Throttle valve calibration device

Abstract

The utility model discloses a throttle valve calibration device, and belongs to the field of unmanned aerial vehicle aero-engines. Comprising a shell, a connecting rod measuring mechanism, a calibration measuring module and a three-jaw locking mechanism, the shell is fixedly installed at an air inlet pipe opening through the three-jaw locking mechanism, and it is guaranteed that the free end of the connecting rod measuring mechanism is opposite to the throttle valve piece. The fixed end of the connecting rod measuring mechanism is connected with the calibration measuring module; the shell is formed by coaxially and fixedly connecting a front shell, a rear shell and a cover plate; the front shell is of an annular structure with a central through hole and an L-shaped radial section; a main body of the rear shell is of a hollow sleeve structure, an annular disc is coaxially and fixedly installed at one end of the rear shell, the inner ring face of the annular disc extends towards the front shell in the axial direction and is coaxially installed with a center through hole of the front shell 1 in an equal-diameter mode, and the outer ring face of the annular disc and the circumferential face of the front shell are coaxially fixed to form a cavity for installing a three-jaw locking mechanism. And a cover plate is packaged at the other end of the rear shell. The integral precision of the electronic throttle valve of the aero-engine is improved.

Description

Technical Field

[0001] This utility model belongs to the field of unmanned aerial vehicle (UAV) aero-engines, and specifically relates to a throttle calibration device. Background Technology

[0002] Most currently operational unmanned aerial vehicles (UAVs) use internal combustion engines as their direct power source, and the electronic throttle is a crucial component for controlling engine power. To meet the lightweight design requirements of aero engines, many engines employ feedbackless control methods. Improving the control precision of the electronic throttle is key to enhancing the precision of engine fuel injection control and ensuring engine consistency.

[0003] Currently, electronic throttle valves in service all use open-loop control. Due to the limitations of machining precision of mechanical parts and sensor data acquisition accuracy, the following main problems exist:

[0004] 1. The high horsepower (throttle opening 100%) position is inaccurate. After sending the high horsepower command, the actual opening of the throttle valve does not reach the maximum or exceeds the maximum position, resulting in the engine intake air volume not reaching the maximum value.

[0005] 2. Inaccurate low horsepower (throttle opening 0%) position: After sending the low horsepower command, the throttle plate is not completely closed, resulting in inaccurate engine throttle zero point or being stuck. This causes the throttle motor to be in a stalled state for a long time, greatly increasing the probability of failure.

[0006] Therefore, this utility model provides a throttle calibration mechanism that is simple to operate and highly reliable, thereby achieving convenient throttle calibration and indirectly improving the system's lifespan and ease of operation. Summary of the Invention

[0007] The technical problem to be solved:

[0008] To overcome the shortcomings of existing technologies, this invention provides a throttle calibration device that supports both passive measurement and active calibration modes, solving the problem of the inability to dynamically adjust the throttle angle in traditional open-loop control. The throttle opening can be measured in real time using an angle sensor, and through the coordinated control of the drive motor and the angle sensor, the angle can be actively preset for calibration, significantly improving calibration flexibility. This invention effectively solves the core pain point of throttle calibration for UAV engines, improves the overall accuracy of electronic throttles in aero-engines, and has high market application value.

[0009] The technical scheme of the utility model discloses: a throttle valve calibration device, including casing and install its connecting rod measuring mechanism, calibration measurement module, three claw locking mechanism, through three claw locking mechanism with casing fixed installation in the air intake pipe mouth, guarantee the free end of connecting rod measuring mechanism with throttle valve piece opposite, the fixed end of connecting rod measuring mechanism is connected with calibration measurement module,

[0010] The casing is coaxially fixedly connected by a front casing, a rear casing and a cover plate, the front casing is an annular structure with a central through hole and an L-shaped radial section, the main body of the rear casing is a hollow sleeve structure, one end of which is coaxially fixedly installed with an annular disc, the inner ring surface of the annular disc extends axially to the front casing, and the central through hole of the front casing is coaxially installed with the same diameter, and the outer ring surface of the annular disc is coaxially fixed with the peripheral surface of the front casing to form a cavity for installing the three-claw locking mechanism; the other end of the rear casing is packaged with the cover plate, and the sleeve structure is a cavity for installing the connecting rod measuring mechanism.

[0011] The further technical scheme of the utility model is that the three claws of the three-claw locking mechanism are evenly distributed on the end surface of the front casing in the circumferential direction, and the circumferential direction is coaxial with the central through hole of the front casing; the synchronous radial movement of the three claws is realized through the driving assembly, and the throttle valve air inlet pipe with different diameters can be adapted.

[0012] The further technical scheme of the utility model is that three radial grooves are evenly distributed on the end surface of the front casing in the circumferential direction, serving as radial movement guide grooves for the three claws; the claws are installed outside the radial movement guide grooves through the claw seats; the claw seats are movably installed in the radial movement guide grooves, the top surface of the claw seat is provided with the claw, and the bottom surface of the claw seat extends into the front casing and is provided with a flat thread, which is connected with the driving assembly.

[0013] The further technical scheme of the utility model is that the driving assembly comprises a chuck motor and a chuck body provided with a central through hole, the outer peripheral surface of the chuck body is evenly provided with a gear slot in the circumferential direction to form a chuck gear, the end surface of the chuck body is coaxially provided with a flat thread, and the flat thread is engaged with the flat thread of the claw seat; the output shaft of the chuck motor is provided with a chuck driving gear, which is engaged with the chuck gear to drive the rotation of the chuck gear, and then the flat thread of the chuck body drives the claw seat and the claw to move in the radial direction, and the coaxiality of the locking process is ensured through the radial movement guide groove.

[0014] The further technical scheme of the utility model is that the connecting rod measuring mechanism comprises a U-shaped connecting arm, and a first measuring rod and a second measuring rod rotatably connected to the lower part of the U-shaped connecting arm, the first measuring rod and the second measuring rod are parallel to each other and have the same axial length, and the first measuring rod and the second measuring rod are connected into a four-bar linkage structure by a straight connecting arm rotatably connected to the lower part of the first measuring rod and the second measuring rod.

[0015] The U-shaped connecting arm is fixed as a fixed end, and is connected with the calibration measurement module through a fixed rod; the fixed rod and the U-shaped connecting arm are located in the same plane and are fixed perpendicularly to the two side arms, and are used for transmitting or controlling the rotation angle of the U-shaped connecting arm;

[0016] The top end of the first measurement rod and the second measurement rod is rotationally connected with the U-shaped connecting arm, the bottom end thereof is used as a free end of the connecting rod measurement mechanism and faces the throttle blade, and the straight line where the bottom end of the first measurement rod and the second measurement rod is located is parallel to the two side arms of the U-shaped connecting arm, so that the angle is transmitted without error.

[0017] The further technical scheme of the utility model is that the bottom end of the first measurement rod and the second measurement rod is a spherical contact.

[0018] The further technical scheme of the utility model is that the two ends of the straight line connecting arm are rotationally connected with the lower end of the first measurement rod and the second measurement rod through the second connecting shaft and the first connecting shaft respectively.

[0019] The further technical scheme of the utility model is that the calibration measurement module comprises an angle sensor and a driving motor, the angle sensor is used for measuring the rotation angle of the throttle blade, and the driving motor is used for controlling the rotation angle of the fixed rod, so as to actively calibrate the rotation angle of the throttle blade.

[0020] The further technical scheme of the utility model is that the two ends of the fixed rod respectively penetrate the shell along the radial direction, are respectively installed in the axial guide groove on the outer periphery of the shell through the guide blocks, the angle sensor is installed on the part of the guide block of one end of the fixed rod which extends out of the shell, and the driving motor support is installed on the part of the guide block of the other end of the fixed rod which extends out of the shell; and the other end of the fixed rod is rotationally connected with the guide block of the end;

[0021] The angle sensor is used for measuring the rotation angle of the fixed rod and the U-shaped connecting arm.

[0022] The driving motor and a transmission assembly are installed on the driving motor support, the driving motor is connected with the other end of the fixed rod through the transmission assembly, and is used for controlling the rotation angle of the fixed rod and the U-shaped connecting arm.

[0023] The further technical scheme of the utility model is that the calibration measurement module further comprises a control rod, the control rod is arranged parallel to the axial guide groove of the shell, one end of the control rod is rotationally connected with the guide block of the angle sensor through the threaded hole of the cover plate, and the other end of the control rod is located outside the shell; the rod part of the control rod is provided with an external thread, is matched with the threaded hole of the shell, axial displacement of the control rod is realized through screwing, the guide block of the angle sensor is further controlled to move along the axial guide groove, and the control of the axial position of the connecting rod measurement mechanism is completed.

[0024] Beneficial effects

[0025] The utility model discloses a beneficial effect lies in: the utility model discloses a device through dual mode calibration, self -adaptation locking mechanism and modular design, the core pain point in the throttle valve calibration of unmanned aerial vehicle engine is solved, has high precision, high versatility, convenient operation and safe and reliable etc. advantage, has the remarkable application value. The specific advantage analysis is as follows:

[0026] 1. The dual mode calibration function of the utility model, supports passive measurement mode (real -time detection throttle opening) and active calibration mode (preset angle forced adjustment), solves the problem that angle cannot be dynamically corrected in traditional open loop control, improves precision and flexibility. Through angle sensor and drive motor, realize closed loop feedback, ensure calibration accuracy (such as the accurate calibration of 100% and 0% position of big horsepower), avoid the throttle blade opening deviation caused by machining error.

[0027] 2. The three-jaw locking mechanism designed by the utility model adopts the three-jaw chuck design of plane thread drive, moves synchronously in radial through chuck motor drive claw, adapts the adaptive locking of different diameter intake pipe (such as wide adjustable range of diameter), and the guiding groove design guarantees the coaxiality, avoids the installation error to influence the measurement result, enhances the versatility.

[0028] The first measuring rod and the second measuring rod constituting the connecting rod structure are always parallel, through the control rod (outer thread design) of axial position adjustable, adapt to the throttle valve structure of different depth, ensure the stability of the contact of measuring rod and throttle piece, realize angle errorless transmission, reduce the measurement error caused by mechanical deformation.

[0029] 3. The utility model discloses through drive motor preset angle, angle sensor real -time feedback, reduces manual intervention, and the calibration process is high in degree of automation. Through the screw control rod, the axial position of the measuring rod can be adjusted, and the operation is simple and does not need complex tools, and the calibration time is significantly shortened. DRAWINGS

[0030] Figure 1 It is the structure diagram of a throttle valve calibration device in the utility model embodiment;

[0031] Figure 2 It is the three-jaw locking mechanism composition diagram in the utility model embodiment;

[0032] Figure 3 It is the drive mechanism composition diagram in the utility model embodiment;

[0033] Figure 4 It is the connecting rod mechanism composition diagram in the utility model embodiment;

[0034] Figure 5 It is the fixed mode schematic diagram in the utility model embodiment;

[0035] Figure 6 is a working mode schematic diagram in the embodiment of the utility model;

[0036] Figure 7 is a measurement principle schematic diagram in the embodiment of the utility model.

[0037] Explanation of reference signs: 1. front shell, 101. radial displacement guide groove, 2. rear shell, 201. axial displacement guide groove, 3. chuck motor support, 4. chuck motor, 5. cover plate, 6. driving motor support, 7. driving motor, 8. angle sensor, 9. sensor guide block, 10. control rod, 11. claw (number 3), 12. clamping spring, 13. chuck body, 131. chuck body gear, 132. chuck body plane thread, 14. chuck driving gear, 15. claw seat (number 3), 16. driving gear guide block, 17. driving gear, 18. driving motor gear, 19. first measuring rod, 20. second measuring rod, 21. first connecting shaft, 22. straight line connecting arm, 23. second connecting shaft, 24. third connecting shaft, 25. fourth connecting shaft, 26. U-shaped connecting arm, 27. air inlet pipe, 28. throttle blade, 29. fixed rod. DETAILED DESCRIPTION

[0038] The embodiments described below with reference to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as a limitation of the utility model.

[0039] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation of the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the utility model.

[0040] Based on the electronic throttle valve in active equipment adopts open loop control, affected by mechanical parts machining precision and sensor collection accuracy, cause engine intake air quantity cannot be accurately measured and controlled and other problems, the utility model provides a kind of throttle valve calibration device, including shell and the connecting rod measuring mechanism, calibration measurement module, three jaw locking mechanism installed on it;Connecting rod measuring mechanism is fixedly installed in air intake pipe by three jaw locking mechanism, guarantee the free end of connecting rod measuring mechanism and throttle valve piece relative;The fixed end of connecting rod measuring mechanism is connected with calibration measurement module;The shell is coaxially fixedly connected by front shell, rear shell and cover plate, and the front shell is annular structure with central through hole and L-shaped radial section;The main body of rear shell is hollow sleeve structure, one end of which is coaxially fixedly installed with annular disc, the inner ring surface of annular disc extends to front shell along axial direction, and the central through hole of front shell 1 is coaxially installed with the same diameter, and the outer ring surface of annular disc is coaxially fixed with the peripheral surface of front shell to form the cavity for installing three jaw locking mechanism;The other end of rear shell is packaged with cover plate, and the sleeve structure is the cavity for installing connecting rod measuring mechanism.

[0041] Preferably, the three clamping claws of the three-jaw locking mechanism are evenly distributed on the end face of the front shell in the circumferential direction, and the circumferential direction is coaxial with the central through hole of the front shell;The synchronous radial movement of the three clamping claws is realized by the driving assembly, which can adapt to throttle air intake pipes of different diameters.

[0042] Preferably, the end face of the front shell is evenly distributed with three radial through grooves in the circumferential direction, which are used as radial movement guide grooves for the three clamping claws;The clamping claw is installed outside the radial movement guide groove through the clamping claw seat;The clamping claw seat is movably installed in the radial movement guide groove, and the top surface of the clamping claw seat is provided with a clamping claw, and the bottom surface of the clamping claw seat extends into the front shell and is provided with a flat thread, which is connected with the driving assembly.

[0043] Preferably, the driving assembly includes a chuck motor and a chuck body with a central through hole, the outer peripheral surface of the chuck body is evenly distributed with gear grooves to form a chuck body gear, and the end face of the chuck body is coaxially provided with a flat thread, which is engaged with the flat thread of the clamping claw seat;The output shaft of the chuck motor is provided with a chuck driving gear, which is engaged with the chuck body gear to drive the rotation of the chuck body, and then the chuck claw seat and the clamping claw are driven to move radially by the flat thread of the chuck body, and the coaxiality of the locking process is ensured by the radial movement guide groove.

[0044] Preferably, the connecting rod measuring mechanism includes a U-shaped connecting arm and first and second measuring rods rotatably connected to the lower part of the U-shaped connecting arm, the first and second measuring rods are parallel to each other and have the same axial length, and the first and second measuring rods are connected into a four-bar linkage structure by a straight connecting arm rotatably connected to the lower part of the first and second measuring rods.

[0045] The U-shaped connecting arm is fixed as a fixed end, and is connected with the calibration measurement module through a fixed rod; the fixed rod and the U-shaped connecting arm are located in the same plane and are fixed perpendicularly to the two side arms, and are used for transmitting or controlling the rotation angle of the U-shaped connecting arm;

[0046] The top end of the first measuring rod and the second measuring rod is rotationally connected with the U-shaped connecting arm, the bottom end thereof is used as a free end of the connecting rod measurement mechanism and faces the throttle blade, and the straight line where the bottom end of the first measuring rod and the second measuring rod is located is parallel to the two side arms of the U-shaped connecting arm, so that the angle is transmitted without error.

[0047] Preferably, the bottom end of the first measuring rod and the second measuring rod is a spherical contact.

[0048] Preferably, the two ends of the straight connecting arm are rotationally connected with the lower end of the first measuring rod and the second measuring rod through a second connecting shaft and a first connecting shaft respectively.

[0049] Preferably, the calibration measurement module comprises an angle sensor and a driving motor, the angle sensor is used for measuring the rotation angle of the throttle blade, and the driving motor is used for controlling the rotation angle of the fixed rod, so as to actively calibrate the rotation angle of the throttle blade.

[0050] Preferably, the two ends of the fixed rod respectively penetrate the housing along the radial direction, and are respectively installed in the axial guide groove on the outer periphery of the housing through guide blocks, one end of the guide block extending out of the housing is provided with the angle sensor, and the other end of the guide block extending out of the housing is provided with a driving motor support; and the other end of the fixed rod is rotationally connected with the guide block at the end.

[0051] The angle sensor is used for measuring the rotation angle of the fixed rod and the U-shaped connecting arm.

[0052] The driving motor support is provided with a driving motor and a transmission assembly, the driving motor is connected with the other end of the fixed rod through the transmission assembly, and is used for controlling the rotation angle of the fixed rod and the U-shaped connecting arm.

[0053] Preferably, the calibration measurement module further comprises a control rod, the control rod is arranged parallel to the axial guide groove of the housing, one end of the control rod is rotationally connected with the guide block where the angle sensor is installed through the threaded hole of the cover plate, and the other end of the control rod is located outside the housing; the rod part of the control rod is provided with an external thread, and is matched with the threaded hole of the housing, so that the axial displacement of the control rod is realized through screwing, the guide block where the angle sensor is installed is further moved along the axial guide groove, and the control of the axial position of the connecting rod measurement mechanism is completed.

[0054] The utility model discloses through passive and active double mode calibration, combines the real-time feedback of angle sensor, solves the problem of inaccurate throttle opening in traditional open loop control, ensures the accurate calibration of the position of large horsepower (100%) and small horsepower (0%), reduces the motor locked-rotor risk, prolongs the equipment life.

[0055] The technical solutions are further described below with reference to the drawings:

[0056] In one embodiment, referring to Figure 1 , 2 , the embodiment of the throttle valve calibration device includes a housing, an angle sensor 8, a three-jaw locking mechanism, a connecting rod measuring mechanism, and a calibration measuring module. The three-jaw locking mechanism is used to connect and fix the device with the electronic throttle valve to be calibrated, keeping the electronic throttle valve and the mechanism coaxial. The driving mechanism is used for the rotation control of the connecting rod mechanism, and the connecting rod mechanism is used for the calibration and measurement of the electronic throttle valve.

[0057] In one embodiment, the housing is coaxially fixedly connected by a front housing 1, a rear housing 2, and a cover plate 5. The front housing 1 is an annular structure with a central through hole and an L-shaped radial cross section. The main body of the rear housing 2 is a hollow sleeve structure, one end of which is coaxially fixedly installed with an annular disc, the inner ring surface of which extends axially to the front housing 1, and the central through hole of the front housing 1 is coaxially installed with the same diameter. The outer ring surface of the annular disc is coaxially fixed with the peripheral surface of the front housing to form a cavity for installing the three-jaw locking mechanism. The other end of the rear housing 2 is packaged with the cover plate 5, and the sleeve structure is a cavity for installing the connecting rod measuring mechanism.

[0058] Specifically, three radial through grooves are uniformly distributed on the outer end surface of the front housing 1, which are used to install three claw seats as radial displacement guide grooves 101 of the claw seats.

[0059] Specifically, two axial through grooves are symmetrically arranged on the outer peripheral surface of the rear housing 2, and a sensor guide block 9 and a driving gear guide block 16 are respectively installed in the two axial through grooves as axial displacement guide grooves 201 of the guide blocks.

[0060] In one embodiment, referring to Figure 2 , the three-jaw locking mechanism includes a chuck motor bracket 3, a chuck motor 4, a claw 11, a claw spring 12, a chuck body 13, a chuck driving gear 14, and a claw seat 15. The outer periphery of the chuck body 13 is provided with a gear slot to form a chuck body gear 131, and the end surface is provided with a chuck body flat thread 132. The claw 11 is an L-shaped plate, one side of which is parallel to the axial direction of the chuck body 13, and the other side is parallel to the end surface of the chuck body 13. The other end is fixedly installed on the claw seat 15. The claw seat 15 is an I-shaped block structure, the upper end surface of which is provided with the claw 11, and the lower end surface is provided with a flat thread which is engaged with the chuck body flat thread 132. The two side grooves are clamped in the radial displacement guide grooves 101.

[0061] Specifically, the chuck body 13 is rotatably connected to the circumferential surface of the extended portion of the inner ring surface of the annular disk, and the axial displacement during rotation is limited by the retaining spring 12. The chuck motor 4 is mounted on the outer end face of the annular disk of the rear housing via the chuck motor bracket 3. Its output shaft passes through the annular disk, and a chuck drive gear 14 is installed at the output end, meshing with the chuck body gear 131. The chuck motor 4 drives the chuck drive gear 14 and the chuck body gear 131 to rotate, and then the rotational motion of the chuck body 13 is converted into linear motion of the chuck body 13 and the jaws 11 along the radial displacement guide groove 101 by the chuck body planar thread 132. The intake pipe 27 is locked by adjusting the radial movement position.

[0062] In one embodiment, refer to Figure 4 As shown, the linkage measuring mechanism includes a sensor guide block 9, a drive gear guide block 16, a first measuring rod 19, a second measuring rod 20, a first connecting shaft 21, a linear connecting arm 22, a second connecting shaft 23, a third connecting shaft 24, a fourth connecting shaft 25, a U-shaped connecting arm 26, and a fixed rod 29. The first measuring rod 19, the second measuring rod 20, the linear connecting arm 22, and the U-shaped connecting arm 26 constitute a linkage structure.

[0063] Specifically, fixing rods 29 are fixed to the outer sides of the two arms of the U-shaped connecting arm 26. The two fixing rods 29 are located radially on the rear housing 2 and are coaxial, and their axial direction is located in the plane of the U-shaped connecting arm 26. A sensor guide block 9 is fixed to the end of one fixing rod 29, and a drive gear guide block 16 is rotatably connected to the end of the other fixing rod 29. The sensor guide block 9 and the drive gear guide block 16 are located in the axial displacement guide groove 201 of the rear housing 2.

[0064] Specifically, the first measuring rod 19 is a straight rod, with its top end rotatably connected to the U-shaped connecting arm 26 via the third connecting shaft 24, and a spherical contact is installed at its bottom end, with the spherical contact facing the throttle plate 28.

[0065] Specifically, the second measuring rod 20 is a bent rod, the top of which is rotatably connected to the U-shaped connecting arm 26 via the fourth connecting shaft 25, and the bottom is equipped with a spherical contact, which faces the throttle plate 28.

[0066] Specifically, the two ends of the linear connecting arm 22 are rotatably connected to the lower ends of the first measuring rod 19 and the second measuring rod 20 via the second connecting shaft 23 and the first connecting shaft 21, respectively.

[0067] In one embodiment, refer to Figure 3 , 4As shown, the calibration measurement module includes a drive motor support 6, a drive motor 7, an angle sensor 8, a control rod 10, a drive gear 17, a drive motor gear 18, a transmission assembly composed of the drive gear 17 and the drive motor gear 18, and the rotation angle of the drive gear 17 is transmitted to the fixed rod 29.

[0068] Specifically, the angle sensor 8 is fixedly installed on the outside of the sensor guide block 9 and is used to measure the rotation angle transmitted by the fixed rod 29.

[0069] Specifically, the drive motor 7 is fixedly installed on the outside of the drive gear guide block 16 through the drive motor support 6, and the drive motor gear 18 is installed on the output shaft of the drive motor 7.

[0070] Specifically, the drive gear 17 is sleeved on the end of the fixed rod 29 and is engaged with the drive motor gear 18 to form a transmission assembly.

[0071] Specifically, the control rod 10 is a straight rod, the rod portion is provided with external threads, one end of the control rod 10 penetrates through the threaded hole in the cover plate 5, and the end of the control rod 10 is rotationally connected with the sensor guide block 9. The axial displacement of the sensor guide block 9 is controlled by screwing the control rod 10, and then the axial displacement of the entire linkage measurement mechanism is controlled by the fixed rod 29, so that the contact and separation with the throttle blade are realized.

[0072] In one embodiment, referring to Figure 5 As shown, a specific operation of a throttle calibration device fixed to an intake pipe is as follows:

[0073] Before calibration, the three claws 11 are inserted into the electronic throttle intake pipe 27, the chuck motor 4 is powered, the chuck drive gear 14 installed on the chuck motor 4 is rotated, the chuck body 13 is driven to rotate through gear engagement, the chuck body 13 is provided with a flat thread 132 at the front end. The claw seat 15 (number 3) is engaged with the flat thread, and when the chuck body 13 rotates, the claw 11 is driven to move along the radial displacement guide groove 101, and when the claw 11 moves to the intake pipe 27, the three claws 11 are used to lock the intake pipe 27. After locking is completed, the chuck motor 4 is powered off.

[0074] After the calibration test is completed, the claw motor 4 is powered in reverse, the claw 11 is separated from the intake pipe, and the fixation is released.

[0075] In one embodiment, referring to Figure 6 As shown, a specific operation of a throttle calibration device for passive measurement of a throttle is as follows:

[0076] After securing the throttle intake pipe 27 with the three-jaw locking mechanism, release the locking state of the drive motor 7, rotate the control lever 10, and push the connecting rod measuring mechanism (connecting rod measuring mechanism) towards the throttle plate 28 through the sensor guide block 9, so that the first measuring rod 19 and the second measuring rod 20 of the connecting rod mechanism remain in contact with the throttle plate 28. Since the first measuring rod 19 and the second measuring rod 20 of the connecting rod mechanism are always in a parallel state, the angle of the throttle plate 28 is the same as the angle of the U-shaped connecting arm 26, and the corresponding angle of the throttle plate 28 can be measured by the angle sensor 8 installed on the U-shaped connecting arm 26.

[0077] After measuring a certain angle, adjust the throttle opening and rotate the throttle plate 28. Repeat the above steps as needed to complete the measurement of other angles.

[0078] When the measurement is completely finished, rotate the control lever 10 in the opposite direction. This will push the connecting rod measuring mechanism away from the throttle plate 28 through the sensor guide block 9, release the locking of the pawl 11, and end the measurement.

[0079] In one embodiment, refer to Figure 7 As shown, a throttle calibration device performs active throttle calibration in the following ways:

[0080] After securing the throttle intake pipe 27 with the three-jaw locking mechanism, the locking state of the drive motor 7 is released. The U-shaped connecting arm 26 is rotated to a preset angle via the drive motor 7 and angle sensor 8, while the drive motor 7 remains locked. The electronic throttle control is then released, allowing the electronic throttle to remain free. The control lever 10 is rotated, and the sensor guide block 9 pushes the linkage measuring mechanism towards the throttle plate 28, ensuring that the first measuring lever 19 and the second measuring lever 20 of the linkage mechanism remain in contact with the throttle plate 28. Since the first measuring lever 19 and the second measuring lever 20 of the linkage mechanism are always parallel, the angle of the throttle plate 28 and the angle of the U-shaped connecting arm 26 are the same, enabling active control and calibration of the throttle angle.

[0081] After a certain angle is calibrated, repeat the above operation to adjust the U-shaped connecting arm 26 to the new calibration angle to complete the calibration.

[0082] When the calibration is completely finished, rotate the control lever 10 in the opposite direction. This will push the connecting rod measuring mechanism away from the throttle plate 28 through the sensor guide block 9, releasing the locking of the pawl 11 and ending the calibration.

[0083] Safety Warning

[0084] This device is a throttle calibration device. When using it, the relevant motors must be switched on and off as needed to avoid all motors being powered on at the same time, which could cause motor stalling and damage.

[0085] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model without departing from the principles and purposes of the utility model.

Claims

1. A throttle calibration device characterized by: The application relates to a three-jaw locking mechanism for a throttle valve. The shell is coaxially fixedly connected by a front shell, a rear shell and a cover plate, the front shell is an annular structure with a central through hole and an L-shaped radial section, the main body of the rear shell is a hollow sleeve structure, one end of the main body is coaxially fixedly provided with an annular disc, the inner ring surface of the annular disc extends axially to the front shell, the central through hole of the front shell is coaxially provided with the annular disc, the outer ring surface of the annular disc is coaxially fixed to the peripheral surface of the front shell to form a cavity for mounting the three-jaw locking mechanism, and the other end of the rear shell is provided with the cover plate.

2. The device of claim 1, wherein: The three claws of the three-jaw locking mechanism are uniformly distributed on the end surface of the front shell along the circumference, and the circumference is coaxial with the central through hole of the front shell; the three claws are synchronously radially moved through a driving assembly, and the three claws can be adapted to throttle valve intake pipes with different diameters.

3. The device of claim 2, wherein: Three radial grooves are uniformly distributed on the end surface of the front shell along the circumference and are used as radial moving guide grooves of the three claws; the claws are installed outside the radial moving guide grooves through claw seats; the claw seats are movably installed in the radial moving guide grooves, the top surface of the claw seat is provided with the claw, and the bottom surface of the claw seat extends into the front shell and is provided with a flat thread which is connected with the driving assembly.

4. The device of claim 3, wherein: The driving assembly comprises a chuck motor and a chuck body provided with a central through hole, the outer peripheral surface of the chuck body is uniformly provided with gear grooves to form a chuck body gear, the end surface of the chuck body is coaxially provided with a flat thread which is engaged with the flat thread of the claw seat; the output shaft of the chuck motor is provided with a chuck driving gear which is engaged with the chuck body gear to drive the rotation of the chuck body, and then the flat thread of the chuck body drives the claw seat and the claw to move along the radial direction, and the coaxial degree of the locking process is ensured through the radial moving guide groove.

5. The device of claim 4, wherein: The connecting arm is used as a fixed end and is connected with the calibration measurement module through a fixed rod; the fixed rod and the connecting arm are located in the same plane and are perpendicularly fixed on the two side arms to transmit or control the rotation angle of the connecting arm; the top ends of the first measuring rod and the second measuring rod are rotationally connected with the connecting arm, the bottom ends of the first measuring rod and the second measuring rod are used as free ends of the connecting rod measurement mechanism and face the throttle valve piece, and the bottom ends of the first measuring rod and the second measuring rod are parallel to the two side arms of the connecting arm to realize error-free transmission of the angle. The bottom ends of the first measuring rod and the second measuring rod are spherical contact points. The two ends of the straight connecting arm are respectively rotationally connected with the lower ends of the first measuring rod and the second measuring rod through a second connecting shaft and a first connecting shaft.

6. The throttle calibration device of claim 5, wherein: ​ 7. The throttle calibration device of claim 5, wherein: ​ 8. The throttle calibration device of claim 5, wherein: The calibration measurement module comprises an angle sensor and a driving motor, the angle sensor is used to measure the rotation angle of the throttle blade, and the driving motor is used to control the rotation angle of the fixed rod, thereby actively calibrating the rotation angle of the throttle blade.

9. The throttle calibration device of claim 8, wherein: The two ends of the fixed rod respectively pass through the shell along the radial direction, and are respectively installed in the axial guide grooves on the outer periphery of the shell through guide blocks, one end of the guide block extends out of the shell and is provided with the angle sensor, and the other end of the guide block extends out of the shell and is provided with a driving motor support; and the other end of the fixed rod is rotationally connected with the guide block at the end; The angle sensor is used to measure the rotation angle of the fixed rod and the U-shaped connecting arm; The driving motor support is provided with a driving motor and a transmission assembly, the driving motor is connected with the other end of the fixed rod through the transmission assembly, and is used to control the rotation angle of the fixed rod and the U-shaped connecting arm.

10. The throttle calibration device of claim 9, wherein: The calibration measurement module further comprises a control rod, the control rod is arranged parallel to the axial guide groove of the shell, one end of the control rod is rotationally connected with the guide block provided with the angle sensor through a threaded hole in the cover plate, and the other end of the control rod is located outside the shell; the rod part of the control rod is provided with an external thread, and is matched with a threaded hole in the shell, axial displacement of the control rod is realized by screwing, the guide block provided with the angle sensor is further moved along the axial guide groove, and control of the axial position of the connecting rod measurement mechanism is completed.

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