Dynamic torque measuring device and system for transmission shaft
By designing a dynamic torque measurement device for the drive shaft of new energy vehicles and adopting a non-contact measurement method, the adaptability problem of traditional torque measurement equipment in high-speed environments is solved, and high-precision torque measurement is achieved.
Patent Information
- Application Number
- CN202422384838.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-09-29
AI Technical Summary
Traditional torque measurement equipment is difficult to install and use in the high-speed environment of new energy vehicles, and traditional torque measurement solutions are difficult to adapt to high-speed environments, resulting in measurement difficulties.
A dynamic torque measurement device for a transmission shaft is designed. It uses components such as strain gauges, signal transmission modules, rotor antennas, and stator antennas. Through non-contact measurement, the signal transmission module is installed in the ring groove structure, the rotor antenna rotates with the transmission shaft, and the stator antenna is fixed to the housing to achieve torque measurement at high speeds.
It realizes accurate torque measurement of the drive shaft under high-speed environment. It has the characteristics of small size, strong anti-eccentric load ability, easy installation and high detection accuracy. It is suitable for the power transmission system of new energy vehicles.
Smart Images
Figure CN223319939U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of torque measurement, in particular to a transmission shaft dynamic torque measurement device and system. Background Art
[0002] The core system of an automotive powertrain is the shaft transmission, which plays a crucial role in transmitting power from the power source to the wheels to propel the vehicle. In-depth research into the efficiency of the automotive drive shaft system in transmitting torque, optimizing powertrain solutions, and improving vehicle energy efficiency are currently crucial. With the growing popularity of new energy vehicles, the performance requirements for powertrain systems are becoming increasingly stringent.
[0003] With the continuous advancement of automotive technology, powertrain structures are becoming increasingly compact, and their dimensions are shrinking. While this trend offers numerous advantages, such as reduced vehicle weight and improved transmission efficiency, it also creates challenges in measuring torque transmission at various points. Due to space constraints, traditional torque measurement equipment is often difficult to install and use.
[0004] At the same time, with the increasing market penetration of new energy vehicles, electric motors are gradually replacing traditional internal combustion engines as the primary power source. This shift has led to significantly higher transmission speeds, creating new challenges for torque measurement. Conventional torque measurement solutions often struggle to adapt to these high-speed environments, necessitating the development of new measurement devices to meet the demands of new energy vehicle powertrains. Summary of the Invention
[0005] In a first aspect, the technical solution of the utility model provides a transmission shaft dynamic torque measurement device, wherein the transmission shaft is installed in a housing through a bearing, and the device includes a strain gauge, a signal transmission tooling, a signal transmission module, a rotor antenna, a stator antenna, and a signal processing module;
[0006] The strain gauge is pasted on the surface of the transmission shaft and connected to the signal transmitting module; the signal transmitting tooling is nested on the transmission shaft, the signal transmitting tooling is provided with a slot structure, the signal transmitting module is installed and fixed in the slot structure, the signal transmitting module is connected to the rotor antenna through a wire to form a loop, and the stator antenna is connected to the signal processing module.
[0007] As a preferred embodiment of the technical solution of the present utility model, the groove structure provided on the signal transmitting tooling is a ring groove structure; the signal transmitting module is a flexible structure installed in the ring groove structure of the signal transmitting tooling.
[0008] As a preferred embodiment of the technical solution of the present invention, the rotor antenna and the stator antenna are both annular copper coils.
[0009] As a preferred embodiment of the technical solution of the present utility model, the rotor antenna is fixed on the signal transmitting tooling and rotates along with the transmission shaft.
[0010] As a preferred embodiment of the technical solution of the present invention, the stator antenna is fixed on the housing, and supplies power to the signal transmitting module and transmits the collected electrical signals by induction.
[0011] As a preferred embodiment of the technical solution of the present invention, the signal transmitting module supplies power to the strain gauge circuit.
[0012] As a preferred embodiment of the technical solution of the present invention, the stator antenna is connected to the signal processing module via a wire.
[0013] As a preferred embodiment of the technical solution of the present invention, the strain gauge is connected to the signal transmission module via a wire.
[0014] As a preferred embodiment of the technical solution of the present invention, the signal transmission module includes a module with model number SV Flex PCM16 RMC.
[0015] In a second aspect, the technical solution of the present utility model further provides a transmission shaft dynamic torque measurement system, comprising a host computer and the transmission shaft dynamic torque measurement device described in the first aspect;
[0016] The transmission shaft dynamic torque measuring device is connected to a host computer.
[0017] It can be seen from the above technical solution that the utility model has the following advantages: by designing a signal transmitting tooling for installing the signal transmitting module, the rotor antenna is fixed on the signal transmitting tooling and rotates with the transmission shaft. This structural design satisfies the working state of the dynamic test of the transmission shaft in a high-speed environment, is not affected by fluctuations in other parameters, realizes non-contact measurement, and has the characteristics of small size, strong resistance to eccentric loads, easy installation, and high detection accuracy.
[0018] In addition, the utility model has a reliable design principle, a simple structure and a very broad application prospect. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0020] Figure 1 It is a principle diagram of the transmission shaft dynamic torque measuring device of the utility model.
[0021] Figure 2 This is a structural diagram of a transmission shaft dynamic torque measuring device of the present utility model.
[0022] Figure 3 It is a schematic diagram of the structure of the signal transmitting tooling in the embodiment of the present utility model.
[0023] In the figure, 1- transmission shaft, 2- strain gauge, 3- signal transmitting module, 4- signal transmitting tooling, 41- ring groove, 5- rotor antenna, 6- stator antenna, 7- signal processing module, 8- wire, 9- housing. DETAILED DESCRIPTION
[0024] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.
[0025] like Figure 1 、 Figure 2 As shown, an embodiment of the present invention provides a dynamic torque measuring device for a transmission shaft. The transmission shaft is installed in a housing through a bearing. The device includes a strain gauge 2, a signal transmitting tool 4, a signal transmitting module 3, a rotor antenna 5, a stator antenna 6 and a signal processing module 7.
[0026] The strain gauge 2 is pasted on the surface of the transmission shaft 1 and connected to the signal transmitting module 3; the signal transmitting tooling 4 is nested on the transmission shaft 1, and the signal transmitting tooling 4 is provided with a slot structure, and the signal transmitting module 3 is installed and fixed in the slot structure. The signal transmitting module 3 is connected to the rotor antenna 5 through a wire to form a loop, and the stator antenna 6 is connected to the signal processing module 7.
[0027] The strain gauge is attached to the surface of the transmission shaft. When the force on the transmission shaft causes deformation, the strain gauge also deforms, causing the bridge resistance value to change. The change in resistance causes the electrical signal to change, which is transmitted to the signal transmission module. The signal transmission module powers the strain gauge circuit, collects, amplifies and transmits the electrical signal.
[0028] The rotor antenna and the stator antenna are both annular copper coils.
[0029] The rotor antenna is fixed on the signal transmission fixture and rotates with the transmission shaft. The stator antenna is fixed on the housing 9 and supplies power to the signal transmission module and transmits the collected electrical signals through induction.
[0030] The signal transmission module supplies power to the strain gauge circuit. The stator antenna is connected to the signal processing module via a wire. The strain gauge is also connected to the signal transmission module via a wire.
[0031] like Figure 3 As shown, the groove structure provided on the signal transmitting tooling 4 is an annular groove structure; the signal transmitting module is a flexible structure installed in the annular groove 41 of the signal transmitting tooling.
[0032] The signal transmission module includes a module of model SV Flex PCM16 RMC.
[0033] The embodiment of the present utility model further provides a transmission shaft dynamic torque measurement system, comprising a host computer and the transmission shaft dynamic torque measurement device described in the above embodiment;
[0034] The transmission shaft dynamic torque measuring device is connected to a host computer.
[0035] The signal processing module receives the signal transmitted by the stator antenna, analyzes it, and converts it into the physical quantity of the drive shaft torque. This is then transmitted to the host computer through an interface for storage, enabling real-time measurement and acquisition of the drive shaft's dynamic torque. The specific analysis and processing methods of the signal processing module are implemented using existing methods and are not detailed in this utility model.
[0036] Although the present invention has been described in detail with reference to the accompanying drawings and in conjunction with preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, persons of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and such modifications or substitutions shall fall within the scope of the present invention. Any changes or substitutions that can be easily conceived by persons skilled in the art within the technical scope disclosed in the present invention shall fall within the scope of protection of the present invention.
Claims
1. A transmission shaft dynamic torque measuring device, wherein the transmission shaft is mounted in a housing through a bearing, characterized in that: The device includes a strain gauge, a signal transmitting tool, a signal transmitting module, a rotor antenna, a stator antenna and a signal processing module; The strain gauge is pasted on the surface of the transmission shaft and connected to the signal transmitting module; the signal transmitting tooling is nested on the transmission shaft, the signal transmitting tooling is provided with a slot structure, the signal transmitting module is installed and fixed in the slot structure, the signal transmitting module is connected to the rotor antenna through a wire to form a loop, and the stator antenna is connected to the signal processing module.
2. The transmission shaft dynamic torque measuring device according to claim 1, characterized in that: The groove structure of the signal transmitting tooling is a ring groove structure; the signal transmitting module is a flexible structure installed in the ring groove structure of the signal transmitting tooling.
3. The transmission shaft dynamic torque measuring device according to claim 2, characterized in that: The rotor antenna and the stator antenna are both annular copper coils.
4. The transmission shaft dynamic torque measuring device according to claim 3, characterized in that: The rotor antenna is fixed on the signal transmitting tooling and rotates along with the transmission shaft.
5. The transmission shaft dynamic torque measuring device according to claim 4, characterized in that: The stator antenna is fixed on the housing and supplies power to the signal transmitting module and transmits the collected electrical signals by induction.
6. The transmission shaft dynamic torque measuring device according to any one of claims 1 to 5, characterized in that: The signal transmitter module provides power to the strain gauge circuit.
7. The transmission shaft dynamic torque measuring device according to claim 6, characterized in that: The stator antenna is connected to the signal processing module through a wire.
8. The transmission shaft dynamic torque measuring device according to claim 7, characterized in that: The strain gauge is connected to the signal transmitting module through a wire.
9. The transmission shaft dynamic torque measuring device according to claim 1, wherein: The signal transmission module includes a module of model SV Flex PCM16 RMC.
10. A transmission shaft dynamic torque measurement system, characterized in that: It comprises a host computer and a transmission shaft dynamic torque measuring device according to any one of claims 1 to 9; The transmission shaft dynamic torque measuring device is connected to a host computer.