A camshaft torque detection device

Abstract

The application discloses a camshaft torque detection device, which comprises a rack, a support, a detection table and a controller, the support is installed on the rack and is used for bearing a workpiece, the detection table is installed on the rack and is symmetrically provided with an intake camshaft rotation detection mechanism and an exhaust camshaft rotation detection mechanism, the intake camshaft rotation detection mechanism can be positioned in butt joint with an intake camshaft and is provided with a first original point sensor, a first detection position sensor and a second detection position sensor, the exhaust camshaft rotation detection mechanism can be positioned in butt joint with an exhaust camshaft and is provided with a second original point sensor, a third detection position sensor and a fourth detection position sensor, and the controller is used for receiving a torque signal of the intake camshaft and a torque signal of the exhaust camshaft. The application can more easily identify abnormal conditions of torque change, can improve work efficiency, is convenient for automatic control of equipment and can avoid problems such as missed detection and false detection in manual operation.

Description

Technical Field

[0001] This invention relates to the field of automotive engine component testing technology, and in particular to a camshaft torque testing device. Background Technology

[0002] Currently, in the production and testing of automotive engine camshafts, torque testing of intake and exhaust camshafts largely relies on manual methods. Typically, personnel manually place the testing head on the camshaft and judge its condition by manual rotation. This testing method has low automation, depends on human experience, and is inherently uncertain. Firstly, because it's difficult to maintain consistent rotation speed and force, torque changes at different rotation positions are not easily identified, and anomalies are easily overlooked. Secondly, it's difficult to collect and save torque data in real time during manual testing, resulting in a lack of traceable data records. Furthermore, manual operation is prone to omissions and false positives due to operational negligence or non-standard procedures, failing to meet the requirements for stability, reliability, and automation in engine camshaft testing. Summary of the Invention

[0003] The purpose of this invention is to provide a camshaft torque detection device that can more easily identify abnormal torque changes, improve work efficiency, facilitate automated control of equipment, and avoid problems such as missed detections and false detections during manual operation.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A camshaft torque detection device includes a frame, a support, a detection table, and a controller; The support is mounted on the frame and is used to support the workpiece, which includes an intake camshaft and an exhaust camshaft. The testing platform is mounted on the frame and symmetrically equipped with an intake camshaft rotation testing mechanism and an exhaust camshaft rotation testing mechanism. The intake camshaft rotation testing mechanism can be docked and positioned with the intake camshaft to detect the torque signal of the intake camshaft. It is equipped with a first origin sensor, a first detection position sensor, and a second detection position sensor arranged sequentially along the rotation direction of the intake camshaft. The exhaust camshaft rotation testing mechanism can be docked and positioned with the exhaust camshaft to detect the torque signal of the exhaust camshaft. It is equipped with a second origin sensor, a third detection position sensor, and a fourth detection position sensor arranged sequentially along the rotation direction of the exhaust camshaft. The controller is used to receive the torque signal of the intake camshaft and the torque signal of the exhaust camshaft, and is electrically connected to the first origin sensor, the first detection position sensor, the second detection position sensor, the second origin sensor, the third detection position sensor, and the fourth detection position sensor, respectively.

[0005] As a preferred embodiment of the present invention, the testing station is provided with a first bracket, and the first bracket is mounted on the frame; The intake camshaft rotation detection mechanism includes a first drive mechanism, a first detection head, and a first torque sensor. The first detection head, the first origin sensor, the first detection position sensor, and the second detection position sensor are all mounted on the front side of the first bracket. The first detection head can be docked and positioned with the intake camshaft. The first origin sensor, the first detection position sensor, and the second detection position sensor are sequentially arranged on the outer periphery of the first detection head. The first drive mechanism and the first torque sensor are both mounted on the back side of the first bracket. The first drive mechanism can drive the first detection head to rotate. The first torque sensor is electrically connected to the controller and is used to detect the torque signal of the intake camshaft. The exhaust camshaft rotation detection mechanism includes a second drive mechanism, a second detection head, and a second torque sensor. The second detection head, the second origin sensor, the third detection position sensor, and the fourth detection position sensor are all mounted on the front side of the first bracket. The second detection head can be docked and positioned with the exhaust camshaft. The second origin sensor, the third detection position sensor, and the fourth detection position sensor are arranged sequentially on the outer periphery of the second detection head. The second drive mechanism and the second torque sensor are both mounted on the back side of the first bracket. The second drive mechanism can drive the second detection head to rotate. The second torque sensor is electrically connected to the controller and is used to detect the torque signal of the exhaust camshaft.

[0006] In a preferred embodiment of the present invention, the first driving mechanism includes a first transmission motor, a first bearing housing, a first main transmission shaft, a first driven transmission shaft, a first active bevel gear, and a first driven bevel gear. The first transmission motor and the first bearing housing are both fixed to the back side of the first bracket. The first main transmission shaft is vertically arranged. The first transmission motor is electrically connected to the controller. The power output end of the first transmission motor is fixedly connected to the upper end of the first main transmission shaft, and the lower end of the first main transmission shaft is rotatably connected to the first bearing housing. The first active bevel gear and the first torque sensor are both fixed to the first main transmission shaft. The first driven transmission shaft is rotatably connected to the first bracket. The extension direction of the first driven shaft is perpendicular to the extension direction of the first main transmission shaft. The first detection head is disposed at one end of the first driven transmission shaft. Multiple first connecting rods are evenly distributed between the first detection head and the first driven transmission shaft. One end of each first connecting rod is slidably connected to the first driven transmission shaft, and the other end of each first connecting rod is fixedly connected to the first detection head. A first buffer spring is sleeved on each first connecting rod. The first driven bevel gear is fixedly connected to the other end of the first driven transmission shaft, and the first active bevel gear meshes with the first driven bevel gear. The second drive mechanism includes a second drive motor, a second bearing housing, a second main drive shaft, a second driven drive shaft, a second driving bevel gear, and a second driven bevel gear. The second drive motor and the second bearing housing are both fixed to the back side of the first bracket. The second main drive shaft is vertically arranged. The second drive motor is electrically connected to the controller. The power output end of the second drive motor is fixedly connected to the upper end of the second main drive shaft, and the lower end of the second main drive shaft is rotatably connected to the second bearing housing. The second driving bevel gear and the second torque sensor are both fixed on the second main drive shaft. The second driven drive shaft is rotatably connected to the first bracket. The extension direction of the second driven shaft is perpendicular to the extension direction of the second main drive shaft. The second detection head is disposed at one end of the second driven drive shaft. Multiple second connecting rods are evenly distributed between the second detection head and the second driven drive shaft. One end of the second connecting rod is slidably connected to the second driven drive shaft, and the other end of the second connecting rod is fixedly connected to the second detection head. A second buffer spring is sleeved on the second connecting rod. The second driven bevel gear is fixedly connected to the other end of the second driven drive shaft, and the second driving bevel gear meshes with the second driven bevel gear.

[0007] As a preferred embodiment of the present invention, the testing platform is further provided with a second support, an X-axis moving mechanism and a Z-axis moving mechanism. The second support is connected to the frame through the X-axis moving mechanism, which can drive the second support to move along the X-axis direction. The first support is connected to the second support through the Z-axis moving mechanism, which can drive the first support to move along the Z-axis direction.

[0008] As a preferred embodiment of the present invention, the first detection head is provided with a first positioning hole, and the intake camshaft is provided with a first positioning pin; the second detection head is provided with a second positioning hole, and the exhaust camshaft is provided with a second positioning pin; when the X-axis moving mechanism drives the second bracket to move into position along the X-axis direction, and the Z-axis moving mechanism drives the first bracket to move into position along the Z-axis direction, the first positioning pin can be inserted into the first positioning hole, and the second positioning pin can be inserted into the second positioning hole.

[0009] As a preferred embodiment of the present invention, the detection platform is provided with a first warning light at both the first minimum measurement value position sensor and the first maximum measurement value position sensor. The first warning light is electrically connected to the controller. When it is detected that the first positioning pin is not inserted into the first positioning hole, the first warning light will light up to alarm. The detection platform is equipped with a second warning light at both the second minimum measurement value position sensor and the second maximum measurement value position sensor. The second warning light is electrically connected to the controller. When it is detected that the second positioning pin is not inserted into the second positioning hole, the second warning light will light up to trigger an alarm.

[0010] As a preferred embodiment of the present invention, the X-axis moving mechanism includes a first cylinder and two first linear guide rail modules. The first cylinder is fixed on the frame, and the push rod of the first cylinder is fixedly connected to the second bracket. The two first linear guide rail modules are disposed on the frame and respectively arranged on both sides of the first cylinder. Each first linear guide rail module includes a first slider and a first guide rail. The first guide rail is fixedly connected to the frame and extends along the X-axis direction. The lower end of the first slider slides on the first guide rail, and the upper end of the first slider is fixedly connected to the second bracket.

[0011] As a preferred embodiment of the present invention, the Z-axis moving mechanism includes a second cylinder and two second linear guide rail modules. The second cylinder is fixed on the second bracket, and the push rod of the second cylinder is fixedly connected to the first bracket through a first connector. The two second linear guide rail modules are disposed on the second bracket and respectively arranged on both sides of the second cylinder. The second linear guide rail module includes a second slider and a second guide rail. The second guide rail is fixed on the first bracket and extends along the Z-axis direction. The second slider is fixed on the second bracket and is slidably connected to the second guide rail.

[0012] As a preferred embodiment of the present invention, the frame is further provided with a workpiece limiting mechanism, which includes a third bracket, a third cylinder, a connecting plate, and a clamping column; the third bracket is fixed on the frame, and the third cylinder is connected to the top of the third bracket through a Y-axis moving mechanism, which can drive the third cylinder to move along the Y-axis direction; the push rod of the third cylinder is fixedly connected to the connecting plate, and the third cylinder can drive the connecting plate to move up and down along the Z-axis direction; the clamping column is fixed to the bottom of the connecting plate and can abut against the workpiece; the connecting plate is provided with a third positioning hole, and the workpiece is provided with a third positioning pin, which can be inserted into the third positioning hole when the third cylinder drives the connecting plate to move downward.

[0013] As a preferred embodiment of the present invention, the Y-axis moving mechanism includes a fourth cylinder, a slide table, and two third linear guide rail modules, which are symmetrically arranged on the top of the third bracket. Each third linear guide rail module includes a third slider and a third guide rail. The third guide rail is fixed to the top of the third bracket and extends along the Y-axis direction. The lower end of the third slider is slidably connected to the third guide rail, the upper end of the third slider is fixedly connected to the bottom of the slide table, and the top of the slide table is fixedly connected to the third cylinder.

[0014] The camshaft torque detection device provided by this invention has the following advantages compared with the prior art: The camshaft torque detection device of the present invention can simultaneously monitor the torque values ​​of the intake camshaft and the exhaust camshaft in real time. Compared with the existing technology where personnel judge the state of the camshaft by manually rotating it, on the one hand, it can make the torque measurement more accurate and make it easier to identify abnormal torque changes; on the other hand, it can improve work efficiency, facilitate the automated control of equipment, and avoid problems such as missed detection or false detection caused by operational negligence or non-standard procedures in manual operation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0016] Figure 1 This is a schematic diagram of the structure of a camshaft torque detection device provided in an embodiment of the present invention before the workpiece is in place; Figure 2 It is at Figure 1 A magnified view of region A in the structure shown; Figure 3 It is at Figure 1 A magnified view of region B in the structure shown. Figure 4 yes Figure 1 Side view of the structure shown; Figure 5 It is at Figure 4 A magnified view of region C in the structure shown; Figure 6 yes Figure 1 Rear view of the structure shown; Figure 7 It is at Figure 6 A magnified view of region D in the structure shown; Figure 8 This is a schematic diagram of a camshaft torque detection device provided in an embodiment of the present invention, in the state of a hidden support and a workpiece limiting mechanism; Figure 9 It is at Figure 8 A magnified view of region E in the structure shown.

[0017] Marked in the image: 100 racks; 200 seats; Testing platform 300; Intake camshaft rotation detection mechanism 310; First origin sensor 311; First detection position sensor 312; Second detection position sensor 313; First drive mechanism 314; First transmission motor 3141; First bearing housing 3142; First main drive shaft 3143; First driven drive shaft 3144; First driving bevel gear 3145; First driven bevel gear 3146; First connecting rod 3147; First buffer spring 3148; First detection head 315; First positioning hole 3151; First torque sensor 316; First warning light 317; Exhaust camshaft rotation detection mechanism 320; Second origin sensor 321; Third detection position sensor 322; Fourth detection... Position sensor 323; second drive mechanism 324; second transmission motor 3241; second bearing seat 3242; second main drive shaft 3243; second driven drive shaft 3244; second driving bevel gear 3245; second driven bevel gear 3246; second detection head 325; second positioning hole 3251; second torque sensor 326; second warning light 327; first bracket 330; second bracket 340; X-axis moving mechanism 350; first cylinder 351; first linear guide module 352; first slider 352a; first guide rail 352b; Z-axis moving mechanism 360; second cylinder 361; second linear guide module 362; second slider 362a; second guide rail 362b; Workpiece limiting mechanism 400; third bracket 410; third cylinder 420; connecting plate 430; third positioning hole 431; clamping column 440; Y-axis moving mechanism 450; fourth cylinder 451; slide table 452; third linear guide module 453; third slider 453a; third guide rail 453b; Workpiece 500; Intake camshaft 510; First locating pin 511; Exhaust camshaft 520; Third locating pin 530. Detailed Implementation

[0018] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0019] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. It should be understood that the terms "first," "second," etc., are used in this invention to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this invention, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information.

[0020] Please see Figures 1 to 9 A preferred embodiment of the present invention provides a camshaft torque detection device, which includes a frame 100, a support 200, a detection table 300 and a controller.

[0021] The support 200 is mounted on the frame 100 and is used to support the workpiece 500, which includes an intake camshaft 510 and an exhaust camshaft 520.

[0022] The testing platform 300 is mounted on the frame 100 and symmetrically provides an intake camshaft 510 rotation detection mechanism 310 and an exhaust camshaft 520 rotation detection mechanism 320. The intake camshaft 510 rotation detection mechanism 310 can dock and be positioned with the intake camshaft 510 to detect the torque signal of the intake camshaft 510. It is provided with a first origin sensor 311, a first detection position sensor 312 and a second detection position sensor 313 arranged sequentially along the rotation direction of the intake camshaft 510. The exhaust camshaft 520 rotation detection mechanism 320 can dock and be positioned with the exhaust camshaft 520 to detect the torque signal of the exhaust camshaft 520. It is provided with a second origin sensor 321, a third detection position sensor 322 and a fourth detection position sensor 323 arranged sequentially along the rotation direction of the exhaust camshaft 520.

[0023] The controller is used to receive the torque signal of the intake camshaft 510 and the torque signal of the exhaust camshaft 520, and is electrically connected to the first origin sensor 311, the first detection position sensor 312, the second detection position sensor 313, the second origin sensor 321, the third detection position sensor 322, and the fourth detection position sensor 323, respectively.

[0024] The camshaft torque detection device of the present invention supports a workpiece 500, including an intake camshaft 510 and an exhaust camshaft 520, via a support 200. During operation, the intake camshaft 510 is docked and positioned with the intake camshaft rotation detection mechanism 310, which transmits the detected torque signal of the intake camshaft 510 to the controller. Simultaneously, the exhaust camshaft 520 is docked and positioned with the exhaust camshaft rotation detection mechanism 320, which transmits the detected torque signal of the exhaust camshaft 520 to the controller. The controller then analyzes and processes the received torque signals to obtain the torque values ​​of the intake camshaft 510 and the exhaust camshaft 520, respectively. Furthermore, by setting multiple position sensors arranged sequentially along the rotation direction of the corresponding camshafts, the rotation data of the camshafts at various positions can be accurately captured, and the real-time position data can be fed back to the controller, ensuring accurate recording of the position at every moment. The operator can analyze the rotation state based on the sensor signals from the controller to further guide the work process and adjust the detection strategy.

[0025] Specifically, during the rotation of the intake camshaft 510, the controller records the torque signal every 0.01 seconds, and averages and processes the two torque signals detected at the corresponding positions of the first detection position sensor 312 and the second detection position sensor 313 to obtain the maximum torque value output of the intake camshaft 510; when the maximum value exceeds the set value, the device stops working and alarms for abnormality.

[0026] Specifically, during the rotation of the exhaust camshaft 520, the controller records the torque signal every 0.01 seconds, and averages and processes the two torque signals detected at the corresponding positions of the third detection position sensor 322 and the fourth detection position sensor 323 to obtain the maximum torque value output of the exhaust camshaft 520; when the maximum value exceeds the set value, the device stops working and alarms for abnormality.

[0027] Furthermore, after the torque value of a workpiece 500 is detected, the setting of the first origin sensor 311 / second origin sensor 321 can record the initial position of the intake camshaft 510 / exhaust camshaft 520, ensuring that when the torque value of the next workpiece 500 is detected, the rotation angle value of the next workpiece 500 at the corresponding position of the corresponding position sensor is consistent, thereby improving the accuracy and consistency of batch detection of workpieces 500.

[0028] As can be seen, the camshaft torque detection device of the present invention can simultaneously monitor the torque values ​​of the intake camshaft 510 and the exhaust camshaft 520 in real time. Compared with the prior art method of judging the camshaft status by manual rotation, on the one hand, it can make the torque measurement more accurate and more easily identify abnormal torque changes; on the other hand, it can improve work efficiency, facilitate the automated control of equipment, and avoid problems such as missed detection or false detection caused by operational negligence or non-standard procedures in manual operation.

[0029] The testing station 300 is provided with a first bracket 330, which is mounted on the frame 100.

[0030] The intake camshaft rotation detection mechanism 310 includes a first drive mechanism 314, a first detection head 315, and a first torque sensor 316. The first detection head 315, the first origin sensor 311, the first detection position sensor 312, and the second detection position sensor 313 are all mounted on the front side of the first bracket 330. The first detection head 315 can be docked and positioned with the intake camshaft 510. The first origin sensor 311, the first detection position sensor 312, and the second detection position sensor 313 are arranged sequentially on the outer periphery of the first detection head 315. The first drive mechanism 314 and the first torque sensor 316 are both mounted on the back side of the first bracket 330. The first drive mechanism 314 can drive the first detection head 315 to rotate. The first torque sensor 316 is electrically connected to the controller and is used to detect the torque signal of the intake camshaft 510. During operation, the first drive mechanism 314 drives the first main drive shaft 3143, the first active bevel gear 3145, and the first torque sensor 316 to rotate via the first drive motor 3141. The first active bevel gear 3145 meshes with the first driven bevel gear 3146 mounted on the first driven drive shaft 3144, thereby driving the first detection head 315 to rotate. Thus, the first torque sensor 316 can monitor the torque signal of the first detection head 315 in real time during rotation and transmit the data to the controller. Furthermore, the first buffer spring 3148 effectively reduces the impact of vibration during device operation, improving measurement stability.

[0031] The exhaust camshaft rotation detection mechanism 320 includes a second drive mechanism 324, a second detection head 325, and a second torque sensor 326. The second detection head 325, the second origin sensor 321, the third detection position sensor 322, and the fourth detection position sensor 323 are all mounted on the front side of the first bracket 330. The second detection head 325 can be docked and positioned with the exhaust camshaft 520. The second origin sensor 321, the third detection position sensor 322, and the fourth detection position sensor 323 are arranged sequentially on the outer periphery of the second detection head 325. The second drive mechanism 324 and the second torque sensor 326 are both mounted on the back side of the first bracket 330. The second drive mechanism 324 can drive the second detection head 325 to rotate. The second torque sensor 326 is electrically connected to the controller and is used to detect the torque signal of the exhaust camshaft 520. During operation, the second drive mechanism 324 drives the second main drive shaft 3243, the second active bevel gear 3245, and the second torque sensor 326 to rotate via the second drive motor 3241. The second active bevel gear 3245 meshes with the second driven bevel gear 3246 mounted on the second driven drive shaft 3244, thereby driving the second detection head 325 to rotate. Thus, the second torque sensor 326 can monitor the torque signal of the second detection head 325 in real time during rotation and transmit the data to the controller. Furthermore, the second buffer spring 3248 effectively reduces the impact of vibration during device operation, improving measurement stability.

[0032] For example, the testing station 300 is further provided with a second support 340, an X-axis moving mechanism 350 and a Z-axis moving mechanism 360. The second support 340 is connected to the frame 100 through the X-axis moving mechanism 350, and the X-axis moving mechanism 350 can drive the second support 340 to move along the X-axis direction. The first support 330 is connected to the second support 340 through the Z-axis moving mechanism 360, and the Z-axis moving mechanism 360 can drive the first support 330 to move along the Z-axis direction.

[0033] During operation, before the inspection begins, the X-axis moving mechanism 350 first activates, driving the second support 340 to move relative to the frame 100 along the X-axis, bringing the inspection mechanism closer to or further away from the workpiece 500 at a predetermined position. Subsequently, the Z-axis moving mechanism 360 activates, driving the first support 330 to rise and fall along the Z-axis, aligning the inspection mechanism on the first support 330 with the workpiece 500 in the height direction. Through the coordinated movement of the X and Z axes, the first support 330 accurately reaches the inspection position. Therefore, this device, through its hierarchical moving structure between the frame 100, the first support 330, and the second support 340, provides the inspection device with adjustable spatial position, adapting to different workpiece 500 installation positions, improving the flexibility and reliability of inspection alignment, reducing errors caused by manual adjustments, and exhibiting a high degree of automation.

[0034] In this embodiment, the X-axis moving mechanism 350 includes a first cylinder 351 and two first linear guide rail modules 352. The first cylinder 351 is fixed on the frame 100, and its push rod is fixedly connected to the second bracket 340. The two first linear guide rail modules 352 are disposed on the frame 100 and respectively arranged on both sides of the first cylinder 351. Each first linear guide rail module 352 includes a first slider 352a and a first guide rail 352b. The first guide rail 352b is fixedly connected to the frame 100 and extends along the X-axis direction. The lower end of the first slider 352a slides on the first guide rail 352b, and the upper end of the first slider 352a is fixedly connected to the second bracket 340. During operation, the first cylinder 351 actuates, and its push rod drives the second bracket 340 to move along the X-axis direction. During the movement, the second bracket 340 is guided and supported by the first linear guide rail modules 352 on both sides, ensuring that the second bracket 340 moves smoothly along a predetermined straight trajectory. This structure, through the cooperation of the first cylinder 351 and the first linear guide module 352, makes the movement of the second bracket 340 in the X-axis direction more stable and reliable, reduces offset and shaking, and improves the overall movement accuracy.

[0035] In this embodiment, the Z-axis moving mechanism 360 includes a second cylinder 361 and two second linear guide rail modules 362. The second cylinder 361 is fixed to the second bracket 340, and the push rod of the second cylinder 361 is fixedly connected to the first bracket 330 through a first connector. The two second linear guide rail modules 362 are disposed on the second bracket 340 and respectively arranged on both sides of the second cylinder 361. Each second linear guide rail module 362 includes a second slider 362a and a second guide rail 362b. The second guide rail 362b is fixed to the first bracket 330 and extends along the Z-axis direction. The second slider 362a is fixed to the second bracket 340 and is slidably connected to the second guide rail 362b. During operation, the second cylinder 361 actuates, driving the first bracket 330 to rise or fall along the Z-axis direction through the connector. During the movement, the first bracket 330 is guided by the second linear guide rail modules 362 on both sides to ensure the stability of the vertical movement of the first bracket 330. This structure enables the first support 330 to move precisely up and down in the Z-axis direction, allowing the detection head to be accurately aligned with the workpiece at a height of 500, thus improving the alignment consistency during the detection process.

[0036] For example, the first detection head 315 is provided with a first positioning hole 3151, and the intake camshaft 510 is provided with a first positioning pin 511; the second detection head 325 is provided with a second positioning hole 3251, and the exhaust camshaft 520 is provided with a second positioning pin; when the X-axis moving mechanism 350 drives the second bracket 340 to move into position along the X-axis direction, and the Z-axis moving mechanism 360 drives the first bracket 330 to move into position along the Z-axis direction, the first positioning pin 511 can be inserted into the first positioning hole 3151, and the second positioning pin can be inserted into the second positioning hole 3251. During operation, after the X-axis moving mechanism 350 and the Z-axis moving mechanism 360 complete their position adjustments, the first locating pin 511 on the intake camshaft 510 aligns and engages with the first locating hole 3151 on the first detection head 315. Simultaneously, the second locating pin on the exhaust camshaft 520 engages with the second locating hole 3251 on the second detection head 325, thus establishing a fixed connection between the detection head and the corresponding camshaft. Through the engagement of the locating hole and the locating pin, the detection head maintains a stable relative position with the camshaft during the detection process, effectively preventing relative slippage and ensuring the stability of torque transmission and detection data.

[0037] For example, the testing platform 300 is equipped with a first warning light 317 at both the first detection position sensor 312 and the second detection position sensor 313. The first warning light 317 is electrically connected to the controller. When the first positioning pin 511 is detected not being inserted into the first positioning hole 3151, the first warning light 317 illuminates as an alarm. The testing platform 300 is also equipped with a second warning light 327 at both the third detection position sensor 322 and the fourth detection position sensor 323. The second warning light 327 is electrically connected to the controller. When the second positioning pin is detected not being inserted into the second positioning hole 3251, the second warning light 327 illuminates as an alarm. Thus, during the preparation or testing process, the position sensors detect the insertion status of the positioning pin and the positioning hole. When a positioning pin is found to be not fully inserted at any detection position, the corresponding warning light immediately illuminates, indicating an abnormal detection status. This intuitive warning light method allows the operator to quickly identify whether the positioning is correct, avoiding torque testing when the positioning is incorrect, thereby reducing the risk of false detection or abnormal equipment operation.

[0038] For example, the frame 100 is further provided with a workpiece limiting mechanism 400, which includes a third bracket 410, a third cylinder 420, a connecting plate 430, and a clamping column 440; the third bracket 410 is fixed on the frame 100, and the third cylinder 420 is connected to the top of the third bracket 410 through a Y-axis moving mechanism 450, which can drive the third cylinder 420 to move along the Y-axis direction; the pushing of the third cylinder 420... The rod is fixedly connected to the connecting plate 430. The third cylinder 420 can drive the connecting plate 430 to move up and down along the Z-axis. The clamping column 440 is fixed to the bottom of the connecting plate 430 and can abut against the workpiece 500. The connecting plate 430 is provided with a third positioning hole 431, and the workpiece 500 is provided with a third positioning pin 530. When the third cylinder 420 drives the connecting plate 430 to move downward, the third positioning pin 530 can be inserted into the third positioning hole 431. Thus, after the workpiece 500 is placed in position, the Y-axis moving mechanism 450 drives the third cylinder 420 to move above the workpiece 500. Then, the third cylinder 420 actuates, driving the connecting plate 430 and the clamping column 440 to move downward along the Z-axis, so that the clamping column 440 contacts the workpiece 500 and completes the clamping. At the same time, the third positioning pin 530 on the workpiece 500 is inserted into the third positioning hole 431 to achieve the positioning of the workpiece 500. Thus, through the dual action of clamping and positioning, the workpiece 500 is kept in a stable position during the inspection process, preventing displacement or loosening during torque testing.

[0039] In this embodiment, the Y-axis moving mechanism 450 includes a fourth cylinder 451, a slide table 452, and two third linear guide rail modules 453. The two third linear guide rail modules 453 are symmetrically arranged on the top of the third support 410. Each third linear guide rail module 453 includes a third slider 453a and a third guide rail 453b. The third guide rail 453b is fixed to the top of the third support 410 and extends along the Y-axis. The lower end of the third slider 453a is slidably connected to the third guide rail 453b, and the upper end of the third slider 453a is fixedly connected to the bottom of the slide table 452. The top of the slide table 452 is fixedly connected to the third cylinder 420. During operation, the fourth cylinder 451 actuates, driving the third cylinder 420 to move along the Y-axis via the slide table 452. The slide table 452 maintains linear motion under the guidance of the third linear guide rail modules 453, enabling the third cylinder 420 to adjust its position in the transverse direction of the workpiece 500. This structure enables the workpiece 500 limiting mechanism 400 to have lateral position adjustment capability, thereby adapting to different installation positions of the workpiece 500 and improving the versatility of the device.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A camshaft torque detection device, characterized in that, include: frame; A support, mounted on the frame, is used to support workpieces, the workpieces including an intake camshaft and an exhaust camshaft; A testing platform, mounted on the frame, is symmetrically equipped with an intake camshaft rotation testing mechanism and an exhaust camshaft rotation testing mechanism. The intake camshaft rotation testing mechanism can be docked and positioned with the intake camshaft to detect the torque signal of the intake camshaft. It is equipped with a first origin sensor, a first detection position sensor, and a second detection position sensor arranged sequentially along the rotation direction of the intake camshaft. The exhaust camshaft rotation testing mechanism can be docked and positioned with the exhaust camshaft to detect the torque signal of the exhaust camshaft. It is equipped with a second origin sensor, a third detection position sensor, and a fourth detection position sensor arranged sequentially along the rotation direction of the exhaust camshaft. The controller is used to receive the torque signal of the intake camshaft and the torque signal of the exhaust camshaft, and is electrically connected to the first origin sensor, the first detection position sensor, the second detection position sensor, the second origin sensor, the third detection position sensor, and the fourth detection position sensor, respectively.

2. The camshaft torque detection device according to claim 1, characterized in that, The testing station is provided with a first bracket, which is mounted on the frame. The intake camshaft rotation detection mechanism includes a first drive mechanism, a first detection head, and a first torque sensor. The first detection head, the first origin sensor, the first detection position sensor, and the second detection position sensor are all mounted on the front side of the first bracket. The first detection head can be docked and positioned with the intake camshaft. The first origin sensor, the first detection position sensor, and the second detection position sensor are sequentially arranged on the outer periphery of the first detection head. The first drive mechanism and the first torque sensor are both mounted on the back side of the first bracket. The first drive mechanism can drive the first detection head to rotate. The first torque sensor is electrically connected to the controller and is used to detect the torque signal of the intake camshaft. The exhaust camshaft rotation detection mechanism includes a second drive mechanism, a second detection head, and a second torque sensor. The second detection head, the second origin sensor, the third detection position sensor, and the fourth detection position sensor are all mounted on the front side of the first bracket. The second detection head can be docked and positioned with the exhaust camshaft. The second origin sensor, the third detection position sensor, and the fourth detection position sensor are arranged sequentially on the outer periphery of the second detection head. The second drive mechanism and the second torque sensor are both mounted on the back side of the first bracket. The second drive mechanism can drive the second detection head to rotate. The second torque sensor is electrically connected to the controller and is used to detect the torque signal of the exhaust camshaft.

3. The camshaft torque detection device according to claim 2, characterized in that, The first drive mechanism includes a first drive motor, a first bearing housing, a first main drive shaft, a first driven drive shaft, a first driving bevel gear, and a first driven bevel gear. The first drive motor and the first bearing housing are both fixed to the back side of the first bracket. The first main drive shaft is vertically arranged. The first drive motor is electrically connected to the controller. The power output end of the first drive motor is fixedly connected to the upper end of the first main drive shaft, and the lower end of the first main drive shaft is rotatably connected to the first bearing housing. The first driving bevel gear and the first torque sensor are both fixed to the first main drive shaft. The first driven drive shaft is rotatably connected to the first bracket. The extension direction of the first driven shaft is perpendicular to the extension direction of the first main drive shaft. The first detection head is disposed at one end of the first driven drive shaft. Multiple first connecting rods are evenly distributed between the first detection head and the first driven drive shaft. One end of each first connecting rod is slidably connected to the first driven drive shaft, and the other end of each first connecting rod is fixedly connected to the first detection head. A first buffer spring is sleeved on each first connecting rod. The first driven bevel gear is fixedly connected to the other end of the first driven drive shaft, and the first driving bevel gear meshes with the first driven bevel gear. The second drive mechanism includes a second drive motor, a second bearing housing, a second main drive shaft, a second driven drive shaft, a second driving bevel gear, and a second driven bevel gear. The second drive motor and the second bearing housing are both fixed to the back side of the first bracket. The second main drive shaft is vertically arranged. The second drive motor is electrically connected to the controller. The power output end of the second drive motor is fixedly connected to the upper end of the second main drive shaft, and the lower end of the second main drive shaft is rotatably connected to the second bearing housing. The second driving bevel gear and the second torque sensor are both fixed on the second main drive shaft. The second driven drive shaft is rotatably connected to the first bracket. The extension direction of the second driven shaft is perpendicular to the extension direction of the second main drive shaft. The second detection head is disposed at one end of the second driven drive shaft. Multiple second connecting rods are evenly distributed between the second detection head and the second driven drive shaft. One end of the second connecting rod is slidably connected to the second driven drive shaft, and the other end of the second connecting rod is fixedly connected to the second detection head. A second buffer spring is sleeved on the second connecting rod. The second driven bevel gear is fixedly connected to the other end of the second driven drive shaft, and the second driving bevel gear meshes with the second driven bevel gear.

4. The camshaft torque detection device according to claim 2, characterized in that, The testing platform is also equipped with a second support, an X-axis moving mechanism, and a Z-axis moving mechanism. The second support is connected to the frame via the X-axis moving mechanism, which can drive the second support to move along the X-axis direction. The first support is connected to the second support via the Z-axis moving mechanism, which can drive the first support to move along the Z-axis direction.

5. The camshaft torque detection device according to claim 2, characterized in that, The first detection head is provided with a first positioning hole, and the intake camshaft is provided with a first positioning pin; the second detection head is provided with a second positioning hole, and the exhaust camshaft is provided with a second positioning pin; when the X-axis moving mechanism drives the second bracket to move into position along the X-axis direction, and the Z-axis moving mechanism drives the first bracket to move into position along the Z-axis direction, the first positioning pin can be inserted into the first positioning hole, and the second positioning pin can be inserted into the second positioning hole.

6. The camshaft torque detection device according to claim 5, characterized in that, The detection platform is equipped with a first warning light at both the first detection position sensor and the second detection position sensor. The first warning light is electrically connected to the controller. When the first positioning pin is detected not being inserted into the first positioning hole, the first warning light will light up to trigger an alarm. The detection platform is equipped with a second warning light at both the third and fourth detection position sensors. The second warning light is electrically connected to the controller. When the second positioning pin is detected not being inserted into the second positioning hole, the second warning light will illuminate to trigger an alarm.

7. The camshaft torque detection device according to claim 4, characterized in that, The X-axis moving mechanism includes a first cylinder and two first linear guide rail modules. The first cylinder is fixed on the frame, and the push rod of the first cylinder is fixedly connected to the second bracket. The two first linear guide rail modules are disposed on the frame and respectively arranged on both sides of the first cylinder. Each first linear guide rail module includes a first slider and a first guide rail. The first guide rail is fixedly connected to the frame and extends along the X-axis direction. The lower end of the first slider slides on the first guide rail, and the upper end of the first slider is fixedly connected to the second bracket.

8. The camshaft torque detection device according to claim 4, characterized in that, The Z-axis moving mechanism includes a second cylinder and two second linear guide rail modules. The second cylinder is fixed on the second bracket, and the push rod of the second cylinder is fixedly connected to the first bracket through a first connector. The two second linear guide rail modules are disposed on the second bracket and respectively arranged on both sides of the second cylinder. Each second linear guide rail module includes a second slider and a second guide rail. The second guide rail is fixed on the first bracket and extends along the Z-axis direction. The second slider is fixed on the second bracket and is slidably connected to the second guide rail.

9. The camshaft torque detection device according to claim 1, characterized in that, The frame is also equipped with a workpiece limiting mechanism, which includes a third bracket, a third cylinder, a connecting plate, and a clamping column. The third bracket is fixed to the frame, and the third cylinder is connected to the top of the third bracket via a Y-axis moving mechanism. The Y-axis moving mechanism can drive the third cylinder to move along the Y-axis. The push rod of the third cylinder is fixedly connected to the connecting plate, and the third cylinder can drive the connecting plate to move up and down along the Z-axis. The clamping column is fixed to the bottom of the connecting plate and can abut against the workpiece. The connecting plate is provided with a third positioning hole, and the workpiece is provided with a third positioning pin. When the third cylinder drives the connecting plate to move downward, the third positioning pin can be inserted into the third positioning hole.

10. The camshaft torque detection device according to claim 9, characterized in that, The Y-axis moving mechanism includes a fourth cylinder, a slide table, and two third linear guide rail modules, which are symmetrically arranged on the top of the third support. Each third linear guide rail module includes a third slider and a third guide rail. The third guide rail is fixed to the top of the third support and extends along the Y-axis. The lower end of the third slider is slidably connected to the third guide rail, the upper end of the third slider is fixedly connected to the bottom of the slide table, and the top of the slide table is fixedly connected to the third cylinder.

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