Measuring device

Abstract

The utility model provides a measuring device which comprises a measuring shaft and a measuring arm which are oppositely arranged, and the measuring shaft is located on a to-be-measured piece; the connecting seat is located on a to-be-measured point on the to-be-measured piece, and the free end of the connecting seat faces the measuring arm; the distance measuring loop comprises a first connecting line, a distance measuring instrument and a second connecting line which are connected in sequence, the distance measuring instrument is located on the side wall of the measuring shaft, and the measuring end of the distance measuring instrument faces the measuring arm; one end, far away from the range finder, of the first section of connecting line is connected with the measuring arm, and one end, far away from the range finder, of the second section of connecting line is connected with the connecting seat; and when the measuring arm relatively moves to be in contact with the free end of the connecting seat, the distance measuring loop is conducted so as to measure the distance from the axis of the measuring shaft to the point to be measured. According to the invention, the measurement precision can be improved, and the measurement efficiency can also be improved.

Description

Technical Field

[0001] This utility model relates to the field of measurement technology, and in particular to a measuring device. Background Technology

[0002] Currently, the measurement method for large devices or equipment still relies on traditional measuring rulers supplemented by other equipment. This process usually requires multiple people, which affects measurement accuracy and reduces efficiency. Utility Model Content

[0003] In view of this, the purpose of this utility model is to propose a measuring device to solve the problems of low measurement accuracy and low measurement efficiency of existing measuring methods.

[0004] To achieve the above objectives, this utility model provides a measuring device, comprising:

[0005] A measuring axis and a measuring arm are positioned opposite each other, with the measuring axis located on the workpiece to be measured;

[0006] A connecting seat is located on the test point on the test piece, with its free end facing the measuring arm;

[0007] The ranging circuit includes a first connecting line, a rangefinder, and a second connecting line connected in sequence. The rangefinder is located on the side wall of the measuring axis, with its measuring end facing the measuring arm. The end of the first connecting line away from the rangefinder is connected to the measuring arm, and the end of the second connecting line away from the rangefinder is connected to the connecting base.

[0008] When the measuring arm moves relative to the free end of the connecting seat, the ranging circuit is activated to measure the distance from the axis of the measuring shaft to the point to be measured.

[0009] Furthermore, the measuring device also includes a connecting arm, one end of which is fixedly connected to the measuring shaft, and the other end of which is slidably connected to the measuring arm, so that the measuring arm can move relative to the connecting arm to contact the free end of the connecting seat.

[0010] Furthermore, the first connecting line is arranged along the measuring axis, the connecting arm, and the measuring arm, and the second connecting line is arranged along the measuring axis, the device under test, and the connecting seat.

[0011] Furthermore, the connecting seat is a metal magnetic seat, which is magnetically connected to the test point on the test piece.

[0012] Furthermore, the connecting seat has a conical structure, with its tip being the free end facing the measuring arm.

[0013] Furthermore, the measuring arm is arranged parallel to the measuring axis, and the connecting arm is arranged perpendicular to both the measuring arm and the measuring axis.

[0014] Furthermore, the measuring arm has a slider at one end near the connecting arm, and the connecting arm has a groove on the side near the measuring arm that is adapted to the slider. The slider is located in the groove so that the measuring arm can slide relative to the connecting arm.

[0015] Furthermore, the connecting base is the same length as the rangefinder.

[0016] Furthermore, the test piece is a cylinder, the measuring shaft is coaxially connected to the test piece, and the connecting seat is located on the side wall of the test piece. When the measuring arm moves relative to the test piece until it contacts the free end of the connecting seat, the ranging circuit is activated to measure the radius of the test piece.

[0017] Furthermore, the test piece is provided with a rotating shaft, and the measuring shaft is provided with a threaded groove adapted to the rotating shaft. The measuring shaft is coaxially connected to the test piece through the threaded groove and the rotating shaft.

[0018] As can be seen from the above description, the measuring device provided by this utility model has a corresponding measuring axis and a measuring arm. The measuring axis is located on the workpiece to be measured, and the measuring arm contacts the point to be measured on the workpiece through a connecting seat to determine the distance to be measured between the axis of the measuring axis and the point to be measured. Based on this, the distance measuring circuit is activated, and the distance between the axis of the measuring axis and the point to be measured is measured through the distance measuring circuit. During the measurement process, the distance measuring circuit, the measuring arm, and the connecting seat assist in the measurement, which can improve the measurement accuracy of the measuring device. Furthermore, when the measuring arm contacts the connecting seat, the distance measuring circuit is activated, and the distance measuring instrument in the distance measuring circuit measures the distance between the axis of the measuring axis and the point to be measured, which simplifies the measurement process, requires less personnel, and can improve both measurement accuracy and measurement efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a front view structural diagram of the measuring device according to an embodiment of the present utility model.

[0021] In the diagram: 1. Measuring axis; 2. Measuring arm; 3. Component to be measured; 4. Connecting seat; 5. Distance measuring circuit; 51. First connecting line; 52. Distance measuring instrument; 53. Second connecting line; 6. Connecting arm. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0023] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] As described in the background section, the current method for measuring large devices or equipment is still to use traditional measuring rulers supplemented by other equipment. The measurement process usually requires the participation of multiple people, which affects the measurement accuracy and is also not efficient.

[0025] The following explanation uses the measurement of the generator rotor radius as an example: The generator rotor needs to have its radius measured at each stage, such as rotor support assembly, rotor yoke stacking, and rotor pole mounting. The accuracy of the rotor radius measurement directly affects subsequent adjustments and the overall quality of the rotor.

[0026] Currently, rotor radius measurement often employs an inside micrometer in conjunction with a piano wire. However, when measuring larger rotor radii, this method requires multiple connecting rods to the inside micrometer. This results in a significant weight on the micrometer, necessitating multiple people simultaneously supporting it and moving it on the rotor being installed. This is inconvenient and poses risks such as falls from heights and collisions. Furthermore, the accuracy of the measured data can vary due to differences in individual technique, leading to discrepancies in readings and impacting the precision and efficiency of generator rotor radius measurement.

[0027] Based on this, this application proposes a measuring device to improve the measurement accuracy and efficiency of large devices or equipment.

[0028] The following describes the process in detail through one or more specific embodiments.

[0029] like Figure 1 As shown, this application provides a measuring device, including:

[0030] A measuring axis 1 and a measuring arm 2 are positioned opposite each other, with the measuring axis 1 located on the workpiece 3 to be measured.

[0031] The connecting seat 4 is located on the test point on the test piece 3, with its free end facing the measuring arm 2;

[0032] The ranging circuit 5 includes a first connecting line 51, a rangefinder 52, and a second connecting line 53 connected in sequence. The rangefinder 52 is located on the side wall of the measuring shaft 1, with its measuring end facing the measuring arm 2. The end of the first connecting line 51 away from the rangefinder 52 is connected to the measuring arm 2, and the end of the second connecting line 53 away from the rangefinder 52 is connected to the connecting seat 4.

[0033] When the measuring arm 2 moves relative to the free end of the connecting seat 4, the ranging circuit 5 is turned on to measure the distance from the axis of the measuring shaft 1 to the point to be measured.

[0034] Specifically, the connecting seat 4 and the measuring arm 2 are conductors, which ensures that the first connecting line 51 and the second connecting line 53 are conductive on the measuring arm 2 and the connecting seat 4 respectively, and also ensures that the distance measuring circuit 5 is conductive when the measuring arm 2 and the connecting seat 4 are in contact. The measuring device uses the measuring axis 1 and the measuring arm 2, which are arranged opposite each other, as the measuring reference. The connecting seat 4 is located on the point to be measured on the part to be measured 3. When the measuring arm 2 contacts the free end of the connecting seat 4, the distance measuring circuit 5 is conductive, and the measuring device performs measurement. The measured distance is the distance between the axis of the measuring axis 1 and the point to be measured.

[0035] In addition, the lengths of the connecting seat 4 and the rangefinder 52, as well as the radius of the measuring axis 1, are reference values ​​when the measuring device performs measurements. The measuring end of the rangefinder 52 is positioned facing the measuring arm 2, and the value it measures is the distance between the measuring end and the measuring arm 2. Based on the data measured by the rangefinder 52, combined with the known lengths of the connecting seat 4, the length of the rangefinder 52, and the radius of the measuring axis 1, the distance between the axis of the measuring axis 1 and the distance to be measured at the point corresponding to the connecting seat 4 in the direction perpendicular to the axis of the measuring axis 1 can be calculated.

[0036] For example, the length of the connecting seat 4 is L1, the length of the rangefinder 52 is L2, the radius of the measuring axis 1 is r, and the distance between the measuring end and the measuring arm 2 measured by the rangefinder 52 is L3. Therefore, the distance between the axis of the measuring axis 1 and the point to be measured in the direction perpendicular to the axis of the measuring axis 1 is L3 + L2 + r - L1. In this measuring device, L1, L2, and r are fixed values. Therefore, the distance between the axis of the measuring axis 1 and the point to be measured in the direction perpendicular to the axis of the measuring axis 1 can be directly obtained from the value measured by the rangefinder 52, which is simple and quick.

[0037] It should be noted that the position of the measuring axis 1 and the position of the point to be measured can be adjusted according to the content to be measured in order to quickly obtain the measured value. The rangefinder 52 can be a laser rangefinder 52.

[0038] In this embodiment, a measuring axis 1 and a measuring arm 2 are set opposite each other, with the measuring axis 1 located on the part to be measured 3. The measuring arm 2 contacts the point to be measured on the part to be measured 3 through the connecting seat 4 to determine the distance to be measured between the axis of the measuring axis 1 and the point to be measured. Based on this, the distance measuring circuit 5 is turned on, and the distance between the axis of the measuring axis 1 and the point to be measured is measured through the distance measuring circuit 5. During the measurement process, the distance measuring circuit 5, the measuring arm 2 and the connecting seat 4 assist in the measurement, which can improve the measurement accuracy of the measuring device. When the measuring arm 2 contacts the connecting seat 4, the distance measuring circuit 5 is turned on, and the distance measuring instrument 52 in the distance measuring circuit 5 measures the distance between the axis of the measuring axis 1 and the point to be measured, which simplifies the measurement process, requires less personnel, and can improve both measurement accuracy and measurement efficiency.

[0039] In some embodiments, the measuring device further includes a connecting arm 6, one end of which is fixedly connected to the measuring shaft 1 and the other end of which is slidably connected to the measuring arm 2, so that the measuring arm 2 moves relative to the connecting arm 6 to contact the free end of the connecting seat 4.

[0040] Specifically, the connecting arm 6 is used to connect the measuring shaft 1 and the measuring arm 2, which is beneficial to the stable operation of the measuring device. The measuring arm 2 is slidably connected to the connecting arm 6 and can slide on the connecting arm 6 to contact the free end of the connecting seat 4 according to the actual measurement needs, so that the measuring device can perform measurement. This is beneficial to improving the practicality and adaptability of the measuring device, and thus to promoting the application of the measuring device.

[0041] In some embodiments, the first connecting line 51 is arranged along the measuring axis 1, the connecting arm 6 and the measuring arm 2, and the second connecting line 53 is arranged along the measuring axis 1, the test piece 3 and the connecting seat 4.

[0042] Specifically, the first connecting line 51 is arranged along the measuring axis 1, the connecting arm 6 and the measuring arm 2, and the second connecting line 53 is arranged along the measuring axis 1, the test piece 3 and the connecting seat 4. This arrangement of the first connecting line 51 and the second connecting line 53 is neat and tidy, which not only improves the aesthetics of the measuring device but also prevents the first connecting line 51 and the second connecting line 53 from affecting the use of the measuring device.

[0043] In some embodiments, the connecting seat 4 is a metal magnetic seat that is magnetically connected to the test point on the test piece 3.

[0044] Specifically, the connecting seat 4 is a metal magnetic seat, which not only meets the requirement of being a conductor, but also allows the connecting seat 4 to be magnetically connected to the point to be measured. This avoids the connection structure at the connection point between the connecting seat 4 and the point to be measured, which would affect the measurement accuracy and increase the measurement complexity of the measuring device.

[0045] In addition, when the test point is made of metal, the connecting seat 4 can be directly magnetically connected to the test point. When the test point is not made of metal, an embedded metal connecting point can be set on the test point so that the connecting seat 4 can be magnetically connected to the test point.

[0046] In this embodiment, the connecting seat 4 is set as a metal magnetic seat, which is magnetically connected to the test point on the test piece 3. This makes the connecting seat 4 a conductor and also makes the connection between the connecting seat 4 and the test point simple and quick, which helps to improve the measurement efficiency of the measuring device.

[0047] In some embodiments, the connecting seat 4 has a conical structure, with its tip being the free end facing the measuring arm 2.

[0048] Specifically, the connecting seat 4 has a conical structure, with its flat end used to connect to the point to be measured, which is beneficial to the stable connection between the connecting seat 4 and the point to be measured. Its tip is a free end facing the measuring arm 2, so that the measuring arm 2 is close to and in contact with the measuring circuit 5 to conduct the conductor. Its tip can avoid affecting the conductivity of the measuring circuit 5 due to uneven contact with the measuring arm 2, thereby benefiting the stability of the measuring device.

[0049] In some embodiments, the measuring arm 2 is arranged parallel to the measuring shaft 1, and the connecting arm 6 is arranged perpendicular to the measuring arm 2 and the measuring shaft 1.

[0050] Specifically, the measuring arm 2 and the measuring axis 1 serve as the reference for the measuring device to perform measurements. Setting them in parallel facilitates the measuring device in measuring the distance between the axis of the measuring axis 1 and the point to be measured, thereby improving the measurement accuracy of the measuring device.

[0051] In addition, the connecting arm 6 is perpendicular to the measuring arm 2 and the measuring shaft 1, which not only allows the connecting arm 6 to connect the measuring arm 2 and the measuring shaft 1, but also ensures that the distance measuring instrument 52 measures the distance between the measuring arm 2 and the measuring instrument 52. This avoids the situation where the distance measuring instrument 52 cannot measure the measuring arm 2 due to the influence of the connecting arm 6, thereby improving the stability of the measuring device.

[0052] In some embodiments, the measuring arm 2 is provided with a slider at one end near the connecting arm 6, and the connecting arm 6 is provided with a groove on the side near the measuring arm 2 that is adapted to the slider. The slider is located in the groove so that the measuring arm 2 can slide relative to the connecting arm 6.

[0053] Specifically, the measuring arm 2 and the connecting arm 6 are slidably connected by the slide groove and the slider. The slider moves within the slide groove so that the measuring arm 2 can move on the connecting arm 6. This facilitates the setting and also helps to ensure a stable connection between the measuring arm 2 and the connecting arm 6, thereby improving the stability of the measuring device.

[0054] In some embodiments, the connecting base 4 has the same length as the rangefinder 52.

[0055] Specifically, the lengths of the connecting seat 4 and the rangefinder 52, as well as the radius of the measuring axis 1, are all reference values ​​when the measuring device performs measurements. Setting the lengths of the connecting seat 4 and the rangefinder 52 to be the same simplifies the calculation process, allowing the measurement value to be obtained directly from the measurement results of the rangefinder 52 and the radius of the measuring axis 1, thereby further improving the measurement efficiency of the measuring device.

[0056] In some embodiments, the test piece 3 is a cylinder, the measuring shaft 1 is coaxially connected to the test piece 3, the connecting seat 4 is located on the side wall of the test piece 3, and when the measuring arm 2 moves relative to the free end of the connecting seat 4, the ranging circuit 5 is turned on to measure the radius of the test piece 3.

[0057] Specifically, when measuring the radius of a cylinder, the measuring shaft 1 is coaxially connected to the cylinder, and the connecting seat 4 is located on the side wall of the part to be measured 3, that is, the point to be measured is the side wall point of the cylinder. The radius of the cylinder corresponding to the position of the side wall point is measured. Then, the measuring arm 2 is moved on the connecting arm 6 until it contacts the free end of the connecting seat 4. The rangefinder 52 can then measure a value, which is the distance between the measuring end of the rangefinder 52 and the measuring arm 2. Based on this, given the radius of the measuring shaft 1, the length of the rangefinder 52, and the length of the connecting seat 4, the radius at that side wall point on the cylinder can be obtained.

[0058] In this embodiment, the settings for measuring the radius of a cylinder are defined. The measuring device is simple to install and operate during measurement, and has high measurement accuracy, which is conducive to its widespread application.

[0059] For example, the test piece 3 is a generator rotor, and the measuring device is used to measure the radius of the generator rotor. Since the generator rotor is large, the rotor radius corresponding to different test points on its side wall may have errors. It is necessary to measure the radius of different test points, that is, it is necessary to measure the radius of multiple test points of the generator rotor. Since the generator rotor is made of metal, the connecting seat 4 is a metal magnetic seat, which can be magnetically connected to the test point. This simplifies the setting of the connecting seat 4 and enables the measurement of the radius at different positions of the generator rotor, simplifying the measurement procedure and improving measurement efficiency.

[0060] In some embodiments, the test piece 3 is provided with a rotating shaft, and the measuring shaft 1 is provided with a threaded groove adapted to the rotating shaft. The measuring shaft 1 is coaxially connected to the test piece 3 through the threaded groove and the rotating shaft.

[0061] Specifically, the measuring shaft 1 is connected to the rotating shaft of the workpiece 3 under test through a threaded groove, so that the measuring shaft 1 and the workpiece 3 under test are coaxially connected, which helps to improve the measurement accuracy of the measuring device.

[0062] When the rotating shaft has a threaded structure, the measuring shaft 1 is provided with a threaded groove adapted to the rotating shaft, so that the measuring shaft 1 and the rotating shaft are connected through the threaded groove. The threaded groove is coaxially arranged on the measuring shaft 1, which can ensure that the measuring shaft 1 and the rotating shaft are coaxially connected, which is beneficial to improving the measurement accuracy of the measuring device.

[0063] The rotating shaft is provided with a flange, and the center of the flange is located on the axis of the rotating shaft. The measuring shaft 1 is provided with a threaded groove that matches the threaded hole on the flange, so that the measuring shaft 1 and the rotating shaft are connected through the threaded hole on the flange. This not only ensures that the measuring shaft 1 is stably connected to the workpiece 3 under test, but also ensures that the axes of the measuring shaft 1 and the workpiece 3 under test are coincident, which is beneficial to the measurement accuracy of the measuring device.

[0064] For example, the test piece 3 is a generator rotor, the measuring device is used to measure the radius of the generator rotor, the generator rotor is provided with a rotating shaft, a flange is provided at the rotating shaft, and the measuring shaft 1 is provided with a threaded groove near the bottom of the test piece 3 that matches the threaded hole on the flange, so as to be connected to the flange by bolts.

[0065] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the scope of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this utility model as described above, which are not provided in the details for the sake of brevity.

[0066] The embodiments of this utility model are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A measuring device, characterized in that, include: A measuring axis and a measuring arm are positioned opposite each other, with the measuring axis located on the workpiece to be measured; A connecting seat is located on the test point on the test piece, with its free end facing the measuring arm; The ranging circuit includes a first connecting line, a rangefinder, and a second connecting line connected in sequence. The rangefinder is located on the side wall of the measuring axis, with its measuring end facing the measuring arm. The end of the first connecting line away from the rangefinder is connected to the measuring arm, and the end of the second connecting line away from the rangefinder is connected to the connecting base. When the measuring arm moves relative to the free end of the connecting seat, the ranging circuit is activated to measure the distance from the axis of the measuring shaft to the point to be measured.

2. The measuring device according to claim 1, characterized in that, It also includes a connecting arm, one end of which is fixedly connected to the measuring shaft, and the other end of which is slidably connected to the measuring arm, so that the measuring arm can move relative to the connecting arm to contact the free end of the connecting seat.

3. The measuring device according to claim 2, characterized in that, The first connecting line is arranged along the measuring axis, the connecting arm, and the measuring arm, and the second connecting line is arranged along the measuring axis, the device under test, and the connecting seat.

4. The measuring device according to claim 1, characterized in that, The connecting seat is a metal magnetic seat, which is magnetically connected to the test point on the test piece.

5. The measuring device according to claim 1, characterized in that, The connector is a conical structure, with its tip being the free end facing the measuring arm.

6. The measuring device according to claim 2, characterized in that, The measuring arm is arranged parallel to the measuring axis, and the connecting arm is arranged perpendicular to both the measuring arm and the measuring axis.

7. The measuring device according to claim 2, characterized in that, The measuring arm has a slider at one end near the connecting arm, and the connecting arm has a groove on the side near the measuring arm that matches the slider. The slider is located in the groove so that the measuring arm can slide relative to the connecting arm.

8. The measuring device according to claim 1, characterized in that, The connecting base is the same length as the rangefinder.

9. The measuring device according to claim 1, characterized in that, The test piece is a cylinder, the measuring shaft is coaxially connected to the test piece, and the connecting seat is located on the side wall of the test piece. When the measuring arm moves relative to the test piece until it contacts the free end of the connecting seat, the ranging circuit is activated to measure the radius of the test piece.

10. The measuring device according to claim 9, characterized in that, The test piece is provided with a rotating shaft, and the measuring shaft is provided with a threaded groove adapted to the rotating shaft. The measuring shaft is coaxially connected to the test piece through the threaded groove and the rotating shaft.

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