A fuel tank cap ratchet and pawl performance testing device and method

Abstract

The invention discloses a performance testing device for ratchet teeth and pawls of a ratchet wheel in a fuel tank cap, comprising a base, a control cabinet arranged on the base, a durability testing mechanism and a torque testing mechanism arranged on the front side of the control cabinet, an operation display arranged on the control cabinet for controlling the durability testing mechanism and the torque testing mechanism and displaying data, and a positioning chuck tooling arranged on the base for fixing the fuel tank cap to be tested, the durability testing mechanism and the torque testing mechanism are both provided with a turntable tooling, the fuel tank cap to be tested fixed on the positioning chuck tooling is driven to rotate by the turntable tooling, and a rotation test is performed by the durability testing mechanism and the torque testing mechanism is respectively used to test the durability and torque of the ratchet teeth and pawls of the ratchet wheels, so as to test the durability and torque of the ratchet teeth and pawls of the fuel tank cap, thereby solving the problem that the service life and locking degree of the fuel tank cap cannot be measured, and the structure is simple and the operation is easy.

Description

Technical Field

[0001] The invention relates to the technical field of fuel tank cap detection equipment, and in particular to a device and method for testing the performance of ratchet teeth and pawls of a ratchet wheel in a fuel tank cap. Background Art

[0002] The fuel tank cap of a car generally contains a combination structure of ratchet teeth and pawls for judging whether it is tightened. When the ratchet teeth and pawls jump, it is in a tightened state. Therefore, the cooperation of the ratchet teeth and pawls can enable the operator to accurately know whether the fuel tank cap is tightened in place. However, the durability and torque of the ratchet teeth and pawls inside the existing fuel tank cap cannot be tested, resulting in the inability to test the service life of the ratchet teeth and pawls inside the newly developed fuel tank caps of different materials, shapes and structures, and the inability to judge the subsequent maintenance. At the same time, it is also impossible to test the torque of the ratchet teeth and pawls under this structure in the early stage of new product styles, resulting in that when the torque between the two is too small, the fuel tank cap is not actually completely locked on the fuel tank port, and there will be problems of oil and gas leakage. When the torque is too large, it is easy to cause the user to use more force when operating, which is very poor for the user's operating experience. Therefore, a device that can test the durability and torque of the ratchet teeth and pawls inside the fuel tank cap in the research and development stage is needed. Summary of the invention

[0003] In order to solve certain technical problems existing in the prior art, one of the purposes of the present application is to provide a performance testing device for the ratchet teeth and pawl of the ratchet wheel in the fuel tank cap, which can test the durability and torque of the ratchet teeth and pawl of the fuel tank cap, thereby solving the problem that the service life and locking degree of the fuel tank cap cannot be measured, and has a simple structure and is easy to operate.

[0004] The second purpose of the present application is to provide a method for testing the performance of the ratchet teeth and pawl of the ratchet wheel inside the fuel tank cap, which can effectively test the durability and torque size of the ratchet teeth and pawl of the ratchet wheel inside the fuel tank cap, thereby facilitating the adjustment of the structure, shape and size of the ratchet teeth and pawl of the ratchet wheel inside the fuel tank cap during the research and development process.

[0005] In order to solve the above existing technical problems, one of the purposes of this application is achieved by adopting the following technical solution:

[0006] A device for testing the performance of ratchet teeth and pawls of ratchets in a fuel tank cap, comprising a base, a control cabinet arranged on the base, a durability testing mechanism and a torque testing mechanism arranged on the front side of the control cabinet, an operation display arranged on the control cabinet for controlling the durability testing mechanism and the torque testing mechanism and displaying data, and a positioning chuck fixture arranged on the base for fixing the fuel tank cap to be tested, the durability testing mechanism and the torque testing mechanism are each provided with a turntable fixture, the fuel tank cap to be tested fixed on the positioning chuck fixture is driven to rotate by the turntable fixture, the durability of the ratchet teeth and pawls in the fuel tank cap to be tested is rotationally tested by the durability testing mechanism, and the torque of the ratchet teeth and pawls in the fuel tank cap to be tested is rotationally tested by the torque testing mechanism.

[0007] Preferably, a switching mechanism is further provided on the control cabinet, and the position of the turntable fixture on the durability testing mechanism and the torque testing mechanism relative to the positioning chuck fixture is laterally moved by the switching mechanism.

[0008] Preferably, the switching mechanism includes a slide rail laterally arranged on the control cabinet, a slide seat slidably arranged on the slide rail, and a horizontal cylinder arranged on one side of the slide seat. The durability testing mechanism and the torque testing mechanism are both arranged on the slide seat, and the slide seat slides laterally through the horizontal cylinder.

[0009] Preferably, the durability testing mechanism includes a first lifting mechanism disposed on the slide seat, a first motor disposed on the first lifting mechanism, and the turntable tooling is disposed on a rotating shaft of the first motor.

[0010] Preferably, the torque testing mechanism includes a second lifting mechanism arranged on the slide, a second motor arranged on the second lifting mechanism, and a torque sensor arranged on the rotating shaft of the second motor, and the turntable tooling is controlled to rotate by the second motor.

[0011] Preferably, the first lifting mechanism and the second lifting mechanism each include two vertically arranged guide rods, a lifting seat sleeved on the guide rods, and a driver arranged on the slide seat for sliding the lifting seat up and down, and the first motor and the second motor are both installed on the lifting seat.

[0012] Preferably, the driver adopts a cylinder structure, and the piston rod of the driver is connected to the lifting seat.

[0013] Preferably, a linkage shaft is provided between the turntable tooling and the first motor.

[0014] Preferably, the turntable tooling adopts a detachable threaded connection.

[0015] The second purpose of this application is achieved by the following technical solution:

[0016] A method for testing the performance of ratchet teeth and pawls of a ratchet wheel in a fuel tank cap comprises a device for testing the performance of ratchet teeth and pawls of a ratchet wheel in a fuel tank cap. The steps of testing the durability of ratchet teeth and pawls of a ratchet wheel by using the device for testing the performance of ratchet teeth and pawls of a ratchet wheel in a fuel tank cap comprise:

[0017] A1. Install the positioning chuck tooling onto the base and fix it;

[0018] A2. Align the outer ratchet of the fuel tank cap turntable with the inner ratchet of the positioning chuck tooling, and fix the turntable;

[0019] A3. Setting the number of rotations of the first motor and the number of tooth jumps of the ratchet teeth and pawls of the ratchet wheel through the operation display;

[0020] A4. Start the durability test procedure, switch the durability test mechanism to the position above the positioning chuck fixture through the horizontal cylinder, then control the turntable fixture to descend through the first lifting mechanism to clamp the fuel tank cap turntable pawl, and then start the first motor to perform the test;

[0021] A5. After the test is completed, take out the fuel tank cap turntable to be tested and check whether the ratchet teeth and pawls of the ratchet wheel are broken;

[0022] A6. Repeat steps A3 to A5 until the ratchet teeth and pawls of the ratchet wheel in the fuel tank cap turntable to be tested are broken.

[0023] A method for testing the performance of ratchet teeth and pawls of a ratchet wheel in a fuel tank cap comprises a device for testing the performance of ratchet teeth and pawls of a ratchet wheel in a fuel tank cap. The steps of testing the torque of ratchet teeth and pawls of a ratchet wheel by using the device for testing the performance of ratchet teeth and pawls of a ratchet wheel in a fuel tank cap comprise:

[0024] B1. Install the positioning chuck tooling onto the base and fix it;

[0025] B2. Align the outer ratchet of the fuel tank cap turntable with the inner ratchet of the positioning chuck tooling, and fix the turntable;

[0026] B3, setting the rotation angle of the second motor and the number of tooth jumps of the ratchet teeth and pawls of the ratchet wheel through the operation display;

[0027] B2. Start the torque detection operation procedure, move the torque test mechanism to the position above the positioning chuck fixture through the horizontal cylinder, then control the turntable fixture to descend through the second lifting mechanism to clamp the fuel tank cap turntable pawl, then start the second motor for testing, and record the torque detection value of each tooth;

[0028] B3. After the test is completed, take out the fuel tank cap turntable to be tested.

[0029] Preferably, the step of testing the ratchet teeth and pawl of the ratchet wheel by the ratchet teeth and pawl performance testing device in the fuel tank cap comprises: |

[0030] S1, installing the positioning chuck tooling on the base and fixing it;

[0031] S2, aligning the outer ratchet of the fuel tank cap turntable with the inner ratchet of the positioning chuck tooling, and fixing the turntable;

[0032] S3, respectively setting the detection parameters of durability and torque through the operation display, wherein the detection parameters of durability include the number of rotations of the first motor and the number of tooth jumps of the ratchet teeth and the pawl; the detection parameters of torque include the rotation angle of the second motor and the number of tooth jumps of the ratchet teeth and the pawl;

[0033] S4, starting the detection operation procedure, switching the torque test mechanism to the position directly above the positioning chuck fixture by the horizontal cylinder, then controlling the turntable fixture to descend by the second lifting mechanism to clamp the fuel tank cap turntable pawl, then starting the second motor for testing, and recording the torque detection value of each tooth;

[0034] B5. After the torque test is completed, the torque test mechanism is reset, and then the durability test mechanism is switched to just above the positioning chuck fixture through the horizontal cylinder, and then the durability test of steps A4 to A6 is performed.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] When testing the fuel tank cap, the durability test mechanism and the torque test mechanism can respectively perform a basic analysis on the durability of the ratchet teeth or pawls in the fuel tank cap, so that the R&D personnel can make timely adjustments to the ratchet teeth and pawls in the fuel tank cap according to the corresponding analysis data, so that the ratchet teeth and pawls in the fuel tank cap put into production can meet the service life requirements, and at the same time, the torque can be tested to avoid the problem that the ratchet teeth and pawls in the fuel tank cap do not meet the service life requirements or the torque required for tooth selection is large due to design defects, so that the production cost of the fuel tank cap is lower, the structure is more reasonable, and the operation experience is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of the present invention;

[0038] Figure 2 It is a schematic diagram of the disassembled state of the turntable tooling, the middle turntable tooling and the positioning chuck tooling of the present invention;

[0039] In the figure: 1. base; 2. torque sensor; 3. control cabinet; 4. second motor; 5. horizontal cylinder; 6. guide rod; 7. torque test mechanism; 8. slide rail; 9. slide seat; 10. second lifting mechanism; 11. driver; 12. switching mechanism; 13. operation display; 14. first motor; 15. durability test mechanism; 16. first lifting mechanism; 17. lifting seat; 18. turntable tooling; 19. positioning chuck tooling; 20. linkage shaft. DETAILED DESCRIPTION

[0040] Below, the present application is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0041] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0042] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0043] Embodiment 1:

[0044] like Figure 1 and Figure 2As shown, a device for testing the performance of ratchet teeth and pawls of ratchets in a fuel tank cap comprises a base 1, a control cabinet 3 arranged on the base 1, a durability testing mechanism 15 and a torque testing mechanism 7 arranged on the front side of the control cabinet 3, an operation display 13 arranged on the control cabinet 3 for controlling the durability testing mechanism 15 and the torque testing mechanism 7 and displaying data, and a positioning chuck fixture 19 arranged on the base 1 for fixing the fuel tank cap to be tested, the durability testing mechanism 15 and the torque testing mechanism 7 are each provided with a turntable fixture 18, the fuel tank cap to be tested fixed on the positioning chuck fixture 19 is driven to rotate by the turntable fixture 18, the durability of the ratchet teeth and pawls in the fuel tank cap to be tested is rotationally tested by the durability testing mechanism 15, and the torque of the ratchet teeth and pawls in the fuel tank cap to be tested is rotationally tested by the torque testing mechanism 7.

[0045] After the fuel tank cap is developed and formed, there is currently no special device to test its durability and torque. Therefore, the existing structure is usually referred to, and the mold is opened and put into production while ensuring normal use. As a result, the service life of the existing fuel tank cap can only be judged by experience, and targeted and relatively accurate testing cannot be performed. This leads to problems such as premature replacement, excessive material use, or sudden tooth breakage during use of the fuel tank cap. For fuel tank caps with new structures, problems such as service life not meeting standards or excessive torque are also prone to occur. When the torque control of the fuel tank cap is first and then there is the problem of excessive torque, which often leads to the problem that the user needs to use more force when operating, and the user's operating experience is very poor. For the development of the existing technology, this problem cannot be perfectly solved by simply testing a certain indicator. That is, by referring to the improvement made by the existing technology, it is easy to have the problem of sufficient durability but excessive torque. For the new structure, it is easy to have the problem of too small or too large torque, and the service life is not easy to control. Therefore, in order to be able to test the durability and torque of the ratchet teeth 30 and the pawl 40 in the newly developed fuel tank cap, a performance test device for the ratchet teeth 30 and the pawl 40 in the fuel tank cap is prepared, which is composed of a control cabinet 3 with an operation display 13, and a durability test mechanism 15 and a torque test mechanism 7 that can test the torque and durability respectively. When testing the fuel tank cap, one of the ratchet teeth 30 or the pawl 40 in the fuel tank cap is fixed on the positioning chuck fixture 19, and then respectively passed the durability test. The mechanism 15 and the turntable fixture 18 on the torque testing mechanism 7 respectively fix the ratchet teeth 30 or the pawl 40 of the other half of the fuel tank cap. After the torque testing mechanism 7 is controlled by the operating display 13 to rotate the turntable fixture 18, the torque generated when the teeth jump can be accurately judged. After the durability testing mechanism 15 is controlled by the operating display 13 to rotate the turntable fixture 18, the ratchet teeth 30 and the pawl 40 in the fuel tank cap can be accurately judged by combining the number of rotations of the durability testing mechanism 15. A basic analysis is made on the durability, so that the R&D personnel can make timely adjustments to the ratchet teeth 30 and the pawl 40 in the fuel tank cap through the corresponding analysis data, so that the ratchet teeth 30 and the pawl 40 in the fuel tank cap put into production can meet the service life requirements and the torque requirements at the same time, avoiding the problem that the ratchet teeth 30 and the pawl 40 in the fuel tank cap do not meet the service life requirements or the torque required for tooth selection due to design defects, so that the production cost of the fuel tank cap is lower, the structure is more reasonable, and the operation experience is better.

[0046] As a further improvement, a switching mechanism 12 is further provided on the control cabinet 3 , and the positions of the turntable fixture 18 on the durability testing mechanism 15 and the torque testing mechanism 7 relative to the positioning chuck fixture 19 are laterally moved by the switching mechanism 12 .

[0047] During the research and development process, it was found that when each turntable fixture 18 corresponds to a positioning chuck fixture 19, the fuel tank cap needs to be installed on different positioning chuck fixtures 19 when testing different performances, while the fuel tank cap only needs to be tested with the ratchet turntable and the pawl 40. Therefore, in the process of changing positions, the operation is troublesome, and the ratchet turntable and the pawl 40 are easily separated and reassembled, thereby affecting the test performance, especially when the torque is tested again after the durability test, there will be a certain deviation in the test accuracy. Therefore, a switching mechanism 12 that can switch the position of the durability test mechanism 15 and the torque test mechanism 7 is installed on the control cabinet 3. When the torque and durability of the fuel tank cap are tested, since the positions of the turntable fixture 18 on the durability testing mechanism 15 and the torque testing mechanism 7 relative to the positioning chuck fixture 19 can be moved laterally through the switching mechanism 12, only one positioning chuck fixture 19 on the base 1 is required for operation. During the operation, there is no need to disassemble and assemble the fuel tank cap to be tested back and forth, the operation is more convenient, the production cost is lower, the testing efficiency is higher, the operation difficulty is lower, and the accuracy is higher.

[0048] A further improvement is that the switching mechanism 12 includes a slide rail 8 horizontally arranged on the control cabinet 3, a slide seat 9 slidably arranged on the slide rail 8, and a horizontal cylinder 5 arranged on one side of the slide seat 9. The durability testing mechanism 15 and the torque testing mechanism 7 are both arranged on the slide seat 9, and the slide seat 9 slides horizontally through the horizontal cylinder 5.

[0049] When it is necessary to switch the turntable tooling 18 on the durability testing mechanism 15 and the torque testing mechanism 7, rapid switching can be achieved by simply controlling the extension and retraction of the piston rod of the horizontal cylinder 5 through the operation display 13, wherein the relative position of the durability testing mechanism 15 and the torque testing mechanism 7 is just the extreme extension and retraction position of the piston rod of the horizontal cylinder 5, which is simpler to operate and has higher efficiency and precision than motor control.

[0050] As a further improvement, the durability testing mechanism 15 includes a first lifting mechanism 16 disposed on the slide 9 , a first motor 14 disposed on the first lifting mechanism 16 , and the turntable fixture 18 is disposed on the rotating shaft of the first motor 14 .

[0051] When the durability of the ratchet teeth 30 and the pawl 40 in the fuel tank cap is tested by the durability testing mechanism 15, after the parameters are set, the first motor 14 and the turntable fixture 18 can be quickly moved downward by the first lifting mechanism 16, so that the turntable fixture 18 fixes the upper ends of the ratchet teeth 30 and the pawl 40, and then by starting the first motor 14, the turntable fixture 18 can be driven to rotate, so that the ratchet teeth 30 and the pawl 40 can achieve relative rotation and tooth jumping. The whole operation process is simple and convenient, and the production cost is low.

[0052] As a further improvement, the torque testing mechanism 7 includes a second lifting mechanism 10 arranged on the slide 9, a second motor 4 arranged on the second lifting mechanism 10, and a torque sensor 2 arranged on the rotating shaft of the second motor 4, and the turntable tooling 18 is controlled to rotate by the second motor 4.

[0053] When the torque of the ratchet teeth 30 and the pawl 40 in the fuel tank cap is tested by the torque testing mechanism 7, after the parameters are set, the second motor 4 and the turntable fixture 18 can be quickly moved downward by the second lifting mechanism 10, so that the turntable fixture 18 fixes the upper ends of the ratchet teeth 30 and the pawl 40, and then by starting the second motor 4, the turntable fixture 18 can be driven to rotate. During the rotation, the real-time torque detection data can be transmitted to the controller through the torque sensor 2. When the ratchet teeth 30 and the pawl 40 jump during the rotation, the torque will be instantly reduced, so that the torque can be detected by multiple tooth jumps. The whole operation process is simple and convenient, the production cost is low, and the detection data is accurate.

[0054] Further improvement is that the first lifting mechanism 16 and the second lifting mechanism 10 each include two vertically arranged guide rods 6, a lifting seat 17 sleeved on the guide rods 6, and a driver 11 arranged on the slide 9 to slide the lifting seat 17 up and down, and the first motor 14 and the second motor 4 are both installed on the lifting seat 17; the driver 11 adopts a cylinder structure, and the piston rod of the driver 11 is connected to the lifting seat 17.

[0055] The driver 11 can slide up and down along the guide rod 6 through the lifting seat 17, thereby ensuring its use trajectory and avoiding coaxiality deviation. The driver 11 adopts a cylinder structure, and the piston rod of the driver 11 is connected to the lifting seat 17. The structure is simpler, the operation is easier, and the manufacturing cost is lower. At the same time, it can also avoid radial shaking of the driver 11.

[0056] As a further improvement, a linkage shaft 20 is provided between the turntable fixture 18 and the first motor 14; and the turntable fixture 18 is detachably connected by threads.

[0057] When the rotary tool 18 is used for rotation control, in order to avoid the driver 11 and the fuel tank cap being too close to each other and thus increasing the difficulty of operation, a linkage shaft 20 is added between the rotary tool 18 and the driver 11, and the rotary tool 18 is installed on the linkage shaft 20, so that the driver 11 and the fuel tank cap have sufficient operating space and visual space during operation. The linkage shaft 20 and the rotary tool 18 are connected by threads, which makes disassembly more convenient and replacement of the rotary tool 18 is simpler.

[0058] Embodiment 2:

[0059] A method for testing the performance of ratchet teeth 30 and pawl 40 in a fuel tank cap includes a performance testing device for ratchet teeth 30 and pawl 40 in a fuel tank cap. The steps of testing the durability of ratchet teeth 30 and pawl 40 by the performance testing device for ratchet teeth 30 and pawl 40 in a fuel tank cap include:

[0060] A1. Install the positioning chuck fixture 19 onto the base 1 and fix it;

[0061] A2. Align the outer ratchet of the fuel tank cap turntable with the inner ratchet of the positioning chuck tooling 19, and fix the turntable;

[0062] A3, setting the number of rotations of the first motor 14 and the number of tooth jumps of the ratchet teeth 30 and the pawl 40 through the operation display 13;

[0063] A4. Start the durability operation procedure, switch the durability test mechanism 15 to the position above the positioning chuck fixture 19 through the horizontal cylinder 5, then control the turntable fixture 18 to descend through the first lifting mechanism 16 to clamp the fuel tank cap turntable pawl 40, and then start the first motor 14 to perform the test;

[0064] A5. After the test is completed, take out the fuel tank cap turntable to be tested and check whether the ratchet teeth 30 and the pawl 40 of the ratchet wheel are broken;

[0065] A6. Repeat steps A3 to A5 until the ratchet teeth 30 and the ratchet pawl 40 of the fuel tank cap turntable to be tested are broken.

[0066] When testing the durability of the ratchet teeth 30 and pawl 40 of the ratchet wheel in the fuel tank cap, first install the corresponding positioning chuck fixture 19 on the base 1 and fix it; then install the turntable fixture 18 on the rotating shaft of the first motor 14, and then align the outer ratchet teeth of the fuel tank cap turntable with the inner ratchet disk of the positioning chuck fixture 19, and fix the turntable; set the number of revolutions per minute, the number of rotations, and the number of tooth jumps of the ratchet teeth 30 and the pawl 40 of the ratchet wheel 30 through the operation display 13 of the first motor 14; when the durability operation program is started, the durability testing mechanism 15 is switched to the top of the positioning chuck fixture 19 through the horizontal cylinder 5, and the turntable fixture 18 is controlled to descend through the first lifting mechanism 16 to clamp the fuel tank cap turntable pawl 40, and then the first motor 14 is started to rotate. When the number of revolutions of the first motor 14 reaches the set value, the endurance test mechanism 15 is switched to the top of the positioning chuck fixture 19 through the horizontal cylinder 5. After the first lifting mechanism 16 is reset, the first stage of the test is completed, and the fuel tank cap turntable to be tested is taken out to check whether the ratchet teeth 30 and the pawl 40 are broken; when the ratchet teeth 30 and the pawl 40 are broken during the first test, a new fuel tank cap is used for retesting. When the ratchet teeth 30 and the pawl 40 are partially cracked during the first test, it means that the service life has reached the upper limit. When the first test is completed and the ratchet teeth 30 and the pawl 40 are intact, steps A3 to A5 are repeated until the ratchet teeth 30 and the pawl 40 in the fuel tank cap turntable to be tested are broken. The service life can be quickly calculated based on the number of tooth jumps and the number of revolutions corresponding to the breakage and displayed on the screen of the operation display 13. After testing by the above method, the problem that the durability and service life of the ratchet teeth 30 and the pawl 40 in the existing fuel tank cap cannot be detected can be effectively solved.

[0067] Embodiment 3:

[0068] A method for testing the performance of ratchet teeth 30 and pawl 40 in a fuel tank cap includes a performance testing device for ratchet teeth 30 and pawl 40 in a fuel tank cap. The steps of testing the torque of ratchet teeth 30 and pawl 40 by the performance testing device for ratchet teeth 30 and pawl 40 in a fuel tank cap include:

[0069] B1, installing the positioning chuck fixture 19 onto the base 1 and fixing it;

[0070] B2. Align the outer ratchet of the fuel tank cap turntable with the inner ratchet of the positioning chuck fixture 19, and fix the turntable;

[0071] B3, setting the rotation angle of the second motor 4 and the number of tooth jumps of the ratchet teeth 30 and the pawl 40 through the operation display 13;

[0072] B2. Start the torque detection operation procedure, move the torque test mechanism 7 to the position above the positioning chuck fixture 19 through the horizontal cylinder 5, and then control the turntable fixture 18 to descend through the second lifting mechanism 10 to clamp the fuel tank cap turntable pawl 40, then start the second motor 4 to perform the test, and record the torque detection value of each tooth;

[0073] B3. After the test is completed, take out the fuel tank cap turntable to be tested.

[0074] When the torque of the ratchet teeth 30 and the pawl 40 of the ratchet wheel 30 and the pawl 40 in the fuel tank cap is tested by the performance test device of the ratchet teeth 30 and the pawl 40 in the fuel tank cap, the corresponding positioning chuck fixture 19 is first installed on the base 1 and fixed; then the turntable fixture 18 is installed on the rotating shaft of the first motor 14, and then the outer ratchet of the turntable of the fuel tank cap is aligned with the inner ratchet disk of the positioning chuck fixture 19, and the turntable is fixed; the rotation angle of the second motor 4 and the number of tooth jumps of the ratchet teeth 30 and the pawl 40 are set by the operation display 13; when the torque operation program is started, the torque test mechanism 7 is switched to the top of the positioning chuck fixture 19 by the horizontal cylinder 5, and the turntable fixture 18 is controlled to descend by the second lifting mechanism 10 The pawl 40 of the fuel tank cap turntable is stuck, and then the second motor 4 is started to rotate. When the second motor 4 is rotating, the ratchet teeth 30 and the pawl 40 can produce a first rotation. During the rotation, the torque value is detected in real time by the torque sensor 2. When the ratchet teeth 30 and the pawl 40 complete a tooth jump, the torque value completes the numerical detection from 0-X-0. After multiple tooth jumps, the torque value required for each tooth jump can be accurately calculated, thereby completing the numerical detection of the required torque size and displaying it on the screen of the operation display 13. After testing with the above method, the problem that the torque required by the ratchet teeth 30 and the pawl 40 in the existing fuel tank cap cannot be detected can be effectively solved.

[0075] Embodiment 4:

[0076] The performance testing device for the ratchet teeth 30 and the pawl 40 in the fuel tank cap can also test the torque and durability of the ratchet teeth 30 and the pawl 40, and the testing steps include:

[0077] S1, installing the positioning chuck tooling 19 onto the base 1 and fixing it;

[0078] S2, aligning the outer ratchet of the fuel tank cap turntable with the inner ratchet of the positioning chuck tooling 19, and fixing the turntable;

[0079] S3, respectively setting the detection parameters of durability and torque through the operation display 13, the detection parameters of durability include the number of rotations of the first motor 14 and the number of tooth jumps of the ratchet teeth 30 and the pawl 40; the detection parameters of torque include the rotation angle of the second motor 4 and the number of tooth jumps of the ratchet teeth 30 and the pawl 40;

[0080] S4, start the detection operation procedure, switch the torque test mechanism 7 to the position above the positioning chuck fixture 19 through the horizontal cylinder 5, then control the turntable fixture 18 to descend through the second lifting mechanism 10 to clamp the fuel tank cap turntable pawl 40, then start the second motor 4 to perform the test, and record the torque detection value of each tooth;

[0081] B5. After the torque test is completed, the torque test mechanism 7 is reset, and then the durability test mechanism 15 is switched to the position directly above the positioning chuck fixture 19 through the horizontal cylinder 5, and then the durability test of steps A4 to A6 is performed.

[0082] In the actual testing process, the torque and durability are tested respectively through the steps of Example 2 and Example 3, wherein the torque is tested first and then the durability is tested. This can avoid the problem of excessive data error when testing the torque after testing the durability, resulting in a poor overall user experience.

[0083] The above-mentioned implementation modes are only preferred implementation modes of the present application and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present application shall fall within the scope of protection required by the present application.

Claims

1. A fuel tank cap ratchet and pawl performance test device, characterized in that: The invention comprises a base (1), a control cabinet (3) arranged on the base (1), a durability test mechanism (15) and a torque test mechanism (7) arranged on the front side of the control cabinet (3), an operation display (13) arranged on the control cabinet (3) for controlling the durability test mechanism (15) and the torque test mechanism (7) and displaying data, and a positioning chuck fixture (19) arranged on the base (1) for fixing a fuel tank cap to be tested, wherein the durability test mechanism (15) and the torque test mechanism (7) are each provided with a turntable fixture (18), the fuel tank cap to be tested fixed on the positioning chuck fixture (19) is driven to rotate by the turntable fixture (18), the durability of the ratchet teeth and pawls in the fuel tank cap to be tested is rotationally tested by the durability test mechanism (15), and the torque of the ratchet teeth and pawls in the fuel tank cap to be tested is rotationally tested by the torque test mechanism (7).

2. A fuel tank cap ratchet and pawl performance testing device according to claim 1, characterized in that: The control cabinet (3) is also provided with a switching mechanism (12), and the position of the turntable fixture (18) on the durability testing mechanism (15) and the torque testing mechanism (7) relative to the positioning chuck fixture (19) is laterally moved by the switching mechanism (12).

3. A fuel tank cap ratchet and pawl performance testing device according to claim 2, characterized in that: The switching mechanism (12) comprises a slide rail (8) arranged transversely on the control cabinet (3), a slide seat (9) slidably arranged on the slide rail (8), and a horizontal cylinder (5) arranged on one side of the slide seat (9); the durability test mechanism (15) and the torque test mechanism (7) are both arranged on the slide seat (9); and the slide seat (9) slides transversely via the horizontal cylinder (5).

4. A fuel tank cap internal ratchet and pawl performance testing device according to claim 3, characterized in that: The durability testing mechanism (15) comprises a first lifting mechanism (16) arranged on the slide seat (9), a first motor (14) arranged on the first lifting mechanism (16), and the turntable tooling (18) is arranged on the rotating shaft of the first motor (14).

5. A fuel tank cap ratchet and pawl performance testing device according to claim 4, characterized in that: The torque testing mechanism (7) comprises a second lifting mechanism (10) arranged on the slide seat (9), a second motor (4) arranged on the second lifting mechanism (10), and a torque sensor (2) arranged on the rotating shaft of the second motor (4); the rotation of the turntable tooling (18) is controlled by the second motor (4).

6. A fuel tank cap ratchet and pawl performance testing device according to claim 5, characterized in that: The first lifting mechanism (16) and the second lifting mechanism (10) both comprise two vertically arranged guide rods (6), a lifting seat (17) sleeved on the guide rods (6), and a driver (11) arranged on the slide seat (9) for sliding the lifting seat (17) up and down, and the first motor (14) and the second motor (4) are both mounted on the lifting seat (17).

7. A fuel tank cap internal ratchet and pawl performance testing device according to claim 5, characterized in that: A linkage shaft (20) is provided between the turntable tooling (18) and the first motor (14).

8. A method for testing the performance of ratchet teeth and pawls of a ratchet wheel in a fuel tank cap, characterized in that: The fuel tank cap internal ratchet and pawl performance testing device comprises the steps of testing the durability of the ratchet and pawl by the fuel tank cap internal ratchet and pawl performance testing device comprising: A1. Install the positioning chuck tool (19) onto the base (1) and fix it; A2. Align the outer ratchet of the fuel tank cap turntable with the inner ratchet of the positioning chuck tooling (19), and fix the turntable; A3, setting the number of rotations of the first motor (14) and the number of tooth jumps of the ratchet teeth and the ratchet pawl through the operation display (13); A4, starting the durability operation procedure, switching the durability test mechanism (15) to the position directly above the positioning chuck fixture (19) through the horizontal cylinder (5), then controlling the turntable fixture (18) to descend through the first lifting mechanism (16) to clamp the fuel tank cap turntable pawl, and then starting the first motor (14) to perform the test; A5. After the test is completed, take out the fuel tank cap turntable to be tested and check whether the ratchet teeth and pawls of the ratchet wheel are broken; A6. Repeat steps A3 to A5 until the ratchet teeth and pawls of the ratchet wheel in the fuel tank cap turntable to be tested are broken.

9. A method for testing the performance of ratchet teeth and pawls of a ratchet wheel in a fuel tank cap, characterized in that: The fuel tank cap internal ratchet and pawl performance testing device comprises the steps of testing the ratchet and pawl torque of the ratchet and pawl by the fuel tank cap internal ratchet and pawl performance testing device, comprising: B1. Install the positioning chuck tooling (19) onto the base (1) and fix it; B2, aligning the outer ratchet of the fuel tank cap turntable with the inner ratchet of the positioning chuck tooling (19), and fixing the turntable; B3, setting the rotation angle of the second motor (4) and the number of tooth jumps of the ratchet teeth and pawls of the ratchet wheel through the operation display (13); B2. Start the torque detection operation procedure, move the torque test mechanism (7) to the position directly above the positioning chuck fixture (19) through the horizontal cylinder (5), then control the turntable fixture (18) to descend through the second lifting mechanism (10) to clamp the fuel tank cap turntable pawl, then start the second motor (4) to perform the test, and record the torque detection value of each tooth; B3. After the test is completed, take out the fuel tank cap turntable to be tested.

10. A method for testing the performance of ratchet teeth and pawls of a ratchet wheel in a fuel tank cap according to claims 8 and 9, characterized in that: The steps of testing the ratchet teeth and pawl of the ratchet wheel by the ratchet teeth and pawl performance testing device in the fuel tank cap include: | S1, installing the positioning chuck tooling (19) onto the base (1) and fixing it; S2, aligning the outer ratchet of the fuel tank cap turntable with the inner ratchet of the positioning chuck tooling (19), and fixing the turntable; S3, respectively setting the detection parameters of durability and torque through the operation display (13), wherein the detection parameters of durability include the number of rotations of the first motor (14) and the number of tooth jumps of the ratchet teeth and the ratchet pawl; and the detection parameters of torque include the rotation angle of the second motor (4) and the number of tooth jumps of the ratchet teeth and the ratchet pawl; S4, starting the detection operation procedure, switching the torque testing mechanism (7) to the position directly above the positioning chuck fixture (19) through the horizontal cylinder (5), then controlling the turntable fixture (18) to descend through the second lifting mechanism (10) to clamp the fuel tank cap turntable pawl, and then starting the second motor (4) to perform the test, and recording the torque detection value of each tooth; B5. After the torque test is completed, the torque test mechanism (7) is reset, and then the durability test mechanism (15) is switched to the position directly above the positioning chuck fixture (19) through the horizontal cylinder (5), and then the durability test of steps A4 to A6 is performed.

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