Shafting centering test system

Abstract

The utility model particularly relates to a shafting centering test system, a test device comprises a shell assembly, an axial test assembly, a radial test assembly, a first rotating speed sensor, a second rotating speed sensor, an incremental code belt, a zero position marking piece and an indicating piece, the axis of the axial test assembly is parallel to the axis of the shell assembly, and the axis of the radial test assembly is parallel to the axis of the shell assembly. The axis of the radial testing assembly is perpendicular to the axis of the shell assembly, the first rotating speed sensor and the second rotating speed sensor are sequentially arranged in the axis direction of the shell assembly, the first rotating speed sensor is arranged on the side, close to the shell assembly, of the second rotating speed sensor, and the incremental code belt and the zero marking piece are arranged on a tested shafting; the axial testing assembly and the radial testing assembly obtain the misalignment angle value of the tested shafting, and the first rotating speed sensor, the second rotating speed sensor, the incremental code belt and the zero position marking piece can obtain the parallel misalignment offset of the tested shafting, and the parallel misalignment offset is indicated through the indicating piece. According to the scheme, shaft system centering adjustment can be facilitated.

Description

Technical Field

[0001] The present application belongs to the technical field of fault diagnosis, and in particular relates to a shaft alignment test system. Background Art

[0002] During the assembly and connection of the electromechanical coupling system with the test bench, the shaft system needs to be aligned to prevent the prototype splines, bearings, shafts and housings from being damaged due to additional loading force caused by shaft system misalignment. Therefore, the shaft system often needs to be aligned during use.

[0003] The commonly used alignment detection methods and equipment are:

[0004] First, the dial indicator circular runout detection is to detect the shaft alignment by setting a needle jump on the circumference of the shaft to test the axial runout of the shaft. The operation is simple and quick, but it cannot distinguish between parallel misalignment and angular misalignment, and is not convenient for misalignment adjustment.

[0005] Second, laser alignment detection, by setting laser emitting and receiving devices on the two axes respectively, measures the parallel deviation and angular deviation in the horizontal and vertical directions according to the geometric principle of similar triangles, which can guide the alignment adjustment. However, this method requires the arrangement of laser emitting and receiving devices on the two axes, and cannot be used for the alignment assembly of shaft system holes and shafts. Utility Model Content

[0006] The purpose of the present application is to provide a shaft system alignment test system that can facilitate the adjustment of shaft system alignment.

[0007] The present application provides a shaft alignment test system, comprising:

[0008] A test device, comprising a housing assembly, an axial test assembly, a radial test assembly, a first speed sensor, a second speed sensor, an incremental code tape, a zero position marker and an indicator, wherein the housing assembly is provided with a placement position for placing a shaft system to be measured, the axial test assembly is arranged on the end face of the housing assembly, the axis of the axial test assembly is parallel to the axis of the housing assembly, the radial test assembly is arranged on the housing assembly, the axis of the radial test assembly is perpendicular to the axis of the housing assembly, the first speed sensor and the second speed sensor are arranged in sequence in the axial direction of the housing assembly, the first speed sensor and the second speed sensor are both arranged on a side of the housing assembly away from the axial test assembly, and the first speed sensor is arranged on a side of the second speed sensor close to the housing assembly, the incremental code tape and the zero position marker are arranged on the shaft system to be measured, and the incremental code tape and the zero position marker are arranged at intervals from each other, and the indicator is arranged on a side of the housing assembly away from the axial test assembly;

[0009] Among them, the axial test component and the radial test component can obtain the misalignment angle value of the measured shaft system, and the first speed sensor, the second speed sensor, the incremental code belt and the zero position marker can obtain the parallel misalignment offset of the measured shaft system and indicate it through the indicator.

[0010] In an exemplary embodiment of the present application, the housing assembly includes a first end cover, and the first end cover is disposed on an end surface of one end of the housing assembly;

[0011] The testing device includes multiple groups of axial testing components, which are arranged at intervals on the end face of the shell component, each group of the axial testing components includes an end face sleeve, an end face ejector and a pressure sensor, the end face sleeve is embedded in the first end cover, and the end faces of the end face sleeves of each group of the axial testing components are located in the same plane, the pressure sensor is arranged between the end face sleeve and the first shell, and the end face ejector is sleeved in the end face sleeve.

[0012] In an exemplary embodiment of the present application, the test device comprises at least two groups of the radial test assemblies, and the at least two groups of the radial test assemblies are sequentially spaced apart in the axial direction of the housing assembly;

[0013] Each group of the radial test components includes a displacement detection part, which includes a radial sleeve, a radial ejector, an elastic member, a positioning pin and a displacement sensor. The radial sleeve is threadedly connected to the housing assembly, and the radial ejector is embedded in the radial sleeve through the elastic member. The radial ejector can move in the axial direction of the radial sleeve. The positioning pin is inserted in the radial sleeve to fix the radial ejector. The displacement sensor is arranged in the radial sleeve to measure the displacement of the radial ejector.

[0014] In an exemplary embodiment of the present application, the shaft alignment test system includes a first radial test assembly and a second radial test assembly, each of the first radial test assembly and the second radial test assembly includes four displacement detection parts, the four displacement detection parts are arranged in sequence in the circumferential direction of the shell assembly, and the spacing intervals between adjacent displacement detection parts are the same.

[0015] In an exemplary embodiment of the present application, the housing assembly includes a first housing and a second housing, the first end of the first housing is connected to the first end of the second housing, the second end of the first housing is connected to the second end of the second housing, and the placement position is formed between the first housing and the second housing;

[0016] The shaft alignment test system also includes a universal joint and a magnetic base, and the magnetic base is connected to the second shell through the universal joint.

[0017] In an exemplary embodiment of the present application, the housing assembly further comprises a second end cover, and the second end cover is arranged on a side of the first housing and the second housing away from the axial test assembly;

[0018] The first rotation speed sensor, the second rotation speed sensor and the indicator are all arranged on the second end cover.

[0019] In an exemplary embodiment of the present application, the axial test components are all arranged on the first housing;

[0020] The central angle formed between adjacent displacement detection parts is 90°.

[0021] In an exemplary embodiment of the present application, the first rotation speed sensor is arranged on a side of the second rotation speed sensor close to the second end cover, and the first rotation speed sensor and the second rotation speed sensor are connected by adhesive bonding.

[0022] In an exemplary embodiment of the present application, the incremental code tape and the zero position marker are both adhered to the measured shaft system by adhesives, and the incremental code tape and the zero position marker are located on a side of the second end cover away from the axial test assembly.

[0023] In an exemplary embodiment of the present application, the shaft alignment test system also includes a data acquisition and display module, which includes a data acquisition unit and a display unit. The data acquisition unit is used to collect data recorded by the axial test assembly, the radial test assembly, the first speed sensor, the second speed sensor, the incremental code tape and the zero position marker, and display the data through the display unit.

[0024] This application scheme has the following beneficial effects:

[0025] The present application scheme includes a shaft alignment test system, which can measure the angular misalignment of the shaft system by using an axial test component and a radial test component for the shaft-to-hole alignment assembly. The present scheme records the rotation angle of the shaft while measuring the radial displacement of the shaft system, finds the angular position of the maximum misalignment through the relationship between the radial displacement and the angle, and indicates it through an indicator, thereby facilitating the adjustment of the shaft alignment and being more conducive to the subsequent assembly and connection of the electromechanical coupling system and the test bench.

[0026] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0027] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A schematic diagram of the structure of the test device provided in Example 1 of the present application is shown;

[0030] Figure 2 A schematic diagram of the structure of the test system provided in the first embodiment of the present application is shown;

[0031] Figure 3 A schematic diagram showing the structure of the indicator provided in the first embodiment of the present application being arranged on the second end cover;

[0032] Figure 4 A schematic diagram showing the structure of three groups of axial test assemblies provided in the first embodiment of the present application arranged on the first housing is shown;

[0033] Figure 5 A schematic diagram of the structure of the radial test assembly after displacement provided by the first embodiment of the present application is shown;

[0034] Figure 6 A schematic diagram of the test method flow provided in Example 2 of the present application is shown;

[0035] Figure 7 A schematic diagram of a process for setting the center of a circle of a testing device concentrically with the center of a circle of a shaft system to be tested provided in the second embodiment of the present application is shown;

[0036] Figure 8 A schematic diagram of a process for making the axis of the test device parallel to the reference axis provided in the second embodiment of the present application is shown;

[0037] Fig. 9 A schematic diagram of the misalignment angle deviation of a shaft system under test provided by an embodiment of the present application is shown;

[0038] Fig.10 The radial displacement angle curve provided by the embodiment of the present application is shown.

[0039] Description of reference numerals:

[0040] 10. Test system;

[0041] 100, test device; 110, housing assembly; 111, first end cover; 112, first housing; 113, second housing; 114, second end cover; 120, axial test assembly; 121, end sleeve; 122, end ejector; 123, pressure sensor; 130, radial test assembly; 130a, first radial test assembly; 130b, second radial test assembly; 131, displacement detection unit; 1311, radial sleeve; 1312, radial ejector; 1313, positioning pin; 1314, displacement sensor; 140, first speed sensor; 150, second speed sensor; 160, incremental code tape; 170, zero mark; 180, indicator; 181, LED indicator; 190, universal joint; 1100, magnetic seat;

[0042] 200, measured shaft system; 300, data acquisition and display module; 310, data acquisition unit; 320, display unit; 400, reference axis line; 500, reference shaft system axis line. DETAILED DESCRIPTION

[0043] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of example embodiments to those skilled in the art.

[0044] In this application, 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. Thus, 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.

[0045] In this application, unless otherwise clearly specified and limited, the terms "assembly", "connection" 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.

[0046] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0047] Embodiment 1

[0048] The first embodiment of the present application provides a shaft alignment test system 10, which includes a test device 100, see Figure 1 , Figure 2 and Figure 3 As shown, the testing device 100 comprises:

[0049] The housing assembly 110 is provided with a placement position for placing the shaft system 200 to be measured.

[0050] The axial test assembly 120 is disposed on the end surface of the housing assembly 110 and is extended along the axis of the housing assembly 110 , that is, the axis of the axial test assembly 120 is parallel to the axis of the housing assembly 110 .

[0051] The radial test assembly 130 is disposed on the housing assembly 110 , and the axis of the radial test assembly 130 is perpendicular to the axis of the housing assembly 110 , that is, the radial test assembly 130 is extended along a direction perpendicular to the axis of the housing assembly 110 .

[0052] The first rotation speed sensor 140 may be a photoelectric pulse rotation speed sensor.

[0053] The second speed sensor 150 can be a photoelectric pulse speed sensor. The first speed sensor 140 and the second speed sensor 150 are arranged in sequence in the axial direction of the housing assembly 110. The first speed sensor 140 and the second speed sensor 150 are both installed on the side of the housing assembly 110 away from the axial test assembly 120, and the first speed sensor 140 is arranged on the side of the second speed sensor 150 close to the housing assembly 110, that is, the second speed sensor 150 is connected to the housing assembly 110 through the first speed sensor 140. Figure 2 shown.

[0054] The incremental code tape 160 and the zero position marking component 170 are both arranged on the measured shaft system 200 .

[0055] The indicator 180 is fixed to the side of the housing assembly 110 away from the axial test assembly 120, see Figure 3 shown.

[0056] Among them, the present application scheme can obtain the misalignment angle value of the measured shaft system 200 through the axial test component 120 and the radial test component 130, and the first speed sensor 140, the second speed sensor 150, the incremental code belt 160 and the zero position marker 170 can obtain the parallel misalignment offset of the measured shaft system 200, and indicate the actual position of the angle corresponding to the maximum radial displacement of the measured shaft system 200 in the measured shaft system 200 through the indicator 180. The assembler can adjust the parallel misalignment of the measured shaft system 200 according to the position indicated by the indicator 180 until the radial displacement of the measured shaft system 200 is within the required range, that is, the alignment of the shaft system assembly is completed.

[0057] That is to say, the present application scheme can be used for shaft-to-hole alignment assembly through the axial test component 120 and the radial test component 130, and can measure the angular misalignment of the measured shaft system 200; in addition, while measuring the radial displacement of the measured shaft system 200, the rotation angle of the measured shaft system 200 is recorded, and the radial displacement angle curve is obtained through the first speed sensor 140, the second speed sensor 150 and the zero position marker 170, so as to find the angular position of the maximum misalignment through the relationship between the radial displacement and the angle, and indicate it through the indicator 180, thereby facilitating the adjustment of the shaft system alignment.

[0058] In the examples of this application, see Figure 2 and Figure 4As shown, the housing assembly 110 includes a first end cover 111, which is covered on the end face of one end of the housing assembly 110; the test device 100 includes a plurality of axial test assemblies 120, which are arranged at intervals on the end face of the housing assembly 110; each axial test assembly 120 includes an end face sleeve 121, an end face ejector pin 122 and a pressure sensor 123, and the end face sleeve 121 is embedded in the first end cover 111, that is, the end face sleeve 121 is inserted in the first end cover 111, and the axis of the end face sleeve 121 is parallel to the axis of the housing assembly 110, and the end face sleeve 121 is perpendicular to the end face of the first end cover 111. The dimensions of the end face sleeve 121 of each axial test assembly 120 in the axial direction of the housing assembly 110 are completely consistent, and the depth of each end face sleeve 121 embedded in the first end cover 111 is also consistent, so as to ensure that the conditions of each axial test assembly 120 are the same. The pressure sensor 123 is embedded in the bottom of the end sleeve 121 and is arranged between the end sleeve 121 and the housing assembly 110. The wiring harness of the pressure sensor 123 is arranged in the housing assembly 110 and led outward to transmit the signal obtained by the pressure sensor 123 to the outside. The end ejector pin 122 is sleeved in the end sleeve 121, and the end ejector pins 122 in each group of axial test assemblies 120 have the same length. When the end ejector pin 122 applies a squeezing force to the end sleeve 121, the pressure sensor 123 at the bottom of the end sleeve 121 will obtain the pressure of the end ejector pin 122, and the moving distance of the end ejector pin 122 in the end sleeve 121 can be obtained through the pressure signal of the pressure sensor 123. It is also possible to judge the moving distance of the end ejector pins 122 in different groups through the values ​​of the pressure sensors 123 in different groups. Furthermore, the value of the pressure sensor 123 in each group can be adjusted to be the same, and the moving distance of the end face ejector 122 in each group can also be controlled to be the same.

[0059] In the embodiment of the present application, the testing device 100 includes at least two groups of radial testing components 130, and the at least two groups of radial testing components 130 are sequentially spaced in the axial direction of the housing component 110; see Figure 2As shown, each set of radial test components 130 includes a displacement detection unit 131, which includes a radial sleeve 1311, a radial ejector pin 1312, an elastic member, a positioning pin 1313 and a displacement sensor 1314. The radial sleeve 1311 is connected to the housing assembly 110 by threads. The radial sleeve 1311 is installed strictly along the radial direction of the housing assembly 110. The radial ejector pin 1312 is embedded in the radial sleeve 1311 through the elastic member, and the radial ejector pin 1312 can move along the axial direction of the radial sleeve 1311, that is, the radial ejector pin 1312 moves in the radial direction of the housing assembly 110. The positioning pin 1313 can pass through the pin hole of the side wall of the radial sleeve 1311 to fix the radial ejector pin 1312 in the radial sleeve 1311. The displacement sensor 1314 is arranged in the radial sleeve 1311 to measure the displacement of the radial ejector pin 1312.

[0060] It should be noted that the elastic member may be a spring.

[0061] In the examples of this application, see Figure 2 and Figure 5 As shown, this test device 100 includes a first radial test component 130a and a second radial test component 130b. The two groups of radial test components 130 are arranged in sequence in the axial direction of the shell component 110. Each group of radial test components 130 includes four displacement detection parts 131. The four displacement detection parts 131 are arranged in sequence in the circumferential direction of the shell component 110. The intervals between adjacent displacement detection parts 131 are the same, and the central angle formed between adjacent displacement detection parts 131 is a right angle, that is, an angle of 90° is formed between adjacent displacement detection parts 131, and the displacement detection parts 131 are opposite to each other.

[0062] In the embodiment of the present application, four displacement detection parts 131 are respectively arranged at the top, bottom, left and right of the measured shaft system 200. It can be understood that the first radial test assembly 130a and the second radial test assembly 130b have the same structure and shape.

[0063] In addition, a distance L between the first radial test assembly 130 a and the second radial test assembly 130 b in the axial direction of the housing assembly 110 is provided.

[0064] It is worth mentioning that see Figure 4 As shown, the shell assembly 110 includes a first shell 112 and a second shell 113, wherein the first end of the first shell 112 is connected to the first end of the second shell 113, and the second end of the first shell 112 is connected to the second end of the second shell 113, that is, the first shell 112 and the second shell 113 are connected end to end.

[0065] In the embodiment of the present application, the first shell 112 and the second shell 113 can be positioned and installed by positioning pins, and then fixed by tightening bolts. The first end cover 111 is fixed to the first shell 112 and the second shell 113 by bolts. When testing the measured shaft system 200, it is necessary to sleeve the first shell 112 and the second shell 113 outside the measured shaft system 200, that is, the inner edges of the first shell 112 and the second shell 113 are matched with the outer edges of the measured shaft system 200, and the above-mentioned placement position is formed between the first shell 112 and the second shell 113. In addition, this shaft alignment test system 10 also includes a universal joint 190 and a magnetic base 1100. The second shell 113, the universal joint 190 and the magnetic base 1100 are connected by bolts, and the magnetic base 1100 is fixed to the ground or a fixed plane. This magnetic base 1100 is connected to the second shell 113 through the universal joint 190.

[0066] The arc surface areas of the first shell 112 and the second shell 113 may be the same. The three sets of axial test components 120 are all disposed on the first shell 112 , and the three sets of axial test components 120 are disposed on the end surface of the first shell 112 at intervals from each other.

[0067] In the examples of this application, see Figure 2 and Figure 3 As shown, the housing assembly 110 further includes a second end cover 114, which is disposed on a side of the first housing 112 and the second housing 113 away from the axial test assembly 120, that is, the first end cover 111 and the second end cover 114 are respectively located on opposite sides of the housing assembly 110. The first speed sensor 140, the second speed sensor 150 and the indicator 180 are all disposed on the second end cover 114.

[0068] In the embodiment of the present application, the first speed sensor 140 and the second speed sensor 150 are coaxially bonded to each other via an adhesive member, which may be glue, double-sided tape, etc. The first speed sensor 140 may also be bonded to the second end cap 114 via an adhesive member.

[0069] In the embodiment of the present application, the incremental code tape 160 and the zero mark 170 are both attached to the measured shaft system 200 through an adhesive, and the incremental code tape 160 and the zero mark 170 are located on the side of the second end cover 114 away from the axial test assembly 120. The adhesive can be bonded with the same material as the above-mentioned adhesive, such as glue, double-sided tape and other materials.

[0070] In the examples of this application, see Figure 3 As shown, the indicator 180 may be a light group formed by a plurality of LED indicator lights 181 , and the plurality of LED indicator lights 181 are fixed on the second end cover 114 by glue.

[0071] In an embodiment of the present application, the shaft alignment test system 10 also includes a data acquisition and display module 300, which includes a data acquisition unit 310 and a display unit 320. The data acquisition unit 310 is used to collect data recorded by the axial test assembly 120, the radial test assembly 130, the first speed sensor 140, the second speed sensor 150, the incremental code band 160 and the zero position marker 170. The data acquisition unit 310 displays the collected data signal through the display unit 320.

[0072] Understandably, see Figure 2 As shown, the data acquisition unit 310 is connected to the axial test assembly 120 , the radial test assembly 130 , the first rotation speed sensor 140 , the second rotation speed sensor 150 , the incremental code tape 160 and the zero position marker 170 through a wiring harness.

[0073] See also Figure 6 As shown, the testing method of the shaft alignment testing system 10 includes the following steps:

[0074] Step S100 , setting the center of the test device 100 concentrically with the center of the tested shaft system 200 .

[0075] Step S200 , adjusting the angle of the testing device 100 so that the axis of the testing device 100 is parallel to the reference axis 400 .

[0076] Step S300, calculating the misalignment angle of the measured shaft system 200 in the plane, and adjusting the measured shaft system 200 according to the misalignment angle.

[0077] Step S400, obtaining a radial displacement angle curve of the shaft system 200 under test.

[0078] Step S500 , obtaining the angle corresponding to the maximum radial displacement of the measured shaft system 200 according to the radial displacement angle curve, and indicating the corresponding angle through the indicator 180 .

[0079] Among them, see Figure 7 As shown, the testing method of setting the center of the test device 100 concentrically with the center of the tested shaft system 200 includes the following steps:

[0080] Step S110 , the axial test assembly 120 is brought into contact with the vertical end surface of the reference shafting axis 500 .

[0081] It is understandable that before testing, the first housing 112 and the second housing 113 need to be installed on the tested shaft system 200 and fixed by tightening bolts. During the installation process, three sets of end face ejectors 122 need to be installed on the first housing 112, and the end face ejectors 122 of the three sets of axial test assemblies 120 need to be fully in contact with the vertical end face of the reference shaft system.

[0082] Step S120 , fixing the displacement detection part 131 located at the bottom of the measured shaft system 200 in the first radial test assembly 130 a and the radial ejector pin 1312 in the same group and adjacent displacement detection part 131 in the radial sleeve 1311 .

[0083] It can be understood that the radial ejector pin 1312 in the displacement detection part 131 at the bottom of the measured shaft system 200 and the radial ejector pin 1312 of the displacement detection part 131 in the same group and adjacent to the first radial test assembly 130a are fixed by the positioning pin 1313. For example, the first radial test assembly 130a includes the first displacement detection part at the top of the measured shaft system 200, the second displacement detection part and the third displacement detection part at the left and right parts of the measured shaft system 200, and the fourth displacement detection part at the bottom of the measured shaft system 200. When fixing, the radial ejector pin 1312 in the fourth displacement detection part and the third / second displacement detection part can be fixed.

[0084] It should be understood that in the present application, the radial ejector pin 1312 can be fixed by the positioning pin 1313. After the radial ejector pin 1312 is fixed by the positioning pin 1313, the radial ejector pin 1312 will move along with the movement of the radial sleeve 1311. The radial ejector pin 1312 that is not fixed by the positioning pin 1313 can move in the radial sleeve 1311.

[0085] For example, the radial ejector pins 1312 in the fourth displacement detecting part and the third displacement detecting part are fixed by the positioning pins 1313, and the radial ejector pins 1312 in the fourth displacement detecting part and the third displacement detecting part move following the movement of the radial sleeve 1311, while the radial ejector pins 1312 in the first displacement detecting part and the second displacement detecting part are not fixed by the positioning pins 1313, and the first displacement detecting part and the second displacement detecting part can move in the sleeve.

[0086] Step S130 , the radial ejector pins 1312 in the four displacement detection parts 131 in the first radial test assembly 130 a are brought into contact with the shaft system 200 to be tested, and the radial ejector pins 1312 in the four displacement detection parts 131 have the same displacement.

[0087] By rotating the radial sleeve 1311 that fixes the radial ejector pins 1312, the four radial ejector pins 1312 are in full contact with the end surface of the measured shaft system 200, and the radial displacements of the four radial ejector pins 1312 are the same. Figure 5 The middle displacement a is the distance between the zero position marker 170 of the radial ejector pin 1312 and the displacement sensor 1314. The displacement of the radial ejector pin 1312 at the relative position is a'. The difference between the displacement a and the displacement a' is zero, so as to achieve the purpose of the circle center of the test device 100 being concentric with the circle of the tested shaft system 200.

[0088] In addition, the radial ejector pins 1312 in the second radial test assembly 130b do not need to be fixed to the radial sleeve 1311 by the positioning pins 1313, that is, the radial ejector pins 1312 in the second radial test assembly 130b are in full contact with the measured shaft system 200 under the action of the elastic member in the radial sleeve 1311, and can move freely in the radial sleeve 1311 as the angle of the test device 100 changes.

[0089] Among them, see Figure 8 As shown, the method of adjusting the angle of the test device 100 so that the axis of the test device 100 is parallel to the reference axis 400 includes:

[0090] Step S210 , the end face ejector pins 122 in the three groups of axial test assemblies 120 are brought into contact with the end faces of the reference shaft system axis 500 at a vertical position.

[0091] Step S220 , adjusting the pressures of the pressure sensors 123 in the three groups of axial test assemblies 120 to be the same.

[0092] Among them, three end face ejectors 122 of equal length are fully in contact with the vertical end face of the reference shaft system axis 500, and the angle of the test device 100 is adjusted to make the pressure values ​​in the three pressure sensors 123 the same, so that the end face of the test device 100 is parallel to the vertical end face of the reference shaft system axis 500. Since the end face of the test device 100 is perpendicular to the axis of the test device 100, the axis of the test device 100 is parallel to the reference axis 400.

[0093] After adjusting the axis of the test device 100 to be parallel to the reference axis 400 , the bolts of the universal joint 190 and the magnetic base 1100 are tightened to fix the position of the test device 100 .

[0094] Furthermore, after calculating the misalignment angle of the measured shaft system 200 in a plane, the method of adjusting the measured shaft system 200 according to the misalignment angle includes:

[0095] See also Fig. 9As shown, the displacements a and a' of the radial ejector pins 1312 in the first radial test assembly 130a are obtained, and the displacements b and b' of the radial ejector pins 1312 in the second radial test assembly 130b are obtained. The distance between two adjacent groups of radial test assemblies 130 in the axial direction of the housing assembly 110 is L;

[0096] Calculate the misalignment angle α, in,

[0097] It can be understood that, through the above steps 100 to 200, the radial ejector pins 1312 in the first radial test assembly 130a have the same displacement, that is, a=a', and the radial ejector pins 1312 in the second radial test assembly 130b are always in contact with the measured shaft system 200. As the position of the test device 100 changes, displacements b and b' are generated. The axial distance between the first radial test assembly 130a and the second radial test assembly 130b is L.

[0098] The angular offset direction of the measured axis system 200 is determined according to the radial displacement. If ab<0, it is determined that the measured axis system 200 is offset downward; if ab=0, it is determined that the measured axis system 200 is parallel to the reference axis system; if ab>0, it is determined that the measured axis system 200 is offset upward.

[0099] Then, the misalignment angle is calculated based on the radial displacement of the tested radial ejector pin 1312. in,

[0100] It is understandable that the direction and magnitude of the misalignment angle offset can be displayed on the display unit 320, and then the angle of the measured shaft system 200 can be adjusted according to the result so that the angle specification of the measured shaft system 200 is within the required range.

[0101] After the misalignment angle of the shaft system is adjusted, the positioning pin 1313 of the radial ejector 1312 in the first radial test assembly 130a is removed, that is, the positioning pin 1313 of the radial ejector 1312 on the fourth displacement test part and the third displacement test part is removed. Then the shaft system 200 to be tested is rotated, and all radial ejectors 1312 in the test device 100 are radially displaced along the radial direction of the shaft system 200 to be tested. The second speed sensor 150 and the zero position marker 170 are used to trigger the recording zero position of the angle and radial displacement. The rotation angle of the shaft system 200 to be tested is recorded by the first speed sensor 140 and the incremental code tape 160. The rotation angle and radial displacement of the shaft system 200 to be tested are recorded synchronously to form a radial displacement angle curve. The difference between the maximum and minimum radial displacements of the shaft system 200 to be tested is S. S / 2 is taken as the offset of the parallel misalignment of the shaft system, such as Fig.10 shown.

[0102] According to the recorded radial displacement angle curve, the angle corresponding to the maximum displacement (maximum offset of parallel misalignment) of the measured shaft system 200 can be found. Then, the actual position of the point on the measured shaft system 200 is indicated by the indicator 180 at the second end cover 114, and the assembler can adjust the parallel misalignment of the measured shaft system 200 according to the position indicated by the indicator 180 until the radial displacement S of the measured shaft system 200 is within the required range, that is, the centering adjustment of the shaft system assembly is completed.

[0103] The present application solution can be used for the centering assembly of the shaft to the hole through the axial test assembly 120 and the radial test assembly 130, and can measure the misalignment angle of the shaft system. The present solution records the rotation angle of the measured shaft system 200 while measuring the radial displacement of the measured shaft system 200. Through the relationship between the radial displacement and the angle, the angular position of the maximum misalignment can be found, and indicated through the indicator 180, thereby facilitating the adjustment of the shaft system alignment.

[0104] Embodiment 2

[0105] Embodiment 2 of the present application provides a shaft alignment test method, which is implemented using the shaft alignment test system 10 in Embodiment 1. The shaft alignment test system 10 includes any structure described in Embodiment 1, which will not be described in detail here.

[0106] See also Figure 6 As shown, this test method includes the following steps:

[0107] Step S100 , setting the center of the test device 100 concentrically with the center of the tested shaft system 200 .

[0108] Step S200 , adjusting the angle of the testing device 100 so that the axis of the testing device 100 is parallel to the reference axis 400 .

[0109] Step S300, calculating the misalignment angle of the measured shaft system 200 in the plane, and adjusting the measured shaft system 200 according to the misalignment angle.

[0110] Step S400, obtaining a radial displacement angle curve of the shaft system 200 under test.

[0111] Step S500 , obtaining the angle corresponding to the maximum radial displacement of the measured shaft system 200 according to the radial displacement angle curve, and indicating the corresponding angle through the indicator 180 .

[0112] Among them, see Figure 7 As shown, the testing method of setting the center of the test device 100 concentrically with the center of the tested shaft system 200 includes the following steps:

[0113] Step S110 , the axial test assembly 120 is brought into contact with the vertical end surface of the reference shafting axis 500 .

[0114] It is understandable that before testing, the first housing 112 and the second housing 113 need to be installed on the tested shaft system 200 and fixed by tightening bolts. During the installation process, three sets of end face ejectors 122 need to be installed on the first housing 112, and the end face ejectors 122 of the three sets of axial test assemblies 120 need to be fully in contact with the vertical end face of the reference shaft system.

[0115] Step S120 , fixing the displacement detection part 131 located at the bottom of the measured shaft system 200 in the first radial test assembly 130 a and the radial ejector pin 1312 in the same group and adjacent displacement detection part 131 in the radial sleeve 1311 .

[0116] It can be understood that the radial ejector pin 1312 in the displacement detection part 131 at the bottom of the measured shaft system 200 and the radial ejector pin 1312 of the displacement detection part 131 in the same group and adjacent to the first radial test assembly 130a are fixed by the positioning pin 1313. For example, the first radial test assembly 130a includes the first displacement detection part at the top of the measured shaft system 200, the second displacement detection part and the third displacement detection part at the left and right parts of the measured shaft system 200, and the fourth displacement detection part at the bottom of the measured shaft system 200. When fixing, the radial ejector pin 1312 in the fourth displacement detection part and the third / second displacement detection part can be fixed.

[0117] It should be understood that in the present application, the radial ejector pin 1312 can be fixed by the positioning pin 1313. After the radial ejector pin 1312 is fixed by the positioning pin 1313, the radial ejector pin 1312 will move along with the movement of the radial sleeve 1311. The radial ejector pin 1312 that is not fixed by the positioning pin 1313 can move in the radial sleeve 1311.

[0118] For example, the radial ejector pins 1312 in the fourth displacement detecting part and the third displacement detecting part are fixed by the positioning pins 1313, and the radial ejector pins 1312 in the fourth displacement detecting part and the third displacement detecting part move following the movement of the radial sleeve 1311, while the radial ejector pins 1312 in the first displacement detecting part and the second displacement detecting part are not fixed by the positioning pins 1313, and the first displacement detecting part and the second displacement detecting part can move in the sleeve.

[0119] Step S130 , the radial ejector pins 1312 in the four displacement detection parts 131 in the first radial test assembly 130 a are brought into contact with the shaft system 200 to be tested, and the radial ejector pins 1312 in the four displacement detection parts 131 have the same displacement.

[0120] By rotating the radial sleeve 1311 that fixes the radial ejector pins 1312, the four radial ejector pins 1312 are in full contact with the end surface of the measured shaft system 200, and the radial displacements of the four radial ejector pins 1312 are the same. Figure 5 The middle displacement a is the distance between the zero position marker 170 of the radial ejector pin 1312 and the displacement sensor 1314, the displacement of the radial ejector pin 1312 at the relative position is a', and the difference between the displacement a and the displacement a' is zero, so as to achieve the purpose of concentricity between the center of the test device 100 and the center of the tested shaft system 200.

[0121] In addition, the radial ejector pins 1312 in the second radial test assembly 130b do not need to be fixed to the radial sleeve 1311 by the positioning pins 1313, that is, the radial ejector pins 1312 in the second radial test assembly 130b are in full contact with the measured shaft system 200 under the action of the elastic member in the radial sleeve 1311, and can move freely in the radial sleeve 1311 as the angle of the test device 100 changes.

[0122] Among them, see Figure 8 As shown, the method of adjusting the angle of the test device 100 so that the axis of the test device 100 is parallel to the reference axis 400 includes:

[0123] Step S210 , the end face ejector pins 122 in the three groups of axial test assemblies 120 are brought into contact with the end faces of the reference shaft system axis 500 at a vertical position.

[0124] Step S220 , adjusting the pressures of the pressure sensors 123 in the three groups of axial test assemblies 120 to be the same.

[0125] Among them, three end face ejectors 122 of equal length are fully in contact with the vertical end face of the reference shaft system axis 500, and the angle of the test device 100 is adjusted to make the pressure values ​​in the three pressure sensors 123 the same, so that the end face of the test device 100 is parallel to the vertical end face of the reference shaft system axis 500. Since the end face of the test device 100 is perpendicular to the axis of the test device 100, the axis of the test device 100 is parallel to the reference axis 400.

[0126] After adjusting the axis of the test device 100 to be parallel to the reference axis 400 , the bolts of the universal joint 190 and the magnetic base 1100 are tightened to fix the position of the test device 100 .

[0127] Furthermore, after calculating the misalignment angle of the measured shaft system 200 in a plane, the method of adjusting the measured shaft system 200 according to the misalignment angle includes:

[0128] See also Fig. 9As shown, the displacements a and a' of the radial ejector pins 1312 in the first radial test assembly 130a are obtained, and the displacements b and b' of the radial ejector pins 1312 in the second radial test assembly 130b are obtained. The distance between two adjacent groups of radial test assemblies 130 in the axial direction of the housing assembly 110 is L;

[0129] Calculate the misalignment angle α, in,

[0130] It can be understood that, through the above steps 100 to 200, the radial ejector pins 1312 in the first radial test assembly 130a have the same displacement, that is, a=a', and the radial ejector pins 1312 in the second radial test assembly 130b are always in contact with the measured shaft system 200. As the position of the test device 100 changes, displacements b and b' are generated. The axial distance between the first radial test assembly 130a and the second radial test assembly 130b is L.

[0131] The angular offset direction of the measured axis system 200 is determined according to the radial displacement. If ab<0, it is determined that the measured axis system 200 is offset downward; if ab=0, it is determined that the measured axis system 200 is parallel to the reference axis system; if ab>0, it is determined that the measured axis system 200 is offset upward.

[0132] Then, the misalignment angle is calculated based on the radial displacement of the tested radial ejector pin 1312. The misalignment angle α is calculated as follows: in,

[0133] It is understandable that the direction and magnitude of the misalignment angle offset can be displayed on the display unit 320, and then the angle of the measured shaft system 200 can be adjusted according to the result so that the angle specification of the measured shaft system 200 is within the required range.

[0134] After the misalignment angle of the shaft system is adjusted, the positioning pin 1313 of the radial ejector 1312 in the first radial test assembly 130a is removed, that is, the positioning pin 1313 of the radial ejector 1312 on the fourth displacement test part and the third displacement test part is removed. Then the shaft system 200 to be tested is rotated, and all radial ejectors 1312 in the test device 100 are radially displaced along the radial direction of the shaft system 200 to be tested. The second speed sensor 150 and the zero position marker 170 are used to trigger the recording zero position of the angle and radial displacement. The rotation angle of the shaft system 200 to be tested is recorded by the first speed sensor 140 and the incremental code tape 160. The rotation angle and radial displacement of the shaft system 200 to be tested are recorded synchronously to form a radial displacement angle curve. The difference between the maximum and minimum radial displacements of the shaft system 200 to be tested is S. S / 2 is taken as the offset of the parallel misalignment of the shaft system, such as Fig.10 shown.

[0135] According to the recorded radial displacement angle curve, the angle corresponding to the maximum displacement (maximum offset of parallel misalignment) of the measured shaft system 200 can be found. Then, the actual position of the point in the measured shaft system 200 is indicated by the indicator 180 at the second end cover 114, and the assembler can adjust the parallel misalignment of the measured shaft system 200 according to the position indicated by the indicator 180 until the radial displacement S of the measured shaft system 200 is within the required range, that is, the alignment problem of the shaft system assembly is completed.

[0136] The present application solution can be used for the centering assembly of the shaft to the hole through the axial test assembly 120 and the radial test assembly 130, and can measure the angular misalignment angle of the shaft system. The present solution records the rotation angle of the shaft system 200 under test while measuring the radial displacement of the shaft system 200 under test, finds the angular position of the maximum misalignment through the relationship between the radial displacement and the angle, and indicates it through the indicator 180, thereby facilitating the adjustment of the shaft system centering.

[0137] In the description of this specification, the description with reference to the terms "some embodiments", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0138] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent of this application.

Claims

1. A shaft alignment test system, characterized in that: include: A test device, comprising a housing assembly, an axial test assembly, a radial test assembly, a first speed sensor, a second speed sensor, an incremental code tape, a zero position marker and an indicator, wherein the housing assembly is provided with a placement position for placing a shaft system to be measured, the axial test assembly is arranged on the end face of the housing assembly, the axis of the axial test assembly is parallel to the axis of the housing assembly, the radial test assembly is arranged on the housing assembly, the axis of the radial test assembly is perpendicular to the axis of the housing assembly, the first speed sensor and the second speed sensor are arranged in sequence in the axial direction of the housing assembly, the first speed sensor and the second speed sensor are both arranged on a side of the housing assembly away from the axial test assembly, and the first speed sensor is arranged on a side of the second speed sensor close to the housing assembly, the incremental code tape and the zero position marker are arranged on the shaft system to be measured, and the incremental code tape and the zero position marker are arranged at intervals from each other, and the indicator is arranged on a side of the housing assembly away from the axial test assembly; Among them, the axial test component and the radial test component can obtain the misalignment angle value of the measured shaft system, and the first speed sensor, the second speed sensor, the incremental code belt and the zero position marker can obtain the parallel misalignment offset of the measured shaft system and indicate it through the indicator.

2. The shaft alignment test system according to claim 1, characterized in that: The shell assembly includes a first end cover, and the first end cover is disposed on an end surface of one end of the shell assembly; The testing device includes multiple groups of axial testing components, which are arranged at intervals on the end face of the shell component, each group of the axial testing components includes an end face sleeve, an end face ejector and a pressure sensor, the end face sleeve is embedded in the first end cover, and the end faces of the end face sleeves of each group of the axial testing components are located in the same plane, the pressure sensor is arranged between the end face sleeve and the first end cover, and the end face ejector is sleeved in the end face sleeve.

3. The shaft alignment test system according to claim 1 or 2, characterized in that: The testing device comprises at least two groups of radial testing components, and the at least two groups of radial testing components are sequentially spaced apart in the axial direction of the housing component; Each group of the radial test components includes a displacement detection part, which includes a radial sleeve, a radial ejector, an elastic member, a positioning pin and a displacement sensor. The radial sleeve is threadedly connected to the housing assembly, and the radial ejector is embedded in the radial sleeve through the elastic member. The radial ejector can move in the axial direction of the radial sleeve. The positioning pin is inserted in the radial sleeve to fix the radial ejector. The displacement sensor is arranged in the radial sleeve to measure the displacement of the radial ejector.

4. The shaft alignment test system according to claim 3, characterized in that: The shaft alignment test system includes a first radial test assembly and a second radial test assembly. The first radial test assembly and the second radial test assembly each include four displacement detection parts. The four displacement detection parts are arranged in sequence in the circumferential direction of the shell assembly, and the spacing intervals between adjacent displacement detection parts are the same.

5. The shaft alignment test system according to claim 4, characterized in that: The housing assembly comprises a first housing and a second housing, wherein a first end of the first housing is connected to a first end of the second housing, a second end of the first housing is connected to a second end of the second housing, and a placement position is formed between the first housing and the second housing; The shaft alignment test system also includes a universal joint and a magnetic base, and the magnetic base is connected to the second shell through the universal joint.

6. The shaft alignment test system according to claim 5, characterized in that: The axial test components are all arranged on the first housing; The central angle formed between adjacent displacement detection parts is 90°.

7. The shaft alignment test system according to claim 5, characterized in that: The housing assembly further comprises a second end cover, which is arranged on a side of the first housing and the second housing away from the axial test assembly; The first rotation speed sensor, the second rotation speed sensor and the indicator are all arranged on the second end cover.

8. The shaft alignment test system according to claim 7, characterized in that: The first rotation speed sensor is arranged on a side of the second rotation speed sensor close to the second end cover, and the first rotation speed sensor is connected to the second rotation speed sensor by an adhesive member.

9. The shaft alignment test system according to claim 7, characterized in that: The incremental code tape and the zero position marker are both adhered to the measured shaft system through an adhesive, and the incremental code tape and the zero position marker are located on a side of the second end cover away from the axial test assembly.

10. The shaft alignment test system according to claim 1, characterized in that: The shaft alignment test system also includes a data acquisition and display module, which includes a data acquisition unit and a display unit. The data acquisition unit is used to collect data recorded by the axial test assembly, the radial test assembly, the first speed sensor, the second speed sensor, the incremental code tape and the zero position marker, and display the data through the display unit.

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