the placement groove, and the gear is located at the center position of the placement groove. A rack is slidably installed in the guide groove, and the rack meshes and connects the two sides of the gear. A pressure sensor is provided on the lower surface of the rack;

[0009] Limiting grooves are arranged on both sides of the inner part of the guide groove, and limiting blocks are arranged on both sides of the upper end of the rack, and the limiting blocks are slidably connected in the limiting grooves.

[0010] Furthermore, the pressure mechanism on the mounting frame includes a third hydraulic cylinder and a U-shaped seat. There are two groups of third hydraulic cylinders and both are installed on the mounting frame. Fixed blocks are installed on the telescopic ends of the two groups of third hydraulic cylinders. The U-shaped seat is arranged on the upper surface of the fixed plate, and the U-shaped seat is rotatably connected to the fixed block.

[0011] Furthermore, the lifting mechanism on the bracket includes a first motor and a screw, the first motor is mounted on the bracket, the screw is rotatably mounted on the bracket, the screw is connected to the output shaft of the first motor, and the screw is threadedly connected to the mounting frame.

[0012] Furthermore, the supporting mechanism in the storage groove includes a first hydraulic cylinder, which is arranged in the storage groove, and a supporting platform is installed on the telescopic end of the first hydraulic cylinder.

[0013] Furthermore, mounting grooves are arranged on the support platform, a second hydraulic cylinder is installed in the mounting groove, and a baffle is installed on the telescopic end of the second hydraulic cylinder.

[0014] Furthermore, an inclination sensor is installed on the upper surface of the fixing plate.

[0015] The beneficial effects compared with the prior art are as follows:

[0016] During the static strength test of the car roof, the rack and the pressure plate cooperate to apply pressure to the car roof, and the pressure is measured by the pressure detection mechanism. The strength test of the car roof is completed by the size of the bearing pressure of the car roof. At the same time, during the test, the pressure plate applies pressure to the roof at a fixed point through the second motor, the rotating shaft, the gear and the rack to prevent the pressure plate from sliding or tilting during the process of pressurizing the roof. As the bearing pressure of the car roof increases and the car roof deforms, the rack is pressed against the car, and the pressure plate continuously applies pressure to the car roof in the same direction through the rotating shaft, the gear and the rack to prevent the force direction of the car roof from tilting and changing, thereby effectively improving the accuracy of the car roof strength test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the first axis side structure of a vehicle roof strength detection device described in the utility model;

[0019] Figure 2 It is a schematic diagram of the second axis side structure of a vehicle roof strength detection device described in the utility model;

[0020] Figure 3 It is a schematic diagram of the connection structure of the pressing plate, placement groove and rack of a vehicle roof strength detection device described in the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of a pressing plate and a placement groove of a vehicle roof strength detection device described in the utility model when viewed from above;

[0022] Figure 5 The utility model is a kind of automobile roof strength detection device Figure 4 The enlarged structural diagram at A in the middle;

[0023] Figure 6 It is a schematic diagram of the connection structure of the mounting frame, the fixing plate and the pressing plate of the automobile roof strength detection device described in the utility model;

[0024] Figure 7 It is a schematic diagram of the cross-sectional structure of a pressure plate of a vehicle roof strength detection device described in the utility model;

[0025] Figure 8 The utility model is a kind of automobile roof strength detection device Figure 7 The enlarged structural diagram at B in the middle;

[0026] Fig. 9 It is a schematic diagram of the connection structure of the rack and the limit block of a vehicle roof strength detection device described in the utility model;

[0027] Fig.10 It is a schematic diagram of the third axis side structure of a vehicle roof strength detection device described in the utility model;

[0028] Fig.11 The utility model is a schematic diagram of the cross-sectional structure of a base of a vehicle roof strength detection device.

[0029] The following are the descriptions of the reference numerals:

[0030] 1. Base; 2. Storage slot; 3. First hydraulic cylinder; 4. Support platform; 5. Installation slot; 6. Second hydraulic cylinder; 7. Baffle; 8. Bracket; 9. First motor; 10. Screw; 11. Mounting frame; 12. Third hydraulic cylinder; 13. Fixed block; 14. Inclination sensor; 15. Fixed plate; 16. Pressure detection mechanism; 17. Pressing plate; 18. Second motor; 19. U-shaped seat; 20. Placement slot; 21. Rotating shaft; 22. Gear; 23. Rack; 24. Limiting slot; 25. Limiting block; 26. Guide slot; 27. Pressure sensor. DETAILED DESCRIPTION

[0031] like Figure 1-Figure 11 As shown, a vehicle roof strength detection device comprises a base 1, a storage groove 2 is arranged on the upper surface of the base 1, a support mechanism is arranged in the storage groove 2, a bracket 8 is installed on the side of the base 1, a lifting mechanism is installed on the bracket 8, a mounting frame 11 is arranged on the lifting mechanism, a pressure mechanism is arranged on the mounting frame 11, a fixing plate 15 is installed on the pressure mechanism, and a pressure detection mechanism 16 is arranged on the lower surface of the fixing plate 15. The pressure detection mechanism 16 adopts the existing technology to support and suspend the vehicle in the air through the support mechanism to reduce the influence of the vehicle wheels and the suspension system on the detection result. The lifting mechanism drives the pressure mechanism and the fixing plate 15 to move through the mounting frame 11, so that the operating mechanism is placed at the connection between the vehicle roof and the vehicle body, the pressure mechanism presses the connection between the vehicle roof and the vehicle body by the operating mechanism through the fixing plate 15 and the pressure detection mechanism 16, and the pressure detection mechanism 16 detects the extrusion force on the vehicle to complete the detection of the strength of the vehicle roof;

[0032] like Figure 1 , Figure 3-Figure 9As shown, the operating mechanism includes a pressing plate 17, which is installed on the pressure detection mechanism 16. A placement groove 20 is provided on both sides of the center position of the lower surface of the pressing plate 17, and guide grooves 26 are provided on both sides of the inner side of the placement groove 20. A second motor 18 is provided on the side of the pressing plate 17. A rotating shaft 21 is rotatably installed on the pressing plate 17, and the rotating shaft 21 is connected to the output shaft of the second motor 18. A gear 22 is provided on the part of the rotating shaft 21 located in the placement groove 20, and the gear 22 is located at the center position of the placement groove 20. A rack 23 is slidably installed in the guide groove 26, and the rack 23 is meshed and connected to both sides of the gear 22. A pressure sensor 27 is provided on the lower surface of the rack 23. The second motor 18 and the pressure sensor 27 work using the existing technology. When the pressing plate 17 contacts the car, the second motor 18 drives the gear 22 to rotate through the rotating shaft 21, and the gear 22 drives the rack 23 to move, so that the rack 23 is pressed tightly against the car. Whether the rack 23 is in contact with the car is detected by the pressure value of the pressure sensor 27. 6 The connection between the automobile roof and the automobile body is pressurized by the pressing plate 17. During the pressurization process, the pressing plate 17 is limited by the rack 23, so that the pressing plate 17 presses the roof at a fixed point, and the pressing plate 17 is prevented from sliding or tilting during the pressurization detection process, and the pressing plate 17 is ensured to continuously apply pressure to the connection between the automobile roof and the automobile body. As the pressure of the pressing plate 17 gradually increases, the connection between the automobile roof and the automobile body is deformed, and the second motor 18 drives the gear 22 to rotate through the rotating shaft 21, and the gear 22 drives the rack 23 to move, so that the rack 23 is tightly pressed against the automobile, and the rack 23 can always contact the deformed roof. The pressing plate 17 applies a force to the rack 23 through the rotating shaft 21 and the gear 22, and then continuously applies a force to the deformed roof through the rack 23, so as to ensure the uniformity of the force on the roof and the area of ​​the force applied to the roof, so as to avoid the change of the force direction and deformation direction of the roof due to uneven contact, thereby affecting the detection result, and effectively improving the accuracy of the detection result;

[0033] like Figure 5 , Figure 8 , Fig. 9 As shown, limiting grooves 24 are provided on both sides of the inner part of the guide groove 26, and limiting blocks 25 are provided on both sides of the upper end of the rack 23. The limiting blocks 25 are slidably connected in the limiting groove 24. The rack 23 drives the limiting blocks 25 to slide along the limiting groove 24. The limiting blocks 25 slide in the limiting groove 24. The limiting blocks 25 are limited by the limiting grooves 24 to prevent the limiting blocks 25 from being separated from the limiting grooves 24 during the movement. By limiting the limiting blocks 25, the stability of the rack 23 during the movement is improved. The rack 23 is limited by the limiting grooves 24 and the limiting blocks 25 to prevent the rack 23 from being separated from the guide groove 26.

[0034] like Figure 1 , Figure 2 , Figure 6 , Figure 7 , Fig.10 As shown, the pressure mechanism on the mounting frame 11 includes a third hydraulic cylinder 12 and a U-shaped seat 19. There are two groups of third hydraulic cylinders 12 and both are installed on the mounting frame 11. The telescopic ends of the two groups of third hydraulic cylinders 12 are both installed with fixed blocks 13. The U-shaped seat 19 is arranged on the upper surface of the fixed plate 15. The U-shaped seat 19 is rotatably connected to the fixed block 13. The third hydraulic cylinder 12 works using the existing technology. Since the connection between the car roof and the car body has a certain curvature, and the initial tilt angle of the fixed plate 15 is not fixed, before the detection, according to the curvature of the connection between the car roof and the car body, and the tilt angle of the fixed plate 15, one group The third hydraulic cylinder 12 works alone, and the third hydraulic cylinder 12 drives one side of the fixed plate 15 to move through the U-shaped seat 19 and the fixed block 13, so as to adjust the inclination angle of the fixed plate 15, so that the center position of the pressure plate 17 is aligned with the force position of the car roof, so that the pressure plate 17 can better fit the connection between the car roof and the car body. After the inclination angle of the fixed plate 15 is adjusted, the two groups of the third hydraulic cylinders 12 work at the same time, and the two groups of the third hydraulic cylinders 12 drive the fixed plate 15 to move through the U-shaped seat 19 and the fixed block 13 at the same time, so that the pressure plate 17 continuously pressurizes the vehicle, and completes the detection of the strength of the car roof.

[0035] like Figure 1 , Figure 2 , Fig.10 As shown, the lifting mechanism on the bracket 8 includes a first motor 9 and a screw 10. The first motor 9 is installed on the bracket 8, and the screw 10 is rotatably installed on the bracket 8. The screw 10 is connected to the output shaft of the first motor 9, and the screw 10 is threadedly connected to the mounting frame 11. The first motor 9 works using existing technology. The screw 10 is driven to rotate by the first motor 9, and the mounting frame 11 is driven to rise and fall by the screw 10, thereby adjusting the height of the mounting frame 11, which is convenient for detecting cars of different heights.

[0036] like Fig.10 , Fig.11 As shown, the supporting mechanism in the storage groove 2 includes a first hydraulic cylinder 3, which is arranged in the storage groove 2. A supporting platform 4 is installed on the telescopic end of the first hydraulic cylinder 3. The first hydraulic cylinder 3 works by adopting the existing technology. After the car is placed on the base 1, the wheels and suspension system of the car will buffer the car body. The first hydraulic cylinder 3 drives the supporting platform 4 to move, and the car is supported by the supporting platform 4, so that the car body is suspended in the air, so that only the car body is subjected to force during the detection process, reducing the influence of the car wheels and suspension system on the detection results.

[0037] like Fig.10As shown, mounting grooves 5 are arranged on the support platform 4, and a second hydraulic cylinder 6 is installed in the mounting groove 5. A baffle 7 is installed on the telescopic end of the second hydraulic cylinder 6. The second hydraulic cylinder 6 works by adopting the existing technology. The upper surface of the baffle 7 is higher than the upper surface of the support platform 4. When the support platform 4 supports the chassis of the automobile, the second hydraulic cylinder 6 clamps and fixes the chassis of the automobile through the baffle 7, thereby improving the stability of the automobile during the detection process and preventing the automobile from sliding during the detection process and affecting the detection results.

[0038] like Figure 1 , Figure 6 , Figure 7 As shown, a tilt sensor 14 is installed on the upper surface of the fixing plate 15. The tilt sensor 14 works by adopting the existing technology. When the angle of the fixing plate 15 needs to be adjusted during the strength detection of automobiles of different brands, the fixing plate 15 drives the tilt sensor 14 to rotate. The tilt angle of the fixing plate 15 is detected by the tilt sensor 14 to avoid the tilt angle of the fixing plate 15 being adjusted beyond the range, thereby improving the safety during the detection process.

[0039] Working principle: Figure 1 , Fig.10 , Fig.11 As shown, when testing the strength of the car roof, the car is placed on the base 1, and the first hydraulic cylinder 3 drives the support platform 4 to move. At the same time, the second hydraulic cylinder 6 drives the baffle 7 to move and stretch. When the support platform 4 contacts the chassis of the car, the car is supported by the support platform 4, and the baffle 7 is driven by the second hydraulic cylinder 6 to move in the opposite direction, so that the baffle 7 is clamped on the chassis of the car, and the chassis of the car is clamped and fixed by the baffle 7;

[0040] like Figure 1 , Figure 2 , Fig.10 As shown, according to the height of the car to be detected, the first motor 9 drives the screw 10 to rotate, and the screw 10 drives the mounting frame 11 to move, so as to adjust the height of the pressing plate 17 so that the pressing plate 17 moves to the height of the car roof;

[0041] like Figure 1 , Figure 6 , Figure 7 , Fig.10 As shown, the inclination angle of the fixing plate 15 is detected by the inclination sensor 14. According to the curvature of the connection between the automobile roof and the automobile body, and the inclination angle of the fixing plate 15, one group of the third hydraulic cylinders 12 works alone, and the third hydraulic cylinders 12 drive one side of the fixing plate 15 to move through the U-shaped seat 19 and the fixing block 13, thereby adjusting the inclination angle of the fixing plate 15, so that the center position of the pressure plate 17 is aligned with the force position of the automobile roof;

[0042] like Figure 1 , Figure 2 , Figure 6 , Figure 7 , Fig.10 As shown, two groups of third hydraulic cylinders 12 work simultaneously, and the two groups of third hydraulic cylinders 12 simultaneously drive the fixing plate 15 to move through the U-shaped seat 19 and the fixing block 13, and the fixing plate 15 drives the pressure plate 17 to fit on the car through the pressure detection mechanism 16;

[0043] At the same time, if Figure 1 , Figure 3-Figure 9 As shown, when the pressure plate 17 contacts the car, the second motor 18 drives the shaft 21 to rotate, the shaft 21 drives the gear 22 to rotate, and the gear 22 drives the rack 23 to move, so that the rack 23 is pressed against the car, and the pressure value of the pressure sensor 27 is used to detect whether the rack 23 is in contact with the car;

[0044] like Figure 1 , Figure 2 , Figure 6 , Figure 7 , Fig.10 As shown, two groups of third hydraulic cylinders 12 simultaneously drive the fixed plate 15 to move through the U-shaped seat 19 and the fixed block 13, and the fixed plate 15 drives the pressing plate 17 to perform pressure testing on the connection between the car roof and the car body through the pressure detection mechanism 16. During the pressure testing process, the pressing plate 17 is limited by the rack 23, so that the pressing plate 17 performs fixed-point pressure testing on the roof, and the sliding or tilting of the pressing plate 17 during the pressure testing process affects the testing; while the car is subjected to force, the car squeezes the pressure detection mechanism 16 through the pressing plate 17, and the squeezing force on the car is detected by the pressure detection mechanism 16, so that the force change of the car roof can be detected in real time;

[0045] At the same time, if Figure 1 , Figure 3-Figure 9 As shown, as the pressure of the pressure plate 17 gradually increases, the connection between the car roof and the car body is deformed, and the external controller controls the second motor 18 to work again. The second motor 18 drives the gear 22 to rotate through the rotating shaft 21, and the gear 22 drives the rack 23 to move, so that the rack 23 is pressed tightly against the car. The pressure plate 17 continuously applies pressure to the car in the same direction through the rotating shaft 21, the gear 22 and the rack 23 to avoid the force direction of the car from tilting. At the same time, the pressure plate 17 can continuously apply force to the deformed position of the roof through the rack 23 to ensure the uniformity of the force applied to the roof, avoid the deformation of the roof affecting the detection results, and effectively improve the accuracy of the detection results.

[0046] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A vehicle roof strength detection device, characterized in that: The device comprises a base, wherein a storage groove is provided on the upper surface of the base, a support mechanism is provided in the storage groove, a bracket is installed on the side of the base, a lifting mechanism is installed on the bracket, a mounting frame is provided on the lifting mechanism, a pressure mechanism is provided on the mounting frame, a fixing plate is installed on the pressing mechanism, a pressure detection mechanism is provided on the lower surface of the fixing plate, and the pressure detection mechanism is connected to an operating mechanism; The operating mechanism includes a pressing plate, which is installed on the pressure detection mechanism. A placement groove is provided on both sides of the center position of the lower surface of the pressing plate, and guide grooves are provided on both sides of the inside of the placement groove. A second motor is provided on the side of the pressing plate. A rotating shaft is rotatably installed on the pressing plate, and the rotating shaft is connected to the output shaft of the second motor. A gear is provided on the part of the rotating shaft located in the placement groove, and the gear is located at the center position of the placement groove. A rack is slidably installed in the guide groove, and the rack is meshed and connected to both sides of the gear. A pressure sensor is provided on the lower surface of the rack; Limiting grooves are arranged on both sides of the inner part of the guide groove, and limiting blocks are arranged on both sides of the upper end of the rack, and the limiting blocks are slidably connected in the limiting grooves.

2. The vehicle roof strength detection device according to claim 1, characterized in that: The pressure mechanism on the mounting frame includes a third hydraulic cylinder and a U-shaped seat. There are two groups of the third hydraulic cylinders and both are installed on the mounting frame. Fixed blocks are installed on the telescopic ends of the two groups of the third hydraulic cylinders. The U-shaped seat is arranged on the upper surface of the fixed plate, and the U-shaped seat is rotatably connected to the fixed block.

3. The automobile roof strength detection device according to claim 1, characterized in that: The lifting mechanism on the bracket includes a first motor and a screw rod. The first motor is installed on the bracket. The screw rod is rotatably installed on the bracket. The screw rod is connected to the output shaft of the first motor and is threadedly connected to the mounting frame.

4. The vehicle roof strength detection device according to claim 1, characterized in that: The supporting mechanism in the receiving groove comprises a first hydraulic cylinder, the first hydraulic cylinder is arranged in the receiving groove, and a supporting platform is installed on the telescopic end of the first hydraulic cylinder.

5. The vehicle roof strength detection device according to claim 4, characterized in that: The support platform is provided with mounting grooves arranged in a row, a second hydraulic cylinder is installed in the mounting groove, and a baffle is installed on the telescopic end of the second hydraulic cylinder.

6. The automobile roof strength detection device according to claim 1, characterized in that: An inclination sensor is installed on the upper surface of the fixing plate.

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