A passenger car trailer hitch rigidity test device

Abstract

The application discloses a passenger car trailer hook rigidity test device, which comprises a double gantry, a single gantry, a loading mechanism, a movable fixed frame mechanism, a spring and a base, the upper end of the movable fixed frame mechanism is connected to the double gantry, the lower end of the movable fixed frame mechanism after left-right adjustment is fixedly connected to the base, the loading mechanism comprises a lifting plate, a connecting rod, a ball head bearing, an electric cylinder and a fixed clamp, the lifting plate is connected to the movable fixed frame mechanism, the rear end of the connecting rod is connected to the lifting plate, the front end of the connecting rod is movably connected to the electric cylinder, and a pressure sensor is arranged between the output end of the electric cylinder and the fixed clamp. By adopting the application, the test device can be quickly fixed, the rigidity test of the passenger car trailer hook can be performed, the accuracy of the device can be improved, the stability of the test device can be ensured, and the experimental efficiency and reliability are improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of vehicle test, and particularly relates to a passenger car tow hook rigidity test device. BACKGROUND

[0002] When a new vehicle model is developed or a new vehicle is produced, the static rigidity of each part on the vehicle body-in-white needs to be tested to observe the deformation of the parts under different loads, different directions of pressure and tension, and the maximum pressure and tension that can be borne. The tow hook of a vehicle is an emergency device that can be used to move to a repair shop or a safe area with the help of other tow trucks when the vehicle breaks down. During towing, the tow hook needs to bear a large tension, and the strength of the tow hook affects the safety of the towing vehicle and the towed vehicle. Therefore, the rigidity test of the tow hook fixing point of the new vehicle is needed. At present, there is no accurate position fixing device for tow hook rigidity test, and most devices can only randomly fix the test device for testing. Since the position change and stability of the test device during the loading process of the electric cylinder cannot be well guaranteed, it is difficult to analyze with the naked eye. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a passenger car tow hook rigidity test device that can effectively solve the problem of the prior art that the stability of the test device during the loading process of the electric cylinder cannot be guaranteed.

[0004] To solve the above technical problems, the technical scheme adopted by the present application is as follows:

[0005] A passenger car tow hook rigidity test device, comprising a double gantry, a single gantry, a loading mechanism, a movable fixing frame mechanism, a spring and a base, the double gantry and the single gantry are fixed on the base, the upper end of the movable fixing frame mechanism is adjustably connected to the double gantry, the lower end of the movable fixing frame mechanism after adjustment is fixedly connected to the base, the loading mechanism comprises a lifting plate, a connecting rod, a ball head bearing, an electric cylinder and a fixing clamp, the lifting plate is adjustably connected to the movable fixing frame mechanism, the rear end of the connecting rod is rotatably connected to the lifting plate, the front end of the connecting rod is movably connected to the electric cylinder through the ball head bearing, the fixing clamp is connected to the output end of the electric cylinder, a pressure sensor is arranged between the output end of the electric cylinder and the fixing clamp, the single gantry is located at the front end of the loading mechanism, the upper end of the spring is connected to the single gantry, and the lower end of the spring is connected to the front end of the electric cylinder.

[0006] As a preferred scheme of the present application, the double gantry is provided with a first sliding rail extending leftward and rightward, the movable fixing frame mechanism comprises a moving cabinet, a connecting frame and a roller, the connecting frame is fixed to an upper end of the moving cabinet, the roller is rotatably connected to the connecting frame, and the movable fixing frame mechanism is connected with the first sliding rail through the roller.

[0007] As a preferred scheme of the present application, the double gantry is provided with a scale in a horizontal direction.

[0008] As a preferred scheme of the present application, a front end surface of the moving cabinet is provided with a second sliding rail extending upward and downward, and the lifting plate is provided with a sliding block in sliding cooperation with the second sliding rail.

[0009] As a preferred scheme of the present application, the moving cabinet is provided with a scale in a vertical direction.

[0010] As a preferred scheme of the present application, a rear side of the moving cabinet is provided with a fixing seat, and the movable fixing frame mechanism is connected with the base through the fixing seat.

[0011] As a preferred scheme of the present application, the moving cabinet is provided with an adjusting bolt, the fixing seat comprises a horizontal plate, a vertical plate and an inner plate, the vertical plate is provided with an adjusting hole in cooperation with the adjusting bolt.

[0012] As a preferred scheme of the present application, the lifting plate is provided with a U-shaped pipe clamp, and the connecting rod is connected with the U-shaped pipe clamp through a rotating shaft.

[0013] As a preferred scheme of the present application, the single gantry comprises two vertical columns and a horizontal beam connected between the two vertical columns, the vertical column comprises a sleeve pipe and a telescopic pipe, and the telescopic pipe is adjustably connected to the sleeve pipe in an up-down direction.

[0014] As a preferred scheme of the present application, the horizontal beam of the single gantry is threadedly connected with a screw rod, and an upper end of the spring is connected with a lower end of the screw rod.

[0015] The passenger car trailer hook rigidity test device provided by the present application has the beneficial effects compared with the prior art, which are as follows:

[0016] Before the test, according to the position of the towing hook of the passenger car, the left and right positions of the movable fixed frame mechanism on the double gantry are adjusted, the up and down positions of the lifting plate on the movable fixed frame mechanism are adjusted, so that the loading mechanism can cooperate with the position of the towing hook of the passenger car, the position of the test device can be quickly adjusted and fixed, more different models of towing hooks of passenger cars can be adapted, and the practicability is high; during the test, the electric cylinder can load the towing hook of the passenger car, so that the towing hook is deformed, the deformation displacement is combined with the load value recorded by the pressure sensor, the stiffness value of the towing hook can be calculated, and since the lower end of the spring is connected with the front end of the electric cylinder, the spring plays a role of resetting the electric cylinder, so that the electric cylinder is in a horizontal state, the output of the electric cylinder can be guaranteed, and the accuracy of the device is improved. By adopting the present application, the test device can be quickly fixed and the stiffness test of the towing hook of the passenger car can be performed, the accuracy of the device can be improved, the stability of the test device can be guaranteed, and the experimental efficiency and reliability are improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below.

[0018] Figure 1 is a structural schematic view of a passenger car towing hook stiffness test device provided by the embodiment of the present application;

[0019] Figure 2 is a front view of a passenger car towing hook stiffness test device provided by the embodiment of the present application;

[0020] Figure 3 is a structural schematic view of a loading mechanism;

[0021] Figure 4 is a structural schematic view of another view direction of the loading mechanism;

[0022] Figure 5 is a structural schematic view of a movable fixed frame mechanism;

[0023] Figure 6 is a structural schematic view of another view direction of the movable fixed frame mechanism;

[0024] Figure 7 is a structural schematic view of a double gantry;

[0025] Figure 8 is a structural schematic view of a single gantry.

[0026] Markings in the drawings:

[0027] Double gantry 1; single gantry 2; loading mechanism 3; movable fixed frame mechanism 4; spring 5; base 6; lifting plate 7; connecting rod 8; ball head bearing 9; electric cylinder 10; fixed clamp 11; pressure sensor 12; lifting ring 13; first sliding rail 14; moving cabinet 15; connecting frame 16; roller 17; scale 18; second sliding rail 19; sliding block 20; fixed seat 21; adjusting bolt 22; cross plate 23; vertical plate 24; inner plate 25; adjusting hole 26; U-shaped pipe clamp 27; rotating shaft 28; stand 29; cross beam 30; sleeve pipe 31; telescopic pipe 32; screw rod 33. DETAILED DESCRIPTION

[0028] The specific embodiments of the present application will be further described in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0029] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. It should be understood that the terms "first", "second", etc. are used to describe various information in the present application, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, the "first" information can also be referred to as "second" information without departing from the scope of the present application, and similarly, the "second" information can also be referred to as "first" information.

[0030] As Figures 1 to 8As shown, the preferred embodiment of the present application provides a passenger car tow hook rigidity test device, which comprises a double gantry 1, a single gantry 2, a loading mechanism 3, a movable fixed frame mechanism 4, a spring 5 and a base 6, the double gantry 1 and the single gantry 2 are fixed on the base 6, the upper end of the movable fixed frame mechanism 4 is adjustably connected to the double gantry 1, the lower end of the movable fixed frame mechanism 4 after adjustment is fixedly connected to the base 6, the loading mechanism 3 comprises a lifting plate 7, a connecting rod 8, a ball head bearing 9, an electric cylinder 10 and a fixed clamp 11, the lifting plate 7 is adjustably connected to the movable fixed frame mechanism 4, the rear end of the connecting rod 8 is rotatably connected to the lifting plate 7, the front end of the connecting rod 8 is movably connected to the electric cylinder 10 through the ball head bearing 9, the fixed clamp 11 is connected to the output end of the electric cylinder 10, a pressure sensor 12 is arranged between the output end of the electric cylinder 10 and the fixed clamp 11, the single gantry 2 is located at the front end of the loading mechanism 3, the upper end of the spring 5 is connected to the single gantry 2, and the lower end of the spring 5 is connected to the front end of the electric cylinder 10. In this embodiment, a lifting ring 13 is arranged on the spring 5, and the lower end of the spring 5 is connected to the lifting ring 13.

[0031] Before the test, according to the position of the passenger car tow hook, the left and right positions of the movable fixed frame mechanism 4 on the double gantry 1 are adjusted, and the up and down positions of the lifting plate 7 on the movable fixed frame mechanism 4 are adjusted, so that the loading mechanism 3 can cooperate with the position of the passenger car tow hook, the position of the test device can be quickly adjusted and fixed, more different models of passenger car tow hooks can be adapted, and the practicability is high; during the test, the electric cylinder 10 can load the passenger car tow hook to make the tow hook deform, and the rigidity value of the tow hook can be calculated by combining the deformation displacement with the load value recorded by the pressure sensor 12, and at the same time, since the lower end of the spring 5 is connected to the front end of the electric cylinder 10, the spring 5 plays a role of resetting the electric cylinder 10, so that the electric cylinder 10 is in a horizontal state, the output of the electric cylinder 10 is guaranteed, and the accuracy of the device is improved. By using the present application, the test device can be quickly fixed and the rigidity test of the passenger car tow hook can be performed, the accuracy of the device can be improved, the stability of the test device can be guaranteed, and the experimental efficiency and reliability are improved.

[0032] For example, the double gantry 1 is provided with a first slide rail 14 extending left and right, the movable fixed frame mechanism 4 comprises a moving cabinet 15, a connecting frame 16 and a roller 17, the connecting frame 16 is fixed to the upper end of the moving cabinet 15, the roller 17 is rotatably connected to the connecting frame 16, and the movable fixed frame mechanism is connected to the first slide rail 14 through the roller 17. Thus, the left and right positions of the movable fixed frame mechanism on the double gantry 1 can be adjusted through the roller 17, manpower is saved, and work efficiency is improved.

[0033] Exemplarily, in order to facilitate the displacement of the movable fixing frame mechanism 4 and the loading mechanism 3, the double gantry 1 is provided with a scale 18 in the horizontal direction, and the moving cabinet 15 is provided with a scale 18 in the vertical direction.

[0034] Exemplarily, the front end face of the moving cabinet 15 is provided with a second sliding rail 19 extending upward and downward, and the lifting plate 7 is provided with a sliding block 20 in sliding cooperation with the second sliding rail 19.

[0035] Further, the second sliding rail 19 is provided as a T-shaped groove, and the sliding block 20 is provided as a T-shaped sliding block 20 in cooperation with the T-shaped groove.

[0036] Exemplarily, in order to facilitate fixing, the rear side of the moving cabinet 15 is provided with a fixing seat 21, and the movable fixing frame mechanism 4 is connected with the base 6 through the fixing seat 21.

[0037] Specifically, the moving cabinet 15 is provided with an adjusting bolt 22, the fixing seat 21 includes a horizontal plate 23, a vertical plate 24 and an inner plate 25, and the vertical plate 24 is provided with an adjusting hole 26 in cooperation with the adjusting bolt 22. Through such a design, the position of the fixing seat 21 can be adjusted according to the height of the movable fixing frame mechanism 4 and the height of the double gantry 1, so that the horizontal plate 23 is always lower than the bottom of the moving cabinet 15, preventing damage to the moving cabinet 15 during the movement of the movable fixing frame mechanism 4, and prolonging the service life of the device.

[0038] Exemplarily, in order to facilitate the connection between the lifting plate 7 and the connecting rod 8, the lifting plate 7 is provided with a U-shaped pipe clamp 27, and the connecting rod 8 is connected with the U-shaped pipe clamp 27 through a rotating shaft 28.

[0039] Exemplarily, the single gantry 2 includes two vertical columns 29 and a cross beam 30 connected between the two vertical columns 29, the vertical column 29 includes a sleeve pipe 31 and a telescopic pipe 32, the telescopic pipe 32 is adjustably connected to the sleeve pipe 31, and the cross beam 30 of the single gantry 2 is threadedly connected with a screw rod 33, and the upper end of the spring 5 is connected with the lower end of the screw rod 33. In this way, the height of the single gantry 2 can be adjusted according to the position of the passenger car towing hook, and the screw rod 33 plays a complementary role for the telescopic pipe 32, so that the height adjustment range of the single gantry 2 is wider, and the single gantry 2 can adapt to more different passenger car towing hooks, and has strong adaptability.

[0040] In specific implementation, the base 6 is provided with a plurality of T-shaped grooves, and the single gantry 2 and the double gantry 1 are connected with the T-shaped grooves through nuts.

[0041] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] The above is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and replacements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A passenger car trailer hitch rigidity test device characterized by, The utility model provides a kind of loading mechanism, including double portal frame, single portal frame, loading mechanism, movable fixed frame mechanism, spring and base, the double portal frame and the single portal frame are fixed on the base, the upper end of the movable fixed frame mechanism is connected on the double portal frame left and right adjustment, and the lower end of the movable fixed frame mechanism after left and right adjustment is fixedly connected with the base, the loading mechanism includes lifting plate, connecting rod, ball head bearing, electric cylinder and fixed clamp, the lifting plate is connected on the movable fixed frame mechanism up and down adjustment, the rear end of the connecting rod is rotatably connected on the lifting plate, the front end of the connecting rod is movably connected with the electric cylinder by the ball head bearing, the fixed clamp is connected on the output end of the electric cylinder, and pressure sensor is provided between the output end of the electric cylinder and the fixed clamp, the single portal frame is located at the front end of the loading mechanism, the upper end of the spring is connected with the single portal frame, and the lower end of the spring is connected with the front end of the electric cylinder. The single portal frame includes two columns and a crossbeam connected between the two columns, the column includes a sleeve pipe and a telescopic pipe, and the telescopic pipe is adjustably connected to the sleeve pipe in the up-down direction. A screw rod is threadedly connected to the crossbeam, and the upper end of the spring is connected to the lower end of the screw rod.

2. The passenger vehicle tow hook rigidity test device of claim 1, wherein The double portal frame is provided with a first slide rail extending left and right, the movable fixed frame mechanism includes a moving cabinet, a connecting frame and a roller, the connecting frame is fixed to the upper end of the moving cabinet, the roller is rotatably connected to the connecting frame, and the movable fixed frame mechanism is connected to the first slide rail through the roller.

3. The passenger vehicle tow hook rigidity test device of claim 1, wherein The double portal frame is provided with a scale in the horizontal direction.

4. The passenger vehicle tow hook rigidity test device of claim 2, wherein The front end surface of the moving cabinet is provided with a second slide rail extending up and down, and the lifting plate is provided with a sliding block slidingly fitted with the second slide rail.

5. The passenger vehicle tow hook rigidity test device of claim 4, wherein The moving cabinet is provided with a scale in the vertical direction.

6. The passenger vehicle tow hook rigidity test device of claim 2, wherein The rear side of the moving cabinet is provided with a fixing seat, and the movable fixed frame mechanism is connected to the base through the fixing seat.

7. A passenger vehicle tow hook rigidity test device according to claim 6, characterized in that, The moving cabinet is provided with an adjusting bolt, and the fixing seat includes a horizontal plate, a vertical plate and an inner plate, the vertical plate is provided with an adjusting hole matched with the adjusting bolt.

8. The passenger vehicle tow hook rigidity testing apparatus of claim 1, wherein The lifting plate is provided with a U-shaped pipe clamp, and the connecting rod is connected to the U-shaped pipe clamp through a rotating shaft.

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