Automobile split tail door durability test system

Abstract

The invention relates to the technical field of vehicles, and discloses an automobile split tail door durability test system which comprises a fixing frame, an auxiliary tail door driving device, a main tail door driving device and an unlocking device. The fixing frame is used for fixing a carriage. The auxiliary tail door driving device is arranged on the fixing frame, connected with the auxiliary tail door and used for driving the auxiliary tail door to be opened and closed relative to the compartment. The main tail door driving device is arranged on the fixing frame, connected with the main tail door and used for driving the main tail door to be opened and closed relative to the compartment. The unlocking device is arranged on the split tail door and used for unlocking the split tail door. According to the durability test system for the split tail door of the automobile, automatic action of the split tail door is achieved in the durability test of the split tail door, the requirement of the durability test of the split tail door of the automobile for manpower is reduced, and therefore the manpower cost and the test work intensity are effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and particularly to a durability test system for an automobile split tailgate. Background Art

[0002] In the field of automobile test technology, for the durability detection of an automobile split tailgate with a large opening angle (greater than 180°) and no limit mechanism, at present, laboratories rely on manual operation to test the split tailgate. The test accuracy is poor, the work intensity is high, the labor cost is high, and it is difficult to complete the high and low temperature environment test stage.

[0003] Therefore, there is an urgent need for a durability test system for an automobile split tailgate to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a durability test system for an automobile split tailgate, which realizes the automatic movement of the split tailgate in the durability test of the split tailgate and reduces the manpower requirement for the durability test of the automobile split tailgate.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A durability test system for an automobile split tailgate, the split tailgate includes a main tailgate and a sub-tailgate rotatably connected to the carriage, and includes a fixed frame, a sub-tailgate driving device, a main tailgate driving device and an unlocking device;

[0007] The fixed frame is used to fix the carriage;

[0008] The sub-tailgate driving device is arranged on the fixed frame and connected to the sub-tailgate, and is used to drive the sub-tailgate to open and close relative to the carriage;

[0009] The main tailgate driving device is arranged on the fixed frame and connected to the main tailgate, and is used to drive the main tailgate to open and close relative to the carriage;

[0010] The unlocking device is arranged on the split tailgate and is used to unlock the split tailgate.

[0011] As an improvement of the above technical solution, the sub-tailgate driving device includes a first driving component, a first swing rod and a first connecting rope;

[0012] The first driving component is fixedly arranged on the fixed frame;

[0013] One end of the first swing rod is connected to the first driving component, and the first driving component is used to drive the first swing rod to swing around a first axis, and the first axis is parallel to the height direction of the carriage;

[0014] One end of the first connecting rope is connected to the end of the first swing rod away from the first driving assembly, and the other end is connected to the secondary tailgate.

[0015] As an improvement to the above technical solution, a first abutting member is provided at the end of the first swing rod away from the first driving assembly. The first abutting member is used to abut against the secondary tailgate and drive the secondary tailgate to rotate towards the direction close to the carriage, and the first connecting rope is used to drive the secondary tailgate to rotate away from the carriage.

[0016] As an improvement to the above technical solution, the main tailgate driving device includes a second driving assembly, a second swing rod and a second connecting rope;

[0017] The second driving assembly is fixedly arranged on the fixing frame;

[0018] One end of the second swing rod is connected to the second driving assembly. The second driving assembly is used to drive the second swing rod to swing around a second axis, and the second axis is parallel to the height direction of the carriage;

[0019] One end of the second connecting rope is connected to the end of the second swing rod away from the second driving assembly, and the other end is connected to the main tailgate.

[0020] As an improvement to the above technical solution, a second abutting member is provided at the end of the second swing rod away from the second driving assembly. The second abutting member is used to abut against the main tailgate and drive the main tailgate to rotate towards the direction close to the carriage, and the second connecting rope is used to drive the main tailgate to rotate away from the carriage.

[0021] As an improvement to the above technical solution, a door closing device is further included. The door closing device is arranged on the fixing frame and is used to drive the main tailgate to be locked on the carriage.

[0022] As an improvement to the above technical solution, the door closing device includes a first air cylinder, a connecting plate and a second air cylinder;

[0023] The cylinder barrel of the first air cylinder is connected to the fixing frame, the piston rod of the first air cylinder is connected to the connecting plate, the cylinder barrel of the second air cylinder is connected to the connecting plate, and the piston rod of the second air cylinder is exposed on the side of the connecting plate facing the carriage;

[0024] The first air cylinder is used to drive the connecting plate to drive the second air cylinder to approach and move away from the carriage, and the second air cylinder is used to drive the main tailgate to be locked on the carriage.

[0025] As an improvement of the above technical solution, the door closing device further includes a third cylinder. The cylinder barrel of the third cylinder is connected to the connecting plate, and the piston rod of the third cylinder is exposed on the side of the connecting plate facing the carriage. The third cylinder can move with the connecting plate;

[0026] A positioning magnet is provided at the end of the piston rod of the third cylinder. The positioning magnet is used to adsorb the main tailgate to position the relative position between the main tailgate and the second cylinder.

[0027] As an improvement of the above technical solution, the cylinder barrel of the first cylinder is rotatably connected to the fixed frame, and the piston rod of the first cylinder is rotatably connected to the connecting plate;

[0028] One end of the cylinder barrel of the second cylinder is rotatably connected to the fixed frame, and the other end is fixedly connected to the connecting plate. The axis of the piston rod of the first cylinder and the axis of the piston rod of the second cylinder are arranged at an angle. The axis of the piston rod of the third cylinder is parallel to the axis of the piston rod of the second cylinder;

[0029] The rotation axis between the first cylinder and the fixed frame is the third axis, the rotation axis between the first cylinder and the connecting plate is the fourth axis, the rotation axis between the second cylinder and the fixed frame is the fifth axis. The third axis, the fourth axis and the fifth axis are parallel to each other. The first cylinder is used to drive the connecting plate to drive the second cylinder and the third cylinder to swing relative to the fixed frame around the fifth axis, so that the second cylinder and the third cylinder approach and move away from the carriage.

[0030] As an improvement of the above technical solution, a positioning device is further included. The positioning device includes a positioning cylinder arranged in the carriage. A first stop portion is provided on the piston rod of the positioning cylinder. The first stop portion has a first working position and a second working position. When the first stop portion is in the first working position, the first stop portion is exposed outside the carriage so that the main tailgate can abut against the first stop portion. When the first stop portion is in the second working position, the first stop portion is inside the carriage so that the main tailgate can be locked to the carriage.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0032] The durability test system for the split tailgate of an automobile according to the present invention unlocks the split tailgate through an unlocking device, drives the secondary tailgate to open and close relative to the carriage through a secondary tailgate driving device, and drives the main tailgate to open and close relative to the carriage through a main tailgate driving device, so as to realize the automatic movement of the split tailgate in the durability test of the split tailgate, reduce the manpower requirement for the durability test of the split tailgate of the automobile, effectively reduce the labor cost and the test work intensity, and facilitate the test in high and low temperature environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of the durability test system for the split tailgate of an automobile provided by an embodiment of the present invention Figure 1 ;

[0034] Figure 2 is Figure 1 an enlarged view of part A in

[0035] Figure 3 is a schematic structural diagram of the durability test system for the split tailgate of an automobile provided by an embodiment of the present invention Figure 2 ;

[0036] Figure 4 is a schematic structural diagram of the durability test system for the split tailgate of an automobile provided by an embodiment of the present invention Figure 3 ;

[0037] Figure 5 is Figure 4 an enlarged view of part B in

[0038] Figure 6 is a schematic diagram of a part of the durability test system for the split tailgate of an automobile provided by an embodiment of the present invention Figure 1 ;

[0039] Figure 7 is a schematic diagram of a part of the durability test system for the split tailgate of an automobile provided by an embodiment of the present invention Figure 2 。

[0040] In the figure:

[0041] 10, carriage; 20, split tailgate; 201, main tailgate; 202, secondary tailgate;

[0042] 1, fixing frame;

[0043] 2, secondary tailgate driving device;

[0044] 21, first driving assembly; 211, first motor; 212, first rotating shaft; 213, first coupling; 214, first bearing seat;

[0045] 22, first swing rod; 221, first abutting member;

[0046] 23. First connecting rope

[0047] 3. Main tailgate drive device

[0048] 31. Second drive assembly; 311. Second motor; 312. Second rotating shaft; 313. Second coupling; 314. Second bearing seat

[0049] 32. Second swing rod; 321. Second abutting member

[0050] 33. Second connecting rope

[0051] 4. Unlocking device

[0052] 41. First unlocking assembly; 411. Fourth cylinder; 412. First support seat

[0053] 42. Second unlocking assembly; 421. Fifth cylinder; 422. Second support seat

[0054] 5. Unlocking monitoring travel switch

[0055] 6. Door closing device

[0056] 61. First cylinder; 62. Connecting plate; 63. Second cylinder

[0057] 64. Third cylinder; 641. Positioning magnet

[0058] 7. Positioning device

[0059] 71. Positioning cylinder

[0060] 72. Third support seat

[0061] 8. Door closing monitoring travel switch Detailed implementation manners

[0062] The following combines the accompanying drawings and embodiments to further describe in detail the specific implementation manners of the present invention. The following embodiments are used to illustrate the present invention, but do not limit the scope of the present invention.

[0063] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0064] In the present invention, unless otherwise clearly specified or limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0065] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0066] As Figures 1 - 7 shown, this embodiment provides an automotive split tailgate durability test system for the durability test of the split tailgate 20. The split tailgate 20 includes a main tailgate 201 and a sub-tailgate 202 that are rotatably connected to the carriage 10.

[0067] The automotive split tailgate durability test system includes a fixing frame 1, a sub-tailgate driving device 2, a main tailgate driving device 3 and an unlocking device 4. The fixing frame 1 is used to fix the carriage 10. The sub-tailgate driving device 2 is arranged on the fixing frame 1 and is connected to the sub-tailgate 202 for driving the sub-tailgate to open and close relative to the carriage 10. The main tailgate driving device 3 is arranged on the fixing frame 1 and is connected to the main tailgate 201 for driving the main tailgate 201 to open and close relative to the carriage 10. The unlocking device 4 is arranged on the split tailgate 20 for unlocking the split tailgate 20.

[0068] The automotive split tailgate durability test system provided in this embodiment unlocks the split tailgate 20 through the unlocking device 4, drives the sub-tailgate 202 to open and close relative to the carriage 10 through the sub-tailgate driving device 2, and drives the main tailgate 201 to open and close relative to the carriage 10 through the main tailgate driving device 3, so as to realize the automatic action of the split tailgate 20 in the durability test of the split tailgate 20, reduce the manpower requirement for the durability test of the automotive split tailgate 20, thus effectively reducing the labor cost and the intensity of the test work, and being convenient for conducting tests in high and low temperature environments.

[0069] Optionally, as Figure 1 、 Figure 3 and Figure 4As shown, the secondary tailgate driving device 2 includes a first driving assembly 21, a first swing rod 22, and a first connecting rope 23. The first driving assembly 21 is fixedly arranged on the fixing frame 1. One end of the first swing rod 22 is connected to the first driving assembly 21. The first driving assembly 21 is used to drive the first swing rod 22 to swing around a first axis, and the first axis is parallel to the height direction of the carriage 10. One end of the first connecting rope 23 is connected to the end of the first swing rod 22 away from the first driving assembly 21, and the other end is connected to the secondary tailgate 202.

[0070] Further, as Figure 1 , Figure 3 and Figure 4 shown, a first abutting member 221 is arranged at the end of the first swing rod 22 away from the first driving assembly 21. The first abutting member 221 is used to abut against the secondary tailgate 202 and drive the secondary tailgate 202 to rotate towards the direction close to the carriage 10, and the first connecting rope 23 is used to drive the secondary tailgate 202 to rotate towards the direction away from the carriage 10.

[0071] Further, as Figure 1 and Figure 2 shown, the first driving assembly 21 includes a first motor 211, a first rotating shaft 212, a first coupling 213, and a first bearing seat 214. The first motor 211 is fixedly arranged on the fixing frame 1. The output shaft of the first motor 211 is connected to the first rotating shaft 212 through the first coupling 213. The end of the first rotating shaft 212 away from the first coupling 213 is rotatably connected to the first bearing seat 214, and the first swing rod 22 is connected to the first rotating shaft 212. The first motor 211 drives the first rotating shaft 212 to rotate through the first coupling 213, and the first rotating shaft 212 drives the first swing rod 22 to swing. The first bearing seat 214 plays a role in supporting the first rotating shaft 212. One end of the first rotating shaft 212 is supported by the first bearing seat 214, and the other end is supported by the first coupling 213. In this embodiment, one end of the first swing rod 22 is sleeved on the first rotating shaft 212 and fixedly connected to the first rotating shaft 212 through bolts.

[0072] Optionally, as Figure 1 , Figure 3 and Figure 4 shown, the main tailgate driving device 3 includes a second driving assembly 31, a second swing rod 32, and a second connecting rope 33. The second driving assembly 31 is fixedly arranged on the fixing frame 1. One end of the second swing rod 32 is connected to the second driving assembly 31. The second driving assembly 31 is used to drive the second swing rod 32 to swing around a second axis, and the second axis is parallel to the height direction of the carriage 10. One end of the second connecting rope 33 is connected to the end of the second swing rod 32 away from the second driving assembly 31, and the other end is connected to the main tailgate 201.

[0073] Further, as Figure 1 andFigure 4 As shown, at one end of the second swing rod 32 away from the second drive assembly 31, a second abutting member 321 is provided. The second abutting member 321 is used to abut against the main tailgate 201 and drive the main tailgate 201 to rotate towards the direction close to the carriage 10. The second connecting rope 33 is used to drive the main tailgate 201 to rotate away from the carriage 10.

[0074] Further, as Figure 4 and Figure 5 shown, the second drive assembly 31 includes a second motor 311, a second rotating shaft 312, a second coupling 313 and a second bearing block 314. The second motor 311 is fixedly arranged on the fixed frame 1. The output shaft of the second motor 311 is connected to the second rotating shaft 312 through the second coupling 313. One end of the second rotating shaft 312 away from the second coupling 313 is rotatably connected to the second bearing block 314, and the second swing rod 32 is connected to the rotating shaft.

[0075] In this embodiment, both the first motor 211 and the second motor 311 are stepper motors, so that the opening and closing stroke and angle of the main tailgate 201 and the sub-tailgate 202 can be accurately controlled to meet the test requirements. And using the stepper motor as the driving device also makes the transmission structure of the sub-tailgate driving device 2 and the main tailgate driving device 3 simpler and more reliable.

[0076] Those skilled in the art can understand that for the main tailgate 201 and the sub-tailgate 202 that can be opened and closed at a large angle, during the opening and closing process, the main tailgate 201 and the carriage 10, and the sub-tailgate 202 and the carriage 10 do not rotate around a fixed axis. Therefore, a rigid connection is not adopted between the first swing rod 22 and the sub-tailgate 202, and between the second swing rod 32 and the main tailgate 201 to meet the driving requirements for opening and closing the sub-tailgate 202 and the main tailgate 201. The axes of the first rotating shaft 212 and the second rotating shaft 312 in this embodiment are both along the height direction of the carriage 10. The first rotating shaft 212 is close to the connection between the sub-tailgate 202 and the carriage 10 in the horizontal direction, and the second rotating shaft 312 is close to the connection between the main tailgate 201 and the carriage 10 in the horizontal direction.

[0077] Optionally, as Figure 1 and Figure 3 shown, the durability test system for the split tailgate of the vehicle in this embodiment further includes an unlocking monitoring travel switch 5. The unlocking monitoring travel switch 5 is arranged on the bottom plate inside the carriage 10, and judges whether the unlocking of the split tailgate 20 is completed by monitoring the distance between the sub-tailgate 202 and the unlocking monitoring travel switch 5.

[0078] In order to ensure that the compartment 10 has a good sealing effect after the split tailgate 20 is closed, sealing strips are usually provided at the relative positions of the main tailgate 201 and the sub-tailgate 202. Due to the presence of the sealing strips, after the sub-tailgate 202 is closed, a relatively large closing force is required to close the main tailgate 201 in place, that is, to lock it on the compartment 10.

[0079] As Figure 1 and Figure 3 shown, in order to ensure that the main tailgate 201 can be closed in place, the automotive split tailgate durability test system in this embodiment further includes a closing device 6. The closing device 6 is arranged on the fixing frame 1 and is used to drive the main tailgate 201 to be locked on the compartment 10.

[0080] Optionally, as Figure 1 , Figure 3 , Figure 6 and Figure 7 shown, the closing device 6 includes a first cylinder 61, a connecting plate 62 and a second cylinder 63. The cylinder barrel of the first cylinder 61 is connected to the fixing frame 1, the piston rod of the first cylinder 61 is connected to the connecting plate 62, the cylinder barrel of the second cylinder 63 is connected to the connecting plate 62, and the piston rod of the second cylinder 63 is exposed on the side of the connecting plate 62 facing the compartment 10. The first cylinder 61 is used to drive the connecting plate 62 to drive the second cylinder 63 to approach and move away from the compartment 10, and the second cylinder 63 is used to drive the main tailgate 201 to be locked on the compartment 10.

[0081] Furthermore, as Figure 1 , Figure 3 , Figure 6 and Figure 7 shown, the closing device 6 further includes a third cylinder 64. The cylinder barrel of the third cylinder 64 is connected to the connecting plate 62, and the piston rod of the third cylinder 64 is exposed on the side of the connecting plate 62 facing the compartment 10. The third cylinder 64 can move with the connecting plate 62. A positioning magnet 641 is provided at the end of the piston rod of the third cylinder 64. The positioning magnet 641 is used to adsorb the main tailgate 201 to position the relative position between the main tailgate 201 and the second cylinder 63.

[0082] Furthermore, as Figure 1 , Figure 3 , Figure 6 and Figure 7As shown, the cylinder barrel of the first cylinder 61 is rotatably connected to the fixed frame 1, and the piston rod of the first cylinder 61 is rotatably connected to the connecting plate 62. One end of the cylinder barrel of the second cylinder 63 is rotatably connected to the fixed frame 1, and the other end of the cylinder barrel of the second cylinder 63 is fixedly connected to the connecting plate 62. The axis of the piston rod of the first cylinder 61 and the axis of the piston rod of the second cylinder 63 are arranged at an angle. The axis of the piston rod of the third cylinder 64 is parallel to the axis of the piston rod of the second cylinder 63. The rotation axis between the first cylinder 61 and the fixed frame 1 is the third axis, the rotation axis between the first cylinder 61 and the connecting plate 62 is the fourth axis, the rotation axis between the second cylinder 63 and the fixed frame 1 is the fifth axis, and the third axis, the fourth axis, and the fifth axis are parallel to each other. The first cylinder 61 is used to drive the connecting plate 62 to drive the second cylinder 63 and the third cylinder 64 to swing relative to the fixed frame 1 around the fifth axis, so that the second cylinder 63 and the third cylinder 64 approach and move away from the carriage 10.

[0083] Optionally, as Figure 1 and Figure 3 shown, the durability test system for the split tailgate of the vehicle in this embodiment further includes a positioning device 7. The positioning device 7 includes a positioning cylinder 71 arranged in the carriage 10. A first stop portion is provided on the piston rod of the positioning cylinder 71. The first stop portion has a first working position and a second working position. When the first stop portion is in the first working position, the first stop portion is exposed outside the carriage 10 so that the main tailgate 201 can abut against the first stop portion. When the first stop portion is in the second working position, the first stop portion is located inside the carriage 10 so that the main tailgate 201 can be locked to the carriage 10. Before the closing action of the main tailgate 201, the piston rod of the positioning cylinder 71 extends, so that the first stop portion moves from the second working position to the first working position, and then the closing action of the main tailgate 201 is performed until the main tailgate 201 abuts against the first stop portion. At this time, the main tailgate 201 is still a certain distance away from being completely closed. Immediately afterwards,

[0084] Furthermore, as Figure 1 and Figure 3 shown, the positioning device 7 in this embodiment further includes a third support seat 72 fixedly arranged in the carriage 10. The positioning cylinder 71 is detachably installed on the top of the third support seat 72, and the axial direction of the piston rod of the positioning cylinder 71 is along the length direction of the carriage 10, that is, the depth direction of the carriage 10.

[0085] Optionally, as Figure 1 and Figure 3 ​As shown, the durability test system for the split tailgate of the vehicle in this embodiment further includes a closing monitoring travel switch 8. The closing monitoring travel switch 8 is arranged on the bottom plate inside the carriage 10. By monitoring the distance between the main tailgate 201 and the closing monitoring travel switch 8, it is determined whether the main tailgate 201 is in place when closing, that is, whether the main tailgate 201 is locked on the carriage 10.

[0086] The travel switches used for the unlocking monitoring travel switch 5 and the closing monitoring travel switch 8 are common devices in the art, and their specific structures and working principles will not be elaborated.

[0087] Optionally, as Figure 1 and Figure 3 shown, the unlocking device 4 includes a first unlocking component 41 and / or a second unlocking component 42. The first unlocking component 41 is arranged inside the secondary tailgate 202 and is used to drive the interior opening handle on the secondary tailgate 202 to unlock the split tailgate 20. The second unlocking component 42 is arranged outside the main tailgate 201 and is used to drive the exterior opening handle on the main tailgate 201 to unlock the split tailgate 20. Those skilled in the art can understand that the interior opening handle inside the secondary tailgate 202 and the exterior opening handle outside the main tailgate 201 can both independently unlock the split tailgate 20. Preferably, in this embodiment, the unlocking device 4 includes a first unlocking component 41 and a second unlocking component 42. During the durability test of the split tailgate 20, it can be selected to unlock the split tailgate 20 by pushing the interior opening handle inside the secondary tailgate 202 through the first unlocking component 41 as needed, or to unlock the split tailgate 20 by pulling the exterior opening handle outside the main tailgate 201 through the second unlocking component 42.

[0088] Furthermore, as Figure 1 and Figure 3 shown, the first unlocking component 41 includes a fourth cylinder 411 and a first support seat 412. The first support seat 412 is fixedly arranged inside the secondary tailgate 202. The cylinder barrel of the fourth cylinder 411 is fixedly arranged on the first support seat 412, and the piston rod of the fourth cylinder 411 is connected to the interior opening handle. The second unlocking component 4 includes a fifth cylinder 421 and a second support seat 422. The second support seat 422 is fixedly arranged outside the main tailgate 201. The cylinder barrel of the fifth cylinder 421 is fixedly arranged on the second support seat 422, and the piston rod of the fifth cylinder 421 is connected to the exterior opening handle.

[0089] The working process of the present invention is as follows:

[0090] 1. The fourth cylinder 411 extends or the fifth cylinder 421 retracts to drive the interior opening handle or the exterior opening handle to unlock the split tailgate 20, and the unlocking monitoring travel switch 5 monitors whether the split tailgate 20 is successfully unlocked.

[0091] 2. The first motor 211 rotates clockwise, driving the secondary tailgate 202 to open through the first swing rod 22 and the first connecting rope 23. The second motor 311 rotates counterclockwise, driving the main tailgate 201 to open through the second swing rod 32 and the second connecting rope 33.

[0092] 3. The first motor 211 rotates counterclockwise, driving the secondary tailgate 202 to close through the first swing rod 22 and the first abutting member 221.

[0093] 4. The positioning cylinder 71 extends, moving the first stop portion from the second working position to the first working position, predetermining the closing force application position of the main tailgate 201.

[0094] 5. The second motor 311 rotates clockwise, driving the main tailgate 201 to the closing force application position (i.e., the position where the main tailgate 201 abuts against the first stop portion) through the second swing rod 32 and the second abutting member 321.

[0095] 6. The first cylinder 61 extends, pushing the second cylinder 63 and the third cylinder 64 to the closing position.

[0096] 7. The third cylinder 64 extends, completely positioning the main tailgate 201 through the positioning magnet 641 on its piston rod.

[0097] 8. The piston rod of the positioning cylinder 71 retracts, moving the first stop portion from the first working position to the second working position, leaving a closing space for the main tailgate 201 to avoid interference.

[0098] 9. The second cylinder 63 extends, pushing the main tailgate 201 to close at a preset closing speed.

[0099] 10. The closing monitoring travel switch 8 monitors whether the main tailgate 201 is closed in place.

[0100] 11. The first cylinder 61 retracts, leaving a reserved space for the opening of the main tailgate 201 to avoid interference, and then repeating the above steps.

[0101] During the entire test process, the opening and closing speeds of the main tailgate 201 and the secondary tailgate 202 are monitored at all times through the speed sensor group.

[0102] In summary, the embodiment of the present invention provides an automobile split tailgate durability test system, which realizes the automatic operation of the split tailgate 20 in the durability test of the split tailgate 20. Each moving part is controlled by a PLC controller, with strong reliability, reducing the manpower requirement for the durability test of the automobile split tailgate 20, thereby effectively reducing the labor cost and the intensity of the test work. Moreover, compared with manual operation, the action precision of driving the main tailgate 201 and the sub-tailgate 202 by the automobile split tailgate durability test system is higher. The overall structure of the automobile split tailgate durability test system is simple, with strong practicability and convenient maintenance. The unlocking and closing processes are monitored by the unlocking monitoring travel switch 5 and the closing monitoring travel switch 8, and an alarm is given when unlocking and closing fail, improving the reliability of the system.

[0103] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present invention, several improvements and replacements can still be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A durability test system for a split tailgate of an automobile. The split tailgate (20) includes a main tailgate (201) and a sub-tailgate (202) rotatably connected to a carriage (10), and is characterized in that, It includes a fixed frame (1), a secondary tailgate driving device (2), a main tailgate driving device (3), and an unlocking device (4); The fixed frame (1) is used to fix the carriage (10); The secondary tailgate driving device (2) is arranged on the fixed frame (1) and is connected to the secondary tailgate (202), and is used to drive the secondary tailgate to open and close relative to the carriage (10); The main tailgate driving device (3) is arranged on the fixed frame (1) and is connected to the main tailgate (201), and is used to drive the main tailgate (201) to open and close relative to the carriage (10); The unlocking device (4) is arranged on the split tailgate (20), and is used to unlock the split tailgate (20).

2. The durability test system for the split tailgate of an automobile according to claim 1, wherein The secondary tailgate driving device (2) includes a first driving assembly (21), a first swing rod (22), and a first connecting rope (23); The first driving assembly (21) is fixedly arranged on the fixed frame (1); One end of the first swing rod (22) is connected to the first driving assembly (21), and the first driving assembly (21) is used to drive the first swing rod (22) to swing around a first axis, and the first axis is parallel to the height direction of the carriage (10); One end of the first connecting rope (23) is connected to the end of the first swing rod (22) away from the first driving assembly (21), and the other end is connected to the secondary tailgate (202).

3. The durability test system for the split tailgate of an automobile according to claim 2, wherein, A first abutting member (221) is arranged at the end of the first swing rod (22) away from the first driving assembly (21), and the first abutting member (221) is used to abut against the secondary tailgate (22) and drive the secondary tailgate (22) to rotate towards the direction close to the carriage (10), and the first connecting rope (23) is used to drive the secondary tailgate (22) to rotate towards the direction away from the carriage (10).

4. The durability test system for the split tailgate of an automobile according to claim 1, characterized in that, The main tailgate driving device (3) includes a second driving assembly (31), a second swing rod (32), and a second connecting rope (33); The second driving assembly (31) is fixedly arranged on the fixed frame (1); One end of the second swing rod (32) is connected to the second driving assembly (31), and the second driving assembly (31) is used to drive the second swing rod (32) to swing around a second axis, and the second axis is parallel to the height direction of the carriage (10); One end of the second connecting rope (33) is connected to the end of the second swing rod (32) away from the second driving assembly (31), and the other end is connected to the main tailgate (201).

5. The durability test system for the split tailgate of an automobile according to claim 4, characterized in that, A second abutting member (321) is arranged at the end of the second swing rod (32) away from the second driving assembly (31), and the second abutting member (321) is used to abut against the main tailgate (201) and drive the main tailgate (201) to rotate towards the direction close to the carriage (10), and the second connecting rope (33) is used to drive the main tailgate (201) to rotate towards the direction away from the carriage (10).

6. The durability test system for the split tailgate of an automobile according to any one of claims 1-5, characterized in that, It further includes a door closing device (6) which is arranged on the fixed frame (1) and is used to drive the main tailgate (201) to be locked on the carriage (10).

7. The durability test system for the split tailgate of an automobile according to claim 6, characterized in that The door closing device (6) includes a first cylinder (61), a connecting plate (62) and a second cylinder (63); The cylinder barrel of the first cylinder (61) is connected to the fixed frame (1), the piston rod of the first cylinder (61) is connected to the connecting plate (62), the cylinder barrel of the second cylinder (63) is connected to the connecting plate (62), and the piston rod of the second cylinder (63) is exposed on the side of the connecting plate (62) facing the carriage (10); The first cylinder (61) is used to drive the connecting plate (62) to drive the second cylinder (63) to approach and move away from the carriage (10), and the second cylinder (63) is used to drive the main tailgate (201) to be locked on the carriage (10).

8. The durability test system for the split tailgate of an automobile according to claim 7, characterized in that, The door closing device (6) further includes a third cylinder (64), the cylinder barrel of the third cylinder (64) is connected to the connecting plate (62), and the piston rod of the third cylinder (64) is exposed on the side of the connecting plate (62) facing the carriage (10), and the third cylinder (64) can move along with the connecting plate (62); A positioning magnet (641) is arranged at the end of the piston rod of the third cylinder (64), and the positioning magnet (641) is used to adsorb the main tailgate (201) to position the relative position between the main tailgate (201) and the second cylinder (63).

9. The durability test system for the split tailgate of an automobile according to claim 8, characterized in that, The cylinder barrel of the first cylinder (61) is rotatably connected to the fixed frame (1), and the piston rod of the first cylinder (61) is rotatably connected to the connecting plate (62); One end of the cylinder barrel of the second cylinder (63) is rotatably connected to the fixed frame (1), and the other end is fixedly connected to the connecting plate (62). The axis of the piston rod of the first cylinder (61) and the axis of the piston rod of the second cylinder (63) are arranged at an angle. The axis of the piston rod of the third cylinder (64) is parallel to the axis of the piston rod of the second cylinder (63); The rotation axis between the first cylinder (61) and the fixed frame (1) is the third axis, the rotation axis between the first cylinder (61) and the connecting plate (62) is the fourth axis, the rotation axis between the second cylinder (63) and the fixed frame (1) is the fifth axis. The third axis, the fourth axis and the fifth axis are parallel to each other. The first cylinder (61) is used to drive the connecting plate (62) to drive the second cylinder (63) and the third cylinder (64) to swing around the fifth axis relative to the fixed frame (1) so that the second cylinder (63) and the third cylinder (64) approach and move away from the carriage (10).

10. The automobile tailgate durability test system according to claim 8, characterized in that: It further includes a positioning device (7). The positioning device (7) includes a positioning cylinder (71) disposed inside the carriage (10). A first stop portion is provided on the piston rod of the positioning cylinder (71). The first stop portion has a first working position and a second working position. When the first stop portion is located at the first working position, the first stop portion is exposed outside the carriage (10) so that the main tailgate (201) can abut against the first stop portion. When the first stop portion is located at the second working position, the first stop portion is located inside the carriage (10) so that the main tailgate (201) can be locked to the carriage (10).

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