Intelligent traction pin for universal traction force detection

Abstract

The utility model relates to an intelligent traction pin for universal traction force detection, the axis of the traction pin is provided with a through hole, the two ends of the through hole are sealed ends, the traction pin comprises a traction pin detachably installed on a saddle, the traction pin comprises a connecting disc, a transition cylinder and a pin body, and the connecting disc, the transition cylinder and the pin body are of an integrated structure. An annular groove is formed in the transition cylinder, an elastic body is arranged in the annular groove, the elastic body and the transition cylinder are of an integrated structure, a plurality of strain gauges are arranged on the inner wall, close to the elastic body, of the through hole in the circumferential direction, and the strain gauges are used for detecting traction force data and connected with a processing system. According to the intelligent traction pin for universal traction force detection, traction force data between a main vehicle and a trailer can be detected in real time, the system structure is simplified, the detection precision is improved, and data support is provided for intelligent management of vehicles, so that the driving safety and the operation efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of tractor technology, and in particular to an intelligent traction pin for detecting universal traction force. Background Technology

[0002] In existing semi-trailer traction systems, the drawbar, a key component connecting the tractor and trailer, typically employs a solid cylindrical structure, achieving omnidirectional traction through a fixed fit with the tractor's saddle. However, this traditional drawbar serves only as a mechanical connection and cannot detect traction force data between the tractor and trailer in real time. Trailer handling systems rely on additional auxiliary equipment for traction force detection, leading to system complexity and increased costs. The dependence on auxiliary equipment for traction force detection introduces errors during signal transmission and processing, resulting in low detection accuracy and failing to meet the demands for high-precision traction force detection. The installation of auxiliary equipment also requires additional space, increasing system complexity and hindering maintenance and repair. In the context of rapid development in intelligent logistics and autonomous driving technologies, traditional drawbars cannot provide real-time data support, failing to meet the intelligent and data-driven needs of modern vehicles. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an intelligent traction pin for universal traction force detection, which can not only detect the traction force data between the tractor and trailer in real time, but also simplify the system structure, improve the detection accuracy, provide data support for intelligent vehicle management, and thus improve driving safety and operational efficiency.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an intelligent traction pin for universal traction force detection, wherein the traction pin has a through hole at its shaft center and both ends of the through hole are sealed ends, including a traction pin that can be detachably installed on a saddle, the traction pin including a connecting plate, a transition cylinder and a pin body, the connecting plate, the transition cylinder and the pin body are integral structures, the transition cylinder is provided with an annular groove, an elastic body is provided in the annular groove, the elastic body and the transition cylinder are integral structures, and multiple strain gauges are arranged circumferentially near the inner wall of the through hole near the elastic body, the strain gauges are used to detect traction force data and are connected to the processing system.

[0005] In one embodiment, the through hole of the intelligent traction pin for universal traction force detection is provided with multiple temperature compensation plates along the circumferential direction near the inner wall of the strain gauge. The temperature compensation plates are used to compensate the temperature of the strain gauge to improve the accuracy of traction force detection.

[0006] In one embodiment, the connecting disc of the intelligent traction pin for universal traction force detection is provided with a wire hole, which communicates with a through hole. The strain gauge and the temperature compensation plate are connected by a cable, which passes through the wire hole and is connected to the processing system.

[0007] In one embodiment, the transition cylinder of the smart traction pin for omnidirectional traction force detection is provided with an auxiliary hole for accommodating a cable, and the auxiliary hole is connected to the through hole.

[0008] In one embodiment, the connecting disc of the intelligent traction pin for omnidirectional traction detection is provided with a plurality of connecting holes along the circumferential direction for fixed connection with the trailer.

[0009] In one embodiment, the elastic body of the smart traction pin for omnidirectional traction force detection is a cylindrical structure.

[0010] In one embodiment, the strain gauge of the smart traction pin used for universal traction force detection is a double-bridge strain gauge, which is used to improve the accuracy and anti-interference capability of traction force detection.

[0011] The beneficial effects of this application are as follows:

[0012] This application provides an intelligent traction pin for universal traction force detection. By incorporating multiple strain gauges and temperature compensation gauges within the through-hole of the traction pin in conjunction with an elastomer, real-time and high-precision traction force detection is achieved. It also boasts advantages such as compact structure, convenient installation, and strong anti-interference capability. This intelligent traction pin for universal traction force detection not only improves the accuracy and reliability of traction force detection but also provides crucial support for intelligent vehicle management and driving safety, exhibiting broad application prospects and significant technical advantages. Attached Figure Description

[0013] Figure 1 This is a schematic diagram from one perspective of an intelligent traction pin for omnidirectional traction force detection, as an embodiment of this application.

[0014] Figure 2 This is a schematic diagram from another perspective of an embodiment of the present application of an intelligent traction pin for omnidirectional traction force detection.

[0015] Figure 3 A cross-sectional view of an intelligent traction pin for omnidirectional traction force detection according to an embodiment of this application;

[0016] in:

[0017] 1. Traction pin; 11. Connecting disc; 12. Transition cylinder; 13. Pin body; 14. Through hole; 121. Annular groove; 122. Elastomer; 123. Strain gauge; 124. Temperature compensation gauge; 125. Auxiliary hole; 111. Wire hole; 112. Connecting hole. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] like Figure 1 As shown, an embodiment of this application provides an intelligent traction pin for universal traction force detection, including a traction pin 1 detachably mounted on a saddle. The traction pin 1 has a through hole 14 at its axis, and both ends of the through hole 14 are sealed ends. The traction pin 1 includes a connecting plate 11, a transition cylinder 12, and a pin body 13. The connecting plate 11, the transition cylinder 12, and the pin body 13 are integrally formed. The transition cylinder 12 has an annular groove 121, and an elastic body 122 is disposed in the annular groove 121. The elastic body 122 and the transition cylinder 12 are integrally formed. Multiple strain gauges 123 are disposed circumferentially near the inner wall of the through hole 14 close to the elastic body 122. The strain gauges 123 are used to detect traction force data and are connected to the processing system.

[0020] Specifically, the connecting disc 11 of the towing pin 1 is connected to the trailer. The saddle is first fixedly connected to the main vehicle. The locking mechanism on the saddle locks the pin 13 of the towing pin 1, thus engaging the main vehicle and the trailer. When the locking mechanism on the saddle releases the pin 13 of the towing pin 1, the main vehicle and the trailer disengage. An elastic body 122 is provided in the middle of the transition cylinder 12. Multiple strain gauges 123 are evenly attached to the inner wall of the through hole 14 near the elastic body 122. Multiple temperature compensation plates 124 are arranged circumferentially near the strain gauges 123 in the through hole 14. The strain gauges 123 and the temperature compensation plates 124 are connected together by cables and communicate with the processing system. The processing system includes an operational amplifier circuit board and an electronic control system. The strain gauges 123 are connected to the operational amplifier circuit board, and the operational amplifier circuit board is connected to the electronic control system. The circuit board collects the resistance change of strain gauge 123, converts it into a traction force value, and outputs it to the CAN network of the electronic control system, so that the electronic control system can read it and control the trailer.

[0021] When the tractor unit pulls the trailer, it applies traction force to the traction pin 1 through the saddle. The traction force is transmitted to the transition cylinder 12 and the elastic body 122 through the pin 13. The elastic body 122 undergoes slight deformation under the action of the traction force, and the deformation is proportional to the magnitude of the traction force. The strain gauge 123 senses the deformation of the elastic body 122 and generates a change in resistance, converting the mechanical signal into an electrical signal. The electrical signal of the strain gauge 123 is transmitted to the processing system through a cable. The processing system processes the signal and outputs traction force data. The processing system monitors the vehicle's operating status based on the traction force data and provides real-time feedback or control commands to ensure driving safety.

[0022] In the aforementioned structure, the cooperation between the elastomer 122 and the strain gauge 123 ensures accurate detection of traction force data under traction forces in different directions, achieving real-time detection and high-precision measurement of traction force. It also boasts advantages such as compact structure, convenient installation, and wide applicability. The placement of the elastomer 122 ensures uniform force distribution, avoiding localized stress concentration, while providing a stable deformation signal for the strain gauge 123. This intelligent traction pin for omnidirectional traction force detection not only improves the accuracy and reliability of traction force detection but also provides crucial support for intelligent vehicle management and driving safety, exhibiting broad application prospects and significant technological advantages.

[0023] like Figure 1 and Figure 3 As shown, in one embodiment, multiple temperature compensation plates 124 are circumferentially arranged on the inner wall of the through hole 14 of the intelligent traction pin for omnidirectional traction force detection, near the strain gauge 123. The temperature compensation plates 124 are used to compensate for the temperature of the strain gauge 123, thereby improving the accuracy of traction force detection. Multiple temperature compensation plates 124 are attached to the inner wall of the through hole 14 below or above the strain gauge 123, and the strain gauge 123 and temperature compensation plates 124 are connected together by a cable and communicated with the processing system. The temperature compensation plates 124 are used to eliminate the influence of temperature changes on the detection results of the strain gauge 123. The temperature compensation plates 124, used in conjunction with the strain gauge 123, can significantly improve the accuracy and reliability of traction force detection.

[0024] like Figure 1 and Figure 2 As shown, in one embodiment, the connecting disc 11 of the intelligent traction pin for universal traction force detection is provided with a wire hole 111, which communicates with the through hole 14. The strain gauge 123 and the temperature compensation plate 124 are connected by cables, which pass through the wire hole 111 and connect to the processing system. The cables of the strain gauge 123 and the temperature compensation plate 124 can be centrally led out from the wire hole 111 and connected to the processing system. The wire hole 111 simplifies wiring, improves reliability, protects the cables, extends their service life, and improves installation convenience.

[0025] In one embodiment, the transition cylinder 12 of the intelligent traction pin for omnidirectional traction force detection is provided with an auxiliary hole 125 for accommodating cables, and the auxiliary hole 125 communicates with the through hole 14. The auxiliary hole 125 facilitates the accommodation of the cables of the strain gauge 123 and the temperature compensation plate 124, thereby improving the ease of installation of the strain gauge 123 and the temperature compensation plate 124.

[0026] like Figure 1 and Figure 2As shown, in one embodiment, the connecting disc 11 of the intelligent tow pin for omnidirectional traction detection is provided with a plurality of connecting holes 112 along its circumference for fixed connection with the trailer. Eight connecting holes 112 are provided along the circumference of the connecting disc 11, and the tow pin 1 is fixed to the trailer by passing a self-locking bolt assembly through the connecting holes 112. This arrangement improves the ease of connecting the tow pin 1 to the trailer.

[0027] like Figure 1 and Figure 3 As shown, in one embodiment, the elastic body 122 of the smart traction pin for omnidirectional traction force detection is a cylindrical structure. This configuration matches the annular groove 121, thereby ensuring uniform force distribution and accurate detection.

[0028] like Figure 1 As shown, in one embodiment, the strain gauge 123 of the intelligent traction pin for omnidirectional traction force detection is a double-bridge strain gauge 123. The double-bridge strain gauge 123 is used to improve the accuracy and anti-interference capability of traction force detection. The application of this double-bridge strain gauge 123 can improve the accuracy and anti-interference capability of traction force detection.

[0029] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A smart draft pin for universal draft force detection, characterized by, The traction pin (1) detachably mounted on the saddle, the axis of the traction pin (1) is provided with a through hole (14), both ends of the through hole (14) are sealed ends, the traction pin (1) comprises a connecting disc (11), a transition cylinder (12) and a pin body (13), the connecting disc (11), the transition cylinder (12) and the pin body (13) are integrated structure, the transition cylinder (12) is provided with an annular groove (121), the annular groove (121) is provided with an elastic body (122), the elastic body (122) and the transition cylinder (12) are integrated structure, the inner wall of the through hole (14) close to the elastic body (122) is provided with a plurality of strain gauges (123) along the circumference, the strain gauges (123) are used for detecting traction data and connected with a processing system.

2. The intelligent drag pin for universal drag force detection of claim 1, wherein, The inner wall of the through hole (14) close to the strain gauge (123) is provided with a plurality of temperature compensation pieces (124) along the circumference, the temperature compensation pieces (124) are used for temperature compensation of the strain gauge (123), so as to improve the precision of the traction force detection.

3. The intelligent drag pin for cardanically drag force detection according to claim 2, characterized in that, The connecting disc (11) is provided with a wire hole (111) which is communicated with the through hole (14), the strain gauges (123) and the temperature compensation pieces (124) are connected through a cable, the cable is drawn out from the wire hole (111) and connected with the processing system.

4. The intelligent drag pin for universal drag force detection of claim 1, wherein, The transition cylinder (12) is provided with an auxiliary hole (125) for accommodating the cable, the auxiliary hole (125) is communicated with the through hole (14).

5. The intelligent drag pin for universal drag force detection of claim 1, wherein, The connecting disc (11) is provided with a plurality of connecting holes (112) for fixedly connecting with the trailer along the circumference.

6. The intelligent drag pin for gimbal drag force detection of claim 1, wherein, The elastic body (122) is a cylindrical structure.

7. The intelligent truing of universal traction force detection kingpin as claimed in claim 1 wherein, The strain gauge (123) is a double-bridge strain gauge (123), which is used for improving the precision and anti-interference ability of the traction force detection.

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