Vehicle outline dimension measuring device

Abstract

The present invention discloses a vehicle outline dimension measuring device, which relates to the field related to vehicle dimension measurement, and includes a fixed base fixed on a horizontal ground, a dimension measuring assembly is fixedly installed at the middle position of the top of the fixed base, and a loading platform is slidably arranged inside the top of the fixed base; it also includes: a sealed oil cavity is fixedly installed at the bottom position of the loading platform, and a side limiting mechanism and a rear limiting mechanism are arranged at the top position of the loading platform, and after the side limiting mechanism is limited, the rear limiting mechanism can realize the fitting and limiting work of the rear wheel of the vehicle. The vehicle outline dimension measuring device is provided with a side limiting mechanism and a rear limiting mechanism, and the side and rear sides of the vehicle are limited by the side limiting mechanism and the rear limiting mechanism, so that the vehicle can be stably limited to avoid the phenomenon of deviation.

Description

Technical Field

[0001] The present invention relates to the technical field related to vehicle dimension measurement, and in particular to a vehicle outline dimension measuring device. Background Art

[0002] With the development of the transportation industry, in order to avoid safety problems caused by overloading of vehicles, it is necessary to use contour measuring equipment to measure the contour of the vehicle. The measurement parameters include the length, height and width of the vehicle, so as to determine whether the contour size of the vehicle exceeds the specified range. The contour measurement of traditional vehicles is generally carried out manually or by using a gantry. This measurement method has a narrow measurement area and cannot fully measure the width of the vehicle. At the same time, due to the external influence of the vehicle body vibration during measurement, the measurement deviation occurs, which greatly reduces the measurement accuracy of large transport vehicles. In addition, the gantry crane used for traditional vehicle contour measurement cannot be freely installed and disassembled, is difficult to move, and is not conducive to user use.

[0003] In order to solve the above problems, reference may be made to a mobile vehicle contour measuring instrument disclosed in the prior art (application number CN201910313546.5, Chinese patent published on June 18, 2024). The measuring instrument drives the first support rod and the detection camera body on the second support rod to move horizontally through the rotation of the second rotating motor to measure the length of the vehicle, and then compares the three test data through software to eliminate interference factors, and finally obtains the actual value of the vehicle's outer contour. The measurement direction is wider and can be moved at will, which is conducive to measuring the contour of the vehicle and overcomes the external influence of the vehicle's body vibration during its own operation on the vehicle.

[0004] At the same time, reference can be made to the automobile contour dimension measuring machine disclosed in the prior art (application number CN200810211707.1, Chinese patent published on August 10, 2011). The measuring instrument combines the requirements of measurement and traffic management to design an automatic measuring device with high measurement accuracy and fast measurement. The vehicle driver can quickly complete the three-dimensional dimension measurement without slowing down, stopping, and waiting.

[0005] Finally, reference can be made to a method for automatically measuring vehicle contour dimensions disclosed in the prior art (application number CN201410079662.2, Chinese patent published on February 23, 2018). The measuring instrument can realize automatic measurement of vehicle length, width, and height parameters. Especially for specific occasions such as automobile inspection stations or other highways and traffic management departments, this method can be used to automatically measure contour parameters of various models of vehicles without stopping. This method greatly reduces the labor intensity of vehicle contour parameter measurement, improves measurement quality and efficiency, and reduces measurement costs.

[0006] Although the existing technology can deal with the above defects, the vehicle still needs to be moved to a specified position during the detection process, and then static detection is achieved by moving the vehicle. During the detection process, it is very easy for the vehicle to shift, so it is necessary to limit the position during the measurement process.

[0007] We propose a vehicle profile dimension measuring device to solve the above problems. Summary of the invention

[0008] The purpose of the present invention is to provide a vehicle contour dimension measuring device to solve the problem that the detection equipment currently on the market proposed in the above background technology needs to move the vehicle to a specified position during the detection process, and realize static detection by driving the vehicle to move, which leads to the phenomenon that the vehicle is easily offset during the detection process, and therefore it is necessary to limit the position during the measurement process.

[0009] To achieve the above object, the present invention provides the following technical solution: a vehicle contour dimension measuring device, comprising a fixed base fixed on a horizontal ground, a dimension measuring assembly fixedly installed at the middle position of the top of the fixed base, and a loading platform slidably arranged inside the top of the fixed base;

[0010] It also includes: a sealed oil chamber is fixedly installed at the bottom of the loading platform, and the hydraulic oil in the sealed oil chamber is transported to the bottom of the loading platform to limit the position of the vehicle carried at the top of the loading platform, and a side limit mechanism and a rear limit mechanism are arranged at the top of the loading platform, and after the side limit mechanism is limited, the rear limit mechanism can realize the fitting and limiting work of the rear wheels of the vehicle;

[0011] A driving mechanism is fixed to one side of the top of the fixed base, and the driving mechanism is set to enable the loading platform to slide at the top position of the fixed base. A fixed rack is fixed to one side of the top of the fixed base, and the setting of the fixed rack can realize the hydraulic oil transportation work inside the sealed oil chamber. A slope is fixed to the left side of the fixed base, and the setting of the slope facilitates the vehicle to climb the slope.

[0012] Preferably, the driving mechanism includes a fixed motor fixedly installed on the top of the fixed base, the output end of the fixed motor is fixed at the end of the ball screw, the outer side of the ball screw is threadedly connected to the bottom position of the stage, the other side of the bottom of the stage is slidably arranged on the outer side of the guide rod, both ends of the guide rod are fixed on the top of the fixed base, and one end of the ball screw is rotatably arranged in an internal position of the fixed base, so as to realize the movement of the stage at the bottom of the dimension measuring component.

[0013] Preferably, a plurality of groups of rollers are fixed at the bottom of the loading platform, and a sliding structure is formed between the loading platform and the inside of the fixed base through a ball screw. Through the plurality of groups of rollers, the loading platform can slide at the top of the fixed base through the rollers.

[0014] Preferably, a rotating gear is rotatably provided at the bottom position of the loading platform, and a threaded rod is fixed at the center position of the rotating gear, the outer middle part of the threaded rod is rotatably provided at the bottom of the sealing oil chamber, and the outer side of the threaded rod is threadedly connected to the inner side of the sealing oil push plate, and the sealing oil push plate is slidably provided inside the sealing oil chamber, and the top side position of the sealing oil chamber is connected to the side limiting mechanism through the first delivery pipe, which can facilitate the transportation and recovery of the hydraulic oil.

[0015] Preferably, the side limiting mechanism includes a fixed tube connected to the middle position of the first delivery pipe, the bottom position of the fixed tube is fixed inside the top of the loading platform, two groups of push rods are slidably arranged inside the fixed tube, the ends of the two groups of push rods are connected by a return spring, and a side limiting plate is fixed at one end of the push rod away from the fixed tube, and the outer side of the side limiting plate is slidably arranged on the top of the loading platform, thereby limiting the side position of the vehicle.

[0016] Preferably, the rear limiting mechanism is composed of a rotation mechanism and a translation mechanism, and one end of the rotation mechanism is connected to a second delivery pipe connected to an end position of a fixed pipe away from the first delivery pipe, the output end of the second delivery pipe is connected to the middle position of the driving member, and two groups of rotating rods are rotatably arranged inside both ends of the driving member, the outer ends of the rotating rods are rotatably arranged on the side of the moving slide, and the rotating position of the rotating rod and the moving slide is connected to a torsion spring for easy resetting of the rotation, and a rear limiting block is fixed to the outer side of the middle part of the rotating rod, and the rear wheel position of the vehicle can be limited by the setting of the rear limiting mechanism.

[0017] Preferably, the rear limit block is also set as a slope, and the slope angle of the rear limit block is the same as the slope angle of the matching spring. The rotation range of the rear limit block is 0 to 180 degrees. The rear limit block forms a rotating structure between the rotating rod and one side of the movable skateboard, and the vehicle's climbing work can be facilitated by the cooperation between the rear limit block and the matching spring.

[0018] Preferably, the interior of the driving member includes two groups of piston blocks that are arranged in opposite directions for movement, and the two groups of piston blocks are connected by matching springs. The outer sides of the piston blocks are tightly attached to the inner walls of the driving member, and a spiral cylinder is fixed to the sides of the piston blocks. The inner side of the spiral cylinder is spirally connected to the rotating rod that extends into the inner side of the driving member. The pitch of the spiral cylinder is relatively large, and the outer side of the spiral cylinder is slidably arranged on the inner wall of the slide groove, so that the rotating rod spirally connected inside the driving member can be rotated.

[0019] Preferably, the translation mechanism includes a third transport pipe, the outer end of the third transport pipe is fixed to one side of the movable slide, and the bottom of the movable slide is slidably arranged inside the loading platform, which can facilitate the setting of the rear limit block to achieve smooth movement, thereby achieving the purpose of fitting the rear wheels of the vehicle.

[0020] Preferably, the interior of the third delivery pipe includes a horizontal cylinder fixed at one end of the loading platform, a horizontal bar is slidably arranged inside the horizontal cylinder, the outer end of the horizontal bar is fixed to one side of the movable slide, the inner end position of the horizontal bar is fixed to the head end of the connecting spring, and the tail end of the connecting spring is fixed to the internal position of the horizontal cylinder, so that the horizontal bar can drive the movable slide to move stably inside the fixed base.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: the vehicle contour dimension measuring device is provided with a side limiting mechanism and a rear limiting mechanism, and the side and rear sides of the vehicle are limited by the side limiting mechanism and the rear limiting mechanism, so that the vehicle can be limited stably to avoid the phenomenon of deviation. The specific contents are as follows:

[0022] 1. A driving mechanism is provided, and the operation of the driving mechanism can realize the delivery and recovery of the hydraulic oil inside the sealed oil chamber, and can realize the driving operation of the side limit mechanism and the rear limit mechanism;

[0023] Furthermore, a side limiting mechanism is provided, and through the fixed tube provided in the side limiting mechanism, the push rod can drive the return spring to move relatively, so as to limit the side of the vehicle;

[0024] Furthermore, a rear limit mechanism is provided. Through the cooperation of the driving member, the rotating rod can drive the rear limit block to rotate, and the rear limit block is moved by the moving slide plate, so that the moving slide plate can slide stably on one side of the loading platform, and the rear wheel of the vehicle can be fitted and limited.

[0025] 2. A ball screw is provided, and the output end of the fixed motor can drive the ball screw to rotate, so that the ball screw drives the stage to move stably through the guide rod, and the vehicle is measured by the fixed motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0027] Figure 2 For the present invention Figure 1 The enlarged structural diagram at A in the middle;

[0028] Figure 3 It is a schematic diagram of the structure of the loading platform of the present invention when viewed from above;

[0029] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the sealing oil chamber of the present invention;

[0030] Figure 5 It is a schematic diagram of the top view of the side limit plate of the present invention;

[0031] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0032] Figure 7 It is a schematic diagram of the cross-sectional structure of the driving member of the present invention;

[0033] Figure 8 This is a schematic diagram of the main cross-sectional structure of the third pipeline of the present invention;

[0034] Fig. 9 It is a schematic diagram of the state after the object stage of the present invention moves.

[0035] In the figure: 1. fixed base; 101. ramp; 2. dimension measuring assembly; 3. fixed motor; 4. ball screw; 5. guide rod; 6. loading platform; 601. roller; 7. fixed rack; 8. rotating gear; 9. threaded rod; 10. sealed oil chamber; 11. sealed oil push plate; 12. first delivery pipe; 13. fixed pipe; 14. push rod; 15. return spring; 16. side limit plate; 17. second delivery pipe; 18. third delivery pipe; 1801. cross cylinder; 1802. cross rod; 1803. connecting spring; 19. driving member; 1901. matching spring; 1902. piston block; 1903. spiral cylinder; 1904. slide groove; 20. rotating rod; 21. rear limit block; 22. torsion spring; 23. moving slide plate. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1-Figure 9 , the present invention provides the following technical solutions:

[0038] Embodiment 1: In order to solve the problem that the detectors currently on the market still need to move the vehicle to a specified position during the detection process, and then realize static detection by driving the vehicle to move, but the vehicle is easily offset during the detection process, so the limit work is required during the measurement process. Figure 1 -Attached Figure 5 and attached Fig. 9 , including a fixed base 1 fixed on a horizontal ground, a dimension measuring component 2 is fixedly installed at the middle position of the top of the fixed base 1, and a loading platform 6 is slidably arranged inside the top of the fixed base 1: a sealed oil chamber 10 is fixedly installed at the bottom position of the loading platform 6, and the hydraulic oil in the sealed oil chamber 10 is transported to the bottom position of the loading platform 6 to realize the limiting work of the vehicle carried at the top position of the loading platform 6, and a side limiting mechanism and a rear limiting mechanism are arranged at the top position of the loading platform 6. After the side limiting mechanism is limited, the rear limiting mechanism can realize the fitting limiting work of the rear wheel of the vehicle; a driving mechanism is fixed on one side of the top of the fixed base 1, and the setting of the driving mechanism realizes the sliding of the loading platform 6 at the top position of the fixed base 1 The fixed base 1 is movable, and a fixed rack 7 is fixed at one side of the top of the fixed base 1. The setting of the fixed rack 7 can realize the hydraulic oil delivery work inside the sealed oil chamber 10. A slope 101 is fixed at the left side of the fixed base 1. The setting of the slope 101 is convenient for the vehicle to climb. The driving mechanism includes a fixed motor 3 fixedly installed on the top of the fixed base 1. The output end of the fixed motor 3 is fixed at the end of the ball screw 4. The outer side of the ball screw 4 is threadedly connected to the bottom position of the stage 6. The other side of the bottom of the stage 6 is slidably set on the outer side of the guide rod 5. The two ends of the guide rod 5 are fixed at the top of the fixed base 1. One end of the ball screw 4 is rotatably set at the internal position of the fixed base 1. Several groups of rollers 601 are fixed at the bottom position of the stage 6. The stage 6 forms a sliding structure between the ball screw 4 and the inside of the fixed base 1. A rotating gear 8 is rotatably provided at the bottom of the loading platform 6, and a threaded rod 9 is fixed at the center of the rotating gear 8. The middle outer side of the threaded rod 9 is rotatably provided at the bottom of the sealing oil chamber 10. In addition, the outer side of the threaded rod 9 is threadedly connected to the inner side of the sealing oil push plate 11, and the sealing oil push plate 11 is slidably provided inside the sealing oil chamber 10. The top side of the sealing oil chamber 10 is connected to the side limit mechanism through the first delivery pipe 12. The side limit mechanism includes a fixed pipe 13 connected to the middle of the first delivery pipe 12, the bottom of the fixed pipe 13 is fixed inside the top of the loading platform 6, two groups of push rods 14 are slidably provided inside the fixed pipe 13, the ends of the two groups of push rods 14 are connected by a reset spring 15, a side limit plate 16 is fixed at one end of the push rod 14 away from the fixed pipe 13, and the outer side of the side limit plate 16 is slidably provided at the top of the loading platform 6.

[0039] First, the vehicle needs to be moved to the top of the loading platform 6, and the slope 101 and the inclined surface of the rear limit block 21 are kept at the same horizontal line. By slowly starting the fixed motor 3, the output end of the fixed motor 3 can drive the ball screw 4 to rotate, so that the threaded loading platform 6 driven by the ball screw 4 can be stably moved through the guide rod 5, and the rotating gear 8 and the fixed rack 7 arranged at the bottom of the loading platform 6 can be meshed, so that the threaded rod 9 connected to the center of the rotating gear 8 slides inside the sealed oil chamber 10. At this time, the sealing push oil plate 11 inside the sealing oil chamber 10 will recover the hydraulic oil through the first delivery pipe 12. When the first delivery pipe 12 is recovered, it will first act on the inside of the fixed pipe 13. At this time, the push rod 14 arranged inside the fixed pipe 13 will be reset and moved by the reset spring 15, so that the push rod 14 will drive the side limit plates 16 moving on both sides to move relative to each other. At this time, the two groups of side limit plates 16 will move relative to each other, and the outer side of the side limit plates 16 will limit the side position of the vehicle to prevent the vehicle from deviating.

[0040] Embodiment 2: To prevent the rear wheels of the vehicle from rolling, please refer to the attached Figure 1 -Attached Fig. 9The rear side limit mechanism is composed of a rotation mechanism and a translation mechanism, and one end of the rotation mechanism is connected to the second delivery pipe 17 connected to the end position of the fixed pipe 13 away from the first delivery pipe 12, and the output end of the second delivery pipe 17 is connected to the middle position of the driving member 19, and two sets of rotating rods 20 are rotatably arranged inside the two ends of the driving member 19, and the outer ends of the rotating rods 20 are rotatably arranged on the side of the moving slide 23, and the rotating position of the rotating rod 20 and the moving slide 23 is connected with a torsion spring 22 for easy reset rotation, and a rear limit block 21 is fixed to the outer side of the middle part of the rotating rod 20. The rear limit block 21 is also set as an inclined surface, and the inclined surface angle of the rear limit block 21 is set the same as the inclined surface angle of the slope 101, and the rotation range of the rear limit block 21 is 0 to 180 degrees. The rear limit block 21 forms a rotating structure between the rotating rod 20 and one side of the moving slide 23. The interior of the driving member 19 includes two groups of piston blocks 1902 that are arranged in opposite directions. The two groups of piston blocks 1902 are connected by a matching spring 1901. The outer side of the piston block 1902 is tightly attached to the inner wall of the driving member 19. A spiral barrel 1903 is fixed to the side of the piston block 1902. The inner side of the spiral barrel 1903 is spirally connected to the rotating rod 20 and extends into the inner side of the driving member 19. The pitch of the spiral barrel 1903 is relatively large. The outer side of the spiral barrel 1903 is slidably arranged on the inner wall of the slide groove 1904. The translation mechanism includes a third delivery pipe 18. The outer end of the third delivery pipe 18 is fixed to one side of the moving slide 23. The bottom of the moving slide 23 is slidably arranged inside the stage 6. The interior of the third delivery pipe 18 includes a horizontal cylinder 1801 fixed at one end of the loading platform 6, and a horizontal rod 1802 is slidably arranged inside the horizontal cylinder 1801. The outer end of the horizontal rod 1802 is fixed to one side of the moving slide 23, and the inner end of the horizontal rod 1802 is fixed to the head end of the connecting spring 1803. The tail end of the connecting spring 1803 is fixed to the inner position of the horizontal cylinder 1801.

[0041] When the movement of the sealing push plate 11 continues, the hydraulic oil inside the sealing oil chamber 10 can be continuously absorbed. At this time, the first pipe 12, the second pipe 17 and the third pipe 18 will all rotate. Since one side of the rear limit block 21 is attached to one side of the worktable 6, the third pipe 18 will not work at this time, and only the second pipe 17 will work. Since one end of the third pipe 18 is connected to the driving member 19, the piston block 1902 attached to the inside of the driving member 19 will move relatively, so that the piston block 1902 can drive the spiral cylinder 1903 to slide through the slide groove 1904, and the interior of the spiral cylinder 1903 is spirally connected to one end of the rotating rod 20, so that the rotating rod 20 can drive the rear The limit block 21 rotates on one side of the mobile slide 23, and the torsion spring 22 also rotates. When the side of the rear limit block 21 is no longer in contact with the side of the loading platform 6, the rear limit block 21 does not rotate, and the third delivery pipe 18 provided will work. At this time, the cross bar 1802 will slide inside the cross cylinder 1801, so that the cross bar 1802 drives the mobile slide 23 to slide on one side of the loading platform 6. At this time, one side of the rear limit block 21 can be in contact with the outer side of the rear wheel of the vehicle, so that the rear wheel of the vehicle can be limited. Then, the fixed motor 3 is started continuously, and the loading platform 6 will slide stably inside the fixed base 1. At this time, the outline size of the vehicle can be measured by the size measuring component 2.

[0042] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle profile dimension measuring device, comprising a fixed base (1) fixed on a horizontal ground, a dimension measuring assembly (2) fixedly mounted at the middle of the top of the fixed base (1), and a loading platform (6) slidably arranged inside the top of the fixed base (1); It is characterized in that Also includes: A sealed oil chamber (10) is fixedly installed at the bottom of the loading platform (6), and the hydraulic oil in the sealed oil chamber (10) is transported to the bottom of the loading platform (6) to limit the position of the vehicle carried at the top of the loading platform (6). A side limit mechanism and a rear limit mechanism are arranged at the top of the loading platform (6), and after the side limit mechanism is limited, the rear limit mechanism can realize the position limiting work of the rear wheel of the vehicle; A driving mechanism is fixed to one side of the top of the fixed base (1), and the setting of the driving mechanism enables the loading platform (6) to slide at the top position of the fixed base (1). A fixed rack (7) is fixed to one side of the top of the fixed base (1), and the setting of the fixed rack (7) can realize the hydraulic oil delivery work inside the sealed oil chamber (10). A slope (101) is fixed to the left side of the fixed base (1), and the setting of the slope (101) facilitates the vehicle to climb the slope. The rear side limiting mechanism is composed of a rotating mechanism and a translation mechanism, and one end of the rotating mechanism is connected to a second delivery pipe (17) connected to an end position of the fixed pipe (13) away from the first delivery pipe (12), the output end of the second delivery pipe (17) is connected to the middle position of the driving member (19), and two groups of rotating rods (20) are rotatably arranged inside the two ends of the driving member (19), the outer ends of the rotating rods (20) are rotatably arranged on the side of the moving slide plate (23), and the rotating position of the rotating rod (20) and the moving slide plate (23) is connected to a torsion spring (22) for facilitating resetting, and a rear limiting block (21) is fixed to the outer side of the middle part of the rotating rod (20); The rear limit block (21) is also arranged as an inclined surface, and the inclined surface angle of the rear limit block (21) is arranged identically to the inclined surface angle of the matching spring (1901). The rotation range of the rear limit block (21) is 0 to 180 degrees. The rear limit block (21) forms a rotation structure through the rotating rod (20) and one side of the moving slide plate (23); The interior of the driving member (19) includes two groups of piston blocks (1902) that are arranged to move in opposite directions. The two groups of piston blocks (1902) are connected by a matching spring (1901). The outer side of the piston block (1902) is tightly attached to the inner wall of the driving member (19). A spiral cylinder (1903) is fixed to the side of the piston block (1902). The inner side of the spiral cylinder (1903) is spirally connected to the rotating rod (20) and extends into the inner side of the driving member (19). The pitch of the spiral cylinder (1903) is relatively large, and the outer side of the spiral cylinder (1903) is slidably arranged on the inner wall of the slide groove (1904).

2. A vehicle contour dimension measuring device according to claim 1, characterized in that: The driving mechanism comprises a fixed motor (3) fixedly mounted on the top of the fixed base (1); the output end of the fixed motor (3) is fixed at the end of a ball screw (4); the outer side of the ball screw (4) is threadedly connected to the bottom of the loading platform (6); the other side of the bottom of the loading platform (6) is slidably arranged on the outer side of a guide rod (5); the two ends of the guide rod (5) are fixed at the top of the fixed base (1); and one end of the ball screw (4) is rotatably arranged at an inner position of the fixed base (1).

3. A vehicle contour dimension measuring device according to claim 2, characterized in that: A plurality of groups of rollers (601) are fixed at the bottom of the loading platform (6), and a sliding structure is formed between the loading platform (6) and the interior of the fixed base (1) via a ball screw (4).

4. A vehicle contour dimension measuring device according to claim 1, characterized in that: A rotating gear (8) is rotatably arranged at the bottom of the loading platform (6), and a threaded rod (9) is fixed at the center of the rotating gear (8). The outer middle portion of the threaded rod (9) is rotatably arranged at the bottom of the sealing oil chamber (10). In addition, the outer side of the threaded rod (9) is threadedly connected to the inner side of the sealing oil push plate (11), and the sealing oil push plate (11) is slidably arranged inside the sealing oil chamber (10). The top side of the sealing oil chamber (10) is connected to the side limiting mechanism through a first delivery pipe (12).

5. A vehicle contour dimension measuring device according to claim 4, characterized in that: The side limiting mechanism comprises a fixed tube (13) connected to the middle position of the first delivery tube (12), the bottom position of the fixed tube (13) is fixed inside the top of the loading platform (6), two groups of push rods (14) are slidably arranged inside the fixed tube (13), the ends of the two groups of push rods (14) are connected by a return spring (15), and a side limiting plate (16) is fixed at one end of the push rod (14) away from the fixed tube (13), and the outer side of the side limiting plate (16) is slidably arranged on the top of the loading platform (6).

6. The vehicle contour dimension measuring device according to claim 1, characterized in that: The translation mechanism comprises a third delivery pipe (18), the outer end of the third delivery pipe (18) is fixed to a side surface of a movable slide plate (23), and the bottom of the movable slide plate (23) is slidably arranged inside the loading platform (6).

7. A vehicle contour dimension measuring device according to claim 6, characterized in that: The interior of the third delivery pipe (18) includes a transverse cylinder (1801) fixed at one end of the loading platform (6), and a transverse rod (1802) is slidably arranged inside the transverse cylinder (1801). The outer end of the transverse rod (1802) is fixed to one side of the movable slide plate (23), and the inner end position of the transverse rod (1802) is fixed to the head end of the connecting spring (1803), and the tail end of the connecting spring (1803) is fixed to the inner position of the transverse cylinder (1801).

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