Concentricity measuring device

Abstract

The utility model relates to the field of concentricity measurement, and provides a concentricity measuring device. The concentricity measuring device comprises a measuring trolley, a first displacement sensor and a second displacement sensor. And the measuring trolley is adsorbed on the peripheral surface of the first wheel body and can crawl along the circumferential direction of the first wheel body. A cantilever is arranged on the side, facing the second wheel body, of the measuring trolley. The first displacement sensor and the second displacement sensor are arranged at intervals in the axial direction of the first wheel body and are both installed on the cantilever. The first displacement sensor points to the peripheral face of the first wheel body, and the second displacement sensor points to the peripheral face of the second wheel body. According to the concentricity measuring device, a jacking oil pump does not need to be started, a rotor shaft system does not need to be turned by manpower or a power device, and the concentricity relative deviation between the first wheel body and the second wheel body can be measured through the first displacement sensor and the second displacement sensor only by climbing the measuring trolley on the peripheral surface of the first wheel body; time and labor can be saved, even concentricity measurement operation can be automatically achieved, and manpower and time can be saved.

Description

Technical Field

[0001] The present application belongs to the technical field of concentricity measurement, and in particular relates to a concentricity measurement device. Background Art

[0002] In the rotor shaft system, it is often necessary to measure the relative deviation of the concentricity of two adjacent back wheels connected to each other in order to adjust the installation deviation between the two adjacent back wheels.

[0003] At present, in the concentricity measurement operation, the top shaft oil pump can be started first to lift the rotor shaft system to a suspended state through the top shaft oil pump; then the rotor shaft system is rotated to a preset angle by manpower or a power device; then the top shaft oil pump is stopped to allow the rotor shaft system to remain stationary at the preset angle; and then the readings are read by two micrometers pointing to the outer circumference of two adjacent backrest wheels respectively, so as to calculate the relative concentricity deviation of the two adjacent backrest wheels at the preset angle. Since the values ​​of the preset angles usually include 0°, 45°, 90°, 135°, 180°, 225°, 270°, 315°, and 360°, the above steps need to be repeated until all data in the 360° range are obtained. Based on this, the concentricity measurement operation is obviously time-consuming and laborious. Utility Model Content

[0004] The embodiment of the present application provides a concentricity measuring device, which aims to solve the problem that the concentricity measurement operation is time-consuming and labor-intensive.

[0005] To achieve the above-mentioned purpose, the technical solution adopted in the embodiment of the present application is: a concentricity measuring device for measuring the relative concentricity deviation between a first wheel body and a second wheel body connected and adjacently arranged, the concentricity measuring device comprising:

[0006] A measuring trolley, which is adsorbed on the outer peripheral surface of the first wheel body and can crawl along the circumference of the first wheel body; a cantilever is provided on the side of the measuring trolley facing the second wheel body;

[0007] a first displacement sensor;

[0008] The second displacement sensor, the first displacement sensor and the second displacement sensor are arranged at intervals along the axial direction of the first wheel body, and are both installed on the cantilever; the first displacement sensor points to the outer circumference of the first wheel body, and the second displacement sensor points to the outer circumference of the second wheel body.

[0009] In some embodiments, a magnet is provided on the side of the measuring trolley facing the first wheel body, and the measuring trolley is adsorbed on the outer peripheral surface of the first wheel body through the magnet.

[0010] In some embodiments, a plurality of wheels are provided on a side of the measuring trolley facing the first wheel body, the wheels abut against an outer peripheral surface of the first wheel body, the center axes of the wheels are parallel to the axial direction of the first wheel body, and the wheels are restricted from turning.

[0011] In some embodiments, along the axial direction of the first wheel body, the distance between the first displacement sensor and the second displacement sensor is 5 mm (millimeter) to 10 mm.

[0012] In some embodiments, the accuracy of the first displacement sensor is greater than 0 and less than or equal to 0.005 mm.

[0013] In some embodiments, the resolution of the first displacement sensor is 0.001 mm.

[0014] In some embodiments, the accuracy of the second displacement sensor is greater than 0 and less than or equal to 0.005 mm.

[0015] In some embodiments, the resolution of the second displacement sensor is 0.001 mm.

[0016] In some embodiments, the measuring trolley is provided with an inclinometer.

[0017] In some embodiments, the measuring vehicle is provided with a signal transmitter, and the first displacement sensor, the second displacement sensor and the inclinometer are all signal-connected to the signal transmitter.

[0018] In some embodiments, the concentricity measuring device further includes a signal receiver and an operation display, and the signal transmitter, the signal receiver, and the operation display are sequentially signal-connected.

[0019] In some embodiments, the accuracy of the inclinometer is greater than 0 and less than or equal to 1° (degree).

[0020] In some embodiments, the inclinometer has a resolution of 0.1°.

[0021] In some embodiments, the measuring vehicle is provided with an energy storage power supply.

[0022] In some embodiments, the crawling speed of the measuring vehicle is 1.5 m / min (meters / minute) to 3 m / min.

[0023] The beneficial effects of the concentricity measuring device provided by the present application are:

[0024] The concentricity measuring device provided in the embodiment of the present application can, in the operation of measuring the relative deviation of concentricity between the first wheel body and the second wheel body which are connected and adjacently arranged, adsorb the measuring trolley on the outer peripheral surface of the first wheel body, and make the measuring trolley crawl along the circumference of the first wheel body, and can continuously measure or measure the distance between the measuring trolley and the outer peripheral surface of the first wheel body through the first displacement sensor during the crawling of the measuring trolley along the circumference of the first wheel body, and continuously measure or measure the distance between the measuring trolley and the outer peripheral surface of the second wheel body through the second displacement sensor. Based on this, the radial distance between the outer peripheral surface of the first wheel body and the outer peripheral surface of the second wheel body can be obtained according to the difference between the distance measured by the first displacement sensor and the distance measured by the second displacement sensor, so that the relative deviation of concentricity between the first wheel body and the second wheel body can be judged according to whether the radial distance between the outer peripheral surface of the first wheel body and the outer peripheral surface of the second wheel body changes during the crawling of the measuring trolley, and the relative deviation of concentricity between the first wheel body and the second wheel body can be accurately determined according to the specific change of the radial distance between the outer peripheral surface of the first wheel body and the outer peripheral surface of the second wheel body.

[0025] The concentricity measuring device provided in the embodiment of the present application does not need to start the top shaft oil pump, does not need to rotate the rotor shaft system through manpower or a power device, and only needs to crawl the measuring trolley on the outer peripheral surface of the first wheel body to measure the relative concentricity deviation between the first wheel body and the second wheel body through the first displacement sensor and the second displacement sensor. The measurement speed, measurement efficiency, and measurement accuracy are significantly improved, and even the crawling of the measuring trolley, the measurement of the first displacement sensor, and the measurement of the second displacement sensor can be automated, thereby saving time and effort, and even automating the concentricity measurement operation, which can save manpower and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A side view of the cooperation between the concentricity measuring device provided in an embodiment of the present application and the first wheel body and the second wheel body;

[0028] Figure 2 for Figure 1 A front view of the cooperation between the provided concentricity measuring device and the first wheel body and the second wheel body;

[0029] Figure 3A connection diagram of a partial structure of a concentricity measuring device provided in an embodiment of the present application, wherein a first displacement sensor, a second displacement sensor and an inclinometer are all electrically connected to an energy storage power supply, and are also signal-connected to a signal transmitter, and a signal transmitter, a signal receiver and an operation display are signal-connected in sequence.

[0030] Among them, the reference numerals in the figure are:

[0031] 100-first wheel body, 200-second wheel body; a-circumferential direction of the first wheel body, b-axial direction of the first wheel body;

[0032] 10-measuring trolley, 11-cantilever, 12-magnet, 13-wheel, 14-inclinometer, 15-signal transmitter, 16-energy storage power supply; 20-first displacement sensor, 30-second displacement sensor, d-distance between the first displacement sensor and the second displacement sensor, 40-signal receiver, 50-operation display. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clear, the application is described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain this application and are not used to limit this application.

[0034] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In the rotor shaft system, it is often necessary to measure the relative deviation of the concentricity of two adjacent back wheels connected to each other, so as to adjust the installation deviation between the two adjacent back wheels. For this purpose, two micrometers are usually set up in the bearing box, and the two micrometers are pointed to the outer circumference of the two adjacent back wheels one by one, so that when the rotor shaft system rotates and stays at a preset angle, the relative deviation of the concentricity of the two adjacent back wheels at the preset angle can be calculated through the readings of the two micrometers.

[0038] However, the weight of the rotor shaft system generally ranges from tens of tons to hundreds of tons. In the actual measurement process, it is necessary to start the top shaft oil pump first to lift the rotor shaft system to a suspended state through the top shaft oil pump, and then rotate the rotor shaft system by manpower or power device to rotate the rotor shaft system to a preset angle, and then stop the top shaft oil pump to make the rotor shaft system stand still and maintain the preset angle. Then, the two micrometer readings can be read to calculate the relative deviation of the concentricity of the two adjacent backrest wheels at the preset angle. Since the value points of the preset angle usually include 0°, 45°, 90°, 135°, 180°, 225°, 270°, 315°, and 360°, the above steps need to be repeated until all data in the 360° range are obtained. In order to facilitate the inspection of the repeatability and accuracy of the measurement data, it is necessary to rotate the rotor shaft system one more circle (a total of 2 circles) and repeat the acquisition of all data in the 360° range. At this point, a complete measurement operation has been completed. This measurement operation requires the collaboration of 8-10 people and takes 1-2 hours, which is time-consuming and labor-intensive.

[0039] Moreover, a set of two adjacent backrest wheels needs to be measured three times during the connection process (after tightening 4 bolts, after tightening 8 bolts, and after tightening all bolts); after adjusting the concentricity of the two adjacent backrest wheels according to the measurement results, another measurement is required to check the adjustment results. As a result, the concentricity measurement of multiple sets of two adjacent backrest wheels of the entire rotor shaft system requires 8-10 people to collaborate and take 16-24 hours, which is extremely time-consuming and labor-intensive.

[0040] Therefore, the embodiment of the present application provides a concentricity measuring device, which can save time and effort, automatically realize the concentricity measurement operation, and save manpower and time.

[0041] The specific implementation of this application is described in detail below in conjunction with specific embodiments:

[0042] See also Figure 1 Some embodiments of the present application provide a concentricity measuring device for measuring the relative concentricity deviation between a first wheel body 100 and a second wheel body 200 that are connected and adjacent to each other. The first wheel body 100 and the second wheel body 200 may be, but are not limited to, two adjacent backrest wheels in a rotor shaft system, and the rotor shaft system may be, but are not limited to, a rotor shaft system of a large steam turbine generator set.

[0043] See also Figure 1 , Figure 2 The concentricity measuring device includes a measuring trolley 10, a first displacement sensor 20 and a second displacement sensor 30. The measuring trolley 10 is adsorbed on the outer peripheral surface of the first wheel body 100 and can crawl along the circumferential direction a of the first wheel body 100. A cantilever 11 is provided on the side of the measuring trolley 10 facing the second wheel body 200. The first displacement sensor 20 and the second displacement sensor 30 are arranged at intervals along the axial direction b of the first wheel body 100, and are both installed on the cantilever 11. The first displacement sensor 20 points to the outer peripheral surface of the first wheel body 100, and the second displacement sensor 30 points to the outer peripheral surface of the second wheel body 200.

[0044] It should be noted that the measuring trolley 10 is adsorbed on the outer circumference of the first wheel body 100, so that the wheels 13 of the measuring trolley 10 are closely attached to the outer circumference of the first wheel body 100, so that the measuring trolley 10 can crawl on the outer circumference of the first wheel body 100 and will not fall from the outer circumference of the first wheel body 100 due to gravity. The measuring trolley 10 can be adsorbed on the outer circumference of the first wheel body 100 by, but not limited to, magnetic adsorption, vacuum adsorption, etc.

[0045] When the measuring trolley 10 is adsorbed on the outer circumference of the first wheel body 100, the measuring trolley 10 can crawl along the circumferential direction a of the first wheel body 100, that is, the crawling direction of the measuring trolley 10 is the circumferential direction a of the first wheel body 100, that is, the crawling path of the measuring trolley 10 is an arc or a circle around the central axis of the first wheel body 100. The circumferential direction a of the first wheel body 100 is the circumferential direction of the outer circumferential surface of the first wheel body 100.

[0046] It should also be noted that the measuring trolley 10 is provided with a cantilever 11. When the measuring trolley 10 is adsorbed on the outer peripheral surface of the first wheel body 100, the cantilever 11 is provided on the side of the measuring trolley 10 facing the second wheel body 200. The cantilever 11 is used to install and support the first displacement sensor 20 and the second displacement sensor 30. Figure 1As shown, in some embodiments, the cantilever 11 can be arranged to extend in a straight line along the axial direction b of the first wheel body 100. Such an arrangement can improve the processing convenience, structural stability and structural strength of the cantilever 11, and also facilitate the layout of the first displacement sensor 20 and the second displacement sensor 30 on the cantilever 11. The axial direction b of the first wheel body 100 is the extension direction of the central axis of the first wheel body 100. Of course, in other embodiments, the cantilever 11 can be arranged to extend in a curve.

[0047] The first displacement sensor 20 is installed on the side of the cantilever 11 facing the first wheel body 100, and the installation method can be but not limited to bonding, bolting, etc. The first displacement sensor 20 can be but not limited to a laser displacement sensor. The first displacement sensor 20 points to the outer peripheral surface of the first wheel body 100, and the first displacement sensor 20 can be used to measure the distance between it and the outer peripheral surface of the first wheel body 100.

[0048] The second displacement sensor 30 is installed on the side of the cantilever 11 facing the second wheel body 200, and the installation method can be but not limited to bonding, bolting, etc. The second displacement sensor 30 can be but not limited to a laser displacement sensor. The second displacement sensor 30 points to the outer circumference of the second wheel body 200, and the second displacement sensor 30 can be used to measure the distance between it and the outer circumference of the second wheel body 200.

[0049] The first displacement sensor 20 and the second displacement sensor 30 are arranged at intervals along the axial direction b of the first wheel body 100, that is, the connecting line of the first displacement sensor 20 and the second displacement sensor 30 is parallel to the axial direction b of the first wheel body 100. Based on this, the distance measured by the first displacement sensor 20 and the distance measured by the second displacement sensor 30 can be in the same longitudinal section (the longitudinal section passes through the central axis of the first wheel body 100 and is perpendicular to the end face of the first wheel body 100). In this way, the reference can be unified, so that the difference between the distance measured by the first displacement sensor 20 and the distance measured by the second displacement sensor 30 can reflect the radial distance between the outer peripheral surface of the first wheel body 100 and the outer peripheral surface of the second wheel body 200. Among them, "radial" refers to the radial direction of the first wheel body 100, that is, the diameter direction of the first wheel body 100.

[0050] Based on this, when the measuring vehicle 10 crawls along the circumferential direction a of the first wheel body 100, it is possible to determine whether there is a relative deviation in the concentricity between the first wheel body 100 and the second wheel body 200 by determining whether the radial spacing between the outer circumference of the first wheel body 100 and the outer circumference of the second wheel body 200 changes; the relative deviation in the concentricity between the first wheel body 100 and the second wheel body 200 can also be accurately determined by determining the specific changes in the radial spacing between the outer circumference of the first wheel body 100 and the outer circumference of the second wheel body 200.

[0051] In summary, the concentricity measuring device provided in the embodiment of the present application can adsorb the measuring trolley 10 to the outer peripheral surface of the first wheel body 100 and make the measuring trolley 10 crawl along the circumference a of the first wheel body 100 during the operation of measuring the relative deviation of the concentricity between the first wheel body 100 and the second wheel body 200 which are connected and adjacently arranged, and can continuously measure or measure the distance between the measuring trolley 10 and the outer peripheral surface of the first wheel body 100 through the first displacement sensor 20 during the crawling of the measuring trolley 10 along the circumference a of the first wheel body 100, and can continuously measure or measure the distance between the measuring trolley 10 and the outer peripheral surface of the second wheel body 200 through the second displacement sensor 30. Based on this, the radial spacing between the outer circumference of the first wheel body 100 and the outer circumference of the second wheel body 200 can be obtained according to the difference between the spacing measured by the first displacement sensor 20 and the spacing measured by the second displacement sensor 30. Therefore, according to whether the radial spacing between the outer circumference of the first wheel body 100 and the outer circumference of the second wheel body 200 changes during the crawling of the measuring trolley 10, it can be judged whether there is a relative deviation in the concentricity between the first wheel body 100 and the second wheel body 200. The relative deviation in the concentricity between the first wheel body 100 and the second wheel body 200 can also be accurately determined according to the specific change in the radial spacing between the outer circumference of the first wheel body 100 and the outer circumference of the second wheel body 200.

[0052] The concentricity measuring device provided in the embodiment of the present application does not need to start the top shaft oil pump, does not need to rotate the rotor shaft system through manpower or a power device, and only needs to measure the crawling of the measuring trolley 10 on the outer peripheral surface of the first wheel body 100, so that the relative deviation of the concentricity between the first wheel body 100 and the second wheel body 200 can be measured through the first displacement sensor 20 and the second displacement sensor 30. The measurement speed, measurement efficiency, and measurement accuracy are significantly improved, and even the crawling of the measuring trolley 10, the measurement of the first displacement sensor 20, and the measurement of the second displacement sensor 30 can be automated, thereby saving time and effort, and even automatically realizing the concentricity measurement operation, which can save manpower and time.

[0053] See also Figure 1 , Figure 2 In some embodiments of the present application, a magnet 12 is provided on the side of the measuring trolley 10 facing the first wheel body 100 , and the measuring trolley 10 is adsorbed on the outer peripheral surface of the first wheel body 100 through the magnet 12 .

[0054] It should be noted that a magnet 12 is provided on the side of the measuring trolley 10 facing the first wheel body 100. At least one magnet 12 may be provided. The magnet 12 may be, but not limited to, a strong magnet, a permanent magnet, etc. In some embodiments, the measuring trolley 10 may include a frame, which may be, but not limited to, an aluminum alloy frame, and the magnet 12 may be provided at the bottom of the frame, and the magnet 12 may be provided in the center or not in the center.

[0055] Since the first wheel body 100 is usually a metal part and has magnetism, the side of the measuring vehicle 10 facing the first wheel body 100 can be magnetically adsorbed to the outer peripheral surface of the first wheel body 100 via the magnet 12 .

[0056] By adopting the above scheme, based on the background that the first wheel body 100 is usually a metal part and has magnetism, a magnet 12 can be set on the side of the measuring trolley 10 facing the first wheel body 100, so that the side of the measuring trolley 10 facing the first wheel body 100 can be magnetically adsorbed to the outer peripheral surface of the first wheel body 100 through the magnet 12. Based on this, it is helpful to make the wheels 13 of the measuring trolley 10 close to the outer peripheral surface of the first wheel body 100, and it is helpful to make the measuring trolley 10 crawl on the outer peripheral surface of the first wheel body 100 and will not fall from the outer peripheral surface of the first wheel body 100 due to gravity. Therefore, the structure of the measuring trolley 10 can be simplified and optimized, and the use performance and reliability of the measuring trolley 10 can be improved.

[0057] Of course, in other embodiments, the measuring vehicle 10 may be adsorbed on the outer peripheral surface of the first wheel body 100 by, but not limited to, vacuum adsorption or the like.

[0058] See also Figure 1 , Figure 2 In some embodiments of the present application, a plurality of wheels 13 are provided on the side of the measuring vehicle 10 facing the first wheel body 100, the wheels 13 abut against the outer peripheral surface of the first wheel body 100, the center axis of the wheels 13 is parallel to the axial direction b of the first wheel body 100, and the wheels 13 are restricted from turning.

[0059] It should be noted that a plurality of wheels 13 are provided on the side of the measuring trolley 10 facing the first wheel body 100. In some embodiments, four wheels 13 are provided on the side of the measuring trolley 10 facing the first wheel body 100, and the four wheels 13 are distributed in a rectangular array. Of course, in other embodiments, three wheels 13, or five wheels 13, and so on may be provided on the side of the measuring trolley 10 facing the first wheel body 100. The number of wheels 13 provided may be flexibly set according to the balancing requirements of the measuring trolley 10. The wheels 13 may be, but are not limited to, precision rubber wheels.

[0060] It should also be noted that, when the measuring trolley 10 is adsorbed on the outer peripheral surface of the first wheel body 100, the outer peripheral surfaces of the wheels 13 of the measuring trolley 10 are respectively in contact with the outer peripheral surface of the first wheel body 100, and the central axes of the wheels 13 of the measuring trolley 10 are arranged parallel to each other and are parallel to the axial direction b of the first wheel body 100. The wheels 13 of the measuring trolley 10 are also restricted from turning (for example, turning left, turning right, etc.), so that the wheels 13 of the measuring trolley 10 can only rotate synchronously around their own central axes, and realize forward or backward movement along the circumferential direction a of the first wheel body 100. Among them, the wheels 13 can be driven by a motor (not shown in the figure) or by a motor and a reducer (not shown in the figure).

[0061] By adopting the above solution, each wheel 13 of the measuring trolley 10 can be forced to rotate synchronously only around its own central axis, and move forward or backward along the circumferential direction a of the first wheel body 100. Based on this, the crawling direction and crawling path of the measuring trolley 10 can be constrained, the risk of the crawling direction of the measuring trolley 10 deviating from the circumferential direction a of the first wheel body 100 can be reduced, the data validity and data comparability of the measurement data of the first displacement sensor 20 and the measurement data of the second displacement sensor 30 can be improved, and the measurement accuracy of the concentricity measuring device can be improved.

[0062] See also Figure 1 In some embodiments of the present application, along the axial direction b of the first wheel body 100, the distance d between the first displacement sensor 20 and the second displacement sensor 30 is 5 mm to 10 mm.

[0063] It should be noted that the first displacement sensor 20 and the second displacement sensor 30 are spaced apart along the axial direction b of the first wheel body 100, and the spacing between the first displacement sensor 20 and the second displacement sensor 30 along the axial direction b of the first wheel body 100 is 5 mm to 10 mm. For example, the spacing d between the first displacement sensor 20 and the second displacement sensor 30 can be 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, etc.

[0064] By adopting the above scheme, by setting the spacing between the first displacement sensor 20 and the second displacement sensor 30 along the axial direction b of the first wheel body 100 to 5 mm to 10 mm, the length of the cantilever 11 required to be set can be reduced on the basis of facilitating the first displacement sensor 20 to point to the outer peripheral surface of the first wheel body 100 and facilitating the second displacement sensor 30 to point to the outer peripheral surface of the second wheel body 200. Based on this, the processing error of the cantilever 11 can be reduced, the risk of deformation of the part of the cantilever 11 away from the measuring trolley 10 under the action of external force or gravity can be reduced, and the influence of the processing error and deformation of the cantilever 11 on the first displacement sensor 20 and the second displacement sensor 30 can be reduced, so that the measurement error of the first displacement sensor 20 can be reduced, the measurement error of the second displacement sensor 30 can be reduced, the measurement deviation between the first displacement sensor 20 and the second displacement sensor 30 can be reduced, the data validity and data comparability of the measurement data of the first displacement sensor 20 and the measurement data of the second displacement sensor 30 can be improved, and the measurement accuracy of the concentricity measuring device can be improved.

[0065] See also Figure 1 , Figure 2In some embodiments of the present application, the accuracy of the first displacement sensor 20 is greater than 0 and less than or equal to 0.005 mm. It should be noted that the accuracy of the displacement sensor (such as the first displacement sensor 20 and the second displacement sensor 30) refers to the error between the output data of the displacement sensor and the actual measurement value, which can reflect the accuracy of the measurement value.

[0066] By adopting the above scheme, the accuracy requirement of the first displacement sensor 20 is less than or equal to 0.005 mm. Based on this, the measurement error of the first displacement sensor 20 can be strictly controlled within the range of ±0.005 mm, thereby improving the accuracy of the measurement result of the first displacement sensor 20, reducing the measurement error of the first displacement sensor 20, and improving the measurement accuracy of the concentricity measuring device.

[0067] See also Figure 1 , Figure 2 In some embodiments of the present application, the resolution of the first displacement sensor 20 is 0.001 mm. It should be noted that the resolution of a displacement sensor (such as the first displacement sensor 20 and the second displacement sensor 30) refers to the minimum displacement change that can be measured by the displacement sensor, reflecting the displacement sensor's ability to detect small changes.

[0068] By adopting the above solution, by making the resolution of the first displacement sensor 20 0.001mm, the first displacement sensor 20 can be enabled to detect and distinguish a small displacement change of 0.001mm. Based on this, the measurement accuracy of the first displacement sensor 20 can be improved, and the first displacement sensor 20 can be enabled to meet the measurement scenario of "requiring high-precision measurement data", so that the relative deviation of the concentricity between the first wheel body 100 and the second wheel body 200 can be measured with high precision, which can facilitate the precise control of the relative deviation of the concentricity between the first wheel body 100 and the second wheel body 200 (for example, the relative deviation of the concentricity between the first wheel body 100 and the second wheel body 200 can be precisely controlled to be below 0.015mm).

[0069] See also Figure 1 , Figure 2 In some embodiments of the present application, the accuracy of the second displacement sensor 30 is greater than 0 and less than or equal to 0.005 mm.

[0070] By adopting the above scheme, the accuracy requirement of the second displacement sensor 30 is less than or equal to 0.005 mm. Based on this, the measurement error of the second displacement sensor 30 can be strictly controlled within the range of ±0.005 mm, thereby improving the accuracy of the measurement result of the second displacement sensor 30, reducing the measurement error of the second displacement sensor 30, and improving the measurement accuracy of the concentricity measuring device.

[0071] See also Figure 1 , Figure 2 In some embodiments of the present application, the resolution of the second displacement sensor 30 is 0.001 mm.

[0072] By adopting the above solution, by making the resolution of the second displacement sensor 30 0.001mm, the second displacement sensor 30 can be enabled to detect and distinguish a small displacement change of 0.001mm. Based on this, the measurement accuracy of the second displacement sensor 30 can be improved, and the second displacement sensor 30 can be enabled to meet the measurement scenario of "requiring high-precision measurement data", so that the relative deviation of the concentricity between the second wheel body 200 and the second wheel body 200 can be measured with high precision, which can facilitate the precise control of the relative deviation of the concentricity between the second wheel body 200 and the second wheel body 200 (for example, the relative deviation of the concentricity between the second wheel body 200 and the second wheel body 200 can be precisely controlled to be below 0.015mm).

[0073] See also Figure 1 , Figure 2 In some embodiments of the present application, the measuring vehicle 10 is provided with an inclinometer 14 .

[0074] It should be noted that the inclinometer 14 is also called a 360° inclinometer, an inclinometer sensor, an angle meter, etc. The inclinometer 14 can be arranged inside or outside the measuring trolley 10. During the crawling process of the measuring trolley 10 along the circumferential direction a of the first wheel body 100, the inclinometer 14 can be used to measure the inclination angle of the measuring trolley 10 relative to the horizontal plane or the vertical plane. The measuring range of the inclinometer 14 is 360°.

[0075] In some embodiments, when the measuring trolley 10 is just above the first wheel body 100, the measurement data of the inclinometer 14 can be set to 0° (also 360°); as the measuring trolley 10 crawls counterclockwise along the circumference a of the first wheel body 100, the measurement data of the inclinometer 14 gradually increases; when the measuring trolley 10 is just below the first wheel body 100, the measurement data of the inclinometer 14 can be set to 180°; and so on.

[0076] It should also be noted that the measurement data of the inclinometer 14, the measurement data of the first displacement sensor 20, and the measurement data of the second displacement sensor 30 can be recorded in association to form a set of associated data. That is, when the measurement data of the inclinometer 14 is a preset angle, the measurement data of the inclinometer 14, the measurement data of the first displacement sensor 20, and the measurement data of the second displacement sensor 30 can be automatically recorded as needed to obtain the relative deviation of the concentricity of the first wheel body 100 and the second wheel body 200 at the preset angle.

[0077] In some embodiments, the interval setting of the preset angle can be optionally set between 1° and 10°, that is, it can be set to obtain measurement data every 1° to 10°. Based on this, when the measuring vehicle 10 crawls along the circumference a of the first wheel body 100 for one circle, 36 groups (corresponding to the preset angle interval set at 10°) to 360 groups (corresponding to the preset angle interval set at 1°) of related data can be obtained, and the related data include the measurement data of the inclinometer 14, the measurement data of the first displacement sensor 20, and the measurement data of the second displacement sensor 30.

[0078] By adopting the above scheme, during the crawling process of the measuring trolley 10 along the circumferential direction a of the first wheel body 100, the inclination angle of the measuring trolley 10 relative to the horizontal plane or the vertical plane can be measured in real time by the inclinometer 14 to measure the angular position of the measuring trolley 10. Based on this, when the angular position of the measuring trolley 10 reaches a preset angle, the measurement data of the inclinometer 14, the measurement data of the first displacement sensor 20, and the measurement data of the second displacement sensor 30 can be automatically associated and recorded according to the measurement data of the inclinometer 14. Therefore, on the one hand, it is convenient to automatically measure and record the data of the inclinometer 14, the first displacement sensor 20, and the second displacement sensor 30, and manual reading and recording can be omitted, data deviation caused by human factors can be reduced, the amount of measurement data can be increased, and the measurement speed, measurement efficiency, and measurement accuracy can be improved. On the other hand, the measurement data of the inclinometer 14, the measurement data of the first displacement sensor 20, and the measurement data of the second displacement sensor 30 can be recorded in association, so that when the relative deviation of the concentricity between the first wheel body 100 and the second wheel body 200 is calculated, the specific position where the relative deviation of the concentricity exists can be identified, so that the installation between the first wheel body 100 and the second wheel body 200 can be accurately adjusted to reduce the installation deviation.

[0079] See also Figure 1 , Figure 2 , Figure 3 In some embodiments of the present application, the measuring vehicle 10 is provided with a signal transmitter 15 , and the first displacement sensor 20 , the second displacement sensor 30 and the inclinometer 14 are all connected to the signal transmitter 15 via signals.

[0080] It should be noted that the signal transmitter 15 is a component for sending wireless signals. The signal transmitter 15 can be arranged inside or outside the measuring vehicle 10. The first displacement sensor 20, the second displacement sensor 30 and the inclinometer 14 are all connected to the signal transmitter 15 by signal, and the measurement data of the inclinometer 14, the measurement data of the first displacement sensor 20, and the measurement data of the second displacement sensor 30 can be transmitted to the signal transmitter 15. The signal transmitter 15 can receive the measurement data of the inclinometer 14, the measurement data of the first displacement sensor 20, and the measurement data of the second displacement sensor 30, and convert the electrical signal into a wireless signal and transmit it to the equipment outside the measuring vehicle 10 (such as the signal receiver 40 and the operation display 50 described below, but not limited to this).

[0081] By adopting the above scheme, the measuring trolley 10 can receive and summarize the measurement data of the inclinometer 14, the measurement data of the first displacement sensor 20, and the measurement data of the second displacement sensor 30 through the signal transmitter 15, and convert the electrical signal into a wireless signal and transmit it to the device outside the measuring trolley 10, thereby realizing the remote transmission of the measurement data of the inclinometer 14, the measurement data of the first displacement sensor 20, and the measurement data of the second displacement sensor 30 to the device outside the measuring trolley 10. Based on this, the recording, summarization and transmission of the measurement data can be automatically realized, which can facilitate the subsequent calculation of the relative deviation of the concentricity between the first wheel body 100 and the second wheel body 200. As a result, the automation degree of the concentricity measuring device can be improved, and the operating efficiency and performance of the concentricity measuring device can be improved.

[0082] See also Figure 1 , Figure 2 , Figure 3 In some embodiments of the present application, the concentricity measuring device further includes a signal receiver 40 and an operation display 50, and the signal transmitter 15, the signal receiver 40, and the operation display 50 are sequentially signal-connected.

[0083] It should be noted that the signal receiver 40 is a component for receiving wireless signals. The signal receiver 40 is signal-connected to the signal transmitter 15, and the signal receiver 40 can remotely receive the wireless signal transmitted by the signal transmitter 15 to receive the measurement data of the inclinometer 14, the measurement data of the first displacement sensor 20, and the measurement data of the second displacement sensor 30 from the signal transmitter 15.

[0084] The operation display 50 is a device with calculation and display functions. The operation display 50 can be, but is not limited to, a PLC (Programmable Logic Controller) operation display. The operation display 50 is connected to the signal receiver 40 by signal. The operation display 50 can receive the measurement data of the inclinometer 14, the measurement data of the first displacement sensor 20, and the measurement data of the second displacement sensor 30 from the signal receiver 40, and automatically calculate the relative deviation of the concentricity between the first wheel body 100 and the second wheel body 200, and automatically display and show the calculation result.

[0085] By adopting the above scheme, the concentricity measuring device can automatically receive the measurement data of the inclinometer 14, the measurement data of the first displacement sensor 20, and the measurement data of the second displacement sensor 30 from the signal transmitter 15 through the signal receiver 40. The concentricity measuring device can also automatically receive the measurement data of the inclinometer 14, the measurement data of the first displacement sensor 20, and the measurement data of the second displacement sensor 30 through the calculation display 50, and automatically calculate the relative deviation of the concentricity between the first wheel body 100 and the second wheel body 200, and automatically display and show the calculation result. Based on this, the concentricity measuring device can automatically realize data measurement, data recording, data transmission, data calculation and calculation result display, can omit manual reading, manual recording, and manual calculation, can reduce data deviation caused by human factors, can improve measurement speed, measurement accuracy, calculation speed, and calculation accuracy, can improve the degree of automation of the concentricity measuring device, and can improve the operating efficiency and performance of the concentricity measuring device.

[0086] In actual application scenarios, the concentricity measuring device of the present application can complete a concentricity measurement and provide a calculation result in 1.5 minutes to 3 minutes, which significantly improves the working efficiency.

[0087] Of course, in other embodiments, the signal receiver 40 and the operation display 50 may not be components of the concentricity measuring device, but may be terminals outside the concentricity measuring device.

[0088] See also Figure 1 In some embodiments of the present application, the accuracy of the inclinometer 14 is greater than 0 and less than or equal to 1°. It should be noted that the accuracy of the inclinometer 14 refers to the error between the output data of the inclinometer 14 and the actual measurement value, which can reflect the accuracy of the measurement value.

[0089] By adopting the above scheme, the accuracy requirement of the inclinometer 14 is less than or equal to 1°. Based on this, the measurement error of the inclinometer 14 can be strictly controlled within the range of ±1°, thereby improving the accuracy of the measurement result of the inclinometer 14, reducing the measurement error of the inclinometer 14, and improving the measurement accuracy of the concentricity measuring device.

[0090] See also Figure 1 In some embodiments of the present application, the resolution of the inclinometer 14 is 0.1°. It should be noted that the resolution of the inclinometer 14 refers to the minimum angle change that the inclinometer 14 can measure, reflecting the ability of the inclinometer 14 to detect small changes.

[0091] By adopting the above solution, by making the resolution of the inclinometer 14 0.1°, the inclinometer 14 can be enabled to detect and distinguish a small angle change of 0.1°. Based on this, the measurement accuracy of the inclinometer 14 can be improved, and the inclinometer 14 can be enabled to meet the measurement scenario of "requiring high-precision measurement data", so that the angular position of the measuring vehicle 10 can be measured with high precision, which can facilitate the subsequent precise determination of the specific position where the relative deviation of the concentricity between the first wheel body 100 and the second wheel body 200 occurs.

[0092] See also Figure 1 , Figure 2 , Figure 3 In some embodiments of the present application, the measuring vehicle 10 is provided with an energy storage power supply 16 .

[0093] It should be noted that the energy storage power supply 16 can also be called a mobile power supply. The energy storage power supply 16 can be arranged inside or outside the measuring trolley 10. The energy storage power supply 16 can be charged, stored and discharged. The energy storage power supply 16 can be electrically connected to the first displacement sensor 20, the second displacement sensor 30, the inclinometer 14 and other electrical components in the measuring trolley 10. During the crawling process of the measuring trolley 10, the energy storage power supply 16 can supply power to the first displacement sensor 20, the second displacement sensor 30, the inclinometer 14 and other electrical components.

[0094] By adopting the above solution, during the use of the measuring trolley 10, the measuring trolley 10 can supply power to the first displacement sensor 20, the second displacement sensor 30, the inclinometer 14 and other electrical components through the energy storage power supply 16. Based on this, the first displacement sensor 20, the second displacement sensor 30, the inclinometer 14 and other electrical components can be operated normally and reliably for a long time, and the use of conductive cables to connect the electrical components to an external power supply can be avoided, and the influence of conductive cables on the creeping of the measuring trolley 10 can be reduced, thereby improving the reliability of the use of the measuring trolley 10 and extending the continuous working time of the measuring trolley 10.

[0095] In actual application scenarios, the continuous working time of the measuring vehicle 10 can reach more than 8 hours.

[0096] See also Figure 1 , Figure 2 In some embodiments of the present application, the crawling speed of the measuring trolley 10 is 1.5 m / min to 3 m / min. For example, the crawling speed of the measuring trolley 10 may be 1.5 m / min, 2.0 m / min, 2.5 m / min or 3.0 m / min, etc.

[0097] By adopting the above scheme, the crawling speed of the measuring vehicle 10 along the circumferential direction a of the first wheel body 100 can be moderate, and the measurement accuracy of the first displacement sensor 20, the second displacement sensor 30, the inclinometer 14, etc., as well as the overall measurement speed and measurement efficiency can be taken into account, thereby optimizing the measurement speed, measurement efficiency, and measurement accuracy in a balanced manner.

[0098] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A concentricity measuring device for measuring the relative concentricity deviation between a first wheel body and a second wheel body connected and adjacently arranged, characterized in that: The concentricity measuring device comprises: A measuring trolley, which is adsorbed on the outer peripheral surface of the first wheel body and can crawl along the circumference of the first wheel body; a cantilever is provided on the side of the measuring trolley facing the second wheel body; a first displacement sensor; The second displacement sensor, the first displacement sensor and the second displacement sensor are arranged at intervals along the axial direction of the first wheel body, and are both installed on the cantilever; the first displacement sensor points to the outer circumference of the first wheel body, and the second displacement sensor points to the outer circumference of the second wheel body.

2. The concentricity measuring device according to claim 1, characterized in that: A magnet is provided on a side of the measuring trolley facing the first wheel body, and the measuring trolley is adsorbed on the outer peripheral surface of the first wheel body through the magnet.

3. The concentricity measuring device according to claim 1, characterized in that: A plurality of wheels are provided on the side of the measuring trolley facing the first wheel body, the wheels are in contact with the outer peripheral surface of the first wheel body, the center axes of the wheels are parallel to the axial direction of the first wheel body, and the wheels are restricted from turning.

4. The concentricity measuring device according to claim 1, characterized in that: Along the axial direction of the first wheel body, the distance between the first displacement sensor and the second displacement sensor is 5 mm to 10 mm.

5. The concentricity measuring device according to claim 1, characterized in that: The accuracy of the first displacement sensor is greater than 0 and less than or equal to 0.005 mm; And / or, the resolution of the first displacement sensor is 0.001 mm; And / or, the accuracy of the second displacement sensor is greater than 0 and less than or equal to 0.005 mm; And / or, the resolution of the second displacement sensor is 0.001 mm.

6. The concentricity measuring device according to any one of claims 1 to 5, characterized in that: The measuring trolley is provided with an inclinometer.

7. The concentricity measuring device according to claim 6, characterized in that: The measuring vehicle is provided with a signal transmitter, and the first displacement sensor, the second displacement sensor and the inclinometer are all connected to the signal transmitter by signals.

8. The concentricity measuring device according to claim 7, characterized in that: The concentricity measuring device also includes a signal receiver and an operation display, and the signal transmitter, the signal receiver and the operation display are sequentially signal-connected.

9. The concentricity measuring device according to claim 6, characterized in that: The accuracy of the inclinometer is greater than 0 and less than or equal to 1°; And / or, the resolution of the inclinometer is 0.1°.

10. The concentricity measuring device according to any one of claims 1 to 5, characterized in that: The measuring trolley is provided with an energy storage power supply; And / or, the crawling speed of the measuring trolley is 1.5m / min to 3m / min.

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