Measuring device

Abstract

The utility model provides a measuring device, and belongs to the technical field of measurement. The measuring device comprises a tensile machine, a fixing structure and a testing frame, the tensile machine is provided with a first connecting part and a second connecting part which are spaced; the fixing structure comprises a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate are spaced to form a mounting space, the first mounting plate is connected with the first connecting part, and the second mounting plate is connected with the second connecting part; the testing frame is arranged on one side of the fixing structure and at least comprises one of a first testing piece and a second testing piece, and the testing end of the first testing piece and / or the testing end of the second testing piece face / faces the installation space. According to the measuring device provided by the invention, the measuring precision can be improved, and the relative distance between the first mounting plate and the second mounting plate is adjusted, so that the measuring device is suitable for testing the elongation of to-be-measured objects with different shapes, and the requirements of customers are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of measurement, especially relates to a measuring device. BACKGROUND

[0002] In prior art, the elongation of insulating cylinder is generally tested by vernier caliper manual test or test software reading displacement as elongation. When using vernier caliper test, manual test is needed when insulating cylinder is in stress state, which has safety hazard, and the position of equipment and tooling is limited, which is inconvenient to operate. When using test software to read displacement as elongation, the displacement contains displacement caused by tooling clamping gap and slippage, which cannot accurately reflect the real displacement of insulating cylinder itself. SUMMARY

[0003] Therefore, the utility model aims at overcoming the defects in prior art, and provides a measuring device.

[0004] The utility model provides the following technical scheme: a measuring device, comprising:

[0005] A tension machine has a first connecting part and a second connecting part which are spaced apart.

[0006] A fixing structure comprises a first mounting plate and a second mounting plate, and the first mounting plate and the second mounting plate form an installation space, the first mounting plate is connected with the first connecting part, and the second mounting plate is connected with the second connecting part.

[0007] A test frame is arranged on one side of the fixing structure, and the test frame comprises at least one of a first test piece and a second test piece, and the test end of the first test piece and / or the second test piece faces the installation space.

[0008] In some embodiments, the test frame comprises a frame body, a first connecting rod and a second connecting rod.

[0009] The first connecting rod and the second connecting rod are respectively connected with the frame body in a sliding manner, the first test piece is arranged on the side of the first connecting rod away from the frame body, and the second test piece is arranged on the side of the second connecting rod away from the frame body.

[0010] In some embodiments, the first test piece is arranged on the side of the first mounting plate away from the second mounting plate.

[0011] The first test piece comprises a first test rod and a first digital display meter, the first test rod is connected with the first digital display meter, the first test rod is arranged on the first mounting plate and faces the installation space.

[0012] In some embodiments, the second testing piece is arranged on a side of the second mounting plate facing away from the first mounting plate.

[0013] The second testing piece comprises a second testing rod and a second digital display gauge, the second testing rod is connected with the second digital display gauge, and the second testing rod is arranged on the second mounting plate and faces the mounting space.

[0014] In some embodiments, the fixing structure comprises a first connecting piece and a second connecting piece.

[0015] The first connecting piece is arranged on a side of the first mounting plate and is used for connecting the first mounting plate with the object to be tested.

[0016] The second connecting piece is arranged on a side of the second mounting plate and is used for connecting the second mounting plate with the object to be tested.

[0017] In some embodiments, the frame body comprises a base and at least one supporting rod, the supporting rod is fixed to the base, and the first connecting rod and the second connecting rod are respectively in sliding connection with the supporting rod.

[0018] In some embodiments, the supporting rod is a plurality of supporting rods, the plurality of supporting rods are arranged at intervals, and the axes of two adjacent supporting rods are parallel.

[0019] The axis of the first connecting rod is parallel to the axis of the second connecting rod, and both are perpendicular to the axis of the supporting rod.

[0020] In some embodiments, the first mounting plate is provided with a first opening in communication with the mounting space, and the first testing rod is arranged in the first opening.

[0021] The second mounting plate is provided with a second opening in communication with the mounting space, and the second testing rod is arranged in the second opening.

[0022] In some embodiments, a first sliding structure is arranged between the first connecting rod and the supporting rod, the first sliding structure comprises a first sliding block and a first limiting piece, the first sliding block is slidingly sleeved on the supporting rod, and one end of the first limiting piece is arranged in the first sliding block and abuts against the supporting rod.

[0023] In some embodiments, a second sliding structure is arranged between the second connecting rod and the supporting rod, the second sliding structure comprises a second sliding block and a second limiting piece, the second sliding block is slidingly sleeved on the supporting rod, and one end of the second limiting piece is arranged in the second sliding block and abuts against the supporting rod.

[0024] The embodiment of the utility model has the following advantages: the first test piece and the second test piece are adjusted to abut against the object to be measured installed in the installation space, the first installation plate and the second installation plate are driven by the tension machine to move away from each other to elongate the object to be measured, the elongation of the object to be measured is tested in real time by the first test piece and the second test piece, the measurement accuracy is improved, and the relative distance between the first installation plate and the second installation plate is adjusted to test the elongation of the object to be measured with different shapes, thereby meeting the needs of customers.

[0025] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment, and it should be understood that the following drawings only show some embodiments of the utility model, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the premise of the drawings.

[0027] Figure 1 A structure diagram of a perspective view of a measuring device is shown, which is provided by some embodiments of the utility model;

[0028] Figure 2 A structure diagram of a perspective view of a first installation plate in a measuring device is shown, which is provided by some embodiments of the utility model;

[0029] Figure 3 A structure diagram of a perspective view of a second installation plate in a measuring device is shown, which is provided by some embodiments of the utility model.

[0030] Explanation of main element symbols:

[0031] 100-tension machine; 110-first connecting part; 120-second connecting part; 200-fixing structure; 210-first mounting plate; 211-first opening; 212-first connecting end; 220-second mounting plate; 221-second opening; 222-second connecting end; 230-mounting space; 240-first connecting piece; 250-second connecting piece; 300-test frame; 310-first test piece; 311-first test rod; 312-first digital display meter; 320-second test piece; 321-second test rod; 322-second digital display meter; 330-frame body; 331-base; 332-supporting rod; 340-first connecting rod; 350-second connecting rod; 360-first sliding structure; 361-first sliding block; 362-first limiting piece; 370-second sliding structure; 371-second sliding block; 372-second limiting piece. DETAILED DESCRIPTION

[0032] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, and are used to explain the present application, and cannot be understood as a limitation of the present application.

[0033] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical", "horizontal", "left", "right", and the like as used herein are used for explanation purposes only.

[0034] In the present application, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0035] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as implying or suggesting relative importance or an implied order of magnitude. Thus, features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the template herein is only for the purpose of describing specific embodiments and is not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0037] As shown in Figures 1 to 3 Some embodiments of the present application provide a measuring device, mainly applied to the test of the elongation of the insulating cylinder, to improve the convenience and accuracy of the elongation test of the insulating cylinder.

[0038] The measuring device comprises a tensile testing machine 100, a fixing structure 200 and a test frame 300.

[0039] The tensile testing machine 100 has a first connecting part 110 and a second connecting part 120 which are spaced apart. It should be noted that the tensile testing machine 100 further comprises a driving body, and the first connecting part 110 and the second connecting part 120 are respectively connected with the driving body, so as to drive the first connecting part 110 and the second connecting part 120 to move in position, distance and direction through the driving body.

[0040] The fixing structure 200 comprises a first mounting plate 210 and a second mounting plate 220, and the first mounting plate 210 and the second mounting plate 220 are spaced apart to form a mounting space 230 for accommodating the object to be measured. In this embodiment, the object to be measured can be an insulating cylinder.

[0041] In this embodiment, the first mounting plate 210 is connected with the first connecting part 110, and the second mounting plate 220 is connected with the second connecting part 120. The connection between the first mounting plate 210 and the first connecting part 110 includes any one of clamping, bolt connection, clamping, threaded connection or bolt connection, which can be set according to the actual situation. In addition, the connection between the second mounting plate 220 and the second connecting part 120 includes any one of clamping, bolt connection, clamping, threaded connection or bolt connection, which can be set according to the actual situation.

[0042] It should be noted that the side of the first mounting plate 210 facing the second mounting plate 220 is parallel to the side of the second mounting plate 220 facing the first mounting plate 210.

[0043] In addition, in some embodiments, the side of the first mounting plate 210 facing away from the second mounting plate 220 is provided with a first connecting end 212, so as to be connected with the first connecting part 110 through the first connecting end 212; the side of the second mounting plate 220 facing away from the first mounting plate 210 is provided with a second connecting end 222, so as to be connected with the second connecting part 120 through the second connecting end 222. Specifically, in the present embodiment, the first connecting part 110 is a first clamp, so as to be clamped to the first connecting end 212 through the first clamp; the second connecting part 120 is a second clamp, so as to be clamped to the second connecting end 222 through the second clamp. In this way, the stability of the connection between the first connecting part 110 and the first mounting plate 210, and the stability of the connection between the second connecting part 120 and the second mounting plate 220 are improved.

[0044] It can be understood that, by controlling the relative position between the first connecting part 110 and the second connecting part 120, the distance between the first mounting plate 210 and the second mounting plate 220 is adjusted, so as to adjust the accommodation volume of the mounting space 230, so as to adapt to the elongation test of different objects to be tested, and improve the utilization rate of the measuring device.

[0045] The test rack 300 is arranged on one side of the fixed structure 200, and the test rack 300 at least includes one of a first test piece 310 and a second test piece 320. It can be understood that, in some embodiments, the test rack 300 includes the first test piece 310 and the second test piece 320, and the test ends of the first test piece 310 and the second test piece 320 face the mounting space 230, so that the first test piece 310 and the second test piece 320 can be arranged in the mounting space 230.

[0046] In other embodiments, the test rack 300 includes the first test piece 310, and the test end of the first test piece 310 faces the mounting space 230, so as to test the elongation of the object to be tested arranged in the mounting space 230 through the first test piece 310. In yet other embodiments, the test rack 300 includes the second test piece 320, and the test end of the second test piece 320 faces the mounting space 230, so as to test the elongation of the object to be tested arranged in the mounting space 230 through the second test piece 320.

[0047] In the embodiment, the first test piece 310 and the second test piece 320 can be relatively moved, that is, by adjusting the positions of the first test piece 310 and the second test piece 320, so that the first test piece 310 and the second test piece 320 can abut against the object to be measured installed in the installation space 230, the first mounting plate 210 and the second mounting plate 220 are driven to move away from each other by the tension testing machine 100, so as to elongate the object to be measured, and the elongation of the object to be measured is tested in real time by the first test piece 310 and the second test piece 320, which not only can improve the measurement accuracy, but also can be suitable for testing the elongation of the object to be measured with different shapes by adjusting the relative distance between the first mounting plate 210 and the second mounting plate 220, so as to meet the needs of customers.

[0048] As shown in Figure 1 In some embodiments of the utility model, the test frame 300 includes a frame body 330, a first connecting rod 340 and a second connecting rod 350.

[0049] The first connecting rod 340 and the second connecting rod 350 are respectively connected with the frame body 330 in a sliding manner, that is, the first connecting rod 340 and the second connecting rod 350 can slide relative to the frame body 330. It should be noted that the axis of the first connecting rod 340 is parallel to the axis of the second connecting rod 350, and both are perpendicular to the axis of the frame body 330, and the sliding direction of the first connecting rod 340 and the second connecting rod 350 is parallel to the axis direction of the frame body 330.

[0050] In the embodiment, the first test piece 310 is arranged on the side of the first connecting rod 340 away from the frame body 330, so that the first test piece 310 can be moved synchronously with the first connecting rod 340 relative to the frame body 330 during the movement of the first connecting rod 340, thereby adjusting the position of the first test piece 310. In addition, the second test piece 320 is arranged on the side of the second connecting rod 350 away from the frame body 330, so that the second test piece 320 can be moved synchronously with the second connecting rod 350 relative to the frame body 330 during the movement of the second connecting rod 350, thereby adjusting the position of the second test piece 320, so as to test different objects to be measured, improve the utilization rate of the measuring device and the convenience of adjustment.

[0051] As shown in Figure 1 In some embodiments of the utility model, the first test piece 310 is arranged on the side of the first mounting plate 210 away from the second mounting plate 220, and the test end of the first test piece 310 faces the installation space 230.

[0052] The first test piece 310 includes a first test rod 311 and a first digital display 312. The first test rod 311 is connected to the first digital display 312 so that the first test rod 311 detects the numerical signal of the elongation of the object to be tested installed in the installation space 230 and sends the numerical signal to the first digital display 312, and displays the elongation of the object to be tested through the first digital display 312 so that the user can observe the elongation of the object to be tested in real time.

[0053] In this embodiment, the first test rod 311 is disposed on the first mounting plate 210 and faces the mounting space 230, so as to detect the elongation of the object to be tested installed in the mounting space 230 in real time through the end of the first test rod 311 facing the mounting space 230.

[0054] like Figure 1 As shown, in some embodiments of this utility model, the second test piece 320 is disposed on the side of the second mounting plate 220 away from the first mounting plate 210, and the test end of the second test piece 320 faces the mounting space 230.

[0055] The second test piece 320 includes a second test rod 321 and a second digital display 322. The second test rod 321 is connected to the second digital display 322 so that the second test rod 321 detects the numerical signal of the elongation of the object to be tested installed in the installation space 230 and sends the numerical signal to the second digital display 322, and displays the elongation of the object to be tested through the second digital display 322 so that the user can observe the elongation of the object to be tested in real time.

[0056] In this embodiment, the second test rod 321 is disposed on the second mounting plate 220 and faces the mounting space 230, so as to detect the elongation of the object to be tested installed in the mounting space 230 in real time through the end of the second test rod 321 facing the mounting space 230.

[0057] like Figure 1 As shown, in some embodiments of this utility model, the fixing structure 200 includes a first connector 240 and a second connector 250.

[0058] The first connector 240 is disposed on one side of the first mounting plate 210. The first connector 240 is used to connect the first mounting plate 210 to the object to be tested, so as to ensure the stability of the connection between the object to be tested and the first mounting plate 210. It should be noted that the connection method between the first connector 240 and the object to be tested includes any one of threaded connection, bolt connection, and snap-fit ​​connection.

[0059] In addition, the second connecting piece 250 is arranged on one side of the second mounting plate 220, and is used to connect the second mounting plate 220 with the object to be tested, so as to ensure the stability of the connection between the object to be tested and the second mounting plate 220. It should be noted that the connection mode between the second connecting piece 250 and the object to be tested includes any one of threaded connection, bolt connection and clamping connection.

[0060] In the embodiment, the first connecting piece 240 and the second connecting piece 250 are both bolts, which are used to connect the object to be tested with the first mounting plate 210 through the first connecting piece 240, so as to ensure the stability of the connection between the first mounting plate 210 and the object to be tested, and improve the mounting or dismounting efficiency between the first mounting plate 210 and the object to be tested. Similarly, the second connecting piece 250 is used to connect the object to be tested with the second mounting plate 220, so as to ensure the stability of the connection between the second mounting plate 220 and the object to be tested, and improve the mounting or dismounting efficiency between the second mounting plate 220 and the object to be tested.

[0061] As shown in Figure 1 In some embodiments of the utility model, the frame body 330 includes a base 331 and at least one supporting rod 332, and it can be understood that the number of supporting rods 332 can be one, two or any number of more than two, which can be set according to actual conditions.

[0062] The supporting rod 332 is fixed to the base 331, and the fixing mode between the supporting rod 332 and the base 331 includes spline fixed connection, interference fit fixed connection or fixed connection with a matching end face / flat surface.

[0063] In addition, the first connecting rod 340 and the second connecting rod 350 are respectively connected with the supporting rod 332 in a sliding mode, and the axis of the first connecting rod 340 and the second connecting rod 350 is perpendicular to the axis of the supporting rod 332, and the sliding direction of the first connecting rod 340 and the second connecting rod 350 is parallel to the axis direction of the supporting rod 332.

[0064] It can be understood that the distance between the first connecting rod 340 and the second connecting rod 350 is adjusted to adjust the distance between the first test piece 310 and the second test piece 320, so as to meet the elongation of the object to be tested of different shapes for testing, and improve the convenience of the measuring device.

[0065] As shown in Figure 1 In some embodiments of the utility model, the supporting rod 332 is a plurality of supporting rods 332, which are arranged at intervals, and the axes of two adjacent supporting rods 332 are parallel.

[0066] By setting multiple support rods 332, the stability of the connection between the first connecting rod 340 and the support rod 332 and the second connecting rod 350 and the support rod 332 is improved, the first connecting rod 340 and the second connecting rod 350 are prevented from being offset or inclined on the support rod 332, and the stability and smoothness of the first connecting rod 340 and the second connecting rod 350 during sliding on the support rod 332 are ensured, thereby ensuring the accuracy of the elongation test of the first test piece 310 and the second test piece 320 on the measured object.

[0067] As shown in Figures 1 to 3 In some embodiments of the utility model, the first mounting plate 210 is provided with a first opening 211 communicating with the mounting space 230, and the first test rod 311 is arranged in the first opening 211 to provide a space for the first test rod 311 through the first opening 211. It should be noted that the first opening 211 penetrates the first mounting plate 210 along the thickness direction of the first mounting plate 210, so that the test end of the first test rod 311 can abut against the measured object installed in the mounting space 230, thereby ensuring the accuracy of the elongation test of the measured object.

[0068] In addition, the second mounting plate 220 is provided with a second opening 221 communicating with the mounting space 230, and the second test rod 321 is arranged in the second opening 221 to provide a space for the second test rod 321 through the second opening 221. It should be noted that the second opening 221 penetrates the second mounting plate 220 along the thickness direction of the second mounting plate 220, so that the test end of the second test rod 321 can abut against the measured object installed in the mounting space 230, thereby ensuring the accuracy of the elongation test of the measured object.

[0069] As shown in Figure 1 and Figure 2 In some embodiments of the utility model, a first sliding structure 360 is arranged between the first connecting rod 340 and the support rod 332 to slidably connect the first connecting rod 340 and the support rod 332 through the first sliding structure 360.

[0070] The first sliding structure 360 includes a first sliding block 361 and a first limiting piece 362, the first sliding block 361 is slidably arranged on the support rod 332, and the axis of the first sliding block 361 coincides with the axis of the support rod 332 to ensure the stability and smoothness of the first sliding block 361 during sliding on the support rod 332.

[0071] In addition, one end of the first limiting piece 362 is arranged in the first sliding block 361 and abuts against the support rod 332, so that the first limiting piece 362 provides a limiting action on the first sliding block 361, thereby ensuring the stability of the connection between the first sliding block 361 and the support rod 332.

[0072] In the embodiment, the first limiting piece 362 is a bolt, that is, the first limiting piece 362 is threadedly connected with the first sliding block 361, and one end of the first limiting piece 362 is arranged in the first sliding block 361 and can abut against the circumferential surface of the support rod 332. It can be understood that when there is a gap between the one end of the first limiting piece 362 and the circumferential surface of the support rod 332, the first limiting piece 362 does not provide a limiting action on the first sliding block 361, that is, the first sliding block 361 can slide on the support rod 332 to adjust the position of the first sliding block 361 on the support rod 332, thereby driving the first connecting rod 340 and the first testing piece 310 to move on the support rod 332, so that the testing end of the first testing rod 311 can abut against the object to be tested.

[0073] As shown in Figure 1 and Figure 3 In some embodiments of the utility model, a second sliding structure 370 is arranged between the second connecting rod 350 and the support rod 332, so that the second connecting rod 350 is slidably connected with the support rod 332 through the second sliding structure 370.

[0074] The second sliding structure 370 includes a second sliding block 371 and a second limiting piece 372. The second sliding block 371 is slidably sleeved on the support rod 332, and the axis of the second sliding block 371 coincides with the axis of the support rod 332, so as to ensure the stability and smoothness of the second sliding block 371 during sliding on the support rod 332.

[0075] In addition, one end of the second limiting piece 372 is arranged in the second sliding block 371 and abuts against the support rod 332, so that the second limiting piece 372 provides a limiting action on the second sliding block 371, thereby ensuring the stability of the connection between the second sliding block 371 and the support rod 332.

[0076] In the embodiment, the second limiting member 372 is a bolt, that is, the second limiting member 372 is threadedly connected with the second sliding block 371, and one end of the second limiting member 372 is arranged through the second sliding block 371 and can abut against the circumferential surface of the supporting rod 332. It can be understood that when the second limiting member 372 has a gap between the one end thereof and the circumferential surface of the supporting rod 332, the second limiting member 372 has no limiting effect on the second sliding block 371, that is, the second sliding block 371 can slide on the supporting rod 332 to adjust the position of the second sliding block 371 on the supporting rod 332, so as to drive the second connecting rod 350 and the second testing member 320 to move on the supporting rod 332, so that the testing end of the second testing rod 321 can abut against the object to be measured.

[0077] By adjusting the positions of the first testing rod 311 and the second testing rod 321, the testing end of the first testing rod 311 and the testing end of the second testing rod 321 can abut against two ends of the object to be measured, so as to ensure the accuracy of the elongation test of the object to be measured.

[0078] In all the examples shown and described herein, any specific values should be interpreted as merely exemplary and not as a limitation, and thus other examples of the example embodiments can have different values.

[0079] It should be noted that like reference numerals and letters refer to like items in the drawings, and thus once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0080] The above-described embodiments only express several implementation manners of the present application, the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A measuring device, characterized in that The utility model relates to a tension testing machine, which comprises: a tension testing machine having a first connecting part and a second connecting part spaced apart; a fixing structure comprising a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate being spaced apart to form a mounting space, the first mounting plate being connected to the first connecting part, and the second mounting plate being connected to the second connecting part; a test rack arranged on one side of the fixing structure, the test rack comprising at least one of a first test piece and a second test piece, the test end of the first test piece and / or the second test piece facing the mounting space.

2. The measuring device of claim 1, wherein, The test rack comprises a rack body, a first connecting rod and a second connecting rod; The first connecting rod and the second connecting rod are respectively connected to the rack body in a sliding manner, the first test piece is arranged on the side of the first connecting rod away from the rack body, and the second test piece is arranged on the side of the second connecting rod away from the rack body.

3. The measuring device of claim 2, wherein, The first test piece is arranged on the side of the first mounting plate away from the second mounting plate; The first test piece comprises a first test rod and a first digital display meter, the first test rod is connected to the first digital display meter, and the first test rod is arranged on the first mounting plate and faces the mounting space.

4. The measuring device of claim 3, wherein, The second test piece is arranged on the side of the second mounting plate away from the first mounting plate; The second test piece comprises a second test rod and a second digital display meter, the second test rod is connected to the second digital display meter, and the second test rod is arranged on the second mounting plate and faces the mounting space.

5. The measuring device of claim 2, wherein, The fixing structure comprises a first connecting piece and a second connecting piece; The first connecting piece is arranged on the side of the first mounting plate and used for connecting the first mounting plate to an object to be tested; The second connecting piece is arranged on the side of the second mounting plate and used for connecting the second mounting plate to the object to be tested.

6. The measuring device according to any one of claims 2 to 5, characterized in that, The rack body comprises a base and at least one supporting rod, the supporting rod is fixed to the base, and the first connecting rod and the second connecting rod are respectively connected to the supporting rod in a sliding manner.

7. The measuring device of claim 6, wherein, The supporting rod is in a plurality, the plurality of supporting rods are arranged in a spaced apart manner, and the axes of two adjacent supporting rods are parallel; The axis of the first connecting rod is parallel to the axis of the second connecting rod, and both are perpendicular to the axis of the supporting rod.

8. The measuring device of claim 4, wherein, The first mounting plate is provided with a first opening in communication with the mounting space, and the first test rod is arranged in the first opening; The second mounting plate is provided with a second opening in communication with the mounting space, and the second test rod is arranged in the second opening.

9. The measuring device of claim 6, wherein, A first sliding structure is arranged between the first connecting rod and the supporting rod, the first sliding structure comprises a first sliding block and a first limiting piece, the first sliding block is sleeved on the supporting rod in a sliding manner, and one end of the first limiting piece is arranged in the first sliding block and abuts against the supporting rod.

10. The measuring device of claim 6, wherein, A second sliding structure is arranged between the second connecting rod and the supporting rod, the second sliding structure comprises a second sliding block and a second limiting piece, the second sliding block is sleeved on the supporting rod in a sliding manner, and one end of the second limiting piece is arranged in the second sliding block and abuts against the supporting rod.

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