Electric duct testing device and testing system

Abstract

The utility model relates to the field of testing devices, in particular to an electric duct testing device and a testing system. The electric duct testing device comprises a fixing tool, a testing mechanism and a fixing support. The fixing tool is used for fixing the electric duct; the testing mechanism is installed between the fixing tool and the fixing support, and the testing mechanism can support the fixing tool. The testing mechanism comprises a plurality of sensors, the testing direction of the plurality of sensors is the same as the thrust direction of the electric duct, and the plurality of sensors are arranged in the circumferential direction of the electric duct at intervals. A guide rail is omitted, and the problem caused by friction of the guide rail is avoided. A plurality of tension and pressure sensors are arranged in the circumferential direction of the electric duct at intervals, component force changes in different directions can be detected respectively, the magnitude and direction of thrust can be determined more accurately through comprehensive analysis of the component force, and therefore deviation caused by installation or design is effectively eliminated. The tension and pressure sensors can jointly bear the weight of the electric duct, so that the electric duct is stably supported.

Description

Technical Field

[0001] The present application relates to the field of testing devices, and in particular to an electric duct testing device and a testing system. Background Art

[0002] In existing technology, thrust testing of an electric duct is typically performed by mounting it on a lever arm on a fixture, with a guide rail positioned between the fixture's support base and the lever arm. When the duct is activated, the thrust generated by the duct acts on the bottom of the lever arm near the guide rail, causing the lever arm to slide relative to the support base, thereby applying pressure to a sensor, which then measures the result.

[0003] In actual use, when the electric duct generates thrust, the lever arm will exert a bending moment on the guide rail, causing friction on the contact surface between the guide rail and other components. The existence of friction has a great impact on the accuracy of the test data. Utility Model Content

[0004] The purpose of this application is to provide an electric duct testing device and testing system that can avoid the problems caused by guide rail friction to a certain extent, thereby more accurately measuring the thrust of the electric duct and ensuring the reliability of the data.

[0005] The present application provides an electric duct test device, comprising a fixing fixture, a test mechanism, and a fixing bracket;

[0006] The fixing fixture is used to fix the electric duct;

[0007] The testing mechanism is installed between the fixing fixture and the fixing bracket, and the testing mechanism is capable of supporting the fixing fixture;

[0008] The testing mechanism includes a plurality of sensors, the testing directions of the plurality of sensors are in the same direction as the thrust direction of the electric duct, and the plurality of sensors are arranged at intervals in the circumferential direction of the electric duct.

[0009] In the above technical solution, further, the plurality of sensors are arranged on a preset plane, and the axis of the electric duct is perpendicular to the preset plane;

[0010] Among the multiple lines connecting the projection point of the axis of the electric duct on the preset plane and the centers of the multiple sensors, the angle between two adjacent lines is the same, and the angle is the quotient of 360 degrees and the number of lines.

[0011] In the above technical solution, further, the testing mechanism includes three sensors;

[0012] The sensor is a tension-pressure sensor.

[0013] In the above technical solution, further, the tension and pressure sensor includes a strain portion, a first connecting portion and a second connecting portion, wherein the first connecting portion and the second connecting portion are respectively located at two ends of the strain portion;

[0014] The first connecting portion is connected to the fixing fixture, and a first deformation gap is provided between the fixing fixture, the strain portion, and the second connecting portion;

[0015] The second connecting portion is connected to the fixing bracket, and a second deformation gap is provided between the fixing bracket, the strain portion, and the first connecting portion.

[0016] In the above technical solution, further, the fixing fixture includes a first bracket and a connecting piece; the plurality of tension and pressure sensors are connected to the first bracket;

[0017] A first notch is provided on a side of the first bracket facing the tension and pressure sensor, the first notch being opposite to the strain portion and the second connecting portion to form the first deformation gap;

[0018] The connecting member is connected to the first bracket, and the connecting member is correspondingly arranged to the connecting ear of the electric duct, so that the connecting member is connected to the connecting ear.

[0019] In the above technical solution, further, the fixing tool also includes a reinforcing rib, and the reinforcing rib is arranged between the first bracket and the connecting member.

[0020] In the above technical solution, further, the fixed bracket includes a second bracket and a support base; the plurality of tension and pressure sensors are connected to the second bracket;

[0021] A second notch is provided on a side of the second bracket facing the tension and pressure sensor, and the second notch is opposite to the strain portion and the first connecting portion to form the second deformation gap;

[0022] The supporting base is connected to the second bracket.

[0023] In the above technical solution, further, the first bracket and the second bracket are arranged around the circumference of the electrical duct;

[0024] An installation gap is provided between the first bracket and the second bracket; a plurality of the tension and pressure sensors are arranged at intervals in the installation gap along the length direction of the second bracket and the second bracket.

[0025] In the above technical solution, further, the support base includes a support column and a bottom plate;

[0026] The top end of the support column is connected to the bottom of the second bracket, and the bottom end of the support column is connected to the bottom plate.

[0027] The present application also provides a testing system, including the electric duct testing device described in the above solution.

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] The electric duct test device provided by the present application eliminates the guide rail, thus avoiding the problems caused by the friction of the guide rail. In addition, by setting up a plurality of tension and pressure sensors spaced apart around the circumference of the electric duct, the measurement points are effectively dispersed. On the one hand, the multiple tension and pressure sensors spaced apart can respectively detect the changes in the component forces in different directions. Through the comprehensive analysis of these component forces, the magnitude and direction of the thrust can be determined more accurately, thereby effectively eliminating the deviation caused by installation or design; on the other hand, the multiple tension and pressure sensors can jointly support the weight of the electric duct, thereby providing stable support for the electric duct.

[0030] The present application also provides a test system, including the electric duct test device described in the above solution. Based on the above analysis, it can be seen that the test system also has the above beneficial effects, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0032] Figure 1 This is a first structural schematic diagram of the electric duct test device provided in this application;

[0033] Figure 2 A second structural schematic diagram of the electric duct test device provided in this application;

[0034] Figure 3 A third structural schematic diagram of the electric duct test device provided in this application;

[0035] Figure 4 Schematic diagram of the assembly structure of the tension and pressure sensor, the fixing fixture and the fixing bracket provided in this application;

[0036] Figure 5 A schematic diagram of the structure of the fixed tooling provided for this application;

[0037] Figure 6 This is a schematic diagram of the structure of the fixing bracket provided in this application.

[0038] In the figure: 101-fixed tooling; 102-testing mechanism; 103-fixed bracket; 104-electric duct; 105-tension and pressure sensor; 106-strain part; 107-first connecting part; 108-second connecting part; 109-first bracket; 110-connecting piece; 111-first notched part; 112-second bracket; 113-support base; 114-second notched part; 115-connecting ear; 116-reinforcement rib; 117-support column; 118-bottom plate. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solution of this application in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0040] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0042] Example 1

[0043] See also Figures 1 to 6 As shown, the electric duct testing device provided in this application includes a fixing tool 101, a testing mechanism 102 and a fixing bracket 103.

[0044] The fixing fixture 101 is used to fix the electric duct 104 and keep the electric duct 104 in a horizontal state, so that the actual operation of the electric duct 104 can be simulated during testing, thereby obtaining more accurate test results.

[0045] The test mechanism 102 is installed between the fixed fixture 101 and the fixed bracket 103, and the test mechanism 102 can support the fixed fixture 101. In other words, the test mechanism 102 can not only measure the thrust generated by the electric duct 104, but also support and fix the electric duct 104. When the electric duct 104 is running, the force generated by the electric duct 104 can act on the test mechanism 102 through the fixed fixture 101, so that the test results are more accurate. Specifically, the test mechanism 102 includes a plurality of tension and pressure sensors 105. The test directions of the plurality of tension and pressure sensors 105 are all horizontal and in the same direction as the thrust direction of the electric duct 104. This direction is perpendicular to the gravity direction of the electric duct 104. In this way, the data measured by the tension and pressure sensors 105 are not affected by gravity.

[0046] Furthermore, in the prior art, a guide rail is provided between the bottom of the tooling's lever arm and the support base 113. When the electric duct 104 is operating, the guide rail allows the thrust generated by the electric duct 104 to converge at the bottom of the lever arm. As the electric duct 104 slides on the guide rail, the pressure exerted on the sensor by the lever arm is the thrust of the electric duct 104. However, the present application eliminates the guide rail structure. When the electric duct 104 is operating, the thrust generated by the electric duct 104 will act on various locations of the fixed tooling 101 in varying directions and intensities. If only a single tension / compression sensor 105 is provided, it would be susceptible to installation errors, design flaws, and external environmental factors, resulting in significant deviations in the measured data.

[0047] Therefore, the present application employs multiple tension and pressure sensors 105 spaced apart around the circumference of the electrical duct 104, effectively distributing the measurement points. On the one hand, these spaced-apart tension and pressure sensors 105 can detect force changes in different directions. Comprehensive analysis of these force components allows for more accurate determination of the magnitude and direction of the thrust, effectively eliminating deviations caused by installation or design. On the other hand, these multiple tension and pressure sensors 105 collectively support the weight of the electrical duct 104, providing stable support.

[0048] In an optional solution of this embodiment, multiple sensors are distributed on a preset plane, and the axis of the electric duct 104 is perpendicular to the preset plane; among the multiple lines connecting the projection point of the axis of the electric duct 104 on the preset plane and the centers of the multiple sensors, the angles between two adjacent lines are the same, and the angle is the quotient of 360 degrees and the number of lines.

[0049] Preferably, the testing mechanism 102 includes three tension and pressure sensors 105 .

[0050] In this embodiment, Figure 2Taking the illustrated structure as an example, this application employs three tension and pressure sensors 105, distributed at 120-degree intervals along a predetermined plane around the circumference of the electrical duct 104. This effectively disperses the measurement points, reducing the impact of errors in a single measurement location on the overall measurement result. This distribution enables the sensors to simultaneously sense the thrust generated by the electrical duct 104 from different angles, thereby more comprehensively reflecting the actual thrust situation.

[0051] The distribution of the three tension and pressure sensors 105 at an angle of 120 degrees has many advantages. From a geometric perspective, three points can determine a plane, so the three tension and pressure sensors 105 are located on the same detection surface; and the three tension and pressure sensors 105 are spaced at an angle of 120 degrees, thereby forming a relatively uniform force sensing network on the plane. When the electric duct 104 is operating, the thrust generated will act on the fixed tooling 101 in different directions and intensities. The three tension and pressure sensors 105 can receive force from three different directions simultaneously, greatly improving the range and accuracy of thrust perception.

[0052] Specifically, the three tension and pressure sensors 105 operate independently, and the data they collect is fused using an algorithm. This fusion algorithm fully considers factors such as the position, angle, and measurement accuracy of each tension and pressure sensor 105, performing weighted averaging and error correction on the data, thereby minimizing the impact of installation or design changes. For example, if one of the tension and pressure sensors 105 produces a certain measurement error due to a deviation in its installation position, this error can be promptly detected and corrected by comparing and analyzing the data with the data from the other two tension and pressure sensors 105, ensuring that the final thrust measurement result is more accurate and reliable.

[0053] In addition to the traditional tension and pressure sensors 105, an acceleration sensor can also be added. The tension and pressure sensors 105 directly measure the thrust or tension generated by the electric duct (the direction of the force acting on the tension and pressure sensors 105 varies depending on the installation orientation of the electric duct). The acceleration sensor measures the acceleration of the electric duct 104 and the test system, calculating the thrust using Newton's second law (F = m × a). The data from these two sensors can verify and complement each other, improving measurement accuracy.

[0054] Combination of strain sensors and pressure sensors: Strain sensors are installed at key locations in the test system to measure the deformation caused by thrust. Simultaneously, pressure sensors are installed perpendicular to the thrust direction to measure the reaction force. Thrust is calculated through a comprehensive analysis of strain and pressure data.

[0055] In an optional solution of this embodiment, the tension and pressure sensor 105 includes a strain portion 106, a first connecting portion 107, and a second connecting portion 108. The strain portion 106 is located in the middle of the strain portion 105, and the first connecting portion 107 and the second connecting portion 108 are respectively located at opposite ends of the strain portion 106. The first connecting portion 107 is connected to the fixture 101, and a first deformation gap is defined between the fixture 101 and the strain portion 106 and the second connecting portion 108. The second connecting portion 108 is connected to the fixing bracket 103, and a second deformation gap is defined between the fixing bracket 103 and the strain portion 106 and the first connecting portion 107.

[0056] In this embodiment, when the electric duct 104 is running, the thrust generated by the electric duct 104 enables the fixed tooling 101 and the fixed bracket 103 to apply tension or pressure to the tension and pressure sensor 105 from both sides, and the first deformation gap and the second deformation gap are set to leave deformation space for the strain portion 106. The strain portion 106 can be deformed under the action of tension or pressure, and the tension and pressure sensor 105 can measure the thrust generated by the electric duct 104.

[0057] In an optional solution of this embodiment, specifically, the fixing tool 101 includes a first bracket 109 and a connecting piece 110; a plurality of tension and pressure sensors 105 are connected to the first bracket 109; a first notch portion 111 is provided on the side of the first bracket 109 facing the tension and pressure sensor 105, and the first notch portion 111 is opposite to the strain portion 106 and the second connecting piece 108 to form a first deformation gap; the connecting piece 110 is connected to the first bracket 109, and the connecting piece 110 is correspondingly arranged to the connecting ear 115 of the electric duct 104 so that the connecting piece 110 is connected to the connecting ear 115.

[0058] Furthermore, the fixed bracket 103 includes a second bracket 112 and a support base 113; a plurality of tensile and pressure sensors 105 are connected to the second bracket 112; a second notch portion 114 is provided on the side of the second bracket 112 facing the tensile and pressure sensor 105, and the second notch portion 114 is opposite to the strain portion 106 and the first connecting portion 107 to form a second deformation gap; the support base 113 is connected to the second bracket 112.

[0059] In this embodiment, Figure 2 As shown, connecting ears 115 are provided on both sides of the electrical duct 104. The fixture 101 is also provided with two corresponding connectors 110, which are connected to the two connecting ears 115, respectively, to achieve the installation and fixation of the electrical duct 104. Of the three tension and pressure sensors 105, two are located on the left and right sides of the first bracket 109 and the second bracket 112, respectively, and the other is located at the bottom of the first bracket 109 and the second bracket 112.

[0060] The two upper tension and pressure sensors 105 are placed vertically, with their upper ends connected to the first bracket 109 and their lower ends connected to the second bracket 112. The bottom tension and pressure sensor 105 is placed horizontally, with its right end connected to the first bracket 109 and its left end connected to the second bracket 112.

[0061] On first bracket 109, the two upper tension and pressure sensors 105 are relatively close to the connector 110 supporting the electrical duct 104. Therefore, a first notch 111 is provided as a groove in first bracket 109. The groove covers the strain portion 106 and the second connecting portion 108, and is surrounded by walls to minimize its impact on the strength of first bracket 109, ensuring that fixed bracket 103 stably supports the electrical duct 104. The tension and pressure sensors 105 at the bottom have less impact on the strength of first bracket 109. Therefore, first notch 111 is provided as a recessed platform with a notch at the bottom, making it easier to manufacture.

[0062] On the second bracket 112, at the two upper tension and pressure sensors 105, a second notch 114 is formed as a recessed platform on the second bracket 112. The recessed platform covers the strain portion 106 and the first connecting portion 107, providing deformation space for the tension and pressure sensors 105 and making processing relatively easier. The tension and pressure sensors 105 at the bottom are relatively close to the support base 113 supporting the second bracket 112, so the second notch 114 is formed as a groove on the second bracket 112. The groove covers the strain portion 106 and the first connecting portion 107, and is surrounded by groove walls to reduce the impact of the groove on the strength of the second bracket 112, thereby ensuring a reliable connection between the second bracket 112 and the support base 113.

[0063] In an optional solution of this embodiment, the first bracket 109 and the second bracket 112 are arranged around the circumference of the electrical duct 104. A mounting gap is provided between the first bracket 109 and the second bracket 112, and the plurality of tension and pressure sensors 105 are arranged in the mounting gap along the length direction of the second bracket 112.

[0064] In this embodiment, specifically Figure 2 As shown, the first bracket 109 and the second bracket 112 are respectively set to be U-shaped, the electric duct 104 is located in the area enclosed by the first bracket 109 and the second bracket 112, and the three tension and pressure sensors 105 arranged on the first bracket 109 and the second bracket 112 are arranged around the electric duct 104, so that the thrust of the electric duct 104 can be accurately measured.

[0065] In an optional solution of this embodiment, the fixing tool 101 further includes a reinforcing rib 116 , which is arranged between the first bracket 109 and the connecting member 110 , and can increase the connection strength between the first bracket 109 and the connecting member 110 , thereby providing stable support for the electric duct 104 .

[0066] In an optional solution of this embodiment, the support base 113 includes a support column 117 and a bottom plate 118; the top end of the support column 117 is connected to the bottom of the second bracket 112, and the bottom end of the support column 117 is connected to the bottom plate 118. The bottom plate 118 can increase the support area, thereby achieving stable support for the second bracket 112.

[0067] Example 2

[0068] The electric duct test device in this second embodiment is an improvement based on the above embodiment. The technical contents disclosed in the above embodiment will not be described repeatedly, and the contents disclosed in the above embodiment also belong to the contents disclosed in this second embodiment.

[0069] In an optional solution of this embodiment, the testing mechanism 102 includes four sensors, each arranged at a 90-degree angle. This further increases the thrust sensing angle and improves measurement accuracy. For data processing, a fusion algorithm similar to that used for three sensors can be employed, or a new algorithm suitable for four sensors can be developed.

[0070] Alternatively, the testing mechanism 102 may include two sensors arranged at a 180-degree angle. Furthermore, an auxiliary elastic support structure may be added. This structure can deform to varying degrees depending on the magnitude and direction of the thrust, and the thrust calculation can be aided by measuring the deformation of the elastic support structure. This can, to a certain extent, compensate for the angular coverage limitations of the two sensors.

[0071] Example 3

[0072] Embodiment 3 of the present application provides a testing system, including the electric duct testing device of any of the above embodiments, and thus has all the beneficial technical effects of the electric duct testing device of any of the above embodiments, which will not be repeated here.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application. In addition, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments means that they are within the scope of the present application and form different embodiments.

Claims

1. An electric duct test device, characterized in that: Including fixed fixture, test mechanism and fixed bracket; The fixing fixture is used to fix the electric duct; The testing mechanism is installed between the fixing fixture and the fixing bracket, and the testing mechanism is capable of supporting the fixing fixture; The testing mechanism includes a plurality of sensors, the testing directions of the plurality of sensors are in the same direction as the thrust direction of the electric duct, and the plurality of sensors are arranged at intervals in the circumferential direction of the electric duct.

2. The electric duct test device according to claim 1, characterized in that: The plurality of sensors are arranged on a preset plane, and the axis of the electric duct is perpendicular to the preset plane; Among the multiple lines connecting the projection point of the axis of the electric duct on the preset plane and the centers of the multiple sensors, the angle between two adjacent lines is the same, and the angle is the quotient of 360 degrees and the number of lines.

3. The electric duct testing device according to claim 1 or 2, characterized in that: The testing mechanism includes three sensors; The sensor is a tension-pressure sensor.

4. The electric duct testing device according to claim 3, characterized in that: The tension and pressure sensor includes a strain portion, a first connecting portion, and a second connecting portion, wherein the first connecting portion and the second connecting portion are respectively located at two ends of the strain portion; The first connecting portion is connected to the fixing fixture, and a first deformation gap is provided between the fixing fixture, the strain portion, and the second connecting portion; The second connecting portion is connected to the fixing bracket, and a second deformation gap is provided between the fixing bracket, the strain portion, and the first connecting portion.

5. The electric duct testing device according to claim 4, characterized in that: The fixing fixture includes a first bracket and a connecting piece; the plurality of tension and pressure sensors are connected to the first bracket; A first notch is provided on a side of the first bracket facing the tension and pressure sensor, the first notch being opposite to the strain portion and the second connecting portion to form the first deformation gap; The connecting member is connected to the first bracket, and the connecting member is correspondingly arranged to the connecting ear of the electric duct, so that the connecting member is connected to the connecting ear.

6. The electric duct testing device according to claim 5, characterized in that: The fixing fixture further includes a reinforcing rib, which is arranged between the first bracket and the connecting member.

7. The electric duct testing device according to claim 5, characterized in that: The fixed bracket includes a second bracket and a support base; the plurality of tension and pressure sensors are connected to the second bracket; A second notch is provided on a side of the second bracket facing the tension and pressure sensor, and the second notch is opposite to the strain portion and the first connecting portion to form the second deformation gap; The supporting base is connected to the second bracket.

8. The electric duct testing device according to claim 7, characterized in that: The first bracket and the second bracket are arranged around the circumference of the electrical duct; An installation gap is provided between the first bracket and the second bracket; a plurality of the tension and pressure sensors are arranged at intervals in the installation gap along the length direction of the second bracket and the second bracket.

9. The electric duct testing device according to claim 7, characterized in that: The support base includes a support column and a bottom plate; The top end of the support column is connected to the bottom of the second bracket, and the bottom end of the support column is connected to the bottom plate.

10. A testing system, characterized in that: The device comprises an electric duct test device as claimed in any one of claims 1 to 9.

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