Intermediate checking device and system

Abstract

The utility model discloses an intermediate checking device and system. The intermediate checking device comprises a torque output device, a first torque detection member and a control module. The torque output end of the torque output device is connected with the power measuring system and is used for outputting different torques to the power measuring system; the first torque detection piece is arranged at the torque output end of the torque output device and used for detecting torque output by the torque output device. The input end of the control module is electrically connected with the first torque detection piece, the output end of the control module is electrically connected with the torque output device, and the communication end of the control module is in communication connection with the power measuring system. By adopting the scheme, the problems of high labor intensity, high potential safety hazard and low checking precision of the existing intermediate checking mode are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of dynamometer system verification, in particular to a period verification device and system. Background Art

[0002] The dynamometer system is a test device used to measure the output power and efficiency of a motor or engine. The dynamometer system connects the motor or engine to a dynamometer to make it rotate and output power, and then uses a measuring instrument to measure, analyze and record its output power, thereby obtaining its output power, efficiency and other parameters.

[0003] like Figure 1 As shown, the dynamometer system 1 includes a dynamometer 11, a torque sensor 12, a universal shaft 13 and a dynamometer computer 14. The dynamometer 11 is a device for measuring the output torque, speed and power of a power mechanical shaft. The dynamometer 11 is connected to the universal shaft 13. The torque sensor 12 is arranged between the universal shaft 13 and the dynamometer 11 for detecting torque. The input end of the dynamometer computer 14 is connected to the torque sensor 12, and the output end of the dynamometer computer 14 is connected to the dynamometer 11. After the dynamometer system 1 is used for a period of time, it needs to be checked during the period. The existing period checking methods are as follows: Figure 2 As shown, a period verification bracket 50 of standard length will be installed at the output end of the dynamometer system 1. By adding weights of standard weight at both ends of the period verification bracket 50, the actual torque is obtained according to torque = mass × gravitational acceleration × lever arm length, and it is compared with the torque value detected by the torque sensor 12 to realize the period verification inspection of the torque sensor 12.

[0004] The existing dynamometer system 1 needs to manually lift weights, disassemble the universal shaft, and record data results during the period verification, which is labor-intensive and has high safety risks. At the same time, each weight has a fixed period verification torque, the period verification inspection interval is large, and the period verification inspection accuracy is low. Utility Model Content

[0005] The utility model provides a period verification device and system to solve the problems of high labor intensity, high safety risks and low verification accuracy in the existing period verification method.

[0006] According to one aspect of the utility model, a period verification device is provided, the period verification device comprising a torque output device, a first torque detection member and a control module;

[0007] The torque output end of the torque output device is connected to the dynamometer system and is used to output torques of different magnitudes to the dynamometer system;

[0008] The first torque detection member is disposed at the torque output end of the torque output device, and is used to detect the torque output by the torque output device;

[0009] The input end of the control module is electrically connected to the first torque detection component, the output end of the control module is electrically connected to the torque output device, and the communication end of the control module is communicatively connected to the dynamometer system.

[0010] In an optional embodiment of the present utility model, the torque output device includes a motor, and the output end of the control module is electrically connected to the motor.

[0011] In an optional embodiment of the present utility model, the torque output device also includes a speed changing mechanism, the output end of the motor is electrically connected to the input end of the speed changing mechanism, the output end of the speed changing mechanism is connected to the dynamometer system, and the speed changing mechanism is used to change the output torque.

[0012] In an optional embodiment of the present invention, the speed change mechanism includes a gearbox.

[0013] In an optional embodiment of the present invention, the gearbox includes a gear transmission device.

[0014] In an optional embodiment of the present invention, the first torque detection component includes a torque sensor.

[0015] In an optional embodiment of the present invention, the torque sensor includes a flange-type torque sensor.

[0016] According to another aspect of the present invention, a period verification system is provided. The period verification system includes a dynamometer system and the period verification device described in any embodiment of the present invention.

[0017] In an optional embodiment of the utility model, the dynamometer system includes a dynamometer, a second torque detection member, a universal shaft and a dynamometer computer;

[0018] The input end of the dynamometer is connected to the cardan shaft, and the second torque detection member is arranged between the input end of the dynamometer and the cardan shaft;

[0019] The input end of the dynamometer computer is electrically connected to the second torque detection member, and the output end of the dynamometer computer is electrically connected to the dynamometer;

[0020] The torque output end of the torque output device is connected to an end of the universal shaft away from the dynamometer.

[0021] In an optional embodiment of the present invention, the communication terminal of the control module is communicatively connected to the dynamometer computer.

[0022] The technical solution of the embodiment of the utility model is that the torque output device can output torque values ​​of different sizes by setting a torque output device, a first torque detection member and a control module, and the electric drive loading replaces the existing weight loading, with fast response speed, precise control and no safety hazards. The input end of the control module is electrically connected to the first torque detection member, so that the actual output torque of the torque output device measured by the first torque detection member can be obtained. At the same time, the communication end of the control module is connected to the dynamometer system, so the control module can obtain the output torque of the torque output device detected by the dynamometer system, so the control module can automatically record the torque data verified during the period, thereby improving work efficiency. Therefore, the problems of high labor intensity, high safety hazards and low verification accuracy of the existing period verification method are solved.

[0023] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a structural schematic diagram of a dynamometer system in the related art;

[0026] Figure 2 yes Figure 1 Schematic diagram of the structure of the dynamometer system during the inspection;

[0027] Figure 3 The utility model is a connection diagram of a period checking device and a dynamometer system. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] Embodiment 1

[0031] The first embodiment of the present utility model provides a period verification device, such as Figure 3 As shown, the period verification device includes a torque output device 2, a first torque detection component 4 and a control module 3.

[0032] The torque output end of the torque output device 2 is connected to the dynamometer system 1, and is used to output torques of different magnitudes to the dynamometer system 1. The torque output device 2 refers to a device capable of outputting torques of different magnitudes, and it can output torques of different magnitudes according to the requirements of the dynamometer system 1 during verification.

[0033] The first torque detection member 4 is arranged at the torque output end of the torque output device 2, and is used to detect the torque output by the torque output device 2. The first torque detection member 4 refers to a component that can detect the torque value output by the torque output device 2. In some embodiments, the first torque detection member 4 includes a torque sensor, which is a sensor device for measuring the torque change of the shaft system, so that the torque value output by the torque output device 2 can be detected. The torque sensor is a calibrated standard sensor, and the output torque of the device is measured by the torque sensor during the period verification. In some embodiments, the torque sensor includes a flange torque sensor. Among them, the advantages of the flange torque sensor include high precision, long life, compact structure, easy installation, strong adaptability, high data transmission efficiency, strong anti-interference ability, and suitable for dynamic and static torque measurement.

[0034] The input end of the control module 3 is electrically connected to the first torque detection member 4, and the output end of the control module 3 is electrically connected to the torque output device 2. The control module 3 refers to a module capable of controlling the output torque of the torque output device 2. In some embodiments, the control module 3 controls the input signal of the torque output device 2 through closed-loop control to achieve control of the output torque of the torque output device 2. When the torque value detected by the first torque detection member 4 is too large or too small, the control module 3 can adjust the electrical signal input to the torque output device 2 so that the output torque of the torque output device 2 changes.

[0035] The communication end of the control module 3 is communicatively connected to the dynamometer system 1, so that the control module 3 can obtain the output torque of the torque output device 2 detected by the dynamometer system 1, and compare it with the actual output torque of the torque output device 2 detected by the first torque detection component 4, thereby realizing period verification of the dynamometer system 1.

[0036] The above scheme, by setting the torque output device 2, the first torque detection member 4 and the control module 3, the torque output device 2 can output torque values ​​of different sizes, and replace the existing weight loading with electric drive loading, with fast response speed, precise control and no safety hazards. The input end of the control module 3 is electrically connected to the first torque detection member 4, so that the actual output torque of the torque output device 2 measured by the first torque detection member 4 can be obtained. At the same time, the communication end of the control module 3 is connected to the dynamometer system 1, so the control module 3 can obtain the output torque of the torque output device 2 detected by the dynamometer system 1, so the control module 3 can automatically record the torque data of the period verification, thereby improving work efficiency. Therefore, the problems of high labor intensity, high safety hazards and low verification accuracy of the existing period verification method are solved.

[0037] In an optional embodiment of the present utility model, as Figure 3 As shown, the torque output device 2 includes a motor 21, and the output end of the control module 3 is electrically connected to the motor 21, so the motor 21 is mainly a torque output unit of the period verification device, and can output different period verification torques according to the requirements of the period verification device. Among them, the control module 3 can adjust the output torque of the motor 21 through a variety of methods, and the specific methods include selecting a motor 21 with a larger torque constant, changing the input current of the motor 21, changing the input voltage of the motor 21, etc., and the specific method of the control module 3 changing the output torque of the motor 21 is not specifically limited here. When changing the output torque of the motor 21, it is necessary to take into account the actual application of the motor 21 to ensure that the motor 21 will not be overloaded or burned out.

[0038] Because the control module 3 can adjust the output torque of the motor 21, the period verification resolution can be set according to the period verification requirements, so that the control module 3 gradually adjusts the output torque of the motor 21 according to the period verification resolution to improve the period verification accuracy. In addition, the control module 3 uses electric drive to change the output torque of the motor 21 instead of the existing weight to change the torque, which has a fast response speed and precise control.

[0039] In some embodiments, the control module 3 includes a controller. In some embodiments, the controller can perform closed-loop control on the motor 21 through a PID algorithm to make the torque value output by the motor 21 more accurate. Preferably, the controller includes any controller capable of adjusting the torque of the motor 21, such as a brushless motor controller, a motor controller, a servo motor controller, etc. It is understandable that in other embodiments, other devices capable of adjusting the torque of the motor 21 can also be selected as the control module 3, for example, a microprocessor can be selected as the control module 3 to adjust the torque of the motor 21, and the specific structure of the control module 3 is not specifically limited here.

[0040] In an optional embodiment of the present utility model, as Figure 3 As shown, the torque output device 2 also includes a speed change mechanism 22, the output end of the motor 21 is electrically connected to the input end of the speed change mechanism 22, the output end of the speed change mechanism 22 is connected to the dynamometer system 1, and the speed change mechanism 22 is used to change the output torque. The speed change mechanism 22 refers to a mechanism that can change the transmission ratio of the output shaft and the input shaft in a fixed or step-by-step manner, and the speed change mechanism 22 changes the transmission ratio to achieve a change in the torque finally output to the dynamometer system 1.

[0041] In some embodiments, the speed change mechanism 22 includes a gearbox. In some embodiments, the gearbox includes a gear transmission device, which converts the transmission coefficient through a gear combination to convert the output torque of the high-speed and low-torque motor 21 into the required high-torque output torque.

[0042] Embodiment 2

[0043] The second embodiment of the present utility model provides a period verification system, such as Figure 3 As shown, the period verification system includes a dynamometer system 1 and a period verification device according to any embodiment of the present utility model.

[0044] In an optional embodiment of the utility model, the dynamometer system 1 includes a dynamometer 11, a second torque detection member 12, a universal shaft 13 and a dynamometer computer 14. The dynamometer 11 is a device for measuring the output torque, speed and power of a power machine shaft. The second torque detection member 12 is a component of the dynamometer system 1 for detecting torque. The dynamometer computer 14 refers to a component that can record, analyze and process various parameters detected by the dynamometer 11 and the second torque detection member 12.

[0045] In some embodiments, the second torque detection member 12 includes a torque sensor. Depending on the dynamometer system 1, the torque sensor model generally used is different. For example, the electric dynamometer 11 is equipped with a flange torque sensor, which measures the torsional deformation of the shaft system through an electric bridge to achieve shaft system torque measurement; the hydraulic dynamometer 11 is equipped with a tension and pressure sensor, which measures the tension and pressure deformation of the outer shell of the hydraulic dynamometer 11 to achieve shaft system torque measurement. In this embodiment, the dynamometer 11 is an electric dynamometer, and the torque sensor is a flange torque sensor accordingly.

[0046] The input end of the dynamometer 11 is connected to the universal shaft 13, and the second torque detection component 12 is arranged between the input end of the dynamometer 11 and the universal shaft 13. The second torque detection component 12 is a component of the dynamometer system 1 for detecting torque, and can detect the torque input by the component to be tested through the universal shaft 13. During the verification, it is mainly necessary to verify whether the measurement value of the second torque detection component 12 is accurate.

[0047] The input end of the dynamometer computer 14 is electrically connected to the second torque detection component 12 , and the output end of the dynamometer computer 14 is electrically connected to the dynamometer 11 ; therefore, the dynamometer computer 14 can obtain the torque detected by the second torque detection component 12 and input through the universal joint 13 .

[0048] The torque output end of the torque output device 2 is connected to the end of the universal shaft 13 away from the dynamometer 11 , so the torque output device 2 can output torque to the universal shaft 13 , and the second torque detector 12 can detect the torque output by the torque output device 2 .

[0049] In an optional embodiment of the utility model, the communication end of the control module 3 is communicatively connected to the dynamometer computer 14, so that the control module 3 can automatically record the torque value detected by the second torque detection component 12, which is the detection value of the dynamometer system 1. At the same time, the control module 3 can also automatically obtain the actual output torque of the torque output device 2 detected by the first torque detection component 4, so the control module 3 can automatically record the data during verification, thereby improving work efficiency.

[0050] In some embodiments, the communication terminal of the control module 3 and the dynamometer computer 14 communicate via a wired manner, and the control module 3 and the dynamometer computer 14 both include a communication interface, and the communication interface includes at least one of a UART interface, an IIC interface, and an SPI interface communication. The control module 3 and the dynamometer computer 14 are connected to each other through the corresponding communication interface. For example, when the control module 3 and the dynamometer computer 14 communicate via a UART interface, the UART interface of the control module 3 will be electrically connected to the UART interface of the dynamometer computer 14. In some embodiments, the communication terminal of the control module 3 and the dynamometer computer 14 communicate via wireless communication, and at this time, the control module 3 and the dynamometer computer 14 both include a wireless communication module to achieve communication connection. The wireless communication module includes one or more of a Bluetooth module, a Wi-Fi module, and a ZigBee module. It is understandable that the control module 3 and the dynamometer computer 14 can select different structures to achieve communication according to demand, and the manner in which the control module 3 and the dynamometer computer 14 achieve communication connection is not specifically limited here.

[0051] The following describes the period verification principle of the period verification system. The output end of the gearbox of the period verification device is connected to the universal joint 13 of the dynamometer system 1 to simulate the original state of the engine test. The torque output of the period verification device is controlled by the control module 3 to perform an axial torque comparison check.

[0052] At the beginning of the period verification, the torque required for the period verification of the dynamometer 11 is input into the control module 3. The control module 3 gradually increases the output torque of the motor 21 according to the preset resolution accuracy and the required torque. Through the data transmission between the control module 3 and the dynamometer computer 14, the actual output torque of the period verification device and the torque detected by the dynamometer system 1 can be compared, thereby automatically completing the period verification inspection work of the dynamometer system 1.

[0053] For data deviations that occur during the linear (y=kX+b) verification inspection of the second torque detection component 12 of the dynamometer system 1, complete inspection data can be generated. According to the requirements of the dynamometer system 1, the torque value detected by the second torque detection component 12 is recorded, and then the data correction function is implemented in the background to improve the accuracy of the torque data measurement of the dynamometer system 1.

[0054] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0055] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A period verification device, characterized in that: It includes a torque output device, a first torque detection member and a control module; The torque output end of the torque output device is connected to the dynamometer system and is used to output torques of different magnitudes to the dynamometer system; The first torque detection member is disposed at the torque output end of the torque output device, and is used to detect the torque output by the torque output device; The input end of the control module is electrically connected to the first torque detection component, the output end of the control module is electrically connected to the torque output device, and the communication end of the control module is communicatively connected to the dynamometer system.

2. The period checking device according to claim 1, characterized in that: The torque output device includes a motor, and the output end of the control module is electrically connected to the motor.

3. The period checking device according to claim 2, characterized in that: The torque output device further includes a speed change mechanism, the output end of the motor is electrically connected to the input end of the speed change mechanism, the output end of the speed change mechanism is connected to the dynamometer system, and the speed change mechanism is used to change the output torque.

4. The period checking device according to claim 3, characterized in that: The speed change mechanism includes a gearbox.

5. The period checking device according to claim 4, characterized in that: The gearbox includes a gear transmission.

6. The period checking device according to any one of claims 1 to 5, characterized in that: The first torque detecting member includes a torque sensor.

7. The period checking device according to claim 6, characterized in that: The torque sensor comprises a flange type torque sensor.

8. A period verification system, characterized in that: The invention comprises a dynamometer system and a period checking device as claimed in any one of claims 1 to 7.

9. The period verification system according to claim 8, characterized in that: The dynamometer system comprises a dynamometer, a second torque detection member, a universal shaft and a dynamometer computer; The input end of the dynamometer is connected to the cardan shaft, and the second torque detection member is arranged between the input end of the dynamometer and the cardan shaft; The input end of the dynamometer computer is electrically connected to the second torque detection member, and the output end of the dynamometer computer is electrically connected to the dynamometer; The torque output end of the torque output device is connected to an end of the universal shaft away from the dynamometer.

10. The period verification system according to claim 9, characterized in that: The communication terminal of the control module is communicatively connected with the dynamometer computer.

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