Automobile part deformation testing device

Abstract

The utility model provides an automobile part deformation testing device, and belongs to the technical field of automobile part detection. The automobile part deformation testing device comprises an alarm, a computer connected with the alarm and a data acquisition unit electrically connected with the alarm, and is characterized in that a connecting end of the data acquisition unit is provided with a resistance-type strain gauge, and a lead end of the resistance-type strain gauge is connected with the connecting end of the data acquisition unit; the mounting frame is arranged on the surface of the automobile part, the bottom of the mounting frame is attached and fixed to a to-be-detected position of the automobile part, the resistance-type strain gauge is arranged at the bottom in the mounting frame, the adhesive patch and the pressing and trimming tool are arranged in the mounting frame, the adhesive patch is arranged on the surface of the resistance-type strain gauge, and the pressing and trimming tool sequentially presses and pastes the resistance-type strain gauge and the adhesive patch. Therefore, the resistance-type strain gauge is fixedly attached to the to-be-detected part of the automobile part. The problem that the strain gauges fall off or shift due to improper attachment is effectively avoided, and therefore the accuracy and reliability of testing are remarkably improved.

Description

Technical Field

[0001] This application relates to the field of automotive parts testing technology, and more specifically, to an automotive parts deformation testing device. Background Technology

[0002] In the automotive manufacturing industry, deformation testing of components is a crucial step in ensuring product quality and safety. Deformation testing assesses the deformation of components under stress, thereby determining whether they meet design and operational requirements. Currently, resistance strain gauges, as an important sensor element, are widely used in the deformation testing of automotive components.

[0003] Currently, the working principle of resistance strain gauges is based on the resistance-strain effect, meaning that when a strain gauge is subjected to mechanical deformation, its resistance value changes. This change can be captured and converted by specialized measuring instruments (such as strain gauges) to ultimately obtain the deformation data of the component. Resistance strain gauges have advantages such as high sensitivity, wide measurement range, and fast response speed, thus playing an important role in the deformation testing of automotive components. However, in practical applications, strain gauges often detach or shift during testing due to improper adhesion (such as weak adhesion, positional deviation, or the presence of air bubbles). This not only reduces the accuracy of the test results but may also lead to test failure and equipment damage. Utility Model Content

[0004] To overcome the above deficiencies, this application provides an automotive component deformation testing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model to solve its technical problem is as follows:

[0006] A deformation testing device for automotive parts includes an alarm connected to a computer and an electrically connected data acquisition unit. The data acquisition unit is characterized by having a resistance strain gauge at its connection end, the lead end of which is connected to the connection end of the data acquisition unit and its bottom is fixed to the area to be tested on the automotive part. The resistance strain gauge is placed at the bottom of a mounting frame, which contains an adhesive patch and a pressing tool. The adhesive patch is placed on the surface of the resistance strain gauge, and the pressing tool sequentially presses the resistance strain gauge and the adhesive patch together.

[0007] Furthermore, the resistive strain gauge includes a base layer, a sensitive grid wire, and a cover layer. The bottom of the base layer is attached and fixed to the area to be tested on the automotive component. The sensitive grid wire is sandwiched between the base layer and the cover layer. The surface of the cover layer is attached to the bottom of the adhesive patch.

[0008] Furthermore, two grooves are respectively formed at the bottom of both ends of the mounting frame, and the lead wires of the sensitive grid wire are connected to the data acquisition device through the inside of the grooves.

[0009] Furthermore, the adhesive patch is larger than the resistive strain gauge and is placed on its surface and pressed by the pressing tool.

[0010] Furthermore, the pressing tool includes an iron plate and a silicone sleeve. The silicone sleeve is fitted onto the outer wall of the iron plate and placed inside the mounting frame. The two ends of the iron plate and the silicone sleeve are respectively attached to the two sides of the inner wall of the mounting frame.

[0011] Furthermore, the bottom of the silicone sleeve has an arc shape and is attached to the surface of the adhesive patch.

[0012] Furthermore, the computer integrates a scanning module, a data processing module, a data storage module, and a display module, which are electrically connected to the alarm and the data acquisition device, respectively.

[0013] This utility model has the following beneficial effects:

[0014] 1. This utility model, through its design including a mounting frame, adhesive pads, and a pressing tool, ensures stable adhesion of the resistance strain gauge to the area to be tested on automotive parts. The extensive coverage of the adhesive pads and the uniform pressing of the pressing tool effectively prevent the strain gauge from falling off or shifting due to improper adhesion, thereby significantly improving the accuracy and reliability of the test.

[0015] 2. The resistive strain gauge of this invention is carefully placed within the mounting frame. Its sensitive grid wire leads cleverly pass through a specially designed groove, tightly connecting to the data acquisition unit. This layout not only provides effective external protection for the leads but also ensures a robust connection and the integrity of signal transmission. Furthermore, a high-performance adhesive is coated on the bottom of the base layer. A pressing tool, combining an iron plate and a silicone sleeve, is used to uniformly and effectively compress the surface of the cover layer, allowing the resistive strain gauge to adhere tightly and securely to the area to be tested on the automotive component. Subsequently, an adhesive patch is properly placed inside the mounting frame, and further precise compression using the pressing tool ensures that the adhesive patch completely covers the resistive strain gauge and is tightly bonded to the area to be tested on the automotive component, thus achieving high-precision fixation and protection of the strain gauge.

[0016] 3. The rounded bottom design of the silicone sleeve of this utility model not only ensures a tight fit with the adhesive patch, but also increases the comfort of operation and reduces the risk of damage during operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the process of the automotive component deformation testing device provided in the embodiments of this application;

[0019] Figure 2 A schematic diagram of the structure of the automotive component deformation testing device provided in the embodiments of this application;

[0020] Figure 3 A schematic diagram of the connection structure between the resistance strain gauge and the mounting frame provided in the embodiments of this application;

[0021] Figure 4 A schematic diagram of the connection structure between the resistance strain gauge, the mounting frame, and the pressing tool provided in the embodiments of this application;

[0022] Figure 5 A schematic diagram of the structure of the compression tool for extruding a resistance strain gauge provided in the embodiments of this application;

[0023] Figure 6 A schematic diagram of the pressing and shaping tool for pressing and extruding adhesive patches provided in the embodiments of this application;

[0024] Figure 7 A schematic diagram of the resistance strain gauge, mounting frame, and adhesive patch flipping structure provided for embodiments of this application;

[0025] Figure 8 A schematic diagram of the pressing tool structure provided in the embodiments of this application.

[0026] In the diagram: 1-Alarm; 2-Computer; 3-Data acquisition unit; 4-Resistant strain gauge; 41-Base layer; 42-Sensitive grid wire; 43-Covering layer; 5-Mounting frame; 51-Groove; 6-Adhesive patch; 7-Pressure tool; 71-Iron plate; 72-Silicone sleeve. Detailed Implementation

[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0028] Example:

[0029] Please see Figure 1 , Figure 2An automotive component deformation testing device includes an alarm 1 connected to a computer 2 and an electrically connected data acquisition unit 3; the computer 2 integrates a scanning module, a data processing module, a data storage module and a display module.

[0030] The system includes an alarm 1 that sounds an alarm when abnormal deformation is detected. A computer 2 processes and analyzes the received data. A data acquisition unit 3, as the core component, has a resistance strain gauge 4 at its connection point. The lead wires of the resistance strain gauge 4 are tightly connected to the connection point of the data acquisition unit 3 to ensure the accuracy and stability of signal transmission. The resistance strain gauge 4 is cleverly positioned at the bottom of the mounting frame 5 for secure attachment to the area of ​​the automotive component to be inspected.

[0031] The data acquisition unit 3 is connected to the leads of the resistance strain gauge 4 to acquire the strain resistance values ​​of the strain gauge. The data acquisition unit 3 should have high precision and real-time performance to ensure accurate capture of changes in the strain gauge resistance value. The computer 2 includes a scanning module, a data processing module, a data storage module, and a display module. The scanning module scans the data acquisition unit 3 and receives the strain resistance values; the data processing module has tolerance limits for comparing the received strain resistance values ​​with the tolerance limits; the data storage module stores the scanned resistance value data; and the display module displays the strain resistance values ​​and the comparison results between the strain resistance values ​​and the tolerance limits in real time. The alarm unit 1 is connected to the computer 2. When the strain resistance value received by the data processing module exceeds the tolerance limit, the alarm unit will sound an alarm to alert the measurement personnel.

[0032] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 A deformation testing device for automotive parts includes a data acquisition unit 3 with a resistance strain gauge 4 at its connection end. The lead end of the resistance strain gauge 4 is connected to the connection end of the data acquisition unit 3, and its bottom is fixed to the area to be tested on the automotive part. The resistance strain gauge 4 is placed at the bottom of a mounting frame 5. An adhesive patch 6 and a pressing tool 7 are placed inside the mounting frame 5. The adhesive patch 6 is placed on the surface of the resistance strain gauge 4, and the pressing tool 7 presses the resistance strain gauge 4 and the adhesive patch 6 in sequence. The resistance strain gauge 4 includes a base layer 41, a sensitive grid wire 42, and a cover layer 43. Two grooves 51 are respectively opened at the bottom of both ends of the mounting frame 5. The pressing tool 7 includes an iron plate 71 and a silicone sleeve 72.

[0033] Among them, the resistance strain gauge 4 is in the form of a thin sheet and is fixedly attached to the part of the automotive component to be tested. When the component deforms, the strain gauge also deforms, thereby changing its resistance value. This change can be used to quantify the degree of deformation of the component.

[0034] The resistive strain gauge 4, as the core component for deformation sensing, has its base layer 41 tightly bonded to the area to be tested on the automotive component using a high-performance adhesive. A sensitive grid wire 42 is sandwiched between the base layer 41 and the cover layer 43. When the automotive component deforms, the sensitive grid wire 42 generates a corresponding change in electrical signal. This change is captured by the data acquisition unit 3 and converted into a digital signal, which is then transmitted to the computer 2 for processing. During the bonding process, the addition of an adhesive patch 6 enhances the adhesion between the resistive strain gauge 4 and the automotive component. Through the uniform pressing of the pressing tool 7, the adhesive patch 6 is tightly bonded to the resistive strain gauge 4 and the automotive component, ensuring the accuracy and reliability of the test.

[0035] The mounting frame 5 provides a stable mounting environment for the resistance strain gauge 4, ensuring its accurate sensing of deformation of automotive parts. Two grooves are formed at the bottom of each end of the mounting frame 5 for the lead wires of the sensing grid 42 to pass through. This design not only protects the lead wires from external interference but also makes the connection more secure and the signal transmission more reliable.

[0036] The adhesive patch 6 is larger than the resistance strain gauge 4, ensuring complete coverage of the strain gauge surface, increasing the contact area with the automotive parts, and improving adhesion. This further enhances the connection stability between the resistance strain gauge 4 and the automotive parts, preventing the strain gauge from detaching or shifting during testing.

[0037] The pressing tool 7 is entirely housed inside the mounting frame 5, with the two ends of the iron plate 71 fitting against the inner walls of the mounting frame 5 to ensure the stability and accuracy of the tool during the pressing process. The iron plate 71 serves as the main body of the pressing tool 7; the operator repeatedly moves the pressing tool 7 to provide the necessary pressure for the resistance strain gauge 4 and the adhesive patch 6. A silicone sleeve 72 is fitted over the outer wall of the iron plate 71, providing cushioning and protection. The bottom of the silicone sleeve 72 is rounded, ensuring a tight fit with the surface of the adhesive patch 6, guaranteeing even pressure distribution and preventing damage to the strain gauge or poor adhesion due to excessive localized pressure.

[0038] The working principle of this automotive component deformation testing device is as follows: First, place the resistance strain gauge 4 at the bottom of the mounting frame 5, ensuring that the lead wire of the sensitive grid wire 42 correctly passes through the groove 51 and connects to the data acquisition unit 3. Place the resistance strain gauge 4 inside the mounting frame 5 at the location of the automotive component to be tested. Use the pressing tool 7 to uniformly press the resistance strain gauge 4, ensuring it is tightly fitted to the automotive component and that the sensitive grid wire 42 can accurately sense deformation. Then, remove the pressing tool 7 and place the adhesive patch 6 inside the mounting frame 5, and then use the pressing tool 7 to uniformly press the adhesive patch 6, ensuring it is tightly fitted to the automotive component. Start the data acquisition unit 3 and computer 2 to begin real-time monitoring and data acquisition of the deformation of the automotive component. The scanning module of computer 2 receives digital signals from the data acquisition unit 3, and the data processing module processes and analyzes the signals to determine whether the automotive component has deformed. If computer 2 detects that the deformation exceeds the preset range, it will immediately trigger the alarm 1 to issue an alarm. Simultaneously, the test results will be stored in the data storage module for subsequent review and analysis. The display module of computer 2 can display the deformation test results in real time, including information such as the degree of deformation and the location of deformation, for the operator's reference.

[0039] It should be noted that the specific models and specifications of the alarm 1, computer 2, and data acquisition device 4 need to be selected and determined according to the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail.

[0040] The power supply and operating principles of the alarm 1, computer 2, and data acquisition unit 4 are clear to those skilled in the art and will not be described in detail here.

[0041] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A deformation testing device for automotive parts, comprising an alarm (1), a computer (2) connected to the alarm (1), and a data acquisition unit (3) electrically connected thereto, characterized in that: The data acquisition unit (3) is equipped with a resistance strain gauge (4) at its connection end. The lead end of the resistance strain gauge (4) is connected to the connection end of the data acquisition unit (3), and its bottom is fixed to the part to be tested on the automotive component. The resistance strain gauge (4) is placed at the bottom of the mounting frame (5). The mounting frame (5) contains an adhesive patch (6) and a pressing tool (7). The adhesive patch (6) is placed on the surface of the resistance strain gauge (4), and the pressing tool (7) presses the resistance strain gauge (4) and the adhesive patch (6) in sequence.

2. The deformation testing device for automotive parts according to claim 1, characterized in that, The resistive strain gauge (4) includes a base layer (41), a sensitive grid wire (42), and a cover layer (43). The bottom of the base layer (41) is attached and fixed to the part to be tested on the automotive component. The sensitive grid wire (42) is sandwiched between the base layer (41) and the cover layer (43). The surface of the cover layer (43) is attached to the bottom of the adhesive patch (6).

3. The deformation testing device for automotive parts according to claim 2, characterized in that, The mounting frame (5) has two grooves (51) at the bottom of each end, and the lead wire of the sensitive grid wire (42) is connected to the data acquisition device (3) through the inside of the groove (51).

4. The deformation testing device for automotive parts according to claim 3, characterized in that, The adhesive patch (6) is larger than the resistive strain gauge (4) and is placed on its surface and pressed by the pressing tool (7).

5. The deformation testing device for automotive parts according to claim 4, characterized in that, The pressing tool (7) includes an iron plate (71) and a silicone sleeve (72). The outer wall of the iron plate (71) is fitted with the silicone sleeve (72) and placed inside the mounting frame (5). The two ends of the iron plate (71) and the silicone sleeve (72) are respectively attached to the two sides of the inner wall of the mounting frame (5).

6. The deformation testing device for automotive parts according to claim 5, characterized in that, The bottom of the silicone sleeve (72) is arc-shaped and is attached to the surface of the adhesive patch (6).

7. The deformation testing device for automotive parts according to claim 6, characterized in that, The computer (2) integrates a scanning module, a data processing module, a data storage module and a display module, and is electrically connected to the alarm (1) and the data acquisition device (3) respectively.

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